A welding equipment for new energy vehicle parts

Abstract

This invention relates to a welding equipment for new energy vehicle components, comprising a support ring, a clamping part, and a drive mechanism. The clamping part is used to clamp the pipe to be welded and is connected to the support ring. The support ring is connected to a robotic arm, which is used to adjust the position and angle of the support ring. A welding head is connected to the support ring in a circular motion around its center line. The output end of the welding head abuts against the joint between two pipes. The drive mechanism is electrically connected to a controller, which controls the drive mechanism to drive the welding head to perform circular motion around the center line of the support ring. Due to the adoption of the above technical solution, when using this new energy vehicle component welding equipment to weld exhaust pipes of new energy vehicles, the operation process is simplified to a certain extent, and the possibility of burns to operators while welding pipes by hand is also reduced to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of welding technology for new energy vehicle parts, and specifically to a welding equipment for new energy vehicle parts. Background Technology

[0002] The welding production of components in new energy vehicle manufacturing is characterized by large batch sizes, high production speeds, and high precision requirements for the assembly and welding of the parts. Due to the different locations and functions of various components, different welding methods are required for different parts. The exhaust pipe of a new energy vehicle is part of the engine's exhaust system, and its main function is to discharge the exhaust gases produced after engine combustion. The exhaust system typically includes components such as the exhaust manifold, exhaust pipe, muffler, and three-way catalytic converter, among which the exhaust pipe is a crucial part connecting the exhaust manifold and the muffler. The design and materials of the automotive exhaust pipe are of great significance for ensuring normal engine operation and reducing environmental pollution. Welding the automotive exhaust pipe is a process of connecting various components of the automotive exhaust system using welding technology. The stainless steel welded pipes used in the exhaust system are manufactured by rolling steel strips into a tubular shape and then welding them. This welding method not only involves connecting the steel strips to form a tubular structure but also includes the treatment of the weld seam to ensure the formability and corrosion resistance of the parts. The quality of the weld seam has a direct impact on the performance and lifespan of the exhaust system.

[0003] Currently, welding of exhaust pipes for new energy vehicles often employs a combination of clamps and welding robotic arms. Since exhaust pipes are composed of multiple sections welded together in a specific arrangement, existing clamps typically consist of two opposing clamps holding the two pipes to be welded. During welding, the clamps simultaneously rotate the pipes to weld the joint. However, because exhaust pipes are irregularly shaped and twisted, welding dead angles can easily occur when welding the two pipes. This may require manual welding by operators, which is cumbersome, and if the pipes are too short, operators are prone to burns. Welding dust and slag generated during welding can easily diffuse into the air, settling on the exhaust pipe surface and affecting the welding effect. Simultaneously, the instantaneous high temperature can cause the molten metal to over-boil, preventing gas from escaping and creating pores, thus affecting the welding quality. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a welding equipment for new energy vehicle parts, so as to solve the problem that in the prior art, due to the irregular twisted pipe of automobile exhaust pipe, dead corners that are difficult to weld are easily generated when welding two pipes to be welded. At this time, manual welding may be required by the operator, which is more troublesome. Moreover, if the pipe is too short, the operator is easily burned during the welding process.

[0005] This invention is achieved through the following technical solution:

[0006] A welding device for new energy vehicle parts includes a three-jaw chuck, a robotic arm, a welding head, and a controller. The three-jaw chuck is used to clamp the outermost end of the exhaust pipe of the new energy vehicle. The robotic arm is connected to the welding head, and both the robotic arm and the welding head are electrically connected to the controller. The controller is used to control the robotic arm to drive the welding head to weld the exhaust pipe of the new energy vehicle. The device also includes a support ring, a clamping part, and a drive mechanism. The clamping part is used to clamp the pipe to be welded and is connected to the support ring. The support ring is connected to the robotic arm, and the robotic arm is used to adjust the position and angle of the support ring. The welding head is connected to the support ring in a circular motion around its center line. The output end of the welding head abuts against the joint between two pipes. The drive mechanism is electrically connected to the controller, and the controller is used to control the drive mechanism to drive the welding head to perform a circular motion around the center line of the support ring.

