Argon arc welding gun

Abstract

The utility model discloses an argon arc welding gun which comprises a welding head, a connecting piece, a flow guide pipe and a tail cap, the welding head, the flow guide pipe and the tail cap are all in threaded connection with the connecting piece, the flow guide pipe comprises a central pipe set and an insulating sleeve, wire pipe clamps are arranged on the periphery of the flow guide pipe, and the wire pipe clamps are divided into an upper wire pipe clamp and a lower wire pipe clamp. Arc-shaped structures matched with a flow guide pipe are arranged in the middle of the upper wire pipe clamp and the middle of the lower wire pipe clamp, bolt holes are formed in the two ends of the upper wire pipe clamp and the two ends of the lower wire pipe clamp, detachable connection is achieved through bolts in the bolt holes, the lower wire pipe clamp is provided with a containing groove matched with a wire feeding pipe in diameter, the wire feeding pipe penetrates through the containing groove, and the wire feeding pipe is fixedly connected with a welding gun through the wire pipe clamp. The wire feeding position of the wire feeding pipe can be adjusted through the wire pipe clamp. The wire feeding pipe is fixedly connected with the welding gun through the wire pipe clamp, meanwhile, the wire feeding pipe can adjust the wire feeding position through the wire pipe clamp to achieve the effect of accurate wire feeding, various adverse factors of manual wire feeding are reduced, and uniform welding can be achieved during welding.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an argon arc welding gun. Background Art

[0002] Gas shielded welding is an important form of welding. It has the characteristics of fast welding speed, narrow heat-affected zone, and small deformation of welds after welding. The welding process is easy to operate, with no or very little slag, and basically no need for slag cleaning after welding. It is widely used in the industrial field.

[0003] Chinese patent publication CN2064280U discloses a universal adjustable argon arc welding gun comprising a flexible conduit, a gun body, a gun head, and a pipe joint. A flexible joint and a flexible hose with both electrical and gas conduction functions are positioned between the gun body and the gun head. One end of the hose can be connected to the pipe joint on the gun head, while the other end can be connected to a conduit on the gun body. Conductive wires are also laid along the hose wall. The flexible joint can be a cross joint, a ball joint, or a metal hose. To protect the flexible joint from debris and ensure its flexible rotation, a protective sleeve can be provided on the outside of the joint. The sleeve can be reset by rotating the flexible joint.

[0004] However, during use, the welding gun requires manual feeding of the welding wire to the welding head. The welding wire is easily disturbed by external factors during welding, causing the welding wire to vibrate, thereby affecting welding stability. Furthermore, a large amount of heat is generated during welding, and the welding gun lacks effective cooling measures, making it difficult to maintain operation for a long time. Therefore, it is necessary to improve the shortcomings of the above-mentioned prior art. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a deep hole argon arc welding gun in response to the above-mentioned deficiencies in the prior art, so as to solve the problem in the prior art that the residence time is short and multiple water inlet pipes are required to cool the multiple cooling holes, so that the cooling capacity of the cooling water is not fully utilized and causes waste of resources.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an argon arc welding gun, comprising a welding head, a connecting piece, a guide tube, and a tail cap, wherein the welding head, the guide tube, and the tail cap are all threadedly connected to the connecting piece, the guide tube comprises a central tube group and an insulating sleeve, an insulating component is provided inside the insulating sleeve, one end of the central tube group is embedded in the insulating component, a wire tube clamp is provided on the outer periphery of the guide tube, the wire tube clamp is divided into an upper wire tube clamp and a lower wire tube clamp, the middle parts of the upper wire tube clamp and the lower wire tube clamp are provided with an arc that fits the outer periphery of the guide tube, bolt holes are provided at both ends of the upper wire tube clamp and the lower wire tube clamp, the upper wire tube clamp and the lower wire tube clamp are detachably connected by bolts in the bolt holes, the lower wire tube clamp is provided with a accommodating groove adapted to the diameter of the wire feeding tube, the accommodating groove is penetrated by a wire feeding tube, the middle part of the wire feeding tube is fixedly connected to the welding gun through the wire tube clamp, and the wire feeding tube can adjust the wire feeding position through the wire tube clamp.

