Method for the automated production of diaphragm gas meters

Abstract

The application discloses a kind of membrane gas meter automation production method, comprising the following steps: using metering shell punch press to carry out metering shell stamping forming;The metering shell of stamping forming is continuously batched and turned to concave cavity upwards, and batched glue coating operation is carried out;Then the metering shell formed with sealing rubber ring is placed on special tray;Diaphragm and the assembled folding plate in movement core body, diaphragm four corners are hung in the hanging point of movement core body four corners;Diaphragm is positioned, so that membrane cavity depth reaches design depth;From the special tray equipped with finished metering shell, metering shell is grabbed and buckled to movement core body, and the rivet tooth of metering shell is pre-pressed by metering shell pre-pressing structure, and in the pre-pressing process, diaphragm depth remains unchanged.Mainly from metering shell production to the forming of sealing rubber ring, and with movement core body three process steps are started, improve the continuity between each step, and control each step completion quality and efficiency, so as to improve the overall production quality and efficiency of membrane table.

Description

Technical Field

[0001] This invention belongs to the field of gas meter manufacturing equipment, and specifically relates to an automated production method for diaphragm gas meters. Background Technology

[0002] The meter housing is a crucial component of diaphragm gas meters, and its production and assembly efficiency directly impacts the overall production efficiency of the meter. The meter housing is typically manufactured using a stamping process. Both the gas meter movement and the meter housing have sealing surfaces. After the main body is formed, a sealing strip is installed on the inner side of the meter housing to further improve the sealing of the diaphragm cavity. Traditionally, this involves directly bonding a pre-made sealing ring or transferring the meter housing to an adhesive applicator for on-site adhesive application to form a ring-shaped sealing strip. Both processes increase the need for transporting and independently supplying the meter housing, significantly reducing production efficiency, increasing space requirements, and hindering rapid mass production of the meter housing.

[0003] After the meter housing is manufactured, the assembly process between the meter housing and the movement body begins. During this assembly, the seal is primarily formed by the contact between the molded rubber ring and the edge of the diaphragm. Simultaneously, the meter housing presses the diaphragm edge to secure it. The applicant's research revealed that the depth of the diaphragm cavity directly affects metering accuracy, and the initial fixing position of the diaphragm during installation directly influences the volume of the cavity. Furthermore, the uniformity of the contact area between the diaphragm and the movement body directly affects the rotational friction of the rocker arm. The sealing condition between the meter housing's sealing rubber ring and the diaphragm also affects the sealing quality of the meter housing. In summary, the meter housing assembly process plays a crucial role in the gas meter assembly process. In existing technologies, the meter housing assembly is mostly performed manually by lifting the folding plate connected to the rocker arm before pressing the meter housing in place, i.e., manually adjusting the diaphragm cavity depth. This method is inefficient and results in poor product consistency, severely impacting the quality of the gas meter.

[0004] Based on the above issues, and considering that the molding cycle of the meter housing and the pre-pressing cycle of the movement body account for a large proportion of the entire production cycle of the diaphragm gas meter, and that the quality of the rubber ring on the meter housing and the contact position between the sealing rubber ring and the diaphragm during the pre-pressing process also directly affect the quality of the diaphragm meter, the applicant has made further improvements to the production and assembly process of the meter housing. Summary of the Invention

[0005] In view of this, the present invention provides an automated production method for diaphragm gas meters to solve the problems of low efficiency in the production and assembly process of meter housings in the prior art, which affects the overall production efficiency and quality of the meter.

[0006] The technical solution is as follows: An automated production and assembly line for diaphragm gas meters, the key of which includes the following steps: S1, Metering shell is stamped using a metering shell punch press; S2, continuously flip the stamped metering shells in batches until the concave cavity faces upward, and perform batch glue application; S3, then place the metering shell with the sealing ring onto a special tray; S4, assemble the diaphragm with the folding plate installed in the movement body, and suspend the diaphragm at the suspension points at the four corners of the movement body; S5, Position the diaphragm to achieve the designed depth of the membrane cavity; S6: The metering shell is picked up from a special tray containing finished metering shells and fastened to the core body. The rivet teeth of the metering shell are pre-pressed by the metering shell pre-pressing structure, and the diaphragm depth remains unchanged during the pre-pressing process.

