JPH08217236A - Method and device for automatic unloading/supplying of sack, sack conveying container, untying device, and tray - Google Patents

Abstract

PURPOSE: To accomplish unmanned operation by automating the processes of unloading sack bundles from a container and supplying them to a filling machine, etc. CONSTITUTION: Each bundle of sacks is taken out of a transport container by an unloading robot 21 and stored in a magazine 27, and they are supplied bundle by bundle from the magazine to a tray transported by a tray conveyor. The facing direction of each bundle is sensed in the tray conveying process, and the tray is rotated 180deg. by a reversal device 29 to generate alignment of bundles. The band of each bundle is cut by an untying device 30, and the sacks are lifted from the tray in the sack takeout position, grasped by a chuck, and taken out, and thus the processes to make supply to a sack supply conveyor are performed automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically unloading and supplying bags such as standing pouches packed in a container at a bag making factory to one or a plurality of filling machines. And a device therefor, and a bag transport container, a debinding device, and a tray used in the device.

[0002]

2. Description of the Related Art For example, a standing pouch filled with a liquid detergent for refilling is generally made of a synthetic resin and has a very slippery surface, which makes it difficult to arrange and difficult to handle. Moreover, when the bag is made, the opening is two and the bottom is four, so when stacked,
There is a problem that the bottom is twice as thick as the other parts, is unstable and easily collapses, and automatic handling is difficult.

Therefore, conventionally, such bags are handled only by hand. In a bag making factory, a predetermined number (for example, 50 bags) of bags discharged from a bag making machine are manually put and put in a vinyl bag. The cardboard boxes are packed in a corrugated cardboard box, and at a filling factory, they are manually unloaded by an operation reverse to the above and supplied to a filling machine.

[0004]

As described above, the handling of bags in the bag making factory and the filling factory has not been automated yet and is carried out only by manpower, which is inefficient and requires a lot of manpower. The production cost is increasing and the automation is required.

The present invention was devised in view of the above-mentioned circumstances, and in particular, a bag stored in a container from a bag manufacturing factory is automatically unloaded from the container at a filling site or the like, and one or a plurality of bags are obtained. Automatic unloading supply method and apparatus as an automatic bag unloading supply system that can be supplied to a filling machine, etc., and a bag transport container, a bunching device, and a bag transport used in the automatic unloading supply system The purpose is to provide a tray of.

[0006]

SUMMARY OF THE INVENTION An automatic bag unloading and supplying method of the present invention which solves the above problems, is a loading step for loading a bundle of bags one by one at a depalletizing position where a bundle of bags is taken out of a container. It has a bundling process that cuts and removes the band of the bag bundle loaded on the tray, and an unpacking process that removes the unbunched bag group from the tray. The bag bundles are loaded one by one on the tray and supplied from the depalletizing position. It is characterized in that it is conveyed to a position and a bag group is supplied. Before the unbunching step, a bag bundle orientation detecting step for detecting the orientation of the bag bundle and an orientation aligning step for rotating the tray 180 ° by the orientation detection signal of the bag bundle to align the orientation of the bag bundle are provided. It is desirable to arrange the bag bundle in one direction and then shift to the unbinding process.

By making the tray circulate between the depalletizing position and the bag feeding position by the tray transfer conveyor, complete automation is possible. In the loading step, the bag bundle may be taken out of the container and directly loaded on the tray. The bag bundle may be taken out of the container, temporarily stored in the bag bundle magazine, and dropped from the bag bundle magazine onto the tray one by one. It may be allowed to.

Further, the bag automatic unloading and supplying apparatus of the present invention for carrying out the method is a tray carrying conveyor for carrying trays, a bag bundle taking-out apparatus for taking out a bag bundle from a container, and a bag carrying device arranged above the tray carrying conveyor. The present invention is characterized by comprising a bundling device for cutting and removing the band of the bunch of bags, and a bag group taking-out device for taking out the bunched bag group from the tray.

The bag-bundle take-out device may directly feed the bag-bundle taken out from the container to the tray, but a bag-bundle magazine is provided above the tray transfer conveyor so that the bag-bundle taken out from the container is once said bag-bundle magazine. It is desirable to supply the bag bundle from the bag bundle magazine to the tray on the tray transfer conveyor. Further, it is desirable to provide a bag bundle orientation detection device for detecting the orientation of the bag bundle and an inversion device for rotating the tray 180 ° by the detection signal to align the orientation of the bag bundle on the upstream side of the unbunching device.

The bag bundle take-out device has a finger member for holding two bag bundles at a time, a grip portion having a suction device for sucking a pad placed on the upper portion of the bag bundle, and an arm for three-dimensionally moving the grip portion. It can be composed of an unloading robot.

On the other hand, the bag group take-out device is a bag take-out conveyor for carrying trays diverted from the tray carrying conveyor to a bag take-out position, and a bottom portion of the tray which is arranged under the bag take-out conveyor and reaches the bag take-out position. A bag group pushing-up device that pushes up the bag group from the bag, and a chuck device that is arranged on the bag take-out conveyor and that grips the bag group pushed up from the tray by the bag group lifting device and conveys it to the bag feeding position. it can.

