JP2023063901A - Conveyance system - Google Patents

Abstract

To rotate a plurality of bags conveyed along a plurality of conveyance lines while suppressing an increase in an interval between the conveyance lines.SOLUTION: A conveyance system 10 includes: a plurality of conveyance lines 15 extending in a conveyance direction and positioned adjacent to each other in a direction forming a right angle with respect to the conveyance direction; a conveyance device 11 for conveying a plurality of bags 90 along each of the plurality of conveyance lines; a direction detection device 12 for detecting directions of the plurality of bags; and a direction correction device 13 for correcting the directions of the plurality of bags conveyed along the plurality of conveyance lines according to detection results of the direction detection device. A position where a direction of the bag conveyed along one of two conveyance lines positioned adjacent to each other is corrected by the direction correction device and a position where a direction of the bag conveyed along the other is corrected by the direction correction device are shifted to at least either direction of the conveyance direction and a height direction.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to transport systems.

A device that conveys a plurality of bags along a plurality of conveying lines is used to efficiently convey a large number of bags.

For example, Patent Document 1 discloses a packaging machine equipped with a conveyor magazine type bag feeder capable of supplying four bags to four gripper pairs at the same time.

JP 2013-233975 A

Bags are required to be supplied to a bag processing apparatus such as a packaging machine in a desired orientation. However, not all bags in large quantities supplied to a bag processing machine are initially properly oriented. In such cases, each bag is pre-checked for orientation and, if necessary, reoriented before being fed to the bag processing equipment.

To correct the orientation of the bag, the bag must be rotated. Therefore, it is necessary to reserve space for rotating the bags and correcting the orientation of the bags before they are fed to the bag processing apparatus. Correcting the orientation of the bag is usually done by rotating the bag 180 degrees about the vertical axis with the front and back sides of the bag facing up and down. In this case, it is necessary to secure a space that allows the bag to rotate 180 degrees while extending horizontally.

A space for correcting the direction of the bags must be secured even when a plurality of transfer lines are provided. Therefore, it is required to provide a sufficient space between the adjacent transport lines so that the bags transported along the adjacent transport lines can rotate without coming into contact with each other.

On the other hand, the spacing between the transfer lines cannot always be freely determined. For example, when transporting a plurality of bags along a plurality of transport lines in order to supply bags to a plurality of gripper pairs, it is required that the transport line spacing be determined according to the gripper pair spacing. On the other hand, in order to secure a space for correcting the orientation of the bags, there are cases where it is required to provide a gap between the conveying lines that is larger than the gap between the gripper pairs. In this case, after correcting the orientation of the bags, a transport line configuration is required to narrow the interval between the transport lines to match the interval between the gripper pairs.

The present disclosure has been made in view of the circumstances described above, and provides a technique that enables rotation of a plurality of bags conveyed along a plurality of conveying lines while suppressing an increase in the distance between the conveying lines. intended to

One aspect of the present disclosure includes: a plurality of transport lines extending in a transport direction and positioned adjacent to each other in a direction perpendicular to the transport direction; a transport device that transports a plurality of bags along each of the plurality of transport lines; an orientation detection device for detecting orientations of a plurality of bags; A position for correcting the orientation of bags conveyed along one of two conveying lines adjacent to each other by an orientation correcting device, and an orientation correcting device for correcting the orientation of bags conveyed along the other. Position refers to a transport system that is displaced in the transport direction and/or in the height direction.

Another aspect of the present disclosure includes a plurality of conveying lines extending in the conveying direction and positioned adjacent to each other in a direction perpendicular to the conveying direction, and a conveying device that conveys a plurality of bags along each of the plurality of conveying lines. an orientation detection device for detecting the orientation of the plurality of bags; and an orientation correction device for correcting the orientation of the plurality of bags conveyed along the plurality of conveyance lines according to the detection result of the orientation detection device; The bag whose orientation is to be corrected relates to a conveying system in which the bag is rotated about a conveying axis extending in the conveying direction by an orientation correcting device and placed in a corrected posture, and the orientation is corrected in the corrected posture.

A position where an orientation correcting device corrects the orientation of a bag conveyed along one of two conveying lines positioned adjacent to each other, and the correcting device corrects the orientation of the bag conveyed along the other. The position may be displaced with respect to the transport direction.

A plurality of orientation correcting devices may be provided so as to correspond to each of the plurality of conveying lines, and each of the plurality of orientation correcting devices may correct the orientation of the bag while transferring the bag in the conveying direction.

A plurality of orientation correctors may be integrally provided and reciprocated together along the transport direction.

According to the present disclosure, it is possible to rotate a plurality of bags conveyed along a plurality of conveying lines while suppressing an increase in the distance between the conveying lines.

FIG. 1 is a side view showing an example of a transport system. FIG. 2 is a plan view showing an example of the transport system. FIG. 3 is a plan view showing an example of a reciprocating unit. FIG. 4A is a perspective view illustrating an example of accommodation of a bundle of bags. FIG. 4B is a perspective view illustrating an example of accommodation of the bundle of bags. FIG. 5 is a block diagram showing an example of the control configuration of the transport system. FIG. 6 is a diagram showing an operation example of the transport system. FIG. 7 is a diagram showing an operation example of the transport system. FIG. 8 is a diagram showing an operation example of the transport system. FIG. 9 is a diagram showing an operation example of the transport system. FIG. 10 is a diagram showing a transport system according to a first modified example. FIG. 11 is a diagram showing a method of correcting the orientation of the bag according to the second modified example.

An embodiment of the present disclosure will be described below with reference to the drawings.

FIG. 1 is a side view showing an example of the transport system 10. As shown in FIG. FIG. 2 is a plan view showing an example of the transport system 10. As shown in FIG. FIG. 3 is a plan view showing an example of the reciprocating unit 40. As shown in FIG. FIGS. 4A and 4B are perspective views illustrating an example of accommodation of the bundle of bags 91. FIG.

In the following description, the X, Y and Z directions are orthogonal to each other, the X and Y directions extend horizontally, and the Z direction extends in the height direction.

The conveying system 10 takes out the bags 90 one by one from the bag bundle 91, corrects the orientation of the bags 90 as necessary, and delivers the properly oriented bags 90 to the bag receiving device 48 provided in the subsequent stage. In particular, the transport system 10 of the present embodiment includes a plurality of transport lines 15 and simultaneously transports a plurality of bags 90 in the transport direction (X direction) along each of the plurality of transport lines 15 .

