One-way valve precision manufacturing equipment and control method thereof

Abstract

The application relates to a one-way valve precision manufacturing device and a control method thereof, and relates to the technical field of one-way valve manufacturing devices. The one-way valve precision manufacturing device comprises a workbench, a valve body clamping mechanism, a valve seat clamping mechanism, a butt joint mechanism, a welding mechanism and a sealing mechanism, and further comprises a rotating adsorption mechanism installed on the workbench and used for driving the valve body and the valve seat to synchronously rotate and adsorbing welding slag scraps while rotating; the rotating adsorption mechanism comprises a first threaded rod rotatably installed on the workbench and connected with the valve seat clamping mechanism, a first motor installed on the workbench and used for driving the first threaded rod to rotate, an adsorption assembly installed on the first threaded rod and used for adsorbing the welding slag scraps when the first threaded rod rotates, and a collecting box installed on the workbench and used for collecting the welding slag scraps adsorbed by the adsorption assembly. The application has the effect of preventing welding slag scraps generated during welding from flying and adhering to the surface of the valve body and affecting the appearance quality of the product.

Description

Technical Field

[0001] This invention relates to the field of one-way valve manufacturing equipment technology, and in particular to a precision manufacturing equipment for one-way valves and its control method. Background Technology

[0002] One-way valves are key components in fluid control systems that prevent backflow of media. The welding quality of the valve body and seat directly determines the valve's sealing performance, pressure resistance, and service life. The uniformity, concentricity, and surface quality of the weld are core indicators for ensuring the reliable operation of one-way valves under harsh conditions such as high pressure and corrosion. Welding and post-weld grinding are the fundamental processes that determine the above quality.

[0003] Existing precision manufacturing equipment for one-way valves includes a clamping mechanism, a docking mechanism, a sealing mechanism, and a welding gun. During operation, the operator places the valve body and valve seat in the corresponding clamping mechanism, then activates the clamping mechanism to fix the valve seat and valve body together. Next, the docking mechanism is activated to dock the valve body and valve seat together. Then, the sealing mechanism is activated to seal the docked valve body and valve seat. Finally, the welding gun completes a weld around the joint between the valve body and valve seat.

[0004] In the above structure, a large amount of welding slag and debris will be generated during the welding process between the valve body and the valve seat. At this time, it is impossible to effectively absorb the flying welding slag and debris, which will cause the flying welding slag to easily adhere to the surface of the valve body, thereby greatly reducing the appearance quality of the product. Summary of the Invention

[0005] To prevent welding slag and debris from splashing onto the valve body surface and affecting the product's appearance quality, this invention provides a precision manufacturing equipment for one-way valves and its control method.

[0006] In a first aspect, the present invention provides a precision manufacturing equipment for a one-way valve, which adopts the following technical solution: A precision manufacturing equipment for a one-way valve includes a worktable, a valve body clamping mechanism for clamping the valve body, a valve seat clamping mechanism for clamping the valve seat, a docking mechanism for driving the valve body and valve seat to dock, a welding mechanism for welding the docking point of the valve body and valve seat, and a sealing mechanism for sealing the valve body and valve seat during welding. It also includes a rotary adsorption mechanism installed on the worktable for driving the valve body and valve seat to rotate synchronously and adsorbing welding slag and debris while rotating. The rotary adsorption mechanism includes a first threaded rod rotatably mounted on a workbench and connected to the valve seat clamping mechanism, a first motor mounted on the workbench and used to drive the first threaded rod to rotate, an adsorption assembly mounted on the first threaded rod and used to adsorb welding slag debris when the first threaded rod rotates, and a collection box mounted on the workbench and used to collect the welding slag debris absorbed by the adsorption assembly.

[0007] By adopting the above technical solution, the first motor drives the first threaded rod to rotate. When the first threaded rod rotates, it drives the valve body and valve seat to rotate synchronously to achieve uniform circumferential welding. On the other hand, it drives the adsorption component to work, thereby generating negative pressure, which in turn adsorbs and collects the welding slag and debris generated during the welding process in real time, effectively preventing the welding slag and debris from splashing and adhering to the valve body surface, thereby greatly improving the product appearance quality.

[0008] Optionally, the workbench has an internal cavity, and a support frame is installed inside the cavity, which divides the cavity into an air supply cavity and a drive cavity; the adsorption assembly is installed in the air supply cavity, and the first threaded rod and the first motor are installed in the drive cavity; The adsorption assembly includes a second threaded rod installed inside the air delivery chamber, a drive plate threaded to the first threaded rod and driving the second threaded rod to rotate synchronously when the first threaded rod rotates, and a rotating fan ring installed on the second threaded rod and generating wind when the second threaded rod rotates.

[0009] By adopting the above technical solution, an air supply chamber and a drive chamber are separated inside the workbench, and the second threaded rod, drive plate, and rotating fan ring are placed in the air supply chamber. When the first threaded rod rotates, the drive plate synchronously drives the second threaded rod to rotate, thereby causing the rotating fan ring to generate suction air force to attract welding slag and debris.

[0010] Optionally, the top of the workbench is provided with a drop hole, which is connected to the air supply chamber, and the air outlet of the air supply chamber is connected to an air outlet pipe; the collection box is located in the air supply chamber, and the collection box is provided with a vent hole, and the rotating fan ring is located directly below the vent hole. The diameter of the drop hole is larger than that of the vent hole so that welding slag debris can fall through the drop hole into the collection box and be blocked by the vent hole. The airflow generated by the rotating fan ring enters through the drop hole, passes through the vent hole and air supply chamber, and is discharged through the air outlet pipe to form a downward adsorption force at the drop hole, adsorbing the welding slag debris into the collection box for collection.

[0011] By adopting the above technical solution, a drop hole is opened on the top of the workbench and connected to the air supply chamber, the collection box and the air outlet pipe. The diameter of the drop hole is larger than the diameter of the air vent hole of the collection box. Therefore, when the rotating fan ring rotates and forms a downward suction airflow, the welding slag and debris will fall into the collection box through the drop hole and be intercepted by the air vent hole. The airflow will be discharged through the air outlet pipe, thereby realizing the centralized collection of welding slag and debris.

[0012] Optionally, a connecting frame is mounted on the workbench, and the sealing mechanism is mounted on the connecting frame; The sealing mechanism includes a sealing half-frame that is slidably mounted on the worktable, a sliding plate mounted on the sealing half-frame and slidably mounted on the connecting frame, a third threaded rod mounted on the connecting frame for driving the sliding plate to move, a dual-axis motor mounted on the connecting frame for driving the third threaded rod to rotate, and a grinding half-ring mounted on the sealing half-frame for grinding the weld between the valve body and the valve seat.

