Multi-station shock absorber piston rod stop ring spot welding device

Abstract

The utility model 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, a positioning mechanism, a welding mechanism and a pressing mechanism. A positioning mechanism is arranged at each feeding station and is used for positioning a piston rod and a 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] This utility model belongs to the technical field of shock absorber components, specifically relating to a spot welding device for the piston rod stop ring of a multi-station shock absorber. Background Technology

[0002] The main function of the retaining 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 retaining ring and the piston rod, as well as the surface quality of the piston rod, directly affect the performance of the shock absorber.

[0003] The damper retaining ring is welded to the damper piston rod. Existing damper retaining ring welding devices, such as the automatic spot welding retaining ring device for dampers disclosed in Chinese Utility Model Patent No. CN213105044U, include a horizontally arranged equipment connecting plate, a moving module on the top of a floating base plate, the moving module including an adjusting screw and a guide rod, a slider on the moving module, a rotary cylinder on the slider, the rotary cylinder's rotating disk being arranged to the left, a rotary cylinder connecting block on the left side of the rotary cylinder's rotating disk, a clamping cylinder fixed on the left side of the rotary cylinder connecting block, the clamping jaws of the clamping cylinder being arranged to the left, a retaining ring positioning block vertically upwards on the left side of the top surface of the floating base plate, an upper electrode on the top of the retaining ring being positioned opposite each other, a lower electrode on the bottom of the retaining ring being positioned opposite each other, the upper electrode and the retaining ring being spaced apart, and the lower electrode and the retaining ring being spaced apart.

[0004] The aforementioned automatic spot welding retaining ring device for vibration dampers can reliably position and weld the piston rod and retaining ring. However, after each welding is completed, the piston rod and retaining ring need to be removed together, and then the piston rod and retaining ring need to be repositioned and positioned. During this process, the welding device is idle and cannot be effectively utilized, resulting in low welding efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a spot welding device for the piston rod stop ring of a multi-station vibration damper, so as to solve the technical problem of low welding efficiency of existing spot welding devices for vibration dampers stop rings.

[0006] To solve the above problems, the present invention provides a spot welding device for the piston rod stop ring of a multi-station vibration damper, which adopts the following technical solution:

[0007] A multi-station vibration damper piston rod stop ring spot welding device includes a working plate, a stepping drive mechanism, a positioning mechanism, a welding mechanism, and a clamping mechanism;

[0008] The working disc has multiple feeding stations evenly distributed in a circle. Each feeding station is equipped with a positioning mechanism for positioning the piston rod and the stop ring. The stepping drive mechanism is connected to the working disc and drives the working disc to rotate step by step so that each feeding station rotates to the welding mechanism. The clamping mechanism is located at the welding mechanism and clamps the piston rod and the stop ring at the feeding station that has rotated to the welding mechanism. The welding mechanism is used to weld the piston rod and the stop ring at the feeding station after they have been positioned.

[0009] The beneficial effects of this utility model are as follows: In use, a piston rod and a stop ring can be positioned at each loading station. A stepping drive mechanism is used to rotate the piston rod and stop ring at each loading station to the welding mechanism one by one, realizing continuous welding operation and improving welding efficiency. In addition, during spot welding, the piston rod and stop ring that have been welded can be removed from the corresponding loading station and the piston rod and stop ring to be welded can be placed, so that there is always a piston rod and stop ring at each loading station. Compared with the prior art, the welding efficiency is greatly improved.

[0010] Furthermore, the stepping drive mechanism is a cam divider.

[0011] Beneficial effects: The cam divider features high-precision indexing and positioning, high rigidity and impact resistance, efficient transmission and low wear, and a compact structure. In addition, it is an existing device that can be directly purchased and used, and is easy to install.

[0012] Furthermore, the welding mechanism is a multi-point welding mechanism.

[0013] Beneficial effects: It can complete the work of multiple welding points at one time, which improves welding efficiency.

[0014] Furthermore, the positioning mechanism includes a base, a stop ring positioning seat, a spring limiting mechanism, and a piston rod positioning seat. The base has a lateral opening extending vertically. The stop ring positioning seat is disposed within the lateral opening and has a lateral opening and a stop positioning surface. The stop positioning surface is located above the lateral opening and is used to stop and cooperate with the stop ring. The lateral opening is vertically connected to the lateral opening, and the diameter of the lateral opening is not greater than the minimum diameter of the lateral opening, allowing the piston rod to be inserted and removed radially. The spring limiting mechanism includes two pawls and a spring connected to the same end of the two pawls. Each pawl is rotatably mounted on the base. In its natural state, the spring forms a guide port and a limiting port between the two pawls. The limiting port is vertically opposite to the lateral opening, and the piston rod is inserted into the lateral opening and the limiting port through the guide port. The piston rod positioning seat has a piston rod positioning groove for piston rod insertion, and the top of the piston rod positioning seat is used to stop and cooperate with the step on the piston rod.

