Spot welding device for stop ring of piston rod of multi-station shock absorber

Abstract

The invention belongs to the technical field of shock absorber parts, and particularly relates to a multi-station shock absorber piston rod stop ring spot welding device which comprises a working disc, a stepping type driving mechanism, positioning mechanisms, welding mechanisms and a pressing mechanism, the working disc is provided with a plurality of feeding stations which are evenly distributed in the circumferential direction, each feeding station is provided with one positioning mechanism, and the welding mechanisms are arranged on the working disc. The positioning mechanism is used for positioning the piston rod and the stop ring; the stepping type driving mechanism is in transmission connection with the working disc and used for driving the working disc to rotate in a stepping mode so that the feeding stations can rotate to the welding mechanism one by one. The pressing mechanism is arranged at the welding mechanism and used for pressing the piston rod and the stop ring which rotate to the feeding station of the welding mechanism. And the welding mechanism is used for welding the piston rod and the stop ring which are positioned at the feeding station. And by arranging the multiple feeding stations, continuous welding operation is achieved, and the welding efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shock absorber components, and particularly relates to a multi-station spot welding device for the stop ring of a shock absorber piston rod. Background Art

[0002] The main function of the stop ring on the shock absorber is to limit the stroke of the shock absorber. It is usually welded to the piston rod. The connection strength between the stop ring and the piston rod and the surface quality of the piston rod will directly affect the performance of the shock absorber.

[0003] The stop ring of the shock absorber is welded to the piston rod of the shock absorber. The existing automatic spot welding device for the stop ring of the shock absorber, such as the automatic spot welding retaining ring device for the shock absorber disclosed in the Chinese utility model patent with the authorization announcement number CN213105044U, includes a horizontally arranged equipment connecting plate. A moving module is provided on the top of the floating bottom plate. The moving module includes an adjusting lead screw and a guide rod. A slider is provided on the moving module. A rotating cylinder is provided on the slider. The rotating disk of the rotating cylinder is arranged to the left. A rotating cylinder connecting block is provided on the left side surface of the rotating disk of the rotating cylinder. A jaw cylinder is fixedly provided on the left side surface of the rotating cylinder connecting block. The jaws of the jaw cylinder are arranged to the left. A vertically upward arranged retaining ring positioning block is provided at a relative position on the left side of the top surface of the floating bottom plate. Upper electrodes are provided at relative positions on the top of the retaining ring, and lower electrodes are provided at relative positions on the bottom of the retaining ring. The upper electrode is arranged with a gap from the retaining ring, and the lower electrode is arranged with a gap from the retaining ring.

[0004] The above-mentioned automatic spot welding device for the stop ring of the shock absorber can reliably position and weld the piston rod and the stop ring. However, after each welding is completed, it is necessary to take out the piston rod and the stop ring together, and then re-place the piston rod and the stop ring and position them. During this process, the welding device is in an idle state and cannot be effectively utilized, resulting in low welding efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-station spot welding device for the stop ring of a shock absorber piston rod to solve the technical problem of low welding efficiency of the existing stop ring spot welding device for the shock absorber.

[0006] To solve the above problems, the multi-station spot welding device for the stop ring of the shock absorber piston rod provided by the present invention adopts the following technical solutions: The multi-station spot welding device for the stop ring of the shock absorber piston rod includes a working disk, a stepping drive mechanism, a positioning mechanism, a welding mechanism, and a pressing mechanism; The working disk is provided with a plurality of feeding stations evenly distributed in a circumferential manner, and the positioning mechanism is arranged at each feeding station for positioning the piston rod and the stop ring; the stepping drive mechanism is in transmission connection with the working disk and is used to drive the working disk to rotate step by step, so that the feeding stations are successively rotated to the welding mechanism; the pressing mechanism is arranged at the welding mechanism and is used to press the piston rod and the stop ring on the feeding station rotated to the welding mechanism; the welding mechanism is used to weld the piston rod and the stop ring positioned at the feeding station.

[0007] Advantages of the present invention: When the present invention is in use, the piston rod and the stop ring can be positioned and placed at each feeding station, and the piston rod and the stop ring at each feeding station are successively rotated to the welding mechanism by using the stepping drive mechanism, so as to realize continuous welding operation and improve the welding efficiency; in addition, during spot welding, the already welded piston rod and stop ring can be removed from the corresponding feeding station, and the piston rod and stop ring to be welded can be placed, so that there are always a piston rod and a stop ring at each feeding station. Compared with the prior art, the welding efficiency is greatly improved. Further, the stepping drive mechanism is a cam divider.