[0013] By adopting the above technical solution, the dual-axis motor drives the third threaded rod to rotate, causing the sliding plates to move in opposite directions, thereby achieving precise closure of the sealing half-frame and forming a complete sealed chamber, effectively preventing welding slag and debris from splashing outwards. Simultaneously, a grinding half-ring is integrated on the sealing half-frame, forming a complete grinding ring when the sealing half-frame is closed. This allows for grinding of the weld joint after welding, thereby improving the surface quality of the weld.

[0014] Optionally, the docking mechanism is mounted on the connecting frame; The docking mechanism includes a lifting plate mounted on the connecting frame, a hydraulic cylinder mounted on the connecting frame for driving the lifting plate to move up and down, and a limiting telescopic column mounted between the lifting plate and the connecting frame for limiting and guiding the lifting plate when it moves up and down.

[0015] By adopting the above technical solution, the hydraulic cylinder drives the lifting plate to rise and fall vertically along the limiting telescopic column, thereby realizing the overall smooth downward movement of the valve body clamping mechanism, so that the valve body and valve seat interface are accurately connected. In addition, the limiting telescopic column provides guidance and limiting functions during the lifting and lowering process, ensuring that there is no deviation during the connection process, thereby improving the connection accuracy.

[0016] Optionally, the valve body clamping mechanism is rotatably mounted on the lifting plate; The valve body clamping mechanism includes a rotating platform rotatably mounted on the lifting plate, a fourth threaded rod mounted on the rotating platform, a second motor mounted on the rotating platform for driving the fourth threaded rod to rotate, a drive disc threadedly connected to the fourth threaded rod, a valve body clamping plate slidably mounted on the rotating platform for clamping and fixing the valve body, and a drive rod connected between the drive disc and the valve body clamping plate.

[0017] By adopting the above technical solution, the second motor drives the fourth threaded rod to rotate. When the fourth threaded rod rotates, it drives the drive disc connected to it to move. When the drive disc moves, it drives the drive rod to rotate. When the drive rod rotates, it drives the valve body clamping plate to move and move closer to the valve body, thereby realizing the automatic centering and clamping of the valve body. In addition, the rotating table is mounted on the lifting plate and can rotate synchronously with the rotating adsorption mechanism, which facilitates circumferential welding.

[0018] Optionally, the sealing half-frames are in two sets and symmetrically arranged on the worktable. Each of the two sealing half-frames is provided with a semi-annular sealing hole. The two semi-annular sealing holes are combined to form a complete sealing hole and match the size of the rotating table to form a complete sealing chamber when the valve body and valve seat are sealed. The welding mechanism consists of two sets installed on the corresponding sealing half-frames. Each welding mechanism includes a fixed frame installed on the sealing half-frame and a welding gun installed on the fixed frame. The welding gun passes through the sealing half-frame to weld the valve body and valve seat joint under sealed conditions.

[0019] By adopting the above technical solution, the two sets of symmetrically arranged sealing half-frames, when closed, form a complete sealing hole that matches the size of the rotating table, thereby forming a complete sealed welding chamber and effectively preventing welding debris from splashing. Simultaneously, the welding gun passes through the sealing half-frames, allowing welding to be performed at the valve body and valve seat joint under sealed conditions, thus ensuring welding quality and the safety of the welding environment.

[0020] Optionally, the workbench is provided with a valve seat hole, which communicates with the air supply chamber, and the valve seat clamping mechanism is installed in the valve seat hole for sealing. The valve seat clamping mechanism includes a drive platform rotatably mounted on the support frame, a rotating shaft mounted in the drive platform, a third motor mounted in the drive platform for driving the rotating shaft to rotate, a rotating disk mounted on the rotating shaft, a valve seat clamping plate slidably mounted on the drive platform for clamping the valve seat, a first connecting rod hinged to the rotating disk, and a second connecting rod connecting the first connecting rod and the valve seat clamping plate.

[0021] By adopting the above technical solution, the third motor drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the rotating disk to rotate. When the rotating disk rotates, it drives the valve seat clamping plate to move towards the valve seat through the first and second connecting rods, thereby realizing the automatic centering and clamping of the valve seat. The drive table is rotated and installed on the support frame, and can rotate synchronously with the rotating adsorption mechanism, thus facilitating circumferential welding.

[0022] Secondly, this application provides a control method for a precision manufacturing equipment for a one-way valve, employing the following technical solution: A control method for a precision manufacturing equipment for a one-way valve, applied to such a precision manufacturing equipment, includes: After welding is completed, a detection gas at a preset pressure is introduced into the one-way valve, and the drop hole is sealed by a preset sealing component. The control of the rotating adsorption mechanism drives the one-way valve to rotate at a preset speed for one revolution, so that the welded part of the one-way valve passes through the air pressure sensor pre-placed on the inner wall of the sealed chamber. During the rotation of the one-way valve, the real-time air pressure value collected by the air pressure sensor is acquired in real time, and the real-time rotation angle of the rotating adsorption mechanism is acquired simultaneously. The real-time air pressure value is compared with the preset reference air pressure value. When the real-time air pressure value is not greater than the preset reference air pressure value, the one-way valve is defined as completely sealed. The docking mechanism is controlled to drive the welded one-way valve to move axially, so that the welded area is polished by the polishing ring. When the real-time air pressure value is greater than the preset reference air pressure value, the one-way valve is defined as having a leak. The real-time rotation angle corresponding to when the real-time air pressure value starts to exceed the preset reference air pressure value is taken as the leak start angle, and the real-time rotation angle corresponding to when the real-time air pressure value drops back to no greater than the preset reference air pressure value is taken as the leak end angle. The leakage location range is obtained based on the leakage start angle and leakage end angle, and a leakage signal is generated; In response to a leak signal, the rotary adsorption mechanism is controlled to rotate the one-way valve, so that the welding gun welds the leak area. After the repair welding is completed, the detection gas is introduced into the sealed chamber again to check the sealing performance.

[0023] By adopting the above technical solution, after welding, detection gas is introduced into the one-way valve and the drop hole is sealed. The rotating adsorption mechanism is controlled to drive the one-way valve to rotate at a constant speed. The pressure sensor monitors the pressure change in the sealed chamber in real time. When an abnormal increase in pressure is detected, the leak start and end angles are automatically located, the leak location range is generated, and the welding gun is controlled to repair the leak area, thereby ensuring the processing quality of the one-way valve.

[0024] Optionally, specific methods for rotating the check valve include: Obtain the fixed welding azimuth angle of the welding gun in the sealed cavity, and take the leakage end angle as the near end and the leakage start angle as the far end; When the leakage initiation angle is greater than 180°, control the rotating adsorption mechanism to rotate from the far end to the near end; When the leakage initiation angle is less than 180°, control the rotating adsorption mechanism to rotate from the near end to the far end; When the leakage initiation angle is equal to 180°, either one can be selected for reversal operation; The angular difference between the leakage initiation angle and the fixed welding azimuth angle is calculated as the welding start rotation angle; The angle difference between the leakage termination angle and the fixed welding azimuth angle is calculated as the welding termination rotation angle; The rotation direction of the check valve is determined based on the magnitude of the leakage initiation angle; The rotating adsorption mechanism is controlled to drive the one-way valve to rotate in the same direction to start the welding rotation angle, so that the leakage start angle coincides with the fixed welding azimuth angle, and the welding gun is started to start welding. Then, the rotating adsorption mechanism is controlled to drive the one-way valve to continue rotating in the same direction until the welding end angle is rotated so that the leakage end angle coincides with the fixed welding azimuth angle, and then the welding stops.

