Sealing ring assembly device and assembly method for shock absorber valve body

Abstract

The application discloses a kind of shock absorber valve body's sealing ring assembly device and assembly method, assembly device includes carrier assembly, including and setting placement seat one and placement seat two side by side, placement seat one is used to carry the valve body body with valve stem inserted, channel one is opened in placement seat two, placement rod is arranged in placement seat two and can be moved up and down along channel one, placement rod includes the placement part that one O type sealing ring is sleeved and extends out placement seat two partially upwards, the diameter of placement part is greater than the diameter of O type sealing ring.Top lifting assembly is located below carrier, and top lifting assembly includes a lifting rod that can be inserted into placement seat one and lift valve stem upwards.Assembly mechanism, including being located above carrier assembly and can reciprocate along the direction of placement seat one and placement seat two arrangement direction transfer assembly, transfer assembly includes the transfer rod and push plate that can be synchronously moved up and down, push plate can also be moved up and down relative to transfer rod.The device can be used for the accurate assembly of small size O type sealing ring.

Description

Technical Field

[0001] This invention relates to the field of valve body processing equipment technology, and in particular to a sealing ring assembly device and assembly method for shock absorber valve bodies. Background Technology

[0002] See appendix Figure 1 As shown, the shock absorber valve body includes a valve body 11 and a valve stem 12 that can move up and down within the valve body 11. The valve stem 12 has an annular sealing groove 121 on its circumference. An O-ring 13 needs to be fitted into the sealing groove 121 to achieve a self-sealing effect. During installation, the O-ring is expanded beyond the end of the valve stem and then fitted into the sealing groove. Because the shape of the shock absorber valve body is becoming increasingly smaller, the size of the O-ring is also decreasing, with some rings having a diameter of only 1.6mm. This poses a significant challenge to installation. Manual assembly results in a high product defect rate, limited assembly efficiency, is time-consuming and labor-intensive, and greatly increases production costs, making it difficult to meet the needs of automated assembly and intense market competition. Directly using a claw-type sealing ring assembly device is not suitable for assembling small-sized sealing rings and cannot meet assembly requirements. Therefore, a sealing ring assembly device is needed that can be used for assembling small-sized sealing rings. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a sealing ring assembly device and assembly method for a shock absorber valve body, which can be used for the precise assembly of small-sized O-ring seals.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: a sealing ring assembly device for a shock absorber valve body, the assembly device comprising:

[0005] The carrier assembly includes a first placement seat and a second placement seat arranged side by side. The first placement seat is used to support a valve body body with a valve stem inserted into it. The second placement seat has a channel. The second placement seat has a placement rod that can move up and down along the channel. The placement rod includes a placement part that extends upward out of the second placement seat and is fitted with an O-ring. The diameter of the placement part is larger than the diameter of the O-ring.

[0006] A lifting assembly, located below the carrier, includes a lifting rod capable of being inserted upward into the placement seat and lifting the valve stem upward;

[0007] The assembly mechanism includes a transfer assembly located above the carrier assembly and capable of reciprocating along the arrangement direction of the first and second placement seats. The transfer assembly includes a transfer rod and a push plate capable of moving up and down synchronously. The push plate can also move up and down relative to the transfer rod.

[0008] When the adapter rod moves to the top of the second placement seat and is coaxial with the placement rod, the downward-moving portion of the adapter rod inserts into the first channel and pushes the placement rod downward relative to the second placement seat. The second placement seat pushes the O-ring seal on the placement rod onto the adapter rod. When the adapter rod moves to the top of the first placement seat and is coaxial with the valve stem, after the adapter rod moves downward and abuts against the valve stem, the push plate moves downward relative to the adapter rod to push the O-ring seal on the adapter rod downward onto the valve stem.

[0009] The beneficial effects of this invention are as follows:

[0010] The O-ring and valve body are positioned using the carrier assembly. Instead of using a claw structure to open the O-ring, an adapter rod is used to transfer it. The adapter rod pushes the placement rod downwards, transferring the O-ring from the placement section to the adapter rod. After the placement rod and adapter rod are aligned vertically, the adapter rod moves downwards until the O-ring on the placement section abuts against the upper surface of the second placement seat. At this point, the upper surface of the second placement seat pushes the O-ring off the placement rod and onto the adapter rod. The adapter rod then moves to align with the valve stem. After the adapter rod and the lifted valve stem abut against each other, a push plate moves downwards, pushing the O-ring on the adapter rod onto the valve stem. The O-ring is first evenly spread on the placement section of the placement rod, then transferred to the adapter rod, and finally pushed onto the valve stem by the push plate. Throughout this process, the O-ring is subjected to uniform force, preventing localized compression deformation. The O-ring is transferred by scraping and pushing, rather than clamping or pulling, to ensure uniform deformation of the O-ring, better coaxiality with the valve stem and proper fitting, resulting in a higher success rate of transfer.

