Auxiliary supporting mechanism of shock absorber outer pipe seam welding machine

Abstract

The invention provides an auxiliary supporting mechanism of a shock absorber outer pipe seam welder, and relates to the technical field of seam welder supporting mechanisms, the auxiliary supporting mechanism comprises a water tank, the water tank is provided with the auxiliary supporting mechanism, the auxiliary supporting mechanism is internally provided with a cleaning frame, the cleaning frame is rotatably provided with a cleaning round sleeve, the inner wall of the cleaning round sleeve is provided with a cleaning rag, and the cleaning rag is provided with a cleaning brush. A cleaning cloth is tightly attached to the inner wall of the cleaning round sleeve, the cleaning round sleeve is rotatably installed on the cleaning frame in a penetrating and limiting mode, a groove and a rectangular groove structure are formed in the lower end of a rotating shaft, the cleaning cloth is tightly attached to the inner wall of the cleaning round sleeve, and the cleaning round sleeve is rotatably installed on the cleaning frame in a penetrating and limiting mode. The cleaning round sleeve can synchronously rotate along with the rotating shaft, so that the cleaning rag can wipe the periphery of a welding seam of the outer pipe body and the bottom cover body in all directions, impurities such as oil stains, rust and oxide skin attached to the surface are effectively removed, and the problem that the corrosion resistance of the welding seam is reduced due to the fact that the workpiece surface is not cleaned thoroughly is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the support mechanism of a seam welder, and more specifically, particularly relates to an auxiliary support mechanism for an outer tube seam welder of a shock absorber. Background Art

[0002] The oil storage cylinder of an automotive shock absorber is an important component for manufacturing automotive shock absorbers. The oil storage cylinder consists of a cylinder part and a base, and the two are often assembled by welding. Since the base is welded to the inner wall of the cylinder part, in the existing process, a seam welder is often used for welding. Seam welding uses a rotating disc-shaped roller electrode instead of a columnar electrode, assembles the workpieces into a lap joint or butt joint, and places them between two roller electrodes. The rollers press the workpieces and rotate, and continuous power supply forms a weld seam.

[0003] The current seam welder is found to have at least the following technical problems: 1. Although the existing seam welder cleans the outer tube and the bottom cover, it is not carried out in the step before welding. As a result, when the outer tube and the bottom cover are installed on the seam welder, they will stick to impurities such as oil stains. Since the cleaning step is disconnected from the welding process, the workpiece is easily re-contaminated during the transfer or temporary storage process, making the originally cleaned surface reattach dust, oil stains, etc. When these workpieces with impurities directly enter the welding link, pores, slag inclusions and other defects are likely to appear at the weld seam, seriously affecting the mechanical properties and corrosion resistance of the welded joint, and further reducing the overall quality and service life of the outer tube of the shock absorber.

[0004] 2. Most of the positioning and supporting structures for the outer tube of the shock absorber in the existing technology adopt a rigid clamping method and lack an effective buffering mechanism. During the resistance welding process, the pressure and current changes applied by the electrode will generate an instantaneous impact. Due to the absence of an elastic buffer component, the outer tube body is easily deformed or displaced due to the rigid impact, resulting in problems such as the welding position deviating from the preset trajectory, weld seam misalignment, and false welding. At the same time, the traditional positioning mechanism is difficult to adapt to outer tube bodies of different heights, and it is necessary to frequently replace or adjust the fixture, which not only increases the operation complexity but also reduces the production efficiency and cannot meet the welding requirements of diverse workpieces. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an auxiliary support mechanism for an outer tube seam welder of a shock absorber to solve the above problems.

