An assembly for a valve body and a main valve

Abstract

This invention discloses an assembly device for a valve body and a main valve, including a sealing ring assembly mechanism, a conveying mechanism, and a sealing ring feeding mechanism. The sealing ring assembly mechanism includes a placement seat, an elastic component, and a guide rod assembly. A sealing ring is positioned using the placement seat. The guide rod assembly includes a guide rod body that supports the sealing ring during downward movement. The elastic component limits the height of the guide rod body in the absence of external force, allowing the sealing ring to enter the placement seat. After the main valve is placed on the guide rod body, it moves downward under the drive of the conveying mechanism. During downward movement, the guide rod body can open the sealing ring, achieving the assembly of the sealing ring and the main valve. The assembly device can accurately fit a sealing ring with high hardness into the main valve and can precisely place the main valve with the sealing ring in place into the valve body.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic valve processing equipment technology, and in particular to an assembly device for a valve body and a main valve. Background Technology

[0002] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automation systems used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems. Used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. A solenoid valve consists of a valve body and a main valve, with the main valve inserted into the valve body. Before insertion, a sealing ring needs to be fitted onto the main valve. This sealing ring fitting typically uses a synchronously extending and retracting claw mechanism to open the sealing ring, then pushes the opened sealing ring onto the main valve. However, for sealing rings with high hardness, the claw mechanism is difficult to open, causing inconvenience in assembling the valve body and main valve. Furthermore, this claw mechanism has a complex structure and requires high-precision manufacturing processes. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide an assembly device for a valve body and a main valve, which can achieve precise fitting of a sealing ring with high hardness and a main valve, and can accurately place the main valve after fitting the sealing ring into the valve body.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: an assembly device for a valve body and a main valve, wherein the main valve includes a first part and a second part arranged vertically, the diameter of the first part is larger than that of the second part, and the first part has an installation groove; the assembly device includes:

[0005] A sealing ring assembly mechanism includes a placement seat, an elastic component, and a guide rod assembly. The placement seat has two coaxial and interconnected grooves, one larger than the other, extending from top to bottom. The diameter of groove one is larger than the diameter of groove two, and a stepped surface supporting the sealing ring is formed at the connection between groove one and groove two. The guide rod assembly includes a guide rod body that can move vertically within groove one and groove two. The guide rod body includes an upper part and a lower part, which are arranged vertically. The upper part is a cylindrical structure with a diameter not less than the diameter of the first part, and the lower part is a frustum structure. The large circular surface of the frustum structure has the same diameter as the upper part and they are joined together. The upper part has a clearance groove that is coaxial with it and allows the second part to be inserted. The elastic component is used to limit the guide support rod body to a first height position when the guide support rod body is not pressed down. At the first height position, the lower part of the guide support rod body passes through the sealing ring on the step surface. When the guide support rod body is pressed down, the elastic component elastically deforms and allows the guide support rod body to move down to a second height position. At this time, the sealing ring and the mounting groove are aligned and fitted into the mounting groove.

[0006] A transport mechanism for clamping one of the main valves, the transport mechanism placing the main valve onto the guide support body located at a first height position and pressing the guide support body down by the main valve;

[0007] When the guide support rod body moves to the point of separation from the placement seat, the sealing ring feeding mechanism places one of the sealing rings onto the stepped surface.

[0008] The beneficial effects of this invention are as follows:

[0009] The sealing rings are fed one by one by the sealing ring feeding mechanism, and the main valves are fed one by one by the conveying mechanism. The conveying mechanism then cooperates with the sealing ring assembly mechanism to put the sealing rings onto the main valves, thus realizing the assembly of the sealing rings and the main valves.

[0010] A sealing ring is positioned using a placement seat. The guide rod body can open the sealing ring when it moves downwards, while an elastic component limits the height of the guide rod body when there is no external force, facilitating the placement and removal of the guide rod body so that the sealing ring can enter the placement seat. After the main valve is placed on the guide rod body, it moves downwards under the drive of the conveying mechanism. During the downward movement, the guide rod body can open the sealing ring, realizing the assembly of the sealing ring and the main valve. The sealing ring assembly mechanism has a simple structure and does not require an additional opening structure; the sealing ring can be opened simply by the up and down movement of the guide rod body.

[0011] Furthermore, the stepped surface is a circular ring structure. The inner diameter of the stepped surface is larger than the inner diameter of the sealing ring in its natural state, but smaller than the outer diameter of the sealing ring in its natural state. This ensures that the sealing ring is supported by the stepped surface, and the portion of the sealing ring near the inner ring protrudes from the stepped surface and aligns with the groove. The protruding portion of the sealing ring contacts the guide rod body and is supported by the guide rod body.

[0012] Furthermore, the elastic component includes a spring and a guide rod. The guide rod and the second groove are coaxial and can move up and down within the second groove. The lower part has a guide groove that matches the guide rod, extending upwards from its lower surface. When the guide rod body is at a first height position, a portion of the guide rod is inserted into the guide groove. The elastic component provides a restoring force to the guide rod body through the spring. The guide rod and the guide groove of the guide rod body cooperate to limit the initial position of the guide rod body, ensuring the coaxiality of the guide rod body, the guide rod, and the first groove.

