JPH05309519A - Cutter for long material - Google Patents

Abstract

PURPOSE:To cut materials of different lengths from a long material so as to provide the minimum, useless cut end. CONSTITUTION:A long material cutter is constituted of a computer 25 which finds such a combination as to provide the shortest cut end in the material cutting design based on the data of different dimensions and numbers got from cutting a long material 1, stores, and controls it, a locating device 4 which is controlled by the computer and sets a location of the long material fed in by a feeding device 3, and a cutter 2 which cuts the long material which is made to locate by the locating device so as to stop, at the prescribed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a material from a long material to a predetermined size, and particularly for cutting a long material capable of cutting waste material to a minimum length during material removal. Regarding the device.

[0002]

2. Description of the Related Art For example, in order to obtain a material having various lengths suitable for the purpose of use from a long pipe material, the length of the long material and the length and the number of the material of the material to be obtained are to be obtained. Considering the combination, it is desirable to cut with the shortest scrap being the shortest.

Conventionally, materials having the same size are continuously cut from one long material due to facility restrictions. Therefore, the mill ends produced after cutting all the materials of the same size are processed as scrap from the viewpoint of work efficiency even though they are sizes that can be collected as materials of other sizes, and the yield is poor. is doing.

[0004]

Therefore, in order to reduce the amount of end material by the conventional equipment, the calculation is performed for each long material, and the cutting position of the long material is marked accordingly. If you do not follow the procedure such as cutting, you can not minimize the scrap material, resulting in extremely low work efficiency, and when obtaining a large amount of material of different length, you need a lot of time and effort for cutting. In addition, it is inefficient, and it is difficult to cut effectively with the minimum length of end material, and the efficiency of material removal is unavoidable, and it is impossible to cut a large number of various materials efficiently. Met.

In view of this, it is an object of the present invention to provide a long material cutting device capable of cutting materials of different lengths from a long material most efficiently and with high efficiency so as to minimize waste scraps. It was made as.

[0006]

SUMMARY OF THE INVENTION The present invention has an object to solve the problems of the above-mentioned conventional techniques. The present invention uses the data of different sizes and the number of pieces obtained by cutting from a long raw material to obtain the most scrap material. Calculate the combination that makes the length shorter,
A computer that stores and manages this, a positioning device that is controlled by this computer and determines the stop position of the long material fed by the feeding device, and a predetermined position of the long material that is positioned and stopped by this positioning device is cut. A cutting device is provided.

[0007]

[Function] Based on the order from the customer in advance, the size and number of materials to be cut are input as data to the computer based on the length of the long material, and the combination that minimizes the length of the end material is selected. A computer controls the positioning device that determines the feeding position of the long material at the time of cutting the long material, determines the cutting position by the computer, and sequentially cuts the waste material to minimize the waste. Further, the size and the number of cut pieces are fed back to the computer for each cutting, and the progress status is constantly monitored by storing, updating and displaying the data of the material and the size for which the updating and cutting of the data is completed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 shows an outline of an embodiment of the present invention. A cutting device 2 for cutting a long material 1 (a pipe material in this example) by pressing is installed at the center, and a long device is provided on one side thereof. The feeding device 3 for the scale material 1 is provided with positioning positions 4 for determining the cutting length on the other side.

In the cutting device 2 in the illustrated embodiment, two cutting blades 7 and 8 are arranged in parallel at the lower part of a head 6 which is vertically movable along a machine frame 5 which is fixedly installed. In the cutting blade 7, the tip of the blade portion 7a is sharply formed and a slit is punched in a pipe which is the long material 1, and the second cutting blade 8 has the width of the blade portion 8a of the long material 1 Is slightly wider than the diameter of the first cutting blade 7 and enters from a slit punched by the first cutting blade 7 to advance and finally separate.

The cutting blades 7 and 8 are moved relative to the head 6 in the direction of arrow a by a driving means such as an air cylinder 9 and alternately positioned at the cutting position.
The entire head 6 is pressed down by the crank press 10.

Clampers 12, 12 for clamping the long material 1 at the time of cutting are provided opposite to each other on a base 11 near the vertical movement positions of the cutting blades 7, 8 and are not shown at the time of cutting. The moving device opens and closes in the direction of arrow b.

In the feeding device 3 for the long material 1, a pushing member 13 for chucking and pushing the rear end of the long material 1 is fixed to a turning member 14 such as a chain that turns endlessly. The long material 1 is fed in the direction of arrow c by driving. The tip side of the long material 1 is supported by an appropriate support roll 16 or the like.

The positioning device 4 has a stopper member 17 with which the tip of the long material 1 abuts.
Is supported by a supporting member 19 which is movable along the guide rods 18, 18, and the supporting member 19 serves as a servo motor 20.
The screw shaft 21 that is rotated by is screwed so that the support member 19 is moved back and forth in the direction of arrow d according to the amount of rotation of the servomotor 20.

