Automatic test line and test method for finished meter

Abstract

The invention discloses a finished meter automatic test line and test method, and the test line comprises a conveying line which is provided with a tool tray matched with the conveying line, and an initial calibration table, an automatic tooth matching device, a re-calibration table and an airtightness detection table which are sequentially arranged along the conveying line. The initial end of the conveying line is provided with a material receiving station and a binding station, and the binding station is provided with an RFID code scanning device used for binding the tool tray with a to-be-tested finished meter placed on the tool tray; the initial calibration table is of a single-machine-head double-acting structure, and a gear receiving groove is formed in the tool tray. Information binding is mainly adopted, full-process real-time tracking is carried out on a meter body on a conveying line, corresponding information is fed back to a background or corresponding detection equipment, and meanwhile, the production line testing function is optimized and perfected from the layout of all the detection equipment and the structures of an initial calibration table, tooth matching equipment and an airtight detection table; and the overall test efficiency and the consistency of the test standard are improved.

Description

Technical Field

[0001] This invention belongs to the field of gas meter testing, specifically relating to an automated testing line and testing method for gas meters. Background Technology

[0002] As a key component of the gas supply system, the accuracy of gas meters directly impacts the economic interests of both suppliers and consumers. Throughout the development of the gas meter industry, traditional gas meter testing technologies have played a vital role, providing support for ensuring the basic quality of gas meters. However, with advancements in technology and the development of the times, the limitations of traditional testing technologies have become increasingly apparent. These limitations include low testing efficiency, inconsistent testing standards, and limited testing functions, making it difficult to meet the industry's urgent need for efficient, accurate, and stable testing. Summary of the Invention

[0003] In view of this, the present invention provides an automated testing line and method for gas meter assembly to solve the problems of low testing efficiency, inconsistent testing standards, or limited functionality in the prior art.

[0004] The technical solution is as follows: An automated test line for table generation, the key features of which are: a conveyor line with tooling trays adapted to it, and a primary calibration table, an automatic gear matching device, a recalibration table and an airtightness testing table arranged sequentially along the conveyor line; The initial end of the conveyor line has a receiving station and a binding station, wherein the binding station is equipped with an RFID scanning device for binding the tooling pallet to the test table placed on it. The primary calibration platform is a single-head, double-acting structure, and the tooling tray has a gear receiving groove.

[0005] By adopting the above solution, the initial calibration, gear fitting, recalibration, and airtightness testing are integrated into one system. By using RFID information binding, gear fitting can be optimized in a timely manner based on the initial calibration information. The system has complete related testing functions, which helps to improve the overall testing efficiency and the consistency of testing standards.

[0006] Preferably, the automatic gear-matching device includes a support plate with annularly distributed through holes for supporting a gear cylinder for storing counting gears. The bottom of the support plate has a receiving plate covering all the through holes and a receiving funnel located circumferentially outside the receiving plate. The upper edge diameter of the receiving funnel is D1, and the diameter of the receiving plate is D2. The difference between diameter D1 and diameter D2 is greater than the diameter of the largest counting gear. There is a height gap between the receiving plate and the support plate. The receiving plate is equipped with a push-out mechanism, which is used to push the counting teeth that fall onto the receiving plate outward. This design occupies less space, makes the test line more compact, simplifies the structure, and facilitates implementation.

[0007] Preferably, the receiving plate has a hollow structure in the middle and is provided with a mounting frame. The pushing mechanism is fixed on the mounting frame and includes a pushing plate, a cylinder A for driving the pushing plate to extend and retract radially, and a motor for driving the pushing plate to rotate circumferentially.

[0008] Preferably, the two radially arranged gear cylinders are paired up in a circular array. The receiving plate has raised ribs on both sides corresponding to each group of gear cylinders, with adjacent ribs forming a counting tooth limiting groove. The pusher plate has limiting shoulders on both sides. This design improves the accuracy of gear ejection and prevents adjacent counting gears from being ejected or from falling out of the pushing range.

