JP5628720B2 - Packaging machine control structure - Google Patents

Description

  The present invention relates to a packaging machine comprising packaging means for packaging crops such as lettuce, cabbage or broccoli artificially supplied from a supply port to a predetermined position in the machine with a packaging sheet, and control means for controlling the operation of the packaging means. It relates to the control structure.

  As the control structure of the packaging machine as described above, after manually supplying crops from the supply port to a predetermined position in the machine, the left and right selection switches provided on the outside of the machine are pushed simultaneously with both hands while being separated in the left-right direction. Then, there is a configuration in which the control means operates the packaging means on the basis of the outputs from the left and right selection switches at this time so as to wrap the agricultural products with the packaging sheet (see, for example, Patent Document 1).

JP-A-6-40414 (paragraph numbers 0011 to 0020, FIGS. 1 to 4)

  In the control structure of the packaging machine as described above, when manually supplying crops from the supply port to a predetermined position in the machine, the hand inserted into the machine from the supply port is removed from the supply port, and the left and right selection switches are pressed simultaneously with both hands. Unless configured, the packaging means cannot be operated, so that it is possible to reliably prevent the packaging means from operating with the hand inserted into the machine from the supply port. There is room for improvement in terms of workability because it is necessary to push the left and right selection switches simultaneously with both hands each time the is operated.

  An object of the present invention is to improve workability while reliably preventing the packaging means from operating in a state in which a hand or the like for manually supplying agricultural products is inserted into the machine from the supply port.

A first invention is a packaging means for packaging with packaging sheet on the mounting table via落込port mounting table from the supply port of the top plate artificially supplied crop in position of flight by the package sheet, wherein In a control structure of a packaging machine comprising a control means for controlling the operation of the packaging means,
An insertion detecting means for detecting insertion of an object from the supply port into the machine is provided between the top plate and the mounting table,
A crop detection means for detecting the presence or absence of a crop at the predetermined position is disposed below the mounting table,
When the crop detection means detects the crop and the insertion detection means switches from the state of detecting the insertion of the object to the state of not detecting the object, the control means changes the packaging means based on the detection information. It is configured to operate and package the crop with the packaging sheet.

According to the first invention, when the state of the crop detection means detects the crop and the state of the insertion detection means switches from the state of detecting the insertion of the object to the state of not detecting the state, the state at this time is changed from the supply port to the inside of the machine. After an artificial supply of crops to a predetermined location has been performed, it can be determined that the hand inserted into the machine from the supply port for the artificial supply is in a state where the supply of the crop extracted from the supply port is complete. Thereby, the packaging means is operated to wrap the agricultural product with the packaging sheet.
In other words, if a hand inserted into the supply port is extracted from the supply port after artificially supplying crops, the packaging unit is automatically operated without performing a dedicated operation to operate the packaging unit when the extraction operation is completed. Can be activated automatically.

On the other hand, when the crop detection means is not detecting the crop and the state is changed from the state where the insertion detection means detects the insertion of the object to the state where it is not detected, this state is the artificial supply of the crop to a predetermined position in the aircraft Without being performed, it can be determined that the object simply inserted into the machine from the supply port is in a state where the crop is not yet supplied, and the packaging means is not operated.
In other words, before artificially supplying crops from the supply port to a predetermined position in the machine, for example, to remove dust attached to the machine, insert the hand from the supply port and grab the garbage, then supply the hand When an operation such as extraction from the mouth is performed, based on the operation at this time, the control means erroneously determines that the artificial supply of crops to a predetermined position in the machine has been completed and operates the packaging means. Occurrence can be prevented.

Therefore, it is possible to improve the workability of the crop packaging operation while reliably prevented such a risk that the packing means in a state in which pledged hands from the supply port to the machine is operated.

According to a second invention, in the first invention,
The insertion detection unit is configured so that at least one of the light projection width of the projector and the light reception width of the light receiver has the same length as the opening width of the supply port, and the light projector and the light receiver are arranged to face each other. It is configured as a photoelectric type.

According to the second invention, the entire area or substantially the entire area of the supply port can be set as the detection target area of the insertion detection means, and thereby the object can be inserted into the machine from the supply port regardless of the insertion position with respect to the supply port. It can be reliably detected by the insertion detecting means.

  Therefore, it is possible to prevent the occurrence of inconvenience that the packaging unit does not operate properly due to the insertion detection unit not detecting the insertion of the object from the supply port into the machine depending on the insertion position with respect to the supply port.

It is a perspective view of a packaging machine. It is a vertical left side view of a packaging machine. It is a vertical left side view of the upper part of the packaging machine showing a state before the packaging sheet is supplied. It is a vertical left side view of the upper part of the packaging machine showing the supply state of the packaging sheet. It is the vertical left side view of the upper part of a packaging machine which shows the state just before crop supply after packaging sheet supply. It is a vertical section left view of the important section showing the state immediately after crop supply. It is a vertical left view of the principal part which shows the packaging state of agricultural products. It is the vertical left side view of the principal part which shows the sheet | seat surplus part cutting | disconnection discharge | release state after crop packaging. It is the vertical left side view of the principal part which shows the transfer state to the guidance chute | shoot of the agricultural products after packaging. It is the vertical left side view of the principal part which shows the discharge state of the agricultural products after packaging. It is a vertical front view of the principal part which shows the state immediately after crop supply. It is a vertical front view of the principal part which shows the packaging state of agricultural products. It is a longitudinal front view of the principal part which shows the sheet | seat surplus part cutting | disconnection state after crop packaging. It is a vertical front view of the principal part which shows the transfer state to the guidance chute | shoot of the agricultural products after packaging. It is a cross-sectional top view of the principal part which shows the open / close state (packaging operation | movement) of an opening / closing apparatus. It is a cross-sectional top view of the principal part which shows the state of the switchgear and discharge | release means before a packaging start. It is a cross-sectional top view of the principal part which shows the state of the opening / closing apparatus and discharge | release means immediately after sheet surplus part conveyance. It is a cross-sectional plan view of the main part showing the state of the opening / closing device and the discharge means during conveyance of the sheet surplus part. It is a cross-sectional top view of the principal part which shows the state of the opening / closing device and discharge | release means just before sheet | seat surplus part discharge | release. It is a cross-sectional top view of the principal part which shows the state of the opening / closing apparatus and discharge | release means immediately after discharge | release of a sheet | seat excess part. It is a perspective view of the principal part which shows the structure of a cutting device and a position shift prevention means. It is a perspective view of the principal part which shows the structure of a drawer | drawing-out apparatus. It is a vertical left side view of the principal part showing the movement path with respect to the fixed base in the supply movement of the gripping mechanism for supplying the packaging sheet. It is a vertical left side view of the principal part showing the movement path with respect to the fixed base in the return movement of the gripping mechanism for supplying the packaging sheet. It is a top view of the principal part which shows the structure of discharge | release means. It is a perspective view of the principal part which shows the structure of a discharge | release means. It is a side view of the principal part which shows a structure of a pair of clamping nail | claw in a discharge | release means, and each pushing tool. It is a vertical front view of the principal part which shows the structure around a discharge outlet. It is a block diagram which shows a part of control structure. It is a flowchart of packaging start discrimination | determination control. It is a flowchart of packaging sheet supply control. It is a flowchart of crop packaging control. It is a flowchart of sheet surplus part discharge control. It is a flowchart of package crop discharge control. It is a flowchart of abnormal intrusion detection control.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 29, the agricultural product packaging machine exemplified in the present embodiment moves the packaging sheet 1 having a set length forward from the sheet roll R in a state in which the long packaging sheet 1 is wound in a roll shape. The supply means A to be taken out and supplied, the crop a such as lettuce, cabbage or broccoli supplied artificially from the work position in front of the machine body is packaged with the set-length packaging sheet 1 and the surplus portion 1A of the packaging sheet 1 after packaging ( Hereinafter, the packaging means B for cutting the sheet surplus part 1A), the guide means C for guiding the crop a after packaging to the outside of the machine, the discharging means D for releasing the cut sheet surplus part 1A to the outside of the machine, and A control means E for controlling the operation of the packaging machine, etc. is provided on the machine frame F. The packaging sheet 1 employs a permeable resin film made of polypropylene or polystyrene.

  As shown in FIGS. 1 to 5, the supply unit A pulls out a set length of a packaging sheet 1 forward from a sheet roll mounting portion 2 on which the sheet roll R is mounted and a predetermined length from the sheet roll R. And a cutting device 4 for cutting the drawn packaging sheet 1 to a set length, and the like, and the rear portion on the upper side in the sheet drawing direction in the machine body frame F It is deployed on the side.

  As shown in FIGS. 1 to 20, the packaging means B is placed on the mounting table 5 from the mounting table 5 on which the packaging sheet 1 supplied by the drawer device 3 is mounted, and from the circular drop opening 5 </ b> A formed at the central side of the mounting table 5. A receiving base 6 for receiving the crop a supplied with the packaging sheet 1, an elevating device 7 for moving the receiving base 6 up and down, and an opening / closing operation for opening and closing the agricultural product a on the receiving base with the packaging sheet 1 on the receiving base. The apparatus 8 is configured on the front side of the machine body frame F, which is the lower side in the sheet drawing direction.

  As shown in FIGS. 2 to 14, the guide means C is composed of a guide chute 9 that receives the packaged crop a from the cradle 6 and guides it to the outside of the machine, and the left part of the upper and lower intermediate part in the machine frame F. Is deployed.

  As shown in FIG. 8 and FIGS. 16 to 20, the discharge means D includes a transport device 10 that transports the cut sheet surplus portion 1 </ b> A to a discharge position set on the left side of the rear portion of the mounting table 5 in the packaging machine, and its An extrusion device 11 for extruding the sheet surplus portion 1A from the discharge position toward the left side of the machine is arranged on the upper left side of the machine body frame F.

  As shown in FIG. 29, the control means E is provided as a control program in the control device 12 configured by using a microcomputer including a CPU and an EEPROM.

  As shown in FIGS. 1-15, the body frame F is comprised so that various steel materials, such as an angle steel material and a channel steel material, may be assembled | attached to frame shape, and the supply means A, the packaging means B, etc. may be supported. In the machine body frame F, the mounting table 5 and the like are disposed above so as to form a space for supplying a packaging sheet between the front and rear outer plates 13 to 16 forming the front and rear, left and right outer surfaces of the packaging machine. A top plate 17 that covers the four sides, four casters 18 that facilitate the movement of the packaging machine, and the like are attached.

  As shown in FIGS. 1 to 5, the sheet roll placement unit 2 is arranged at the rear upper end of the machine body frame F. The sheet roll placement unit 2 includes front and rear support rollers 19 that are installed over both left and right ends of the sheet roll placement unit 2. The front and rear support rollers 19 are arranged in a state where a set interval is provided in the front-rear direction so as to receive and support the sheet roll R in the left-right orientation whose width direction coincides with the left-right direction of the packaging machine. 2 at the bottom. Further, it is linked to the supply motor 20 via a chain-type supply transmission mechanism 21 so as to rotate in the sheet supply direction by the operation of the electric supply motor 20 arranged at the lower left of the sheet roll mounting portion 2. It is.

  As shown in FIGS. 2 to 5 and FIGS. 22 to 24, the drawer device 3 includes a left and right drawer arm 23 that swings integrally in the front-rear direction with a left-right interlocking shaft 22 provided at the rear lower part of the body frame F as a fulcrum. It has.

  The left and right pull-out arms 23 are moved from a rear standby position set between the sheet roll mounting portion 2 and the mounting table 5 when an electric pull-out motor 24 arranged in the lower left part of the machine body frame F is rotated forward. When the feeding motor 24 swings to the front sheet supply position set at the front end portion of the mounting table 5 and the pulling motor 24 rotates in the reverse direction, the left drawer is moved so as to swing back from the front sheet supply position to the rear standby position. A sector gear 25 mounted on the arm 23 is meshed with a pinion gear 24 </ b> A that is an output gear of the drawing motor 24. The posture is changed from the standing posture to the forward leaning posture by the supply swing from the standby position to the sheet supply position, and the posture is changed from the forward leaning posture to the standing posture by the return swing from the sheet supply position to the standby position. It is.

