JP7240278B2 - Accumulator - Google Patents

Description

The present invention relates to integrated devices.

Patent Documents 1 and 2 disclose a method of arranging flat bags. Japanese Patent Laid-Open No. 2002-100002 discloses a technique of separating bag bodies discharged from a bag making machine or the like one by one and stacking them in the vertical direction. Further, in Patent Document 2, when a bag conveyed on a conveyor is transferred to another conveyor (accumulation conveyor), each time it is transferred, it is intermittently moved by a distance shorter than the length of the bag, and the accumulation conveyor A technique is disclosed in which bags are stacked so as to partially overlap each other, and when a predetermined number of bags is reached, the next bag is intermittently moved by a distance that does not overlap.

Japanese Patent No. 6492359 JP-A-10-17134

By the way, in recent years, bags with zippers are often used, and it is desired to transport them in a stacked state. However, since the zipper-equipped bag has a protruding portion where the zipper is provided, if the bags are stacked as they are, the protruding portion will overlap and the stacking will be unstable. Therefore, when an external force is applied, it may easily collapse. However, the techniques of Patent Literatures 1 and 2 described above do not support such stacking of zippered bags. SUMMARY OF THE INVENTION It is an object of the present invention to provide a stacking device capable of stacking even zippered bags.

The present invention is a stacking device for stacking flat-shaped bags having a take-out portion with a zipper at one end, comprising a first conveying means for conveying a plurality of said bags at intervals. a transferring means for transferring the bags on the first conveying means by sucking the bags by means of a suction means; and a second conveying means for conveying the bags, wherein the transfer means prevents the zippers of adjacent bags from overlapping when stacking a plurality of the bags on the second conveying means. Secondly, adjacent bags are stacked on the second conveying means while being shifted in a direction substantially perpendicular to the direction in which the zipper extends, thereby forming a laminate containing a predetermined number of the bags. It is

The stacking apparatus according to the present invention is configured such that the zippered bags transported by the first transport means are sucked by the transfer means and sequentially stacked on the second transport means. At this time, the transfer means shifts the adjacent bag bodies in a direction substantially perpendicular to the direction in which the zippers extend so that the zippers of the adjacent bag bodies do not overlap each other, and stacks them to form a laminate. is configured to As a result, since a plurality of bags are stacked so that the zippers do not overlap, the stacked bags can be prevented from collapsing. Therefore, according to the stacking apparatus of the present invention, even zippered bags can be stably and automatically stacked, thereby improving productivity. In addition, in the first conveying means, "conveying at intervals" means that a plurality of bags are conveyed so as not to overlap each other, and the interval between adjacent bags may be zero. Also, the interval between the bags can be determined as appropriate, for example, by matching it to a device or the like upstream of the first conveying means.

In the above-described stacking device, the transfer means may be configured to stack at least one other stack on the one stack after forming one of the stacks.

According to this configuration, a plurality of laminates in which bags are stacked are stacked. Therefore, a large number of bags can be compactly transported.

The stacking apparatus may further include a camera for photographing the bag conveyed by the first conveying means from above, and using the photographed image of the bag conveyed by the camera, the bag may be is calculated, and the suction position of the bag body by the suction means can be controlled.

According to this configuration, for example, when the bag is conveyed on the first conveying means at a position deviated from the designed position, the photographed image taken by the camera is used to calculate the suction position of the bag, and the position of the bag is calculated. It controls the adsorption position of the body. Therefore, for example, even if the position of the bag body is shifted on the first conveying means, the bag body can be sucked in an appropriate direction. Therefore, the bags can be stacked in an appropriate direction in the second transport unit. Therefore, a stable stack can be formed without overlapping the zippers of adjacent bag bodies.

