阅读说明：本技术 一种焊枪头、激光电弧复合焊装置和方法 (Welding gun head, laser arc composite welding device and method ) 是由 雷正 朱宗涛 陈辉 黄举近 刘瑞琳 于 2019-10-17 设计创作，主要内容包括：本申请实施例提供一种焊枪头、激光电弧复合焊装置和方法,涉及焊接技术领域。该焊枪头包括焊枪体、导电嘴及钨极组件。焊枪体开设有喷嘴口,导电嘴设置于焊枪体内,钨极组件连接于导电嘴且开设有穿设孔。激光电弧复合焊装置包括脉冲激光器、TIG电弧焊机及焊枪头。脉冲激光器包括激光镜头,且用于提供脉冲激光,TIG电弧焊机与导电嘴电连接且用于提供电源。脉冲激光器产生的脉冲激光能够穿过穿设孔从喷嘴口射出,钨极组件在TIG电弧焊机作用下产生电弧,且脉冲激光位于电弧的中心位置。该复合焊方法将脉冲激光和电弧进行复合,且脉冲激光束穿过电弧的中心位置,降低能耗,增加可达性,增强能量利用率,提高焊接效率。(The embodiment of the application provides a welding gun head, a laser-arc hybrid welding device and a laser-arc hybrid welding method, and relates to the technical field of welding. The welding gun head comprises a welding gun body, a conductive nozzle and a tungsten electrode assembly. The welding gun body is provided with a nozzle opening, the conductive nozzle is arranged in the welding gun body, and the tungsten electrode assembly is connected with the conductive nozzle and provided with a through hole. The laser-arc hybrid welding device comprises a pulse laser, a TIG arc welder and a welding gun head. The pulse laser comprises a laser lens and is used for providing pulse laser, and the TIG electric arc welding machine is electrically connected with the contact tip and is used for providing a power supply. Pulse laser generated by the pulse laser can penetrate through the through hole to be emitted from the nozzle opening, the tungsten electrode assembly generates electric arcs under the action of the TIG electric arc welding machine, and the pulse laser is located in the center of the electric arcs. According to the composite welding method, the pulse laser and the electric arc are compounded, and the pulse laser beam penetrates through the center of the electric arc, so that the energy consumption is reduced, the accessibility is increased, the energy utilization rate is enhanced, and the welding efficiency is improved.)

1. A welding gun head is characterized by comprising a welding gun body, a conductive nozzle and a tungsten electrode assembly;

the welding gun body is used for being connected with a laser lens of a pulse laser and provided with a nozzle opening, the contact tube is arranged in the welding gun body and used for being electrically connected with a TIG (tungsten inert gas) arc welding machine, and the tungsten electrode assembly is connected with the contact tube and provided with a through hole;

the pulse laser that the pulse laser produced can pass through the through-going hole after the laser lens is sent out and can be followed the nozzle mouth and jettisoned, simultaneously, TIG electric arc welding machine provides the power and can pass through the contact tip can transmit to tungsten utmost point subassembly to make tungsten utmost point subassembly produce the electric arc and from the nozzle mouth releases.

2. The torch head of claim 1, wherein the tungsten electrode assembly comprises a tungsten electrode body and a clamping member, the tungsten electrode body comprises a first tungsten electrode and a second tungsten electrode which are fixedly connected, the second tungsten electrode is close to the nozzle opening relative to the first tungsten electrode, the clamping member is clamped in the first tungsten electrode and connected to the inner cavity of the contact tip, the cross-sectional diameter of one end, far away from the first tungsten electrode, of the second tungsten electrode is gradually reduced along the laser emission direction, and the through hole is formed along the axial direction of the tungsten electrode body.