Then, a bag feeding conveyor is arranged at the bag feeding position, and is inclined to the bottom of the bag group which is gripped by the chuck device of the bag group taking-out device and reaches the bag feeding position on the upstream side of the bag feeding conveyor. By providing the endless delivery belt which pushes the bag group in contact with each other in the state in which the bag group is displaced from the upper part in the transport direction, the bag group can be transferred to the bag supply conveyor satisfactorily.

The unbundling device of the present invention, which is suitable for use in the above-mentioned automatic bag unloading and supplying device, is provided with a cutter and a pressing member which are vertically driven by an actuator on the side of a plate which moves vertically and horizontally. The actuator is connected to the actuator via a spring so as to project downward from the cutter, and a band engaging member having a tapered surface is fixed to the lower end of the plate. It is desirable that the unbunching device be provided with a sensor that detects a band of the article bundle and an article retainer that can be driven up and down so as to retain the article bundle when the band is cut.

The bag transport container of the present invention is a bag transport container that is integrally assembled with a pallet and has a pallet, a lower frame fixed to the pallet, a bottom plate, a side plate, an upper frame, a partition plate, and an upper lid. In addition, the partition plate has a bag deviation preventing crosspiece having a thickness that forms a space into which the grip claws of the bag bundle extracting device can be inserted between adjacent bag bundles of the bag bundles inserted between the partition plates. Is attached.

Further, the tray for carrying a bag bundle of the present invention is
It has a bottom plate and a side plate and is formed with a size such that the upper surface is opened and at least one bag bundle can be stored, the bottom plate is provided with a hole into which the bag bundle pushing member can be inserted, and the side plate is passed by the unraveling head. It is characterized in that recesses are formed to the extent possible.

[0016]

[Function] Since the bag bundles are taken out from the container and then conveyed one by one to the supply conveyor of the filling machine in a state of being stacked on the tray, even if the standing pouches, which easily collapse, can be conveyed in a stacked state without fail. In addition, since the band is cut while the tray is loaded and the directions are aligned for each tray, automatic handling can be performed easily and reliably. Then, the tray transport conveyor automatically circulates the tray between the palletizing position and the bag supplying position, whereby the bag supplying system is fully automated.

At the depalletizing position, the finger member of the unloading robot grips the one-stage two-bundle bundle, and the pad placed on the upper portion is sucked by the suction tool, and the arm is operated in that state to move the bag. By moving to the upper part of the bundle magazine, dropping the bag bundle into the magazine, and putting the pad in a separately provided pad magazine, it is possible to take out the two bag bundles and the pads with one reciprocation of the grip portion. , Efficient. In addition, when the bag bundle is once stored in the bag bundle magazine and then supplied to the tray from the magazine, the bag bundle supply device can be controlled more easily than when directly supplied to the tray by the bag bundle supply device. In addition, the bag bundle can be reliably supplied to the tray.

The bag bundle is sent to the lower position of the unraveling device in a state where it is more surely aligned in the same direction by providing the bag bundle direction detecting device and the reversing device which operates by the signal thereof, and the unraveling device. It is possible to always engage the band engaging member with the band from one direction (that is, the side of the bag opening having a small thickness). Further, according to the unraveling device of the present invention, the bag pressing member presses the upper surface of the bag bundle, and the band engaging member has the tapered surface. It can be lifted from the top and cutting becomes easy. Then, since the band is cut while being held between the band pressing member and the band engaging member,
The band can be surely cut, and the band can be satisfactorily removed from the bag bundle by moving the unraveling head while holding the cut band. At that time, the unraveling device has a sensor for detecting the presence or absence of a band, and an article bundle retainer for pressing the article bundle (bag bundle) when the band is cut and removed. It is possible to prevent the bundle from jumping up and disturbing.

When the bag group is taken out from the tray at the bag feeding position, the bag group is pushed up by the bag group pushing device and then grasped and taken out by the chuck device, so that the chuck device can surely grasp the bag group. . Further, by pushing out the bag group from the upper part in the conveying direction from the chuck device with the delivery belt, it is possible to prevent irregular collapse of the load and to stably convey the bag to the filling position by the supply conveyor.

According to the bag transport container of the present invention,
Since a certain gap is formed between the bag bundles by the bag misalignment prevention bar, the bag bundle can be stored while being held by the hand or the robot hand, and can be stored in a surely aligned state. It is easy to take out. Further, since the bag bundle is regulated by the bag misalignment preventing bars even after storage to prevent the lateral displacement, the stacked state does not become disjoined in the middle. Furthermore, because it is integrated with the pallet,
Easy to handle by forklift.

Further, in the tray of the present invention, the bottom plate is provided with a hole into which the bag bundle push-up member can be inserted, and the side plate is formed with a concave portion through which the debinding head can pass. The band can be easily cut and removed by the unraveling device while it is riding on the bag, and the bag group can be pushed up from the bottom by the bag bundle push-up member, so that it can be easily grasped and taken out by grasping and packing. .