[0009] Preferably, the conveyor line includes a front conveyor main line and a return line arranged in parallel, and a tray transverse movement device A is provided at the beginning and end of the front conveyor main line and the return line respectively. On one side of the main feed line, a secondary feed line A is located corresponding to the initial calibration station, and a secondary feed line B is located corresponding to the recalibration station and the airtightness testing station. There are at least two recalibration stations and at least two airtightness testing stations, staggered along the main feed line and secondary feed line B. This scheme, using secondary feed lines, helps improve overall testing efficiency and ensures overall testing quality.

[0010] Preferably, a space is left between the front feeder line A and the front feeder line B, which constitutes a manual processing area. Corresponding to the location of this manual processing area, a lateral movement device B is provided between the main feeder line and the return line. This design facilitates manual tooth loading and manual processing of defective products, meeting various needs.

[0011] As a preferred embodiment: the primary calibration platform includes a primary calibration frame covering the main front feed line and the secondary front feed line A, the primary calibration frame having a longitudinal beam arranged parallel to the main front feed line, and the longitudinal beam having a ventilation tooling joint arranged along its length direction. The longitudinal beam is movably supported on the primary calibration frame and is equipped with a drive mechanism. This drive mechanism moves the longitudinal beam between the main feed line and the secondary feed line A, stopping it directly above either of them. This single-head, dual-action design helps shorten waiting time, improves testing efficiency, and ensures consistency in the primary calibration results.

[0012] Preferably, the airtightness testing station is a dry airtightness testing station, including a testing frame, and a propulsion mechanism and an airtightness tightening mechanism disposed on the testing frame, wherein the propulsion mechanism and the airtightness tightening mechanism are respectively located on both sides of the conveyor line; The airtight expansion mechanism includes a fixed plate and a movable plate facing each other, and a cylinder B for driving the movable plate closer to and further away from the fixed plate. The fixed plate has a fixed seat, and the movable plate has movable seats corresponding to the fixed seats. A hollow inflation rod is connected to each movable seat, and the end of the inflation rod has an expansion ring. Using this solution, in use, the ends of the two inflation rods are inserted into two pipe joints on the same instrument body, and then pulled back. The expansion rings are then compressed to achieve a tight seal on the pipe joints. Air is then inflated through the inflation rods to perform an airtightness test. After the test is completed, the inflation rods extend forward, the expansion rings return to their original position, and the instrument body is detached. This method is simpler to operate, provides a more reliable sealing structure, improves the accuracy of test results, and has a lower implementation cost.

[0013] A method for automated testing of tabulated tables, the key to which is to use the aforementioned automated testing line for tabulated tables and perform the following steps: S1, Place the meter to be tested onto the tooling tray at the receiving station, and then transport it to the binding station. Use an RFID scanning device to bind the tooling tray to the meter to be tested. S2, the tooling tray loaded with the test table enters the testing area of ​​the primary calibration table through the main front line and the secondary front line A in turn. The ventilation tooling connector on the primary calibration table switches positions to complete the primary calibration. S3, the completed table is transferred to the gear matching station of the automatic gear matching equipment after initial calibration. The automatic gear matching equipment identifies and obtains the gear matching data based on RFID, finds the corresponding counting gear, and drops it into the gear receiving slot on the tooling tray. S4, the completed gear assembly is transferred to the corresponding manual processing area for manual installation of the gear pair; S5, the meter with gear pair installed is transferred to the testing area of ​​the recalibration station. The meter body information is obtained by RFID identification, then testing is carried out, error data is uploaded, and qualified and unqualified meter bodies are distinguished at the same time. S6, the completed table is transferred to the testing area of ​​the air tightness testing station. The table body information is also obtained by RFID identification, and then the air tightness test is carried out. S7, after the airtightness test is completed, the meter is taken off the line. The corresponding meter is identified by RFID at the end of the line and various test information is obtained. The meter on the tooling pallet is comprehensively judged. If it is qualified, it waits for the meter to be picked up by a person or robot before the empty tooling pallet is released. If it is unqualified, it is directly released and returned to the manual processing area.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The automated testing line for table production provided by this invention mainly adopts information binding to track the table body on the conveyor line in real time throughout the entire process and feeds back the corresponding information to the background or the corresponding testing equipment. At the same time, it optimizes the layout of each testing equipment and the structure of the initial calibration station, gear fitting equipment and airtightness testing station to improve the testing function of the production line, improve the overall testing efficiency and the consistency of testing standards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the initial calibration platform structure; Figure 4 for Figure 3 Top structure diagram; Figure 5 This is a schematic diagram of an automatic gear-fitting device. Figure 6 for Figure 5 Sectional view; Figure 7 for Figure 5 Exploded view; Figure 8 for Figure 7 Axonometric drawing; Figure 9 This is a schematic diagram of the airtightness testing platform. Figure 10 A schematic diagram showing the layout of the propulsion mechanism and the airtight expansion mechanism; Figure 11 This is a schematic diagram of the airtight expansion mechanism. Figure 12 for Figure 11 Sectional view; Figure 13 This is a schematic diagram of the tooling pallet structure. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] refer to Figures 1 to 13The automated testing line shown includes a conveyor line 100 with a tooling tray 110 adapted to it. In this application, the conveyor line 100 mainly includes a front conveyor line 120 and a return line 130 arranged in parallel. The initial end of the front conveyor line 120 or the end of the return line 130 is provided with a material receiving station and a binding station. Then, the conveyor line 100 is sequentially provided with a preliminary calibration station, an automatic tooth matching station, a manual handling station, a recalibration station, and an airtightness testing station. Except for the manual handling station, the other stations are respectively provided with a preliminary calibration table 200, an automatic tooth matching device 300, a recalibration table 400, and an airtightness testing table 500. The two ends of the front conveyor line 120 and the return line 130 are respectively provided with a tray lateral movement device A.

