A device for welding a spring plate of a shock absorber of an automobile

Abstract

The application belongs to the technical field of automobile parts production, and discloses a spring disc welding device for automobile shock absorber, which comprises a base, a fixing frame arranged above the base, a fan-shaped groove formed in the top of the base, the front side of the fan-shaped groove being in an open shape and penetrating through the front side and the bottom of the base, a limiting device arranged in the base, and a driving device arranged in the fixing frame. When the external mechanical arm drives the fixing frame to move downward, the limiting device is first made to work by the driving device, so that the shock absorber sleeve is clamped and limited, thereby preventing shaking during subsequent welding. Then, as the inner slide column in the driving device continues to move downward, the feedback assembly is triggered to work, the protective gas supply is turned on, the protective gas is sprayed to the welding position, the welding position is protected, the outer sleeve is rotated, and the welder is driven to weld the welding position.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, and in particular to a welding device for automotive shock absorber spring discs. Background Technology

[0002] The shock absorber is the core component of the car suspension system. It belongs to the vibration damping device. Its main function is to attenuate the vibration caused by road impact, improve driving smoothness and handling safety. It converts mechanical energy into heat energy through hydraulic or gas damping. It reduces resistance to buffer the impact during the compression stroke of the suspension and increases resistance to suppress rebound during the extension stroke, ensuring wheel grip. Currently, when manufacturing automotive shock absorbers, the spring needs to be welded to the spring disc outside the shock absorber sleeve for easy subsequent installation and adjustment. However, the shock absorber sleeve is prone to shaking during welding, causing the welded area at the bottom of the spring to tilt. When the spring is in operation, it will generate a tilting force, making the welded area prone to breaking. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a welding device for automotive shock absorber spring discs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a welding device for automotive shock absorber spring discs, including a base, a fixing frame provided above the base, a fan-shaped groove provided on the top of the base, the front side of the fan-shaped groove being open and extending through to the front side and bottom of the base, a limiting device provided inside the base, and a driving device provided inside the fixing frame. A shock absorber sleeve is fitted inside the fan-shaped groove. The outer surface of the shock absorber sleeve is raised in the middle. A buffer spring that needs to be welded is fixed to the top of the raised part of the outer surface of the shock absorber sleeve.

[0005] Preferably, the limiting device includes two sliding plates, and the interior of the base is provided with bending cavities near the two side edges. The top of the base is provided with a through-hole extending to the bottom. The bent ends of the two bending cavities extend into the through-hole, and the other ends of the two bending cavities extend to the outside of the base.

[0006] Preferably, both slide plates are slidably disposed inside the bending cavity, one end of each slide plate slides through into the fan-shaped groove, one end of each slide plate is fixed with an arc-shaped clamp, the two arc-shaped clamps are located inside the fan-shaped groove near the two side edges, one inner wall of each bending cavity is provided with a first storage cavity, and one inner wall of each first storage cavity is fixed with a first spring sheet.

[0007] Preferably, one side of each of the two slide plates is fixed with a bending plate, one end of each bending plate slides through into the through-hole, and the two first spring plates are both curved in an arc shape, with the curved surfaces corresponding to and fitting against one side of the bending plate. The first spring plates push the bending plate toward the through-hole.

[0008] Preferably, the driving device includes a connecting plate disposed inside the fixed frame. A hydraulic cylinder is fixed at the top of the fixed frame. The output end of the hydraulic cylinder slides through the inside of the fixed frame and is fixed at the top of the connecting plate. An inner sliding column is fixed at the bottom of the connecting plate, and a feedback component is disposed inside the inner sliding column.