[0022]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, an embodiment of the bag transport container of the present invention used in the automatic bag unloading and supplying apparatus will be described with reference to FIG.
FIG. 2 is an assembly diagram of the bag transport container 1 of this embodiment,
In the figure, 2 is a synthetic resin pallet, 3 is a lower frame fixed to the surface of the pallet, 4 is a bottom plate, 5 and 6 are a pair of side plates, 7 is a side plate vertical reinforcing angle member, 8 is an upper frame, Reference numeral 9 is a partition plate, 10 is a deviation preventing rail fixed to the partition plate, and 11 is an upper lid.

A groove 12 is formed in the bottom plate 4 and the side plate 5 so that the bottom edge and the side edge of the partition plate 9 are fitted to each other.
Can be assembled and assembled. The space between the partition plates is approximately at the height of the bag. The deviation prevention bar 10 provided on the partition plate 9 is made of a square member having an appropriate thickness so as to form a space into which a gripping claw of a robot, which will be described later, can be inserted between adjacent bag bundles. Are provided at intervals corresponding to the width of the.

The bag transport container of this embodiment is composed of the above-mentioned members, and has a lower frame 3 fixed on the pallet 2.
By sequentially assembling the bottom plate 4, the side plates 5, 6, the side plate vertical reinforcing angle members 7, the upper frame 8, and the partition plate 9, the bag transport container 1 integrated with the pallet is obtained.

In this embodiment, one bundle 5 is provided between the deviation prevention bars 10.
Two bundles of zero pouch standing pouches are stacked at the bag mouth and bottom to form a single stage, and a pad formed of a plastic plate or cardboard made of acrylic resin or the like is interposed between the stages.
A total of 360 bundles (18,000 bags) can be stored by stacking 10 bundles of 20 bundles and forming 3 rows of 6 blocks in each row. By interposing the pad between the steps, it is possible to prevent the intermediate portion of the bag bundle from being extremely recessed in an arc shape in the stacked state, and to stack the bag favorably.
When the bag body is stored, the upper lid 11 is attached, and in that state, it is transported to a filling factory or the like. At that time, since the bag transport container of the present invention is integrated with the pallet, it can be easily handled by a forklift or the like.

Next, an embodiment of the automatic bag unloading and supplying device of the present invention will be described in which the bag bundle packed in the container as described above is automatically unloaded and supplied to a filling machine or the like. FIG. 1 shows a layout of the main part. Reference numeral 15 is a first container transport conveyor for transporting a real bag transport container in which bags are packed, 16 is a second container transport conveyor arranged so as to intersect with the first container transport conveyor, and an end portion of the conveyor is provided. An unpacking station A and a depalletizing station B in which a robot (not shown) for removing the upper lid 11 of the container and returning the upper lid to an empty container transported by a fourth container transport conveyor described later is disposed in the vicinity. There is. Also, depalletizing station B
Third container transport conveyor 1 for transporting an empty container after unloading and returning it to the first container transport conveyor 1
The seventh and fourth container transport conveyors 18 are arranged as shown.

Further, the depalletizing station is provided with a gripping portion 19 (FIG. 3) having a finger member for gripping one step, that is, two bundles, and a suction member for sucking the pad, and an arm 20 for three-dimensionally moving the gripping portion. Unloading robot 21
Is arranged. The unloading robot detects the three points of the container that have reached the depalletizing station and confirms the position of the container, whereby the coordinate axes are automatically set and the arm is moved based on a preset program. It is possible to move and take out the bag bundle from the container in sequence.

In the illustrated embodiment, a tray transfer conveyor 25 is arranged in parallel with the second container transfer conveyor 16. The tray transfer conveyor 25 is a conveyor that stores a bundle of bags one by one in a tray and conveys and circulates the bags to a position where the bags are supplied to the filling machine. The downstream side shown in FIG.
It is connected to what is shown enlarged. As shown in FIG. 4, the tray 24 has a bottom plate 13 and side plates 14 and has an upper surface opened so that it can accommodate at least one bag bundle. A hole 22 into which a pushing-up member for pushing up the taken-out bag bundle and taking it out can be inserted, and four positioning holes 22 'for a reversing device described later are formed. Furthermore, the side plate 14 in the lateral direction is formed with a recess 23 through which the unraveling head of the unraveling device can pass.

The tray transfer conveyor 25 circulates and conveys the tray 24, and a bundle of bags 80 is supplied to the tray in the meantime, aligned in one direction, and the band of the bundle of bags is cut and removed, and the position is supplied to the filling machine. The bag group that has been unbundled is taken out from the tray at the supply position, and the empty tray is circulated again to the bag bundle supply position.

In order to perform the above work, the palletizing station B is arranged along the tray transfer conveyor 25.
Put magazine 26, bag bundle magazine 2 in order from the side
7, bag bundle direction detecting device 28, reversing device 29, unbunching device 3
0 is arranged, and the take-out device shown in FIGS. 9 to 11 is arranged on the downstream side. Hereinafter, each of these devices will be described in order.