[0018] The binding station is equipped with an RFID scanning device. Each test instrument has a unique shell code, and the tooling tray 110 has a unique electronic tag. The tooling tray 110 can be bound to the test instrument placed on it by the RFID scanning device at the binding station. The primary calibration table 200 is a single-head double-acting structure. The tooling tray 110 has a gear receiving slot 111. The gear pair matched by the automatic gear matching device 300 can fall into the gear receiving slot 111 of the tooling tray 110 at the gear matching station.

[0019] Key reference Figures 5 to 8 The automatic gear-matching device 300 mainly includes a gear-matching frame 360 ​​and a support plate 310 horizontally supported on the gear-matching frame 360, as shown in the figure. The support plate 310 has through holes distributed in a ring, and the through holes are stepped, used to support gear cylinders 320. The gear cylinders 320 are used to store counting gears. Two gear cylinders 320 are arranged in pairs in the radial direction, and the counting gears stored in them form a matching gear pair. Each gear pair is different to meet the needs of different dial indicators. The bottom of the support plate 310 has a support covering all the through holes. The receiving plate 330 and the receiving funnel 340 located on the outer periphery of the receiving plate 330 have an upper diameter of D1 and a diameter of D2. The difference between diameter D1 and diameter D2 is greater than the diameter of the maximum counting gear. The bottom of the receiving funnel 340 is provided with a slide 341 extending to near the front feed line 120. When the tooling pallet 110 is stopped at the automatic gear matching station, the gear pair falling from the slide 341 of the receiving funnel 340 can fall into the gear receiving groove 111 of the tooling pallet 110.

[0020] There is a height gap between the receiving plate 330 and the support plate 310. The receiving plate 330 is provided with a push-out mechanism 350, which is used to push out the counting teeth that fall onto the receiving plate 330. Specifically, the middle part of the receiving plate 330 is a hollow structure, that is, the receiving plate 330 is a ring structure, and is provided with a mounting frame 331, as shown in the figure. The mounting frame 331 is generally arranged along the diameter direction of the receiving plate 330 and fixed to the lower side of the receiving plate 330. The push-out mechanism 350 is fixed to the mounting frame 331 and includes a push plate 351, a cylinder A352 for driving the radial extension and retraction of the push plate 351, and a motor 353 for driving the circumferential rotation of the push plate 351.

[0021] In this embodiment, cylinder A352 is a slide cylinder, motor 353 is a servo motor, and a reducer 370 is configured. As shown in the figure, the output end of the reducer is vertically arranged and concentrically arranged with the receiving plate 330. A bushing is installed on it, and a pusher mounting plate 380 is fixedly installed on the top of the bushing. Cylinder A352 is fixed to the pusher mounting plate 380 and is arranged along the diameter direction of the receiving plate 330.