[0013] Furthermore, the placement seat also includes a third groove located below the second groove, the second groove and the third groove being connected through a guide hole coaxial with the second groove; the guide rod includes a guide portion passing through the guide hole and a limiting portion located within the third groove, the spring being fixed within the third groove, the lower end of the spring abutting against the bottom of the third groove, and the upper end abutting against the limiting portion.

[0014] Furthermore, the guide strut assembly also includes a lifting gripping part, which includes a lifting drive component and a guide strut gripper connected to the lifting drive component. The lifting drive component can drive the guide strut gripper to move up and down, and the guide strut gripper is used to grip or release the guide strut body. The lifting gripping part is used to move the guide strut body upward to separate it from the placement seat or to place the guide strut body into the placement seat.

[0015] Furthermore, the sealing ring feeding mechanism is located on one side of the placement seat in the first direction. The placement seat is connected to a transverse drive component. Driven by the transverse drive component, the placement seat reciprocates between a first position and a second position along the first direction. The guide rod gripper is located directly above the first position. When the placement seat moves to the second position, the sealing ring feeding mechanism places the sealing ring onto the stepped surface. When the placement seat reaches the second position, it intersects with the guide rod gripper. At this time, the placement seat is within the working area of ​​the sealing ring feeding mechanism, allowing the sealing ring feeding mechanism to place a sealing ring into the placement seat, avoiding interference between the guide rod gripper and the sealing ring gripper in the vertical direction.

[0016] Furthermore, the lateral drive is also connected to a storage seat that moves synchronously with the placement seat. The storage seat has a storage cavity facing downwards from its upper end. When the placement seat is in the second position, the storage seat moves to the first position. Even if the guide support gripper accidentally releases the guide support body, the guide support body will fall into the storage cavity, and the guide support gripper can grab the guide support body again, preventing the guide support body from falling onto the worktable.

[0017] Furthermore, the handling mechanism includes a robotic arm body, a main valve gripper, and a floating assembly connecting the robotic arm body and the main valve gripper. The floating assembly includes a fixed plate, a floating plate, a fixing bolt, and an elastic rubber ring. The fixed plate is fixedly connected to the output end of the robotic arm body. The floating plate is located below the fixed plate and fixedly connected to the main valve gripper. The floating plate has a hole for the screw of the fixing bolt to pass through. The diameter of the floating plate hole is larger than the diameter of the screw of the fixing bolt but smaller than the diameter of the nut of the fixing bolt. The fixing bolt and the fixed plate are threaded together. The elastic rubber ring is located between the floating plate hole and the fixing bolt. The floating assembly can adjust the position of the main valve gripper relative to the output end of the robotic arm body in the horizontal plane to compensate for errors caused by the movement of the robotic arm body and ensure alignment when the main valve and the guide support body are docked.

[0018] Furthermore, the assembly device also includes a conveyor line and a positioning mechanism. The conveyor line is used to transport a carrier on which the valve body is placed, and the positioning mechanism is used to fix the valve body on one of the carriers on the conveyor line. The transport mechanism inserts the main valve with the sealing ring fitted onto it into the placement groove of the valve body positioned by the positioning mechanism.

[0019] Furthermore, the positioning mechanism includes a lifting component and a positioning component. The positioning component includes a positioning plate fixed directly above the lifting component and a second floating plate. The positioning plate has a through hole corresponding to the placement slot. The second floating plate includes a connecting part and a guide part that can be inserted into the placement slot. The guide part and the connecting part both have a second through hole that communicates with the first through hole. The main valve passes through the second through hole and is placed into the placement slot. The connecting part is connected to the positioning plate via the second floating component. The second floating component can adjust the position of the second floating plate relative to the positioning plate in the horizontal plane. The second floating component can fine-tune the position of the second floating plate to ensure that the second through hole on the second floating plate is coaxial with the placement slot. Combined with the first floating component on the handling mechanism, when there are errors in the conveying of the robot body and the conveyor line, the first and second floating components can compensate for these errors, ensuring that the main valve can be accurately inserted into the valve body. Attached Figure Description

[0020] Figure 1 This is an exploded view of the main valve, valve body, and sealing ring in an embodiment of the present invention;

[0021] Figure 2 This is a top view of the assembly device in an embodiment of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the sealing ring assembly mechanism in an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the sealing ring assembly mechanism in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the guide strut body at the first height position in an embodiment of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the guide strut body in an embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional view of the guide strut body in an embodiment of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the conveying mechanism in an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the floating component one in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the sealing ring feeding mechanism in an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the positioning mechanism and the oiling mechanism in an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the positioning component positioning vehicle in an embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the positioning component in an embodiment of the present invention;

[0033] Figure 14 This is a schematic diagram of the structure of the floating component two in an embodiment of the present invention.

