Valve seat assembly press fitting apparatus

Abstract

The application discloses a valve seat assembly press-fitting equipment, which comprises a conveying mechanism and a first press-fitting mechanism, a welding mechanism and a second press-fitting mechanism arranged in sequence along the conveying direction of the conveying mechanism; the conveying mechanism comprises a conveying line and a tray controlled to move by the conveying line; the first press-fitting mechanism comprises a first frame body, a clamping unit and a press-fitting unit; the clamping unit is used for placing the valve seat on the tray on a static iron core; the press-fitting unit is used for press-fitting and assembling the valve seat and the static iron core; the welding mechanism comprises a transfer unit and a welding unit; the second press-fitting mechanism comprises a second frame body and a fine press unit; the fine press unit controls the valve rod height by pressing a guide sleeve in the valve seat, so as to adjust the distance between the top end of the valve rod and the top end of the valve seat; the application can solve the problems of low production efficiency and poor assembly consistency in the process of press-fitting, welding and fine adjustment of the valve seat and the static iron core of the damping valve.

Description

Technical Field

[0001] This invention relates to the field of damping valves, and more specifically to a valve seat assembly press-fitting device. Background Technology

[0002] As a core component of automotive adaptive suspension systems, the assembly precision of damping valves directly affects vehicle stability and comfort. Currently, key processes such as the pressing and welding of valve seats and stationary iron cores, as well as the fine-tuning of valve stem height, rely heavily on manual or semi-automated equipment in a decentralized manner. This results in low production efficiency and poor assembly consistency, making it difficult to meet the demands of high-volume, high-stability production. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a valve seat assembly press-fitting device.

[0004] To achieve the above objectives, the technical solution adopted by the present invention includes a conveying mechanism and a first pressing mechanism, a welding mechanism and a second pressing mechanism arranged sequentially along the conveying direction of the conveying mechanism; The conveying mechanism includes a conveyor line and a pallet whose movement is controlled by the conveyor line; The first pressing mechanism includes a first frame and a clamping unit and a pressing unit disposed on the first frame. The clamping unit is used to place the valve seat on the tray onto the stationary iron core, and the pressing unit is used to press and assemble the valve seat and the stationary iron core. The welding mechanism includes a transfer unit and a welding unit. The transfer unit is used to grab the valve seat and stationary iron core that have been pressed together on the tray and transfer them to the welding unit. The welding unit is used to weld the connection between the valve seat and the stationary iron core. The second pressing mechanism includes a second frame and a precision pressing unit disposed on the second frame. The precision pressing unit controls the height of the valve stem and adjusts the distance between the top of the valve stem and the top of the valve seat by pressing down the guide sleeve inside the valve seat.

[0005] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, the clamping unit includes a first gripper cylinder and a first power device for controlling the vertical or horizontal movement of the first gripper cylinder; the pressing unit includes a pressure rod and a second power device for controlling the pressure rod to move in the vertical direction.

[0006] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, the transfer unit includes a third power device, a support rod controlled by the third power device to lift and rotate, and a second gripper cylinder located at both ends of the support rod; the welding unit includes a clamping device for clamping the stationary iron core, a fourth power device for controlling the clamping device to rotate circumferentially, and a welding head for welding the connection between the stationary iron core and the valve seat.

[0007] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, the precision pressing unit includes a support plate that is slidably mounted on the second frame in a vertical direction, a pressure plate connected to the underside of the support plate by an elastic element, a pressing member disposed on the support plate and having its bottom end passing through the pressure plate, and a fourth power device for controlling the lifting and lowering of the support plate.

[0008] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, a contact displacement sensor is provided on the press plate, and the contact displacement sensor is used to detect the distance between the press plate and the bearing plate.

[0009] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, the press-fitting component includes a diameter enlargement portion and a rod portion. The diameter enlargement portion has an accommodating space for accommodating a laser displacement sensor, and the rod portion has a through hole along its axial direction.

[0010] In the preferred embodiment of the valve seat assembly pressing equipment described above, a lifting mechanism is further provided at the first pressing mechanism and the second pressing mechanism. The lifting mechanism is used to lift the pallet that is conveyed by the conveyor line to the first pressing mechanism or the second pressing mechanism, so that the pallet is removed from the conveyor line. The lifting mechanism includes a base plate, a fifth power device disposed on the base plate, a lifting plate controlled by the fifth power device to rise and fall, and a support member that can extend between the lifting plate and the base plate.

