JP2020026345A - Transport device - Google Patents

Abstract

To provide a transport device that is capable of transporting with all the directions of stacked bags aligned even when differently directed packing bags are included.SOLUTION: A transport device A that takes out an uppermost positioned packing bag 10b from the stacked packing bags 10b and transports it to the next process includes: a suction part 30 that suctions the packing bag 10b in an attachable and detachable manner; a transport part 34 that moves the suction part 30 between a suctioning position where the uppermost positioned packing bag 10b is suctioned and a transportation position that becomes the destination of the transportation; a direction detection part 35 that detects the direction of the packing bag 10b positioned uppermost; a direction changing part (the transport part 34) that changes the direction of the packing bag 10b suctioned to the suction part 30 based on the detected information by the direction detection part 35 so that the directions of the packing bags 10b in the transportation position becomes consistent.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a transport device that transports a packaging bag.

  2. Description of the Related Art In recent years, packaging bags in which a resin sheet is formed in a bag shape have been used instead of bottle containers such as plastic bottles and glass bottles. A packaging bag formed from a resin sheet can save resources as compared with a bottle container such as a plastic bottle or a glass bottle, and can be folded small after use, thereby contributing to a reduction in the volume of waste.

  As the packaging bag, for example, a packaging bag disclosed in Patent Document 1 is known. The packaging bag of Patent Literature 1 is composed of a bottom sheet and a pair of side sheets, and the folded bottom sheet is sandwiched between the pair of side sheets to heat each side edge of the bottom sheet and the side sheet. It is formed in a bag shape by welding.

  Further, as a transporting device used in a process of packing contents in a packaging bag or the like, a transporting device that adsorbs a packaging bag located at the top of a stacked packaging bag and transports the package to the next process is known. . For example, in Patent Literature 2, a suction bag for sucking a packaging bag is moved between a lowering position where it comes into contact with a packaging bag located at the top of the stacked packaging bags and a forward position where the packaging bag is advanced. A conveying device that supplies a packaging bag to the next process by performing a suction operation of the suction disk at a lowered position and performing a suction release operation of the suction disk at a forward position is disclosed.

JP 2003-191964 A JP 2011-178481 A

  By the way, when the packaging bags are transported using the transport device of Patent Document 1, if the packaging bags having different orientations are mixed in the stacked packaging bags, the packaging with different orientations is performed in the next process after the transportation. There is a case where work such as bag filling of a bag cannot be performed properly.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to be able to convey in a uniform direction even when packaging bags having different directions are mixed in stacked packaging bags. An object of the present invention is to provide a transport device.

  A transport device that solves the above problem is a transport device that takes out the uppermost packaging bag from the stacked packaging bags and transports the packaging bag to the next process, and an adsorption unit that detachably adsorbs the packaging bag. A transfer unit that moves the suction unit between a suction position that suctions the packaging bag positioned at the top, and a transfer position that is a transfer destination, and the orientation of the packaging bag positioned at the top, or the suction. A direction detection unit that detects the direction of the packaging bag sucked to the unit, and a suction unit that suctions the suction bag based on the detection information of the direction detection unit so that the direction of the packaging bag at the transport position is constant. A direction changing unit for changing the direction of the packaging bag.

  According to the above configuration, the direction of the packaging bag adsorbed by the suction unit is changed based on the direction of the packaging bag positioned at the uppermost portion or the direction of the packaging bag adsorbed by the suction unit, so that the transport bag is positioned at the transport position. The orientation of the packaging bag can be aligned.

  In the transport device, the packaging bag is a packaging bag in which the thickness on the opening side where the opening is located and the thickness on the bottom side where the bottom is located on the opposite side of the opening are different from each other. It is preferable that a housing portion for housing is provided, and in the housing portion, the packaging bag in a direction in which an opening is located in a specific direction side and the packaging bag in a direction in which a bottom portion is located in a specific direction side are mixed. .

  In the case of the packaging bags having the above-described configuration, a large number of packaging bags can be laminated in the storage section by laminating them in different directions so that the thickness after lamination is constant, rather than laminating them in the same direction. Therefore, according to the above configuration, since a large number of packaging bags are stacked in the storage unit, the frequency of the operation of refilling the storage bag with the packaging bags can be reduced.