  At the upper ends of the left and right drawer arms 23, when the packaging sheet 1 having a set length is pulled out from the sheet roll R, the left and right ends protruding from the mounting table 5 at the start end of the sheet roll R are gripped. It is equipped with a gripping mechanism 26 for supplying the packaging sheet.

  The left and right gripping mechanisms 26 are provided with a flat plate-like fixing member 27 at the upper end portion of each drawer arm 23, and are movable up and down with respect to the fixing member 27 below the fixing member 27 at the upper end portion of each drawer arm 23. The member 28 is provided and configured. The left and right fixing members 27 are provided with an elastic body 29 such as rubber on the lower surface of the inner front end that is the gripping action portion. The left and right movable members 28 include a swing arm 31 that swings up and down with a left and right fulcrum pin 30 provided at the upper end of each drawer arm 23 as a fulcrum. A gripping rod 32 protrudes inward, and a tension spring 33 that presses and urges the gripping rod 32 against the elastic body 29 is constructed over the pull-out arm 23 and the swing arm 31. When the electric gripping motor 34 provided on the left drawer arm 23 is rotated forward, the left and right movable members 28 are integrated from the lower grip release position to the upper grip position by the action of the left and right tension springs 33. When the gripping motor 34 is rotated in the reverse direction, the left and right movable members 28 swing integrally from the upper gripping position to the lower gripping release position against the action of the left and right tension springs 33. The movable member 28 is linked to a gripping motor 34 through a gripping interlock mechanism 35.

  That is, the left and right gripping mechanisms 26 are configured to switch from the gripping release state to the gripping state by the forward rotation operation of the gripping motor 34 and to switch from the gripping state to the gripping release state by the reverse rotation operation of the gripping motor 34. is there. The pulling start end portion of the sheet roll R is gripped by the elastic body 29 of the fixed member 27 and the grip rod 32 of the movable member 28 that is displaced below the elastic body 29 over the grip release position and the grip position. With this configuration, it is possible to improve the separation of the sheet when switching from the gripping state to the gripping release state while reliably gripping the drawing start end of the sheet roll R in the gripping state.

  The gripping interlocking mechanism 35 applies rotational power from the gripping motor 34 to a left-right rotation shaft 37 that is installed over the lower ends of the left and right drawer arms 23 by a transmission gear (not shown) built in the transmission case 36. The rotational movement of the rotary shaft 37 is converted into the swing movement of the left and right movable members 28 by the left and right swing arms 38 and the left and right linkage arms 39.

  With the above-described configuration, when the gripping motor 34 is rotated forward in a state where the left and right pulling arms 23 are positioned at the standby position, the pulling device 3 switches the left and right gripping mechanisms 26 from the gripping release state to the gripping state. The pulling start end of the roll R is gripped. Then, when the pulling motor 24 rotates forward after the gripping, the left and right pulling arms 23 swing from the standby position to the sheet supply position, and the supply sheet swings the set length of the packaging sheet 1 from the sheet roll R. The paper is drawn forward along a predetermined drawing path and supplied to the mounting table 5. When the gripping motor 34 is rotated in reverse after the supply, the right and left gripping mechanisms 26 are switched from the gripping state to the gripping release state to release the gripping of the packaging sheet 1 from the drawing start end, and the pulled packaging sheet 1 is placed on the mounting table 5. Placed on. When the pull-out motor 24 rotates reversely after the placement, the left and right pull-out arms 23 return and swing from the sheet supply position to the standby position, leaving the pulled-out packaging sheet 1 on the placement table 5. Then, by this return swing, the left and right drawer arms 23 return to the standby position in a state where the left and right gripping mechanisms 26 are maintained in the grip release state.

  In the state where the left and right drawer arms 23 are positioned at the sheet supply position, the packaging sheet 1 pulled out by the left and right drawer arms 23 is positioned at an appropriate position with respect to the mounting table 5. Incidentally, the state in which the packaging sheet 1 is positioned at an appropriate position with respect to the mounting table 5 means that the central portion of the packaging sheet 1 having a set length (the brand mark printed on the central portion of the packaging sheet 1) is the entrance 5A of the mounting table 5. It is a state located directly above.

  As shown in FIGS. 2 to 5 and FIGS. 21 to 24, the cutting device 4 is fixedly provided with a fixed base 40 between the sheet roll mounting portion 2 and the mounting base 5, and swings with respect to the fixed base 40. The presser 41 and the cutting tool 42 which are displaced are provided.

  The fixing base 40 is formed in a U shape when viewed from the side, and is extended over both left and right ends of the machine body frame F so as to be positioned below the drawing path of the packaging sheet 1. And the horizontally long receiving part 40A which receives the front and back of the cutting location of the packaging sheet 1 from the lower part is provided in each upper end part before and after that. At both left and right ends of the fixed base 40, notch portions 40 </ b> B are formed that allow the left and right grip rods 32 provided in the drawer device 3 to pass through in the grip-released state.

  The presser 41 is made of a sheet metal moving member formed in a U-shape in plan view, and is mounted on the machine frame F so as to swing up and down with a left and right support shaft 43 inserted through both ends thereof. It is. Further, the free end portion is configured to be located above the drawing path of the packaging sheet 1, and the free end portion is pressed against the front and rear of the cutting portion of the packaging sheet 1 received by the front and rear receiving portions 40A. The front and rear pressing members 41A that are pressed against and fixed to the front and rear receiving portions 40A as the tool 41 descends and swings are equipped. The front and rear pressing members 41 </ b> A are configured by attaching a horizontally long cushioning material such as a rubber sponge to the lower surface of a left and right strip-shaped steel plate suspended from the free end of the presser 41. The support shaft 43 of the presser 41 is arranged at the same position as the receiving portion 40 </ b> A of the fixed base 40 at a position on the rear side that is on the upper side in the sheet pulling direction than the fixed base 40.

  The cutting tool 42 is made of a sheet metal moving member formed in a substantially U shape in plan view, and is mounted on the body frame F so as to swing up and down with a left and right support shaft 43 inserted through both ends thereof. It is. Further, the free end portion is configured to be positioned above the drawing path of the packaging sheet 1, and the free end portion is positioned between the front and rear pressing members 41 </ b> A, and the front and rear pressing members 41 </ b> A are arranged. A horizontally long cutting blade 42 </ b> A that cuts a portion between the front and rear fixed portions of the packaging sheet 1 that are pressed and fixed to the front and rear receiving portions 40 </ b> A as a cutting portion is provided. When the electric cutting motor 44 disposed on the lower left side of the sheet roll mounting portion 2 is actuated, the cutting tool 42 swings downward from the upper standby position to the lower limit position and the upper standby position from the lower limit position. The left end is linked to the cutting motor 44 via a push-pull arm 45 and a rotary arm 46 so as to perform a series of upward and downward swings.

  The presser 41 is a cutting tool from the upper standby position to the presser position where the front and rear pressing members 41A acting on the packaging sheet 1 are pressed against the front and rear receiving portions 40A. 42 is mounted on the cutting tool 42 so as to swing up and down integrally. And in the state mounted in the cutting tool 42, the height position of the pressing action surface with respect to the blade edge of the cutting tool 42 is set so that the pressing action surface is located below the cutting edge of the cutting tool 42, and the presser As the left and right tension springs 47 for placing and urging the tool 41 on the cutting tool 42 are installed over the pressing tool 41 and the cutting tool 42, the packaging sheet 1 increases as the amount of downward swing from the pressing position of the cutting tool 42 increases. The pressing force for pressing the front and rear receiving portions 40A is increased, and the packaging sheet 1 can be more reliably fixed by the front and rear receiving portions 40A and the front and rear pressing members 41A.

  With the above-described configuration, when the cutting motor 44 is operated, the cutting device 4 starts the downward swing of the cutting tool 42 and the presser 41 that are waiting at the standby position. When the tool 41 reaches the presser position, the front and rear pressing members 41A of the presser 41 press the front and rear receiving portions 40A before and after the cut portion of the packaging sheet 1 received by the front and rear receiving portions 40A of the fixing base 40. Attach and fix. After reaching the presser position, the presser 41 is received by the fixed base 40, so that only the cutting tool 42 swings downward, and the cutting tool 42 is set below the presser position by this downward swing. By passing through the cutting position for cutting the packaging sheet, which is the working position of the tool 42 with respect to the packaging sheet 1, toward the lower limit position, the front and rear of the packaging sheet 1 fixed by the front and rear receiving portions 40 </ b> A and the front and rear pressing members 41 </ b> A. The cutting part located between the fixed parts is cut by the cutting blade 42A of the cutting tool 42. Further, in the downward swing at this time, the presser 41 that presses the packaging sheet 1 against the front and rear receiving portions 40A increases as the downward swing amount from the pressing position of the cutting tool 42 increases due to the action of the left and right tension springs 47. Since the pressing force is increased and the front and rear positions of the cut portion in the packaging sheet 1 are firmly fixed, it becomes easy to cut the cut portion of the packaging sheet 1 with the cutting blade 42A. Thereafter, the cutting tool 42 reaches the lower limit position and starts to swing upward. With this upward swing, the pressing force of the presser 41 that presses the packaging sheet 1 against the front and rear receiving portions 40A becomes weaker. When the cutting tool 42 reaches the presser position by the upward swing, the presser 41 at the press position moves upward and swings to the standby position together with the cutting tool 42 and stands by at the standby position.

  Although not shown in the drawings, in order to make the presser 41 and the cutting tool 42 swing up and down smoothly by the operation of the cutting motor 44, the cutting tool 42 is formed in a U-shape in plan view and cut. The left and right ends of the tool 42 may be configured to be linked to the cutting motor 44. As the linkage structure, for example, a rotating shaft driven by a cutting motor 44 is formed in a long length extending over both left and right end portions of the body frame F, and the cutting tool 42 swings up and down by the rotation of the rotating shaft. It is conceivable that both end portions of the rotating shaft are linked to both end portions of the cutting tool 42 via left and right rotating arms and push-pull arms.

  As shown in FIGS. 1 to 21, in the packaging means B, the mounting table 5 is lower in the front side portion, which is the lower side portion in the sheet drawing direction, which is the working position side, than the rear side portion, which is the upper side portion in the sheet drawing direction. It is arranged at the front upper end portion of the body frame F in a forward and downward inclined posture. Further, the front side mounting portion 5C extending forward from the central side mounting portion 5B in which the drop opening 5A is formed is tilted forward and downward with a tighter gradient than the central side mounting portion 5B, and the rear side from the central side mounting portion 5B. The rear mounting portion 5D extending to the rear is bent so as to be inclined downward.

  A rubber packaging auxiliary member 48 having a plurality of tongue pieces 48 </ b> A extending toward the center of the drop-in opening 5 </ b> A in an elastically deformable state is disposed at the center side portion of the mounting table 5. The packaging auxiliary member 48 acts on the packaging sheet 1 in which each tongue piece 48 </ b> A is dropped together with the crop a from the drop opening 5 </ b> A, thereby pressing the packaging sheet 1 against the surface of the crop a so that the peripheral side of the packaging sheet 1 is The agricultural product a is guided and placed together with the packaging sheet 1 on the receiving platform 6 while being pushed toward the convergence region set above the packaging target agricultural product a. Accordingly, the crop a can be put together with the packaging sheet 1 in a good state without dropping or pushing the crop a into the entrance 5A by simply dropping the crop a carried near to the entrance 5A into the entrance 5A. Can be received and supported at a predetermined position.

  The top plate 17 is formed such that a front half portion 17A located above the mounting table 5 is inclined forward and downward along the mounting table 5, and the drop of the mounting table 5 is placed at the center of the front half 17A. A supply port 17 </ b> B that enables supply of the crop a from the drop-in port 5 </ b> A of the mounting table 5 to the receiving table 6 is formed facing the port 5 </ b> A. The supply port 17B is formed in a composite shape composed of a substantially rectangular front half (lower half) and a semicircular rear half (upper half) and is formed to be larger than the drop opening 5A of the mounting table 5.