3. A laser-arc hybrid welding device, characterized by comprising a pulse laser, a TIG arc welder and a torch head according to claim 1 or 2;

the pulse laser comprises a laser lens, the laser lens is fixedly arranged at one end, deviating from the nozzle opening, of the welding gun head and is used for providing pulse laser, the TIG electric arc welding machine is electrically connected with the conductive nozzle and is used for providing a power supply, the pulse laser emitted by the pulse laser penetrates through the penetrating hole of the tungsten electrode assembly through the laser lens and is ejected out of the nozzle opening, and meanwhile, the TIG electric arc welding machine is electrically connected with the tungsten electrode assembly through the conductive nozzle so that the tungsten electrode assembly generates electric arcs and is ejected out of the nozzle opening.

4. The hybrid laser-arc welding apparatus according to claim 3, wherein the tungsten electrode assembly includes a tungsten electrode body, the through hole is formed in an axial direction of the tungsten electrode body and is a circular hole, the tungsten electrode body is capable of generating an arc by the TIG arc welder, and the pulse laser generated by the pulse laser is capable of being emitted from a center position of the through hole so that the pulse laser is positioned at the center position of the arc.

5. A laser-arc hybrid welding method is characterized by comprising the following welding steps:

laser welding and arc welding are simultaneously carried out on one part of the part to be welded, and the laser beam penetrates through the center of the arc.

6. The laser arc hybrid welding method of claim 5, wherein said laser is a pulsed laser.

7. The laser-arc hybrid welding method according to claim 5, characterized in that the arc is a TIG arc.

8. The laser arc hybrid welding method according to claim 5, characterized by comprising, before said welding step, a parameter setting step of:

the single pulse energy, the pulse width and the pulse frequency of the pulse laser are set, and the current parameter, the voltage parameter, the welding gun angle, the tungsten electrode inner diameter, the welding speed and the protective gas flow of the TIG electric arc welding machine are set.

9. The laser arc hybrid welding method according to claim 8, further comprising a preparation step before the parameter setting step of:

and cleaning, assembling and positioning the part to be welded before welding.

10. The laser arc hybrid welding method according to claim 8, further comprising a path setting step between said welding step and said parameter setting step:

and editing the walking path of the robot hand to determine the starting point and the end point of the composite welding.

Technical Field

The application relates to the technical field of welding, in particular to a welding gun head, a laser-arc hybrid welding device and a laser-arc hybrid welding method.

Background

With the increasing shortage of global resources, the reduction of energy consumption and cost saving become more and more important for industrial production.

The laser welding has the advantages of high heat source energy density and strong penetration capacity, but the energy utilization rate of the single laser welding of continuous laser is extremely low; the electric arc welding has the advantages of simple process equipment and mature technology, but the welding efficiency is not high.

Disclosure of Invention

Objects of the present application include, for example, providing a welding torch head, a laser arc hybrid welding apparatus and method, which can combine pulse laser welding and TIG arc welding, enhance energy utilization efficiency, increase accessibility, and improve welding efficiency.

The embodiment of the application can be realized as follows:

in a first aspect, an embodiment of the present application provides a welding gun head, including a welding gun body, a contact tip, and a tungsten electrode assembly;

the welding gun body is used for being connected with a laser lens of a pulse laser and provided with a nozzle opening, the contact tube is arranged in the welding gun body and used for being electrically connected with a TIG (tungsten inert gas) arc welding machine, and the tungsten electrode assembly is connected with the contact tube and provided with a through hole;

the pulse laser that the pulse laser produced can pass through the through-going hole after the laser lens is sent out and can be followed the nozzle mouth and jettisoned, simultaneously, TIG electric arc welding machine provides the power and can pass through the contact tip can transmit to tungsten utmost point subassembly to make tungsten utmost point subassembly produce the electric arc and from the nozzle mouth releases.

In an optional embodiment, the tungsten electrode assembly includes a tungsten electrode body and a clamping member, the tungsten electrode body includes a first tungsten electrode and a second tungsten electrode which are fixedly connected, the second tungsten electrode is close to the nozzle opening relative to the first tungsten electrode, the clamping member is clamped in the first tungsten electrode and connected to the inner cavity of the contact nozzle, the cross-sectional diameter of one end, far away from the first tungsten electrode, of the second tungsten electrode is gradually reduced along the cross-sectional diameter of the laser emission direction, and the through hole is formed along the axial direction of the tungsten electrode body.

