Plasma welding equipment for aluminum rear clothes rack of electric vehicle

Abstract

The invention relates to the field of plasma welding, in particular to plasma welding equipment for an aluminum rear hanger of an electric vehicle, which comprises a welding table, and the top of the welding table is fixedly connected with a support frame; according to the plasma welding equipment for the aluminum rear clothes rack of the electric vehicle, by arranging the first overturning assembly, the longitudinal adjusting assembly and the second overturning assembly, when plasma welding is conducted on the rear clothes rack of the electric vehicle, the first overturning assembly can conduct transverse moving, overturning and adjusting on a welded pipe, and the longitudinal adjusting assembly can drive a welding gun to do reciprocating motion; and a second overturning assembly is used for overturning and adjusting a welding gun, so that the all-dimensional adjusting effect of the electric vehicle rear clothes rack is achieved, namely the multi-angle and movable welding effect of the electric vehicle rear clothes rack is achieved, and the problems that a six-axis robot arm needs to be used when traditional plasma welding equipment conducts welding operation, the size of the plasma welding equipment is large, and the welding efficiency is high are solved. Therefore, convenience is brought to the plasma welding operation of the small-size workpiece.

Description

Technical Field

[0001] This invention relates to the field of plasma welding, and more specifically to a plasma welding device for aluminum rear racks of electric vehicles. Background Technology

[0002] In the electric vehicle industry, lightweighting is one of the core technological paths to improve driving range and reduce energy consumption. Aluminum alloys, due to their advantages such as low density, high strength, and good corrosion resistance, are gradually replacing traditional steel and becoming the preferred material for electric vehicle frames, body panels, and various functional components. As an important component of electric vehicles, aluminum rear racks not only fulfill the practical function of carrying cargo but also affect the overall appearance and structural integrity of the vehicle. Their manufacturing quality, especially welding quality, directly relates to the product's safety, durability, and market competitiveness. Currently, in the production and manufacturing of aluminum rear racks, methods such as gas metal arc welding, laser welding, and conventional plasma welding are generally used for connection and fixation. Plasma arc welding is a welding method that uses a high-temperature, high-ionization plasma arc as a heat source. It is essentially a variant of gas metal arc welding, obtaining a plasma arc with more concentrated energy, higher temperature, and better stiffness through the "compression effect." Compared with gas metal arc welding, it has stronger welding speed and penetration ability.

[0003] Typically, when performing plasma welding on back coat hangers, the welding tube is clamped and fixed using a fixture, and then a six-axis robotic arm drives the welding torch to weld the fixed aluminum material. Since most existing plasma welding equipment is designed for heavy industry, it is mostly a large gantry or cantilever type, resulting in bulky equipment and low robotic arm movement precision. This makes it easy to cause low efficiency of the six-axis robotic arm and poor welding quality when welding small back coat hangers. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a plasma welding device for aluminum rear racks of electric vehicles.

[0005] To solve the above-mentioned technical problems, the present invention provides a plasma welding device for aluminum rear racks of electric vehicles, including a welding table. A support frame is fixedly connected to the top of the welding table, and an electric slide rail is fixedly connected to the top of the support frame. A sliding seat is movably sleeved on the top of the electric slide rail, and a movable frame is fixedly connected to the top of the sliding seat. A movable platform is movably sleeved inside the movable frame. A cylinder is fixedly installed at the bottom of the movable platform, and a rotating column is movably sleeved at the bottom of the cylinder. A welding torch is fixedly sleeved outside the rotating column. A support plate is fixedly connected to the top of the welding table, and a sliding groove is formed at the bottom of the support plate. A sliding frame is movably sleeved inside the sliding groove, and a sliding sleeve is fixedly connected to the top of the sliding frame. A rotating shaft is movably sleeved on the top of the sliding sleeve. A first flipping assembly is provided on the top of the welding table, and the first flipping assembly includes: A first motor is fixedly mounted on the front of the support plate. A transmission rod is fixedly connected to the output shaft of the first motor. A first bevel gear is fixedly sleeved on the outside of the transmission rod. A threaded rod is threadedly sleeved on the bottom of the sliding frame. A second bevel gear is fixedly sleeved on one end of the threaded rod and meshes with the first bevel gear. A toothed plate is fixedly connected to the outside of the support frame. A drive gear is fixedly sleeved on one end of the rotating shaft and meshes with the toothed plate. A first tilting frame is fixedly connected to the other end of the rotating shaft. A second tilting frame is movably sleeved inside the first tilting frame.

