JP3681466B2 - Work carry-out device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a workpiece carry-out device, and more particularly to a workpiece carry-out device that separates and carries out workpieces made of plate materials stacked at a plurality of locations on the same pallet.
[0002]
[Prior art]
In a conventional work unloading device, one type of work in a single row is loaded on each pallet. For example, a narrow work, for example, a plate material having a width of about 1/4 of the width of the pallet may be stacked on a pallet corresponding to a work of 4 inches × 8 inches. Therefore, when the workpiece size is small, there is a problem that a lot of useless space is generated on each pallet, and it is required that the workpieces can be stacked in a plurality of rows.
[0003]
[Problems to be solved by the invention]
However, when multiple rows of workpieces are loaded on the same pallet, if the loading height of the workpieces in each row is different, there is a problem that the workpieces in the row with a low loading height cannot be sucked by the suction device. It was. In other words, since the suction device is obstructed by a work in a row with a high loading height, the suction tool (suction pad, magnet, etc.) of the suction device does not reach the work in a row with a low loading height, so that suction cannot be performed. There was a problem.
[0004]
The present invention has been made in order to solve the above-mentioned problems. The purpose of the present invention is to transfer a plurality of rows of workpieces loaded on the same pallet to a processing apparatus. An object of the present invention is to provide a work unloading apparatus for unloading a desired work to a processing apparatus without being disturbed by the loading height.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the workpiece carry-out apparatus according to the present invention according to claim 1 moves and places the pallet below a storage shelf having a plurality of shelves for storing pallets loaded with workpieces such as plate materials and products. A possible pallet guide is provided, and a plurality of suction means for separating and lifting the workpieces loaded on the pallet one by one above the pallet placed on the pallet guide are arranged in two rows In the workpiece unloading device for unloading the workpieces separated one by one by the suction device to the processing device, the pallet can be moved up and down independently into the large pallet and the frame of the large pallet. A plurality of small pallets are housed, and below the pallet guide are a small lifter that can individually lift and lower the small pallet and a large lifter that can lift and lower the large pallet. The large lifter is provided so as to be movable along the pallet guide, and the large lifter is provided with a drive motor for moving the large lifter along the pallet guide, the large lifter and the small lifter are connected, and the large lifter is provided. By moving and positioning, the small lifter can be positioned at a desired lift position below the small pallet .
[0006]
Therefore, a large lifter is applied to a desired small pallet among a plurality of small pallets stored in a frame of the large pallet moved from the storage shelf to the pallet guide below the storage shelf so as to be independently lifted and lowered. The drive motor is driven to move the large lifter along the pallet guide, the small lifter connected to the large lifter is moved below the desired small pallet, and the desired small pallet is moved with the small lifter. By lifting the workpiece on the desired small pallet to a higher position than the other workpieces by lifting it from the large pallet, the desired workpiece is sucked by the suction device without being disturbed by the other workpieces and is transferred from the storage shelf to the processing device. can do. A workpiece on a large pallet on which a workpiece larger than the workpiece on the small pallet is placed can be similarly carried out to the processing apparatus by using a large lifter .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of a work carry-out device of the present invention will be described with reference to the drawings.
[0010]
Referring to FIG. 4, in order to facilitate understanding of the workpiece carry-out device 1 of the present invention, an outline of the storage shelf 3 on which the workpiece carry-out device is mounted will be described as an example. The storage shelf 3 (auto storage) stores, takes out, and stores workpieces W such as plate materials and products. A three-dimensional machine frame 7 having an appropriate width that allows the pallet 5 and the like on which the workpieces W are loaded to be freely inserted and removed. It consists of In addition, a pallet guide 9 that can be placed by moving the pallet 5 is provided below the storage shelf 3, and the pallet guide 9 is provided to extend outward from one side of the storage shelf 3. . Above the pallet guide 9, there is provided a suction device 11 that can lift the workpieces W on the pallet 5 placed on the pallet guide 9 separately. A small lifter 13 and a large lifter 15 for moving up and down the pallet 5 placed on the pallet guide 9 are provided below the pallet guide 9 so as to be able to run substantially parallel to the longitudinal direction of the pallet guide 9. Yes.