[0006] An auxiliary support mechanism for a shock absorber outer tube seam welder includes a water tank. An auxiliary support mechanism is provided on the water tank. A cleaning frame is arranged inside the auxiliary support mechanism. A cleaning round sleeve is rotatably installed on the cleaning frame. A cleaning cloth is arranged on the inner wall of the cleaning round sleeve. A connecting block is fixedly installed on the cleaning round sleeve. The cleaning round sleeve and the connecting block are installed on the cleaning frame through limiting rotation. The inner wall of the cleaning round sleeve is in contact with the bottom cover body and the outer tube body. A fixed base is arranged inside the auxiliary support mechanism. There are two positioning mechanisms for preventing polarization of the shock absorber outer tube at the lower end of the cleaning frame. A gear mechanism that can be linked is arranged between each of the two positioning mechanisms and the cleaning frame. A fixing mechanism for fixing the outer tube body at different heights is arranged on the fixed base.

[0007] Preferably, the fixed base is fixedly installed at the bottom of the inner wall of the water tank. A U-shaped frame is slidably installed on the fixed base. A threaded rod is connected to the U-shaped frame by threading. A small motor is fixedly installed on the U-shaped frame. A rotating shaft is fixedly installed at the lower end of the small motor through an output shaft. A groove is opened at the lower end of the rotating shaft. The groove opened on the rotating shaft is in contact with the top of the outer tube body. A rectangular groove is opened in the groove opened on the rotating shaft. Preferably, the positioning mechanism includes a moving plate. Two circular grooves are opened on the moving plate. A first guide rod is slidably installed through each of the two circular grooves opened on the moving plate. A positioning clamping plate is fixedly installed between the side ends of the two first guide rods. First springs are arranged in the two circular grooves opened on the moving plate. The two first springs are respectively sleeved on the circumferential surfaces of the two first guide rods and are fixedly installed between the positioning clamping plate and the moving plate. Preferably, the gear mechanism includes a fixing plate. A spur gear is rotatably installed inside the fixing plate. A first rack is horizontally engaged with the circumferential surface of the spur gear. A second rack is vertically engaged with the circumferential surface of the spur gear. The first rack is fixedly connected to the moving plate. A connecting rod is fixedly installed on the second rack. A second guide rod is slidably installed through the connecting rod. The second guide rod is fixedly installed on the fixing plate. A second spring is sleeved on the second guide rod. The second spring is fixedly installed between the fixing plate and the connecting rod. Preferably, the fixing mechanism includes a top plate. The top plate is fixedly installed on the fixed base. A third guide rod is slidably inserted through the top plate. A bottom support is fixedly installed at the upper end of the third guide rod. A third spring is arranged between the bottom support and the top plate. The third spring is sleeved on the circumferential surface of the third guide rod. Support rods are fixedly installed at both side ends of the top plate. The two fixing plates are respectively fixedly installed on the two support rods.

[0008] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a cleaning rag is closely attached to the inner wall of the cleaning circular sleeve, and the cleaning circular sleeve is rotatably installed on the cleaning rack. In cooperation with the groove and rectangular groove structures provided at the lower end of the rotating shaft, when the small motor drives the rotating shaft to rotate, the cleaning circular sleeve can rotate synchronously with the rotating shaft, enabling the cleaning rag to wipe all around the weld seam periphery of the outer pipe body and the bottom cover body, effectively removing impurities such as oil stains, rust, and scale adhering to the surface. This design avoids the problem of the decline in the corrosion resistance of the weld seam caused by incomplete cleaning of the workpiece surface, and at the same time eliminates the potential risk of pores serving as fatigue crack sources, fundamentally enhancing the reliability of the welding quality.

[0009] In the present invention, a first spring is provided between the moving plate and the positioning clamping plate of the positioning mechanism, and the first spring is sleeved on the circumferential surface of the first guide rod. When the positioning clamping plate clamps the outer pipe body, the elastic buffering effect of the spring can significantly reduce the instantaneous impact generated by the pressure and current changes applied by the electrode during the resistance welding process. This design prevents the outer pipe from deforming or displacing due to rigid impact, ensuring the accuracy of the welding position. Especially in high-frequency welding operations, it can effectively avoid problems such as weld misalignment and false soldering caused by workpiece offset, providing a stable support basis for subsequent welding processes.