[0022] The gear cylinders 320 are arranged in a ring array in pairs. The receiving plate 330 has ribs 332 on both sides corresponding to each gear cylinder 320. Two adjacent ribs 332 form a counting tooth limiting groove. The counting tooth limiting groove is roughly fan-shaped. The width of the pusher plate 351 is adapted to the minimum width of the inner side of the counting tooth limiting groove. The front end of the pusher plate 351 has a chamfered structure. The pusher plate 351 has limiting shoulders 3510 on both sides.

[0023] In addition, to better ensure the stability of the gear cylinder 320 and facilitate replacement, a protective cover 390 is provided on the gear-fitting frame 360. The protective cover 390 also has round holes that correspond one-to-one with the gear cylinder 320. After passing through the round holes on the protective cover 390, the gear cylinder 320 is supported in the stepped through hole on the support plate 310, so as to realize the movable setting of the gear cylinder 320 and ensure its stability and prevent deviation.

[0024] In this application, the primary calibration station 200 is designed as a single-head, double-acting structure. Therefore, to improve testing efficiency, a secondary front conveyor line A140 is provided on one side of the main front conveyor line 120, corresponding to the position of the primary calibration station 200. A secondary front conveyor line B150 is provided at the position corresponding to the recalibration station 400 and the airtightness testing station 500. There are at least two recalibration stations 400 and 500, which are staggered on the main front conveyor line 120 and the secondary front conveyor line B150. A space is left between the secondary front conveyor lines A140 and B150, which corresponds to the manual handling station and forms the manual handling area 160. Corresponding to the position of the manual handling area 160, a transverse movement device B is provided between the main front conveyor line 120 and the return line 130. This device is mainly used to transport the non-conforming products returned from the return line 130 to the manual handling station for timely manual handling.

[0025] refer to Figures 1 to 4 The initial calibration platform 200 includes an initial calibration frame 210 covering the main feed line 120 and the secondary feed line A140. The initial calibration frame 210 has a longitudinal beam 211 parallel to the main feed line 120. The longitudinal beam 211 has a ventilation tooling connector 220 arranged along its length for connecting with the inlet and outlet pipe connectors of the meter to be tested for flow detection. The longitudinal beam 211 is movably supported on the initial calibration frame 210 via an optical axis 212 and is equipped with a drive mechanism 230. The optical axis 212 is arranged along the width direction of the initial calibration frame 210. The drive mechanism 230 drives the longitudinal beam 211 to move between the main feed line 120 and the secondary feed line A140, and to stop directly above either of them. In this embodiment, the drive mechanism 230 is a rodless cylinder.

[0026] refer to Figures 9 to 12 In this application, the airtightness testing station 500 is a dry airtightness testing station, mainly including a testing frame 510, and a propulsion mechanism 520 and an airtightness expansion mechanism 530 set on the testing frame 510. The propulsion mechanism 520 and the airtightness expansion mechanism 530 are respectively located on both sides of the conveyor line 100. The airtightness expansion mechanism 530 includes a fixed plate 531 and a movable plate 532 arranged opposite each other, and a cylinder B533 for driving the movable plate 532 to move closer to and away from the fixed plate 531. The fixed plate 531 is provided with a fixed seat 534, and the movable plate 532 has a movable seat 535 that corresponds to the fixed seat 534. A hollow inflation rod 536 is connected to the movable seat 535. The two ends of the inflation rod 536 are open, and the head end is provided with an expansion ring 537. The expansion ring 537 is made of rubber or silicone.

[0027] As shown in the figure, cylinder B533 is fixed to the testing frame 510 via cylinder mounting plate 540. Fixed plate 531 is fixedly connected to cylinder mounting plate 540 via support rod 538. Two movable seats 535 are provided on each movable plate 532, and two fixed seats 534 are provided on the same fixed plate 531. There are also two inflation rods 536, corresponding to the air inlet pipe connector and air outlet pipe connector of the instrument body. Movable seats 535 are movably engaged with movable plates 532. Movable seats 535 have internal threaded holes. Inflation rods 536 are threadedly connected to movable seats 535. A sealing connection block 539 is provided at the open end of the internal threaded hole of movable seat 535 to seal the connection position between inflation rod 536 and movable seat 535. Movable seats 535 have pipeline connection holes 5350 that communicate with the internal threaded holes. Pipelines are connected through pipeline connection holes 5350 to facilitate gas filling or discharge.

