An integrated device for assembling and detecting a corner valve and a working method thereof

Abstract

This invention relates to the field of angle valve assembly technology, specifically to an integrated equipment and method for angle valve assembly and testing. The equipment utilizes a multi-station turntable design and a rationally arranged workbench layout. While some stations conduct airtightness tests on the side and bottom ports of the angle valve in the inlet and outlet air test areas respectively, other stations simultaneously perform handwheel assembly, achieving parallel testing and assembly. Furthermore, after the angle valve is pressurized in the inlet air test area, the sealing head remains sealed. As the valve rotates to the assembly station, the pressure holding test continues during the handwheel assembly of another angle valve at the same station. This extends the pressure holding test time on the side port of the angle valve, allowing the equipment to fully capture pressure changes and reduce the risk of misjudgment of leakage. This collaborative working method breaks through the efficiency bottleneck of traditional sequential testing and assembly, ensures thorough testing, and facilitates the simultaneous improvement of angle valve sealing performance verification and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of angle valve assembly technology, and in particular to a device and its working method that integrates angle valve assembly and testing. Background Technology

[0002] In the field of angle valve manufacturing, to ensure that the sealing performance of the product meets the usage requirements, an airtightness test is usually included in the angle valve assembly process, and the handwheel assembly operation also needs to be completed. In the existing technology, the relevant production equipment is generally equipped with core components such as a workbench testing mechanism and an assembly mechanism. Through corresponding mechanical structures and control logic, the angle valve's positioning, clamping, airtightness testing, and handwheel assembly operations are realized to complete the processing flow of the angle valve from a semi-finished product to a finished product.

[0003] However, in existing angle valve manufacturing equipment, the airtightness testing and handwheel assembly processes are mostly performed sequentially. That is, the airtightness test of one angle valve must be completed before the handwheel assembly operation can begin, meaning testing and assembly cannot proceed synchronously. This operating mode limits the pressure holding time for airtightness testing to the cycle time of a single process. To avoid excessively low overall production efficiency, sufficient pressure holding time is often not allowed for airtightness testing, resulting in pressure sensors failing to fully capture potential pressure changes and affecting the accuracy of the airtightness test results. Summary of the Invention

[0004] To address the shortcomings mentioned above in the background technology, the present invention provides an integrated device for assembling and testing angle valves and its working method.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, the present invention discloses a device for integrating angle valve assembly and testing, the device comprising:

[0007] The workbench has multiple rest areas around it, some of which are water inlet air test area and assembly area. The workbench is equipped with a device for assembling angle valve handwheels in the assembly area.

[0008] A turntable is mounted on the workbench and rotates. The turntable is located in the central area enclosed by the various stopping areas. Multiple workstations are arranged in a ring on the turntable. Each workstation is equipped with a detection seat and an assembly seat. The side and bottom surfaces of the detection seat are provided with clearance holes. An angle valve is placed behind the detection seat, and the two ports of the angle valve correspond to the two clearance holes respectively.

[0009] A gas testing device, comprising a sealing head, a gas testing pipe, and a gas generating unit, wherein each station of the turntable is equipped with the gas testing pipe and the sealing head, the sealing head having a gas hole, the sealing head being restricted to move relative to the clearance hole on the side of the detection seat, the gas testing pipe and the gas hole establishing a gas path connection, and the gas testing pipe being equipped with a pressure sensor;

[0010] When the turntable drives the angle valve to the inlet air test area, the sealing head moves to block the port on the side of the angle valve. The outlet of the gas generating unit passes upward through the turntable and moves to connect with the inlet of the air test pipeline, so that the gas is injected into the angle valve sequentially through the air test pipeline and the sealing head. The air test pipeline is closed to form a pressure holding system. The pressure sensor collects the air pressure data in the air test pipeline for airtightness testing. The device for assembling the angle valve handwheel corresponds to the position of the assembly seat and synchronously performs the handwheel installation operation on the angle valve on the assembly seat.

[0011] In a possible implementation of the first aspect, the device further includes a clamping device, wherein each of the detection seats on the turntable is equipped with the clamping device, the clamping device including a first drive cylinder and a second drive cylinder, the first drive cylinder and the second drive cylinder being located on opposite sides of the detection seat, and the sealing head in the turntable station being fixed to the piston rod of the first drive cylinder, and a blocking member being fixed to the end of the piston rod of the second drive cylinder; when the angle valve is placed on the detection seat, the piston rods of the first drive cylinder and the second drive cylinder both move toward the detection seat, so that the blocking member and the sealing head clamp and fix the angle valve, and the sealing head seals the port on the side of the angle valve.

[0012] In a possible implementation of the first aspect, the workbench is set as a water outlet air test area after the assembly area along the rotation trajectory of the turntable, and the sealing head and the air test pipe are arranged below the water outlet air test area on the workbench;

[0013] The test air pipe of the water outlet test air area is fixed below the workbench. The sealing head of the water outlet test air area is restricted to moving up and down relative to the clearance hole at the bottom of the test seat. When the turntable drives the angle valve to the water outlet test air area, the sealing head of the water outlet test air area moves upward to block the port at the bottom of the angle valve. The gas generating unit inputs gas into the test air pipe of the water outlet test air area and injects it into the angle valve through the sealing head. Then the test air pipe is closed and pressure is maintained to perform airtightness testing on the port at the bottom of the angle valve.

[0014] In a possible implementation of the first aspect, the device further includes a clamping device, which is configured in the water outlet air test area. The clamping device includes a first drive cylinder and a second drive cylinder. The first drive cylinder is fixed to the bottom of the workbench, and the sealing head is fixed to the piston rod of the first drive cylinder. A first column is fixed on the workbench, and the second drive cylinder is fixed below the first column. A blocking member is fixed to the end of the piston rod of the second drive cylinder. When the angle valve is placed on the detection seat and moved to the water outlet air test area, the piston rods of both the first and second drive cylinders move toward the detection seat, so that the blocking member and the sealing head clamp and fix the angle valve, and the sealing head seals the port on the bottom surface of the angle valve.