[0011] For O-rings with a diameter of only a few millimeters, the assembly device can complete precise assembly in a confined space by extending the adapter rod and pushing out the push plate.

[0012] Furthermore, the second placement seat has a channel for the placement part to slide. The diameter of the channel is smaller than the outer diameter of the O-ring on the placement part and the diameter of the adapter rod. The O-ring will not enter the channel, but will be blocked by the upper surface of the second placement seat. When the placement rod continues to move down, the second placement seat can limit the position of the O-ring. At the same time, the diameter of the channel needs to meet the insertion of the lower end of the adapter rod.

[0013] The push plate has a through hole for the adapter rod to pass through. The diameter of the through hole is larger than the diameter of the adapter rod but smaller than the outer diameter of the O-ring on the adapter rod. The adapter rod and the push plate can slide relative to each other, and at the same time, the O-ring on the adapter rod can be pushed to slide.

[0014] Furthermore, the diameter of the placement part is smaller than the diameter of the adapter rod, and the difference is no greater than 1 mm; the diameter of the adapter rod is smaller than the diameter of the valve body, and the difference is no greater than 1 mm. According to the O-ring assembly process, the placement part, adapter rod, and valve stem are arranged in a gradually increasing diameter configuration to facilitate the transfer and assembly of the O-ring, while also simplifying the loading of the O-ring.

[0015] Furthermore, the placement rod also includes a frustum-shaped portion located at the top of the placement part. The large circular surface of the frustum-shaped portion aligns with the placement part and has the same diameter. The frustum-shaped portion forms a constricted structure, facilitating the fitting of the O-ring onto the placement rod. The frustum-shaped portion gradually expands the O-ring, allowing it to fit onto the placement part in an open state, ensuring that the O-ring will not detach from the placement rod.

[0016] The adapter rod has a groove corresponding to the frustum portion from its lower surface inwards, and the frustum portion can be completely embedded in the groove. The groove improves the stability of the connection between the adapter rod and the placement rod, reduces the relative shaking that occurs when the adapter rod and the placement rod are connected, and improves the stability of the O-ring seal on the placement rod when it is transferred to the adapter rod; at the same time, when transferring the O-ring seal, the groove can cover the frustum portion, ensuring that the O-ring seal on the placement rod can be pushed onto the adapter rod.

[0017] Furthermore, the lower end region of the adapter rod is provided with a circumferential positioning groove, and a portion of the O-ring is embedded in the positioning groove. The positioning groove defines the position of the O-ring, making it difficult for the O-ring to slide on the adapter rod, thus ensuring the stability of the adapter rod in transporting the O-ring.

[0018] Furthermore, the second placement seat is provided with an elastic element that limits the placement rod to a first position where it extends partially upward beyond the second placement seat. The adapter rod can push the placement rod downward against the elastic force of the elastic element. The elastic element is used to limit the initial position of the placement rod and allows the placement rod to move up and down.

[0019] Furthermore, the second placement seat is also provided with a guide channel located below the first channel. The placement rod includes a guide portion located below the placement portion, and the elastic element is a spring sleeved on the guide portion. A step is provided in the guide channel, and a protruding ring is provided on the guide portion. When the upper surface of the protruding ring abuts against the step, the spring is in a natural state or a compressed state, and the placement rod is in the first position.

[0020] Furthermore, the adapter assembly includes a first lifting drive component and a first lifting plate that moves up and down under the drive of the first lifting drive component. A second lifting drive component and the adapter rod are fixed to the first lifting plate. A push plate, sleeved on the outside of the adapter rod, is fixed to the output end of the second lifting drive component. The structure of the first lifting drive component, the first lifting plate, and the second lifting drive component enables synchronous and relative lifting of the adapter rod and the lifting plate.

[0021] Furthermore, it also includes an air extraction assembly. Placement seat one and placement seat two are jointly fixed to a connecting seat. Both the connecting seat and placement seat one have an air extraction channel communicating with the valve body within placement seat one. The air extraction assembly provides negative pressure to this channel. On one hand, the air extraction assembly removes foreign objects from the valve body, ensuring the valve stem can move up and down within the valve body. On the other hand, it positions the valve body within placement seat one, preventing the valve body from detaching from placement seat one when the lifting assembly lifts the valve stem.