The pat magazine 26 is for accommodating the pats taken out from the bag transport container, and in this embodiment, as shown in FIG. 5, it can be installed above the tray transfer conveyor in order to save space. So that the leg 5
6 is formed, and is formed in a box shape having an upper opening.
Further, when both side plates 57 and the bottom plate 58 in the longitudinal direction are partially cut off and a certain number of pads are stored in the magazine, the unloading robot can grasp and take out the pads and return them to an empty container. The excision part 59 is formed so that it can be formed.

The bag bundle magazine 27 accommodates a plurality of bag bundles taken out by the robot from the bag transport container, and details thereof are shown in FIG. The bag bundle magazine 27 is arranged so as to straddle the tray transfer conveyor, and a pair of first supports for temporarily receiving the bag bundle supplied by the robot are provided on the opposite side walls at the upper position of the rectangular cylindrical magazine body 31. A member 32 is provided. An aligning member 33 for aligning the bag bundle received by the first supporting member 32 is provided on the other pair of side walls at the position. A pair of second support members 34 that support and hold the bag bundle are provided at positions near the bottom of the magazine body.
Further, a third support member 35 that supports a bundle of bags and drops the bundle of bags on a tray that is transported by a tray transport conveyor is provided at the lower end opening thereof. The first to third support members and the aligning member are each driven by an appropriate actuator such as a solenoid so that the respective members can project into the magazine body. In FIG. 6, reference numeral 36 denotes a stopper for positioning and temporarily stopping the tray when the tray reaches below the bag bundle magazine, and is driven by an appropriate means such as a solenoid.

The bag bundle orientation detecting device 28 utilizes the difference in the thickness of the mouth portion and the bottom portion of the bag bundle to detect the thickness of the bundle of bags carried on the tray one by one, and the bag bundle is detected. It detects the direction of the, and an appropriate distance sensor can be adopted. The reversing device 29 operates according to the output of the bag bundle orientation detecting device 28 to align the bag bundle in one direction, and rotates the tray to the tip of the rotary rod of an appropriate rotary solenoid that rotates the tray by 180 °. It is constructed by fixing a plate. In this embodiment, the positioning hole 2 formed on the bottom plate of the tray 24 for carrying the bag bundle is provided on the top surface of the rotary plate.
When four trays that fit into 2'are provided and the tray whose direction is instructed reaches that position, the tray is lifted and the positioning hole fits into the tray to support the tray, thereby ensuring 180 ° It can be inverted. In this embodiment, in FIG. 1, the trays are conveyed in a direction in which the top and bottom of the bag bundle crosses the tray transport conveyor 25, and the bag bundle is aligned and conveyed so that the right side is the opening and the left side is the bottom. To be done.

The unbundling device 30 is a device for cutting and removing the band 81 that binds the bunch of bags, the details of which are shown in FIGS. 7 and 8. The de-bundling device 30 includes a pedestal 41 movably provided in a lateral direction by a rodless cylinder 38 along a rail 40 arranged above the tray transfer conveyor 25, and a de-bundling head 42 vertically movable. .
The unraveling head 42 is provided with a cutter 46 and a pressing member 47, which are vertically moved by an appropriate actuator 45 such as a cylinder device, on a side portion of a plate 44 having a notch 43 in a lower portion so as to be vertically movable. The pressing member 47 is vertically driven together with the cutter by the actuator 45,
It is supported by an operating rod of the actuator via a spring 48 so as to project below the cutter 46.

The lower end of the plate 44 has a taper surface 49 as shown in the figure, the side edge constitutes a lower blade, and the inner side constitutes a pad for sandwiching the band 81 with the pressing member 47. The joining member 50 is fixed. Further, in this embodiment, in order to facilitate the penetration of the band engaging member between the bag bundle and the band, the lower surface of the band engaging member is a low friction plate 51 such as a Teflon resin plate having a low friction property. Is attached. However, the band engagement member 50 and the low-friction plate 51 do not necessarily have to be configured as separate members, and can be configured integrally with the plate 44. In FIG. 86 (a), a phantom line 52 indicates a sensor for detecting the presence / absence of a band, and 53 indicates a bag retainer driven by a cylinder or the like that holds a bundle of bags when the band is cut and removed.

Next, the state on the downstream side of the tray transfer conveyor will be described with reference to FIGS. The tray transport conveyor of this embodiment is C to feed the bags to the two filling devices.
At the position and the D position, the actual tray is divided and taken out from the tray transfer conveyor, and in FIG. 10, only the take-out device at the C position is shown.

In the illustrated embodiment, the tray transfer conveyor on the downstream side is arranged at a high place on the ceiling of the factory, and the take-out position connects the forward side and the return side of the tray transfer conveyor. An elevator 60 with a tray feeding / discharging conveyor, which is composed of a group of reversible rollers and is vertically movable, is provided. At this position, an elevator 6 with a tray feeding / discharging conveyor is driven from the tray transport conveyor 25 by a pusher or the like not shown.
0, the actual trays are transferred, and in the illustrated embodiment, when two actual trays are transferred onto the elevator with conveyor 60, as shown in FIG. The conveyor-equipped elevator 60 descends and supplies two actual trays to the bag take-out conveyor 62 via the relay conveyor 61 provided at the descending position. The relay conveyor 61 and the bag take-out conveyor 62 are provided so as to be reversible and vertically movable.

