JP4326233B2 - Adsorption device for plastic sheet packing products - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a synthetic resin sheet packing that holds and holds a product packed in a synthetic resin sheet using a boxing robot such as an articulated robot in a storage box such as a cardboard box. The present invention relates to a product adsorption device.
[0002]
[Prior art]
For example, as a suction device that sucks and holds a product when the product is stored in a cardboard box as a storage box using an articulated robot, a suction type article suspension device shown in, for example, Patent Document 1 is known. .
[0003]
In this suspension device, when the suction surface of the article is pressed against the flat suction frame, and the suction frame is pressed against the article, the spindle of the suction valve is pushed up by this press to start vacuum suction and hold the suction It is characterized by doing.
[0004]
[Patent Document 1]
JP-A-8-318489
[Problems to be solved by the invention]
However, when an article (product) packed with a synthetic resin sheet is adsorbed by the above-described suspension device, only the synthetic resin sheet that packs the product is adsorbed to the adsorption surface of the adsorption frame. In addition, the product in the synthetic resin sheet hangs down due to its own weight and tilts so that its posture is not constant.
[0006]
For this reason, during the transportation, the product is prone to be sucked in the synthetic resin sheet, and it is likely to cause a defective packing of the falling box. There was a risk that the finished product hit the cardboard box and could not be packed.
[0007]
In addition, when the size of the article to be sucked (to-be-sucked surface) is changed, it is necessary to replace it with a suction device having a suction frame that substantially matches the to-be-sucked surface of the article. It was necessary to provide an adsorption device.
[0008]
The present invention was invented in order to solve the above-described conventional drawbacks, and the problem is that the product packed with the synthetic resin sheet is sucked and held without being displaced and dropped in the middle of conveyance. An object of the present invention is to provide an adsorption device for a synthetic resin sheet-packed product that can prevent the above-described problem.
[0009]
Another object of the present invention is to provide an apparatus for adsorbing a synthetic resin sheet-packed product that can stably perform the boxing operation without disturbing the posture of the adsorbed product when the box is packed in a cardboard box. .
[0010]
Another object of the present invention is to provide a synthetic resin sheet packaged product capable of reliably and stably adsorbing a product by a single device even when the size of the surface to be adsorbed is changed. To provide an adsorption device.
[0011]
[Means for Solving the Problems]
The present invention relates to a suction device that holds and holds one or more products packed with a synthetic resin sheet between predetermined positions, and a long mounting board that is moved and controlled between predetermined positions ; Four movable plates that extend in a direction perpendicular to the longitudinal direction on both sides of each end portion of the mounting plate, and are supported so that the base end portion can be repositioned in either the longitudinal direction or the longitudinal orthogonal direction. Each suction plate is supported so that its position can be changed in either the extending direction or the extending orthogonal direction of each movable plate, and a large number of suctions having a size capable of sucking a part of the synthetic resin sheet into the suction surface. Four suction boxes provided with holes, and each movable plate is repositioned to either the longitudinal direction or the longitudinal orthogonal direction, and each suction box is changed to either the extending direction or the extending orthogonal direction. adsorption friendly products various planar size Te Characterized in that the.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings showing embodiments.
Embodiment 1
1 to 3, the product boxing system is composed of a product supply device 1, a transfer robot 3, and a boxing device 5. This boxing system substantially coincides with the upper opening of the cardboard box 7 as a storage box. One or a plurality of sheet-packed products 9 having a planar size are directly entered from above into the cardboard box 7 and packed.
[0013]
The cardboard box 7 is formed of corrugated paper, thick kraft paper, or synthetic resin corrugated cardboard, and is provided so that a lid piece (not shown) is folded and opened at the top.
[0014]
The above-described product supply device 1 is constituted by, for example, a roller conveyor or a belt conveyor, and the transfer robot 3 transfers a sheet packing product 9 in which the product 9b is packed with a packaging material sheet 9a such as a synthetic resin sheet or a synthetic resin bubble sheet. Intermittent conveyance to the removal position. The sheet packing product 9 to be conveyed may be one or a plurality of sheets as long as the plane size substantially coincides with the upper opening of the cardboard box 7 as described above. It is only necessary that the size of the plane of the assembly substantially matches the upper opening. The figure shows an example in which an assembly of four sheet-packed products 9 is boxed in a single loading operation.