The stacking apparatus may further include position detection means for calculating the position of the bag transported by the first transport means, and the camera detects the position of the bag transported by the first transport means. a plurality of suction positions of the bags by using the photographed image of each of the bags photographed by the camera and the position information of each of the bags detected by the position detecting means; can be calculated to control the suction positions of the plurality of bags by the suction means. A plurality of bags may be photographed by a camera at once, or may be photographed one by one. This point can also be applied to multiple bags as follows.

In the stacking device, the image of the two bags photographed by the camera and the positional information of the two bags detected by the position detection means are used to determine the position of the two bags. The suction position can be calculated, and the transfer means can be configured to suck one of the two bags before sucking the other bag.

In the stacking apparatus, the second conveying means includes an intermediate placement section on which the bags transferred by the transfer means are placed to form at least a part of the stacked body, and the intermediate placement section. a conveying section arranged below the placing section for stacking the laminate and conveying the laminate, wherein the transfer means is one of the intermediate placing section and the conveying section; and selectively stacking the bag bodies, and after the stacked body formed on the transport section is transported from below the intermediate placement section, the intermediate placement is performed by the transfer means. The bag body formed on the unit can be configured to be dropped onto the conveying unit.

According to this configuration, the following effects can be obtained. In the second conveying means, the stacking and conveying of the bags are repeated, and when a predetermined number of bags are laminated to form a laminate, the laminate is conveyed. Therefore, if the stacking of bags to form the next stack starts before the stack is completely conveyed from the position where the bags are to be stacked, the bags will be placed on top of the stack being transported. There is a risk of stacking. In particular, when the bags are continuously conveyed from the first conveying means, the bags are continuously conveyed from the first conveying means by the transfer means even while the stack is being moved on the second conveying means. Since it is transferred, the above problems become conspicuous.

Therefore, when configured as described above, the transfer means once stacks the bags on the intermediate placement section. Then, when the stacked body is conveyed from the conveying section located below and the bag body is not placed under the intermediate placing section, the bag body is dropped from the intermediate placing section to the conveying section. . When the number of dropped bags does not reach the number constituting the stack, the bags are stacked continuously by the transfer means. Then, when a stack is formed in which a predetermined number of stacked bags are formed, the stack is transported by the transport unit. On the other hand, when the number of dropped bags has reached a predetermined number and constitutes a stacked body, the stacked body is transported by the transport section after the dropping.

In the stacking device, the intermediate placement section may include a support section for supporting the stacked bags, and the support section may move in a direction orthogonal to a direction in which the plurality of bags are displaced. , the bag body can be dropped onto the conveying unit.

According to this configuration, since the direction in which the plurality of bags are displaced is orthogonal to the direction in which the supporting portion moves, it is possible to prevent the displacement of the plurality of bags from being disturbed due to the movement of the supporting portion. Therefore, when the plurality of bags fall due to the movement of the support portion, the state in which the plurality of bags are shifted and stacked can be maintained.

According to the stacking apparatus of the present invention, even bags with zippers can be stacked.

1 is a plan view showing an example of a zippered bag body to which the present invention is applied; FIG. 2 is a side view of FIG. 1; FIG. 1 is a plan view of an integrated device according to a first embodiment of the present invention; FIG. FIG. 3 is a side view of FIG. 2; It is a bottom view of the support part of the transfer unit. FIG. 10 is a plan view for explaining suction of the bag body by the transfer unit; FIG. 10 is a plan view for explaining suction of the bag body by the transfer unit; FIG. 10 is a plan view for explaining transfer of the bag body by the transfer unit; FIG. 5 is a side view for explaining stacking of bags by the transfer unit; FIG. 11 is a plan view for explaining the transportation of the bag body in the second transportation unit; FIG. 10 is a plan view of a second transport unit according to the second embodiment of the present invention; FIG. 11 is a cross-sectional view of FIG. 10; FIG. 11 is a cross-sectional view of FIG. 10; 11 is a plan view for explaining the operation of the second transport unit of FIG. 10; FIG. 11 is a plan view for explaining the operation of the second transport unit of FIG. 10; FIG. FIG. 11 is a cross-sectional view for explaining the operation of the second transport unit of FIG. 10; FIG. 4 is a side view showing another example of lamination of bags. FIG. 4 is a side view showing another example of lamination of bags.

