JP2000351032A - Plate stock conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate stock conveying device capable of improving a cycle time without delay in the case of carrying away a plate stock even in a short working time. SOLUTION: This device is provided with plural plate stock holding and running bodies 25 which freely circulate along a track 24 between a plate stock working machine 1 and a plate stock housing region 2 with the plate stock held. The next plate stock is carried away from the plate stock working machine 1 to the plate stock housing region 2 by another plate stock holding and running body 25 while the plate stock is carried away from the plate stock working machine 1 to the plate stock housing region 2 by one or more plate stock holding and running bodies 25 among these plate stock holding and running bodies 25. A sheet of small product plate stock W3 is carried away by the single plate stock holding and running body 25 and also a sheet of large base stock plate W1 is carried in by cooperation of plural plate stock holding and running bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying apparatus for unloading a sheet from a sheet processing machine such as a punch press.

[0002]

2. Description of the Related Art When unloading a product plate processed by a plate processing machine such as a punch press, an unloader that moves forward and backward along an erect rail along a straight path is generally used. The unloader has a plate material holder such as a gripper or a suction pad for holding the plate material. When a large number of product plate materials are cut out from one material plate material by a punch press, the unloader is reciprocated between the punch press and the product trolley every time the product plate material is cut off to carry out the product plate material.

[0003]

When a large number of product plates are cut out from a single material plate, processing with a punch press may be faster because the product plate is small, and the reciprocating time of the unloader may be longer. is there. Also, when punching out a large number of product plates using a punch press, each product plate is cut out leaving a small uncut portion called a microjoint for the purpose of feeding the plate while holding one side of the material plate with a work holder. After processing, a micro joint may be cut to separate a product plate from a raw plate.
When such a processing method is used, every time a single product plate is separated, when the unloaded product plate is carried out by the unloader, the processing performed by the punch press during the reciprocation of the unloader is performed by separating the micro joint. Only in a short time. Therefore, the waiting time of the punch press waiting for the arrival of the unloader becomes longer, and the cycle time for carrying out the product becomes longer. Conventionally, a plate material transfer device that serves both as a loader and an unloader is sometimes used.However, the conventional dual-purpose device cannot shift to preparation for loading the material plate material until the product is completely unloaded. There was a problem that the cycle time required for unloading was long.

An object of the present invention is to solve such a problem and to provide a sheet conveying apparatus capable of improving the cycle time without delay in sheet conveying even when the processing time is short. It is another object of the present invention to provide an apparatus which can serve both to carry out a product plate material and carry in a material plate material, and to reduce a cycle time from material supply to product discharge. Still another object of the present invention is to enable a small product plate to be carried out at a high speed and a large material plate to be carried in.

[0005]

According to the present invention, there is provided a plate material transporting apparatus including a plurality of plate material holding traveling bodies which can hold a plate material and can rotate between a plate material processing machine and a plate material storage area. Among these plate material holding traveling bodies, while one or more plate material holding traveling bodies carry out the plate material from the plate material processing machine to the plate material accommodating area, another sheet material holding traveling body moves from the plate material processing machine to the sheet material accommodating area. The board can be carried out. According to this configuration, since the plurality of plate material holding traveling bodies orbits, while some plate material holding traveling members carry out the plate material, another plate material holding traveling body can start carrying out the next plate material. . Therefore, even when the separation time when sequentially separating a plurality of product plates from one material plate or the processing time is short, the product plates can be carried out without delay, and the cycle time can be improved.