[0010] In the present invention, the spur gear of the gear mechanism meshes with the horizontal first rack and the vertical second rack at the same time. When the cleaning rack drives the connecting rod to move, the second rack drives the spur gear to rotate, and then drives the first rack to drive the moving plate in a linkage manner, realizing the synchronous control of the opening and closing action of the positioning clamping plate and the movement of the cleaning rack. This mechanical linkage structure does not require an additional power source and simplifies the operation process through pure mechanical transmission. The operator only needs to push the cleaning rack to complete the clamping and positioning of the workpiece, which not only improves the workpiece clamping efficiency but also reduces the use of electronic control components, lowering the equipment failure rate and maintenance cost.

[0011] In the present invention, a third spring is provided between the bottom support and the top plate of the fixing mechanism, and the third spring is sleeved on the circumferential surface of the third guide rod. When outer pipe bodies of different heights are placed on the bottom support, the bottom support can slide up and down along the third guide rod, and the clamping force is adaptively adjusted through the elastic force of the third spring. This design enables the device to be compatible with outer pipe bodies of various specifications. Whether it is a short pipe or a long pipe, stable fixation can be achieved through the elastic deformation of the spring, avoiding the drawback of the traditional fixing device needing to frequently replace accessories, and significantly enhancing the versatility and application range of the device.

[0012] In the present invention, the groove opened at the lower end of the rotating shaft fits with the top of the outer tube body, and the connecting block of the cleaning circular sleeve is clamped with the rectangular groove in the groove, realizing seamless switching between the cleaning function and the welding function. During the cleaning stage, the rotating shaft drives the cleaning circular sleeve to rotate to complete surface cleaning. After the cleaning is completed, the U-shaped frame is adjusted so that the groove of the rotating shaft fits with the top of the bottom cover body. The small motor can drive the rotating shaft to drive the workpiece to rotate, facilitating the circumferential seam welding of the electrode. This integrated design reduces the steps of secondary clamping of the workpiece, avoids repeated positioning errors, simplifies the equipment structure at the same time, makes the entire welding process more compact and efficient, and improves the production efficiency and the machining accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic structural diagram of the fixed base of the present invention; Figure 3 is a schematic structural diagram of the U-shaped frame of the present invention; Figure 4 is a schematic structural diagram of the rotating shaft of the present invention; Figure 5 is a schematic structural diagram of the cleaning rack of the present invention; Figure 6 is a schematic structural diagram of the fixing plate of the present invention; Figure 7 is the present invention Figure 3 Schematic enlarged view of the structure at position A; Figure 8 is the present invention Figure 4 Schematic enlarged view of the structure at position B.

[0014] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows: 11, cleaning rack; 12, cleaning circular sleeve; 13, outer tube body; 14, bottom cover body; 15, connecting block; 21, rotating shaft; 22, rectangular groove; 23, groove; 24, small motor; 25, U-shaped frame; 26, threaded rod; 31, fixing plate; 32, first rack; 33, spur gear; 34, second rack; 35, connecting rod; 36, support rod; 41, moving plate; 42, first guide rod; 43, first spring; 44, positioning clamping plate; 45, second spring; 46, second guide rod; 51, fixed base; 52, top plate; 53, third spring; 54, third guide rod; 55, bottom support; 56, water tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0016] Please refer to Figures 1-8, the present invention provides an auxiliary support mechanism for a shock absorber outer tube seam welder, including a water tank 56. An auxiliary support mechanism is provided on the water tank 56. A cleaning frame 11 is provided inside the auxiliary support mechanism. A cleaning circular sleeve 12 is rotatably installed on the cleaning frame 11. A cleaning rag is provided on the inner wall of the cleaning circular sleeve 12. A connecting block 15 is fixedly installed on the cleaning circular sleeve 12. The cleaning circular sleeve 12 and the connecting block 15 are installed on the cleaning frame 11 through limit rotation. The inner wall of the cleaning circular sleeve 12 is attached to the bottom cover body 14 and the outer tube body 13. When it is necessary to clean the connection between the outer tube body 13 and the bottom cover body 14, the cleaning circular sleeve 12 is sleeved on the circumferential surfaces of the outer tube body 13 and the bottom cover body 14, and then the surfaces of the outer tube body 13 and the bottom cover body 14 are cleaned through the rotation of the cleaning circular sleeve 12 and the cleaning rag inside it, so as to avoid reducing the corrosion resistance of the weld due to unclean oil stains, rust, and scale on the surface of the workpiece, and pores may become fatigue crack sources. A fixed base 51 is provided inside the auxiliary support mechanism.

