Automatic assembly equipment of spring valve rod assembly and automatic assembly detection method thereof

Abstract

An automated assembly equipment and automated assembly and testing method for spring valve stem assemblies include a workbench and a control device. The workbench is equipped with a circular station turntable assembly. The circular station turntable assembly has several stations, each equipped with a tooling fixture adapted to the spring valve stem assembly. Around the circular station turntable, in sequence, are arranged a threaded end cap feeding assembly mechanism, a rod-shaped threaded valve body feeding assembly mechanism, a snap ring feeding assembly mechanism, a sealing ring feeding assembly mechanism, a spring feeding assembly mechanism, a pressure shaft feeding assembly mechanism, a qualified product unloading mechanism, and a defective product unloading mechanism. This invention extensively utilizes automated mechanisms to achieve fully automated feeding and assembly of the threaded end cap, rod-shaped threaded valve body, snap ring, sealing ring, spring, and pressure shaft in the spring valve stem assembly, reducing the work area and effectively improving product consistency and yield.

Description

Technical Field

[0001] This invention relates to the field of spring valve stem assembly production and assembly, and in particular to an automatic assembly equipment for spring valve stem assemblies and an automatic assembly and testing method thereof. Background Technology

[0002] Spring-loaded valve stem assemblies are used in heating system piping systems. They mainly consist of a threaded end cap, a rod-shaped threaded valve body, a retaining ring, a sealing ring, a spring, and a pressure shaft. The rod-shaped threaded valve body is first screwed into the threaded end cap. Next, the retaining ring is secured to the lower part of the rod-shaped threaded valve body for subsequent external assembly. Then, the sealing ring is fitted onto the rod-shaped threaded valve body for sealing. Next, the spring is fitted onto the upper end of the rod-shaped threaded valve body. Finally, the pressure shaft passes through the spring and is at least partially inserted into the rod-shaped threaded valve body, completing the assembly.

[0003] When in use, use a tool or your hand to contact the lower pressure shaft and apply downward pressure to move it relative to the rod-shaped threaded valve body and form an opening; release the lower pressure shaft, and under the action of the spring, the lower pressure shaft will automatically return to its original position and the opening will close.

[0004] The structure and assembly process of such spring valve stem assemblies are relatively complex in this field, and their installation is more difficult. Unfortunately, in current production and processing technologies, the entire process is generally done manually, including assembly and inspection. Therefore, in today's era of high automation and intelligence, traditional manual assembly is extremely inefficient, produces inconsistent assembly quality, and lacks thorough inspection, often resulting in defective products being mixed with qualified ones, leading to numerous customer complaints. This also severely restricts the large-scale production of pipe fittings. With an increasingly scarce labor force and rising labor costs, the company's production costs are high, which is detrimental to its long-term production and development. Summary of the Invention

[0005] To overcome the above-mentioned shortcomings of the prior art, the present invention provides an automatic assembly equipment for spring valve stem assemblies and an automatic assembly and testing method thereof.

[0006] The technical solution of this invention to solve its technical problem is: an automatic assembly device for spring valve stem assemblies, comprising:

[0007] A workbench and control device, wherein the workbench is equipped with a circular workstation turntable assembly;

[0008] The circular workstation turntable assembly has several workstations, and each workstation is equipped with a tooling fixture that is compatible with the spring valve stem assembly.

[0009] The circular workstation turntable is surrounded by a threaded end cap feeding assembly mechanism, a rod-shaped threaded valve body feeding assembly mechanism, a snap ring feeding assembly mechanism, a sealing ring feeding assembly mechanism, a spring feeding assembly mechanism, a pressure shaft feeding assembly mechanism, a qualified product unloading mechanism, and a defective product unloading mechanism in sequence.

[0010] The circular workstation turntable assembly includes a stationary disc fixed on the worktable and a moving disc driven by a turntable motor. The tooling fixture includes a fixed fixture seat on the moving disc, a plurality of fixture seat cylinder grippers on the stationary disc, and a fixture seat limiting cylinder assembly on the stationary disc. The fixture seat limiting cylinder assembly is positioned opposite to the rod-shaped threaded valve body feeding assembly mechanism, and the fixture seat cylinder grippers are positioned opposite to the snap ring feeding assembly mechanism, the spring feeding assembly mechanism, and the lower pressure shaft feeding assembly mechanism, respectively.

[0011] The threaded end cap feeding and assembly mechanism includes a threaded end cap vibrating feeder, a threaded end cap transfer assembly, and a threaded end cap picking and placing assembly device.

[0012] The rod-shaped threaded valve body feeding and assembly mechanism includes a rod-shaped threaded valve body feeder, a rod-shaped threaded valve body intermediate seat, and a rod-shaped threaded valve body automatic screwing device.

[0013] The aforementioned snap ring feeding and assembly mechanism includes a snap ring vibrating feeder, a snap ring transfer device, and a snap ring assembly device;

[0014] The sealing ring feeding and assembly mechanism includes a sealing ring vibrating feeding disc, a sealing ring transfer assembly, and a sealing ring picking and placing assembly device;

[0015] The spring feeding and assembly mechanism includes a spring vibrating feed plate, a spring transfer assembly, a spring flipping device, and a spring assembly device;

[0016] The aforementioned pressure shaft feeding assembly mechanism includes a pressure shaft vibrating feed plate, a pressure shaft transfer assembly, and a pressure shaft picking and placing device;

[0017] The qualified product unloading mechanism includes a qualified product unloading channel and a qualified product clamping device;

[0018] The defective product unloading mechanism includes a defective product unloading channel and a defective product clamping device.

[0019] A further configuration of the above technical solution is that the fixed clamp seat includes a clamp seat body, an outer limiting block disposed on the outside of the clamp seat body, and an inner limiting block disposed on the inside of the clamp seat body.

[0020] The clamp base body has a longitudinal through groove in the middle, and the upper end of the clamp base body has a product insertion hole that communicates with the through groove and is arranged vertically. The threaded end cap can be inserted into the product insertion hole.

[0021] A further configuration of the above technical solution is that the clamp seat limiting cylinder assembly includes a limiting telescopic cylinder, a limiting mounting plate driven by the limiting telescopic cylinder, and a limiting protrusion fixed on the limiting mounting plate. The limiting protrusion can extend into the through groove and form a limiting engagement with the lower end of the rod-shaped threaded valve body.

[0022] A further configuration of the above technical solution is that the threaded end cap transfer assembly includes a threaded end cap feed channel, a threaded end cap feed channel driver, a threaded end cap positioning plate disposed at the end of the threaded end cap feed channel, and a first adjusting cylinder for driving the threaded end cap positioning plate.