[0022] This invention also discloses a method for assembling a sealing ring for a shock absorber valve body. Based on the above-mentioned assembly device, the assembly method includes:

[0023] Place the valve body with the valve stem inserted into it into the placement seat, and put the O-ring on the placement part of the placement rod;

[0024] The lifting rod of the lifting assembly moves upward, inserts into the placement seat, and lifts the valve rod inside the valve body upward;

[0025] While the lifting assembly is lifting, the adapter assembly moves horizontally to a position where the adapter rod and the placement rod are coaxial. The adapter rod moves downward, and after the adapter rod and the placement rod abut against each other, the placement rod is pushed downward relative to the second placement seat until the lower end of the adapter rod is inserted into the second placement seat. The upper surface of the second placement seat pushes the O-ring on the placement rod onto the adapter rod.

[0026] The adapter assembly moves upward to reset and then horizontally to a position where the adapter rod and the valve stem are coaxial. After the adapter rod moves downward and abuts against the valve stem, the push plate moves downward relative to the adapter rod to push the O-ring on the adapter rod downward onto the valve stem. Attached Figure Description

[0027] Figure 1 This is an exploded view of the shock absorber valve body in an embodiment of the present invention;

[0028] Figure 2 This is a side view of the assembly device in an embodiment of the present invention;

[0029] Figure 3This is a three-dimensional structural diagram of the assembly device in an embodiment of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the vehicle component in an embodiment of the present invention;

[0031] Figure 5 This is a cross-sectional view of the vehicle assembly in an embodiment of the present invention;

[0032] Figure 6 This is a cross-sectional view of the placement seat two in an embodiment of the present invention;

[0033] Figure 7 This is a three-dimensional structural diagram of the assembly mechanism in an embodiment of the present invention;

[0034] Figure 8 This is a three-dimensional structural diagram of the adapter rod in an embodiment of the present invention;

[0035] Figure 9 This is a cross-sectional view of the adapter rod and push plate in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the air extraction component in an embodiment of the present invention;

[0037] Figure 11 This is a top view of an embodiment of the present invention.

[0038] In the picture:

[0039] 11. Valve body; 12. Valve stem; 121. Sealing groove; 13. O-ring seal;

[0040] 2. Vehicle assembly; 21. Placement seat one; 22. Placement seat two; 221. Channel one; 222. Guide channel; 2221. Step; 23. Placement rod; 231. Placement part; 232. Frustum part; 233. Guide part; 2331. Protruding ring; 24. Elastic element; 25. Guide sleeve; 26. Connecting seat; 261. Air extraction channel;

[0041] 3. Lifting assembly; 31. Lifting rod; 32. Lifting drive component three;

[0042] 4. Assembly mechanism; 41. Adapter assembly; 411. Adapter rod; 4111. Groove; 4112. Positioning groove; 412. Push plate; 413. Lifting drive component one; 414. Lifting plate one; 415. Lifting drive component two; 42. Lateral movement assembly; 421. Frame; 422. Lateral movement drive component one;

[0043] 5. Air extraction assembly; 51. Lateral movement drive component two; 52. Air extraction pipe;

[0044] 6. Clamping assembly; 61. Clamping plate; 62. Clamping drive component;

[0045] 7. Turntable;

[0046] 8. Feeding mechanism;

[0047] 9. Marking agencies. Detailed Implementation

[0048] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0049] The present invention provides a sealing ring assembly device for a shock absorber valve body, see attached drawing. Figure 1 As shown, the shock absorber valve body includes a valve body 11 and a valve stem 12 that can move up and down within the valve body 11. The assembly device is used to fit an O-ring 13 onto the valve stem 12. Before assembly, the valve stem 12 is already inserted into the valve body 11. A sealing groove 121 is provided on the valve stem 12 for the O-ring 13 to be partially embedded. The sealing groove 121 is located near the top of the valve stem 12.

[0050] See appendix Figure 2 and attached Figure 3 As shown, the assembly device includes a carrier assembly 2, a lifting assembly 3, and an assembly mechanism 4. The carrier assembly 2 is used to place a pair of valve body bodies 11 and O-ring seals 13. The lifting assembly 3 is used to lift the valve stem 12 inside the valve body body 11 so that the sealing groove of the valve body body 11 extends upward out of the valve body body 11. The assembly mechanism 4 is used to assemble the O-ring seals 13 on the carrier assembly 2 onto the sealing groove 121 of the valve stem 12.