[0006] Preferably, a rotating assembly is provided on the side of the first tilting frame. The rotating assembly includes a second motor, which is fixedly installed on the side of the first tilting frame. A first worm gear is fixedly connected to the output shaft of the second motor, and a first worm wheel is fixedly sleeved on the side of the second tilting frame. The first worm wheel is meshed with the first worm gear.

[0007] Preferably, an auxiliary mechanism is provided at one end of the rotating shaft. The auxiliary mechanism includes a positioning sleeve, which is fixedly connected to the side of the sliding sleeve. A guide groove is provided inside the positioning sleeve, and a conductive ring is fixedly sleeved inside the guide groove. The input end of the second motor is electrically connected to a control wire, which is fixedly sleeved inside the rotating shaft. A spring contact rod is installed at one end of the control wire, and the spring contact rod is movably sleeved inside the guide groove.

[0008] Preferably, the front of the movable frame is provided with a longitudinal adjustment component, which includes a No. 3 motor. The No. 3 motor is fixedly installed on the front of the movable frame. A No. 1 threaded post is fixedly connected to the output shaft of the No. 3 motor. The No. 1 threaded post is threadedly sleeved inside the movable platform. A limit rod is movably sleeved inside the movable platform.

[0009] Preferably, a second tilting assembly is provided at the bottom of the cylinder. The second tilting assembly includes a fourth motor, which is fixedly installed at the bottom of the cylinder. A second worm gear is fixedly connected to the output shaft of the fourth motor. A second worm wheel is fixedly sleeved on the outside of the rotating column, and the second worm wheel meshes with the second worm gear.

[0010] Preferably, a sliding ball is movably sleeved on the top of the support plate, and the number of the sliding balls is several, with the several sliding balls evenly distributed on the top of the support plate.

[0011] Preferably, a lubrication assembly is provided at the bottom of one side of the support plate. The lubrication assembly includes a dust cover, which is fixedly connected to the bottom of one side of the support plate. The side of the dust cover is conical, and an oil drip nozzle is fixedly sleeved at the bottom of the dust cover. The oil drip nozzle is located above the threaded rod, and there are several oil drip nozzles. A baffle plate is fixedly connected to the outside of the support frame, and the baffle plate is located directly above the toothed plate.

[0012] Preferably, the top of the second flipping frame is provided with a fixing component, the fixing component includes a fixing seat, the fixing seat is fixedly connected to the top of the second flipping frame, the top of the fixing seat is threaded with a second threaded post, and the bottom of the second threaded post is movably fitted with a clamping plate.

[0013] The beneficial effects of this invention are as follows: (1) A plasma welding equipment for aluminum rear racks of electric vehicles is provided with a first flipping component, a longitudinal adjustment component and a second flipping component. When plasma welding of the rear rack of an electric vehicle is performed, the first flipping component can move and flip the welding pipe laterally, the longitudinal adjustment component can drive the welding torch to move back and forth, and the second flipping component can flip and adjust the welding torch. This achieves the effect of all-round adjustment of the rear rack of the electric vehicle, that is, the effect of multi-angle and moving welding of the rear rack of the electric vehicle. This avoids the problem that traditional plasma welding equipment requires a six-axis robot arm to perform welding operations, resulting in a large size of plasma welding equipment and low welding accuracy. This brings convenience to the plasma welding operation of small-volume workpieces.

[0014] (2) By setting up a rotating component and an auxiliary mechanism, when it is necessary to adjust the longitudinal rotation of the welded pipe, the No. 2 motor can drive the No. 1 worm wheel to rotate through the No. 1 worm, that is, drive the No. 2 rotating frame to rotate longitudinally, thereby achieving the longitudinal adjustment effect of the welded pipe. The conductive ring can continuously supply power to the rotating spring contact rod, that is, to stably control and supply power to the moving rotating No. 2 motor, thus avoiding the problem of difficulty in providing power when the No. 2 motor is continuously rotating, thereby achieving the longitudinal adjustment effect of the welded pipe, which brings convenience to the complex angle welding of the welded pipe.

