JPS6233943B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device for attaching a spout with a cap that serves as an outlet for a liquid such as sake, soybean oil, or youth into a sealed carton. It is.

(Prior art) Conventionally, as a device for the above,
Publication No. 33945 has been disclosed. However, in this device, a heating stage 3 and a plug adhesion stage 4 are provided between the paper container P supply conveyor 1 and the discharge conveyor 2, and the paper container P transferred by the supply conveyor 1 is placed on the heating stage 3. When it arrives, the paper container heating device 1
The cylinder device 20 of 8 brings the heating body 22 close to or in contact with the position where the spout is to be bonded to soften or melt the thermoplastic resin coating there, and then the paper container P is opened by the operation of the first cylinder device 6. Send to plug adhesion stage 4. Meanwhile, during this time, the transfer arm 10 of the spout transfer device 7 is located at the spout chute portion of the spout supply section 8, and its gripping claw 11 grips the spout 40 by the operation of the cylinder device 31, etc. 4
The transfer arm 10, which has gripped the cap 0, first reaches the spout heating device 16 through the rack 15 and the gear 12 by the operation of the first cylinder device 13 and stops, and during the stop, the cylinder device 43 operates and the heating body 46 is brought close to or in contact with the adhesive surface of the spout 40, heated and softened, and the spout 40 heated in this way is transferred to the second cylinder device 14 of the spout transfer device 7 following the heating process. The operation leads to the plug adhesion stage 4, which is located directly below the pressing device 17. The pressing device 17 first retracts the gripping claws 53 using the expansion/contraction cylinder device 56 to grip the spout 40 from above. Then, the spout transfer arm 10 uses its cylinder device 30 to open the gripping claw 11 to release the spout 40 gripped by the gripping claw 53, and then uses the first and second cylinder devices 13 and 14 to transfer the spout supply section. 8, the pressing cylinder device 52 of the pressing device 17 is then operated to push out the spout 40 together with the support 54 of the gripping claw onto the spout adhesion stage 4, and the spout is transferred onto the spout adhesive stage 4 through the above process. The spout 40 is glued to the paper container P.

(Problems to be Solved by the Invention) In the above-mentioned apparatus, a paper container supply conveyor and a discharge conveyor are provided, and a container heating stage and a cap adhesion stage are provided between the two conveyors,
After heating the paper container, it is transferred sideways to the cap adhesion stage, and the cap transfer arm rotates back and forth 90 degrees, stopping once in the middle of the forward movement to heat the cap, and then transfer it to the cap adhesion stage. Since the plug is bonded by a pressing device when transferred to the plug adhesion stage, its operation is complicated and the structure is also complicated. A spout attachment device is incorporated into a carton filling machine that injects and fills the body with liquid contents and seals the carton, and the spout is attached during a series of flow operations as part of the carton manufacturing process. The purpose of this invention is to efficiently manufacture a carton with a spout.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a carton filling machine with a spout supplying sheet below the sealing part of the carton, and a spout supplying sheet that slides down in order along the chute. At the lowest part of the spout, a stopper spring is used to catch the spout, and the heat-adhesive synthetic resin on the underside of the spout is heated to soften or melt it to give it adhesive properties. Each station of the heater part for heating the number of spouts and the spout adhesive part for crimping the spout onto the carton is arranged in equally divided circular positions, and the above division angle interval is set in units of units above the fixed axis. A movable frame that rotates intermittently is provided, and around this movable frame, the same number of plug catchers as the stations are supported, each of which can freely move up and down, each of which has a concave hole in its lower end surface into which the plug fits. ,
This concave hole has an elastic clamping piece on one side for catching and supporting the plug, and a cylinder is formed in the upper part of the concave hole, and the rod of the piston provided in this cylinder is inserted into the concave hole. A pressing plate is attached to this, and a roller is attached to the upper part of each catcher, and this is supported by a substantially circular fixed rail to suspend the catcher in the above-described manner. While rotating around the axis,
By incorporating elevating rails with a U-shaped cross section that move up and down by pressure fluid operation into some of the parts of the fixed rail that correspond to the plug catch part and the plug adhesive part, When the roller reaches the catcher, its roller catches the lowest spout of the spout supply chute into the recessed hole by the clamping action of the elastic clamping piece mentioned above, due to the lowering movement of the lifting rail. The catcher rises and reaches the spout heating heater part at the same time, and the catcher heats the heat-adhesive synthetic resin on the underside of the spout that it captured with the heater to make it adhesive, and then reaches the spout adhesive part. The catcher attaches the cap, which has been heated via the heater section and becomes sticky, to the carton in the conveyance path of the filling machine by lowering the catch, and then attaches the cap to the carton on the conveyance path of the filling machine. By introducing pressure fluid into the aforementioned cylinder of the catcher and pressing the top surface of the piston when the catcher is released from the spout due to the return rise,
The top surface of the glued plug is pressed through the pressing plate at the lower end of the piston rod, and the plug is removed from the catch, thereby completing one cycle of process operation with one intermittent rotation of the movable frame. It is configured to do so.

