Pulse arc welding equipment for air conditioner copper pipe

Abstract

The present application relates to electric arc welding machine technical field, specifically, it relates to a kind of for air conditioner copper pipe pulse electric arc welding equipment, comprising: electric arc welding machine, the electric arc welding machine is used to carry out electric arc welding to air conditioner copper pipe, rack cleaning mechanism, the rack cleaning mechanism is arranged on the electric arc welding machine, the rack cleaning mechanism is used to position the air conditioner copper pipe to be welded to make the air conditioner copper pipe to be welded accurately to welding position receive the welding of the electric arc welding machine, gas filling mechanism, the gas filling mechanism is installed on the welding head of the electric arc welding machine and is connected with the rack cleaning mechanism, the gas filling mechanism can discharge inert protective gas when welding, to cover three-dimensionally welding site, after completing the cleaning of air conditioner copper pipe, it can be immediately sent to welding, substantially shorten the distance between cleaning process and welding process intermediate link, effectively avoid introducing secondary pollution, effectively ensure welding quality.

Description

Technical Field

[0001] This invention relates to the field of arc welding machine technology, and more specifically, to a pulse arc welding device for air conditioning copper pipes. Background Technology

[0002] With the rapid development of the refrigeration and air conditioning industry, increasingly stringent requirements have been placed on the welding quality of copper pipes, a key connecting component in air conditioning systems. Air conditioning copper pipes are like the "blood vessels" of an air conditioner, responsible for transporting refrigerant and ensuring its circulation between the indoor and outdoor units to achieve heat exchange. The airtightness, mechanical strength, and internal cleanliness of the copper pipe weld joints directly affect the energy efficiency, reliability, and lifespan of the entire air conditioning system. Air conditioning copper pipes play a core role in refrigerant transport within the refrigeration system, and the quality requirements for their weld joints are far higher than those for ordinary structural components.

[0003] Arc welding is widely used in the welding of copper pipes for air conditioners due to its advantages such as high welding quality and wide applicability. However, arc welding is extremely sensitive to contaminants. In existing production lines, cleaning processes are often separated from welding processes, and secondary contamination can easily be introduced in the intermediate steps, thus affecting welding quality. In addition, in actual production, welding speed is often increased to improve production efficiency. However, excessive speed will cause the inert shielding gas to fail to fully cover the rapidly moving high-temperature area, failing to form effective protection. This will lead to defects such as porosity and inclusions in the weld, affecting the density of the weld and ultimately reducing the mechanical properties and corrosion resistance of the copper pipe joint. Summary of the Invention

[0004] The purpose of this invention is to provide a pulsed arc welding device for air conditioning copper pipes to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides a pulsed arc welding device for air conditioning copper pipes, comprising: An electric arc welding machine, wherein the electric arc welding machine is used for electric arc welding of air conditioning copper pipes; A stand cleaning mechanism is installed on the arc welding machine. The stand cleaning mechanism is used to position the air conditioning copper pipe to be welded so that the air conditioning copper pipe to be welded is accurately positioned to accept the welding of the arc welding machine. The stand cleaning mechanism can directly clean the air conditioning copper pipe to be welded on the arc welding machine so that the cleaning process of the air conditioning copper pipe to be welded is close to the welding position. An inflation mechanism is installed on the welding head of the arc welding machine and connected to the platform cleaning mechanism. The inflation mechanism can release inert protective gas during welding to three-dimensionally encapsulate the welding part.

[0006] Furthermore, the platform cleaning mechanism includes: Two support-type slides are installed on the arc welding machine and located on both sides of the welding head, with one end of the support-type slide open and the other end closed. The two outer handles are respectively mounted on the two support-type slides; A cylindrical self-centering clamp, wherein two cylindrical self-centering clamps are respectively installed in two outer handles, and the cylindrical self-centering clamps are used to clamp air conditioning copper pipes; Threaded interfaces, two of which are respectively disposed on the back of the two cylindrical self-centering clamps, and the threaded interfaces are connected to the center of the cylindrical self-centering clamps. The closed end of the support slide has magnetic attraction. When the outer handle is inserted along the open end of the support slide and continuously slid and pulled, the outer handle can be attached to the closed end of the support slide. At this time, the closed end of the support slide will hold the outer handle. The two cylindrical self-centering clamps face each other and their axes coincide; One of the two pillar-type slides is capable of moving back and forth relative to the other.

