Valve seat assembling system and working method

Abstract

The invention relates to the technical field of valve assembly assembling equipment, in particular to a valve seat assembling system and a working method. The valve seat assembling system comprises a valve seat feeding device, a transfer sliding table, an O-shaped ring feeding and assembling device, a reversing ejector rod assembling device, a grease injection device and a ceramic ball feeding and assembling device. The valve seat on-line automatic assembling machine sequentially completes valve seat feeding, valve seat transferring, O-shaped ring feeding and assembling, reversing ejector rod assembling, lubricating grease injecting and ceramic ball feeding and assembling, can completely replace the manual valve seat assembling process in the prior art, does not need manual intervention, and has the advantages of reducing labor intensity, reducing labor cost and improving assembling efficiency. The mechanization level and the automation level of valve seat assembly are improved, the working efficiency of valve seat assembly is improved, and large-scale production and application of valve seat assembly can be achieved; various assembling modes can be achieved, and mixed assembling production of three process routes including valve seat full-process automatic online assembling, valve seat semi-finished product online assembling and valve seat spare part assembling can be achieved.

Description

Technical Field

[0001] This invention relates to the field of valve assembly equipment technology, and in particular to a valve seat assembly system and its working method. Background Technology

[0002] Valve seats are primarily used for sealing and directional control in hydraulic valves. The assembly of a hydraulic valve involves the assembly of the valve seat, which requires installing upper and lower sealing rings, directional control rods, ceramic sealing balls, and other components, as well as applying lubricant. Finally, the valve seat assembly must be installed into the valve body. Current conventional assembly methods primarily rely on manual assembly. Furthermore, to accommodate the diversity of product manufacturing processes, production often needs to consider multiple modes, including full-process production, spare parts production, and semi-finished product production. However, existing valve seat assembly systems have the following drawbacks: 1. It cannot achieve automatic assembly and all require manual intervention, resulting in high labor costs and low automation level and work efficiency; 2. The assembly route is simple and lacks flexible mixed-line production functions such as semi-finished product loading and assembly / spare parts assembly. 3. Lack of quality inspection process leads to low assembly quality. Summary of the Invention

[0003] This invention provides a valve seat assembly system and working method to solve the defects of high labor costs, low automation level and low work efficiency in the prior art where valve seat assembly is done manually.

[0004] This invention provides a valve seat assembly system, comprising: A valve seat feeding device has a first tray for placing and feeding valve seats to be assembled; A transfer slide is used to place and transfer valve seats to be assembled. An O-ring feeding and assembly device is located on one side of the transfer slide, and is used for feeding O-rings and assembling O-rings on valve seats located on the transfer slide. A reversing push rod assembly device is located on one side of the transfer slide and downstream of the O-ring feeding and assembly device, and is used to assemble a reversing push rod on the valve seat located on the transfer slide. The grease injection device is located on the transfer slide and downstream of the reversing push rod assembly device, and is used to inject grease into the valve seat located on the transfer slide. A ceramic ball feeding and assembly device is provided on the transfer slide and located downstream of the grease injection device, and is used for feeding ceramic balls and assembling ceramic balls on valve seats located on the transfer slide.

[0005] According to the valve seat assembly system provided by the present invention, a clamp is slidably provided on the transfer slide, and the clamp is used to hold the valve seat; The valve seat assembly system also includes: A first conveying device is movably disposed between the valve seat feeding device and the transfer slide, and is used to convey the valve seat to be assembled on the first tray to the fixture.

[0006] The valve seat assembly system provided by the present invention further includes: A visual inspection device is located on one side of the transfer slide and between the O-ring feeding and assembly device and the reversing push rod assembly device, for visual inspection of the O-rings assembled on the valve seat. The second conveying device is located on one side of the transfer slide and downstream of the visual inspection device, and is used to remove valve seats with O-rings that fail the appearance inspection from the transfer slide.

[0007] According to the valve seat assembly system provided by the present invention, the transfer slide includes: a slide guide rail, a slide body, and a slide drive mechanism, wherein the slide body is slidably disposed along the direction of the slide guide rail via the slide drive mechanism; It also includes a rotating mechanism, which is mounted on the slide body and the rotating end of the rotating mechanism is connected to the clamp, for driving the clamp and the valve seat to rotate so that the grease injection device injects grease into both ends of the valve seat hole respectively.

[0008] According to the valve seat assembly system provided by the present invention, the O-ring feeding and assembly device includes: O-ring vibratory feeder is used to hold O-rings and feed them by vibration; An O-ring ejection mechanism is provided at one end of the O-ring ejection mechanism and extends to the transfer slide at the other end, for ejecting O-rings from the O-ring vibratory plate; An O-ring slide is movably disposed between the top of the transfer slide and the other end of the O-ring ejection mechanism, for transferring the O-rings in the O-ring ejection mechanism to the top of the transfer slide. The O-ring assembly unit is located above the transfer slide and is used to receive the O-ring slide and assemble the O-ring onto the valve seat.

[0009] According to the valve seat assembly system provided by the present invention, the O-ring slide includes: The O-ring horizontal slide is arranged horizontally above the transfer slide and between the other end of the O-ring ejection mechanism; The vertical slide table for the O-ring is arranged vertically on the horizontal slide table for the O-ring; The first picking needle is located at the movable end of the vertical slide table of the O-ring, and can insert the O-ring and drive the O-ring to move. The first disengagement cylinder is located on the vertical slide of the O-ring and can move vertically to disengage the O-ring from the first pick-up needle.