[0007] By adopting the above technical solution: the arc design of the upper and lower wire tube clamps enables the wire tube clamps to fit tightly around the outer periphery of the guide tube. At the same time, the accommodating groove on the lower wire tube clamp allows the design of the welding gun to allow the wire feed tube to be fixedly connected to the welding gun through the wire tube clamp. This design not only ensures the stability of the wire feed tube, but also allows the wire feed tube to adjust the wire feeding position through the wire tube clamp according to actual welding needs. This flexibility greatly improves the adaptability of welding operations and weld quality, making the welding process more accurate and efficient. The design of the wire feed nozzle near one end of the wire feed tube ensures the stable wire outlet direction of the welding wire, so that the welding wire can be accurately delivered to the welding part, thereby improving the accuracy and quality of welding.

[0008] The above technical solution can be further configured as follows: a wire feeding nozzle is provided at one end of the wire feeding tube close to the welding head, the width of the wire feeding nozzle at the end close to the welding head is slightly smaller than the width at the other end, an adjustment part for easy adjustment is provided in the middle of the wire feeding nozzle, and a wire feeding hole that fits the diameter of the welding wire is provided in the middle of the end with the smaller width of the wire feeding nozzle, and the wire feeding nozzle can stabilize the wire outlet direction of the welding wire.

[0009] By adopting the above technical solution: the width of the wire feed nozzle at one end close to the welding head is slightly smaller than that at the other end. This gradually widening structure helps to guide the welding wire to smoothly transition to the welding area. The adjustment part in the middle of the wire feed nozzle makes it easy for the welder to adjust the position and angle of the wire feed nozzle as needed, making wire feeding more precise. A wire feeding hole that fits the diameter of the welding wire is provided in the middle of the end with the smaller width of the wire feed nozzle. This design ensures the stability of the wire outlet direction, reduces vibration and deviation during the wire feeding process, and further improves welding accuracy. In addition, the stable wire feeding direction of the wire feed nozzle helps to reduce spatter during welding and improve the aesthetic appearance of the weld. At the same time, this design also allows the welder to adjust the wire feeding position according to different welding requirements, making the welding process more flexible and able to adapt to various complex welding positions and angles.

[0010] The above technical solution can be further set as follows: the central pipe group includes a ventilation pipe and a water and electricity pipe, the ventilation pipe is placed inside the water and electricity pipe, the connecting part between the connector and the guide pipe is provided with a ventilation hole, the ventilation hole is connected to the ventilation pipe, and the connecting part between the tail cap and the connector is provided with a sealing ring. The tail cap can block the ventilation hole and thereby control the flow rate of the shielding gas flowing into the connector, and the guide pipe passes the shielding gas into the connector through the ventilation pipe and then into the welding head.

[0011] By adopting the above technical solution: the water and electricity pipes are arranged concentrically with the ventilation pipes, the water and electricity pipes are sheathed around the outer periphery of the ventilation pipes, the water and electricity pipes are connected to the power supply and cooling water is introduced into the water and electricity pipes, and the welding gun passes the shielding gas into the interior of the connector through the middle of the ventilation pipes, eliminating the external hose required in traditional welding guns. In addition, a vent hole is provided in the middle of the connection between the connector and the guide pipe, and the ventilation pipe is connected to the vent hole of the connector. The flow rate and direction of the shielding gas can be precisely controlled to ensure that the welding area is fully protected, effectively preventing the occurrence of defects such as welding oxidation and porosity, thereby significantly improving welding quality. At the same time, the optimized welding process parameters can adapt to different working environments and material properties, enhancing the adaptability and reliability of the welding process.

[0012] The above technical solution can be further configured as follows: the welding head includes a tungsten electrode, a ceramic shielding nozzle, and a filter screen, one end of the tungsten electrode is arranged inside the ceramic shielding nozzle, and the other end extends out of the outer periphery of the ceramic shielding nozzle, the filter screen is nested inside the ceramic shielding nozzle and arranged around the tungsten electrode, and the connecting part passes the shielding gas to the tungsten electrode through the filter screen.