  That is, the mounting table 5 provided with the drop opening 5A and the front half 17A of the top plate 17 provided with the supply port 17B are tilted forward and downward to tilt the mounting table 5 from the supply port 17B of the top plate 17 from the work position in front of the machine body. It is possible to facilitate the artificial supply of the crop a to the receiving tray 6 via the drop entrance 5A. Further, by forming the supply port 17B of the top plate 17 in the composite shape as described above, it is possible to further facilitate the artificial supply of the crop a from the supply port 17B, and to supply at the time of this artificial supply. It is possible to facilitate the extraction from the hand supply port 17B inserted into the port 17B to the front side.

  As shown in FIGS. 2 to 14, the cradle 6 includes a sheet metal material or the like that is formed in a dish shape with a cross shape in plan view, and a cushion material such as a rubber sponge is attached to the surface of the sheet metal material. is there. Further, the support shaft 49 of the front downward inclination posture is used as a fulcrum for the placement posture that tilts forward and downward along the mounting table 5 and the feed posture that swings leftward from this placement posture and tilts downward to the left. The support base 50 is equipped so that the posture can be switched. A tension spring 51 is installed over the cradle 6 and the support pedestal 50 to urge the cradle 6 back to the mounting posture.

  The elevating device 7 includes an elevating moving body 52 that moves up and down in a vertical direction with respect to the mounting table 5 in a forward and downward inclined posture along the mounting table 5 below the mounting table 5. The cradle 6 is placed so as to be movable together. A boss 52A that is slidably fitted to a guide rod 53 made of a round bar steel material fixedly arranged on the rear side of the machine body frame F in a vertical posture with respect to the mounting table 5 is welded to the rear end portion of the elevating moving body 52. It is. At the front end portion of the lifting and lowering moving body 52, a roller 55 is mounted so as to be able to roll on a guide rail 54 made of a channel material fixedly arranged on the front side of the body frame F in a vertical posture with respect to the mounting table 5. . When the electric lifting / lowering motor 56 arranged at the left / right intermediate rear part of the body frame F is rotated forward, the lifting / lowering moving body 52 moves downward from the receiving position to the transfer position along the guide rod 53 and the guide rail 54. When the elevating motor 56 is operated in reverse, the chain-type elevating mechanism is connected to the elevating motor 56 at its rear end so as to move upward from the transfer position to the receiving position along the guide rod 53 and the guide rail 54. 57 is linked.

  The receiving position is set on the upper front side of the body frame F, which is directly below the drop opening 5A, in order to enable the receiving stage 6 to receive the crop a before being supplied from the drop opening 5A. The transfer position is a machine body frame that is in the vicinity of the discharge start end of the guide chute 9 located below the receiving position in order to enable transfer of the crop a after packaging to the guide chute 9. It is set at the center side of F.

  In other words, the lifting device 7 is vertically moved with respect to the mounting table 5 by the lifting / lowering movement of the lifting / lowering moving body 52 by the operation of the lifting / lowering motor 56, along with the lifting / lowering moving body 52. The body frame F is mounted in a forward tilting posture along the vertical direction with respect to the mounting table 5 so as to move up and down in the direction.

  And when the lifting device 7 is equipped in a forward tilting posture in this way, the lower side of the lifting device 7 is located on the rear side away from the front working position, and using this, in this packaging machine, The front side outer plate 13 provided on the position side is closer to the lower side of the lower side 13A of the lifting device 7 and farther from the working position than the upper side 13B facing the mounting table 5, the opening / closing device 8 and the like. It is bent so as to be positioned. Thereby, the recessed part 13a dented backward can be formed in the lower part of the front side which is a working position side of a packaging machine, and this recessed part 13a is utilized for footrest space when an operator sits on a chair etc. (See FIGS. 1 and 2).

  In addition, the recessed part 13a formed in the lower side of the front side of the packaging machine is formed to have a vertical length that allows entry of a lower part from the knee of an operator sitting on a chair or the like. The height of the drop opening 5A of the mounting table 5 and the supply opening 17B of the top board 17 are such that an operator sitting on a chair or the like can easily supply the crop a to the drop opening 5A and the supply opening 17B. For example, the height is set lower than the shoulder of the worker sitting on a chair or the like. In addition, the bottom of the packaging machine is equipped with an artificially operated or electric jack, and the vertical length of the recess 13a is set according to the height of the chair or the length of the operator sitting on the chair from the knee to the bottom. You may comprise so that adjustment is possible.

  As shown in FIGS. 1 and 2, in this packaging machine, a discharge port 14A is formed in a rear outer plate 14 arranged on the opposite side of the working position, which enables the output of the crop a after packaging to the outside of the machine. It is. Further, in this packaging machine, the lower part of the rear side, which is below the sheet roll mounting part 2 and the supply motor 20, is provided by arranging the sheet roll mounting part 2 and the supply motor 20 on the upper part thereafter. A space is formed. Then, by utilizing this space, the lower side 14B of the rear side outer plate 14 approaches the lower side of the elevating device 7, and the upper side 14C facing the sheet roll placement unit 2, the supply motor 20, and the like. It is bent so as to be located on the front side. Thereby, the recessed part 14a dented forward can be formed in the lower part side of the back side of a packaging machine, and this recessed part 14a can be used as a foot setting space when an operator replaces the sheet roll R or an outer side on the rear side. It can be used as a case placement space for a case for accommodating the packaged crop a discharged from the discharge port 14A formed on the lower side 14B of the plate 14.

  As shown in FIGS. 2 to 20, the opening / closing device 8 includes left and right sliding bodies 58 that slide between the mounting table 5 and the receiving table 6 in the left-right direction in a downwardly inclined posture along the mounting table 5. Yes.

  At the rear end portion of each sliding body 58, a boss portion that is slidably fitted on a guide rod 59 made of a round bar steel material extending in the left-right direction across the left and right end portions of the body frame F on the rear upper portion of the body frame F. 58A is welded. A roller that engages with a rear edge of a guide rail 60 made of a strip steel material, which is erected in the left-right direction over the left and right ends of the body frame F on the front end upper portion of the body frame F, at the front end of each sliding body 58 61 is equipped. And each sliding body 58 was set to the center side of the body frame F from the standby position set to the left and right both ends of the body frame F when the electric packaging motor 62 provided in the left rear part of the body frame F is operated. Linked packaging interlocking with the packaging motor 62 so that the closing operation sliding in the closing direction to the sealing cutting position and the opening operation sliding in the opening direction from the sealing cutting position to the standby position are performed in series. They are linked via a mechanism 63.

  The packaging interlocking mechanism 63 converts the rotational movement from the packaging motor 62 into the sliding movement of the right sliding body 58 by the rotary arm 64 and the push-pull rod 65, and reverses the sliding movement of the right sliding body 58. The balance arm 66 and the push-pull rod 67 are used to convert the sliding motion of the left sliding body 58 (the sliding motion in the direction opposite to the sliding motion of the right sliding body 58).

  On the left and right sliding bodies 58, a shutter member 69 is mounted in the same forward and downward inclined posture as the sliding bodies 58 via front and rear spacers 68 fixed to the respective sliding bodies 58. The left and right sliding bodies 58 and the left and right shutter members 69 are interchangeable means (not shown) that allow relative sliding in the left-right direction within the set range between the corresponding sliding bodies 58 and the shutter members 69. When the left and right sliding bodies 58 slide in the closing direction by installing the front and rear tension springs 70 in the left-right direction across the corresponding sliding body 58 and the shutter member 69, When the left and right shutter members 69 slide in the closing direction via the spring 70, and the left and right sliding members 58 slide in the opening direction, the left and right shutter members 69 correspond to the accommodation limit of the accommodation means. The sliding body 58 and the sliding body 58 are configured to slide in the opening direction.

  Although illustration is omitted, the configuration of the accommodation means includes, for example, left and right rollers on the upper portion of the spacer 68, and left and right shutter members 69 with left and right elongated holes into which the left and right rollers are engaged. It is conceivable that the sliding member 58 and the shutter member 69 are formed to have a length that allows relative sliding in the left-right direction within a set range.

  As shown in FIGS. 2 to 20, the left and right shutter members 69 are arranged such that the left shutter member 69 is positioned above the right shutter member 69, and the lower and right shutter members 69 are opened and closed during sliding. The shutter member 69 is arranged side by side so as to be in sliding contact with the upper surface of the shutter member 69. When the left and right shutter members 69 are slid in the opening direction, the left and right shutter members 69 are opened above the cradle 6 so that the cradle 6 faces the drop opening 5A, and When the left and right shutter members 69 are slid in the closing direction, a recess 69A is formed which acts on the peripheral side of the packaging sheet 1. Each recess 69 </ b> A is formed in a substantially arc shape that gathers the peripheral side of the packaging sheet 1 to the sealing region set above the upper end of the packaging target crop a as the left and right shutter members 69 are closed.

  In the left and right shutter members 69, a band plate-like pressing member 71 that slides integrally with the corresponding shutter member 69 is disposed at a position below the set interval. When the left and right shutter members 69 reach the closed position, the left and right pressing members 71 press and press the peripheral sides of the packaging sheet 1 near the upper end of the crop a to be packaged, and the left and right shutters are pressed by this pressure contact. It is configured to secure a gap 72 between the left and right shutter members 69 by holding the peripheral side of the packaging sheet 1 gathered in the sealing area in the sealing area by preventing the movement of the member 69 in the closing direction. It is.

  Below the left and right pressing members 71, there are provided front and rear pushing arms 74 that open and close in the front-rear direction along the left and right pressing members 71 with a front and rear support shaft 73 provided at the right end of the body frame F as a fulcrum. It is. The front and rear pushing arms 74 are formed with cam holes 74A into which the rollers 75 provided in the right sliding body 58 are engaged. Each cam hole 74A pushes the front and rear pushing arms 74 from the standby positions set at the front and rear end sides of the machine frame F to the pushing positions set at the center side of the machine frame F in accordance with the closing operation of the right sliding body 58. The shape is such that the corresponding roller 75 is moved and guided so that the front and rear pushing arms 74 swing back and swing from the pushing position to the standby position as the right sliding body 58 opens. It is formed.

  That is, the front and rear pushing arms 74 gather the peripheral side of the packaging sheet 1 from the front and rear direction to the sealing region in conjunction with the closing operation of the left and right sliding bodies 58, and the left and right sliding bodies 58 are opened. In conjunction with the operation, the top of the cradle 6 is opened so that the cradle 6 faces the drop opening 5A.

  Sealing heaters 76 are arranged at the front and rear intermediate portions of the left and right sliding bodies 58 so that they face each other. A cutting blade 77 for cutting the sheet surplus portion 1A after packaging is provided on the upper portion of the left heater 76. The left and right heaters 76 approach the sealing region as the left and right sliding members 58 slide to the sealing cutting position (sliding in the closing direction) after the left and right shutter members 69 reach the closed position. The collected wrapping sheet 1 is configured so as to be heat-welded by press contact with the peripheral side. The cutting blade 77 gathers in the sealing area as the left and right sliding members 58 slide to the sealing cutting position (sliding in the closing direction) after the left and right shutter members 69 reach the closing position. The sheet portion above the heat-sealed portion on the peripheral side of the package sheet 1 is cut as the sheet surplus portion 1A.

  With the configuration described above, when the packaging motor 62 is operated, the opening / closing device 8 slides in the closing direction together with the left and right shutter members 69 waiting in the open position. The front and rear pushing arms 74 that are waiting in the standby position in synchronization with the sliding start pushing and swinging, and by these operations, the peripheral side of the packaging sheet 1 is gathered to the sealing region. The agricultural product a is packaged with the packaging sheet 1. Then, the left and right shutter members 69 reach the closed position, and the left and right sliding bodies 58 slide in the closing direction. At the same time, the sheet surplus portion 1A is cut with a cutting blade 77. Further, as the cutting of the sheet surplus portion 1A is completed, the left and right sliding bodies 58 start sliding in the opening direction, and the front and rear pushing arms 74 are returned and swung in conjunction with the sliding. The left and right shutter members 69 start to slide in the opening direction as the left and right sliding bodies 58 reach the closed position. With these movements, the left and right sliding bodies 58 move to the standby position. The left and right shutter members 69 reach the open position, the front and rear pushing arms 74 reach the standby position, open the top of the cradle 6 and make the cradle 6 face the drop opening 5A. The supply of the crop a from the drop entrance 5 </ b> A to the cradle 6 is enabled.