[0007] By adopting the above scheme, the three steps of metering shell stamping, metering shell sealing ring forming, and metering shell and movement pre-pressing are effectively combined in the production process of metering shell, providing process continuity and thus improving the production efficiency of metering shell finished products. At the same time, positioning the diaphragm during the pre-pressing process helps to improve the quality of the finished diaphragm.

[0008] Preferably, in step S2, a transfer module is used to continuously flip the metering shells in batches and send them to the batch gluing device for batch gluing. Using a transfer module for automatic flipping of the metering shells allows them to quickly enter the gluing device from the punch press, eliminating intermediate manual transfer and flipping steps, which is beneficial for mass production and further improves the production efficiency of the metering shells.

[0009] Preferably, the sealing ring of the metering shell is a rectangular closed loop, including a short side and a long side, where the length of the short side is 'a'. During the adhesive application process in step S2, adhesive application begins from a position near the middle of the short side, with the adhesive amount increasing linearly until a stable adhesive amount Q is reached within the stroke L. When the adhesive application reaches the initial spraying position, the adhesive amount decreases linearly, reducing to zero within the stroke L, where L ≤ a / 2. Using this scheme, the appropriate adhesive amount is ensured while increasing the connection length through linear increases and decreases within the stroke L, which helps improve the connection quality and prevent cracks, thus improving the quality of the sealing ring. Preferably, the sealing ring of the metering shell is a rectangular closed loop, including a short side and a long side, with a rounded chamfer section between the short and long sides. During the adhesive application process in step S2, adhesive is applied from the middle position of the rounded chamfer section with a stable amount of adhesive Q. Adhesive application stops when the closed loop returns to the initial spraying position. Using this scheme, the centripetal force of the rounded chamfer section effectively enhances the contact strength at the contact point, which also helps improve the quality of the sealing ring.

[0010] As a preferred option, in step S2, after the adhesive is applied, the metering shell is dried. This method accelerates the solidification of the adhesive ring, reduces or avoids deformation caused by shaking during transport, and ensures that the sealing ring has good molding quality.

[0011] As a preferred option, in step S2, the metering shell is positioned and fixed during the adhesive application process. This approach ensures the consistent position of the metering shell, allowing for precise alignment with the adhesive application device, while also reducing the impact of device vibration on the adhesive application quality.

[0012] Preferably, in step S5, a diaphragm positioning module is used to position the diaphragm. The diaphragm positioning module includes a guide rod and a rod drive mechanism for driving the guide rod to extend and retract horizontally. In step S5, the guide rod extends horizontally into the movement body from the window on the front side of the movement body under the drive of the rod drive mechanism. This solution facilitates automated adjustment operations and further improves production efficiency.

[0013] As a preferred option, in step S6, the metering shell is enlarged before being fastened to the movement body. This method ensures a better fit between the metering shell and the movement body, preventing the rivet teeth from getting caught.

[0014] As a preferred embodiment: In step S6, the metering shell pre-compression structure includes pre-compression cylinder A and pre-compression cylinder B corresponding to the front and rear sides of the core body, and the piston rod ends of the pre-compression cylinder A and pre-compression cylinder B are respectively connected to rivet head A and rivet head B. During the pre-pressing process, the pre-tightening force provided by the pre-pressing cylinder B is greater than that of the pre-pressing cylinder A. When both riveting heads A and B are in contact with the riveting teeth of the metering housing, riveting head B remains stationary. This design ensures the overall stability of the movement during pre-pressing, preventing back-and-forth swaying and improving the reliability of the pre-pressing operation.

