Detachable split type air plug

Abstract

The invention discloses a detachable split type air plug, and relates to the technical field of argon arc welding gun accessories. The air plug comprises the air plug flow guide part and the air plug screen which are detachably connected, so that the air plug screen can be quickly replaced, only the front-section screen needs to be replaced, and the consumption of accessories is greatly reduced. The air plug screen is specially designed, and the shape, the size and the distribution of meshes are optimized, so that protective gas is uniformly sprayed out, and the gas protection effect is remarkably improved. Meanwhile, compared with a traditional nozzle, the gas plug improves the gas saving effect by 20%, and the gas utilization rate is effectively improved. By replacing the screens of different specifications, the requirements of various welding working conditions for the gas flow and the protection effect can be met, and practicability and economical efficiency are both achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of argon arc welding gun accessories, and in particular to a detachable split gas plug which realizes convenient replacement of screens and flexible adaptation to different welding conditions by improving the gas plug installation method. Background Art

[0002] In argon arc welding operations, the gas plug, as a key accessory of the argon arc welding gun, plays an important role in guiding and filtering the shielding gas. Its performance directly affects the welding quality. Currently, most of the gas plugs for argon arc welding guns on the market are of an integral structure. When the gas plug screen is damaged or cannot adapt to specific welding conditions, the entire gas plug must be replaced. This integral gas plug not only wastes accessory resources and increases the cost of use, but also the replacement process is cumbersome, requiring the disassembly of multiple parts, which consumes a lot of time and seriously affects welding efficiency. In addition, the integral gas plug cannot quickly replace gas plug screens of different sizes according to different welding conditions, such as welding materials, welding current, welding speed, etc., making it difficult to achieve precise control of the flow and distribution of the shielding gas, resulting in poor gas protection effect and an inability to meet the diverse needs of argon arc welding operations. Summary of the Invention

[0003] The purpose of the present invention is to provide a detachable split gas plug. Through innovative structural design, it is possible to quickly replace screens of different sizes on a single gas plug kit, meet the requirements for gas protection effects under different welding conditions, improve the efficiency and quality of argon arc welding operations, and reduce the cost of accessories.

[0004] The technical solution of the present invention is: a detachable split gas plug, comprising an gas plug guide and a gas plug screen;

[0005] The air plug guide member includes a guide tube and a guide cover;

[0006] The guide tube is a hollow cylindrical tube body, with a first external thread provided at the tail end of the guide tube, the first external thread being used for fixed connection with the gun head; a first internal thread provided at the head end of the guide tube; a circle of vent holes is provided on the tube body of the guide tube between the first external thread and the first internal thread along the circumferential direction;

[0007] The drainage cover is composed of a bottom surface and an outer circumferential surface of the drainage cover. The bottom surface of the drainage cover has a central opening and is fixedly mounted on the pipe body of the guide pipe, wrapping a circle of vents in the inner cavity of the drainage cover. The outer surface of the outer circumferential surface of the drainage cover is also processed with a second external thread.

[0008] The air plug screen includes a screen body and a connecting pipe; the screen body has a central opening and is sleeved and fixed to the head end of the connecting pipe, the tail end of the connecting pipe is provided with a third external thread, and the center of the connecting pipe is provided with a central through hole that can pass through the tungsten rod;

[0009] The air plug screen and the air plug guide are detachably fixedly connected by the threaded matching connection of the third external thread and the first internal thread; this threaded connection method has a simple structure, a firm connection, and is easy to operate. When replacing the screen, you only need to rotate the screen to easily disassemble and install it.

[0010] A second internal thread is processed on the inner surface of the ceramic cover, and the second internal thread is connected with the second external thread so that the air plug screen and the drainage cover are wrapped in the ceramic cover; the gas in the guide tube flows from the vent hole to the inner cavity of the drainage cover, and then flows out through the screen body.

[0011] Furthermore, the gas plug screen includes multiple meshes, each of which has a different mesh size. The screen pieces are provided with a variety of different sizes and specifications, and the mesh size, shape, and overall size of the screen pieces are specifically designed according to different welding conditions. For example, when welding thinner materials, a screen piece with a smaller mesh and a relatively small gas flow rate can be selected to avoid impact on the thin material caused by excessive gas flow. When welding thicker materials or performing high-current welding, a screen piece with a larger mesh and a higher gas flow rate can be replaced to ensure that the shielding gas can fully cover the welding area and improve the gas shielding effect.

[0012] The present invention offers the following benefits: the detachable, split gas plug not only allows for quick screen replacement but also significantly reduces gas consumption. By optimizing the gas plug structure (using screens of varying specifications based on specific requirements), gas flow between the guide and screen is smoother, reducing gas loss. Compared to conventional guides, this design can save approximately 20% of gas, effectively lowering gas costs during argon arc welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of installing a detachable split gas plug in a argon arc welding gun;

[0014] Figure 2 Schematic diagram of the structure of the air plug guide;

[0015] Figure 3 Schematic diagram of the air plug screen structure;

[0016] Figure 4 Schematic diagram of the ceramic cover structure.