[0009] Preferably, a vertical plate is fixed to the bottom of the connecting plate near the rear side. The bottom of the vertical plate slides into the through-hole, and the outer surfaces of both sides of the vertical plate slide against one end of the bending plate. The outer surfaces of both sides of the vertical plate are provided with beveled openings. The bottom surface of the beveled openings is horizontal near the top. Bending frames are fixed to the bottom of the fixing frame near the two side edges. An outer sleeve is fitted to the outer side of the inner sliding column. An outer ring groove is provided on the outer surface of the outer sleeve near the top edge. One end of each of the two bending frames slides into the outer ring groove. A welding device is fixed to one side of the bottom of the outer sleeve.

[0010] Preferably, an annular cover is fixed between the bottoms of the two bending frames, and a worm spring is fixed between the inner wall of the annular cover and the outer surface of the outer sleeve. Arc-shaped openings are provided on the inner walls of both sides of the outer sleeve. The upper part of the two arc-shaped openings is a vertical guide section and the lower part is an inclined guide section, with a smooth transition between the two sections. A lever is fixed on the outer surface of both sides of the inner sliding column, and one end of the two levers is slidably engaged inside the arc-shaped opening.

[0011] Preferably, the feedback component includes an inner ring sleeve, the inner sliding column has a cylindrical cavity extending to the bottom, the inner ring sleeve slides between the inner walls of the cylindrical cavity, an inner ring groove is formed at the middle between the inner walls of the cylindrical cavity, and an air intake pipe is fixed to the rear side of the connecting plate.

[0012] Preferably, the inner top surface of the inner ring groove is provided with an inner flow channel near both sides, and the top of both inner flow channels are connected to the inside of the air intake pipe. The top of the inner ring sleeve extends above the inner ring groove, and the inner ring sleeve can slide axially relative to the inner sliding column. The inner walls on both sides of the cylindrical cavity are provided with a second receiving cavity near the bottom edge. A second spring plate is fixed on one side of the inner wall of each of the two second receiving cavities. The outer surfaces on both sides of the inner ring sleeve are provided with a latch near the bottom edge. One end of each of the two second spring plates is hook-shaped and is engaged inside the latch.

[0013] Preferably, the outer surface of the inner ring sleeve has multiple grid openings that extend into the interior at equal intervals at the middle. A limiting ring is fixed between the inner walls of the inner ring sleeve near the bottom edge. A gap is left between the bottom of the limiting ring and the bottom of the inner ring sleeve. Multiple nozzles are equally spaced along the circumferential direction between the inner walls of the inner ring sleeve near the top of the limiting ring. The bottom of each nozzle extends into the bottom of the inner ring sleeve, and one side of the inner wall of the nozzle extends inclined towards the bottom of the inner side of the inner ring sleeve.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the limiting device is activated by the driving device to limit and clamp the shock absorber sleeve, preventing shaking during subsequent welding. Then, as the inner sliding column inside the driving device continues to move downward, it triggers the feedback component to activate the protective gas supply, spraying the protective gas onto the welding area to protect it. At the same time, the outer sleeve rotates, driving the welder to weld the welding area. 2. When the limiting device in this invention is working, the upright plate slides downward, driving the bending plate to slide the sliding plate into the fan-shaped groove, and then clamps the shock absorber sleeve through the arc-shaped clamping plate to prevent the shock absorber sleeve from shaking during welding operations.

[0015] 3. When the drive device in this invention is working, the hydraulic cylinder extends and retracts to drive the connecting plate, the vertical plate and the inner sliding column to slide downward synchronously, connecting the limit device and the feedback component to work, so that they can work together in a coordinated manner. 4. When the feedback component of this invention is working, the elastic restoring force of the worm spring can assist the outer sleeve in restoring. During this process, the protective gas is blown to the welding part between the shock absorber sleeve and the buffer spring to protect the welding part. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of an embodiment of the present invention; Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 4 This is a partial cross-sectional three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 5 This is a cross-sectional perspective view of the base in an embodiment of the present invention; Figure 6 This is a bottom-view three-dimensional structural diagram of the inner sliding column in an embodiment of the present invention; Figure 7 This is a cross-sectional three-dimensional structural diagram of the inner sliding column in an embodiment of the present invention; Figure 8This is a partial cross-sectional three-dimensional structural diagram of the feedback component in an embodiment of the present invention; Figure 9 This is a side-view perspective view of the outer sleeve structure in an embodiment of the present invention; Figure 10 This is an embodiment of the present invention. Figure 3 A magnified view of a portion of point A in the middle.