Although the size and shape of the bag 90 are not limited, in this example, an empty bag (empty bag) 90 having a rectangular planar shape is conveyed in the conveying system 10 . Each bag 90 has a relatively large size in the longitudinal direction (the direction from one of the top and bottom portions of the bag 90 to the other) and a relatively large size in the width direction (the direction in which each of the top and bottom portions of the bag 90 extends). It has a small size (smaller than longitudinal size).

The bag bundle 91 has a plurality of bags 90 stacked in the height direction (Z direction). As shown in FIG. 4A, each bag bundle 91 of this example has a thick portion 91a with a relatively large thickness and a thin portion 91b with a relatively small thickness. As shown in FIG. 4B, the plurality of bag bundles 91 are stacked such that the thick portion 91a of one bag bundle 91 adjacent in the height direction and the thin portion 91b of the other bag bundle 91 are adjacent to each other.

If each bag 90 is a self-supporting bag, the thickness of the bottom portion having the folding structure may be greater than the top portion provided with the mouth portion. Also, when a spout is attached to the top of each bag 90, the thickness of each bag 90 including the spout may be greater at the top than at the bottom. A bundle of bags 91 formed by stacking a plurality of bags 90 having locally different thicknesses in the same posture and in the same direction has a thick portion and a thin portion.

When a plurality of bag bundles 91 each having a thick portion 91a and a thin portion 91b are stored in a storage box such as a cardboard box, the top and bottom portions of the bag bundle 91 are staggered and the bag bundles 91 are sequentially stacked (Fig. 4B), a plurality of bag bundles 91 can be stored in the storage box with good space efficiency.

However, in this case, the orientation of the bags 90 included in the plurality of bag bundles 91 in the storage box is not constant. Therefore, when a plurality of bags 90 are taken out from the storage box at once, the plurality of bags 90 may include bags 90 having different orientations. In particular, when the thickness of the bundle of bags 91 can vary within the storage box, it is not easy to accurately pick out only a plurality of bags 90 having the same orientation by a machine such as a robot hand. Therefore, the orientation of each bag 90 taken out of the storage box is checked, the orientation of each bag 90 is corrected if necessary, and then each bag 90 is sent to the subsequent stage.

As shown in FIG. 2, the transport system 10 of this example has a plurality of transport lines 15 (first transport line 15a to fourth transport line 15d) each extending in the transport direction (X direction). The plurality of transport lines 15 are arranged at regular intervals in a horizontal direction (Y direction) perpendicular to the transport direction.

In this embodiment, the distance between adjacent transport lines 15 (especially the distance between the center positions of the transport lines 15 in the Y direction) is smaller than the maximum length of the planar size of the bag 90 . When the bag 90 having a rectangular planar shape is conveyed along each conveying line 15, the distance between the Y-direction center positions of the adjacent conveying lines 15 is the side wall surface of the bag 90 (that is, the two sides extending in the vertical direction). and the length of the diagonal of the front surface or back surface defined by two sides extending in the width direction).

Each transport line 15 is provided with a bag bundle pushing device 25 , an orientation detector 12 , a bag detection sensor 36 , a bag take-out device 38 , an orientation correction device 13 , a conveyor section 43 , a movable stopper 45 and a bag transfer section 47 .

The bag bundle pushing-in device 25 has a push-in drive unit 26 and a push-in unit 27 provided on the base 21 shown in FIG. The pushing portion 27 has a portion extending in the transport direction (X direction) and a portion extending in the height direction (Z direction). The push-in portion 27 is driven by the push-in drive portion 26 to reciprocate along the transport direction (X direction). The forward direction of the transport direction (the right direction in FIGS. 1 and 2) is called the forward transport direction, and the reverse direction of the transport direction (the left direction in FIGS. 1 and 2) is called the reverse transport direction. In the following description, the downstream side refers to the forward transport direction side, and the upstream side refers to the reverse transport direction side, unless otherwise specified.

The push-in portion 27 (especially the portion extending in the height direction) moves in the first mounting table groove 31a provided in the first mounting table 31 and the second mounting table groove 31a provided in the second mounting table 32 when moving in the forward and reverse conveying directions. 2 passes through the mounting table groove 32a. In this example, the first mounting table 31 and the second mounting table 32 are separated from each other in the transport direction (X direction), but the first mounting table 31 and the second mounting table 32 are in contact with each other in the transport direction. Alternatively, the first mounting table 31 and the second mounting table 32 may be integrally provided.

The bundle of bags 91 placed on the first mounting table 31 is pushed by the pushing portion 27 moving in the forward conveying direction to be moved in the forward conveying direction and placed on the second mounting table 32 . The height position of the mounting surface of the second mounting table 32 is the same as the height position of the mounting surface of the first mounting table 31 or lower than the height position of the mounting surface of the first mounting table 31 . Therefore, the bundle of bags 91 on the first mounting table 31 can be smoothly moved onto the second mounting table 32 by being pushed by the pushing portion 27 .

After the bundle of bags 91 is placed on the second mounting table 32, the push-in portion 27 moves in the reverse conveying direction and is arranged at the standby position (see FIG. 1) located on the reverse conveying direction side of the first mounting table 31. be. A new bundle of bags 91 is placed on the empty first placing table 31 while the push-in portion 27 is placed at the standby position. The method of placing the bundle of bags 91 on the first mounting table 31 is not limited, and the bundle of bags 91 may be placed on the first mounting table 31 manually, or the bundle of bags 91 may be placed on the first mounting table 31 by a machine such as a robot hand. 91 may be placed. After all the bags 90 have been taken out from the second mounting table 32 , the bundle of bags 91 on the first mounting table 31 is moved in the forward conveying direction by the pushing portion 27 , and a new stack of bags 91 is placed on the second mounting table 32 . A bundle of bags 91 is replenished.

The presence or absence of the bag 90 on the second mounting table 32 is detected by the bag detection sensor 36 . The specific configuration of the bag detection sensor 36 is not limited, and the bag detection sensor 36 can be configured using, for example, an optical sensor. The bag detection sensor 36 shown in FIG. 1 is attached to the second support block 35 fixed to the base 21, and detects the presence or absence of the bag 90 on the second mounting table 32 via the second mounting table groove 32a (see FIG. 2). can be detected by

A conveyer section 43 that conveys the bags 90 downstream is provided on the downstream side of the second mounting table 32 . The conveyor section 43 of this example includes two endless string belts (see FIG. 2) spaced apart in the Y direction, and a plurality of endless string belts that are rotatably attached to the conveyor support section 42 and guide the respective endless string belts. It has guide rollers and a conveyor driving section 44 for transmitting power to each endless string belt to run each endless string belt. Under the drive of the conveyor drive unit 44, the two endless string belts (especially the portion exposed upward) intermittently move in the conveying direction (X direction) together with the bag 90 placed thereon. It should be noted that the two endless string belts may run continuously without stopping intermittently under the drive of the conveyor driving section 44 .