[0007] Furthermore, the platform cleaning mechanism also includes: A vertical plate is mounted on the arc welding machine and located beside the two column-type slides; A magnetic suction port is installed on the upright plate, and the outer handle can be fitted into the magnetic suction port. The bottom pile head is mounted on the arc welding machine; An intermediate boom, which is rotatably mounted on the bottom pile head; A support platform, which is mounted on the arc welding machine; The motor is mounted on the support platform; Two gears are respectively mounted on the output shaft of the motor and the intermediate arm, and the two gears mesh with each other; A connecting disc body, which is installed at the end of the intermediate arm; A fixing plate, wherein the fixing plate is mounted on the connecting disc body; An arc-shaped cleaning pad is mounted on the front side of the fixed plate; A water supply structure is installed on the back of the fixed plate and passes through the fixed plate to contact the arc-shaped cleaning plate. The water supply structure is capable of supplying water stored in it to the arc-shaped cleaning plate to wet the arc-shaped cleaning plate.

[0008] Furthermore, the magnetic suction port is rotatably connected to the upright plate, and there is a damping force between them; Twisting the magnetic suction port can tilt it to an inclined position, at which point the magnetic suction port, the cylindrical self-centering clamp, the arc-shaped cleaning plate, and the intermediate arm are aligned.

[0009] Furthermore, the inflation mechanism includes: A hollow component is mounted on the welding head, and the hollow component is adjacent to the end of the welding head; An annular outlet is connected and installed on the hollow component, and the annular outlet is close to and surrounds the welding head; The hollow component is connected to an external inert gas tank via a pipe.

[0010] Furthermore, the inflation mechanism also includes: A delivery pipe, one end of which can be screwed onto the threaded interface; The other end of the delivery pipe is connected to an external inert gas tank.

[0011] Furthermore, a three-way valve is installed on the delivery pipe, and another connector of the three-way valve is connected to a high-pressure air pump via an air pipe.

[0012] Furthermore, the platform cleaning mechanism also includes: Grinding disc, which is fixed on the connecting disc body.

[0013] Furthermore, the intermediate arm has a linear telescopic reshaping function.

[0014] Furthermore, the arc welding machine is equipped with a static receiving dish; The stationary receiving dish is located below the fixed plate and the intermediate arm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This pulse arc welding equipment for air conditioning copper pipes can quickly and accurately connect two air conditioning copper pipes to be welded through the table cleaning mechanism. This not only greatly facilitates the positioning of the air conditioning copper pipes, but also ensures the concentricity of the copper pipes to be welded, especially during butt welding and sleeve welding, thereby ensuring the quality of the final welded air conditioning copper pipes and the consistency of the welding quality. This pulse arc welding equipment for air conditioning copper pipes can directly clean the welding end of the air conditioning copper pipe on the arc welding machine and near the welding position through the table cleaning mechanism. This allows the air conditioning copper pipe to be sent for welding immediately after cleaning, which greatly shortens the distance between the cleaning process and the welding process, effectively avoids the introduction of secondary pollution, and strongly ensures the welding quality. In addition, the table cleaning mechanism can pre-clean the air conditioning copper pipe to be welded later while the arc welding machine is welding, ensuring efficiency. This pulse arc welding equipment for air conditioning copper pipes can clean the welding end of the air conditioning copper pipe and grind the end face of the copper pipe to be welded at the same time through the table cleaning mechanism, thereby removing burrs on the end face and integrating more steps in the entire welding process, simplifying the equipment and improving processing efficiency. This pulsed arc welding equipment for air conditioning copper pipes can deliver inert protective gas to the welding area simultaneously from both inside and outside through a gas filling mechanism. Together with the original gas protection mechanism of the arc welding machine, the welding area is surrounded by inert protective gas, providing it with all-round protection. This ensures that the welding area is effectively protected even when the welding speed is increased, avoiding defects such as porosity and inclusions in the weld after welding, and ensuring the weld density and welding quality at the copper pipe joints. This pulse arc welding equipment for air conditioning copper pipes can release a high-pressure gas jet into the finished air conditioning copper pipe after welding through an air filling mechanism. This powerfully blows away all the impurities inside the welded air conditioning copper pipe, ensuring the cleanliness of the internal parts of the air conditioning copper pipe and eliminating the need for subsequent separate internal cleaning operations. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 A perspective view of the present invention is shown; Figure 2 A second perspective view of the present invention is shown; Figure 3 A third perspective view of the present invention is shown; Figure 4 A fourth perspective view of the present invention is shown; Figure 5 A fifth perspective view of the present invention is shown; Figure 6 A sixth perspective view of the present invention is shown; Figure 7 The present invention is shown. Figure 2 Enlarged view of point A; Figure 8 The present invention is shown. Figure 3 Enlarged view of point B; Figure 9 The present invention is shown. Figure 4 Enlarged view of point C; Figure 10 The present invention is shown. Figure 5 Enlarged view of point D; Figure 11 The present invention is shown. Figure 6 Enlarged view of point E.