[0051] See appendix Figure 4 Appendix Figure 5 and attached Figure 6 As shown, the carrier assembly 2 includes a first placement seat 21 and a second placement seat 22 arranged side by side. The first placement seat 21 is used to support the valve body 11 to which the valve stem 12 is inserted. The second placement seat 22 has a channel 221. A placement rod 23 that can move up and down along the channel 221 is provided inside the second placement seat 22. The placement rod 23 includes a placement part 231. A portion of the placement part 231 extends upward out of the second placement seat 22 and is fitted with an O-ring 13. The diameter of the placement part 231 is larger than the inner diameter of the O-ring 13. When the O-ring 13 is fitted onto the placement part 231, the O-ring 13 is in an open state.

[0052] In one embodiment, the valve body 11 and the O-ring 13 are manually fed, that is, manually placed into the placement seat 21 and fitted onto the placement part 231. Alternatively, a robotic arm can be used for handling and placement.

[0053] The lifting assembly 3 is located below the carrier assembly 2. The lifting assembly 3 includes a lifting rod 31 that can move up and down. The lifting rod 31 can be inserted upward into the placement seat 21 and lift the valve stem 12 inside the valve body 11 upward.

[0054] Assembly mechanism 4 is located above vehicle assembly 2, see appendix. Figure 7 As shown, the assembly mechanism 4 includes a transfer assembly 41 that can reciprocate along the arrangement direction of placement seat 1 21 and placement seat 22. During the movement, the transfer assembly 41 can reach directly above placement seat 1 21 and placement seat 22 respectively. The transfer assembly 41 includes a transfer rod 411 and a push plate 412 that can move up and down synchronously. The push plate 412 can also move up and down relative to the transfer rod 411 to push the O-ring 13 on the transfer rod 411 downward. When the adapter rod 411 moves to the top of the second placement seat 22, it is coaxial with the placement rod 23. At this time, the adapter rod 411 moves down to push the placement rod 23 down relative to the second placement seat 22. The second placement seat 22 pushes the sealing ring on the placement rod 23 onto the adapter rod 411. When the adapter rod 411 moves to the top of the first placement seat 21, it is coaxial with the valve stem 12. When the adapter rod 411 moves down and abuts against the valve stem 12, the push plate 412 moves down relative to the adapter rod 411 to push the O-ring 13 on the adapter rod 411 down onto the valve stem 12 to complete the assembly of the O-ring 13 on the valve stem 12.

[0055] In this embodiment, the O-ring 13 and the valve body 11 are positioned by the carrier assembly 2. In particular, when positioning the O-ring 13, the O-ring 13 is fitted onto a placement rod 23 that can move up and down relative to the placement seat 22. At this time, the seal ring is no longer opened by the support claw structure, but the O-ring 13 is transferred by the adapter rod 411. The adapter rod 411 pushes the placement rod 23 down to transfer the O-ring 13 on the placement part 231 to the adapter rod 411. After the placement rod 23 and the adapter rod 411 are aligned vertically, the adapter rod 411 moves down until the O-ring 13 on the placement part 231 abuts against the upper surface of the placement seat 22. At this time, the upper surface of the placement seat 22 pushes the O-ring 13 on the placement part 231 to disengage from the placement rod 23 and slide onto the adapter rod 411. Then the adapter rod 411 moves to align with the valve stem 12. After the adapter rod 411 and the valve stem 12 are pushed together, the push plate 412 moves down and pushes the O-ring 13 on the adapter rod 411 onto the valve stem 12.

[0056] The O-ring 13 is first evenly spread on the placement part 231 of the placement rod 23, then transferred to the adapter rod 411, and finally pushed onto the valve stem 12 by the push plate 412. Throughout the process, the O-ring 13 is subjected to uniform force and will not undergo local compression deformation. The O-ring 13 is transferred by scraping and pushing, rather than clamping or pulling, ensuring uniform deformation of the O-ring 13, which can better coaxialize and fit with the valve stem 12, resulting in a higher success rate of transfer. For O-rings 13 with a diameter of only a few millimeters, the moving distance of the support claw structure is difficult to control and it is not convenient to insert into the small-sized O-ring 13, which can easily damage the O-ring 13. However, the assembly device in this embodiment can complete precise assembly in a confined space by extending the adapter rod 411 and pushing out the push plate 412.

