WO2019127905A1

WO2019127905A1 - Laser-tig hybrid welding head

Info

Publication number: WO2019127905A1
Application number: PCT/CN2018/078377
Authority: WO
Inventors: 李生智; 谯永鹏; 张庆锋; 李文明; 张维
Original assignee: 沈阳富创精密设备有限公司
Priority date: 2017-12-30
Filing date: 2018-03-08
Publication date: 2019-07-04
Also published as: CN108213753A

Abstract

Disclosed is a laser-TIG hybrid welding head, wherein same is a hybrid welding head integrating a laser welding head with a TIG welding head. After the laser welding head is integrated with the TIG welding head, a laser (5) is transferred through the interior of a tungsten electrode (3) of the TIG or around the tungsten electrode, and a focal point (7) of the laser is located below or in front of the tungsten electrode. The laser-TIG hybrid welding head can achieve coaxial welding, reduces the amount of space occupied, is more flexible in use, and solves the problem of inconsistent included angles of two welding heads during welding at a corner, thereby improving the quality of welding.

Description

[Name of invention made by ISA according to Rule 37.2] A laser TIG composite welding head

Technical field

The invention relates to the field of welding in the equipment manufacturing industry and is a new form of laser TIG composite welding head.

Background technique

Laser and TIG (tungsten argon arc welding) are widely used in the field of metal welding, but the traditional welding method uses a separate laser head and a separate TIG welding head to be fixed on the welding robot or welding machine, occupying a large space and forming each other. The angle is not conducive to the welding of complex curves and the completion of welding in a small space, the quality of welding is not high. This machine integrates the laser welding head with the TIG (Tungsten Arc Welding) welding head and maintains the coaxial welding, which is more suitable for welding in complex and small space.

Summary of the invention

The invention is directed to the conventional welding equipment laser head and the TIG welding head are independent of each other, and solves the problem that the laser head is occupied or the operation is not good after the front TIG welding head is behind or the TIG welding head is in front of the front laser head; A laser welding head and a TIG welding head are integrated to form a new type of composite welding head, and coaxial welding can be achieved.

The technical solution adopted by the invention is:

A new form of laser TIG composite welding head, a hybrid welding head with a laser welding head integrated with a TIG welding head; after the laser welding head is integrated with the TIG welding head, the laser is internally injected through the TIG tungsten pole, and the laser focus is focused on Below the tungsten pole.

The composite welding head comprises a welding head main body, a laser focusing module is arranged on the upper part of the welding head main body, and a tungsten pole is arranged in the lower part of the welding head main body; a gas connecting pipe is arranged on the side wall of the welding head main body.

A new form of laser TIG composite welding head, a composite welding head with a laser welding head integrated with a TIG welding head; after the laser welding head is integrated with the TIG welding head, the laser is emitted around the tungsten pole, and the laser focus is focused on the tungsten pole In front.

The composite welding head comprises a welding head body, a laser focusing module is arranged on the upper part of the welding head body, a tungsten pole is arranged on a side wall of the lower part of the welding head body, and a passage through which the laser beam passes is arranged beside the tungsten pole of the lower part of the welding head body; A gas connecting pipe is disposed on the side wall of the main body.

The advantages of the invention are:

1. The traditional laser TIG hybrid welding is integrated into a welding head by the two welding heads of the laser welding head and the TIG welding head. After the laser welding head is integrated with the TIG welding head, the tungsten TIG inside the laser TIG emits light or laser surrounds. The tungsten electrode focuses on a new type of soldering at the front end of the tungsten electrode, which reduces the size of the soldering tip and makes it more flexible to use.

2. The welding head of the invention is a coaxial welding head, and the laser and the TIG welding heat input angle are the same, and can be matched with various welding robots and welding automation equipments, and the welding angle is always consistent during the process of welding complicated corners. To stabilize the quality of welding. Reduce the footprint and make it more flexible. In particular, the problem of inconsistent angles of the double horns when welding at the corners is solved, and the welding quality is improved.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Figure 2 is a schematic view 2 of the structure of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the drawings and embodiments.

As shown in Figure 1, a new form of laser TIG composite welding head, laser welding head and TIG welding head integrated composite welding head; after the laser welding head and TIG welding head integration, the laser passes through the TIG tungsten inside Shot, the laser focus is focused below the tungsten.

The composite welding head includes a welding head main body 1. The upper part of the welding head main body 1 is provided with a laser focusing module 2, and the lower part of the welding head main body is provided with a tungsten electrode 3; and the side wall of the welding head main body 1 is provided with a gas connecting pipe 4.