[0018] In the figure, the same reference numerals represent the same structural element, wherein: 1. Arc welding machine; 2. Stand cleaning mechanism; 21. Support slide; 22. Outer handle; 23. Cylindrical self-centering clamp; 24. Threaded interface; 25. Vertical plate; 26. Magnetic port; 27. Bottom pile head; 28. Intermediate arm; 29. ​​Support platform; 291. Motor; 292. Gear; 293. Connecting disc; 294. Solid plate; 295. Arc-shaped cleaning plate; 296. Water supply structure; 297. Grinding disc; 3. Air inflation mechanism; 31. Hollow part; 32. Annular outlet; 33. Conveying pipe; 331. Three-way valve; 332. Air pipe; 4. Welding head; 5. Static receiving dish. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0020] like Figure 1-11 As shown, a pulsed arc welding device for air conditioning copper pipes includes: Arc welding machine 1, which is used for arc welding of air conditioning copper pipes; A stand cleaning mechanism 2 is installed on the arc welding machine 1. The stand cleaning mechanism 2 is used to position the air conditioning copper pipe to be welded so that the air conditioning copper pipe to be welded is accurately positioned to accept the welding of the arc welding machine 1. The stand cleaning mechanism 2 can directly clean the air conditioning copper pipe to be welded on the arc welding machine 1 so that the cleaning process of the air conditioning copper pipe to be welded is close to the welding position. An inflation mechanism 3 is installed on the welding head 4 of the arc welding machine 1 and connected to the platform cleaning mechanism 2. The inflation mechanism 3 releases inert protective gas during welding to three-dimensionally encapsulate the welding area. The platform cleaning mechanism 2 enables the rapid and precise joining of two air conditioning copper pipes to be welded, greatly facilitating the positioning of the copper pipes and ensuring concentricity, especially during butt welding and sleeve welding. This ensures the quality of the final welded air conditioning copper pipes and the consistency of the welding quality. The platform cleaning mechanism 2 can directly clean the welding ends of the air conditioning copper pipes on the arc welding machine 1 near the welding position, allowing them to be immediately sent for welding after cleaning. This significantly shortens the distance between the cleaning and welding processes, effectively avoiding secondary contamination and ensuring welding quality. Furthermore, the platform cleaning mechanism 2 can pre-clean the air conditioning copper pipes to be welded during the arc welding machine 1's welding process. The copper pipe adjustment mechanism ensures efficiency. The stand cleaning mechanism 2 can clean the welding end of the air conditioning copper pipe and grind the end face of the copper pipe to be welded at the same time, thereby removing burrs from the end face. It integrates more steps in the entire welding process, simplifying equipment and improving processing efficiency. The gas filling mechanism 3 can deliver inert protective gas to the welding area from both inside and outside. Together with the original gas protection mechanism of the arc welding machine 1, the welding area is surrounded by inert protective gas, which provides all-round protection. This ensures that the welding area is effectively protected even when the welding speed is increased, avoiding defects such as porosity and inclusions in the weld after welding. It ensures the weld density and the welding quality at the copper pipe joint. In addition, the gas filling mechanism 3 can release a high-pressure gas jet into the finished air conditioning copper pipe after welding, which can forcefully blow away all the impurities inside the welded air conditioning copper pipe, ensuring the internal cleanliness of the air conditioning copper pipe and eliminating the need for subsequent separate internal cleaning operations.