[0015] Beneficial effects: During use, the piston rod with the stop ring fitted is inserted from the guide port through the lateral opening into the position of the limiting port and the lateral opening. The lower end of the piston rod is inserted into the piston rod positioning seat, and the step of the piston rod makes stop contact with the piston rod positioning seat. The stop ring is positioned on the stop ring positioning seat through the stop positioning surface, realizing rapid positioning of the piston rod and the stop ring, improving the positioning efficiency of the piston rod and the stop ring. After welding is completed, simply open the guide port and pull the bottom end of the piston rod out of the piston rod positioning seat. The piston rod and the stop ring can then be quickly pulled out from the lateral opening. The entire positioning and disassembly process is simple and quick, ensuring welding efficiency.

[0016] Furthermore, each pawl has a V-shaped limiting surface and a guide ramp. The distance between the guide ramps of the two pawls gradually decreases in the radial direction of the piston rod from the direction away from the lateral opening to the direction closer to the lateral opening. The minimum diameter of the guide opening is smaller than the diameter of the piston rod inserted into the lateral opening.

[0017] Beneficial effects: The V-shaped limiting surface facilitates the centering of the piston rod and prevents it from tilting when the working disc rotates; when the piston rod is inserted from the guide port, it will squeeze the two spring claws, causing them to open and then enter the limiting port and the side opening through the guide port, making operation more convenient.

[0018] Furthermore, the spring claw includes a mounting part and a main body part. The V-shaped limiting surface and the guide slope 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.

[0019] Beneficial effects: When the main body is damaged, it can be removed and replaced from the mounting part without replacing the entire spring limiting mechanism; in addition, different sizes of main bodies can be replaced to limit piston rods of different diameters.

[0020] Furthermore, the stop ring positioning seat is provided with a guide groove extending in the vertical direction, and the base is provided with a guide hole corresponding to the guide groove, and a guide member for extending into the guide groove is inserted into the guide hole.

[0021] Beneficial effect: The guide ensures the correct orientation of the lateral opening, facilitating the subsequent positioning and placement of the piston rod.

[0022] Furthermore, the height of the piston rod positioning seat is adjustable, and the positioning mechanism also includes a clamping guide seat located below the piston rod positioning seat. The clamping guide seat is connected to the base, and a through hole coaxial with the piston positioning groove is provided on the clamping guide seat. The through hole is used for the output end of the clamping mechanism to pass through, so that the piston rod positioning seat clamps the piston rod under the action of the clamping mechanism.

[0023] Beneficial effect: It helps to achieve the clamping of the piston rod, thereby ensuring that the piston rod does not easily move during spot welding.

[0024] Furthermore, the clamping mechanism includes a pressing mechanism and an lifting mechanism. The pressing mechanism is used to press the stop ring and piston rod downwards, and the output end of the lifting mechanism is used to pass through the through hole to press the piston rod positioning seat upwards.

[0025] Beneficial effect: It can press the piston rod and the retaining ring from both the top and bottom directions to ensure welding quality.

[0026] Furthermore, the pressing mechanism includes a pressing cylinder and a pressing block connected to the power output end of the pressing cylinder. The center of the pressing block is provided with a positioning hole that matches the top of the piston rod. Multiple pressing claws for pressing the stop ring are arranged around the positioning hole on the pressing block. The lifting mechanism is a servo electric cylinder. The output rod of the servo electric cylinder is used to pass through the through hole to press the piston rod positioning seat upward.

[0027] Beneficial effects: It can quickly tighten the piston rod and the retaining ring, and the pressure block can be used for multiple purposes, saving costs. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of a multi-station vibration damper piston rod stop ring spot welding device according to the present invention;

[0029] Figure 2 for Figure 1 The main view;

[0030] Figure 3 for Figure 1 Side view;

[0031] Figure 4 for Figure 1 Top view;

[0032] Figure 5 This is a schematic diagram showing the assembly between the working plate, the stepper drive mechanism, and the positioning mechanism.