[0015] In one possible implementation of the first aspect, the clamping device further includes a solenoid valve and a control cylinder. The solenoid valve is fixed to the turntable and controls the extension and retraction of the piston rods of the first drive cylinder and the second drive cylinder. The control cylinder is fixed in the docking area where the angle valve needs to be clamped or released. When the turntable moves the detection seat to the docking area where the control cylinder is fixed, the piston rod of the control cylinder extends upward to trigger the solenoid valve. The solenoid valve controls the extension and retraction of the piston rods of the first drive cylinder and the second drive cylinder according to the triggered signal, so that the sealing head and the blocking member clamp or release the angle valve.

[0016] Secondly, the present invention also discloses a method for operating the above-mentioned device, the method comprising the following steps:

[0017] Loading and unloading operation: The docking area for loading operation is the material exchange area. The worker places the angle valve to be tested on the test seat in the material exchange area, and at the same time transfers the angle valve that has completed the airtightness test to the assembly seat of the same work station. Then the sealing head seals the side port of the angle valve to be tested on the test seat.

[0018] Air pressure holding and handwheel pre-pressurization: The rotation of the turntable drives the angle valves with sealed side ports to pass through the air pressure holding area at the water inlet in sequence. After the air pressure holding is completed in the air pressure holding area at the water inlet, the angle valves enter the side port pressure holding test state. The angle valves continue to maintain this pressure holding test state as the turntable continues to rotate. The pressure sensor collects air pressure data in real time. At the same time, the air pressure holding area at the water inlet performs the assembly operation of pre-pressurizing the handwheel of the angle valves on the assembly seat at the same station. The assembly seats at other stations of the turntable also pass through the assembly area with the turntable to perform handwheel assembly, realizing the parallel operation of pressure holding test and handwheel pre-pressurization.

[0019] Handwheel tightening and continuous pressure holding: The turntable continues to rotate, and the angle valve that has completed the handwheel pre-pressure continues to pass through the next assembly area with the corresponding work station. The assembly area is used to perform the assembly operation of inserting screws into the handwheel and threading them with the valve core of the angle valve. At the same time, the angle valve in the pressure holding state continues to rotate with the turntable, and the pressure holding test is continuously carried out during the tightening of the screws.

[0020] Preparation for cyclic operation: The turntable drives the angle valve that has completed the side pressure holding test to continue rotating back to the docking area for loading and unloading operations. The worker adds a new angle valve to be tested to the test seat in the docking area, and places the angle valve that has passed the airtightness test on the assembly seat to enter the next work cycle. Throughout the process, multiple stations on the turntable rotate synchronously, always keeping at least one station's angle valve undergoing pressure holding test and at least one station performing handwheel assembly operation.

[0021] In a possible implementation of the second aspect, the workbench is further provided with a water outlet air test area corresponding to the rotation trajectory of the turntable, and the stopping area for the loading operation is a material changing area. When the turntable rotates, the sequence of each station is as follows: material changing area, water inlet air test area, assembly area, water outlet air test area, and then back to the material changing area. The method further includes the following steps after the handwheel is tightened and the pressure is maintained continuously, and before the preparation for the cyclic operation:

[0022] The turntable drives the angle valve that has completed the side pressure test to pass through the outlet air test area with the corresponding workstation. The sealing head of the outlet air test area seals the bottom port of the angle valve and completes the inflation, so that the angle valve enters the bottom port pressure test state. The pressure sensor continuously collects air pressure data to carry out bottom port airtightness detection. After the test is completed, the angle valve continues to rotate with the turntable back to the material changing area.

[0023] In a second possible implementation, while conducting the airtightness test of the bottom port of the angle valve of the test seat in the air test area at the water outlet, the equipment moves the angle valve with the handwheel assembled on the assembly seat at the same station out of the turntable.

[0024] In a possible implementation of the second aspect, the workbench stops at the outlet air test area as a sorting area. When the turntable rotates, the sequence of each workstation is: material changing area, inlet air test area, assembly area, outlet air test area, sorting area, and then back to the material changing area. The method further includes the following steps after the handwheel is tightened and pressure is maintained, and before the preparation for the cyclic operation:

[0025] The turntable drives the angle valve that has completed the bottom port airtightness test to the sorting area along with the corresponding workstation. If the angle valve is determined to be unqualified based on the data collected by the pressure sensor, the equipment removes the unqualified angle valve from the test seat and moves it out of the turntable.

[0026] In a possible implementation of the second aspect, the steps of air testing and pressure holding, and handwheel pre-pressurization, further include:

[0027] After the turntable drives the angle valve with its side port already sealed to the air test area at the water inlet, the valve core of the angle valve on the test seat is first tightened by the equipment, and then air is injected into the side port of the angle valve and pressure is maintained. During this process, the pre-pressurization operation of the angle valve handwheel on the assembly seat at the same station is carried out simultaneously.

[0028] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: Based on the multi-station design of the turntable and the reasonable layout of the workbench resting area, when some stations drive the angle valve to conduct side and bottom port air tightness tests in the inlet and outlet air test areas respectively, other stations can simultaneously perform handwheel assembly, realizing parallel testing and assembly, significantly improving operational productivity. Furthermore, after the angle valve is pressurized in the inlet air test area, the sealing head remains sealed. When it flows to the assembly station with the turntable, the pressure holding test continues during the handwheel assembly process of another angle valve in the same station, effectively extending the pressure holding test time of the angle valve's side port, allowing the pressure sensor to fully capture pressure changes and reducing the risk of misjudgment of leakage. This collaborative working method not only breaks the efficiency bottleneck of traditional sequential testing and assembly but also ensures sufficient testing, ultimately achieving simultaneous improvement in angle valve sealing performance verification and production efficiency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0030] Figure 2 This is a top view of the present invention.

[0031] Figure 3 for Figure 2 A schematic diagram of the device that conceals the various docking areas of the workbench.

[0032] Figure 4 A three-dimensional structural diagram showing the installation of a testing seat, assembly seat, and air testing device at one of the stations on the turntable.

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the testing base.

[0034] Figure 6 This is a three-dimensional structural diagram of the present invention viewed from below at the bottom of the workbench.

[0035] Figure 7 A three-dimensional structural diagram of an air outlet component installed on a push cylinder.

[0036] Figure 8 This is a schematic diagram showing how the turntable drives the test seat to rotate to the air test area at the water outlet.

