JP7327581B2 - Goods transfer equipment - Google Patents

Description

The present invention includes a first holding section for holding an article, a second holding section for holding an article, a driving section for moving the first holding section and the second holding section, and a control section for controlling the driving section. and an article transfer facility.

The background art will be described below. In the following description, the symbols or names in parentheses are the symbols or names in the prior art documents. A conventional example of such an article transfer equipment is described in Japanese Patent Application Laid-Open No. 2018-039613 (Patent Document 1). In the article transfer equipment of Patent Document 1, the transfer device 3 is composed of a vertical multi-joint type robot having a multi-joint arm 16 and a suction pad 17 supported at the tip thereof.

JP 2018-039613 A

In the above-described article transfer equipment, the transfer device is composed of a vertical articulated robot, but such a vertical articulated robot is expensive and complicated to control. The installation cost of the article transfer equipment with is likely to be high. In addition, in order to increase the transfer efficiency of goods or to enable the transfer of various goods, it is necessary to install a plurality of vertical articulated robots or improve the capabilities of the vertical articulated robots. is required, the installation cost of the article transfer equipment tends to increase.

Therefore, it is desired to realize an article transfer facility that can reduce the installation cost.

In view of the above, the characteristic configuration of the article transfer equipment includes a first holding section for holding an article, a second holding section for holding an article, and a driving section for moving the first holding section and the second holding section. and a control unit that controls the driving unit,
With a predetermined reference direction as the Z direction, one of two directions orthogonal to each other as viewed in the Z direction as the X direction and the other as the Y direction, the driving unit guides the first holding unit in the Z direction. a first Z-axis drive unit that moves while guiding a second Z-axis drive unit that guides and moves the second holding unit in the Z direction; and a first X-axis drive unit that guides and moves the first holding unit in the X direction. a second X-axis driving portion for guiding and moving the second holding portion in the X direction; a first Y-axis driving portion for guiding and moving the first holding portion in the Y direction; a second Y-axis drive unit that moves the second holding unit while guiding it in the Y direction , and the control unit sets the condition that the size of the target article, which is the article to be transferred, is equal to or larger than a set size. and joint transfer control is selected and executed when at least one of the condition that the weight of the target article is larger than the set weight and the condition that the packaging type of the target article is bag-like is satisfied. , the condition that the size of the target product is less than the set size, the condition that the weight of the target product is equal to or less than the set weight, and the condition that the packaging type of the target product is not bag-like. If all are satisfied, independent transfer control is selected and executed, and in the independent transfer control, the first holding section and the second holding section hold different target articles, and the first The drive unit is controlled so that the holding unit and the second holding unit perform the transfer operation of the target article independently of each other, and the joint transfer control includes the first holding unit and the second holding unit. jointly hold one target article and control the driving section so as to perform the transfer operation of the target article.

According to this characteristic configuration, the first Z-axis driving section, the first X-axis driving section, and the first Y-axis driving section all have a simple configuration that guides and moves the first holding section in the linear direction. 1 The holding portion can be moved in any direction of the Z direction, the X direction, and the Y direction, and the control portion can easily perform control, and each driving portion can be configured at a low cost.
In addition to the first holding section, the first Z-axis driving section, the first X-axis driving section, and the first Y-axis driving section, the second holding section, the second Z-axis driving section, the second X-axis driving section, and the second Y-axis driving section It has a drive. Therefore, when the control unit executes the independent transfer control, the first holding unit and the second holding unit can hold different target articles and simultaneously transfer a plurality of target articles. It can be transferred efficiently. In addition, the control unit executes the joint transfer control, so that the first holding unit and the second holding unit jointly hold and transfer the target article that cannot be held by one holding unit due to its size, shape, or material. Therefore, various target articles can be transferred.
As described above, according to the present characteristic configuration, it is possible to realize a configuration capable of efficiently transferring target articles and transferring various target articles while keeping the installation cost of the article transfer equipment low. can be done.

In view of the above, the characteristic configuration of another article transfer equipment includes a first holding section that holds an article, a second holding section that holds an article, and a movement of the first holding section and the second holding section. A drive unit and a control unit that controls the drive unit,
With a predetermined reference direction as the Z direction, one of two directions orthogonal to each other as viewed in the Z direction as the X direction and the other as the Y direction, the driving unit guides the first holding unit in the Z direction. a first Z-axis drive unit that moves while guiding a second Z-axis drive unit that guides and moves the second holding unit in the Z direction; and a first X-axis drive unit that guides and moves the first holding unit in the X direction. a second X-axis driving portion for guiding and moving the second holding portion in the X direction; a first Y-axis driving portion for guiding and moving the first holding portion in the Y direction; a second Y-axis drive unit that guides and moves the second holding unit in the Y direction, wherein the control unit selectively executes independent transfer control and joint transfer control to perform the independent transfer; In the control, the first holding part and the second holding part hold different target articles that are transfer target articles, and the first holding part and the second holding part independently hold the target articles. In the joint transfer control, the first holding unit and the second holding unit jointly hold one target article, and the target article is and moves the container containing the article from a predetermined reference position toward the first side in the conveying direction, which is one side of the conveying direction intersecting the Z direction. The container has an opening that opens to a Z-direction first side, which is one side in the Z-direction, and the controller controls the independent transfer control or the joint transfer control. In control, after the target article contained in the container at the reference position is held by at least one of the first holding section and the second holding section, the target article is held. Before moving the lower end of the container to the take-out position where the lower end of the container is the first side in the Z direction from the end of the container on the first side in the Z direction, the conveying device is moved so as to convey the container to the first side in the conveying direction. While controlling, at least one of the first holding portion and the second holding portion is moved to the first side in the conveying direction until the target article reaches the take-out position, and is moved to the first side in the Z direction. The point is to control the drive unit so as to move and take out the target article from the container.

According to this characteristic configuration, the first Z-axis driving section, the first X-axis driving section, and the first Y-axis driving section all have a simple configuration that guides and moves the first holding section in the linear direction. 1 The holding portion can be moved in any direction of the Z direction, the X direction, and the Y direction, and the control portion can easily perform control, and each driving portion can be configured at a low cost.
In addition to the first holding section, the first Z-axis driving section, the first X-axis driving section, and the first Y-axis driving section, the second holding section, the second Z-axis driving section, the second X-axis driving section, and the second Y-axis driving section It has a drive. Therefore, when the control unit executes the independent transfer control, the first holding unit and the second holding unit can hold different target articles and simultaneously transfer a plurality of target articles. It can be transferred efficiently. In addition, the control unit executes the joint transfer control, so that the first holding unit and the second holding unit jointly hold and transfer the target article that cannot be held by one holding unit due to its size, shape, or material. Therefore, various target articles can be transferred.
As described above, according to the present characteristic configuration, it is possible to realize a configuration capable of efficiently transferring target articles and transferring various target articles while keeping the installation cost of the article transfer equipment low. can be done.
Furthermore, according to this characteristic configuration, after the target article housed in the container at the reference position is held by at least one of the first holding section and the second holding section and before the target article is taken out of the container In addition, by starting the transportation of the container by the transportation device, the transportation efficiency of the container can be improved as compared with the case where the transportation of the container by the transportation device is started after the target article is taken out from the container.
Further, when such a container is transported, there is a risk that the side wall of the container during movement may come into contact with the target article before it is taken out of the container. By moving at least one of the parts to the Z direction first side while moving to the transport direction first side, the target article can be taken out from the container while avoiding contact of the target article with the container.
As described above, according to this configuration, it is possible to improve the transport efficiency of the container while avoiding contact of the target article with the container.

