Detection assembly line for movement group of gas meter

Abstract

The invention relates to the technical field of gas meter production equipment, in particular to a gas meter movement group detection assembly line. The leakage detection unit, the rocker assembly unit and the running-in unit are sequentially arranged at the position adjacent to the first conveying mechanism in the conveying direction of the first conveying mechanism. The second conveying mechanism is provided with a circulating path and is used for receiving the running-in movement group; according to the scheme, a plurality of key procedures of leakage detection, rocker assembly, running-in, error detection, clip assembly and the like of the movement group are integrated on a unified assembly line, so that the inter-procedure material transfer and waiting time is shortened, the continuity and automation of the production process are realized, and the production efficiency is greatly improved; and the second conveying mechanism is provided with a circulation path, and is matched with the error curve detection unit and the error correction unit, so that automatic shunting, correction and recycling detection of unqualified movement groups are realized, and manual intervention is reduced as much as possible.

Description

Technical Field

[0001] This invention relates to the field of gas meter manufacturing equipment technology, and in particular to a gas meter movement assembly testing line. Background Technology

[0002] As the core component of gas meter measurement, the quality inspection of the gas meter movement assembly directly affects the quality of the fuel ratio. In the production process of the movement assembly, it is necessary to perform operations such as leak testing, error curve detection, and pointer calibration. The traditional gas meter movement assembly inspection process is usually decentralized and discontinuous, requiring manual or multiple transfers between workstations, resulting in slow production cycle, limited efficiency, and increased labor costs and inspection time.

[0003] Based on this, the applicant is considering designing a highly automated, continuous process gas meter movement assembly testing line. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a highly automated and continuous process testing line for gas meter core assembly.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A gas meter movement assembly testing line, comprising: A first conveying mechanism, and a leak detection unit, a rocker assembly unit, and a running-in unit arranged sequentially along the conveying direction adjacent to the first conveying mechanism; the leak detection unit is used to perform leak detection tests on the movement assembly and return the qualified movement assembly to the first conveying mechanism, the rocker assembly unit is used to assemble the rocker on the movement assembly, and the running-in unit is used to run-in the movement assembly after the rocker is assembled. The second conveying mechanism is equipped with a circulation path for receiving the core assembly after running-in. An error curve detection unit, a clip assembly unit, an error correction unit, and a qualified movement assembly unloading unit are provided near the second conveying mechanism. The error curve detection unit is used to detect the error curve of the movement assembly and determine whether it is qualified. The clip assembly unit is used to assemble the clips of the movement assembly that has passed the error curve detection. The error correction unit is used to correct the error of the movement assembly that has failed the error curve detection and then return it to the second conveying mechanism. The qualified movement assembly unloading unit is used to unload the movement assembly that has been assembled with clips.

[0006] The working principle and advantages of the gas meter core assembly testing line in this technical solution are as follows: The movement assembly to be tested passes through the first conveyor mechanism sequentially to the leak detection unit, the rocker arm assembly unit, and the running-in unit. At the leak detection unit, a leak test is performed on the movement assembly; unqualified movements are removed from the production line, while qualified movements are returned to the first conveyor mechanism. The rocker arm assembly unit automates the rocker arm assembly on the leak-test-qualified movements. The rocker arm-assembled movements are then transferred to the running-in unit for running-in processing. The running-in processed movements enter the loop path of the second conveyor mechanism, where they enter the error curve detection unit for error curve detection to determine if their operating error curve is qualified. Movements that pass the error curve detection are transferred to the clip assembly unit for automated clip assembly, and then sent to the qualified movement assembly removal unit for removal from the production line. Movements that fail the test are transferred to the error correction unit for error correction. After error correction, the movements are transferred back to the loop path of the second conveyor mechanism and re-transferred to the error curve detection unit for re-testing, thus completing the cyclical correction process for unqualified movements. This solution integrates multiple key processes such as leak testing of the movement assembly, rocker assembly, running-in, error detection, and clip assembly onto a unified production line, reducing material transfer and waiting time between processes, realizing continuous and automated production processes, and significantly improving production efficiency. The second conveying mechanism is equipped with a circulation path, which, together with the error curve detection unit and error correction unit, realizes automatic diversion, correction, and recirculation testing of defective movement assemblies, minimizing manual intervention.

