JP4620141B2 - Stacking and unloading device - Google Patents

Description

  The present invention relates to a stacking / unloading apparatus that enables containers to be stacked and unloaded automatically. More specifically, the present invention automatically stacks containers containing cooked cooked rice and the like in multiple stages. The present invention relates to a stacking / unloading apparatus that enables loading on a carriage for loading and unloading to a predetermined place.

  In commercial rice cooking equipment, cooked rice cooked in the rice cooking line is housed in a dedicated container, transported one after another on the transportation line, and then stacked on a trolley by human power and transported to a truck for shipping. It has been done.

  However, since cooked rice contains water and is heavy, it is quite labor intensive to stack containers containing the food on a cart manually, and it is very inefficient. In order to solve such drawbacks, for example, in Patent Document 1, a container transfer device that lifts a container containing cooked rice by a chuck head having a chuck mechanism, moves the container horizontally, and places the container on a carriage. Has been proposed. However, this apparatus has a problem in that when the containers are stacked in multiple stages, the chuck head has to repeat the raising and lowering operation and the horizontal movement many times, and the efficiency is poor.

In Patent Document 2, although not a container for storing cooked rice, containers such as trays and pallets that are sequentially conveyed are lifted upward by a locking member at a fixed position and stacked on the containers that are subsequently conveyed. There has been proposed an apparatus for automatically stacking containers in multiple stages at a fixed position on a transport line by repeating the operation. However, this device does not give any consideration to placing the stacked containers on a carriage so that they can be easily transported by simply stacking the containers being sequentially transported in multiple stages on the transport line. It has not been done.
Japanese Utility Model Publication No. 7-19244 JP 2004-168440 A

  The present invention was made in order to eliminate the above-mentioned disadvantages in the prior art, and enables stacking of containers efficiently with simple operation and allowing the containers to be placed on a cart for unloading. It is an object to provide a carry-out device.

The present invention solves the above problem by reciprocating between a receiving position and a stacking position that are separated in the horizontal direction, and a reciprocating moving table for transporting containers to be stacked from the receiving position to the stacking position; ; Container support means for supporting containers to be stacked; elevating device for raising and lowering the container support means in the vertical direction with respect to the stacking position; and accepting an unloading cart for placing stacked containers and carrying them out A space provided in a lifting path of the container support means; and a container on the reciprocating table in which the container supporting means is at least in a stacking position while controlling the reciprocating motion of the reciprocating table. The first position where the container can be supported and the lower surface of the container supported and lifted by the container support means are higher than the upper surface of the container which is then transported to the stacking position. The position of the The A controller for controlling the operation of the lifting device to lift between a third position for placing on the carry-out cart,
(A) moving the reciprocating platform from the receiving position to the stacking position;
(B) When the reciprocating platform is in the stacking position, the container support means descends from the second position to the first position, and then rises toward the second position while supporting the container. Operate the lifting device,
(C) moving the reciprocating platform from the stacking position to the receiving position;
The operations (a) to (c) are repeated as many times as the number of steps to be stacked,
(D) operating the elevating device so that the container supporting means supporting the containers of the number of stages to be stacked rises or descends to the third position;
The problem is solved by providing a stacking / unloading device comprising a control device.

  In the stacking / unloading apparatus of the present invention, as described above, the reciprocating table is reciprocated between the receiving position and the stacking position, and the container supporting means is moved to the first position and the second position by the lifting device. It is possible to stack the containers in a desired number of stages by a simple operation of repeating the lifting and lowering operation between them, and after stacking in multiple stages, the container support means is moved to the third position. If the stacked containers are placed on the carry-out cart, the stacked containers can be carried out to the outside as they are.

  In the stacking and unloading apparatus of the present invention, the space for receiving the unloading carriage may be in the lifting path of the container support means, including the stacking position, and may be in any position above and below, While the stacking position in the stacking and unloading apparatus of the present invention is usually higher than the floor surface, the unloading carriage travels on the floor surface, so the space for receiving the unloading carriage is more than the stacking position. Preferably it is below. Since the reciprocating table can move between the stacking position and the receiving position that are separated in the horizontal direction, even if the space for receiving the unloading cart is provided below the stacking position In addition, even when the space for receiving the unloading carriage is provided on the same horizontal plane as the stacking position, the container support means can be mounted on the unloading carriage by retracting the reciprocating moving stand to the receiving position. It is possible to move down to the third position where the containers stacked in the stack are placed without any trouble.

