JPH06541A - Linear heating device - Google Patents

Abstract

(57) [Summary] [Purpose] Steel plates are systematically bent without requiring skill. [Structure] At least four clamp members 5 that can be vertically displaced by a jack 3 are provided on a traveling carriage 1.
A carrier 10 that can move up and down in the upward direction of the traveling carriage 1 is provided so as to be traversable. A heating source 11 and a distance sensor 12 are attached to the traverse carrier 10. A control unit for controlling the attitude of the steel plate 6 is provided based on a predetermined steel plate bending shape value and a value detected by the distance sensor 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear heating device used for producing a three-dimensional steel plate such as a hull outer plate.

[0002]

Bending of steel sheets in shipyards is generally performed by linear heating. Bending by such linear heating involves linear heating at a predetermined position of a flat plate or semi-cylindrical steel plate, and in-plane shrinkage of the plate due to plastic strain (the amount of shrinkage is uniform in the plate thickness direction) and corners. By utilizing deformation (the amount of shrinkage changes in the plate thickness direction), a desired three-dimensional shape is created.

When performing the bending work of a steel sheet using the above-mentioned linear heating, the heating position and the heating conditions are important, but in the past, in reality, it depends on the intuition and skill of a skilled worker. .

[0004]

However, recently,
Problems such as the aging of these skilled workers, the decrease in the number of workers, and the difficulty in passing on skills are caused.
There is a concern that processing capacity will decline.

Therefore, the present invention is intended to provide a linear heating apparatus capable of bending a steel sheet without requiring skill or special skill.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an edge portion of a steel plate to be placed on the surface plate at least at four positions on a traveling carriage whose upper surface is the surface plate. A clamp tool for gripping is arranged so as to be vertically displaceable via a jack, a guide beam is arranged above the traveling carriage so as to be orthogonal to the traveling direction of the traveling carriage, and the guide beam is moved up and down. A possible carrier is installed transversely, and a heating source for heating the steel plate and a distance sensor for measuring the distance to the steel plate are attached to the carrier, and a predetermined steel plate bending shape value and the above Based on the correction data of the steel plate detected by the distance sensor, a configuration including a controller for driving and controlling the traveling drive device of the traveling carriage, the jack, the traverse drive device of the carrier, and the lifting drive device. That.

[0007]

The original shape of the steel plate to be bent is measured by the distance sensor, and the driving means and the jack are driven by the control means calculated based on this data and the predetermined steel plate bending shape value. The steel sheet is linearly heated and bent while being controlled in a predetermined posture.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the linear heating apparatus of the present invention, which comprises a machine body and a controller.

As shown in the outline of FIG. 1, the machine main body portion is provided with a traveling carriage 1 having a surface plate 2 formed along the longitudinal direction at the center of the upper surface in the width direction, and the surface plate 2 on the traveling carriage 1 is provided. Clamping tools 5 are disposed at at least four places such that the clamps 5 are sandwiched between them by means of the jack 3 and the swing arm 4, and the end edges of the steel plate 6 placed on the surface plate surface 2 are grasped by the respective clamping tools 5. And the position of the steel plate 6 can be changed by expanding and contracting each jack 3, and
A gate-shaped stand 9 including a guide beam 7 extending in a direction (arrow Y) orthogonal to the traveling direction (arrow X) of the traveling carriage 1 and a pedestal 8 supporting the guide beam 7 is provided. Installed so as to straddle the traveling position of the above, the guide beam 7 is equipped with a vertically movable carrier 10, and a heating source 11 for heating the steel plate 6 can be swung on the carrier 10. The heating source 11 is attached with four distance sensors 12 for measuring the distance to the steel plate 6.

As shown in FIG. 2, the control section is composed of an arithmetic unit 13 and a controller 14. The above computing unit
Based on the predetermined steel plate bending shape value and the correction data (original steel plate shape) of the steel plate 6 obtained by the distance sensor 12 before performing the linear heating, as shown in the flowchart of FIG. Create linear heating plan data such as sequence, determine the clamp point, create heating bending simulation,
It has a function of calculating the machined steel plate attitude, calculating the control value of the machine body, and outputting the control procedure. or,
Based on a command from the computing unit 13, the controller 14 drives the traveling drive device 15 of the traveling vehicle 1, the jacks 3, the traverse drive device 16 and the elevating drive device 17 of the carrier 10, the heating source 11, and the same. It has a function of driving and controlling the turning drive device 18 and the like.