[0025] By adopting the above technical solution, the fixed welding azimuth angle of the welding gun is obtained, and the optimal rotation direction is determined based on the size of the leakage initiation angle. This allows the check valve to align the leakage area with the welding gun along the shortest path. At the same time, the angle difference between the leakage initiation and termination angles and the welding azimuth angle is calculated and used as the welding start and end rotation angles, respectively. The check valve is then controlled to complete the alignment, welding, and stopping actions in a determined direction, thereby significantly improving the efficiency of repair welding.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The first threaded rod is driven to rotate by the first motor. When the first threaded rod rotates, it drives the valve body and valve seat to rotate synchronously to achieve uniform circumferential welding. On the other hand, it drives the adsorption component to work, thereby generating negative pressure, which in turn adsorbs and collects the welding slag and debris generated during the welding process in real time, effectively preventing the welding slag and debris from splashing and adhering to the valve body surface, thereby greatly improving the product appearance quality. 2. By opening a drop hole on the top of the workbench and connecting the drop hole to the air supply chamber, the collection box and the air outlet pipe, and the diameter of the drop hole is larger than the diameter of the air vent hole of the collection box, when the rotating fan ring rotates and forms a downward suction airflow, the welding slag and debris will fall into the collection box through the drop hole and be intercepted by the air vent hole, while the airflow is discharged through the air outlet pipe, thereby achieving the centralized collection of welding slag and debris. 3. A dual-axis motor drives the third threaded rod to rotate, causing the sliding plates to move in opposite directions, thereby achieving precise closure of the sealing half-frame and forming a complete sealed chamber, effectively preventing weld slag and debris from splashing outwards. Simultaneously, a grinding half-ring is integrated on the sealing half-frame, forming a complete grinding ring when the sealing half-frame is closed. This allows for grinding of the weld area after welding, improving the surface quality of the weld. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a precision manufacturing equipment for a one-way valve. Figure 2 This is a cross-sectional view of a precision manufacturing equipment for a one-way valve. Figure 3 This is a cross-sectional view of the valve seat clamping mechanism; Figure 4 This is a sectional view of the valve body clamping mechanism and the docking mechanism; Figure 5 This is a cross-sectional view of the sealing and welding mechanisms; Figure 6 This is a cross-sectional view of the rotating adsorption mechanism.

[0028] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Workbench; 11. Connecting frame; 12. Valve seat hole; 13. Support frame; 14. Air supply chamber; 15. Drive chamber; 16. Circular groove; 17. Arc-shaped rotating plate; 18. Drop hole; 19. Air outlet pipe; 2. Valve seat clamping mechanism; 21. Drive platform; 211. Drive mounting chamber; 22. Rotating shaft; 23. Third motor; 24. Rotary disk; 25. Valve seat clamping plate; 26. First connecting rod; 27. Second connecting rod; 28. Drive hole; 29. ​​First bellows cover; 3. Docking mechanism; 31. Lifting plate; 32. Hydraulic cylinder; 33. Limiting telescopic column; 34. Rotating groove; 35. Rotating plate; 4. Valve body clamping mechanism; 41. Rotating platform; 411. Rotating mounting chamber; 42. Fourth 43. Threaded rod; 44. Second motor; 45. Drive disc; 46. Valve body clamping plate; 47. Drive rod; 48. Moving hole; 49. Second bellows cover; 50. Guide plate; 51. Sealing mechanism; 51. Sealing half frame; 52. Semi-ring sealing hole; 53. Sliding plate; 54. Third threaded rod; 55. Dual-axis motor; 56. Grinding half ring; 57. Sliding hole; 58. Connecting plate; 59. Fixed seat; 60. Support block; 61. Welding mechanism; 62. Fixed frame; 73. Welding gun; 74. Rotary adsorption mechanism; 751. First threaded rod; 76. First motor; 77. Collection box; 78. Vent hole; 79. Adsorption assembly; 701. Second threaded rod; 702. Drive plate; 703. Rotating fan ring; 704. Lifting hole; 705. Third bellows cover. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] This application discloses a precision manufacturing equipment for one-way valves.

[0031] Reference Figure 1 as well as Figure 2 A precision manufacturing equipment for one-way valves includes a worktable 1, a valve body clamping mechanism 4, a valve seat clamping mechanism 2, a docking mechanism 3, a welding mechanism 6, a sealing mechanism 5, and a rotary adsorption mechanism 7.

[0032] A connecting frame 11 is fixedly installed on the top of the workbench 1. A docking mechanism 3 is mounted on the connecting frame 11 and is used to drive the valve body and valve seat to dock. A valve body clamping mechanism 4 is lifted and installed on the workbench 1 and is used to clamp and fix the valve body to be processed. A valve seat clamping mechanism 2 is installed on the workbench 1 and is used to clamp and fix the valve seat to be processed. A sealing mechanism 5 is slidably installed on the workbench 1 and is used to seal the valve body and valve seat during welding. A welding mechanism 6 is installed on the sealing mechanism 5 and is used to weld the valve body and valve seat at the docking point. A rotary adsorption mechanism 7 is installed on the workbench 1 and is used to drive the valve body and valve seat to rotate synchronously and adsorb welding slag and debris while rotating.

[0033] During operation, the valve body is first placed into the valve body clamping mechanism 4 and clamped, and the valve seat is placed into the valve seat clamping mechanism 2 and clamped. Next, the docking mechanism 3, mounted on the connecting frame 11, drives the valve body clamping mechanism 4 to descend, ensuring precise docking between the valve body interface and the valve seat interface. Subsequently, the sealing mechanism 5 slides along the worktable 1 to the welding station, covering the docking area of ​​the valve body and valve seat to form a sealed cavity, and introducing protective gas to isolate air. The welding mechanism 6, integrated on the sealing mechanism 5, then welds the circumferential seam. Simultaneously, the rotating adsorption mechanism 7, mounted on the worktable 1, drives the valve body and valve seat to rotate synchronously and uniformly, ensuring a continuous and uniform circumferential weld. During rotation, negative pressure adsorbs welding slag and debris, preventing splashed welding slag from adhering to the valve body surface and reducing the product's appearance quality.