[0013] By adopting the above technical solution, the welding head design ensures arc stability and effective weld protection during tungsten inert gas (TIG) welding. With one end of the tungsten electrode positioned inside the ceramic shield tip and the other extending beyond the periphery, this layout helps concentrate the arc and protect the weld area from oxidation, thereby improving weld quality. Furthermore, the connector directs the shielding gas to the tungsten electrode through a filter, ensuring uniform distribution and flow of the shielding gas, enhancing protection of the weld area and helping to prevent the formation of porosity and other defects during welding. Furthermore, the ceramic shield tip not only provides excellent electrical insulation but also, due to its high-temperature resistance, remains stable even in the high-temperature environments of welding. The filter further ensures pure and even flow of the shielding gas, which is crucial for preventing oxidation and improving weld quality. Overall, this welding head design improves welding efficiency and weld quality by optimizing the tungsten electrode position and shielding gas flow, while also reducing operator workload and achieving efficient, high-quality welding results.

[0014] The above technical solution can be further configured as follows: an insulating sleeve is provided between the ceramic protective nozzle and the connector, the ceramic protective nozzle is clamped to the connector through the insulating sleeve, a tungsten electrode clamp is nested inside the insulating sleeve, and the tungsten electrode clamp can fix the tungsten electrode at the welding head.

[0015] By adopting the above technical solution, the insulating sleeve design between the ceramic shield and the connector not only provides excellent electrical insulation performance, but also enhances the stability of the overall structure. The presence of the insulating sleeve effectively prevents the accidental conduction of current, protecting the safety of operators and also protecting the equipment from electrical faults. The tungsten electrode can be detachably connected to the welding head through the tungsten electrode clamp. The ceramic shield ensures a secure connection through the insulating sleeve and the connector, while also facilitating installation and maintenance, and improving the ease of use and reliability of the welding equipment. In addition, this design helps reduce heat conduction, protecting the connector from high temperatures, thereby extending the service life of the entire welding system.

[0016] The above technical solution can be further configured as follows: a shielding gas joint is provided at the end of the guide tube away from the welding head, the shielding gas joint is detachably connected to the central tube group, the shielding gas joint is a hollow structure, and the welding gun introduces shielding gas into the ventilation pipe through the shielding gas joint.

[0017] By adopting the above technical solution, the design of the flow guide tube ensures an efficient and stable supply of shielding gas. The hollow structure of the shielding gas connector allows the welding gun to directly introduce shielding gas into the ventilation tube, ensuring sufficient protection of the welding area and thus improving welding quality. Furthermore, the clip-on connection between the shielding gas connector and the center tube assembly not only ensures a secure connection but also facilitates quick installation and maintenance, improving work efficiency. This design also helps reduce shielding gas waste, conserving resources and protecting the environment.

[0018] The above technical solution can be further configured as follows: a water inlet and electrical interface and a water outlet interface are provided on the outer periphery of the guide pipe, at least two cooling pipes are provided inside the water and electrical pipe, one end of the cooling pipe is connected to the end of the adjacent cooling pipe in the same direction, and the cooling pipe forms a cooling circuit, one end of the cooling circuit is connected to the water inlet and electrical interface, and the other end is connected to the water outlet interface.

[0019] By adopting the above technical solution: since the cooling pipeline is composed of more than two pipelines connected in sequence, cooling water flows through the water inlet electrical interface, through each cooling pipeline and out of the water outlet interface to form a cooling circuit during welding, while reducing the use of multiple pipeline valves or multiple water inlet interfaces, while extending the water flow stroke inside the water-passing electrical pipe, increasing the stroke of cooling water inside the water-passing electrical pipe, that is, delaying the retention time, and increasing the contact area between the cooling water and the inside of the water-passing electrical pipe, thereby improving the cooling efficiency, better protecting the welding gun, and ensuring that the welding gun can work for a long time and at high intensity, and the current is supplied to the welding gun through the water inlet electrical interface connected to the positive pole of the power supply, thereby improving the overall convenience of the welding gun.

