Welding gun extension device and welding gun

Abstract

The utility model belongs to the technical field of welding, and discloses a welding gun extension device and a welding gun. The welding gun extension device comprises a first welding pipe and a second welding pipe, a first wire feeding pipe is arranged in the first welding pipe, and one end of the first welding pipe is used for being connected with a welding nozzle; a first wire feeding pipe is arranged in the first welding pipe, a second wire feeding pipe is arranged in the second welding pipe, the second welding pipe is connected with the second welding pipe, one end of the second welding pipe is used for being connected with a handle, and when the first welding pipe is connected with the second welding pipe, the first wire feeding pipe is communicated with the second wire feeding pipe. According to the welding gun extending device, the welding gun can directly extend into a narrow area so as to weld the narrow area, meanwhile, a structure near the welding area does not need to be dismantled, time and labor are saved, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding torch extension device. Background Technique

[0002] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. During the shipbuilding process, there are always some closing areas with a relatively large linear length in the outfitting parts, the bow and the stern. The outfitting parts or narrow areas are too deep, resulting in the inability of ordinary welding tools to perform welding, with great construction difficulty and seriously affecting the welding progress and production schedule. Sometimes, in order to ensure the welding work in a small area, it is necessary to open relatively large relevant process holes to ensure the relevant construction welding. Especially when welding the end hinges of container ships and the triangular cabin areas of the dredgers under construction, in order to meet the requirements of ship inspection, some narrow areas must be welded.

[0003] When welders weld in narrow and deep areas, ordinary welding torches cannot cover this area. In order to weld deep areas, it is only possible to remove the nearby structures, which is time-consuming, laborious and has a relatively high production cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a welding torch extension device, which enables the welding torch to directly extend into narrow areas, so as to weld narrow areas. At the same time, there is no need to remove the structures near the welding area, which is time-saving, labor-saving and has a relatively low production cost.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a welding torch extension device is provided, which is connected between the welding nozzle and the handle. The welding torch extension device includes:

[0007] A first welding pipe, in which a first wire feeding pipe is arranged. One end of the first welding pipe is used to connect with the welding nozzle, and one end of the first wire feeding pipe is used to communicate with the welding nozzle.

[0008] A second welding pipe, in which a second wire feeding pipe is arranged for feeding welding wire. The second welding pipe is connected with the first welding pipe. One end of the second welding pipe is used to connect with the handle. When the first welding pipe and the second welding pipe are connected, the first wire feeding pipe is communicated with the second wire feeding pipe.

[0009] Preferably, one of the first welding pipe and the second welding pipe is provided with an external thread, and the other is provided with an internal thread, and the first welding pipe and the second welding pipe are threadedly connected.

[0010] Preferably, the outer wall of the second welded pipe is wrapped with an insulating layer.

[0011] Preferably, the first welded tube is made of memory alloy.

[0012] Preferably, the welding gun extension device further comprises a first sealing member, and the first sealing member is arranged between the first welding pipe and the second welding pipe.

[0013] Preferably, the first sealing member includes a first protrusion, the first protrusion is arranged along the connection direction of the first welding pipe and the second welding pipe, and the first protrusion is arranged as an elastic member.

[0014] Preferably, the first welding pipe includes a first connecting portion, and the first connecting portion is used to be connected to the welding nozzle.

[0015] Preferably, the second welding pipe includes a second connecting portion, and the second connecting portion is used to be connected to the handle.

[0016] Preferably, the welding gun extension device further comprises a second sealing member, and the second sealing member is arranged between the second welding tube and the handle.

[0017] On the other hand, a welding gun is provided, comprising a welding nozzle, a handle and a welding gun extension device as described in any one of the above items, wherein the first welding pipe and the second welding pipe are sequentially connected between the welding nozzle and the handle.

[0018] Beneficial effects of the utility model:

[0019] The welding gun extension device provided by the utility model comprises a first welding tube and a second welding tube, the first welding tube and the second welding tube are connected, one end of the first welding tube is used to connect with the welding nozzle, and one end of the second welding tube is used to connect with the handle. The arrangement of the first welding tube and the second welding tube increases the distance between the welding nozzle and the handle, so that the welding gun can directly extend into a narrow area, thereby welding the narrow area, and there is no need to dismantle the structure near the welding area, which saves time and effort and has a low production cost. A first wire feeding tube is arranged in the first welding tube, and a second wire feeding tube is arranged in the second welding tube. When the first welding tube and the second welding tube are connected, the first wire feeding tube and the second wire feeding tube are connected, the first wire feeding tube is used to connect with the welding nozzle, and the second wire feeding tube is used to feed the welding wire, thereby ensuring that the welding gun can perform welding work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a welding gun extension device and a welding nozzle provided in an embodiment of the utility model;

[0021] Figure 2 is a side view of a second welded pipe provided in an embodiment of the utility model;

[0022] Figure 3 is the front view of the second welding pipe provided by the embodiment of the present utility model;

[0023] Figure 4 is the side view of the first wire feeding pipe provided by the embodiment of the present utility model;

[0024] Figure 5 is the front view of the first wire feeding pipe provided by the embodiment of the present utility model;

[0025] Figure 6 is the side view of the first seal provided by the embodiment of the present utility model;

[0026] Figure 7 is the front view of the first seal provided by the embodiment of the present utility model.

