JP4169808B2 - Sheet metal processing line processing machine assignment device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a processing machine allocating apparatus for a sheet metal processing line, and more particularly to a processing machine allocating apparatus for a sheet metal processing line that performs distribution for efficiently using a processing machine that performs a series of processing.
[0002]
[Prior art]
Conventionally, when a large number of small products are processed from a large size material on a sheet metal processing line, only the yield of the material in the original material is considered without much consideration for efficient processing machine allocation and processing order for various types of processing. Processing was carried out consciously.
[0003]
[Problems to be solved by the invention]
However, in such conventional technology, if the size of a small product is too small (or too large), it may not be possible to process due to restrictions on the structure and specifications of the processing machine in the line, or between the processing machines. There is a problem in that there is a case where it cannot be conveyed.
[0004]
In addition, there is a problem in that a product or a part that has been chamfered cannot be processed in the specified order in consideration of the processing order of the next process after being separated from the sheet material into the product.
[0005]
Furthermore, the present situation is that the machining tact in the plurality of machining steps is not leveled.
[0006]
The object of the present invention has been made by paying attention to the conventional techniques as described above, and assigns an optimal processing machine to each product processed in the sheet metal processing line and a processing shape portion in each product. An object of the present invention is to provide a processing machine allocating device for a sheet metal processing line that can perform a series of processing efficiently.
[0007]
[Means for Solving the Problems]
The present invention has been made in view of the above-described problems. A short-side shear (11) for cutting a short-side direction of a rectangular plate-shaped workpiece (W), and a long-side direction of the workpiece (W) A sheet metal processing line allocating apparatus for allocating the short side shear (11) and the long side shear (13) in the sheet metal processing line (1) having a long side shear (13) to be cut, In the control device (23) for controlling the sheet metal processing line (1), a memory (29) for recording a plate cutting result of each product part on the work (W), and storing in the memory (29) A program for creating a machining program for the short side shear (11), a machining program for the long side shear (13), and a workpiece movement program based on the obtained cutting results, and the machining program and workpiece movement program. The instruction unit for controlling the short side shear (11) and the long side shear (13) and a (41), downstream of said long sides Shah (13), performing cutting of the workpiece (W) by the product A punch press (19) provided with a sub-punch (21) for cutting out is provided, and the workpiece (W) cannot be cut by the short side shear (11) and the long side shear (13). In this case, the product is cut out by the sub punch (21) .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
FIG. 2 shows the entire sheet metal processing line 1. In FIG. 2, an automatic warehouse 3 is provided on the far left.
[0013]
In this automatic warehouse 3, a pallet P on which various workpieces W, products, etc. are placed is stored in shelves 5 provided in a plurality of rows and a plurality of rows, and one side of the shelf 5 (the lower side in FIG. 2). The pallet transfer crane 7 provided in the can be freely put in and out. On the other side of the shelf 5 (upper side in FIG. 2), a single-sheet picking device 9 for taking out and transporting one workpiece W from the desired shelf 5 is provided.
[0014]
Adjacent to the downstream side (right side in FIG. 2) of the automatic warehouse 3, a short-side shear 11 for cutting the short-side direction of the supplied workpiece W and a long-side shear 13 for cutting the long-side direction are provided. .
[0015]
On the downstream side of the long side shear 13, a transport device 15 for transporting the workpiece W transported to the long side shear 13 to the next processing machine is provided adjacently. A first punch press 17 and a second punch press 19 are provided adjacent to the downstream side of the transport device 15. The second punch press 19 is provided with a sub-punch 21 for product outline separation as disclosed in, for example, Japanese Patent Publication No. 7-112579.
[0016]
Although not shown on the downstream side of the second punch press 19, an unloading device for unloading halfway as necessary, and a reversing machine and a bending machine for further processing are provided. A control device 23 for controlling the entire line is provided in the vicinity of the sheet metal processing line 1.
[0017]
Next, the structure of the control apparatus 23 is demonstrated based on FIG. In the control device 23, an input means 27 such as a keyboard is connected to a CPU 25 which is a main processing device. Further, internally, a memory 29 as a storage means for storing input data, results of arithmetic processing, and the like, a processing machine sorting means 31 for selecting and allocating a processing machine to be used, and an NC data creation section as a program creation means 33, a part tracking information creation unit 35, a sheet processing schedule creation unit 37, and an arithmetic processing unit 39 are connected. In addition, a command unit 41 that controls the processing machine and the automatic warehouse 3 according to the calculation result is provided.
[0018]
Next, the processing machine allocation procedure of the sheet metal processing line 1 will be described with reference to FIG.
