Welding device for manufacturing and machining high-precision automobile exhaust pipe

Abstract

The invention discloses a high-precision welding device for automobile exhaust pipe manufacturing and machining, and relates to the technical field of welding devices.The high-precision welding device comprises a bottom supporting seat and a welding machine body, a convenient welding mechanism is arranged at the top of the bottom supporting seat, and a scrap treatment mechanism is arranged on the outer wall of the bottom supporting seat; the convenient welding mechanism comprises an exhaust pipe clamping unit and a welding height adjusting unit, the scrap treatment mechanism comprises a scrap concentration unit and a gas purification unit, and the gas purification unit comprises a purification barrel. Through the design of the barrel-shaped suction fan, air can be absorbed from the round through hole and the frame-shaped groove, then harmful smoke generated in the welding process is absorbed, the air flows through the inner cavity of the purification barrel, through the design of the submersible pump, circulating water mist can be generated in the inner cavity of the purification barrel, and therefore the welding quality is improved. Therefore, the water mist carries out dust falling and purifying treatment on harmful air, and the safety of the air environment nearby the device is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to a welding device for manufacturing and processing high-precision automobile exhaust pipes. Background Art

[0002] Automobile exhaust bellows is also called automobile exhaust pipe hose. It is installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, making the entire exhaust system flexibly connected, thereby reducing vibration and noise, facilitating installation and extending the life of the exhaust muffler system. It is mainly used for light vehicles, micro vehicles and buses. Its structure is a double-layer bellows covered with a steel wire mesh sleeve, and the straight edge sections at both ends are covered with a clamping ring. In order to achieve a better muffler effect, the bellows can be equipped with a telescopic joint or a mesh sleeve. High-precision automobile exhaust pipes need to be welded during production. A Chinese patent discloses a pipe welding device for motorcycle exhaust pipes, with a publication number of CN217727607U. The technical solution disclosed in the patent document is as follows: it includes a base, the top of the base is fixedly connected to a support frame, the top of the support frame is fixedly connected to a support seat, the top of the support seat is fixedly connected to a hydraulic pump, the outlet of the hydraulic pump is movably connected to a hydraulic rod, and the bottom of the hydraulic rod is fixedly connected to a welding head.

[0003] In order to solve the problem that the existing welding device is inconvenient to clamp and position the pipeline, the existing technology adopts a method of setting components such as a base, a support frame, a support seat, a hydraulic pump, a return spring, a fixed rod and a movable block to facilitate the clamping and positioning of the pipeline. However, there is still a situation where the smoke cannot be purified. A large amount of harmful smoke will be generated during the welding process. The harmful smoke will flow near the device, thereby causing the air environment near the device to be seriously damaged. Summary of the invention

[0004] The present invention provides a welding device for manufacturing and processing a high-precision automobile exhaust pipe to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A welding device for manufacturing and processing high-precision automobile exhaust pipes comprises a bottom support seat and a welding machine body. A convenient welding mechanism is arranged on the top of the bottom support seat, and a debris processing mechanism is arranged on the outer wall of the bottom support seat.

[0007] The convenient welding mechanism includes an exhaust pipe clamping unit and a welding height adjustment unit, and the debris processing mechanism includes a debris concentration unit and a gas purification unit.

[0008] The gas purification unit includes a purification cylinder, a stainless steel diversion mesh plate is fixedly installed between the top and the bottom of the inner wall of the purification cylinder, a submersible pump is fixedly installed at the bottom of the inner wall of the purification cylinder, the output pipe of the submersible pump is fixedly connected to a three-way square tube, the three-way square tube is fixedly installed on the top of the inner wall of the purification cylinder, both sides of the three-way square tube are fixedly connected to hollow plates, the bottom of the hollow plate is fixedly connected to an atomizing nozzle, the top of the purification cylinder is movably plugged with a plug-in pipe fitting, and the top of the plug-in pipe fitting is fixedly connected to the purification square tube. Through the design of the submersible pump, the hollow plate and the atomizing nozzle, water mist can be formed in the inner cavity of the purification cylinder for primary filtration of smoke.