[0033] Figure 6 for Figure 5 Top view;

[0034] Figure 7 This is a schematic diagram of the structure of the pressure block;

[0035] Figure 8 This is a schematic diagram of the positioning mechanism;

[0036] Figure 9 This is a cross-sectional view of the positioning mechanism;

[0037] Figure 10 This is a schematic diagram of the spring limiting mechanism;

[0038] Figure 11 A schematic diagram of the stop ring positioning seat;

[0039] Figure 12 This is a structural diagram of the base.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Working plate; 2. Stepper drive mechanism; 21. Indexing plate; 3. Positioning mechanism; 31. Base; 311. Bottom seat; 312. Elevating block; 313. Mounting block; 3131. Guide hole; 3132. Mounting groove; 314. Side opening; 32. Stop ring positioning seat; 321. Side opening; 322. Guide groove; 33. Spring limiting mechanism; 331. Mounting part; 3311. Short shaft; 3312. Rotating shaft; 332. Main body; 3321. V-shaped limit. Surface; 3322, Guide slope; 3323, Limiting port; 3324, Guide port; 333, Spring; 34, Piston rod positioning seat; 341, Bushing; 342, Piston rod positioning groove; 35, Tightening guide seat; 351, Through hole; 36, Connecting rod; 37, Support; 4, Welding mechanism; 5, Pressing mechanism; 51, Pressing cylinder; 52, Pressing block; 521, Pressing claw; 522, Positioning hole; 6, Top mechanism; 7, Stop ring; 8, Piston rod; 9, Frame; 10, Intermediate plate. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0043] An embodiment of the multi-station vibration damper piston rod stop ring spot welding device provided by this utility model:

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, a multi-station vibration damper 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 clamping mechanism.

[0045] Among them, such as Figure 5 and Figure 6 As shown, the working disc 1 has multiple feeding stations evenly distributed in a circle. In this embodiment, there are six feeding stations in total, and each feeding station is equipped with a positioning mechanism 3. 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 feeding stations is not limited to the six in this application. In actual production, the number can be reasonably designed according to the size of the working disc 1. For example, if the working disc 1 is small, three or four stations can be set, and if the working disc 1 is large, seven or more stations can be set.

[0046] In this embodiment, as Figure 1 and Figure 5 As shown, the stepper drive mechanism 2 adopts a cam divider commonly used in the prior art. The indexing plate 21 of the cam divider is arranged in parallel with the working plate 1, and the two are connected by multiple circumferentially distributed columns. An intermediate plate 10 is also arranged in parallel between the indexing plate 21 and the working plate 1. Each column passes through the intermediate plate 10. The indexing plate 21, the working plate 1, and the intermediate plate 10 are relatively fixed together by a coaxially arranged transmission shaft.

[0047] like Figure 8 As 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 clamping guide seat 35.

[0048] Specifically, the base 31 has a split structure, comprising a bottom seat 311, a raised block 312, and a mounting block 313 arranged sequentially from bottom to top. The bottom seat 311 has a positioning mounting groove, into which the raised block 312 is placed. The bottom of the bottom seat 311 has a bottom fixing hole, through which a bolt for fixing the raised block 312 passes, thus detachably assembling the raised block 312 and the bottom seat 311. The raised block 312 has a stepped structure with a sliding mounting opening on one side, into which the mounting block 313 is inserted. The raised block 312 has a side fixing hole on the side opposite to the sliding mounting opening, through which a bolt for fixing the mounting block 313 passes, thus detachably assembling the mounting block 313 and the raised block 312.

[0049] like Figure 5 and Figure 12 As shown, the bottom base 311, the shim block 312, and the mounting block 313 all have through-holes 314 on the same side, allowing the piston rod 8 to be inserted into or removed from the side of the base 31. When the aforementioned bolts are removed, the shim block 312 can slide laterally out of the bottom base 311, and the mounting block 313 can slide laterally out of the shim block 312.

[0050] like Figure 12As shown, the stop ring positioning seat 32 is disposed in the lateral opening 314 and assembled in the mounting block 313. The mounting block 313 has an mounting groove 3132 adapted to the stop ring positioning seat 32. The bottom of the mounting groove 3132 is used to stop 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 mounting groove 3132. The stop ring positioning seat 32 has a lateral opening 321, which is U-shaped and faces the same direction as the lateral opening 314, and is vertically connected to the lateral opening 314; the diameter of the lateral opening 321 is smaller than the minimum diameter of the lateral opening 314. The top surface of the stop ring positioning seat 32 forms a stop positioning surface, which is located above the lateral opening 314 and is used to stop the stop ring 7. The piston rod 8 can be inserted into the side opening 321 through the side opening 314. The stop ring 7 is fitted onto the piston rod 8 and slides down to the aforementioned stop positioning surface, thereby positioning the stop ring 7. It should be noted that the diameter of the side opening 321 is larger than the diameter of the part of the piston rod 8 that is inserted.

