Hand-held grommet assembly device

Abstract

The application relates to a handheld sealing ring assembling device, belonging to the technical field of assembling tools, which comprises a base and a mandrel, the mandrel is used for accommodating a sealing ring to be assembled, the base is provided with a fixing seat used for fixing the mandrel, the mandrel comprises a main body part, a conical surface part and a cylindrical surface part, the sealing ring to be assembled is sleeved on the main body part, a positioning hole used for embedding a product part is coaxially arranged on the end of the mandrel close to the cylindrical surface part, a mounting groove on the product part embedded in the positioning hole is flush with the end surface of the cylindrical surface part away from the conical surface part, a pushing mechanism is further arranged on the base, and the sealing ring slides to the embedded mounting groove towards the cylindrical surface part under the action of the pushing mechanism. The application has the effects of small volume, no restriction on the volume and mass of the assembling part, flexible and fast operation, and guarantee of good cleanness of the assembled sealing ring.

Description

Technical Field

[0001] This application relates to the technical field of assembly tooling, and in particular to a handheld assembly sealing ring device. Background Technology

[0002] Existing technologies for assembling sealing rings on shaft parts still rely on manual assembly or the use of fixed devices, which is inconvenient for large quantities of parts. Furthermore, the sealing rings are easily contaminated by dust or fibers from contact with the external environment, affecting their sealing performance. Summary of the Invention

[0003] To facilitate the installation of sealing rings onto shaft-type product parts, this application provides a handheld sealing ring assembly device.

[0004] The handheld sealing ring assembly device provided in this application adopts the following technical solution:

[0005] A handheld sealing ring assembly device is used to install a sealing ring into a mounting groove of a product part. It includes a base and a mandrel. The mandrel is used to hold the sealing ring to be assembled. The base has a fixing seat for fixing the mandrel. The mandrel includes a main body, a conical portion, and a cylindrical portion. The sealing ring to be assembled is fitted onto the main body. The conical portion is located between the main body and the cylindrical portion. The diameter of the cylindrical portion is larger than the diameter of the main body. The diameter of the conical portion decreases sequentially towards the cylindrical portion of the main body. A positioning hole is coaxially formed at the end of the mandrel near the cylindrical portion for fitting the product part. The mounting groove on the product part, which is embedded in the positioning hole, is flush with the end face of the cylindrical portion facing away from the conical portion. The base also has a pushing mechanism. Under the action of the pushing mechanism, the sealing ring slides towards the cylindrical portion into the mounting groove.

[0006] By adopting the above technical solution, the sealing ring to be assembled is fitted onto the main body, and then the product part is embedded into the positioning hole. The sealing ring can then be pushed by the pushing mechanism to slide along the conical part to the cylindrical part, gradually expanding the sealing ring. Then the sealing ring is slid along the cylindrical part to detach from the mandrel, so that the sealing ring can shrink into the mounting groove under its own elasticity, thus completing the assembly of the sealing ring. This device is small in size and is not restricted by the size or weight of the assembled parts. It is flexible and fast in operation and is convenient for assembling sealing rings on shaft parts.

[0007] Preferably, the pushing mechanism includes a sliding sleeve coaxially arranged with the mandrel. The inner diameter of the sliding sleeve is larger than the outer diameter of the cylindrical part. A plurality of pushing blocks are provided at one end of the sliding sleeve near the cylindrical part. The plurality of pushing blocks are arranged in a circumferential array with the axis of the sliding sleeve as the center. The pushing blocks slide radially along the sliding sleeve.

[0008] A guide plate is provided between two adjacent pusher blocks. The guide plate is connected to a sliding sleeve. A guide groove is provided on the side wall of the pusher block for the guide plate to slide. The part of the pusher block located on both sides of the guide groove is divided into a claw part and a step part.

[0009] The sliding sleeve is provided with a control ring for controlling the sliding of the pusher blocks toward the sliding sleeve. The control ring is elastic. Multiple pusher blocks are connected through the control ring. The pusher blocks are provided with control grooves for the control ring to fit into. Under the elastic action of the claw part, the claw part is made to fit against the outer wall of the mandrel. The stepped part is made to fit against the outer wall of the sliding sleeve. The sealing ring to be assembled is located on the side of the claw part away from the guide groove. The base is provided with a pusher assembly for controlling the sliding of the sliding sleeve.

[0010] By adopting the above technical solution, the guide block and guide groove cooperate to provide guidance and support for the sliding of the pusher block, thereby improving the stability of the pusher block sliding. By setting the control groove, the control ring is not easy to slide off the pusher block, and multiple pusher blocks are connected through the control ring, which facilitates the disassembly and assembly of the pusher blocks, thereby extending the service life of the device to a certain extent.

