Detachable split type air plug

Abstract

The utility model discloses a detachable split type gas plug relates to argon arc welding gun accessory technical field. The gas plug includes gas plug flow guide piece and gas plug screen, both adopt detachable connection, realize gas plug screen quick replacement, only need to replace the preceding section screen, and the accessory consumption is greatly reduced. The gas plug screen is specially designed, and the mesh shape, size and distribution are optimized, so that the protective gas is uniformly sprayed, and the gas protection effect is significantly improved. At the same time, compared with the traditional nozzle, the gas effect of the gas plug is improved by 20%, and the gas utilization rate is effectively improved. By replacing different specifications of screen, the demand of gas flow and protection effect of various welding working conditions can be met, and practicability and economy are combined.

Description

Technical Field

[0001] This utility model relates to the technical field of argon arc welding gun accessories, specifically to a detachable split-type air plug that achieves convenient screen replacement and flexible adaptation to different welding conditions by improving the air plug installation method. Background Technology

[0002] In TIG welding, the gas plug, as a key component of the welding torch, plays a crucial role in guiding and filtering the shielding gas, and its performance directly affects the welding quality. Currently, most TIG welding torch gas plugs on the market are of a single, 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 spare parts and increases operating costs, but also involves a cumbersome replacement process, requiring the disassembly of multiple components and consuming a significant amount of time, severely impacting welding efficiency. Furthermore, integral gas plugs cannot quickly replace gas plug screens of different sizes according to different welding conditions, such as welding materials, welding current, and welding speed, making it difficult to achieve precise control of shielding gas flow and distribution, resulting in poor gas shielding effect and failing to meet the diverse needs of TIG welding operations. Utility Model Content

[0003] The purpose of this invention is to provide a detachable, split-type gas plug. Through innovative structural design, it enables the rapid replacement of screens of different sizes on a single gas plug kit, meeting the requirements for gas protection under different welding conditions, improving the efficiency and quality of argon arc welding operations, and reducing the cost of accessories.

[0004] The technical solution of this utility model is: a detachable split-type air plug, including an air plug guide and an air plug screen;

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

[0006] The guide tube is a hollow cylindrical tube. The tail end of the guide tube is provided with a first external thread, which is used to fix it to the gun head. The head end of the guide tube is provided with a first internal thread. A vent hole is formed 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 hood is composed of a bottom surface and an outer circumferential surface. The bottom surface of the drainage hood has a central hole and is fitted and fixed to the tube body of the guide tube. A ring of ventilation holes is wrapped in the inner cavity of the drainage hood. The outer surface of the outer circumferential surface of the drainage hood is also machined with a second external thread.

[0008] The airlock screen includes a screen body and a connecting pipe; the screen body has a central hole 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 has a central through hole that can pass through a tungsten rod.

[0009] The air plug screen and the air plug guide are detachably and fixedly connected by the threaded connection of the third external thread and the first internal thread. This threaded connection method is simple in structure, strong in connection and easy to operate. When replacing the screen, it can be easily disassembled and installed by simply rotating the screen.

[0010] The inner surface of the ceramic cover is machined with a second internal thread, which is matched with the second external thread to make the air plug screen and the flow guide cover wrapped inside the ceramic cover; the gas in the guide tube flows from the vent hole to the inner cavity of the flow guide cover and then flows out through the screen body.

[0011] Furthermore, the gas plug screen comprises multiple screens, each with a different mesh size. The screen sheets are available in various sizes and specifications, with the mesh size, shape, and overall dimensions of the screen sheet specifically designed for different welding conditions. For example, when welding thinner materials, a screen sheet with smaller mesh size and relatively lower gas flow rate can be selected to avoid impact on the thin material due to excessive gas flow; while when welding thicker materials or performing high-current welding, a screen sheet with larger mesh size and higher gas flow rate can be used to ensure that the protective gas fully covers the welding area and improves the gas protection effect.

[0012] The beneficial effects of this invention are: the detachable, split-type gas plug not only enables quick replacement of the screen sheet but also has a significant gas-saving effect. Through optimized design of the gas plug structure (selecting different specifications of screen sheets according to different needs), the gas flow between the guide component and the screen sheet is smoother, reducing gas loss. Compared with conventional guide components, it can save approximately 20% of gas consumption, effectively reducing the gas usage cost of argon arc welding operations. Attached Figure Description

[0013] Figure 1 A schematic diagram showing the installation of a detachable, split-type gas plug in an argon arc welding torch;

[0014] Figure 2 This is a schematic diagram of the air plug guide structure;

[0015] Figure 3 This is a schematic diagram of the airlock screen structure;

[0016] Figure 4 This is a schematic diagram of the ceramic cover structure.