[0007] Furthermore, the second conveying mechanism includes a first branch line and a second branch line with opposite conveying directions.

[0008] Furthermore, the error curve detection unit, the clip assembly unit, the qualified movement assembly off-line unit, and the error correction unit are arranged sequentially along the second branch line conveying direction.

[0009] Furthermore, the qualified movement assembly off-line unit includes an off-line conveying mechanism and an off-line handling unit, wherein the off-line handling unit is used to transfer the movement assembly between the second conveying mechanism and the off-line conveying mechanism.

[0010] Furthermore, it also includes: The first transport unit is used to transfer the movement assembly to the first conveying mechanism; The second transport unit is used to transfer the core assembly between the running-in unit, the first transport mechanism and the second transport mechanism; The third transport unit is used to transfer the movement assembly between the second transport mechanism and the error curve detection unit; The fourth transport unit is used to transfer the movement assembly between the second transport mechanism and the error correction unit.

[0011] Furthermore, the overall layout of the testing pipeline is L-shaped.

[0012] Furthermore, the leak detection unit includes a leak detection device for the gas meter movement assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the gas meter core assembly testing production line according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the gas meter movement leak detection device according to an embodiment of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 This is a front view structural schematic diagram of the gas meter movement leak detection device according to an embodiment of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the gas meter movement leak detection device according to an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the leak detection unit according to an embodiment of the present invention; Figure 7 This is a front view schematic diagram of the leak detection unit according to an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the placement mechanism according to an embodiment of the present invention; Figure 9 This is a cross-sectional structural diagram of the docking mechanism according to an embodiment of the present invention; Figure 10 This is a cross-sectional structural diagram of the test gas path mechanism and docking mechanism according to an embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the actuating mechanism according to an embodiment of the present invention; Figure 12 This is a top view of the movement assembly according to an embodiment of the present invention; In the above attached figures: 101. First transport unit; 102. First conveying mechanism; 103. Leak detection unit; 104. Rocker arm assembly unit; 105. Running-in unit; 106. Second transport unit; 107. First branch line; 108. Second branch line; 109. Error curve detection unit; 110. Third handling unit; 112. Clip assembly unit; 113. Offline handling unit; 114. Offline conveyor mechanism; 115. Fourth handling unit; 116. Error correction unit; 11. Rework station; 12. Gripping robot; 20. Mechanism assembly; 21. Air outlet pipe; 22. Protruding pointer dial; 210. Frame; 220. Leak detection unit; 300. Placement mechanism; 310. First lifting component; 320. Placement tray; 321. Limiting protrusion; 322. Limiting upright plate; 323. Limiting rod; 400. Docking mechanism; 410. Connecting pipe; 411. Sealing ring; 412. Sleeve; 420. Second lifting component; 500. Test air circuit mechanism; 510. Test tube; 511. Negative pressure generator; 512. Pressure relief valve; 513. Pressure holding valve; 514. Pressure sensor mounting hole; 600, Actuating mechanism; 610, Rotating component; 620, Coupling; 621, Cam; 630, First synchronous pulley; 640, Synchronous track; 650, Second synchronous pulley; 660, Actuating lever; 670, Micro switch; 710. Position sensor. Detailed Implementation