[0017] Two positioning mechanisms for preventing polarization of the shock absorber outer tube are provided at the lower end of the cleaning frame 11. A gear mechanism that can be linked is provided between the two positioning mechanisms and the cleaning frame 11. A fixing mechanism for fixing the outer tube body 13 at different heights is provided on the fixed base 51.

[0018] In this embodiment, as Figure 1 , Figure 3 , Figure 7 shown, the fixed base 51 is fixedly installed at the bottom of the inner wall of the water tank 56. A U-shaped frame 25 is slidably installed on the fixed base 51. A threaded rod 26 is connected to the U-shaped frame 25 by threads. The threaded rod 26 is controlled by a motor, and both the threaded rod 26 and the motor are installed on the fixed base 51. When it is necessary to move the U-shaped frame 25 up and down, the threaded rod 26 can be controlled by the motor, and then the U-shaped frame 25 is driven to move up and down. A small motor 24 is fixedly installed on the U-shaped frame 25. A rotating shaft 21 is fixedly installed at the lower end of the small motor 24 through an output shaft. A groove 23 is opened at the lower end of the rotating shaft 21. The groove 23 opened on the rotating shaft 21 fits with the top of the outer tube body 13. A rectangular groove 22 is opened in the groove 23 opened on the rotating shaft 21. When the cleaning circular sleeve 12 is driven to rotate by the rotating shaft 21, the connecting block 15 at the upper end of the cleaning circular sleeve 12 will be inserted into the rectangular groove 22 opened on the rotating shaft 21. Through the limit of the connecting block 15, the rotating shaft 21 can drive the cleaning circular sleeve 12 to rotate, and then the outer tube body 13 and the bottom cover body 14 are cleaned. Moreover, the rotating shaft 21 can move up and down through the control of the threaded rod 26.

[0019] In this embodiment, as Figure 1 , Figure 5 , Figure 6As shown in the figure, the positioning mechanism includes a moving plate 41. Two circular grooves are formed in the moving plate 41. A first guiding rod 42 is slidably installed through each of the two circular grooves formed in the moving plate 41. A positioning clamping plate 44 is fixedly installed between the side ends of the two first guiding rods 42. First springs 43 are provided in each of the two circular grooves formed in the moving plate 41. The two first springs 43 are respectively sleeved on the circumferential surfaces of the two first guiding rods 42 and are fixedly installed between the positioning clamping plate 44 and the moving plate 41. When the positioning clamping plate 44 clamps the outer tube body 13, the moving plate 41 will move towards the bottom cover body 14 driven by the gear mechanism, thereby driving the positioning clamping plate 44 to fit with the outer tube body 13. The first spring 43 provided between the positioning clamping plate 44 and the moving plate 41 can reduce the impact transmitted to the outer tube and prevent the outer tube from deforming and displacing due to rigid impact, ensuring the accuracy of the welding position. For example, for the instantaneous impact generated by the change of the pressure and current applied by the electrode during resistance welding, the spring can effectively relieve it.