  In the stacking / unloading apparatus of the present invention, it is preferable that the container support means for supporting the container is provided at least one pair on the left and right or front and rear in the container transport direction by the reciprocating table. From the front-rear direction, the container can be stably supported and moved up and down.

  In the stacking / unloading apparatus of the present invention, the container support means may be of any mechanism as long as it can support the container and can be moved up and down, but it abuts the lower surface of the flange portion of the container. A support member having an upper surface for supporting the container, the support member being rotatable between a support position where the upper surface is horizontal and a retracted position where the upper surface is tilted upward from the horizontal. Preferred is a container support means provided with a support member that returns to a support position by its own weight and / or elastic force when there is no external force. The elastic force is obtained, for example, by urging the support member back to the support position with a spring, rubber, or other elastic member.

  When the container support means includes such a support member, when the container support means descends from the second position to the first position, the lower surface of the support member comes into contact with the buttocks of the container. Since the support member rotates to the retracted position, the container support means is lowered without any resistance, and when the container support means descends and the contact between the support member and the buttock of the container disappears, the support member Is automatically returned to the support position by its own weight and / or elastic force, and the container can be supported. Thus, the position where the support member in the container support means can be in a state capable of supporting the container is the first position, and when the container support means is raised from this position, the upper surface of the support member is the container collar. The bottom surface of the container is abutted to support the container and lift the container. Since the second position where the container is lifted by the container support means is a position where the lower surface of the lifted container is next to the upper surface of the container that is transported to the stacking position by the reciprocating platform, The transport of the next container to the stacking position by the reciprocating table is performed without any trouble.

  Further, the stacking / unloading apparatus according to the present invention includes a part of the rotatable support member provided in the container support means or the support member mechanically when the container support means is further lowered from the third position. It is desirable to provide an abutting member that abuts on the abutting piece that is coupled to the rotating member and rotates the supporting member from the supporting position to the retracted position. Thereby, the support member can be rotated to the retracted position by further lowering the container support means from the third position where the stacked containers are placed on the carry-out carriage. The support member does not get in the way when unloading.

  The container targeted by the stacking / unloading apparatus of the present invention has a shape that can be stacked, and can be supported and lifted by the support member provided in the container support means in the stacking / unloading apparatus of the present invention. Any container may be used as long as it has a partial shape that can be formed. A container for storing cooked cooked rice usually has a shape designed for stacking and is provided with a collar portion that can be supported by a support member. It is a typical container as a container targeted by the apparatus.

  In addition, as a partial shape that can be supported and lifted by the support member provided in the container support means, the collar portion is most typical, but this partial shape is not limited to the collar portion. For example, it may be a horizontal dent provided on the side of the container, or may be a space formed between the bottom surface of the container and the surface on which the container is placed. When the partial shape is such a dent or space, the support member provided in the container support means is, for example, a plate-like support member, which is driven into the dent or space by the driving means. What is necessary is just to make it move forward and backward. When the plate-like support member moves into the recess or the space, the container support means becomes in a state capable of supporting the container. Conversely, when the plate-like support member is retracted, the supportable state is released and the container support means freely moves up and down. be able to. Furthermore, the partial shape may be simply the side of the container. In this case, the support member may be a chuck mechanism that moves forward and backward with respect to the container side and grips the container side. However, in any of these cases, the container support means and the release of the support require a driving force or some complicated mechanism for operating the support member. Most preferred is a combination of support members that are pivotable about a horizontal axis with an upper surface that supports the surface. In addition, the collar part does not necessarily need to be provided in the perimeter of a container, and should just be provided in the both sides which a container opposes. Further, the position is not limited to the upper part of the container, and may be the central part in the height direction or the vicinity of the bottom part.

  According to the stacking / unloading apparatus of the present invention, the containers sequentially conveyed are multistaged by a desired number of stages by a very simple mechanical operation of the reciprocating movement of the reciprocating table and the lifting / lowering movement of the container supporting means by the lifting / lowering apparatus. Since it can be stacked and placed on the unloading cart, containers can be efficiently and speedily stacked and placed on the unloading cart with a relatively simple mechanical structure and relatively simple control operation. And the advantage that it can carry out outside is acquired.

  Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the illustrated one.

  FIG. 1 is a side view showing an example of the stacking / unloading apparatus of the present invention. In FIG. 1, 1 is a stacking / unloading apparatus of the present invention, 2 is its frame, 3 is a reciprocating table, and 4 is a container support means. Reference numeral 5 denotes a drive device for reciprocating the reciprocating table 3 in a horizontal direction indicated by an arrow between an acceptance position A indicated by a solid line in FIG. 1 and a stacking position B indicated by a broken line. The reciprocating table 3 receives the driving force of the driving device 5 and travels on the rail 7 by the wheels 6, 6... Attached to the reciprocating table 3. Move back and forth between them.

  The receiving position A is a position where the container P conveyed from the outside by a conveying device such as rotating rollers 8, 8, 8... B is a position where the container P placed on the reciprocating table 3 at that position can be lifted and stacked by the container support means described later. In a remote location. In addition, t is a collar part of the container P.

  FIG. 2 is a diagram showing only the reciprocating table 3 taken out for convenience. A pair of sprockets 31, 31 are rotatably attached to the front and rear of the reciprocating table 3 at intervals in the left and right directions in the reciprocating direction of the reciprocating table 3. A top chain 32 is stretched between them. Rotational power from the electric motor 33 is transmitted to the front sprocket 31 through appropriate transmission means, and the sprocket 31 is rotated by this rotational power, and the top chain 32 moves forward or backward. Since the reciprocating table 3 is configured as described above, when the container P conveyed from the outside is received at the receiving position A by a conveying device such as the rotating rollers 8, 8, 8..., The top chain 32. The container P can be moved in the forward direction on the reciprocating table 3 by rotating the container from the rear to the front. Note that the mechanism for moving the received container P in the forward direction on the reciprocating platform 3 is not limited to the top chain described above, and may be, for example, a belt conveyor or a rotating roller provided with a driving device. Also good.

  Returning to FIG. 1, the member indicated by reference numeral 9 above the right shoulder of the container P at the receiving position A is a position detecting means for detecting the position of the container P. When it is detected by the position detection means 9 that the container P has reached a predetermined position on the reciprocating platform 3, the signal is sent to the control device 10, and the control device 10 based on the signal, The electric motor 33 of the reciprocating table 3 is stopped, the movement of the top chain 32 is stopped, and the container P can be stopped at a predetermined position on the reciprocating table 3.

  As the position detection means 9, a suitable contact detection means such as a contact type such as a limit switch or a non-contact type using a laser, an ultrasonic wave, an eddy current or the like can be used. Further, the arrangement position is not limited to the position shown in FIG. 1, and may be attached to any position as long as it can be detected that the container P has reached a predetermined position, and may be attached to the frame 2. Then, it may be attached to the reciprocating table 3.

  The control device 10 is also connected to the drive device 5 so as to be able to send and receive signals, and controls the reciprocating movement between the receiving position A and the stacking position B of the reciprocating platform 3. In the illustrated example, a piston mechanism that operates with a fluid pressure such as hydraulic pressure or air pressure is employed as the driving device 5, but the driving device 5 includes the reciprocating moving table 3 at the receiving position A and the stacking position. Any mechanism can be used as long as it can be reciprocated with the B. For example, a moving mechanism using a linear motor, a moving mechanism using a chain conveyor, etc. Also good. Further, instead of the driving device 5, the driving device may be mounted inside the reciprocating table 3 so that the reciprocating table 3 is a self-propelled reciprocating table 3 that travels on the rail 7 by itself. . In this case, needless to say, the operation of the drive device mounted on the reciprocating table 3 is controlled by the control device 10.

  11 and 11 are guide rods for raising and lowering the container support means 4, 12 is a lifting motor equipped with an appropriate reduction gear (not shown), and 13 is a wire for connecting the lifting motor 12 and the container support means 4. The guide rods 11, 11, the lifting motor 12, and the wires 13 constitute a lifting device for the container support means 4. The control device 10 is also connected to the lifting motor 12 so as to be able to send and receive signals. The control device 10 controls the operation of the container supporting means 4 to move up and down. Of course, the lifting device may be of any mechanism as long as it can lift and lower the container support means 4 within a predetermined range in the vertical direction. The container support means 4 may be moved up and down by a piston mechanism that reciprocates in the vertical direction, or the chain mechanically connected to the container support means 4 may be moved up and down by an electric motor and gears. good.