Perspective view of goods transfer equipment Plan view of goods transfer equipment Side view of goods transfer equipment Front view of goods transfer equipment Partially enlarged perspective view of the transfer device Control block diagram Transfer control flow chart Selection control flow chart Joint transfer control flow chart Flowchart of independent transfer control Plan view showing suction operation of joint transfer control Plan view showing adsorption release operation of joint transfer control Front view showing suction operation of joint transfer control Plan view showing simultaneous pick-up operation of independent transfer control Plan view showing simultaneous adsorption release operation of independent transfer control Plan view showing sequential pick-up operation of independent transfer control Plan view showing sequential pick-up operation of independent transfer control Plan view showing sequential adsorption release operation of independent transfer control Plan view showing sequential adsorption release operation of independent transfer control A side view showing a state in which the holding unit is at the suction position in joint transfer control. A side view showing movement of the holding part from the suction position to the take-out position in joint transfer control. A side view showing a state in which the holding unit is in the suction release position in joint transfer control. The side view showing the movement of the holding part from the suction release position to the retracted position in joint transfer control. Perspective view of article transfer equipment in another embodiment (7) Side view of article transfer equipment in another embodiment (9)

1. Embodiment An embodiment of an article transfer facility will be described based on the drawings.
As shown in FIG. 1, the article transfer equipment includes a first conveying device 1 that conveys a first container C1, a second conveying device 2 that conveys a second container C2, and a first container C1 to a second container C2. and a transfer device 3 for transferring the article W to the. The configuration of the article transfer equipment will be described below. A predetermined reference direction is defined as the Z direction, and one of two directions that are orthogonal to each other in the Z direction is defined as the X direction X and the other as the Y direction. explain. Also, one side in the X direction X will be described as the X direction first side X1, and the opposite side as the X direction second side X2. Also, one side in the Y direction Y will be described as the Y direction first side Y1, and the opposite side as the Y direction second side Y2. In this embodiment, the vertical direction is the Z direction Z (reference direction), and both the X direction X and the Y direction Y are orthogonal to the Z direction Z. As shown in FIG.

As shown in FIGS. 1 and 2, the first conveying device 1 conveys the first container C1 in one direction along a prescribed conveying direction. In this embodiment, the first conveying device 1 is a conveyor device configured by a roller conveyor, and conveys the first container C1 along the X direction X to the X direction first side X1. A first position P1 is set in the middle of the transport path of the first transport device 1 . The first transport device 1 transports a first container C1 at a first position P1 from the first position P1 and transports another first container C1 to the first position P1. One or more articles W are accommodated in the first container C1 transported to the first position P1 by the first transport device 1 . In the present embodiment, the Z direction Z is aligned with the direction orthogonal to the upper surface of the placing portion 5 (the surface on which the accommodated article W is placed) in the first container C1 at the first position P1. there is Also, the first container C1 corresponds to a container for storing the article W. As shown in FIG. The first position P1 corresponds to a predetermined reference position. The X direction X corresponds to the transport direction, and the X direction first side X1 corresponds to the transport direction first side, which is one side of the transport direction crossing the Z direction Z. As shown in FIG. The first conveying device 1 corresponds to a conveying device that conveys the container from the reference position toward the first side in the conveying direction.

The second conveying device 2 conveys the second container C2 in one direction along a prescribed conveying direction. In the present embodiment, the second transport device 2 is a conveyor device configured by a roller conveyor, and transports the second container C2 along the X direction X to the X direction second side X2. A second position P<b>2 is set in the middle of the transport path of the second transport device 2 . The second transport device 2 transports the second container C2 at the second position P2 from the second position P2 and transports another second container C2 to the second position P2. The second container C2 transported to the second position P2 by the second transport device 2 does not contain any articles W, but the second container C2 transported from the second position P2 contains the goods W by the transfer device 3. An article W that has been placed is stored. The second position P2 is set at the same position as the first position P1 in the X direction X, and is set on the first side Y1 in the Y direction with respect to the first position P1.

In the article transfer equipment, a first container C1 containing articles W is conveyed to a first position P1 by a first conveying device 1, and an empty second container C2 is conveyed to a second position P2 by a second conveying device 2. be. Then, the transfer device 3 holds and takes out the articles W stored in the first container C1 at the first position P1, and stores the taken-out articles W in the second container C2 at the second position P2. The article W is transferred from the first container C1 to the second container C2 so as to release the holding of the article W later. The first container C<b>1 from which all the articles W to be taken out have been taken out is transported from the first position P<b>1 by the first transporting device 1 . Also, the second container C2 containing all the articles W to be accommodated is conveyed from the second position P2 by the second conveying device 2 .

As shown in FIG. 5, each of the first container C1 and the second container C2 has a placement portion 5 on which an article W is placed, and a side wall portion 6 erected around the placement portion 5. An opening 7 is formed by the upper end portion of the side wall portion 6 . As described above, each of the first container C1 and the second container C2 has an opening 7 that opens to the Z-direction first side Z1 (upper side), which is one side in the Z-direction. In this embodiment, the shape of the first container C1 and the second container C2 when viewed in the Z direction (the shape of the mounting portion 5) is formed in a rectangular shape. As shown in FIG. 1, the first container C1 is conveyed by the first conveying device 1 in a posture in which the lateral direction of the first container C1 is along the X direction X. As shown in FIG. Further, the second container C2 is conveyed by the second conveying device 2 in a posture in which the lateral direction of the second container C2 is along the X direction.

The articles W housed in the first container C1 are bag-shaped articles W and box-shaped articles W. As shown in FIG. In this embodiment, the bag-like article W is a highly flexible bag made of, for example, synthetic resin or paper, containing an item. The box-shaped article W is a box-shaped packaging body made of synthetic resin, paper, or the like, in which an object is contained. This package is wrapped with a sheet-like packaging material such as a synthetic resin film, if necessary.

As shown in FIG. 5, the article transfer equipment includes a first holding section 11 for holding an article W, a second holding section 12 for holding an article W, a third holding section 13 for holding an article W, an article A fourth holding portion 14 that holds W, and a driving portion 15 that moves the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 are provided. The first holding section 11 , the second holding section 12 , the third holding section 13 , the fourth holding section 14 , and the driving section 15 are provided in the transfer device 3 .

The first holding portion 11 is connected to the lower end portion of the first support 16 . The first holding part 11 has one or more suction pads 20 . In this embodiment, the first holding unit 11 includes three suction pads 20 that suck the article W from the first side Z1 in the Z direction. By being adsorbed to W, the article W is held by being adsorbed to the surface of the article W facing the Z-direction first side Z1. In this manner, the first holding section 11 is configured to approach the article W from the Z-direction first side Z1 and hold the article W. As shown in FIG. Note that the suction pad 20 corresponds to a suction portion that holds the article W by suction.