  In the transport device, the direction changing unit may include a direction in which the opening is located in the specific direction and a direction of the packaging bag in only one of the directions in which the bottom is located in the specific direction. Is preferably changed by 180 degrees.

According to the above configuration, since the operation when changing the direction of the packaging bag is limited, the structure of the direction changing unit can be simplified.
In the transport device, it is preferable that the suction unit suctions the packaging bag at a plurality of positions, and operates so as to shorten a distance between the two sucked points in the packaging bag.

  According to the above configuration, after the packaging bag is sucked, the suction unit operates so as to make the distance between the two points sucked closer, so that the second sheet attached to the sucked packaging bag by static electricity or the like. The packaging bag can be peeled off and dropped. Thereby, it is possible to suppress the taking of two packaging bags.

  ADVANTAGE OF THE INVENTION According to this invention, even if the packaging bag of a different direction is mixed in the laminated packaging bag, it can convey in the same direction.

Exploded view of a packaging bag. The front view of a packaging bag. FIG. The top view of a storage part. Explanatory drawing in the case of conveying a packaging bag in a direction in which an opening is located on a specific direction side. Explanatory drawing in the case of conveying a packaging bag in a direction in which the bottom is located on the specific direction side. FIG. 9 is a schematic view of a transport device according to a modified example. FIG. 11 is an explanatory diagram of a case in which a packaging bag is transported in a direction in which a bottom portion is located on a specific direction side in a transport device of a modified example.

Hereinafter, an embodiment of the present invention will be described.
First, the packaging bag transported by the transport device of the present embodiment will be described.
As shown in FIG. 1, the packaging bag 10 includes a horizontally-long, substantially rectangular bottom sheet 11 that is folded in two so that the folds face upward, and a pair of vertically long sheets that are arranged to face each other so as to sandwich the bottom sheet 11. And a rectangular side sheet 12. Then, in a state in which the pair of side sheets 12 are overlapped with the entire folded bottom sheet 11 therebetween, the left and right sides and the lower edges of the side sheet 12 are respectively bonded and have an opening above. It is formed in a bag shape.

  As the bottom sheet 11 and the side sheets 12, a sheet material having a multilayer structure in which a seal layer is formed on the inner surface side and a non-seal layer is formed on the outer surface side is used. The sealing layer is a layer formed from a heat-welding resin material (for example, polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer). In addition, the non-seal layer is made of a material having no heat-weldability (for example, paper) or a resin material having a lower heat-weldability than the resin material forming the seal layer (for example, stretched polypropylene, polyester, polyamide, It is a layer formed from polyvinyl chloride, cellophane, polystyrene). The form of the non-sealing layer may be a sheet (film) or a nonwoven fabric.

  As shown in FIG. 2, at the left and right side edges of the packaging bag 10, the inner surfaces of the side sheets 12, and the inner surface of the side sheet 12 and the outer surface of the bottom sheet 11 have a substantially uniform width along both side edges. By the welding, the side edge welding portions 13 are formed. At the lower edge of the packaging bag 10, the inner surface of the side sheet 12 and the outer surface of the bottom sheet 11 are surrounded by an arc-shaped concave curve in the vertical direction and the left, right, and lower edges of the side sheet 12. The lower edge welded portion 14 is formed by heat-welding in the region that has been set.

  When the bottom sheet 11 is folded in two, the packaging bag 10 has a thickness between a portion where the bottom sheet 11 is sandwiched and a portion where the bottom sheet 11 is not sandwiched. Are different. Specifically, the thickness on the opening side where the opening is located and the thickness on the bottom side where the bottom is located on the opposite side of the opening are the amount by which the bottom sheet 11 is sandwiched (for two sheets). , Is getting thicker.

  Next, the transport device A of the present embodiment will be described with reference to FIGS. The transport device A is a device that takes out the uppermost packaging bag 10 from the stacked packaging bags 10 and transports the packaging bag 10 onto a conveyor B, which is the next process.