  Reference numerals 14 and 14 denote sliding bearings into which the guide rods 11 and 11 are inserted. Reference numeral 15 denotes a rotating shaft pivotally supported around the horizontal axis with respect to the container support means 4. Reference numerals 16 and 16 denote rotating shafts. Support members fixed to the moving shaft 15, 17 and 17 are also contact pieces fixed to the rotating shaft 15, and 18 restricts the rotation range of the supporting members 16 and 16 fixed to the rotating shaft 15. A stopper, which is attached to the container support means 4. Reference numeral 19 denotes an unloading carriage, and C denotes a space for receiving the unloading carriage 19, and is provided below the stacking position B in the illustrated example.

  FIG. 3 is a front view of the stacking / unloading apparatus 1 shown in FIG. 1, FIG. 4 is a plan view thereof, and the same members as those in FIG. However, the control device 10 is omitted in FIGS. As shown in FIGS. 3 and 4, a pair of container support means 4, 4 is provided on each of the left and right sides of the reciprocating table 3 in the reciprocating direction. One pair of container support means 4 and 4 may be provided in the front and rear in the moving direction of the reciprocating table, or two pairs may be provided in each of the left and right and front and rear. In the illustrated example, two support members 16 and 16 are provided for each container support member 4, and one pair is provided. However, the width of the support member 16 is increased so that one support member 16 is provided for each container support member 4. It may be individual or may be three or more.

  In FIG. 3, 20 and 20 indicate the contact pieces 17 and 17 when the containers P stacked by the container support means 4 and 4 are further lowered beyond the third position where the containers P are placed on the carry-out carriage 19. A contact member that contacts each of the support members 16 and 16 and rotates the support members 16 and 16 upward. In FIG. 3, only one pair of contact members 20, 20 is shown on the left and right in the reciprocating direction of the reciprocating table 3, but the contact members 20, 20 correspond to the contact pieces 17, 17. When, for example, as shown in the plan view of FIG. 4, a total of four contact pieces 17, 17 are provided, one each before and after the reciprocating table 3 in the reciprocating direction. That is, a total of four contact members 20, 20 are provided, one in each pair before and after the reciprocating table 3 in the reciprocating direction. In addition, when it is sufficient to rotate the support members 16 and 16 upward, the contact piece 17 and the corresponding contact member 20 may be one in each container support means 4. Further, when the contact member 20 is directly contacted with the support member 16 and the support member 16 is rotated upward, the contact piece 17 may not be provided.

  FIG. 5 is a cross-sectional view taken along the line X-X ′ in FIG. 4, and is a diagram showing only the rotating shaft 15, the support member 16, the contact piece 17, and the stopper 18 for the sake of convenience. The support member 16 has an upper surface 16 a that contacts the lower surface of the flange portion t of the container P, and is fixed to a rotation shaft 15 that is pivotally supported by the container support means 4. FIG. 5A shows a state in which the support member 16 is in a support position where the upper surface 16a is horizontal. In this state, since a part of the contact piece 17 fixed to the rotating shaft 15 is in contact with the stopper 18, the upper surface 16a of the support member 16 is directed downward from the horizontal, that is, clockwise in the drawing. The rotation range of the support member 16 is restricted so that it cannot rotate. When the support member 16 is in the support position, not the contact piece 17 but a part of the support member 16 contacts the stopper 18 so that the upper surface 16a of the support member 16 does not rotate downward than horizontal. Also good. Further, instead of pivotally supporting the pivot shaft 15 on the container support means 4, the pivot shaft 15 is fixed to the container support means 4 and the support member 16 and the contact piece 17 are pivoted. You may make it attach to the circumference | surroundings of the axis | shaft 15 so that rotation is possible. In this case, the contact piece 17 is mechanically coupled to the support member 16, and both are configured to rotate together around the rotation shaft 15.