[0014] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0015] Reference Figure 1 This embodiment provides a gas meter movement assembly testing line, which includes: The first conveying mechanism 102, and the leak detection unit 103, the rocker assembly unit 104, and the running-in unit 105 are sequentially arranged along the conveying direction adjacent to the first conveying mechanism 102; the leak detection unit 103 is used to perform leak detection tests on the movement assembly 20 and return the qualified movement assembly 20 to the first conveying mechanism 102; the rocker assembly unit 104 is used to assemble the rocker on the movement assembly 20; and the running-in unit 105 is used to run-in the movement assembly 20 after the rocker is assembled. The second conveying mechanism is provided with a circulation path for receiving the core assembly 20 after it has been run-in. An error curve detection unit 109, a clip assembly unit 112, an error correction unit 116, and a qualified movement assembly 20 unloading unit are provided near the second conveying mechanism. The error curve detection unit 109 is used to detect the error curve of the movement assembly 20 and determine whether it is qualified. The clip assembly unit 112 is used to assemble the clips of the movement assembly 20 that has passed the error curve detection. The error correction unit 116 is used to correct the error of the movement assembly 20 that has failed the error curve detection and then return it to the second conveying mechanism. The qualified movement assembly 20 unloading unit is used to unload the movement assembly 20 after the clips have been assembled.

[0016] In this embodiment, the movement assembly 20 to be tested passes through the first conveying mechanism 102 sequentially via the leak detection unit 103, the rocker assembly unit 104, and the running-in unit 105. When passing through the leak detection unit 103, the movement assembly 20 undergoes a leak detection operation; unqualified movement assemblies 20 are removed from the production line, while qualified movement assemblies 20 return to the first conveying mechanism 102. The rocker assembly unit 104 automatically assembles the rocker on the qualified movement assembly 20. The rocker-assembled movement assembly 20 is then transferred to the running-in unit 105 for running-in processing. The running-in processed movement assembly 20 enters the circulation path of the second conveying mechanism. The mechanism 20 enters the error curve detection unit 109 for error curve detection to determine whether its operating error curve is qualified. The mechanism 20 that passes the error curve detection is transferred to the clip assembly unit 112 for automated clip assembly, and then sent to the qualified mechanism 20 off-line unit for off-line. The mechanism 20 that fails the detection is transferred to the error correction unit 116 for error correction. The mechanism 20 that has been error corrected is transferred back to the loop path of the second conveying mechanism and re-transported to the error curve detection unit 109 for re-detection, realizing the loop correction process of the unqualified mechanism 20. This solution integrates multiple key processes of the movement assembly 20, such as leak testing, rocker assembly, running-in, error detection, and clip assembly, into a unified production line. This reduces material transfer and waiting time between processes, realizes continuous and automated production processes, and significantly improves production efficiency. The second conveying mechanism is equipped with a circulation path, which, together with the error curve detection unit 109 and the error correction unit 116, enables automatic diversion, correction, and recirculation testing of defective movement assemblies 20, minimizing manual intervention.

[0017] Preferably, the second conveying mechanism includes a first branch line 107 and a second branch line 108 with opposite conveying directions; the first branch line 107 is used to convey the mechanism assembly 20 after running-in and the mechanism assembly 20 after being processed by the error correction unit 116 to the error curve detection unit 109; the second branch line 108 is used to receive the mechanism assembly 20 after being processed by the error curve detection unit 109 and convey it to the clip assembly unit 112 and the error correction unit 116; the two branches with opposite directions, the first branch line 107 and the second branch line 108, are arranged in parallel to form a loop path; the parallel arrangement of the first branch line 107 and the second branch line 108 is compact and has a high space utilization rate.

[0018] Preferably, the error curve detection unit 109, the clip assembly unit 112, the qualified movement assembly 20 unloading unit, and the error correction unit 116 are arranged sequentially along the conveying direction of the second branch line 108. After the movement assembly 20 is placed on the second branch line 108 through the error curve detection unit 109, it will sequentially pass through the clip assembly unit 112, the qualified movement assembly 20 unloading unit, and the error correction unit 116 along this line. When the movement assembly 20 passes through the clip assembly unit 112, the qualified movement assembly 20 is processed by the clip assembly unit 112 and conveyed to the qualified movement assembly 20 unloading unit for unloading. The unqualified movement assembly 20 is sent to the error correction unit 116 and then transferred back to the first branch line 107 from the correction unit. This sequential arrangement makes the layout of each processing unit more regular and orderly, which is convenient for process control.