<A. First Embodiment>
A first embodiment of an integrated device according to the present invention will be described below with reference to the drawings. The stacking device according to the present embodiment is a device for forming a layered body by layering zipper-equipped bags and conveying the layered body. In the following, first, the bag will be described, and then the stacking device will be described.

<1. Bag>
1A is a plan view of the bag, and FIG. 1B is a side view of the bag. As shown in FIGS. 1A and 1B, the bag 1 is made of two sheets of resin or the like. More specifically, the peripheral edge of each sheet material has a pair of side edges 11 forming long sides, and a first edge 12 and a second edge 13 forming short sides, It is formed in a rectangular shape as a whole. The bag body 1 is formed by heat-sealing the both side edge portions 11 and the first edge portions 12 of the two sheet materials. A first edge portion 12 of the bag body 1 constitutes an extraction portion when the product is finished. Therefore, cutouts 18 are formed in both side edges 11 at positions close to the first edge 12, and a cutout line 14 connecting these cutouts 18 is cut to provide an opening for taking out the contents. is formed.

A zipper 15 is attached to the inner edge of this opening, that is, inside the perforation line 14 . The zipper 15 is composed of a convex strip extending along the first edge 12 on the inner surface of one sheet material and a concave strip extending along the first edge 12 on the inner surface of the other sheet material. . These ridges and grooves are made of an elastically deformable resin material, and are configured so that the ridges and grooves can be detachably fitted. Thus, even after the first edge portion 12 is cut off, the opening can be opened and closed by attaching and detaching the protrusion and the recess.

On the other hand, since the second edge portion 13 is not fused, an opening is formed. Contents are introduced through this opening, and after the contents are introduced, the second edge portion 13 is closed by heat sealing. In this way, the bag 1 becomes a product containing the contents.

The surface of the bag body 1 formed as described above has raised parts where the zippers 15 are arranged. There is a problem that lamination is collapsed and lamination cannot be stably performed. Therefore, in the stacking apparatus according to this embodiment, as will be described later, a plurality of bags 1 are stacked such that the zippers 15 are shifted.

<2. Accumulator>
Next, the integrated device will be described. 2 is a plan view of the integrated device, and FIG. 3 is a side view of FIG. The stacking apparatus according to the present embodiment includes a first transport unit 2 that transports a plurality of bags, a transfer unit 4 that transfers the bag 1 of the first transport unit 2, and a transfer unit 4 that transfers the bag. A second conveying unit 3 is provided for conveying a plurality of bags 1 after they have been stacked. Each unit will be described in detail below.

<2-1. First Conveying Unit>
The first conveying unit 2 has a known conveyor 21 that sequentially conveys a plurality of bags 1 at intervals. On the conveyor 21, each bag 1 is arranged such that the zipper 15 extends parallel to the conveying direction, and the first edge 12 on which the zipper 15 is arranged faces the right side in the conveying direction. .

<2-2. Transfer unit>
Adjacent to the first transport unit 2 is a second transport unit 3 having two rows of conveyors 31 and 32 . The transfer unit 4 picks up two bags 1 from the first transport unit 2 and transfers them to the conveyors 31 and 32 of the second transport unit 3 . Specifically, as shown in FIG. 3, the transfer unit 4 includes a support section 41 to which the two bags 1 are attracted, a parallel link robot 42 that moves and rotates the support section 41, and a camera. 43 and a control unit (not shown). The support portion 41 includes a rectangular support body 411 and four suction portions 412 and 413 provided on the lower surface of the support body 411 , and the upper surface of the support body 411 is connected to the parallel link robot 42 . It is The control unit can be composed of a known computer such as a PLC (Programmable Logic Controller), and mainly controls the parallel link robot 42 for turning ON/OFF the adsorption units 412 and 413 and for moving the support body 411. conduct.