The second holding portion 12 is connected to the lower end portion of the second support 17 . The third holding portion 13 is connected to the lower end portion of the third support 18 . The fourth holding portion 14 is connected to the lower end portion of the fourth support 19 . Each of the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 includes one or a plurality of suction pads 20, similarly to the first holding portion 11, and the second holding portion 12, Both the third holding part 13 and the fourth holding part 14 are configured to approach the article W from the Z-direction first side Z1 and hold the article W. As shown in FIG.

As shown in FIGS. 1 to 4, the drive unit 15 includes a first Z-axis drive unit 21 that guides and moves the first holding unit 11 in the Z direction Z, and a second holding unit 12 that guides the second holding unit 12 in the Z direction. a second Z-axis drive unit 22 that moves while guiding the third holding unit 13 in the Z direction Z, a third Z-axis drive unit 23 that guides and moves the third holding unit 13 in the Z direction Z; and a 4Z-axis drive unit 24 .

The first Z-axis driving section 21 includes a first Z-axis guide body 27 that guides a first Z-axis moving body 26 connected to the top of the first support body 16 in the Z direction Z, and a first Z-axis moving body 26 that guides the first Z-axis moving body 26 in the Z direction. and a first Z-axis drive mechanism 28 for Z movement. In this embodiment, the first Z-axis guide body 27 is configured by a rail member installed along the Z direction Z, and the first Z-axis moving body 26 is engaged with the first Z-axis guide body 27 . Further, in this embodiment, the first Z-axis drive mechanism 28 is composed of a ball screw with which the first Z-axis moving body 26 is screwed, and an electric motor that rotates the ball screw. The first Z-axis drive mechanism 28 moves the first Z-axis moving body 26 in the Z direction Z by rotating the ball screw by driving the electric motor. The first Z-axis drive unit 21 guides and moves the first Z-axis moving body 26 in the Z direction Z by being guided by the first Z-axis guide body 27 and driven by the first Z-axis drive mechanism 28 . As a result, the first holding portion 11 moves while being guided in the Z direction.

The second Z-axis driving part 22 includes a second Z-axis guide body 32 that guides the second Z-axis moving body 31 connected to the upper part of the second support 17 in the Z direction Z, similarly to the first Z-axis driving part 21 . , and a second Z-axis driving mechanism 33 that moves the second Z-axis moving body 31 in the Z direction Z. The third Z-axis driving section 23, like the first Z-axis driving section 21, includes a third Z-axis guide body 37 that guides in the Z direction Z a third Z-axis moving body 36 connected to the top of the third support 18. , and a third Z-axis drive mechanism 38 that moves a third Z-axis moving body 36 in the Z direction Z. The fourth Z-axis driving section 24, like the first Z-axis driving section 21, includes a fourth Z-axis guide body 42 that guides the fourth Z-axis moving body 41 connected to the top of the fourth support 19 in the Z direction Z. , and a fourth Z-axis drive mechanism 43 that moves the fourth Z-axis moving body 41 in the Z direction Z.

The drive unit 15 further includes a first Y-axis drive unit 46 that guides and moves the first holding unit 11 in the Y direction Y, and a second Y-axis drive unit that guides and moves the second holding unit 12 in the Y direction. 47, a third Y-axis drive unit 48 that guides and moves the third holding unit 13 in the Y direction Y, and a fourth Y-axis drive unit 49 that guides and moves the fourth holding unit 14 in the Y direction Y. I have.

The first Y-axis driving unit 46 includes a first Y-axis guide body 52 that guides a first Y-axis moving body 51 connected to the lower part of the first Z-axis guide body 27 in the Y direction, and a first Y-axis moving body 51 that moves in the Y direction. and a first Y-axis driving mechanism 53 (see FIG. 1) that moves in the Y direction. In this embodiment, the first Y-axis guide body 52 is configured by a rail member installed along the Y direction Y, and the first Y-axis moving body 51 is engaged with the first Y-axis guide body 52 . Further, in this embodiment, the first Z-axis drive mechanism 28 is composed of a ball screw with which the first Y-axis moving body 51 is screwed, and an electric motor that rotates the ball screw. The first Y-axis driving unit 46 guides and moves the first Y-axis moving body 51 along the Y direction Y by being guided by the first Y-axis guide body 52 and driven by the first Y-axis driving mechanism 53 . As a result, the second holding portion 12 moves while being guided in the Y direction.

The second Y-axis driving part 47, like the first Y-axis driving part 46, is a second Y-axis guide body 57 that guides the second Y-axis moving body 56 connected to the lower part of the second Z-axis guide body 32 in the Y direction Y. and a second Y-axis driving mechanism 58 (see FIG. 1) that moves the second Y-axis moving body 56 in the Y direction. The third Y-axis driving portion 48, like the first Y-axis driving portion 46, has a first Y-axis guide body 52 that guides in the Y direction Y a third Y-axis moving body 61 connected to the lower part of the third Z-axis guide body 37. and a third Y-axis driving mechanism 63 (see FIG. 1) that moves the third Y-axis moving body 61 in the Y direction. The first Y-axis guide body 52 is shared by the first Y-axis driving section 46 and the third Y-axis driving section 48 . The fourth Y-axis driving part 49, like the first Y-axis driving part 46, is a second Y-axis guide body 57 that guides in the Y direction Y a fourth Y-axis moving body 66 connected to the lower part of the fourth Z-axis guide body 42. and a fourth Y-axis driving mechanism 68 (see FIG. 1) for moving the fourth Y-axis moving body 66 in the Y direction. The second Y-axis guide body 57 is shared by the second Y-axis driving section 47 and the fourth Y-axis driving section 49 .

As shown in FIGS. 1 and 2, the drive unit 15 further includes a first X-axis drive unit 71 that guides and moves the first holding unit 11 in the X direction X, and a second holding unit 12 that moves in the X direction X. A second X-axis drive unit 72 that guides and moves a third X-axis drive unit 73 that guides and moves the third holding unit 13 in the X direction X, and a fourth holding unit 14 that guides and moves in the X direction X. and a fourth X-axis drive unit 74 that causes the

The first X-axis driving section 71 includes a first X-axis guide body 77 that guides in the X direction X a first X-axis moving body 76 that is connected to a portion of the first Y-axis guide body 52 on the Y-direction second side Y2; A second X-axis guide body 79 that guides in the X direction X a second X-axis moving body 78 (see FIG. 2) connected to a portion of the Y-direction first side Y1 of the 1Y-axis guide body 52, and a first X-axis moving body. 76 in the X direction X, and a second X-axis drive mechanism 81 that moves the second X-axis moving body 78 in the X direction X. The third X-axis drive section 73 includes a first X-axis guide body 77 , a second X-axis guide body 79 , a first X-axis drive mechanism 80 and a second X-axis drive mechanism 81 . That is, the first X-axis guide body 77 and the second X-axis guide body 79 are shared by the first X-axis drive section 71 and the third X-axis drive section 73 . Further, the first X-axis driving mechanism 80 and the second X-axis driving mechanism 81 are shared by the first X-axis driving section 71 and the third X-axis driving section 73 .