[0010] According to the valve seat assembly system provided by the present invention, the O-ring assembly unit includes: The mounting base is provided with a second pick-up pin, which is used to insert an O-ring on the first pick-up pin and drive the O-ring that has detached from the first pick-up pin to move. The second release cylinder is located on the mounting base and can move vertically to release the O-ring from the second pick-up needle; A rotary cylinder, connected to the mounting base, is used to drive the mounting base to rotate so that the second picking needle is oriented toward the valve seat.

[0011] According to the valve seat assembly system provided by the present invention, the movable end of the second conveying device is further provided with a reversing push rod gripper; The reversing push rod assembly device includes: A reversing push rod vibratory plate is used to hold the reversing push rod and vibrate it to feed materials. The reversing push rod ejection mechanism has one end located on the reversing push rod vibratory plate and the other end extending to the transfer slide table, and is used to eject the reversing push rod in the reversing push rod vibratory plate; The push rod gripper can be moved to the position of the reversing push rod ejection mechanism via the movable end of the second conveying device. The push rod gripper is used to grip the reversing push rod and insert it into the valve seat.

[0012] According to the valve seat assembly system provided by the present invention, the grease injection device includes: The grease injection horizontal slide is positioned horizontally above the transfer slide; A vertical grease injection slide is provided on the horizontal grease injection slide along the vertical direction; The grease injection cylinder is located at the movable end of the grease injection horizontal slide.

[0013] According to the valve seat assembly system provided by the present invention, the ceramic ball feeding and assembly device includes: A feeding assembly for storing and supplying sealing balls; A valve body fixing assembly is used to fix the valve body, and the valve body fixing assembly is arranged at an interval from the feeding assembly; A press-fit assembly, located above the valve body fixing assembly, is used to insert the sealing ball into the valve body; A feeding assembly is provided between the feeding assembly and the pressing assembly, and the feeding assembly is used to convey the sealing ball in the feeding assembly to the pressing assembly.

[0014] The valve seat assembly system provided by the present invention further includes: a valve seat pressing device, the valve seat pressing device comprising: The press-fit base is equipped with press-fit guide rails; A double-layer slide table is slidably mounted on the press-fit guide rail; The pressure bar assembly includes: a pressure bar body, a pressure sensor, and a stroke sensor. The pressure bar body is disposed on the double-layer slide table, and the pressure sensor and the stroke sensor are both disposed on the pressure bar body for detecting the pressing pressure and stroke displacement of the pressure bar body.

[0015] The valve seat assembly system provided by the present invention further includes: a material preparation device disposed near the second conveying device, the material preparation device comprising: The material preparation base plate is equipped with material preparation guide rails; The material preparation slide is slidably mounted on the material preparation guide rail; The second tray, located on the material preparation slide, is used to hold valve seats for material preparation.

[0016] The present invention also provides a method for operating a valve seat assembly system according to the present invention, comprising: S1. Valve seat is fed using the valve seat feeding device, and O-ring is fed using the O-ring feeding and assembly device; S2. Use the O-ring feeding and assembly device to assemble the valve seat with an O-ring; S3. Inspect the assembly quality of the O-rings; S4. Use the reversing push rod assembly device to feed the reversing push rod and assemble the reversing push rod to the valve seat. S5. Use the grease injection device to inject grease into both ends of the reversing rod of the valve seat.

[0017] The method for operating the valve seat assembly system provided by the present invention further includes: S6. The ceramic ball is fed and assembled using the ceramic ball feeding and assembly device and then assembled onto one end of the reversing rod of the valve seat.

[0018] According to the working method of the valve seat assembly system provided by the present invention, the valve seat assembly system includes: a valve seat press-fitting device; The working method of the valve seat assembly system also includes: S7. Use the valve seat pressing device to press the assembled valve seat into the valve body.

[0019] The present invention also provides a method for operating a valve seat assembly system according to the present invention, the valve seat assembly system comprising: a material preparation device; The working method of the valve seat assembly system includes: S1. Use the valve seat feeding device or the material preparation device to feed the valve seat that has been assembled with O-rings and reversing rods and has been greased. S2. Inspect the assembly quality of the O-rings; S3. The ceramic ball is fed and assembled using the ceramic ball feeding and assembly device and then assembled onto one end of the reversing rod of the valve seat.

[0020] This application provides a valve seat assembly system, comprising: a valve seat feeding device, a transfer slide, an O-ring feeding and assembly device, a reversing rod assembly device, a grease injection device, and a ceramic ball feeding and assembly device; the valve seat feeding device has a first tray for placing and feeding valve seats to be assembled; the transfer slide is used for placing and transferring valve seats to be assembled; the O-ring feeding and assembly device is located on one side of the transfer slide for feeding O-rings and assembling O-rings on valve seats located on the transfer slide; the reversing rod assembly device is located on one side of the transfer slide and downstream of the O-ring feeding and assembly device for assembling reversing rods on valve seats located on the transfer slide; the grease injection device is located on the transfer slide and downstream of the reversing rod assembly device for injecting grease into valve seats located on the transfer slide; and the ceramic ball feeding and assembly device is located on the transfer slide and downstream of the grease injection device for feeding ceramic balls and assembling ceramic balls on valve seats located on the transfer slide. This application provides a valve seat assembly system that sequentially completes the online automatic assembly of valve seats, including valve seat feeding, valve seat transfer, O-ring feeding and assembly, reversing rod assembly, grease injection, and ceramic ball feeding and assembly. It can completely replace the manual valve seat assembly process in the prior art, requiring no manual intervention. It reduces labor intensity, reduces labor costs, improves the mechanization and automation level of valve seat assembly, and increases valve seat assembly efficiency, enabling large-scale production application of valve seat assembly.