FIG. 4 is a bottom view of the support body. As shown in FIG. 4, two suction units 412 arranged in the short side direction are provided at one end (the left side in FIG. 4) of the lower surface of the support body 411 in the long side direction. One bag 1 is supported by the portion 412 . On the other hand, on the other end of the lower surface of the support body 411 in the long side direction (on the right side in FIG. 4), two suction portions 413 are arranged in the short side direction. One bag 1 is supported. Hereinafter, the two suction portions for sucking one bag body 1 on one end side of the support body 411 are collectively referred to as a first suction portion 412, and another bag on the other end side of the support body 411. Suppose that two adsorption|suction parts which adsorb|suck the body 1 are collectively called the 2nd adsorption|suction part 413. As shown in FIG. Also, the first adsorption portion 412 and the second adsorption portion 413 are provided with elevating units (not shown) such as air cylinders, and can be raised and lowered separately with respect to the support body 411 .

In the initial state, the support body 411 is arranged such that the long side extends parallel to the conveying direction of the first conveying unit 2, and the first suction unit 412 picks up the bag on the downstream side (hereinafter referred to as the first bag 1A). ), and the second suction portion 413 sucks the bag on the upstream side (hereinafter referred to as the second bag 1B).

Air is sucked by a compressor (not shown) in each of the sucking portions 412 and 413, and the bag body 1 is sucked by this.

The parallel link robot 42 is supported by brackets (not shown) above the first and second transfer units 2 and 3, and a plurality of downwardly extending links are connected to the support body 411. As shown in FIG. For the parallel link robot 42 , for example, a known one having four or more axes can be used, which can move the support section 41 three-dimensionally and also rotate the support section 41 .

The above-described camera 43 is arranged above the first conveying unit 2, and the camera 43 photographs the bag body 1 conveyed on the conveyor 21. As shown in FIG. The camera 43 takes an image of the bag 1 in the vicinity of the position where the bag 1 is sucked or on the upstream side thereof, and acquires the inclination of the bag 1 from the photographed image. Further, the first transport unit 2 is provided with an encoder (position detection means), which detects the position of the bag body 1 in the transport direction. Then, the control unit of the transfer unit 4 controls the position and orientation of the support body 411 when sucking the bag 1 according to the obtained inclination of the bag 1 and the position in the transport direction, and the parallel link robot 42 controls the position and orientation of the support body 411 when the bag 1 is sucked. controlled by For example, as shown in FIG. 5, when the two bags 1 match the designed position, the support body 411 moves as it is (the long side is parallel to the conveying direction), and the two bags Adsorb body 1 at the same time.

On the other hand, for example, when the bag 1 is tilted as shown in FIG. 6, this is detected from the photographed image, and the adsorption position of the bag 1 is controlled as follows. First, the support body is rotated counterclockwise in accordance with the first bag body 1A on the downstream side (operation (1) in FIG. 6), and the lifting unit lowers the first adsorption portion 412 from the support body 411, One bag 1A is sucked. At this time, the second adsorption portion 413 is in the raised position by the lifting unit and stands by above the second bag body 1B. Subsequently, the first suction part 412 is slightly lifted while the first bag body 1A is being sucked, and after rotating the support body 411 clockwise in accordance with the second bag body 1B on the upstream side (Fig. 6 operation (2)), the lifting unit lowers the second suction portion 413 to suck the second bag body 1B. At this time, the first suction unit 412 is in the raised position by the lifting unit and is waiting upward. Thus, the two bags 1A and 1B are sucked. Thereafter, as shown in FIG. 7, the parallel link robot 42 moves the two bags 1A and 1B to the first conveyor 31 and the second conveyor 31 of the second transport unit 3 while rotating the support body 411 clockwise by 90 degrees. Transfer onto the conveyor 32 .