[0034] In the picture:

[0035] 1a. Valve body; 11a. Placement slot; 1b. Main valve; 11b. First part; 111b. Mounting slot; 12b. Second part; 1c. Sealing ring;

[0036] 1. Handling mechanism;

[0037] 11. Robotic arm body; 12. Main valve gripper; 13. Floating assembly one; 131. Fixed plate one; 132. Floating plate one; 1321. Floating plate hole one; 133. Fixing bolt one; 134. Elastic rubber ring one; 14. Material tray;

[0038] 2. Sealing ring feeding mechanism;

[0039] 21. Cross-shaped moving platform one; 22. Sealing ring gripper;

[0040] 3. Sealing ring assembly mechanism;

[0041] 31. Placement seat; 311. Slot 1; 312. Slot 2; 313. Stepped surface; 314. Slot 3; 32. Elastic component; 321. Spring; 322. Guide rod; 3221. Guide part; 3222. Limiting part; 33. Guide support rod assembly; 331. Guide support rod body; 3311. Upper part; 33111. Clearance groove; 3312. Lower part; 33121. Guide groove; 332. Lifting gripper; 3321. Lifting drive component 1; 3322. Guide support rod gripper; 34. Lateral movement drive component; 35. Storage seat;

[0042] 4. Conveyor line; 41. Carrier;

[0043] 5. Positioning mechanism;

[0044] 51. Lifting assembly; 52. Positioning assembly; 521. Positioning plate; 5211. Through hole one; 5212. Floating plate hole two; 522. Floating plate two; 5221. Guide part; 5222. Connecting part; 5223. Through hole two; 523. Floating assembly two; 5231. Fixing bolt two; 5232. Elastic rubber ring two; 524. Limiting plate;

[0045] 6. Oiling mechanism;

[0046] 61. Fuel injector; 62. Cross-shaped moving platform II. Detailed Implementation

[0047] 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.

[0048] In the figures below, the Y direction is the first direction, the X direction is the second direction, and the Z direction is the vertical direction.

[0049] The present invention provides an assembly device for a valve body and a main valve, which is used to fit a sealing ring 1c onto the main valve 1b, and then install the main valve 1b with the sealing ring 1c fitted onto it into the valve body 1a.

[0050] See appendix Figure 2 As shown, the assembly device includes a conveying mechanism 1, a sealing ring feeding mechanism 2, and a sealing ring assembly mechanism 3. The sealing ring feeding mechanism 2 is used to place the sealing rings 1c one by one onto the sealing ring assembly mechanism 3. The conveying mechanism 1 is used to convey the main valves 1b one by one to the sealing ring assembly mechanism 3. The sealing rings 1c are fitted onto the main valves 1b at the sealing ring assembly mechanism 3.

[0051] See appendix Figure 1As shown, the main valve 1b includes a first part 11b and a second part 12b arranged vertically. The diameter of the first part 11b is larger than that of the second part 12b, and the outer wall of the first part 11b is provided with an installation groove 111b along the circumferential direction. The sealing ring 1c needs to be installed into the installation groove 111b.

[0052] See appendix Figure 3 As shown, the sealing ring assembly mechanism 3 includes a placement seat 31, an elastic component 32, and a guide strut assembly 33.

[0053] See appendix Figure 4 and attached Figure 5 As shown, the placement base 31 has two coaxial and interconnected grooves, a first groove 311 and a second groove 312, arranged from top to bottom. The diameter of the first groove 311 is larger than the diameter of the second groove 312, and a stepped surface 313 is formed at the connection between the first groove 311 and the second groove 312. The diameter of the second groove 312 is not less than the diameter of the first part 11b. For example, the diameter of the second groove 312 is the same as the diameter of the first part 11b. The stepped surface 313 is used to support the sealing ring 1c. When the sealing ring 1c is placed on the stepped surface 313, the part of the sealing ring 1c near the inner ring will protrude from the stepped surface 313 and align with the second groove 312.

[0054] Guide strut assembly 33 includes a guide strut body 331 that can move up and down within groove one 311 and groove two 312, see appendix. Figure 6 and attached Figure 7 As shown, the guide strut body 331 includes an upper part 3311 and a lower part 3312 arranged vertically. The upper part 3311 is a cylindrical structure, and its diameter is slightly larger than or equal to the diameter of the first part 11b. The lower part 3312 is a frustum structure, and the large circular surface of the frustum structure has the same diameter as the upper part 3311 and is aligned with it. An allowance groove 33111 coaxial with the upper part 3311 is provided on the upper part 3311. The second part 12b of the main valve 1b can be inserted into the allowance groove 33111, so that the lower surface of the first part 11b of the main valve 1b abuts against the upper surface of the upper part 3311. The cooperation of the allowance groove 33111 and the second part 12b can limit the relative position of the main valve 1b and the guide strut body 331, improving their concentricity. When the guide rod body 331 moves upward and separates from the placement seat 31, the sealing ring 1c can be placed from between the guide rod body 331 and the placement seat 31 into the groove 311. When the guide rod body 331 moves downward, the lower part 3312 can open the sealing ring 1c, but the position of the sealing ring 1c is limited by the stepped surface 313 and will not move downward. When the guide rod body 331 and the main valve 1b move downward synchronously until the mounting groove 111b and the sealing ring 1c are aligned, the opened sealing ring 1c is fitted into the mounting groove 111b on the main valve 1b. The diameter of the upper part 3311 can only be slightly larger than the diameter of the first part 11b, that is, the diameter of the upper part 3311 is 2mm-5mm larger than the diameter of the first part 11b.

[0055] The elastic component 32 is used to confine the guide strut body 331 to a position when the guide strut body 331 is not compressed. Figure 5 In the first height position shown, the lower part 3312 of the guide rod body 331 passes through the sealing ring 1c on the stepped surface 313. At this time, the sealing ring 1c is not opened, and the upper part 3311 of the guide rod body 331 is at least partially above the placement seat 31, making it easy for the guide rod body 331 to be removed from the groove 311. When the guide rod body 331 is pressed down by the main valve 1b, the elastic component 32 elastically deforms and allows the guide rod body 331 to move down to the second height position. In the second height position, the mounting groove 111b and the sealing ring 1c are aligned, and the sealing ring 1c is fitted into the mounting groove 111b.