[0057] In this embodiment, see Appendix Figure 6 As shown, this is a cross-sectional view along the axial direction of the placement rod 23. The diameter of the upper opening of the channel 221 is smaller than the outer diameter of the O-ring 13 on the placement part 231. Therefore, when the placement rod 23 moves downwards, the O-ring 13 will not enter the channel 221 but will be blocked by the upper surface of the placement seat 22. As the placement rod 23 continues to move downwards, the placement seat 22 can limit the position of the O-ring 13. (See attached diagram.) Figure 9 As shown, the push plate 412 has a through hole for the adapter rod 411 to pass through. The diameter of the through hole matches the diameter of the adapter rod 411, that is, the diameter of the through hole is slightly larger than the diameter of the adapter rod 411, ensuring that the adapter rod 411 and the push plate 412 can slide relative to each other. However, the diameter of the through hole is smaller than the outer diameter of the O-ring 13 on the adapter rod 411, ensuring that the push plate 412 can push the O-ring 13 on the adapter rod 411 to slide. Because the adapter rod 411 needs to push the placement rod 23 back into the channel 221 so that the upper surface of the placement seat 22 can push the O-ring 13 onto the adapter rod 411, the diameter of the channel 221 needs to be large enough to allow the lower end of the adapter rod 411 to be inserted. Therefore, the diameter of the channel 221 needs to be slightly larger than the diameter of the adapter rod 411.

[0058] In one embodiment, the diameter D1 of the valve stem 12, the diameter D2 of the placement part 231, and the diameter D3 of the adapter rod 411 are the same, which enables the adapter of the O-ring 13. In this case, the O-ring 13 needs to be in a large open state when it is initially placed in the placement part 231.

[0059] In one embodiment, the diameter D3 of the adapter rod 411 is larger than the diameter D2 of the placement portion 231 of the placement rod 23 but smaller than the outer diameter of the O-ring 13 on the placement rod 23. Simultaneously, the diameter D3 of the adapter rod 411 is smaller than the diameter D1 of the valve stem 12, meaning the diameter D2 of the placement portion 231 < the diameter D3 of the adapter rod 411 < the diameter D1 of the valve stem 12. Because the valve stem 12 has a larger diameter, if the diameter of the placement portion 231 is also set to be large, although the fitting requirement can be met, the O-ring 13 will be initially stretched too large, easily damaging the seal. Furthermore, the O-ring 13 will be difficult to fit onto the placement rod 23. Therefore, in this embodiment, according to the assembly process of the O-ring 13, the placement portion 231, the adapter rod 411, and the valve stem 12 are arranged in a gradually increasing diameter configuration to satisfy the transfer and fitting of the O-ring 13, while also facilitating the loading of the O-ring 13.

[0060] The differences between the diameter D2 of the placement part 231 and the diameter D3 of the adapter rod 411, and the differences between the diameter D3 of the adapter rod 411 and the diameter D1 of the valve stem 12, should not be too large to ensure that no step that the O-ring 13 cannot cross is formed between the placement rod 23 and the adapter rod 411, or between the adapter rod 411 and the valve stem 12. In one embodiment, the differences between the diameter of the placement part 231 and the diameter of the adapter rod 411, and the differences between the diameter of the adapter rod 411 and the diameter of the valve stem 12, are not greater than 1 mm, thereby ensuring that the O-ring 13 itself can be sequentially transferred. For example, the diameter of the valve stem 12 is 3.2 mm, the diameter of the placement part 231 is 3.1 mm, and the diameter of the adapter rod 411 is 3.15 mm.

[0061] In one embodiment, see Appendix Figure 6 As shown, the placement rod 23 also includes a frustum 232 located at the top of the placement part 231. The frustum 232 forms a constricted structure at the top of the placement part 231, and the O-ring 13 is finally fitted onto the placement part 231. However, because the frustum 232 forms a constricted structure, it is convenient to fit the O-ring 13 onto the placement rod 23. The small circular surface of the frustum 232 is not larger than the inner diameter of the O-ring 13 in its natural state. At this time, it is convenient to fit the O-ring 13 onto the frustum 232 in its natural state. Then, by pushing the O-ring 13 downward, the frustum 232 gradually expands the O-ring 13, allowing the O-ring 13 to fit onto the placement part 231 in an expanded state, ensuring that the O-ring 13 will not detach from the placement rod 23.

[0062] The adapter rod 411 has a groove 4111 corresponding to the frustum portion 232 formed inward from its lower surface, and the frustum portion 232 can be completely embedded in the groove 4111. For example, the depth of the groove 4111 is the same as the height of the frustum portion 232. The groove 4111 improves the stability of the connection between the adapter rod 411 and the placement rod 23, reduces the relative shaking generated when the adapter rod 411 and the placement rod 23 are connected, and improves the stability of the O-ring seal 13 on the placement rod 23 when it is transferred to the adapter rod 411; at the same time, when transferring the O-ring seal 13, the groove 4111 can cover the frustum portion 232, ensuring that the O-ring seal 13 will not retract and that the O-ring seal 13 on the placement rod 23 can be pushed onto the adapter rod 411.