[0015] (3) By setting up a lubrication component, when the threaded rod needs maintenance after working for a long time, lubricating oil is injected into the dust cover, so that the lubricating oil can drip onto the top of the threaded rod through several oil drip nozzles, thereby achieving the maintenance effect of the threaded rod. The shielding plate can shield and protect the tooth plate, thus avoiding the problem of damage to the tooth plate caused by long-term falling of welding slag on the surface of the tooth plate, thereby bringing convenience to the maintenance of welding equipment. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of a plasma welding device for aluminum rear racks of electric vehicles provided by the present invention; Figure 2 This is a front view of the cylinder in a plasma welding device for an aluminum rear coat rack of an electric vehicle according to the present invention. Figure 3 This is a front view of the sliding frame in a plasma welding equipment for an aluminum rear coat rack of an electric vehicle according to the present invention. Figure 4 This is a bottom view of the support plate in a plasma welding equipment for an aluminum rear coat rack of an electric vehicle according to the present invention. Figure 5 This is a side view of the welding table in a plasma welding equipment for an aluminum rear coat rack of an electric vehicle according to the present invention. Figure 6 This is a front view of the No. 1 flipping frame in the plasma welding equipment for aluminum rear coat racks of electric vehicles according to the present invention. Figure 7 This invention relates to a plasma welding equipment for aluminum rear coat racks of electric vehicles. Figure 6 Enlarged view of point A; Figure 8 This is a top view of the first flipping frame in a plasma welding equipment for an aluminum rear coat rack of an electric vehicle according to the present invention. Figure 9 This is a front view of the fixing component in a plasma welding equipment for an aluminum rear coat rack of an electric vehicle according to the present invention.

[0017] The names of the components corresponding to the markings in the above attached figures are as follows: 1. Welding table; 2. Support frame; 3. Electric slide rail; 4. Sliding seat; 5. Moving frame; 6. Moving table; 7. Cylinder; 8. Rotating column; 9. Welding torch; 10. Support plate; 11. Sliding groove; 12. Sliding frame; 13. Sliding sleeve; 14. Rotating shaft; 15. First flipping assembly; 151. First motor; 152. Transmission rod; 153. First bevel gear; 154. Threaded rod; 155. Second bevel gear; 156. Tooth plate; 157. Drive gear; 158. First flipping frame; 159. Second flipping frame; 16. Rotating assembly; 161. Second motor; 162. Worm Gear No. 1; 163. Worm Gear No. 1; 17. Auxiliary Mechanism; 171. Positioning Sleeve; 172. Guide Groove; 173. Conductive Ring; 174. Control Wire; 175. Spring Contact Rod; 18. Longitudinal Adjustment Assembly; 181. Motor No. 3; 182. Threaded Column No. 1; 183. Limiting Rod; 19. Tilting Assembly No. 2; 191. Motor No. 4; 192. Worm Gear No. 2; 193. Worm Gear No. 2; 20. Sliding Ball; 21. Lubrication Assembly; 211. Dust Cover; 212. Oil Drip No. 1; 213. Baffle Plate; 22. Fixing Assembly; 221. Fixing Base; 222. Threaded Column No. 2; 223. Clamping Plate. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 3-6As shown, the present invention provides a plasma welding device for aluminum rear racks of electric vehicles, comprising a welding table 1, a support frame 2 fixedly connected to the top of the welding table 1, an electric slide rail 3 fixedly connected to the top of the support frame 2, a sliding seat 4 movably sleeved on the top of the electric slide rail 3, a movable frame 5 fixedly connected to the top of the sliding seat 4, a movable platform 6 movably sleeved inside the movable frame 5, a cylinder 7 fixedly installed at the bottom of the movable platform 6, a rotating column 8 movably sleeved at the bottom of the cylinder 7, a welding torch 9 fixedly sleeved outside the rotating column 8, and a support plate 10 fixedly connected to the top of the welding table 1. The bottom of the support plate 10 has a sliding groove 11, and a sliding frame 12 is movably sleeved inside the sliding groove 11. A sliding sleeve 13 is fixedly connected to the top of the sliding frame 12, and a rotating shaft 14 is movably sleeved to the top of the sliding sleeve 13. A first flip assembly 15 is provided on the top of the welding table 1. The first flip assembly 15 includes a first motor 151, which is fixedly installed on the front of the support plate 10. A transmission rod 152 is fixedly connected to the output shaft of the first motor 151, and a first bevel gear 153 is fixedly sleeved on the outside of the transmission rod 152. The bottom of the sliding frame 12 is threaded with a... A threaded rod 154 has a second bevel gear 155 fixedly sleeved at one end, which meshes with a first bevel gear 153. A toothed plate 156 is fixedly connected to the outside of the support frame 2. A drive gear 157 is fixedly sleeved at one end of the rotating shaft 14, which meshes with the toothed plate 156. A first tilting frame 158 is fixedly connected to the other end of the rotating shaft 14, and a second tilting frame 159 is movably sleeved inside the first tilting frame 158. By setting the first tilting assembly 15, when performing plasma welding of the electric vehicle rear rack... The welded pipe is fixed inside the second flipping frame 159. At this time, the first motor 151 is started, which drives the two threaded rods 154 to rotate through the transmission rod 152. That is, the sliding sleeve 13 is driven to move horizontally through the sliding frame 12, thereby achieving the effect of horizontal movement of the first flipping frame 158. This causes the sliding sleeve 13 to drive the rotating shaft 14 to rotate through the drive gear 157 and the toothed plate 156, which in turn drives the welded pipe to rotate, thereby achieving the effect of flipping and moving the welded pipe, and thus achieving the effect of adjusting the welding angle and position of the welded pipe.

