JPH0569645B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a sizing vise device for various saw machines such as a bandsaw machine and cutting machines such as a grindstone cutting device.

<Background of the Invention> In recent years, cutting machines such as band saws have become increasingly computer-controlled, making it possible to automatically cut a desired number of long materials into a plurality of desired cutting lengths. It has become possible to
Furthermore, automation of cutting material processing has been achieved, and unmanned operation is becoming possible. In order to operate the cutting machine unmanned for a long period of time, a device is required that automatically supplies the material to be cut in sequence. In this unmanned operation including automatic supply of material, when transferring the material between the material feeding device and the sizing means on the cutting machine side, it is necessary to accurately set the initial position of the material, and at the same time set the sizing device. An important issue is to perform the material clamping operation smoothly.

The present invention has been made in view of this point, and is a sizing vise device for a cutting machine that has a simple structure and can accurately and automatically set the initial position of the material described above. intended to provide.

<Configuration of the Invention> The configuration for achieving the above object will be explained with reference to FIGS. 1, 2, 4, and 5 corresponding to the embodiments. A sizing vise 3 that can freely approach and move away from the sizing vise 3, and a sizing vise 3 that is disposed on the end surface side of the sizing vise 3 facing the material supply device P and that detects contact of the tip of the supplied material W. Detection means (for example, limit switch 4c, etc.)
and a control unit 5 that controls the opening/closing operation and sizing operation of the sizing vise 3, and the sizing vise 3 is set at a predetermined position A to at least the opening width of the material W to be cut. The material is placed on standby in a state narrower than the width b (Fig. 1), and the tip of the material W sent from the material supply device is brought into contact with the end face of the sizing vise 3 to position the material. Upon generation of the detection signal, the sizing vise 3 is advanced by a predetermined minute amount l in the feeding direction (Fig. 4), and after opening the sizing vise 3, it is moved back a predetermined distance to clamp the material W (Fig. 5). ), it is characterized by being configured to be fed into the main vise 2.

<Operation> The material W conveyed by the material supply device P is
The leading end surface of the sizing vise 3 comes into contact with the rear end surface of the sizing vise 3, which is waiting at a predetermined position A, and positioning in the material feeding direction is performed. Position setting will be performed. Sizing vise 3 after setting this initial position
In the clamping operation, the sizing vise 3 moves forward from position A by l in the feeding direction to eliminate contact with the tip surface of the material W, and then opens the vise jaw. No problems such as wear or deterioration occur.

<Example> Examples of the present invention will be described below based on the drawings.

FIG. 1 is a plan view of a mechanical portion of an embodiment of the present invention and a system block diagram of a control section 5, and FIG. 2 is a longitudinal sectional view of the mechanical portion.

A main vice 2 is disposed on a base 1 along the cutting surface S of a cutting machine, for example, a band saw, and this main vice 2 is opened and closed by a cylinder 2a in a direction perpendicular to the material feeding direction. The material to be cut can be clamped and released.

A sizing vise 3 that can be opened and closed in the same direction as the main vise 2 by a cylinder 3a is arranged behind the main vise 2. This sizing vise 3 is attached to the base 1 along the material feeding direction. It is slidably supported on a rail 3b laid in the main vise 2, and can be moved toward and away from the main vise 2 by driving the sizing cylinder 3c. The amount of forward/backward displacement of the sizing vise 3 is detected by engaging the rotary encoder 3e provided on the side surface of the sizing vise 3 with the base 1 using a rack and pinion (not shown) or the like. .
Furthermore, a limit switch 3f is provided on the base 1 to detect the forward limit of the sizing vise 3.

Behind the base 1, there is a material W such as steel to be cut.
A material feeding device P for sequentially supplying the materials is disposed, and the end face of the sizing vise 3 on the material feeding device P side is
A detection mechanism 4 is provided for detecting that the tip of the material W has come into contact with this end surface, that is, the completion of material feeding. This detection mechanism 4 is elastically regulated in its posture by a spring 4a so as to protrude slightly outward from the above-mentioned end face of the sizing vise 3, and is rotated by contact with the tip of the material W. Rotating piece 4 to be displaced
b, and a limit switch 4c that detects the rotation of this rotating piece 4b.

The above-mentioned material feeding device P is driven in a direction perpendicular to the longitudinal direction of the material, and includes a plurality of horizontal pushing vertical rollers 101, each of which is rotatable around a vertical axis.
A plurality of chain conveyors 10...10 (first
(Only one is shown in the figure, the others are omitted), a driving vertical roller 11 disposed facing the rollers 101...101 near the running path of the chain conveyor 10...10, and this driving vertical roller 11 It is composed of rotatable guide vertical rollers 12 and the like having a common tangential plane parallel to the material feeding direction, and is inserted between the horizontal pushing vertical rollers 101...101 of each chain conveyor 10...10. material W,
After conveying the material in a direction perpendicular to the longitudinal direction by driving the chain conveyors 10...10, the material W is pressed in its posture by a horizontal push vertical roller 101, a driving vertical roller 11, and a guide vertical roller 12. By rotationally driving the drive vertical roller 11 in a regulated state, the material can be conveyed in the longitudinal direction.