[0056] The conveying mechanism 1 is used to clamp a main valve 1b, place the main valve 1b onto the guide support body 331 located at a first height position, and press the guide support body 331 down by the main valve 1b. See Appendix. Figure 2 As shown, the array of main valves 1b waiting to be fitted with sealing rings 1c is located on the material tray 14, which is within the working area of ​​the conveying mechanism 1.

[0057] When the sealing ring feeding mechanism 2 moves on the guide support rod body 331 and separates from the placement seat 31, it places a sealing ring 1c into the groove 311.

[0058] When the sealing ring 1c and the main valve 1b are assembled, the guide support rod body 331 is first moved up to separate from the placement seat 31. At this time, there is space above the placement seat 31 for the sealing ring feeding mechanism 2 to place the sealing ring 1c into the groove 311. Then the guide rod body 331 moves down and is limited to the first height position by the elastic component 32. At this time, the conveying mechanism 1 clamps a main valve 1b and places the main valve 1b on the guide rod body 331 at the first position height. The first part 11b of the main valve 1b and the upper part 3311 of the guide rod body 331 abut against each other. When the conveying mechanism 1 continues to press down on the main valve 1b, the main valve 1b and the guide rod body 331 simultaneously overcome the elasticity of the elastic component 32 and move down. During the downward movement, the guide rod body 331 expands the sealing ring 1c through its own structure. The sealing ring 1c is limited by the stepped surface 313 and cannot move down. When the mounting groove 111b of the main valve 1b moves down to align with the sealing ring 1c of the stepped surface 313, the sealing ring 1c has been expanded by the guide rod body 331 to a state greater than or equal to the first part 11b. The sealing ring 1c can be fitted onto the mounting groove 111b. At this point, the sealing ring 1c and the main valve 1b are installed. The conveying mechanism 1 moves the main valve 1b with the sealing ring 1c installed to the next station. The guide support rod body 331 is pushed back to the first height position by the elastic component 32. At this time, the upper end of the guide support rod body 331 protrudes upward from the placement seat 31, which makes it easy to grab the guide support rod body 331 and move the guide support rod body 331 upward to separate it from the placement seat 31. At this time, the next sealing ring 1c can be placed, and the next sealing ring 1c and the next main valve 1b can be assembled.

[0059] In this embodiment, the sealing ring 1c is fed one by one by the sealing ring feeding mechanism 2, and the main valve 1b is fed one by one by the conveying mechanism 1. The conveying mechanism 1 then cooperates with the sealing ring assembly mechanism 3 to put the sealing ring 1c onto the main valve 1b, thereby realizing the assembly of the sealing ring 1c and the main valve 1b.

[0060] In the sealing ring assembly mechanism 3, a sealing ring 1c is positioned using a placement seat 31. The guide rod body 331 can open the sealing ring 1c when it moves downwards. The elastic component 32 is used to limit the height position of the guide rod body 331 when there is no external force, facilitating the placement and removal of the guide rod body 331 so that the sealing ring 1c can enter the placement seat 31. After the main valve 1b is placed on the guide rod body 331, it moves downwards under the drive of the conveying mechanism 1. When it moves downwards, the guide rod body 331 can open the sealing ring 1c, realizing the assembly of the sealing ring 1c and the main valve 1b. The sealing ring assembly mechanism 3 in this embodiment has a simple structure and does not require a complex opening structure. Instead, the sealing ring 1c can be opened by the up and down movement of the guide rod body 331.

[0061] The stepped surface 313 is a circular ring structure. The inner diameter of the stepped surface 313 is larger than the inner diameter of the sealing ring 1c in its natural state, but smaller than the outer diameter of the sealing ring 1c in its natural state. This ensures that the sealing ring 1c is supported by the stepped surface 313, and the part of the sealing ring 1c near the inner ring will protrude from the stepped surface 313 and align with the groove 312. The protruding part of the sealing ring 1c will contact the guide rod body 331 and be opened by the guide rod body 331.

[0062] In one embodiment, the width of the step surface 313 is smaller than the width of the sealing ring 1c. In this case, after the sealing ring 1c is placed on the step surface 313, a portion of it will inevitably protrude from the step surface 313.

[0063] See appendix Figure 4 and attached Figure 5 As shown, the elastic component 32 includes a spring 321 and a guide rod 322. The guide rod 322 is coaxial with the groove 312 and can move up and down within the groove 312. The lower part 3312 has a guide groove 33121 that matches the guide rod 322, which is opened from its lower surface upward. When the guide support rod body 331 is at the first height position, part of the guide rod 322 is inserted into the guide groove 33121. When the guide support rod body 331 moves down, the guide rod 322 moves down synchronously and continuously compresses the spring 321.

[0064] The elastic component 32 provides the restoring force of the guide rod body 331 through the spring 321. The guide rod 322 and the guide groove 33121 of the guide rod body 331 cooperate to limit the initial position of the guide rod body 331, ensuring the coaxiality of the guide rod body 331, the guide rod 322 and the groove 311.