[0009] A further improvement of the technical solution of the present invention is that: a bottom partition No. 1 is fixedly installed on the inner wall of the purification square tube, a bottom partition No. 2 located on the top of the bottom partition No. 1 is fixedly installed on the inner wall of the purification square tube, and non-woven filter plates are fixedly installed on the inner walls of the bottom partition No. 1 and the bottom partition No. 2. The problem of anthracite falling is avoided by the design of the bottom partition No. 1, the bottom partition No. 2 and the non-woven filter plate.

[0010] A further improvement of the technical solution of the present invention is that a drainage solid plate is welded on the inner wall of the No. 1 bottom partition, three of the drainage solid plates overlap in the vertical direction, and the other two drainage solid plates overlap in another vertical direction, and the inner cavity of the purification square tube is filled with anthracite located on the top of the No. 2 bottom partition, and the anthracite is used for secondary filtration of the smoke.

[0011] A further improvement of the technical solution of the present invention is that the debris concentration unit includes a hollow frame, which is fixedly mounted on the outer wall on the inner side of the bottom support seat, an inclined inner plate is fixedly mounted on the inner wall of the hollow frame, a top support plate is fixedly mounted on the top of the hollow frame, a circular through hole is provided on the top of the top support plate, and a frame-shaped groove is provided on the top of the top support plate. The design of the frame-shaped groove and the circular through hole facilitates the suction and blanking operations.

[0012] A further improvement of the technical solution of the present invention is that the purification cylinder is fixedly installed on the back of the hollow frame, the filter cylinder is fixedly connected to the back of the hollow frame, the filter cylinder is fixedly connected to the back of the filter cylinder, the air outlet end of the cylindrical suction fan is fixedly connected to an air transfer pipe, the end of the air transfer pipe away from the cylindrical suction fan is movably plugged into the top of the purification cylinder, the cylindrical suction fan is used to provide suction, and the air transfer pipe is used to transfer the gas out.

[0013] A further improvement of the technical solution of the present invention is that a sealing cover plate is movably inserted at the top of the filter cylinder, a movable inner frame is fixedly installed at the bottom of the sealing cover plate, a guide strip is welded at the bottom of the inner wall of the movable inner frame, a stainless steel filter is fixedly installed on the inner wall of the movable inner frame at the front, and a nylon fiber filter is fixedly installed on the inner wall of the movable inner frame at the back; by the cooperation of the stainless steel filter and the nylon fiber filter, debris and impurities inside the air can be filtered out.

[0014] A further improvement of the technical solution of the present invention is that the exhaust pipe clamping unit includes a right-angle turn support arm and a mounting foot, the right-angle turn support arm is fixedly mounted on the top of the bottom support seat, a horizontal support plate is fixedly mounted on one end of the right-angle turn support arm away from the bottom support seat, a synchronous cylinder body is fixedly mounted on the top of the horizontal support plate, the moving end of the synchronous cylinder body extends to the bottom of the horizontal support plate and is fixedly connected to a sliding plate, the synchronous cylinder body can control the lifting and lowering of the sliding plate to complete the clamping and positioning processing of the pipe fitting.

[0015] A further improvement of the technical solution of the present invention is that a rubber clamping plate is fixedly connected to the bottom of the sliding plate, the mounting foot is detachably connected to the top of the bottom support seat, and a fitting ring seat is fixedly installed on the top of the mounting foot. Through the design of the mounting foot, the user can disassemble and replace the fitting ring seat, and then through the design of the rubber clamping plate, it can be suitable for pipes of different specifications.

[0016] A further improvement of the technical solution of the present invention is that the welding height adjustment unit includes an extended strip, which is welded to the outer wall on the inner side of the horizontal support plate, and a center seat is fixedly connected to the middle of the extended strip, and a smooth rod is welded to the top of the center seat, and a lifting round seat is slidably connected to the outer wall of the smooth rod, and the stability of the lifting and lowering of the welding machine body is improved through the cooperation of the smooth rod and the lifting round seat.

[0017] A further improvement of the technical solution of the present invention is that an electric telescopic cylinder is fixedly installed on the top of the middle seat, a transmission block is fixedly installed on the movable end of the electric telescopic cylinder, the transmission block is welded to the outer wall of the lifting round seat, and the welding machine body is detachably connected to the bottom of the lifting round seat. Through the cooperation of the electric telescopic cylinder and the transmission block, the welding machine body can be driven to rise and fall and adjust the welding height.