  As shown in FIGS. 2 to 14, the support 50 for placing and supporting the cradle 6 is provided with the packaging sheet 1 that wraps the crop a supplied to the cradle 6 with the lower side of the crop a by the supply. A holding mechanism 78 that holds the pedestal 6 is mounted.

  The holding mechanism 78 includes front and rear holding arms 80 that swing back and forth with front and rear support shafts 79 mounted on the support base 50 in the left-right direction. The front and rear holding arms 80 have a cushioning material such as a rubber sponge attached to the upper end of the holding action. Further, it is oscillated and biased in the holding direction by a torsion spring 81 fitted on the front and rear support shafts 79. When the electric holding motor 82 provided in the support base 50 rotates in the forward direction, the front and rear holding arms 80 swing in the holding direction by the action of the torsion spring 81, and when the holding motor 82 operates in the reverse direction, The lower arms of the front and rear holding arms 80 are linked to the holding motor 82 via a bending / extending link mechanism 83 so that the holding arm 80 swings in the holding release direction against the action of the torsion spring 81. is there. The link mechanism 83 is formed with a long hole 83 </ b> A that allows the front and rear holding arms 80 to swing in the holding direction by the action of the torsion spring 81.

  With the above configuration, the holding mechanism 78 allows the front and rear holding arms 80 to swing in the holding direction by the action of the torsion spring 81 when the holding motor 82 rotates forward, and the torsion spring 81 acts. As a result, the front and rear holding arms 80 swing in the holding direction, and the crop a supplied to the cradle 6 is placed on the cradle 6 together with the packaging sheet 1 that wraps the lower side of the crop a regardless of its size. Hold in the state. When the holding motor 82 is operated in reverse, the link mechanism 83 bends and the front and rear holding arms 80 swing in the holding release direction against the action of the torsion spring 81. The holding of the crop a by the arm 80 is released.

  As shown in FIGS. 2 to 14, the guide chute 9 guides the packaged crop a received from the cradle 6 to a discharge port 14 </ b> A formed in the rear outer plate 14 and discharges it from the discharge port 14 </ b> A to the outside of the machine. It is comprised so that it may do.

  The outlet 14A is an upper and lower middle side that is a relatively high position on the rear outer plate 14 so that a large amount of the unpacked crop a discharged from the outlet 14A can be accumulated around the outlet 14A. Is formed.

  The guide chute 9 is connected to the rear outer plate 14 via a left and right support shaft 84 provided at the discharge end portion near the lower edge of the discharge port 14A, and the discharge start end portion of the guide chute 9 is connected to the lifting device 7. By being mounted on a support member 85 that extends from the up-and-down moving body 52, it is configured to swing up and down about a left and right support shaft 84 in conjunction with the up-and-down movement of the up-and-down moving body 52. . Then, when the lifting / lowering moving body 52 rises to the receiving position, it is switched to a discharge posture inclined upward at a predetermined angle, and when the lifting / lowering moving body 52 is lowered to the transfer position, it is set to switch to the horizontal receiving posture. It is.

  Further, when the lifting / lowering moving body 52 descends to the transfer position, the body frame F contacts the cradle 6 from below so that the cradle 6 is placed against the urging force of the tension spring 51. It is equipped with a contact member 86 that switches from the receiving position 6 to the guide chute 9 by switching to the feeding position from the receiving position 6.

  With the above configuration, when the lifting / lowering moving body 52 of the lifting / lowering device 7 is lowered toward the transfer position, the guide chute 9 switches from the discharging posture to the receiving posture in conjunction with the lowering, and the lifting / lowering movement at this time The cradle 6 is switched from the placing posture to the sending posture in conjunction with the lowering of the body 52, so that the crop a after packaging is received from the cradle 6. Thereafter, when the lifting / lowering moving body 52 of the lifting / lowering device 7 rises toward the receiving position, the receiving posture is switched to the discharging posture in conjunction with the rising, and the packaged crop a received from the receiving tray 6 is transferred to the discharging port 14A. It is guided and discharged out of the machine through the discharge port 14A.

  As shown in FIGS. 8, 16 to 20, and FIGS. 25 to 27, the transport device 10 has a support shaft 88 as a fulcrum on a bracket 87 arranged in a front-down slanting posture along the mounting table 5 at the upper left part of the body frame F. A transfer arm 89 that swings along the upper surface of the left shutter member 69 is provided as a moving body, and a clamping mechanism 90 is provided at the free end of the transfer arm 89.

  When the electric transfer motor 91 provided in the upper left part of the machine body frame F rotates in the forward direction, the transfer arm 89 moves from the standby position in front of the drop opening 5 </ b> A of the mounting table 5 to the drop opening 5 </ b> A of the mounting table 5. When the conveyance motor 91 swings to the rear discharge position and the conveyance motor 91 rotates in reverse, the conveyance motor 91 is connected to the chain-type conveyance transmission mechanism so as to swing back from the rear discharge position to the front standby position. 92 are linked together.

  The holding mechanism 90 includes a fixed claw 93 and a movable claw 94 that are arranged in a posture parallel to the left and right shutter members 69 at the free end portion of the transfer arm 89 as a pair of holding claws, so that the transfer arm 89 swings. Accordingly, the fixed claw 93 and the movable claw 94 are configured to move along the upper surfaces of the left and right shutter members 69. When the transfer arm 89 is positioned at the standby position, the transfer arm 89 is positioned at the standby position set on the center side of the packaging machine in front of the drop opening 5A of the mounting table 5, and the transfer arm 89 is positioned at the discharge position. Is located at the discharge position set at the left end of the packaging machine behind the drop opening 5A of the mounting table 5, and when the transport arm 89 swings between the standby position and the discharge position, It is configured to pass through a sealing region that is a surplus portion cutting position.

  That is, the clamping mechanism 90 moves from the standby position to the discharge position by passing the surplus portion cutting position (sealing region) by the transport swing of the transport arm 89, and moves from the discharge position by the return swing of the transport arm 89. It passes through the part cutting position and is configured to return to the standby position.

  The fixing claw 93 is fixed to the lower end portion of the hanging portion 89 </ b> A formed at the free end portion of the transport arm 89 so as to be positioned at a height position spaced apart from the upper surfaces of the left and right shutter members 69. The movable claw 94 has a stepped support shaft 95 that is positioned at the same height as the fixed claw 93 and is relatively rotatable at a position closer to the base end side than the fixed claw 93 in the free end portion of the transport arm 89. As a fulcrum, it is configured to swing open and close along the upper surface of the left shutter member 69 over a clamping position contacting the fixing claw 93 and a clamping release position greatly separated from the fixing claw 93.

  The transport device 10 includes a cam-type pinch claw operating mechanism 96 that opens and closes the pinch mechanism 90 by swinging the movable claw 94 in conjunction with the swing of the transport arm 89 (movement of the pinch mechanism 90). It is. The clamping claw operating mechanism 96 includes a swing arm 98 that swings in a direction along the upper surface of the shutter member 69 with a support shaft 97 provided on the base end side of the transport arm 89 as a fulcrum, and a movable claw on the swing arm 98. A link arm 99 for connecting the link 94 to be interlocked is provided as a link member. Then, the cam follower 100 is provided at the free end of the swing arm 98, and the cam follower 100 is contacted and urged against the cam portion 87A formed on the bracket 87 by the tension spring 101 installed over the transfer arm 89 and the linkage arm 99. In addition, the movable claw 94 is configured to swing and urge in the clamping direction.

  The cam portion 87A includes a clamping release region 87a that guides the cam follower 100 so that the movable claw 94 is positioned at the clamping release position against the action of the tension spring 101 regardless of the swing of the conveyance arm 89, and the conveyance arm 89. The movable claw 94 swings and displaces from the clamping release position to the clamping position by the action of the tension spring 101 along with the conveyance swing, and the movable claw 94 acts on the action of the tension spring 101 along with the return swing of the conveyance arm 89. On the other hand, the first operation area 87b for guiding the cam follower 100 so as to swing and displace from the clamping position to the clamping release position, and the movable claw 94 is positioned at the clamping position by the action of the tension spring 101 regardless of the swing of the transfer arm 89. The movable claw 94 is pulled along with the holding region 87c for separating the cam follower 100 from the cam portion 87A and the transfer swing of the transfer arm 89. The movable claw 94 swings from the clamping position to the gentle clamping position against the action of the screw 101, and the movable claw 94 swings from the gentle clamping position to the clamping position by the action of the tension spring 101 as the transfer arm 89 returns and swings. A second operation area 87d that guides the cam follower 100 so as to be dynamically displaced is formed so as to be continuous in that order from the front side to the rear side of the packaging machine.

  The clamping release position is a position where the distance of the movable claw 94 from the fixed claw 93 is maximized, and the clamping position is the position where the distance of the movable claw 94 from the fixed claw 93 is minimized and the tension spring 101 acts. Is the position where the clamping force between the fixed claw 93 and the movable claw 94 obtained in the above is not limited by the action of the cam portion 87A on the cam follower 100, and the loose clamping position is from the fixed claw 93. The separation distance of the movable claw 94 is slightly larger than the clamping position, and the clamping force between the fixed claw 93 and the movable claw 94 obtained by the action of the tension spring 101 is caused by the action of the cam portion 87A on the cam follower 100. The position is limited to a force that is looser than the pinching force at the pinching position, specifically, a loose force that allows the extruding device 11 to push out the excess sheet portion 1A.

  A first receiving portion 87B for receiving the cam follower 100 at the standby position is formed at the front end portion of the bracket 87 so as to be continuous with the cam portion 87A, and a second receiving portion for receiving the cam follower 100 at the release position is provided at the rear end portion of the bracket 87. The receiving portion 87C is formed to be continuous with the cam portion 87A.

  With the above configuration, the transport device 10 performs a transport process in which the transport arm 89 transports and swings when the transport motor 91 rotates in the forward direction, and the transport arm 89 returns and swings when the transport motor 91 rotates in the reverse direction. Perform a return process.

  In the transfer process, while the cam follower 100 moves in the pinching release region 87a by the transfer swing of the transfer arm 89, the movable claw 94 is positioned at the pinch release position, so that the holding mechanism 90 has the maximum opening. The sheet surplus portion 1A after cutting moves toward the surplus portion cutting position where the nipping release state is maintained. While the cam follower 100 moves in the first operation area 87b by the conveyance swing of the transfer arm 89, the movable claw 94 swings and displaces from the clamping release position to the clamping position, so that the clamping mechanism 90 is movable with the fixed claw 93. The sheet surplus portion 1A after cutting remains while switching from the state in which the sheet surplus portion 1A is easily released between the claw 94 to the holding state in which the sheet surplus portion 1A is pinched with the maximum clamping force. Pass the surplus part cutting position. Thereby, the cut sheet surplus portion 1A remaining at the surplus portion cutting position can be securely clamped by the clamping mechanism 90. While the cam follower 100 moves in the clamping region 87c by the conveyance swing of the conveyance arm 89, the movable claw 94 is positioned at the clamping position, so that the clamping mechanism 90 clamps the sheet surplus portion 1A with the maximum clamping force. It moves toward the discharge position while maintaining the state. Accordingly, the cut sheet surplus portion 1A can be reliably conveyed toward the discharge position without dropping from the clamping mechanism 90. While the cam follower 100 moves in the second operation area 87d due to the conveyance swing of the transfer arm 89, the movable claw 94 swings and displaces from the clamping position to the gentle clamping position, so that the clamping mechanism 90 is pushed out from the clamping state. 11, the sheet surplus portion 1A is pushed into the release position while switching to a loosely nipping state in which the sheet surplus portion 1A is nipped by a loose nipping force that allows the sheet surplus portion 1A to be pushed out. This prevents the sheet surplus portion 1A from falling off or unnecessarily spreading immediately before release, which may occur when the sandwiching mechanism 90 is configured to move to the release position while switching to the release state. However, the cut sheet surplus part 1A can be conveyed to the discharge position.