[0037] Figure 9 A three-dimensional structural diagram showing the flow of workstations on the turntable to the air-testing area at the water inlet.

[0038] Figure 10 A three-dimensional structural diagram showing the flow of workstations on the turntable to the sorting device.

[0039] Figure 11 for Figure 10 An enlarged schematic diagram of point A in the middle.

[0040] Figure 12 A three-dimensional structural diagram showing the transfer of the assembly seat on the turntable to the pressing device.

[0041] Figure 13 A three-dimensional structural diagram showing the flow of workstations on the turntable to the screw machine.

[0042] Figure 14 A three-dimensional structural diagram showing the transfer of the assembly seat on the turntable to the transfer device. Detailed Implementation

[0043] To make the purpose, technical solution, and advantages of the invention clearer, the invention will now be described in further detail with reference to the accompanying drawings.

[0044] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this embodiment, unless otherwise stated, "a plurality of" means two or more.

[0045] Furthermore, in this embodiment, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used to describe and clarify relative positions, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0046] This invention provides a device integrating angle valve assembly and testing, as shown in the attached document. Figures 1 to 4As shown, the equipment includes a workbench 1, a turntable 2, an air testing device, a tightening device 5, and a clamping device. The turntable 2 is rotatably mounted on the workbench 1. Multiple stations are evenly distributed in a ring on the surface of the turntable 2, each equipped with a testing seat 11 for supporting the angle valve 4 to be tested. The workbench 1 is divided into multiple resting areas 101 arranged in a circular array on the outer circumference of the turntable 2. Two resting areas 101 serve as the inlet air testing area 101a and the outlet air testing area 101b, respectively. When the turntable 2 rotates the angle valve to the inlet air testing area 101a or the outlet air testing area 101b, the air testing device can perform airtightness testing on the side port (i.e., the inlet port of the angle valve) and the bottom port (i.e., the outlet port of the angle valve) of the angle valve 4 placed on the testing seat 11.

[0047] As attached Figure 2 and 4 As shown, an assembly base 12 is fixed on one side of the test base 11 at the workstation of the turntable 2. The angle valve 4, after completing the airtightness test, can be transferred and placed on the assembly base 12. The stopping area 101 between the inlet air test area 101a and the outlet air test area 101b of the workbench 1 serves as the assembly area 101c. The assembly area 101c is also equipped with a device for assembling the handwheel onto the angle valve 4. The turntable 2 rotates intermittently, driving each workstation to sequentially move to each stopping area 101, thereby orderly completing the airtightness test and handwheel assembly of the angle valve 4 at each workstation. The rotation drive structure of the turntable 2 can adopt the method shown in the attached figure. Figure 6 As shown, a cam divider 21 is fixedly installed at the bottom of the workbench 1. The output shaft of the cam divider 21 is connected to the turntable 2 for transmission, thereby precisely driving the turntable 2 to drive each workstation to rotate intermittently to the corresponding stopping area 101.

[0048] As the turntable 2 rotates, it moves the testing seat 11 to the inlet air test area 101a or the outlet air test area 101b for air tightness testing. Simultaneously, the assembly seats 12 at other workstations move to the positions corresponding to the assembly handwheel devices. This multi-station collaborative operation mode allows for simultaneous handwheel assembly of angle valves 4 that have already undergone air tightness testing at other workstations while air tightness testing is being performed on one angle valve 4. This operation breaks through the efficiency bottleneck of traditional sequential testing and assembly, thus improving production efficiency.

[0049] It is worth mentioning that one of the stopping areas 101 of workbench 1 can be used as a dedicated loading and unloading area, i.e., attached Figure 3In the material changing area 101d, the testing seat 11 and assembly seat 12 are integrated and set on the same station of the turntable 2. This structural design allows the operator to complete two operations at this station when the turntable 2 rotates to the stopping area 101 of the loading and unloading area: transferring the angle valve 4 that has completed the airtightness test to the assembly seat 12, and simultaneously placing the angle valve 4 to be tested into the testing seat 11. This operation mode requires only one operator to complete the loading and unloading operations for testing the angle valve 4 and the loading and unloading operations for assembling the handwheel of the angle valve 4. At the same time, other stations can continuously carry out the airtightness testing and handwheel assembly operations for the angle valve 4, effectively avoiding operation gaps and forming a highly efficient and continuous automated operation mode, which not only reduces labor costs but also significantly improves overall production efficiency.

[0050] As attached Figure 5 As shown, clearance holes 111 are provided on both the side and bottom surfaces of the test seat 11. When the angle valve 4 is placed on the test seat 11 and positioned, the two ports of the angle valve 4 precisely correspond to the two clearance holes 111, providing a structural basis for the subsequent airtightness test air path connection. (See attached diagram.) Figure 4 and 6 The air testing device includes an air testing pipe 31, a sealing head 32, and a gas generating unit. Each station of the turntable 2 and the air testing area 101b at the water outlet are equipped with an air testing pipe 31 and a sealing head 32. The end face of the sealing head 32 is integrated with an air hole. The air testing pipe 31 and the air hole are connected by a flexible hose to form a reliable air path. The air testing pipe 31 is equipped with a pressure sensor 311 to monitor the air pressure change in real time and promptly feed back the pressure data during the testing process to the control system, providing strong support for the accurate judgment of the air tightness test results.

[0051] The specific arrangement of the testing device in the turntable 2 station is as follows: the testing pipe 31 is fixed above the turntable 2, and the sealing head 32 in the turntable 2 station is limited to directional movement relative to the clearance hole 111 on the side of the test seat 11. This movement restriction can be achieved by the driving force provided by the clamping device configured on each test seat 11. The clamping device includes a first drive cylinder 22 and a second drive cylinder 23, which are symmetrically arranged on both sides of the test seat 11. The sealing head 32 in the turntable 2 station is fixed to the piston rod end of the first drive cylinder 22, thereby realizing the directional movement function of the sealing head 32 relative to the side of the test seat 11. The piston rod end of the second drive cylinder 23 is fixedly equipped with a blocking member 24. After the angle valve 4 is placed on the detection seat 11 and initially positioned, the piston rods of the first drive cylinder 22 and the second drive cylinder 23 extend synchronously toward the detection seat 11, driving the blocking part 24 and the sealing head 32 to work together to firmly clamp and position the angle valve 4. At the same time, the sealing head 32 can accurately fit and seal the side port of the angle valve 4, ensuring the sealing performance of the detection air circuit.