[0011] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, the upper part of the tray is provided with a first carrier for placing the valve seat and a second carrier for placing the stationary iron core.

[0012] In the preferred embodiment of the valve seat assembly press-fitting equipment described above, a spring feeding mechanism is further provided on the side of the conveying mechanism and located upstream of the first press-fitting mechanism. The spring feeding mechanism is used to feed and fill the reset spring into the stationary iron core. The spring feeding mechanism includes a vibratory plate and a clamping module. The clamping module is used to grab the reset spring vibrated and conveyed by the vibratory plate and place it into the stationary iron core on the tray.

[0013] In the preferred technical solution of the above-mentioned valve seat assembly press-fitting equipment, a visual inspection mechanism is also provided on the side of the conveying mechanism and located between the welding mechanism and the second press-fitting mechanism. After the welding mechanism finishes welding the valve seat and the stationary iron core, the conveying line can transport the valve seat and the stationary iron core to the visual inspection mechanism, so that the visual inspection mechanism can take pictures and inspect the surface of the weld joint of the two.

[0014] The beneficial effects of this invention are that, by combining a conveyor line with a first pressing mechanism, a welding mechanism and a second pressing mechanism, this application realizes fully automated production of damping valves from pressing the valve seat and the stationary iron core together, welding the magnetic shielding ring to precisely adjusting the valve stem height, effectively solving the problems of low efficiency, poor consistency and weak controllability of core parameters caused by traditional decentralized operations. Attached Figure Description

[0015] Figure 1 This is the front view of the damping valve; Figure 2 This is a cross-sectional view of a damping valve. Figure 3 This is the front view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 The connection between the first pressing mechanism and the lifting mechanism Figure 1 ; Figure 6 The connection between the first pressing mechanism and the lifting mechanism Figure 2 ; Figure 7 This diagram shows the connection between the welding mechanism and the conveyor line. Figure 8 This is the front view of the welding mechanism; Figure 9 The connection between the second pressing mechanism and the lifting mechanism Figure 1 ; Figure 10 The connection between the second pressing mechanism and the lifting mechanism Figure 2 ; Figure 11 This is the front view of the spring feeding mechanism; Figure 12 This is the main view of the visual inspection agency.

[0016] In the picture: Damping valve 10, valve seat 101, magnetic shielding ring 102, stationary iron core 103, valve stem 104, moving iron core 105, guide sleeve 106, positioning seat 107, positioning spring 108, return spring 109; Conveying mechanism 1, conveyor line 11, pallet 12; First pressing mechanism 2, first frame 21, clamping unit 22, first gripper cylinder 221, first power unit 222, pressing unit 23, pressure rod 231, second power unit 232; Welding mechanism 3, transfer unit 31, third power unit 311, support rod 312, second gripper cylinder 313, welding unit 32, clamping device 321, fourth power unit 322, welding head 323; Second pressing mechanism 4, second frame 41, precision pressing unit 42, bearing plate 421, elastic element 422, pressure plate 423, pressing part 424, contact displacement sensor 43, laser displacement sensor 44; Lifting mechanism 5, base plate 51, fifth power unit 52, lifting plate 53, support component 54; Spring feeding mechanism 6, vibratory feeder 61, clamping module 62, first three-axis module 621; 7. Visual inspection mechanism; 71. Visual camera; 72. Second and third axis module. Detailed Implementation

[0017] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0018] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] See Figure 1 , Figure 2 The workpiece processed by the valve seat assembly press-fitting equipment of this application is a damping valve 10 (CDC valve). The damping valve 10 includes a valve seat 101, a magnetic shielding ring 102, a stationary iron core 103, a valve stem 104, a moving iron core 105, a guide sleeve 106, a positioning seat 107, a positioning spring 108, and a return spring 109. The guide sleeve 106 is interference-fitted into the through hole of the valve seat 101. The magnetic shielding ring 102 is press-fitted onto the upper part of the stationary iron core 103. A receiving groove is provided in the lower part of the stationary iron core 103. The positioning seat 107 is installed in the receiving groove of the stationary iron core 103. The moving iron core 105 is installed in the stationary iron core 103. The valve stem 104 is installed on the moving iron core 105 and the two are coaxial. The valve stem 104 passes through the guide sleeve 106. A positioning spring 108 is installed between the moving iron core 105 and the positioning seat 107. A return spring 109 is provided between the moving iron core 105 and the guide sleeve 106.