[0020] In this embodiment, as Figure 1 , Figure 5 , Figure 6 shown, the gear mechanism includes a fixing plate 31. A spur gear 33 is rotatably installed in the fixing plate 31. A first rack 32 is horizontally engaged with the circumferential surface of the spur gear 33. A second rack 34 is vertically engaged with the circumferential surface of the spur gear 33. The first rack 32 is fixedly connected to the moving plate 41. A connecting rod 35 is fixedly installed on the second rack 34. A second guiding rod 46 is slidably installed through the connecting rod 35. The second guiding rod 46 is fixedly installed on the fixing plate 31. A second spring 45 is sleeved on the second guiding rod 46. The second spring 45 is fixedly installed between the fixing plate 31 and the connecting rod 35. When it is necessary to clean the positions of the outer tube body 13 and the bottom cover body 14, first move the cleaning frame 11 towards the position of the fixing plate 31. At this time, the cleaning frame 11 drives the two connecting rods 35 to move, and the two connecting rods 35 can drive the second rack 34 to move. Through the engagement between the second rack 34 and the spur gear 33, the spur gear 33 can be rotated. Then, through the engagement between the spur gear 33 and the first rack 32, the first rack 32 can drive the moving plate 41 to move, so that the two positioning clamping plates 44 move away from each other. At this time, the outer tube body 13 and the bottom cover body 14 are placed on the fixing mechanism, and then the cleaning frame 11 is pulled to place the cleaning circular sleeve 12 inside it on the outer tube body 13 and the bottom cover body 14. Then, by adjusting the position of the U-shaped frame 25, the rotating shaft 21 is clamped with the connecting block 15, thereby completing the placement of the outer tube body 13 and the bottom cover body 14.

[0021] In this embodiment, as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 8As shown, after the outer tube body 13 and the bottom cover body 14 are cleaned, the outer tube body 13 can be moved downward through the fixing mechanism, and then the outer tube body 13 and the bottom cover body 14 are removed from the cleaning circular sleeve 12. At this time, under the elastic force of the two second springs 45, the two connecting rods 35 will be moved away from the outer tube body 13. At this time, the two positioning clamping plates 44 will move closer to each other to clamp the outer tube body 13. The cleaning circular sleeve 12 on the cleaning frame 11 also moves away from the upper ends of the outer tube body 13 and the bottom cover body 14. And at this time, the motor and the threaded rod 26 can be used to adjust the U-shaped frame 25, so that the U-shaped frame 25 moves downward. Then the rotating shaft 21 on the U-shaped frame 25 will move downward to the top of the bottom cover body 14, and the bottom cover body 14 is adapted to the groove 23 opened on the rotating shaft 21. When welding the outer tube body 13 and the bottom cover body 14, the small motor 24 can be used to drive the rotating shaft 21 to rotate, and then drive the outer tube body 13 and the bottom cover body 14 to rotate through the rotating shaft 21, so as to facilitate the welding of the two electrodes to the outer tube body 13 and the bottom cover body 14.

[0022] In this embodiment, as Figure 1 , Figure 2 shown, the fixing mechanism includes a top plate 52, the top plate 52 is fixedly installed on the fixing base 51, a third guide rod 54 is inserted and slidably installed on the top plate 52, a bottom support 55 is fixedly installed at the upper end of the third guide rod 54, the bottom support 55 is used to support the bottom of the outer tube body 13, and a third spring 53 is provided between the bottom support 55 and the top plate 52. The third spring 53 is sleeved on the circumferential surface of the third guide rod 54. When the outer tube body 13 needs to be installed, the bottom of the outer tube body 13 is placed inside the bottom support 55, and then pressed downward forcefully. At this time, the bottom support 55 and the third guide rod 54 will be inserted into the inside of the fixing base 51 and the top plate 52. Then when the outer tube body 13 is aligned with the cleaning circular sleeve 12 or the rotating shaft 21 at the top, the outer tube body 13 is released. Under the elastic force of the third spring 53, it will play a role in squeezing the outer tube body 13, so as to fix it. Support rods 36 are fixedly installed at both side ends of the top plate 52, and two fixing plates 31 are respectively fixedly installed on the two support rods 36.