[0065] The placement base 31 also includes a third groove 314 located below the second groove 312. The second groove 312 and the third groove 314 are connected by a guide hole coaxial with the second groove 312. The guide rod 322 includes a guide portion 3221 passing through the guide hole and a limiting portion 3222 located within the third groove 314. The spring 321 is fixed within the third groove 314, with its lower end abutting against the bottom of the third groove 314 and its upper end abutting against the limiting portion 3222. The diameter of the guide hole is smaller than that of the limiting portion 3222, and the spring 321 can push the limiting portion 3222 against the bottom of the second groove 312. At this time, the guide rod 322 reaches its initial position, and the upper surface of the guide rod 322 is flush with the upper surface of the placement base 31. When the guide rod 322 moves downward, the spring 321 can be continuously compressed.

[0066] In this embodiment, the elastic component 32 can, on the one hand, position and move up and down the guide support rod body 331, and on the other hand, allow the guide support rod body 331 to return to the first height position, so that the guide support rod body 331 can be removed from the top of the placement seat 31.

[0067] In one embodiment, the guide rod 322 includes a constricted portion at the top. The constricted structure facilitates the insertion of the guide rod 322 into the guide groove 33121. Even if there is a slight positional offset between the guide rod 322 and the guide support rod body 331, the guide rod 322 can be quickly inserted into the guide groove 33121 due to the structure of the constricted portion.

[0068] See appendix Figure 3 and attached Figure 4 As shown, the guide strut assembly 33 also includes a lifting gripper 332. The lifting gripper 332 includes a lifting drive component 3321 and a guide strut gripper 3322 connected to the lifting drive component 3321. The lifting drive component 3321 can drive the guide strut gripper 3322 to move up and down, and the guide strut gripper 3322 can grip or release the guide strut body 331. The lifting drive component 3321 first moves the guide support rod gripper 3322 holding the guide support rod body 331 upward, separating the guide support rod body 331 from the placement seat 31. After the sealing ring 1c is placed into the placement seat 31, the lifting drive component 3321 then moves the guide support rod gripper 3322 holding the guide support rod body 331 downward. After the guide rod 322 is inserted into the guide groove 33121, the guide support rod gripper 3322 releases the guide support rod body 331. At this time, the main valve 1b can push the guide support rod body 331 downward under the drive of the conveying mechanism 1. After the sealing ring 1c and the main valve 1b are assembled, the guide support rod gripper 3322 clamps the guide support rod body 331 at the first height position and moves downward under the drive of the lifting drive component 3321 until the guide support rod body 331 separates from the placement seat 31.

[0069] In one embodiment, the sealing ring feeding mechanism 2 is located on one side of the placement seat 31 in the first direction, see Appendix Figure 10 As shown, the sealing ring feeding mechanism 2 includes a vibratory feeder, a cross-shaped moving platform 21, and sealing ring grippers 22. The vibratory feeder is used to transport the sealing rings 1c one by one to the feeding station. The sealing ring grippers 22 are fixedly connected to the cross-shaped moving platform 21. The sealing ring grippers 22 can grasp the sealing rings 1c at the feeding station and place them into the placement seat 31. The cross-shaped moving platform 21 is used to drive the sealing ring grippers 22 to move along a first direction and a vertical direction.

[0070] In order for the placement seat 31 to reach the operating area of ​​the sealing ring gripper 22, the placement seat 31 can also move in the first direction, see Appendix Figure 3As shown, the placement seat 31 is connected to a transverse drive 34. Under the drive of the transverse drive 34, the placement seat 31 reciprocates between a first position and a second position along a first direction. The guide support claw 3322 is located directly above the first position. When the placement seat 31 is in the first position, the guide support body 331 can be placed into the placement seat 31. The second position is located on the side of the guide support assembly 33 close to the sealing ring feeding mechanism 2. When the placement seat 31 reaches the second position, it intersects with the guide support claw 3322. At this time, the placement seat 31 is within the working area of ​​the sealing ring feeding mechanism 2, and the sealing ring feeding mechanism 2 can place a sealing ring 1c into the placement seat 31.

[0071] In this embodiment, the placement seat 31 can move between the first position and the second position to avoid interference between the guide support claw 3322 and the sealing ring claw 22 in the vertical direction, which facilitates the loading of the sealing ring 1c.

[0072] In one embodiment, the transverse drive 34 is also connected to a storage seat 35 that moves synchronously with the placement seat. The storage seat 35 has a storage cavity facing downward from its upper end. When the placement seat 31 is in the second position, the storage seat 35 moves to the first position, which is directly below the guide support claw 3322. At this time, even if the guide support claw 3322 accidentally releases the guide support body 331, the guide support body 331 can fall into the storage cavity. When the guide support body 331 falls into the storage cavity, the upper end of the guide support body 331 extends out of the storage seat 35, and the guide support claw 3322 can grab the guide support body 331 again, avoiding the problem of the guide support body 331 falling onto the worktable.

[0073] See appendix Figure 8 As shown, the handling mechanism 1 includes a robot arm body 11 and a main valve gripper 12. The robot arm body 11 is a four-axis robot arm, and the main valve gripper 12 is used to grip a main valve 1b. The main valve gripper 12 moves in space under the drive of the robot arm body 11.