In order to perform the above-described control, the controller determines the current state of the bag 1 being conveyed based on the inclination of the bag 1 obtained from the photographed image and the positional information of the bag 1 in the conveying direction obtained from the encoder. Calculate the suction position of Then, the support body 411 is moved toward this suction position while changing the angle. However, the calculation of the inclination of the bag 1 and the position in the conveying direction is not limited to this method. Well, not particularly limited.

<2-3. Second Conveying Unit>
As mentioned above, the second transport unit 3 has two conveyors, a first conveyor 31 and a second conveyor 32 . As shown in FIG. 2, the first conveyor 31 is arranged on the side closer to the first transport unit 2 and the second conveyor 32 is arranged on the far side. They extend in parallel and have the same conveying direction. Since the first and second conveyors 31 and 32 have the same configuration, only the first conveyor will be described below.

The first conveyor 31 is a known conveyor and is configured to move intermittently. That is, when the bags 1 are stacked on the first conveyor 31 by the transfer unit 4, the first conveyor 31 is stopped. The moved and stacked bag bodies 1 are conveyed downstream.

<3. Operation of Integrating Device>
Next, the operation of the integrated device configured as described above will be described. As described above, the bags 1 on the first transport unit 2 are sucked two by two by the transfer unit 4 and stacked on the second transport unit 3 . At this time, each bag 1 is rotated by 90° and placed on the first and second conveyors 31 and 32, respectively. That is, the zippers 15 of each bag body 1 are arranged so as to face the upstream side and the extending direction of the zippers 15 faces the width direction. By repeating this, the bags 1 are stacked on the conveyors 31 and 32. At this time, as shown in FIG. It's piling up. That is, the upper and lower bag bodies 1 that are stacked are aligned in the width direction, but the zipper 15 of the upper bag body 1 is arranged at a position that does not overlap the zipper 15 of the lower bag body 1. go.

In order to carry out such stacking, the support body 411 of the transfer unit 4, when the bag 1 is placed on the conveyors 31 and 32, turns off the first suction section 412 to place the bag 1 on the first suction section. Disengage from 412. Following this, the support body 411 returns to the first transport unit 2 and sucks the two bags 1, and then moves onto the second transport unit 3 to stack the bags 1 thereon. At this time, after the support body 411 is moved slightly downstream of the already stacked bag bodies 1, the bag body 1 is arranged on the lower bag body 1, and the adsorption section 412 is turned off. By repeating the above operation, a plurality of bags 1 are piled up while shifting toward the downstream side. The positions at which the bags 1 are placed on the conveyors 31 and 32 (lower positions of the bags 1) are fixed, and the stacked stacks 10 are moved by driving the conveyors 31 and 32 so that the zippers 15 do not overlap. By repeating the downstream movement, a plurality of bags 1 can be stacked while being staggered downstream. If the zippers 15 are stacked so that they do not overlap, the layered body 10 tends to collapse due to acceleration or deceleration during transportation, and if the speed is increased, there is a problem that stable stacking cannot be performed.

When a predetermined number of bags 1 are stacked, the conveyors 31 and 32 move. A predetermined number of stacked bag bodies 1 are hereinafter referred to as a stack 10 . That is, each conveyor 31, 32 moves downstream each time the laminate 10 is formed. Then, as shown in FIG. 9, the conveyors 31 and 32 are stopped when the stacking space S for placing the next stack 10 is formed on the upstream side of the stack 10 . Therefore, the conveyors 31 and 32 are intermittently driven such that the conveyors 31 and 32 are stopped until the laminate 10 is formed and then moved by a predetermined distance.

<4. Features>
(1) In this stacking apparatus, the zippered bags 1 transported by the first transport unit 2 are sucked by the transfer unit 4 and stacked on the second transport unit 3 in order. At this time, the transfer unit 4 shifts the adjacent bag bodies 1 in a direction orthogonal to the direction in which the zippers 15 extend, that is, in the conveying direction, so that the zippers 15 of the bag bodies 1 adjacent in the vertical direction do not overlap. It is configured to be stacked to form a laminate 10 . As a result, a plurality of bags 1 are stacked so that the zippers 15 do not overlap, so that the stacked bags 1 can be prevented from collapsing. Therefore, the zippered bags 1 can be stably and automatically stacked, and productivity can be improved.