[0007] The clamping part includes a first internal gear ring, a first gear, a rack, a support block, and a first motor. The first internal gear ring is coaxially arranged with the support ring and is rotatably connected to the support ring. Three racks are arranged around the center line of the first internal gear ring. All three racks can be slidably connected to the support ring in the direction of facing or away from the center line of the support ring. The end of each of the three racks facing the center line of the support ring is connected to the support block. Three first gears are arranged around the center line of the first internal gear ring. The axes of the three first gears are all arranged along the center line of the first internal gear ring. All three first gears can be rotatably connected to the support ring. One end of each of the three first gears meshes with one of the three racks, and the other end of each of the three first gears meshes with the first internal gear ring. The first motor is fixed to the support ring. Any one of the three first gears is connected to the output end of the first motor. The first motor is electrically connected to the controller.

[0008] The abutment block has a recessed groove on the side facing the center line of the support ring. The abutment block also includes a spring, a first electrode, a second electrode, a guide rod, and a thermal resistor. The thermal resistor is connected to the side of the abutment block facing the center line of the support ring. The guide rod is slidably fitted into the groove. The spring is located in the groove, and its two ends are respectively connected to the bottom wall of the groove and the side of the guide rod away from the center line of the support ring. The side of the guide rod near the center line of the support ring protrudes from one end of the groove opening and is connected to the first electrode. The side wall of the groove opening is connected to the second electrode. The contact between the first electrode and the second electrode allows the thermal resistor to be energized and heated.

[0009] Furthermore, the inner sidewall of the support ring is recessed inward to form a sliding groove. The driving mechanism includes a second internal gear ring, a second gear, a sliding part, and a driving part. The second internal gear ring is coaxially arranged with the support ring and is fixedly connected to the support ring. The sliding part is slidably connected to the sliding groove. The second gear is rotatably connected to the sliding part and meshes with the second internal gear ring. The welding head is rotatably connected to the second gear. The driving part is connected to the support ring and electrically connected to a controller. The controller is used to control the driving part to drive the second gear to rotate.

[0010] Furthermore, the sliding part includes a sliding ring, which is slidably fitted at the opening end of the groove. The side wall of the sliding ring is provided with multiple air inlets, and it also includes a suction device, which is connected to any one of the multiple air inlets.

[0011] Furthermore, the suction device includes a housing, a fan wheel, a duct, and a filter screen. The drive unit includes a second motor and a reducer. The housing is rotatably connected to the second gear. The fan wheel is located inside the housing. The output shaft of the second motor passes through the housing and connects to one end of the rotating shaft of the fan wheel. The other end of the rotating shaft of the fan wheel is connected to the input end of the reducer. The output end of the reducer is connected to the second gear. The two ends of the duct are respectively connected to the housing and any one of the multiple air inlets. Any one of the multiple air inlets is connected to the filter screen.

[0012] Furthermore, a scraper is connected to one side of the sliding ring facing the chute, and the scraper matches the cross-section of the chute; a dust collection box is connected to the lower part of the support ring, and a through hole is provided at the position corresponding to the dust collection box in the chute, the through hole connecting the chute and the interior of the dust collection box.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. When using the new energy vehicle component welding equipment of the present invention to weld the exhaust pipe of a new energy vehicle, pipes with different torsion angles can be clamped and welded. When encountering dead corners that are difficult to weld, the possibility of hand-held positioning welding is reduced, which saves the operation process to a certain extent and also reduces the possibility of operators being burned when hand-held welding pipes.

[0015] 2. The rotation of the welding head and the rotation of the fan are linked during the welding process, so that the suction device can better match the welding head's rotation speed around the pipe for welding: when the welding speed increases, the suction device can increase its speed accordingly, which can enhance the effective blowing of dust and welding slag to a certain extent; when the welding speed decreases, the suction device can decrease its speed accordingly, which can reduce the possibility of rapid oxidation of the surface at the welding position due to high wind speed at a slow welding speed.

[0016] 3. Preheating the pipe before welding it with the welding head reduces the possibility of porosity caused by instantaneous overheating of the molten metal, thus ensuring welding quality to a certain extent.