[0011]
In addition, an elevator 17 that is controlled to move up and down is provided on one side of the storage shelf 3, and a traverser 19 (load-in / out device) for taking in and out the pallet 5 stored in the storage shelf 3 is provided in the elevator 17. ) Is provided. In this elevator 17, the hook 21 of the pallet 5 of the storage shelf 3 is hooked on the hook 23 of the traverser 19, pulled out from the storage shelf 3, is lowered, and the traverser 19 moves the pallet 5 in the elevator 17 to the pallet guide 9. The pallet 5 placed on the pallet guide 9 from the outside of the storage shelf 3 is pulled out and placed on the elevator 17 by the traverser 19 and lifted, and the traverser 19 moves inside the elevator 17. The pallet 5 is pushed up and down so as to be pushed out and stored in the storage shelf 3.
[0012]
The suction device 11 includes a loader 31 that travels on a loader guide rail 29 provided between the storage shelf 3 and the upper part of the processing table 27 of the processing device 25 of the turret punch press, for example, on the right rear side in FIG. Yes. In the loader 31, for example, a loader main body 33 is suspended from a loader guide rail 29 by a slider (not shown), and the loader main body 33 is driven by a motor (not shown). ) And is configured to travel on the loader guide rail 29 by engaging the pinion with a rack (not shown) provided on the loader guide rail 29. In the front and rear portions of the lower portion of the loader body 33 in FIG. 4, two loader beams 35 that are long in the left-right direction in FIG. 4 are vertically moved and controlled at regular intervals along the longitudinal direction of the loader beams 35. A suction pad 37 for sucking the upper surface of the workpiece W is disposed, and each suction pad 37 is configured to suck the workpiece W by vacuum. In addition, it may replace with this adsorption | suction pad 37 and may be made into the form of the magnet attracted | sucked with an electromagnet.
[0013]
2 and 3, the pallet 5 includes a large pallet 43 formed of a frame body in which a rectangular outer frame 39 is divided into a plurality of small inner frames 41, and the inner frame 41. It is comprised with the small pallet 45 accommodated independently in each. Although the size of the pallet 5 is not limited, in the example of the present embodiment, the large pallet 43 has a size corresponding to a work W of 4 inches × 8 inches, for example, a width of 1200 mm and a length of 2400 mm. 39 is a rectangular pipe formed in a rectangular shape, and the inner frame 41 is formed by dividing the width direction in the outer frame 39 into three by a partition frame 47 made of a square pipe. The small pallet 45 housed in the inner frame 41 is integrally provided with an engaging member 49 having an L-shaped cross section that engages with the outer frame 39 of the large pallet 43 at the end in the longitudinal direction. Yes. Therefore, each small pallet 45 is accommodated in the inner frame 41 of the large pallet 43, and can be moved up and down independently by the small lifter 13 described later.
[0014]
Referring to FIG. 1, the small lifter 13 and the large lifter 15 described above will be described in detail. The small lifter 13 and the large lifter 15 are connected and driven by a motor (not shown) attached to the large lifter 15. The rails 51 provided at the lowermost stage of the storage shelf 3 are provided so as to be able to travel together. Although the small lifter 13 and the large lifter 15 do not necessarily have to be connected, the large pallet 43 can be easily moved up and down by the small lifter 13 and the large lifter 15, It is desirable to connect the small lifter 13 and the large lifter 15 in that either one of the lifters 13 is provided with a drive motor so that both lifters 13 and 15 can travel. The rail 51 is provided below the pallet guide 9 extending from the lowermost stage of the storage shelf 3 to the outside of the storage shelf 3 so as to be substantially parallel to the pallet guide 9. The small lifter 13 is configured to lift and lower each small pallet 45 described above by a hydraulic motor (not shown), and the large lifter 15 is provided so as to be lifted and lowered by a hydraulic motor (not shown). The large pallet 43 is moved up and down together with the lifter 13. In addition, the small lifter 13 and the large lifter 15 are provided so that they can be moved up and down independently. In addition, on the right side of the storage shelf 3 in FIG. 1, an unloading reference position L that is substantially aligned with the positioning reference position of the processing device 25 for sucking, lifting, and unloading the workpiece W at the same position by the suction device 11 is set in advance. In order for the small lifter 13 and the large lifter 15 to stop at predetermined positions, a plurality of limit switches 53 are provided on the rail 51 side, and an engaging portion 55 for pressing the limit switch 53 is provided on the large lifter 15. The large lifter 15 is controlled to be stopped by a detection signal detected by the limit switch 53 when the limit switch 53 is pressed by the engaging portion 55. Therefore, in order to be able to adjust the stop positions of the small lifter 13 and the large lifter 15, it is desirable that each limit switch 53 be adjustable in the horizontal direction.