  FIG. 5B shows a state where the upper surface 16a of the support member 16 is in a retracted position inclined upward from the horizontal. As described above, when an external force is applied to the support member 16, the upper surface of the support member 16 is free to rotate upward in the drawing, that is, counterclockwise in the drawing together with the rotation shaft 15, and is not restricted. Further, when there is no external force, the support member 16 is configured to return to the support position by its own weight. In order to make sure that the support member 16 returns to the support position, a member having an elastic force such as a spring or rubber is used in addition to the weight of the support member 16 or depending on the weight of the support member 16. Instead, the support member 16 may be biased in a direction to return to the support position.

  Hereinafter, the operation of the stacking / unloading apparatus 1 of the present invention controlled by the control apparatus 10 will be described with reference to the drawings.

  FIG. 6 shows a state at the start of operation of the stacking / unloading apparatus 1 of the present invention. At the start of operation, the reciprocating platform 3 is in the receiving position A. When the container support means 4 supports and lifts the container, the bottom surface of the lifted container P is then transported to the stacking position. The second position is higher than the upper surface of the coming container P. When the container support means 4 is in the second position, the upper surfaces of the support members 16, 16 provided in the container support means are in the position indicated by reference numeral II on the right side in the drawing. The control device 10 rotates the electric motor 33 of the reciprocating platform 3 to start the movement of the top chain 32 in a direction in which the container P is conveyed from the left side to the right side in the drawing. In this state, for example, when the first container P1 is transported by an external transport device composed of the rotating rollers 8, 8,..., The top chain 32 on the reciprocating table 3 also moves in the same transport direction. Therefore, the container P1 is received by the reciprocating table 3 from an external conveying device, and is conveyed from the left to the right in the figure on the reciprocating table 3 by the top chain 32. When the container P1 reaches a predetermined position on the reciprocating platform 3, the position detection means 9 detects it and sends a signal to the control device 10. When the control device 10 receives a signal from the position detection means 9, the control device 10 stops the electric motor 33 and the container P <b> 1 stops at a predetermined position on the reciprocating platform 3.

  When the container P1 stops at a predetermined position on the reciprocating table 3, the control device 10 operates the driving device 5 to move the reciprocating table 3 from the receiving position A to the stacking position B. When the driving device 5 is a piston mechanism, the reciprocating table 3 may be positioned at the stacking position by setting the extension length of the piston in advance. Appropriate position detection means such as a limit switch is provided for detecting that the stacking position has been reached, and when the detection signal is received from the position detection means, the reciprocating platform 3 moves to the stacking position B. You may make it judge that it reached | attained and stop the operation | movement of the drive device 5. FIG.

  When the reciprocating table 3 on which the container P1 is placed reaches the stacking position B, the control device 10 operates the lifting motors 12 and 12 and, as shown by the downward arrows in FIG. Is lowered. In the middle of the lowering, the lower surfaces of the support members 16 and 16 provided in the container support means 4 and 4 come into contact with the flange t of the container P1, and when the container support means 4 and 4 are still lowered, the rotating shaft 15 , 15 and turn upward. Therefore, the support members 16 and 16 do not become an obstacle to the downward movement of the container support means 4 and 4.

  When the container support means 4 and 4 are still lowered, as shown in FIG. 9, the contact between the flange t of the container P1 and the support members 16 and 16 is released, and the support members 16 and 16 have their own weight and / or elasticity. Due to the force, it returns to the support position where the upper surface is horizontal. The positions of the container support means 4 and 4 in which the support members 16 and 16 are returned to the support position and can support the container P1 are the first position, and the container support means 4 is in the first position. In this case, the upper surfaces of the support members 16 and 16 provided in the container support means are located at the position indicated by symbol I on the right side in the drawing. When the container support means 4 and 4 are lowered to the first position, a limit switch (not shown) is operated to send a signal to the control device 10, and the control device 10 controls the lifting motors 12 and 12 to support the container. The lowering of the means 4 and 4 is stopped.

  The detection that the container support means 4, 4 has reached the first position is not limited to the limit switch, and other non-contact type position detection means using laser, ultrasonic waves, eddy currents, etc. may be used. Alternatively, the descending distance from the second position to the first position may be obtained in advance, and the lifting motors 12 and 12 may be operated for a time corresponding to the descending distance. Furthermore, after the support members 16 and 16 have once rotated upward, it may be determined that the first position has been reached by detecting the return to the horizontal state.