[0021] See Figures 1 to 12 The valve seat assembly pressing device of the present invention includes a conveying mechanism 1 and a first pressing mechanism 2, a welding mechanism 3 and a second pressing mechanism 4 arranged sequentially along the conveying direction of the conveying mechanism 1.

[0022] See Figure 3 , Figure 4 , Figure 7 The conveying mechanism 1 includes a conveyor line 11 and a tray 12 that is controlled to move by the conveyor line 11. The upper part of the tray 12 is provided with a first carrier for placing a valve seat 101 and a second carrier for placing a stationary iron core 103. By controlling the movement of the tray 12, the conveying mechanism 1 can move the stationary iron core 103 and the valve seat 101 placed on it to the corresponding processing position.

[0023] See Figures 3 to 6 The first pressing mechanism 2 includes a first frame 21, a clamping unit 22 and a pressing unit 23 disposed on the first frame 21. The first frame 21 spans across the conveyor line 11. The clamping unit 22 and the pressing unit 23 are positioned on the first frame 21 above the conveyor line 11. The clamping unit 22 can place the valve seat 101 supported by the first carrier on the stationary iron core 103 supported by the second carrier to achieve positioning before pressing and assembly. The pressing unit 23 can press down the positioned valve seat 101 so that the valve seat 101 and the magnetic isolation ring 102 on the stationary iron core 103 can be pressed and assembled.

[0024] See Figure 3 , Figure 4 , Figure 7 , Figure 8 The welding mechanism 3 is located on the side of the conveyor line 11. The welding mechanism 3 includes a transfer unit 31 and a welding unit 32. The transfer unit 31 can clamp the pressed damping valve 10 supported on the tray 12 and transfer it to the welding unit 32. The welding unit 32 can weld the outer surface of the connection between the magnetic shielding ring 102 on the stationary iron core 103 and the valve seat 101 to further improve the quality of the damping valve 10 after assembly.

[0025] See Figure 3 , Figure 9 , Figure 10 The second pressing mechanism 4 includes a second frame 41 and a precision pressing unit 42 disposed on the second frame 41. The precision pressing unit 42 can press down the guide sleeve 106, which is interference-fitted in the through hole of the valve seat 101, so that the guide sleeve 106 can press down the return spring 109, and the return spring 109 can press down the moving iron core 105, thereby controlling the valve stem 104 to move down, so as to control the distance between the top of the valve stem 104 and the top of the valve seat 101. With this arrangement, the position of the valve stem 104 in the damping valve 10 can be precisely adjusted.

[0026] Specifically, when processing the damping valve 10, the valve seat 101 is first placed on the first carrier of the tray 12, and the stationary iron core 103 is placed on the second carrier of the tray 12. The tray 12 is then transported to the first pressing mechanism 2 by the conveyor line 11. The clamping unit 22 clamps the valve seat 101 and places it on the stationary iron core 103. The pressing unit 23 then presses the valve seat 101 and the magnetic shielding ring 102 on the stationary iron core 103 together. Afterward, the conveyor line 11 transports the tray 12 to the welding mechanism 3, and the transfer unit 31 transfers the pressed damping valve 10 to the welding mechanism 3. The damping valve 10 is taken out of the tray 12 and transferred to the welding unit 32. The welding unit 32 is used to weld the connection between the valve seat 101 and the magnetic shielding ring 102. After welding, the damping valve 10 is transported back to the tray 12 by the transfer unit 31. The conveyor line 11 transports the tray 12 to the second pressing mechanism 4. The precision pressing unit 42 presses the damping valve 10 onto the tray 12 and presses down the guide sleeve 106 inside the valve seat 101 to control the downward pressure on the valve stem 104, thereby controlling the distance between the top of the valve stem 104 and the top of the valve seat 101.

[0027] In one or more embodiments, the clamping unit 22 includes a first gripper cylinder 221 and a first power device 222 for controlling the vertical or horizontal movement of the first gripper cylinder 221; the pressing unit 23 includes a pressing rod 231 and a second power device 232 for controlling the vertical movement of the pressing rod 231.