[0034] Reference Figure 2 as well as Figure 3 The workbench 1 has a valve seat hole 12 for mounting the valve seat clamping mechanism 2, which is installed in the valve seat hole 12. The valve seat clamping mechanism 2 includes a drive table 21, a rotating shaft 22, a third motor 23, a rotating disk 24, a valve seat clamping plate 25, a first connecting rod 26, and a second connecting rod 27.

[0035] A drive platform 21 is rotatably mounted within the valve seat hole 12, and the drive platform 21 has a drive mounting chamber 211. A third motor 23 is fixedly mounted on the bottom wall of the drive mounting chamber 211, and the output end of the third motor 23 is fixedly connected to the end of the rotating shaft 22 via a coupling. A rotating disk 24 is fixedly mounted on the other end of the rotating shaft 22. A first connecting rod 26 is hinged to the side of the rotating disk 24 away from the rotating shaft 22, and a second connecting rod 27 is hinged to the end of the first connecting rod 26 away from the rotating disk 24. A valve seat clamping plate 25 is fixedly mounted on the second connecting rod 27. A drive hole 28 is provided on the top of the drive platform 21, and the valve seat clamping plate 25 is slidably mounted within the drive hole 28. A first bellows cover 29 is installed between the valve seat clamping plate 25 and the drive hole 28 to seal the drive hole 28 when the valve seat clamping plate 25 moves to clamp the valve seat.

[0036] During operation, the valve seat to be processed is placed on the drive table 21. Then, the third motor 23 is started to drive the rotating shaft 22 to rotate. The rotating shaft 22 rotates at the same time, and the rotating disk 24 rotates. When the rotating disk 24 rotates, it drives the first connecting rod 26 to rotate. When the first connecting rod 26 rotates, it drives the second connecting rod 27 and the valve seat clamping plate 25 to slide along the drive hole 28, so that the valve seat clamping plate 25 moves towards the valve seat and clamps and fixes the valve seat. When the valve seat clamping plate 25 moves, it will drive the first bellows cover 29 to extend and retract, so that the first bellows cover 29 performs a follow-up seal on the drive hole 28, thereby preventing welding slag and debris from entering the drive mounting chamber 211.

[0037] Reference Figure 4 The docking mechanism 3 includes a lifting plate 31, a hydraulic cylinder 32, and a limiting telescopic column 33.

[0038] One end of the limiting telescopic column 33 is fixedly installed on the connecting frame 11, and the other end of the limiting telescopic column 33 is fixedly installed on the lifting plate 31. The hydraulic cylinder 32 is fixedly installed on the connecting frame 11, and the output end of the hydraulic cylinder 32 is fixedly connected to one end of the lifting plate 31. A rotating groove 34 is provided on the side of the lifting plate 31 away from the hydraulic cylinder 32, and a rotating plate 35 is rotatably installed in the rotating groove 34.

[0039] Reference Figure 4 The valve body clamping mechanism 4 is mounted on the rotating plate 35. The valve body clamping mechanism 4 includes a rotating table 41, a fourth threaded rod 42, a second motor 43, a drive disc 44, a valve body clamping plate 45, and a drive rod 46.

[0040] A rotating platform 41 is fixedly mounted on a rotating plate 35, and the interior of the rotating platform 41 has a rotating mounting chamber 411. A fourth threaded rod 42 is rotatably mounted in the rotating mounting chamber 411, and the end of the fourth threaded rod 42 passes through the rotating platform 41. A second motor 43 is fixedly mounted on the side of the rotating platform 41 near the lifting plate 31, and the output end of the second motor 43 is fixedly connected to the fourth threaded rod 42 via a coupling. A drive disc 44 is threadedly connected to the fourth threaded rod 42, one end of a drive rod 46 is hinged to the drive disc 44, and the other end of the drive rod 46 is hinged to the valve body clamping plate 45. A moving hole 47 is provided on the rotating platform 41, and the valve body clamping plate 45 is slidably mounted in the moving hole 47. A second bellows cover 48 is installed between the valve body clamping plate 45 and the moving hole 47 to seal the moving hole 47 when the valve body clamping plate 45 moves to clamp the valve body. A guide plate 49 is fixedly installed inside the rotating mounting chamber 411, and the drive disk 44 is slidably sleeved on the guide plate 49 to limit and guide the movement of the drive disk 44.

[0041] During operation, the valve body to be processed is first placed under the rotating table 41. Then, the second motor 43 is started to drive the fourth threaded rod 42 to rotate. When the fourth threaded rod 42 rotates, it drives the drive disc 44, which is threaded to it, to move upward along the guide plate 49, thereby driving the drive rod 46 to rotate. When the drive rod 46 rotates, it drives the valve body clamping plate 45 to move along the moving hole 47 towards the valve body and clamps and fixes the valve body. When the valve body clamping plate 45 moves, it drives the second bellows cover 48 to extend and retract, so that the second bellows cover 48 performs a follow-up seal on the moving hole 47, thereby preventing welding slag and debris from entering the rotating installation chamber 411.

[0042] After the valve body is clamped, the hydraulic cylinder 32 is activated to drive the lifting plate 31 to descend vertically along the limit telescopic column 33, which in turn drives the rotating plate 35 and the valve body clamping mechanism 4 installed on the rotating plate 35 to move down as a whole, further driving the clamped valve body to move down and dock with the valve seat fixed below.

[0043] Reference Figure 2 as well as Figure 5 The sealing mechanism 5 includes a sealing half-frame 51, a sliding plate 52, a third threaded rod 53, a dual-axis motor 54, and a grinding half-ring 55. In this embodiment, the sealing half-frame 51, the sliding plate 52, the third threaded rod 53, and the grinding half-ring 55 are all in two sets and symmetrically arranged on the worktable 1.

[0044] A sliding hole 56 is provided on the connecting frame 11, and a sliding plate 52 is slidably installed in the sliding hole 56 and fixedly installed on the sealing half-frame 51. One of the sealing half-frames 51 has an insertion groove, and the other sealing half-frame 51 has an insertion rod that matches the insertion groove. Both sealing half-frames 51 have semi-annular sealing holes 511, which are combined to form a complete sealing hole that matches the size of the rotating table 41 to form a complete sealing chamber when the valve body and valve seat are sealed. A connecting plate 57 is fixedly installed on both sealing half-frames 51, and the other end of the two connecting plates 57 is fixedly installed on the corresponding grinding half-ring 55. The two grinding half-rings 55 are combined to form a complete grinding ring for grinding the weld after the valve body and valve seat are welded. A fixed seat 58 is fixedly installed on the side of the connecting frame 11 away from the hydraulic cylinder 32, and the dual-axis motor 54 is fixedly installed on the fixed seat 58. Two support blocks 59 are fixedly installed on the side of the connecting frame 11 away from the hydraulic cylinder 32, and two third threaded rods 53 are rotatably mounted on the corresponding support blocks 59. The two output ends of the dual-axis motor 54 are fixedly connected to the two third threaded rods 53 via couplings.