[0019] Preferably, the qualified movement assembly 20 off-line unit includes an off-line conveying mechanism 114 and an off-line handling unit 113. The off-line handling unit 113 is used to transfer the movement assembly 20 between the second conveying mechanism and the off-line conveying mechanism 114. The off-line handling unit 113 is responsible for grabbing the qualified movement assembly 20 with the assembled clips and placing it on the off-line conveying mechanism 114, and then the off-line conveying mechanism 114 transports it to the finished product storage area or the next process.

[0020] Preferably, the gas meter movement assembly testing line further includes: a first transport unit 101 for transferring the movement assembly 20 to a first conveying mechanism 102; a second transport unit 106 for transferring the movement assembly 20 between a running-in unit 105, the first conveying mechanism 102, and the second conveying mechanism; a third transport unit 110 for transferring the movement assembly 20 between the second conveying mechanism and the error curve detection unit 109; and a fourth transport unit 115 for transferring the movement assembly 20 between the second conveying mechanism and the error correction unit 116. The first transport unit 101 is used to accurately deliver the stored movement assembly 20 to be inspected or the movement assembly 20 processed in the upstream process into the first conveyor mechanism 102; the second transport unit 106 is used to transfer the movement assembly 20 with the rocker arm assembled from the first conveyor mechanism 102 to the running-in unit 105 for running-in processing, and then transfer the running-in completed movement assembly 20 to the second conveyor mechanism; the third transport unit 110 is used to load the movement assembly 20 from the circulation path (first branch line 107) of the second conveyor mechanism into the error curve detection unit 109, and... After the inspection is completed, it is sent back to the second conveyor circulation path (second branch 108); the fourth handling unit 115 is used to grab the unqualified core assembly 20 on the second conveyor circulation path (second branch 108) and load it into the error correction unit 116, and after the correction is completed, it is sent back to the second conveyor circulation path (first branch 107); through the coordinated work of the above handling units, the entire production line realizes the fully automated and flexible transfer of materials; specifically, the above handling units can all adopt the handling robots in the prior art.

[0021] Preferably, the overall layout of the testing production line is L-shaped; the L-shaped layout can utilize the corners or edges of the factory, improving the utilization rate of factory space and is suitable for factory environments with limited space.

[0022] Specifically, the error correction unit 116 can process products that fail to pass the error curve detection unit's inspection after multiple corrections (generally 2 times) through the fourth handling unit 115 to remove them from the production line. The unqualified products can be centrally stacked or transferred to other conveying mechanisms for transport.

[0023] Specifically, the automated operation and information exchange of the gas meter core assembly testing line in this solution is based on existing identifier recognition and data communication technologies. Each core assembly is equipped with a unique QR code identifier, and each workstation on the assembly line is equipped with a universal QR code reader. When a core assembly is transferred to a workstation, its identity identifier and historical status information are obtained, and the corresponding operation of the workstation is executed accordingly. This QR code-based inter-workstation information transmission and judgment mechanism is a mature existing technology and will not be elaborated further here.