[0028] See Figure 5 , Figure 6 The first power unit 222 includes a lifting cylinder and a telescopic cylinder. The lifting cylinder is mounted on the first frame 21, and the telescopic cylinder is mounted on the extended end of the lifting cylinder. The telescopic cylinder is horizontally positioned, and the first gripper cylinder 221 is mounted on the extended end of the telescopic cylinder. By controlling the lifting cylinder to raise and lower the telescopic cylinder and controlling the telescopic cylinder to move the first gripper cylinder 221 laterally, the first gripper cylinder 221 can grip and move the valve seat 101 on the tray 12. The clamping unit 22 also includes a positioning rod on the first gripper cylinder 221. The positioning rod is located in the middle of the two grippers of the first gripper cylinder 221. When the first gripper cylinder 221 grips the valve seat 101, the positioning rod first passes through the valve seat 101 to locate the position of the valve seat 101, thereby improving the accuracy of gripping and transferring the valve seat 101.

[0029] See Figure 5 , Figure 6The second power device 232 can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder; the pressure rod 231 is installed on the drive end of the second power device 232. After the clamping unit 22 clamps and transfers the valve seat 101 to the stationary iron core 103, the second power device 232 controls the pressure rod 231 to move down, so that the pressure rod 231 presses down the valve seat 101, thereby realizing the connection between the valve seat 101 and the magnetic isolation ring 102 on the stationary iron core 103.

[0030] In one or more embodiments, the transfer unit 31 includes a third power device 311, a support rod 312 controlled by the third power device 311 to lift and rotate, and a second gripper cylinder 313 located at both ends of the support rod 312; the welding unit 32 includes a clamping device 321 for clamping the stationary iron core 103, a fourth power device 322 for controlling the clamping device 321 to rotate circumferentially, and a welding head 323 for welding the connection between the stationary iron core 103 and the valve seat 101.

[0031] See Figure 7 , Figure 8 The third power unit 311 can be a motor controlled by a cylinder for lifting. The support rod 312 is installed on the drive end of the motor, and the two second gripper cylinders 313 are respectively installed on both ends of the support rod 312.

[0032] See Figure 7 , Figure 8 The clamping device 321 is mounted on the slide rail. The clamping device 321 is controlled by the drive device to move along the slide rail, so that the clamping device 321 is close to the transfer unit 31 or the welding head 323. The clamping device 321 can be a gripper cylinder controlled by a servo motor.

[0033] Specifically, when welding the press-fitted damping valve 10, the second gripper cylinder 313 at one end of the support rod 312 is used to clamp the damping valve 10. The third power device 311 controls the second gripper cylinder 313 and the damping valve 10 to lift and rotate, so that the damping valve 10 is directly above the clamping device 321. The third power device 311 controls the damping valve 10 to descend, so that the clamping device 321 can clamp the damping valve 10. Then, the drive device sends the damping valve 10 to the welding head 323, and the clamping device 321 controls the damping valve 10 to rotate, so that the welding head 323 can fully weld the connection between the valve seat 101 and the magnetic shielding ring 102. After the welding is completed, the transfer unit 31 transports the damping valve 10 back to the tray 12.

[0034] In one or more embodiments, the precision pressing unit 42 includes a support plate 421 slidably mounted vertically on the second frame 41, a pressure plate 423 connected to the underside of the support plate 421 by an elastic member 422, a pressing member 424 disposed on the support plate 421 and having its bottom end passing through the pressure plate 423, and a fourth power device 322 for controlling the lifting and lowering of the support plate 421. The fourth power device 322 may be a cylinder, an electric cylinder, or a hydraulic cylinder. A contact displacement sensor 43 is disposed on the pressure plate 423, which is used to detect the distance between the pressure plate 423 and the support plate 421. The pressing member 424 includes a diameter enlargement portion and a rod portion. The diameter enlargement portion has an accommodating space for accommodating the laser displacement sensor 44, and the rod portion has a through hole along its axial direction.

[0035] See Figure 9 , Figure 10 The pressure plate 423 is installed below the support plate 421 via an elastic element 422, which can be a spring. A boss is provided at the center of the lower part of the pressure plate 423. A through hole is provided on the pressure plate 423 for the rod of the pressing part 424 to pass through. A contact displacement sensor 43 is installed on the side of the pressure plate 423 and is used to detect the distance between the pressure plate 423 and the support plate 421. A laser displacement sensor 44 is installed in the enlarged diameter part of the pressing part 424. The laser displacement sensor 44 can detect the distance between the top of the valve stem 104 and the top of the valve seat 101 through the through hole of the rod.