[0017] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A magnified view of part A in the image;

[0020] Figure 3 This is a cross-sectional view of the structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 A magnified view of part B in the image;

[0022] Figure 5 For the present invention Figure 3 A magnified view of part C;

[0023] Figure 6 This is a cross-sectional view of the supporting block of the present invention.

[0024] In the diagram: 1. Three-jaw chuck; 2. Robotic arm; 3. Welding head; 4. Pipe; 5. Support ring; 51. Slide groove; 6. Clamping part; 61. First internal gear ring; 62. First gear; 63. Rack; 64. Support block; 65. First motor; 66. Spring; 671. First pole piece; 672. Second pole piece; 68. Guide rod; 69. Resistance temperature detector (RTD); 7. Drive mechanism; 71. Second internal gear ring; 72. Second gear; 73. Sliding ring; 731. Air inlet; 732. Scraper; 733. Dust collection box; 734. Through hole; 741. Second motor; 742. Reducer; 75. Suction device; 751. Housing; 752. Impeller; 753. Air duct; 754. Filter screen; Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] Please see Figure 1-5 This invention provides a technical solution for welding equipment for new energy vehicle components: a welding equipment for new energy vehicle components, including a three-jaw chuck 1, a robotic arm 2, a welding head 3, and a controller. The three-jaw chuck 1 is used to clamp the outermost end pipe 4 of the exhaust pipe of the new energy vehicle. The robotic arm 2 is connected to the welding head 3. Both the robotic arm 2 and the welding head 3 are electrically connected to the controller. The controller is used to control the robotic arm 2 to drive the welding head 3 to weld the exhaust pipe 4 of the new energy vehicle. It also includes a support ring 5, a clamping part 6, and a driving mechanism 7. The clamping part 6 is used to clamp the pipe 4 to be welded. The clamping part 6 is connected to the support ring 5. The support ring 5 is connected to the robotic arm 2. The robotic arm 2 is used to adjust the position and angle of the support ring 5. The welding head 3 is connected to the support ring 5 in a circular motion around the center line of the support ring 5. The output end of the welding head 3 abuts against the joint between two pipes 4. The driving mechanism 7 is electrically connected to the controller. The controller is used to control the driving mechanism 7 to drive the welding head 3 to perform a circular motion around the center line of the support ring 5.

[0027] When welding exhaust pipes using the new energy vehicle component welding equipment of the present invention, the outermost end of the exhaust pipe 4 is first connected to the three-jaw chuck 1. Then, the pipe 4 to be welded is passed through the support ring 5 and clamped by the clamping part 6. The controller controls the robotic arm 2 to move the support ring 5 holding the pipe 4 to be welded, so that one end of the vehicle exhaust pipe 4 on the support ring 5 is directly opposite to one end of the vehicle exhaust pipe 4 on the three-jaw chuck 1. The controller controls the welding head 3 to move towards the pipe 4 so that the output end of the welding head 3 abuts against the joint between the two pipes 4. Then, the controller controls the drive mechanism 7 to drive the welding head 3 to make a circular motion around the center line of the support ring 5 while controlling the welding head 3 to weld the joint position.

[0028] With this structure, when using the welding equipment for new energy vehicle parts of the present invention to weld the exhaust pipe of a new energy vehicle, pipes 4 with different torsion angles can be clamped and welded. When encountering dead corners that are difficult to weld, the possibility of hand-held positioning welding is reduced, which saves the operation process to a certain extent and also reduces the possibility of operators being burned when hand-held welding pipes 4.

[0029] In this embodiment: the clamping part 6 includes a first internal gear ring 61, a first gear 62, a rack 63, a retaining block 64, and a first motor 65. The first internal gear ring 61 is coaxially arranged with the support ring 5 and is rotatably connected to the support ring 5. Three racks 63 are arranged around the center line of the first internal gear ring 61. All three racks 63 can be slidably connected to the support ring 5, either towards or away from the center line of the support ring 5. The end of each of the three racks 63 facing the center line of the support ring 5 is connected to the retaining block 64. The first gear 62 is arranged around the center line of the first internal gear ring 61. The first internal gear ring 61 has three centerline arrays. The axes of the three first gears 62 are all arranged along the centerline direction of the first internal gear ring 61. The three first gears 62 can be rotatably connected to the support ring 5. One end of the three first gears 62 meshes with the three racks 63 respectively, and the other end of the three first gears 62 meshes with the first internal gear ring 61. The first motor 65 is fixed to the support ring 5. Any one of the three first gears 62 is connected to the output end of the first motor 65. The first motor 65 is electrically connected to the controller.