[0008] Advantages: The cam divider has high-precision indexing and positioning, high rigidity and impact resistance, high-efficiency transmission and low wear, and a compact structure. In addition, it is an existing device, which can be directly purchased and used, and is convenient to install.

[0009] Further, the welding mechanism is a multi-point welding mechanism.

[0010] Advantages: It can complete the operation of multiple welding points at one time and improve the welding efficiency.

[0011] Further, the positioning mechanism includes a base, a stop ring positioning seat, a spring limiting mechanism, and a piston rod positioning seat; the base is provided with a lateral opening extending in the vertical direction, the stop ring positioning seat is arranged in the lateral opening, the stop ring positioning seat has a lateral opening and a stop positioning surface, the stop positioning surface is located above the lateral opening and is used for stop cooperation with the stop ring, the lateral opening is vertically communicated with the lateral opening and the caliber of the lateral opening is not larger than the minimum aperture of the lateral opening, and is used for the piston rod to be inserted and taken out along its radial direction; the spring limiting mechanism includes two spring claws and a spring connected to the same end of the two spring claws, each spring claw is rotatably assembled on the base, in the natural state of the spring, a guiding opening and a limiting opening are formed between the two spring claws, the limiting opening is vertically opposite to the lateral opening, and the piston rod is placed at the lateral opening and the limiting opening through the guiding opening; the piston rod positioning seat is provided with a piston rod positioning groove for the piston rod to be inserted, and the top of the piston rod positioning seat is used for stop cooperation with the step on the piston rod.

[0012] Beneficial effects: During use, the piston rod sleeved with a stop ring is inserted through the lateral opening from one side of the guiding port into the positions of the limiting port and the lateral opening. The lower end of the piston rod is inserted onto the piston rod positioning seat, and the step of the piston rod is in blocking contact with the piston rod positioning seat. The stop ring is positioned on the stop ring positioning seat through the blocking positioning surface, achieving rapid positioning of the piston rod and the stop ring, and improving the positioning efficiency of the piston rod and the stop ring. After welding is completed, simply open the guiding port, pull out the bottom end of the piston rod from the piston rod positioning seat, and then the piston rod together with the stop ring can be quickly pulled out from the lateral opening. The entire positioning process and disassembly process are simple and fast, ensuring the welding efficiency.

[0013] Furthermore, each spring claw has a V-shaped limiting surface and a guiding inclined surface. The distance between the guiding inclined surfaces of the two spring claws in the radial direction of the piston rod gradually decreases from the direction away from the lateral opening towards the direction close to the lateral opening. The minimum diameter of the guiding port is smaller than the diameter of the part of the piston rod inserted into the lateral opening. [[ID=***]]

[0014] Beneficial effects: The V-shaped limiting surface facilitates the centering of the piston rod and prevents the piston rod from tilting when the working plate rotates; when the piston rod is inserted from the guiding port, it will squeeze the two spring claws, causing the two spring claws to open, and then it can enter the limiting port and the lateral opening through the guiding port, making the operation more convenient.

[0015] Furthermore, the spring claw includes a mounting portion and a main body portion. The V-shaped limiting surface and the guiding inclined surface are both located on the main body portion. The mounting portion is rotatably assembled with the base, and the spring is fixed between the mounting portions of the two spring claws; the main body portion is detachably connected to the mounting portion.

[0016] Beneficial effects: When the main body portion is damaged, it can be disassembled and replaced from the mounting portion without replacing the entire spring limiting mechanism; in addition, the main body portion of different sizes can also be replaced to limit piston rods of different diameters.

[0017] Furthermore, the stop ring positioning seat is provided with a guiding groove extending in the up and down direction, and the base is provided with a guiding hole corresponding to the guiding groove. A guiding member for extending into the guiding groove is inserted through the guiding hole.

[0018] Beneficial effects: The guiding member can ensure the correct orientation of the lateral opening for subsequent positioning and placement of the piston rod.

[0019] Furthermore, the height of the piston rod positioning seat is adjustable. The positioning mechanism further includes a tightening guiding seat located below the piston rod positioning seat. The tightening guiding seat is connected to the base. A through hole coaxial with the piston positioning groove is opened on the tightening guiding seat, and the output end of the tightening mechanism is used to pass through the through hole to make the piston rod positioning seat tighten the piston rod under the action of the tightening mechanism.

[0020] Beneficial effects: It is beneficial to realize the pressing of the piston rod, thereby ensuring that the piston rod does not easily move during spot welding.