[0018] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0019] 1. The present invention provides a welding device for manufacturing and processing high-precision automobile exhaust pipes. Through the design of a cylindrical suction fan, air can be absorbed from the circular through hole and the frame-shaped groove, thereby absorbing the harmful smoke generated during the welding process, and the above air can flow through the inner cavity of the purification cylinder. Through the design of a submersible pump, circulating water mist can be generated in the inner cavity of the purification cylinder, and the water mist can perform dust reduction and purification on the harmful air, thereby ensuring the safety of the air environment near the device.

[0020] 2. The present invention provides a welding device for manufacturing and processing high-precision automobile exhaust pipes. Through the design of a synchronous cylinder body, the sliding plate can be driven to move downward, and the rubber clamping plate can be driven to move downward synchronously, so as to achieve the function of clamping and fixing the exhaust pipe, which is convenient for users to use. Moreover, through the design of the mounting feet, users can replace the matching ring seats of different specifications to suit exhaust pipes of different specifications.

[0021] 3. The present invention provides a welding device for manufacturing and processing high-precision automobile exhaust pipes. Through the design of circular through holes and frame-shaped grooves, users can clean welding debris into the inner cavity of the hollow frame, and then through the guidance of the inclined inner plate, the debris can be concentrated into the inner cavity of the filter cylinder. Moreover, through the design of stainless steel filter screens and nylon fiber filter screens, the debris can be fully filtered out in the movable inner frame, which is convenient for users to centrally process the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a right-angle turning support arm of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the middle seat of the present invention;

[0025] Figure 4 It is a schematic diagram of the separation structure of the hollow frame and the top support plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the cutaway structure of the filter cylinder of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the purification cartridge of the present invention;

[0028] Figure 7 It is a schematic diagram of the cutaway structure of the purification square tube of the present invention.

[0029] In the figure: 1. bottom support; 11. welding machine body;

[0030] 2. Convenient welding mechanism; 21. Right-angle turning support arm; 22. Horizontal support plate; 23. Synchronous cylinder body; 24. Sliding plate; 25. Rubber clamping plate; 26. Mounting foot; 27. Fitting ring seat; 28. Extended strip; 29. ​​Middle seat; 291. Smooth rod; 292. Lifting round seat; 293. Electric telescopic cylinder; 294. Transmission block;

[0031] 3. Debris handling mechanism; 31. Hollow frame; 32. Inclined inner plate; 33. Top support plate; 34. Circular through hole; 35. Frame-shaped groove; 36. Filter cylinder; 361. Sealing cover plate; 362. Movable inner frame; 363. Guide strip; 364. Stainless steel filter screen; 365. Nylon fiber filter screen; 37. Cylinder-type suction fan; 38. Air transfer pipe; 39. Purification cylinder; 391. Stainless steel diversion mesh plate; 392. Submersible pump; 393. Three-way square tube; 394. Hollow plate; 395. Atomizing nozzle; 396. Plug-in pipe fittings; 397. Purification square tube; 3971. Bottom baffle No. 1; 3972. Bottom baffle No. 2; 3973. Non-woven filter plate; 3974. Drainage solid plate. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with embodiments:

[0033] Example 1

[0034] like Figure 1-7 As shown, the present invention provides a welding device for manufacturing and processing high-precision automobile exhaust pipes, including a bottom support seat 1 and a welding machine body 11, a convenient welding mechanism 2 is arranged on the top of the bottom support seat 1, a debris handling mechanism 3 is arranged on the outer wall of the bottom support seat 1, the convenient welding mechanism 2 includes an exhaust pipe clamping unit and a welding height adjustment unit, the debris handling mechanism 3 includes a debris concentration unit and a gas purification unit, the gas purification unit includes a purification cylinder 39, a stainless steel diversion mesh plate 391 is fixedly installed between the top and the bottom of the inner wall of the purification cylinder 39, a submersible pump 392 is fixedly installed at the bottom of the inner wall of the purification cylinder 39, the output pipe of the submersible pump 392 is fixedly connected with a three-way square pipe 393, and the three-way square pipe 393 is fixedly installed in the purification cylinder 39 At the top of the wall, both sides of the three-way square tube 393 are fixedly connected with a hollow plate 394, the bottom of the hollow plate 394 is fixedly connected with an atomizing nozzle 395, the top of the purification cylinder 39 is movably connected with a plug-in pipe fitting 396, and the top of the plug-in pipe fitting 396 is fixedly connected with a purification square tube 397. Water is added to the inner cavity of the purification cylinder 39 in advance, and the submersible pump 392 is controlled to work. The water at the bottom of the inner cavity of the purification cylinder 39 can be extracted and transported to the inner cavity of the hollow plate 394 through the three-way square tube 393, and then sprayed out from the atomizing nozzle 395 to generate water mist in the inner cavity of the purification cylinder 39. The water mist can perform initial purification treatment on the smoke, and the stainless steel diversion mesh plate 391 can evenly flow the air to improve the contact effect between the water mist and the smoke.