[0027] In the figure:

[0028] 1. First welding pipe; 11. First wire feeding pipe; 12. First connecting part;

[0029] 2. Second welding pipe; 21. Second wire feeding pipe; 22. Second connecting part; 23. Installation channel;

[0030] 3. First seal; 31. First convex part;

[0031] 4. Second seal; 41. Second convex part;

[0032] 5. Air inlet hole;

[0033] 100. Welding nozzle. Detailed implementation manners

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the convenience of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0035] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] As Figures 1 to 7 shown, this embodiment provides a welding torch extension device and a welding torch, which can perform welding work on narrow and deep areas. In some embodiments, the welding torch extension device includes a first welding pipe 1 and a second welding pipe 2. A first wire feeding pipe 11 is provided inside the first welding pipe 1. One end of the first welding pipe 1 is used to connect with a welding nozzle 100, and the first wire feeding pipe 11 is used to communicate with the welding nozzle 100; a second wire feeding pipe 21 is used for feeding the welding wire. The second welding pipe 2 is connected to the first welding pipe 1. One end of the second welding pipe 2 is used to connect with a handle. When the first welding pipe 1 and the second welding pipe 2 are connected, the first wire feeding pipe 11 communicates with the second wire feeding pipe 21.

[0039] The first welding pipe 1 and the second welding pipe 2 are connected. The first welding pipe 1 is used to connect with the welding nozzle 100, and one end of the second welding pipe 2 is used to connect with the handle. The settings of the first welding pipe 1 and the second welding pipe 2 increase the distance between the welding nozzle 100 and the handle, enabling the welding torch to directly extend into a narrow area, so as to weld the narrow area. At the same time, there is no need to remove the structures near the welding area, which saves time and effort and has a relatively low production cost. A first wire feeding pipe 11 is provided inside the first welding pipe 1, and a second wire feeding pipe 21 is provided inside the second welding pipe 2. When the first welding pipe 1 and the second welding pipe 2 are connected, the first wire feeding pipe 11 and the second wire feeding pipe 21 communicate. The first wire feeding pipe 11 is used to communicate with the welding nozzle 100, and the second wire feeding pipe 21 is used for feeding the welding wire, ensuring that the welding torch can perform welding work normally.

[0040] Specifically, to facilitate the arrangement of the second wire feeding tube 21 within the second welding tube 2, an installation channel 23 is provided inside the second welding tube 2, and the second wire feeding tube 21 is placed within the installation channel 23.

[0041] To facilitate the connection between the first welding tube 1 and the second welding tube 2, one of the first welding tube 1 and the second welding tube 2 is provided with an external thread (not shown in the figure), and the other is provided with an internal thread (not shown in the figure). The first welding tube 1 and the second welding tube 2 are threadedly connected. After the first welding tube 1 and the second welding tube 2 are threadedly connected, they are fixed to each other. At this time, the first wire feeding tube 11 inside the first welding tube 1 and the second wire feeding tube 21 inside the second welding tube 2 can maintain a butted and connected state, ensuring that the welding torch can perform the welding work normally.

[0042] Specifically, to ensure that the welding torch can perform the welding work normally, a plurality of air inlet holes 5 are respectively provided in both the first welding tube 1 and the second welding tube 2. The setting of the air inlet holes 5 in the first welding tube 1 and the second welding tube 2 is prior art and will not be elaborated here.

[0043] Furthermore, the outer wall of the second welding tube 2 is wrapped with an insulating layer. Since high-voltage current is generated during the operation of the welding torch, the presence of the insulating layer can prevent the current from leaking, ensuring the personal safety of the user.

[0044] Preferably, the material of the first welding tube 1 is a shape memory alloy. Specifically, in this embodiment, the first welding tube 1 is arranged as a bent spring. The material of the first welding tube 1 being a shape memory alloy enables the first welding tube 1 to be manually adjusted to any angle by an external force, and the first welding tube 1 can be fixed at a specific angle without the action of an external force. According to the situation of the area to be welded on-site, the bending angle of the first welding tube 1 can be adjusted arbitrarily, making the welding torch applicable to a wider range of welding situations.

[0045] To ensure the sealing performance between the first welding tube 1 and the second welding tube 2, the welding torch extension device further includes a first sealing member 3, and the first sealing member 3 is arranged between the first welding tube 1 and the second welding tube 2. Specifically, the material of the first sealing member 3 can be silicone, rubber or other materials.

[0046] Furthermore, the first seal 3 includes a first convex portion 31. The first convex portion 31 is arranged along the connection direction of the first welded pipe 1 and the second welded pipe 2, and the material of the first convex portion 31 is an elastic material. The first convex portion 31 has elasticity. During the screwing process of the first welded pipe 1 and the second welded pipe 2, the first welded pipe 1 and the second welded pipe 2 continuously squeeze the first convex portion 31. Eventually, the first convex portion 31 is pressed and deformed, so as to circumferentially fill the gap between the first welded pipe 1 and the second welded pipe 2, further improving the sealing performance between the first welded pipe 1 and the second welded pipe 2. Specifically, there are two first convex portions 31, and the two first convex portions 31 are arranged oppositely. After the two first convex portions 31 are squeezed, a larger sealing area is obtained, and thus the sealing effect is better.