[0052] The gas generating unit is preferably an air compressor (not shown in the attached diagram), as shown in the attached diagram. Figure 6 and 7 As shown, the testing device also includes a push cylinder 33 and an air outlet 34. Both the air compressor and the push cylinder 33 are fixed below the worktable 1. The air outlet 34 is fixed to the end of the piston rod of the push cylinder 33, enabling the push cylinder 33 to drive the air outlet 34 to rise and fall stably relative to the worktable 1 and the turntable 2. The air outlet 34 adopts a tubular structure, with through holes on both the side and top of the air outlet 34. The through holes on the side of the air outlet 34 are connected to the output end of the air compressor through a flexible hose, while the through hole at the top of the air outlet 34 constitutes the air outlet of the gas generating unit. When the turntable 2 rotates to the position corresponding to the air test area 101a at the inlet end or the air test area 101b at the outlet end of the air test device, the push cylinder 33 immediately drives the air outlet component 34 to rise until the upper through hole of the air outlet component 34 connects with the air inlet port of the air test pipe 31, realizing reliable air passage between the air compressor and the air test pipe 31. This allows the compressed gas generated by the air compressor to be stably delivered to the corresponding port of the angle valve 4 to be tested in sequence through the air outlet component 34, the air test pipe 31 and the sealing head 32, providing a continuous and stable air source guarantee for air tightness testing.

[0053] During equipment operation, when the turntable 2 drives the angle valve 4 to rotate to the inlet test air zone 101a, the sealing head 32 moves synchronously and precisely seals the side port of the angle valve 4. The outlet end (i.e., the outlet component 34) of the gas generating unit in the inlet test air zone 101a passes upward through the turntable 2 and connects with the inlet end of the test air pipeline 31, so that the gas generated by the gas generating unit is stably input into the test air pipeline 31 and continuously injected into the port of the angle valve 4 through the sealing head 32. When the gas delivery reaches the preset pressure, the valve core at the inlet end of the test air pipeline 31 automatically closes, thereby maintaining the air pressure inside the side port of the angle valve 4 after being sealed by the sealing head 32, forming a stable pressure, and the outlet end of the gas generating unit returns downward to the bottom of the workbench 1. Since the sealing head 32 reliably seals the side port of the angle valve 4 on the turntable 2, and the test gas pipeline 31 can be disconnected from the gas generating unit, the sealing head 32 can rotate synchronously with the turntable 2 to seal the side port of the angle valve 4. This allows the turntable 2 to maintain the airtightness detection of the side port of the angle valve 4 during rotation. The detection time can be flexibly set to the time it takes for the turntable 2 to rotate intermittently for one stop zone 101, or it can be extended to the time spanning multiple stop zones 101, providing sufficient pressure holding time to ensure the accuracy of the detection results.

[0054] The air testing device is installed in the air testing area 101b at the water outlet as follows: the air testing pipe 31 is fixed below the workbench 1. The air testing pipe 31 is also equipped with a pressure sensor 311, and the air testing pipe 31 is connected to the air hole of the sealing head 32 via a hose to form an air passage. The sealing head 32 is restricted to directional vertical movement relative to the clearance hole 111 at the bottom of the detection seat 11. This movement restriction can also be achieved by a clamping device providing driving force. Specifically, the clamping device located in the air testing area 101b at the water outlet is an attached device. Figure 8 As shown, the first drive cylinder 22 is fixed to the bottom of the workbench 1, and the sealing head 32 is fixed to the end of the piston rod of the first drive cylinder 22. A first column 13 is fixed at the corresponding position on the workbench 1, and the second drive cylinder 23 is fixed below the first column 13. A blocking member 24 is fixed to the end of the piston rod of the second drive cylinder 23. When the turntable 2 drives the angle valve 4 placed on the test seat 11 to flow to the water outlet test area 101b, the piston rods of the first drive cylinder 22 and the second drive cylinder 23 extend synchronously toward the test seat 11. The blocking member 24 then firmly presses down the angle valve 4 and fixes it on the test seat 11. The sealing head 32 moves upward and precisely seals the bottom port of the angle valve 4. At this time, the gas generating unit of the gas outlet test zone 101b delivers gas to the inside of the test pipe 31. The gas is then injected into the angle valve 4 through the sealing head 32. When the gas delivery reaches the preset pressure, the valve core of the test pipe 31 automatically closes and forms a pressure holding state, thereby carrying out the airtightness test of the bottom port of the angle valve 4. The test duration can be set to the time it takes for the turntable 2 to intermittently rotate from one stop zone 101 to another adjacent stop zone 101. The test is carried out by utilizing the pause time of the intermittent rotation of the turntable 2.

[0055] As attached Figure 9As shown, the workbench 1 is also equipped with a tightening device 5 in the air test area 101a at the water inlet end. The tightening device 5 includes a lifting cylinder 51, a lifting seat 52, and a rotary motor 53. A second column 14 is fixed on the workbench 1. The lifting seat 52 is connected to the second column 14 through a sliding pair consisting of a slide rail and a slider, thereby limiting the lifting seat 52 to achieve stable vertical lifting relative to the turntable 2. The rotary motor 53 is fixed to the lifting seat 52, and its output shaft extends towards the turntable 2. A sleeve is fixed at the end of the output shaft below the lifting seat 52. The lifting cylinder 51 is fixed to the upper end of the second column 14. The end of the piston rod of the lifting cylinder 51 is fixedly connected to the lifting seat 52. The extension and retraction of the piston rod of the lifting cylinder 51 drives the lifting seat 52 and the rotary motor 53 to synchronously complete the lifting action relative to the turntable 2. When the turntable 2 moves the workstation to the inlet air test area 101a, the lifting cylinder 51 drives the lifting seat 52, along with the rotary motor 53, to descend, causing the sleeve to be fitted onto the outside of the valve core of the angle valve 4 on the test seat 11. Then, the rotary motor 53 drives the sleeve to rotate, tightening and fixing the valve core of the angle valve 4. After the valve core tightening operation is completed, the gas generating unit injects compressed gas into the air test device at this workstation to maintain pressure on the port on the side of the angle valve 4.