[0028] The fixed base 534 and the fixed plate 531 are detachably fixedly connected. The fixed base 534 has a through hole for the inflation rod column to pass through. The head end of the inflation rod 536 has a stop part 5360, the diameter of which is larger than the diameter of the main body. When the piston rod of the cylinder B533 retracts, the inflation rod 536 and the fixed base 534 move relative to each other. The two sides of the expansion ring 537 are squeezed by the fixed base 534 and the stop part 5360, and expand circumferentially, so as to tighten and seal with the air inlet pipe joint and air outlet pipe joint of the instrument body.

[0029] To further improve reliability and ensure that the air inlet and outlet connectors of the instrument body can be quickly aligned and inserted with the inflation rod 536, the interior of the fixed base 534 near the propulsion mechanism 520 is flared to provide a guiding function. Furthermore, to enhance product adaptability, both the movable base 535 and the fixed base 534 employ a slotted hole mounting structure to facilitate quick adjustment of the center distance between the two inflation rods 536.

[0030] In this embodiment, the pushing mechanism 520 mainly includes a pushing rod 521 and a pushing cylinder 522. The pushing rod 521 can push the meter body at the testing station forward to connect with the corresponding inflation rod 536. Typically, a push-out reset mechanism is also provided on the same side of the airtight expansion mechanism 530. The structure of the push-out reset mechanism is similar to that of the pushing mechanism 520, and will not be described in detail here. It is mainly used to push the meter body after testing backward to reset it to its initial state. During installation, it should avoid interference from the airtight expansion mechanism 530.

[0031] It is important to note that, for better sealing testing, the watch body is tested in a flat position. However, since the watch body is in a vertical position during initial and recalibration, a testing buffer area is set between the recalibration station and the airtightness testing station. A robotic arm is positioned in the corresponding location of this testing buffer area to adjust the watch body's posture from vertical to flat. Based on this, the tooling tray 110 of this application is designed as a dual-purpose structure. Near the center of the tray's bottom, there is a recess 112 that adapts to the bottom of the watch body when it is vertical. The tooling tray 110 has openings on both sides to facilitate flat placement of the watch body. Simultaneously, limiting slots 113 are provided on both sides of the longitudinal direction, corresponding to the sealing ring position in the middle of the watch body. When the watch body is flat, the sealing ring falls into the limiting slots 113, which can provide a certain limiting effect, ensuring the stability of the subsequent handling posture. Furthermore, the gear receiving slot 111 is located on one side of the tooling tray 110 in the width direction, near the end, making it easier for manual removal of the gear pair inside for installation.

[0032] In addition, to fully improve the overall detection efficiency, a preliminary calibration buffer area is set at the front end of the main front conveyor line 120 and the auxiliary front conveyor line A140, and a recalibration buffer area is set at the front end of the auxiliary front conveyor line B150 and near the recalibration table of the main front conveyor line 120. An intermediate transverse movement device C is provided in both the detection buffer area and the recalibration buffer area to facilitate the dynamic distribution and feeding of the table bodies on each conveyor line through the control system.

[0033] Based on the aforementioned automated test line for table generation, this application also proposes an automated test method for table generation. It should be noted that in this embodiment, the automated test line for table generation typically works in conjunction with a host computer, a PLC controller, and a MES system to complete the testing. The MES system can also be other similar systems, and the process is as follows: S1, the test meter is placed on the tooling tray 110 at the receiving station, and then transported to the binding station. The tooling tray 110 is bound to the test meter on it by the RFID scanning device, and then transported to the initial calibration buffer area in sequence.