[0015]
An example of the operation of carrying out the workpiece W on the pallet stored in the storage shelf 3 to the processing device 25 using the workpiece carry-out device 1 will be described with reference to FIG. The pallet 5 stored in the storage shelf 3 is one in which three small pallets 45 are stored in a large pallet 43 and a plate material (work W) is loaded on each small pallet 45 via a skid. This will be described as an example. The three small pallets 45 are referred to as small pallets 45a, 45b, and 45c in order from the left small pallet to the right in FIG.
[0016]
The large pallet 43 is pulled out and placed by the traverser 19 of the elevator 17 and lowered, and the large pallet 43 is moved by the traverser 19 to a predetermined position of the pallet guide 9, that is, the unloading reference position L (FIG. 4). . At this time, in FIG. 5A, the small pallet 45c on the right side of the large pallet 43 is placed at the carry-out reference position L [FIG. 5A].
[0017]
When the desired workpiece W to be unloaded is the workpiece W on the small pallet 45c on the right side of the large pallet 43, the large pallet 43 may remain in the position shown in FIG. The small lifter 13 is pulled and moved, and the small lifter 13 is stopped by being positioned below the small pallet 45 close to the unloading reference position L, that is, below the right small pallet 45c [FIG. 5B].
[0018]
The small pallet 45c is lifted by the small lifter 13 so that the height of the workpiece W on the small pallet 45c is positioned higher than the height of the workpiece W on the other two small pallets 45a and 45b. The loader beam 35 of the suction device 11 descends, and a single workpiece W is sucked and lifted by each loader pad 37, the loader 31 travels to the right on the loader guide rail 29, and the workpiece W strikes the workpiece of the machining device 25. It is carried out to this reference position [FIG. 5 (C)]. When this unloading operation is repeated and the unloading of the desired number of workpieces W is completed, the small lifter 13 is lowered and the small pallet 45c is stored in the frame of the large pallet 43 (FIG. 5D).
[0019]
Next, the small lifter 13 and the large lifter 15 are traveled to the lower position of the large pallet 43 (position shown in FIG. 5A) by the drive motor. Next, when the workpiece W to be carried out is the workpiece W on the small pallet 45b in the center of the large pallet 43, the small lifter 13 and the large lifter 15 are simultaneously operated to move the large pallet 43 upward from the pallet guide 9. After lifting, the center small pallet 45b is stopped at the unloading reference position L of the storage shelf 3, the small lifter 13 and the large lifter 15 are lowered, and the large pallet 43 is placed on the pallet guide 9. [FIG. 5E].
[0020]
Next, the large lifter 15 and the small lifter 13 are moved to the right, and the small lifter 13 is positioned below the small pallet 45 close to the unloading reference position L, that is, the central small pallet 45b [FIG. 5 (F)]. .
[0021]
The small center pallet 45b is lifted by the small lifter 13 so that the height of the work W on the small pallet 45b in the center is positioned higher than the height of the work W on the other two small pallets 45. Then, the workpiece W on the central small pallet 45b is repeatedly processed by the suction device 11 on the workpiece W on the central small pallet 45b one by one in the same manner as the work W unloading operation on the right small pallet 45c. It is carried out to 25 workpiece W abutting reference positions. When the delivery of the desired number of works W is completed, the small lifter 13 is lowered and the small pallet 45 b is stored in the inner frame 41 of the large pallet 43.
[0022]
The workpiece W on the small pallet 45a on the left side of the large pallet 43 is also lifted up from the pallet guide 9 by the small lifter 13 and the large lifter 15 in the same manner as the workpiece W on the small pallet 45b at the center. The small pallet 45a is moved to the unloading reference position L, the central small pallet 45b is raised by the small lifter 13, and the work W is unloaded by the suction device 11.
[0023]
The workpieces W of the small pallets 45a, 45b, and 45c of the large pallet 43 are not limited to the carry-out order in the example of the above-described embodiment, and are sequentially carried out from the workpiece W on the small pallet 45 at a desired position. Can do.