[0024] Preferably, the leak detection unit includes a gas meter movement leak detection device, as shown in the reference. Figures 1 to 12 The gas meter movement assembly leak detection device includes at least one leak detection unit 220, and the leak detection unit 220 includes a placement mechanism 300, a docking mechanism 400, and a test gas path mechanism 500. The placement mechanism 300 is used to receive the movement assembly 20 to be tested for leaks; The docking mechanism 400 is used to form a sealed connection with the air outlet pipe 21 of the movement assembly 20; The test air circuit mechanism 500 is connected to the docking mechanism 400 and is used to apply test negative pressure to the inside of the core assembly 20, adjust the test negative pressure, maintain the internal pressure of the core assembly 20, and detect the pressure change inside the core assembly 20. In this embodiment, the placement mechanism 300 receives the core assembly 20 to be leak-tested, and then the docking mechanism 400 is sealed to the air outlet pipe 21 of the core assembly 20, allowing the docking mechanism 400 to communicate with the internal chamber of the core assembly 20. Since the docking mechanism 400 is connected to the test air path mechanism 500, when the docking mechanism 400 is connected to the inside of the core assembly 20, the test air path mechanism 500 is also connected to the inside of the core assembly 20, and then the leak testing operation begins through the test air path mechanism 500. When the test air path mechanism 500 performs the leak testing operation, it first applies a test negative pressure higher than the target pressure range to the inside of the core assembly 20, then adjusts the test negative pressure to the target pressure range. Once the negative pressure inside the core assembly 20 reaches the target pressure range, it maintains the pressure, and then monitors the pressure change inside the core assembly 20 to determine whether the core assembly 20 is qualified. This device uses... The leak detection unit 220 automatically completes the leak detection operation of the gas meter movement assembly 20, achieving a high degree of automation. This greatly reduces manual operation time, improves the leak detection efficiency of the gas meter movement assembly 20, and can meet the cycle time requirements of large-scale production. The test gas circuit mechanism 500 first quickly generates a test negative pressure greater than the target pressure range, and then adjusts the test negative pressure to the target pressure range. Through this operation, the internal pressure of the movement assembly 20 can be quickly adjusted to the target pressure range, while avoiding the negative pressure from exceeding the tolerance range of the movement assembly 20 and causing damage to the internal components of the movement assembly 20. This improves the efficiency of a single leak detection and achieves rapid leak detection. Specifically, the movement assembly in the gas meter movement assembly leak detection device in the attached figure has a rocker arm, which is for reference only and does not represent that the gas meter movement assembly leak detection device in the production line performs leak detection on the movement assembly equipped with the rocker arm.

[0025] Preferably, such as Figures 1 to 7As shown, the placement mechanism 300 is positioned directly below the docking mechanism 400. The placement mechanism 300 includes a first lifting member 310 and a placement tray 320. The placement tray 320 has a limiting member for positioning the movement assembly 20. The placement tray 320 carries the movement assembly 20. The limiting member on the placement tray 320 matches the shape of the movement assembly 20, precisely fixing the movement assembly 20 in a preset position, ensuring that the air outlet pipe 21 of the movement assembly 20 is aligned with the center line of the docking mechanism 400. The placement mechanism 300 is positioned directly below the docking mechanism 400. After the movement assembly 20 is accurately positioned, the first lifting member 310 drives the placement tray 320 to move vertically upwards with the movement assembly 20 until the air outlet pipe 21 of the movement assembly 20 precisely docks with the docking mechanism 400 above. This achieves automatic docking while avoiding air leakage or damage caused by misalignment. To further improve leak detection efficiency, the limiting components include a limiting protrusion 321, a limiting plate 322, and a limiting rod 323 fixedly connected to the limiting plate. The limiting protrusion 321 limits the bottom of the mechanism assembly 20, the limiting plate 322 limits the left and right sides of the mechanism assembly 20, and the limiting rod 323 restricts the movement of the mechanism assembly 20. The above-mentioned limiting components can limit the mechanism assembly 20 in multiple directions when it is placed on the placement mechanism 300, ensuring the smooth progress of subsequent leak detection. More specifically, the placement mechanism 300 also includes a fixedly installed positioning sensor 710. The positioning sensor 710 can detect whether the mechanism assembly 20 is in position. When it is detected that it is in position (when the mechanism assembly 20 is in contact with the limiting rod 323), the first lifting component 310 is activated to rise and dock. The positioning sensor 710 can be a distance sensor in the prior art.