The inside of the tungsten electrode 3 is perforated, the laser beam 5 passes through the tungsten hole, and the shielding gas 6 is introduced into the hole of the tungsten electrode 3 to prevent the tungsten electrode 3 from being burned.

As shown in Fig. 2, a new form of laser TIG composite welding head, a laser welding head and a TIG welding head integrated composite welding head; after the laser welding head is integrated with the TIG welding head, the laser is emitted around the tungsten pole, The laser focus point 7 is focused in front of the tungsten pole.

The composite welding head comprises a welding head main body 1 , and a laser focusing module 2 is arranged on an upper part of the welding head main body, a tungsten pole 3 is arranged on a side wall of the lower part of the welding head main body, and a passage through which the laser beam passes is arranged beside the tungsten pole of the lower part of the welding head main body 8; a gas connecting pipe 4 is disposed on the side wall of the welding head body.

The laser focusing module 2 adopts a oscillating galvanometer laser module; under the action of the galvanometer laser module, the focusing point 7 can rotate around the tungsten pole to achieve the welding effect of the laser beam and the tungsten pole coaxially; the protective gas is introduced into the welding head 6 The protective gas is blown around the tungsten electrode to protect the weld pool and protect the tungsten electrode.

Embodiment 1: A tungsten hole is internally processed with a circular hole which is a laser beam passage passage, as shown in FIG.

After the laser is focused, its beam is directed through the internal channel of the tungsten to the surface of the workpiece to form a molten pool. This process can exert the high energy characteristics of laser welding to increase the weld penetration.

The tungsten pole independently turns on the TIG welding power source, and generates arc ignition and arc welding when it is close to the metal to be welded.

The laser and TIG arc welding work together to form a stable molten pool to achieve the welding effect. During the welding process, the integrated welding head is internally connected with a shielding gas, and the shielding gas is respectively protected from the inner laser channel of the tungsten electrode and the tungsten electrode to the welding pool.

The internal protection gas of the tungsten electrode also protects the tungsten electrode and prevents the internal laser channel of the tungsten electrode from being clogged due to high temperature melting during the soldering process.

Embodiment 2: A laser lasing laser laser module is used. See Figure 2.

The laser relies on the internal motor of the galvanometer module, and its focus can be rotated around the tungsten pole to achieve the laser and tungsten coaxial welding effect.

The integrated welding head is internally filled with a welding shielding gas, which is blown around the tungsten pole to protect the weld pool and protect the tungsten electrode.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the embodiments described above, and various modifications may be made to the technical solutions of the present invention within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations.

Claims

A new form of laser TIG composite welded joint characterized by:

a composite welding head in which a laser welding head is integrated with a TIG welding head;

After the laser welding head is integrated with the TIG welding head, the laser is emitted through the inside of the TIG tungsten, and the laser focus is focused below the tungsten.
A new form of laser TIG composite welded joint according to claim 1 wherein:

The utility model comprises a welding head main body, a laser focusing module is arranged on the upper part of the welding head main body, a tungsten pole is arranged in the lower part of the welding head main body, and a gas connecting pipe is arranged on the side wall of the welding head main body.
A new form of laser TIG composite welded joint according to claim 1 wherein:

The inside of the tungsten electrode is perforated, the laser beam passes through the tungsten hole, and a shielding gas is introduced into the tungsten hole to prevent the tungsten from being burned.
A new form of laser TIG composite welded joint characterized by:

a composite welding head in which a laser welding head is integrated with a TIG welding head;

After the laser welding head is integrated with the TIG welding head, the laser is emitted around the tungsten pole, and the laser focus is focused in front of the tungsten pole.
A new form of laser TIG composite welded joint according to claim 4, wherein:

The utility model comprises a welding head main body, a laser focusing module is arranged on the upper part of the welding head main body, a tungsten electrode is arranged on a side wall of the lower part of the welding head main body, and a passage through which the laser beam passes is arranged beside the tungsten pole of the lower part of the welding head main body; There is a gas connection pipe.
A new form of laser TIG composite welded joint according to claim 4, wherein:

The laser focusing module adopts a oscillating galvanometer laser module;

Under the action of the galvanometer laser module, the laser can rotate around the tungsten pole to achieve the welding effect of the laser and the tungsten pole. The welding head is internally insulated with a protective gas and blown around the tungsten pole to protect the weld pool and protect it. The effect of tungsten.