The control unit 5 is for controlling the band saw itself and the material feeding device P in addition to the sizing vise device 3, and is mainly composed of a microcomputer, and is responsible for executing programs and controlling each peripheral device. A CPU 51 for performing the cutting, a ROM 52 in which a program to be described later is written, a RAM 53 for storing data such as the cutting length and number of cuts by the band saw, a keyboard 54 for inputting these data, and an input/output for connecting with external equipment. It is equipped with an interface 55. The input/output interface 55 receives the contact signals of the limit switches 4c and 3f described above and the output signal of the rotary encoder 3e, as well as output signals from various sensors in the bandsaw machine and material feeding device P. . In addition, from the input/output interface 55,
Drive control signals for cylinders 2a, 3a and sizing cylinder 3c, control signals for various actuators in the band saw machine, and chain conveyor 10...10
A control signal for the driving vertical roller 11 is output.
Note that the drive control signals to the cylinders 2a, 3a and the sizing cylinder 3c are actually output to each directional control valve in the hydraulic circuit for driving these, but they are not shown in FIG. is omitted.

FIG. 3 is a flowchart showing the program written in the ROM 52, and the operations and effects of each part will be explained below with reference to this diagram.

After cutting one piece of material W by repeating the sizing of the material with the sizing vise 3 based on the data in the RAM 53 and the cutting cycle of the band saw, a command is issued to the material feeding device P to start the next one. The feeding operation of the material W is started. At the same time, the sizing vise 3 is moved to a preset position A in a closed state.
FIG. 1 shows this state.

When the leading end of the material W comes into contact with the rear end surface of the sizing vise 3 due to the rotation of the driving vertical roller 11 of the material feeding device P, the limit switch 4c is turned on and the driving vertical roller 11 is stopped. As a result, the tip of the material W is positioned at the position A. Next, as shown in FIG. 4, move the sizing vise 3 from position A to position B, which is advanced by a predetermined minute amount l,
A gap is created between the material and the tip of the material W. Then the fifth
As shown in the figure, the sizing vise 3 is opened and then retreated to a predetermined position C, at which the material W is clamped. The sizing vise 3 that has finished clamping the material W is advanced to its forward limit, and after pushing out the last remaining material remaining in the main vise 2 with the tip of the current material W, the main vise 2 clamps the material W. The first cut is usually to cut off the material. Then, from the second time onwards, a cycle of fixed size cutting is started based on the data in the RAM 53. Of course, it is also possible to start cutting to size from the first time without performing the above-mentioned edge cutting. As sizing cutting progresses and the material W becomes shorter, as shown in FIG. 6, when the sizing vise 3 is no longer able to grip the material W at the retracted position D, the sizing vise 3 is moved as shown in FIG. It is closed and moved forward to position E where the advance limit switch 3f is turned on, and when the rear end of the material W is pushed out with the front end of the sizing vise 3, the process for one piece is completed.

In the above embodiment, the sizing vise 3 was fully closed when pushing out the rear end of the shortened material W and during the subsequent standby at position A, but at least the leading end surface of the material activated the detection mechanism 4. It may be configured to close to a state that is narrower than the clamping width b of the material W to some extent. Further, the detection mechanism 4 can be replaced with a proximity switch in place of the limit switch 4c, or with another known detection mechanism using a touch switch, a ground contact, or the like. Furthermore, it goes without saying that the present invention can be applied to various saw machines and other cutting machines in addition to band saw machines.

<Effects of the Invention> As explained above, according to the present invention, it is configured to be attached to the main vise of a cutting machine so as to be able to approach and separate from it,
A detection means capable of detecting contact of the tip end surface of the material is provided on the end face of the material feeding device side of the sizing vise for pinching and feeding the material to be cut, and the sizing vise is used to clamp and feed the material at least. Wait at a predetermined position with the material closed to a state narrower than the width, and after positioning the material supplied from the material supply device by making it contact the end surface of this sizing vise, turn the sizing vise. The structure is such that the material is moved forward by a predetermined minute amount, then moved backward by a predetermined distance after opening the fixed-size vise, and the positioned material is clamped and fed into the main vise. Without providing a position setting mechanism, the first cutting position of the material can always be accurately set with a simple configuration, and the cutting machine can operate unattended for a long period of time.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a plan view of a mechanical part of an embodiment of the present invention and a system block diagram of a control unit 5,
Figure 2 is a vertical cross-sectional view of the mechanism, and Figure 3 is a longitudinal cross-sectional view of the mechanism.
Flowcharts showing programs written in the ROM 52, FIGS. 4, 5, 6 and 7
The figure is an explanatory view of the position of the sizing vise 3 at each point in time. 1...Base, 2...Main vice, 2a...Cylinder, 3...Sizing vise, 3a...Cylinder, 3b
...Rail, 3c...Sizing cylinder, 3e...
Rotary encoder, 3f... limit switch for forward limit detection, 4... detection mechanism, 4a... spring,
4b...Rotating piece, 4c...Limit switch for detecting completion of material feeding, 5...Control unit, 51...CPU, 5
2...ROM, 53...RAM, 55...Input/output interface, P...material feeding device, 10...chain conveyor, 101...101...lateral push vertical roller, 11...drive vertical roller, 12 ...Guiding vertical roller, S...Cutting surface.

Claims (1)

[Claims] 1. A device for pinching and feeding the material to be cut, which is supplied from a material feeding device connected to a cutting machine, to a main vise so as to obtain a preset cutting length, A sizing vise that can freely approach and move away from the main vise, and a detection means that is disposed on the end surface side of the sizing vise that faces the material feeding device and detects contact of the tip surface of the supplied material. and a control unit for controlling the opening/closing operation and sizing operation of the sizing vise, and the opening width of the sizing vise at a predetermined position is at least the clamping width of the material to be cut. The tip of the material sent from the material feeding device is brought into contact with the end face of the sizing vise to position the material, and then a detection signal of the contact is generated and the sizing vise is stopped. A cutting machine characterized in that the vise is moved forward by a predetermined minute amount in the feeding direction, and after opening the sizing vise, it is moved back a predetermined distance to clamp the material and feed the material into the main vise. Sizing vise device for use.