(Function) As described above, by supporting the same number of plug catchers as the number of stations around the movable frame so as to be able to freely move up and down, and rotating this movable frame intermittently, the number of plug catchers can be removed from the plug catch with one rotation. After heating the spout adhesive part, it can be attached to the carton on the carton conveyance path of the filling machine.In this case, the spout catcher moves from one station to the next. By synchronizing the period of intermittent rotation of the carton moving to the station with the period of intermittently transporting the carton after filling and sealing the contents, the spout heater section between the catch part and the adhesive part of the spout can be adjusted. Even if the number of caps is increased, the spout can be sufficiently heated without reducing the carton production efficiency, and when the catcher is detached from the spout after bonding the spout,
Pressure fluid is introduced into the upper part of the cylinder of the catcher, and the piston provided in the cylinder is pressed, and the catcher rises and separates from the spout while pressing the top surface of the spout through a pressing plate attached to the lower end of the piston rod. , the spout can be bonded extremely reliably.

Embodiment Figure 1 is a plan view schematically showing the main parts of the filling machine. To give an overview, as in the past, the material to be made into a carton is first opened into a cylindrical shape, and then the bottom part is hermetically sealed. This is then supplied from A to the conveyance section of the filling machine. This carton body is conveyed intermittently one after another, and when it reaches the filling part B, the carton body is filled with a certain amount of liquid (for example, alcohol, soy sauce, juice, etc.), and the filled carton body is folded at the top. The top is made to have a crease in the crease part C (it may be made to have a crease first in advance before filling with the contents, and then to make a crease secondarily in the part C).Next, this carton body Then, the sealed portion is heated by the first and second top heaters D and E, and top sealing is performed in the top press F, and the carton body is sealed to obtain a sealed carton K. Therefore, in this invention, a spout bonding device G is incorporated in a series of flow operation steps to adhere a spout L to the sealed carton K during transportation and send it to the take-out section H of the filling machine. This spout adhesive device G is provided with a sensing device M, such as a phototube or a proximity switch, in the path of the carton so as to operate in conjunction with the transport of the carton, and is activated by a signal sent from the sensing device M. Each time a carton is sent, the single spout L is bonded to the previous carton, so that it operates in an orderly manner.

The details of the above-mentioned spout attachment device G will be described later, but the catch of the spout catches the spout L by making one rotation around a fixed axis, and heats the adhesive surface of the spout to attach a heat-adhesive synthetic resin. The device performs one cycle of operation in which it becomes viscous and presses it onto the intended location of the spout on the carton K. In the case shown, the catcher rotates in 90 degree increments, The spout is caught in the part o, passes through the first heater part p and the second heater part q, reaches the spout adhesive part r, where the spout L is crimped onto the carton K, and then the spout is caught again in the spout catch part. However, the movement is not limited to the intermittent movement of 4 divisions as described above, but may be performed as necessary by making intermittent rotations of 72 degrees in order to stop the 5 divisions, for example. For example, even if a third heater section is installed, there is no change in work efficiency. In the case shown in the figure, each necessary part o,
Since p, q, and r are installed, the sensing device M is
It is appropriate to install it three places in front of the adhesive part r.

Although the case where the top seal is gable-type is shown above, the present invention is not limited to this type, and a carton having a brick-type structure may also be used.

Figures 3 and 4 are views showing an example of a spout L. The spout has a mounting seat at the base of the mouth pipe A that serves as an outlet, and a heating means is attached to the bottom surface of this mounting seat. Therefore, it has an adhesive layer (C) made of a thermoadhesive synthetic resin that is sticky, and the mouth tube (A) is provided with a cap that can be freely attached or detached (for example, a screw cap).