[0021] Furthermore, the valve seat assembly system provided in this application can realize multiple assembly modes according to actual assembly needs, and can realize three process routes of mixed production: fully automatic online assembly of valve seats, online assembly of valve seat semi-finished products, and assembly of valve seat spare parts. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the valve seat assembly system provided in one embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the valve seat feeding device provided in one embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the O-ring feeding and assembly device provided in one embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the valve seat in the first position of the transfer slide in one embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the valve seat in the second and third positions of the transfer slide provided in one embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the reversing push rod assembly device provided in one embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the grease injection device provided in one embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the valve seat press-fitting device provided in one embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the material preparation device provided in one embodiment of the present invention.

[0032] Figure 10 This is a schematic flowchart of a valve seat spare parts assembly method for a valve seat assembly system provided in one embodiment of the present invention.

[0033] Figure 11 This is a schematic flowchart of the fully automated online assembly method for valve seats provided in one embodiment of the present invention.

[0034] Figure 12 This is a schematic flowchart of the valve seat assembly system for assembling semi-finished valve seats in one embodiment of the present invention.

[0035] Figure labels

[0036] 1. Valve seat feeding device; 2. O-ring feeding and assembly device; 3. Reversing push rod assembly device; 4. Grease injection device; 5. Ceramic ball feeding and assembly device; 6. Valve seat pressing device; 7. Material preparation device; 8. Machine frame table; 9. Transfer device; 10. First handling device; 11. Second handling device; 12. Tray filled with valve seats; 13. Empty tray; 14. First position; 15. Second position; 16. Third position; 17. Servo motor; 18. O-ring ejection cylinder; 19. O-ring vibratory feeder; 20. O-ring ejection mechanism; 21. Rotation mechanism; 22. Clamp; 23. Slide body; 24. Slide guide rail; 25. Lifting cylinder; 26. Second disengagement cylinder; 27. Rotating cylinder; 28. Lowering cylinder; 29. ​​First disengagement cylinder; 30. O-ring 31. Horizontal slide table; 32. O-ring vertical slide table; 33. Reversing rod gripper; 34. Valve seat pneumatic suction cup; 35. Vision inspection device; 36. Reversing rod ejection mechanism; 37. Reversing rod vibratory plate; 38. Grease injection vertical slide table; 49. Grease injection cylinder; 40. Grease injection horizontal slide table; 41. Stroke sensor; 42. Double-layer slide table; 43. Press-fit base; 44. Pressure rod body; 55. Pressure sensor; 56. Material preparation base plate; 57. Material preparation slide table; 58. Second tray. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0038] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0041] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] The following is combined with Figures 1-9 This invention describes a valve seat assembly system. The valve seat assembly system includes: a valve seat feeding device 1, a transfer slide, an O-ring feeding and assembly device 2, a reversing push rod assembly device 3, a grease injection device 4, and a ceramic ball feeding and assembly device 5.

[0043] The device comprises: a valve seat feeding device 1, having a first tray for placing and feeding valve seats to be assembled; a transfer slide for placing and transferring valve seats to be assembled; an O-ring feeding and assembly device 2, located on one side of the transfer slide for feeding O-rings and assembling O-rings on valve seats located on the transfer slide; a reversing rod assembly device 3, located on one side of the transfer slide and downstream of the O-ring feeding and assembly device 2, for assembling reversing rods on valve seats located on the transfer slide; a grease injection device 4, located on the transfer slide and downstream of the reversing rod assembly device 3, for injecting grease into valve seats located on the transfer slide; and a ceramic ball feeding and assembly device 5, located on the transfer slide and downstream of the grease injection device 4, for feeding ceramic balls and assembling ceramic balls on valve seats located on the transfer slide.

[0044] Specifically, all components in the valve seat assembly system are mounted on the machine frame platform 8, forming a production line system with online automatic valve seat assembly. The working status of each component can be controlled by an electronic control device to meet the flexible assembly needs of valve seats with different assembly levels. For example, if the valve seat has been equipped with an O-ring, the O-ring feeding and assembly device 2 is skipped; if the valve seat has been equipped with a reversing push rod, the reversing push rod assembly device 3 is skipped.

[0045] Specifically, such as Figure 2 As shown, the valve seat feeding device 1 is equipped with a bracket for receiving the first tray. The first tray has two rows, one of which is an empty tray 13, which is the storage position for the trays, and the other row is a tray 12 filled with valve seats for feeding valve seats. The valve seat feeding device 1 is equipped with a drive cylinder (which can be a pneumatic cylinder, hydraulic cylinder or electric cylinder, etc.) to drive the first tray filled with valve seats to move to the feeding position.

[0046] Specifically, the transfer slide is mainly used to place and move valve seats between multiple positions. The valve seats can be stopped at a designated position and assembled by devices set next to the transfer slide, such as assembling O-rings, reversing rods, injecting grease, and assembling ceramic balls.