[0021] Furthermore, the pressing mechanism includes a downward pressing mechanism and an upward pushing mechanism. The downward pressing mechanism is used to press the retaining ring and the piston rod downward, and the output end of the upward pushing mechanism is used to pass through the perforation to tightly push the piston rod positioning seat upward.

[0022] Beneficial effects: It can realize the pressing of the piston rod and the retaining ring from the upper and lower directions respectively to ensure the welding quality.

[0023] Furthermore, the downward pressing mechanism includes a downward pressing cylinder and a pressing block connected to the power output end of the downward pressing cylinder. A positioning hole adapted to the top of the piston rod is provided in the center of the pressing block, and a plurality of pressing claws for pressing the retaining ring are arranged around the positioning hole on the pressing block; the upward pushing mechanism is a servo electric cylinder, and the output rod of the servo electric cylinder is used to pass through the perforation to tightly push the piston rod positioning seat upward.

[0024] Beneficial effects: It can quickly realize the pressing of the piston rod and the retaining ring, and the pressing block can be used in multiple functions, saving costs. Description of the Drawings

[0025] Figure 1 Is a three-dimensional schematic diagram of the multi-station shock absorber piston rod retaining ring spot welding device of the present invention; Figure 2 Is Figure 1 The front view of; Figure 3 Is Figure 1 The side view of; Figure 4 Is Figure 1 The top view of; Figure 5 Is an assembly schematic diagram between the working disk, the step-by-step driving mechanism and the positioning mechanism; Figure 6 Is Figure 5 The top view of; Figure 7 Is a structural schematic diagram of the pressing block; Figure 8 Is a structural schematic diagram of the positioning mechanism; Figure 9 Is a sectional view of the positioning mechanism; Figure 10 Is a structural schematic diagram of the spring limiting mechanism; Figure 11 Is a structural schematic diagram of the retaining ring positioning seat; Figure 12 Is a structural schematic diagram of the base.

[0026] Description of the reference numerals: 1. Working plate; 2. Stepping drive mechanism; 21. Indexing plate; 3. Positioning mechanism; 31. Base; 311. Bottom seat body; 312. Shimming block; 313. Mounting block; 3131. Guide hole; 3132. Mounting chute; 314. Lateral opening; 32. Stop ring positioning seat; 321. Lateral opening; 322. Guide groove; 33. Spring limiting mechanism; 331. Mounting part; 3311. Short shaft; 3312. Rotating shaft; 332. Main body part; 3321. V-shaped limiting surface; 3322. Guiding inclined surface; 3323. Limiting opening; 3324. Guiding opening; 333. Spring; 34. Piston rod positioning seat; 341. Bushing; 342. Piston rod positioning groove; 35. Tightening guide seat; 351. Perforation; 36. Connecting rod; 37. Support; 4. Welding mechanism; 5. Pressing-down mechanism; 51. Pressing-down cylinder; 52. Pressing block; 521. Pressing claw; 522. Positioning hole; 6. Upward pressing mechanism; 7. Stop ring; 8. Piston rod; 9. Frame; 10. Intermediate plate. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] An embodiment of the multi-station shock absorber piston rod stop ring spot welding device provided by the present invention: As Figure 1 , Figure 2 and Figure 3 shown, the multi-station shock absorber piston rod stop ring spot welding device includes a working plate 1, a stepping drive mechanism 2, a positioning mechanism 3, a welding mechanism 4 and a pressing mechanism.

[0029] Among them, as Figure 5 and Figure 6 shown, the working plate 1 is provided with a plurality of loading stations evenly distributed in a circle. In this embodiment, a total of six loading stations are provided, and a positioning mechanism 3 is provided at each loading station. The positioning mechanism 3 is used to position the piston rod 8 and the stop ring 7. It should be noted that the number of loading stations is not limited to six in this application. During actual production, the number is reasonably designed according to the size of the working plate 1. For example, when the working plate 1 is relatively small, three, four, etc. can be set. When the working plate 1 is relatively large, more than seven can be set.

[0030] In this embodiment, as Figure 1 and Figure 5 shown, the stepping drive mechanism 2 adopts a common cam divider in the prior art. The indexing plate 21 of the cam divider is arranged parallel to the working plate 1, and the two are connected by a plurality of columns distributed in a circle. An intermediate plate 10 is also arranged parallel between the indexing plate 21 and the working plate 1. Each column passes through the intermediate plate 10, and the indexing plate 21, the working plate 1 and the intermediate plate 10 are relatively fixed together through a coaxial drive shaft.

