KR100994327B1 - Welding Head Apparatus for Hybrid Laser-Arc Welding - Google Patents

Abstract

The present invention relates to a mixed welding head apparatus using a combination of laser welding and arc welding, the object of which is to minimize the deformation of the welding member during welding, to eliminate the risks that may occur in the turnover process of large members, welding The present invention provides a mixed welding head apparatus using laser welding and arc welding capable of forming the upper and lower beads of a member satisfactorily. The configuration of the present invention includes an integrated welding head module comprising an arc torch installed obliquely to the laser head and the laser beam in front of the laser head; A control unit installed at a rear end of the integrated welding head module and configured to tilt the integrated welding head module at a desired angle during fillet welding; A welding line tracking sensor installed at the front of the integrated welding head module and configured to accurately maintain the position of the laser focus on the welding line during welding; An offset adjustment device configured to fix and support a rear end of the integrated welding head module to adjust a distance and a height of a laser beam and a wire end; It is characterized by consisting of a disk rotating motor connected to the offset adjustment device in a vertical axis and configured to rotate to any welding line position and providing a driving force to the rotating disk.

Laser welding, arc welding, mixed welding, turn over, focusing optical system, optical fiber

Description

Welding Head Apparatus for Hybrid Laser-Arc Welding}             

1 is a conceptual diagram of a laser-arc mixed welding according to the present invention;

2 is a front view of a laser-arc mixed welding head according to the present invention;

3 is a side view of a laser-arc mixed welding head according to the present invention;

Figure 4 is a detailed picture of the distance and angle adjuster of the present invention.

<Description of the symbols for the main parts of the drawings>

(1): absence

(2): laser head

(3): focused laser beam

(4): arc torch

(5): Vision sensor

(6): Position fixing lever for welding head tilting

(7): Z axis slide for welding seam height adjustment

(8): Y axis slide for adjusting horizontal welding line                 

(9): Z axis motor for welding seam height adjustment

(10): Y axis motor for horizontal welding line control

11: distance and angle adjuster

(12): Rotating Disk

(13): Disk rotation motor

(14): optical fiber

The present invention relates to a mixed laser-arc welding device for hybrid welding, and more particularly, by using a heat source mixed with a laser beam and a mig arc, it is possible to improve welding speed, butt welding, than conventionally used welding methods. Mixed laser-arc welding head device configured to form a good lower bead without mounting the backing material during butt welding and to perform a full or partial penetration welding by irradiating from one side during fillet welding. It is about.

In the conventional conventional welding method, butt welding was required to prevent meltdown through mounting of the backing material. However, in the case of the member without the backing material, safety is a problem due to the process such as turnover for welding the lower surface after welding the upper surface. In case of welding, there were problems such as the deformation correction due to overheating heat, which required a lot of deformation correction work after welding. In case of fillet welding, both side stitch welding or one side welding is performed, but this also causes deformation due to excessive heat input. Many problems have been raised.

Therefore, in order to solve the above problems, a system using a heat source of laser alone, which is a low heat input welding technique, has been developed, and a method of using a mixed heat source of laser and arc that has been continuously improved to compensate for the disadvantages of laser welding has been developed, but it is not applicable to actual materials. There are many problems such as difficulty in designing a mixed head.

An object of the present invention for solving the above problems is to improve the welding speed than the conventional welding machine by using a mixed heat source synthesized with a laser beam and arc heat source, and a welding line tracking system for finding a precise weld line when welding It is designed to allow the mixing head to rotate in the direction of welding core such as horizontal, vertical and diagonal when butt welding, and to tilt the head during fillet welding, and to automatically weld lines to various welding joints. To provide a laser-arc mixed welding head device configured to weld while tracking.