A reciprocating unit 40 is attached to the gantry 21 so as to be reciprocally movable in the forward transport direction and the reverse transport direction. The reciprocating unit 40 of this example includes a reciprocating support plate 53, a plurality (four) of bag take-out devices 38 attached to the reciprocation support plate 53, and a plurality (four) of orientation correcting devices 13 (first orientation correcting device 13a). to the fourth orientation correction device 13d). The reciprocating support plate 53 is connected to the second support block 35 and the reciprocating movement driving section 41 via a plurality (four) of reciprocating drive links 54 that constitute a parallel link mechanism. The second support block 35 and the reciprocating drive unit 41 are fixedly attached to the base 21 .

When rotational power is transmitted from the reciprocating drive unit 41 to one reciprocating drive link 54, each reciprocating drive link 54 swings, and a plurality of bag take-out devices 38 and a plurality of orientation correction devices attached to the reciprocating support plate 53 are mounted. 13 integrally move in the forward and reverse conveying directions. Thus, the reciprocating movement driving section 41 is a driving section for moving each bag removing device 38 and each orientation correcting device 13 .

The bag take-out device 38 includes a take-out expansion/contraction section 56 and a take-out sucker 50 . The extension/retraction part 56 is composed of, for example, an air cylinder, and has a protruding rod whose amount of downward protrusion from the main body part is variable. The take-out sucker 50 is provided so as to be switchable between suction and release of suction, and can switch between holding the bag 90 by suction and holding and releasing the suction.

The bag take-out device 38 moves in the conveying direction (X direction) while the take-out sucker 50 sucks and holds the bag 90 on the second mounting table 32 , and takes out the bag 90 at a position facing the conveyor section 43 . The bag 90 is placed on the conveyor part 43 by releasing the holding of the bag 90 by the suction cups 50 . In this manner, the bag take-out device 38 transfers the bags 90 one by one from the second mounting table 32 to the conveyor section 43 .

The orientation detection device 12 is provided on the mount 21 via a stand 33 and a first support block 34 . The orientation detection device 12 is a device that detects the orientation of the bag 90 . The orientation detection device 12 of this example detects the orientation of the bag 90 lifted from the second mounting table 32 and transferred by the bag take-out device 38 . In this example, the orientation detection device 12 is configured by an imaging device capable of imaging the bag 90, but the configuration of the orientation detection device 12 is not limited. For example, the orientation detection device 12 may irradiate the detection target bag 90 with detection light such as laser light, and detect the orientation of the bag 90 based on reflection, blocking and/or transmission of the laser light at the bag 90. .

The orientation correction device 13 includes a correction expansion/contraction section 57 , a rotating section 52 and an orientation changing sucker 51 . The corrective expansion/contraction part 57 is composed of, for example, an air cylinder, and has a protruding rod whose downward protrusion amount from the main body part is variable. The orientation correcting device 13 lifts the bag 90 from the conveyer section 43 in a state in which the orientation changing sucker 51 sucks and holds the bag 90, and rotates the bag 90 by rotating the rotating section 52 as necessary. By correcting the direction of the bag 90 and releasing the holding of the bag 90 by the direction changing suction cups 51, the bag 90 is put on the conveyor part 43 again.

As described above, each bag 90 is sent downstream via the first mounting table 31 , the second mounting table 32 and the conveyor section 43 . In this example, as shown in FIG. 2, each bag 90 has a first conveying area P1, a second conveying area P2, a third conveying area P3, a fourth conveying area P4, and a fifth conveying area P5 from upstream to downstream. and the sixth transport area P6. The first transport area P<b>1 is an area corresponding to the first mounting table 31 , and the second transport area P<b>2 is an area corresponding to the second mounting table 32 . The third conveying area P3 to the sixth conveying area P6 are areas corresponding to the conveyor section 43. As shown in FIG.

A bag take-out device 38 provided for each transport line 15 reciprocates in the second transport area P2 and the third transport area P3.

The orientation correcting device 13 (first orientation correcting device 13a and third orientation The correction device 13c) reciprocates in the third transport area P3 and the fourth transport area P4. On the other hand, the orientation correcting device 13 (the second orientation correcting device 13b and the fourth The four-orientation correction device 13d) reciprocates in the fourth transport area P4 and the fifth transport area P5.

"All the bag take-out devices 38", "the first orientation correction device 13a and the third orientation correction device 13c", and "the second orientation correction device 13b and the fourth orientation correction device 13d" attached to the reciprocating support plate 53 in this way are provided so as to be shifted by one transport area with respect to the transport direction (X direction).

A movable stopper 45 is provided for each of the third transport area P3, the fourth transport area P4, and the fifth transport area P5 of each transport line 15. As shown in FIG. Note that each movable stopper 45 is shown in a simplified manner in FIG. The movable stopper 45 prevents downstream movement of the bag 90 located in the corresponding conveying area while it is arranged in the closed position, and prevents the bag 90 located in the corresponding conveying area while it is arranged in the open position. Allow downstream movement.

The bag delivery section 47 holds the bag 90 located in the sixth transport area P6, lifts it from the conveyor section 43, and delivers the bag 90 to the bag receiving device . A relay device (not shown) such as a gripper device is provided between the bag delivery unit 47 and the bag receiving device 48. The bag 90 is delivered from the bag delivery unit 47 to the relay device, and from the relay device to the bag receiving device 48. A bag 90 may be handed over.

The bag receiving device 48 moves the bag 90 received from the bag delivery section 47 to the rear stage. The bag 90 moved to the subsequent stage by the bag receiving device 48 may be subjected to arbitrary processing by another device, or may be released from the bag receiving device 48 and stored in a storage section (not shown).

FIG. 5 is a block diagram showing an example of the control configuration of the transport system 10. As shown in FIG.

A control section 60 of the transport system 10 is connected to the orientation detection device 12 , the bag detection sensor 36 , the rotation section 52 and the pushing drive section 26 .

The “orientation information of the bag 90 ” detected by the orientation detection device 12 is sent from the orientation detection device 12 to the control section 60 .

The control unit 60 determines whether or not it is necessary to change the orientation of the bag 90 according to the detection signal from the orientation detection device 12 . When it is determined that the orientation of the bag 90 needs to be changed, under the control of the control unit 60, the corresponding rotating unit 52 is rotated while the corresponding orientation changing sucker 51 holds the bag 90. The orientation of the bag 90 is corrected. On the other hand, when it is determined that the direction of the bag 90 does not need to be changed, the corresponding rotating portion 52 is rotated under the control of the control portion 60 while the corresponding direction changing sucker 51 holds the bag 90 . Instead, the orientation of bag 90 is maintained.