[0015] Preferably, in step S6, at least the rivet teeth at both ends along the length of the metering shell are pre-pressed, and the tilt angle of the rivet teeth after pre-pressing is greater than or equal to 45°. This method provides a better pre-pressing effect and prevents the metering shell from loosening before all the rivet teeth are properly riveted.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The automated production method for diaphragm gas meters provided by this invention mainly focuses on three process steps: production of the metering shell, molding of the sealing ring, and assembly with the core body. This improves the continuity between each step and controls the quality and efficiency of each step, thereby improving the overall production quality and efficiency of the diaphragm meter. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the metering shell production line structure in this invention; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the transfer module structure; Figure 4 This is a side view of the transfer module; Figure 5 This is a schematic diagram of the feeding mechanism. Figure 6 This is a schematic diagram of a batch adhesive coating device. Figure 7 This is a schematic diagram of the material guide frame structure; Figure 8 This is a schematic diagram of the adhesive coating conveyor line structure; Figure 9 for Figure 6 Enlarged view of a portion of point A in the middle; Figure 10 Schematic diagram of the working state of stop mechanism A; Figure 11 This is a schematic diagram showing the metering shell in the glue application station. Figure 12 A schematic diagram of the station positioning structure for the metering shell; Figure 13 Schematic diagram of stop mechanism A; Figure 14 Schematic diagram of stop mechanism B; Figure 15 This is a schematic diagram of the workstation switching mechanism. Figure 16 for Figure 15 Bottom structure diagram; Figure 17 This is a schematic diagram of the moving unit structure of the glue gun; Figure 18 This is a schematic diagram of the pallet loading and unloading module structure; Figure 19 for Figure 18 Axonometric drawing; Figure 20 A schematic diagram of the pallet transfer line and pallet fixing components installation; Figure 21 A schematic diagram of the pallet transfer line and pallet securing components. Figure 22 Schematic diagram of the unused pallet gripper assembly; Figure 23 for Figure 22 Axonometric drawing; Figure 24 This is a schematic diagram of the gripper base A structure; Figure 25 This is a schematic diagram of the gripper base B structure; Figure 26 This is a schematic diagram of the gripper base C structure; Figure 27 A schematic diagram of the working mechanism of the gripper C; Figure 28 This is a schematic diagram of the pallet structure; Figure 29 This is a schematic diagram of the bottom structure of the tray. Figure 30 This is a schematic diagram of the pre-compression line structure of the metering shell of the present invention; Figure 31 for Figure 30 Top view; Figure 32 This is a top view of the structure above workbench C; Figure 33A 3D view of the diaphragm positioning module; Figure 34 This is a top view (33). Figure 35 A side view of another embodiment of the positioning rod; Figure 36 A three-dimensional diagram of the metering shell gripper assembly; Figure 37 for Figure 36 Axonometric drawing; Figure 38 A partial enlarged view of the mounting base fixing structure, the mechanism body fixing structure, the diaphragm positioning module, and the metering shell pre-compression structure; Figure 39 for Figure 38 The front view; Figure 40 This is a schematic diagram of the metering shell adjustment module structure; Figure 41 for Figure 40 Front view; Figure 42 This is a schematic diagram of the tooth expander seat structure. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] refer to Figures 1 to 42 The automated production method for diaphragm gas meters shown mainly includes the following steps: Step S1, stamping the metering shell using a metering shell punch press 100; Step S2, continuously flipping the stamped metering shells in batches until the concave cavity faces upwards, and performing batch gluing operations; Step S3, then placing the metering shells with sealing rings onto a special tray; Step S4, assembling the diaphragm with the folding plate installed inside the mechanism, with the four corners of the diaphragm suspended at the four corner suspension points of the mechanism; Step S5, positioning the diaphragm so that the diaphragm cavity depth reaches the designed depth; Step S6, grabbing the metering shell from the special tray containing the finished metering shells and fastening it onto the mechanism, and pre-pressing the rivet teeth of the metering shell through the metering shell pre-pressing structure, while maintaining the diaphragm depth during the pre-pressing process. To improve process continuity, in step S2, a transfer module 300 is used to continuously flip the metering shells in batches and send them to a batch gluing device 200 for batch gluing operations.