In a second aspect, an embodiment of the present application provides a laser-arc hybrid welding apparatus, including a pulse laser, a TIG arc welder, and a torch head according to any one of the foregoing embodiments;

the pulse laser comprises a laser lens, the laser lens is fixedly arranged at one end, deviating from the nozzle opening, of the welding gun head and is used for providing pulse laser, the TIG electric arc welding machine is electrically connected with the conductive nozzle and is used for providing a power supply, the pulse laser emitted by the pulse laser penetrates through the penetrating hole of the tungsten electrode assembly through the laser lens and is ejected out of the nozzle opening, and meanwhile, the TIG electric arc welding machine is electrically connected with the tungsten electrode assembly through the conductive nozzle so that the tungsten electrode assembly generates electric arcs and is ejected out of the nozzle opening.

In an optional embodiment, the tungsten electrode assembly includes a tungsten electrode body, the through hole is opened along an axial direction of the tungsten electrode body and is a circular hole, the tungsten electrode body can generate an electric arc under the action of the TIG electric arc welder, and the pulse laser generated by the pulse laser can be emitted from a central position of the through hole so that the pulse laser is positioned at the central position of the electric arc.

In a third aspect, an embodiment of the present application provides a laser arc hybrid welding method, including a welding step:

laser welding and arc welding are simultaneously carried out on one part of the part to be welded, and the laser beam penetrates through the center of the arc.

In an alternative embodiment, the laser is a pulsed laser.

In an alternative embodiment, the arc is a TIG arc.

In an alternative embodiment, a parameter setting step is included before the welding step:

the single pulse energy, the pulse width and the pulse frequency of the pulse laser are set, and the current parameter, the voltage parameter, the welding gun angle, the tungsten electrode inner diameter, the welding speed and the protective gas flow of the TIG electric arc welding machine are set.

In an optional embodiment, before the parameter setting step, a preparation step is further included:

and cleaning, assembling and positioning the part to be welded before welding.

In an alternative embodiment, a path setting step is further included between the welding step and the parameter setting step:

and editing the walking path of the robot hand to determine the starting point and the end point of the composite welding.

The beneficial effects of the embodiment of the application include, for example:

because the tungsten electrode assembly is provided with the through hole for injecting the pulse laser, the conductive nozzle is electrically connected with the TIG electric arc welding machine, so that a power supply provided by the TIG electric arc welding machine is transmitted to the tungsten electrode assembly through the conductive nozzle. The tungsten electrode assembly can generate electric arcs under the action of a TIG electric arc welding machine, and pulse laser generated by the pulse laser can be emitted from a through hole of the tungsten electrode assembly, so that the pulse laser is positioned at the central position of the electric arcs, and coaxial hybrid welding of the pulse laser and the TIG electric arcs is realized. The pulse laser has lower average power than continuous laser and high photoelectric conversion efficiency, so the energy consumption is low and the energy utilization rate is high; the accessibility of the welding gun head is good, and the welding efficiency is high; the heat input of the total welding is small, the electric arc is stable, and the welding quality is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic view of a laser-arc hybrid welding apparatus provided in an embodiment of the present application;

fig. 2 is a schematic view of a torch head in a laser-arc hybrid welding device provided in an embodiment of the present application.

Icon: 100-laser arc hybrid welding device; 01-a part to be welded; 10-welding gun head; 11-a nozzle opening; 12-a torch body; 121-a wire feeding pipe; 122-shielding gas outlet; 123-protective gas hood; 13-a contact tip; 14-a clamp; 15-tungsten electrode body; 152-a first tungsten electrode; 153-a second tungsten electrode; 155-through holes; 20-a pulsed laser; 21-a laser body; 22-laser lens; 23-a pulsed laser beam; 30-TIG arc welder; 40-protective gas cylinder; 45-protection of the trachea; 50-a wire feeder; 60-a robot hand.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings or that the application product is usually placed in use, the description is merely for convenience and simplicity, and it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present application.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.