[0017] In the figure: 1 is an air plug guide, 2 is an air plug screen, 3 is a tungsten rod, 4 is a ceramic cover, 5 is a gun head, 11 is a guide tube, 12 is a drainage cover, 13 is a first external thread, 14 is a first internal thread, 15 is a vent, 16 is the bottom surface of the drainage cover, 17 is the outer circumferential surface of the drainage cover, 21 is a screen body, 22 is a connecting pipe, and 41 is a second internal thread. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1-4 As shown, a detachable split gas plug includes an air plug guide 1 and an air plug screen 2. The air plug guide 1 includes a guide tube 11 and a drainage cover 12. The guide tube 11 is a hollow cylindrical tube body, and the tail end of the guide tube 11 is provided with a first external thread 13, and the first external thread 13 is used to be fixedly connected to the gun head 5. The head end of the guide tube 11 is provided with a first internal thread 14. A circle of ventilation holes 15 are provided on the tube body of the guide tube 11 between the first external thread 13 and the first internal thread 14 along the circumferential direction. The drainage cover 12 is composed of a drainage cover bottom surface 16 and a drainage cover outer circumferential surface 17. The drainage cover bottom surface 16 has a central opening and is fixed on the tube body of the guide tube 11, and a circle of ventilation holes 15 are wrapped in the inner cavity of the drainage cover 12. The outer surface of the drainage cover outer circumferential surface 17 is also processed with a second external thread.

[0020] The air plug screen 2 comprises a screen body 21 and a connecting tube 22. The screen body 21 has a central opening and is secured to the head end of the connecting tube 22. The tail end of the connecting tube 22 is provided with a third external thread. The connecting tube 22 also has a central through-hole through which the tungsten rod 3 can pass. The third external thread and the first internal thread 14 are threadedly connected, allowing the air plug screen 2 and the air plug guide 1 to be removably and fixedly connected. This threaded connection is simple in structure, secure, and easy to operate. When replacing the screen, simply rotate the screen to easily remove and install it.

[0021] The inner surface of the ceramic cover 4 is machined with a second internal thread 41. The second internal thread 41 is connected to the second external thread, so that the air plug screen 2 and the drainage cover 12 are enclosed in the ceramic cover 4. The gas in the guide tube 11 flows through the vent 15 to the inner cavity of the drainage cover 12, and then flows out through the screen body 21.

[0022] Preferably, the gas plug screen 2 includes a plurality of meshes, and the mesh body 21 of each gas plug screen 2 has a different mesh size. The screen sheet is provided with a variety of different sizes and specifications, and its mesh size, shape and overall size of the screen sheet are targeted according to different welding conditions. For example, when welding thinner materials, a screen sheet with a smaller mesh and a relatively small gas flow rate can be selected to avoid impact on the thin material due to excessive gas flow. When welding thicker materials or performing high current welding, a screen sheet with a larger mesh and a larger gas flow rate can be replaced to ensure that the shielding gas can fully cover the welding area and improve the gas shielding effect.

[0023] As shown in Figure 1, during actual argon arc welding operations, when welding metal sheets of varying thicknesses, the screen can be quickly replaced based on the specific welding conditions. For example, when welding thinner stainless steel sheets, a screen with smaller mesh size is selected. The deflector is then installed on the argon arc welding torch head and screwed securely to the internal threads of the deflector. During welding, the smaller mesh size allows the shielding gas to be discharged at a more uniform, stable, and moderate flow rate, effectively avoiding problems such as deformation of thin sheets caused by excessive gas flow, thereby ensuring weld quality.

[0024] When welding thicker metal sheets, stop welding, rotate the screen counterclockwise to remove it from the guide, and replace it with a screen with a larger mesh size, also securing it with the threaded connection. The replaced screen allows the shielding gas to be ejected at a higher flow rate, ensuring adequate gas protection in the welding area even under high-current welding conditions, effectively preventing weld oxidation and improving the strength and quality of the weld joint.

[0025] During the welding process, the gas plug of this invention utilizes a detachable, split structure, requiring only the mesh screen to be replaced, rather than the entire gas plug. This significantly reduces component replacement time and improves welding efficiency. Furthermore, the approximately 20% gas savings significantly reduces the cost of argon arc welding operations.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A detachable split gas plug, characterized by: It includes an air plug guide (1) and an air plug screen (2); The air plug guide member (1) comprises a guide tube (11) and a guide cover (12); The guide tube (11) is a hollow cylindrical tube body. The tail end of the guide tube (11) is provided with a first external thread (13), and the first external thread (13) is used to be fixedly connected to the gun head (5); the head end of the guide tube (11) is provided with a first internal thread (14); a circle of vent holes (15) is provided on the tube body of the guide tube (11) between the first external thread (13) and the first internal thread (14) along the circumferential direction; The drainage cover (12) is composed of a drainage cover bottom surface (16) and a drainage cover outer circumferential surface (17). The drainage cover bottom surface (16) has a central opening and is sleeved and fixed on the pipe body of the guide pipe (11), and a circle of vent holes (15) is wrapped in the inner cavity of the drainage cover (12). The outer surface of the drainage cover outer circumferential surface (17) is also processed with a second external thread. The air plug screen (2) comprises a screen body (21) and a connecting pipe (22); the screen body (21) has a central opening and is sleeved and fixed to the head end of the connecting pipe (22); the tail end of the connecting pipe (22) is provided with a third external thread; and the center of the connecting pipe (22) is provided with a central through hole capable of passing the tungsten rod (3); The air plug screen (2) and the air plug guide (1) are detachably fixedly connected by a threaded matching connection between a third external thread and the first internal thread (14); The inner surface of the ceramic cover (4) is processed with a second internal thread (41), and the second internal thread (41) is connected to the second external thread, so that the air plug screen (2) and the drainage cover (12) are wrapped in the ceramic cover (4); the gas in the guide tube (11) flows from the vent hole (15) to the inner cavity of the drainage cover (12), and then flows out through the screen body (21).

2. The detachable split gas plug according to claim 1, characterized in that: The air plug screen (2) comprises a plurality of air plug screens, and the mesh size of the screen body (21) of each air plug screen (2) is different.

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