[0020] The above technical solution can be further configured as follows: the cooling pipe includes a first pipe connected to the water inlet and electrical interface, a second pipe connected to the other end of the first pipe, a third pipe connected to the other end of the second pipe, and a fourth pipe connected to the other end of the third pipe. The other end of the fourth pipe is connected to the water outlet interface. The first pipe, the second pipe, the third pipe, and the fourth pipe all extend from one end to the other end of the water and electrical pipe. The water inlet and electrical interface, the water outlet interface, the first pipe, the second pipe, the third pipe, and the fourth pipe form a cooling circuit.

[0021] By adopting the above technical solution: the first pipeline, the second pipeline, the third pipeline, and the fourth pipeline are connected in sequence to form an internal loop of the insulating outer tube, forming two round trips of water in the insulating outer tube, which increases the travel of the cooling water inside the insulating outer tube, that is, delays the retention time, and increases the contact area between the cooling water and the inside of the insulating outer tube, thereby improving the cooling efficiency.

[0022] The above technical solution can be further set as: the water inlet and electrical interface is a quick-plug interface with a central through hole for water inlet and conductive outer periphery; the water inlet and electrical interface are detachably connected to the water and electricity pipe and its central through hole is connected to the first pipe; the water outlet interface is connected to the water and electricity pipe and is connected to the fourth pipe.

[0023] By adopting the above technical solution, the central through-hole and peripheral conductive design of the water inlet and electrical interface not only achieves the simultaneous transmission of water and electrical signals, but also, through a modular design, makes the connection and removal of the water inlet and electrical interface to the water and electrical pipes quick and easy. This design ensures unobstructed water flow while also improving system safety and avoiding safety issues caused by the mixing of water and electricity. Furthermore, by optimizing the design of the water and electrical circuits, the system reduces energy loss and improves energy efficiency, thereby achieving energy conservation and high efficiency. This interface design also has excellent environmental adaptability, suitable for a variety of environmental conditions, while reducing production and maintenance costs, providing users with a safe and economical solution.

[0024] The beneficial effects of the argon arc welding gun described in this application are:

[0025] First, the wire feeding tube is fixed by the upper wire tube clamp and the lower wire tube clamp, so that the wire feeding tube can be stably fixed on the welding gun. The position of the wire tube clamp relative to the guide tube and the wire tube clamp can be moved to adjust the wire feeding position of the wire feeding tube according to actual needs. At the same time, a wire feeding nozzle is provided at the end of the wire feeding tube close to the welding head. The wire feeding nozzle can stabilize the wire feeding direction of the welding wire in the wire feeding tube, which helps to reduce spatter during welding and improve the aesthetic appearance of the weld.

[0026] Secondly, by arranging at least two cooling pipes inside the water-passing electricity pipe, the water inlet and outlet interfaces are connected with the cold zone pipe to form a cooling circuit surrounding the water-passing electricity pipe, thereby improving the convenience of introducing cooling water, extending the water flow stroke, increasing the stroke of cooling water inside the water-passing electricity pipe, namely delaying the retention time, and increasing the contact area between the cooling water and the inside of the water-passing electricity pipe, thereby effectively improving the cooling efficiency, better protecting the welding gun, and ensuring the stability and durability of the welding gun under long-term high-intensity work.

[0027] Third, the welding quality is optimized. The welding head design concentrates the arc and protects the weld area from oxidation, improving welding quality. Furthermore, the design of directing the shielding gas to the tungsten electrode through a filter ensures uniform distribution and flow of the shielding gas, enhancing the protection of the weld area and helping to prevent the formation of pores and other defects during welding.