In this embodiment, each of the first X-axis guide body 77 and the second X-axis guide body 79 is configured by a rail member installed along the X direction X, and the first X-axis moving body 76 is configured by the first X-axis guide body. A second X-axis mover 78 engages a second X-axis guide 79 . Further, in this embodiment, the first X-axis drive mechanism 80 is composed of a ball screw with which the first X-axis moving body 76 is screwed, and an electric motor that rotates the ball screw. The second X-axis drive mechanism 81 is composed of a ball screw with which the second X-axis moving body 78 is screwed, and an electric motor that rotates the ball screw. The first X-axis driving section 71 and the third X-axis driving section 73, which are shared with each other, move the first X-axis moving body 76 in the X direction X by being guided by the first X-axis guide body 77 and driven by the first X-axis driving mechanism 80. The second X-axis moving body 78 is guided and moved along the X-direction X by the guidance of the second X-axis guide body 79 and the driving of the second X-axis drive mechanism 81 . As a result, the first holding portion 11 and the third holding portion 13 move while being guided in the X direction X. As shown in FIG.

Like the first X-axis driving part 71, the second X-axis driving part 72 guides in the X direction X the third X-axis moving body 83 connected to the portion of the second Y-axis guide body 57 on the Y-direction second side Y2. a first X-axis guide body 77 that guides the second Y-axis guide body 57 on the first side Y1 in the Y direction; A third X-axis driving mechanism 85 that moves the third X-axis moving body 83 in the X direction X, and a fourth X-axis driving mechanism 86 that moves the fourth X-axis moving body 84 in the X direction X are provided. The fourth X-axis drive section 74 includes a first X-axis guide body 77 , a second X-axis guide body 79 , a third X-axis drive mechanism 85 and a fourth X-axis drive mechanism 86 . That is, the first X-axis guide body 77 and the second X-axis guide body 79 are shared by the first X-axis drive section 71 and the third X-axis drive section 73. It is also used as the shaft driving portion 74 . Further, the third X-axis drive mechanism 85 and the fourth X-axis drive mechanism 86 are shared by the second X-axis drive section 72 and the fourth X-axis drive section 74 .

In this embodiment, the third X-axis moving body 83 is engaged with the first X-axis guide body 77 and the fourth X-axis moving body 84 is engaged with the second X-axis guide body 79 . In this embodiment, the third X-axis drive mechanism 85 is composed of a ball screw with which the third X-axis moving body 83 is screwed, and an electric motor that rotates the ball screw. The fourth X-axis drive mechanism 86 is composed of a ball screw with which the fourth X-axis moving body 84 is screwed, and an electric motor that rotates the ball screw. The second X-axis driving section 72 and the fourth X-axis driving section 74, which are shared with each other, move the third X-axis moving body 83 in the X direction X by being guided by the first X-axis guide body 77 and driven by the third X-axis driving mechanism 85. The fourth X-axis moving body 84 is guided and moved along the X-direction X by the guidance of the second X-axis guide body 79 and the driving of the fourth X-axis drive mechanism 86 . As a result, the second holding portion 12 and the fourth holding portion 14 move while being guided in the X direction X. As shown in FIG.

As shown in FIG. 1 and FIG. 6, which is a control block diagram, the article transfer equipment includes a first imaging device 89 and a second imaging device 90 . The first imaging device 89 is installed above the upper end of the first container C1 at the first position P1, and the first container C1 at the first position P1 and the article W stored in the first container C1. is installed so that it can be imaged. The second imaging device 90 is installed above the upper end of the second container C2 at the second position P2, and the second container C2 at the second position P2 and the articles W stored in the second container C2. is installed so that it can be imaged.

As shown in FIG. 6 , the article transfer equipment includes a control device H that controls the first transfer device 1 , the second transfer device 2 and the transfer device 3 . Based on the imaging information transmitted from the first imaging device 89, the control device H determines the position and orientation of the first container C1 at the first position P1 and the orientation of the articles W contained in the first container C1. Recognize position and posture. In addition, based on the imaging information transmitted from the second imaging device 90, the control device H determines the position and orientation of the second container C2 at the second position P2 and the articles contained in the second container C2. Recognize W's position and pose. The control device H selectively executes independent transfer control and joint transfer control according to at least one of the size, shape, and material of the target article WT, which is the article W to be transferred. Note that the control device H corresponds to a control section that controls the driving section 15 .

Articles W are assigned different article codes for each type. The control device H stores an article code and article information in association with each other. The article information is information indicating the size (length, width, height), weight, type of package (bag-like or box-like package), center-of-gravity position, and the like of the article W. FIG. The control device H acquires order information indicating the types and quantities of articles W to be shipped to each of a plurality of shipping destinations. The order information includes code information indicating a product code set for each type of product W, and quantity information indicating the number of products W of the type corresponding to each product code indicated by the code information. is

As shown in the flowchart of FIG. 7, the control device H executes the selection control (S1) to select the independent transfer control or the joint transfer control. If (S2: Yes), joint transfer control is executed (S3), and if independent transfer control is selected (S3: No), independent transfer control is executed (S4).

As shown in the selection flowchart of FIG. 8, in the selection control, it is determined whether the target item WT is a small item, a medium item, or a large item based on the order information. If there is (S11: Yes), joint transfer control is selected (S12), and if the target article WT is a small article (S11: No, S13: No), independent transfer control is selected (S14). . In addition, in the selection control, when the target article WT is a middle article (S11: No, S13: Yes) and the weight of the target article WT is larger than the set weight (S15: Yes), the packaging type of the target article WT is bag-shaped (S16: Yes), joint transfer control is selected, and if none of these conditions are met (S15: No, S16: No), independent transfer control is selected. In this manner, the control device H selectively executes either the independent transfer control or the cooperative transfer control according to the size, shape, weight, and packaging type of the target article WT.

As an example, an article W whose surface area facing the first side Z1 in the Z direction is greater than the first set value is defined as a large article, and an article W whose surface area facing the first side Z1 in the Z direction is less than the second set value is defined as a large article. , an article W having a surface facing the Z-direction first side Z1 whose area is less than the first set value and equal to or greater than the second set value can be set as a medium article. In addition, the surface facing the Z-direction first side Z1 of the medium-sized article and the large-sized article is held by the four holding sections, namely, the first holding section 11, the second holding section 12, the third holding section 13, and the fourth holding section 14. It has a size and shape that can be held at the same time.

In joint transfer control, the first holding unit 11, the second holding unit 12, the third holding unit 13, and the fourth holding unit 14 jointly hold one target article WT, and transfer the target article WT. It controls the drive unit 15 to operate. In the joint transfer control, the driving unit 11, the second holding unit 12, the third holding unit 13, and the fourth holding unit 14 hold different positions on the outer edge of the target article WT. 15 is controlled. In this manner, in the joint transfer control, the first holding unit 11 and the second holding unit 12 jointly hold one target article WT, and the drive unit 15 performs the transfer operation of the target article WT. to control. In joint transfer control, as shown in FIGS. 11 and 12, when the center of gravity G of the target article WT is located between the first holding portion 11 and the second holding portion 12 in the Z direction Z view, The drive unit 15 is controlled to hold the target article WT. In joint transfer control, the drive unit 15 is controlled so that the first holding unit 11 and the second holding unit 12 hold different positions on the outer edge of the target article WT.