[0030] When it is necessary to clamp the pipe 4, the controller controls the first motor 65 to start. The rotation of the first motor 65 drives any one of the three first gears 62 to rotate. Since the other ends of the three first gears 62 are engaged with the first internal gear ring 61, the rotation of any one of the first gears 62 can drive the first internal gear ring 61 to rotate, thereby driving the other two first gears 62 to rotate simultaneously. Since one end of each of the three first gears 62 is engaged with one of the three racks 63, the three racks 63 can be slidably connected to the support ring 5 towards or away from the center line of the support ring 5. The rotation of the first gear 62 can drive the racks 63 to slide towards the center line of the support ring 5, thereby bringing the three abutment blocks 64 closer to each other until all three abutment blocks 64 abut against the outer wall of the pipe 4. At this point, the controller controls the first motor 65 to stop rotating, and the clamping part 6 clamps the pipe 4.

[0031] After the welding of pipe 4 is completed, the controller controls the first motor 65 to rotate, which drives the first gear 62 to reverse, so that the first gear 62 drives the rack 63 to slide in a direction away from the center line of the support ring 5, thereby causing the three abutment blocks 64 to move away from each other, thereby releasing the clamping of pipe 4.

[0032] In this embodiment: the supporting block 64 is recessed inward on the side facing the center line of the support ring to form a groove. The supporting block 64 also includes a spring 66, a first electrode 671, a second electrode 672, a guide rod 68, and a thermal resistor 69. The thermal resistor 69 is connected to the side of the supporting block 64 facing the center line of the support ring. The guide rod 68 is slidably fitted in the groove. The spring 66 is disposed in the groove. The two ends of the spring 66 are respectively connected to the bottom wall of the groove and the side of the guide rod 68 away from the center line of the support ring. The side of the guide rod 68 near the center line of the support ring protrudes from one end of the groove opening and is connected to the first electrode 671. The side wall of one end of the groove opening is connected to the second electrode 672. The contact between the first electrode 671 and the second electrode 672 can cause the thermal resistor 69 to be energized and heated.

[0033] When the controller controls the abutment block 64 to move toward the pipe sidewall, it drives the guide rod 68 to move toward the pipe sidewall until the end of the guide rod 68 facing the center of the support ring abuts against the pipe sidewall. Since the guide rod 68 is slidably fitted into the groove, and the spring 66 is located within the groove, with its two ends connected to the bottom wall of the groove and the side of the guide rod 68 away from the center line of the support ring, the pipe sidewall abuts against the guide rod 68 and moves away from the center line of the support ring until the end of the guide rod 68 facing the center line of the support ring reaches the opening of the groove. Because the guide rod 68 is close to the center of the support ring... One side of the center line protrudes from one end of the groove opening and is connected to a first electrode 671. A second electrode 672 is connected to the side wall of one end of the groove opening. When the first electrode 671 and the second electrode 672 are in contact, the thermal resistance element 69 can be energized and heated. At this time, when the first electrode 671 and the second electrode 672 are connected, the thermal resistance element 69 can be heated and the controller can control the first motor 65 to stop running, thereby preheating the pipeline. With this structure, the possibility of the molten pool metal boiling excessively due to instantaneous high temperature, causing gas to not have time to escape and forming pores, is reduced to a certain extent, thus ensuring the welding quality.

[0034] A pressure sensor is connected to the side of the abutment block 64 facing the center line of the support ring 5. The pressure sensor is electrically connected to the controller. When the abutment block 64 abuts against the side wall of the pipe 4, thereby putting pressure on the pressure sensor, the pressure sensor sends an electrical signal to the controller, thereby causing the controller to control the first motor 65 to stop rotating.