[0036] Specifically, when precisely adjusting the position of the valve stem 104 of the damping valve 10, the pallet 12 is transported to the second pressing mechanism 4 via the conveyor line 11 and placed directly below the pressure plate 423. The fourth power device 322 controls the bearing plate 421 to move downward, causing the boss at the bottom of the pressure plate 423 to press against the valve seat 101, and the elastic element 422 to be in a compressed state. At this time, the contact displacement sensor 43 records the position between the pressure plate 423 and the bearing plate 421 as the zero point. Subsequently, the fourth power device 322 controls the bearing plate 421 to move downward, causing the rod of the pressing element 424 to extend into the valve seat. The guide sleeve 106 is pressed down inside the valve seat 101, and the guide sleeve 106 presses down the return spring 109, causing the return spring 109 to press down the moving iron core 105, thereby controlling the valve stem 104 to move downward. The laser displacement sensor 44 can detect the distance between the top of the valve stem 104 and the top of the valve seat 101 in real time. When the detected distance reaches the preset value, the fourth power device 322 immediately stops driving the bearing plate 421 to move downward, completing the precise positioning of the valve stem 104. Combined with the zero-position calibration result of the contact displacement sensor 43, the detection error can be further corrected to ensure that the adjustment accuracy meets the process requirements.

[0037] In one or more embodiments, a lifting mechanism 5 is also provided at the first pressing mechanism 2 and the second pressing mechanism 4. The lifting mechanism 5 is used to lift the pallet 12 that is transported by the conveyor line 11 to the first pressing mechanism 2 or the second pressing mechanism 4, so that the pallet 12 is removed from the conveyor line 11. The lifting mechanism 5 includes a base plate 51, a fifth power device 52 provided at the base plate 51, a lifting plate 53 that is controlled to rise and fall by the fifth power device 52, and a support member 54 that can extend into the space between the lifting plate 53 and the base plate 51.

[0038] See Figure 5 , Figure 6 , Figure 10 , Figure 11 The fifth power unit 52 can be a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The support member 54 is pushed by the cylinder to enter between the lifting plate 53 and the base plate 51. Specifically, when the conveyor line 11 transports the pallet 12 to the first pressing mechanism 2 or the second pressing mechanism 4, the fifth power unit 52 controls the lifting plate 53 to push the pallet 12, causing the pallet 12 to detach from the conveyor line 11. Subsequently, the cylinder controls the support member 54 to extend between the lifting plate 53 and the base plate 51, so that the support member 54 forms a support for the lifting plate 53. Through the auxiliary support of the support member 54, the stability of the pallet 12 can be improved during the pressing operation of the damping valve 10, preventing the pallet 12 from shifting and sinking during pressing, and ensuring pressing accuracy.

[0039] In one or more embodiments, a spring feeding mechanism 6 is further provided on the side of the conveying mechanism 1 and located upstream of the first pressing mechanism 2. The spring feeding mechanism 6 is used to feed and fill the reset spring 109 into the stationary iron core 103. The spring feeding mechanism 6 includes a vibratory plate 61 and a clamping module 62. The clamping module 62 is used to grab the reset spring 109 vibrated and conveyed by the vibratory plate 61 and place it into the stationary iron core 103 on the tray 12. The clamping module 62 includes a third gripper cylinder controlled by the first three-axis module 621.

[0040] Specifically, when feeding the return spring 109 into the stationary iron core 103, the vibratory feeder 61 is first used for vibration feeding, and then the first three-axis module 621 controls the movement of the third gripper cylinder, causing the gripper cylinder to grasp the return spring 109 and mount it onto the valve stem 104 of the stationary iron core 103. This setup enables automated feeding of the return spring 109, improving the production efficiency of the damping valve 10 press-fitting process.

[0041] In one or more embodiments, a vision inspection mechanism 7 is also provided on the side of the conveying mechanism 1 and located between the welding mechanism 3 and the second pressing mechanism 4. After the welding mechanism 3 finishes welding the valve seat 101 and the stationary iron core 103, the conveying line 11 can transport the valve seat 101 and the stationary iron core 103 to the vision inspection mechanism 7, so that the vision inspection mechanism 7 can take pictures and inspect the surface of the welded joint.