Above the position of the bag take-out conveyor 62, there is provided a chuck device 64 consisting of a pair of parallel chucks 65, 65 for sandwiching and taking out the unbunched bag group from the tray, and below the position of the tray. A push-up device 66 having a pair of push-up rods 67 that enter the holes at the bottom and push up the bag group is arranged. Each parallel chuck 65 is shown in FIG.
Further, as shown in FIG. 11, in order to grip the lower part of the bag group pushed up by the push-up device 66, a pair of gripping pieces 68, 68 having a claw at the lower end is provided by a cylinder device 69 so as to be opened and closed. In addition, the parallel chuck 6
5 is supported by a cylinder 63 so as to be movable up and down, and by a rodless cylinder 70 provided above the bag take-out conveyor 62 and a pair of delivery conveyors 71 to a bag supply conveyor 75 to the filling machine. Is movably provided.

As shown in FIG. 11, at the end of each of the delivery conveyors 71, a group of bags supplied on the conveyors is provided so as to be undulated so as to be sequentially shifted forward from the top and delivered in an overlapping state. A delivery belt 72 is provided.
Further, each of the delivery conveyors 71 is provided so as to be movable up and down, and the other end of the delivery conveyor 71 meshes with the end of the bag supply conveyor 75 at the lowered position so that the bag group delivered from the delivery conveyor is relayed to the bag supply conveyor. Has become. In the figure, 73 is a rotary cylinder for rotationally driving the delivery belt.

Next, the operation of the automatic bag disassembling and supplying apparatus of the present embodiment constructed as described above will be explained. When the bag transport container 1 containing the bags is transported to the second container transport conveyor and reaches the unpacking station A, an unillustrated upper lid removing device lowers and lifts the upper lid to remove the upper lid from the container. The top lid removing device is 4th when the top lid is lifted.
The container moves to a position above the container transfer conveyor and stands by, and when an empty container is transferred by the fourth container transfer conveyor, the upper lid is returned onto it. Next, when reaching the depalletizing station B, the unloading robot 21 detects the three points of the reached container and confirms the position of the container, whereby the coordinate axes are automatically set and a preset program is set. Based on the above, the arm moves to start the work of sequentially taking out the bag bundle from the container.

In the operation of taking out the bag bundle from the bag transport container 1, the engaging piece of the gripping portion 19 of the unloading robot 21 grips the bag bundle 80 of one stage and two bundles, and sucks the pad placed on the upper part thereof. The first support member in a state in which the arm 20 is actuated to move above the bag bundle magazine 27 in this state, and only the bag bundle is released to project the bag bundle into the magazine body. The pad 32 is supported, and then the pad is moved to a position above the pad magasin 26 to release the adsorption of the pad and store the pad in the putt magazine 26. In addition, the unloading robot is a bag transport container in which a pat stacked on the pat magasin is gripped by its gripping portion every time a preset number of times of operation is set, that is, every time a predetermined number of pats are accumulated in the pat magazine. I try to put the putt back to 1.

When the bag bundle is supplied to the bag bundle magazine 27,
The aligning member 33 operates to align the bag bundles by hitting both ends of the bag bundle, and then the support piece of the first support member 32 retracts to drop the bag bundle into the magazine body, and the second support member 34 Store on a support piece. Second support member 34
And the third support member 35 provided at the lower end of the magazine body cooperate with each other to drop the bag bundles one by one from the magazine. When an empty tray transported by the tray transport conveyor 25 reaches below the bag bundle magazine,
The stopper 36 operates to stop the tray 24, and the third supporting member operates to drop the bag bundle onto the tray.

Next, the tray in which the bag bundle is stored (hereinafter referred to as an actual tray) is discriminated by the bag bundle orientation detecting device 28 by sensing the thickness of the bag bundle, and the discrimination signal is sent to the downstream side. It is sent to the provided reversing device 29, and when the real tray having the opposite direction arrives, the reversing device 29
Rotates the actual tray 180 ° to align the bag bundle in the same direction.

When the actual trays aligned in the same direction are sent to a position below the unbundling device 30 and stopped, the bag pressing member 5
3 moves down to press the upper surface of the bag bundle, the second actuator 45 and the first actuator 38 operate to lower the unraveling head 42, and the tray with the low friction plate 51 in contact with the upper end of the bag bundle. Move horizontally from the direction perpendicular to the transport direction. As a result, the band engaging member 50 moves to the band 81.
As shown in FIG. 8, the sensor 52
Moves and stops until the position of the band is detected, and the band 81 is engaged with the tapered surface 49 and lifted from the upper surface of the bag bundle. In this state, the pressing member 47 and the cutter 46 simultaneously descend by the operation of the third actuator 39, but the pressing member 47 first reaches the upper surface of the band,
When the spring 48 is compressed, the pressing member 4
7 is kept in a state of sandwiching the band 81 with the band engaging member 50. Further, as the actuator continues to operate, the cutter 46 cuts the band 81 between the cutter 46 and the lower blade formed on the side edge of the band engaging member.