Also, the “information on the presence or absence of the bag 90 on the second mounting table 32 ” detected by the bag detection sensor 36 is sent from the bag detection sensor 36 to the controller 60 .

The control unit 60 determines whether or not the bag bundle 91 needs to be replenished on the second mounting table 32 according to the detection signal of the bag detection sensor 36 . When it is determined that the bag bundle 91 needs to be replenished on the second mounting table 32, the pushing driving section 26 moves the pushing section 27 in the forward conveying direction under the control of the control section 60, thereby moving the first mounting table. A new bundle of bags 91 is moved from the stack 31 to the second mounting table 32 . On the other hand, when it is determined that it is not necessary to replenish the bundle of bags 91 on the second mounting table 32 , the push-in drive unit 26 causes the push-in unit 27 to wait at the standby position under the control of the control unit 60 .

Next, an operation example of the transport system 10 will be described.

6 to 9 are diagrams showing examples of the operation of the transport system 10. FIG.

Each bag 90 is manually or mechanically supplied as a bag bundle 91 to the first conveying area P1 (the first mounting table 31), and is pushed from the first conveying area P1 (the first mounting table 31) by the bag bundle pushing device 25 to the second conveying area P1 (the first mounting table 31). It is transported to the transport area P2 (the second mounting table 32). Then, each bag 90 is conveyed from the second conveying area P2 (second mounting table 32) to the third conveying area P3 (conveyor section 43) by the bag take-out device .

Each bag 90 conveyed along the first conveying line 15a and the third conveying line 15c is moved from the third conveying area P3 (conveyor section 43) to the fourth conveying area P4 (conveyor section 43) by the direction correcting device 13. It is conveyed and conveyed by the conveyor section 43 from the fourth conveying area P4 (conveyor section 43) to the fifth conveying area P5 (conveyor section 43).

On the other hand, each bag 90 conveyed along the second conveying line 15b and the fourth conveying line 15d is transferred from the third conveying area P3 (conveyor section 43) to the fourth conveying area P4 (conveyor section 43) by the conveyer section 43. It is conveyed and conveyed by the orientation correcting device 13 from the fourth conveying area P4 (conveyor section 43) to the fifth conveying area P5 (conveyor section 43).

In each transport line 15 , each bag 90 is transported from the fifth transport area P 5 to the sixth transport area P 6 by the conveyor section 43 and transported from the sixth transport area P 6 to the bag receiving device 48 by the bag delivery section 47 .

The conveying device 11 that conveys the bags 90 in the forward conveying direction (X direction) in this manner includes the bag bundle pushing device 25, the bag take-out device 38, the orientation correcting device 13, the conveyor section 43, and the bag delivery section 47. 90 is intermittently transported in the forward transport direction by the corresponding transport device 11 .

While each bag 90 is being transferred through the second conveying area P2 to the fifth conveying area P5 as described above, it is rotated as necessary to correct the orientation of each bag 90 as follows. .

That is, in the state shown in FIG. 6, regarding each transport line 15, the bundle of bags 91 is placed on the first stage 31 (second transport area P2), and the third transport area P3 and the fourth transport area P4 of the conveyor section 43 are placed. and the fifth transport area P5, a bag 90 is placed thereon.

The bags 90 placed on each of the third conveying area P3, the fourth conveying area P4, and the fifth conveying area P5 of the conveyor section 43 are conveyed downstream (in the forward conveying direction) by the corresponding movable stoppers 45 in the closed state. It is designed not to be The bags 90 placed on each of the third conveying area P3, the fourth conveying area P4, and the fifth conveying area P5 of the conveyor section 43 may be in contact with the corresponding movable stoppers 45 in the closed state, No contact is required. For example, the bags 90 may be placed on each of the third conveying area P3 to the fifth conveying area P5 of the conveyer portion 43 in a stopped state while the conveyer portion 43 is not running but stopped. Alternatively, while the conveyor section 43 is running, the bags 90 on the conveyor section 43 are blocked by the corresponding closed movable stoppers 45 in each of the third conveying area P3 to the fifth conveying area P5, and are prevented from moving downstream. It may be blocked.

By arranging each reciprocating drive link 54 at the first swing attitude position shown in FIG. 6, the reciprocating support plate 53 is arranged at the first swing support position. As a result, all the bag take-out devices 38 associated with the respective transfer lines 15 are positioned in the second transfer area P2, and the first orientation correction devices 13a and 13a associated with the first transfer line 15a and the third transfer line 15c The third orientation correcting device 13c is positioned in the third transport area P3, and the second orientation correcting device 13b and the fourth orientation correcting device 13d associated with the second transport line 15b and the fourth transport line 15d are located in the fourth transport area P4. Positioned in

In the state where each reciprocating drive link 54 is arranged at the first swing posture position, the amount of downward projection of the projecting rod of the take-out expansion/contraction section 56 of each bag take-out device 38 is increased to increase the amount of downward protrusion of the bag on the first placing table 31 . The take-out sucker 50 sticks to the surface (exposed surface) of the uppermost bag 90 of the bundle 91 . In addition, the amount of downward projection of the projecting rods of the correction expansion/contraction sections 57 of the first orientation correcting device 13a and the third orientation correcting device 13c is increased, and the conveyer section in the third conveying area P3 of the first conveying line 15a and the third conveying line 15c. Orientation change sucker 51 sticks to the surface of bag 90 on 43 . Further, the amount of downward protrusion of the protruding rods of the corrective expansion/contraction sections 57 of the second orientation correcting device 13b and the fourth orientation correcting device 13d is increased, and the conveyer section in the fourth conveying area P4 of the second conveying line 15b and the fourth conveying line 15d. Orientation change sucker 51 sticks to the surface of bag 90 on 43 .

Thereafter, as shown in FIG. 7, in a state in which the take-out suction cups 50 of each bag take-out device 38 suck and hold the bag 90, the amount of downward protrusion of the projecting rod of each take-out expansion/contraction section 56 is reduced, and the bag 90 is taken out. Together with the suction cup 50, it is lifted in the Z direction. In addition, while the orientation changing suction cups 51 of the orientation correcting devices 13 (each of the first orientation correcting device 13a to the fourth orientation correcting device 13d) are sucking and holding the bag 90, the protruding rods of the respective correcting expansion/contraction portions 57 point downward. The amount of protrusion is reduced and the bag 90 is lifted in the Z direction together with the reorienting suction cups 51 .