[0042] See Figure 12 The visual inspection mechanism 7 includes a visual camera 71, a second three-axis module 72, and a fourth gripper cylinder controlled by the second three-axis module 72. When photographing the welded connection between the valve seat 101 and the magnetic shielding ring 102, the second three-axis module 72 controls the fourth gripper cylinder to grasp the damping valve 10 on the tray 12 and move it to the visual camera 71. By controlling the circumferential rotation of the damping valve 10, the visual camera 71 can perform comprehensive photographic inspection of the welded area between the valve seat 101 and the magnetic shielding ring 102, ensuring the high yield of the pressure-fitted welded damping valve 10.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A valve seat assembly press-fitting device, characterized in that, It includes a conveying mechanism and a first pressing mechanism, a welding mechanism, and a second pressing mechanism arranged sequentially along the conveying direction of the conveying mechanism; The conveying mechanism includes a conveyor line and a pallet whose movement is controlled by the conveyor line; The first pressing mechanism includes a first frame and a clamping unit and a pressing unit disposed on the first frame. The clamping unit is used to place the valve seat on the tray onto the stationary iron core, and the pressing unit is used to press and assemble the valve seat and the stationary iron core. The welding mechanism includes a transfer unit and a welding unit. The transfer unit is used to grab the valve seat and stationary iron core that have been pressed together on the tray and transfer them to the welding unit. The welding unit is used to weld the connection between the valve seat and the stationary iron core. The second pressing mechanism includes a second frame and a precision pressing unit disposed on the second frame. The precision pressing unit controls the height of the valve stem and adjusts the distance between the top of the valve stem and the top of the valve seat by pressing down the guide sleeve inside the valve seat.

2. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: The clamping unit includes a first gripper cylinder and a first power device for controlling the vertical or horizontal movement of the first gripper cylinder; the pressing unit includes a pressure rod and a second power device for controlling the vertical movement of the pressure rod.

3. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: The transfer unit includes a third power device, a support rod whose lifting and rotation are controlled by the third power device, and a second gripper cylinder located at both ends of the support rod. The welding unit includes a clamping device for clamping the stationary iron core, a fourth power device for controlling the circumferential rotation of the clamping device, and a welding head for welding the connection between the stationary iron core and the valve seat.

4. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: The precision pressing unit includes a support plate that is slidably mounted on the second frame in a vertical direction, a pressure plate connected to the underside of the support plate by an elastic element, a pressing member disposed on the support plate and having its bottom end passing through the pressure plate, and a fourth power device for controlling the lifting and lowering of the support plate.

5. The valve seat assembly press-fitting equipment according to claim 4, characterized in that: A contact displacement sensor is provided on the pressure plate, which is used to detect the distance between the pressure plate and the support plate.

6. The valve seat assembly press-fitting equipment according to claim 4, characterized in that: The pressing component includes a diameter enlargement portion and a rod portion. The diameter enlargement portion has an accommodating space for accommodating a laser displacement sensor, and the rod portion has a through hole along its axial direction.

7. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: It also includes a lifting mechanism located at the first pressing mechanism and the second pressing mechanism. The lifting mechanism is used to lift the pallet that is transported by the conveyor line to the first pressing mechanism or the second pressing mechanism, so that the pallet is removed from the conveyor line. The lifting mechanism includes a base plate, a fifth power device disposed on the base plate, a lifting plate controlled by the fifth power device to rise and fall, and a support member that can extend between the lifting plate and the base plate.

8. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: The upper part of the tray is provided with a first carrier for placing the valve seat and a second carrier for placing the stationary iron core.

9. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: It also includes a spring feeding mechanism located on the side of the conveying mechanism and upstream of the first pressing mechanism, the spring feeding mechanism being used to feed and fill the reset spring into the stationary iron core; The spring feeding mechanism includes a vibratory plate and a clamping module. The clamping module is used to grab the reset spring vibrating and conveyed by the vibratory plate and place it in the stationary iron core on the tray.

10. The valve seat assembly press-fitting equipment according to claim 1, characterized in that: It also includes a vision inspection mechanism located on the side of the conveying mechanism and between the welding mechanism and the second pressing mechanism. After the welding mechanism finishes welding the valve seat and the stationary iron core, the conveying line can transport the valve seat and the stationary iron core to the vision inspection mechanism, so that the vision inspection mechanism can take pictures and inspect the surface of the weld joint.

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