[0006] In the above structure, the plate material holding and traveling body may also have a function of carrying the plate material from the plate material storage area to the plate material processing machine. In this configuration,
Although the board holding and traveling body is used for both loading and unloading, the board holding and traveling body orbits, so that the board can be carried in parallel with the carrying out of the board. For example, while one sheet material holding traveling body unloads a product sheet material, another sheet material holding traveling body holds a new material sheet material in the sheet material accommodation area and waits near the sheet material processing machine to hold the product sheet material. When the plate material holding and moving body is separated from the plate material processing machine, the material plate material can be immediately carried in.
Therefore, no wasteful time is generated between the carry-out of the plate material and the carry-in of the plate material, and the cycle time is further improved. In addition, the plate material holding and traveling body serves both for carrying in and for carrying out, so that the configuration is simplified. In the case where the plate material holding traveling body is used for both loading and unloading as described above, the plate material holding traveling body holds each part of the same plate material with a plurality of plate material holding traveling members arranged in the circumferential direction. It may be transportable. In the case of this configuration, the small product is carried out by a single plate material holding and traveling body, and the large material plate material is carried in by a plurality of plate material holding and traveling bodies. Therefore, one type of plate material holding and traveling body can carry out and carry in from small products to large-size materials. In addition, small products can be carried out at high speed, unlike a large product that travels with a heavy equipment.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in the plan view of FIG. 1, a plate material storage area 2 is provided on the side of the plate material processing machine 1, straddles the plate material processing machine 1 and the plate material storage area 2, and has a plate material (material plate material W 1) therebetween. , Product plate material W2 and skeleton W
A plate material transfer device 3 for transferring 3) is provided.

The plate processing machine 1 includes a work table 4 on which a plate is placed, a processing section 5 for processing the plate on the work table 4, and a plate feeder 6 for moving the plate on the work table 4. The plate material feeding device 6 is provided with a cross slide 10 movably in the left-right direction (X-axis direction) on a carriage 9 that moves in the front-rear direction (Y-axis direction) on the rail 8 of the lower frame 7. Are mounted on the cross slide 10. The left-right direction (X-axis direction) is a plate material processing machine 1
And the plate material storage area 2. The work table 4 has a pair of fixed tables 4b separated from each other on both sides of a center fixed table 4a, and a movable table 4c that moves back and forth together with the carriage 9 is provided between the center and the side fixed tables 4a and 4b. It is a thing.

The processing section 5 is installed on the upper frame 12 and the lower frame 7 above the central fixed table 4a, and is covered with a body cover. This sheet material processing machine 1
The processing unit 5 comprises a pair of upper and lower turrets 13 and a punch driving mechanism for hitting a punch die (not shown) held at a plurality of circumferential positions of the turret 13 at a predetermined punch position P. (Not shown). In the processing unit 5, a sub-head 14, which is another processing head, is installed near the turret 13 alongside the punch position P. Sub head 14
Is a means for separating the product plate W2 which has been processed from the outer periphery of the plate W1 and is partially connected to the plate W1 by a so-called microjoint, from the plate W1;
It is composed of a dedicated punch mechanism.

In the plate material storage area 2, a material truck 21 for loading the material plate material W1, a product truck 22 for loading the product plate material W2, and a remaining material truck 23 for loading the skeleton W3 as the remaining material are processed by the plate material processing. It is provided side by side in the direction orthogonal to the direction in which the machine 1 and the plate material storage area 2 are arranged. The skeleton W3 is converted from the material plate W1 to the product plate W2 by the plate processing machine 1.
Is the remaining material on the outer periphery of the cutout.

The sheet conveying device 3 includes a loop-shaped orbit 24 which is provided so as to extend from above the sheet processing machine 1 onto the sheet accommodating region 2, and a plurality of sheet holding and traveling bodies orbiting along the track 24. 25. The track 24 is, in detail, composed of an erect rail, and one of the plate processing machines 1 (the left side in the figure).
Is installed over the plate material storage area 2 from above the fixed table 4b. The plate material transporting device 3 includes a plate material accommodation area 2
Means for carrying the material plate material W1 from the material carrier 21 into the plate material processing machine 1, means for holding the product plate material W2 processed by the plate material processing machine 1 and carrying it out onto the product carrier 22, and The unit also serves as a means for transporting the skeleton, which is the residual material generated by the cutting, to the residual material truck 23.

FIG. 2 (A) is a plan
As shown in a side view and a front view in (B), there is provided a traveling body 26 installed so as to be able to travel along the track 24, and a plate material holding means 28 installed on the traveling body 26. The plate material holding means 28 is installed on the traveling body 26 via a lifting mechanism 27 so as to be able to move up and down. The plate holding means 28 may be any as long as it can hold the plate, but in this example, a plurality of suction pads 29 are mounted on the pad support frame 28a in a plane. Each suction pad 29 is for sucking a plate material. In this example, the suction pad 29 is a vacuum suction pad, and is connected to a negative pressure generating means (not shown) such as a vacuum pump by piping. Each suction pad 29 may be of a magnetic type that attracts by magnetic force.