[0063] In one embodiment, see Appendix Figure 8 and attached Figure 9 As shown, because the diameter of the adapter rod 411 is larger than the diameter of the placement part 231, the lower surface of the adapter rod 411 transitions to the side wall of the adapter rod 411 with an arc. At this time, the lower end of the adapter rod 411 also forms a constriction structure. When the O-ring 13 is pushed from the placement rod 23 onto the adapter rod 411, the arc transition structure guides the O-ring 13 and further expands the O-ring 13, ensuring that the O-ring 13 can smoothly transition onto the adapter rod 411.

[0064] Because the O-ring is small in size and the adapter rod 411 will move, in order to prevent the O-ring 13 from falling off the adapter rod 411, a positioning groove 4112 is provided around the lower end of the adapter rod 411. Part of the O-ring 13 is embedded in the positioning groove 4112. At this time, the O-ring 13 is not easy to slide on the adapter rod 411, thus ensuring the stability of the adapter rod 411 in transporting the O-ring 13.

[0065] In one embodiment, see Appendix Figure 6 As shown, an elastic element 24 is provided inside the second placement seat 22. The elastic element 24 is used to limit the placement rod 23 to a first position. At this time, part of the placement rod 23 extends upward out of the second placement seat 22, and the adapter rod 411 can push the placement rod 23 to move downward against the elastic force of the elastic element 24.

[0066] The second placement seat 22 also includes a guide channel 222 located below the first channel 221. The placement rod 23 includes a guide portion 233 located below the placement part 231. The guide portion 233 slides within the guide channel 222, and a guide sleeve 25 is provided within the guide channel 222 to guide the sliding of the guide portion 233. The diameter of the guide portion 233 is larger than the diameter of the placement part 231 to improve the strength of the placement rod 23.

[0067] The guide channel 222 has a stepped structure. The guide sleeve 25 is set at the bottom of the guide channel 222. A step 2221 is set inside the guide channel 222. A protruding ring 2331 is set on the guide part 233. The upper surface of the protruding ring 2331 can abut against the step 2221, thereby limiting the distance of the guide rod extending out of the second placement seat 22.

[0068] The elastic element 24 is a spring sleeved outside the guide portion 233. The spring is confined between the convex ring 2331 and the guide sleeve 25. One end of the spring abuts against the lower surface of the convex ring 2331, and the other end abuts against the upper surface of the guide sleeve 25. When the convex ring 2331 abuts against the step 2221, the spring is in its natural or compressed state. At this time, the placement rod 23 is in its first position when it is not subjected to a downward external force. When the adapter rod 411 pushes the placement rod 23 downward, the spring is continuously compressed, allowing the top end of the adapter rod 411 to retract into the placement seat 22.

[0069] See appendix Figure 7 As shown, the adapter assembly 41 includes a lifting drive component 413 and a lifting plate 414 that moves up and down under the drive of the lifting drive component 413. A second lifting drive component 415 and an adapter rod 411 are fixed on the lifting plate 414. A push plate 412, sleeved outside the adapter rod 411, is fixed to the output end of the second lifting drive component 415. The first lifting drive component 413 drives the adapter rod 411, the second lifting drive component, and the push plate 412 to move up and down synchronously. The second lifting drive component can also drive the push plate 412 to move up and down relative to the adapter rod 411 independently.

[0070] Assembly mechanism 4 also includes a transverse moving component 42, which includes a stand 421. A transverse moving drive component 422 is fixed on the stand 421. The transverse moving drive component 422 is used to drive a transverse moving plate to move along the arrangement direction of the first placement seat 21 and the second placement seat 22. The adapter component 41 is set on the transverse moving plate and moves synchronously with the transverse moving plate. That is, the lifting drive component 413 is fixed on the transverse moving plate.

[0071] To limit the movement distance of the transverse plate, limit blocks are also provided on both sides of the transverse plate in the direction of movement. When the transverse plate and the limit blocks come into contact, the transverse plate cannot continue to move.

[0072] The lifting assembly 3 also includes a lifting drive component 32, and the lifting rod 31 is connected to the lifting drive component 32 and is lifted and lowered under the drive of the lifting drive component 32.

[0073] The lifting drive and the lateral drive 422 are linear modules; for example, the lifting drive and the lateral drive 422 are cylinders.

[0074] See appendix Figure 4As shown, the vehicle assembly 2 also includes a connecting seat 26. Placement seat 1 21 and placement seat 22 are both fixed on the connecting seat 26. The vehicle assembly 2 is a whole and can be moved as a whole between the assembly mechanism 4 and the lifting assembly 3 for processing.