(2) When the bag 1 is conveyed on the first conveying unit 2 with deviation from the designed position, the inclination of the bag 1 is obtained from the photographed image taken by the camera 43, and the inclination of the bag 1 is detected by the encoder. , and based on this current position information, the suction positions of the bag 1 by the suction units 412 and 413 are controlled. Therefore, for example, even if the bag 1 is misaligned on the first transport unit 2, the bags can be stacked in the appropriate direction in the second transport unit 3 based on the current position information. . Therefore, the zippers 15 of the adjacent bags 1 do not overlap, and a stable stack 10 can be formed. It should be noted that the current location information acquisition method and acquisition device are not particularly limited.

<B. Second Embodiment>
Next, a second embodiment of the integrated device according to the present invention will be described with reference to the drawings. The difference between the stacking apparatus according to the second embodiment and the first embodiment is the configuration of the second transport unit.

<1. Configuration of Second Transport Unit>
As described above, the conveyors 31 and 32 of the second transport unit 3 repeatedly stack and transport the bags 1 . That is, when a predetermined number of bag bodies 1 are laminated to form a laminated body 10, the laminated body 10 is conveyed. Therefore, the next layered body 10 cannot be formed before the layered body 10 is completely transported from the stacking space S where the bags 1 are to be layered. However, when the bags 1 are continuously conveyed from the first conveying unit 2, the bags 1 are not conveyed from the first conveying unit 2 even while the stack 10 is being moved on the conveyors 31 and 32. Since it is continuously transferred, it is necessary to reduce the transport speed of the first transport unit 2 or move the stack on the conveyors 31 and 32 of the second transport unit 3 at high speed. , the laminate 10 cannot be formed continuously. However, if the conveying speed of the first conveying unit 2 is reduced, it is necessary to further reduce the speed of the bag making machine on the upstream side, which is not realistic. In addition, since the surface of the bag 1 is protruded at the portion where the zipper 15 is arranged, the layered body tends to collapse when the layered body 10 is moved at high speed.

On the other hand, in the second embodiment, the conveyors 31 and 32 of the second conveying unit 3 are provided with the intermediate placement section 5, so that the stack 10 can be conveyed without lowering the conveying speed of the first conveying unit 2. to form The intermediate placement section will be described in detail below. Since the first conveyor 31 and the second conveyor 32 are provided with the intermediate placement section 5 having substantially the same configuration, the intermediate placement section 5 provided on the first conveyor 31 will be described below.

10 is a plan view of an intermediate placement section provided on the first conveyor 31, and FIG. 11 is a sectional view of FIG. As shown in FIGS. 10 and 11, the intermediate placement section 5 includes a first side plate 51 and a second side plate 52 arranged on both sides of the first conveyor 31 in the width direction. The first side plate 51 is the side plate closer to the first transport unit 2 , and the second side plate 52 is the side plate farther from the first transport unit 2 . That is, the second side plate 52 is adjacent to the second conveyor 32 . The space between the side plates 51 and 52 is hereinafter referred to as a transfer space.

Both side plates 51 and 52 stand upright so as to extend in the vertical direction, and the first side plate 51 is formed with a plurality of through holes arranged in the conveying direction above the first conveyor 31 . A rod-shaped support member 53 is inserted through the through-hole, and can advance and retreat in the horizontal direction toward the transfer space. That is, as shown in FIG. 11A, the support member 53 is at a first position protruding so as to traverse the transport space in the width direction, and as shown in FIG. and a second position located at . In each supporting member 53, the outer end of the first side plate 51 is connected by a connecting member 54 extending in the conveying direction. A member 53 advances and retreats.