[0019]
First, general temporary machining paths (for example, shearing → punching → integration → general vendor → painting or shearing → punching → reversing machine → ironing bending → painting), workpiece dimensions, materials used, number of pieces, processing order, etc. The data is input as data by the input means 27 (step S1).
[0020]
These input data are appropriately stored in the memory 29 and can be used whenever necessary. In addition, the memory 29 stores the dimensional limit of each machine on the line and can be used as data at any time.
[0021]
Next, the processing machine distribution unit 31 performs grouping based on the data in the memory 29 (step S2). In this grouping, which part of which part on the material sheet is processed by which machine is determined.
[0022]
As described above, the provisional machining path is input at the time of input. However, when necessary, the path, the responsible machine, and the like are changed with reference to conditions such as the workpiece size limitation in each machine on the line. For example, even when the contour is cut, the short-side shear 11 or the long-side shear 13 is not used, but the sub-punch 21 of the second punch press 19 is used.
[0023]
Subsequently, a plate cutting design routine is performed, and the plate cutting results for each processing machine (here, the shearing machine 11 and the punch presses 17 and 19) are stored in the memory 29 so that they can be used as needed (step S3).
[0024]
FIG. 4 shows an example of cutting off each product part on the material sheet W. 4, A ₁ , A ₂ ,..., B ₂ ,..., C ₂ ,..., F ₄ , G ₄ represent parts of each product, and hatched portions mean scrap. In general, it is economical to scrap the board so as to reduce scrap, but even if there is a slight waste of material, the side of the material sheet W is the product to be processed first in consideration of the input processing sequence. In some cases, it may be preferable to increase the processing efficiency by arranging them on the side.
[0025]
Next, the NC data creation unit 33, the part tracking information creation unit 35, and the sheet processing schedule creation unit 37 serving as program creation means each perform machining and workpiece movement programs for cutting the contour from the material sheet W to each product part. Then, each machining program and workpiece movement program for processing the internal shape of the product part as it is or after being cut is created. An example of this result is shown in FIG.
[0026]
In FIG. 5, “-” indicates that it has not been passed because it has been carried out as scrap by the previous processing machine, and “pass” indicates that it has only passed through the processing machine and is not processed. In the term, “◯” represents cutting, and “x” represents not cutting.
[0027]
Referring to FIG. 5A, the contents of the machining program for the workpiece W picked up as shown in FIG. 4A are shown. In the short-side shear 11, the workpiece W is sent by Xt in the X-axis direction. Thus, the portion of the width Xt cut in the short side direction is discharged as scrap. Next, with respect to the remaining portion A ₁ after cutting the width Xt, the work W is fed by Yt in the Y-axis direction in the long-side shear 13 and cut in the long-side direction. Thereafter, although not described in detail, desired processing is performed by the first punch press 17 and the second punch press 19.
[0028]
Referring to FIG. 4 (B), the contents of the machining program for the workpiece W cut as shown in FIG. 4 (B) are shown. First, in the short side shear 11, cut by sending the work W in the X-axis direction by Xt in the short side direction, followed corresponding to A ₂ by cutting moved by Xa in the short side direction in the X axis direction Create a part. Further, a portion corresponding to B ₂ is created by moving by Xb in the X-axis direction and cutting in the short side direction, and finally moving to X ₂ in the X-axis direction and cutting in the short side direction to C ₂ . Create the corresponding part. At this time, the first cut portion of the width Xt is discharged as scrap, and there is no subsequent processing.
[0029]
Subsequently, in the long side shear 13, by cutting a portion corresponding to A ₂ moved by Ya in the Y-axis direction in the long side direction to create a A _2. Similarly moved by Yb create a B ₂ a portion corresponding to B ₂ in the Y-axis direction, a portion corresponding to the C ₂ moved by Yc in the Y-axis direction to create a C _2. Thereafter, although not described in detail, desired processing is performed by the first punch press 17 and the second punch press 19.
[0030]
Referring to FIG. 5C, the contents of the machining program for the workpiece W picked up as shown in FIG. 4C are shown. First, in the short-side shear 11, the workpiece W is fed by Xt in the X-axis direction and cut in the short-side direction.
[0031]
Subsequently, the long side shear 13 is moved by Yt in the Y-axis direction and cut in the long side direction. This part is not processed further and is discharged as scrap. Subsequently, A ₃ is created by moving in the Y-axis direction by Ya and cutting in the long-side direction. Further, a portion including B ₃ is created by moving by Ya in the Y-axis direction and cutting in the long-side direction.