[0023] Working principle: In the first step, the cleaning frame 11 is pushed towards the fixing plate 31. The cleaning frame 11 drives the connecting rod 35 to move. The movement of the connecting rod 35 causes the second rack 34 to move accordingly. The second rack 34 meshes with the spur gear 33, driving the spur gear 33 to rotate. The spur gear 33 then meshes with the first rack 32, prompting the first rack 32 to drive the moving plate 41 to move, and further enabling the two positioning clamping plates 44 to move away from each other, and placing the outer tube body 13 and the bottom cover body 14 on the bottom support 55 of the fixing mechanism.

[0024] In the second step, pull the cleaning frame 11 so that the cleaning circular sleeve 12 inside the cleaning frame 11 is sleeved on the circumferential surfaces of the outer tube body 13 and the bottom cover body 14. Control the threaded rod 26 through the motor to adjust the position of the U-shaped frame 25, so that the rotating shaft 21 moves downward. The rectangular groove 22 opened on the rotating shaft 21 is clamped with the connecting block 15 on the cleaning circular sleeve 12. Start the small motor 24, and the small motor 24 drives the rotating shaft 21 to rotate through the output shaft. The rotating shaft 21 drives the cleaning circular sleeve 12 to rotate through the connecting block 15. The cleaning rag on the inner wall of the cleaning circular sleeve 12 cleans the surfaces of the outer tube body 13 and the bottom cover body 14, removing impurities such as oil stains, rust, and scale, so as to avoid affecting the corrosion resistance of the weld and generating pores.

[0025] In the third step, after the cleaning is completed, pull the cleaning frame 11 outwards so that the cleaning circular sleeve 12 moves away from the upper ends of the outer tube body 13 and the bottom cover body 14. Under the elastic force of the two second springs 45, the connecting rod 35 moves away from the outer tube body 13, driving the second rack 34 to move. Through the gear mechanism, the first rack 32 drives the moving plate 41 to move, and the two positioning clamping plates 44 approach each other to clamp the outer tube body 13, preventing the workpiece from polarizing during the welding process. After the outer tube body 13 and the bottom cover body 14 are cleaned, they press down on the bottom support 55, and the bottom support 55 and the third guide rod 54 are inserted into the inside of the fixed base 51 and the top plate 52. When the outer tube body 13 is aligned with the cleaning circular sleeve 12 or the rotating shaft 21 at the top, release the outer tube body 13. Under the elastic force of the third spring 53, the bottom support 55 plays a role in pressing and fixing the outer tube body 13.

[0026] In the fourth step, control the threaded rod 26 through the motor to make the U-shaped frame 25 move downward, and the rotating shaft 21 on the U-shaped frame 25 moves down to the top of the bottom cover body 14. The bottom cover body 14 is adapted to the groove 23 opened on the rotating shaft 21.

[0027] In the fifth step, start the small motor 24, and the small motor 24 drives the rotating shaft 21 to rotate. The rotating shaft 21 drives the outer tube body 13 and the bottom cover body 14 to rotate, facilitating the welding of the two electrodes to the outer tube body 13 and the bottom cover body 14.

[0028] In the sixth step, after the welding is completed, first control the threaded rod 26 through the motor to make the U-shaped frame 25 move upward to separate the rotating shaft 21 from the bottom cover body 14. Then push the cleaning frame 11 to make the positioning clamping plates 44 move away from each other to release the clamping of the workpiece. Finally, take out the outer tube body 13 and the bottom cover body 14 from the bottom support 55.

[0029] Embodiments of the present invention are provided for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications suited to the particular use contemplated.

