JPH06114440A - Self-traveling strain straightening device - Google Patents

Abstract

PURPOSE:To ameliorate a hydraulic cold straightening method for a work with strain generated by welding, to shorten a line required for the straightening and to reduce a space in a stage after the straightening and to simplify the device. CONSTITUTION:This is composed of plural vertically movable lift rollers 6 installed corresponding to the length of a work W as a strain straightening object, rails 5 arranged along the lift rollers 6 and a strain straightening device which is provided so that it can run on the rails and has straightening heads 4 provided with straightening and working rollers 2 and a pressure receiving roller 3. The lift rollers 6 move vertically in sequence according to the travel of the strain straightening device and a conveyor to carry in and out the work in the direction orthogonally crossed with the running direction of the strain straightening device is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled straightening device.

[0002]

2. Description of the Related Art The correction of "thin horse strain (see FIG. 4)" generated by welding is roughly divided into 1) heating,
2) There are two methods, that is, by cold correction using hydraulic pressure. Conventionally, in the cold correction method using hydraulic pressure 2), the correction device A is fixed as shown in FIG. 3, and the work W is moved to correct the distortion.
It was necessary to have a straightening line that was twice the length of the straight line, and the straightening line was long. Further, in the case where the work is laterally plate-welded in the subsequent step, since the work was rotated 90 ° so as to be sideways after straightening, a space for rotating the work 90 ° is provided. Was needed.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to improve a hydraulic cold straightening method for a work, to shorten a line required for straightening and to reduce and simplify a space in a post-straightening process. To do.

[0004]

A plurality of lift rollers capable of moving up and down corresponding to the length of a work to be straightened, and a rail arranged along the lift rollers. And a strain correction device having a straightening head provided with a straightening pressure roller and a pressure receiving roller so that the strain straightening device can run on the rail. The lift rollers are sequentially moved up and down. Further, a conveyor for loading and unloading the work is provided in a direction perpendicular to the traveling direction of the strain straightening device.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be briefly described below. As shown in FIG. 2, contrary to the prior art, the work W that has been carried in is fixed and the distortion correcting device 1 is moved. This eliminates the need to rotate the work W by 90 ° even when reaching the stage of plate joint welding. The details will be described below with reference to FIG. The strain correcting device 1 comprises a strain correcting pressure roller 2 and a pressure receiving roller 3 (see FIG. 1B). It has two such straightening heads 4 and runs on the running rail 5 while correcting the distortion due to welding while straddling the work W. At that time, the lift roller 6 receiving the work W can be lowered and raised by a lifting lift (not shown) as shown by an arrow a in FIG. A plurality of lift rollers 6 are installed in the running direction of the strain correction device 1, and each lift roller 6 is provided with a lifting device. And the distortion correction device 1
When the vehicle travels, the lift roller 6 automatically moves up and down accordingly. To correct the welding distortion of the work W, as shown in FIG. 1 (b), the work W is sandwiched between the pressure roller 2 and the pressure receiving roller 3 and pressure is applied to correct it.

[0006]

[Operation]

1) First, the strain correction device 1 is at the retracted position (the left end in FIG. 1A). 2) The lift rollers 6 are all raised by the lifting lift. 3) The work W is carried in by the carry-in conveyor. 4) Set the strain correction device 1 at the end of the work W so as to straddle the work W. Straightening pressure roller 2 depending on the shape of the work W
Set the pressure of. 5) The distortion correction device 1 starts traveling on the rail 5. 6) When the distortion correction device 1 goes in front of the first lift roller 6, the first lift roller 6 is automatically lowered, and when the position of the first lift roller 6 is passed, the next lift roller 6 is again moved. The lift roller 6 rises and receives a work W. A plurality of lift rollers 6 (for example, five lift rollers) are installed, and the above operation is repeated. 7) When the correction is completed, the work W is carried out by the carry-out conveyor in the direction of the arrow b in FIG. 1, that is, in the direction orthogonal to the traveling direction of the strain correcting device 1.

[0007]

【effect】

1) Since the work W is fixed and the distortion correcting device moves, the space required for this work can be small. 2) Even when the work W is transported to the plate joint welding section in the subsequent process, the work W can be directly sent out by the carry-out conveyor without shaking the work W by 90 °, so that the work process is simplified. It

[Brief description of drawings]

FIG. 1A is a perspective view of a strain correction device according to the present invention, and FIG.
FIG. 3 is a diagram showing a relationship between a straightening roller and a work.

FIG. 2 is a diagram showing the movement of the distortion correcting device according to the present invention.

FIG. 3 is a diagram showing the movement of a conventional distortion correction device.

FIG. 4 is a diagram showing an example of a lean horse type.

[Explanation of symbols]

 W work 1 Strain correction device 2 Pressure roller 3 Pressure receiving roller 4 Straightening head 5 Traveling rail 6 Lift roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norihiko Toriumi 19 Natsushima Town, Yokosuka City, Kanagawa Sumitomo Heavy Industries, Ltd. Oppama Shipyard Co., Ltd.

Claims (2)

[Claims] 1. A lift roller capable of moving up and down, a plurality of lift rollers being provided corresponding to the length of a work to be straightened, a rail disposed along the lift roller, and the rail. -A strain correcting device having a straightening head having a straightening processing roller and a pressure receiving roller, the lift roller being movable according to the running of the straightening device. A self-propelled strain correction device characterized in that it can be raised and lowered sequentially. 2. The self-propelled strain straightening device according to claim 1, further comprising a conveyor for loading and unloading the work in a direction orthogonal to the traveling direction of the strain straightening device.