After that, each reciprocating drive link 54 swings from the first swing posture position (see FIG. 7) toward the second swing posture position (see FIG. 8) under the drive of the reciprocating drive section 41 . In this process, each reciprocating drive link 54 moves along an arcuate track, and the reciprocating support plate 53 moves in the forward conveying direction (X direction), once ascends, then descends, and reaches the second rocking support position ( (see FIG. 8). In this process, the bag 90 sucked by each extraction sucker 50 and the bag 90 sucked by each orientation changing sucker 51 also move in the forward conveying direction, move upward once, and then descend.

As a result, each bag take-out device 38 (each take-out sucker 50) conveys the bag 90 from the second conveying area P2 to the third conveying area P3, and the first orientation correcting device 13a and the third orientation correcting device 13c (orientation changing suckers) 51) conveys the bag 90 from the third conveying area P3 to the fourth conveying area P4. The sheet is transported to the fifth transport area P5.

Note that since the reciprocating unit 40 uses a parallel link mechanism, each reciprocating drive link 54 swings from the first swing posture position (see FIG. 7) to the second swing posture position (see FIG. 8). , each take-out sucker 50 and each direction-changing sucker 51 moves in the forward conveying direction while maintaining its downward orientation, and the bag 90 held by each take-out sucker 50 and each direction-changing sucker 51 basically maintains its posture and moves forward. Move in the transport direction.

In this embodiment, the direction of the bag 90 lifted from the first mounting table 31 by the take-out sucker 50 (bag take-out device 38) is detected by the corresponding direction detection device 12 (see FIG. 7), and the detection result is detected by the direction detection device. 12 to the control unit 60 (see FIG. 5). If the control unit 60 determines that the orientation of the bag 90 is inappropriate and the orientation of the bag 90 needs to be corrected based on the detection result of the orientation detection device 12, a corresponding orientation correction device is operated under the control of the control unit 60. The bag 90 is rotated by 13 (especially the rotating part 52) to correct the orientation of the bag 90. As shown in FIG.

That is, when it is necessary to correct the orientation of the bag 90 conveyed along the first conveying line 15a and the third conveying line 15c, the first orientation correcting device 13a and the third orientation correcting device 13c move the bag from the third conveying area P3 to the third conveying area P3. 4 While being transported to the conveying area P4 (that is, while being sucked and held in the air by the corresponding orientation-changing suction cups 51), the rotation part 52 is rotated so that the bag 90 rotates 180 degrees together with the orientation-changing suction cups 51. Let me.

Similarly, when it is necessary to correct the orientation of the bags 90 conveyed along the second conveying line 15b and the fourth conveying line 15d, the second orientation correcting device 13b and the fourth orientation correcting device 13d are used to correct the orientation of the bag 90 in the fourth conveying area P4. to the fifth conveying area P5 (that is, while being sucked and held in the air by the corresponding orientation-changing suction cups 51), the rotation part 52 is rotated so that the bag 90 is moved 180 together with the orientation-changing suction cups 51. rotated by degrees.

In the example shown in FIGS. 7 and 8, it is determined that the bag 90 sucked and held by the orientation changing suction cups 51 of the first orientation correcting device 13a and the third orientation correcting device 13c does not need to be corrected. It is transferred from the third transfer area P3 to the fourth transfer area P4 without being rotated by the rotating section 52 . On the other hand, the bag 90 sucked and held by the orientation changing suction cups 51 of the second orientation correcting device 13b and the fourth orientation correcting device 13d is judged to require orientation correction, and is transferred from the third conveying area P3 to the fourth conveying area P3. The orientation of the bag 90 is corrected by being rotated 180 degrees by the corresponding rotating portion 52 while being transferred to the area P4.

After that, as shown in FIG. 9, with each reciprocating drive link 54 arranged in the second swing posture position, the amount of downward projection of the projecting rod of the take-out expansion/contraction section 56 of each bag take-out device 38 is increased. , the bag 90 held by the extraction sucker 50 is brought close to or placed on the portion of the conveyor section 43 corresponding to the third conveying area P3. In addition, the amount of downward protrusion of the protruding rods of the corrective expansion/contraction portions 57 of the first orientation correcting device 13a and the third orientation correcting device 13c is increased, and the bags 90 held by the orientation changing suction cups 51 are moved to the fourth conveyor portion 43 of the conveyor portion 43. It is brought close to or placed on the part corresponding to the transport area P4. In addition, the amount of downward protrusion of the protruding rods of the corrective expansion/contraction portions 57 of the second orientation correcting device 13b and the fourth orientation correcting device 13d is increased, and the bags 90 held by the orientation changing suction cups 51 are moved from the fifth orientation correcting device 13b and the fourth orientation correcting device 13d to the fifth orientation corrector 43. It is brought close to or placed on the part corresponding to the transport area P5.

After that, each take-out suction cup 50 releases the corresponding bag 90 from holding by suction while the corresponding bag 90 is arranged in the third conveying area P3. As a result, the bag 90 is transferred from the bag takeout device 38 to the conveyor section 43 in the third transfer area P3 of each transfer line 15 . Also, the orientation changing suction cups 51 of the first orientation correcting device 13a and the third orientation correcting device 13c release the corresponding bag 90 from suction holding while the corresponding bag 90 is arranged in the fourth conveying area P4. As a result, the bag 90 is transferred from the first orientation correcting device 13a and the third orientation correcting device 13c to the conveyor section 43 in the fourth conveying area P4 of the first conveying line 15a and the third conveying line 15c. Also, the orientation changing suction cups 51 of the second orientation correcting device 13b and the fourth orientation correcting device 13d release the corresponding bag 90 from suction holding while the corresponding bag 90 is arranged in the fifth conveying area P5. As a result, the bags 90 are transferred from the second orientation correcting device 13b and the fourth orientation correcting device 13d to the conveyor section 43 in the fifth conveying area P5 of the second conveying line 15b and the fourth conveying line 15d.

After all the extraction suction cups 50 and all the orientation changing suction cups 51 are released from the suction holding, each reciprocating drive link 54 is swung from the second swing posture position (see FIG. 9) under the drive of the reciprocating drive section 41. and placed in the first swing posture position (see FIG. 6).

As described above, the bag 90 is air-transferred from the third conveying area P3 to the fourth conveying area P4 of the first conveying line 15a and the third conveying line 15c by the first orientation correcting device 13a and the third orientation correcting device 13c. Meanwhile, the bag 90 is transferred from the third transfer area P3 of the second transfer line 15b and the fourth transfer line 15d to the fourth transfer area P4 by the conveyor section 43. As shown in FIG. That is, the bag 90 positioned on the conveyor section 43 in the third conveying area P3 of the second conveying line 15b and the fourth conveying line 15d is placed on the conveyer section 43 (the two corresponding movable stoppers 45 are opened). It is transported to the fourth transport area P4 by the conveyor section 43 while being placed on the endless string belt.