  As shown in FIGS. 3 and 4, the transport device A includes a storage unit 20 that stores the packaging bag 10. The accommodation unit 20 includes a first stack unit 21 a and a second stack unit 21 b that hold the stacked packaging bags 10, a position adjustment unit 22 that adjusts the position of the stacked packaging bags 10, and the stacked packaging bags 10. And a position detection unit 23 for detecting the position of.

  The first stack portion 21a and the second stack portion 21b are frame-shaped members that support the outer periphery and the lower portion of the packaging bags 10 stacked vertically, and are arranged side by side in the horizontal direction and connected to each other. In the first stack portion 21a and the second stack portion 21b, a packaging bag 10a in which the opening is located on the specific direction side (the right side in FIG. 3) and a packaging bag 10b in which the bottom portion is located on the specific direction side. They are alternately stacked every predetermined number of sheets (for example, every 50 sheets). Also, as shown in FIG. 4, the first stack portion 21a and the second stack portion 21b include a first position where the first stack portion 21a is located at an extraction position corresponding to a position adjustment portion 22 described later, and a first position where the first stack portion 21a is located. It is configured to be movable between a second position where the second stack portion 21b is located.

  As shown in FIG. 3, the position adjusting unit 22 is stacked in contact with the packaging bag 10 located at the lowermost part of the packaging bag 10 laminated on the first stack unit 21 a or the second stack unit 21 b located at the removal position. And a drive mechanism 22b for moving the support member 22a in the vertical direction. As the drive mechanism 22b, a known drive mechanism such as a drive mechanism using a motor or a drive mechanism using a fluid pressure cylinder can be used.

  The position detection unit 23 detects whether or not the uppermost part of the packaging bags 10 stacked on the first stack part 21a or the second stack part 21b located at the removal position has reached a predetermined specific position. As the detection method by the position detection unit 23, a known detection method such as a detection method by analyzing an image captured by a camera or a detection method using a photoelectric sensor can be used.

  The position detecting section 23 and the driving mechanism 22b are connected to the control section C. The position detector 23 outputs the detection information to the controller C. The operation of the drive mechanism 22b is controlled based on a signal output from the control unit C in accordance with detection information from the position detection unit 23.

  As shown in FIG. 3, the transport device A includes a suction unit 30 that detachably suctions the packaging bag 10. The suction unit 30 includes a base 31 and two arms 32 extending downward from the base 31. Each arm 32 is configured to be movable relative to the base 31 in a direction approaching and separating from each other. At the tip of each arm 32, a suction disk 33 is attached. The suction disk 33 is connected to suction means such as a vacuum pump via a tube (not shown). The suction unit 30 vacuum-adsorbs the packaging bag 10 by bringing the inside of the suction disk 33 into a vacuum state, and releases the vacuum suction to the packaging bag 10 by breaking the vacuum inside the suction disk 33.

  The transport device A includes a transport unit 34 that moves the suction unit 30. The transport unit 34 is a drive mechanism that cyclically moves the suction unit 30 between a standby position, a suction position at which the packaging bag 10 is sucked, and a transport position as a transfer destination, and extends the suction unit 30 in the vertical direction. This is a drive mechanism that rotates around an axis. As the driving mechanism constituting the transport unit 34, a known driving mechanism such as a driving mechanism using a motor or a driving mechanism using a fluid pressure cylinder can be used.

  As shown in FIG. 3, the standby position is a position above the first stack portion 21a or the second stack portion 21b located at the removal position and does not interfere with the first stack portion 21a or the second stack portion 21b. . As shown by the solid line in FIG. 5, the suction position is determined by the suction disk 33 contacting the packaging bag 10 located at the top of the first stack portion 21a or the second stack portion 21b located at the take-out position. Is a position for adsorbing. The transfer position is a position above the conveyor B, which is the transfer destination, as indicated by a broken line in FIG.

  As shown in FIG. 3, the transport device A detects the direction of the uppermost packaging bag 10 in the packaging bags 10 stacked on the first stack portion 21a or the second stack portion 21b located at the removal position. The detection unit 35 is provided. The direction detecting unit 35 determines whether the packaging bag 10 located at the top is the packaging bag 10a in which the opening is located in the specific direction or the packaging bag 10b in which the bottom is located in the specific direction. To detect. As the detection method by the direction detection unit 35, a known detection method such as a detection method by analyzing an image captured by a camera or a detection method using a photoelectric sensor can be used.