[0075] In one embodiment, the assembly device further includes a vacuum assembly 5. The connecting seat 26 and the placement seat 21 share a vacuum channel 261 that communicates with the valve body 11 within the placement seat 21. The vacuum assembly 5 provides negative pressure to the vacuum channel 261. The vacuum assembly 5, on the one hand, removes foreign objects from the valve body 11, ensuring the valve stem 12 within the valve body 11 can move up and down; on the other hand, it positions the valve body 11 within the placement seat 21, preventing the valve body 11 from detaching from the placement seat 21 when the lifting assembly 3 lifts the valve stem 12.

[0076] See appendix Figure 10 As shown, the air extraction assembly 5 includes a transverse drive component 51 and an air extraction pipe 52 that moves closer to or further away from the connecting seat 26 under the drive of the transverse drive component 51. One end of the air extraction pipe 52 can be inserted into the air extraction channel 261 to perform air extraction.

[0077] In one embodiment, the assembly apparatus further includes a clamping assembly 6, which clamps the valve body 11 within the placement seat 21. The clamping assembly 6 includes a clamping plate 61 and a clamping drive 62. The clamping drive 62 drives the clamping plate 61 closer to the valve body 11 and presses the valve body 11 downwards within the placement seat 21, ensuring that the valve body 11 remains unchanged when the lifting assembly 3 lifts the valve stem 12 upwards. The clamping plate 61 has a clearance notch to ensure that it does not interfere with the vertical movement of the assembly assembly above.

[0078] The carrier assembly 2 is fixed on a turntable 7, which drives the carrier to the working area of ​​the assembly mechanism 4. Multiple carrier assemblies 2 are mounted on the turntable 7, and the multiple carrier assemblies 2 rotate synchronously with the turntable 7, arriving at the working area of ​​the assembly mechanism in sequence.

[0079] In one embodiment, the assembly apparatus further includes a positioning detection element, which is used to detect whether the carrier assembly 2 has reached the working area of ​​the lifting assembly 3 and the assembly mechanism 4. For example, the positioning detection element is a through-beam sensor. When the through-beam sensor is blocked, it indicates that the carrier assembly 2 is in position. At this time, the lifting assembly 3 lifts the valve stem 12, and the assembly mechanism 4 assembles the O-ring seal 13.

[0080] See appendix Figure 11As shown, a feeding mechanism 8 and a marking mechanism 9 are also provided along the rotation direction of the turntable 7. The marking mechanism 9 is used to affix labels to the valve body 11, and the feeding mechanism 8 is used to feed the shock absorber valve body after the O-ring seal 13 is installed. For example, there are two marking mechanisms 9, which are laser marking machines or labeling machines, respectively. The feeding mechanism 8 includes a robot arm that can grasp the valve body 11 in the placement seat 21.

[0081] In one embodiment, a method for assembling the sealing ring of the shock absorber valve body is also described, using the aforementioned assembly device. The assembly method specifically includes:

[0082] Place the valve body 11 with the valve stem 12 inserted into the placement seat 21, and put the O-ring 13 onto the placement part 231 of the placement rod 23. At this time, the O-ring 13 is in an open state and will not slide on the placement part 231.

[0083] The lifting rod 31 of the lifting assembly 3 moves upward, inserts into the placement seat 21, and lifts the valve stem 12 inside the valve body 11.

[0084] While the lifting assembly 3 is being lifted, the adapter assembly 41 moves horizontally to a position where the adapter rod 411 and the placement rod 23 are coaxial. The adapter rod 411 moves downward, and after the adapter rod 411 and the placement rod 23 come into contact, the placement rod 23 is pushed downward relative to the second placement seat 22 until the lower end of the adapter rod 411 is inserted into the second placement seat 22. The upper surface of the second placement seat 22 pushes the O-ring 13 on the placement rod 23 onto the adapter rod 411.

[0085] The adapter assembly 41 moves upward to reset and then moves horizontally to a position where the adapter rod 411 and the valve stem 12 are coaxial. After the adapter rod 411 moves downward and comes into contact with the valve stem 12, the push plate 412 moves downward relative to the adapter rod 411 to push the O-ring 13 on the adapter rod 411 downward onto the valve stem 12 to complete the assembly of the O-ring 13 on the valve stem 12.

[0086] Before the lifting assembly 3 lifts the valve stem 12, the air extraction pipe 52 is first inserted into the connecting seat 26, and the air extraction assembly 5 extracts air from the valve body 11 in the placement seat 21.