When the plurality of support members 53 are at the first position, the support members 53 cross the conveying space in the width direction and are arranged in parallel along the conveying direction. do. That is, when the support members 53 are at the first position, the bags 1 to be transferred by the transfer unit 4 are arranged on these support members 53 . On the other hand, when the support member 53 is at the second position, the bag 1 transported by the transfer unit 4 is arranged on the first conveyor 31 .

Further, when the bags 1 are stacked on the support member 53 at the first position, when the support member 53 is retracted to the second position, the stacked bags 1 fall and are placed on the first conveyor 31. It is designed to be placed.

The intermediate placement section 5 as described above is also provided on the second conveyor 32 . However, in the intermediate placement section 5 provided on the second conveyor 32 , a through hole is formed in the second side plate 52 so that the support member 53 moves forward and backward from the second side plate 52 . Other configurations are the same as those of the intermediate placement section 5 of the first conveyor 31 .

<2. Operation of Integrating Device>
Next, the stacking of the bags 1 using the intermediate placement section 5 on the first conveyor 31 will be described. When the bags 1 are transferred from the first transport unit 2, the stack 10 after stacking a predetermined number of bags 1 moves downstream from the stacking position, and the first conveyor 31 stops. If so, the bags 1 are stacked in the same manner as in the first embodiment. On the other hand, while the stack 10 after stacking the predetermined number of bags 1 is moving downstream, the stacking of the bags 1 cannot be performed. once stacks the bags 1 on the support member 53 of the intermediate placement section 5 . That is, the support member 53 is moved to the first position, and the bags 1 are stacked while being shifted downstream in the same manner as when the bags 1 are stacked on the first conveyor 31 .

When the stack 10 is transported downstream and completely stopped on the first conveyor 31, that is, when the stacking space S is formed below the support member 53, the support member 53 is retracted to the second position. 13 and 14, the bag body 1 is dropped onto the first conveyor 31. As shown in FIGS. When the number of dropped bags 1 does not reach the number constituting the stack 10 , the transfer unit 4 continues to stack the bags 1 on the first conveyor 31 . When the number of laminated bag bodies 1 reaches a predetermined number and the laminated body 10 is formed, the first conveyor 31 is moved to convey the laminated body 10 downstream. On the other hand, when the number of dropped bags 1 reaches a predetermined number and the laminated body 10 is formed, the laminated body 10 is conveyed by the first conveyor 31 after dropping. The operation as described above is also performed in the second conveyor 32 .

<3. Features>
As described above, according to the present embodiment, when the stack 10 is being moved by the conveyors 31 and 32, the bags 1 are stacked on the support member 53 of the intermediate placement section 5 and placed on the conveyors 31. When the movement of the stack 10 is completed, the bags 1 on the support member 53 are dropped onto the conveyors 31 and 32 to continue stacking. As a result, even if the bags 1 are continuously transferred from the first conveying unit 2 while the stack 10 is moving, the bags 1 can be continuously transferred without stopping the stacking operation of the bags 1. can be loaded. Therefore, the efficiency of forming and transporting the laminate 10 can be improved. In the intermediate placement section 5, the structure for dropping the stacked bags 1 onto the conveyors 31 and 32 is not particularly limited, and modes other than those described above are also possible.

<C. Variation>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

<1>
In the above-described embodiment, the bags 1 are stacked on the second conveying unit 3 so that the zippers 15 face the upstream side, but they may be stacked so that the zippers 15 face the downstream side. Alternatively, a plurality of laminates 10 may be stacked and then transported. For example, multiple laminations 10 can be stacked such that zippers 15 face the same direction (upstream or downstream) as shown in FIG. 15A, or multiple laminations 10 can be stacked as shown in FIG. 15B. They can also be stacked with the zippers 15 pointing in different directions. Furthermore, the orientation of the zippers 15 of the plurality of laminates 10, the direction of stacking the laminates 10 (the direction of misalignment), etc. may be appropriately determined according to the post-process and the pre-process, and are limited to the above-described embodiment. not.