[0011] Preferably, the pushing assembly includes an expansion sleeve coaxially arranged with the sliding sleeve, the sliding sleeve being located between the expansion sleeve and the mandrel, the base having a sliding seat fixed to the expansion sleeve, the sliding seat being slidably disposed on the base, the expansion sleeve being located on the side of the guide plate near the step portion, the expansion sleeve having a compression elastic element, the end of the compression elastic element away from the expansion sleeve being connected to the sliding sleeve, and the sliding sleeve sliding towards the expansion sleeve under the action of the compression elastic element;

[0012] When the expansion sleeve slides toward the cylindrical surface, the expansion sleeve first fits against the stepped portion. The pusher block slides along the conical surface toward the direction away from the sliding sleeve until the gap between the stepped portion and the sliding sleeve is greater than the thickness of the expansion sleeve. Then, under the action of the compression elastic element, the sliding sleeve slides until the expansion sleeve fits against the guide plate.

[0013] By adopting the above technical solution, the sliding sleeve can be controlled by the sliding of the expansion sleeve, and under the action of the compression elastic element, the sliding sleeve can follow the sliding of the expansion sleeve well.

[0014] Preferably, the base is provided with a limiting sleeve for limiting the sliding length of the sliding sleeve, the base is provided with a limiting seat for fixing the limiting sleeve, and the base is provided with a pusher for pushing the sealing ring located on the main body toward the cylindrical surface.

[0015] When the expansion sleeve slides away from the cylindrical part, the sliding sleeve slides synchronously with the expansion sleeve under the action of the compression elastic element. The pusher block can move to the step part and abut against the outer wall of the expansion sleeve under the elastic action of the control ring. At this time, the gap between the claw part and the main body part can accommodate the sealing ring. When the sliding sleeve slides to fit with the limiting sleeve, the claw part is located between two adjacent sealing rings, and there is only one sealing ring between the claw part and the conical part. When the expansion sleeve continues to slide to separate from the step part, the pusher block can slide to the claw part embedded between two adjacent sealing rings under the action of the control ring, and the step part slides to abut against the sliding sleeve.

[0016] By adopting the above technical solution, the sliding length of the sliding sleeve is limited by the setting of the limiting sleeve, so that it can be used to feed materials in coordination with the sliding of the expansion sleeve, eliminating the need for manual feeding and improving the ease of use of the device.

[0017] Preferably, the limiting seat is located between the fixed seat and the sliding seat, and a protective sleeve for protecting the sealing ring is provided between the limiting seat and the fixed seat. The fixed seat is provided with a quick-clamp, and the protective sleeve and the mandrel are both fixed to the fixed seat by the quick-clamp.

[0018] By adopting the above technical solution and setting the protective sleeve, the sealing ring is protected, making it difficult for external dust and impurities to adhere to the sealing ring, thus effectively ensuring the sealing performance of the sealing ring.

[0019] Preferably, the pusher includes a pusher sleeve slidably disposed within the sheath, a transition block is provided on the fixed base, the transition block is fixed to the fixed base by a quick-release chuck, the transition block is provided with a transition through hole that extends axially and radially, the end of the mandrel away from the positioning hole is provided with a pusher through hole that extends axially and radially, both the transition through hole and the pusher through hole are T-shaped, when the mandrel is in contact with the transition block, the transition through hole and the pusher through hole are axially connected, a sealing part is provided between the sheath and the quick-release chuck of the mandrel, and the pusher sleeve is located on the side of the radial opening of the pusher through hole away from the transition block.

[0020] By adopting the above technical solution, since both the sheath and the quick-release chuck of the mandrel are equipped with sealing parts, and the outer wall of the pusher slide sleeve is in contact with the inner wall of the sheath, when air is injected into the transition block through the transition through hole, the gas can enter the pusher through hole along the transition through hole, and then be discharged into the sheath from the pusher through hole. Thus, the pusher slide sleeve can slide away from the fixed seat under the action of the gas, so that the sealing ring can slide towards the conical surface.

[0021] Preferably, it also includes a handle, the base is fixed to the handle, and the handle is provided with a hand guard.

[0022] By adopting the above technical solution, with the cooperation of the handle and the hand guard, it is convenient for the operator to pick up the device and assemble the sealing ring into the mounting groove of the product part.

[0023] Preferably, the base is provided with a linear guide rail for sliding the sliding seat, the linear guide rail is arranged along the length direction of the mandrel, and the base is provided with a control cylinder for controlling the sliding of the sliding seat, the piston rod of the control cylinder is connected to the sliding seat.

[0024] By adopting the above technical solution and setting the linear guide rail, the stability and smoothness of the sliding seat sliding on the base are improved.