[0031] As Figure 8 shown, the positioning mechanism 3 includes a base 31, a stop ring positioning seat 32, a spring limiting mechanism 33, a piston rod positioning seat 34, and a tightening guide seat 35.

[0032] Specifically, the base 31 is a split structure, including a bottom seat body 311, a spacer block 312, and a mounting block 313 that are arranged separately from bottom to top in sequence. Among them, a positioning installation groove is provided on the bottom seat body 311, the spacer block 312 is placed in the positioning installation groove, a bottom fixing hole is provided at the bottom of the bottom seat body 311, and a bolt for fixing the spacer block 312 is inserted through the bottom fixing hole, so as to detachably assemble the spacer block 312 and the bottom seat body 311 together. The spacer block 312 is a stepped structure, and a sliding installation opening is provided on one side thereof, and the mounting block 313 is inserted into the sliding installation opening. A side fixing hole is provided on the side of the spacer block 312 facing away from the sliding installation opening, and a bolt for fixing the mounting block 313 is inserted through the side fixing hole, so as to detachably assemble the mounting block 313 and the spacer block 312 together.

[0033] As Figure 5 and Figure 12 shown, the bottom seat body 311, the spacer block 312, and the mounting block 313 are all provided with a laterally opening 314 that penetrates up and down on the same side. The laterally opening 314 allows the piston rod 8 to be inserted or removed laterally from the base 31. When the above bolts are removed, the spacer block 312 can slide out laterally from the bottom seat body 311, and the mounting block 313 can slide out laterally from the spacer block 312.

[0034] As Figure 12 shown, the stop ring positioning seat 32 is arranged in the laterally opening 314 and assembled in the mounting block 313. An installation chute 3132 adapted to the stop ring positioning seat 32 is provided on the mounting block 313, and the bottom of the installation chute 3132 is used for stop cooperation with the stop ring positioning seat 32 in the vertical direction. The stop ring positioning seat 32 can be quickly positioned and assembled in the mounting block 313 through the installation chute 3132. A laterally opening 321 is provided on the stop ring positioning seat 32. The laterally opening 321 is a U-shaped opening, which has the same orientation as the laterally opening 314 and penetrates up and down with the laterally opening 314; the diameter of the laterally opening 321 is smaller than the minimum diameter of the laterally opening 314. The top surface of the stop ring positioning seat 32 forms a stop positioning surface, and the stop positioning surface is located above the laterally opening 314 and is used for stop cooperation with the stop ring 7. The piston rod 8 can be snapped into the laterally opening 321 from the laterally opening 314, the stop ring 7 is sleeved on the piston rod 8, and slides down to the above stop positioning surface to realize the positioning of the stop ring 7. It should be noted that the diameter of the laterally opening 321 should be larger than the diameter of the part of the piston rod 8 that is snapped in.

[0035] As Figure 8 andFigure 11 As shown, a guide groove 322 extending in the up and down direction is provided on the stopper ring positioning seat 32. A guide hole 3131 corresponding to the guide groove 322 is provided on the mounting block 313. A guide member for extending into the guide groove 322 is inserted into the guide hole 3131, ensuring that the lateral opening 321 on it faces accurately when the stopper ring positioning seat 32 is installed.

[0036] As Figure 9 and Figure 10 As shown, the spring limiting mechanism 33 is arranged below the entire base 31, including two symmetrically arranged spring claws and a spring 333 connected to the same end of the two spring claws. Each spring claw includes a mounting portion 331 and a main body portion 332. The mounting portion 331 is rotationally assembled with the bottom seat body 311 through a rotating shaft 3312. A short shaft 3311 is further provided on the mounting portion 331, and the axis of the short shaft 3311 is perpendicular to the axis of the rotating shaft 3312. The spring 333 is sleeved on the two short shafts 3311 and is fixed to the two mounting portions 331 at both ends respectively. The main body portion 332 is detachably fixed to the mounting portion 331 by bolts. A V-shaped limiting surface 3321 and a guiding inclined surface 3322 are provided on the main body portion 332. In the natural state of the spring 333, a limiting opening 3323 is formed between the two V-shaped limiting surfaces 3321, and the limiting opening 3323 is vertically opposite to the lateral opening 321. The limiting opening 3323 can straighten the piston rod 8, keep the piston rod 8 centered, and prevent the piston rod 8 from tilting. A guiding opening 3324 is formed between the two guiding inclined surfaces 3322. The distance between the guiding inclined surfaces 3322 of the two spring claws decreases gradually in the radial direction of the piston rod 8 from the direction away from the lateral opening 314 towards the direction close to the lateral opening 314, and the minimum diameter of the guiding opening 3324 is smaller than the diameter of the part of the piston rod 8 inserted into the lateral opening 321.