[0017] In the diagram: 1. Base; 2. Sector groove; 3. Fixing frame; 4. Bending frame; 5. Outer sleeve; 6. Shock absorber sleeve; 7. Vertical plate; 8. Slanted opening; 9. Through-hole; 10. Annular cover; 11. Air inlet pipe; 12. Connecting plate; 13. Hydraulic cylinder; 14. Snail spring; 15. Bending cavity; 16. Slide plate; 17. Arc-shaped clamp; 18. Buffer spring; 19. First receiving cavity; 20. First spring plate; 21. Bending plate; 22. Welding device; 23. Inner sliding column; 24. Inner flow channel; 25. Lever; 26. Inner annular groove; 27. Second receiving cavity; 28. Arc-shaped lever; 29. ​​Inner annular sleeve; 30. Bayonet; 31. Grid opening; 32. Limiting ring; 33. Nozzle; 34. Outer annular groove; 35. Cylindrical cavity; 36. Second spring plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-10 The present invention provides a technical solution: a welding device for a car shock absorber spring disc, including a base 1, a fixing frame 3 above the base 1, a fan-shaped groove 2 on the top of the base 1, the front side of the fan-shaped groove 2 being open and extending through to the front side and bottom of the base 1, a limiting device being provided inside the base 1, and a driving device being provided inside the fixing frame 3. The inside of the fan-shaped groove 2 is fitted with a shock absorber sleeve 6. The outer surface of the shock absorber sleeve 6 is raised in the middle. A buffer spring 18 that needs to be welded is fixed at the top of the raised part of the outer surface of the shock absorber sleeve 6. The bottom of the fixing frame 3 is fixed with bending frames 4 near the two side edges.

[0020] In use, the shock absorber sleeve 6 is placed inside the sector groove 2, and then the buffer spring 18 to be welded is fitted onto the shock absorber sleeve 6 to complete the installation of the weld. Then, the fixing frame 3 is connected to the external robotic arm, which can drive the fixing frame 3 to move vertically up and down. When the fixing frame 3 moves downward, the top of the shock absorber sleeve 6 will fit onto the bottom of the limiting ring 32. The bottom of the limiting ring 32 is in contact with the top of the shock absorber sleeve 6, making the bottom of the cylindrical cavity 35 closed. When the fixing frame 3 moves downward, it will first be driven by the driving device to... The limiting device operates, clamping the shock absorber sleeve 6 to prevent shaking during subsequent welding. Then, as the inner sliding column 23 inside the drive device continues downward, it triggers the feedback component, activating the protective gas supply and spraying the protective gas onto the welding area for protection. Simultaneously, the outer sleeve 5 rotates, driving the welder 22 to weld the area. The welder 22 is a commercially available product; in actual use, a commercially available welding head can be selected. Those skilled in the art can choose the appropriate model and configuration based on the working conditions. A sliding sealing ring is provided between the inner ring 29 and the inner wall of the cylindrical cavity 35 to achieve gas path sealing during sliding, preventing protective gas leakage.