[0045] During operation, after the valve body and valve seat are docked, the dual-axis motor 54 is started to drive the two third threaded rods 53 to rotate. When the third threaded rods 53 rotate, they drive the sliding plate 52 connected to them to slide along the sliding hole 56. At the same time, the two sliding plates move and drive the two sealing half-frames 51 to move towards each other, so that the two sealing half-frames 51 merge to form a complete sealing frame. During the merging, the plug rod on one sealing half-frame 51 is inserted into the plug groove of the other sealing half-frame 51, thereby achieving precise alignment and locking of the two sealing half-frames 51. At this time, the semi-annular sealing holes 511 on the two sealing half-frames 51 merge to form a complete sealing hole. At the same time, the sealing hole matches the size of the rotating table 41, thereby covering the docking area of ​​the valve body and valve seat, thus forming a complete sealing chamber, and preventing welding slag and debris from splashing and causing contamination. At the same time, as the two sets of sealing half-frames 51 complete the sealing and enclosure, the connecting plate 57 fixed at the bottom moves synchronously with the sealing half-frames 51, driving the two sets of grinding half-rings 55 to close in opposite directions. The two sets of grinding half-rings 55 are spliced ​​together to form a complete annular grinding ring, which prepares for the grinding of weld scars after welding.

[0046] Reference Figure 2 as well as Figure 5 The welding mechanism 6 consists of two symmetrically arranged sets on the worktable 1, and the two sets of welding mechanisms 6 are fixedly mounted on the corresponding sealing half-frame 51. The welding mechanism 6 includes a fixing frame 61 and a welding gun 62.

[0047] The fixing bracket 61 is fixedly installed on the sealing half frame 51, and the welding gun 62 is fixedly installed on the fixing bracket 61. The welding gun 62 passes through the sealing half frame 51 so as to weld the valve body and valve seat joint under sealed conditions.

[0048] Reference Figure 6 The rotary adsorption mechanism 7 includes a first threaded rod 71, a first motor 72, a collection box 73, and an adsorption assembly 75. The adsorption assembly 75 includes a second threaded rod 751, a drive plate 752, and a rotating fan ring 753.

[0049] The workbench 1 has an internal cavity, inside which a support frame 13 is installed, dividing the cavity into an air supply chamber 14 and a drive chamber 15. A first threaded rod 71 is rotatably mounted on the support frame 13 and fixedly connected to the drive platform 21. The support frame 13 has an annular groove 16, within which an arc-shaped rotating plate 17 is rotatably mounted, and the arc-shaped rotating plate 17 is fixedly mounted on the drive platform 21. A first motor 72 is fixedly mounted on the bottom wall of the drive chamber 15, and the output end of the first motor 72 is fixedly connected to the first threaded rod 71 via a coupling. A second threaded rod 751 is rotatably mounted inside the air supply chamber 14, and a drive plate 752 is threadedly connected to the first threaded rod 71 and also threadedly connected to the second threaded rod 751. A lifting hole 754 is provided on the support frame 13. The drive plate 752 is slidably installed in the lifting hole 754. A third bellows cover 755 is installed between the drive plate 752 and the lifting hole 754 to seal the lifting hole 754 when the drive plate 752 moves. The rotating fan ring 753 is fixedly installed on the second threaded rod 751. The collection box 73 is slidably installed in the air supply chamber 14 to facilitate the removal of the collection box 73 for cleaning of welding slag and debris inside. A vent hole 74 is provided inside the collection box 73, and the rotating fan ring 753 is located directly below the vent hole 74.

[0050] Reference Figure 6 The top of the workbench 1 is provided with a drop hole 18, which is connected to the air supply chamber 14. The air outlet of the air supply chamber 14 is connected to an air outlet pipe 19. The diameter of the drop hole 18 is larger than that of the vent hole 74 so that welding slag and debris can fall through the drop hole 18 into the collection box 73 and be blocked by the vent hole 74. When the rotating fan ring 753 rotates, the air generated forms a downward suction force through the air supply chamber 14, the vent hole 74, the drop hole 18, and the air outlet pipe 19 to attract the welding slag and debris into the collection box 73 for collection.

[0051] During operation, after the valve seat and valve body are sealed by the sealing half frame 51, the first motor 72 is started to drive the first threaded rod 71 to rotate. When the first threaded rod 71 rotates, it drives the drive table 21 to rotate. At the same time, the arc-shaped rotating plate 17 at the bottom of the drive table 21 rotates smoothly along the annular groove 16 of the support frame 13, thereby driving the valve body and valve seat to rotate at a uniform speed. At the same time as the rotation, the welding gun 62 is started to weld the joint between the valve body and valve seat, thereby achieving uniform circumferential welding. On the other hand, the drive plate 752, which is threadedly connected to it, moves along the lifting hole 754. Simultaneously, the third bellows cover 755 extends and retracts, sealing the lifting hole 754 and preventing air leakage from the air supply chamber 14. At the same time, the drive plate 752 rotates the second threaded rod 751, which is threadedly connected to it. The rotation of the second threaded rod 751 simultaneously rotates the rotating fan ring 753. The rotating fan ring 753 generates negative pressure suction, which is applied to the drop hole 18, the vent hole 74 of the collection box 73, and the air supply chamber 14. A stable downward suction airflow is formed between the air pipes 19, thereby generating a downward suction force at the drop hole 18, which draws the welding slag and debris generated during the welding process downward. Under the action of negative pressure airflow, the debris falls through the drop hole 18 at the top of the workbench 1 into the collection box 73 in the air supply chamber 14. Since the diameter of the drop hole 18 is larger than the diameter of the vent hole 74 in the collection box 73, the welding slag and debris are intercepted by the vent hole 74 and retained inside the collection box 73. Only the airflow is discharged through the vent hole 74 and the air outlet pipe 19, realizing the real-time centralized collection of welding slag and debris, and effectively preventing welding slag and debris from adhering to the valve body surface.

[0052] After welding is completed, the third motor 23 reverses its rotation, causing the valve seat clamping plates 25 to slide outwards and release, thus releasing the clamping and fixing of the bottom of the welded check valve. Only the valve body clamping mechanism 4 retains the stable clamping state of the check valve. Then, the docking mechanism 3 starts the reset and lifting process. The hydraulic cylinder 32 drives the lifting plate 31 to move vertically upwards, and the valve body clamping mechanism 4 drives the welded check valve to be pulled upwards at a uniform speed. During the lifting process, the annular weld of the check valve passes through the grinding ring formed by the sealing mechanism 5. Relying on the relative friction between the upward movement of the workpiece and the grinding ring, the protruding residue on the outer periphery of the weld is uniformly ground and repaired. The debris generated by grinding will fall into the collection box 73 for collection under the action of negative pressure airflow.

[0053] Based on the same inventive concept, embodiments of the present invention provide a control method for a precision manufacturing equipment for a one-way valve.