[0035] Example 2

[0036] like Figure 1-7 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, a bottom baffle plate No. 1 3971 is fixedly installed on the inner wall of the purification square tube 397, a bottom baffle plate No. 2 3972 located on the top of the bottom baffle plate No. 1 3971 is fixedly installed on the inner wall of the purification square tube 397, non-woven filter plates 3973 are fixedly installed on the inner walls of the bottom baffle plates No. 1 3971 and the bottom baffle plates No. 2 3972, and a drainage solid plate 3974 is welded on the inner wall of the bottom baffle plate No. 1 3971, wherein three drainage solid plates 3974 overlap in the vertical direction, and the other two drainage solid plates 3974 overlap in the other direction. Overlapping in the vertical direction, the inner cavity of the purification square tube 397 is filled with anthracite located on the top of the No. 2 bottom partition 3972. The design of the plug-in fitting 396 allows users to disassemble and maintain the purification square tube 397. The anthracite in the purification square tube 397 can be used to perform secondary absorption and purification on the smoke. The position distribution setting of the drainage solid plate 3974 can enhance the purification effect of the smoke by the anthracite. The design of the No. 1 bottom partition 3971, the No. 2 bottom partition 3972 and the non-woven filter plate 3973 facilitates the passage of air while preventing the anthracite from falling into the purification cylinder 39.

[0037] Example 3

[0038] like Figure 1-7As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the debris concentration unit includes a hollow frame 31, the hollow frame 31 is fixedly mounted on the outer wall inside the bottom support seat 1, an inclined inner plate 32 is fixedly mounted on the inner wall of the hollow frame 31, a top support plate 33 is fixedly mounted on the top of the hollow frame 31, a circular through hole 34 is provided on the top of the top support plate 33, a frame-shaped groove 35 is provided on the top of the top support plate 33, a purification cylinder 39 is fixedly mounted on the back of the hollow frame 31, a filter cylinder 36 is fixedly connected to the back of the hollow frame 31, a cylindrical suction fan 37 is fixedly connected to the back of the filter cylinder 36, an air transfer pipe 38 is fixedly connected to the air outlet end of the cylindrical suction fan 37, an end of the air transfer pipe 38 away from the cylindrical suction fan 37 is movably plugged into the top of the purification cylinder 39, and a sealing cover plate 361 is movably plugged into the top of the filter cylinder 36 A movable inner frame 362 is fixedly installed at the bottom of the sealing cover plate 361, and a guide strip 363 is welded to the bottom of the inner wall of the movable inner frame 362. A stainless steel filter screen 364 is fixedly installed on the inner wall of the movable inner frame 362 located at the front, and a nylon fiber filter screen 365 is fixedly installed on the inner wall of the movable inner frame 362 located at the back. Through the design of the circular through hole 34 and the frame-shaped groove 35, the user can clean the welding debris into the inner cavity of the hollow frame body 31, and then through the guidance of the inclined inner plate 32, the debris can be concentrated into the inner cavity of the filter cylinder 36. When the cylindrical suction fan 37 is running, the stainless steel filter screen 364 and the nylon fiber filter screen 365 can be designed to fully filter the debris in the movable inner frame 362, which is convenient for the user to centrally process the debris. The design of the sealing cover plate 361 makes it convenient for the user to disassemble and clean the movable inner frame 362.