[0026] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 8As shown, the docking mechanism 400 includes a second lifting member 420, a connecting pipe 410 for docking with the air outlet pipe 21 of the movement assembly 20, and a sealing member sleeved on the connecting pipe 410; the lifting end of the second lifting member 420 is fixedly connected to a sleeve 412 sleeved on the connecting pipe 410, and the second lifting member 420 drives the sleeve 412 to move closer to or away from the sealing member when it is raised or lowered; when the placement mechanism 300 raises the movement assembly 20 to its position, the connecting pipe 410 extends into the air outlet pipe 21 of the movement assembly 20, and the sleeved on the connecting pipe 410 is then connected to the sealing member. The seal on the connector 410 (e.g., an O-ring 411) enters the vent pipe 21; then the second lifting member 420 drives the sleeve 412 fixed on its lifting end to move downward, applying pressure to the seal so that it fits tightly against the inner wall of the vent pipe 21 of the mechanism assembly 20, forming a reliable sealing connection; after the leak test is completed, the second lifting member 420 drives the sleeve 412 away from the seal, the seal rebounds, and then the first lifting member 310 lowers the mechanism assembly 20, completing the rapid disengagement.

[0027] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 9As shown, the test air circuit mechanism 500 includes a test tube 510 connected to the docking mechanism 400. A pressure sensor, a pressure holding valve 513, a pressure relief valve 512, and a negative pressure air source are sequentially arranged on the test tube 510 along the airflow direction. The negative pressure air source is configured to generate a test negative pressure greater than the target pressure range. The pressure relief valve 512 is configured to adjust the test negative pressure to the target pressure range. The pressure holding valve 513 is configured to close when the negative pressure reaches the target pressure range to maintain pressure. The pressure sensor is used to monitor pressure changes. At the start of leak testing, the negative pressure air source... A test negative pressure higher than the target pressure range is applied to the inside of the movement assembly 20 through a test tube 510 connected to the docking mechanism 400. Specifically, the test tube 510 is connected to the aforementioned docking tube 410. The pressure relief valve 512 can release the excess test negative pressure in the test tube 510, allowing the inside of the movement assembly 20 to quickly reach the negative pressure range of the target pressure range, while avoiding damage to the inside of the movement assembly 20 caused by excessively high negative pressure. The pressure sensor can monitor the pressure inside the movement assembly 20 in real time, and detect when the negative pressure value enters the target pressure range. When the pressure is within the specified range, the pressure holding valve 513 is closed, and a stable pressure holding test is initiated. During the pressure holding phase, the pressure sensor continuously monitors the pressure change within a predetermined time to determine whether the core assembly 20 is qualified. This solution effectively avoids damage to the core assembly 20 caused by overpressure, while quickly bringing the internal pressure of the core assembly 20 to the target pressure range, improving the efficiency of a single leak test and achieving rapid leak testing. The various components of the test air circuit mechanism 500 are connected sequentially along the airflow direction, with a clear structural layout that facilitates integration, installation, and maintenance. Specifically, the negative pressure air source can be a negative pressure generator 511 as used in existing technology, the pressure holding valve 513 can be an angle seat valve as used in existing technology, and the pressure sensor (not shown in the figure) is installed in the pressure sensor mounting hole 514. The pressure sensor can be a differential pressure transmitter as used in existing technology. Of course, the negative pressure air source, pressure relief valve 512, pressure holding valve 513, and pressure sensor can be selected according to the actual scenario. More specifically, a vacuum filter can also be installed between the pressure relief valve 512 and the pressure holding valve 513 to intercept impurities.

[0028] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 as well as Figure 11As shown, the leak detection unit 220 also includes a toggle mechanism 600, which includes a toggle element and a rotating assembly for driving its rotation. The toggle element is used to contact the pointer dial of the movement assembly 20 and drive it to rotate. After the toggle element of the toggle mechanism 600 is sealed and connected to the gas outlet pipe 21 of the movement assembly 20 on the docking mechanism 400 and the placement mechanism 300, it contacts the pointer dial on the top side of the movement assembly 20 on the placement mechanism 300 (specifically, it contacts the pointer dial protrusion 22 on the pointer dial). The rotation of the toggle element causes the pointer dial of the movement assembly 20 to rotate synchronously, thereby opening different chambers inside the movement assembly 20. The specific working principle of the gas meter movement assembly 20 is not described in detail here. This method allows for more comprehensive leak testing of the movement assembly 20 in different operating states. For example, when testing a movement assembly 20 with four chambers, the mechanism 600 is used to adjust the movement assembly 20 so that the first chamber is open and the second chamber is closed. Then, the test air path mechanism 500 tests the open first chamber. After the test is completed, the mechanism 600 is used to adjust the movement assembly 20 so that the first chamber is closed and the second chamber is open. The test air path mechanism 500 then tests the open second chamber, thus achieving comprehensive leak testing of the movement assembly 20. The leak testing process of this solution does not require manual intervention in the internal state switching of the movement assembly 20, further improving leak testing efficiency.