A description will be given of the operation of transporting the sheet material in the sheet material processing equipment having the above-described configuration. At the time of material loading, the plate material transporting device 3 holds the material plates W1 loaded on the material carrier 21 in the plate material storage area 2 one by one, and carries them into a predetermined position on the work table 4 of the plate material processing machine 1. At this time, since the material plate material W1 is large, each part of the same plate material is held by a plurality (three in this case) of plate material holding traveling members 25 arranged in the traveling direction, and the plate material holding traveling members 25 are synchronously controlled at the same speed. Run and transport.

As described above, since the large material plate W1 is carried in by the plurality of plate holders 25, the plate holder W2
Even if 5 has a small and simple configuration, the material plate W1 can be carried in without any trouble.

After that, the plate material holding and traveling body 25 used to carry in the material plate material W1 stands by at a predetermined standby position on the track 24 corresponding to a position before the predetermined product take-out position on the work table 4. In the plate material processing machine 1, when the product plate material W2 is cut off, the product plate material W2 is held by one waiting plate material holding and traveling body 25, and the plate material holding and traveling body 25 orbits along the track 24, It is carried out onto the product cart 22 in the plate material storage area 2. Product sheet material W2
For example, at the punch position P of the processing section 5 of the plate processing machine 1, the outer peripheral processing is performed from the raw material plate W1 and a part thereof is connected to the raw material plate W1, and is separated by the sub head 14.

As described above, since the small product plate material W2 is carried out by one plate material holding traveling body 25, the product material plate material W2 can be carried out at high speed by using the plate material holding traveling body 25 as a small and simple structure. Can be.

When the product plate material W2 carried out by the plate material holding and traveling body 25 is loaded on the product truck 22, the product truck 22 is, for example, X to sort on the product truck 22 according to the type. The position can be changed in the direction.

According to the plate material transporting device 3, the time interval for sequentially separating the product plate material W2 from the material plate material W1 in the plate material processing machine 1 is short, and the product plate material W2 separated from the material plate material W1 is conveyed to the product carriage 22. By the time, even if the next product plate material W2 is cut off, the next waiting plate material holding and traveling body 25 holds this product plate material W2 and travels toward the product carriage 22. Thus, the product plate material W
By the time the second product plate material W2 is cut off by the time the second product plate material W2 is separated, the product plate material W2 is immediately held and carried out by the next plate material holding and traveling body 25, so that there is no delay in carrying out the product plate material W2. Cycle time is improved. The plate material holding and traveling body 25 that has finished carrying out the product plate material W2 is further circulated to be used for carrying out the next product plate material W2.

Further, since the skeleton W3, which is the remaining material obtained by cutting the product plate material W2 from the material plate material W1 and having a large outer shape, has a large outer shape, a plurality of (two in this case) plate materials holding each part of the remaining material in the running direction are arranged. The sheet is held and transported by the traveling body 25 and is carried out onto the remaining material truck 23 in the plate material storage area 2.

On the other hand, for example, at the stage where the last product plate material W2 cut off from one material plate material W1 is carried out or the stage where the skeleton W3 is carried out, a new material plate material W1 is carried into the plate material processing machine 1. Since it is necessary, in parallel with unloading of the product plate material W2 and the skeleton W3, the plate material holding member 25 carries the material plate material W1 into the plate material processing machine 1 as described above. Thus, the product sheet material W
In parallel with the unloading of the skeleton 2 and the unloading of the skeleton W3, the next necessary plate material W1 can be loaded, so that the cycle time is further improved. In addition, since one device can be used for both loading and unloading of the plate material, the configuration of the device is simplified.

FIG. 3 shows another embodiment of the present invention.
In this embodiment, a bypass 30 is added to the loop-shaped track 24 of the plate material transporting apparatus 2 in FIG. This bypass 30 is provided at the position of the material truck 21 on the track 24 or the material plate W1.
Is short-circuited at a position where the plate material holding and traveling body 25 holding the sheet is waiting before being carried into the plate material processing machine 1. In the example shown in the drawing, the bypass 30 is moved from a position slightly past the position corresponding to the product trolley 22 in the plate material storage area 2 toward the material trolley 21, from the work table 4 of the plate processing machine 1.
It is a path connecting the above product unloading standby position. FIG.
Other configurations in this embodiment are the same as those in the previous embodiment, and the same parts are denoted by the same reference numerals and description thereof is omitted here.