  The direction detection unit 35 and the transport unit 34 are connected to the control unit C. The direction detection unit 35 outputs the detection information to the control unit C. The transport unit 34 is controlled to rotate the suction unit 30 based on a signal output from the control unit C according to the detection information from the direction detection unit 35. In the present embodiment, the direction changing unit is configured by the transport unit 34.

Next, a mode of transporting the packaging bag 10 using the transport device A will be described.
First, as a preparation step, as shown in FIGS. 3 and 4, the packaging bags 10 are accommodated in the first stack portion 21 a and the second stack portion 21 b of the accommodation portion 20 in a stacked state. In the packaging bag 10, a packaging bag 10a in which the opening is located in the specific direction side and a packaging bag 10b in which the bottom portion is located in the specific direction side are alternately stacked every predetermined number.

  As shown in FIG. 3, when the first stack portion 21 a on which the packaging bags 10 are stacked is located at the removal position, the support member 22 a is raised, and the top of the stacked packaging bags 10 is sent to the position detection unit 23. The entire laminated packaging bag 10 is lifted up to a position (specific position) where the bag is detected.

  Next, as shown in FIG. 5, when the operator operates the operation switch, the transport unit 34 lowers the suction unit 30 from the standby position to the suction position. At the suction position, the suction disks 33 of the suction unit 30 abut against the packaging bag 10 located at the uppermost part of the first stack unit 21a, and the packaging bag 10 located at the uppermost position is vacuum-sucked to each suction disk 33.

  At this time, an operation is performed in which the arms 32 of the suction unit 30 are moved closer to each other and returned to the original position. As a result, the distance between the two points adsorbed by the suction pads 33 in the packaging bag 10 is temporarily reduced, and the packaging bag 10 is bent, and adheres to the attracted packaging bag 10 by static electricity or the like. The second packaging bag 10 peels off.

  At the timing until the suction unit 30 is lowered to the suction position, the direction detection unit 35 determines that the packaging bag 10 located at the top of the first stack unit 21a is the packaging bag 10a in which the opening is located in the specific direction. It is detected whether the packaging bag 10b is in the direction in which the bottom is located on the specific direction side. As shown in FIG. 5, when the uppermost packaging bag 10 is the packaging bag 10 a in which the opening is located in a specific direction, the transport unit 34 raises the suction unit 30 that has absorbed the packaging bag 10. Then, it is moved horizontally to the conveyor B.

  When the suction section 30 reaches the transport position on the conveyor B, the vacuum suction by the suction board 33 is released. When the vacuum suction is released, the packaging bag 10 is detached from the suction board 33 and placed on the conveyor B, and is conveyed by the conveyor B to a device for performing the operation of the next process (for example, a content filling device). .

  After the vacuum suction on the packaging bag 10 is released, the transport unit 34 raises the suction unit 30 and moves the suction unit 30 in the horizontal direction to return the suction unit 30 to the standby position. The transport device A repeatedly executes the above-described series of transport operations. As a result, the uppermost packaging bags 10 are transported one by one from the packaging bags 10 stacked on the first stack portion 21a to the next process.

  Also, as shown in FIG. 6, when the packaging bag 10 located at the top is the packaging bag 10b in the direction in which the bottom is located on the specific direction side, the transporting unit 34 supplies the suction unit 30 that has absorbed the packaging bag 10. Then, the suction unit 30 is moved in the horizontal direction toward the conveyor B while rotating the suction unit 30 around an axis extending in the vertical direction by 180 degrees. Thereby, the direction of the packaging bag 10b sucked by the suction unit 30 is changed by 180 degrees, and the direction of the packaging bag 10b at the transport position is aligned with the same direction as the packaging bag 10a whose opening is located on the specific direction side.