As shown in the flowchart of FIG. 9, in the joint transfer control, joint simultaneous suction control is executed (S31), and then joint simultaneous suction release control is executed (S32).
Joint simultaneous adsorption control, as shown in FIG. After moving in the Z direction Z to a position overlapping with one target article WT stored in the first container C1 at the first position P1, the four holding parts are moved in the Z direction to the suction positions where they contact the target article WT. One target article WT is held by the four holders by moving it to the second side Z2. The drive unit 15 is controlled so as to move to the take-out position on the first direction side Z1.
In the joint simultaneous adsorption release control, as shown in FIG. 12, the four holding parts are moved to positions overlapping in the Z direction Z with respect to the accommodation position in the second container C2 at the second position P2, and then held. The four holding parts are moved to the second side Z2 in the Z direction until the suction release position where the target article WT in the second container C2 approaches or touches the placing part 5 of the second container C2, and the four holding parts hold one target article WT. is released, and then the lower ends of the four holding portions move from the end of the side wall portion 6 of the first container C1 on the Z-direction first side Z1 to the avoidance position on the Z-direction first side Z1. 15 is controlled.

As described above, one target article WT is held by the target holding sections while the four holding sections are moved to the Z-direction second side Z2 until they come into contact with the target article WT. Therefore, as shown in FIG. 13, when the surface facing the Z-direction first side Z1 of the target article WT is different from the flat surfaces along the X-direction X and the Y-direction Y, the four corners of the target article WT when holding the target article WT are different. Some or all of the positions (suction positions) of the two holding parts may differ from each other in the Z direction Z.
That is, in the joint transfer control, when the surface facing the Z-direction first side Z1 of the target article WT is a flat surface along the direction orthogonal to the Z-direction Z (X-direction X and Y-direction Y), The target article WT is held in a state in which the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 are positioned at the same position in the Z direction. However, in the joint transfer control, the surface facing the Z-direction first side Z1 of the target article WT has a different shape from the flat surface along the direction orthogonal to the Z-direction Z (X-direction X and Y-direction Y). In this case, the target article WT is held in a state in which the positions in the Z direction Z of part or all of the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 are changed. .

For example, as shown in FIG. 13, the surface of the target article WT facing the Z-direction first side Z1 is inclined only in the X-direction X with respect to the direction orthogonal to the Z-direction Z, and is not inclined in the Y-direction. Sometimes.
In such a case, the target article WT is held at different positions in the Z direction Z between the first holding part 11 and the second holding part 12 and at different positions in the Z direction Z between the third holding part 13 and the fourth holding part 14 . However, the first holding part 11 and the third holding part 13 hold the target article WT at the same position in the Z direction Z, and the second holding part 12 and the fourth holding part 14 hold the target article WT at the same position in the Z direction Z. will be retained.

In the independent transfer control, when there are four target articles WT to be transferred at the same time, the first holding section 11, the second holding section 12, the third holding section 13, and the fourth holding section 14 are used to transfer different target articles WT. The drive unit 15 is controlled so that the first holding unit 11, the second holding unit 12, the third holding unit 13, and the fourth holding unit 14 perform the transfer operation of the target article WT independently of each other. In the independent transfer control, when the number of target articles WT to be transferred at the same time is one or more and three or less, The drive unit 15 is controlled so that some of the holding units hold different target articles WT and some of the holding units perform the transfer operation of the target articles WT. Thus, in the independent transfer control, the first holding unit 11 and the second holding unit 12 hold different target articles WT, and the first holding unit 11 and the second holding unit 12 independently hold the target articles WT. The drive unit 15 is controlled to perform the WT transfer operation.

As shown in the flowchart of FIG. 10, in the independent transfer control, when the holding unit that holds the target article WT can simultaneously hold the target article WT (S41: Yes, state shown in FIG. 14), the independent simultaneous pickup control is performed. (S42), and if the holding unit that holds the target article WT cannot simultaneously hold the target article WT (S41: No, the state shown in FIGS. 16 and 17), the independent sequential suction control is executed ( S43). In the independent transfer control, when the holding units that release the holding of the target article WT can release the holding at the same time (S44: Yes, state shown in FIG. 15), the independent simultaneous adsorption release control is executed (S45 ), when the holding units that release the holding of the target article WT cannot release the holding at the same time (S44: No, state shown in FIGS. 18 and 19), the independent sequential suction release control is executed (S46).

The independent simultaneous adsorption control and the independent sequential adsorption control are performed by the holding portion (independent simultaneous adsorption one or a plurality of holding portions when performing control, and a plurality of holding portions when performing independent sequential adsorption control (hereinafter referred to as target holding portions) are positioned at the first position P1. After moving to a position overlapping in the Z direction Z with respect to one or a plurality of target articles WT housed in the first container C1, the target holding part is moved to the contact position where it contacts the target article WT on the second side in the Z direction. Then, the lower end of the held target article WT is moved to Z2 from the end of the first container C1 on the Z-direction first side Z1. The drive unit 15 is controlled so as to move to the take-out position on the 1st side Z1. In the independent simultaneous adsorption control, as shown in FIG. 14, one object holding unit performs the above operation, or a plurality of object holding units simultaneously perform the above operation. As indicated by 17, a plurality of object holders sequentially perform the above operations.

The independent simultaneous adsorption release control and the independent sequential adsorption release control move the object holder to a position overlapping in the Z direction Z with respect to the accommodation position in the second container C2 at the second position P2, and then move the held object. The article WT is moved to the second side Z2 in the Z direction to the suction release position where the article WT contacts the placement section 5 of the second container C2, the holding of one target article WT by the target holding section is released, and then the target holding section is moved. The drive unit 15 is controlled such that the lower end moves from the end of the side wall portion 6 of the first container C1 on the Z-direction first side Z1 to the avoidance position on the Z-direction first side Z1. In the independent simultaneous adsorption release control, as shown in FIG. 15, one object holding unit performs the above operation, or a plurality of object holding units perform the above operation at the same time. And as shown in FIG. 19, a plurality of object holders sequentially perform the above operations.

In the independent transfer control or the joint transfer control, the control device H moves the target article WT stored in the first container C1 at the first position P1 to the first holding section 11, the second holding section 12, the second holding section 12, and the After being held by at least one of the 3 holding portions 13 and the 4th holding portion 14, the first conveying device 1 is moved so as to convey the first container C1 to the X direction first side X1 (conveying direction first side). is controlled, and at least one of the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 is moved to the X direction first side X1 while moving the Z direction first The drive unit 15 is controlled so as to move to the side Z1 and take out the target article WT from the first container C1.