[0037] As Figure 5 As shown, the piston rod positioning seat 34 is located below the spring limiting mechanism 33 and is arranged corresponding to the base 31 one by one. A support 37 is provided on the intermediate disc 10 at the position corresponding to each piston rod positioning seat 34. The piston rod positioning seat 34 is in a T shape, including a large-diameter section located above and a small-diameter section located below. The small-diameter section passes through the support 37 downward, and the large-diameter section is in stop fit with the support 37 in the up and down direction. A piston rod positioning groove 342 for inserting the piston rod 8 and communicating up and down is provided on the large-diameter section and the small-diameter section. A bushing 341 is coaxially provided in the large-diameter section, and an insertion hole for inserting the piston rod 8 is provided on the bushing 341.

[0038] The top - tight guiding seat 35 is located below the piston - rod positioning seat 34 and between the middle disc 10 and the indexing disc 21. The two are connected to the base 31 through multiple connecting rods 36. A perforation 351 coaxial with the piston - rod positioning groove 342 is provided on the top - tight guiding seat 35. According to the length of the piston rod 8, the lower end of the piston rod 8 is inserted into the above - mentioned jack and extends into the piston - rod positioning groove 342.

[0039] As Figure 1 shown, the welding mechanism 4 is installed on the frame 9. In this embodiment, the welding mechanism 4 is a four - point welding mechanism 4, including four welding arms that are pairwise at 90°. Each welding arm is fixedly provided with a spot - welding electrode. A cylinder is provided at the position corresponding to each welding arm on the frame 9. The cylinder is connected to the welding arm to drive the welding arm to move.

[0040] The pressing mechanism is arranged at a position corresponding to the welding mechanism 4. As Figure 2 shown, the pressing mechanism includes a downward - pressing mechanism 5 and an upward - pushing mechanism 6. The downward - pressing mechanism 5 is installed on the frame 9 and is used to press the retaining ring 7 and the piston rod 8 downward. The upward - pushing mechanism 6 is opposite to the downward - pressing mechanism 5 up and down. The output end of the upward - pushing mechanism 6 is used to pass through the perforation 351 on the corresponding top - tight guiding seat 35 to upwardly press the piston - rod positioning seat 34.

[0041] In this embodiment, as Figure 2 and Figure 3 shown, the downward - pressing mechanism 5 includes a downward - pressing cylinder 51 and a pressing block 52 connected to the power output end of the downward - pressing cylinder 51. A positioning hole 522 adapted to the top of the piston rod 8 is provided at the center of the pressing block 52. A plurality of pressing claws 521 for pressing the retaining ring 7 are arranged around the positioning hole 522 on the pressing block 52. The upward - pushing mechanism 6 is a servo electric cylinder. The output rod of the servo electric cylinder is used to pass through the perforation 351 to upwardly press the piston - rod positioning seat 34. Under the pushing action of the servo electric cylinder, the piston - rod positioning seat 34 can move up and down until the piston - rod positioning seat 34 is tightly pressed. The function of the servo electric cylinder is to ensure the accurate spot - welding position of the retaining ring 7.

[0042] Before the multi - station shock - absorber piston - rod retaining - ring spot - welding device of the present invention is used, the piston rod 8 and the retaining ring 7 can be pre - positioned and placed through the positioning mechanism 3 at each loading station. Then, through the cam divider rotating a set angle (60° in this embodiment) each time, the loading stations are successively rotated to the welding mechanism 4. After pressing the piston rod 8 and the retaining ring 7 through the downward - pressing mechanism 5 and the upward - pushing mechanism 6, the welding mechanism 4 can be used to perform spot - welding operations on the retaining ring 7.

[0043] The present invention adopts the multi - station working disk 1 and combines with the step - by - step driving mechanism 2, which can realize continuous welding operations. Moreover, the positioning of the piston rod 8 and the retaining ring 7 is fast, and the disassembly and assembly are convenient, greatly improving the welding efficiency.

[0044] In other embodiments, the stepping drive mechanism may also employ a hollow rotary table.