[0029] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 as well as Figure 11 As shown, the rotating assembly includes a rotating component 610, a coupling 620, a first synchronous pulley 630, a synchronous track 640, and a second synchronous pulley 650. The rotating component 610 drives the first synchronous pulley 630 through the coupling 620. The synchronous track 640 connects the first synchronous pulley 630 and the second synchronous pulley 650. The actuating component is connected to the second synchronous pulley 650. The output shaft of the rotating component 610 is connected to the first synchronous pulley 630 through the coupling 620, and then drives the second synchronous pulley 650 through the synchronous track 640, causing the second synchronous pulley 650 to drive the actuating component to rotate. The coupling 620 connects the rotating component 610 and the first synchronous pulley 630, and can play the role of connection, buffering, and compensating for axis deviation. The synchronous track 640 surrounds and connects the first synchronous pulley 630 and the second synchronous pulley 650, ensuring synchronous movement between the first synchronous pulley 630 and the second synchronous pulley 650, and realizing precise switching of the internal chambers of the movement assembly 20.

[0030] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 as well as Figure 11 As shown, the rotating assembly also includes a micro switch 670, and a cam 621 is provided on the coupling 620 to open or close the micro switch 670. The cam 621 is located on the coupling 620, and when the rotating component 610 drives the coupling 620 to rotate, the cam 621 also rotates accordingly. Due to the specific shape of the cam 621, when the actuating component of the toggle mechanism 600 reaches a preset key position (such as the accurate endpoint of chamber switching), the protruding part of the cam 621 will precisely trigger the micro switch 670. After the micro switch 670 is triggered, the rotation of the rotating component 610 is immediately stopped, ensuring the accuracy of the toggle component in switching the chambers of the movement assembly 20, avoiding over-rotation of the rotating component 610, and improving the leak detection effect. Specifically, the micro switch 670 includes at least two micro switches. Specifically, the toggle component is a toggle lever 660.

[0031] Preferably, such as Figures 1 to 4 As shown, the gas meter movement assembly leak detection device also includes a frame 210, on which multiple leak detection units 220 are installed. Each leak detection unit 220 can independently receive, connect, and test the movement assembly 20, and can perform leak detection operations on multiple movement assemblies 20 at the same time. All units share a frame 210 as the structural foundation, which facilitates unified gas and electrical wiring, as well as management by the central control system, and achieves efficient cycle production. Specifically, the aforementioned placement mechanism 300, connection mechanism 400, gas circuit testing mechanism 500, actuation mechanism 600, and position sensor 710 are installed on the frame 210.

[0032] More specifically, the aforementioned rotating component 610 can be directly adopted as a stepper motor in the prior art, and the aforementioned first lifting component 310 and second lifting component 420 can be directly adopted as telescopic cylinders in the prior art.

[0033] A method for leak detection of a gas meter movement assembly 20, which employs the aforementioned gas meter movement assembly leak detection device. This method includes the following steps: S1 places the movement assembly 20 to be inspected for leaks on the placement mechanism 300; S2 enables the air outlet pipe 21 of the movement assembly 20 to form a sealed connection with the docking mechanism 400; S3 applies a test negative pressure greater than the target pressure range to the inside of the core assembly 20 through the test air circuit mechanism 500; S4 Adjust the test negative pressure to the target pressure range; When the negative pressure inside the S5 movement assembly 20 is within the target pressure range, maintain the negative pressure inside the movement assembly 20 and keep the movement assembly 20 in a pressure-holding state for a period of time. S6 detects the pressure change inside the movement assembly 20 under pressure holding conditions and determines whether the movement assembly 20 is qualified based on the pressure change.