[0034] S2, the tooling tray 110 loaded with the meter to be tested enters the testing area of ​​the primary calibration platform 200 in the primary calibration buffer area according to the release command of the blocking cylinder controlled by the PLC. It alternates between the main feed line 120 and the auxiliary feed line A140. The ventilation tooling connector 220 on the primary calibration platform 200 switches positions to complete the primary calibration. During this process, because the primary calibration platform 200 is a single-head double-acting machine, when the corresponding meter body on the main feed line 120 is tested, the meter bodies that have been tested on the auxiliary feed line A140 are released one by one to the next process. At the same time, the meter body entering the auxiliary feed line A140 is completed. After the meter body on the main feed line 120 has completed the test, the longitudinal beam 211 moves laterally to the position facing the auxiliary feed line A140, so that the dual-line cyclic testing can be performed.

[0035] When the meter body enters the initial calibration platform, the RFID equipment on the conveyor line reads the tooling pallet code of the corresponding line one by one. Based on the shell code bound to the pallet code (which also contains quality information from previous production processes such as the movement assembly and meter water testing), the information of the meter body at each station on the dual lines of the initial calibration platform is obtained. If the meter body has not been inspected after the tooling pallet is in place, or if the dual-line meter body inspection is completed, the machine head moves into position, and the station top platform lifts the tooling pallet and meter body until they are pressed against the venting tool connector. After all are pressed in place, the host computer writes the corresponding meter body shell code information for each station into the supporting error detection software. The software then automatically performs inspection according to the production order settings (e.g., G1.6, G2.5, G4). After inspection, the supporting inspection software will determine the flow rate (Q) based on the inspection results. min 0.2Q max Q max The software calculates the gear matching data and gives a qualified or unqualified conclusion based on the gear matching calculation results, error range, and other conditions. At the same time, the test data is uploaded to the MES system in real time. Throughout the entire testing process, the host computer identifies which step of the testing process has been completed through the software and controls the supporting software to perform the next step.

[0036] S3, after the initial calibration, the completed form is transferred to the gear matching station of the automatic gear matching equipment 300. After the RFID device at the gear matching station reads the tooling pallet information, the host computer queries the MES system according to the corresponding form information to obtain the gear matching data (if it is unqualified, it is manually judged whether to return it to the receiving station). The automatic gear matching equipment 300 finds the corresponding counting gear according to the gear matching data, that is, finds the corresponding gear pair (different gear pairs correspond to different gear matching error values), and automatically drops it into the gear receiving slot 111 on the corresponding tooling pallet 110.

[0037] S4, the completed meter is transferred to the corresponding manual processing area 160 for manual assembly and installation of the gear pair and other accessories such as internal magnets and worm gears. After assembly, the manual installer installs the gear pair and related components in the corresponding positions on the counter and meter body. After the manual installation is completed, the meter body is released to the next step by operating the stop cylinder control button.

[0038] S5, the meter with gear pair installed is transferred to the testing area of ​​the recalibration station 400. The meter body information is obtained by RFID identification, then testing is carried out, error data is uploaded, and qualified and unqualified meter bodies are distinguished at the same time.

[0039] The process is similar to the initial calibration. Specifically, the meter body flows to the recalibration buffer area. When the meter body enters the detection area of ​​the recalibration station, the RFID device on the corresponding conveyor line reads the tooling pallet code one by one. Based on the shell code bound to the pallet code, the information of the meter body entering each station of the recalibration station is obtained. If the meter body has not been detected after the tooling pallet is in place, the station top platform drives the tooling pallet and meter body to rise until they are pressed against the air vent connector of the machine head. After all are pressed in place, the host computer writes the shell code information of the meter body at each station into the matching error detection software and controls the software to perform automatic detection according to the production order settings (such as G1.6, G2.5, G4). After the detection is completed, the detection software will determine the flow rate point (such as 0.2Q) according to the detection plan. max Q max The error value is calculated from the image sampling data, and qualified and unqualified table bodies are determined according to the error range of the detection scheme. The relevant error detection data is uploaded to the MES system in real time.