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of the utility model;

[0030] Figure 2 This is a schematic transverse cross-sectional view of the present invention;

[0031] Figure 3 This is an overall schematic diagram of the utility model from another perspective;

[0032] Figure 4 It is a vertical cross-sectional schematic diagram of the utility model;

[0033] Reference numerals: welding head 1, tungsten electrode 11, tungsten electrode fixture 111, ceramic protective nozzle 12, insulating sleeve 121, filter 13, connector 2, flow guide tube 3, central pipe group 31, ventilation pipe 311, water and electricity pipe 312, insulating sleeve 32, insulating assembly 321, water and electricity inlet interface 33, water outlet interface 34, cooling pipe 35, first pipe 351, second pipe 352, third pipe 353, fourth pipe 354, protective gas connector 36, tail cap 4, wire feeding tube 5, wire tube clamp 51, upper wire tube clamp 511, lower wire tube clamp 512, wire feeding nozzle 52, adjustment part 521. DETAILED DESCRIPTION

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 4 The argon arc welding gun shown includes a welding head 1, a connecting part 2, a guide tube 3, and a tail cap 4. The welding head 1, the guide tube 3, and the tail cap 4 are all threadedly connected to the connecting part 2. The guide tube 3 includes a central tube group 31 and an insulating sleeve 32. The tail cap 4 can control the flow rate of the shielding gas flowing into the connecting part 2. An insulating component 321 is provided inside the insulating sleeve 32. One end of the central tube group 31 is embedded in the insulating component 321. A wire tube clamp 51 is provided on the outer periphery of the guide tube. The wire tube 51 clamp is divided into an upper wire tube clamp 511 and a lower wire tube clamp 512. Bolt holes are provided at both ends of the upper wire tube clamp 511 and the lower wire tube clamp 512. The upper wire tube clamp 511 and the lower wire tube clamp 512 are detachably connected by bolts in the bolt holes. A wire feeding tube 5 is passed through the wire tube clamp 51. The middle part of the wire feeding tube 5 is fixedly connected to the welding gun through the wire tube clamp 51. The wire feeding tube 5 can adjust the wire feeding angle through the wire tube clamp 51. The curved design of the upper and lower wire clamps allows the wire clamp 51 to fit snugly around the outer circumference of the flow guide tube 3. The accommodating groove on the lower wire clamp 512 allows the welding gun to be designed so that the middle portion of the wire feed tube 5 is fixedly connected to the welding gun via the wire clamp 51. This design not only ensures the stability of the wire feed tube 5 but also allows the wire feed position of the wire feed tube 5 to be adjusted according to actual welding needs via the wire clamp 51. This flexibility greatly improves the adaptability of welding operations and weld quality, making the welding process more precise and efficient.

[0036] A wire feed nozzle 52 is provided at one end of the wire feed tube 5, near the welding head. The width of the wire feed nozzle 52 at the end near the welding head 1 is slightly smaller than that at the other end. This gradually widening structure helps guide the welding wire to smoothly transition to the welding area. A convenient adjustment portion 521 is provided in the middle of the wire feed nozzle 52, allowing the welder to adjust the position and angle of the wire feed nozzle as needed, making wire feeding more precise. A wire feed hole that fits the diameter of the welding wire is provided in the middle of the narrower end of the wire feed nozzle 52. The wire feed nozzle 52 can stabilize the wire outlet direction. This design ensures a stable wire outlet direction, reduces vibration and deviation during wire feeding, and further improves welding accuracy.

[0037] like Figure 2 、 Figure 3The central pipe group 31 shown includes a ventilation pipe 311 and a water and electricity pipe 312. The ventilation pipe 311 is placed inside the water and electricity pipe 312. The connecting part of the connector 2 and the guide pipe 3 is provided with a ventilation hole, and the ventilation hole is connected to the ventilation pipe 311. The connecting part of the tail cap 4 and the connector 2 is provided with a sealing ring. The tail cap 4 can block the ventilation hole and thereby control the flow rate of the shielding gas flowing into the connector. The guide pipe 3 passes the shielding gas into the connector 2 and then into the welding head 1 through the ventilation pipe 311. Water and electricity pipe 312 is concentrically arranged with ventilation pipe 311 and sheathed around the outer periphery of ventilation pipe 311. Power and cooling water are supplied through water and electricity pipe 312. The welding gun draws shielding gas into connector 2 through the middle of ventilation pipe 311, eliminating the need for an external hose in conventional welding guns. Furthermore, a vent hole is provided at the center of the connection between connector 2 and flow guide pipe 3. Ventilation pipe 311 communicates with the vent hole in connector 2, allowing precise control of the flow rate and direction of the shielding gas. This ensures adequate protection of the weld area, effectively preventing defects such as weld oxidation and porosity, and significantly improving weld quality. Furthermore, optimized welding process parameters can adapt to different working environments and material properties, enhancing the adaptability and reliability of the welding process.