[0024]
In the work carry-out device according to the present invention, only the lifter 57 that can move up and down the small pallets 45a, 45b, and 45c and move in the horizontal direction is provided below the pallet guide 9 in the same manner as the small lifter 13 described above. But you can. That is, referring to FIG. 6, the operation moves the large pallet 43 pulled out from the storage shelf 3 to the elevator 17 and moves it to a predetermined position of the pallet guide 9 by the traverser 19 [FIG. 6 (A)].
[0025]
When the desired workpiece W to be unloaded is the workpiece W on the small pallet 45b at the center of the large pallet 43, the lifter 57 travels to the right and stops at a position below the small pallet 45b at the center [ FIG. 6B].
[0026]
The lifter 57 lifts the center small pallet 45b so that the height of the work W on the small pallet 45b is positioned higher than the height of the work W on the other two small pallets 45a and 45c. Therefore, the loader beam 35 of the suction device 11 is lowered without being disturbed by the loading height of other workpieces W, and a desired single workpiece W is sucked and lifted by each loader pad 37, so that the workpiece W is sucked. It is carried out to the processing device 25 by the device 11. When this unloading operation is repeated and the unloading of the desired number of workpieces W is completed, the lifter 57 is lowered and the small pallet 45b is stored in the frame of the large pallet 43 (FIG. 6C).
[0027]
Next, when the desired workpiece W to be carried out is the workpiece W on the small pallet 45a on the left side of the large pallet 43, the lifter 57 travels leftward to lift the left small pallet 45a from below, and Similarly to the small pallet 45b, the workpiece W is carried out to the processing device 25 by the suction device 11. This unloading operation is repeated [FIG. 6D]. The other workpieces W are the same as the above-described operation, and thus will be omitted.
[0028]
【The invention's effect】
As can be understood from the example of the embodiment as described above, according to the invention of claim 1, each can be moved up and down independently into the frame of the large pallet moved from the storage shelf to the pallet guide below the storage shelf. A drive motor of a large lifter is driven with respect to a desired small pallet among a plurality of small pallets stored, and the large lifter is moved along the pallet guide, and the small pallet connected to the large lifter is moved. Move the lifter below the desired small pallet, lift the desired small pallet from the large pallet with this small lifter, and lift the workpiece on the desired small pallet to a higher position than other workpieces. It can be sucked by the suction device without being disturbed by other workpieces and carried out of the storage shelf to the processing device. A workpiece on a large pallet on which a workpiece larger than the workpiece on the small pallet is placed can be similarly carried out to the processing apparatus by using a large lifter .
[Brief description of the drawings]
FIG. 1 shows an example of an embodiment of the present invention, and is a front view of a work carry-out device.
FIG. 2 is a perspective view of a pallet showing an example of an embodiment of the present invention.
3 is a cross-sectional view of the main part showing an engaged state between the large pallet and the small pallet in FIG. 2;
FIG. 4 shows an example of an embodiment of the present invention, and is a front view of an entire storage shelf including a work carry-out device.
FIGS. 5A to 5F are operation explanatory views of examples of the embodiment of the workpiece carry-out device of the present invention.
6 (A) to 6 (F) are operation explanatory views of examples of other embodiments of the workpiece carry-out device of the present invention.
[Explanation of symbols]
1 Work Unloading Device 3 Storage Shelf 5 Pallet 9 Pallet Guide 11 Suction Device 13 Small Lifter 15 Large Lifter 17 Elevator 19 Traverser 43 Large Pallet 45 Small Pallet 57 Lifter

Claims (1)

A pallet guide capable of moving and placing the pallet is provided at the lower part of a storage shelf having a plurality of shelves for storing pallets loaded with workpieces such as plate materials and products, and the pallet placed on the pallet guide A suction device in which a plurality of suction means that can be lifted by separating the workpieces loaded on the pallet is arranged in two rows is provided above the workpieces separated by the suction device. In the work unloading apparatus for unloading to a processing apparatus, the pallet is composed of a large pallet and a plurality of small pallets that can be moved up and down independently in the frame of the large pallet, and below the pallet guide, A small lifter capable of individually raising and lowering the small pallet and a large lifter capable of raising and lowering the large pallet are provided to be movable along the pallet guide, and the large lifter is provided with the large lifter. A drive motor for moving the slider along the pallet guide, connecting the large lifter and the small lifter, and moving the large lifter to position the small lifter below the desired small pallet. A work carry-out device, characterized in that it can be positioned at a lift position .

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