[0021] Optionally, the platform cleaning mechanism 2 includes: Two support slides 21 are provided on the arc welding machine 1 and located on both sides of the welding head 4, with one end of each support slide 21 being open and the other end being closed. Outer handle 22, the two outer handles 22 are respectively disposed on the two support slides 21; The cylindrical self-centering clamp 23 is installed in the two outer handles 22 respectively. The cylindrical self-centering clamp 23 is used to clamp the air conditioning copper pipe. The principle of the cylindrical self-centering clamp 23 is the same as that of the self-centering clamp such as the three-jaw chuck. It is the prior art and will not be described in detail here. Threaded interface 24, two threaded interfaces 24 are respectively disposed on the back of the two cylindrical self-centering clamps 23, and the threaded interface 24 communicates with the center of the cylindrical self-centering clamp 23. After the copper tube is clamped into the cylindrical self-centering clamp 23, the copper tube is directly facing the threaded interface 24. The closed end of the support slide 21 has magnetic attraction. When the outer handle 22 is inserted along the open end of the support slide 21 and continuously slid and pulled, the outer handle 22 can be attached to the closed end of the support slide 21. At this time, the closed end of the support slide 21 will attract the outer handle 22. Two cylindrical self-centering clamps 23 face each other with their axes overlapping. After clamping the tail of the air conditioning copper pipe to be welded into the cylindrical self-centering clamp 23 and cleaning the welding end, directly hold the outer handle 22 and insert it along the open end of the support slide 21 and pull it until the outer handle 22 is attached to the closed end of the support slide 21. The closed end of the support slide 21 can then attract the outer handle 22, thereby fixing the air conditioning copper pipe. Then, use the same method to install the other outer handle 22 onto the other support slide 21 to fix the other air conditioning copper pipe. After both outer handles 22 are in place and attracted, the clamping and positioning of the two air conditioning copper pipes to be welded is completed. It is fast and efficient, and can make the two air conditioning copper pipes to be welded accurately connected, ensuring the concentricity of the two copper pipes, especially during butt welding and sleeve welding, so as to ensure the quality of the final welded air conditioning copper pipe and the consistency of the welding quality. One of the two support slides 21 can move back and forth relative to the other. By adjusting the position of the support slide 21, one copper pipe can be moved away from or closer to the other copper pipe, ensuring that the relative position between the copper pipes to be welded meets the welding requirements, so as to ensure that it can accommodate air conditioning copper pipes of different lengths.