[0015]
Further, as a method for packing the product by the packaging material sheet 9a, for example, the upper side end surface and the lower side end surface in the conveyance direction of the product assembly in the state where the synthetic resin sheets continuous to the lower surface and the upper surface of the product 9b are respectively arranged. Further, a fusion member (not shown) is moved from the lower side and brought into contact with it, and then heated and fused, and thereafter, a fusion member (not shown) disposed above and below both side surfaces in the direction perpendicular to the conveyance of the product. Z) is moved, brought into contact, and fused to be packed. The packing method is not limited to the above example, and may be other known methods.
[0016]
The transfer robot 3 controls, for example, a plurality of arms by pivoting and moving the suction device 11 according to the present invention provided on the tip arm between the take-out position of the product supply apparatus 1 and a boxing position in the boxing apparatus 5 described later. It is an articulated robot that moves and packs the sheet packing product 9. The transfer robot 3 may be a three-dimensional orthogonal type robot in addition to the above-described multi-joint type.
[0017]
The suction device 11 is provided with four suction boxes 15 attached to a mounting board 13 that is controlled to rotate at an arbitrary angle with respect to the tip arm of the transfer robot 3 so as to be movable in the longitudinal orthogonal direction and the longitudinal direction of the mounting board 13. It consists of a structure.
[0018]
That is, the mounting board 13 is formed with a pair and two sets (total of four) of long holes 17 extending in the longitudinal direction from the center, and the shaft end portion of the fixing screw 19 through which each long hole 17 is inserted is orthogonal to the longitudinal direction. Each of the movable plates 21 extending in the direction is fixed. These movable plates 21 can be moved in the longitudinal direction of the mounting board 13 by fixing screws 19 that slide in the long holes 17, and are fixed at positions corresponding to the size of the sheet packaging product 9.
[0019]
Further, each movable plate 21 is formed with a long hole 25 extending in the direction perpendicular to the longitudinal direction, and the suction box 15 is fixed to a shaft end portion of a fixing screw 27 inserted through each long hole 25. Each suction box 15 can be moved in the longitudinal orthogonal direction by a fixing screw 27 that slides in each long hole 25 and is fixed at a position corresponding to the size of the sheet packaging product 9.
[0020]
Accordingly, the respective suction boxes 15 move in the longitudinal direction and the longitudinal orthogonal direction with respect to the mounting board 13, and the size of the planar surface assumed at the outer edge of each suction box 15 attracts the plane of the sheet packing product 9. It is configured to approximately match the size.
[0021]
A large number of suction holes 15a are formed on the suction surface of each suction box 15 described above, and suction hoses (not shown) connected to suction ports (not shown) provided on the mounting board 13 on the non-suction side. Connected). The suction hole 15 a described above is set to a size that allows a part of the packaging sheet 9 a for packing the sheet packing product 9 to be drawn into the suction box 15.
[0022]
At the boxing position of the transfer robot 3, for example, a boxing device 5 in which a loading device 31 such as a roller conveyor or a belt conveyor and a loading device 33 are arranged in parallel is arranged. A moving conveyor 35 is movably connected in the direction perpendicular to the conveying direction between the upper and lower directions. The moving conveyor 35 supports the empty cardboard box 7 carried in by the carry-in device 31 to enable the packing of the sheet-packed product 9, and then moves the cardboard box 7 packed with the sheet-packed product 9 to the carry-out device 33 side. It moves so that it can be carried out of the boxing device 5.
[0023]
Next, the adsorption action of the sheet packaged product 9 by the adsorption device 11 will be described.
First, according to the size of the sheet packing product 9 to be boxed, each suction box 15 is moved in the longitudinal orthogonal direction and the longitudinal direction of the mounting board 13 with respect to the mounting board 13 so that the suckable area width of the sheet packing product 9 is reduced. Make it almost coincide with the plane.
[0024]
That is, when the sheet-packed product 9 to be packed is small, as shown in FIG. 3, the movable plates 21 are moved toward each other with respect to the mounting board 13 with the fixed screws 19 loosened, and the fixed screws Each suction box 15 is moved in a direction approaching each other with respect to the corresponding movable plate 21 in a state in which 27 is loosened, and the suction surfaces formed by the four suction boxes 15 are made to coincide with the size of the plane of the product.
[0025]
On the contrary, when the sheet-packed product 9 to be packed is large, as shown in FIG. 4 (FIG. 4 shows a case where the sheet is moved at the maximum width), the fixing screws 19 are loosened with respect to the mounting board 13. The respective movable plates 21 are moved away from each other, and the respective suction plates 15 are moved away from each other with respect to the corresponding movable plates 21 while the fixing screws 27 are loosened. The formed suction surface is matched with the size of the product plane. In this case, a non-suckable space is formed between each suction box 15 corresponding to the center of the mounting board 13.