[0047] Specifically, such as Figure 3 As shown, the O-ring feeding and assembly device 2 comprises two parts: an O-ring feeding section and an O-ring assembly section. The O-ring feeding section provides a storage location for O-rings and can push O-rings from the storage location to the feeding location. The O-ring assembly section moves the O-rings from the feeding location to the corresponding assembly position on the transfer slide for assembly. The O-ring assembly action consists of at least two parts: moving the O-ring and detaching the O-ring from the assembly section and inserting it into the mounting groove in the valve seat. This can be accomplished using a drive cylinder and a release plate. Figure 4 and Figure 5 In the structure shown, the valve seat to be assembled is transported to the first position 14 on the transfer slide by the first transport device 10 (described in detail in the following embodiments). The transfer slide moves the valve seat to the second position 15 by the drive of the servo motor 17. The O-ring feeding and assembly device 2 is located next to the second position 15. The valve seat is assembled with O-rings by the O-ring feeding and assembly device 2 at the second position 15. After the assembly is completed, the valve seat moves to the third position 16 under the drive of the servo motor 17. Then, the reversing push rod is assembled.

[0048] Specifically, such as Figure 6As shown, the reversing push rod assembly device 3 includes two parts: a feeding part for the reversing push rod and an assembly part for the reversing push rod. The feeding part provides a position for storing the reversing push rod and can push the reversing push rod from the storage position to the feeding position. The assembly part moves the reversing push rod in the feeding position to the corresponding assembly position on the transfer slide for assembly. The reversing push rod assembly action consists of at least two parts: the movement of the reversing push rod and the insertion of the reversing push rod into the through hole in the valve seat. This can be accomplished using a drive cylinder and grippers. It should be understood that the assembly position of the reversing push rod is downstream of the third position 16, that is, after the O-ring is assembled, the reversing push rod is assembled.

[0049] Specifically, such as Figure 7 As shown, the grease injection device 4 is installed on the transfer slide and located downstream of the reversing push rod assembly device 3. After the valve seat is assembled with the reversing push rod, grease is injected into both ends of the valve seat through hole. The grease injection device 4 consists of two parts: one part is a container for containing and extruding grease, which can be a cylindrical container, and the grease is extruded by squeezing the container; the other part is a moving part that drives the container to move. During the grease injection process, the moving part is used to move the container to the grease injection position before the grease is injected.

[0050] Specifically, the ceramic ball feeding and assembly device 5 adopts an existing structure to realize the feeding and assembly of ceramic balls, and its specific structure is as shown in Chinese Patent "Hydraulic Valve Sealing Ball Installation Device" (Announcement No.: CN 114310225 A).

[0051] Finally, the assembled valve body can be transported out through transfer device 9 and enter the production line.

[0052] As can be seen, the valve seat assembly system provided in this application completes the valve seat loading, valve seat transfer, O-ring loading and assembly, reversing rod assembly, grease injection, and ceramic ball loading and assembly in sequence, which is an online automatic valve seat assembly. It can completely replace the manual valve seat assembly process in the prior art, without human intervention. It reduces labor intensity, reduces labor costs, improves the mechanization and automation level of valve seat assembly, improves valve seat assembly efficiency, and enables large-scale production application of valve seat assembly.

[0053] In one embodiment of the present invention, a clamp 22 is slidably provided on the transfer slide, and the clamp 22 is used to clamp the valve seat. The valve seat assembly system further includes a first conveying device 10, which is movably disposed between the valve seat loading device 1 and the transfer slide, and is used to transport the valve seat to be assembled on the first tray to the clamp 22. Specifically, the clamp 22 provided on the transfer slide positions and fixes the valve seat through clamping action. The clamp 22 is driven by the servo motor 17 to realize the transfer of the valve seat to different positions on the transfer slide, thereby satisfying the assembly process of moving the valve seat to different positions for different stages. The first conveying device 10 can be a robot. In this embodiment, a four-axis robot is used to transport the valve seat in the valve seat loading device 1 to the first position 14 of the transfer slide.

[0054] In one embodiment of the present invention, the valve seat assembly system further includes a visual inspection device 36 and a second conveying device 11. The visual inspection device 36, located on one side of the transfer slide and between the O-ring feeding and assembly device 2 and the reversing push rod assembly device 3, is used to perform visual inspection on the O-rings assembled onto the valve seat. The visual inspection device 11, located on one side of the transfer slide and downstream of the visual inspection device 36, is used to remove valve seats with O-rings that fail the visual inspection from the transfer slide. In this example, the visual inspection device 36, by performing visual inspection on the O-rings assembled onto the valve seat, can employ an inspection camera, such as a CCD camera. The appearance inspection standards include: the quality of the O-ring itself and whether the O-ring is properly assembled. The quality of the O-ring itself can be determined by comparing it with a standard part through camera imaging. Whether the O-ring is properly assembled is determined by checking whether the O-ring is successfully assembled in the mounting slot of the valve seat through camera imaging and comparison with a standard part. If the O-ring passes the appearance inspection, the subsequent assembly process continues. If the O-ring fails the inspection, the unqualified valve seat is removed from the transfer slide and placed into the unqualified product box by the second handling device 11. Optionally, the second handling device 11 can be a four-axis robot with mobile handling function. It can be seen that in this embodiment, the appearance inspection of the valve seat after the O-ring is assembled is performed to determine whether the O-ring is properly assembled, thereby improving the valve seat assembly pass rate.