[0035] In this embodiment: the inner sidewall of the support ring 5 is recessed to form a groove 51. The driving mechanism 7 includes a second internal gear ring 71, a second gear 72, a sliding part, and a driving part. The second internal gear ring 71 is coaxially arranged with the support ring 5 and is fixedly connected to the support ring 5. The sliding part is slidably connected to the groove 51. The second gear 72 is rotatably connected to the sliding part and meshes with the second internal gear ring 71. The welding head 3 is rotatably connected to the second gear 72. The driving part is connected to the support ring 5 and is electrically connected to the controller. The controller is used to control the driving part to drive the second gear 72 to rotate.

[0036] After the clamping part 6 clamps the pipe 4, the controller starts to control the drive part to drive the second gear 72 to rotate. As a result, the second gear 72 meshes with the second internal gear ring 71. While rotating, the second gear 72 makes a circular motion around the second internal gear ring 71. Since the welding head 3 is rotatably connected to the second gear 72 and the welding head 3 is electrically connected to the controller, the controller controls the welding head 3 to rotate when the second gear 72 makes a circular motion around the second internal gear ring 71, so that the output end of the welding head 3 always faces the joint of the two pipes 4 to be welded and performs welding.

[0037] In this embodiment: the sliding part includes a sliding ring 73, which is slidably fitted at the opening end of the sliding groove 51. The side wall of the sliding ring 73 is provided with a plurality of air inlets 731. It also includes a suction device 75, which is connected to any one of the plurality of air inlets 731.

[0038] When the welding equipment for new energy vehicle parts of the present invention welds the exhaust pipe of a new energy vehicle, the suction device 75 operates to draw the welding dust and slag generated during welding into the chute 51 through the air inlet 731. This structure can reduce the possibility of welding dust generated during welding spreading in the air, and to a certain extent reduce the possibility of welding dust contaminating the welding pipe 4 and thus affecting the welding quality.

[0039] In this embodiment: the suction device 75 includes a housing 751, a fan wheel 752, a duct 753, and a filter screen 754. The drive unit includes a second motor 741 and a reducer 742. The housing 751 is rotatably connected to the second gear 72. The fan wheel 752 is disposed inside the housing 751. The output shaft of the second motor 741 passes through the housing 751 and connects to one end of the rotating shaft of the fan wheel 752. The other end of the rotating shaft of the fan wheel 752 is connected to the input end of the reducer 742. The output end of the reducer 742 is connected to the second gear 72. The two ends of the duct 753 are respectively connected to the housing 751 and any one of the plurality of air inlets 731. Any one of the plurality of air inlets 731 is connected to the filter screen 754.

[0040] When the controller starts the second motor 741, the output shaft of the second motor 741 passes through the housing 751 and connects to one end of the rotating shaft of the impeller 752. The two ends of the air duct 753 are respectively connected to the housing 751 and any one of the multiple air inlets 731. The rotation of the second motor 741 drives the impeller 752 to rotate, thereby enabling the suction device 75 to absorb welding dust and slag. Since the other end of the rotating shaft of the impeller 752 is connected to the input end of the reducer 742, and the output end of the reducer 742 is connected to the second gear 72, the rotation of the impeller 752 can drive the second gear 72 to rotate at a low speed. With this structure, the controller can drive the suction device 75 to operate while controlling the drive unit to drive the second gear 72 to rotate, so that welding dust and slag can be absorbed during welding.

[0041] In this embodiment: a scraper 732 is connected to one side of the sliding ring 73 facing the slide groove 51, and the scraper 732 matches the cross section of the slide groove 51; a dust collection box 733 is connected to the lower part of the support ring 5, and a through hole 734 is provided at the position corresponding to the dust collection box 733 in the slide groove 51, and the through hole 734 connects the slide groove 51 and the interior of the dust collection box 733.