[0026]
After adjusting the arrangement of the suction box 15, the fixing screws 19 and 27 are tightened by the nuts 19a and 27a to fix the movable plate 21 and the suction box 15 at the respective positions.
[0027]
Next, in the state where the cardboard box 7 whose upper surface is opened by transporting and driving the loading device 31 is loaded onto the moving conveyor 35, the transfer robot 3 is driven and controlled, and the sheet packaging is loaded into the take-out position of the product supply device 1 The product 9 is held by suction on the suction device 11.
[0028]
At this time, as shown in FIG. 5, a part of the packaging sheet 9 a for packing the sheet packing product 9 was pulled into the suction hole 15 a by the suction force of each suction box 15 to increase the suction holding force and pulled in. By bringing the product 9b packed by the packaging sheet 9a to the suction surface side of each suction box 15 and bringing the sheet-packed products 9 into close contact with each other, it can be made into one solid state.
[0029]
Further, when the sheet packing product 9 larger than the plane of the mounting board 13 is sucked and held, a gap is formed between the suction boxes 15, particularly in the center side of the mounting board 13, to form a non-suckable area. Even in this case, as described above, since a part of the packaging material sheet 9a is attracted and held in each suction box 15 in the suction hole 15a as described above, even if there is a non-suckable area, a high suction hold The sheet packing product 9 can be held by force and the sheet packing products 9 can be brought into close contact with each other.
[0030]
Then, after the sheet packing product 9 sucked and held by the suction device 11 by the transfer robot 3 to be moved is positioned above the upper surface opening of the cardboard box 7 on the moving conveyor 35, the suction device 11 is controlled to move downward. Then, the sheet packing product 9 is directly entered into the corrugated cardboard box 7 from above to perform boxing.
[0031]
When the sheet-packed product 9 sucked and held by the suction device 11 enters the cardboard box 7, as described above, a part of the packaging sheet 9 a is drawn into each suction box 15 of the suction device 11 to make the sheet-packed product. 9 Since the flat surface is made to substantially coincide with the upper surface opening of the cardboard box 7 by bringing them into close contact with each other, it is possible to prevent a part of the sheet-packed product 9 from coming into contact with the cardboard box 9 at the time of entry and to directly input it. ing.
[0032]
After the above-described box stacking operation, the transfer robot 3 is driven and controlled, and the suction device 11 is extracted from the inside of the cardboard box 7 and then moved to the take-out position of the product supply device 1 to wait for the next sheet packing. Product 9 is adsorbed and held. On the other hand, the boxing device 5 moves the moving conveyor 35 from which the adsorption device 11 has come out of the cardboard box 7 to the unloading device 33 side and unloads the moving conveyor 35 to the outside of the boxing device 5 by the unloading device 35. Next, the carry-in device 31 is driven, and the empty cardboard box 7 in which the sheet-packed product 9 is boxed next is carried onto the moving conveyor 35, and the next boxing operation is performed.
[0033]
In the present embodiment, the suckable area of the suction device 11 can be changed according to the size of various sheet packing products 9, particularly the size of the plane, and various types of sheet packing products 9 can be held by suction with simple operations. can do.
[0034]
Further, since a part of the packaging sheet 9a for packing the sheet packing product 9 is held in a state of being pulled into the suction hole 15a, a high suction holding force can be obtained, and the sheet packing product 9 is detached during the conveyance. There is no risk of poor transport. In particular, when adsorbing the large sheet-packed product 9 by separating the suction boxes 15 from each other, a non-suckable area is formed between the suction boxes 15, but even in that case, a high holding force is obtained. be able to.
[0035]
Further, the packaging material sheet 9a for packing the sheet-packed product 9 is narrowed down, and the internal product 9b is drawn toward the suction box 15 side and brought into close contact with each other, whereby the plane size of the sheet-packed product 9 is set to the upper surface opening of the cardboard box 7. Thus, it is possible to prevent a part of the sheet-packed product 9 from coming into contact with the cardboard box 7 at the time of loading.
[0036]
The present invention can be modified as follows.
1. As a support structure of the suction box for the mounting plate, the mounting plate 13 is provided with a pair of first and second rail and shaft first guide members extending in the longitudinal direction from the center portion, and the movable plate 21 is provided on each first guide member. Each is supported so as to move in the longitudinal direction. Each movable plate 21 is provided with a second guide member of a rail or a shaft extending in the longitudinal orthogonal direction, and the suction box 15 is supported by each second guide member so as to be movable in the longitudinal orthogonal direction. Each suction box 15 is configured to move in the longitudinal direction and the longitudinal orthogonal direction corresponding to the size of the plane of the sheet packaging product 9 to be held.