Further, while the bag 90 is air-transferred from the fourth conveying area P4 to the fifth conveying area P5 of the second conveying line 15b and the fourth conveying line 15d by the second orientation correcting device 13b and the fourth orientation correcting device 13d, the conveyer portion 43 transfers the bag 90 from the fourth conveying area P4 of the first conveying line 15a and the third conveying line 15c to the fifth conveying area P5. That is, the bag 90 positioned on the conveyor section 43 in the fourth conveying area P4 of the first conveying line 15a and the third conveying line 15c remains placed on the conveyer section 43 with the corresponding movable stopper 45 opened. , is transferred to the fifth transfer area P5 by the conveyor unit 43 .

As described above, during the time each reciprocating drive link 54 moves from the first swing attitude position to the second swing attitude position and then returns from the second swing attitude position to the first swing attitude position, the second transport link 54 moves from the second swing attitude position to the first swing attitude position. Each of the bags 90 located in the area P2 to the fourth conveying area P4 is sent downstream by one conveying area in the forward conveying direction (X direction).

Moreover, before the transportation of the bags 90 from the fourth transportation area P4 to the fifth transportation area P5 of each transportation line 15 is completed, the bag 90 located on the conveyor section 43 in the fifth transportation area P5 of each transportation line 15 is transported from the fifth transport area P5 to the sixth transport area P6 by the conveyor part 43 while being placed on the conveyor part 43 with the corresponding movable stopper 45 opened.

Before a new bag 90 is placed in the sixth transport area P6 of each transport line 15 (preferably while the conveyor section 43 is intermittently stopped), the bags 90 placed in the sixth transport area P6 of each transport line 15 ), held by the bag delivery unit 47 and delivered to the bag receiving device 48 .

By repeating the series of processes described above, each bag 90 is intermittently sent downstream from the second conveying area P2.

As described above, the conveying system 10 of the present embodiment includes a plurality of conveying lines 15 extending in the conveying direction (X direction) and positioned adjacent to each other in a direction (Y direction) perpendicular to the conveying direction, and a plurality of bags. 90 along each of the plurality of transfer lines 15 (the bag bundle pushing device 25, the bag take-out device 38, the orientation correcting device 13, the conveyor section 43, and the bag delivery section 47); An orientation detection device 12 for detecting the orientation, and an orientation correction device 13 for correcting the orientation of the plurality of bags 90 conveyed along the plurality of conveyance lines 15 according to the detection result of the orientation detection device 12 . and a position where the orientation correcting device 13 corrects the orientation of the bag 90 conveyed along one of the two conveying lines 15 (the first conveying line 15a and the third conveying line 15c) positioned adjacent to each other; The position at which the orientation correcting device 13 corrects the orientation of the bag 90 conveyed along the other (the second conveying line 15b and the fourth conveying line 15d) is at least one of the conveying direction and the height direction. It is shifted in the direction (in this example, the transport direction (X direction)).

As a result, the plurality of bags 90 conveyed along the plurality of conveying lines 15 can be appropriately rotated and oriented as necessary while suppressing an increase in the interval between the conveying lines 15. be.

A plurality of orientation correcting devices 13 are provided corresponding to each of the plurality of conveying lines 15, and each of the plurality of orientation correcting devices 13 corrects the orientation of the bag 90 while transferring the bag 90 in the conveying direction.

As a result, each bag 90 can be efficiently transported in the transport direction, and a decrease in transport efficiency of the bags 90 due to correcting the orientation of the bags 90 can be effectively suppressed.

Also, the plurality of orientation correction devices 13 are integrally provided and reciprocate together along the transport direction.

Thereby, the configuration of the drive system of the orientation correction device 13 can be simplified.

By using two endless string belts as the conveyor part 43, the space between the string belts can be used for various purposes. For example, a sensor capable of detecting the presence or absence of the bag 90 on the string belt through the space between the string belts may be provided between each conveying area and/or between the conveying areas. It is also possible to install a moving part that can move through the space between the string belts. For example, when the bags 90 are released from the extraction suction cups 50, by arranging the moving parts that can move up and down at the elevated position directly below the extraction suction cups 50, the free fall distance of the bags 90 from the extraction suction cups 50 can be reduced. . Similarly, when the bag 90 is released from each direction-changing sucker 51, the movable part that can be lifted and lowered is raised and placed in the raised position immediately below each direction-changing sucker 51, so that the bag 90 from each direction-changing sucker 51 is released. can reduce the free fall distance of Further, when holding the bag 90 on each orientation changing sucker 51 , the up-and-down moving portion may be raised to press the bag 90 on the moving portion against the orientation changing sucker 51 .

[First modification]
FIG. 10 is a diagram showing a transport system 10 according to a first modified example. In this modified example, the same reference numerals are given to the same or corresponding elements as in the above-described embodiment, and detailed description thereof will be omitted.

The position for correcting the orientation of the bags 90 between two adjacent transport lines 15 is shifted in the transport direction (X direction) in the above-described embodiment, but may be shifted in the height direction (Z direction). good.

In the example shown in FIG. 10, the bags 90 placed on the conveyor section 43 in the third transport area P3 of the first transport line 15a and the third transport line 15c are conveyed by the first orientation correcting device 13a and the third orientation correcting device. By being lifted by 13c and rotated at a relatively high position (first height position), the orientation is corrected.

On the other hand, the bag 90 placed on the conveyor section 43 in the third conveying area P3 of the second conveying line 15b and the fourth conveying line 15d is lifted by the second orientation correcting device 13b and the fourth orientation correcting device 13d. The orientation is corrected by being rotated at a relatively low position (second height position lower than the first height position).

The configuration and arrangement of the first orientation correction device 13a to the fourth orientation correction device 13d are not limited. In particular, the method of lifting and rotating the bag 90 by the first to fourth orientation correcting devices 13a to 13d is not limited, and for example, the orientation changing suction cups 51 and rotating portion 52 described above may be used.

The first orientation correction device 13a and the third orientation correction device 13c shown in FIG. On the other hand, the second orientation correction device 13b and the fourth orientation correction device 13d shown in FIG. However, the target bag 90 may be lifted while all of the first orientation correcting device 13a to the fourth orientation correcting device 13d are arranged at a position higher than the target bag 90, or may be lower than the target bag 90. The target bag 90 may be lifted while in position.

According to this modification, the plurality of bags 90 conveyed along the plurality of conveying lines 15 can be reduced while suppressing not only the Y-direction spacing between the conveying lines 15 but also the increase in the X-direction length of each conveying line 15. If necessary, it can be rotated to correct its orientation.