[0025] Preferably, the handle is provided with a reversing valve, which includes an air inlet, a cylinder air supply port and a pusher air supply port. The reversing valve is provided with a main air pipe connected to the air inlet, a cylinder connecting pipe connected to the cylinder air supply port and a pusher connecting pipe connected to the pusher air supply port.

[0026] The control cylinder includes a cylinder inlet and a cylinder outlet. The control cylinder is provided with an outlet pipe that communicates with the cylinder outlet. The end of the cylinder connecting pipe away from the reversing valve is connected to the control cylinder and communicates with the cylinder inlet.

[0027] The end of the air outlet pipe away from the control cylinder is connected to the transition block, and the end of the pusher connecting pipe away from the reversing valve is connected to the transition block. The two radial openings of the transition through hole are respectively connected to the air outlet pipe and the pusher connecting pipe.

[0028] By adopting the above technical solution, when the reversing valve is started, air is injected into the reversing valve through the main air pipe, and part of the gas enters the air inlet of the cylinder through the cylinder connecting pipe, thereby starting the control cylinder; the remaining gas in the reversing valve enters the transition through hole through the pusher connecting pipe. When the piston rod of the control cylinder retracts, the gas in the control cylinder can also enter the transition through hole through the air outlet pipe, so that the sealing ring away from the fixed seat can slide towards the conical surface, improving the reliability of feeding by sliding the pusher sleeve.

[0029] Preferably, the handle is further provided with a trigger for controlling the reversing valve, and the trigger is rotatably connected to the handle.

[0030] By adopting the above technical solution, in actual use, the operator only needs to pull the trigger to start the reversing valve, thereby assembling the sealing ring. The operation is simple and it is convenient to install the sealing ring onto shaft-type product parts.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Place the sealing ring to be assembled onto the main body, and then insert the product part into the positioning hole. The sealing ring can then be pushed along the conical part to the cylindrical part by the pushing mechanism, gradually expanding the sealing ring. Then, slide the sealing ring along the cylindrical part until it is separated from the mandrel, so that the sealing ring can shrink into the mounting groove under its own elasticity, thus completing the assembly of the sealing ring. This device is small in size and is not restricted by the size or weight of the assembled parts. It is flexible and quick to operate and is convenient for assembling sealing rings on shaft parts.

[0033] 2. The protective sleeve provides protection for the sealing ring, making it difficult for external dust and impurities to adhere to it, ensuring that the assembled sealing ring has good cleanliness, thereby effectively guaranteeing the sealing performance of the sealing ring. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the material loading state structure in an embodiment of this application.

[0035] Figure 2 This is a schematic diagram of the material pushing state structure in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the mandrel structure in an embodiment of this application.

[0037] Figure 4 This is a schematic diagram of the structure of a product part in an embodiment of this application.

[0038] Figure 5 This is a schematic diagram of the sliding sleeve in an embodiment of this application.

[0039] Figure 6 This is a schematic diagram of the expansion sleeve in an embodiment of this application.

[0040] Figure 7 This is a schematic diagram of the pusher block in an embodiment of this application.

[0041] Figure 8 This is a schematic diagram of the pusher block from another perspective in an embodiment of this application.

[0042] Figure 9 This is a schematic diagram of the limiting sleeve in an embodiment of this application.

[0043] Explanation of reference numerals in the attached drawings: 1. Base; 2. Linear guide rail; 3. Sliding seat; 4. Expansion sleeve; 41. Limiting part; 5. Sliding sleeve; 51. Guide plate; 6. Compression spring; 7. Limiting retaining ring; 8. Transition block; 81. Transition through hole; 9. Push block; 91. Stepped part; 92. Guide groove; 93. Control groove; 94. Claw part; 10. Control ring; 11. Limiting seat; 12. Limiting sleeve; 13. Mandrel; 131. Positioning groove; 132. Conical part; 133. Cylindrical part; 134. 135. Positioning hole; 136. Slot; 137. Pushing through hole; 14. Main body; 15. Quick clamp; 16. Control cylinder; 17. Cylinder inlet; 18. Cylinder outlet; 19. Air outlet pipe; 10. Protective sleeve; 10. Pushing slide sleeve; 11. Handle; 12. Reversing valve; 133. Cylinder connecting pipe; 14. Pushing connecting pipe; 25. Trigger; 26. Hand guard; 27. Main air pipe; 28. Sealing ring; 29. ​​Product parts; 20. Mounting groove; 21. Fixing base. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0045] This application discloses a handheld sealing ring assembly device, referring to... Figure 1 and Figure 2 The device includes a base 1, a handle 18, and a spindle 13. The handle 18 is T-shaped, and the base 1 is fixed on the handle 18. The handle 18 is also integrally formed or equipped with a hand guard 21. With the cooperation of the handle 18 and the hand guard 21, it is convenient for the operator to pick up the device and assemble the sealing ring 23 into the mounting groove 241 of the product part 24.

