阅读说明：本技术 一种一体式高效冷却深熔焊焊枪 (Integrated efficient cooling deep fusion welding gun ) 是由 刘红兵 徐磊 杨瑾 宣扬 于 2020-04-03 设计创作，主要内容包括：本发明揭示了一种一体式高效冷却深熔焊焊枪,包括焊枪本体,在焊枪本体的顶部向下开设进水口通道、出水口通道、进气口通道及导电接线柱,在焊枪本体的底部设有保护嘴,在保护嘴的内腔设有喷嘴,喷嘴的内腔设有导电嘴；保护嘴、喷嘴和导电嘴的开口都设在同一轴线上,电极从焊枪枪体的下方向上依次通过保护嘴、喷嘴和导电嘴的开口后安装在导电嘴的内腔,导电接线柱与导电嘴和喷嘴接触,进水口通道与出水口通道导通。本发明的主要优点是：设计的新型流道结构的焊枪不但能对发热较严重的电极进行快速冷却,还能对焊枪导电嘴、喷嘴实现整体冷却。将常规的单一结构钨针变成铜钨复合电极,既可以增加热传导率,又能降低生产成本。(The invention discloses an integrated efficient cooling deep penetration welding gun, which comprises a welding gun body, wherein a water inlet channel, a water outlet channel, an air inlet channel and a conductive binding post are downwards arranged at the top of the welding gun body; the openings of the protection nozzle, the nozzle and the conductive nozzle are all arranged on the same axis, the electrode is installed in the inner cavity of the conductive nozzle after sequentially passing through the openings of the protection nozzle, the nozzle and the conductive nozzle from the lower direction of the welding gun body, the conductive binding post is contacted with the conductive nozzle and the nozzle, and the water inlet channel is communicated with the water outlet channel. The main advantages of the invention are: the welding gun with the novel runner structure can rapidly cool the electrode which generates heat seriously and can integrally cool the contact tip and the nozzle of the welding gun. The conventional tungsten needle with a single structure is changed into a copper-tungsten composite electrode, so that the thermal conductivity can be increased, and the production cost can be reduced.)

1. The utility model provides a high-efficient cooling deep penetration welding welder of integral type which characterized in that: the welding gun comprises a welding gun body, wherein a water inlet channel, a water outlet channel, an air inlet channel and a conductive binding post are arranged at the top of the welding gun body downwards; the openings of the protective nozzle, the nozzle and the conductive nozzle are all arranged on the same axis, the electrode is arranged in the inner cavity of the conductive nozzle after sequentially passing through the openings of the protective nozzle, the nozzle and the conductive nozzle from the lower direction of the welding gun body, the conductive binding post is contacted with the conductive nozzle and the nozzle, and the water inlet channel is communicated with the water outlet channel; the inner cavity of the conductive nozzle is communicated with the water inlet channel through the water flow channel, the inner cavity of the nozzle is communicated with the water outlet channel through the water flow channel, and the cavity formed between the conductive nozzle and the nozzle is communicated with the air inlet channel through the air flow channel; the cooling water flows into the inner cavity of the contact nozzle after passing through the water inlet channel and the water flow channel, flows into the inner cavity of the nozzle after passing through the water flow channel, and finally reaches the water outlet channel after passing through the water flow channel from the inner cavity of the nozzle and flows out.

2. The integrated high efficiency cooling deep fusion welding torch of claim 1, wherein: and the gas flows into a cavity formed between the contact tube and the nozzle from the gas inlet channel and then flows out from the opening of the protective nozzle.

3. The integrated high efficiency cooling deep fusion welding torch according to any one of claims 1-2, wherein: the water inlet channel is arranged at the central position of the welding gun body; the two water outlet channels are arranged at symmetrical positions on two sides of the water inlet channel; the air inlet channel and the conductive binding posts are respectively arranged at the symmetrical positions of the other two sides of the water inlet channel.

4. The integrated high efficiency cooling deep fusion welding torch of claim 3, wherein: the electrode is a copper-tungsten composite electrode.

5. The integrated high efficiency cooling deep fusion welding torch of claim 4, wherein: the cooling water passes through the water inlet channel, and the water temperature is lower than 10 ℃.

6. The integrated high efficiency cooling deep fusion welding torch of claim 5, wherein: the conductive binding post, the conductive nozzle and the nozzle are all made of all-copper materials.

7. The integrated high efficiency cooling deep fusion welding torch of claim 6, wherein: the shape of the protection mouth is a duckbill shape with small taper.