The present invention, which achieves the object as described above and performs the problem for eliminating the conventional defects, in the welding head device attached to the gantry to perform welding, a mixture of a laser beam and an arc heat source synthesized in the member to be welded A laser head installed vertically toward the member to provide a heat source for providing a laser-arc mixed heat input, and an arc torch installed obliquely to the laser beam in front of the laser head so as to avoid interference with the laser beam, respectively, on the same support member. An integrated weld head module equipped; A control unit installed at a rear end of the integrated welding head module and configured to tilt the integrated welding head module at a desired angle during fillet welding; A welding line tracking sensor installed at the front of the integrated welding head module and configured to accurately maintain the position of the laser focus on the welding line during welding; An offset adjustment device configured to fix and support a rear end of the integrated welding head module to adjust a distance and a height of a laser beam and a wire end; It is connected to the offset adjusting device in a vertical axis to any desired welding line position such as horizontal, vertical, and diagonal directions so as to be able to work in response to various weld seam directions of the member to be welded in the butt mixed welding process. And a welding head device composed of a rotating disk configured to rotate and a disk rotating motor for providing a driving force to the rotating disk.

The offset adjuster is a Z-axis slide for welding seam height adjustment and Y-axis slide for horizontal weld seam adjustment to adjust the position of the integrated welding head module to align the weld line based on the position data obtained through the welding line tracking sensor, and provides a driving force to these slides It characterized in that consisting of the Z-axis motor for welding welding height adjustment and the Y-axis motor for adjusting the horizontal welding line.                     

The distance and angle between the laser head and the arc torch are configured to be adjusted by manually operating the distance and angle adjuster installed in the integrated welding head module.

That is, the mixed welding device of the present invention is a laser head, arc torch and welding seam tracking sensor module through the disk rotation motor so that the laser head, arc torch, welding seam tracking sensor module can maintain the direction in any direction. The mounted disk is characterized in that configured to rotate the rotating disk (Rotating Disk).

In addition, the laser head, arc torch, and welding line tracking sensor module of the hybrid welding device can be integrally rotated about the Y-axis (vertical axis), so that the butt welding and the fillet welding are automatically tracked by the welding line in one welding device. It is characterized in that configured to be possible.

In addition, the arc torch of the hybrid welding device is configured to rotate and translate on the welding direction plane and the vertical plane of the laser head axis by using the laser beam and the arc distance and angle adjuster separately. Characterized in that configured to facilitate the position change.

Hereinafter, the configuration and the operation of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual view of a laser-arc mixed welding according to the present invention, FIG. 2 is a front view of a laser-arc mixed welding head according to the present invention, and FIG. 3 is a side view of a laser-arc mixed welding system according to the present invention. To describe the configuration, a laser head 2 installed vertically toward the member to irradiate the laser-arc mixed heat input to the member to be welded to irradiate the laser beam 3; An arc torch 4 installed obliquely in front of the laser head 2 to avoid interference with the laser beam 3; A weld line tracking sensor 5 positioned at the forefront of the laser beam and the arc torch and configured to track the weld line during welding; There is shown a laser-arc mixed integral weld head module in which a fixed lever 6 mounted at the rear end is integrally mounted so that the laser-arc torch is manually tilted and then fixed during fillet welding.

In addition, there is shown an offset adjuster configured to adjust the distance and height of the laser beam and the end of the wire by holding and supporting the rear end of the integrated welding head module, in detail look at the specific configuration of the offset adjustment device weld line tracking sensor (5) Z-axis slide (7) for height adjustment of welding line and Y-axis slide (8) for horizontal welding line adjustment to adjust the position of the integrated welding head module to fit the welding line based on the position data obtained through It consists of a Z-axis motor 9 for welding seam height adjustment and a Y-axis motor 10 for horizontal seam welding.

That is, the position of the integrated welding head module is determined using the Z-axis motor 9 for adjusting the height of the welding line and the Y-axis motor 10 for adjusting the horizontal welding line when correcting the converted amount of the welding line from the welding line tracking sensor 5.

In addition, the integrated welding head module (Module) is configured to enable welding in the running, transverse, diagonal direction, such operation is fixed to the rear end of the integrated welding head module to adjust the distance and height of the laser beam and the wire end. It is carried out by a rotating disk 12 configured for traveling, traversing, and diagonal welding of the offset adjusting device, which is configured to be able to be configured, and a disk rotating motor 13, which is connected to transmit the rotational driving force to the rotating disk.