[0074] Minor machining errors exist between the main valves 1b, and relying solely on the robot arm body 11 to move the main valves 1b and insert them into the guide rod body 331 may cause misalignment between the main valves 1b and the guide rod body 331. In this case, the main valves 1b and the guide rod body 331 may be misaligned, and they cannot be properly connected. In one embodiment, the handling mechanism 1 further includes a floating component 13. The main valve gripper 12 is connected to the output end of the robot arm body 11 through the floating component 13. The floating component 13 can adjust the position of the main valve gripper 12 relative to the output end of the robot arm body 11 in the horizontal plane to compensate for the errors caused by the movement of the robot arm body 11 and ensure that the main valves 1b and the guide rod body 331 are aligned when they dock.

[0075] See appendix Figure 9As shown, the floating assembly 13 includes a fixed plate 131, a floating plate 132, fixed bolts 133, and elastic rubber rings 134. The fixed plate 131 is fixedly connected to the output end of the robot body 11. The floating plate 132 is located below the fixed plate 131 and is fixedly connected to the main valve gripper 12. The position of the floating plate 132 relative to the fixed plate 131 in the horizontal plane is adjustable. Multiple fixed bolts 133 are provided. The floating plate 132 has a floating plate hole 1321 through which the screw of the fixed bolt 133 passes. The diameter of the floating plate hole 1321 is larger than the diameter of the screw of the fixed bolt 133 but smaller than the diameter of the nut of the fixed bolt 133. The fixed bolts 133 and the fixed plate 131 are threadedly connected. The elastic rubber rings 134 correspond one-to-one with the fixed bolts 133 and are located between the floating plate hole 1321 and the fixed bolts 133.

[0076] The fixing bolt 133 positions the fixed plate 131 and the floating plate 132 in the vertical direction relative to each other. The floating component 13 uses the elasticity of the elastic rubber ring 134 to adjust the position of the floating plate 132. When the floating plate 132 needs to be finely adjusted, an external force pushes the floating plate 132 to move relative to the fixed plate 131. When the floating plate 132 moves, it will squeeze the elastic rubber ring 134 to deform. The deformation range of the elastic rubber ring 134 is the adjustable range of the floating plate 132. When the external force on the floating plate 132 is removed, the elastic rubber ring 134 returns to its original state, and the floating plate 132 can also quickly return to its original position.

[0077] In this embodiment, the added floating component 13 allows the main valve 1b to be inserted into the guide rod body 331 by the main valve 1b. Even if there is a slight error between the main valve 1b and the guide rod body 331, the guide rod body 331 can still be finely adjusted by the main valve 1b pushing the floating plate 132 to ensure the connection between the main valve 1b and the guide rod body 331.

[0078] For example, there are three fixing bolts 133, which are arranged in a triangular pattern.

[0079] See appendix Figure 2 As shown, the assembly device also includes a conveyor line 4 and a positioning mechanism 5. The conveyor line 4 is used to convey a carrier 41 on which a valve body 1a is placed along the second direction. The positioning mechanism 5 is used to fix the valve body 1a on a carrier 41 on the conveyor line 4. The transport mechanism 1 inserts the main valve 1b with a sealing ring 1c into the valve body 1a positioned by the positioning mechanism 5.

[0080] See appendix Figure 1 As shown, the valve body 1a has a placement groove 11a with an opening at the top, and the main valve 1b needs to be installed into the placement groove 11a.

[0081] See appendix Figure 11 As shown, the positioning mechanism 5 includes a lifting component 51 and a positioning component 52. The lifting component 51 is located below the conveyor line 4. The lifting component 51 is used to lift the carrier 41 upward so that the carrier 41 is separated from the conveyor line 4. At this time, the carrier 41 will no longer move with the conveyor line 4.

[0082] See appendix Figure 12 As shown, the positioning assembly 52 includes a positioning plate 521 fixed directly above the lifting assembly 51. The positioning plate 521 can press down on the valve body 1a to position the valve body 1a. The positioning plate 521 has a through hole 5211 corresponding to the placement groove 11a. The diameter of the through hole 5211 is larger than the diameter of the placement groove 11a. The main valve 1b passes through the through hole 5211 and enters the placement groove 11a.

[0083] When the conveyor line 4 is conveying the carrier 41, due to precision limitations, it may not be able to stop the carrier 41 exactly at the coaxial position of the through hole and the placement groove 11a. At this time, when the lifting component 51 lifts the carrier 41, the valve body 1a pressed by the positioning mechanism 5 cannot be properly aligned with the main valve 1b held by the transport mechanism 1.

[0084] In one embodiment, see Appendix Figure 13 As shown, the positioning component 52 also includes a second floating plate 522. The second floating plate 522 is connected to the positioning plate 521 through the second floating component 523. The second floating plate 522 includes a connecting part 5222 and a guide part 5221 that can be inserted into the placement groove 11a. The guide part 5221 has a frustum structure with the small circular surface facing downward. The guide part 5221 and the connecting part 5222 are provided with a second through hole 5223 that communicates with the first through hole 5211. The main valve 1b passes through the second through hole 5223 and is placed into the placement groove 11a. The second floating component 523 can adjust the position of the second floating plate 522 relative to the positioning plate 521 in the horizontal plane. When the carrier 41 moves upward, the lower part of the guide part 5221 first enters the placement groove 11a. Through the cooperation between the placement groove 11a and the side wall of the guide part 5221, even if the valve body 1a has a slight offset, the valve body 1a can push the second floating plate 522 to move in the horizontal plane, ensuring that the second through hole 5223 and the placement groove 11a are coaxial. At this time, the floating component 13 on the conveying mechanism 1 adjusts the position of the main valve 1b, so that the main valve 1b placed in the second through hole 5223 is always coaxial with the placement groove 11a, avoiding the error caused by the conveying mechanism 1 and the conveyor line 4 moving according to the program, which would cause the main valve 1b and the placement groove 11a to be misaligned and unable to be placed in the placement groove 11a.