[0056] The airtightness detection method of the above-mentioned air testing device is as follows: the pressure sensor 311 collects the air pressure value inside the air testing pipeline 31 in real time and transmits the collected air pressure value to the control system of the equipment in real time. The control system uses the pressure decay rate per unit time as the core judgment criterion to evaluate the sealing performance of the angle valve 4. If the air pressure is maintained above the preset threshold during the pressure holding period, the angle valve 4 is judged to be qualified for sealing performance; otherwise, the angle valve 4 is judged to have a leakage failure and is unqualified. If the control system determines that the angle valve 4 is leaking, the control system marks the station information of the unqualified angle valve 4 for subsequent accurate sorting. The sorting process can be realized by the sorting device 6 set in the docking area 101 after the air testing area 101b at the water outlet. This integrated control process of detection, judgment, and sorting not only improves the accuracy and timeliness of sealing performance detection, but also avoids unqualified products from flowing into subsequent processes through automated sorting, which can effectively ensure the quality of products leaving the factory.

[0057] As attached Figure 4 As shown, the stopping area 101 after the water outlet air test area 101b of the workbench is set as the sorting area 101e, and the sorting device 6 is fixed on the sorting area 101e. (Refer to the attached diagram.) Figure 10 and 11A third column 15 is fixed on the workbench 1, and the sorting device 6 is assembled on the third column 15. The sorting device 6 includes a two-axis moving mechanism 61, a first gripper 62, and a hopper 63. The two-axis moving mechanism 61 is fixed to the third column 15 and is located above the turntable 2. The two-axis moving mechanism 61 is used to drive the first gripper 62 to achieve precise horizontal and vertical movement relative to the turntable 2. The first gripper 62 can be a pneumatic gripper. The hopper 63 is located at the edge of one side of the workbench 1. When a defective angle valve 4 moves with the turntable 2 to the stopping area 101 of the sorting device 6, the two-axis moving mechanism 61 drives the first gripper 62 to descend and firmly clamp the defective angle valve 4. Then, the first gripper 62 rises and moves horizontally to transfer the defective angle valve 4 to the top of the hopper 63 and release it. The defective angle valve 4 slides down through the hopper 63 into a unified collection container. Furthermore, to avoid interference between the hopper 63 and the components on the turntable 2, the sorting device 6 also includes a transverse cylinder 64. This transverse cylinder 64 is fixed to the worktable 1, and the hopper 63 is fixed to the end of the piston rod of the transverse cylinder 64. When the turntable 2 rotates once and pauses, the piston rod of the transverse cylinder 64 extends, moving the hopper 63 above the turntable 2 to precisely engage the defective angle valve 4 released by the first gripper 62. This causes the defective angle valve 4 to slide into the collection container. Afterward, the transverse cylinder 64 drives the piston rod to retract, moving the hopper 63 away from the turntable 2 area. This design effectively avoids the movement trajectories of components such as the detection seat 11, gripping device, and assembly seat 12 on the turntable 2, preventing interference between the sorting action and other operating components, ensuring smooth operation of each process of the equipment, and simultaneously achieving automated and precise sorting and centralized collection of defective angle valves 4, improving the continuity and stability of the overall operation.

[0058] As attached Figure 12 and 13As shown, the assembly device for the handwheel of angle valve 4 includes a pressing device 7 and a screwdriver 8. The resting area 101 after the water inlet air test area 101a is the assembly area 101c. The pressing device can be arranged in the water inlet air test area 101a, and the screwdriver 8 is arranged in the assembly area 101c after the water inlet air test area 101a. A support frame 17 and a fourth column 16 are fixed on the workbench 1. The support frame 17 and the fourth column 16 are used for assembling the pressing device 7 and the screwdriver 8, respectively. The pressing device 7 includes a pressing cylinder 71 and a pressing head 72. The pressing cylinder 71 is fixed on the support frame 17. The piston rod of the pressing cylinder 71 extends and retracts vertically, and the pressing head 72 is fixed to the end of the piston rod of the pressing cylinder 71. When the turntable 2 drives the angle valve 4, which already has a handwheel, to the stopping area 101 of the pressing device 7, the piston rod of the pressing cylinder 71 extends downward, causing the pressing head 72 to press the handwheel into the corresponding assembly position of the angle valve 4. The screw machine 8 is fixed on the fourth column 16. When the turntable 2 drives the angle valve 4, which has completed the handwheel pre-pressing, to the stopping area 101 of the screw machine 8, the screw machine 8 automatically screws the screw downward into the pre-threaded hole of the valve core of the angle valve 4, thereby fixing the handwheel to the valve core of the angle valve 4. Through the step-by-step assembly method of pressing for pre-positioning and screw fastening, the precise alignment of the handwheel assembly is ensured, and the stability of the connection between the handwheel and the angle valve 4 is significantly improved, ensuring the consistency and reliability of the assembly process.

[0059] As attached Figure 14 As shown, the device of the present invention also includes a transfer device 9, which is arranged in the outlet air test area 101b. The transfer device 9 includes a rotary cylinder 91 and a second gripper 92. The rotary cylinder 91 is a rotary clamping cylinder, which is fixed on the workbench 1 near the first column 13. The second gripper 92 is located at the lower end of the swing arm of the rotary cylinder 91. When the turntable 2 drives a station to the outlet air test area 101b, the air test device in the outlet air test area 101b performs an airtightness test on the bottom port of the angle valve 4 of the test seat 11. At the same time, the rotary cylinder 91 drives the swing arm to rotate above the assembly seat 12 of the station through lifting and rotating actions, so that the second gripper 92 accurately clamps the angle valve 4 that has completed the handwheel assembly. Then the swing arm resets and through lifting and rotating actions, the finished angle valve 4 is smoothly transferred out of the turntable 2 area for centralized collection. Furthermore, a discharge port 102 can be opened on one side of the air test area 101b at the water outlet of the workbench 1. A conveyor belt can be connected below the discharge port 102. After the angle valve 4 with the handwheel assembly completed is transferred out of the turntable 2, the second gripper 92 releases the angle valve 4, allowing the finished angle valve 4 to fall from the discharge port 102 into the conveyor belt, and then be smoothly transported to the next production process by the conveyor belt. This synchronous operation design of the transfer device 9 and the testing process realizes the parallel operation of airtightness testing and finished product transfer, which not only avoids the waiting gap between processes, but also ensures the orderly collection of finished products through automated transfer, providing strong support for the smooth connection of subsequent processes.