[0038] like Figure 1 、 Figure 3 、 Figure 4 The welding head 1 shown includes a tungsten electrode 11, a ceramic shielding nozzle 12, and a filter 13. One end of the tungsten electrode 11 is located inside the ceramic shielding nozzle 12, and the other end extends out of the periphery of the ceramic shielding nozzle 12. The filter 13 is nested inside the ceramic shielding nozzle 12 and arranged around the tungsten electrode 11. The connector 2 passes the shielding gas to the tungsten electrode 11 through the filter 13. The design of the welding head 1 can ensure the arc stability and weld protection effect during the argon arc welding process of the tungsten electrode 11. One end of the tungsten electrode 11 is located inside the ceramic shielding nozzle 12, and the other end extends out of the periphery. This layout helps to concentrate the arc and protect the weld area from oxidation, thereby improving the welding quality. At the same time, the design of the connector 2 passing the shielding gas to the tungsten electrode 11 through the filter 13 ensures the uniform distribution and circulation of the shielding gas, enhances the protection effect of the weld area, and helps prevent the formation of pores and other defects during the welding process. In addition, the use of the ceramic shielding nozzle 12 not only provides good electrical insulation, but also, due to its high temperature resistance, can remain stable in the high temperature environment during the welding process. The presence of the filter 13 further ensures the purity and uniform flow of the shielding gas, which is crucial for preventing oxidation and improving weld quality during welding. Overall, this welding head 1 design improves welding process efficiency and weld quality by optimizing the position of the tungsten electrode 11 and the flow of the shielding gas, while also reducing operator workload and achieving efficient, high-quality welding results.

[0039] An insulating sleeve 121 is provided between the ceramic protective nozzle 12 and the connector 2. The ceramic protective nozzle 12 is clipped to the connector 2 through the insulating sleeve 121. A tungsten electrode clamp 111 is nested inside the insulating sleeve 121. The tungsten electrode clamp 111 can fix the tungsten electrode 11 to the welding head 1. The design of the insulating sleeve 121 between the ceramic protective nozzle 12 and the connector 2 not only provides good electrical insulation performance, but also enhances the stability of the overall structure. The presence of the insulating sleeve 121 effectively prevents the accidental conduction of current, protects the safety of the operator, and also protects the equipment from the effects of electrical faults. Through the tungsten electrode clamp 111, the tungsten electrode 11 can be detachably connected to the welding head 1. The way the ceramic protective nozzle 12 is clipped to the connector 2 through the insulating sleeve 121 ensures the firmness of the connection, while also facilitating installation and maintenance work, and improving the ease of use and reliability of the welding equipment. In addition, this design also helps to reduce heat conduction, protect the connector 2 from high temperatures, and thus extend the service life of the entire welding system.

[0040] like Figure 1 、 Figure 3 、 Figure 4 The guide tube 3 shown is provided with a shielding gas connector 36 at one end away from the welding head 1. The shielding gas connector 36 is detachably connected to the central tube group 31. The shielding gas connector 36 is a hollow structure, and the welding gun passes the shielding gas into the vent tube 311 through the shielding gas connector 36. The design of the guide tube 3 achieves an efficient and stable supply of shielding gas. The hollow structure design of the shielding gas connector 36 allows the welding gun to directly pass the shielding gas into the vent tube 311, ensuring that the welding area is fully protected, thereby improving the welding quality. At the same time, the clamping method of the shielding gas connector 36 and the central tube group 31 not only ensures the firmness of the connection, but also facilitates quick installation and maintenance, thereby improving work efficiency. In addition, this design also helps to reduce the waste of shielding gas, achieve resource conservation and environmental protection.