That is, one or a plurality of target articles WT stored in the first container C1 at the first position P1 are taken out from the first container C1 by the joint simultaneous adsorption control, the independent simultaneous adsorption control, and the independent sequential adsorption control. Thus, when all the target articles WT to be taken out from the first container C1 are taken out, after the target articles WT are held by the holding section, before the target articles WT are moved to the take-out position, the first container C1 at the first position P1 The transportation of one container C1 from the first position P1 to the first side X1 in the X direction is started. As described above, when the first container C1 is transported, and when the holding portion is moved from the suction position to the take-out position in the joint simultaneous suction control, the independent simultaneous suction control, and the independent sequential suction control, the processes shown in FIGS. As indicated by 21, the holding portion is moved to the first side X1 in the X direction while being moved to the first side Z1 in the Z direction. 20 and 21 illustrate the case of joint simultaneous adsorption control.

In the independent transfer control or the joint transfer control, the control device H moves the target article WT by at least one of the first holding section 11, the second holding section 12, the third holding section 13, and the fourth holding section 14. is held and moved to the second position P2, and after releasing the holding of the target article WT at the second position P2 and storing the target article WT in the second container C2, the second container C2 is moved to the second side in the X direction. While controlling the second conveying device 2 to convey to X2, at least one of the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14 is moved in the X direction. The drive unit 15 is controlled to move to the first side Z1 in the Z direction while moving to the second side X2 to retract the holding portion.

That is, by storing one or a plurality of target articles WT in the second container C2 at the second position P2 by joint simultaneous adsorption release control, independent simultaneous adsorption release control, and independent sequential adsorption release control, When all the target articles WT to be stored in the second container C2 are stored, after releasing the holding of the target articles WT by the holding section and before moving the holding section to the retracted position, the second container located at the second position P2 Conveyance from the second position P2 of C2 to the second side X2 in the X direction is started. In this way, when the second container C2 is transported, when the holding portion is moved from the adsorption release position to the retracted position in the joint simultaneous adsorption release control, the independent simultaneous adsorption release control, and the independent sequential adsorption release control, As shown in FIGS. 22 and 23, the holding portion is moved to the first side Z1 in the Z direction while being moved to the second side X2 in the X direction. 22 and 23 illustrate the case of joint simultaneous adsorption release control.

2. Other Embodiments Next, other embodiments of the article transfer equipment will be described.

(1) In the above-described embodiment, the article transfer equipment includes four holding portions, namely, the first holding portion 11, the second holding portion 12, the third holding portion 13, and the fourth holding portion 14, as an example. did. However, it is sufficient that the article transfer equipment has at least two holding portions, the first holding portion 11 and the second holding portion 12, and the number of holding portions provided in the article transfer equipment may be changed as appropriate. .

(2) In the above embodiment, the first holding part 11 and the second holding part 12 are provided with suction parts that hold the target article WT by suction. The configuration for holding the article WT has been described as an example. However, the configurations of the first holding portion 11 and the second holding portion 12 may be changed as appropriate. For example, one or both of the first holding part 11 and the second holding part 12 may be configured to include a gripping part that holds the target article WT by gripping.

(3) In the above embodiment, the control device H selectively executes either the independent transfer control or the cooperative transfer control according to the size, weight, and material (packaging type) of the target article WT. However, the control device H may selectively execute either the independent transfer control or the cooperative transfer control according to at least one of the size, weight, and material (packaging type) of the target article WT. Therefore, for example, according to the weight of the target article WT, as the weight of the target article WT increases, control may be performed to increase the number of holding units that hold the target article WT.

(4) In the above embodiment, the first conveying device 1 conveys the first container C1 to the first side X1 in the X direction, and the second conveying device 2 conveys the second container C2 to the second side X2 in the X direction. was described as an example.
However, the directions in which the containers are conveyed by the first conveying device 1 and the second conveying device 2 may be changed as appropriate. For example, both the first conveying device 1 and the second conveying device 2 may convey the container to the first side X1 in the X direction. Alternatively, the conveying direction of the first conveying device 1 and the conveying direction of the second conveying device 2 may intersect each other. In this case, the installation heights of the first conveying device 1 and the second conveying device 2 may be different.

(5) In the above embodiment, the transport of the first container C1 by the first transport device 1 and the movement of the first holding part 11 and the second holding part 12 from the suction position to the take-out position by the driving part 15 are carried out simultaneously. The configuration for performing the above has been described as an example. However, after the driving unit 15 moves the first holding unit 11 and the second holding unit 12 from the suction position to the take-out position, the first conveying device 1 starts conveying the first container C1 from the first position P1. In this manner, the transportation of the first container C1 by the first transportation device 1 and the movement of the first holding portion 11 and the second holding portion 12 by the driving portion 15 from the suction position to the take-out position are not performed at the same time. may Similarly, the transport of the second container C2 by the second transport device 2 and the movement of the first holding part 11 and the second holding part 12 from the suction release position to the retracted position by the driving part 15 are not performed at the same time. You may do so.

(6) In the above embodiment, an example of a configuration in which the vertical direction is the Z direction Z (reference direction) has been described. You may incline with respect to.

(7) In the above embodiment, the first holding section 11 is guided by the first Z-axis driving section 21, the first Z-axis driving section 21 is guided by the first Y-axis driving section 46, and the first Y-axis driving section 46 is guided by the first X-axis driving section 46. The second holding portion 12 is guided by the second Z-axis driving portion 22, the second Z-axis driving portion 22 is guided by the second Y-axis driving portion 47, and the second Y-axis driving portion 47 is guided by the second Y-axis driving portion 47. A case in which the shaft driving portion 47 is guided by the second X-axis driving portion 72 has been described as an example. However, the configuration of the drive unit 15 is not limited to such a configuration, and the connection relationship of the drive units on each of the X-axis, Y-axis, and Z-axis can be changed as appropriate. Further, in the above embodiment, the configuration in which the first X-axis driving section 71 and the third X-axis driving section 73 are used together, and the second X-axis driving section 72 and the fourth X-axis driving section 74 are used together has been described as an example. It is also possible to appropriately change whether any of the axes is used as a drive section or whether all of them are independent drive sections.

For example, the configuration of the drive unit 15 as shown in FIG. 24 is also suitable. In the example shown in this figure, the first holding section 11 is guided by the first Z-axis drive section 21, the first Z-axis drive section 21 is guided by the first X-axis drive section 71, and the first X-axis drive section 71 is guided by the first Y-axis drive section 71. It is configured to be guided by the drive unit 46 . The second holding portion 12 is guided by the second Z-axis driving portion 22, the second Z-axis driving portion 22 is guided by the second X-axis driving portion 72, and the second X-axis driving portion 72 is guided by the second Y-axis driving portion 47. It is configured to be Similarly, the third holding portion 13 is guided by the third Z-axis driving portion 23, the third Z-axis driving portion 23 is guided by the third X-axis driving portion 73, and the third X-axis driving portion 73 is guided by the third Y-axis driving portion 48. It is configured to be guided. Further, the fourth holding portion 14 is guided by the fourth Z-axis driving portion 24, the fourth Z-axis driving portion 24 is guided by the fourth X-axis driving portion 74, and the fourth X-axis driving portion 74 is guided by the fourth Y-axis driving portion 49. It is configured to be In the example of FIG. 24, the first Y-axis driving section 46 and the third Y-axis driving section 48 are used together, and the second Y-axis driving section 47 and the fourth Y-axis driving section 49 are used together. Further, the first X-axis driving section 71 and the third X-axis driving section 73 are used together, and the second X-axis driving section 72 and the fourth X-axis driving section 74 are also used.