5 to 9 are diagrams showing parts of the spout adhesive device G, in which the carton K is of a gable top type as shown in FIG. 2, and the spout L is attached to the inclined surface of the carton K. Above, the spout is inclined like T-U with respect to the vertical line S-T, so Figure 5 shows the T-U of the spout.
This is a cross-sectional view taken with the lines vertical, and FIG. 6 is a schematic plan view showing the arrangement of the main parts. In FIG. 5, reference numeral 1 denotes an upper frame fixed to the frame of the filling machine, and has a fixed shaft 2 at its center. The fixed shaft 2 is fixed to the upper frame 1 and to the lower frame 3, which is also fixed. 4 is a movable frame rotatably mounted on the fixed shaft 2, and a sprocket 5 provided at the top.
90 through the endless chain 6 from the drive mechanism described later.
It rotates intermittently by degrees (the figure shows a movement divided into four equal parts). A catcher 7 is supported at four evenly spaced positions around the movable frame 4 by slide bearings 8 so as to be able to move up and down. These catchers 7 normally maintain their raised positions and can rotate together with the movable frame 4.
Therefore, a substantially annular rail 9 is fixed to the movable frame 4, and rollers 10 are attached to one side of each upper end of the catcher 7, so that the rollers 10 ride on the rails 9 and rotate while lifting the catcher 7. Keep it. Also, since the catcher 7 must be lowered at the plug catch part o and the plug adhesive part r, a part of the rail 9 is cut out as shown in FIG. 9th
A short elevating rail 11 having a U-shaped cross section holding rollers 10 as shown in the figure is used for each. This short elevating rail 11 is connected to cylinders 12 and 1 each installed on the movable frame 4 by means of fluid operation (for example, compressed air).
The cylinder 1 is supported by the piston rod 14 of No. 3, and is usually located on the same plane as the fixed rail 9
2 or 13 and the piston rod 14
When pressed down, the elevating rail 11 is configured to be able to descend lower than the fixed rail 9.

In the figure, a sixth drive device is used to transmit intermittent rotation to the sprocket 5 via the endless chain 6.
As shown in the figure, a fluid-operated cylinder 15 such as an air cylinder is placed in place, and thereby the rack 16 is
The rack 16 controls the reciprocating motion of the rack 16, and causes the pinion 17 meshing with the rack 16 to rotate reciprocally. During this reciprocating rotation of the pinion 17, one rotation, for example, the forward rotation, is regarded as idle rotation, and the backward rotation is transmitted to the drive sprocket 19, which is spanned by the chain 6 via the intermediate wheel 18, so that the pinion shaft 20 and the drive sprocket 19 is interposed with a mechanism that transmits rotation only in one direction (only during backward motion), such as a ratchet mechanism, but the example shown in FIG. 2
A cylindrical body 22 fixed to the sprocket shaft is provided between the sprocket shaft 21 and the sprocket shaft 21.
2, a cam-shaped surface 23 is formed on the pinion shaft 20, and a roller 24 is interposed between the cam-shaped surface 23 and the inner surface of the cylindrical body 22 so that it can freely roll. During forward movement, the cam-shaped surface 23 presses the intervening roller 24 against the inner circumferential surface of the cylindrical body 22 by its curved surface, so that the rotation of the pinion 17 is transmitted to the sprocket 19. However, during forward movement, the curved surface of the cam surface 23 Since there is a tendency for the sprocket to separate from the roller 24, a type of freewheel mechanism that prevents rotation from being transmitted to the sprocket 19 is inserted.

FIG. 7 shows a state in which the catcher 7 is stopped at the plug catch portion o. The spout L is supplied from the upper part of the spout supply chute 25, slides down the chute 25, and waits at the catch position of the catcher 7. The catcher 7 is lifted up by the fixed rail 9 and transferred to the elevating rail 11, where it stops. At this time, pressure fluid is supplied to the cylinder 12 at the catch position, so the lifting rail 11 is lowered by the piston rod 14 while holding the rollers 10, and the catcher 7 pushes the stop spring 26. The plug L, which is open and in the standby position, is caught in the lower end port, and then fluid is introduced into the lower part of the cylinder 12 and the piston rod 14 is returned to its position, so that the elevating rail 11 rises and returns to its original position. At that time, the movable frame 4 starts rotating again, so the roller 10 is transferred from the lifting rail 11 to the fixed rail 9 and is sent to the next station, the first heater part p, in a lifted state.