[0055] In one embodiment of the present invention, the transfer slide includes: a slide guide rail 24, a slide body 23, and a slide drive mechanism. The slide body 23 is slidably disposed along the direction of the slide guide rail 24 via the slide drive mechanism. The valve seat assembly system further includes: a rotating mechanism 21, which is disposed on the slide body 23, and the rotating end of the rotating mechanism 21 is connected to the clamp 22 for driving the clamp 22 and the valve seat to rotate, so that the grease injection device 4 injects grease into both ends of the valve seat hole respectively. In this embodiment, the transfer slide consists of three parts: the slide guide rail 24, the slide body 23, and the slide drive mechanism. The rotating mechanism 21 is disposed on the slide body 23, and drives the clamp 22 to rotate, thereby driving the valve seat at the upper end of the clamp 22 to rotate. Specifically, the slide guide rail 24 is used to limit the sliding direction of the slide body 23. A double slide rail method is adopted to ensure sliding stability. The slide drive mechanism uses a servo motor 17 to drive the slide body 23 to slide. The rotation mechanism 21 drives the valve seat to rotate 180° through the clamp 22. After grease injection is completed at one end of the valve seat through hole, the valve seat is flipped to inject grease at the other end of the valve seat through hole, thereby realizing the operation of injecting grease at both ends of the valve seat through hole.

[0056] In one embodiment of the present invention, the O-ring feeding and assembly device 2 includes: an O-ring vibratory feeder 19, an O-ring ejection mechanism 20, an O-ring slide, and an O-ring assembly unit. The O-ring vibratory feeder 19 is used to place O-rings and feed them via vibration; the O-ring ejection mechanism 20 has one end located at the top and the other end extending to the transfer slide, used to eject O-rings from the O-ring vibratory feeder 19; the O-ring slide is movably disposed above the transfer slide and between the other end of the O-ring ejection mechanism 20, used to transfer O-rings from the O-ring ejection mechanism 20 to the top of the transfer slide; and the O-ring assembly unit is located above the transfer slide, used to receive the O-rings from the transfer slide and assemble the O-rings onto the valve seat. In this embodiment, the O-ring vibratory feeder 19 can automatically sort and individually transport O-rings to the feeding position through vibration. The O-ring ejection mechanism 20 ejects the individual O-rings to the O-ring slide, which then moves them above the transfer slide for assembly into the valve seat mounting slot by the O-ring assembly unit. This achieves automatic O-ring feeding and assembly. The O-ring ejection mechanism 20 is equipped with an O-ring ejection cylinder 18.

[0057] In one embodiment of the present invention, the O-ring slide table includes: an O-ring horizontal slide table 30, an O-ring vertical slide table 31, a first pick-up needle, and a first release cylinder 29. The O-ring horizontal slide table 30 is horizontally positioned above the transfer slide table and between the other end of the O-ring ejection mechanism 20; the O-ring vertical slide table 31 is vertically positioned on the O-ring horizontal slide table 30; the first pick-up needle is located at the movable end of the O-ring vertical slide table 31 and is capable of inserting an O-ring and moving it; the first release cylinder 29 is located on the O-ring vertical slide table 31 and is capable of vertical movement to disengage the O-ring from the first pick-up needle. In this embodiment, the first pick-up needle can move the O-ring located at the discharge position of the O-ring ejection mechanism 20 by inserting the O-ring. The horizontal and vertical movement of the O-ring is achieved by the O-ring horizontal slide 30 and the O-ring vertical slide 31, which drives the first pick-up needle and the O-ring inserted at its bottom to move above the transfer slide. The first release cylinder 29 moves, driving the release ring located around the first pick-up needle to descend, so that the O-ring is released from the first pick-up needle, so that the O-ring is transferred to the O-ring assembly unit for the next O-ring assembly operation.

[0058] In one embodiment of the present invention, the O-ring assembly unit includes: a mounting base, a second release cylinder 26, and a rotary cylinder 27. The mounting base is provided with a second pick-up needle for inserting an O-ring onto a first pick-up needle and moving an O-ring that has detached from the first pick-up needle. The second release cylinder 26 is located on the mounting base and is capable of vertical movement to detach the O-ring from the second pick-up needle. The rotary cylinder 27 is connected to the mounting base and is used to rotate the mounting base so that the second pick-up needle faces the valve seat. Specifically, the mounting base is located above the transfer slide and is equipped with a second pick-up pin that can insert an O-ring onto the first pick-up pin. As the first release cylinder 29 moves, the O-ring detaches from the first pick-up pin. Initially, the second pick-up pin faces upwards. After receiving the O-ring, the rotating cylinder 27 rotates the mounting base and the second pick-up pin 180°, so the second pick-up pin faces downwards, towards the valve seat. The second release cylinder 26 moves, driving its release ring, located around the second pick-up pin, to descend, causing the O-ring to detach from the second pick-up pin and be assembled into the mounting groove of the valve seat, completing the assembly of one O-ring. It is understood that the feeding and assembly process for the other O-ring is the same as described above.