[0039] Example 4

[0040] like Figure 1-7As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the exhaust pipe clamping unit includes a right-angle turn support arm 21 and a mounting foot 26, the right-angle turn support arm 21 is fixedly installed on the top of the bottom support seat 1, and a horizontal support plate 22 is fixedly installed on the end of the right-angle turn support arm 21 away from the bottom support seat 1, and a synchronous cylinder body 23 is fixedly installed on the top of the horizontal support plate 22, and the moving end of the synchronous cylinder body 23 extends to the bottom of the horizontal support plate 22 and is fixedly connected with a sliding plate 24, and the bottom of the sliding plate 24 is fixedly connected with a rubber clamping plate 25, and the mounting foot 26 is detachably connected to the top of the bottom support seat 1, and a fitting ring seat 27 is fixedly installed on the top of the mounting foot 26, and the welding height adjustment unit includes an extended strip 28, and the extended strip 28 is welded to the outer wall on the inner side of the horizontal support plate 22, and the middle of the extended strip 28 is fixedly connected with a center seat 29, and the top of the center seat 29 is welded with a smooth rod 29 1. A lifting round seat 292 is slidably connected to the outer wall of the smooth rod 291, an electric telescopic cylinder 293 is fixedly installed on the top of the middle seat 29, and a transmission block 294 is fixedly installed on the moving end of the electric telescopic cylinder 293. The transmission block 294 is welded on the outer wall of the lifting round seat 292, and the welding machine body 11 is detachably connected to the bottom of the lifting round seat 292. The synchronous cylinder body 23 is controlled to drive the sliding plate 24 to move downward, and the rubber clamping plate 25 is synchronously driven to move downward, so as to realize the function of clamping and fixing the exhaust pipe, which is convenient for users to use. Through the design of the mounting foot 26, the user can replace the matching ring seat 27 of different specifications, and the rubber clamping plate 25 can produce elastic deformation to adapt to exhaust pipes of different specifications, and the electric telescopic cylinder 293 is controlled to work. Through the design of the transmission block 294, the lifting round seat 292 can be driven to slide on the outer wall of the smooth rod 291, thereby adjusting the height of the welding machine body 11.

[0041] The following is a detailed description of the working principle of the welding device for the production and processing of high-precision automobile exhaust pipes.

[0042] like Figure 1-7 As shown, first, the exhaust pipe is movably connected to the inner wall of the fitting ring seat 27, and the movably docked end of the pipe is completed at the bottom of the welding machine body 11, and the synchronous cylinder body 23 is controlled to extend to complete the fixing of the pipe, and then the electric telescopic cylinder 293 is controlled to contract to drive the welding machine body 11 to move downward. Through the operation of the welding machine body 11, the welding of the pipe is realized. During the welding process, the user can control the synchronous cylinder body 23 to reset, and then rotate the pipe to adjust the welding position. While welding, the cylindrical suction fan 37 is controlled to work to absorb the smoke generated by welding, water is added to the inner cavity of the purification cylinder 39 in advance, and then the submersible pump 392 is controlled to work to generate water mist in the inner cavity of the purification cylinder 39, and the smoke is initially purified by the water mist, and then the smoke is secondarily absorbed and purified by the anthracite in the purification square tube 397.

[0043] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A welding device for manufacturing and processing high-precision automobile exhaust pipes, comprising a base support (1) and a welding machine body (11), characterized in that: A convenient welding mechanism (2) is provided on the top of the bottom support seat (1), and a debris processing mechanism (3) is provided on the outer wall of the bottom support seat (1); The convenient welding mechanism (2) comprises an exhaust pipe clamping unit and a welding height adjustment unit, and the debris processing mechanism (3) comprises a debris collection unit and a gas purification unit; The gas purification unit comprises a purification cylinder (39), a stainless steel flow distribution mesh plate (391) is fixedly installed between the top and the bottom of the inner wall of the purification cylinder (39), a submersible pump (392) is fixedly installed at the bottom of the inner wall of the purification cylinder (39), the output pipe of the submersible pump (392) is fixedly connected to a three-way square tube (393), the three-way square tube (393) is fixedly installed at the top of the inner wall of the purification cylinder (39), both sides of the three-way square tube (393) are fixedly connected to hollow plates (394), the bottom of the hollow plate (394) is fixedly connected to an atomizing nozzle (395), the top of the purification cylinder (39) is movably plugged with a plug-in pipe fitting (396), and the top of the plug-in pipe fitting (396) is fixedly connected to a purification square tube (397).

2. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 1, characterized in that: A bottom partition plate No. 1 (3971) is fixedly installed on the inner wall of the purification square tube (397), and a bottom partition plate No. 2 (3972) located on the top of the bottom partition plate No. 1 (3971) is fixedly installed on the inner wall of the purification square tube (397), and non-woven filter plates (3973) are fixedly installed on the inner walls of the bottom partition plate No. 1 (3971) and the bottom partition plate No. 2 (3972).

3. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 2, characterized in that: A drainage solid plate (3974) is welded on the inner wall of the No. 1 bottom baffle (3971), wherein three of the drainage solid plates (3974) overlap in the vertical direction, and the other two of the drainage solid plates (3974) overlap in another vertical direction. The inner cavity of the purification square tube (397) is filled with anthracite located on the top of the No. 2 bottom baffle (3972).

4. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 1, characterized in that: The debris collection unit comprises a hollow frame (31), wherein the hollow frame (31) is fixedly mounted on the outer wall of the inner side of the bottom support seat (1), an inclined inner plate (32) is fixedly mounted on the inner wall of the hollow frame (31), a top support plate (33) is fixedly mounted on the top of the hollow frame (31), a circular through hole (34) is provided on the top of the top support plate (33), and a frame-shaped groove (35) is provided on the top of the top support plate (33).

5. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 4, characterized in that: The purification cylinder (39) is fixedly installed on the back of the hollow frame (31), the filter cylinder (36) is fixedly connected to the back of the hollow frame (31), the filter cylinder (36) is fixedly connected to the back of the filter cylinder (36), the air outlet end of the cylinder-type suction fan (37) is fixedly connected to an air transfer pipe (38), and the end of the air transfer pipe (38) away from the cylinder-type suction fan (37) is movably plugged into the top of the purification cylinder (39).

6. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 5, characterized in that: A sealing cover plate (361) is movably inserted at the top of the filter cylinder (36), a movable inner frame (362) is fixedly installed at the bottom of the sealing cover plate (361), a guide strip (363) is welded to the bottom of the inner wall of the movable inner frame (362), a stainless steel filter screen (364) is fixedly installed on the inner wall of the movable inner frame (362) located at the front, and a nylon fiber filter screen (365) is fixedly installed on the inner wall of the movable inner frame (362) located at the back.

7. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 1, characterized in that: The exhaust pipe clamping unit comprises a right-angle turn support arm (21) and a mounting foot (26); the right-angle turn support arm (21) is fixedly mounted on the top of the bottom support seat (1); a horizontal support plate (22) is fixedly mounted on one end of the right-angle turn support arm (21) away from the bottom support seat (1); a synchronous cylinder body (23) is fixedly mounted on the top of the horizontal support plate (22); a movable end of the synchronous cylinder body (23) extends to the bottom of the horizontal support plate (22) and is fixedly connected to a sliding plate (24).

8. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 7, characterized in that: The bottom of the sliding plate (24) is fixedly connected to a rubber clamping plate (25), the mounting foot (26) is detachably connected to the top of the bottom support seat (1), and the top of the mounting foot (26) is fixedly installed with a fitting ring seat (27).

9. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 7, characterized in that: The welding height adjustment unit comprises an extended strip (28), wherein the extended strip (28) is welded to the inner outer wall of the horizontal support plate (22), a middle portion of the extended strip (28) is fixedly connected to a center seat (29), a smooth rod (291) is welded to the top of the center seat (29), and a lifting round seat (292) is slidably connected to the outer wall of the smooth rod (291).

10. A welding device for manufacturing and processing high-precision automobile exhaust pipes according to claim 9, characterized in that: An electric telescopic cylinder (293) is fixedly installed on the top of the middle seat (29), a transmission block (294) is fixedly installed on the movable end of the electric telescopic cylinder (293), the transmission block (294) is welded to the outer wall of the lifting round seat (292), and the welding machine body (11) is detachably connected to the bottom of the lifting round seat (292).

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