  Further, in the return process, while the cam follower 100 moves in the second operation area 87d by the return swing of the transport arm 89, the holding mechanism 90 moves toward the standby position while switching from the slowly held state to the held state. . While the cam follower 100 moves in the clamping area 87c by the return swing of the transfer arm 89, the clamping mechanism 90 moves toward the standby position while maintaining the clamping state. While the cam follower 100 moves in the first operation area 87b by the return swing of the transport arm 89, the clamping mechanism 90 moves toward the standby position while switching from the clamping state to the clamping release state. While the cam follower 100 moves in the nip release area 87a by the return swing of the transfer arm 89, the nip mechanism 90 moves to the standby position while maintaining the nip release state.

  The extrusion device 11 swings integrally with the transport arm 89 with the support shaft 88 of the transport arm 89 as a fulcrum, and the support shaft 102 provided at a position closer to the clamping mechanism than the support shaft 88 in the transport arm 89 is used as a fulcrum. Thus, a balance-like push-out arm 103 that swings independently along the swinging direction of the transport arm 89 over the discharge start end position on the upper side in the surplus portion transport direction and the discharge end position on the lower side in the surplus portion transport direction is provided. At the end of the arm portion of the push-out arm 103 that extends from the support shaft 102 of the push-out arm 103 toward the pinch mechanism 90, the pinch mechanism 90 in the direction (vertical direction) perpendicular to the opening / closing direction and the moving direction of the pinch mechanism 90. The first pushing tool 104 and the second pushing tool 105 arranged in the vicinity of the fixed claw 93 and the movable claw 94 so as to sandwich the fixed claw 93 and the movable claw 94 of the first and second pushing tools 104 and 105 are pushed across the discharge start end position and the discharge end position. Equipped to swing together.

  The push arm 103 is a cam follower 106 that can be received by a receiving portion 87D integrally formed as a receiving tool at the rear end portion of the bracket 87 at the end portion of the arm portion extending from the support shaft 102 toward the bracket 87. It has. Further, a return spring is urged to return to the discharge start end position by a tension spring 107 installed over the transport arm 89 and the pushing arm 103. The cam follower 106 is received by the receiving portion 87D of the bracket 87 while the transfer arm 89 swings in the discharge area which is the movement end area in the transfer process (the movement start end area in the return process). In conjunction with the swing movement of 89, the discharge swing from the discharge start position to the discharge end position against the action of the tension spring 107, and in conjunction with the return swing of the transport arm 89, the discharge start position from the discharge end position. It is configured to swing back to the position by the action of the tension spring 107.

  That is, in this extrusion device 11, the receiving arm 87D, the cam follower 106, and the tension spring 107 are operated to release the extrusion arm 103 and the respective extrusion tools 104, 105 in conjunction with the conveyance swing in the discharge area of the conveyance arm 89. In addition, a mechanical discharge operation mechanism 108 for returning the push-out arm 103 and the push-out tools 104 and 105 in conjunction with return swinging in the discharge region of the transport arm 89 is configured.

  The first pusher 104 is configured to be positioned above the fixed claw 93 and the movable claw 94 by the horizontal plate portion 109A of the crank-shaped bent plate 109 fixed to the free end portion of the push arm 103, and its posture. Is set to an inclined posture closer to the fixed claw 93 and the movable claw 94 toward the lower side in the release movement direction. Then, it is formed wide so as to have a function of guiding the lower end of the moving direction close to the fixed claw 93 and the movable claw 94, that is, the upper surface of the movable claw 94 on which the discharge action end 104A opens and swings. It is.

  The second pusher 105 is a sheet metal fixed to the lower end portion of the bent plate 109 so as to be positioned between the left and right shutter members 69 and the fixed claws 93 and the movable claws 94 in a posture parallel to the left and right shutter members 69. It is composed of materials. Then, the side end on the lower side in the discharge movement direction, which is located immediately below the first pusher 104, that is, the discharge action end 105A is provided so that the upper surface has a function of guiding the lower surface of the movable claw 94 whose opening and closing swings. It is formed in a substantially triangular shape that is substantially the same width as one pusher 104 and narrows toward the upper side in the discharge movement direction. Further, the discharge action end 105A is disposed on the upper side of the first pusher 104 in the discharge movement direction so that the discharge action end 105A is located on the upper side of the discharge action end 104A of the first pusher 104, Further, the side end portion 105B on the upper side in the discharge movement direction is bent so as to have an inclined posture away from the upper surface of the shutter member 69 toward the upper side in the discharge movement direction.

  At the discharge start end position, each of the pushers 104 and 105 comes into contact with the hanging portion 89A of the transfer arm 89, and the discharge action ends 104A and 104A of the first pusher 104 and the second pusher 105 are respectively. 105A is configured to be located on the proximal end side of the fixed claw 93 and the movable claw 94. At the discharge end position, the entire first pusher 104 and the discharge action end side of the second pusher 105 are located away from the fixed claw 93 and the movable claw 94 in the discharge movement direction, and the second pusher 105 The upper portion 105 </ b> C in the discharge movement direction is configured to be positioned below the distal ends of the fixed claw 93 and the movable claw 94.

  With the above-described configuration, when the push-out arm 103 reaches the discharge area by swinging integrally with the transfer arm 89 in the transfer process and the cam follower 106 is received by the receiving portion 87D of the bracket 87, the push-out device 11 releases the discharge area. The push arm 103 oscillates from the discharge start end position to the discharge end position against the action of the tension spring 107 in conjunction with the transfer swing of the transfer arm 89 at this time, and each of the pushers 104 and 105 is released by this release swing. However, it moves from the discharge start end position to the discharge end position at a speed faster than the moving speed of the pinching mechanism 90 to overtake the pinching mechanism 90. As a result, the cut sheet surplus portion 1A conveyed from the surplus portion cutting position to the discharge region by the transport device 10 can be pushed out from the discharge position of the discharge region to the outside by the extrusion device 11.

  At the time of this release operation, the clamping mechanism 90 of the conveying device 10 switches from the clamping state to the gently clamping state, and the first and second portions of the pushing device 11 with respect to the upper and lower portions near the clamping portion of the clamping mechanism 90 in the sheet surplus portion 1A. Since the first pusher 104 and the second pusher 105 are pushed out, the excess sheet portion 1A held by the holding mechanism 90 can be stably pushed out in the discharge direction and discharged smoothly and reliably from the discharge position to the outside of the apparatus. it can.

  In addition, since the state of the clamping mechanism 90 at the time of the release operation is not the clamping release state but the loose clamping state, the sheet surplus portion at the time of the release operation is compared with the case where the state of the clamping mechanism 90 is the clamping release state. It is possible to maintain the state of 1A in a lump state in which unnecessary spread is prevented, whereby the discharge direction of the sheet surplus portion 1A can be stabilized and can be prevented from being caught in other portions. The discharge from the discharge position of the sheet surplus portion 1A to the outside of the apparatus can be smoothly and reliably performed in a stable state in a predetermined discharge direction.

  Further, the discharge action end 105A of the second pusher 105 located on the lower side of the holding mechanism 90 is located on the upper side of the discharge action direction 104A of the first pusher 104 located on the upper side of the hold mechanism 90. Thus, at the time of the discharge operation, the first pusher 104 acts on the sheet surplus portion 1A before the second pusher 105, whereby the sheet surplus portion 1A falls to the first pusher 104 side. This can be prevented. Even if the sheet surplus portion 1A falls to the first pusher 104 during the discharge operation, the first pusher 104 is closer to the fixed claw 93 and the movable claw 94 toward the lower side in the discharge movement direction. With the inclined posture, the sheet surplus portion 1A can be guided in the discharge direction by the upper surface of the first pusher 104. As a result, the excess sheet portion 1A can be discharged from the discharge position to the outside of the machine more smoothly and reliably, and the excess sheet portion 1A is discharged when the first pusher 104 and the second pusher 105 return. It is possible to prevent inconvenience from being brought back to the starting position.

  In addition, the lower side of the first pusher 104 is fixed at the time of return movement because the first pusher 104 is inclined toward the fixed claw 93 and the movable claw 94 toward the lower side in the release movement direction. It has a function of guiding the claw 93 and the movable claw 94 between the first pusher 104 and the second pusher 105, and this causes a case where the push arm 103 or the like is rattled due to long-term use. Even in the return movement, the fixed claw 93 and the movable claw 94 can be smoothly and reliably moved between the first pusher 104 and the second pusher 105. As a result, the pushers 104 and 105 are arranged close to the fixed claw 93 and the movable claw 94 with higher accuracy, and are closer to the clamping position of the clamping mechanism 90 and the movable claw 94 in the sheet surplus portion 1A. It can be made to act on the upper and lower parts, and the extrusion discharge of the sheet surplus portion 1A by the pushers 104 and 105 can be performed more smoothly and reliably.

  On the other hand, when the transport arm 89 finishes the transport swing and starts the return swing in the discharge region, the push arm 103 is interlocked with the return swing from the discharge end position to the discharge start end position by the action of the tension spring 107. With the return swing, the pushers 104 and 105 return from the discharge end position to the discharge start end position at a speed faster than the moving speed of the clamping mechanism 90.

  At this time, when the pushers 104 and 105 start returning, the upper side portion 105C in the direction of the release movement of the second pusher 105 is positioned below the distal ends of the fixed claws 93 and the movable claws 94. Since the upper and lower ends of the fixed claw 93 and the movable claw 94 overlap vertically in the moving direction, even if the movable claw 94 and the pushing arm 103 are rattled due to long-term use. In addition, it is possible to prevent the respective leading end portions of the fixed claw 93 and the movable claw 94 from lowering than the upper surface of the second pusher 105, and thereby, from the discharge end position of each pusher 104, 105 to the discharge start end position. The return movement can be performed smoothly and reliably.

  Further, when the transfer arm 89 finishes the return swing in the discharge area and starts returning to the standby position, the transfer arm 89 and the pusher that have been detached from above the left and right shutter members 69 in the swing in the discharge area are pushed. The arm 103 and the like return to above the left and right shutter members 69. At this time, the second pusher 105 that is closest to the upper surface of the left and right shutter members 69 is the side end portion 105B on the upper side in the discharge movement direction. Is bent so that the upper side of the release movement direction (lower side of the return movement direction) is inclined away from the upper surface of the shutter member 69, the rattling arm 103 and the like may be rattled due to long-term use. Thus, even when the lower surface of the second pusher 105 is lower than the upper surface of the shutter member 69, the second pusher 105 rides on the lower surface of the side end portion 105B on the upper side in the discharge movement direction. An inner action, it is possible to smoothly and reliably return and transfer arm 89 and the extrusion arm 103 above the right and left of the shutter member 69.

  As shown in FIGS. 1 and 28, a discharge port used for discharging the sheet surplus portion 1A by the extruding device 11 to the outside of the rear side of the left outer plate 15 adjacent to the rear end portion of the mounting table 5 is provided at the upper portion. 15A is formed. In addition, the discharge port 15A is covered from the lateral outer side, the sheet surplus portion 1A discharged from the discharge port 15A is guided downward, and discharged from the waste port 110 formed between the left outer plate 15 and discarded outside the apparatus. A cover 111 and a flow guide plate 112 for guiding the excess sheet portion 1A discharged from the extrusion device 11 to the discharge port 15A are provided.

  With the above configuration, the discharge port 15A and the discard port 110 can be formed at a high position in the upper part on the rear side of the left outer plate 15, so that the sheet surplus portion after disposal is disposed at the discard location below the discard port 110. 1A can be stored in a bulky manner, and the number of interruptions of the operation for collecting the discarded sheet surplus portion 1A can be reduced. Further, by providing the discharge cover 111, it is possible to prevent exposure of the fixed claw 93 and the movable claw 94 that move toward the discharge port 15A, the pushers 104 and 105, and the like, and the diffusion of the sheet surplus portion 1A. Can be prevented. Furthermore, by providing the flow-down guide plate 112, it is possible to prevent the sheet surplus portion 1A discharged by the extrusion device 11 from falling into the machine.