[0023] The threaded end cap picking and placing assembly device includes a threaded end cap moving module and a threaded end cap cylinder gripper fixed on the threaded end cap moving module.

[0024] A further configuration of the above technical solution is that the rod-shaped threaded valve body feeder includes an inverted conical hopper, a rod-shaped threaded valve body feed channel located directly below the inverted conical hopper, and a rod-shaped threaded valve body feed channel driver;

[0025] The rod-shaped threaded valve body intermediate seat includes a rod-shaped threaded valve body positioning plate disposed at the end of the rod-shaped threaded valve body feed channel, and a second adjusting cylinder for driving the rod-shaped threaded valve body positioning plate. The rod-shaped threaded valve body positioning plate is provided with a rod-shaped threaded valve body positioning groove communicating with the rod-shaped threaded valve body feed channel.

[0026] The automatic screw-in device for the rod-shaped threaded valve body includes a rod-shaped threaded valve body moving module, a first rotating motor fixed on the rod-shaped threaded valve body moving module, and a sleeve subjected to the action of the first rotating motor.

[0027] A further configuration of the above technical solution is that the snap ring transfer device includes a snap ring vertical stacking rack and a flexible channel tube connecting the snap ring vibrating feed plate and the snap ring vertical stacking rack;

[0028] The described snap ring assembly device includes a horizontal rotating motor mounted on a workbench, a snap ring ejection cylinder driven by the horizontal rotating motor, and snap ring clamps fixed to the front end of the snap ring ejection cylinder.

[0029] A further configuration of the above technical solution is that the sealing ring transfer assembly includes a sealing ring feed channel, a sealing ring feed channel driver, and a sealing ring positioning plate disposed at the end of the sealing ring feed channel and having a sealing ring positioning groove.

[0030] The sealing ring picking and placing assembly device includes a vertical lifting cylinder located below the sealing ring positioning plate, a sealing ring positioning sleeve driven by the vertical lifting cylinder, a sealing ring moving module located above the sealing ring positioning plate, and a sealing ring cylinder gripper.

[0031] A further configuration of the above technical solution is that the spring transfer assembly includes a spring shaping feed channel and a spring feed channel driver;

[0032] The spring flipping device includes a flipping motor and a spring insert driven by the flipping motor, the spring insert being able to be inserted into the spring;

[0033] The spring assembly device includes a spring moving module, a second rotating motor mounted on the spring moving module, and a spring cylinder gripper driven by the second rotating motor.

[0034] A further configuration of the above technical solution is that the lower pressure shaft transfer assembly includes a lower pressure shaft feed channel, a lower pressure shaft feed channel driver, a lower pressure shaft positioning plate disposed at the end of the lower pressure shaft feed channel, and a third adjustment cylinder for driving the lower pressure shaft positioning plate.

[0035] The pressure shaft picking and placing assembly device includes a pressure shaft moving module, a third rotary motor mounted on the pressure shaft moving module, and a pressure shaft cylinder gripper driven by the third rotary motor.

[0036] The present invention also provides an automatic assembly and inspection method for spring valve stem assemblies, applicable to the aforementioned automatic assembly equipment for spring valve stem assemblies, comprising:

[0037] Step 1: Start the equipment and place the threaded end cap into the threaded end cap vibrating feed plate, the rod-shaped threaded valve body into the rod-shaped threaded valve body feeder, the snap ring into the snap ring vibrating feed plate, the sealing ring into the sealing ring vibrating feed plate, the spring into the spring vibrating feed plate, and the lower pressure shaft into the lower pressure shaft vibrating feed plate.

[0038] Step 2: The vibrating feeder of the threaded end caps sequentially guides the threaded end caps into the threaded end cap transfer assembly. The threaded end cap picking and assembly device is activated to clamp the threaded end caps and move them to the corresponding fixed fixture. After assembly, the moving disc rotates one station.

[0039] Step 3: The rod-shaped threaded valve body feeder sequentially guides the rod-shaped threaded valve bodies into the rod-shaped threaded valve body transfer assembly. Then, the clamp seat limit cylinder assembly is activated and enters the corresponding fixed clamp seat. Next, the rod-shaped threaded valve body pick-up and assembly device is activated to clamp the rod-shaped threaded valve body and move it above the corresponding fixed clamp seat. Then, the rod-shaped threaded valve body is screwed into the threaded end cap. After assembly, the moving disc rotates one station.

[0040] Step 4: The snap ring vibrating feeder sequentially guides the snap rings into the snap ring transfer device. Then, the corresponding clamping seat cylinder jaws are activated and clamp the rod-shaped threaded valve body. Then, the snap ring assembly device is activated to clamp the snap ring and move it to the corresponding fixed clamping seat. The snap ring is then clamped onto the rod-shaped threaded valve body. After assembly, the moving disc rotates one station.

[0041] Step 5: The vibrating feeder of the sealing rings sequentially feeds the sealing rings into the sealing ring transfer assembly. The sealing ring picking and assembly device is activated to clamp the sealing rings and move them to the corresponding fixed fixture seat. Then, the sealing rings are put onto the rod-shaped threaded valve body. After assembly, the moving disc rotates one station.

[0042] Step 6: The spring vibrating feeder feeds the springs sequentially into the spring transfer device. The spring flipping device picks up the springs from the spring transfer device and flips them. Then, the corresponding clamping seat cylinder jaws start and clamp the rod-shaped threaded valve body. Then, the spring assembly device starts again to clamp the springs and move them to the corresponding fixed clamping seat. The springs are then sleeved on the rod-shaped threaded valve body. After assembly, the moving disc rotates one station.

[0043] Step 7: The vibrating feeder of the lower pressure shaft guides the lower pressure shafts sequentially into the lower pressure shaft transfer device. Then, the corresponding clamping seat cylinder jaws are activated and clamp the rod-shaped threaded valve body. Then, the lower pressure shaft assembly device is activated again to clamp the lower pressure shaft and move it to the corresponding fixed clamping seat. Then, the lower pressure shaft is inserted into the spring. After assembly, the moving disc rotates one station.

[0044] Step 8: Determine whether the spring valve stem assembly is assembled correctly. If it is, the qualified product clamping device will be activated to clamp and move the spring valve stem assembly and place it into the qualified product unloading channel. If it is not qualified, the defective product clamping device will be activated to clamp and move the spring valve stem assembly and place it into the defective product unloading channel.

[0045] The beneficial effects of this invention are as follows: It adopts a large number of automated mechanisms to realize fully automated feeding, positioning assembly and testing of threaded end caps, rod-shaped threaded valve bodies, snap rings, sealing rings, springs and pressure shafts in the spring valve stem assembly, reducing the work area, saving a lot of labor and production costs, greatly improving productivity, and effectively improving the consistency and pass rate of products. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of the present invention.