[0051] like Figure 8 and Figure 11 As shown, the stop ring positioning seat 32 is provided with a guide groove 322 extending in the vertical direction, and the mounting block 313 is provided with a guide hole 3131 corresponding to the guide groove 322. A guide member for extending into the guide groove 322 is provided in the guide hole 3131 to ensure that the side opening 321 on the stop ring positioning seat 32 is oriented accurately when it is installed.

[0052] like Figure 9 and Figure 10As shown, the spring limiting mechanism 33 is located 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 part 331 and a main body 332. The mounting part 331 is rotatably assembled with the bottom seat 311 via a rotating shaft 3312. The mounting part 331 also has a short shaft 3311, the axis of which is perpendicular to the axis of the rotating shaft 3312. The spring 333 is sleeved on the two short shafts 3311, and its two ends are fixed to the two mounting parts 331 respectively. The main body 332 is detachably fixed to the mounting part 331 by bolts. The main body 332 has a V-shaped limiting surface 3321 and a guide slope 3322. In its natural state, the spring 333 forms a limiting opening 3323 between the two V-shaped limiting surfaces 3321, and the limiting opening 3323 is vertically opposite to the side opening 321. The limiting port 3323 can straighten the piston rod 8, keeping it centered and preventing it from tilting. A guide opening 3324 is formed between the two guide ramps 3322. The distance between the guide ramps 3322 of the two spring claws gradually decreases radially from the direction away from the lateral opening 314 towards the direction closer to the lateral opening 314. The minimum diameter of the guide opening 3324 is smaller than the diameter of the portion of the piston rod 8 that is inserted into the lateral opening 321.

[0053] like Figure 5 As shown, the piston rod positioning seat 34 is located below the spring limiting mechanism 33 and is arranged in a one-to-one correspondence with the base 31. A support 37 is provided on the intermediate plate 10 corresponding to the position of each piston rod positioning seat 34. The piston rod positioning seat 34 is T-shaped, including a large-diameter section at the top and a small-diameter section at the bottom. The small-diameter section passes downward through the support 37, and the large-diameter section and the support 37 are engaged in a vertical stop fit. Piston rod positioning grooves 342, which are vertically connected, are provided on both the large-diameter and small-diameter sections for the piston rod 8 to be inserted. A bushing 341 is coaxially provided inside the large-diameter section, and the bushing 341 has an insertion hole for the piston rod 8 to be inserted.

[0054] The clamping guide seat 35 is located below the piston rod positioning seat 34 and between the intermediate plate 10 and the indexing plate 21. The two are connected to the base 31 by multiple connecting rods 36. The clamping guide seat 35 has a through hole 351 coaxial with the piston rod positioning groove 342. Depending on the length of the piston rod 8, the lower end of the piston rod 8 is inserted into the aforementioned through hole and extends into the piston rod positioning groove 342.

[0055] like Figure 1 As shown, the welding mechanism 4 is mounted on the frame 9. In this embodiment, the welding mechanism 4 is a four-point welding mechanism, including four welding arms that are arranged at 90° angles to each other. Each welding arm is equipped with a spot welding electrode. A cylinder is provided on the frame 9 corresponding to the position of each welding arm. The cylinder is connected to the welding arm and drives the welding arm to move.

[0056] The clamping mechanism is positioned corresponding to welding mechanism 4. For example... Figure 2 As shown, the clamping mechanism includes a lower pressing mechanism 5 and an upper pressing mechanism 6. The lower pressing mechanism 5 is mounted on the frame 9 and is used to press down the stop ring 7 and the piston rod 8. The upper pressing mechanism 6 is vertically opposite to the lower pressing mechanism 5. The output end of the upper pressing mechanism 6 is used to pass through the through hole 351 on the corresponding pressing guide seat 35 to press up the piston rod positioning seat 34.

[0057] In this embodiment, as Figure 2 and Figure 3 As shown, the pressing mechanism 5 includes a pressing cylinder 51 and a pressing block 52 connected to the power output end of the pressing cylinder 51. The center of the pressing block 52 is provided with a positioning hole 522 that matches the top of the piston rod 8. Multiple pressing claws 521 for pressing the stop ring 7 are arranged around the positioning hole 522 on the pressing block 52. The lifting mechanism 6 is a servo electric cylinder. The output rod of the servo electric cylinder is used to pass through the through hole 351 to press the piston rod positioning seat 34 upward. Under the pushing action of the servo electric cylinder, the piston rod positioning seat 34 can move up and down until it is pressed against the piston rod positioning seat 34. The function of the servo electric cylinder is to ensure the accurate spot welding position of the stop ring 7.