[0054] A control method for a precision manufacturing equipment for one-way valves includes the following steps: Step S100: After welding is completed, a detection gas at a preset pressure is introduced into the one-way valve, and the drop hole 18 is sealed by a preset sealing component.

[0055] The preset pressure test gas refers to a test gas with a stable pressure value set according to the one-way valve sealing test process requirements. It is usually dry compressed air or inert gas, and the pressure value can be obtained by setting the pressure resistance parameter in advance according to the one-way valve of different specifications. The test gas is obtained through a preset gas delivery mechanism, which refers to the gas supply unit used to provide gas during the test process. The gas delivery mechanism is a gas pump, which is installed in the drive mounting chamber 211, and the gas delivery pipe passes through the drive platform 21 and is inserted into the valve seat channel to facilitate gas supply.

[0056] The pre-set sealing assembly refers to the sealing actuator used to temporarily seal the drop hole 18 of the one-way valve during the testing process. The sealing assembly consists of an electric push rod and a sealing plate. The electric push rod is fixedly installed on the inner wall of the air supply chamber 14, and its output end is fixedly connected to the sealing plate. The sealing plate is slidably installed inside the air supply chamber 14. When air is supplied to the one-way valve, the electric push rod is activated to move the sealing plate, thereby causing the sealing plate to slide and fit against the drop hole 18, sealing the drop hole 18 and isolating the inner cavity of the one-way valve from the outside world to form a stable high-pressure testing environment.

[0057] Step S101: Control the rotating adsorption mechanism 7 to drive the one-way valve to rotate at a preset speed for one revolution, so that the welded part of the one-way valve passes through the air pressure sensor pre-placed on the inner wall of the sealed chamber.

[0058] The preset rotation speed refers to a standard rotation speed calibrated through multiple sealing tests, balancing pressure acquisition accuracy and detection efficiency. This speed can be determined through multiple comparative experiments with and without leakage. The sealed chamber refers to a closed space formed by two sets of sealing half-frames 51, covering the area where the valve body and valve seat meet. The pressure sensor pre-installed on the inner wall of the sealed chamber refers to a sensor that has been pre-installed on the inner wall of the sealed chamber and has undergone airtightness testing; this can be achieved through pre-installation by the operator. After the detection gas is introduced and sealed, the rotating adsorption mechanism 7 drives the one-way valve to rotate uniformly one revolution at the preset speed, allowing the entire circumferential weld of the one-way valve to pass sequentially through the sensing area of ​​the pressure sensor, thus achieving full coverage airtight acquisition of the entire weld.

[0059] Step S102: During the rotation of the one-way valve, the real-time air pressure value collected by the air pressure sensor is acquired in real time, and the real-time rotation angle of the rotating adsorption mechanism 7 is acquired simultaneously.

[0060] The real-time air pressure value refers to the instantaneous air pressure value in the sealed chamber continuously collected and output by the air pressure sensor at a fixed frequency during one full rotation of the one-way valve. This value can be obtained from the air pressure sensor. The real-time rotation angle refers to the current rotation angle position of the one-way valve as fed back by the encoder of the first motor 72 in the rotating adsorption mechanism 7 at the same moment. During the uniform rotation detection of the one-way valve, the system simultaneously collects two types of data: continuously reading the real-time air pressure value output by the air pressure sensor, and simultaneously retrieving the real-time rotation angle fed back by the encoder of the first motor 72. A database is established by combining the air pressure data and angle data at the same time point, and the corresponding real-time rotation angle is obtained by substituting the real-time air pressure value into the database.

[0061] Step S103: Compare the real-time air pressure value with the preset reference air pressure value. When the real-time air pressure value is not greater than the preset reference air pressure value, the one-way valve is defined as completely sealed. Control the docking mechanism 3 to drive the welded one-way valve to move axially, so that the welded area is polished by the polishing ring.

[0062] The preset reference air pressure value refers to the upper limit of the background fluctuation of the air pressure in the sealed chamber under the standard working condition of a completely sealed check valve weld, under the same test pressure and speed conditions. It is obtained by taking the maximum value after multiple tests on a well-sealed check valve. When all real-time air pressure values ​​collected during the test are not greater than the preset reference air pressure value, it indicates that no leakage has occurred in the check valve weld, and the system defines the check valve as completely sealed. The grinding ring refers to the annular grinding tool formed by splicing the grinding half-rings 55, which are respectively fixed to the bottom of the two sealing half-frames 51, together with the sealing half-frames 51. Its inner diameter matches the outer diameter of the weld. After determining that the seal is completely sealed, the hydraulic cylinder 32 is controlled to drive the lifting plate 31 and the entire check valve to move axially, so that the welding area rubs against the grinding ring during the movement, completing the uniform grinding and finishing of the outer surface of the weld.

[0063] Step S104: When the real-time air pressure value is greater than the preset reference air pressure value, the one-way valve is defined as having a leak. The real-time rotation angle corresponding to when the real-time air pressure value starts to be greater than the preset reference air pressure value is taken as the leak start angle, and the real-time rotation angle corresponding to when the real-time air pressure value drops back to no greater than the preset reference air pressure value is taken as the leak end angle.

[0064] If the real-time air pressure value is greater than the preset reference air pressure value during the rotation scanning process, it indicates that there is a penetrating leakage defect at the weld position corresponding to that angle. The detection gas in the one-way valve cavity escapes to the sealed chamber through this point, causing the air pressure in the cavity to rise.

[0065] The leakage initiation angle refers to the rotation angle of the one-way valve when the real-time air pressure curve first exceeds the reference value from a value not higher than the reference value, representing the starting point of the weld leakage area in the circumferential direction. The leakage termination angle refers to the rotation angle when the real-time air pressure curve drops back to or below the reference air pressure value, representing the ending point of the leakage area in the circumferential direction.

[0066] Step S105: Obtain the leakage azimuth range based on the leakage start angle and leakage end angle, and generate a leakage signal.

[0067] The leakage location range is the circumferential welded area of ​​the check valve defined by the leakage start angle and leakage end angle; this range represents the area where the weld leakage defect is located. The leakage signal is an electronically controlled signal automatically generated by the system when it determines that a leakage defect exists in the check valve weld. Once the leakage area is located, a leakage signal is automatically generated, triggering the subsequent repair welding procedure.

[0068] Step S106: In response to the leakage signal, control the rotating adsorption mechanism 7 to drive the one-way valve to rotate, so that the welding gun 62 welds the leakage area, and after the repair welding is completed, test gas is introduced into the sealed chamber again to test the sealing performance.

[0069] Upon receiving a leak signal, the system reads the leak location range data and controls the first motor 72 to drive the one-way valve to rotate, causing the leak location range to sequentially pass through the effective range of the welding gun 62. The welding gun 62 then activates and performs repair welding on the leak area, repairing the weld defect. After the repair welding is completed, steps S100 to S102 are executed again, introducing detection gas at a preset pressure into the one-way valve and performing a rotational scan to verify whether the leak defect has been eliminated. If it still fails to meet the requirements, the repair welding is performed again or an alarm is issued.