[0060] In addition, as attached Figure 4 and 6 As shown, the clamping device also includes a solenoid valve 25 and a control cylinder 26. Each station of the turntable 2 is equipped with a solenoid valve 25, which is used to control the extension and retraction of the piston rods of the first drive cylinder 22 and the second drive cylinder 23. Furthermore, the solenoid valve 25 is connected to the air source (e.g., a gas generating unit) of the worktable 1 using an air slip ring (not shown in the attached figure). The fixed end of the air slip ring is fixed to the center of the worktable 1 and connected to the main pipe of the air source. The rotating end of the air slip ring is connected to the solenoid valve 25 through an external short air pipe. Without the need to install an air circuit inside the turntable 2, compressed air can be continuously supplied to the solenoid valve 25 and the corresponding first drive cylinder 22 and second drive cylinder 23 during the intermittent rotation of the turntable 2, and the air circuit connection will not interfere with the rotation of the turntable 2.

[0061] The trigger end of the solenoid valve 25 faces downwards. The turntable 2 has a clearance port at the trigger end of the solenoid valve 25. The workbench 1 has fixed control cylinders 26 in all the stopping areas 101 where the angle valve 4 needs to be clamped or released. Specifically, this includes the empty stopping area 101 between the material changing area 101d, the assembly area 101c and the water outlet test area 101b, and the sorting area 101e. At the same time, the workbench 1 also has clearance ports at the positions corresponding to each control cylinder 26. When the turntable 2 moves the detection seat 11 to the stopping area 101 where the control cylinder 26 is fixed, the control system detects the workstation arrival signal and directly sends a working signal to the control cylinder 26, causing the piston rod of the control cylinder 26 to extend upward, pass through the clearance opening of the worktable 1 and the turntable 2 in sequence, and trigger the solenoid valve 25. The solenoid valve 25 controls the piston rods of the first drive cylinder 22 and the second drive cylinder 23 to extend and retract according to the trigger signal, thereby driving the sealing head 32 and the blocking member 24 to achieve the clamping or releasing action of the angle valve 4. This automatic control method based on workstation position triggering can accurately realize the clamping, fixing and releasing of the angle valve 4 at each key process node, ensuring the smooth connection of each process such as loading and unloading, detection, and sorting, and improving the automation level and reliability of the overall equipment operation.

[0062] Preferably, the equipment of the present invention is equipped with two independent control systems to achieve precise coordinated control. Both control systems can be PLC controllers. One control system is set on the turntable 2 and is used to receive the air pressure data transmitted by the pressure sensors 311 in the air testing devices of each workstation in real time. It completes the airtightness detection and judgment of the angle valve through a preset pressure attenuation rate algorithm and simultaneously marks the workstation information of unqualified products. The other control system is set below the workbench 1 and undertakes the overall control function of the equipment. It is not only responsible for coordinating the drive of the turntable 2 to achieve intermittent rotation, but also can precisely control the actions of the actuators such as the control cylinder 26, the push cylinder 33, the pressing cylinder 71, the screw machine 8, the sorting device 6, and the transfer device 9. Moreover, all kinds of cylinders in this equipment (such as the control cylinder 26, the push cylinder 33, the pressing cylinder 71, etc.) can be selected from actuators with piston rods, such as cylinders. Based on the above control logic, in the process of the turntable 2 intermittently rotating and driving each workstation to flow to each docking area 101 in a preset order, the working method of the equipment of the present invention is as follows:

[0063] Loading and unloading operation: The worker places the angle valve 4 to be tested on the test seat 11 in the material changing area 101d. At the same time, the angle valve 4 that has completed the airtightness test on the test seat 11 is transferred to the assembly seat 12 in the same station. Then, the piston rod of the control cylinder 26 in the docking area 101 extends to trigger the solenoid valve 25. The solenoid valve 25 controls the piston rod of the first drive cylinder 22 and the second drive cylinder 23 to extend, driving the sealing head 32 and the blocking member 24 to clamp the angle valve 4 to be tested on the test seat 11.

[0064] Air pressure holding and handwheel pre-pressurization: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stop area 101 (i.e., water inlet air test area 101a). Lifting cylinder 51 drives lifting seat 52 to descend, so that rotary motor 53 tightens the valve core of angle valve 4 on detection seat 11. Then, push cylinder 33 of water inlet air test area 101a drives air outlet 34 to rise, passing through workbench 1 and turntable 2 and connecting with air inlet end of air test pipeline 31. Compressed gas generated by air compressor is injected into the side port of angle valve 4 through air outlet 34, air test pipeline 31, and sealing head 32. After the gas delivery reaches the preset pressure, the valve core of air test pipeline 31 closes to hold pressure. Pressure sensor 311 collects air pressure data in real time and transmits it to control system. At the same time, air outlet 34 descends to reset. Meanwhile, piston rod of pressing cylinder 71 of pressing device 7 descends, pre-pressing handwheel to the corresponding assembly position of angle valve 4. Then, piston rod of pressing cylinder 71 rises.

[0065] Handwheel tightening and continuous pressure holding: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stop area 101 (i.e. assembly area 101c). Screw machine 8 screws the screws down into the angle valve 4 of assembly seat 12 and fixes the handwheel on the valve core of the angle valve 4. During this process, sealing head 32 continues to maintain the sealing state of the side port of angle valve 4. The air tightness test of angle valve 4 of test seat 11 is continuously carried out during the screwing of angle valve 4 of assembly seat 12.

[0066] Test completion and release: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stop area 101 (i.e., empty stop area 101). The piston rod of the control cylinder 26 of the stop area 101 extends upward to trigger the solenoid valve 25. The solenoid valve 25 controls the piston rod of the first drive cylinder 22 and the second drive cylinder 23 to retract, completing the airtightness test of the side port of the angle valve 4 on the test seat 11. If the test fails, the angle valve 4 of the workstation is marked by the control system.