In addition, in the above-described fillet welding, when the laser-arch torch is manually operated by the fixed lever 6 installed at the rear end of the integral welding head module, the fixed support point of the tilted integral welding head module is shown. This is the tip body of the offset adjustment device. Similarly, the fixed support of the offset adjuster is a rotating disk connected by a vertical axis.

In addition, the arc torch 4 is detachable and is configured to adjust the angle adjuster 11 manually. Specifically, referring to Figure 4, the angle adjustment is configured to adjust the arbitrary angle by attaching a moving scale to the roller type, and inserts an arc torch into the processing hole by processing two processing holes inside the scale, The fixation is fixed by turning the arc torch control lever formed by dial, and when released, the arc torch can be separated by rotating it in reverse. The angle adjustment range of the scale is adjusted between 40 ° ~ 70 °.

Unexplained reference numeral 14 in the drawings is an optical fiber for transmitting a laser beam from the laser oscillator.                     

Referring to the operation of the present invention configured as described above are as follows.

Assuming that the laser-arc mixed welding head module developed in the present invention is attached to the gantry, first, the contact surface of the member 1 to be butt welded is welded and placed on a surface plate, and then the vision sensor, arc torch, and laser head are approximately After manually adjusting to align the welding line direction and teaching and remembering the starting point of welding, if the automatic welding is executed, it proceeds at the feed rate set in the program. At this time, the welding line alignment motor (based on the position data obtained through the welding line tracking sensor 5) 10) and the height adjustment motor (9) to perform the welding while determining the welding position.

The welding process receives the welding start signal from the welding start point, and the welding condition is set and ordered in the specified order, and the transfer is progressed through the welding line tracking. After this sequence, the welding is finished.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

The present invention as described above is configured to cope with various weld joints by rotating or tilting the head with respect to the shape or joint of various members such as butt or fillet welding by integrally configuring the vision sensor, laser head, arc torch Integral welding head module for laser-arc mixed welding tracks the welding line in real time to compensate for the path to obtain stable weldability.

By using a heat source mixed with a laser beam and a mig arc, the welding speed can be improved over the conventional welding method.

Butt welding has the advantage of forming a good lower bead without mounting the backing material,

In addition, the fillet (Fillet) welding is a very useful invention that has the advantage of being able to perform a complete or partial penetration welding by irradiating from one side is an invention that is expected to use greatly in the industry.

Claims (3)

In the welding head device attached to the gantry to perform welding, In order to provide a mixed heat source combining the laser beam and the arc heat source to the member to be welded, the laser head is installed perpendicularly to the member to irradiate the laser-arc mixed heat and irradiates the laser beam with the laser beam in front of the laser head. An integrated welding head module in which arc torchs installed obliquely to each other are installed on the same support member; A control unit installed at a rear end of the integrated welding head module and configured to tilt the integrated welding head module at a desired angle during fillet welding; A welding line tracking sensor installed at the front of the integrated welding head module and configured to accurately maintain the position of the laser focus on the welding line during welding; An offset adjustment device configured to fix and support a rear end of the integrated welding head module to adjust a distance and a height of a laser beam and a wire end; Rotating disk and the rotation which is connected to the offset adjustment device in a vertical axis and configured to rotate to any desired seam position to be able to work in accordance with the various weld seam direction of the member to be welded in the butt mixed welding process Consists of a disc rotation motor that provides driving power to the disc, Mixed laser-arc welding head device, characterized in that the distance and angle between the laser head and the arc torch is configured to adjust by installing the distance and angle adjuster in the integrated welding head module. The method of claim 1, The offset adjuster is a Z-axis slide for welding seam height adjustment and Y-axis slide for horizontal weld seam adjustment to adjust the position of the integrated welding head module to align the weld line based on the position data obtained through the welding line tracking sensor, and provides a driving force to these slides Mixed laser-arc welding head device, characterized in that consisting of the Z-axis motor for adjusting the welding line height and the Y-axis motor for adjusting the horizontal welding line. delete

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