[0037]
It should be noted that each movable plate 21 for each first guide member and each suction box 15 for each second guide member may be fixed at a predetermined position by a fixing screw.
[0038]
2. The supporting structure of the suction box for mounting plate, the mounting plate 13, extending longitudinally from the center, a pair which is connected to an electric motor, rotatably supports two sets of the first feed screw, the first feed A nut member provided on the movable plate 21 is meshed with the screw to be movable in the longitudinal direction. In addition, each movable plate 21 extends in a direction perpendicular to the longitudinal direction and rotatably supports a second feed screw connected to the electric motor, and a nut member provided in the suction box 15 is engaged with each second feed screw. The suction box 15 is configured to be movable in the longitudinal orthogonal direction, and the suction boxes 15 are moved relative to the mounting board 13 in the longitudinal direction and the longitudinal orthogonal direction corresponding to the size of the plane of the sheet packaging product 9 to be held.
[0039]
3. In the above description, the suction device 11 sucks one or a plurality of sheet-packed products 9 having a rectangular plane, but the planar shape of the sheet-packed product 9 is not limited to a square shape. For example, it may be circular.
[0040]
When a plurality of sheet-packed products 9 having a circular plane are adsorbed simultaneously, a gap is formed between the sheet-packed products 9, and the sheet-packed product 9 is sucked from the suction holes 15a corresponding to the gaps. Although the suction force from the suction hole 15a corresponding to the pressure is reduced, even in this case, a part of the packaging sheet 9a is drawn into the suction hole 15a corresponding to the sheet packaged product 9 and is adsorbed. The adsorption holding power can be maintained.
[0041]
【The invention's effect】
According to the present invention, a product packed with a synthetic resin sheet can be sucked and held without being displaced, and can be prevented from dropping during conveyance. Further, when packing into a corrugated cardboard box, it is possible to stably perform the boxing operation without disturbing the adsorbed product posture. Furthermore, even when the size of the surface to be adsorbed is changed, the product can be reliably and stably adsorbed by a single device.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view of a boxing system.
FIG. 2 is an overall perspective view of the adsorption device.
FIG. 3 is a plan view of the adsorption device.
FIG. 4 is an explanatory diagram showing an enlarged movement state of the suction box.
FIG. 5 is an explanatory view showing a state of product adsorption by the adsorption device.
FIG. 6 is an explanatory view showing an adsorption state according to a conventional example.
[Explanation of symbols]
7-Corrugated cardboard box as storage box, 9-sheet packing product, 9a-packaging sheet, 11-adsorption device, 13-mounting board, 15-adsorption box, 15a-suction hole, 21-movable plate

Claims (4)

In an adsorption device that adsorbs and holds one or more products packed in a synthetic resin sheet when transferred between predetermined positions ,
A long mounting board that is controlled to move between predetermined positions ;
Four movable plates that extend in a direction perpendicular to the longitudinal direction on both sides of each end portion of the mounting plate, and are supported so that the base end portion can be repositioned in either the longitudinal direction or the longitudinal orthogonal direction. ,
For each movable plate, a large number of suction holes are supported so that the position can be changed in either the extending direction or the orthogonal direction of the movable plate, and the suction surface has a size capable of sucking a part of the synthetic resin sheet. Four suction boxes provided with
With
A suction device capable of picking up products of various plane sizes by changing the position of each movable plate in one of the longitudinal direction and the longitudinal orthogonal direction and each suction box in either the extending direction or the extending orthogonal direction. . In claim 1,
The mounting plate is provided with a pair and two sets of first guide members extending in either the longitudinal direction or the longitudinal orthogonal direction to movably support the movable plates, and each movable plate has the extending direction and the extending orthogonal direction. A suction device provided with a second guide member extending in one of the directions and movably supporting each suction box. In claim 1,
The mounting board is provided with a pair and two sets of first long holes extending in either the longitudinal direction or the longitudinal orthogonal direction, and each movable plate is fixedly supported by a shaft member that passes through each long hole, and is movably supported. each movable plate respectively the second elongated hole extending in the direction perpendicular to the first elongated hole, the suction device for movably supporting mounted each suction box second long hole on the shaft member to be inserted. In claim 1,
The mounting board extends in either the longitudinal direction or the longitudinal orthogonal direction and supports a pair of first feed screws connected to the electric motor in a rotatable manner, and a movable plate is engaged with each first feed screw. The movable plate is provided with a second feed screw that extends in a direction orthogonal to the first feed screw and is connected to the electric motor, and each suction box is engaged with the second feed screw. Adsorption device that is movably supported.

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