[0087] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A sealing ring assembly device for a shock absorber valve body, characterized in that: The assembly device includes: The carrier assembly includes a first placement seat and a second placement seat arranged side by side. The first placement seat is used to support a valve body body with a valve stem inserted into it. The second placement seat has a channel. The second placement seat has a placement rod that can move up and down along the channel. The placement rod includes a placement part that extends upward out of the second placement seat and is fitted with an O-ring. The diameter of the placement part is larger than the diameter of the O-ring. A lifting assembly, located below the carrier, includes a lifting rod capable of being inserted upward into the placement seat and lifting the valve stem upward; The assembly mechanism includes a transfer assembly located above the carrier assembly and capable of reciprocating along the arrangement direction of the first and second placement seats. The transfer assembly includes a transfer rod and a push plate capable of moving up and down synchronously. The push plate can also move up and down relative to the transfer rod. When the adapter rod moves to the top of the second placement seat and is coaxial with the placement rod, the downward-moving portion of the adapter rod inserts into the first channel and pushes the placement rod downward relative to the second placement seat. The second placement seat pushes the O-ring seal on the placement rod onto the adapter rod. When the adapter rod moves to the top of the first placement seat and is coaxial with the valve stem, after the adapter rod moves downward and abuts against the valve stem, the push plate moves downward relative to the adapter rod to push the O-ring seal on the adapter rod downward onto the valve stem. The second placement seat has a channel for the placement part to slide, the diameter of the channel is smaller than the outer diameter of the O-ring seal on the placement part and the diameter of the adapter rod; the push plate has a through hole for the adapter rod to pass through, the diameter of the through hole is larger than the diameter of the adapter rod and smaller than the outer diameter of the O-ring seal on the adapter rod; the second placement seat has an elastic element inside, the elastic element limits the placement rod to a first position where it extends upward from the second placement seat, and the adapter rod can push the placement rod downward against the elastic force of the elastic element; The placement rod also includes a frustum located at the top of the placement part, the large circular surface of the frustum being aligned with the placement part and having the same diameter; the adapter rod has a groove corresponding to the frustum from its lower surface inward, and the frustum can be completely embedded in the groove; The lower end area of ​​the adapter rod is provided with a positioning groove around its circumference, and part of the O-ring is embedded in the positioning groove.

2. The assembly apparatus according to claim 1, characterized in that: The diameter of the placement part is smaller than the diameter of the adapter rod, and the difference is no greater than 1 mm; the diameter of the adapter rod is smaller than the diameter of the valve body, and the difference is no greater than 1 mm.

3. The assembly apparatus according to claim 2, characterized in that: The second placement seat is also provided with a guide channel located below the first channel. The placement rod includes a guide part located below the placement part. The elastic element is a spring sleeved on the guide part. A step is provided in the guide channel. A protruding ring is provided on the guide part. When the upper surface of the protruding ring abuts against the step, the spring is in a natural state or a compressed state, and the placement rod is in the first position.

4. The assembly apparatus according to claim 1, characterized in that: The adapter assembly includes a first lifting drive component and a first lifting plate that moves up and down under the drive of the first lifting drive component. A second lifting drive component and the adapter rod are fixed on the first lifting plate. A push plate sleeved on the outside of the adapter rod is fixed at the output end of the second lifting drive component.

5. The assembly apparatus according to any one of claims 1-4, characterized in that: It also includes an air extraction assembly. The first placement seat and the second placement seat are fixed together on a connecting seat. The connecting seat and the first placement seat are provided with an air extraction channel that communicates with the valve body inside the first placement seat. The air extraction assembly is used to provide negative pressure to the air extraction channel.

6. A method for assembling a sealing ring for a shock absorber valve body, characterized in that: Based on the assembly apparatus according to any one of claims 1-5, the assembly method includes: Place the valve body with the valve stem inserted into it into the placement seat, and put the O-ring on the placement part of the placement rod; The lifting rod of the lifting assembly moves upward, inserts into the placement seat, and lifts the valve rod inside the valve body upward; While the lifting assembly is lifting, the adapter assembly moves horizontally to a position where the adapter rod and the placement rod are coaxial. The adapter rod moves downward, and after the adapter rod and the placement rod abut against each other, the placement rod is pushed downward relative to the second placement seat until the lower end of the adapter rod is inserted into the second placement seat. The upper surface of the second placement seat pushes the O-ring on the placement rod onto the adapter rod. The adapter assembly moves upward to reset and then horizontally to a position where the adapter rod and the valve stem are coaxial. After the adapter rod moves downward and abuts against the valve stem, the push plate moves downward relative to the adapter rod to push the O-ring on the adapter rod downward onto the valve stem.

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