[0020] The automated production method for diaphragm gas meters in this application mainly relies on an automated production and assembly line for diaphragm gas meters, as shown in the figure. The automated production and assembly line for diaphragm gas meters mainly includes a meter housing production line and a meter housing pre-pressing line. The meter housing production line is mainly used to complete the stamping and forming of the meter housing and the forming of the sealing ring, while the meter housing pre-pressing line is mainly used for pre-tightening the meter housing and the core body, which plays a role in initially fixing the diaphragm and facilitating the next step of fully pressing and fixing.

[0021] As shown in the figure, the metering shell production line in this application mainly includes a metering shell punching press 100, a batch gluing device 200, a transfer module 300, and a pallet loading and unloading module arranged in sequence. The transfer module 300 can flip the metering shells sent from the metering shell punching press 100 with the concave cavity facing down, so that they enter the batch gluing device 200 with the concave cavity facing up for gluing operation. The pallet loading and unloading module includes a pallet supply unit 400 and a pallet transfer unit 500 arranged corresponding to the batch gluing device 200. The metering shell pre-compression line includes a metering shell pre-assembly station and a metering shell pallet stacking station, as well as a diaphragm positioning module 700, a metering shell gripping and releasing mechanism 800, and a metering shell pre-compression structure set up corresponding to the metering shell pre-assembly station. The diaphragm positioning module 700 is used to adjust the depth of the diaphragm cavity in the core body. The metering shell gripping and releasing mechanism 800 is used to grip the metering shell and fasten it to the core body. The metering shell pre-compression structure is used to pre-compress the metering shell on the core body. The metering shell pallet stacking station is used to receive the pallet containing the metering shell transferred from the pallet transfer unit 500.

[0022] like Figures 1 to 29 As shown, the metering shell punch press 100 has a discharge port 110 for the metering shells to be punched out, and the batch coating device 200 includes multiple coating conveyor lines 210 and a coating mechanism 220 corresponding to the coating conveyor lines 210.

[0023] The transfer module 300 is located between the metering shell punching machine 100 and the batch gluing device 200. It includes a transfer conveyor line A310, a transfer conveyor line B320, and a feeding mechanism 330. A flipping mechanism 340 is provided between the transfer conveyor lines A310 and B320. Specifically, the transfer conveyor line B320 has a first receiving end and a first discharging end, and a second receiving end that protrudes to the outside of the first discharging end. The flipping mechanism 340 is located between the first discharging end and the second receiving end. The transfer conveyor line A310 is used to receive the metering shells sent from the discharge port 110. After being flipped by the flipping mechanism 340, the metering shells enter the transfer conveyor line B320 with their concave cavities facing upwards. The feeding mechanism 330 sends the metering shells located on the transfer conveyor line B320 to the gluing conveyor line 210.

[0024] Key reference Figures 1 to 5 The transfer module 300 mainly includes a workbench A350, and transfer conveyor lines A310 and B320 are both horizontally mounted on the workbench A350 via a frame A351. In this embodiment, both are belt conveyors, and transfer conveyor line B320 is located directly below transfer conveyor line A310. The first discharge end of transfer conveyor line A310 is a ramp section 311, and the tilting mechanism 340 is set corresponding to the ramp section 311.

[0025] As shown in the figure, the flipping mechanism 340 includes a stop plate 341 and at least one retaining block 342. The stop plate 341 corresponds to the lower end of the ramp section 311, and the vertical distance between it and the end of the ramp section 311 is less than half the width of the metering shell and greater than the thickness of the metering shell. The at least one retaining block 342 corresponds to the upper end of the ramp section 311 and is rotatably disposed directly above the upper end of the ramp section 311. The vertical distance between the retaining block 342 and the upper end of the ramp section 311 is less than the thickness of the metering shell. In this embodiment, the inclination angle of the ramp section 311 is less than or equal to 45° to ensure good adhesion between it and the conveying surface and prevent skewing.