[0022] Optionally, the platform cleaning mechanism 2 further includes: A vertical plate 25 is mounted on the arc welding machine 1 and located beside the two support slides 21. A magnetic suction port 26 is installed on the upright plate 25, and the outer handle 22 can be fitted into the magnetic suction port 26. The bottom pile head 27 is mounted on the arc welding machine 1; Intermediate arm 28, which is rotatably mounted on the bottom pile head 27; Support platform 29, which is mounted on the arc welding machine 1; Motor 291, the motor 291 is mounted on the support 29; Gear 292, two gears 292 are respectively mounted on the output shaft of the motor 291 and the intermediate arm 28, and the two gears 292 mesh; Connecting disc 293, which is installed at the end of the intermediate arm 28; A fixing plate 294 is mounted on the connecting disc body 293; An arc-shaped cleaning plate 295 is mounted on the front side of the fixed plate 294; A water supply structure 296 is installed on the back of the fixed plate 294 and passes through the fixed plate 294 to contact the arc-shaped cleaning plate 295. The water supply structure 296 can supply water stored in it to the arc-shaped cleaning plate 295 to wet it and keep it moist. After clamping the air conditioning copper pipe into the cylindrical self-centering clamp 23, the outer handle 22 is inserted into the magnetic port 26 so that it is attracted by the magnetic port 26 and fixed together with the air conditioning copper pipe. At this time, the end of the air conditioning copper pipe to be welded rests on the arc-shaped cleaning plate 295. The arc-shaped cleaning plate 295 is pressed down slightly, and there is a certain friction between the two. Then the motor 291 is started, and the intermediate arm 28 is driven by the meshing of two gears 292 to the bottom pile head 27. The plate rotates upwards, causing the solid plate 294, the arc-shaped cleaning plate 295, and the water supply structure 296 to rotate via the connecting plate 293. The wet arc-shaped cleaning plate 295 continuously rotates against the end of the air conditioning copper pipe to be welded, performing cleaning. After cleaning, the outer handle 22 is removed and fixed in the support slide 21. Then, the other copper pipe to be welded is cleaned in the same way and installed in another support slide 21 before welding. The cleaning process is carried out on the arc welding machine 1 near the welding position. After cleaning, it can be sent for welding immediately, greatly shortening the distance between the cleaning process and the welding process, effectively avoiding the introduction of secondary pollution, and ensuring welding quality. During welding, the copper pipes to be welded later can continue to be cleaned in advance to ensure efficiency.

[0023] Optionally, the magnetic suction port 26 is rotatably connected to the upright plate 25, and there is a damping force between them. That is, although the magnetic suction port 26 can rotate relative to the upright plate 25, there is a certain friction between them. A certain force needs to be applied to rotate the magnetic suction port 26, so that after the magnetic suction port 26 is turned, it can be positioned in the current position and does not move randomly. Twisting the magnetic suction port 26 can tilt it to an inclined position. At this time, the magnetic suction port 26, the cylindrical self-centering clamp 23, the arc-shaped cleaning plate 295, and the intermediate arm 28 are aligned. After inserting the outer handle 22 into the magnetic suction port 26, twist the magnetic suction port 26 downwards until the air conditioning copper pipe encased in the cylindrical self-centering clamp 23 is pressed onto the arc-shaped cleaning plate 295 at an angle downwards. In this way, when cleaning the air conditioning copper pipe, the contaminants wiped off and the water that may be squeezed off the arc-shaped cleaning plate 295 can fall off naturally under the action of gravity, avoiding contamination of the outer wall of the air conditioning copper pipe or flowing into the air conditioning copper pipe and causing unnecessary pollution.

[0024] Optionally, the inflation mechanism 3 includes: Hollow component 31, the hollow component 31 is mounted on the welding head 4, and the hollow component 31 is adjacent to the end of the welding head 4; An annular outlet 32 ​​is connected and installed on the hollow component 31, and the annular outlet 32 ​​is close to and surrounds the welding head 4; The hollow component 31 is connected to an external inert gas tank via a pipe; A delivery pipe 33, one end of which can be screwed onto the threaded interface 24; The other end of the delivery pipe 33 is connected to an external inert gas tank. Before welding, the delivery pipe 33 is screwed onto the threaded interface 24 and the external inert gas tank is opened, allowing the inert protective gas to enter the hollow part 31 and then be sprayed outward through the annular outlet 32. The welding head 4 ensures that the inert protective gas is always sprayed directly and accurately onto the welding area. At the same time, the inert protective gas enters the cylindrical self-centering fixture 23 along the delivery pipe 33 and the threaded interface 24, allowing the inert protective gas to penetrate into the copper tube directly opposite the threaded interface 24. Since the two copper tubes are concentrically connected, the inert protective gas also enters the other copper tube. Finally, the gas exits from the threaded interface 24 on that side, ensuring that the inert protective gas always fills the copper tube during the welding process, providing comprehensive protection for the entire interior of the copper tube, including the welding area. In addition, together with the original gas protection mechanism on the arc welding machine 1, the welding area is always surrounded by inert protective gas and receives all-round protection. This ensures that even when the welding speed is increased, the rapidly moving welding area can be effectively protected, avoiding defects such as porosity and inclusions in the weld after welding, and ensuring the weld density and welding quality of the copper tube joint.