[0059] In one embodiment of the present invention, a lifting cylinder 25 and a lowering cylinder 28 are also provided. The lifting cylinder 25 is connected to the clamp 22 via a rotating mechanism 21. Before the clamp 22 rotates, it drives the clamp 22 to rise, so as to avoid contact with the positioning post on the base when it rotates. The lowering cylinder 28 is connected to the mounting base. After the rotating cylinder 27 drives the second picking needle to rotate, it drives the second picking needle to descend, and the movement drives the O-ring to the assembly position.

[0060] In one embodiment of the present invention, the movable end of the second conveying device 11 is further provided with a reversing push rod gripper 32. The reversing push rod assembly device 3 includes: a reversing push rod vibratory plate 38 and a reversing push rod ejection mechanism 37. The reversing push rod vibratory plate 38 is used to place the reversing push rod and vibrate it for feeding; the reversing push rod ejection mechanism 37 is located at one end of the reversing push rod vibratory plate 38 and extends to the transfer slide at the other end, and is used to eject the reversing push rod from the reversing push rod vibratory plate 38; the push rod gripper can be moved to the position of the reversing push rod ejection mechanism 37 through the movable end of the second conveying device 11, and is used to grip the reversing push rod and insert it into the valve seat. Specifically, the reversing push rod vibratory plate 38 can automatically sort and individually transport the reversing push rods to the loading position through vibration. The reversing push rod pushing mechanism 37 pushes the individual reversing push rods to the gripping position of the push rod gripper. The second conveying device 11 (four-axis robot) moves the push rod gripper to the gripping position and grabs the reversing push rod, moving it above the transfer slide. The second conveying device 11 is also equipped with a valve seat pneumatic suction cup 33, which can pick up the valve seat. At the same time, the movement of the four-axis robot accurately installs the reversing push rod into the through hole of the valve seat.

[0061] In one embodiment of the present invention, the grease injection device 4 includes: a horizontal grease injection slide 41, a vertical grease injection slide 39, and a grease injection cylinder 40. The horizontal grease injection slide 41 is horizontally positioned above the transfer slide; the vertical grease injection slide 39 is vertically positioned on the horizontal grease injection slide 41; and the grease injection cylinder 40 is located at the movable end of the horizontal grease injection slide 41. Specifically, the grease injection cylinder 40 is filled with grease and can extrude a measured amount of grease. The horizontal and vertical movement of the grease injection cylinder 40 is achieved through the horizontal and vertical grease injection slides 41 and 39, thereby injecting grease into both ends of the valve seat through-hole.

[0062] In one embodiment of the present invention, the ceramic ball feeding and assembly device 5 includes: a feeding assembly, a valve body fixing assembly, a pressing assembly, and a feeding assembly. The feeding assembly stores and supplies the sealing balls; the valve body fixing assembly fixes the valve body and is spaced apart from the feeding assembly; the pressing assembly is located above the valve body fixing assembly and is used to insert the sealing balls into the valve body; the feeding assembly is located between the feeding assembly and the pressing assembly and is used to transport the sealing balls from the feeding assembly to the pressing assembly. The ceramic ball feeding and assembly device 5 in this embodiment adopts the structure of Chinese Patent "Hydraulic Valve Sealing Ball Installation Device" (Publication No.: CN114310225 A), and therefore will not be described further.

[0063] In one embodiment of the present invention, such as Figure 8 As shown, the valve seat assembly system also includes a valve seat pressing device 6. The valve seat pressing device 6 includes a pressing base 48, a double-layer slide 46, and a pressing rod assembly. The pressing base 48 is equipped with a pressing guide rail; the double-layer slide 46 is slidably mounted on the pressing guide rail. Specifically, the pressing rod assembly includes a pressing rod body 49, a pressure sensor 51, and a stroke sensor 43. The pressing rod body 49 is mounted on the double-layer slide 46, and both the pressure sensor 51 and the stroke sensor 43 are mounted on the pressing rod body 49 to detect the pressing pressure and stroke displacement of the pressing rod body 49. In this embodiment, the pressing base 48 can be connected to the end of the transfer slide for transporting the assembled valve seat and valve body. The double-layer slide 46 is mounted on the pressing base 48 to drive the pressing rod assembly to move as a whole, and the pressing position is adjustable. During the pressing process, the pressure rod body 49 presses the valve seat into the valve body. During the pressing process, the pressure sensor 51 monitors the pressing pressure and the stroke sensor 43 monitors the pressing stroke displacement to ensure the pressing quality.

[0064] In one embodiment of the present invention, such as Figure 9 As shown, the valve seat assembly system also includes a material preparation device 7, located near the second conveying device 11. The material preparation device 7 includes a material preparation base plate 54, a material preparation slide 56, and a second tray 57. The material preparation base plate 54 is equipped with a material preparation guide rail; the material preparation slide 56 is slidably mounted on the material preparation guide rail; and the second tray 57 is mounted on the material preparation slide 56 for placing valve seats as preparation material. Specifically, the material preparation device 7 is similar in structure to the valve seat feeding device 1. Its main function is to supply valve seats near the second conveying device 11 on the assembly line. The valve seats supplied at this location are generally semi-finished valve seats, such as those already fitted with O-rings or reversing rods. The design of the material preparation device 7 simplifies the already assembled process, meets the assembly needs of semi-finished valve seats, and improves assembly efficiency.

[0065] like Figures 10 to 12 As shown, the present invention also provides a working method for the valve seat assembly system according to the above embodiments of the present invention. This working method has three different assembly methods: a fully automated online assembly method for valve seats, an online assembly method for valve seat semi-finished products, and a valve seat spare parts assembly method.