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

[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-type air 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 flow guide shroud 12. The guide tube 11 is a hollow cylindrical tube, and the tail end of the guide tube 11 is provided with a first external thread 13, which is used for fixed connection with the nozzle head 5. The head end of the guide tube 11 is provided with a first internal thread 14. A ring of vent holes 15 is formed on the tube body of the guide tube 11 between the first external thread 13 and the first internal thread 14 in the circumferential direction. The flow guide shroud 12 is composed of a bottom surface 16 and an outer circumferential surface 17. The bottom surface 16 of the flow guide shroud has a central hole and is fitted and fixed to the tube body of the guide tube 11, enclosing the ring of vent holes 15 in the inner cavity of the flow guide shroud 12. The outer surface of the outer circumferential surface 17 of the flow guide shroud is also machined with a second external thread.

[0020] The airlock screen 2 includes a screen body 21 and a connecting pipe 22. The screen body 21 has a central hole and is fitted 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 has a central through hole through which the tungsten rod 3 can pass. The airlock screen 2 and the airlock guide 1 are detachably and fixedly connected by the threaded connection between the third external thread and the first internal thread 14. This threaded connection method is simple in structure, firmly connected, and easy to operate. When replacing the screen, it can be easily disassembled and installed by simply rotating the screen.

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

[0022] Preferably, the gas plug screen 2 comprises multiple screens, each with a different mesh size in its screen body 21. The screen sheets are available in various sizes and specifications, with the mesh size, shape, and overall dimensions designed specifically for different welding conditions. For example, when welding thinner materials, a screen sheet with smaller mesh size and relatively lower gas flow rate can be used to avoid impact on the thin material due to excessive gas flow. Conversely, when welding thicker materials or performing high-current welding, a screen sheet with larger mesh size and higher gas flow rate can be used to ensure that the protective gas fully covers the welding area, improving the gas protection effect.

[0023] Referring to Figure 1, in actual TIG welding operations, when welding metal plates of different thicknesses, the screen can be quickly changed according to the specific welding conditions. For example, when welding thinner stainless steel plates, a screen with smaller mesh sizes is selected. In this case, the flow guide is installed on the TIG welding torch head, and the screen is tightened and fixed to the internal thread of the flow guide by rotation. During the welding process, the screen with smaller mesh sizes allows the shielding gas to be ejected in a more uniform, stable, and moderate flow rate, effectively avoiding problems such as deformation of thin plates caused by excessive gas flow, thus ensuring welding quality.

[0024] When welding thicker metal plates, stop the welding operation, rotate the screen counterclockwise to remove it from the flow guide, and replace it with a screen with a larger mesh size. Install and secure it using the same threaded connection method. The replaced screen allows the shielding gas to be ejected at a greater flow rate, ensuring adequate gas protection for the welding area under high-current welding conditions, effectively preventing weld oxidation, and improving the strength and quality of the weld joint.

[0025] Throughout the welding process, because the gas plug of this invention adopts a detachable and split structure, only the screen plate needs to be replaced, without replacing the entire gas plug, which greatly reduces the replacement time of parts and improves welding efficiency. At the same time, the approximately 20% gas saving effect also significantly reduces the cost of argon arc welding operations.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A detachable, split-type air plug, characterized in that: Includes air plug guide (1) and air plug screen (2); The air plug guide (1) includes a guide pipe (11) and a flow shield (12); The guide tube (11) is a hollow cylindrical tube. The tail end of the guide tube (11) is provided with a first external thread (13), which is used to fix it to the gun head (5). The head end of the guide tube (11) is provided with a first internal thread (14). A vent hole (15) is opened 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 hood (12) is composed of a bottom surface (16) and an outer circumferential surface (17) of the drainage hood. The bottom surface (16) of the drainage hood has a central hole and is fitted and fixed on the tube body of the guide tube (11). A ring of ventilation holes (15) is wrapped in the inner cavity of the drainage hood (12). The outer surface of the outer circumferential surface (17) of the drainage hood is also machined with a second external thread. The airlock screen (2) includes a screen body (21) and a connecting pipe (22); the screen body (21) has a central hole and is fitted 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) has a central through hole that can pass through the tungsten rod (3). The air plug screen (2) and the air plug guide (1) are detachably fixedly connected by the threaded connection of the third external thread and the first internal thread (14). The inner surface of the ceramic cover (4) is machined with a second internal thread (41). Through the matching connection between the second internal thread (41) and the second external thread, the air plug screen (2) and the flow guide (12) are wrapped inside the ceramic cover (4). The gas in the guide pipe (11) flows from the vent (15) to the inner cavity of the flow guide (12) and then flows out through the screen body (21).

2. The detachable split-type air plug according to claim 1, characterized in that: The air plug screen (2) includes multiple screens, and the mesh size of the screen body (21) of each air plug screen (2) is different.

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