[0047] Figure 2 This is a top view of the present invention.

[0048] Figure 3 This is a schematic diagram of the product structure of the spring valve stem assembly.

[0049] Figure 4 This is a partial enlarged schematic diagram of the threaded end cap feeding assembly mechanism in this invention.

[0050] Figure 5 This is a partial enlarged schematic diagram of the rod-shaped threaded valve body feeding assembly mechanism in this invention.

[0051] Figure 6 This is a partial enlarged schematic diagram of the snap ring feeding assembly mechanism in this invention.

[0052] Figure 7 This is a partial enlarged schematic diagram of the sealing ring feeding and assembly mechanism in this invention.

[0053] Figure 8 This is a partial enlarged schematic diagram of the spring feeding assembly mechanism in this invention.

[0054] Figure 9 This is a partial enlarged schematic diagram of the feeding assembly mechanism of the lower pressure shaft in this invention.

[0055] Figure 10 This is a partial enlarged schematic diagram of the qualified product unloading mechanism and the defective product unloading mechanism in this invention.

[0056] Figure 11 This is a schematic diagram of the fixed clamp base in this invention.

[0057] Figure 12 This is a schematic diagram of the clamp seat limiting cylinder assembly in this invention.

[0058] Figure 13 This is a flowchart of the product assembly process in this invention.

[0059] In the diagram: 1. Workbench; 101. Stationary disc; 102. Turntable motor; 103. Moving disc; 104. Fixed fixture seat; 1041. Fixture seat body; 1042. Outer limit block; 1043. Inner limit block; 1044. Through slot; 1045. Product insertion hole; 105. Fixture seat cylinder gripper; 106. Fixture seat limit cylinder assembly; 1061. Limit telescopic cylinder; 1062. Limit mounting plate; 1063. Limit protrusion; 3. Threaded end cap feeding assembly mechanism; 301. Threaded end cap vibrating feed plate; 302. Threaded end cap transfer assembly; 3021. Threaded end cap feed channel; 3022. Threaded end cap feed channel driver; 3023. Threaded end cap positioning plate; 3024. First adjustment cylinder; 30 25. Reception area; 303. Threaded end cap picking and placing assembly device; 3031. Threaded end cap moving module; 3032. Threaded end cap cylinder gripper; 4. Rod-shaped threaded valve body feeding assembly mechanism; 401. Rod-shaped threaded valve body feeder; 4011. Inverted cone-shaped hopper; 4012. Rod-shaped threaded valve body feed channel; 4013. Rod-shaped threaded valve body feed channel driver; 402. Rod-shaped threaded valve body intermediate seat; 4021. Rod-shaped threaded valve body positioning plate; 4022. Second adjusting cylinder; 4023. Rod-shaped threaded valve body positioning groove; 404. Rod-shaped threaded valve body automatic screwing device; 4041. Rod-shaped threaded valve body moving module; 4042. First rotating motor; 4043. Sleeve; 5. Snap ring feeding assembly mechanism; 501. Snap ring vibrator 502. Moving feed tray; 5021. Snap ring transfer device; 5022. Snap ring vertical stacking rack; 5023. Flexible channel tube; 504. Snap ring assembly device; 5051. Horizontal rotation motor; 5052. Snap ring ejection cylinder; 5053. Snap ring clamp; 6. Sealing ring feeding assembly mechanism; 601. Sealing ring vibrating feed tray; 602. Sealing ring transfer assembly; 6021. Sealing ring feed channel; 6022. Sealing ring feed channel driver; 6023. Sealing ring positioning groove; 6024. Sealing ring positioning plate; 603. Sealing ring pick-and-place assembly device; 6031. Vertical lifting cylinder; 6032. Sealing ring positioning sleeve; 6033. Sealing ring moving module; 6034. Sealing ring cylinder gripper; 7. Spring feeding assembly mechanism; 701. Spring vibrating feed plate; 702. Spring transfer assembly; 7021. Spring shaping feed channel; 7022. Spring feed channel driver; 703. Spring flipping device; 7031. Flipping motor; 7032. Spring insert rod; 704. Spring assembly device; 7041. Spring moving module; 7042. Second rotating motor; 7043. Spring cylinder gripper; 8. Lower pressure shaft feeding assembly mechanism; 801. Lower pressure shaft vibrating feed plate; 802. Lower pressure shaft transfer assembly; 8021. Lower pressure shaft feed channel; 8022. Lower pressure shaft feed channel driver; 8023. Lower pressure shaft positioning plate; 8024. Third adjusting cylinder; 8025. Receiving slot; 803. Lower pressure shaft picking and placing device; 8031. Lower pressure shaft moving module;8032. Third rotary motor; 8033. Lower pressure shaft cylinder gripper; 9. Qualified product unloading mechanism; 901. Qualified product unloading channel; 902. Qualified product gripping device; 10. Defective product unloading mechanism; 1001. Defective product unloading channel; 1002. Defective product gripping device; 11. Spring valve stem assembly; 1101. Threaded end cap; 1102. Rod-shaped threaded valve body; 1103. Snap ring; 1104. Sealing ring; 1105. Spring; 1106. Lower pressure shaft. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Example 1

[0062] Reference Figures 1 to 13 An automatic assembly device for a spring 1105 valve stem assembly 11 includes:

[0063] The system includes a workbench 1 and a control device. The workbench 1 is equipped with a circular rotary table assembly. The circular rotary table assembly has several workstations, each equipped with a tooling fixture adapted to the spring 1105 valve stem assembly 11. Around the circular rotary table, in sequence, are arranged a threaded end cap 1101 feeding assembly mechanism 3, a rod-shaped threaded valve body 1102 feeding assembly mechanism 4, a retaining ring 1103 feeding assembly mechanism 5, a sealing ring 1104 feeding assembly mechanism 6, a spring 1105 feeding assembly mechanism 7, a lower pressure shaft 1106 feeding assembly mechanism 8, a qualified product unloading mechanism 9, and a defective product unloading mechanism 10. The circular rotary table assembly includes a stationary disc 101 fixed to the workbench 1. The fixture includes a movable disc 103 driven by a turntable motor 102, a fixed fixture seat 104 mounted on the movable disc 103, a plurality of fixture seat cylinder grippers 105 mounted on a stationary disc 101, and a fixture seat limiting cylinder assembly 106 mounted on the stationary disc 101. The fixture seat limiting cylinder assembly 106 is positioned opposite to the rod-shaped threaded valve body 1102 feeding assembly mechanism 4, and the fixture seat cylinder grippers 105 are respectively positioned opposite to the snap ring 1103 feeding assembly mechanism 5, the spring 1105 feeding assembly mechanism 7, and the lower pressure shaft 1106 feeding assembly mechanism 8. The threaded end cap 1101 feeding assembly mechanism 3 includes a threaded end cap 1101 vibration feeding mechanism. The system includes a disc 301, a threaded end cap 1101 transfer assembly 302, and a threaded end cap 1101 pick-and-place assembly device 303; the rod-shaped threaded valve body 1102 feeding assembly mechanism 4 includes a rod-shaped threaded valve body 1102 feeder 401, a rod-shaped threaded valve body 1102 transfer seat 402, and a rod-shaped threaded valve body 1102 automatic screwing device 404; the snap ring 1103 feeding assembly mechanism 5 includes a snap ring 1103 vibrating feed disc 501, a snap ring 1103 transfer device 502, and a snap ring 1103 assembly device 503; the sealing ring 1104 feeding assembly mechanism 6 includes a sealing ring 1104 vibrating feed disc 601, a sealing ring 1104 transfer assembly 602, and... The sealing ring 1104 is picked up and placed by assembly device 603; the spring 1105 feeding assembly mechanism 7 includes a spring 1105 vibrating feeding plate 701, a spring 1105 transfer component 702, a spring 1105 flipping device 703, and a spring 1105 assembly device 704; the lower pressure shaft 1106 feeding assembly mechanism 8 includes a lower pressure shaft 1106 vibrating feeding plate 801, a lower pressure shaft 1106 transfer component 802, and a lower pressure shaft 1106 picking up and placing device 803; the qualified product unloading mechanism 9 includes a qualified product unloading channel 901 and a qualified product clamping device 902; the defective product unloading mechanism 10 includes a defective product unloading channel 1001 and a defective product clamping device 1002.

[0064] The above content constitutes the basic structural scheme of this invention, and the corresponding automatic assembly and inspection method includes:

[0065] Step 1: Start the equipment and place the threaded end cap 1101 into the threaded end cap 1101 vibrating feed plate 301, the rod-shaped threaded valve body 1102 into the rod-shaped threaded valve body 1102 feeder 401, the snap ring 1103 into the snap ring 1103 vibrating feed plate 501, the sealing ring 1104 into the sealing ring 1104 vibrating feed plate 601, the spring 1105 into the spring 1105 vibrating feed plate 701, and the lower pressure shaft 1106 into the lower pressure shaft 1106 vibrating feed plate 801.

[0066] Step 2: The vibrating feed plate 301 of the threaded end cap 1101 guides the threaded end cap 1101 sequentially into the threaded end cap 1101 transfer component 302. The threaded end cap 1101 pick-up and assembly device 303 is activated to clamp the threaded end cap 1101 and move it to the corresponding fixed fixture seat 104. After assembly, the moving disc 103 rotates one station.

[0067] Step 3: The rod-shaped threaded valve body 1102 feeder 401 sequentially guides the rod-shaped threaded valve body 1102 into the rod-shaped threaded valve body 1102 transfer assembly. Then, the clamp seat limit cylinder assembly 106 is activated and enters the corresponding fixed clamp seat 104. Then, the rod-shaped threaded valve body 1102 pick-up and assembly device is activated to clamp the rod-shaped threaded valve body 1102 and move it above the corresponding fixed clamp seat 104. Then, the rod-shaped threaded valve body 1102 is screwed into the threaded end cap 1101. After assembly, the moving disc 103 rotates one station.

[0068] Step 4: The vibrating feed plate 501 guides the snap ring 1103 sequentially into the snap ring 1103 transfer device 502. Then, the corresponding clamping seat cylinder jaw 105 is activated and clamps and fixes the rod-shaped threaded valve body 1102. Then, the snap ring 1103 assembly device 503 is activated to clamp the snap ring 1103 and move it to the corresponding fixed clamping seat 104. Then, the snap ring 1103 is clamped on the rod-shaped threaded valve body 1102. After assembly, the moving disc 103 rotates one station.

[0069] Step 5: The vibrating feed plate 601 of the sealing ring 1104 introduces the sealing ring 1104 sequentially into the sealing ring 1104 transfer component 602. The sealing ring 1104 picking and placing assembly device 603 is started to clamp the sealing ring 1104 and move it to the corresponding fixed fixture seat 104. Then, the sealing ring 1104 is put into the rod-shaped threaded valve body 1102. After assembly, the moving disc 103 rotates one station.

[0070] Step 6: The vibrating feed plate 701 of spring 1105 guides spring 1105 sequentially into the spring 1105 transfer device. The spring 1105 flipping device 703 inserts spring 1105 from the spring 1105 transfer device and flips spring 1105. Then, the corresponding clamping seat cylinder jaw 105 starts and clamps and fixes the rod-shaped threaded valve body 1102. Then, the spring 1105 assembly device 704 starts again to clamp spring 1105 and move it to the corresponding fixed clamping seat 104. Then, spring 1105 is sleeved on the rod-shaped threaded valve body 1102. After assembly, the moving disc 103 rotates one station.

[0071] Step 7: The vibrating feed plate 801 of the lower pressure shaft 1106 sequentially guides the lower pressure shaft 1106 to the lower pressure shaft 1106 transfer device. Then, the corresponding clamping seat cylinder jaw 105 is activated and clamps and fixes the rod-shaped threaded valve body 1102. Then, the lower pressure shaft 1106 assembly device is activated again to clamp the lower pressure shaft 1106 and move it to the corresponding fixed clamping seat 104. Then, the lower pressure shaft 1106 is inserted into the spring 1105. After assembly, the moving disc 103 rotates one station.

[0072] Step 8: Determine whether the spring 1105 valve stem assembly 11 is assembled correctly. If it is, the qualified product clamping device 902 is activated to clamp and move the spring 1105 valve stem assembly 11 and place it into the qualified product unloading channel 901. If it is not qualified, the defective product clamping device 1002 is activated to clamp and move the spring 1105 valve stem assembly 11 and place it into the defective product unloading channel 1001.

[0073] In this invention, preferably, visual inspection camera components can also be installed at each workstation to check whether the product is qualified at each step. Of course, other inspection methods can also be used, and no special limitation is made here.

[0074] Example 2

[0075] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the fixed clamp base 104, specifically as follows: (Refer to...) Figure 11 The fixed clamp base 104 includes a clamp base body 1041, an outer limiting block 1042 disposed on the outer side of the clamp base body 1041, and an inner limiting block 1043 disposed on the inner side of the clamp base body 1041; a longitudinal through groove 1044 is provided in the middle of the clamp base body 1041, and a product insertion hole 1045 is provided at the upper end of the clamp base body 1041, which communicates with the through groove 1044 and is arranged vertically; the threaded end cap 1101 can be inserted into the product insertion hole 1045.