[0066] like Figure 10 As shown, the assembly method for valve seat spare parts includes the following steps: S1. Valve seat is fed using valve seat feeding device 1, and O-ring is fed using O-ring feeding and assembly device 2; S2. Use the O-ring feeding and assembly device 2 to assemble the valve seat with an O-ring; S3. Inspect the assembly quality of the O-rings; S4. Use the reversing push rod assembly device 3 to feed the reversing push rod and assemble the reversing push rod to the valve seat. S5. Use the grease injection device 4 to inject grease into both ends of the reversing rod of the valve seat.

[0067] Finally, the assembled valve seat is transported to the material preparation device 7 using the second handling device 11.

[0068] like Figure 11 As shown, the fully automated online assembly method for valve seats includes the following steps: S1. Valve seat is fed using valve seat feeding device 1, and O-ring is fed using O-ring feeding and assembly device 2; S2. Use the O-ring feeding and assembly device 2 to assemble the valve seat with an O-ring; S3. Inspect the assembly quality of the O-rings; S4. Use the reversing push rod assembly device 3 to feed the reversing push rod and assemble the reversing push rod to the valve seat. S5. Use grease injection device 4 to inject grease into both ends of the reversing rod of the valve seat. S6. Use ceramic ball feeding and assembly device 5 to feed ceramic balls and assemble them onto one end of the reversing push rod of the valve seat.

[0069] S7. Use valve seat pressing device 6 to press the assembled valve seat into the valve body.

[0070] like Figure 12 As shown, the assembly method for the valve seat semi-finished product includes the following steps: S1. Use valve seat feeding device 1 or material preparation device 7 to feed the valve seat that has been equipped with O-rings and reversing push rods and has been greased. S2. Inspect the assembly quality of the O-rings; S3. Use ceramic ball feeding and assembly device 5 to feed ceramic balls and assemble them onto one end of the reversing rod of the valve seat.

[0071] Finally, the assembled valve seat is pressed into the valve body using the valve seat pressing device 6.

[0072] Of course, the above three assembly methods can be carried out individually or simultaneously to mix and assemble valve seats in order to improve work efficiency.

[0073] As can be seen, the working method of the valve seat assembly system according to the above embodiments of the present invention can realize multiple assembly modes according to actual assembly needs, and can realize the mixed production of three process routes: fully automatic online assembly of valve seats, online assembly of valve seat semi-finished products, and assembly of valve seat spare parts.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve seat assembly system, characterized in that, include: The valve seat feeding device (1) has a first tray for placing the valve seat to be assembled and feeding it; A transfer slide is used to place and transfer valve seats to be assembled. O-ring feeding and assembly device (2) is provided on one side of the transfer slide table for feeding O-rings and assembling O-rings on valve seats located on the transfer slide table. The reversing push rod assembly device (3) is located on one side of the transfer slide and downstream of the O-ring feeding and assembly device (2), and is used to assemble the reversing push rod on the valve seat located on the transfer slide. The grease injection device (4) is located on the transfer slide and downstream of the reversing push rod assembly device (3), and is used to inject grease into the valve seat located on the transfer slide. A ceramic ball feeding and assembly device (5) is provided on the transfer slide and located downstream of the grease injection device (4), and is used for feeding ceramic balls and assembling ceramic balls on the valve seat located on the transfer slide.

2. The valve seat assembly system according to claim 1, characterized in that, The transfer slide is slidably provided with a clamp (22), which is used to hold the valve seat; The valve seat assembly system also includes: The first transport device (10) is movably disposed between the valve seat loading device (1) and the transfer slide, and is used to transport the valve seat to be assembled on the first tray to the fixture (22).

3. The valve seat assembly system according to claim 1, characterized in that, Also includes: A visual inspection device (36) is provided on one side of the transfer slide and located between the O-ring feeding and assembly device (2) and the reversing push rod assembly device (3), and is used to perform visual inspection on the O-rings assembled on the valve seat. The second conveying device (11) is located on one side of the transfer slide and downstream of the visual inspection device (36), and is used to remove valve seats with O-rings that fail the appearance inspection from the transfer slide.

4. The valve seat assembly system according to claim 2, characterized in that, The transfer slide includes: a slide guide rail (24), a slide body (23) and a slide drive mechanism. The slide body (23) is slidably disposed along the direction of the slide guide rail (24) via the slide drive mechanism. It also includes a rotating mechanism (21), which is located on the slide body (23) and the rotating end of the rotating mechanism (21) is connected to the clamp (22) to drive the clamp (22) and the valve seat to rotate so that the grease injection device (4) injects grease into both ends of the valve seat hole respectively.

5. The valve seat assembly system according to claim 1, characterized in that, The O-ring feeding and assembly device (2) includes: O-ring vibratory feeder (19) is used to place O-rings and feed them by vibration; O-ring ejection mechanism (20), one end of which is located at the O-ring ejection mechanism (20) and the other end extends to the transfer slide, for ejecting the O-ring from the O-ring vibrating plate (19); The O-ring slide is movably disposed between the top of the transfer slide and the other end of the O-ring ejection mechanism (20), for transferring the O-ring in the O-ring ejection mechanism (20) to the top of the transfer slide; The O-ring assembly unit is located above the transfer slide and is used to receive the O-ring slide and assemble the O-ring onto the valve seat.