  Further, as shown in FIG. 6, as the continuous operation of transporting the packaging bag 10 progresses, the remaining amount of the packaging bag 10 in the first stack portion 21a decreases. At this time, the accommodating section 20 operates so as to maintain the topmost position of the packaging bags 10 stacked on the first stack section 21a at a specific position. That is, when the remaining amount of the packaging bag 10 decreases to a position where the top of the stacked packaging bag 10 is not detected by the position detection unit 23, the support member 22a rises and the top of the stacked packaging bag 10 is The whole of the stacked packaging bags 10 is lifted up to a position (specific position) detected by the position detection unit 23.

  When all the packaging bags 10 in the first stack portion 21a are conveyed and the remaining amount of the packaging bags 10 becomes zero, the support member 22a descends to a position where it does not interfere with the first stack portion 21a. Then, as shown by the arrow in FIG. 4, the first stack portion 21a and the first stack portion 21a are moved from the first position where the first stack portion 21a is located at the removal position to the second position where the second stack portion 21b is located at the removal position. The two stack unit 21b moves. Thereafter, the packaging bags 10 stacked on the second stack portion 21b are transported in the same manner. Meanwhile, the first stack portion 21a is refilled with the packaging bag 10. When all the packaging bags 10 in the second stack portion 21b are conveyed, the second stack portion 21b is located at the removal position from the second position where the first stack portion 21a is located at the removal position. The first stack unit 21a and the second stack unit 21b move.

Next, effects of the present embodiment will be described.
(1) The transport device A that takes out the packaging bag 10 located at the uppermost position from the stacked packaging bags 10 and transports the packaging bag 10 to the next process includes the adsorption unit 30 that detachably adsorbs the packaging bag 10 and the uppermost position. A transport unit 34 that moves the suction unit 30 between a suction position at which the packaging bag 10 to be sucked and a transport position at which the packaging bag 10 is transported; and a direction detection unit 35 that detects the orientation of the packaging bag 10 located at the top. A direction changing unit (conveying unit 34) that changes the direction of the packaging bag 10 adsorbed by the adsorbing unit 30 based on the detection information of the direction detecting unit 35 so that the direction of the packaging bag 10 at the conveying position is constant. And

  According to the above configuration, the orientation of the packaging bag 10 adsorbed by the suction unit 30 is changed based on the orientation of the packaging bag 10 located at the uppermost portion, thereby aligning the orientation of the packaging bag 10 at the transport position. Can be.

  (2) The packaging bag 10 is a packaging bag in which the thickness on the opening side where the opening is located is different from the thickness on the bottom side where the bottom is located opposite to the opening. The transport device A includes a storage unit 20 that stores the stacked packaging bags 10, and the storage unit 20 includes a packaging bag 10 a in which an opening is located in a specific direction and a direction in which a bottom is located in a specific direction. And the packaging bag 10b.

  In the case of the packaging bag 10 having the above-described configuration, it is better to stack a large amount of the packaging bags 10 in the storage unit 20 than to stack the packaging bags 10 in a different direction so that the thickness after the stacking is constant, rather than stacking the packaging bags 10 in the same direction. it can. Therefore, according to the above configuration, since a large number of packaging bags 10 are stacked on the storage unit 20, the frequency of the operation of refilling the storage bag 20 with the packaging bags 10 can be reduced.

(3) The direction changing unit changes the direction of only the packaging bag 10b in which the bottom is located on the specific direction side by 180 degrees.
According to the above configuration, since the operation when changing the direction of the packaging bag 10 is limited, the structure of the direction changing unit can be simplified.

(4) The suction unit 30 operates so as to suck the packaging bag 10 at two positions and to reduce the distance between the two points of the packaging bag 10 that are sucked.
According to the above configuration, after the packaging bag 10 is sucked, the suction unit 30 operates so as to make the distance between the two points sucked closer to each other, so that the suction bag 30 adheres to the sucked packaging bag 10 by static electricity or the like. The first packaging bag 10 can be peeled off and dropped. Thereby, taking out two sheets of the packaging bag 10 can be suppressed.

  (5) The storage unit 20 detects a stack unit (the first stack unit 21a and the second stack unit 21b) that holds the stacked packaging bags 10 and a position of the uppermost portion of the packaging bag 10 held by the stack units. Position detection unit 23 and position adjustment for adjusting the position of the stacked packaging bags 10 based on the detection information of the position detection unit 23 so as to maintain the position of the topmost portion of the stacked packaging bags 10 constant. And a unit 22.