[0085] When the main valve 1b enters the through hole 2 5223, the main valve 1b also enters the placement groove 11a. The lifting component 51 then drives the carrier 41 to move down, and the main valve 1b and valve body 1a move downward and separate from the floating plate 2 522.

[0086] See appendix Figure 14 As shown, the floating component 523 includes a fixing bolt 5231 and an elastic rubber ring 5232. Multiple fixing bolts 5231 are provided. The positioning plate 521 has a floating plate hole 5212 through which the screw of the fixing bolt 5231 passes. The diameter of the floating plate hole 5212 is larger than the diameter of the screw of the fixing bolt 5231 but smaller than the diameter of the nut of the fixing bolt 5231. The fixing bolt 5231 and the floating plate 522 are threaded together. The elastic rubber ring 5232 corresponds one-to-one with the fixing bolt 5231, and is located between the floating plate hole 5212 and the fixing bolt 5231. The floating component 2 523 and the floating component 1 13 operate on the same principle. They also use the deformation of the elastic rubber ring 2 5232 to adjust the position of the floating plate 2 522 relative to the positioning plate 521 on the horizontal plane, and use the fixing bolt 2 5231 to position the floating plate 2 522 and the positioning plate 521 in the vertical direction.

[0087] For example, four fixing bolts 2 5231 are provided, and the four fixing bolts 2 5231 are distributed in a square.

[0088] See appendix Figure 12 As shown, the positioning component 52 also includes a limiting plate 524 fixedly connected to the positioning plate 521. The limiting plate 524 can abut against the carrier 41 to limit the upward movement height of the carrier 41.

[0089] In this embodiment, when assembling the main valve 1b and the valve body 1a, a second floating component 523 is set on the positioning component 52 to finely adjust the position of the second floating plate 522, ensuring that the second through hole 5223 on the second floating plate 522 and the placement groove 11a are coaxial. In conjunction with the first floating component 13 on the conveying mechanism 1, when there are errors in the conveying of the robot body 11 and the conveying line 4, the first floating component 13 and the second floating component 523 can also compensate for these errors, ensuring that the main valve 1b can be accurately inserted into the valve body 1a.

[0090] The lifting assembly 51 includes a lifting cylinder and a lifting plate that is raised and lowered by the lifting cylinder. The lifting plate can carry the carrier 41 and lift the carrier 41 upward.

[0091] In one embodiment, the assembly apparatus further includes an oiling mechanism 6 located at the positioning component 52, which applies oil to the valve body 1a before the main valve 1b is inserted into the valve body 1a.

[0092] See appendix Figure 11As shown, the oiling mechanism 6 includes an oil nozzle 61 coaxial with the through hole 5211. The oil nozzle 61 can be raised and lowered under the drive of the cross moving platform 62. When the oil nozzle 61 moves down and inserts into the placement groove 11a of the valve body 1a positioned by the positioning component 52, the oil nozzle 61 sprays oil to coat the inner wall of the placement groove 11a.

[0093] In one embodiment, a method for assembling a valve body 1a and a main valve 1b is also disclosed, including the assembly steps of the main valve 1b and the sealing ring 1c, specifically including:

[0094] The transverse drive 34 drives the placement seat 31 to move to the second position, and the sealing ring 1c conveying mechanism 1 places a sealing ring 1c into the groove 311 of the placement seat 31.

[0095] The lateral drive 34 drives the placement seat 31 to move to the first position. At this time, the lifting drive 3321 drives the guide support rod body 331 held by the guide support rod gripper 3322 to move down and place the guide support rod body 331 into the placement seat 31. At this time, the guide support rod body 331 is limited to the first height position by the elastic component 32.

[0096] The conveying mechanism 1 clamps a main valve 1b and inserts the main valve 1b into the guide support body 331 at the first height position.

[0097] The conveying mechanism 1 pushes the guide rod body 331 downward through the main valve 1b. During the downward movement, the guide rod body 331 opens the sealing ring 1c. When the guide rod body 331 moves down to the second height position, the mounting groove 111b of the main valve 1b and the sealing ring 1c are aligned, and the sealing ring 1c is fitted into the mounting groove 111b.

[0098] The conveying mechanism 1 removes the main valve 1b after the sealing ring 1c is fitted. The guide support rod body 331 is reset to the first height position under the drive of the elastic component 32. The guide support rod gripper 3322 clamps the guide support rod body 331 reset to the first height position and moves it upward until the guide support rod body 331 and the placement seat 31 are separated.

[0099] The above steps complete the connection of one main valve 1b and sealing ring 1c. Repeat the above steps to complete the connection of multiple main valves 1b and multiple sealing rings 1c.

[0100] The assembly method of valve body 1a and main valve 1b also includes the assembly steps of main valve 1b and valve body 1a, specifically including:

[0101] While the main valve 1b and sealing ring 1c are being assembled, the conveyor line 4 transports the carrier 41 to the positioning mechanism 5, and the lifting assembly 51 lifts the carrier 41 and positions the valve body 1a through the positioning assembly 52.