[0021] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the limiting device includes two sliding plates 16. A bending cavity 15 is provided inside the base 1 near both side edges. A through opening 9 extending to the bottom is provided at the top of the base 1 near the rear edge. The bent ends of both bending cavities 15 extend into the through opening 9, and the other ends of both bending cavities 15 extend to the outside of the base 1. The two sliding plates 16 are slidably disposed inside the bending cavities 15. One end of each sliding plate 16 slides through the fan-shaped groove 2. An arc-shaped clamp 17 is fixed to one end of each sliding plate 16. The shaped clamps 17 are all located inside the fan-shaped groove 2 near the two side edges. The inner wall of one side of each of the two bending cavities 15 is provided with a first storage cavity 19. The inner wall of one side of each of the two first storage cavities 19 is fixed with a first spring sheet 20. The side of each of the two slide plates 16 is fixed with a bending plate 21. One end of each of the two bending plates 21 slides through into the through opening 9. The two first spring sheets 20 are both curved in an arc shape, and the curved surfaces are respectively in contact with one side of the bending plate 21. The first spring sheet 20 pushes the bending plate 21 toward the through opening 9.

[0022] In the initial state, the bottom of the upright plate 7 is located inside the through opening 9, and one end of the bent plate 21 is attached to the side of the upright plate 7 and located at the bottom of the inclined opening 8. At this time, the first spring plate 20 is in a compressed state. When the upright plate 7 slides down, as the upright plate 7 slides down, one end of the bent plate 21 will contact the inclined opening 8. Under the elastic force of the first spring plate 20, the bent plate 21 causes the sliding plate 16 to slowly slide into the fan-shaped groove 2, thereby causing the arc-shaped clamping plate 17 to clamp and constrain the shock absorber sleeve 6 to prevent the shock absorber sleeve 6 from shaking during the welding process.

[0023] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the driving device includes a connecting plate 12, which is disposed inside the fixed frame 3. A hydraulic cylinder 13 is fixed to the top of the fixed frame 3. The output end of the hydraulic cylinder 13 slides through into the fixed frame 3 and is fixed to the top of the connecting plate 12. An inner sliding column 23 is fixed to the bottom of the connecting plate 12. A feedback component is disposed inside the inner sliding column 23. A vertical plate 7 is fixed to the bottom of the connecting plate 12 near the rear side. The bottom of the vertical plate 7 slides into the through-hole 9. Both outer surfaces of the vertical plate 7 slide against one end of the bending plate 21. Both outer surfaces of the vertical plate 7 have beveled openings 8. A horizontal section is provided at the bottom of the beveled opening 8 near the upper end. A bending plate 21 is fixed to the bottom of the fixed frame 3 near both edges. The bending frame 4 has an outer sleeve 5 fitted around the inner sliding column 23. An outer ring groove 34 is formed on the outer surface of the outer sleeve 5 near the top edge. One end of each of the two bending frames 4 is slidably engaged inside the outer ring groove 34. A welder 22 is fixed to one side of the bottom of the outer sleeve 5. An annular cover 10 is fixed between the bottoms of the two bending frames 4. A worm spring 14 is fixed between the inner wall of the annular cover 10 and the outer surface of the outer sleeve 5. Arc-shaped openings 28 are formed on the inner walls of both sides of the outer sleeve 5. The upper part of the two arc-shaped openings 28 is a vertical guide section, and the lower part is an inclined guide section with a smooth transition between the two sections. A lever 25 is fixed on the outer surface of both sides of the inner sliding column 23. One end of each lever 25 is slidably engaged inside the arc-shaped opening 28.