6. The valve seat assembly system according to claim 5, characterized in that, The O-ring slide table includes: The O-ring horizontal slide (30) is arranged horizontally above the transfer slide and between the other end of the O-ring ejection mechanism (20); The vertical slide table (31) of the O-ring is arranged vertically on the horizontal slide table (30) of the O-ring; The first picking needle is located at the movable end of the vertical slide table (31) of the O-ring, and can insert the O-ring and drive the O-ring to move; The first detachment cylinder (29) is located on the vertical slide table (31) of the O-ring and can move vertically to detach the O-ring from the first pick-up needle.

7. The valve seat assembly system according to claim 5, characterized in that, The O-ring assembly unit includes: The mounting base is provided with a second pick-up pin, which is used to insert an O-ring on the first pick-up pin and drive the O-ring that has detached from the first pick-up pin to move. The second release cylinder (26) is provided on the mounting base and is capable of vertical movement to release the O-ring from the second pick-up needle; A rotary cylinder (27) is connected to the mounting base and is used to drive the mounting base to rotate so that the second picking needle is directed toward the valve seat.

8. The valve seat assembly system according to claim 3, characterized in that, The movable end of the second conveying device (11) is also provided with a reversing push rod gripper (32); The reversing push rod assembly device (3) includes: The reversing push rod vibratory plate (38) is used to place the reversing push rod and vibrate the reversing push rod to feed the material; The reversing push rod ejection mechanism (37) has one end located on the reversing push rod vibrating plate (38) and the other end extended to the transfer slide, and is used to eject the reversing push rod in the reversing push rod vibrating plate (38); The push rod gripper can be moved to the position of the reversing push rod ejection mechanism (37) via the movable end of the second conveying device (11). The push rod gripper is used to grip the reversing push rod and insert it into the valve seat.

9. The valve seat assembly system according to claim 1, characterized in that, The grease injection device (4) includes: The grease injection horizontal slide (41) is arranged horizontally above the transfer slide; The vertical grease injection slide (39) is provided vertically on the horizontal grease injection slide (41); The grease injection cylinder (40) is located at the movable end of the grease injection horizontal slide (41).

10. The valve seat assembly system according to claim 1, characterized in that, The ceramic ball feeding and assembly device (5) includes: A feeding assembly for storing and supplying sealing balls; A valve body fixing assembly is used to fix the valve body, and the valve body fixing assembly is arranged at an interval from the feeding assembly; A press-fit assembly, located above the valve body fixing assembly, is used to insert the sealing ball into the valve body; A feeding assembly is provided between the feeding assembly and the pressing assembly, and the feeding assembly is used to convey the sealing ball in the feeding assembly to the pressing assembly.

11. The valve seat assembly system according to any one of claims 1 to 10, characterized in that, Also includes: Valve seat press-fitting device (6), the valve seat press-fitting device (6) includes: The press-fit base (48) is equipped with press-fit guide rails; A double-layer slide table (46) is slidably mounted on the press-fit guide rail; The pressure bar assembly includes: a pressure bar body (49), a pressure sensor (51), and a stroke sensor (43). The pressure bar body (49) is mounted on the double-layer slide (46). The pressure sensor (51) and the stroke sensor (43) are both mounted on the pressure bar body (49) and are used to detect the pressing pressure and stroke displacement of the pressure bar body (49).

12. The valve seat assembly system according to claim 3 or 8, characterized in that, Also includes: A material preparation device (7) is disposed near the second conveying device (11), the material preparation device (7) comprising: The material preparation base plate (54) is equipped with material preparation guide rails; The material preparation slide (56) is slidably mounted on the material preparation guide rail; The second tray (57) is located on the material preparation slide (56) and is used to place the valve seat as material preparation.

13. A method of operating the valve seat assembly system according to any one of claims 1 to 12, characterized in that, include: S1. Valve seat is fed using the valve seat feeding device (1), and O-ring is fed using the O-ring feeding and assembly device (2); S2. The valve seat is assembled with an O-ring using the O-ring feeding and assembly device (2); S3. Inspect the assembly quality of the O-rings; S4. Use the reversing push rod assembly device (3) to feed the reversing push rod and assemble the reversing push rod to the valve seat; S5. Use the grease injection device (4) to inject grease into both ends of the reversing rod of the valve seat.

14. The operating method of the valve seat assembly system according to claim 13, characterized in that, Also includes: S6. The ceramic ball is fed using the ceramic ball feeding and assembly device (5) and the ceramic ball is assembled to one end of the reversing rod of the valve seat.

15. The operating method of the valve seat assembly system according to claim 14, characterized in that, The valve seat assembly system includes: a valve seat press-fitting device (6); The working method of the valve seat assembly system also includes: S7. The assembled valve seat is pressed into the valve body using the valve seat pressing device (6).

16. A method of operating the valve seat assembly system according to any one of claims 1 to 12, characterized in that, The valve seat assembly system includes: a material preparation device (7); The working method of the valve seat assembly system includes: S1. Use the valve seat feeding device (1) or the material preparation device (7) to feed the valve seat that has been assembled with O-rings and reversing push rods and has been greased. S2. Inspect the assembly quality of the O-rings; S3. The ceramic ball is fed using the ceramic ball feeding and assembly device (5) and the ceramic ball is assembled to one end of the reversing rod of the valve seat.

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