[0067] Test and transfer: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stop area 101 (i.e., the water outlet test area 101b). The piston rods of the first drive cylinder 22 and the second drive cylinder 23 extend, and the blocking member 24 presses down to fix the angle valve 4 located on the test seat 11. The sealing head 32 blocks the bottom port of the angle valve 4 upward. The gas generating unit supplies gas to the test pipeline 31. The gas is injected into the bottom port of the angle valve 4 through the sealing head 32. The valve core of the test pipeline 31 closes and maintains pressure to carry out the airtightness test of the bottom port. If the test fails, the angle valve 4 is marked by the system. At the same time, the second gripper 92 of the transfer device 9 transfers the angle valve 4 with the handwheel assembled on the assembly seat 12 out of the turntable 2.

[0068] Sorting of non-conforming products: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stopping area 101 (i.e., sorting area 101e). After turntable 2 stops, if the angle valve 4 of the workstation is qualified, sorting device 6 does not work. If the angle valve 4 of the workstation fails the test, sorting device 6 starts working. The transverse cylinder 64 of sorting device 6 drives hopper 63 to move above turntable 2. At the same time, the two-axis moving mechanism 61 drives the first gripper 62 to descend, grip the non-conforming angle valve 4 and then rise, move it transversely to the top of hopper 63 and then release it. The non-conforming angle valve 4 slides down through hopper 63 to the collection container. Then the transverse cylinder 64 drives hopper 63 to reset and leave the area of ​​turntable 2.

[0069] Preparation for cyclic operation: Turntable 2 continues to rotate intermittently, driving the corresponding workstation to the next stop area 101 (i.e., material change area 101d). The staff transfers the qualified angle valve 4 to the assembly seat 12, and then replenishes the new angle valve 4 to be tested to the test seat 11, and enters the next work cycle.

[0070] It should be noted that the above working method only applies to the working method of a single station of turntable 2 moving through each docking area 101. At the same time, other stations on turntable 2 are moving synchronously in their corresponding docking areas 101 according to the same working method. When each station is performing the handwheel assembly process of angle valve 4, the angle valve 4 at the same station is in the pressure holding and air testing state. By parallelizing the processes, the air testing time is extended, which can improve the accuracy of air tightness testing.

[0071] In summary, the turntable 2 of this invention is configured with six workstations, and the workbench 1 is correspondingly provided with six stopping areas 101. The stopping areas 101 are, in order, a material changing area 101d, a water inlet air testing area 101a, an assembly area 101c for the screw machine 8, an empty stopping area 101, a water outlet air testing area 101b, and a sorting area 101e for the sorting device 6. During operation, the turntable 2 rotates intermittently to achieve synchronous flow of multiple workstations. While a single workstation is completing the entire process of feeding, side port air tightness testing, pre-pressurizing handwheel, screw tightening handwheel, bottom port air tightness testing, sorting, and unloading in sequence, other workstations are performing parallel operations at their corresponding process nodes. This efficiently superimposes the air tightness testing of the angle valve 4 with the handwheel assembly process, significantly shortening the processing cycle of a single angle valve 4 and improving the unit time productivity. Meanwhile, the side port of angle valve 4 moves with turntable 2 after being pressurized in the air test area 101a at the water inlet. During the subsequent handwheel assembly process, the side port of angle valve 4 is continuously monitored. By utilizing the parallel process characteristics, the pressure holding time for the airtightness test of angle valve 4 is extended, effectively reducing the risk of false detection and improving the accuracy of identifying defective products. In addition, by using the rotation characteristic of turntable 2, loading and unloading are set in the same docking area 101, allowing one worker to simultaneously complete loading, transfer, and retrieval operations without the need for multiple positions, thus reducing labor costs. It can be seen that this invention effectively solves the problems of disconnect between inspection and assembly, low efficiency, and high false detection rate in the traditional production of angle valve 4 through the synergistic effect of parallel processes, extended pressure holding, and automated linkage, achieving multiple advantages such as improved efficiency, accurate inspection, and optimized labor costs, and has outstanding practical value.

[0072] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using the concept of the present invention shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A device integrating angle valve assembly and testing, characterized in that, The device includes: The workbench has multiple rest areas around it, some of which are water inlet air test area and assembly area. The workbench is equipped with a device for assembling angle valve handwheels in the assembly area. A turntable is mounted on the workbench and rotates. The turntable is located in the central area enclosed by the various stopping areas. Multiple workstations are arranged in a ring on the turntable. Each workstation is equipped with a detection seat and an assembly seat. The side and bottom surfaces of the detection seat are provided with clearance holes. An angle valve is placed behind the detection seat, and the two ports of the angle valve correspond to the two clearance holes respectively. A gas testing device, comprising a sealing head, a gas testing pipe, and a gas generating unit, wherein each of the aforementioned stations on the turntable is equipped with the gas testing pipe and the sealing head; The sealing head has an air hole and is restricted to move relative to the clearance hole on the side of the detection seat. The test air pipe and the air hole are connected by an air path, and the test air pipe is equipped with a pressure sensor. The workbench is set as a water outlet test air area in a stopping area after the assembly area along the rotation trajectory of the turntable. The sealing head and the test air pipe are set below the water outlet test air area on the workbench. The test air pipe of the water outlet test air area is fixed below the workbench, and the sealing head of the water outlet test air area is restricted to move up and down relative to the clearance hole at the bottom of the detection seat. The clamping device is provided in each of the detection seats of the turntable and the air test area at the water outlet. The clamping device includes a first drive cylinder and a second drive cylinder. The sealing head is fixed to the piston rod of the first drive cylinder, and a blocking member is fixed to the end of the piston rod of the second drive cylinder. In the detection seat, the first drive cylinder and the second drive cylinder of the clamping device are respectively located on both sides of the detection seat. After the angle valve is placed in the detection seat, the piston rods of the first drive cylinder and the second drive cylinder move toward the detection seat, so that the blocking member and the sealing head clamp and fix the angle valve, and the sealing head seals the port on the side of the angle valve. In the outlet air test area, the first drive cylinder of the clamping device is fixed to the bottom of the workbench, the first column is fixed on the workbench, and the second drive cylinder is fixed under the first column. When the turntable drives the angle valve to the outlet air test area, the piston rods of the first drive cylinder and the second drive cylinder move towards the detection seat, so that the blocking member and the sealing head clamp and fix the angle valve. The sealing head of the outlet air test area moves upward to seal the port of the bottom surface of the angle valve. The gas generating unit inputs gas into the air test pipe of the outlet air test area and injects it into the angle valve through the sealing head. Then the air test pipe is closed and pressure is maintained to perform air tightness testing on the bottom port of the angle valve. When the turntable drives the angle valve to the inlet air test area, the sealing head moves to seal the port on the side of the angle valve. The outlet of the gas generating unit passes upward through the turntable and moves to connect with the inlet of the air test pipeline, so that the gas is injected into the angle valve sequentially through the air test pipeline and the sealing head. The air test pipeline is closed to form a pressure holding system. The pressure sensor collects the air pressure data in the air test pipeline for airtightness testing. The device for assembling the angle valve handwheel corresponds to the position of the mounting base and simultaneously performs the handwheel installation operation on the angle valve on the mounting base.