[0076] The product insertion hole 1045 on the fixture body 1041 is used for inserting the threaded end cap 1101 in step one, and then other components are assembled onto the threaded end cap 1101 in sequence. Secondly, due to the fixture seat limiting cylinder assembly 106 on the inner stationary disc 101 and the various ejection cylinders on each station on the outer side, the cylinders will move towards the fixture body 1041 when in use. Through the setting of the inner limiting block 1043 and the outer limiting block 1042, an effective motion limiting function can be provided on the one hand, and the fixture body 1041 can be protected on the other hand. Furthermore, the through slot 1044 is mainly to facilitate the insertion of the fixture seat limiting cylinder assembly 106, so that the fixture seat limiting cylinder assembly 106 can be at least partially (limiting protrusion 1063) located directly below the threaded end cap 1101. During the process of screwing the rod-shaped threaded valve body 1102 into the threaded end cap 1101, the fixture seat limiting cylinder assembly 106 can limit the rod-shaped threaded valve body 1102 to prevent over-screwing or under-screwing, thereby greatly improving the product assembly accuracy and consistency.

[0077] For further details regarding the above technical solution, please refer to... Figure 12 The clamp seat limiting cylinder assembly 106 includes a limiting telescopic cylinder 1061, a limiting mounting plate 1062 driven by the limiting telescopic cylinder 1061, and a limiting protrusion 1063 fixed on the limiting mounting plate 1062. In use, the limiting protrusion 1063 can extend into the through groove 1044 and form a limiting engagement with the lower end of the rod-shaped threaded valve body 1102.

[0078] Example 3

[0079] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the feeding assembly mechanism 3 of the threaded end cap 1101, specifically as follows:

[0080] Reference Figure 4The threaded end cap 1101 transfer assembly 302 includes a threaded end cap 1101 feed channel 3021, a threaded end cap 1101 feed channel 3021 driver, a threaded end cap 1101 positioning plate 3023 disposed at the end of the threaded end cap 1101 feed channel 3021, and a first adjusting cylinder 3024 for driving the threaded end cap 1101 positioning plate 3023; wherein, different types of threaded end caps 1101 can be provided in the threaded end cap 1101 positioning plate 3023, and the first adjusting cylinder 3024 is mainly used to adjust the position of the threaded end cap 1101 positioning plate 3023 relative to the threaded end cap 1101 feed channel 3021, so as to meet the usage requirements of different types of threaded end caps 1101. The threaded end cap 1101 pick-up and assembly device 303 includes a threaded end cap 1101 moving module 3031 and a threaded end cap 1101 cylinder gripper 3032 fixed on the threaded end cap 1101 moving module 3031.

[0081] Before production, the first adjusting cylinder 3024 is used to adjust the positioning plate 3023 of the threaded end cover 1101 to the correct position. During startup, the threaded end covers 1101 in the vibrating feed plate 301 enter the feed channel 3021 of the threaded end cover 1101 in sequence, and move forward to the positioning plate 3023 of the threaded end cover 1101 under the action of the feed channel 3021 driver. Then, the moving module 3031 of the threaded end cover 1101 starts and drives the cylinder gripper 3032 of the threaded end cover 1101 to move vertically and longitudinally, so that the cylinder gripper 3032 of the threaded end cover 1101 can pick up the threaded end cover 1101 on the positioning plate 3023 and place it into the corresponding tooling fixture.

[0082] Example 4

[0083] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the feeding assembly mechanism 4 of the rod-shaped threaded valve body 1102, specifically as follows:

[0084] Reference Figure 5 The rod-shaped threaded valve body 1102 feeder 401 includes an inverted conical hopper 4011, a rod-shaped threaded valve body 1102 feed channel 4012 located directly below the inverted conical hopper 4011, and a rod-shaped threaded valve body 1102 feed channel 4012 driver.

[0085] The rotating seat 402 of the rod-shaped threaded valve body 1102 includes a rod-shaped threaded valve body 1102 positioning plate 4021 disposed at the end of the rod-shaped threaded valve body 1102 feed channel 4012, and a second adjusting cylinder 4022 for driving the rod-shaped threaded valve body 1102 positioning plate 4021. The rod-shaped threaded valve body 1102 positioning plate 4021 is provided with a rod-shaped threaded valve body 1102 positioning groove 4023 communicating with the rod-shaped threaded valve body 1102 feed channel 4012. The rod-shaped threaded valve body 1102 positioning groove 4023 of different models of rod-shaped threaded valve bodies 1102 can be opened on the rod-shaped threaded valve body 1102 positioning plate 4021. The second adjusting cylinder 4022 is mainly used to adjust the position of the rod-shaped threaded valve body 1102 positioning plate 4021 relative to the rod-shaped threaded valve body 1102 feed channel 4012, so as to meet the usage requirements of different models of rod-shaped threaded valve bodies 1102.

[0086] The automatic screwing device 404 for the rod-shaped threaded valve body 1102 includes a rod-shaped threaded valve body 1102 moving module 4041, a first rotating motor 4042 fixed on the rod-shaped threaded valve body 1102 moving module 4041, and a sleeve 4043 subjected to the action of the first rotating motor 4042.

[0087] Before production, the second adjusting cylinder 4022 is used to adjust the positioning plate 4021 of the rod-shaped threaded valve body 1102 to the correct position. During startup, the rod-shaped threaded valve body 1102 in the inverted conical hopper 4011 enters the rod-shaped threaded valve body 1102 feed channel 4012 in sequence, and moves forward to the rod-shaped threaded valve body 1102 positioning plate 4021 under the action of the rod-shaped threaded valve body 1102 feed channel 4012 driver. Then, the rod-shaped threaded valve body 1102 moving module 4041 starts and drives the first rotating motor 4042 to move vertically and longitudinally, so that the sleeve 4043 on the first rotating motor 4042 clamps the rod-shaped threaded valve body 1102 on the rod-shaped threaded valve body 1102 positioning plate 4021 and places it into the corresponding tooling fixture. Then, the fixture seat limiting cylinder assembly 106 starts and enters the corresponding fixed fixture seat 104. Finally, the first rotating motor 4042 starts and screws the rod-shaped threaded valve body 1102 and the threaded end cap 1101 together.

[0088] Example 5

[0089] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the transfer device 502 with the snap ring 1103, specifically as follows:

[0090] Reference Figure 6The transfer device 502 of the snap ring 1103 includes a vertical stacking rack 5021 for snap ring 1103 and a flexible channel tube 5022 connected between the vibrating feed plate 501 of snap ring 1103 and the vertical stacking rack 5021 of snap ring 1103.

[0091] The described snap ring 1103 assembly device 503 includes a horizontal rotation motor 5031 mounted on the workbench 1, a snap ring 1103 ejection cylinder 5032 driven by the horizontal rotation motor 5031, and a snap ring 1103 clamp 5033 fixed to the front end of the snap ring 1103 ejection cylinder 5032.