In this embodiment, since the bypass 30 is added, a plurality of plate materials W1 on the material plate carriage 21 are held at the position on the material truck 21 in the track 24 of the plate material transfer device 2. Holding traveling body 25
The plate material holding and traveling body 25 that has finished carrying out the product plate material W2 from the work table 4 onto the product carriage 22 can be circulated to the product carryout standby position via the bypass 30. Therefore, the material plate W1
In parallel with the start of unloading of the last product plate material W2 cut out from the container, a new material plate material W1 can be loaded, and the time between the unloading of the product plate material W2 and the transfer of the material plate material W2 can be reduced. Waste can be avoided, and the cycle time can be improved accordingly.

Although the track 24 is an erect rail in the plate material transporting device 3 of each of the above embodiments, the track 24 may be a rail on the floor surface, a signal providing path for guidance, a control It may be a conceptual trajectory defined in.
For example, as shown in FIG. 4, a guide track 31 such as a magnetic track may be provided, and the plate material W may be loaded and unloaded by the plate material holding and traveling body 25 </ b> A that moves while being guided by the guide track 31. The plate material holding traveling body 25A is the traveling body 26,
The provision of the elevating mechanism 27 and the plate material holding means 28 is the same as in the previous embodiment.

[0024]

The plate material unloading device of the present invention includes a plurality of plate material holding traveling members which can move around the plate member between the plate material processing machine and the plate material accommodating region, the plate members holding the plate material, and one or more plate material retaining members are provided. While carrying out the plate material from the plate material processing machine to the plate material storage area, another plate material holding traveling body can carry out the plate material from the plate material processing machine to the plate material storage area, so that a plurality of product plate materials are sequentially cut from one material plate material. If the disconnection time is short,
Even when the processing time is short, the product plate can be carried out without delay, and the cycle time can be improved. When the plate material holding traveling body is configured to also have a function of carrying a plate material into the plate material processing machine from the plate material storage area,
The plate material can be loaded and unloaded in parallel with the unloading of the plate material, and the loading and unloading can be performed with a single device, so there is no wasted time between the unloading of the plate material and the loading of the plate material, and the cycle time is further improved. Also, the configuration is simplified. Further, in the case where the plate material holding traveling body is configured to be able to convey each part of the same plate material by holding the plurality of plate material holding traveling members arranged in the circumferential direction,
In addition to carrying out and carrying in from a small product to a large-sized material with one kind of plate material holding and traveling body, the plate material holding and traveling body can be made small and carried out at a high speed in the case of a small product.

[Brief description of the drawings]

FIG. 1 is a plan view of a sheet material processing facility including a sheet material processing apparatus provided with a sheet material transport device according to an embodiment of the present invention.

FIG. 2A is a side view showing a plate holding traveling body of the plate material transporting apparatus, and FIG. 2B is a front view of the plate holding traveling body.

FIG. 3 is a plan view showing a main part of a sheet material processing facility including a sheet material processing apparatus provided with a sheet material transport device according to another embodiment of the present invention.

FIG. 4 is a front view showing a plate holding traveling body of a plate conveying apparatus according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sheet material processing machine 2 ... Sheet material accommodation area 3 ... Sheet material transport device 24 ... Track 25, 25A ... Sheet material holding traveling body W1 ... Sheet material W2 ... Product sheet material W3 ... Skeleton

Claims (3)

[Claims] A plurality of plate material holding traveling bodies that hold a plate material and can rotate around between a plate material processing machine and a plate material accommodating area, and at least one plate material holding traveling body receives the plate material from the plate material processing machine. A sheet conveying device which allows another sheet material holding traveling body to carry a sheet material from the sheet material processing machine to the sheet material accommodating area while being carried out to the area. 2. The plate material transporting device according to claim 1, wherein the plate material holding and traveling body also has a function of carrying the plate material into the plate material processing machine from the plate material storage area. 3. The plate material transporting device according to claim 2, wherein the plate material holding traveling body is capable of holding and transporting each part of the same plate material by a plurality of plate material holding traveling members arranged in a circumferential direction.