[0025] Optionally, a three-way valve 331 is installed on the delivery pipe 33. The other connector of the three-way valve 331 is connected to a high-pressure air pump through an air pipe 332. During welding, the connector of the three-way valve 331 connected to the air pipe 332 is closed to ensure the unobstructed flow of the delivery pipe 33. After welding, the two outer handles 22 are kept fixed on the two support slides 21 to keep the welded copper pipe in position. Then, the connector connected to the air pipe 332 is opened and the high-pressure air pump is started to generate a high-pressure jet of air. The airflow is input into the welded copper pipe along the air pipe 332, the delivery pipe 33, and the threaded interface 24, which powerfully blows away all the debris inside the welded air conditioning copper pipe, ensuring the cleanliness of the air conditioning copper pipe. There is no need to perform a separate internal cleaning operation on the copper pipe afterward. This achieves two goals at once, integrating more of the processes in the whole process, simplifying the steps and improving efficiency.

[0026] Optionally, the platform cleaning mechanism 2 further includes: Grinding disc 297 is fixed on the connecting disc body 293. When the end of the copper tube to be welded is pressed on the arc-shaped cleaning disc 295, its end face rests on the grinding disc 297. When the copper tube is cleaned, the grinding disc 297 rotates with the connecting disc body 293, thereby rubbing the end face of the copper tube to grind it, removing burrs and other foreign objects from the end face, further ensuring the quality of welding, achieving two goals at once.

[0027] Optionally, the intermediate arm 28 has a linear telescopic reshaping function, that is, the intermediate arm 28 is a telescopic arm, which can extend or shorten to make the connecting disc 293 move forward or backward, so as to ensure that copper tubes of different lengths can be pressed on the arc-shaped cleaning plate 295 and rest on the grinding plate 297, to accommodate copper tubes of different lengths.

[0028] Optionally, the arc welding machine 1 is equipped with a static receiving dish 5; The stationary receiving dish 5 is located below the fixed plate 294 and the intermediate arm 28. The stationary receiving dish 5 can catch the contaminants wiped off during cleaning and the water that may be squeezed off the arc-shaped cleaning plate 295, and then pour it out directly, avoiding direct drop onto the arc welding machine 1 and thus increasing the cleaning burden.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pulsed arc welding device for air conditioning copper pipes, characterized in that, include: Arc welding machine (1), the arc welding machine (1) is used for arc welding of air conditioning copper pipes; A stand cleaning mechanism (2) is installed on the arc welding machine (1). The stand cleaning mechanism (2) is used to position the air conditioning copper pipe to be welded so that the air conditioning copper pipe to be welded is accurately positioned to accept the welding of the arc welding machine (1). The stand cleaning mechanism (2) can directly clean the air conditioning copper pipe to be welded on the arc welding machine (1) so that the cleaning process of the air conditioning copper pipe to be welded is close to the welding position. The gas filling mechanism (3) is installed on the welding head (4) of the arc welding machine (1) and connected to the platform cleaning mechanism (2). The gas filling mechanism (3) can release inert protective gas during welding to cover the welding part in three dimensions.