[0047] To facilitate the connection between the first welded pipe 1 and the welding nozzle 100, the first welded pipe 1 includes a first connection portion 12, and the first connection portion 12 is used to connect with the welding nozzle 100.

[0048] To facilitate the connection between the second welded pipe 2 and the handle, the second welded pipe 2 includes a second connection portion 22, and the second connection portion 22 is used to connect with the handle.

[0049] To ensure the sealing performance between the second welded pipe 2 and the handle, the welding torch extension device further includes a second seal 4, and the second seal 4 is arranged between the second welded pipe 2 and the handle.

[0050] Furthermore, the second seal 4 includes a second convex portion 41. The second convex portion 41 is arranged along the extension direction of the second welded pipe 2 and the handle, and the material of the second convex portion 41 is an elastic material. The second convex portion 41 has elasticity. During the connection process of the second welded pipe 2 and the handle, the second welded pipe 2 and the handle continuously squeeze the second convex portion 41. Eventually, the second convex portion 41 is pressed and deformed, so as to circumferentially fill the gap between the second welded pipe 2 and the handle, further improving the sealing performance between the second welded pipe 2 and the handle. Specifically, there are two second convex portions 41, and the two second convex portions 41 are arranged oppositely. After the two second convex portions 41 are squeezed, a larger sealing area is obtained, and thus the sealing effect is better.

[0051] Preferably, to facilitate the movement of the welding torch extension device in a narrow space, the welding torch extension device further includes a locking member, a rotary bearing and a roller. The locking member is fixedly connected to the second welded pipe 2, the rotary bearing is rotatably connected to the locking member, and the roller is fixedly connected to the rotary bearing. The rotary bearing enables the roller to rotate in any direction, facilitating the movement of the roller to drive the welding torch extension device. At the same time, the locking member, the rotary bearing and the roller play a supporting role for the welding torch extension device, facilitating the welding operation.

[0052] This embodiment also provides a welding torch, which includes a welding nozzle 100, a handle and a welding torch extension device. The first welding pipe 1 and the second welding pipe 2 are sequentially connected between the welding nozzle 100 and the handle. Specifically, in this embodiment, the connection mode between the second welding pipe 2 and the handle is a screw connection.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A welding torch extension device is connected between a welding tip (100) and a handle, and is characterized in that, Comprising: A first welding pipe (1), in which a first wire feeding pipe (11) is arranged. One end of the first welding pipe (1) is used to connect with the welding nozzle (100), and one end of the first wire feeding pipe (11) is used to communicate with the welding nozzle (100). A second welding pipe (2), in which a second wire feeding pipe (21) is arranged. The second wire feeding pipe (21) is used for feeding the welding wire. The second welding pipe (2) is connected to the first welding pipe (1), and one end of the second welding pipe (2) is used to connect with the handle. When the first welding pipe (1) and the second welding pipe (2) are connected, the first wire feeding pipe (11) communicates with the second wire feeding pipe (21).

2. The welding torch extension device according to claim 1, characterized in that, One of the first welding pipe (1) and the second welding pipe (2) is provided with an external thread, and the other is provided with an internal thread. The first welding pipe (1) and the second welding pipe (2) are threadedly connected.

3. The welding torch extension device according to claim 1, characterized in that, The outer wall of the second welding pipe (2) is wrapped with an insulating layer.

4. The welding torch extension device according to claim 1, wherein The material of the first welding pipe (1) is a shape memory alloy.

5. The welding torch extension device according to claim 1, characterized in that The welding torch extension device further includes a first seal (3), and the first seal (3) is arranged between the first welding pipe (1) and the second welding pipe (2).

6. The welding torch extension device according to claim 5, characterized in that, The first seal (3) includes a first protrusion (31), and the first protrusion (31) is arranged along the extending direction of the first welding pipe (1) and the second welding pipe (2). The first protrusion (31) is set as an elastic member.

7. The welding torch extension device according to any one of claims 1-6, characterized in that, The first welding pipe (1) includes a first connection part (12), and the first connection part (12) is used to connect with the welding nozzle (100).

8. The welding torch extension device according to any one of claims 1-6, characterized in that, The second welding pipe (2) includes a second connection part (22), and the second connection part (22) is used to connect with the handle.

9. The welding torch extension device according to any one of claims 1-6, characterized in that, The welding torch extension device further includes a second seal (4), and the second seal (4) is arranged between the second welding pipe (2) and the handle.

10. A welding torch, characterized in that, Comprising a welding nozzle (100), a handle and the welding torch extension device according to any one of claims 1-9, and the first welding pipe (1) and the second welding pipe (2) are sequentially connected between the welding nozzle (100) and the handle.

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