  As shown in FIG. 1, an inspection window 111 </ b> A having a transparent resin window plate 113 is formed at the front upper portion of the discharge cover 111, and thereby the sheet surplus portion 1 </ b> A is clogged inside the discharge cover 111. It is possible to easily check whether or not the occurrence has occurred from the work position.

  As shown in FIGS. 2 to 5 and FIG. 21, the supply means A includes a rear side portion that is the upper side portion in the sheet drawing direction of the set length of the packaging sheet 1 supplied to the mounting table 5 on the center side of the mounting table 5. A sheet holding unit 114 is provided that prevents displacement of the packaging sheet 1 from an appropriate position with respect to the mounting table 5 due to the inclination of the mounting table 5 by being pressed against the mounting unit 5B. The sheet holding means 114 includes a pair of left and right support shafts 115 provided on the free end portion of the presser 41 that is located behind the placing table 5 and above the drawing path of the packaging sheet 1. Is supported by a pair of left and right plate-like presser members 116 that are connected so as to return to their forward-lowering inclined posture extending from the support shaft 115 to the mounting table 5 by their own weight.

  The left and right presser members 116 are spaced at a predetermined interval in the left-right direction so that their free end portions 116A act on the left and right end portions that deviate left and right from the drop-in opening 5A in the center-side mounting portion 5B of the mounting table 5. It is arranged. Then, when the presser 41 is positioned at the upper standby position, the free end portions 116 </ b> A extend from the respective support shafts 115 so as to act on the rear end portion of the center side placement portion 5 </ b> B in the placement table 5. As a result, when the presser 41 swings downward from the standby position to the presser position, the free end 116A is displaced by the downward swing and the gradient is reduced. When the presser 41 slides forward from the rear end portion of the center-side mounting portion 5B along the center-side mounting portion 5B and, conversely, when the presser 41 rises and swings from the presser position to the standby position, the lifter swings backward. As the gradient increases, the free end portions 116A slide toward the rear end portion of the center side placement portion 5B along the center side placement portion 5B from the front movement end position. It is configured. The free end portion 116A of each pressing member 116 is formed to be bent away from the mounting table 5 toward the extended end side.

  With the above configuration, when the pulling device 3 of the supplying unit A starts pulling out the packaging sheet 1 from the sheet roll R, the sheet holding unit 114 is configured so that the left and right pressing members 116 are connected to the packaging sheet 1 pulled out by the pulling device 3. After climbing on the contact and swinging to get on the packaging sheet 1, the packaging sheet 1 is allowed to be pulled out by the pulling device 3 while pressing the packaging sheet 1 against the mounting table 5 with their own weight, Thereby, the floating from the mounting base 5 of the packaging sheet 1 at the time of sheet | seat supply can be suppressed.

  Further, since the presser 41 of the cutting device 4 is also used as a support member of the sheet holding means 114, the presser 41 swings downward from the standby position to the presser position after the pulling device 3 starts to pull out the packaging sheet 1. As a result, the free end portion 116A of each pressing member 116 slides forward while pressing the packaging sheet 1 against the mounting table 5, thereby pushing the rear side of the packaging sheet 1 forward. It is possible to remove the slack of the packaging sheet 1 on the cutting device side, and to prevent the occurrence of defective cutting due to the slack of the packaging sheet 1 on the cutting device side.

  When the presser 41 starts rising and swinging from the presser position to the standby position after cutting the packaging sheet 1, the free end portion 116 </ b> A of each presser member 116 presses the packaging sheet 1 against the mounting table 5 accordingly. By sliding backward, the rear side of the packaging sheet 1 can be pulled backward, and the slack of the packaging sheet 1 on the mounting table 5 can be removed.

  Thereafter, even when the presser 41 returns to the standby position, the free end portion 116A of each presser member 116 maintains the pressing of the packaging sheet 1 on the mounting table 5 due to its own weight. Accordingly, it is possible to prevent the displacement from the proper position due to the inertia at the time of sheet supply of the packaging sheet 1 placed at the proper position of the placement table 5, the inclination of the placement table 5, and the like.

  In addition to the sheet holding means 114, as described above, the mounting table 5 is bent and formed so that the rear mounting portion 5D is inclined downwardly, so that the packaging sheet placed at an appropriate position of the mounting table 5 is provided. Accordingly, it is possible to more effectively prevent the position shift from the proper position to the front due to the inertia at the time of supplying one sheet or the inclination of the mounting table 5.

  As shown in FIG. 29, the control device 12 outputs an output of a changeover switch 117 that enables switching between an operating state and a stopped state of the packaging machine, and a sheet supply switch that instructs supply of the packaging sheet 1 to the mounting table 5. 118, the output of the sheet detecting means 119 for detecting the presence or absence of the packaging sheet 1 on the mounting table 5, the hand from the supply port 17B of the top plate 17 which is the supply port of the packaging machine to the inside of the packaging machine, crop a, etc. The output of the insertion detecting means 120 for detecting the insertion of the object, the output of the crop detecting means 121 for detecting the presence or absence of the crop a at a predetermined position (the position where the crop a is placed on the receiving base 6 at the receiving position), the left and right drawers An output of arm position detecting means 122 for detecting arrival of the arm 23 at the standby position and the sheet supply position, an output of cutting tool position detecting means 123 for detecting the arrival of the cutting tool 42 at the standby position, Output of lifting / lowering detecting means 124 that detects arrival of the descending moving body 52 to the receiving position and transfer position, output of shutter position detecting means 125 that detects arrival of the left and right shutter members 69 to the closed position, and conveyance The output of the discharge completion detection means 126 for detecting the arrival of the arm 89 to the discharge position, the output of the return completion detection means 127 for detecting the arrival of the transport arm 89 to the standby position, and the like are input.

  As shown in FIG. 1, the changeover switch 117 is provided at the left front end of the top plate 17 so that the right hand from the working position in front of the packaging machine can be easily operated. The change-over switch 117 employs a two-position switching type dial-type rotary switch that can be switched and held between a stop position and an operation position. The rotary switch includes a compression spring (not shown) and a helical spring (not shown) inside, and in a state of being located at the stop position, a pushing operation against the action of the compression spring and the action of the helical spring are provided. The operation can be switched from the stop position to the operation position by a combined operation with the rotation operation against the operation, and can be held at the operation position by the action of the compression spring at this operation position. By releasing the holding at the operating position due to the action of the compression spring by the pushing operation against the action of the compression spring, it is possible to switch from the operating position to the stop position by the action of the helical spring, and the compression spring at this stop position It is comprised so that it can hold | maintain in a stop position by the effect | action of.

  With this configuration, it is possible to easily determine the operation position of the changeover switch 117, while preventing an erroneous operation from the stop position of the changeover switch 117 to the operation position, and the changeover switch 117 that may be performed during the packaging operation. Switching from the operation position to the stop position can be performed simply by pushing the changeover switch 117 and releasing the holding of the changeover switch 117 at the operation position by the action of the compression spring.

  As shown in FIG. 1, the sheet supply switch 118 is disposed at the right front end of the top plate 17 so that the left hand from the working position in front of the packaging machine can be easily operated. The sheet supply switch 118 employs a momentary switch that outputs a sheet supply command for instructing the supply of the packaging sheet 1 to the mounting table 5 every time a pressing operation is performed.

  As shown in FIGS. 2 to 5, the sheet detection means 119 is disposed between the cutting device 4 and the mounting table 5 at the right end of the machine body frame F. The sheet detection means 119 employs a retroreflective photoelectric sensor that detects a photoelectric tube mark printed on the right end of the sheet roll R for each set length.

  As shown in FIGS. 1 to 5, the insertion detection means 120 includes a top plate 17 at a position close to the top plate 17 between the mounting table 5 and the front half 17 </ b> A of the top plate 17 on the right side of the body frame F. A projector 120A disposed in a front-rear direction in an inclined posture along the opening surface of the supply port 17B at a position lateral to the supply port 17B, the mounting table 5 on the left side of the body frame F, and the front half 17A of the top plate 17 A light receiving device 120B arranged in a front and back direction in an inclined posture along the opening surface of the supply port 17B at a position lateral to the supply port 17B of the top plate 17 at a position close to the top plate 17 between A type photoelectric sensor is adopted. The projector 120A is configured by arranging and arranging a large number of light emitting elements 120a at regular intervals in the front-rear direction so that the light projection width in the front-rear direction is the same as the opening width in the front-rear direction of the supply port 17B. is there. The light receiver 120B has a large number of light receiving elements (not shown) arranged at regular intervals in the front-rear direction so that the light-receiving width in the front-rear direction is the same as the opening width in the front-rear direction of the supply port 17B. Configured. Each light emitting element 120a and each light receiving element are opposed to each other so that light from each light emitting element 120a passes directly below the supply port 17B and reaches the corresponding light receiving element. That is, the insertion detection unit 120 is configured such that the entire region directly below the supply port 17B is the detection target region. And the insertion detection means 120 detects that no object is inserted into the machine from the supply port 17B of the top plate 17 when all the light receiving elements receive light, and if any of the light receiving elements does not receive light, It is configured to detect that an object is inserted into the machine from the supply port 17B of the top plate 17.

As shown in FIGS. 1 to 7, the crop detection means 121 includes a lateral side of the sealing region at a position near the shutter member 69 between the mounting table 5 and the right shutter member 69 on the right side of the machine frame F. At a position close to the shutter member 69 between the projector 121A disposed in the front-rear direction in the inclined posture along the right shutter member 69 and the mounting table 5 and the left shutter member 69 at the left end of the machine frame F. A transmissive photoelectric sensor is adopted which is composed of a light receiver 121B arranged in the front-rear direction in an inclined posture along the left shutter member 69 at a position lateral to the wearing area. The projector 121A and the light receiver 121B are opposed to each other so that the light from the projector 121A passes above the left and right shutter members 69 and reaches the light receiver 121B. The crop detection means 121 is configured to detect that the crop a is not present at a predetermined position when the light receiver 121B receives light, and to detect that the crop a is present at the predetermined position when the light receiver 121B does not receive light. It is. In addition, when the crop a moves down together with the lift moving body 52 and the cradle 6 by the operation of the lifting device 7 in a state where it is detected that the crop a is present at a predetermined position, the crop a is detected. By switching to a state where it is not detected, it is configured to detect that the lifting and lowering moving body 52 has been lowered to the packaging position suitable for the size of the crop a.

  Although not shown, the arm position detecting means 122 employs a rotary potentiometer that detects the arrival of the left and right drawer arms 23 to the standby position and the sheet supply position from the swing angle of the left and right drawer arms 23. It is. As described above, the state in which the left and right pull-out arms 23 are positioned at the sheet supply position is a state in which the packaging sheet 1 is positioned at an appropriate position with respect to the mounting table 5. By detecting the arrival of the arm 23 to the sheet supply position, the supply of the packaging sheet 1 to the appropriate position with respect to the mounting table 5 is detected.

  The cutting tool position detecting means 123 employs a limit switch that detects that the cutting tool 42 has reached the standby position by being pressed by the cutting tool 42 that has reached the standby position.

  The raising / lowering detecting means 124 is pressed by the raising / lowering moving body 52 that has reached the receiving position to detect the arrival of the raising / lowering moving body 52 to the receiving position, and the raising / lowering moving body that has reached the transfer position. The second limit switch is configured to detect the movement of the ascending / descending moving body 52 to the transfer position by being pressed at 52.

  The shutter position detection means 125 includes a first proximity switch that detects the arrival of the left and right shutter members 69 to the open position when the sheet metal rotation arm 64 rotates by the operation of the packaging motor 62, and the approach of the rotation arm 64. And a second proximity switch for detecting the arrival of the left and right shutter members 69 to the closed position. The closing operation of the left and right shutter members 69 is an operation for gathering the peripheral side of the packaging sheet 1 to the sealing region and wrapping the crop a with the packaging sheet 1, and the opening operation of the left and right shutter members 69 is The shutter position detecting means 125 has a function as a packaging operation detecting means for detecting the packaging operation of the packaging means B because it is an operation for returning the left and right shutter members 69 to the open position which is the initial position. become.