[0020] like Figure 6 and Figure 8As shown, a rotating assembly 16 is provided on the side of the first flipping frame 158. The rotating assembly 16 includes a second motor 161, which is fixedly installed on the side of the first flipping frame 158. A first worm gear 162 is fixedly connected to the output shaft of the second motor 161. A first worm wheel 163 is fixedly sleeved on the side of the second flipping frame 159, and the first worm wheel 163 is meshed with the first worm gear 162. By setting up the rotating assembly 16, when it is necessary to adjust the longitudinal rotation of the welded pipe, the second motor 161 is started, so that the second motor 161 drives the first worm wheel 163 to rotate through the first worm gear 162, that is, drives the second flipping frame 159 to rotate longitudinally, thereby achieving the longitudinal adjustment effect of the welded pipe and improving the multi-directional adjustment effect of the welding angle of the welded pipe.

[0021] like Figure 6 and Figure 7 As shown, an auxiliary mechanism 17 is provided at one end of the rotating shaft 14. The auxiliary mechanism 17 includes a positioning sleeve 171, which is fixedly connected to the side of the sliding sleeve 13. A guide groove 172 is provided inside the positioning sleeve 171, and a conductive ring 173 is fixedly sleeved inside the guide groove 172. The input end of the second motor 161 is electrically connected to a control wire 174, which is fixedly sleeved inside the rotating shaft 14. A spring contact rod 175 is installed at one end of the control wire 174, and the spring contact rod 175 is movably sleeved inside the guide groove 172. By setting the auxiliary mechanism 17, when the welded pipe is longitudinally flipped and adjusted, the conductive ring 173 can continuously supply power to the rotating spring contact rod 175, that is, to stably control and supply power to the moving and flipping second motor 161, thus avoiding the problem of difficulty in providing power when the second motor 161 is continuously flipping, thereby improving the convenience of controlling the second motor 161.