  According to the above configuration, the packaging bag 10 can be adsorbed to the adsorbing section 30 at the same position at all times. Thereby, the movement trajectory of the suction unit 30 becomes constant, and the structure of the transport unit 34 can be simplified.

  (6) The stack unit includes a first stack unit 21a and a second stack unit 21b that individually house the packaging bag 10, and the first stack unit 21a and the second stack unit 21b are connected to the first stack unit 21a. It is possible to move between a first position where the accommodated packaging bag 10 is located at the removal position and a second position where the packaging bag 10 accommodated in the second stack portion 21b is located at the removal position.

  According to the above configuration, the refilling operation of the packaging bag 10 is performed on the first stack portion 21a or the second stack portion 21b which is not at the unloading position, thereby refilling the packaging bag 10 without stopping the transport device A. it can.

The present embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
The configuration of the packaging bag 10 to be transported is not particularly limited. For example, the packaging bag is not limited to the opening side and the bottom side, and may be a packaging bag in which the thickness of any part is different, or the thickness of each part is all the same. Alternatively, the packaging bag may include a bag body formed in a bag shape from a sheet material and a columnar reinforcing member for reinforcing a side edge of the bag body.

  In the above embodiment, two types of packaging bags 10 having different directions at an angle of 180 degrees are alternately laminated for each predetermined number of sheets, but the method of laminating the packaging bags 10 is not particularly limited. For example, packaging bags 10 having different directions at angles other than 180 degrees may be laminated, or three or more types of packaging bags 10 having different directions may be laminated. Further, the difference in the orientation of each packaging bag 10 in the stacked packaging bags 10 may be a regular difference such as every predetermined number of sheets, or may be a random difference. Further, the stacked packaging bags 10 may be stacked in the same orientation. In this case, even if the packaging bags 10 having different directions are erroneously mixed in the stacked packaging bags 10, the different packaging bags 10 can be detected and transported so as to be aligned at the transport destination.

  In the above-described embodiment, the direction changing unit (the transport unit 34) changes the direction only for a part of the stacked packaging bags 10 (the packaging bag 10b). The direction of the packaging bag 10 may be changed. For example, the direction of the packaging bag 10a in which the opening is located in the specific direction is changed by 90 degrees clockwise, and the direction of the packaging bag 10b in which the bottom is located in the specific direction is turned counterclockwise. Change 90 degrees. Also in this case, the orientation of the packaging bag 10 at the transport position can be made uniform. Further, the amount of change in the direction by the direction changing unit can be changed as appropriate according to the direction of the stacked packaging bags 10.

  The direction changing unit is not limited to the configuration provided as the transport unit 34, and a direction changing unit may be provided separately from the transport unit 34. For example, the transport device A according to the modification shown in FIG. 7 includes a turntable 40 as a direction changing unit near the accommodation unit 20. The turntable 40 is controlled to rotate based on a signal output from the control unit C in accordance with the detection information from the direction detection unit 35.

  In the transport device A shown in FIG. 7, when an operation switch is operated by an operator, the transport unit 34 lowers the suction unit 30 from the standby position to the suction position, and vacuum-sucks the packaging bag 10 located at the uppermost position. . At the timing until the suction unit 30 is lowered to the suction position, the direction detection unit 35 determines that the packaging bag 10 located at the top of the first stack unit 21a is the packaging bag 10a in which the opening is located in the specific direction. It is detected whether the packaging bag 10b is in the direction in which the bottom is located on the specific direction side. When the packaging bag 10 located at the uppermost part of the first stack portion 21a is the packaging bag 10a in which the opening is located on the specific direction side, the transport section 34 transports the packaging bag 10 to the conveyor B as it is. I do.

  On the other hand, as shown in FIG. 8, when the packaging bag 10 located at the top of the first stack portion 21a is the packaging bag 10b whose bottom is located on the specific direction side, the transport device A includes the turntable 40. The packaging bag 10 is conveyed to the conveyor B while changing the direction of the packaging bag 10 with. More specifically, the transport unit 34 transports the vacuum-sucked packaging bag 10 onto the turntable 40. Then, when the turntable 40 on which the packaging bag 10 is placed is rotated by 180 degrees, the orientation of the packaging bag 10 becomes the same as the direction of the packaging bag 10a whose opening is located on the specific direction side. After that, the transport unit 34 vacuum-adsorbs the packaging bag 10 placed on the turntable 40 and transports it to the conveyor B.