[0046] Reference Figure 1 and Figure 3 The base 1 is provided with a sliding seat 3, a limiting seat 11, and a fixed seat 25 in sequence. The fixed seat 25 and the limiting seat 11 are fixedly mounted on the base 1. The sliding seat 3 is slidably mounted on the base 1. The base 1 is provided with a linear guide rail 2 for sliding the sliding seat 3. The linear guide rail 2 is arranged along the length direction of the spindle 13. The linear guide rail 2 improves the stability and smoothness of the sliding seat 3 sliding on the base 1. The base 1 is provided with a control cylinder 15 for controlling the sliding of the sliding seat 3. In this embodiment, the control cylinder 15 is fixed to the limiting seat 11, and the piston rod of the control cylinder 15 is fixed to the sliding seat 3. The sliding of the sliding seat 3 can be controlled by the control cylinder 15. A quick-release chuck 14 is fixedly mounted on the fixed seat 25. The spindle 13 is provided with a groove 135 that cooperates with the quick-release chuck 14. The groove 135 is arranged in a ring shape. The components on the quick-release chuck 14 cooperate with the groove 135 to fix the spindle 13 on the base 1.

[0047] Reference Figure 2 , Figure 3 and Figure 4 The mandrel 13 is used to house the sealing ring 23 to be assembled. The mandrel 13 includes a main body 137, a conical part 132, and a cylindrical part 133. The sealing ring 23 to be assembled is fitted onto the main body 137. The conical part 132 is located between the main body 137 and the cylindrical part 133, and the diameter of the cylindrical part 133 is larger than the diameter of the main body 137. The diameter of the conical part 132 decreases sequentially in the direction toward the cylindrical part 133 and the main body 137. The end of the mandrel 13 away from the slot 135 is coaxially provided with a positioning hole 134 for the product part 24 to be fitted. The base 1 is also provided with A pushing mechanism is provided to push the sealing ring 23 located on the main body 137 to slide along the length direction of the mandrel 13. The mounting groove 241 on the product part 24 embedded in the positioning hole 134 is flush with the end face of the cylindrical part 133 away from the conical part 132. Under the action of the pushing mechanism, the sealing ring 23 can pass through the conical part 132 and the cylindrical part 133 in sequence. When the sealing ring 23 slides to the point of disengagement from the cylindrical part 133, the sealing ring 23 can retract into the mounting groove 241 of the product part 24 under its own elasticity, thereby completing the installation of the sealing ring 23.

[0048] Reference Figure 1 , Figure 2 and Figure 5 The pushing mechanism includes a sliding sleeve 5 coaxially arranged with the mandrel 13. The inner diameter of the sliding sleeve 5 is larger than the outer diameter of the cylindrical part 133, so the sliding sleeve 5 can slide along the length direction of the mandrel 13 to the cylindrical part 133. A plurality of pushing blocks 9 are slidably connected to one end of the sliding sleeve 5 near the cylindrical part 133. The pushing blocks 9 slide radially along the sliding sleeve 5. The number of pushing blocks 9 depends on the size of the sliding sleeve 5. In this embodiment, three pushing blocks 9 are selected. The three pushing blocks 9 are arranged in a circumferential array with the axis of the sliding sleeve 5 as the center. A guide plate 51 is provided between two adjacent pushing blocks 9. The guide plate 51 is fixed on the sliding sleeve 5. Guide grooves 92 are provided on the side walls on both sides of the pushing block 9 for the guide plate 51 to slide. With the cooperation of the guide block and the guide groove 92, the sliding of the pushing block 9 is guided and supported, thereby improving the stability of the sliding of the pushing block 9.

[0049] Reference Figure 5 , Figure 7 and Figure 8The portion of the pusher block 9 located on both sides of the guide groove 92 is divided into a claw portion 94 and a step portion 91. The sliding sleeve 5 is provided with a control ring 10 for controlling the pusher block 9 to slide towards the sliding sleeve 5. The control ring 10 is elastic. The three pusher blocks 9 are connected by the control ring 10. The pusher block 9 is provided with a control groove 93 for the control ring 10 to fit into. The control groove 93 is connected to the guide groove 92. By setting the control groove 93, the control ring 10 is not easy to slide away from the pusher block 9, and the control ring 10 is easy to disassemble and assemble. Under the elastic action of the claw portion 94, the claw portion 94 is in contact with the outer wall of the mandrel 13, and the step portion 91 is in contact with the outer wall of the sliding sleeve 5. The sealing ring 23 to be assembled is located on the side of the claw portion 94 away from the guide groove 92. When the sliding sleeve 5 slides away from the fixed seat 25, the sealing ring 23 can slide synchronously along the length direction of the mandrel 13 to detach from the mandrel 13 under the push of the claw portion 94.