[0032]
A ₃ , B ₃ , and C ₃ are processed by the first punch press 17 and the second punch press 19, and finally B ₃ and C ₃ are formed into a predetermined shape by the sub punch 21 of the second punch press 19. Disconnect.
[0033]
Referring to FIG. 5D, the contents of the machining program for the workpiece W cut as shown in FIG. 4D is shown. Since it is not appropriate to cut through the short side shear 11 or the long side shear 13 for such complicated and complicated plate cutting, the short side shear 11, the long side shear 13 and the first punch press 17 are through, cut out product to D ₄ ~G ₄ and conduct all cut by Sabupanchi 21 after performing a predetermined punching in a second punch press 19.
[0034]
Referring again to FIG. 1, subsequently, the sheet processing schedule is optimized by the arithmetic processing unit 37 (step S5). Here, the created NC data and the like are rearranged in accordance with the processing order, processing path, and material setup. Then, based on the obtained result, each process is performed by line control by the command unit 41 of the control device 23 (step S6).
[0035]
From the above results, in the case of an oversized product or a product with a complicated outline, it is transported between each processing machine in a state of being combined with adjacent scrap or adjacent product, and the desired contour is obtained in the final machine. Therefore, it is possible to convey and process regardless of the size of the product or the shape of the contour.
[0036]
Moreover, since each processing machine can use what is used conventionally, a special machine is not required and the cost increase of the whole line can be avoided.
[0037]
Furthermore, the operating rate can be improved by allocating the processing time in each processing machine to be uniform.
[0038]
In addition, by inputting the processing order of each product and part and using it as reference data for planing design, it is possible to expect a reduction in man-hours for identifying and sorting products and parts discharged from the processing machine after processing is completed. it can.
[0039]
The present invention is not limited to the above-described embodiment, and can be implemented in other modes by making appropriate modifications. That is, in the above-described embodiment, two punch presses 17 and 19 are provided in order to match the processing time, but the same applies to one or three units. However, it is necessary to use at least the final punch press (here, the second punch press 19) equipped with the above-described contour cutting sub-punch 21.
[0040]
In the above-described embodiment, the plate cutting is automatically performed. However, the plate cutting may be input as data in advance, and the processing machines that perform each processing may be automatically distributed.
[0041]
【The invention's effect】
As described above , according to the present invention, since the control device controls the processing machine according to the program created by the program creation means to perform a series of plate material processing, a series of plate material processing can be performed continuously. . At this time, since at least two processing machines for separating the parts from the plate material are provided, it is possible to allocate the parts so that the parts are separated using any of the processing machines according to the timing of separating the parts from the workpiece. Further, the processing efficiency can be improved, and the plate cutting efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a flow in a processing machine allocating device of a sheet metal processing line.
FIG. 2 is a plan view showing an embodiment of a sheet metal processing line according to the present invention.
FIG. 3 is a block diagram showing a configuration of a control device.
FIG. 4 is an explanatory view showing an example of a board removal.
5 is a table showing the contents of a program created by assigning processing machines to the plate cutting shown in FIG.
[Explanation of symbols]
1 Sheet metal processing line 9 Automatic warehouse (processing machine)
11 Short side shear (processing machine)
13 Long side shear (processing machine)
17 First punch press (processing machine)
19 Second punch press (processing machine)
23 Control device 27 Input means 29 Storage means 31 Processing machine sorting means 33 NC data creation section (program creation means)
W Work

Claims (1)

A sheet metal processing line comprising a short side shear (11) for cutting the short side direction of the rectangular plate-shaped workpiece (W) and a long side shear (13) for cutting the long side direction of the workpiece (W). A processing machine allocating device for a sheet metal processing line that performs the allocation of the short side shear (11) and the long side shear (13) in (1), the control device for controlling the sheet metal processing line (1) (23), a memory (29) for recording the cutting results of each product part on the workpiece (W), and the short side shear (11) based on the cutting results stored in the memory (29). Program creating means for creating a machining program and a machining program for the long side shear (13) and a workpiece movement program, and the short side shear (11) and the long side shear (by the machining program and the workpiece movement program). Comprising instructing section that controls 3) and (41), downstream of said long sides Shah (13), with a Sabupanchi (21) for performing extraction of the product by performing the cutting of the workpiece (W) When a punch press (19) is provided and the workpiece (W) cannot be cut by the short side shear (11) and the long side shear (13), the product is cut out by the sub punch (21). A processing machine allocating device for a sheet metal processing line, characterized by being configured to perform .

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