Thereafter, the unraveling head 42 ascends while holding the cut band 81, and moves laterally along the rail 40 to pull out the band 81 from the bag bundle to the side of the unraveling device. Drop it in the band collection duct installed and move it to the collection position. At that time, since the bag retainer 53 is in a state of pressing the bag, the bag does not lift together with the band, and the band can be removed well. Further, in this embodiment, since the low friction plate 51 is provided on the lower surface of the band engaging member 50, the unraveling head 42.
Can smoothly move on the upper surface of the bag and engage with the band 81. Further, when the band is cut, the pressing member 47
Since the band at the cutting end is sandwiched between the band engaging member and the band engaging member, it is possible to surely cut.

The actual tray 24 containing the group of bags in which the band has been removed and unbundled is the elevator 54 shown in FIG.
Tray transport conveyor 25 that is placed on the ceiling via
And is stopped when the bag mouth reaches the position C (FIG. 9) with the bag mouth part in the traveling direction, and is discharged onto the elevator 60 with a tray supply / discharge conveyor by a pusher (not shown). In this embodiment, the two trays are placed on standby until the two actual trays are transferred onto the elevator with tray supply / discharge conveyor 60, and then the elevator with tray supply / discharge conveyor 60 transfers the trays to the relay conveyor 61 as shown in FIG. It descends to the supply position and supplies two actual trays on the relay conveyor 61,
When the supply is completed, the apparatus descends to the empty tray receiving position shown by the phantom line in FIG. 10 and stands by. The two actual trays 24 supplied to the relay tray 61 are transferred to the bag take-out conveyor 62 at a predetermined timing with a predetermined interval.

When the two actual trays reach the predetermined positions, the bag lifting device 66 is operated and the lifting rod 67 is in the open state, as shown in FIG.
The bag group is pushed up from the tray 24 between the gripping pieces 68. Then, the cylinder 69 is actuated, the parallel chuck 65 is closed to grasp and lift the bag group, and the rodless cylinder 70 is actuated, as clearly shown in FIG.
In the drawing, the bag group is moved to the right to position the bag group on the bag feeding conveyor 71. When the bags are transferred, the bag feeding conveyor 7
1, the other end is positioned between the bag supply conveyors 75, and the rotary solenoid 73 is actuated so that the delivery belt 72 swings and rotates to contact the end of the bag group. , The bag group is extruded from the upper part in the conveying direction as shown in the figure. As a result, since the bag groups are displaced and overlapped with each other, they are conveyed to the supply position for the filling machine by the bag supply conveyor 75, so that the bags can be surely supplied one by one.

The empty tray from which the bag group has been taken out on the bag take-out conveyor 62 is also moved downward through the relay conveyor 61 in which the bag take-out conveyer 62 descends and descends to the empty tray discharge position and stands by. The tray 60 is returned to the elevator 60 with the tray supply / discharge conveyor. The elevator with tray feeding / discharging conveyor 60 rises again and is located between the tray transporting conveyors, and the elevator 60 with tray feeding / discharging conveyor rotates counterclockwise in FIG. It is transferred to the conveyor 25 and returned to the initial depalletizing position. By repeating the above, the tray is circulated between the bag bundle receiving position and the take-out position by the tray transfer conveyor 25.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various design changes can be made within the scope of the technical idea thereof. For example, in the above-described embodiment, the bag bundle is stored in a bag bundle magazine and then supplied to a tray, the direction of the bag bundle is detected, and the direction is aligned by an inverting device. It is also possible to detect the direction of the bundle, align the directions, and feed the tray directly. Further, an accumulator may be provided in the middle of the tray transfer conveyor so that the tray can be sent out in response to a request from the next process. Various methods such as a turntable can be considered as the reversing device.

FIG. 12 shows another embodiment of the bag supplying section of the automatic bag unloading and supplying apparatus according to the embodiment of the present invention. In the present embodiment, compared to the embodiment shown in FIG. 11, the chuck device is not provided, and the bag group is directly supplied from the tray to the bag pushing conveyor. That is, in the figure, 90 is a bag take-out conveyor comprising a roller conveyor, 91 is a bag sending conveyor,
Reference numeral 92 is a bag lifting device, and 93 is a transfer device including a rake 94 and a cylinder device 95 for transferring the bag group pushed up from the tray by the bag lifting device to the bag feeding conveyor. Although only one set of the bag delivery conveyor 91, the bag pushing-up device 92, and the transfer device 93 are shown in the figure, two sets are provided in each of the present embodiment as well as the above-described embodiments. The bags can be transferred from the tray at the same time. Further, the start end portion of the bag feeding conveyor 91 may be provided with comb-like notches so that the rake 94 can enter.