[0050] Reference Figure 1 , Figure 2 and Figure 6 The base 1 is provided with a pusher assembly for controlling the sliding of the sliding sleeve 5. The pusher assembly includes an expansion sleeve 4 coaxially arranged with the sliding sleeve 5. The sliding sleeve 5 is located between the expansion sleeve 4 and the spindle 13. The expansion sleeve 4 is fixed on the sliding seat 3. The expansion sleeve 4 is located on the side of the guide plate 51 near the step 91. A limiting ring 7 is threadedly connected to the side of the sliding sleeve 5 away from the guide plate 51. The outer diameter of the limiting ring 7 is larger than the inner diameter of the expansion sleeve 4. With the cooperation of the limiting ring 7 and the guide plate 51, the sliding sleeve 5 is not easy to slip and separate from the expansion sleeve 4. The expansion sleeve 4 is provided with a compression elastic element. In this embodiment, the compression elastic element is a compression spring 6. The expansion sleeve 4 is coaxially provided with a limiting part 41 that cooperates with the limiting ring 7. The compression spring 6 is placed between the limiting part 41 and the limiting ring 7, so that one end of the compression spring 6 abuts against the limiting part 41 and the other end of the compression spring 6 abuts against the limiting ring 7. The sliding sleeve 5 slides toward the expansion sleeve 4 under the action of the compression elastic element.

[0051] When the expansion sleeve 4 slides toward the cylindrical surface 133, the expansion sleeve 4 first fits against the step 91. During the sliding process of the expansion sleeve 4, when the pusher block 9 slides along the conical surface 132 toward the direction away from the sliding sleeve 5 until the gap between the step 91 and the sliding sleeve 5 is greater than the thickness of the expansion sleeve 4, the sliding sleeve 5 slides down under the action of the compression spring 6 until the expansion sleeve 4 fits against the guide plate 51. Then, the sliding sleeve 5 can continue to slide by the sliding of the expansion sleeve 4.

[0052] Reference Figure 1 , Figure 2 and Figure 9The limiting seat 11 is fixedly connected with a limiting sleeve 12 for limiting the sliding length of the sliding sleeve 5. The base 1 is provided with a pusher for pushing the sealing ring 23 located on the main body 137 toward the cylindrical part 133. The connection transition between the main body 137 of the spindle 13 and the conical part 132 is provided with a positioning groove 131 for the sealing ring 23 to fit into. The sealing ring 23 closest to the conical part 132 will be embedded in the positioning groove 131 and wait for feeding.

[0053] When the expansion sleeve 4 slides toward the fixed seat 25, the sliding sleeve 5 can maintain a close fit with the expansion sleeve 4 under the action of the compression spring 6. Under the cooperation of the control ring 10 and the conical part 132, the pusher block 9 slides toward the sliding sleeve 5 until the step part 91 is in contact with the outer wall of the expansion sleeve 4. The gap between the claw part 94 and the main body part 137 can accommodate the sealing ring 23. When the sliding sleeve 5 slides to be in contact with the limiting sleeve 12, the claw part 94 is located between two adjacent sealing rings 23, and there is only one sealing ring 23 between the claw part 94 and the conical part 132. When the expansion sleeve 4 continues to slide until it separates from the step part 91, the pusher block 9 can slide to the point where the claw part 94 is embedded between two adjacent sealing rings 23 under the action of the control ring 10, and the step part 91 slides to be in contact with the sliding sleeve 5, thereby completing the feeding of the sealing ring 23.

[0054] Reference Figure 1 and Figure 2 A protective sleeve 16 for protecting the sealing ring 23 is provided between the limiting seat 11 and the fixed seat 25. The protective sleeve 16 is fixed to the fixed seat 25 by the quick clamp 14. The end of the protective sleeve 16 away from the fixed seat 25 is embedded in the limiting sleeve 12 and fixed to the limiting sleeve 12. The protective sleeve 16 provides protection for the sealing ring 23, making it difficult for external dust and impurities to adhere to the sealing ring 23, thus effectively ensuring the sealing performance of the sealing ring 23.