[0070] The specific methods for rotating a one-way valve include: Step S200: Obtain the fixed welding azimuth angle of the welding gun 62 in the sealed cavity, and take the leakage end angle as the near end and the leakage start angle as the far end.

[0071] The fixed welding azimuth angle refers to the fixed installation angle of the welding gun 62 in the circumferential direction of the sealed chamber. This angle is a basic parameter of the equipment and is calibrated and entered into the system by the operator when assembling the welding gun 62. The near end is defined as the end of the leakage range closest to the reference angle of the welding gun 62, corresponding to the leakage end angle; the far end is defined as the end of the leakage range far from the reference angle of the welding gun 62, corresponding to the leakage initiation angle.

[0072] Step S201: When the leakage initiation angle is greater than 180°, control the rotating adsorption mechanism 7 to rotate from the far end to the near end.

[0073] Using the 360° complete circumference as the judgment benchmark, if the leakage initiation angle value corresponding to the far end is greater than 180°, it is determined that the leakage range is closer to the welding gun 62 reference angle in the clockwise direction. The system controls the rotating adsorption mechanism 7 to clamp the one-way valve and rotate it unidirectionally from the far end to the near end, shortening the alignment rotation stroke.

[0074] Step S202: When the leakage initiation angle is less than 180°, control the rotating adsorption mechanism 7 to rotate from the near end to the far end.

[0075] If the leak initiation angle value at the far end is less than 180°, it is determined that the leak section is closer to the reference angle of the welding gun 62 in the counterclockwise direction. The system controls the rotating adsorption mechanism 7 to clamp the one-way valve and rotate it unidirectionally from the near end to the far end to complete the alignment of the leak section with the shortest rotation path.

[0076] Step S203: When the leakage initiation angle is equal to 180°, choose one of them to perform the turning operation.

[0077] If the leak initiation angle at the far end is exactly 180°, and the distance between the two ends of the leak interval and the reference angle of the welding gun is consistent, there is no optimal direction. The system randomly selects one of the two directions, either from the far end to the near end or from the near end to the far end, to control the operation of the rotating adsorption mechanism 7.

[0078] Step S204: Calculate the angle difference between the leakage initiation angle and the fixed welding azimuth angle as the welding start rotation angle.

[0079] The welding start rotation angle refers to the angle value required to align the leakage start angle with the fixed welding azimuth angle. It is obtained by subtracting the fixed welding azimuth angle from the leakage start angle, taking the absolute value, and then correcting for the rotation direction. This value serves as the initial target angle for driving the one-way valve to rotate.

[0080] Step S205: Calculate the angle difference between the leakage end angle and the fixed welding azimuth angle as the welding end rotation angle.

[0081] The welding end rotation angle refers to the angle value required to align the leakage end angle with the fixed welding azimuth angle. It is obtained by subtracting the fixed welding azimuth angle from the leakage end angle, taking the absolute value, and then correcting it by the rotation direction. This value is used to determine the welding stop time.

[0082] Step S206: Determine the rotation direction of the check valve based on the magnitude of the leakage initiation angle.

[0083] Based on the judgment logic of steps S201 to S203, the specific direction of rotation for the check valve repair welding is determined by comprehensively considering the relative relationship between the leakage initiation angle and the fixed welding azimuth angle, ensuring that the repair welding positioning and welding are completed with the minimum angle stroke. The rotation direction refers to the direction in which the check valve rotates.

[0084] Step S207: Control the rotary adsorption mechanism 7 to drive the one-way valve to rotate in the direction of rotation to start the welding rotation angle, so that the leakage start angle coincides with the fixed welding azimuth angle, and start the welding gun 62 to start welding. Then control the rotary adsorption mechanism 7 to drive the one-way valve to continue rotating in the same direction of rotation until the welding end angle is rotated so that the leakage end angle coincides with the fixed welding azimuth angle, and then stop welding.

[0085] The system controls the first motor 72 to drive the one-way valve to rotate in a predetermined direction. When the real-time rotation angle reaches the welding start angle, the leakage initiation angle is exactly aligned with the fixed welding azimuth angle, immediately triggering the welding gun 62 to start arc welding. Subsequently, the one-way valve rotates at a constant speed in the same direction, and welding continues. When the cumulative rotation angle increment reaches the welding end angle, the leakage end angle coincides with the fixed welding azimuth angle, controlling the welding gun 62 to stop arc welding, completing the repair welding of the entire leakage azimuth section.

[0086] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A precision manufacturing equipment for a one-way valve, comprising a worktable (1), a valve body clamping mechanism (4) for clamping the valve body, a valve seat clamping mechanism (2) for clamping the valve seat, a docking mechanism (3) for driving the valve body and valve seat to dock, a welding mechanism (6) for welding the docking point of the valve body and valve seat, and a sealing mechanism (5) for sealing the valve body and valve seat during welding, characterized in that, It also includes a rotary adsorption mechanism (7) installed on the workbench (1) to drive the valve body and valve seat to rotate synchronously and adsorb welding slag debris while rotating. The rotary adsorption mechanism (7) includes a first threaded rod (71) rotatably mounted on the workbench (1) and connected to the valve seat clamping mechanism (2), a first motor (72) mounted on the workbench (1) and used to drive the first threaded rod (71) to rotate, an adsorption assembly (75) mounted on the first threaded rod (71) and used to adsorb welding slag debris when the first threaded rod (71) rotates, and a collection box (73) mounted on the workbench (1) and used to collect the welding slag debris absorbed by the adsorption assembly (75).

2. The precision manufacturing equipment for a one-way valve according to claim 1, characterized in that, The workbench (1) has an internal cavity, and a support frame (13) is installed inside the cavity. The support frame (13) divides the cavity into an air supply cavity (14) and a drive cavity (15). The adsorption assembly (75) is installed in the air supply cavity (14), and the first threaded rod (71) and the first motor (72) are installed in the drive cavity (15). The adsorption assembly (75) includes a second threaded rod (751) installed inside the air delivery chamber (14), a drive plate (752) threaded to the first threaded rod (71) and driving the second threaded rod (751) to rotate synchronously when the first threaded rod (71) rotates, and a rotating fan ring (753) installed on the second threaded rod (751) and generating wind when the second threaded rod (751) rotates.

3. The precision manufacturing equipment for a one-way valve according to claim 2, characterized in that, The top of the workbench (1) is provided with a drop hole (18), which is connected to the air supply chamber (14). The air outlet of the air supply chamber (14) is connected to an air outlet pipe (19). The collection box (73) is located in the air supply chamber (14), and the inside of the collection box (73) is provided with a vent hole (74). The rotating fan ring (753) is located directly below the vent hole (74). The diameter of the drop hole (18) is larger than that of the vent hole (74) so ​​that welding slag debris can fall through the drop hole (18) into the collection box (73) and be blocked by the vent hole (74). When the rotating fan ring (753) rotates, the adsorption airflow generated enters through the drop hole (18), passes through the vent hole (74) and the air supply chamber (14), and is discharged through the air outlet pipe (19) to form a downward adsorption force at the drop hole (18) to adsorb the welding slag debris into the collection box (73) for collection.