  When the container support means 4 and 4 stop descending at the first position, the control device 10 (not shown) then operates the elevating motors 12 and 12 to move the container support means 4 and 4 from the first position. Raise towards the second position. When the container support means 4 and 4 are lifted from the first position shown in FIG. 9, the upper surfaces of the support members 16 and 16 at the support position come into contact with the lower surface of the flange portion t of the container P1 in the middle of the rising path. The upper surfaces of the support members 16, 16 are restricted so that they do not rotate downward, so that the container P1 is supported and lifted upward.

  FIG. 10 shows a state in which the container support means 4 and 4 are raised to the second position while supporting the container P. When the container support means 4 and 4 are raised to the second position, a limit switch (not shown) is shown. Is operated to send a signal to the control device 10, and the control device 10 controls the operation of the lifting motors 12, 12 to stop the rise of the container support means 4, 4. The detection that the container support means 4, 4 has reached the second position is not limited to the limit switch, but can be performed using an appropriate position detection means, similarly to the detection that the container support means 4, 4 has reached the first position. it can.

  When the container support means 4 and 4 support the container P1 and move up to the second position, the control device 10 then sends a signal to the drive device 5 to move the reciprocating platform 3 as shown in FIG. Move from the stacking position B to the receiving position A. When the driving device 5 is a piston mechanism, the reciprocating table 3 may be positioned at the receiving position A by setting the contraction length of the piston in advance, or the reciprocating table 3 may be received. Appropriate position detection means such as a limit switch is provided for detecting that the position A has been reached, and the reciprocating platform 3 reaches the receiving position A when a detection signal is received from the position detection means. It may be determined that the operation of the driving device 5 is stopped. The reciprocating table 3 is moved from the stacking position B to the receiving position A after the container P1 is lifted upward from the reciprocating table 3 so that the container supporting means 4 is completely moved to the second position. Instead of waiting for arrival, it may start while ascending from the first position to the second position.

  When the reciprocating table 3 reaches the receiving position A and stops, the control device 10 operates the electric motor 33 provided on the reciprocating table 3 to start the movement of the top chain 32 and conveys it from an external conveying device. The next container P <b> 2 that has been received is received by the reciprocating platform 3.

  When reception of the next container P2 is completed and the movement of the top chain 32 is stopped, the control device 10 sends a signal to the driving device 5, and the reciprocating platform 3 is moved to the stacking position B as shown in FIG. Move. At this time, the container support means 4, 4 has a lower bottom surface of the supporting container P <b> 1 than the upper surface of the next container P <b> 2 that is placed on the reciprocating table 3 and is transported to the stacking position B. Therefore, the reciprocating table 3 on which the container P2 is placed can be moved to the stacking position B without any trouble.

  When the reciprocating table 3 on which the container P2 is placed reaches the stacking position B and stops, the control device 10 moves the container support means 4 and 4 from the second position to the first position as shown in FIG. And descend. When the container support means 4 and 4 are lowered from the second position while supporting the container P1, the lower surface of the container P1 is in contact with the upper surface of the container P2 during the lowering, and at that time, as shown by the broken line in FIG. The upper surfaces of the support members 16 and 16 are separated from the lower surface of the flange portion t of the container P1, and the container P1 is stacked on the container P2. When the container support means 4 and 4 are still lowered, the lower surfaces of the support members 16 and 16 come into contact with the flange t of the container P2, and the support members 16 and 16 rotate upward as described above. The lowering of the support members 4 and 4 is performed without any trouble.

  In FIG. 14, the container support means 4, 4 continue to descend and reach the first position, the control device 10 controls the operation of the lifting motors 12, 12, and the container support means 4, 4 stops stopping. It shows the state that was done. In this state, the support members 16 and 16 have returned to the support position where the upper surfaces thereof are horizontal, and the container support means 4 and 4 are in a state capable of supporting the container P2.

  When the container support means 4, 4 reaches the first position and the lowering stops, the control device 10 next controls the operation of the lifting motors 12, 12 to move the container support means 4, 4 to the first position. Raise toward position 2. FIG. 15 shows a state in which the container support means 4, 4 has reached the second position, the operation of the lifting motors 12, 12 is controlled by a signal from the control device 10, and the container support means 4, 4 is stopped. Is shown. As shown in FIG. 15, it can be seen that the container P1 is stacked on the container P2 supported by the support members 16, 16, and two-stage stacking is performed.