In this embodiment, similar to the one shown in FIG. 10, when the bag take-out conveyor 90 conveys the actual tray sent from the tray supply / discharge conveyor to the end position of the bag send-out conveyor 91, it is arranged at that position. The group of bags in the tray is pushed up to the start position of the bag feeding conveyor by the bag pushing-up device 92. In this state, as shown in the figure, the rake 94 of the transfer device 93 scrapes and transfers the bag to the bag delivery conveyor 91, and the bag is delivered to the bag supply conveyor for the filling machine by the bag delivery conveyor. After taking out the bags from the tray 24, the bag taking-out conveyor 90 descends to the position shown by the broken line and returns the empty trays to the tray feeding / discharging conveyor.

[0052]

The present invention has the following special effects. According to the method and apparatus of the present invention, since each bundle is conveyed to the supply conveyor of the filling machine in a state where the trays are stacked on the tray, it is possible to reliably convey the stacked pouches or the like that easily collapse the load in a stacked state, Moreover, since the band is cut while the tray is loaded and the direction is aligned for each tray, it is easy to handle, and it is possible to automate the handling of bags, which was difficult to automate in the past, and to significantly reduce the production cost. . Further, the tray transport conveyor automatically circulates the tray between the palletizing position and the bag feeding position, whereby the bag feeding system is fully automated.

By supplying the bag bundle once to the bag bundle magazine, the bag bundle supply device can be controlled more easily than when the bag bundle supply device directly supplies the tray to the tray, and the bag bundle can be reliably supplied to the tray. Can be supplied. Further, the gripping portion of the unloading robot grips the two-bundle bag bundle and adsorbs the pad, so that it is possible to take out the two bundles of bag and the pad in one reciprocation of the gripping portion, which is efficient. .

In order to take out the bag group from the tray, since the bag pushing-up device pushes up the bag bundle and then the chuck device holds and takes out the bag group, the chuck device can reliably hold the bag group. Further, by pushing the bag group from the upper part in the carrying direction from the chuck device with the sending belt, it is possible to prevent irregular collapse of the load and to stably carry the bag to the filling position by the supply conveyor.

According to the unraveling apparatus of the present invention, the band engaging member surely digs into the lower part of the band, and the band is clamped by the band pressing member and the band engaging member, so that the band is securely cut. In addition, it is possible to remove the band from the bag bundle by moving the unraveling head while holding the cut band.
Further, since the unraveling device has a sensor for detecting the presence or absence of a band, and an article bundle retainer for pressing the article bundle during band cutting removal, malfunction of the unbunching device and jumping or disturbance of the bag bundle during band removal can be prevented. Can be prevented.

According to the bag transport container of the present invention,
Since a certain gap is formed between the bag bundles by the bag misalignment prevention bar, the bag bundle can be stored while being held by the hand or the robot hand, and can be stored in a surely aligned state. It is easy to take out. Further, since the bag bundle is regulated by the bag misalignment preventing bars even after storage to prevent the lateral displacement, the stacked state does not become disjoined in the middle. Furthermore, because it is integrated with the pallet,
Easy to handle by forklift.

Further, in the bag-conveying tray of the present invention, the bottom plate is provided with a hole into which the bag-bundle pushing member can be inserted, and the side plate is formed with a concave portion through which the unraveling head can pass. With the bag bundle on the tray, the band can be easily cut and removed, and can be easily grasped and taken out by grasping and packing.

[Brief description of drawings]

FIG. 1 is a layout view of essential parts of an automatic bag unloading and supplying device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the bag transport container according to the embodiment of the present invention.

FIG. 3 is a schematic view of a depalletizing station of an automatic bag unloading and supplying device according to an embodiment of the present invention.

FIG. 4 is a perspective view of a tray for carrying bags according to an embodiment of the present invention.

FIG. 5 is a perspective view of a putt magazine.

FIG. 6 is a perspective view of a bag bundle magazine of the bag automatic unloading and supplying device according to the embodiment of the present invention.

FIG. 7 is a perspective view of the unraveling device of the automatic bag unloading and supplying device according to the embodiment of the present invention.

FIG. 8A is a front view of relevant parts, and FIG. 8B is a side view of relevant parts.

FIG. 9 is a layout view of a downstream portion of the automatic bag unloading and supplying apparatus according to the embodiment of the present invention.

FIG. 10 is a schematic view of a bag unloading unit of the automatic bag unloading and supplying apparatus according to the embodiment of the present invention.

FIG. 11 is a schematic view of a bag supply unit of the automatic bag unloading and supplying apparatus according to the embodiment of the present invention.

FIG. 12 is a schematic view of a bag supply section of an automatic bag unloading and supplying apparatus according to another embodiment of the present invention.