  The release completion detection means 126 is provided at the rear end portion of the bracket 87, and the return completion detection means 127 is provided at the front end portion of the bracket 87. The release completion detecting means 126 employs a limit switch that detects the arrival of the transport arm 89 to the discharge position by being pressed by the cam follower 100 that has reached the discharge position. The return completion detecting means 127 employs a limit switch that detects the arrival of the transport arm 89 to the standby position by being pressed by the cam follower 100 that has reached the standby position.

  The configuration and arrangement of the switches 117 and 118 and the detection means 119 to 127 can be variously changed. For example, an alternate switch or the like may be adopted as the changeover switch 117, and sheet detection may be performed. A transmission type photoelectric sensor or the like may be adopted as the means 119. Further, a proximity switch is adopted as the cutting tool position detection means 123, the elevation detection means 124, etc., and the shutter position detection means 125 is moved to the shutter that has reached the open position. You may comprise by the 1st limit switch pressed with the member 69, and the 2nd limit switch pressed with the shutter member 69 which reached the closed position.

  As shown in FIGS. 29 to 35, the control means E is configured to control the operation of the packaging machine based on the outputs of the switches 117 and 118 and the detection means 119 to 127 described above.

  Hereinafter, the control operation of the control means E and the operation of the packaging machine will be described.

  When the operator switches the changeover switch 117 from the stop position to the operation position, the control means E performs packaging start determination control based on an operation start command output by the changeover switch 117 in accordance with this changeover operation.

  As shown in FIG. 30, in the packaging start determination control, first, it is determined whether or not the packaging sheet 1 is placed on the placement table 5 based on the output of the sheet detection means 119 [step # 1]. When the packaging sheet 1 is not placed on the mounting table 5, it is determined whether or not a sheet supply command is output from the sheet supply switch 118 [step # 2], and when the sheet supply command is output, the packaging sheet Supply control is performed [step # 3], and then the process returns to step # 1. When the sheet supply command is not output, it is determined whether or not the changeover switch 117 is in the operating position [Step # 4]. If it is in the operating position, the process returns to Step # 1. Exit.

  When the packaging sheet 1 is placed on the placing table 5 in step # 1, it is determined whether or not an object is inserted into the machine from the supply port 17B of the top plate 17 based on the output of the insertion detecting means 120. [Step # 5]. When an object is inserted, the insertion detecting unit 120 determines whether or not the crop a is present at a predetermined position (the position where the crop a is placed on the receiving base 6 at the receiving position) based on the output of the crop detecting unit 121. Is determined whether or not an object has been inserted into the machine from the supply port 17B of the top board 17 (steps # 6 to # 8), and the object is not inserted with the crop a in the predetermined position. In this case, it is determined that the artificial supply of the crop a to the packaging machine has been completed, and the crop packaging control and the abnormal intrusion detection control are performed in parallel [Steps # 9, # 10].

  If the object is not inserted in step # 5, the process proceeds to step # 4, where the changeover switch 117 is switched from the operating position to the stop position, or the insertion detecting means 120 detects the insertion of the object. [Steps # 4, # 1, # 5].

  If an object is inserted in steps # 7 and # 8, it is determined that the artificial supply of the crop a to the packaging machine has not been completed, and the process returns to step # 6. If no object is inserted in step # 8, it is determined that the crop a has not been artificially supplied to the packaging machine, the process proceeds to step # 4, and the changeover switch 117 is switched from the operating position to the stop position. Or wait until the insertion detection means 120 detects the insertion of the object [steps # 4, # 1, # 5].

  As the packaging start discrimination control, the output of the insertion detection means 120 and the crop detection means as described above, regardless of whether or not the packaging sheet 1 is placed on the placing table 5, instead of the above control configuration. If it is determined that the artificial supply of the crop a to the packaging machine is completed based on the output of 121, the crop packaging control and the abnormal intrusion detection control may be performed in parallel.

  Further, when the packaging sheet 1 is placed on the placing table 5, it is determined whether or not an object is inserted into the apparatus from the supply port 17 </ b> B of the top plate 17 based on the output of the insertion detecting means 120. When the insertion detection unit 120 is inserted, it is determined whether or not the insertion detection unit 120 has switched from the state of detecting the insertion of the object to the state of not detecting based on the output of the insertion detection unit 120, and the state has been switched to the state of not detecting. In this case, regardless of the output of the crop detection means 121, it may be determined that the artificial supply of the crop a to the packaging machine is completed and the crop packaging control and the abnormal intrusion detection control are performed in parallel. Furthermore, regardless of whether or not the packaging sheet 1 is placed on the placing table 5, it is determined that the artificial supply of the crop a to the packaging machine has been completed based on the output of the insertion detecting means 120 as described above. If farming It may be configured to perform in parallel and objects packaging control and abnormality intrusion detection control.

  In the packaging start determination control, instead of the output of the sheet detection means 119, the packaging sheet 1 is placed on the placement table 5 from the detection of the movement of the left and right drawer arms 23 based on the output of the arm position detection means 122. You may comprise so that it may be discriminate | determined.

  As shown in FIG. 31, in the packaging sheet supply control, first, the gripping motor 34 is rotated forward to grip the left and right gripping mechanisms 26 positioned at the standby position, and grip the left and right ends of the drawer start end portion of the sheet roll R. The gripping state is switched to [Step # 1].

  When gripping of the packaging sheet 1 by the left and right gripping mechanisms 26 is completed, the supply motor 20 is operated and the drawer motor 24 is rotated forward so that the packaging sheet 1 is moved by the front and rear support rollers 19 and the left and right drawer arms 23. The sheet supply operation for supplying to the mounting table 5 is started [step # 2]. At this time, the operations of the supply motor 20 and the drawer motor 24 are controlled so that the supply speed of the packaging sheet 1 by the front and rear support rollers 19 and the drawing speed of the packaging sheet 1 by the left and right drawer arms 23 are the same.

  Thereafter, based on the output of the sheet detecting means 119, it is determined whether or not the drawing length of the packaging sheet 1 from the sheet roll R has reached the set length [Step # 3]. Then, the cutting motor 44 is operated to start the sheet cutting operation for cutting the packaging sheet 1 with the cutting tool 42 and the holding tool 41 [Step # 4]. Then, based on the output of the cutting tool position detecting means 123, it is determined whether or not the cutting tool 42 and the holding tool 41 have returned to the standby position by the operation of the cutting motor 44 [Step # 5], and returned to the standby position. In this case, the cutting motor 44 is stopped accordingly, the sheet cutting operation is terminated, and the cutting tool 42 and the pressing tool 41 are put on standby at the standby position [step # 6].

  Further, based on the output of the arm position detecting means 122, it is determined whether or not the packaging sheet 1 has been supplied to an appropriate position with respect to the mounting table 5 [Step # 7]. Then, the drawer motor 24 is stopped to end the sheet feeding operation [Step # 8], and the gripping motor 34 is reversely operated to switch the left and right gripping mechanisms 26 to the grip release state, thereby loading the packaging sheet 1. It is mounted at an appropriate position with respect to the mounting table 5 [Step # 9].

  After the placement, until the arm position detecting means 122 detects the arrival of the left and right drawer arms 23 to the standby position, the drawer motor 24 is reversely operated to perform the return operation for returning the left and right drawer arms 23 to the standby position. [Steps # 10 to # 12], the packaging sheet supply control is terminated with the return of the left and right drawer arms 23 to the standby position.

  As shown in FIG. 32, in the crop packaging control, first, the holding motor 82 is rotated forward so that the crop a and the packaging sheet 1 artificially supplied to the receiving base 6 are supplied onto the receiving base by the front and rear holding arms 80. Hold in posture [Step # 1].

  When the holding on the cradle is completed, the elevating motor 56 is rotated forward to lower the crop a and the packaging sheet 1 together with the elevating moving body 52 and the cradle 6 [Step # 2]. At this time, the guide chute 9 in the discharge posture starts to swing downward in conjunction with the lowering of the lifting and lowering moving body 52, and each tongue piece 48A of the packaging auxiliary member 48 as the crop a and the packaging sheet 1 descend. However, the elastic deformation pushes the peripheral side of the packaging sheet 1 against the upper region of the crop a while pushing the peripheral side of the packaging sheet 1 to the convergence region above the crop a.

  When the raising / lowering moving body 52 etc. starts to descend, whether the raising / lowering moving body 52 etc. descends to a packaging position suitable for the size of the crop a based on the presence / absence of the crop a at the predetermined position output by the crop detection means 121 [Step # 3], and when it is lowered to the packaging position, the raising / lowering motor 56 is temporarily stopped to stop the raising / lowering movement body 52, etc., so that the raising / lowering movement body 52 is maintained at the packaging position. [Step # 4]. Further, the packaging motor 62 is operated to slide the left and right sliding bodies 58 to start the packaging operation by the left and right shutter members 69 and the front and rear pushing arms 74 [step # 5]. In this packaging operation, the left and right shutter members 69 interlocked with the left and right sliding bodies 58 slide in the closing direction, and the front and rear pushing arms 74 interlocked with the right sliding body 58 press and swing in the closing direction. When the peripheral side of the packaging sheet 1 is gathered together in the sealing region above the upper end of the crop a and the left and right shutter members 69 reach the closed position, the left and right sliding bodies are operated together with the operation of the packaging motor 62 by the interchange of each interchangeable means. 58 further slides toward the sealing cutting position in the closing direction, and each heater 76 provided on the left and right sliding bodies 58 presses the peripheral side of the packaging sheet 1 gathered to the sealing region and heat-seals. At the same time, the cutting blade 77 provided on the left sliding body 58 cuts the excess sheet portion 1A. Thereby, the packaging of the crop a is completed. After the packaging is completed, the left and right shutter members 69 slide in the opening direction together with the left and right sliding bodies 58 by the operation of the packaging motor 62, and the front and rear pushing arms 74 are opened in the opening direction in conjunction with the right sliding body 58. Swing back to.

  During the packaging operation by the operation of the packaging motor 62, it is determined whether or not the left and right shutter members 69 have reached the closed position based on the output of the shutter position detecting means 125 [Step # 6], and have reached the closed position. In this case, the sheet surplus portion discharge control is performed in parallel [Step # 7]. Further, based on the output of the shutter position detecting means 125, it is determined whether or not the left and right shutter members 69 have moved from the closed position [Step # 8]. Perform [Step # 9]. Further, based on the output of the shutter position detecting means 125, it is determined whether or not the left and right shutter members 69 have reached the open position [Step # 10]. When the open position has been reached, the packaging motor 62 is stopped. The packaging operation is terminated, the left and right sliding bodies 58 are set to the standby position, the left and right shutter members 69 are set to the open position, and the front and rear pushing arms 74 are set to the standby position to end the crop packaging control [Step # 11].

  In the crop packaging control, instead of the above configuration, when the left and right shutter members 69 reach the closed position, the sheet surplus portion release control and the packaging crop discharge control may be performed in parallel. Alternatively, when the left and right shutter members 69 are moved from the closed position, the sheet surplus portion discharge control and the packaged crop discharge control may be performed in parallel.

  As shown in FIG. 33, in the sheet surplus portion discharge control, first, as the shutter position detection unit 125 detects the arrival of the left and right shutter members 69 to the closed position, the conveyance motor 91 is rotated forward. Then, the transfer process of the transfer device 10 is started [Step # 1]. In this transport process, the transport arm 89 of the transport device 10 is transported from the standby position to the discharge position together with the push-out arm 103 of the push-out device 11 by the forward rotation of the transport motor 91, and in conjunction with the transport arm 89. The clamping mechanism 90 switches from the clamping release state to the clamping state, passes through the excess portion cutting position (sealing region), clamps the excess sheet cutting position 1A, and then changes from the clamping state to the gently clamping state. By moving to the discharge position while switching, the cut sheet surplus part 1A is conveyed from the surplus part cutting position to the discharge position. When the transport arm 89 and the push arm 103 reach the discharge region, the push arm 103 that swings integrally with the transport arm 89 moves from the discharge start position to the discharge end position together with the first push tool 104 and the second push tool 105. By swinging the discharge, the excess sheet portion 1A conveyed to the discharge position is discharged out of the apparatus from the left discharge port 15A.