2. The pulse arc welding equipment for air conditioning copper pipes as described in claim 1, characterized in that, The platform cleaning mechanism (2) includes: Two support slides (21) are provided on the arc welding machine (1) and located on both sides of the welding head (4), with one end of the support slide (21) open and the other end closed. The two outer handles (22) are respectively set on the two support slides (21); A cylindrical self-centering clamp (23) is provided, with two cylindrical self-centering clamps (23) respectively installed in two outer handles (22). The cylindrical self-centering clamps (23) are used to clamp air conditioning copper pipes. Threaded interface (24), two threaded interfaces (24) are respectively disposed on the back of the two cylindrical self-centering clamps (23), and the threaded interface (24) communicates with the cylindrical self-centering clamp (23) from the center of the clamp; The closed end of the support slide (21) has magnetic attraction. When the outer handle (22) is inserted along the open end of the support slide (21) and continuously slid and pulled, the outer handle (22) can be attached to the closed end of the support slide (21). At this time, the closed end of the support slide (21) will hold the outer handle (22). The two cylindrical self-centering clamps (23) face each other and their axes coincide; One of the two pillar-type slides (21) is able to move back and forth relative to the other.

3. The pulse arc welding equipment for air conditioning copper pipes as described in claim 2, characterized in that, The platform cleaning mechanism (2) also includes: A vertical plate (25) is mounted on the arc welding machine (1) and located beside the two support slides (21); A magnetic suction port (26) is installed on the upright plate (25), and the outer handle (22) can fit into the magnetic suction port (26). The bottom pile head (27) is installed on the arc welding machine (1); Intermediate arm (28), which is rotatably mounted on the bottom pile head (27); A support platform (29) is provided on the arc welding machine (1); A motor (291) is mounted on the support (29); Gears (292), two gears (292) are respectively mounted on the output shaft of the motor (291) and the intermediate arm (28), and the two gears (292) mesh; Connecting disc body (293), the connecting disc body (293) is installed at the end of the intermediate arm (28); A fixing plate (294) is mounted on the connecting disc body (293); An arc-shaped cleaning plate (295) is mounted on the front side of the fixed plate (294); A water supply structure (296) is installed on the back of the fixed plate (294) and passes through the fixed plate (294) to contact the arc-shaped cleaning plate (295). The water supply structure (296) can supply water stored in itself to the arc-shaped cleaning plate (295) to wet the arc-shaped cleaning plate (295).

4. The pulse arc welding equipment for air conditioning copper pipes as described in claim 3, characterized in that, The magnetic suction port (26) is rotatably connected to the upright plate (25), and there is a damping force between them; Twisting the magnetic suction port (26) can tilt it to an inclined position, at which time the magnetic suction port (26), the cylindrical self-centering clamp (23), the arc-shaped cleaning plate (295), and the intermediate arm (28) are aligned.

5. The pulse arc welding equipment for air conditioning copper pipes as described in claim 4, characterized in that, The inflation mechanism (3) includes: A hollow component (31) is mounted on the welding head (4) and the hollow component (31) is adjacent to the end of the welding head (4); An annular outlet (32) is connected to the hollow component (31) and the annular outlet (32) is close to and surrounds the welding head (4); The hollow component (31) is connected to an external inert gas tank via a pipe.

6. The pulse arc welding equipment for air conditioning copper pipes as described in claim 5, characterized in that, The inflation mechanism (3) further includes: A delivery pipe (33), one end of which can be screwed onto the threaded interface (24); The other end of the delivery pipe (33) is connected to an external inert gas tank.

7. The pulse arc welding equipment for air conditioning copper pipes as described in claim 6, characterized in that, The delivery pipe (33) is equipped with a three-way valve (331), and the other connector of the three-way valve (331) is connected to a high-pressure air pump through an air pipe (332).

8. The pulse arc welding equipment for air conditioning copper pipes as described in claim 7, characterized in that, The platform cleaning mechanism (2) also includes: Grinding disc (297), which is fixed on the connecting disc body (293).

9. The pulse arc welding equipment for air conditioning copper pipes as described in claim 8, characterized in that, The intermediate arm (28) has a linear telescopic reshaping function.

10. The pulse arc welding equipment for air conditioning copper pipes as described in claim 9, characterized in that, The arc welding machine (1) is equipped with a static receiving dish (5); The stationary receiving dish (5) is located below the fixed plate (294) and the intermediate arm (28).

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