[0055] Reference Figure 1The pusher includes a pusher slide 17 disposed inside the sheath 16. The pusher slide 17 is sleeved on the main body 137. The outer wall of the pusher slide 17 is in contact with the inner wall of the sheath 16, and the inner wall of the pusher slide 17 is in contact with the outer wall of the spindle 13. By sliding the pusher slide 17, the sealing ring 23 located on the main body 137 can be pushed to slide. The fixed base 25 is provided with a transition block 8, which is fixed to the fixed base 25 by a quick-release chuck 14. The transition block 8 is provided with a transition through hole 81 that is axially and radially connected. The end of the spindle 13 away from the positioning hole 134 is provided with a push through hole 136 that is axially and radially connected. Both the transition through hole 81 and the push through hole 136 are T-shaped. When the spindle 13 is fixed to the fixed base 25 by the quick-release chuck 14, the spindle 13 is in contact with the transition block 8. At this time, the transition through hole 81 and the push through hole 136 are axially connected. The push sliding sleeve 17 is located on the side of the radial opening of the push through hole 136 away from the transition block 8. Both the sheath 16 and the quick-release chuck 14 of the spindle 13 are provided with a sealing part.

[0056] When gas is injected into the transition block 8 through the transition through hole 81, the gas can enter the push through hole 136 along the transition through hole 81, and then be discharged into the sheath 16 from the push through hole 136. Since there are sealing parts between the sheath 16 and the quick clamp 14 of the mandrel 13, and the outer wall of the push sliding sleeve 17 is in contact with the inner wall of the sheath 16, and the inner wall of the push sliding sleeve 17 is in contact with the outer wall of the mandrel 13, the push sliding sleeve 17 can slide away from the fixed seat 25 under the action of the gas, so that the sealing ring 23 away from the fixed seat 25 can slide into the embedded positioning groove 131.

[0057] Reference Figure 1 and Figure 2 The handle 18 is equipped with a reversing valve 19, which includes an air inlet, a cylinder air supply port, and a pusher air supply port. The reversing valve 19 is fixedly equipped with a main air pipe 22 communicating with the air inlet, a cylinder connecting pipe 191 communicating with the cylinder air supply port, and a pusher connecting pipe 192 communicating with the pusher air supply port. The control cylinder 15 includes a cylinder inlet 151 and a cylinder outlet 152. The control cylinder 15 is fixedly equipped with an outlet pipe 153 communicating with the cylinder outlet 152. The end of the cylinder connecting pipe 191 away from the reversing valve 19 is connected to the control cylinder 15 and communicates with the cylinder inlet 151. The end of the outlet pipe 153 away from the control cylinder 15 is connected to the transition block 8. The end of the pusher connecting pipe 192 away from the reversing valve 19 is connected to the transition block 8. The two radial openings of the transition through hole 81 are respectively connected to the outlet pipe 153 and the pusher connecting pipe 192.

[0058] When the reversing valve 19 is started, air is injected into the reversing valve 19 through the main air pipe 22. Some of the gas enters the air inlet of the cylinder through the cylinder connecting pipe 191, thereby starting the control cylinder 15. The remaining gas in the reversing valve 19 enters the transition through hole 81 through the pusher connecting pipe 192. The gas in the control cylinder 15 can also enter the transition through hole 81 through the air outlet pipe 153, so that the sealing ring 23 away from the fixed seat 25 can be kept in the position groove 131, improving the reliability of feeding by sliding the pusher sleeve 17.

[0059] Reference Figure 1 and Figure 2 The handle 18 is also equipped with a trigger 20 for controlling the reversing valve 19. The trigger 20 is rotatably connected to the handle 18. In actual use, the operator only needs to pull the trigger 20 to start the reversing valve 19, thereby assembling the sealing ring 23. The operation is simple and it is easy to install the sealing ring 23 onto the shaft product parts 24.

[0060] The implementation principle of a handheld sealing ring assembly device according to an embodiment of this application is as follows: Before actual operation, an appropriate amount of sealing rings 23 are pre-assembled on the mandrel 13, and then the mandrel 13 is inserted into the quick-release chuck 14. With the cooperation of the quick-release chuck 14 and the slot 135, the mandrel 13 is fixed on the base 1. Then, the trigger 20 is pulled, the device is activated, the pusher block 9 retracts to feed the material, so that one of the sealing rings 23 is located on the side of the claw 94 away from the fixed seat 25.

[0061] Insert the head of product part 24 into positioning hole 134. After axial positioning through the bottom plane of positioning hole 134, the outer side of mounting groove 241 of product part 24 is flush with the end face of cylindrical part 133 away from conical part 132. Pull trigger 20 to open the air passage. Control cylinder 15 to drive sliding seat 3 to slide away from fixed seat 25. During the sliding process, expansion sleeve 4 first fits with step part 91. When push block 9 slides along conical part 132 away from sliding sleeve 5 until the gap between step part 91 and sliding sleeve 5 is greater than the thickness of expansion sleeve 4, sliding sleeve 5 slides under the action of compression spring 6 until expansion sleeve 4 fits with guide plate 51. Then, the sliding sleeve 5 can continue to slide by expansion sleeve 4 until sealing ring 23 is separated from spindle 13 and retracts into mounting groove 241 under its own elasticity, completing the assembly of sealing ring 23.