[Explanation of symbols]

1 Bag Transport Container 2 Pallet 9 Partition Plate 10 Bag Shift Prevention Bar 16 Second Container Transport Conveyor 21 Unloading Robot 24 Tray 25 Tray Transport Conveyor 26 Pat Magazine 27 Bag Bundle Magazine 28 Bag Bundle Orientation Detecting Device 29 Reversing Device 30 Unpacking Device 31 Magazine Main Body 32 First Supporting Member 33 Aligning Member 42 Unraveling Head 44 Plate 46 Cutter 47 Band Holding Member 48 Spring 49 Tapered Surface 50 Band Engaging Member 53 Bag Holding 60 Tray Feeding and Discharging Conveyor 62 Bag Extracting Conveyor 64 Chucking Device 66 Bag Push-up device 71 Bag supply conveyor 72 Delivery belt 80 Bag bundle 81 Band

Claims (14)

[Claims] 1. A stacking step of stacking bag bundles one by one on a tray at a depalletizing position where a bag bundle is taken out of a container, a debunching step of cutting and removing the band of the bag bundle loaded on the tray, and a bundle unpacking from the tray. An automatic bag unloading supply characterized in that it has a bag unloading process for taking out the formed bag group, stacks the bag bundles one by one on a tray, and conveys the bag group from the depalletizing position to the bag supplying position. Method. 2. A bag bundle orientation detecting step of detecting the orientation of the bag bundle before the unbunching step, and an orientation aligning step of aligning the orientation of the bag bundle by rotating the tray 180 ° by the orientation detection signal of the bag bundle. The automatic bag unloading and supplying method according to claim 1, further comprising: 3. The automatic bag unloading and supplying method according to claim 1, wherein the tray circulates between the depalletizing position and the bag supplying position by a tray carrying conveyor. 4. The stacking step comprises storing a bag bundle in the bag bundle magazine from the container and dropping the bag bundle from the bag bundle magazine onto a tray one by one.
The automatic unloading and supply method for the bags described. 5. A tray transfer conveyor for transferring trays,
It comprises a bag bundle taking-out device for taking out a bag bundle from the container, a bundling device for cutting and removing the band of the bag bundle arranged above the tray transfer conveyor, and a bag group taking-out device for taking out a bag group unbunched from the tray. An automatic bag unloading and supplying device characterized by the above. 6. A bag bundle magazine is disposed above the tray transport conveyor, and the bag bundle take-out device supplies the bag bundle taken out from the container to the bag bundle magazine, from the bag bundle magazine to the tray transport conveyor. The automatic bag unloading and supplying apparatus according to claim 5, wherein the bag bundle is supplied to the tray. 7. A bag bundle orientation detecting device for detecting the orientation of the bag bundle on the upstream side of the unbunching device, and the tray is rotated by 180 ° in response to the orientation detection signal of the bag bundle to align the orientation of the bag bundle. 7. The automatic bag unloading and supplying device according to claim 5, which has a reversing device. 8. The bag bundle take-out device includes a grip member having a finger member for gripping two bag bundles at a time and a suction member for sucking a pad placed on the upper part of the bag bundle, and an arm for three-dimensionally moving the grip portion. The automatic bag unloading and supplying apparatus according to claim 5, 6 or 7, which comprises an unloading robot having. 9. The bag group take-out device is a bag take-out conveyor that conveys trays diverted from the tray transfer conveyor to a bag take-out position, and a bottom portion of the tray that is arranged below the bag take-out conveyor and reaches the bag take-out position. 9. The automatic bag unloading device according to claim 5, further comprising: a bag group pushing-up device that pushes up the bag group from the tray, and a chuck device that grips the bag group pushed up from the tray by the bag group pushing-up device and conveys the bag group to a bag feeding position. Supply device. 10. A bag supply conveyor is arranged at the bag supply position, and is inclined to the bottom of the bag group which is gripped by the chuck device of the bag group take-out device and reaches the bag supply position on the upstream side of the bag supply conveyor. 10. The automatic bag unloading and supplying apparatus according to claim 9, further comprising: an endless delivery belt that pushes the bags in contact with each other in a state in which the bags are sequentially shifted from the top in the transport direction. 11. A debinding device for cutting and removing a band of a banded article bundle, which comprises a cutter and a pressing member which are vertically driven by an actuator on the side of a plate which moves vertically and horizontally. The pressing member is connected to the actuator via a spring so as to project below the cutter, and a band engaging member having a tapered surface is fixed to the lower end of the plate. Characterizing debinding device. 12. A sensor for detecting a band of a bundle of articles,
The unbundling device according to claim 11, further comprising an article retainer that is vertically movable so as to retain the article bundle when the band is cut. 13. A bag transport container having a pallet, a lower frame fixed on the pallet, a bottom plate, a side plate, an upper frame, a partition plate, and an upper lid, which is integrally assembled with the pallet, wherein the partition plate is provided. Is attached with a bag slip prevention crosspiece having a thickness that forms a space into which the grip claws of the bag bundle extracting device can be inserted between adjacent bag bundles of the bag bundles inserted between the partition plates. Characteristic bag transport container. 14. A bottom plate and a side plate are formed, and an upper surface thereof is opened to form a size capable of accommodating at least one bag bundle, the bottom plate is provided with a hole into which a bag bundle pushing member can be inserted, and the side plate is provided. A tray for carrying a bag bundle, characterized in that a recess is formed so that the unraveling head can pass therethrough.