[0024] During operation, the external robotic arm first moves the fixed frame 3 downward, causing the upper part of the shock absorber sleeve 6 to fit inside the outer sleeve 5 until the top of the shock absorber sleeve 6 is engaged with the bottom of the inner ring sleeve 29. At this point, the bottom of the outer sleeve 5 is located at the welding point between the middle of the shock absorber sleeve 6 and the buffer spring 18, and the welding end of the welder 22 is located at the end where the shock absorber sleeve 6 and the buffer spring 18 meet, facilitating subsequent welding. Then, the hydraulic cylinder 13 is activated, and the extension and retraction of the hydraulic cylinder 13 drives the connecting plate 12, the vertical plate 7, and the inner sliding column 23 to slide downward synchronously. During the downward sliding of the inner sliding column 23, in the initial state, the lever 25 is engaged in the vertical slide rail at the top of the arc-shaped lever opening 28. The grid opening 31 in the middle of the inner ring sleeve 29 is located below the inner ring groove 26 and has a certain gap with the bottom surface of the inner ring groove 26. Therefore, in the initial stage, when the lever 25 slides from the top vertical slide of the arc-shaped lever opening 28 into the inclined slide, the grid opening 31 will slide from a certain distance from the bottom of the inner ring groove 26 to the bridging and connecting point with the bottom of the inner ring groove 26. At this time, the downward sliding of the inner sliding column 23 will not trigger the rotation of the outer sleeve 5, nor will it trigger the operation of the feedback component. At this time, one end of the bent plate 21 will slide to the bottom surface of the inclined opening 8 near the top edge and contact the horizontal surface of its top. When it continues to slide downward, one end of the bent plate 21 will slide along the horizontal surface of the top of the inclined opening 8.

[0025] like Figure 3 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the feedback component includes an inner ring sleeve 29. The inner sliding column 23 has a cylindrical cavity 35 extending to the bottom. The inner ring sleeve 29 slides between the inner walls of the cylindrical cavity 35. An inner ring groove 26 is formed in the middle between the inner walls of the cylindrical cavity 35. An air intake pipe 11 is fixed to the rear side of the connecting plate 12. An inner flow channel 24 is formed on the inner top surface of the inner ring groove 26 near both sides. The top of the two inner flow channels 24 are connected to the inside of the air intake pipe 11. The top of the inner ring sleeve 29 extends above the inner ring groove 26. The inner ring sleeve 29 can slide axially relative to the inner sliding column 23. A second receiving cavity 27 is formed on both sides of the inner wall of the cylindrical cavity 35 near the bottom edge. A second spring plate 36 is fixed on one side of the inner wall of each of the two second receiving cavities 27. A latch 30 is formed on both sides of the outer surface of the inner ring sleeve 29 near the bottom edge. One end of each of the two second spring plates 36 is hook-shaped and is engaged inside the latch 30. The outer surface of the inner ring sleeve 29 has multiple grid openings 31 that extend into the interior at equal intervals in the middle. A limiting ring 32 is fixed between the inner walls of the inner ring sleeve 29 near the bottom edge. A gap is left between the bottom of the limiting ring 32 and the bottom of the inner ring sleeve 29. Multiple nozzles 33 are equally spaced along the circumferential direction between the inner walls of the inner ring sleeve 29 near the top of the limiting ring 32. The bottom of each nozzle 33 extends into the bottom of the inner ring sleeve 29, and one side of the inner wall of the nozzle 33 extends inclined towards the bottom of the inner side of the inner ring sleeve 29.

[0026] When the lever 25 slides into the inclined slide of the arc-shaped lever 28, it will cause the outer sleeve 5 to rotate, which will drive the welder 22 to rotate and weld the contact point between the shock absorber sleeve 6 and the buffer spring 18. At the same time, the top of the grid opening 31 will slide from a state of relative communication with the bottom surface of the inner ring groove 26 to a state of relative communication with the top surface of the inner ring groove 26. During the process of the grid opening 31 sliding from the bottom to the top of the inner ring groove 26, the welder 22 is always in the welding state and is driven to rotate by the outer sleeve 5 to complete the arc welding. At the same time, when the outer sleeve 5 rotates, the worm spring 14 is in an elastic contraction state. During the subsequent reset, the worm spring 14 The elastic restoring force can assist the outer sleeve 5 in restoring. During this process, the protective gas is delivered to the inner flow channel 24 through the air inlet pipe 11, and then flows into the inner ring groove 26 through the inner flow channel 24. Inside the inner ring groove 26, the protective gas enters the cylindrical cavity 35 through the grid port 31, and finally sprays out from the nozzle 33 to the bottom of the inner ring sleeve 29, causing it to be blown to the welding part of the shock absorber sleeve 6 and the buffer spring 18, thus protecting the welding part. At this time, since the top of the shock absorber sleeve 6 is located inside the outer sleeve 5, the protective gas sprayed out can be prevented from instantly dissipating to the surroundings inside the outer sleeve 5. The protective gas can only be discharged from the bottom inside the outer sleeve 5, thereby improving the protection effect on the welding part.