(8) In the above-described embodiment, the first position P1 as a transfer target location is set in the middle of the conveying path of the conveyor device that constitutes the first conveying device 1, and the conveyor device that constitutes the second conveying device 2 is set at the first position P1. A configuration has been described as an example in which the second position P2 is set as a transfer target location in the middle of the transport path, and the transfer device 3 is installed so as to straddle these transfer target locations. However, the location to be transferred by the transfer device 3 and the installation position of the transfer device 3 with respect to the transport device may be changed as appropriate. For example, the first position P1 is set at the downstream end of the conveying route of the conveyor device that constitutes the first conveying device 1, and the second position P2 is set at the downstream end of the conveyor device that constitutes the second conveying route. They may be set and the transfer device 3 may be installed so as to straddle them. Alternatively, the conveyor device that constitutes the transport device is configured to be bent or curved, and the transfer target location is installed in the middle of these bent portions or curves, and the transfer target location can be transferred. The transfer device 3 may be installed at the position.

(9) In the above embodiment, the first conveying device 1 (conveying device) that conveys the first container C1 (container) and the second conveying device 2 that conveys the second container C2 are described as an example of a configuration in which conveyor devices are used. did. However, the configuration of the conveying device for conveying these containers is not limited to this, and various known conveying devices such as a conveying cart and a carousel type conveying mechanism can be used. In addition, the target location where the transfer device 3 transfers the article W is not limited to the container transported by such a transport device, and various locations where the article W is placed may be set as the target location for transfer. can be done. For example, a container transported by a worker may be the transfer target location, or a transport surface of a transport device without a container may be the transfer target location.

For example, as shown in FIG. 25, it is preferable to install the transfer device 3 with a picking station having a carousel-type transfer mechanism as a transfer target location. In the example shown in this figure, the article transfer equipment includes a first picking device 101 that conveys a first container C1 so as to rotate around an axis along the X direction X, and a second container C2 that is conveyed along the X direction X and a second picking device 102 that conveys so as to rotate around the axis. The containers (the first container C1 and the second container C2) transported by these picking devices (the first picking device 101 and the second picking device 102) are set as transfer target locations. Therefore, the transfer device 3 is installed on the first side Z1 in the Z direction with respect to the first picking device 101 and the second picking device 102 arranged in the X direction X. As shown in FIG. The first picking device 101 includes a plurality of supports 103 that support the first container C1, a support rotator 104 that rotates the plurality of supports 103 about an axis along the X direction X, and a first conveyor 105. , and a second conveyor 106 . The first picking device 101 transfers the first container C1 from the first conveyor 105 to the support 103, rotates and conveys the first container C1 so as to rotate around the axis along the X direction X, and then picks up the support 103. The first container C1 is conveyed so as to be passed from the container to the second conveyor 106.例文帳に追加A first position P<b>1 is set in the middle of the rotary transfer in the first picking device 101 . The second picking device 102 is configured in the same manner as the first picking device 101, and the support 103 supports and conveys the second container C2. A second position P<b>2 is set in the middle of the rotation transfer of the second picking device 102 . Then, the transfer device 3 moves from the first container C1 supported by the support 103 at the first position P1 of the first picking device 101 to the support 103 at the second position P2 of the second picking device 102. The target article WT is transferred to the supported second container C2.

(10) The configurations disclosed in the respective embodiments described above can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate without departing from the scope of the present disclosure.

3. Outline of the above-described embodiment An outline of the article transfer equipment described above will be described below.

The article transfer equipment controls a first holding section that holds an article, a second holding section that holds an article, a driving section that moves the first holding section and the second holding section, and the driving section. a control unit;
With a predetermined reference direction as the Z direction, one of two directions orthogonal to each other as viewed in the Z direction as the X direction and the other as the Y direction, the driving unit guides the first holding unit in the Z direction. a first Z-axis drive unit that moves while guiding a second Z-axis drive unit that guides and moves the second holding unit in the Z direction; and a first X-axis drive unit that guides and moves the first holding unit in the X direction. a second X-axis driving portion for guiding and moving the second holding portion in the X direction; a first Y-axis driving portion for guiding and moving the first holding portion in the Y direction; a second Y-axis drive unit that guides and moves the second holding unit in the Y direction, wherein the control unit controls at least one of the size, shape, and material of the target article to be transferred. In the independent transfer control, the first holding section and the second holding section hold different target articles. and controlling the driving section so that the first holding section and the second holding section perform transfer operations of the target article independently of each other, and in the joint transfer control, the first holding section and the second holding section The two holding sections jointly hold one target article, and control the driving section so as to perform a transfer operation of the target article.

According to this configuration, the first Z-axis driving section, the first X-axis driving section, and the first Yh-axis driving section all have a simple configuration that guides and moves the first holding section in the linear direction. While the holding section can be moved in any of the Z-direction, X-direction, and Y-direction, control by the control section can be easily performed, and each drive section can be configured at a low cost.
In addition to the first holding section, the first Z-axis driving section, the first X-axis driving section, and the first Y-axis driving section, the second holding section, the second Z-axis driving section, the second X-axis driving section, and the second Y-axis driving section It has a drive. Therefore, when the control unit executes the independent transfer control, the first holding unit and the second holding unit can hold different target articles and simultaneously transfer a plurality of target articles. It can be transferred efficiently. In addition, the control unit executes the joint transfer control, so that the first holding unit and the second holding unit jointly hold and transfer the target article that cannot be held by one holding unit due to its size, shape, or material. Therefore, various target articles can be transferred.
As described above, according to the present characteristic configuration, it is possible to realize a configuration capable of efficiently transferring target articles and transferring various target articles while keeping the installation cost of the article transfer equipment low. can be done.

Here, the first holding part and the second holding part are configured to approach the target article from a first side in the Z direction, which is one side in the Z direction, and hold the target article. In the transfer control, when the surface of the target article facing the first side in the Z direction is a flat surface along the direction perpendicular to the Z direction, the first holding section and the second holding section are separated from each other. The target article is held at the same position in the Z direction, and the surface of the target article facing the first side in the Z direction has a different shape from the flat surface along the direction perpendicular to the Z direction. In this case, it is preferable to hold the target article in a state in which the first holding portion and the second holding portion are positioned at different positions in the Z direction.

According to this configuration, in the joint transfer control, the target article is held while the first holding section and the second holding section are located at the same position in the Z direction, or the first holding section and the second holding section are held at the same position. By holding the target article in different states in the Z direction, regardless of whether the surface of the target article facing the first side in the Z direction is a flat surface along the direction orthogonal to the Z direction, The target article can be properly held by the first holding portion and the second holding portion.