8. The integrated high efficiency cooling deep fusion welding torch of claim 6, wherein: and a sealing cover is also arranged at the top of the welding gun body.

The technical field is as follows:

the invention belongs to the technical field of welding gun equipment, and particularly relates to an integrated efficient cooling deep penetration welding gun device.

Background art:

deep fusion Welding (Keyhole TIG Welding) is realized by relatively balancing large arc pressure formed by large current (more than 300A) and surface tension of molten pool liquid metal to form small holes so as to realize deep fusion Welding. The maximum of materials such as stainless steel and the like is welded by a deep fusion welding process to be 16mm, and a welding seam is formed at one time without grooving and filling welding wires.

In the deep fusion welding process, a large amount of heat is generated due to large current in the welding process, and a welding gun is easy to damage, for example, the welding current for welding 16mm stainless steel can reach over 600A. Therefore, the used welding gun must contain a water circulation cooling device, and the welding gun is cooled in time to take away heat so as to ensure the normal use of the welding gun. At present, a deep fusion welding gun at home and abroad only cools a contact tube or a tungsten needle independently, the integral cooling effect is poor, and the stable welding of large current cannot be maintained for a long time. At present, the relatively stable welding current is maintained within 500A, the advantages of the deep penetration welding process cannot be exerted to the maximum extent, and the requirements on reliability and stability of industrial production cannot be met.

The invention content is as follows:

the invention provides an integrated efficient cooling deep fusion welding gun, which solves the problem of cooling the whole structure of the deep fusion welding gun, ensures that heating parts such as a tungsten electrode, a conductive nozzle, a nozzle and the like are simultaneously cooled, and ensures that the welding gun can stably run for a long time during heavy current welding.

The invention aims to solve the technical problems and adopts the scheme that the integrated efficient cooling deep fusion welding gun comprises a welding gun body, wherein a water inlet channel, a water outlet channel, an air inlet channel and a conductive binding post are downwards arranged at the top of the welding gun body; the openings of the protection nozzle, the nozzle and the conductive nozzle are all arranged on the same axis, the electrode is installed in the inner cavity of the conductive nozzle after sequentially passing through the openings of the protection nozzle, the nozzle and the conductive nozzle from the lower direction of the welding gun body, the conductive binding post is contacted with the conductive nozzle and the nozzle, and the water inlet channel is communicated with the water outlet channel.

In one embodiment, the inner cavity of the contact tube is communicated with the water inlet channel through a water flow channel, the inner cavity of the nozzle is communicated with the water outlet channel through a water flow channel, and the cavity formed between the contact tube and the nozzle is communicated with the air inlet channel through an air flow channel.

In one embodiment, the cooling water flows into the inner cavity of the contact tube through the water inlet channel and the water flow channel, flows into the inner cavity of the nozzle through the water flow channel, and finally reaches the water outlet channel from the inner cavity of the nozzle through the water flow channel and flows out.

In one embodiment, the gas flows from the gas inlet channel into the cavity formed between the contact tip and the nozzle and then flows out of the opening of the protection tip.

In one embodiment, the water inlet channel is arranged at the central position of the welding gun body; the two water outlet channels are arranged at symmetrical positions on two sides of the water inlet channel; the air inlet channel and the conductive binding posts are respectively arranged at the symmetrical positions of the other two sides of the water inlet channel.

In one embodiment, the electrode is a copper tungsten composite electrode.

In one embodiment, cooling water is passed through the water inlet channel with a water temperature below 10 ℃.

In one embodiment, the conductive post, the contact tip, and the nozzle are all made of all copper.

In one embodiment, the shape of the protection nozzle is a duckbill shape with a small taper.

In one embodiment, a sealing cover is provided on the top of the torch body.

The invention provides the following main advantages:

(1) this novel welder not only can cool off fast the electrode that generates heat more seriously, can also realize whole cooling to welding torch contact tube, nozzle.

(2) The conventional tungsten needle with a single structure is changed into a copper-tungsten composite electrode, so that the thermal conductivity can be increased, and the production cost can be reduced.

(3) The conventional cylindrical protective mouth is changed into a duck-bill shape with small taper. The protection mouth diminishes, and the welding needle can better welding contact fillet weld's narrow department, can weld the fillet structure except butt weld.