[0042] When the sliding ring 73 rotates, it drives the scraper 732 to slide in the groove 51. Since the scraper 732 is matched with the cross section of the groove 51, the scraper 732 can scrape off the welding dust and slag on the wall of the groove 51 and drive it to rotate in the groove 51. When the welding dust and slag rotate to the position of the through hole 734, they can fall into the dust collection box 733, which reduces the possibility of welding dust and slag accumulation in the groove 51 to a certain extent.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A welding equipment for new energy vehicle components, comprising a three-jaw chuck, a robotic arm, a welding head, and a controller, wherein the three-jaw chuck is used to clamp the outermost end of a new energy vehicle exhaust pipe, the robotic arm is connected to the welding head, and both the robotic arm and the welding head are electrically connected to the controller, the controller being used to control the robotic arm to drive the welding head to weld the new energy vehicle exhaust pipe, characterized in that: It also includes a support ring, a clamping part, and a drive mechanism. The clamping part is used to clamp the pipe to be welded. The clamping part is connected to the support ring. The support ring is connected to the robotic arm. The robotic arm is used to adjust the position and angle of the support ring. The welding head is connected to the support ring in a circular motion around the center line of the support ring. The output end of the welding head abuts against the joint between the two pipes. The drive mechanism is electrically connected to the controller. The controller is used to control the drive mechanism to drive the welding head to make a circular motion around the center line of the support ring. The clamping part includes a first internal gear ring, a first gear, a rack, a support block, and a first motor. The first internal gear ring is coaxially arranged with the support ring and is rotatably connected to the support ring. Three racks are arranged around the center line of the first internal gear ring. All three racks can be slidably connected to the support ring in the direction of facing or away from the center line of the support ring. The end of each of the three racks facing the center line of the support ring is connected to the support block. Three first gears are arranged around the center line of the first internal gear ring. The axes of the three first gears are all arranged along the center line of the first internal gear ring. All three first gears can be rotatably connected to the support ring. One end of each of the three first gears meshes with one of the three racks, and the other end of each of the three first gears meshes with the first internal gear ring. The first motor is fixed to the support ring. Any one of the three first gears is connected to the output end of the first motor. The first motor is electrically connected to the controller. The abutment block has a recessed groove on the side facing the center line of the support ring. The abutment block also includes a spring, a first electrode, a second electrode, a guide rod, and a thermal resistor. The thermal resistor is connected to the side of the abutment block facing the center line of the support ring. The guide rod is slidably fitted into the groove. The spring is located in the groove, and its two ends are respectively connected to the bottom wall of the groove and the side of the guide rod away from the center line of the support ring. The side of the guide rod near the center line of the support ring protrudes from one end of the groove opening and is connected to the first electrode. The side wall of the groove opening is connected to the second electrode. The contact between the first electrode and the second electrode allows the thermal resistor to be energized and heated.

2. The welding equipment for new energy vehicle parts according to claim 1, characterized in that: The inner sidewall of the support ring is recessed inward to form a sliding groove. The driving mechanism includes a second internal gear ring, a second gear, a sliding part, and a driving part. The second internal gear ring is coaxially arranged with the support ring and is fixedly connected to the support ring. The sliding part is slidably connected to the sliding groove. The second gear is rotatably connected to the sliding part and meshes with the second internal gear ring. The welding head is rotatably connected to the second gear. The driving part is connected to the support ring and is electrically connected to a controller. The controller is used to control the driving part to drive the second gear to rotate.

3. The welding equipment for new energy vehicle parts according to claim 2, characterized in that: The sliding part includes a sliding ring, which is slidably fitted at the opening end of the groove. The side wall of the sliding ring is provided with multiple air inlets. It also includes a suction device, which is connected to any one of the multiple air inlets.

4. The welding equipment for new energy vehicle parts according to claim 3, characterized in that: The suction device includes a housing, a fan wheel, a duct, and a filter. The drive unit includes a second motor and a reducer. The housing is rotatably connected to the second gear. The fan wheel is located inside the housing. The output shaft of the second motor passes through the housing and connects to one end of the rotating shaft of the fan wheel. The other end of the rotating shaft of the fan wheel is connected to the input end of the reducer. The output end of the reducer is connected to the second gear. The two ends of the duct are respectively connected to the housing and any one of the multiple air inlets. Any one of the multiple air inlets is connected to the filter.

5. The welding equipment for new energy vehicle parts according to claim 4, characterized in that: A scraper is connected to one side of the sliding ring facing the chute, and the scraper matches the cross section of the chute; a dust collection box is connected to the lower part of the support ring, and a through hole is provided at the position of the chute corresponding to the dust collection box, and the through hole connects the chute and the interior of the dust collection box.

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