[0045] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-station spot welding device for the stop ring of a shock absorber piston rod, characterized in that, It includes a working disk, a step-by-step driving mechanism, a positioning mechanism, a welding mechanism and a pressing mechanism; A plurality of feeding stations evenly distributed in a circumferential manner are provided on the working disk, and the positioning mechanism is arranged at each feeding station for positioning the piston rod and the stop ring; The step-by-step driving mechanism is in transmission connection with the working disk and is used to drive the working disk to rotate step by step so that the feeding stations are successively rotated to the welding mechanism; The pressing mechanism is arranged at the welding mechanism and is used to press the piston rod and the stop ring on the feeding station rotated to the welding mechanism; The welding mechanism is used to weld the piston rod and the stop ring positioned at the feeding station.

2. The multi-station shock absorber piston rod stop ring spot welding device according to claim 1, characterized in that The step-by-step driving mechanism is a cam divider.

3. The multi-station spot welding device for the shock absorber piston rod retaining ring according to claim 1, characterized in that, The welding mechanism is a multi-point welding mechanism.

4. The multi-station shock absorber piston rod stop ring spot welding device according to any one of claims 1-3, characterized in that The positioning mechanism includes a base, a stop ring positioning seat, a spring limiting mechanism and a piston rod positioning seat; a laterally opened hole extending in the vertical direction is provided on the base, the stop ring positioning seat is arranged in the laterally opened hole, the stop ring positioning seat has a lateral opening and a stop positioning surface, the stop positioning surface is located above the laterally opened hole and is used for stop cooperation with the stop ring, the lateral opening penetrates through the laterally opened hole vertically and the diameter of the lateral opening is not larger than the minimum diameter of the laterally opened hole for the piston rod to be inserted and taken out along its radial direction; the spring limiting mechanism includes two spring claws and a spring connected to the same end of the two spring claws, each spring claw is rotatably assembled on the base, in the natural state of the spring, a guiding opening and a limiting opening are formed between the two spring claws, the limiting opening is vertically opposite to the lateral opening, and the piston rod is placed at the lateral opening and the limiting opening through the guiding opening; the piston rod positioning seat is provided with a piston rod positioning groove for the piston rod to be inserted, and the top of the piston rod positioning seat is used for stop cooperation with the step on the piston rod.

5. The multi-station shock absorber piston rod stop ring spot welding device according to claim 4, characterized in that Each spring claw has a V-shaped limiting surface and a guiding inclined surface, and the distance between the guiding inclined surfaces of the two spring claws in the radial direction of the piston rod gradually decreases from the direction away from the laterally opened hole to the direction close to the laterally opened hole, and the minimum diameter of the guiding opening is smaller than the diameter of the part of the piston rod placed in the lateral opening.

6. The multi-station shock absorber piston rod stop ring spot welding device according to claim 5, characterized in that, The spring claw includes a mounting part and a main body part, the V-shaped limiting surface and the guiding inclined surface are both located on the main body part, the mounting part is rotatably assembled with the base, and the spring is fixed between the mounting parts of the two spring claws; the main body part and the mounting part are detachably connected.

7. The multi-station shock absorber piston rod stop ring spot welding device according to claim 6, characterized in that, The stop ring positioning seat is provided with a guiding groove extending in the vertical direction, the base is provided with a guiding hole corresponding to the guiding groove, and a guiding piece for extending into the guiding groove is arranged in the guiding hole.

8. The multi-station shock absorber piston rod stop ring spot welding device according to claim 4, characterized in that The height of the piston rod positioning seat is adjustable, and the positioning mechanism further includes a top pressing guiding seat located below the piston rod positioning seat, the top pressing guiding seat is connected with the base, and a through hole coaxial with the piston positioning groove is formed in the top pressing guiding seat.

9. The multi-station shock absorber piston rod stop ring spot welding device according to claim 8, characterized in that, The pressing mechanism includes a downward pressing mechanism and an upward top pressing mechanism, the downward pressing mechanism is used to press the stop ring and the piston rod downward, and the output end of the upward top pressing mechanism is used to pass through the through hole to upwardly press the piston rod positioning seat.

10. The multi-station shock absorber piston rod stop ring spot welding device according to claim 9, characterized in that, The pressing mechanism includes a pressing cylinder and a pressing block connected to the power output end of the pressing cylinder. A positioning hole adapted to the top of the piston rod is provided at the center of the pressing block, and a plurality of pressing claws for pressing the retaining ring are arranged around the positioning hole on the pressing block; the upward pushing mechanism is a servo electric cylinder, and the output rod of the servo electric cylinder is used to pass through the perforation to upwardly push and tighten the piston rod positioning seat.

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