2. The device for integrating angle valve assembly and testing as described in claim 1, characterized in that, The clamping device also includes a solenoid valve and a control cylinder. The solenoid valve is fixed to the turntable and controls the extension and retraction of the piston rods of the first drive cylinder and the second drive cylinder. The control cylinder is fixed in the docking area where the angle valve needs to be clamped or released on the worktable. When the turntable moves the detection seat to the docking area where the control cylinder is fixed, the piston rod of the control cylinder extends upward to trigger the solenoid valve. The solenoid valve controls the extension and retraction of the piston rods of the first drive cylinder and the second drive cylinder according to the triggered signal, so that the sealing head and the blocking member clamp or release the angle valve.

3. A method for operating a device integrating angle valve assembly and testing, wherein the device for integrating angle valve assembly and testing as described in claim 1 is used, characterized in that... The method includes the following steps: Loading and unloading operation: The docking area for loading operation is the material exchange area. The worker places the angle valve to be tested on the test seat in the material exchange area, and at the same time transfers the angle valve that has completed the airtightness test to the assembly seat of the same work station. Then the sealing head seals the side port of the angle valve to be tested on the test seat. Air pressure test and handwheel pre-pressurization: The turntable rotates and drives the angle valves with sealed side ports to pass through the air test area at the water inlet in sequence. After the air is filled in the air test area at the water inlet inlet, the angle valves enter the pressure test state at the side ports. The angle valves continue to maintain this pressure test state as the turntable continues to rotate. The pressure sensor collects air pressure data in real time. At the same time, the air test area at the water inlet inlet performs the assembly operation of pre-pressurizing the handwheel of the angle valves on the assembly base at the same station. The assembly bases at other stations of the turntable also pass through the assembly area with the turntable to perform handwheel assembly, so as to realize the parallel operation of pressure test and handwheel pre-pressurization. Handwheel tightening and continuous pressure holding: The turntable continues to rotate, and the angle valve that has completed the handwheel pre-pressure continues to pass through the next assembly area with the corresponding work station. In this assembly area, the assembly operation of inserting the screw into the handwheel and threading it with the valve core of the angle valve is carried out. At the same time, the angle valve in the pressure holding state continues to rotate with the turntable, and the pressure holding test is continuously carried out during the tightening of the screw. Preparation for cyclic operation: The turntable drives the angle valve that has completed the side pressure test to continue rotating back to the docking area for loading and unloading operations. The worker adds a new angle valve to be tested to the test seat in the docking area, and places the angle valve that has passed the airtightness test on the assembly seat to enter the next work cycle. Throughout the process, multiple stations on the turntable rotate synchronously, always keeping at least one station's angle valve undergoing pressure testing and at least one station performing handwheel assembly operations.

4. The working method of the integrated angle valve assembly and testing device as described in claim 3, characterized in that, The workbench, corresponding to the rotation trajectory of the turntable, also includes a water outlet air test area. When the turntable rotates, the sequence of each workstation is as follows: the material changing area, the water inlet air test area, the assembly area, the water outlet air test area, and then back to the material changing area. The method, after the handwheel is tightened and the pressure is maintained continuously and before the preparation for the cyclic operation, further includes the following steps: The turntable drives the angle valve that has completed the side pressure test to pass through the outlet air test area with the corresponding work station. The sealing head of the outlet air test area seals the bottom port of the angle valve and completes the inflation, so that the angle valve enters the bottom port pressure test state. The pressure sensor continuously collects air pressure data to carry out bottom port air tightness detection. After the test is completed, the angle valve continues to rotate with the turntable back to the material changing area.

5. The working method of the integrated angle valve assembly and testing device as described in claim 4, characterized in that, While conducting the air tightness test on the bottom port of the angle valve of the test seat in the air test area at the water outlet, the equipment moves the angle valve with the handwheel assembled on the assembly seat at the same station out of the turntable.

6. The working method of the integrated angle valve assembly and testing device as described in claim 4 or 5, characterized in that, The workbench stops at the outlet air test area, which is the sorting area. When the turntable rotates, the sequence of each station is as follows: material changing area, inlet air test area, assembly area, outlet air test area, sorting area, and then back to the material changing area. The method, after the handwheel is tightened and the pressure is maintained continuously and before the preparation for the cyclic operation, also includes the following steps: The turntable drives the angle valve that has completed the bottom port airtightness test to the sorting area along with the corresponding workstation. If the angle valve is determined to be unqualified based on the data collected by the pressure sensor, the equipment removes the unqualified angle valve from the test seat and moves it out of the turntable.

7. The operating method of the integrated angle valve assembly and testing device as described in any one of claims 3 to 5, characterized in that, The steps of air testing and pressure holding, and handwheel pre-pressurization, also include: After the turntable drives the angle valve with its side port already sealed to the air test area at the water inlet, the valve core of the angle valve on the test seat is first tightened by the equipment, and then air is injected into the side port of the angle valve and pressure is maintained. During this process, the pre-pressurization operation of the angle valve handwheel on the assembly seat at the same station is carried out simultaneously.

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