[Second modification]
FIG. 11 is a diagram showing a method of correcting the orientation of the bag 90 according to the second modified example. In this modified example, the same reference numerals are given to elements that are the same as or correspond to those of the above-described embodiment and the first embodiment, and detailed description thereof will be omitted.

In the above-described embodiment, the orientation of the bag 90 is corrected by rotating the bag 90 180 degrees about the vertical axis with the front and back surfaces of the bag 90 facing up and down. On the other hand, in this modification, the bag 90 is rotated 180 degrees around a horizontal axis (rotational axis Hx) passing through the bag 90 with the front and back surfaces of the bag 90 oriented horizontally. direction is corrected.

In the example shown in FIG. 11, the bag 90 in the lying posture conveyed along each conveying line 15 is conveyed in the conveying direction (X direction) is rotated 90 degrees around the transport axis Ax. As a result, the posture of the bag 90 is changed from the lying posture to the standing posture.

The conveying axis Ax is an axis passing through the bag 90 conveyed in at least the third conveying area P3, the fourth conveying area P4 and the fifth conveying area P5.

While the bag 90 is being conveyed from the fourth conveying area P4 to the fifth conveying area P5 by the conveying device 11, the orientation correcting device 13 rotates the bag 90 180 degrees around the rotation axis Hx that horizontally passes through the center of the bag 90. The orientation of the bag 90 is corrected.

In the example shown in FIG. 11, in the fourth transport area P4, the top portion 92 is located on the reverse transport direction side (third transport area P3 side) and the bottom portion 93 is located on the forward transport direction side (fifth transport area P5 side). The bag 90 is rotated around the rotation axis Hx while being transported from the fourth transport area P4 to the fifth transport area P5. As a result, the bag 90 is placed in a state where the top portion 92 is located on the forward transport direction side and the bottom portion 93 is located on the reverse transport direction side in the fifth transport area P5.

As described above, the transport system 10 of this modification includes a plurality of transport lines 15 extending in the transport direction (X direction) and positioned adjacent to each other in a direction (Y direction) perpendicular to the transport direction, and a plurality of bags. 90 along each of a plurality of transportation lines 15, an orientation detection device 12 that detects the orientation of the plurality of bags 90, and a plurality of transportation lines 15 according to the detection results of the orientation detection device 12. and an orientation correcting device 13 for correcting the orientation of the plurality of bags 90 conveyed along the direction of the bag 90. The orientation correcting device 13 rotates the bags 90 to be oriented about the conveying axis Ax extending in the conveying direction. Then, the user is placed in a corrected posture (standing posture), and the orientation is corrected by the orientation correcting device 13 in the corrected posture.

Thereby, it is possible to rotate the plurality of bags 90 conveyed along the plurality of conveying lines 15 while suppressing an increase in the Y-direction spacing between the conveying lines 15 .

Note that in the above example, the bag 90 is rotated 90 degrees about the transport axis Ax prior to being oriented. ) may be rotated. Also, the bag 90 does not necessarily have to be rotated about the transport axis Ax, and may take any desired posture, such as a tilted position or a standing position, from the lying position. For example, the bag 90 is rotated about the tilt axis in a tilted posture in which the tilt axis extending in a direction tilted with respect to both the horizontal direction and the vertical direction vertically penetrates the front surface and the back surface of the bag 90. It may be reoriented by being

[Other Modifications]
In the above-described embodiment, in order to convey the bag 90 from the third conveying area P3 to the fifth conveying area P5 on each conveying line 15, the aerial conveying by the orientation correcting device 13 and the horizontal conveying by the conveyor section 43 are combined. However, each bag 90 may be conveyed from the third conveying area P3 to the fifth conveying area P5 only by aerial conveying. In this case, installation of the conveyor section 43 for conveying the bag 90 from the third conveying area P3 to the fifth conveying area P5 is unnecessary.

For example, the reciprocating support plate 53 may be provided with a sucker device (not shown) along with the direction changing sucker 51 for each transfer line 15 . As an example, the bag 90 conveyed along the first conveying line 15a and the third conveying line 15c is conveyed in the air from the third conveying area P3 to the fourth conveying area P4 while being held by the direction changing suction cups 51. , and may be transported in the air from the fourth transport area P4 to the fifth transport area P5 while being held by a suction device. On the other hand, the bag 90 conveyed along the second conveying line 15b and the fourth conveying line 15d is conveyed in the air from the third conveying area P3 to the fourth conveying area P4 while being held by the suction cup device. It may be conveyed in the air from the conveying area P4 to the fifth conveying area P5 while being held by the direction changing suction cups 51 .

In the above-described embodiment, the reciprocating unit 40 reciprocates in the transport direction by using a parallel link mechanism using the reciprocating drive link 54. may be provided reciprocably along the .

Further, each bag take-out device 38 and each orientation correction device 13 of the above-described embodiment has an expansion/contraction section (extraction expansion/contraction section 56 and corrective expansion/contraction section 57) having a portion that expands and contracts in the height direction. However, each bag take-out device 38 and each orientation corrector 13 are moved in the height direction by a parallel link mechanism, a parallel link mechanism, or other mechanism that reciprocates each bag take-out device 38 and each orientation corrector 13 along the conveying direction. If a sufficient amount of movement is possible, such extensions may not be provided.

For example, in a state where the parallel link mechanism (reciprocating drive link 54) is arranged at the first swing posture position, the take-out sucker 50 of each bag take-out device 38 moves the surface (exposed surface) of the bag 90 on the second placing table 32. , the orientation changing suction cups 51 of the first orientation correcting device 13a and the third orientation correcting device 13c contact the surface of the bag 90 on the conveyor support section 42 (the third conveying area P3), and the second orientation correcting device 13b And the orientation changing sucker 51 of the fourth orientation correction device 13d may contact the surface of the bag 90 on the conveyor support section 42 (fourth conveying area P4). Also, in the state where the parallel link mechanism is arranged in the second swing posture position, the bag 90 held by the take-out sucker 50 of each bag take-out device 38 is near the conveyor support section 42 (third conveying area P3) or is supported by the conveyor. The bag 90 positioned on the section 42 (third conveying area P3) and held by the orientation changing suction cups 51 of the first orientation correcting device 13a and the third orientation correcting device 13c is placed on the conveyor support section 42 (fourth conveying area P4). A bag 90 positioned near or on the conveyor support section 42 (fourth conveying area P4) and held by the orientation changing suction cups 51 of the second orientation correcting device 13b and the fourth orientation correcting device 13d reaches the conveyor support section 42 (fifth conveying area P4). area P5) or on the conveyor support 42 (fifth transport area P5). If these conditions are satisfied, each bag take-out device 38 and each orientation correction device 13 may not have an elastic portion (the removal elastic portion 56 and the correction elastic portion 57).