When bending the steel plate 6, first, the steel plate 6
Is mounted on the surface plate surface 2 of the traveling carriage 1 and the end edges are temporarily held by the respective clamps 5. In such a state,
Prior to the linear heating, the carrier 10 is adjusted up and down to set the distance sensor 12 at a required height position above the steel plate 6, and further, the traveling carriage 1 is moved in the X direction and the traverse carrier 10 is moved to the Y direction.
The original shape of the steel sheet 6 to be bent is calculated by measuring the distance to each part of the steel sheet 6 by the distance sensor 12 by making full use of the movement of the direction and the turning of the distance sensor 12 via the heating source 11. Obtained with the vessel 13. Next, using the obtained original shape as correction data, a predetermined steel plate bending shape value is corrected, and the shape data calculated by the correction is analyzed,
Create linear heating plan data. Then, as shown in FIG. 3, the steel plate 6 is attached to each clamp 5 based on the above plan data.
Is held and the final control procedure data is sent to the controller 14.

The controller 14 drives the traveling drive device 15 of the traveling carriage 1, the jack 3, the traverse drive device 16 of the carrier 10, the elevation drive device 17, the heating source 11, etc., respectively, based on the command from the arithmetic unit 13. By controlling
For example, as shown in (a) of FIG. 4, the central portion of the steel plate 6 is heated, or as shown in (b) of FIG. Bend according to the procedure. In this case, in order to heat each part of the steel plate 6 from the normal direction, the posture of the steel plate 6 is sequentially changed by the operation of each jack 3, but the position directly below the heating source 11 is always the lowest point (reference Level) is controlled. As a result, the steel plate 6 having a three-dimensional shape as shown in FIG. 5 is obtained.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

[0015]

As described above, according to the linear heating apparatus of the present invention, the traveling carriage, the clamp, the jack, the carrier, the heat source, the distance sensor, etc. are combined, and the posture of the steel sheet is changed according to a command from the controller. However, since the planned heat input can be applied to the steel sheet, the steel sheet can be bent without requiring skill or special skill, and the processing capacity can be improved. Be effective.

[Brief description of drawings]

1 shows an embodiment of a linear heating device of the present invention, (a) is a front view of a machine body, (b) is a side view, FIG.
(C) is a partially cutaway plan view.

FIG. 2 is a block diagram of a control unit according to the present invention.

FIG. 3 is a flowchart showing a function of an arithmetic unit in the control unit of FIG.

FIG. 4 shows an operating state of the linear heating apparatus of the present invention, (a) is a schematic view of heating the central part of the steel plate, and (b) is heating the end part of the steel plate. It is the schematic of a state.

FIG. 5 is a schematic view of a steel sheet bent by the linear heating device of the present invention.

[Explanation of symbols]

 1 Traveling Vehicle 2 Surface Plate 3 Jack 5 Clamping Tool 6 Steel Plate 7 Guide Beam 10 Carrier 11 Heating Source 12 Distance Sensor 14 Controller 15 Traveling Drive Device 16 Traverse Drive Device 17 Lifting Drive Device

Claims (1)

[Claims] 1. A clamp tool for gripping an edge portion of a steel plate placed on the surface plate surface can be vertically displaced through a jack at least at four locations on a traveling trolley whose upper surface is a surface plate surface. The guide beam is arranged above the traveling carriage so as to be orthogonal to the traveling direction of the traveling carriage, and the guide beam is equipped with a vertically movable carrier so that the carrier can be traversed. A heating source for heating the steel plate and a distance sensor for measuring the distance to the steel plate are attached, and further, based on the predetermined steel plate bending shape value and the correction data of the steel plate detected by the distance sensor, the traveling A linear heating device having a configuration including a controller for driving and controlling a traveling drive device for a truck, the jack, the traverse drive device for the carrier, and a lift drive device.