4. The precision manufacturing equipment for a one-way valve according to claim 3, characterized in that, A connecting frame (11) is installed on the workbench (1), and the sealing mechanism (5) is installed on the connecting frame (11); The sealing mechanism (5) includes a sealing half-frame (51) slidably mounted on the worktable (1), a sliding plate (52) mounted on the sealing half-frame (51) and slidably mounted on the connecting frame (11), a third threaded rod (53) mounted on the connecting frame (11) for driving the sliding plate (52) to move, a dual-axis motor (54) mounted on the connecting frame (11) for driving the third threaded rod (53) to rotate, and a grinding half-ring (55) mounted on the sealing half-frame (51) for grinding the weld between the valve body and the valve seat.

5. The precision manufacturing equipment for a one-way valve according to claim 4, characterized in that, The docking mechanism (3) is mounted on the connecting frame (11); The docking mechanism (3) includes a lifting plate (31) mounted on the connecting frame (11), a hydraulic cylinder (32) mounted on the connecting frame (11) and used to drive the lifting plate (31) to move up and down, and a limiting telescopic column (33) mounted between the lifting plate (31) and the connecting frame (11) and used to limit and guide the lifting plate (31) when it moves up and down.

6. The precision manufacturing equipment for a one-way valve according to claim 5, characterized in that, The valve body clamping mechanism (4) is rotatably mounted on the lifting plate (31); The valve body clamping mechanism (4) includes a rotating platform (41) rotatably mounted on the lifting plate (31), a fourth threaded rod (42) mounted on the rotating platform (41), a second motor (43) mounted on the rotating platform (41) and used to drive the fourth threaded rod (42) to rotate, a drive disc (44) threadedly connected to the fourth threaded rod (42), a valve body clamping plate (45) slidably mounted on the rotating platform (41) and used to clamp and fix the valve body, and a drive rod (46) connected between the drive disc (44) and the valve body clamping plate (45).

7. The precision manufacturing equipment for a one-way valve according to claim 6, characterized in that, The sealing half-frame (51) consists of two sets and is symmetrically arranged on the worktable (1). Each of the two sealing half-frames (51) has a semi-annular sealing hole (511). The two semi-annular sealing holes (511) are combined to form a complete sealing hole and match the size of the rotating table (41) to form a complete sealing chamber when the valve body and valve seat are sealed. The welding mechanism (6) consists of two sets and is installed on the corresponding sealing half frame (51). The welding mechanism (6) includes a fixing frame (61) installed on the sealing half frame (51) and a welding gun (62) installed on the fixing frame (61). The welding gun (62) passes through the sealing half frame (51) to weld the valve body and valve seat joint under sealed conditions.

8. A precision manufacturing equipment for a one-way valve according to claim 3, characterized in that, The workbench (1) is provided with a valve seat hole (12), which is connected to the air supply chamber (14). The valve seat clamping mechanism (2) is installed in the valve seat hole (12) for sealing. The valve seat clamping mechanism (2) includes a drive platform (21) rotatably mounted on the support frame (13), a rotating shaft (22) mounted in the drive platform (21), a third motor (23) mounted in the drive platform (21) for driving the rotating shaft (22) to rotate, a rotating disk (24) mounted on the rotating shaft (22), a valve seat clamping plate (25) slidably mounted on the drive platform (21) for clamping the valve seat, a first connecting rod (26) hinged to the rotating disk (24), and a second connecting rod (27) connecting the first connecting rod (26) and the valve seat clamping plate (25).

9. A control method for a precision manufacturing equipment for a one-way valve, applied to the precision manufacturing equipment for a one-way valve as described in claim 7, characterized in that, include: After welding is completed, a detection gas at a preset pressure is introduced into the one-way valve, and the drop hole (18) is sealed by a preset sealing component. Control the rotating adsorption mechanism (7) to drive the one-way valve to rotate at a preset speed for one revolution, so that the welding point of the one-way valve passes through the air pressure sensor pre-placed on the inner wall of the sealed chamber. During the rotation of the one-way valve, the real-time air pressure value collected by the air pressure sensor is obtained in real time, and the real-time rotation angle of the rotating adsorption mechanism (7) is obtained simultaneously. The real-time air pressure value is compared with the preset reference air pressure value. When the real-time air pressure value is not greater than the preset reference air pressure value, the one-way valve is defined as completely sealed. The docking mechanism (3) is controlled to drive the one-way valve that has been welded to move axially, so that the welding area is polished by the polishing ring. When the real-time air pressure value is greater than the preset reference air pressure value, the one-way valve is defined as having a leak. The real-time rotation angle corresponding to when the real-time air pressure value starts to exceed the preset reference air pressure value is taken as the leak start angle, and the real-time rotation angle corresponding to when the real-time air pressure value drops back to no greater than the preset reference air pressure value is taken as the leak end angle. The leakage location range is obtained based on the leakage start angle and leakage end angle, and a leakage signal is generated; In response to the leakage signal, the rotating adsorption mechanism (7) is controlled to drive the one-way valve to rotate, so that the welding gun (62) welds the leakage area, and after the repair welding is completed, the detection gas is introduced into the sealed chamber again to perform a sealing test.

10. The control method for a precision manufacturing equipment for a one-way valve according to claim 9, characterized in that, The specific methods for rotating a one-way valve include: Obtain the fixed welding azimuth angle of the welding gun (62) in the sealed cavity, and take the leakage end angle as the near end and the leakage start angle as the far end; When the leakage initiation angle is greater than 180°, control the rotating adsorption mechanism (7) to rotate from the far end to the near end; When the leakage initiation angle is less than 180°, control the rotating adsorption mechanism (7) to rotate from the near end to the far end; When the leakage initiation angle is equal to 180°, either one can be selected for reversal operation; The angular difference between the leakage initiation angle and the fixed welding azimuth angle is calculated as the welding start rotation angle; The angle difference between the leakage termination angle and the fixed welding azimuth angle is calculated as the welding termination rotation angle; The rotation direction of the check valve is determined based on the magnitude of the leakage initiation angle; Control the rotating adsorption mechanism (7) to drive the one-way valve to rotate in the direction of rotation to start the welding rotation angle, so that the leakage start angle coincides with the fixed welding azimuth angle, and start the welding gun (62) to start welding. Then control the rotating adsorption mechanism (7) to drive the one-way valve to continue rotating in the same direction of rotation until the welding end angle is rotated so that the leakage end angle coincides with the fixed welding azimuth angle and then the welding stops.

Images