FIG. 8 is a diagram showing a part of this first heater part p, in which the spout L caught by the catcher 7 is stopped on the electric heater N fixed in the part, and the lower part of the mounting seat is glued. The movable frame 4 is heated and the movable frame 4 is heated.
By the rotation of , it is sent to the next station, the second heater section q. The configuration and operation of the second heater part q are generally the same as those of the first heater part p, so they are omitted from the drawing.

The spout L thus heated by the first and second heater parts reaches the spout adhesive part r by the rotation of the movable frame 4. When it stops at the adhesive part r, the said spout catch part o
As in , the roller 10 of the catcher 7 is held by the lifting rail 11, and at the same time, pressure fluid acts on the cylinder 13 installed at the adhesive part r, so the catcher 7 is pushed down and stopped below it as shown in FIG. (If necessary, the carton's spout installation position can be heated in advance with heated air so that the heat-adhesive synthetic resin in that area becomes viscous.) ) Then, when the spout L is crimped, pressure fluid is introduced into the lower part of the cylinder 13 and the piston rod 14 rises, and the elevating rail 11 returns to the position of the fixed rail 9, so the spout L is glued to the carton K. Only the catcher 7 remains, and then, due to the rotation of the movable frame 4, the roller 10 rolls on the fixed rail 9, and the catcher 7 returns to the plug catch part o.
This completes one cycle of operation in which the valve L is stopped and a new plug L is caught again as described above, but the positions of the stations o to r are set at angular intervals of 90 degrees. , since the catcher 7 in the movable frame 4 is also at the equally divided position, the movable frame 4 is divided into 90
By performing intermittent rotation in units of degrees, each catcher 7 can simultaneously perform a predetermined operation at each of the stations o to r.

In the above-mentioned spout crimping operation, when the catch 7 is separated from the spout after bonding the spout to the carton and leaving only the spout, the lower end recessed hole 27 of the catcher 7 as shown in FIGS. 8 and 9. The cap of the spout L fitted inside is held by an elastic clamping piece 29 provided in the elongated hole 28 on one side of the concave hole.
When the catcher 7 presses the mounting seat of the spout and then rises, it tends to pull the spout L in the direction in which it is intended to be separated. In order to avoid this unreasonable effect, the catcher 7 has a recessed hole 27 as shown in FIG.
A cylinder 30 is formed in the upper part of the cylinder 3.
The rod 32 of the piston 31 provided in the recessed hole 2
7, and a press plate 33 is attached to it. Normally, the piston 31 can move up and down freely, but the cylinder 3
When pressure fluid (for example, compressed air) is fed into the upper part of the piston 31, the piston 31 is pushed downward and the pressure plate 3
3 to press the top surface of the spout L. Pressure fluid enters and exits the cylinder 30 through a port 35 formed at the top of the cylinder 30 through a flexible tube 34 connected to one side of the catcher 7.

This introduction of pressure fluid into the cylinder 30 is carried out only before the catcher 7 is raised at the plug bonding part r, so its action is carried out in conjunction with the rotation of the movable frame 4. For this reason, the fifth
As shown in FIG. 6, a truncated conical fixed valve body 36 is provided on the fixed shaft 2, and this is fitted into a concave portion of the same shape formed in the flange portion 37 of the movable frame 4. Valve body 36
is a rotation prevention rod 3 provided on a collar 38 fixed to a fixed shaft 2
9 prevents rotation, but this tsuba 38
A spring 40 provided between the valve body 36 and the valve body 36 presses the valve body 36 downward to keep the sliding portion thereof in close contact with each other. A pressure fluid guide hole 41 is formed at the center of the fixed shaft 2 at the lower end to which a pressure fluid passage pipe can be connected, and a port 42 is formed from the guide hole 41 toward the crimping part r side toward the valve body 36. form. Then, a through hole 43 that functions as a slide valve is formed in the flange of the movable frame 4 in a plane at the same height as this port 42 and with a phase of 90 degrees, and a pipe 44 that communicates with this through hole 43 is attached. are connected to the above-mentioned flexible tubes 34 provided in each catcher 7, and furthermore, as shown in FIG.
A discharge port 45 for releasing the pressure fluid in the cylinder 30 of the catcher 7 is formed in the valve body 36 at a position facing , thus introducing the pressure fluid into the cylinder 30 of the catcher 7 only at the spout bonding part r, When the catcher 7 separates from the plug L, the pressure applied to the piston 31 causes the pressure plate 33 to
The catch 7 is moved upwardly while pressing the plug L through the terminals 1 and 2 to separate it from the plug L, and at the other stations o, p, and q, the piston 31 in the cylinder 27 is inactive. , to be able to move up and down freely.