[0092] During startup, the vibrating feed plate 501 guides the snap rings 1103 sequentially into the flexible channel tube 5022. The snap rings 1103 then travel along the flexible channel tube 5022 into the vertical stacking rack 5021. The snap rings 1103 are then neatly stacked vertically in the rack 5021. The horizontal rotation motor 5031 starts, driving the snap ring clamps 5033 to rotate. Pick up the snap ring 1103 from the vertical stacking rack, and then rotate it back to the corresponding fixed clamp seat 104. At this time, the corresponding clamp seat cylinder jaw 105 is activated and clamps and fixes the rod-shaped threaded valve body 1102. Finally, the snap ring 1103 ejection cylinder 5032 is activated and pushes the snap ring 1103 clamp 5033 forward into the through groove 1044 so that the snap ring 1103 is locked on the rod-shaped threaded valve body 1102.

[0093] Example 6

[0094] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the feeding and assembly mechanism 6 of the sealing ring 1104, specifically as follows:

[0095] Reference Figure 7 The sealing ring 1104 transfer assembly 602 includes a sealing ring 1104 feed channel 6021, a sealing ring 1104 feed channel 6021 driver, and a sealing ring 1104 positioning plate 6024 disposed at the end of the sealing ring 1104 feed channel 6021 and having a sealing ring 1104 positioning groove 6023.

[0096] The sealing ring 1104 picking and placing assembly device 603 includes a vertical lifting cylinder 6031 disposed below the sealing ring 1104 positioning plate 6024, a sealing ring 1104 positioning sleeve 6032 driven by the vertical lifting cylinder 6031, a sealing ring 1104 moving module 6033 located above the sealing ring 1104 positioning plate 6024, and a sealing ring 1104 cylinder gripper 6034.

[0097] During startup, the sealing rings 1104 in the vibrating feed plate 601 enter the sealing ring 1104 feed channel 6021 in sequence, and under the action of the driver of the sealing ring 1104 feed channel 6021, they move forward to the sealing ring 1104 positioning groove 6023 of the sealing ring 1104 positioning plate 6024. Then, the vertical lifting cylinder 6031 lifts the sealing ring 1104 positioning sleeve 6032 to support the sealing ring 1104. Then, the sealing ring 1104 moving module 6033 starts to drive the sealing ring 1104 cylinder gripper 6034 to move vertically and longitudinally, so that the sealing ring 1104 cylinder gripper 6034 can clamp the sealing ring 1104 on the sealing ring 1104 positioning plate 6024 and place it into the corresponding tooling fixture, and put the sealing ring 1104 onto the rod-shaped threaded valve body 1102.

[0098] Example 7

[0099] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the spring 1105 transfer assembly 702, specifically as follows:

[0100] Reference Figure 8 The spring 1105 transfer assembly 702 includes a spring 1105 shaping feed channel 7021 and a spring 1105 feed channel driver 7022;

[0101] The spring 1105 flipping device 703 includes a flipping motor 7031 and a spring 1105 insertion rod 7032 driven by the flipping motor 7031, wherein the spring 1105 insertion rod 7032 can be inserted into the spring 1105.

[0102] The spring 1105 assembly device 704 includes a spring 1105 moving module 7041, a second rotating motor 7042 disposed on the spring 1105 moving module 7041, and a spring 1105 cylinder gripper 7043 driven by the second rotating motor 7042.

[0103] During startup, springs 1105 in the vibrating feed plate 701 sequentially enter the spring 1105 shaping feed channel 7021 and move forward sequentially under the action of the spring 1105 feed channel driver 7022. Then, the flip motor 7031 starts, causing the spring 1105 insertion rod 7032 to move and insert into the spring 1105 at the end of the spring 1105 shaping feed channel 7021. After insertion, the flip motor 7031 rotates, and then the spring 1105 moving module 7041 starts, driving the second rotation motor 7042 to achieve vertical rotation. The spring 1105 moves longitudinally and laterally so that the spring 1105 cylinder clamp 7043 on the second rotary motor 7042 can clamp the spring 1105 on the spring 1105 insert rod 7032 and place it into the corresponding tooling fixture. The corresponding fixture seat cylinder clamp 105 is activated and clamps and fixes the rod-shaped threaded valve body 1102. Finally, the second rotary motor 7042 is activated, and the spring 1105 cylinder clamp 7043 cooperates to rotate the spring 1105 onto the rod-shaped threaded valve body 1102 so that the spring 1105 can be assembled into place in one go.

[0104] Example 8

[0105] Based on the structure of Embodiment 1, this embodiment provides a preferred solution for the feeding assembly mechanism 8 of the lower pressure shaft 1106, specifically as follows:

[0106] Reference Figure 9 The transfer assembly 802 for the lower pressure shaft 1106 includes a lower pressure shaft 1106 feed channel 8021, a lower pressure shaft 1106 feed channel 8021 driver, a lower pressure shaft 1106 positioning plate 8023 disposed at the end of the lower pressure shaft 1106 feed channel 8021, and a third adjusting cylinder 8024 for driving the lower pressure shaft 1106 positioning plate 8023. Different types of lower pressure shaft 1106 receiving slots 8025 can be opened on the lower pressure shaft 1106 positioning plate 8023. The third adjusting cylinder 8024 is mainly used to adjust the position of the lower pressure shaft 1106 positioning plate 8023 relative to the lower pressure shaft 1106 feed channel 8021, so as to meet the usage requirements of different types of lower pressure shaft 1106. The pressing shaft 1106 pick-and-place assembly device includes a pressing shaft 1106 moving module 8031 ​​and a pressing shaft 1106 cylinder gripper 8033 fixed on the pressing shaft 1106 moving module 8031. The pressing shaft 1106 pick-and-place assembly device includes a pressing shaft 1106 moving module 8031, a third rotary motor 8032 disposed on the pressing shaft 1106 moving module 8031, and a pressing shaft 1106 cylinder gripper 8033 driven by the third rotary motor 8032.

[0107] Before production, the third adjusting cylinder 8024 is used to adjust the positioning plate 8023 of the lower pressing shaft 1106 to the correct position. During startup, the lower pressure shaft 1106 in the vibrating feed plate 801 enters the lower pressure shaft 1106 feed channel 8021 in sequence, and moves forward to the lower pressure shaft 1106 positioning plate 8023 under the action of the lower pressure shaft 1106 feed channel 8021 driver. Then, the lower pressure shaft 1106 moving module 8031 ​​starts and drives the lower pressure shaft 1106 cylinder gripper 8033 to move vertically and longitudinally, so that the lower pressure shaft 1106 cylinder gripper 8033 can clamp the lower pressure shaft 1106 on the lower pressure shaft 1106 positioning plate 8023 and move it to the corresponding tooling fixture. Finally, the third rotary motor 8032 is started, and in conjunction with the lower pressure shaft 1106 cylinder gripper 8033, the spring 1105 is rotated through the spring 1105 and partially inserted into the rod-shaped threaded valve body 1102, so that the lower pressure shaft 1106 can be assembled into place in one go.