Further, in the above-described embodiment, the corresponding orientation detection device 12 is individually provided for each transfer line 15, but one orientation detection device 12 is provided for two or more transfer lines 15 (for example, all transfer lines 15). may be For example, when the orientation detection device 12 includes an imaging device, one orientation detection device 12 images target bags 90 (for example, target bags 90 located in the second transport area P2) on all of the transport lines 15, and controls. The direction of the target bag 90 on each transport line 15 may be individually detected by the unit 60 analyzing the captured image.

Also, in the above-described embodiment, the orientation detection device 12 detects the orientation of the bag 90 in the second conveying area P2, but the orientation of the bag 90 may be detected in another position. The orientation detection device 12 may detect the orientation of the bag 90 at any position upstream of the position where the orientation of the bag 90 is corrected.

In the above-described embodiment, the reciprocating drive link 54 is driven by the reciprocating drive unit 41 (that is, the bag take-out device 38 and the orientation correcting device 13 are driven to reciprocate), and suction is performed by the take-out suction cups 50 and the orientation changing suction cups 51. Operation execution drive and suction operation stop drive (negative pressure release drive), open/close operation drive of the movable stopper 45, travel drive of the conveyor unit 43 by the conveyor drive unit 44, and operation drive of the bag transfer unit 47 are controlled by the control unit 60. It is performed in a predetermined and constant rhythm without being controlled by However, one or more of these drives may be adaptively performed under control of the controller 60 . For example, by determining the timing of two or more of these drives based on the clock signal emitted from the control unit 60, the two or more drives can be properly correlated.

Further, each movable stopper 45 can be opened and closed by any method. For example, each movable stopper 45 may be opened and closed under the control of the control unit 60 according to the detection result of a sensor that detects the presence or absence of the bag 90 moving directly under each movable stopper 45 in the open state. In addition, each movable stopper is controlled by the control unit 60 according to the driving state and/or arrangement state of the reciprocating drive unit 41 (that is, the driving state and/or arrangement state of each bag take-out device 38 and each orientation correction device 13). Opening and closing of 45 may be performed.

In the above-described embodiment, not only the bags 90 that need to be oriented, but also the bags 90 that do not need to be oriented are held by the orientation correcting device 13 (orientation changing suction cups 51) and conveyed in the air. Bags 90 that do not need to be corrected may be conveyed in the conveying direction by the conveyer section 43 instead of the orientation correction device 13 . For example, the control unit 60 may control the target orientation-changing suckers 51 so that the orientation-changing suckers 51 corresponding to the bags 90 that do not need to be oriented do not perform the suction holding operation (negative pressure forming operation).

In the above-described embodiment, four transport lines 15 are provided, but the technique described above can also be applied when two, three, or five or more transport lines 15 are provided.

The present disclosure is not limited to the embodiments and variations described above. For example, various modifications may be added to each element of the above-described embodiments and modifications, and configurations may be partially or wholly combined between the above-described embodiments and modifications. Further, the effects achieved by the present disclosure are not limited to the above-described effects, and specific effects according to the specific configurations of each embodiment can also be exhibited. Thus, various additions, changes, and partial deletions can be made to each element described in the claims, specification, and drawings without departing from the technical spirit and spirit of the present disclosure.

10 conveying system 11 conveying device 12 orientation detecting device 13 orientation correcting device 13a first orientation correcting device 13b second orientation correcting device 13c third orientation correcting device 13d fourth orientation correcting device 15 conveying line 15a first transfer line, 15b second transfer line, 15c third transfer line, 15d fourth transfer line, 21 base, 25 bag bundle pushing device, 26 pushing driving section, 27 pushing section, 31 first mounting table, 31a third 1 mounting table groove 32 second mounting table 32a second mounting table groove 33 stand 34 first support block 35 second support block 36 bag detection sensor 38 bag take-out device 40 reciprocating unit 41 reciprocation Movement drive unit 42 Conveyor support unit 43 Conveyor unit 44 Conveyor drive unit 45 Movable stopper 47 Bag delivery unit 48 Bag receiving device 50 Removal sucker 51 Orientation change sucker 52 Rotating unit 53 Reciprocating support plate 54 Reciprocating drive link 56 Extraction expansion/contraction part 57 Correction expansion/contraction part 60 Control part 90 Bag 91 Bag bundle 91a Thick part 91b Thin part 92 Top part 93 Bottom part Ax Conveying axis Hx Rotation axis L Detected light, P1 1st transport area, P2 2nd transport area, P3 3rd transport area, P4 4th transport area, P5 5th transport area, P6 6th transport area

Claims (5)

a plurality of transport lines extending in the transport direction and positioned adjacent to each other in a direction perpendicular to the transport direction;
a conveying device for conveying a plurality of bags along each of the plurality of conveying lines;
an orientation detection device that detects orientations of the plurality of bags;
an orientation correcting device that corrects the orientation of the plurality of bags conveyed along the plurality of conveying lines according to the detection result of the orientation detecting device;
A position where the orientation correcting device corrects the orientation of the bag conveyed along one of the two conveying lines positioned adjacent to each other, and the orientation correcting device corrects the orientation of the bag conveyed along the other. The position to be corrected by means of the conveying system shifted in at least one of the conveying direction and the height direction. a plurality of transport lines extending in the transport direction and positioned adjacent to each other in a direction perpendicular to the transport direction;
a conveying device for conveying a plurality of bags along each of the plurality of conveying lines;
an orientation detection device that detects orientations of the plurality of bags;
an orientation correcting device that corrects the orientation of the plurality of bags conveyed along the plurality of conveying lines according to the detection result of the orientation detecting device;
A conveying system in which a bag whose orientation is to be corrected is rotated around a conveying axis extending in the conveying direction by the orientation correcting device and placed in a corrected posture, and the orientation is corrected in the corrected posture. A position for correcting the orientation of bags conveyed along one of two conveying lines adjacent to each other by the orientation correcting device, and correcting the orientation of the bags conveyed along the other by the correcting device. 3. The transport system according to claim 1 or 2, wherein the position is shifted with respect to the transport direction. a plurality of the orientation correcting devices are provided so as to correspond to each of the plurality of transfer lines;
4. The conveying system according to claim 3, wherein each of the plurality of orientation correcting devices corrects the orientation of the bag while transferring the bag in the conveying direction. 5. The conveying system of claim 4, wherein the plurality of orientation correction devices are integrally provided and reciprocate together along the conveying direction.

Images