[0041] like Figure 2 、 Figure 3The cooling pipe 35 shown includes a first pipe 351 connected to the water inlet and power interface 33, a second pipe 352 connected to the other end of the first pipe 351, a third pipe 353 connected to the other end of the second pipe 352, and a fourth pipe 354 connected to the other end of the third pipe 353. The other end of the fourth pipe 354 is connected to the water outlet 34. The first pipe 351, the second pipe 352, the third pipe 353, and the fourth pipe 354 all extend from one end to the other end of the water and power pipe 312. The water inlet and power interface 33, the water outlet 34, the first pipe 351, the second pipe 352, the third pipe 353, and the fourth pipe 354 form a cooling circuit. The first pipe 351, the second pipe 352, the third pipe 353, and the fourth pipe 354 are connected in sequence to form a circuit inside the insulating outer tube. This creates two round trips of water inside the insulating outer tube, increasing the cooling water's travel within the insulating outer tube, i.e., delaying its residence time, while also increasing the contact area between the cooling water and the interior of the insulating outer tube, thereby improving cooling efficiency.

[0042] like Figure 1 、 Figure 3 The water inlet and electrical interface 33 shown is a quick-plug interface with a central through-hole for water inlet and a peripheral conductive surface. The water inlet and electrical interface 33 is detachably connected to the water and electrical pipe 312, and its central through-hole is connected to the first pipe 351. The water outlet interface 34 is connected to the water and electrical pipe 312 and is connected to the fourth pipe 354. The central through-hole and peripheral conductive design of the water inlet and electrical interface 33 not only achieve the simultaneous water inlet and electrical signal transmission, but also, through modular design, make the connection and disassembly between the water inlet and electrical interface 33 and the water and electrical pipe 312 quick and easy. This design ensures unobstructed water flow while also improving the safety of the system and avoiding safety issues caused by the mixing of water and electricity. In addition, by optimizing the design of the waterway and circuit, the system can reduce energy loss and improve energy efficiency, thereby achieving energy saving and high efficiency. This interface design also has good environmental adaptability and is suitable for a variety of environmental conditions. At the same time, it reduces production and maintenance costs, providing users with a safe and economical solution.

[0043] like Figures 1 to 4The guide tube 3 is shown with a water inlet and electrical connection 33 and a water outlet 34 on its outer periphery. Two or more interconnected cooling pipes 35 are located within the water-conducting electrical pipe 312, one end of each of the cooling pipes 35 being connected to the water inlet and electrical connection 33 and the other end being connected to the water outlet 34. During welding, cooling water flows through the water inlet and electrical connection 33, through the pipe assembly, and out of the water outlet 34, forming a cooling circuit. Because the cooling pipe 35 is composed of two or more pipes interconnected in sequence, this process extends the water flow within the water-conducting electrical pipe 312, increasing the cooling water's travel within the pipe 312, thereby delaying its residence time and increasing the contact area between the cooling water and the interior of the water-conducting electrical pipe 312. This improves cooling efficiency, provides better protection for the welding torch, and enables the torch to operate at high intensity for extended periods of time.

[0044] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An argon arc welding gun, comprising a welding head, a connector, a flow guide tube, and a tail cap, wherein the welding head, flow guide tube, and tail cap are all threadedly connected to the connector, the flow guide tube comprising a central tube assembly and an insulating sleeve, an insulating assembly being provided within the insulating sleeve, and one end of the central tube assembly being embedded in the insulating assembly, characterized in that: A wire tube clamp is provided on the outer periphery of the guide tube, and the wire tube clamp is divided into an upper wire tube clamp and a lower wire tube clamp. The middle parts of the upper wire tube clamp and the lower wire tube clamp are provided with an arc that fits the outer periphery of the guide tube, and bolt holes are provided at both ends of the upper wire tube clamp and the lower wire tube clamp. The upper wire tube clamp and the lower wire tube clamp are detachably connected by bolts in the bolt holes, and the lower wire tube clamp is provided with a receiving groove adapted to the diameter of the wire feeding tube, and the receiving groove is penetrated by a wire feeding tube, and the wire feeding tube is fixedly connected to the welding gun through the wire tube clamp, and the wire feeding tube can adjust the wire feeding position through the wire tube clamp.