[0027] Working principle: As the upright plate 7 slides downward, one end of the bending plate 21 will contact the inclined opening 8. Under the elastic force of the first spring plate 20, the bending plate 21 will drive the sliding plate 16 to slowly slide into the fan-shaped groove 2, thereby driving the arc-shaped clamping plate 17 to clamp and constrain the shock absorber sleeve 6 to prevent the shock absorber sleeve 6 from shaking during the welding process. Then, the hydraulic cylinder 13 is activated. The extension and retraction of the hydraulic cylinder 13 drives the connecting plate 12, the vertical plate 7, and the inner sliding column 23 to slide downward synchronously. First, during the downward sliding of the inner sliding column 23, the outer sleeve 5 will not be triggered to rotate, nor will the feedback component be triggered to work. At this time, one end of the bending plate 21 will slide to the inner bottom surface of the inclined opening 8 near the top edge and contact the horizontal surface of its top. When the inner sliding column 23 continues to slide downward, one end of the bending plate 21 will slide along the horizontal surface of the top of the inclined opening 8. During the process of the grid opening 31 sliding from the bottom of the inner ring groove 26 to the top, the welder 22 is always in the welding state and is driven to rotate by the outer sleeve 5 to complete the arc welding. At the same time, when the outer sleeve 5 rotates, the worm spring 14 is in the elastic contraction state. During subsequent reset, the elastic reset force of the worm spring 14 can assist the outer sleeve 5 in reset. In this process, the protective gas is delivered to the inner flow channel 24 through the air inlet pipe 11, and then enters the cylindrical cavity 35 and is ejected from the nozzle 33 to the bottom of the inner ring sleeve 29, so that it is blown to the welding part of the shock absorber sleeve 6 and the buffer spring 18 to protect the welding part.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for automotive shock absorber spring discs, comprising a base 1, wherein a fixing frame 3 is disposed above the base 1, characterized in that, The top of the base 1 is provided with a fan-shaped groove 2, the front side of the fan-shaped groove 2 is open and extends through to the front side and bottom of the base 1, the base 1 is provided with a limiting device, and the fixed frame 3 is provided with a driving device.

2. The automotive shock absorber spring disc welding device according to claim 1, characterized in that, The limiting device includes two sliding plates 16. The base 1 has bending cavities 15 near the two side edges. The top of the base 1 has a through-hole 9 that extends to the bottom. The bent ends of the two bending cavities 15 extend into the through-hole 9, and the other ends of the two bending cavities 15 extend to the outside of the base 1.

3. The automotive shock absorber spring disc welding device according to claim 2, characterized in that, Both slide plates 16 are slidably disposed inside the bending cavity 15. One end of each slide plate 16 slides through into the fan-shaped groove 2. One end of each slide plate 16 is fixed with an arc-shaped clamp 17. The two arc-shaped clamps 17 are located inside the fan-shaped groove 2 near the two side edges. One inner wall of each bending cavity 15 is provided with a first storage cavity 19. One inner wall of each first storage cavity 19 is fixed with a first spring sheet 20.

4. The automotive shock absorber spring disc welding device according to claim 3, characterized in that, One side of each of the two slide plates 16 is fixed with a bending plate 21. One end of each of the two bending plates 21 slides through into the through hole 9. Both of the two first spring plates 20 are curved in an arc shape, and the curved surfaces are respectively in contact with one side of the bending plate 21. The first spring plates 20 push the bending plate 21 toward the through hole 9.