The apparatus further comprises a conveying device that conveys a container containing an article from a predetermined reference position toward a first side in a conveying direction that is one side of a conveying direction that intersects the Z direction, wherein the container: It has an opening that opens to a first side in the Z direction, which is one side in the Z direction, and the controller is accommodated in the container at the reference position in the independent transfer control or the joint transfer control. After holding the target article held by at least one of the first holding unit and the second holding unit, controlling the conveying device to convey the container to the first side in the conveying direction, It is preferable to control the driving section so that at least one of the holding section and the second holding section is moved to the first side in the conveying direction while being moved to the first side in the Z direction to take out the target article from the container. be.

According to this configuration, after the target article housed in the container at the reference position is held by at least one of the first holding section and the second holding section and before the target article is taken out of the container, the conveying By starting the transportation of the container by the device, the transportation efficiency of the container can be improved compared to the case where the transportation of the container by the transportation device is started after the target article is taken out of the container.
Further, when such a container is transported, there is a risk that the side wall of the container during movement may come into contact with the target article before it is taken out of the container. By moving at least one of the parts to the Z direction first side while moving to the transport direction first side, the target article can be taken out from the container while avoiding contact of the target article with the container.
As described above, according to this configuration, it is possible to improve the transport efficiency of the container while avoiding contact of the target article with the container.

In the joint transfer control, the control section holds the target article in a state where the center of gravity of the target article is positioned between the first holding section and the second holding section as viewed in the Z direction. It is preferable to control the drive unit as follows.

According to this configuration, it is possible to prevent the weight of the target article from acting excessively on one of the first holding section and the second holding section, and the target article can be held by the first holding section and the second holding section. can be stably held.

Further, each of the first holding section and the second holding section includes a suction section that holds the target article by suction. Preferably, in the loading control, the driving section is controlled such that the first holding section and the second holding section hold different positions on the outer edge of the target article.

According to this configuration, by holding the outer edge of the bag-shaped target article with the first holding section and the second holding section, it is possible to suppress the held target article from hanging down. Therefore, it is possible to reduce the possibility that the stability of the holding posture of the target article is lost due to the sagging, and the target article is detached from the first holding portion and the second holding portion.

A technique according to the present disclosure includes a first holding section that holds an article, a second holding section that holds an article, a driving section that moves the first holding section and the second holding section, and a control of the driving section. It can be used for an article transfer facility equipped with a control unit for

1: First conveying device (conveying device)
7: opening 11: first holding portion 12: second holding portion 15: driving portion 20: suction pad (suction portion)
21: First Z-axis drive section 22: Second Z-axis drive section 46: First Y-axis drive section 47: Second Y-axis drive section 71: First X-axis drive section 72: Second X-axis drive section C1: First container (container)
G: center of gravity H: control device (control unit)
P1: First position (reference position)
W: Article WT: Target article X: X direction (conveyance direction)
X1: X direction first side (conveying direction first side)
Y: Y direction Z: Z direction Z1: Z direction first side

Claims (6)

a first holding section for holding an article, a second holding section for holding an article, a driving section for moving the first holding section and the second holding section, and a control section for controlling the driving section An article transfer facility,
Let a predetermined reference direction be the Z direction, and let one of two directions orthogonal to each other in the Z direction be the X direction and the other be the Y direction,
The drive unit
a first Z-axis drive unit that guides and moves the first holding unit in the Z direction;
a second Z-axis drive unit that guides and moves the second holding unit in the Z direction;
a first X-axis drive unit that guides and moves the first holding unit in the X direction;
a second X-axis drive unit that guides and moves the second holding unit in the X direction;
a first Y-axis driving unit that guides and moves the first holding unit in the Y direction;
a second Y-axis drive unit that guides and moves the second holding unit in the Y direction ,
The control unit
A condition that the size of a target article, which is an article to be transferred, is equal to or larger than a set size, a condition that the weight of the target article is greater than the set weight, and a condition that the packaging type of the target article is bag-like. If at least one condition of is satisfied, joint transfer control is selected and executed,
The condition that the size of the target product is less than the set size, the condition that the weight of the target product is equal to or less than the set weight, and the condition that the packaging type of the target product is not bag-like are all satisfied. Select and execute independent transfer control if
In the independent transfer control, the first holding section and the second holding section hold different target articles, and the first holding section and the second holding section transfer the target articles independently of each other. controlling the drive unit to perform a loading operation;
In the joint transfer control, the first holding section and the second holding section jointly hold one target article, and control the driving section so as to perform a transfer operation of the target article. Goods transfer equipment. further comprising a conveying device for conveying a container containing an article from a predetermined reference position toward a first side in the conveying direction, which is one side of the conveying direction intersecting the Z direction;
The container has an opening that opens to a first side in the Z direction, which is one side in the Z direction,
In the independent transfer control or the joint transfer control, the control unit holds the target article housed in the container at the reference position by at least one of the first holding unit and the second holding unit. After that, while controlling the conveying device to convey the container to the first side in the conveying direction and moving at least one of the first holding portion and the second holding portion to the first side in the conveying direction, 2. The article transfer equipment according to claim 1, wherein said drive unit is controlled so as to move said target article to said Z direction first side and take out said target article from said container. further comprising a conveying device for conveying a container containing an article from a predetermined reference position toward a first side in the conveying direction, which is one side of the conveying direction intersecting the Z direction;
The container has an opening that opens to a first side in the Z direction, which is one side in the Z direction,
In the independent transfer control or the joint transfer control, the control unit holds the target article housed in the container at the reference position by at least one of the first holding unit and the second holding unit. before moving the target article to a take-out position where the lower end of the held target article is the first side in the Z direction from the end of the container on the first side in the Z direction, controlling the conveying device to convey the article to the first side in the conveying direction, and conveying at least one of the first holding section and the second holding section until the target article reaches the take-out position; 2. The article transfer equipment according to claim 1, wherein said drive unit is controlled so as to remove said target article from said container by moving it to said Z direction first side while moving it to said direction first side. The first holding portion and the second holding portion are configured to approach the target article from a Z-direction first side, which is one side in the Z-direction, and hold the target article;
In the joint transfer control,
When the surface of the target article facing the first side in the Z direction is a flat surface along the direction orthogonal to the Z direction, the first holding portion and the second holding portion are the same in the Z direction. holding the target article in the position,
When the surface of the target article facing the first side in the Z direction has a shape different from the flat surface along the direction perpendicular to the Z direction, the above-mentioned The article transfer facility according to any one of claims 1 to 3, wherein the target articles are held at different positions in the Z direction. In the joint transfer control, the control section holds the target article in a state in which the center of gravity of the target article is positioned between the first holding section and the second holding section as viewed in the Z direction. 5. The article transfer equipment according to any one of claims 1 to 4, which controls the drive unit. each of the first holding portion and the second holding portion includes an adsorption portion that holds the target article by adsorption;
When the target article is a bag-shaped article, the control section causes the first holding section and the second holding section to hold different positions on the outer edge of the target article in the joint transfer control. 6. The article transfer equipment according to any one of claims 1 to 5, wherein the drive unit is controlled so as to.

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