2. The argon arc welding gun according to claim 1, characterized in that: The wire feeding tube is provided with a wire feeding nozzle at one end close to the welding head. The width of the wire feeding nozzle at the end close to the welding head is slightly smaller than the width at the other end. An adjustment portion for easy adjustment is provided in the middle of the wire feeding nozzle. A wire feeding hole that fits the diameter of the welding wire is provided in the middle of the end with the smaller width of the wire feeding nozzle. The wire feeding nozzle can stabilize the wire outlet direction of the welding wire.

3. The argon arc welding gun according to claim 2, characterized in that: The central pipe group includes a ventilation pipe and a water and electricity pipe. The ventilation pipe is placed inside the water and electricity pipe. The connecting part between the connector and the guide pipe is provided with a ventilation hole. The ventilation hole is connected to the ventilation pipe. The connecting part between the tail cap and the connector is provided with a sealing ring. The tail cap can block the ventilation hole and thus control the flow rate of the shielding gas flowing into the connector. The guide pipe passes the shielding gas into the connector through the ventilation pipe and then into the welding head.

4. The argon arc welding gun according to claim 3, characterized in that: The welding head includes a tungsten electrode, a ceramic protective nozzle, and a filter screen. One end of the tungsten electrode is arranged inside the ceramic protective nozzle, and the other end extends out of the outer periphery of the ceramic protective nozzle. The filter screen is nested inside the ceramic protective nozzle and arranged around the tungsten electrode. The connecting piece passes the protective gas to the tungsten electrode through the filter screen.

5. The argon arc welding gun according to claim 4, characterized in that: An insulating sleeve is provided between the ceramic protective nozzle and the connector, and the ceramic protective nozzle is clamped with the connector through the insulating sleeve. A tungsten electrode clamp is nested inside the insulating sleeve, and the tungsten electrode clamp can fix the tungsten electrode at the welding head.

6. The argon arc welding gun according to claim 5, characterized in that: A shielding gas connector is provided at one end of the guide tube away from the welding head. The shielding gas connector is clamped with the central tube assembly and is a hollow structure. The welding gun introduces shielding gas into the ventilation tube through the shielding gas connector.

7. The argon arc welding gun according to claim 3, characterized in that: The outer periphery of the guide pipe is provided with a water inlet and an electrical interface and a water outlet. At least two cooling pipes are provided inside the water-passing electrical pipe. One end of the cooling pipe is connected to the end of the adjacent cooling pipe at the same position. The cooling pipe forms a cooling circuit. One end of the cooling circuit is connected to the water inlet and the electrical interface, and the other end is connected to the water outlet.

8. The argon arc welding gun according to claim 7, characterized in that: The cooling pipeline includes a first pipeline connected to the water inlet and electrical interface, a second pipeline connected to the other end of the first pipeline, a third pipeline connected to the other end of the second pipeline, and a fourth pipeline connected to the other end of the third pipeline. The other end of the fourth pipeline is connected to the water outlet interface. The first pipeline, the second pipeline, the third pipeline, and the fourth pipeline all extend from one end to the other end of the water and electrical pipe. The water inlet and electrical interface, the water outlet interface, the first pipeline, the second pipeline, the third pipeline, and the fourth pipeline form a cooling circuit.

9. The argon arc welding gun according to claim 8, characterized in that: The water inlet and electrical interface is a quick-plug interface with a central through hole for water inlet and an outer conductive surface. The water inlet and electrical interface is detachably connected to the water and electrical pipe and its central through hole is connected to the first pipe. The water outlet interface is detachably connected to the water and electrical pipe and is connected to the cooling pipe.

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