[0022] like Figure 1 and Figure 2 As shown, a longitudinal adjustment component 18 is provided on the front of the movable frame 5. The longitudinal adjustment component 18 includes a third motor 181, which is fixedly installed on the front of the movable frame 5. A first threaded post 182 is fixedly connected to the output shaft of the third motor 181. The first threaded post 182 is threadedly sleeved inside the movable table 6. A limit rod 183 is movably sleeved inside the movable table 6. By setting the longitudinal adjustment component 18, when the longitudinal movement adjustment of the welding torch 9 is required, the third motor 181 is started, so that the third motor 181 can drive the movable table 6 to reciprocate through the first threaded post 182, that is, drive the welding torch 9 to reciprocate through the cylinder 7, thereby achieving the longitudinal adjustment effect of the welding torch, thus bringing convenience to the longitudinal welding of welding pipes.

[0023] like Figure 2As shown, a second tilting assembly 19 is provided at the bottom of cylinder 7. The second tilting assembly 19 includes a fourth motor 191, which is fixedly installed at the bottom of cylinder 7. A second worm gear 192 is fixedly connected to the output shaft of the fourth motor 191. A second worm wheel 193 is fixedly sleeved on the outside of the rotating column 8, and the second worm wheel 193 is meshed with the second worm gear 192. By setting the second tilting assembly 19, when the welding angle of the welding gun is adjusted, the fourth motor 191 is started, so that the fourth motor 191 drives the second worm wheel 193 to rotate through the second worm gear 192, that is, the welding gun 9 is tilted through the rotating column 8, thereby achieving the effect of adjusting the welding angle of the welding gun 9, and thus improving the working range of the welding gun.

[0024] like Figure 1 and Figure 5 As shown, a sliding ball 20 is movably sleeved on the top of the support plate 10. There are several sliding balls 20, which are evenly distributed on the top of the support plate 10. By setting the sliding balls 20, when the sliding frame 12 drives the sliding sleeve 13 to move horizontally, the sliding balls 20 can support and limit the sliding sleeve 13, thus avoiding the problem of friction between the sliding sleeve 13 and the support plate 10 when the sliding sleeve 13 slides horizontally continuously. This improves the smoothness of the horizontal movement of the sliding sleeve 13, that is, improves the stability of the welded pipe when it moves.

[0025] like Figure 1 and Figure 4 As shown, a lubrication assembly 21 is provided at the bottom of one side of the support plate 10. The lubrication assembly 21 includes a dust cover 211, which is fixedly connected to the bottom of one side of the support plate 10. The side of the dust cover 211 is conical, and an oil drip nozzle 212 is fixedly sleeved at the bottom of the dust cover 211. The oil drip nozzle 212 is located above the threaded rod 154, and there are several oil drip nozzles 212. A baffle plate 213 is fixedly connected to the outside of the support frame 2, and the baffle plate 213 is located directly above the toothed plate 156. By setting up the lubrication component 21, when the threaded rod 154 needs maintenance after long-term operation, lubricating oil is injected into the dust cover 211, so that the lubricating oil can drip onto the top of the threaded rod 154 through several oil drip nozzles 212, thereby achieving the maintenance effect of the threaded rod 154. The shielding plate 213 can shield and protect the toothed plate 156, thus avoiding the problem of damage to the toothed plate 156 caused by long-term falling of welding slag, thereby bringing convenience to the maintenance of welding equipment.

[0026] like Figure 8-9As shown, a fixing component 22 is provided on the top of the second flipping frame 159. The fixing component 22 includes a fixing seat 221, which is fixedly connected to the top of the second flipping frame 159. A second threaded post 222 is threadedly sleeved on the top of the fixing seat 221, and a clamping plate 223 is movably sleeved on the bottom of the second threaded post 222. By setting the fixing component 22, when it is necessary to fix the welded pipe, the welded pipe is placed on the top of the fixing seat 221. At this time, the second threaded post 222 is rotated, so that the second threaded post 222 drives the clamping plate 223 to tightly press against the top of the welded pipe, so that the welded pipe is clamped and fixed on the top of the fixing seat 221, thereby achieving the clamping and fixing effect of the welded pipe.