[0034] The method of this solution enables the negative pressure inside the mechanism assembly 20 to quickly reach the target pressure range, shortens the overall pressure stabilization time, improves the leak detection cycle of a single mechanism assembly 20, and meets the efficiency requirements of large-scale automated production; it can also effectively avoid damage to the internal components of the mechanism assembly 20 caused by excessive negative pressure, thus ensuring the quality of the tested product.

[0035] Specifically, the target pressure range is 360Pa to 480Pa, which can meet the leak detection requirements of most gas meter movement groups 20; the negative pressure holding time is 1000ms. If the pressure leakage inside the movement group 20 is ≤120P within the pressure holding time, it is qualified; otherwise, it is unqualified.

[0036] Specifically, such as Figure 1 and Figure 3 As shown, the gas meter movement assembly leak detection device also includes a gripping robot 12 and a rework station 11. The gripping robot 12 can grip the movement assembly 20 to be leak-tested from the production line or stacking rack and accurately place it on the placement mechanism 300 of the leak detection unit 220. At the same time, the gripping robot 12 can also remove the qualified or unqualified movement assembly 20 from the unit after the leak detection is completed. A rework station 11 is set near the leak detection unit 220. The gripping robot 12 can place the unqualified movement assembly 20 on the rework station 11 for rework processing. The reworked movement assembly 20 can be placed on the top side of the rework station 11, so that the gripping robot can grab the reworked product to the leak detection station 220 for a second leak detection operation.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A gas meter movement set detection flow line, characterized in that, Comprise: A first conveying mechanism, and a leak detection unit, a rocker assembly unit and a running-in unit arranged in sequence along the conveying direction of the first conveying mechanism adjacent to the first conveying mechanism; the leak detection unit is used for leak detection test on the movement assembly and returns the qualified movement assembly to the first conveying mechanism, the rocker assembly unit is used for rocker assembly of the movement assembly, and the running-in unit is used for running-in of the movement assembly after the rocker assembly; A second conveying mechanism provided with a circulation path for receiving the movement assembly after running-in; The second conveying mechanism is provided with an error curve detection unit, a pin assembly unit, an error correction unit and a qualified movement assembly offline unit; the error curve detection unit is used for error curve detection of the movement assembly and judgment of whether it is qualified, the pin assembly unit is used for pin assembly of the movement assembly qualified in error curve detection, the error correction unit is used for error correction of the movement assembly unqualified in error curve detection and then returns to the second conveying mechanism, and the qualified movement assembly offline unit is used for offline of the movement assembly after pin assembly.

2. A gas meter movement set detection flow line as claimed in claim 1, characterized in that, The second conveying mechanism comprises a first branch line and a second branch line with opposite conveying directions.

3. A gas meter movement set detection flow line as claimed in claim 2, wherein, The error curve detection unit, the pin assembly unit, the qualified movement assembly offline unit and the error correction unit are arranged in sequence along the conveying direction of the second branch line.

4. A gas meter movement assembly detection flow line as claimed in claim 1, wherein, The qualified movement assembly offline unit comprises an offline conveying mechanism and an offline handling unit, and the offline handling unit is used for transferring the movement assembly between the second conveying mechanism and the offline conveying mechanism.

5. A gas meter movement set detection flow line as claimed in claim 1, wherein, Further comprise: A first handling unit for transferring the movement assembly to the first conveying mechanism; A second handling unit for transferring the movement assembly between the running-in unit, the first conveying mechanism and the second conveying mechanism; A third handling unit for transferring the movement assembly between the second conveying mechanism and the error curve detection unit; A fourth handling unit for transferring the movement assembly between the second conveying mechanism and the error correction unit.

6. A gas meter movement set detection flow line as claimed in claim 1, wherein, The overall layout of the detection pipeline is L-shaped.

7. A gas meter movement assembly detection flow line as claimed in claim 1, wherein, The leak detection unit comprises a gas meter movement assembly leak detection device.

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