(4) This novel structure's welder can make the cooling water through the preliminary treatment get into welder's cooling water passageway, and the reposition of redundant personnel is three routes: one path cools the electrode and the contact tip, and the other two paths cool the contact tip. Wherein, one path of cooling water cools the electrode and the contact tip and then flows to the contact tip cooling water channel together with the intersection of the flow channel at the other side of the contact tip, and then is discharged through the water outlet channel, thereby realizing the integral cooling of the tungsten electrode, the contact tip and the nozzle.

Description of the drawings:

the above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:

FIG. 1 illustrates an overall structure of a welding torch according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of a contact tip and its cooling water circulation according to an embodiment of the present invention;

FIG. 3a discloses a conventional all tungsten needle electrode in one embodiment of the prior art;

FIG. 3b illustrates the electrodes of a copper tungsten composite needle in accordance with an embodiment of the present invention;

FIG. 4 illustrates a perspective view of a welding torch according to an embodiment of the present invention;

FIG. 5 illustrates a top view of a torch in accordance with an embodiment of the present invention.

The specific implementation mode is as follows:

in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Referring to fig. 1 and fig. 2-5, in an embodiment, an integrated efficient cooling deep fusion welding torch includes a torch body 6, a water inlet channel 10, water outlet channels 11 and 13, an air inlet channel 12, and a conductive binding post 9 are formed downward at the top of the torch body 6, a protective nozzle 5 is disposed at the bottom of the torch body 6, a nozzle 4 is disposed in an inner cavity of the protective nozzle 5, and a conductive nozzle 2 is disposed in an inner cavity of the nozzle 4; the openings of the protective nozzle 5, the nozzle 4 and the contact tube 2 are all arranged on the same axis, the electrode 1 is arranged in the inner cavity of the contact tube 2 after sequentially passing through the openings of the protective nozzle 5, the nozzle 4 and the contact tube 2 from the lower direction of the welding gun body 6, the conductive binding post 9 is in contact with the contact tube 2 and the nozzle 4, and the water inlet channel 10 is communicated with the water outlet channel 11.

Preferably, the inner cavity of the contact tip 2 is communicated with the water inlet channel 10 through the water flow channel 16, the inner cavity of the nozzle 4 is communicated with the water outlet channel 11 through the water flow channel 16, and the cavity formed between the contact tip 2 and the nozzle 4 is communicated with the air inlet channel 12 through the air flow channel.

Preferably, the cooling water flows into the inner cavity 3 of the contact tip through the water inlet channel 10 and the water flow channel, flows into the inner cavity of the nozzle 4 through the water flow channel 16, and finally flows out from the inner cavity of the nozzle 4 to the water outlet channels 11 and 13 through the water flow channel.

Preferably, the gas flows from the gas inlet channel 12 through the gas flow channel 17 into the cavity formed between the contact tip 2 and the nozzle 4, and then flows out from the opening of the protection tip 5.

Preferably, the water inlet channel 10 is arranged at the central position of the welding gun body 6; the two water outlet channels are arranged at symmetrical positions on two sides of the water inlet channel 10; the air inlet channel 12 and the conductive binding post 9 are respectively arranged on the symmetrical positions of the other two sides of the water inlet channel 10.

Preferably, the electrode 1 is a copper tungsten composite electrode.

Preferably, cooling water is passed through said water inlet channel 10, the water temperature being lower than 10 ℃.

Preferably, the conductive post 9, the contact tip 2 and the nozzle 4 are all made of copper.

Preferably, the shape of the protection spout 5 is a duckbill shape with a small taper.

Preferably, a sealing cover 14 is provided on the top of the torch body.

Fig. 3a shows an electrode needle made of a tungsten material 100 in an embodiment of the prior art, and fig. 3b shows an electrode needle made of a composite of a copper material 101 and a tungsten material 100 in an embodiment of the present invention.

It will be appreciated that an insulator 15 is also provided on the inner wall of the torch body in order to enhance the insulating effect.

It is also understood that: and the shielding gas symmetrically enters the shielding gas circulation channels at the two sides through the shielding gas inlet channel and finally reaches the welding area of the copper-tungsten composite electrode. The heating parts such as the copper-tungsten composite electrode, the contact tip and the nozzle can be cooled simultaneously, so that the welding gun can stably run for a long time in a large-current welding state.

It is also understood that: the conductive binding post is in contact with the conductive nozzle and the nozzle, so that the conductive binding post and the conductive nozzle are mutually conducted after being electrified.

It is also understood that: the connection part of the water inlet channel and the water flow channel is connected together in a seamless mode, the copper-tungsten composite electrode is installed in the conductive nozzle, and the connection part of the air inlet channel and the air flow channel is connected together in a seamless mode.

The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.