  Thereafter, by repeating the same operation, the containers P can be stacked in a desired number of stages. FIG. 16 shows a state in which the containers P1 to P7 are sequentially stacked and stacked in a total of 7 levels. Control of the number of stages of stacking is performed by counting the number of times that the container support means 4 and 4 are lowered from the second position to the first position and return to the second position, and the number of times is a predetermined stage. When the number of stacked stages becomes the same, it is determined that the stacking is completed. Alternatively, when the height of the container P is known, for example, when the container support means reaches the second position, the entire height of the stacked containers P is detected, and a predetermined number of steps are detected. It may be determined that the stacking has been completed.

  As described above, when the predetermined number of stages have been stacked, the control device 10 controls the operation of the driving device 5 to move the reciprocating platform 3 from the stacking position B to the receiving position A as shown in FIG. Next, the lifting motor 12 is controlled to lower the container support means 4 toward the space C in which the carry-out carriage 19 is accommodated. In the illustrated example, the space portion C that receives the unloading carriage 19 is below the stacking position B. However, since the reciprocating table 3 is retracted from the stacking position B to the receiving position A, the container support means 4 There is no hindrance to descending to the space C. The unloading carriage 19 may be any type as long as the stacked containers P can be placed and unloaded, and at an appropriate time, preferably the stacking / unloading of the present invention. Before the apparatus 1 starts its operation, it may be arranged at a predetermined position in the space C.

  FIG. 18 shows a state where the container support means 4 and 4 are lowered to the position where the containers P1 to P7 supported in the stacked state are placed on the carry-out carriage 19, that is, the third position. The position where the stacked containers P1 to P7 are placed on the unloading carriage 19 is the bottom surface of the stacked container P7 is in contact with the unloading carriage 19 and the stacked containers P1 to P7. Is the position where all of the weight of the container is placed on the carry-out carriage 19, and at this time, the upper surfaces of the support members 16 and 16 of the container support means 4 and 4 are at a position indicated by reference numeral III on the right side in the figure. However, at this position, the upper surfaces of the support members 16 and 16 are not in contact with the lower surface of the flange portion t of the lowermost container P7. In this state, the unloading carriage 19 on which the stacked containers P1 to P7 are placed can be taken out from the stacking / unloading apparatus 1 of the present invention to the outside by human power and transported to an appropriate place. Alternatively, the stacking / unloading device 1 of the present invention is attached with the pushing-out device of the unloading carriage 19 and the container support means 4 and 4 are lowered to the third position, and the stacked containers P1 to P7 are unloaded. When it is placed on the carriage 19, the unloading carriage 19 may be automatically pushed out.

  As described above, the control device 10 controls the operation of the lifting motors 12 and 12 to stop the lowering of the container support means 4 and 4 when the container support means 4 and 4 reach the third position. However, desirably, as shown in FIG. 19, the abutting pieces 17, 17 abut against the abutting members 20, 20, and mechanically via the abutting pieces 17, 17 and the rotating shafts 15, 15. It is preferable to lower the container support means 4, 4 to a position where the support members 16, 16 coupled to are rotated upward to the retracted position. When the support members 16 and 16 rotate upward to the retracted position due to the contact between the contact pieces 17 and 17 and the contact members 20 and 20, the control device 10 controls the operation of the lifting motors 12 and 12. Then, the lowering of the container support means 4 and 4 is stopped.

  Whether or not the support members 16 and 16 have rotated to the retracted position is determined by arranging detection means for detecting the rotation angle or the rotation position of the support members 16 and 16 or the contact pieces 17 and 17. Or the lowering position of the container support means 4 and 4 where the support members 16 and 16 are rotated to the retracted position is obtained in advance, and the container support means 4 and 4 are obtained and placed in advance. You may make it detect that it fell to the position using appropriate position detection means, such as a limit switch. The retreat position may be a position where the support members 16 and 16 are rotated upward until the distance between the tip portions of the support members 16 and 16 facing each other is sufficiently wider than the width of the container P. That's fine.