A chute 2 is provided on the side of the positioning device 4.
2 is provided so as to be inclined downward to the outside, and a conveyer 23 is disposed below the conveyer 23 so as to receive the cut material and convey it to the arrow e. Pushers 24, 24, ... For sorting the cut material by length are arranged on the side of the.

The servo motor 20 is a computer 25.
Controlled by. The computer 25 has a memory for calculating whether different lengths obtained by cutting from the long material 1 in advance and the number thereof can be acquired without leaving the end material most, and storing the dimension thereof. Based on the (program), the rotation amount of the servo motor 20 is controlled to determine the stop position of the stopper member 17. For the calculation, allow a cutting allowance of about 4 mm.

Therefore, while the long material 1 having a predetermined length is set on the feeding device 3, the servo motor 20 is rotated by a predetermined amount according to an instruction from the computer 25, and the position of the stopper member 17 is determined. The leading end of the long material 1 fed thereafter is stopped by hitting the stopper member 17, and the long material 1 is clamped by the kun rampers 12, 12.

Then, the crank press 10 operates and the first
Slit-like perforation is performed on the long material 1 by the cutting blade 7 of FIG. 1, the head 6 is once lifted and returned, and then the air cylinder 9 is actuated so that the second cutting blade 8 is positioned directly above the long material 1.
The crank press 10 operates again to push the long material by the second cutting blade 8.

The cut material is transferred onto the conveyer conveyor 23 through the chute 22, and when it is sent backward, when the pusher 24 reaches the position of the pusher 24 corresponding to the length of the material, the pusher 24 operates to convey the material. The material is discharged from the top of the conveyor 23 to the side of the conveyor 23 and is collected in the material storage section for each length.

In the meantime, the stopper member 17 moves to a position corresponding to the length of the next material to be cut, the next cutting position is determined, and the cutting is performed in the same manner as described above.

In the above embodiment, since it is assumed that the long material 1 is a pipe material, the cutting device 2 uses two cutting blades 7 and 8 for push-cutting. When it is an empty round bar or square bar material, it can be a sawing machine using a circular saw regardless of press cutting. Further, the specific configuration of each unit is not limited to the illustrated embodiment, and it goes without saying that other design changes can be made.

Next, reference will be made to an example of material removal.

For example, in the case of obtaining materials of A dimension and B dimension, conventionally, 6 materials of A dimension to 6 of 5500 mm long material 1 as shown in FIG. 2 and 13 materials of B dimension as shown in FIG.
In the case of the A dimension material of FIG.
In the case of the size, a scrap B'is produced. One piece of material of B size can be taken from the end material A ′, but this end material A ′ must be dimensioned of B size and separately cut. Therefore, new labor is required.

In the present invention, as shown in FIG. 4, the length of the end material c is minimized by taking one long material 1 to 5 pieces of material of A dimension and 4 pieces of material of B dimension. Becomes The length is A, B, C, D, E, and A, B, C
When the number of cuts in B satisfies the planned number, the cutting is performed in the combination of A, C, D, and E.

By thus calculating the combination of the dimensions of the materials to be sampled according to the length of the long material 1, it is possible to minimize the amount of scrap material and to prevent waste of materials.

[0026]

As explained above, according to the present invention, the length of the end material is determined based on the length of the long material and the length of the material to be cut and the number of pieces to be cut based on the contents of the order. The combination of shortening is calculated by the computer and stored in the computer, and the positioning device that determines the feeding position of the long material is controlled by the computer when cutting the long material, so that many materials with different lengths are obtained. In this case, the length of the scraps can be minimized while being able to cut automatically without dimensioning one by one.
In addition to a great improvement in work efficiency, it is possible to improve the efficiency of material taking, the waste of material is drastically reduced, the yield is improved, and the cost is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a conventional material removal mode.

FIG. 3 is an explanatory view showing another aspect of conventional material removal.

FIG. 4 is an explanatory view showing one aspect of material removal in the present invention.

[Explanation of symbols]

 1 Long Material 2 Cutting Device 3 Feeding Device 4 Positioning Device 7, 8 Cutting Blade 10 Crank Press 12 Clamper 13 Pushing Member 17 Stopper Member 20 Servo Motor 21 Screw Shaft 22 Chute 23 Transport Conveyor 24 Pusher 25 Computer

Claims (1)

[Claims] 1. Different kinds of dimensions obtained by inputting the order data of the required number of pieces having the same material, the same inner and outer diameters and different cutting lengths from the customer, and cutting the long material based on this data. A computer that manages this data by finding the combination that minimizes the length of the end material when taking the number of materials
A positioning device for controlling the stop position of the long material fed by the feeding device controlled by the computer, and a cutting device for cutting a predetermined position of the long material positioned and stopped by the positioning device are provided. Long material cutting device.