[0026] Specifically, the top of the frame A351 has a fixed support frame 352, which is arranged along the width direction of the transfer conveyor line A310 and located above the transfer conveyor line A310. The holding block 342 is suspended on the support frame 352 by a hook 353. The hook 353 can rotate relative to the support frame 352, and the holding block 342 can rotate relative to the hook 352. The two relative rotation planes are parallel to each other, and the rotation planes are perpendicular to the conveying surface of the transfer conveyor line A310. In this embodiment, there are two holding blocks 342, one of which is set at the upper end of the ramp section 311, and the other is set at the middle of the ramp section 311.

[0027] The stop plate 341 is located directly in front of the lower end of the ramp section 311. The transfer conveyor line B320 is slightly longer at one end of the ramp section 311, ensuring that the metering shell falling from the gap between the stop plate 341 and the ramp section 311 can land on the transfer conveyor line B320. The transfer conveyor line B320 and the transfer conveyor line A310 have opposite conveying directions. Thus, the metering shell (with the cavity facing down) conveyed from its horizontal section into the ramp section 311 on the transfer conveyor line A310 is restricted by the holding block 342 and can basically maintain its posture in contact with the conveying surface. Then, under the action of the stop plate 341, its lower side in the length direction contacts the transfer conveyor line B320 at a slightly inclined angle. Due to the inertia of the transfer conveyor line B320, its upper side falls backward. At this time, the cavity of the metering shell faces upward, thus realizing the flipping of the metering shell.

[0028] In this embodiment, the feeding mechanism 330 is located on one side of the width direction of the transfer conveyor line B320. It mainly includes a base plate 331, a mounting frame 332 supported on the base plate 331, a feeding frame 333 movably arranged on the mounting frame 332, and a feeding cylinder 334 connected to the feeding frame 333. The feeding frame 333 has a pusher plate 335 arranged perpendicular to the length direction of the transfer conveyor line B320. The feeding cylinder 334 is used to drive the feeding frame 333 to move closer to or away from the transfer conveyor line B320. During installation, the feeding mechanism 330 is fixed to the workbench A350 by the base plate 331.

[0029] In practice, the mounting bracket 332 is movably supported on the base plate 331, and a vertical guide structure is provided between the two. A height adjustment cylinder 336 is provided on the base plate 331, with its piston rod facing upward and connected to the mounting bracket 332. In this way, the overall height of the mounting bracket 332 can be adjusted by the height adjustment cylinder 336.

[0030] The feeding rack 333 and the mounting frame have a horizontal guide structure, and the guide direction is perpendicular to the conveying direction of the transfer conveyor line B320. The pusher plates 335 on the feeding rack 333 are distributed at intervals. At the same time, the frame A351 is provided with a feed alignment plate 337 and multiple feed sensor seats 338 corresponding to the transfer conveyor line B320. The feed alignment plate 337 is mounted on the transfer conveyor line B320 and is relatively far away from the inclined section 311, that is, the feed alignment plate 337 corresponds to the transfer conveyor line B320 away from the second receiving end. At one end, the feeding sensor seat 338 and the pusher plate 335 are arranged in a one-to-one correspondence. The feeding alignment plate 337 and multiple feeding sensor seats 338 are equipped with material sensors to detect whether there is a metering shell at the corresponding position on the transfer conveyor line B320. When the metering shells are transferred to the transfer conveyor line B320 in sequence, when the first metering shell abuts against the feeding alignment plate 337, there is always a metering shell facing the pusher plate 335. In this way, the pusher plate 335 can push the facing metering shell to the other side of the transfer conveyor line B320.

[0031] Key reference Figures 1 to 17 The batch coating device 200 of this application mainly includes a workbench B270, and a guide rack 280, a coating conveyor line 210 and a coating mechanism 220 disposed on the workbench B270, as shown in the figure. The guide rack 280 has a guide groove 281 that corresponds one-to-one with the coating conveyor line 210. The guide groove 281 has symmetrically arranged steps on the two inner sides facing each other in the length direction, which can allow the metering shell to be suspended and supported in the guide groove 281.