  Instead of the direction detection unit 35 that detects the direction of the topmost packaging bag 10 in the stacked packaging bags 10, a direction detection unit 35 that detects the direction of the packaging bag 10 adsorbed by the suction unit 30 is used. You may.

  In the above embodiment, the suction unit 30 includes the two sets of the arms 32 and the suction disks 33, and is configured to suction the packaging bag 10 at two positions. However, the number of the arms 32 and the suction disks 33 is changed. Thus, the configuration may be such that the packaging bag 10 is sucked at one or three or more positions.

  The operation of the suction unit 30 for shortening the distance between the two suctioned points in the packaging bag 10 is not particularly limited. For example, the operation may be a linear approach or a curved approach. Alternatively, an operation may be performed in which only one of the two arms 32 is moved to move only one of the two attracted points.

  In the above embodiment, the direction change unit is configured by the transport unit 34, but a direction change unit may be provided separately from the transport unit 34. For example, a drive mechanism for rotating the base 31 to which the arm 32 is connected may be provided as a direction change unit for the suction unit 30.

-The conveyance device A in which the accommodating part 20 is omitted may be sufficient.
Next, technical ideas that can be grasped from the above-described embodiment and modified examples will be described below.
(B) a storage unit for storing the stacked packaging bags is provided, the storage unit being a stack unit for holding the stacked packaging bags, and an uppermost position in the packaging bags held by the stack unit; A position detecting unit for detecting the position of the packaging bag to be performed, and the packaging bags stacked so as to keep the position of the uppermost part of the laminated packaging bags constant based on the detection information of the position detecting unit. And a position adjustment unit that adjusts the position of the transfer device.

  (B) The stack section includes a first stack section and a second stack section each independently storing the packaging bag, and the first stack section and the second stack section are stored in the first stack section. The packaging bag is movable between a first position where the packaging bag is located at a removal position corresponding to the suction position and a second position where the packaging bag accommodated in the second stack unit is located at the removal position. The above-mentioned conveying device.

A: conveying device, 10, 10a, 10b: packaging bag, 20: accommodation unit, 21a: first stack unit, 21b: second stack unit, 22: position adjustment unit, 23: position detection unit, 30: suction unit, 33: suction disk, 34: transport unit, 35: direction detection unit, 40: turntable.

Claims (4)

A transport device that takes out the packaging bag located at the top from the stacked packaging bags and transports the packaging bag to the next process,
An adsorption unit that detachably adsorbs the packaging bag,
An adsorption position for adsorbing the packaging bag located at the uppermost position, and a conveyance unit for moving the adsorption unit between a conveyance position as a conveyance destination,
A direction detection unit that detects the direction of the packaging bag located at the uppermost portion, or the direction of the packaging bag sucked to the suction unit,
A direction changing unit that changes the direction of the packaging bag sucked by the suction unit based on the detection information of the direction detection unit so that the direction of the packaging bag at the transport position is constant. Characteristic transport device. The packaging bag is a packaging bag in which the thickness on the opening side where the opening is located is different from the thickness on the bottom side where the bottom is located on the opposite side of the opening,
Comprising a storage section for storing the stacked packaging bags,
The said accommodation part has the said packaging bag of the direction in which the opening is located in the specific direction side, and the said packaging bag of the direction in which the bottom part is located in the specific direction side mixed, The said accommodation bag is characterized by the above-mentioned. Transport device.   The direction changing unit changes the direction of the packaging bag of only one of the packaging bag in which the opening is located in the specific direction and the packaging bag in which the bottom is located in the specific direction by 180 degrees. 3. The transfer device according to claim 2, wherein: 4. The suction unit according to claim 1, wherein the suction unit suctions the packaging bag at a plurality of positions, and operates so as to reduce a distance between the two sucked points in the packaging bag. 5. 3. The transfer device according to claim 1.