[0027] The working principle of this invention is as follows: During plasma welding of the rear rack of an electric vehicle, the welding tube is fixed inside the second flipping frame 159. At this time, the first motor 151 is started, which drives the two threaded rods 154 to rotate through the transmission rod 152. That is, the sliding sleeve 13 is moved horizontally through the sliding frame 12, thereby achieving the horizontal movement of the first flipping frame 158. This causes the sliding sleeve 13 to drive the rotating shaft 14 to rotate through the drive gear 157 and the toothed plate 156, which in turn drives the welding tube to rotate, thereby achieving the effect of flipping and moving the welding tube. This achieves the effect of adjusting the welding angle and position of the welding tube. When it is necessary to adjust the longitudinal flipping of the welding tube, the second motor 161 is started, so that... Motor 161 drives worm gear 163 to rotate via worm 162, thereby causing worm gear 163 to rotate longitudinally and achieving longitudinal adjustment of the welded pipe. This improves the multi-directional adjustment of the welding angle. During longitudinal adjustment, conductive coil 173 continuously supplies power to the rotating spring contact rod 175, providing stable control and power to motor 161. This avoids the problem of insufficient power supply during continuous rotation, improving the ease of control. When longitudinal adjustment of the welding torch 9 is required, motor 181 is activated, allowing it to rotate via worm gear 162. The column 182 drives the moving table 6 to reciprocate, which in turn drives the welding torch 9 to reciprocate, thus achieving the longitudinal adjustment effect of the welding torch and facilitating longitudinal welding of pipes. When adjusting the welding angle of the welding torch, the fourth motor 191 is started, which drives the second worm gear 193 to rotate via the second worm 192, which in turn drives the welding torch 9 to rotate via the rotating column 8, thereby achieving the welding angle adjustment effect of the welding torch 9 and improving the working range of the welding torch. When the sliding frame 12 drives the sliding sleeve 13 to move horizontally, the sliding ball 20 supports and limits the sliding sleeve 13, preventing friction between the sliding sleeve 13 and the support plate 10 during continuous horizontal sliding. This improves the smoothness of the horizontal movement of the sliding sleeve 13, thus enhancing the stability of the welded pipe during movement. When the threaded rod 154 requires maintenance after prolonged operation, lubricating oil is injected into the dust cover 211, allowing it to drip onto the top of the threaded rod 154 through several drip nozzles 212, thereby achieving the maintenance effect of the threaded rod 154. The shielding plate 213 protects the toothed plate 156, preventing damage caused by welding slag falling onto its surface over time, thus facilitating the maintenance of the welding equipment. When the welded pipe needs to be fixed, it is placed on top of the fixing seat 221, and the second threaded column 222 is rotated.This allows the second threaded post 222 to drive the clamping plate 223 to tightly press against the top of the welded pipe, thus clamping and fixing the welded pipe to the top of the fixing seat 221, achieving the effect of clamping and fixing the welded pipe.

[0028] It should be noted that the present invention is not limited to the specific structure shown in the accompanying drawings in the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art.

Claims

1. A plasma welding device for aluminum rear racks of electric vehicles, characterized in that: The system includes a welding table (1), a support frame (2) fixedly connected to the top of the welding table (1), an electric slide rail (3) fixedly connected to the top of the support frame (2), a sliding seat (4) movably sleeved on the top of the electric slide rail (3), a movable frame (5) fixedly connected to the top of the sliding seat (4), a movable platform (6) movably sleeved inside the movable frame (5), a cylinder (7) fixedly installed at the bottom of the movable platform (6), and a rotating column (8) movably sleeved at the bottom of the cylinder (7). A welding torch (9) is fixedly sleeved on the outside of the welding table (1). A support plate (10) is fixedly connected to the top of the welding table (1). A sliding groove (11) is opened at the bottom of the support plate (10). A sliding frame (12) is movably sleeved inside the sliding groove (11). A sliding sleeve (13) is fixedly connected to the top of the sliding frame (12). A rotating shaft (14) is movably sleeved to the top of the sliding sleeve (13). A first flipping component (15) is provided on the top of the welding table (1). The first flipping component (15) includes: A first motor (151) is fixedly installed on the front of the support plate (10). A transmission rod (152) is fixedly connected to the output shaft of the first motor (151). A first bevel gear (153) is fixedly sleeved on the outside of the transmission rod (152). A threaded rod (154) is threadedly sleeved on the bottom of the sliding frame (12). A second bevel gear (155) is fixedly sleeved on one end of the threaded rod (154). The second bevel gear (155) meshes with the first bevel gear (153). A toothed plate (156) is fixedly connected to the outside of the support frame (2). A drive gear (157) is fixedly sleeved on one end of the rotating shaft (14). The drive gear (157) meshes with the toothed plate (156). A first tilting frame (158) is fixedly connected to the other end of the rotating shaft (14). A second tilting frame (159) is movably sleeved inside the first tilting frame (158).