[0040] S6. After calibration, the completed meters are transferred to the testing area of ​​the airtightness testing station 500. Again, the meter information is obtained through RFID identification, and then airtightness testing is performed. Specifically, the calibrated meters are sequentially released to the testing buffer area. A robot rotates the meter 90 degrees and places it on the corresponding tooling tray. The meter is then transported to the corresponding RFID reading position on the airtightness testing station 500. The RFID scanning device reads the tooling tray code one by one. Based on the shell code bound to the tray code, the shell code information of the meter entering each station on the airtightness testing station 500 is obtained. After the tooling tray is in place, the station top platform drives the tooling tray and meter to rise and move into position. Then, the propulsion mechanism 520 at the rear of the meter pushes the meter so that the pipe joint (inlet / outlet air pipe joint) is inserted into the corresponding airtightness tightening mechanism 530. Next, the airtightness tightening mechanism 530 operates, and the tightening ring begins to expand inside the meter pipe joint, achieving sealing and relative fixation. At this point, the propulsion mechanism 520 retracts and resets, and the PLC command controls the airtightness testing platform 500 to start working, that is, to control the corresponding pipeline valves and mechanisms to perform actions according to the process of inflation → balancing → testing → venting. Finally, the meter body is pushed back to the initial state by the push-out reset mechanism, and then the push-out reset mechanism resets itself. Finally, the top platform descends into place and the meter bodies are released one by one to flow to the next sequence.

[0041] S7, after the airtightness test is completed, the meter is taken off the line. The pallet information is identified by the RFID device at the end of the line, and various test information is obtained through the MES system, namely the results of recalibration and dry airtightness. The meter body on the tooling pallet 110 is comprehensively judged. If it is a qualified product, it waits for the meter to be picked up by a person or robot before the empty tooling pallet 110 is released. If it is a non-qualified product, it is directly released and returned to the manual processing area 160 for further processing by a person.

[0042] Throughout the process, starting from receiving the meter body and binding the shell code, the PLC dispatches it to the initial calibration station → the host computer controls the initial calibration test and uploads the data to the MES system. After querying the gear matching data stored in the MES system, the host computer sends it to the automatic gear matching equipment → after gear matching is completed, the PLC dispatches it to the recalibration station, and the host computer controls the test and data upload again → the PLC dispatches it to the dry airtight station, and the host computer controls the airtightness test and uploads the data → after the meter body is taken off the line, the host computer queries the MES system and gives a comprehensive conclusion, and the PLC dispatches it for sorting (passive release, non-passive sorting). This allows for full-process tracking of the meter body, and the operation process is standardized, which helps to improve testing efficiency and the consistency of test results.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. An automated test line for table generation, characterized in that: It includes a conveyor line (100) having a tooling tray (110) adapted thereto, and a primary calibration table (200), an automatic gear matching device (300), a recalibration table (400) and an airtightness testing table (500) arranged sequentially along the conveyor line (100). The initial end of the conveyor line (100) has a receiving station and a binding station, wherein the binding station is equipped with an RFID scanning device for binding the tooling tray (110) to the test table placed thereon. The primary calibration platform (200) is a single-head double-acting structure, and the tooling tray (110) has a gear receiving groove (111).

2. The automated test line for table generation according to claim 1, characterized in that: The automatic gear matching device (300) includes a support plate (310) having annularly distributed through holes for supporting a gear cylinder (320) for storing counting gears. The bottom of the support plate (310) has a receiving plate (330) covering all the through holes, and a receiving funnel (340) located circumferentially outside the receiving plate (330). The upper diameter of the receiving funnel (340) is D1, and the diameter of the receiving plate (330) is D2. The difference between diameter D1 and diameter D2 is greater than the diameter of the largest counting gear. There is a height gap between the receiving plate (330) and the support plate (310). The receiving plate (330) is provided with a push-out mechanism (350), which is used to push out the counting teeth that fall onto the receiving plate (330).

3. The automated test line for table generation according to claim 2, characterized in that: The receiving plate (330) has a hollow structure in the middle and is provided with a mounting frame (331). The pushing mechanism (350) is fixed on the mounting frame (331) and includes a pusher plate (351), a cylinder A (352) for driving the pusher plate (351) to extend and retract radially, and a motor (353) for driving the pusher plate (351) to rotate circumferentially.

4. The automated test line for table generation according to claim 3, characterized in that: Two gear cylinders (320) in the radial direction are arranged in pairs in a ring array. The receiving plate (330) has ribs (332) on both sides corresponding to each group of gear cylinders (320). Two adjacent ribs (332) form a counting tooth limiting groove. The pusher plate (351) has limiting shoulders (3510) on both sides.