[0102] The oiling mechanism 6 applies oil to the valve body 1a.

[0103] The transport mechanism 1 transports the main valve 1b, which is fitted with the sealing ring 1c, to the positioning assembly 52 and places it into the valve body 1a positioned by the positioning assembly 52.

[0104] 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. An assembly device for a valve body and a main valve, wherein the main valve comprises a first part and a second part arranged vertically, the diameter of the first part being larger than the diameter of the second part, and the first part having a mounting groove, characterized in that: The assembly device includes: A sealing ring assembly mechanism includes a placement seat, an elastic component, and a guide rod assembly. The placement seat has two coaxial and interconnected grooves, one larger than the other, forming a stepped surface at the connection between the two grooves to support the sealing ring. The guide rod assembly includes a guide rod body that can move vertically within the grooves. The guide rod body comprises an upper part and a lower part, the upper part being cylindrical with a diameter not less than that of the first part, and the lower part being a frustum-shaped structure. The large circular surface of the frustum structure has the same diameter as the upper part and is connected. The upper part has a clearance groove that is coaxial with it and allows the second part to be inserted. The elastic component is used to limit the guide support rod body to a first height position when the guide support rod body is not pressed down. At the first height position, the lower part of the guide support rod body passes through the sealing ring on the step surface. When the guide support rod body is pressed down, the elastic component elastically deforms and allows the guide support rod body to move down to a second height position. At this time, the sealing ring and the mounting groove are aligned and fitted into the mounting groove. A transport mechanism for clamping one of the main valves, the transport mechanism placing the main valve onto the guide support body located at a first height position and pressing the guide support body down by the main valve; When the guide support rod body moves to the point of separation from the placement seat, the sealing ring feeding mechanism places one of the sealing rings onto the stepped surface.

2. The assembly apparatus according to claim 1, characterized in that: The stepped surface is a circular ring structure. The inner diameter of the stepped surface is larger than the inner diameter of the sealing ring in its natural state, and smaller than the outer diameter of the sealing ring in its natural state.

3. The assembly apparatus according to claim 1, characterized in that: The elastic component includes a spring and a guide rod. The guide rod is coaxial with the second groove and can move up and down within the second groove. The lower part has a guide groove that matches the guide rod from its lower surface upward. When the guide rod body is at the first height position, part of the guide rod is inserted into the guide groove.

4. The assembly apparatus according to claim 3, characterized in that: The placement seat also includes a third groove located below the second groove, and the second groove and the third groove are connected through a guide hole coaxial with the second groove; The guide rod includes a guide portion passing through the guide hole and a limiting portion located within the groove three. The spring is fixed within the groove three, with its lower end abutting against the bottom of the groove three and its upper end abutting against the limiting portion.

5. The assembly apparatus according to claim 1, characterized in that: The guide strut assembly further includes a lifting gripping part, which includes a lifting drive component and a guide strut gripper connected to the lifting drive component. The lifting drive component can drive the guide strut gripper to move up and down, and the guide strut gripper is used to grip or release the guide strut body.

6. The assembly apparatus according to claim 5, characterized in that: The sealing ring feeding mechanism is located on one side of the placement seat in the first direction. The placement seat is connected to a transverse drive. The placement seat moves back and forth between a first position and a second position along the first direction under the drive of the transverse drive. The guide support claw is located directly above the first position. When the placement seat moves to the second position, the sealing ring feeding mechanism places the sealing ring on the stepped surface.

7. The assembly apparatus according to claim 6, characterized in that: The transverse drive is also connected to a storage seat that moves synchronously with the placement seat. The storage seat has a storage cavity facing downwards from its upper end. When the placement seat is in the second position, the storage seat moves to the first position.

8. The assembly apparatus according to claim 1, characterized in that: The handling mechanism includes a robotic arm body, a main valve gripper, and a floating assembly connecting the robotic arm body and the main valve gripper. The floating component includes a fixed plate, a floating plate, a fixing bolt, and an elastic rubber ring. The fixed plate is fixedly connected to the output end of the robot body. The floating plate is located below the fixed plate and is fixedly connected to the main valve gripper. The floating plate has a hole for the screw of the fixing bolt to pass through. The diameter of the hole is larger than the diameter of the screw of the fixing bolt and smaller than the diameter of the nut of the fixing bolt. The fixing bolt and the fixed plate are threaded together. The elastic rubber ring is located between the hole and the fixing bolt.

9. The assembly apparatus according to any one of claims 1-8, characterized in that: The assembly device also includes a conveyor line and a positioning mechanism. The conveyor line is used to transport a carrier on which a valve body is placed. The positioning mechanism is used to fix the valve body on one of the carriers on the conveyor line. The transport mechanism inserts the main valve with the sealing ring fitted into the placement groove of the valve body positioned by the positioning mechanism.

10. The assembly apparatus according to claim 9, characterized in that: The positioning mechanism includes a lifting component and a positioning component. The positioning component includes a positioning plate fixed directly above the lifting component and a second floating plate. The positioning plate has a through hole corresponding to the placement slot. The second floating plate includes a connecting part and a guide part that can be inserted into part of the placement slot. The guide part and the connecting part have a through hole that communicates with the first through hole. The main valve passes through the second through hole and is placed into the placement slot. The connecting part is connected to the positioning plate through the second floating component. The second floating component can adjust the position of the second floating plate relative to the positioning plate in the horizontal plane.

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