[0058] Before use, the multi-station vibration damper piston rod stop ring spot welding device of this utility model can be positioned and placed at each loading station by the positioning mechanism 3. Then, by rotating the cam divider by a set angle (60° in this embodiment) each time, the loading station is rotated to the welding mechanism 4 one by one. After the piston rod 8 and the stop ring 7 are pressed by the pressing mechanism 5 and the lifting mechanism 6, the stop ring 7 can be spot welded by the welding mechanism 4.

[0059] This utility model adopts a multi-station work plate 1, combined with a stepper drive mechanism 2, which can realize continuous welding operations. Furthermore, the piston rod 8 and the stop ring 7 are quickly positioned and easy to disassemble and assemble, which greatly improves welding efficiency.

[0060] In other embodiments, the stepper drive mechanism may also employ a hollow rotary table.

[0061] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

[0062] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-station shock absorber piston rod retainer ring spot welding device characterized by, It includes a working disc, a stepper drive mechanism, a positioning mechanism, a welding mechanism, and a clamping mechanism; The working plate is provided with multiple feeding stations evenly distributed in a circle. Each feeding station is provided with the positioning mechanism, which is used to position the piston rod and the stop ring. The stepper drive mechanism is connected to the working disc and is used to drive the working disc to rotate in a stepping manner so that the loading station rotates to the welding mechanism one by one. The clamping mechanism is located at the welding mechanism and is used to clamp the piston rod and the stop ring that have rotated to the loading station at the welding mechanism. The welding mechanism is used to weld the piston rod and stop ring after they have been positioned at the loading station.

2. The multi-station vibration damper piston rod stop ring spot welding device according to claim 1, characterized in that, The stepper drive mechanism is a cam divider.

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

4. A multi-station piston rod stop washer spot welding apparatus 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. The base has a lateral opening extending vertically. The stop ring positioning seat is located within the lateral opening and has a lateral opening and a stop positioning surface. The stop positioning surface is located above the lateral opening and is used to engage with the stop ring. The lateral opening is vertically connected to the lateral opening, and the diameter of the lateral opening is not greater than the minimum diameter of the lateral opening, allowing the piston rod to be inserted and removed radially. The spring limiting mechanism includes two pawls and a spring connected to the same end of the two pawls. Each pawl is rotatably mounted on the base. In its natural state, the spring forms a guide opening and a limiting opening between the two pawls. The limiting opening is vertically opposite to the lateral opening, and the piston rod is inserted into the lateral opening and the limiting opening through the guide opening. The piston rod positioning seat has a piston rod positioning groove for insertion, and the top of the piston rod positioning seat engages with a step on the piston rod for stop engagement.

5. A multi-station shock absorber piston rod check ring spot welding device according to claim 4, characterized in that Each pawl has a V-shaped limiting surface and a guide ramp. The distance between the guide ramps of the two pawls gradually decreases in the radial direction of the piston rod from the direction away from the lateral opening to the direction closer to the lateral opening. The minimum diameter of the guide opening is smaller than the diameter of the piston rod inserted into the lateral opening.

6. A multi-station shock absorber piston rod check 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 guide slope are both located on the main body part. The mounting part is rotatably assembled with the base. 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. A multi-station piston rod shim point welding apparatus as defined in claim 6, wherein, The stop ring positioning seat is provided with a guide groove extending in the vertical direction, and the base is provided with a guide hole corresponding to the guide groove, and a guide member for extending into the guide groove is inserted into the guide hole.

8. A multi-station shock absorber piston rod check ring spot welding apparatus as defined in claim 4, wherein, The height of the piston rod positioning seat is adjustable. The positioning mechanism also includes a clamping guide seat located below the piston rod positioning seat. The clamping guide seat is connected to the base and has a through hole coaxial with the piston positioning groove.

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

10. A multi-station shock absorber piston rod check ring spot welding apparatus as defined in claim 9, wherein, The pressing mechanism includes a pressing cylinder and a pressing block connected to the power output end of the pressing cylinder. The center of the pressing block is provided with a positioning hole that matches the top of the piston rod. Multiple pressing claws for pressing the stop ring are arranged around the positioning hole on the pressing block. The lifting mechanism is a servo electric cylinder. The output rod of the servo electric cylinder is used to pass through the through hole to press the piston rod positioning seat upward.

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