JPS6037222Y2 - Board cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plate cutting device, and particularly to a device for cutting unnecessary portions of the edges of a steel plate.

Conventionally, plate materials that require high flatness, such as stainless steel plates, are subjected to a straightening operation that involves stretching them by 0.8 to 1.3% of the plate length using a stretcher.

As a result, in the plate material 1 as shown in FIG. 1, the width of the central part IC in the longitudinal direction is slightly reduced and deformed compared to both the front and rear ends 1a and lb, so that the unnecessary parts d of both ears are As shown by the dotted chain line (two cuts and removal operations are required).

Conventionally, cutting the unnecessary parts of the edges of such boards has been carried out manually by many people using gap shears, which requires considerable skill, is inefficient, and poses safety issues. Since these products are often used as products, surface flaws that occur during cutting operations are also a serious problem.

The purpose of the present invention is to solve the above-mentioned problems.The purpose of this invention is to use a conveying roller table that supports the plate material, and to cut both edges of the plate material conveyed onto this roller table in the width direction of the roller table. A rotary cutting machine provided separately, a front end and a rear end clamp device provided to grip the front end and rear end of a plate material on a roller table at an intermediate position between both ears, and the front end clamp device. A device that drives the roller table forward in the length direction;
The forward drive device is equipped with a braking device that applies a braking force to the forward movement of the rear end clamp device caused by the forward tensile force applied to the plate material, and the plate material is automatically conveyed onto the conveyor roller table while applying a tensile force to the plate material. The present invention aims to provide a high-efficiency, high-precision automatic cutting device suitable for cutting the edges of plate materials such as stainless steel plates, so that unnecessary portions of both edges of the plate material can be cut and removed at the same time. be.

Hereinafter, the drawings of the present invention will be explained.

In FIGS. 2 and 3, reference numeral 2 denotes a conveying roller table, and its roller 3 has a stepped structure having large diameter linings 4 at both ends in the width direction to avoid interference with clamping devices 5 and 6, which will be described later. It is configured as follows.

Front and rear end clamping devices 5 and 6 are used to clamp and hold the front and rear ends of the plate material 1 supported on the roller table 2 at an intermediate position between both ears of the plate material, in the illustrated example, at a central position. upper clamp jaws 7 respectively engaged with
and a lower clamp jaw 8, the clamp jaw 7.
8 are connected to be actuated by fluid cylinder devices 9, 10, respectively, and the clamp jaws 7.8 and the fluid cylinder devices 9, 10 are suspended from upper front and rear end clamp transport devices 12.13 by struts 11, The clamp conveyance devices 12 and 13 are configured so that they can be moved by wheels 14 along highly accurate guide rails 15 in parallel to the plate conveyance surface of the roller table 2 above the table.

A drive device 16 such as a torque motor is attached to the clamp conveyance device 12 of the clamp device 5, and a braking device 17 such as a disc brake is attached to the clamp conveyance device 13 of the rear end clamp device 6. 16 and the braking device 17 are configured to engage and move with a rack 18 laid parallel to the guide rail 15.

In order to cut and remove unnecessary portions of both edges of the plate material 1, a rotary cutter 19, 20 such as a trimmer is installed on the roller table 2 so that both edges of the plate material 1 supported on the roller table 2 are simultaneously cut. They are spaced apart in the width direction.

The operation of the plate cutting device having the above-mentioned structure will be explained next.

A plate material 1, such as a stainless steel plate, from which unnecessary portions of both ears are to be cut and removed is straightened by a stretcher (not shown), and then conveyed onto a roller table 2 to a cutting location.

At the cutting site, when the board 1 is stopped at a fixed position on the roller table 2 and positioned at the center, the fluid cylinder devices 10 of the front and rear end clamping devices 5 and 6 are moved forward in the direction in which the board 1 moves downward. , the rear end clamping devices 5 and 6 move, and the clamping fluid cylinder device 9 operates to clamp the front and rear ends of the plate 1 by the front and rear end clamping devices 5 and 6, respectively, thereby preparing for cutting. ends.

Next, cutting is started, and the plate material 1 is cut along the imaginary cutting line e with respect to the cutter width of the cutting machine 10.20 which has been adjusted and set in advance, and the front and rear end clamping devices 5, 6, the plate material 1 is conveyed while the cutting speed driving device 16 and braking device 17 of the cutting machine 19, 20 follow the cutting speed in synchronization, and the plate material 1 is in a tensile state with its both ears d as shown in FIG. disconnect.

As shown in Fig. 6, the rear end of the plate material 1 is
After passing through, the cutting waste 21 is separated and the work of cutting and removing unnecessary parts of both ears is completed.

According to the present invention, both ears can be cut and removed at the same time by passing the board between the cutting machines once, and there is no need for manual intervention such as transporting and cutting heavy board materials, and the waist board material is under tension and high. It is conveyed and moved by a precision guide, and the effect is that the plate material can be cut safely, precisely, and with high efficiency.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a plate material and a virtual cutting line; Fig. 2 is a plan view showing the positional relationship between the plate material, conveyance roller table, and clamping device according to the present invention; and Fig. 3 is a side view of the cutting device according to the present invention. 4 to 6 are explanatory views of the operation of the cutting device of the present invention. 1... Plate material, 2... Conveyance roller table, 3... Roller, 4... Running, 5, 6... Clamp device, 7. Death...
... Clamp jaws 9, 10 ... Fluid cylinder device, 12.13 ... Front and rear end clamp conveyance device, 15 ... Guide rail, 16 ...
・Drive device, 17... Brake device, 18...
... Rack, 19.20 ... Cutting machine.

Claims (1)

[Scope of utility model registration request] A conveying roller table, a cutting machine provided at a distance in the width direction of the roller table so as to simultaneously cut both edges of the plate material conveyed on the roller table, and front and rear ends of the plate material on the roller table. a front end and a rear end clamp device provided to grip the front end clamp device at an intermediate position between both ears; a device for driving the front end clamp device forward in the length direction of the roller table; and a device for driving the front end clamp device forward in the length direction of the roller table; A plate cutting device comprising: a braking device that applies a braking force to the forward motion of the rear end clamping device caused by a forward tensile force.