[0108] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the invention shall still fall within the protection scope of the present invention.

Claims

1. An automatic assembly device for a spring valve stem assembly, comprising: A workbench (1) and a control device, wherein the workbench (1) is provided with a circular workstation turntable assembly; The circular workstation turntable assembly is provided with several workstations, and each workstation is provided with a tooling fixture that is compatible with the spring (1105) valve stem assembly (11). The feature is that the circular workstation turntable is surrounded by a threaded end cap (1101) feeding assembly mechanism (3), a rod-shaped threaded valve body (1102) feeding assembly mechanism (4), a snap ring (1103) feeding assembly mechanism (5), a sealing ring (1104) feeding assembly mechanism (6), a spring (1105) feeding assembly mechanism (7), a pressure shaft (1106) feeding assembly mechanism (8), a qualified product unloading mechanism (9), and a defective product unloading mechanism (10) in sequence; The circular workstation turntable assembly includes a stationary disc (101) fixed on the worktable (1) and a moving disc (103) driven by the turntable motor (102). The tooling fixture includes a fixed fixture seat (104) set on the moving disc (103), a plurality of fixture seat cylinder grippers (105) set on the stationary disc (101), and a fixture seat limiting cylinder assembly (106) set on the stationary disc (101). The fixture seat limiting cylinder assembly (106) is positioned opposite to the rod-shaped threaded valve body (1102) feeding assembly mechanism (4), and the fixture seat cylinder grippers (105) are positioned opposite to the snap ring (1103) feeding assembly mechanism (5), the spring (1105) feeding assembly mechanism (7), and the lower pressure shaft (1106) feeding assembly mechanism (8), respectively. The threaded end cap (1101) feeding assembly mechanism (3) includes a threaded end cap (1101) vibrating feeder (301), a threaded end cap (1101) transfer assembly (302), and a threaded end cap (1101) pick-up and placement assembly device (303); The rod-shaped threaded valve body (1102) feeding and assembly mechanism (4) includes a rod-shaped threaded valve body (1102) feeder (401), a rod-shaped threaded valve body (1102) transfer seat (402), a rod-shaped threaded valve body (1102) pick-and-place device, and a rod-shaped threaded valve body (1102) automatic screwing device (404); The described snap ring (1103) feeding and assembly mechanism (5) includes a snap ring (1103) vibrating feeder (501), a snap ring (1103) transfer device (502), and a snap ring (1103) assembly device (503); The sealing ring (1104) feeding and assembly mechanism (6) includes a sealing ring (1104) vibrating feeding plate (601), a sealing ring (1104) transfer assembly (602), and a sealing ring (1104) picking and placing assembly device (603); The spring (1105) feeding and assembly mechanism (7) includes a spring (1105) vibrating feeding plate (701), a spring (1105) transfer assembly (702), a spring (1105) flipping device (703), and a spring (1105) assembly device (704); The lower pressure shaft (1106) feeding assembly mechanism (8) includes a lower pressure shaft (1106) vibrating feed plate (801), a lower pressure shaft (1106) transfer assembly (802), and a lower pressure shaft (1106) pick-up and put-out device (803); The qualified product unloading mechanism (9) includes a qualified product unloading channel (901) and a qualified product clamping device (902); The defective product unloading mechanism (10) includes a defective product unloading channel (1001) and a defective product clamping device (1002).

2. The automatic assembly apparatus of a spring valve stem assembly according to claim 1, characterized in that: The fixed clamp seat (104) includes a clamp seat body (1041), an outer limiting block (1042) disposed on the outside of the clamp seat body (1041), and an inner limiting block (1043) disposed on the inside of the clamp seat body (1041). The clamp base body (1041) has a longitudinal through groove (1044) in the middle, and the upper end of the clamp base body (1041) has a product insertion hole (1045) that communicates with the through groove (1044) and is arranged vertically. The threaded end cap (1101) can be inserted into the product insertion hole (1045).

3. The automatic assembly apparatus of a spring valve stem assembly according to claim 2, wherein: The clamp seat limiting cylinder assembly (106) includes a limiting telescopic cylinder (1061), a limiting mounting plate (1062) driven by the limiting telescopic cylinder (1061), and a limiting protrusion (1063) fixed on the limiting mounting plate (1062). The limiting protrusion (1063) can extend into the through groove (1044) and form a limiting engagement with the lower end of the rod-shaped threaded valve body (1102).

4. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The threaded end cap (1101) transfer assembly (302) includes a threaded end cap (1101) feed channel (3021), a threaded end cap (1101) feed channel (3021) driver, a threaded end cap (1101) positioning plate (3023) disposed at the end of the threaded end cap (1101) feed channel (3021), and a first adjusting cylinder (3024) for driving the threaded end cap (1101) positioning plate (3023); The threaded end cap (1101) pick-up and assembly device (303) includes a threaded end cap (1101) moving module (3031) and a threaded end cap (1101) cylinder gripper (3032) fixed on the threaded end cap (1101) moving module (3031).

5. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The rod-shaped threaded valve body (1102) feeder (401) includes an inverted conical hopper (4011), a rod-shaped threaded valve body (1102) feed channel (4012) located directly below the inverted conical hopper (4011), and a rod-shaped threaded valve body (1102) feed channel (4012) driver; The rotating seat (402) of the rod-shaped threaded valve body (1102) includes a rod-shaped threaded valve body (1102) positioning plate (4021) disposed at the end of the feed channel (4012) of the rod-shaped threaded valve body (1102) and a second adjusting cylinder (4022) for driving the positioning plate (4021) of the rod-shaped threaded valve body (1102). The positioning plate (4021) of the rod-shaped threaded valve body (1102) is provided with a positioning groove (4023) of the rod-shaped threaded valve body (1102) communicating with the feed channel (4012) of the rod-shaped threaded valve body (1102). The automatic screwing device (404) for the rod-shaped threaded valve body (1102) includes a rod-shaped threaded valve body (1102) moving module (4041), a first rotating motor (4042) fixed on the rod-shaped threaded valve body (1102) moving module (4041), and a sleeve (4043) acted upon by the first rotating motor (4042).

6. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The circlip (1103) transfer device (502) includes a circlip (1103) vertical stacking rack (5021) and a flexible channel tube (5022) connected between the circlip (1103) vibrating feed plate (501) and the circlip (1103) vertical stacking rack (5021); The snap ring (1103) assembly device (503) includes a horizontal rotation motor (5031) mounted on the workbench (1), a snap ring (1103) ejection cylinder (5032) driven by the horizontal rotation motor (5031), and a snap ring (1103) clamp (5033) fixed to the front end of the snap ring (1103) ejection cylinder (5032).

7. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The sealing ring (1104) transfer assembly (602) includes a sealing ring (1104) feed channel (6021), a sealing ring (1104) feed channel (6021) driver, and a sealing ring (1104) positioning plate (6024) disposed at the end of the sealing ring (1104) feed channel (6021) and having a sealing ring (1104) positioning groove (6023); The sealing ring (1104) pick-and-place assembly device (603) includes a vertical lifting cylinder (6031) disposed below the sealing ring (1104) positioning plate (6024), a sealing ring (1104) positioning sleeve (6032) driven by the vertical lifting cylinder (6031), a sealing ring (1104) moving module (6033) located above the sealing ring (1104) positioning plate (6024), and a sealing ring (1104) cylinder gripper (6034).

8. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The spring (1105) transfer assembly (702) includes a spring (1105) shaping feed channel (7021) and a spring (1105) feed channel driver (7022); The spring (1105) flipping device (703) includes a flipping motor (7031) and a spring (1105) insert (7032) driven by the flipping motor (7031), wherein the spring (1105) insert (7032) can be inserted into the spring (1105); The spring (1105) assembly device (704) includes a spring (1105) moving module (7041), a second rotating motor (7042) disposed on the spring (1105) moving module (7041), and a spring (1105) cylinder gripper (7043) driven by the second rotating motor (7042).

9. The automatic assembly equipment for the spring valve stem assembly according to claim 1 or 2, characterized in that: The aforementioned pressure shaft (1106) transfer assembly (802) includes a pressure shaft (1106) feed channel (8021), a pressure shaft (1106) feed channel (8021) driver, a pressure shaft (1106) positioning plate (8023) disposed at the end of the pressure shaft (1106) feed channel (8021), and a third adjusting cylinder (8024) for driving the pressure shaft (1106) positioning plate (8023); The pressing shaft (1106) picking and placing assembly device includes a pressing shaft (1106) moving module (8031), a third rotary motor (8032) disposed on the pressing shaft (1106) moving module (8031), and a pressing shaft (1106) cylinder gripper (8033) driven by the third rotary motor (8032).

10. An automatic assembly and inspection method for a spring valve stem assembly, applicable to the automatic assembly equipment for the spring valve stem assembly according to any one of claims 1-9, characterized in that, include: Step 1: Start the equipment and place the threaded end cap (1101) into the threaded end cap (1101) vibrating feed plate (301), the rod-shaped threaded valve body (1102) into the rod-shaped threaded valve body (1102) feeder (401), the snap ring (1103) into the snap ring (1103) vibrating feed plate (501), the sealing ring (1104) into the sealing ring (1104) vibrating feed plate (601), the spring (1105) into the spring (1105) vibrating feed plate (701), and the lower pressure shaft (1106) into the lower pressure shaft (1106) vibrating feed plate (801). Step 2: The vibrating feed plate (301) of the threaded end cap (1101) sequentially feeds the threaded end cap (1101) into the threaded end cap (1101) transfer assembly (302). The threaded end cap (1101) pick-up and assembly device (303) is activated to clamp the threaded end cap (1101) and move it to the corresponding fixed fixture seat (104). After assembly, the moving disc (103) rotates one station. Step 3: The rod-shaped threaded valve body (1102) feeder (401) sequentially guides the rod-shaped threaded valve body (1102) into the rod-shaped threaded valve body (1102) transfer assembly. Then, the clamp seat limit cylinder assembly (106) is activated and enters the corresponding fixed clamp seat (104). Then, the rod-shaped threaded valve body (1102) pick-up and assembly device is activated to clamp the rod-shaped threaded valve body (1102) and move it above the corresponding fixed clamp seat (104). Then, the rod-shaped threaded valve body (1102) is screwed into the threaded end cap (1101). After assembly, the moving disc (103) rotates one station. Step 4: The circlip (1103) vibrating feed plate (501) sequentially guides the circlip (1103) into the circlip (1103) transfer device (502). Then, the corresponding clamping seat cylinder jaw (105) starts and clamps and fixes the rod-shaped threaded valve body (1102). Then, the circlip (1103) assembly device (503) starts to clamp the circlip (1103) and move it to the corresponding fixed clamping seat (104). Then, the circlip (1103) is clamped on the rod-shaped threaded valve body (1102). After assembly, the moving disc (103) rotates one station. Step 5: The vibrating feed plate (601) of the sealing ring (1104) sequentially feeds the sealing ring (1104) into the sealing ring (1104) transfer assembly (602). The sealing ring (1104) pick-up and assembly device (603) is activated to clamp the sealing ring (1104) and move it to the corresponding fixed fixture seat (104). Then, the sealing ring (1104) is put into the rod-shaped threaded valve body (1102). After assembly, the moving disc (103) rotates one station. Step 6: The spring (1105) vibrating feed plate (701) sequentially feeds the spring (1105) into the spring (1105) transfer device. The spring (1105) flipping device (703) inserts the spring (1105) on the spring (1105) transfer device and flips the spring (1105). Then, the corresponding clamping seat cylinder jaw (105) starts and clamps and fixes the rod-shaped threaded valve body (1102). Then, the spring (1105) assembly device (704) starts again to clamp the spring (1105) and move it to the corresponding fixed clamping seat (104). Then, the spring (1105) is sleeved on the rod-shaped threaded valve body (1102). After assembly, the moving disc (103) rotates one station. Step 7: The vibrating feed plate (801) of the lower pressure shaft (1106) sequentially guides the lower pressure shaft (1106) to the lower pressure shaft (1106) transfer device. Then, the corresponding clamping seat cylinder jaw (105) is activated and clamps and fixes the rod-shaped threaded valve body (1102). Then, the lower pressure shaft (1106) assembly device is activated again to clamp the lower pressure shaft (1106) and move it to the corresponding fixed clamping seat (104). Then, the lower pressure shaft (1106) is inserted into the spring (1105). After assembly, the moving disc (103) rotates one station. Step 8: Determine whether the spring (1105) valve stem assembly (11) is assembled correctly. If it is, the qualified product clamping device (902) is activated to clamp and move the spring (1105) valve stem assembly (11) and place it into the qualified product unloading channel (901). If it is not qualified, the defective product clamping device (1002) is activated to clamp and move the spring (1105) valve stem assembly (11) and place it into the defective product unloading channel (1001).

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