5. The automated test line for table generation according to claim 1, characterized in that: The conveyor line (100) includes a front conveyor main line (120) and a return line (130) arranged in parallel. The front conveyor main line (120) and the return line (130) are equipped with a tray transverse movement device A at their respective starting and ending points. On one side of the main feed line (120), a secondary feed line A (140) is provided at the position corresponding to the initial calibration station (200), and a secondary feed line B (150) is provided at the position corresponding to the recalibration station (400) and the airtightness testing station (500). There are at least two recalibration stations (400) and airtightness testing stations (500), which are staggered on the main feed line (120) and the secondary feed line B (150).

6. The automated test line for table generation according to claim 5, characterized in that: There is a space between the front feed line A (140) and the front feed line B (150), which forms a manual processing area (160). Corresponding to the position of the manual processing area (160), there is a transverse movement device B between the front feed line (120) and the return line (130).

7. The automated test line for table generation according to claim 5 or 6, characterized in that: The primary calibration platform (200) includes a primary calibration frame (210) covering the main feed line (120) and the secondary feed line A (140). The primary calibration frame (210) has a longitudinal beam (211) arranged parallel to the main feed line (120). The longitudinal beam (211) has a ventilation tooling joint (220) arranged along its length. The longitudinal beam (211) is movably supported on the primary calibration frame (210) and is equipped with a drive mechanism (230) for driving the longitudinal beam (211) to move between the main feed line (120) and the secondary feed line A (140) and to stop directly above either one.

8. The automated test line for table generation according to any one of claims 1 to 6, characterized in that: The airtightness testing station (500) is a dry airtightness testing station, including a testing frame (510), and a propulsion mechanism (520) and an airtightness tightening mechanism (530) disposed on the testing frame (510). The propulsion mechanism (520) and the airtightness tightening mechanism (530) are respectively located on both sides of the conveyor line (100). The airtight expansion mechanism (530) includes a fixed plate (531) and a movable plate (532) facing each other, and a cylinder B (533) for driving the movable plate (532) to move closer to and away from the fixed plate (531). The fixed plate (531) is provided with a fixed seat (534), and the movable plate (532) has a movable seat (535) that corresponds to the fixed seat (534). A hollow inflation rod (536) is connected to the movable seat (535), and an expansion ring (537) is provided at the head end of the inflation rod (536).

9. An automated testing method for generating tables, characterized in that, The automated test line for tabulation as described in any one of claims 1 to 8 is used, and the following steps are performed: S1, the meter to be tested is placed on the tooling tray (110) at the receiving station, and then transported to the binding station. The tooling tray (110) is bound to the meter to be tested on it by the RFID scanning device. S2, the tooling tray (110) loaded with the test table enters the testing area of ​​the primary calibration table (200) in turn through the main feed line (120) and the secondary feed line A (140), and the ventilation tooling connector (220) on the primary calibration table (200) switches positions to complete the primary calibration; S3, the completed table is transferred to the gear matching station of the automatic gear matching equipment (300). The automatic gear matching equipment (300) identifies and obtains the gear matching data according to RFID, finds the corresponding counting gear, and puts it into the gear receiving slot (111) on the tooling tray (110). S4, the completed gear assembly is transferred to the corresponding manual processing area (160) for manual installation of the gear pair; S5, the assembled meter with gear pair is transferred to the testing area of ​​the recalibration station (400), the meter body information is obtained according to RFID identification, then the test is carried out, and the error data is uploaded, while distinguishing between qualified and unqualified meter bodies; S6, the completed table is transferred to the testing area of ​​the air tightness testing station (500), where the table body information is obtained by RFID identification and then the air tightness test is performed. S7, the meter is taken off the line after the air tightness test is completed. The meter is identified by RFID at the end of the line and various test information is obtained. The meter on the tooling pallet (110) is comprehensively judged. If it is a qualified product, it waits for the manual or robotic arm to grab the meter before releasing the empty tooling pallet (110). If it is an unqualified product, it is directly released and returned to the manual processing area (160).

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