2. The plasma welding equipment for aluminum rear racks of electric vehicles according to claim 1, characterized in that: A rotating assembly (16) is provided on the side of the first flipping frame (158). The rotating assembly (16) includes a second motor (161). The second motor (161) is fixedly installed on the side of the first flipping frame (158). A first worm gear (162) is fixedly connected to the output shaft of the second motor (161). A first worm wheel (163) is fixedly sleeved on the side of the second flipping frame (159). The first worm wheel (163) is meshed with the first worm gear (162).

3. The plasma welding equipment for aluminum rear coat racks of electric vehicles according to claim 2, characterized in that: An auxiliary mechanism (17) is provided at one end of the rotating shaft (14). The auxiliary mechanism (17) includes a positioning sleeve (171). The positioning sleeve (171) is fixedly connected to the side of the sliding sleeve (13). A guide groove (172) is provided inside the positioning sleeve (171). A conductive ring (173) is fixedly sleeved inside the guide groove (172). A control wire (174) is electrically connected to the input end of the second motor (161). The control wire (174) is fixedly sleeved inside the rotating shaft (14). A spring contact rod (175) is installed at one end of the control wire (174). The spring contact rod (175) is movably sleeved inside the guide groove (172).

4. The plasma welding equipment for aluminum rear coat racks of electric vehicles according to claim 1, characterized in that: The front of the movable frame (5) is provided with a longitudinal adjustment component (18), which includes a No. 3 motor (181). The No. 3 motor (181) is fixedly installed on the front of the movable frame (5). A No. 1 threaded post (182) is fixedly connected to the output shaft of the No. 3 motor (181). The No. 1 threaded post (182) is threadedly sleeved inside the movable platform (6). A limit rod (183) is movably sleeved inside the movable platform (6).

5. The plasma welding equipment for aluminum rear coat racks of electric vehicles according to claim 1, characterized in that: The bottom of the cylinder (7) is provided with a second flip assembly (19), which includes a fourth motor (191). The fourth motor (191) is fixedly installed at the bottom of the cylinder (7). A second worm gear (192) is fixedly connected to the output shaft of the fourth motor (191). A second worm wheel (193) is fixedly sleeved on the outside of the rotating column (8). The second worm wheel (193) meshes with the second worm gear (192).

6. The plasma welding equipment for aluminum rear racks of electric vehicles according to claim 1, characterized in that: The top of the support plate (10) is movably fitted with a sliding ball (20), and there are several sliding balls (20) evenly distributed on the top of the support plate (10).

7. The plasma welding equipment for aluminum rear racks of electric vehicles according to claim 1, characterized in that: A lubrication assembly (21) is provided at the bottom of one side of the support plate (10). The lubrication assembly (21) includes a dust cover (211). The dust cover (211) is fixedly connected to the bottom of one side of the support plate (10). The side of the dust cover (211) is conical. An oil drip nozzle (212) is fixedly sleeved at the bottom of the dust cover (211). The oil drip nozzle (212) is located above the threaded rod (154). There are several oil drip nozzles (212). A baffle plate (213) is fixedly connected to the outside of the support frame (2). The baffle plate (213) is located directly above the toothed plate (156).

8. The plasma welding equipment for aluminum rear racks of electric vehicles according to claim 1, characterized in that: The top of the second flipping frame (159) is provided with a fixing component (22), the fixing component (22) includes a fixing seat (221), the fixing seat (221) is fixedly connected to the top of the second flipping frame (159), the top of the fixing seat (221) is threaded with a second threaded post (222), and the bottom of the second threaded post (222) is movably fitted with a clamping plate (223).

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