  Next, based on the output of the discharge completion detection means 126, it is determined whether or not the transfer arm 89 has reached the discharge position, and whether or not the changeover switch 117 is in the operating position [steps # 2 and # 3]. . When the transfer arm 89 reaches the discharge position, if the changeover switch 117 is in the operating position, the above-described packaging sheet supply control is performed in parallel [Step # 4], and if the changeover switch 117 is in the stop position, the packaging is performed. The process proceeds to the next step # 5 without performing the sheet supply control. As a result, when the packaging operation is finished, the changeover switch 117 is set to the operating position after the last crop a is supplied from the supply port 17B of the top board 17 until the transport arm 89 reaches the discharge position. The automatic supply of the packaging sheet 1 can be stopped by switching from the stop position to the stop position.

  On the other hand, regardless of the operation position of the changeover switch 117, when the transfer arm 89 reaches the release position, the transfer motor 91 is reversely operated to end the transfer process of the transfer device 10 and start the return process. [Steps # 5 and # 6]. In this return step, the transfer arm 89 is reversely swung from the release position to the standby position together with the push-out arm 103 by the reverse operation of the transfer motor 91, and the holding mechanism 90 is moved from the loosely held state in conjunction with the transfer arm 89. It returns to the standby position while switching to the pinching release state through the pinching state.

  Then, after the return process is started, it is determined whether or not the transfer arm 89 has returned to the standby position based on the output of the return completion detection means 127 [Step # 7]. To stop the return process [Step # 8], and the sheet surplus portion discharge control is ended.

  In addition, it may replace with said structure and you may comprise so that the switch for exclusive use which instruct | indicates the stop of the automatic supply of the packaging sheet 1 may be provided. Further, in the sheet surplus portion discharge control, it is determined whether or not a command to stop the automatic supply of the packaging sheet 1 is output when the left and right shutter members 69 reach the closed position, and this stop command is output. If not, the packaging sheet supply control is performed in parallel with the arrival of the left and right shutter members 69 to the closed position. If a stop command is output, the left and right shutter members 69 reach the closed position. Also, the packaging sheet supply control may not be performed. Further, in the sheet surplus portion discharge control, a command to stop the automatic supply of the packaging sheet 1 is output when the insertion of an object from the supply port 17B of the top plate 17 is detected based on the output of the insertion detection means 120. If the stop command is not output, the packaging sheet supply control is performed at an appropriate predetermined timing after the crop supply (for example, the timing when the transport arm 89 reaches the discharge position), and the stop is performed. When the command is output, the packaging sheet supply control may not be performed.

  As shown in FIG. 34, in the packaged crop discharge control, first, as the shutter position detecting means 125 detects the movement of the left and right shutter members 69 from the closed position, the holding motor 82 is reversely operated to move back and forth. The holding arm 80 releases the crop a and the packaging sheet 1 on the cradle [Step # 1] and resumes the forward and reverse operation of the lift motor 56 to move the lift 52 and the cradle 6 together. The packaged crop a is lowered to the transfer position [Step # 2]. At this time, in conjunction with this lowering, the guide chute 9 swings downward to switch from the discharging posture to the receiving posture, and the receiving base 6 contacts the contact member 86 to change from the mounting posture to the sending posture. By switching, the packaged crop a is transferred from the receiving platform 6 to the discharge start end of the guide chute 9.

  Next, based on the output of the lifting / lowering detection means 124, it is determined whether or not the lifting / lowering moving body 52 has reached the transfer position [Step # 3]. By actuating, the elevating moving body 52 and the cradle 6 are finished to descend and start to rise to the receiving position [steps # 4 and # 5]. At this time, in conjunction with this rise, the guide chute 9 swings up and down and switches from the receiving posture to the discharging posture, thereby guiding the unwrapped crop a transferred to the discharging start end to the discharging port 14A. And discharged from the discharge port 14A to the outside of the machine. In addition, when the cradle 6 releases the contact with the contact member 86, the action of the tension spring 51 switches the delivery posture to the placement posture.

  After that, it is determined whether or not the lifting / lowering moving body 52 has reached the receiving position based on the output of the lifting / lowering detecting means 124 [Step # 6]. The raising of the moving body 52 and the cradle 6 is finished [Step # 7], and the elevating moving body 52 and the cradle 6 are made to stand by at the receiving position, and the packaging crop discharge control is finished.

  As shown in FIG. 35, in the abnormal intrusion detection control, it is determined whether or not the left and right shutter members 69 are in the open position based on the output of the shutter position detection means 125 [Step # 1], and the arm position detection means 122 is determined. It is determined whether or not the packaging sheet 1 has been supplied to an appropriate position with respect to the mounting table 5 based on the output of [No. 2], and whether or not the lifting / lowering moving body 52 is at the receiving position based on the output of the lifting / lowering detecting means 124 [Step # 3]. Then, when the left and right shutter members 69 are in the open position, the packaging sheet 1 is supplied to the appropriate position, and the elevating moving body 52 is in the receiving position, the abnormal intrusion detection control is terminated. On the other hand, when the left and right shutter members 69 are not in the open position, or when the packaging sheet 1 is not supplied to the proper position, or when the lifting and lowering moving body 52 is not in the receiving position, the output of the insertion detecting means 120 is output. Based on this, it is determined whether or not an object has been inserted into the machine from the supply port 17B of the top plate 17 [step # 4], and if no object has been inserted, the process returns to step # 1. When an object is inserted, all the motors 20, 24, 34, 44, 56, 62, 82, 91 are stopped to forcibly stop all the operations relating to the packaging and the alarm 128 (see FIG. 29) is activated. Switch to the emergency stop state [Step # 5]. Thereafter, it is determined whether or not the release switch 129 (see FIG. 29) provided in the packaging machine has been operated [Step # 6], and when the operation is performed, the left and right shutter members 69 and the like are opened. At the same time, the alarm device 128 is stopped to return from the emergency stop state to the initial state, and the abnormal intrusion detection control is terminated [step # 7].

  Thus, when the next crop a or the like is accidentally inserted into the machine from the supply port 17B of the top plate 17 during the packaging operation until the left and right shutter members 69 return to the open position, the packaging of the packaging machine is performed. The operation can be urgently stopped, and the occurrence of a failure due to the supply of the crop a to the machine during the packaging operation can be prevented. In addition, the packaging sheet 1 is not supplied to an appropriate position with respect to the mounting table 5 or the crop a is generated due to the crop a being supplied to the machine in a state where the elevating moving body 52 is not returned to the receiving position. Can be prevented.

  As the abnormal intrusion detection control, instead of the above-described control configuration, it is determined whether or not the left and right shutter members 69 are in the open position, and whether or not the packaging sheet 1 is supplied to an appropriate position with respect to the mounting table 5. When the left and right shutter members 69 are in the open position and the packaging sheet 1 is supplied to the proper position, the abnormal intrusion detection control is terminated, and the left and right shutter members 69 are not in the open position. Alternatively, when the packaging sheet 1 is not supplied to an appropriate position, it is determined whether or not an object is inserted into the machine from the supply port 17B of the top plate 17, and the emergency stop state described above is entered when the object is inserted. You may comprise so that it may switch.

  Further, as the abnormal intrusion detection control, it is determined whether or not the left and right shutter members 69 are in the open position. When the left and right shutter members 69 are in the open position, the abnormal intrusion detection control is terminated, and the left and right shutter members 69 are moved. If the object is not in the open position, it may be determined whether or not an object has been inserted into the machine from the supply port 17B of the top plate 17, and when the object is inserted, the emergency stop state described above may be switched.

  Furthermore, as abnormal intrusion detection control, the return of the left and right shutter members 69 to the open position, the supply of the packaging sheet 1 to the appropriate position of the mounting table 5 (the arrival of the left and right drawer arms 23 to the sheet supply position), Based on the output of the detection means for detecting the slowest end of the return of the lifting and lowering moving body 52 to the receiving position, the return operation of the left and right shutter members 69 to the open position, the packaging for the appropriate position of the mounting table 5 It is determined whether or not the supply operation of the seat 1 and the return operation of the elevating moving body 52 to the receiving position have been completed, and when these operations have been completed, the abnormal intrusion detection control is terminated, and those operations are completed. If any of the above has not ended, it is determined whether or not an object has been inserted into the machine from the supply port 17B of the top plate 17, and when the object has been inserted, the emergency stop state described above is switched. It may be configured to so that.

  The alarm device 128 may be configured to include any one of a buzzer and a lamp, or may be configured to include a plurality of buzzers and lamps. A momentary switch or the like can be adopted as the release switch 129.

    [Another embodiment]

[1] As a packaging machine, a large number of packaging sheets 1 cut to a set length stacked on the sheet placement unit are taken out one by one by the supply means A and automatically supplied to the packaging means B. The packaging sheet 1 that has been cut to a set length may be artificially supplied to the packaging means B.

[2] The packaging machine may be configured not to include the changeover switch 117 but to switch between a stopped state and an operating state by inserting / removing the plug of the packaging machine into / from an outlet.

[3] The packaging means B may be one equipped with the mounting table 5 in a horizontal posture, or one equipped with the lifting means 7 in a vertical posture.

[4] The sealing method of the packaging sheet 1 in the packaging means B is replaced with a heat-sealing method in which the peripheral side of the packaging sheet 1 gathered in the sealing region is pressed by a sealing heater 76 and heat-sealed. Then, a tape sealing method may be employed in which a sealing adhesive tape is attached to the peripheral side of the packaging sheet 1 gathered in the sealing region and sealed.

[5] The insertion detecting means 120 is a photoelectric type configured such that one of the light projecting width of the projector 120A and the light receiving width of the light receiver 120B has the same length as the opening width of the supply port 17B. Alternatively, it may be a retroreflective photoelectric type configured such that at least one of the light projection width and the light receiving width has the same length as the opening width of the supply port 17B. A photoelectric type in which the projector 120A and the light receiver 120B are opposed to each other in an inclined posture along the mounting table 5, or a ceiling so that the light from the projector 120A passes directly above the supply port 17B and reaches the light receiver 120B. A photoelectric type disposed on the upper side of the plate 17 may be used. Further, an ultrasonic sensor or the like may be employed as the insertion detection means 120.

[6] As the crop detection means 121, a retroreflective photoelectric sensor, an ultrasonic sensor, or a pressure sensor for detecting the mounting pressure on the cradle 6 may be employed.

  The control structure of the packaging machine according to the present invention is configured to control the operation of the packaging means for packaging agricultural products such as lettuce, cabbage or broccoli artificially supplied from a supply port to a predetermined position in the machine with a packaging sheet by the control means. It can be applied to packaging machines for agricultural products.

1 Packaging sheet
5 mounting tables
5A entrance
17 top plate 17B supply port 120 insertion detection means 120A projector 120B light receiver 121 crop detection means B packaging means E control means a crop

Claims (2)

And packaging means for packaging the crop that has been artificially supplied to a predetermined position in flight in the packaging sheet with the packaging sheet on the mounting table via落込port mounting table from the supply port of the top plate, controlling the operation of the packaging unit In a control structure of a packaging machine provided with a control means for
An insertion detecting means for detecting insertion of an object from the supply port into the machine is provided between the top plate and the mounting table,
A crop detection means for detecting the presence or absence of a crop at the predetermined position is disposed below the mounting table,
When the crop detection means detects the crop and the insertion detection means switches from the state of detecting the insertion of the object to the state of not detecting the object, the control means changes the packaging means based on the detection information. A control structure of a packaging machine configured to operate and package agricultural products with the packaging sheet. The insertion detection unit is configured so that at least one of the light projection width of the projector and the light reception width of the light receiver has the same length as the opening width of the supply port, and the light projector and the light receiver are arranged to face each other. The control structure of the packaging machine according to claim 1 , which is configured in a photoelectric manner.

Images