5. The automotive shock absorber spring disc welding device according to claim 1, characterized in that, The driving device includes a connecting plate 12, which is disposed inside the fixed frame 3. A hydraulic cylinder 13 is fixed at the top of the fixed frame 3. The output end of the hydraulic cylinder 13 slides through the inside of the fixed frame 3 and is fixed at the top of the connecting plate 12. An inner sliding column 23 is fixed at the bottom of the connecting plate 12. A feedback component is disposed inside the inner sliding column 23.

6. The automotive shock absorber spring disc welding device according to claim 5, characterized in that, A vertical plate 7 is fixed to the bottom of the connecting plate 12 near the rear side. The bottom of the vertical plate 7 slides into the through opening 9, and the outer surfaces of both sides of the vertical plate 7 slide against one end of the bending plate 21. The outer surfaces of both sides of the vertical plate 7 are provided with oblique openings 8. The bottom surface of the oblique opening 8 is horizontal near the top. Bending frames 4 are fixed to the bottom of the fixing frame 3 near the two side edges. An outer sleeve 5 is fitted to the outer side of the inner sliding column 23. An outer ring groove 34 is provided on the outer surface of the outer sleeve 5 near the top edge. One end of each of the two bending frames 4 slides and engages inside the outer ring groove 34. A welding device 22 is fixed to one side of the bottom of the outer sleeve 5.

7. The automotive shock absorber spring disc welding device according to claim 6, characterized in that, An annular cover 10 is fixed between the bottoms of the two bending frames 4. A spiral spring 14 is fixed between the inner wall of the annular cover 10 and the outer surface of the outer sleeve 5. Arc-shaped openings 28 are provided on the inner walls of both sides of the outer sleeve 5. The upper part of the two arc-shaped openings 28 is a vertical guide section and the lower part is an inclined guide section, with a smooth transition between the two sections. A lever 25 is fixed on the outer surface of both sides of the inner sliding column 23. One end of the two levers 25 is slidably engaged inside the arc-shaped openings 28.

8. The automotive shock absorber spring disc welding device according to claim 5, characterized in that, The feedback component includes an inner ring sleeve 29. The inner sliding column 23 has a cylindrical cavity 35 extending to the bottom. The inner ring sleeve 29 slides between the inner walls of the cylindrical cavity 35. An inner ring groove 26 is formed in the middle between the inner walls of the cylindrical cavity 35. An air intake pipe 11 is fixed to the rear side of the connecting plate 12.

9. The automotive shock absorber spring disc welding device according to claim 8, characterized in that, The inner top surface of the inner ring groove 26 is provided with inner flow channels 24 near the two side edges. The top of the two inner flow channels 24 are connected to the inside of the air intake pipe 11. The top of the inner ring sleeve 29 extends above the inner ring groove 26, and the inner ring sleeve 29 can slide axially relative to the inner sliding column 23. The inner walls on both sides of the cylindrical cavity 35 are provided with second receiving cavities 27 near the bottom edge. The inner walls on one side of the two second receiving cavities 27 are fixed with second spring plates 36. The outer surfaces on both sides of the inner ring sleeve 29 are provided with latches 30 near the bottom edge. One end of each of the two second spring plates 36 is in the shape of a hook and is engaged inside the latches 30.

10. The automotive shock absorber spring disc welding device according to claim 9, characterized in that, The outer surface of the inner ring sleeve 29 has multiple grid openings 31 that extend into the interior at equal intervals at the middle. A limiting ring 32 is fixed between the inner walls of the inner ring sleeve 29 near the bottom edge. A gap is left between the bottom of the limiting ring 32 and the bottom of the inner ring sleeve 29. Multiple nozzles 33 are equally spaced along the circumferential direction between the inner walls of the inner ring sleeve 29 near the top of the limiting ring 32. The bottom of each nozzle 33 extends into the bottom of the inner ring sleeve 29, and one side of the inner wall of the nozzle 33 extends inclined towards the bottom of the inner side of the inner ring sleeve 29.

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