Claims

1. An auxiliary support mechanism for a shock absorber outer tube seam welder, including a water tank (56), characterized in that: An auxiliary support mechanism is provided on the water tank (56). A cleaning rack (11) is provided inside the auxiliary support mechanism. A cleaning round sleeve (12) is rotatably installed on the cleaning rack (11). A cleaning rag is provided on the inner wall of the cleaning round sleeve (12). A connecting block (15) is fixedly installed on the cleaning round sleeve (12). The cleaning round sleeve (12) and the connecting block (15) are installed through and limitedly rotated on the cleaning rack (11). A fixed base (51) is provided inside the auxiliary support mechanism. Among them, two positioning mechanisms for preventing polarization of the shock absorber outer tube are provided at the lower end of the cleaning rack (11). A gear mechanism capable of linkage is provided between each of the two positioning mechanisms and the cleaning rack (11). A fixing mechanism is provided on the fixed base (51).

2. The auxiliary support mechanism of a shock absorber outer tube seam welder according to claim 1, characterized in that, The fixed base (51) is fixedly installed on the inner bottom of the water tank (56). A U-shaped frame (25) is slidably installed on the fixed base (51). A threaded rod (26) is connected to the U-shaped frame (25) by threading. A small motor (24) is fixedly installed on the U-shaped frame (25).

3. The auxiliary support mechanism of a shock absorber outer tube seam welder according to claim 2, characterized in that, A rotating shaft (21) is fixedly installed at the lower end of the small motor (24) through an output shaft. A groove (23) is opened at the lower end of the rotating shaft (21). A rectangular groove (22) is opened in the groove (23) opened in the rotating shaft (21).

4. The auxiliary support mechanism of a shock absorber outer tube seam welding machine as described in claim 3, characterized in that, The positioning mechanism includes a moving plate (41). Two circular grooves are opened on the moving plate (41). A first guide rod (42) is slidably installed through each of the two circular grooves opened on the moving plate (41). A positioning clamping plate (44) is fixedly installed between the side ends of the two first guide rods (42).

5. The auxiliary support mechanism of a shock absorber outer tube seam welder as described in claim 4, characterized in that, A first spring (43) is provided in each of the two circular grooves opened on the moving plate (41). The two first springs (43) are respectively sleeved on the circumferential surfaces of the two first guide rods (42) and are fixedly installed between the positioning clamping plate (44) and the moving plate (41).

6. The auxiliary support mechanism of a shock absorber outer tube seam welding machine according to claim 5, characterized in that The gear mechanism includes a fixing plate (31). A flat gear (33) is rotatably installed inside the fixing plate (31). A first rack (32) is horizontally engaged with the circumferential surface of the flat gear (33). A second rack (34) is vertically engaged with the circumferential surface of the flat gear (33).

7. The auxiliary support mechanism of a shock absorber outer tube seam welder as described in claim 6, characterized in that, The first rack (32) is fixedly connected to the moving plate (41). A connecting rod (35) is fixedly installed on the second rack (34). A second guide rod (46) is slidably installed through the connecting rod (35). The second guide rod (46) is fixedly installed on the fixing plate (31).

8. The auxiliary support mechanism of a shock absorber outer tube seam welding machine according to claim 7, characterized in that, A second spring (45) is sleeved on the second guide rod (46). The second spring (45) is fixedly installed between the fixing plate (31) and the connecting rod (35).

9. The auxiliary support mechanism of a shock absorber outer tube seam welder as described in claim 8, characterized in that, The fixing mechanism includes a top plate (52). The top plate (52) is fixedly installed on the fixed base (51). A third guide rod (54) is slidably inserted through the top plate (52). A bottom support (55) is fixedly installed at the upper end of the third guide rod (54).

10. The auxiliary support mechanism of a shock absorber outer tube seam welder according to claim 9, characterized in that, A third spring (53) is provided between the bottom support (55) and the top plate (52). The third spring (53) is sleeved on the circumferential surface of the third guide rod (54). Support rods (36) are fixedly installed at both side ends of the top plate (52), and the two fixing plates (31) are respectively fixedly installed on the two support rods (36).

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