  As shown in FIG. 19, by rotating the support members 16, 16 to the retracted position, the stacked containers P <b> 1 to P <b> 7 are stacked at the time of taking out or pushing out the carrying cart 19 on which the containers P <b> 1 to P <b> 7 are placed. The risk that the containers P1 to P7 come into contact with the support members 16 and 16 is further reduced, and an advantage is obtained that the carry-out carriage 19 can be taken out or pushed out more smoothly.

  When the operator confirms the removal of the carry-out carriage 19 on which the stacked containers P1 to P7 are placed, or when an extrusion device is provided, the control device 10 confirms the extrusion operation, By controlling the operation of the elevating motors 12 and 12, the container support means 4 and 4 are raised again to the second position, and the next stacking operation is put on standby.

  As described above, according to the stacking / unloading apparatus of the present invention, it is possible to easily stack and unload containers to the outside by repeating simple mechanical operations. In a large-scale rice cooking facility that cooks and ships rice, it not only contributes to labor reduction, but also makes it possible to increase the efficiency of work and has great industrial applicability.

It is a side view which shows an example of the stacking carrying-out apparatus of this invention. It is a side view which shows an example of a reciprocating movement stand. It is a front view which shows an example of the stacking carrying-out apparatus of this invention. It is a plane which shows an example of the stage loading / unloading apparatus of this invention. It is a conceptual diagram which shows the X-X 'cross section of FIG. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention. It is a figure explaining operation | movement of the stage loading / unloading apparatus of this invention.

Explanation of symbols

1 stage loading / unloading device 2 frame 3 reciprocating table 4 container support means 5 drive device 6 wheel 7 rail 8 rotating roller 9 position detecting means 10 control device 11 guide rod 12 lifting motor 13 wire 14 sliding bearing 15 rotating shaft 16 support Member 17 Contact piece 18 Stopper 19 Unloading cart 20 Contact member 31 Sprocket 32 Top chain 33 Electric motor A Reception position B Stacking position C Unloading cart receiving space P Container t

Claims (5)

Between the receiving position and the stacking position in a position spaced horizontally reciprocates, reciprocating table for conveying the containers to be staked from the receiving position to the stacking position and; of the flange portion of the container to be staked A support member having an upper surface that contacts the lower surface and supports the container, wherein the support member is between a support position where the upper surface is horizontal and a retracted position where the upper surface is tilted upward from the horizontal. A support member that is rotatable and returns to a support position by its own weight and / or elastic force when there is no external force ; an elevating device that raises and lowers the support member in a direction perpendicular to the stacking position; A space for receiving a loading cart that is placed and carried outside; a space provided in a lifting path of the support member ; and controls the reciprocating motion of the reciprocating table, and the support member includes at least In the stacking position That a first position in which the container on reciprocating stage may be a support ready, the lower surface of the container lifting supported by the support member, then the upper surface of the container which is conveyed to the stacking position A control device that controls the operation of the lifting device so as to move up and down between a second position that is above and a third position where the stacked containers are placed on the unloading carriage,
(A) moving the reciprocating platform from the receiving position to the stacking position;
(B) When the reciprocating platform is in the stacking position, the support member descends from the second position to the first position, and then rises toward the second position while supporting the container. Operate the lifting device,
(C) moving the reciprocating platform from the stacking position to the receiving position;
The operations (a) to (c) are repeated as many times as the number of steps to be stacked,
(D) operating the lifting device so that the support member supporting the containers of the number of stages to be stacked rises or falls to the third position;
A stacking and unloading device comprising a control device. The stacking / unloading apparatus according to claim 1, wherein the space for receiving the unloading carriage is located below the stacking position in the lifting path of the support member . The stacking / unloading device according to claim 2, wherein the control device controls the operation of the lifting device so that the support member is lowered to the third position when the reciprocating platform is not in the stacking position. . The stage loading / unloading device according to claim 1, wherein at least one pair of the supporting members is provided on the left and right or front and rear in the container conveying direction by the reciprocating table. When the support member is further lowered from the third position, the support member is brought into contact with a part of the support member or a contact piece mechanically coupled to the support member, so that the support member is moved from the support position to the retracted position. The stage loading / unloading device according to claim 1, further comprising a contact member that rotates.

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