<2>
In the above embodiment, the second conveying unit 3 is provided with two conveyors 31 and 32, and the transfer unit 4 transfers two bags 1 from the first conveying unit 2 at a time. is not particularly limited. That is, the number of bags to be transferred from the first transport unit 2 at one time is not particularly limited, and may be one or three or more. do it. Also, the number of conveyors in the first transport unit 2 may be two or more.

<3>
In the above embodiment, the transfer unit 4 uses the parallel link robot 42 to transfer the bag 1, but the mechanism for transferring the bag 1 is not particularly limited, and other mechanisms may be used. . Further, in the above-described embodiment, the bag 1 is rotated by 90° when the bag 1 is transferred from the first transport unit 2 to the second transport unit 3, but the present invention is not limited to this. For example, the bag body 1 may be transferred without being rotated, or may be transferred by rotating it at an angle other than 90°.

<4>
The bag body 1 is formed in a flat shape, and the zipper 15 is provided at one end, and the configuration such as the shape is not particularly limited.

1 bag body 2 first transport unit (first transport means)
3 Second transport unit (second transport means)
31 first conveyor (conveyor)
32 second conveyor (conveyor)
4 transfer unit (transfer means)
5 Intermediate placing portion 53 Supporting member (supporting portion)

Claims (7)

A accumulating device for accumulating flat bags having a take-out portion with a zipper at one end, comprising:
a first conveying means for conveying the plurality of bags at intervals;
a transferring means for transferring the bag body on the first conveying means by adsorbing it with an adsorbing means;
a second conveying means for sequentially stacking the bags transferred by the transfer means and conveying the plurality of stacked bags;
with
The transfer means arranges adjacent zippers in a direction substantially perpendicular to the direction in which the zippers extend so that the zippers of the adjacent bags do not overlap when the plurality of bags are stacked on the second conveying means. A stacking device configured to stack the bags on the second conveying means while shifting the bags to form a stack containing a predetermined number of the bags. 2. The integrated device according to claim 1, wherein said transfer means is configured to stack at least one other said stacked body on said one stacked body after forming one said stacked body. further comprising a camera for photographing the bag conveyed by the first conveying means from above,
calculating the suction position of the bag using the photographed image of the bag photographed by the camera;
3. The stacking device according to claim 1, wherein said suction means controls a suction position of said bag body. Further comprising position detection means for calculating the position of the bag transported by the first transport means,
The camera is configured to photograph the bag conveyed by the first conveying means,
calculating suction positions of a plurality of bags by using the photographed image of each of the bags photographed by the camera and each position information of the bags detected by the position detection means;
4. The stacking device according to claim 3, configured to control positions of the plurality of bags that are sucked by said sucking means. Using the photographed images of the two bags photographed by the camera and the positional information of the two bags detected by the position detecting means, the suction positions of the two bags are calculated. ,
The transfer means is
5. The stacking device according to claim 4, wherein one of the two bags is sucked and then the other bag is sucked. The second conveying means is
an intermediate placement section on which the bag body transferred by the transfer means is placed and at least part of the laminated body is formed;
a conveying unit disposed below the intermediate placement unit, for forming the laminate and conveying the laminate;
with
The transfer means is configured to selectively stack the bags on one of the intermediate placement section and the transport section,
After the layered body formed on the conveying section is conveyed from below the intermediate placement section, the transfer means drops the bag body formed on the intermediate placement section onto the conveying section. 6. An integrated device as claimed in any one of claims 1 to 5, configured to: The intermediate placement section includes a support section that supports the stacked bag bodies,
7. The stacking device according to claim 6, wherein said support section is configured to drop said bag bodies onto said conveying section by moving in a direction orthogonal to a direction in which said plurality of bag bodies are displaced.

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