[0062] Release the control of trigger 20, control cylinder 15 piston rod retracts, expansion sleeve 4 slides toward fixed seat 25, sliding sleeve 5 can maintain a state of contact with expansion sleeve 4 under the action of compression spring 6, push block 9 first slides to step part 91 and contact with outer wall of expansion sleeve 4 under the action of control ring 10. At this time, the gap between claw part 94 and main body part 137 can accommodate sealing ring 23. When sliding sleeve 5 slides to contact with limit sleeve 12, claw part 94 is located between two adjacent sealing rings 23, and the sealing ring 23 in positioning groove 131 is close to fixed seat 25. Then expansion sleeve 4 continues to slide until it separates from step part 91. Push block 9 can slide to claw part 94 between two adjacent sealing rings 23 under the action of control ring 10, and step part 91 slides to abut against sliding sleeve 5, thereby completing the feeding of sealing ring 23.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A handheld assembly device for installing a sealing ring (23) into a mounting groove (241) of a product part (24), characterized in that, The assembly includes a base (1) and a mandrel (13). The mandrel (13) is used to house the sealing ring (23) to be assembled. The base (1) is provided with a fixing seat (25) for fixing the mandrel (13). The mandrel (13) includes a main body (137), a conical part (132), and a cylindrical part (133). The sealing ring (23) to be assembled is fitted onto the main body (137). The conical part (132) is located between the main body (137) and the cylindrical part (133). The diameter of the cylindrical part (133) is larger than the diameter of the main body (137). 2) The diameter decreases sequentially along the direction towards the main body (137) of the cylindrical face (133). The end of the mandrel (13) near the cylindrical face (133) is coaxially provided with a positioning hole (134) for the product part (24) to be fitted. The mounting groove (241) on the product part (24) embedded in the positioning hole (134) is flush with the end face of the cylindrical face (133) away from the conical face (132). The base (1) is also provided with a pushing mechanism. Under the action of the pushing mechanism, the sealing ring (23) slides towards the cylindrical face (133) and into the mounting groove (241). The pushing mechanism includes a sliding sleeve (5) coaxially arranged with the mandrel (13). The inner diameter of the sliding sleeve (5) is larger than the outer diameter of the cylindrical part (133). The sliding sleeve (5) has multiple pushing blocks (9) at one end near the cylindrical part (133). The multiple pushing blocks (9) are arranged in a circular array with the axis of the sliding sleeve (5) as the center. The pushing blocks (9) slide along the radial direction of the sliding sleeve (5). A guide plate (51) is provided between two adjacent pusher blocks (9). The guide plate (51) is connected to the sliding sleeve (5). A guide groove (92) is provided on the side wall of the pusher block (9) for the guide plate (51) to slide. The part of the pusher block (9) located on both sides of the guide groove (92) is divided into a claw part (94) and a step part (91). The sliding sleeve (5) is provided with a control ring (10) for controlling the sliding of the pusher block (9) toward the sliding sleeve (5). The control ring (10) is elastic. Multiple pusher blocks (9) are connected through the control ring (10). The pusher block (9) is provided with a control groove (93) for the control ring (10) to fit into. Under the elastic action of the claw part (94), the claw part (94) is in contact with the outer wall of the mandrel (13). The step part (91) is in contact with the outer wall of the sliding sleeve (5). The sealing ring (23) to be assembled is located on the side of the claw part (94) away from the guide groove (92). The base (1) is provided with a pusher assembly for controlling the sliding of the sliding sleeve (5). The pushing assembly includes an expansion sleeve (4) coaxially arranged with the sliding sleeve (5). The sliding sleeve (5) is located between the expansion sleeve (4) and the mandrel (13). The base (1) is provided with a sliding seat (3) fixed to the expansion sleeve (4). The sliding seat (3) is slidably arranged on the base (1). The expansion sleeve (4) is located on the side of the guide plate (51) near the step (91). The expansion sleeve (4) is provided with a compression elastic element. The end of the compression elastic element away from the expansion sleeve (4) is connected to the sliding sleeve (5). The sliding sleeve (5) slides toward the expansion sleeve (4) under the action of the compression elastic element. When the expansion sleeve (4) slides toward the cylindrical part (133), the expansion sleeve (4) first fits against the step part (91). The pusher block (9) slides along the conical part (132) toward the direction away from the sliding sleeve (5) until the gap between the step part (91) and the sliding sleeve (5) is greater than the thickness of the expansion sleeve (4). Then, the sliding sleeve (5) slides under the action of the compression elastic element until the expansion sleeve (4) fits against the guide plate (51).