(Effects of the Invention) Since the present invention is configured as described above, the spout can be bonded by a series of flow operations as part of the carton filling and sealing operation, and
One rotation of the movable frame completes one cycle of operation from catching the spout to the necessary heating and adhesion of the spout, so even if the heater part of the spout is increased, the carton Without fear of reducing production efficiency, the spout is caught by the catch in the catch part and supported by its elastic clamping piece, passes through the heater part, reaches the spout adhesive part, and is crimped onto the carton. Therefore, it is relatively simple mechanically, and when the catch is removed from the spout after the spout is attached, pressure fluid is introduced into the upper part of the piston provided in the cylinder of the catcher to press the piston. As a result, the catcher moves up and away from the spout while pressing down on the top surface of the spout via a pressing plate provided at the lower end of the piston rod, which ensures that the spout is firmly adhered to the filling machine. This device is effective as a carton plug attachment device.

[Brief explanation of the drawing]

The drawings show an embodiment of a carton plug attachment device for a filling machine according to the present invention, and FIG. 1 is a plan view schematically showing the main parts thereof. Figure 2 is a side view of the carton with the spout attached. FIG. 3 is a front view of the spout. FIG. 4 is a plan view of the same as above. Fig. 5 is a front view of the spout adhesive device taken along the line V-V in Fig. 6 (however, the center line U-T of the spout is perpendicular). An explanatory diagram showing the main parts on a plane. FIG. 7 is a side view of the spout catch part. FIG. 8 is a partially cutaway side view of the spout heater section. FIG. 9 is a cutaway side view of the spout when it is attached. 1... fixed upper frame, 2... fixed axis, 4... movable frame,
5...Sprocket, 6...Endless chain, 7...
...Cap catch, 8...Slide holder, 9...
... Fixed rail, 10 ... Roller, 11 ... Elevating rail, 12, 13 ... Cylinder, 14 ... Piston rod, o ... Plug catch part, p ... First heater part, q ... Second heater Part, r...Plug adhesive part.

Claims (1)

[Claims] 1. In a carton filling machine, a spout is provided with a spout supplying chute below the sealing part of the carton, and the spout is adapted to receive the spout with a stop spring at the lowest point of the spout that slides down in sequence along the chute. An appropriate number of heater parts for heating the stopper to soften or melt the heat-adhesive synthetic resin on the underside of the stopper and provide adhesive properties, and a opening for crimping the stopper to the carton. Each station of the stopper adhesive part is arranged in an equally divided circular position, and a movable frame that rotates intermittently in units of the above-mentioned division angle intervals around a fixed axis is provided above the station, and around this movable frame there are arranged the same number of stations as the above-mentioned stations. , each of which supports a spout catcher that can be moved up and down, each of which has a concave hole in its lower end surface into which the spout fits, and an elastic clamp on one side of the concave hole to catch and support the spout. A cylinder is formed in the upper part of the recessed hole, and a piston rod provided in the cylinder is inserted into the recessed hole and a pressing plate is attached to this. A roller is attached and supported by a substantially annular fixed rail so that the catcher can be rotated about the fixed axis while being suspended in an upright position. In addition, by incorporating elevating rails with a U-shaped cross section that move up and down by pressure fluid operation in a part of the part where the spout is attached, the rollers of the catch that reach the spout catch can be moved up and down by pressure fluid operation. Due to the descending movement of the elevating rail, the lowest spout of the spout supply chute is caught in the recessed hole by the clamping action of the aforementioned elastic clamping piece and raised, and at the same time, the spout for heating the spout is lifted. The catcher that has reached the heater part heats the heat-adhesive synthetic resin on the bottom surface of the spout with the heater to make it adhesive, and the catcher that has reached the spout adhesive part passes through the heater part. The cap, which has been heated and becomes sticky, is attached by pressing it onto the carton on the conveyance path of the filling machine by the lowering movement of the catcher, and then the catcher removes the cap by returning and rising on the lifting rail. When detaching from the catcher, pressurized fluid is introduced into the cylinder of the catch to press the top surface of the piston, thereby pressing the top surface of the spout adhered to the piston rod through the pressing plate at the lower end of the piston rod. A carton spout attachment device for a filling machine, which is configured to separate the carton from the catcher, thereby completing one cycle of process operation with one intermittent rotation of the movable frame.