2. The handheld sealing ring assembly device according to claim 1, characterized in that, The base (1) is provided with a limiting sleeve (12) for limiting the sliding length of the sliding sleeve (5), the base (1) is provided with a limiting seat (11) for fixing the limiting sleeve (12), and the base (1) is provided with a pusher for pushing the sealing ring (23) located on the main body (137) toward the cylindrical surface (133). When the expansion sleeve (4) slides away from the cylindrical surface (133), the sliding sleeve (5) slides synchronously with the expansion sleeve (4) under the action of the compression elastic element. The pusher block (9) can move to the step portion (91) and abut against the outer wall of the expansion sleeve (4) under the elastic action of the control ring (10). At this time, the gap between the claw portion (94) and the main body portion (137) can accommodate the sealing ring (23). The sliding sleeve (5) slides to the limit sleeve ( 12) When the fit is made, the claw part (94) is located between two adjacent sealing rings (23), and there is only one sealing ring (23) between the claw part (94) and the conical part (132). When the expansion sleeve (4) continues to slide until it separates from the step part (91), the pusher block (9) can slide under the action of the control ring (10) to the claw part (94) to be embedded between two adjacent sealing rings (23), and the step part (91) slides to abut against the sliding sleeve (5).

3. The handheld sealing ring assembly device according to claim 2, characterized in that, The limiting seat (11) is located between the fixed seat (25) and the sliding seat (3). A protective sleeve (16) for protecting the sealing ring (23) is provided between the limiting seat (11) and the fixed seat (25). A quick clamp (14) is provided on the fixed seat (25). The protective sleeve (16) and the spindle (13) are both fixed to the fixed seat (25) by the quick clamp (14).

4. The handheld sealing ring assembly device according to claim 3, characterized in that, The pusher includes a pusher sleeve (17) slidably disposed within the sheath (16). The fixed base (25) is provided with a transition block (8). The transition block (8) is fixed to the fixed base (25) by a quick chuck (14). The transition block (8) is provided with a transition through hole (81) that is axially and radially connected. The end of the spindle (13) away from the positioning hole (134) is provided with a pusher through hole (136) that is axially and radially connected. The transition through hole (81) and the pusher through hole (136) are both T-shaped. When the spindle (13) and the transition block (8) are in contact, the transition through hole (81) and the pusher through hole (136) are axially connected. A sealing part is provided between the sheath (16) and the quick chuck (14) of the spindle (13). The pusher sleeve (17) is located on the side where the radial opening of the pusher through hole (136) is away from the transition block (8).

5. The handheld sealing ring assembly device according to claim 4, characterized in that, It also includes a handle (18), the base (1) is fixed on the handle (18), and the handle (18) is provided with a hand guard (21).

6. The handheld sealing ring assembly device according to claim 5, characterized in that, The base (1) is provided with a linear guide (2) for sliding the sliding seat (3). The linear guide (2) is arranged along the length direction of the spindle (13). The base (1) is provided with a control cylinder (15) for controlling the sliding of the sliding seat (3). The piston rod of the control cylinder (15) is connected to the sliding seat (3).

7. The handheld sealing ring assembly device according to claim 6, characterized in that, The handle (18) is provided with a reversing valve (19), which includes an air inlet, a cylinder air supply port and a pusher air supply port. The reversing valve (19) is provided with a main air pipe (22) connected to the air inlet, a cylinder connecting pipe (191) connected to the cylinder air supply port and a pusher connecting pipe (192) connected to the pusher air supply port. The control cylinder (15) includes a cylinder inlet (151) and a cylinder outlet (152). The control cylinder (15) is provided with an outlet pipe (153) that communicates with the cylinder outlet (152). The end of the cylinder connecting pipe (191) away from the reversing valve (19) is connected to the control cylinder (15) and communicates with the cylinder inlet (151). The end of the air outlet pipe (153) away from the control cylinder (15) is connected to the transition block (8), the end of the pusher connecting pipe (192) away from the reversing valve (19) is connected to the transition block (8), and the two radial openings of the transition through hole (81) are respectively connected to the air outlet pipe (153) and the pusher connecting pipe (192).

8. The handheld sealing ring assembly device according to claim 7, characterized in that, The handle (18) is also provided with a trigger (20) for controlling the reversing valve (19), and the trigger (20) is rotatably connected to the handle (18).

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