[0032] The guide rack 280 is divided into a preparation station, a waiting station, an adhesive application station, and a material picking station along its length. The adhesive application conveyor line 210 is located below the guide rack 280 and covers the length of the preparation station and the waiting station. The adhesive application mechanism 220 is set corresponding to the adhesive application station. A station switching mechanism 230 is set below the guide rack 280. The station switching mechanism 230 is used to move the metering shells in the waiting station and the adhesive application station forward one station in sequence. That is, the metering shells in the guide trough 281 are moved from the entry end of the preparation station to the waiting station via the adhesive application conveyor line 210. The station switching mechanism 230 can move the metering shells in the waiting station 230 to the adhesive application station and move the metering shells in the adhesive application station to the material picking station.

[0033] In step S2, during the glue application operation, the metering shell is first positioned and fixed. As shown in the figure, the batch glue application device 200 includes a positioning mechanism 240 corresponding to the glue application station. Each guide trough 281 has a corresponding positioning mechanism 240. The positioning mechanism includes a lifting cylinder 241 located below the guide trough 281. The piston rod of the lifting cylinder 241 faces upward, and its top has a horizontally arranged top plate 242. The width of the top plate 242 is less than or equal to the width of the guide trough 281. The guide frame 280 has at least two positioning pins 243 distributed diagonally. The distribution position of the positioning pins 243 is adapted to the position of the through hole on the outer edge of the metering shell. When the metering shell is in the glue application station, the lifting cylinder 241 works, lifting the metering shell through the top plate 242. At the same time, the positioning pins 243 are inserted into the corresponding through hole of the metering shell, which supports and positions the metering shell, ensuring the stability of the glue application process and improving the glue application quality.

[0034] In this embodiment, the two actions of moving the metering shell of the waiting station 230 to the glue application station and moving the metering shell of the glue application station to the material picking station are completed simultaneously by the station switching mechanism 230. As shown in the figure, the mechanism includes a mounting plate 231 located below the guide frame 280 and spanning all guide grooves 281, and a station switching drive assembly for driving the mounting plate 231 to slide horizontally and rise vertically along the length of the guide grooves 281. The station switching drive assembly mainly includes a base plate 232. During installation, the entire station switching mechanism 230 passes through the base plate. 232 is fixed on the workbench B270. The base plate 232 has symmetrically arranged vertical support plates 233 on both sides. The vertical support plates 233 have slide blocks 234 that slide vertically with them, and lifting cylinders 235 for driving the slide blocks 234 to move vertically. At the same time, the left and right sides of the mounting plate 231 slide with the slide blocks 234 through horizontal guide structures, and the guide direction is parallel to the guide groove 281. A horizontal switching cylinder 236 is configured to drive the mounting plate 231 to slide along the direction of the guide groove 281.

[0035] The mounting plate 231 has a pusher assembly that corresponds one-to-one with the guide groove 281. The pusher assembly is mainly used to push the metering shell forward. In this embodiment, the pusher assembly includes pusher A2310, pusher B2311 and pusher C2312 arranged sequentially along the direction away from the glue coating conveyor line 210. The horizontal distance between pusher A2310 and pusher B2311 is adapted to the length of the metering shell, so as to better realize the rapid and accurate positioning of the metering shell at the glue coating station.

[0036] It should be noted that in this embodiment, in order to make full use of the height space and improve the compactness and ease of installation of the overall structure, the lifting cylinder 241 is directly supported on the base plate 232 by the support rod 244. The lifting cylinder 241 is located above the base plate 232. Correspondingly, the mounting plate 231 has a strip-shaped clearance hole 2313 corresponding to the support rod. The strip-shaped clearance hole 2313 is set along the length direction of the guide groove 281, so as not to hinder the back and forth sliding of the base plate 232. At the same time, the pusher B2311 adopts a grouped rod-shaped structure or frame structure. During the back and forth sliding process, it is not blocked by the lifting cylinder 241, but its width can be less than or equal to the width of the metering shell.

[0037] refer to Figures 6 to 11 The glue application mechanism 220 mainly includes a glue gun moving unit and a glue quantity control unit. The glue gun moving unit includes a glue gun fixing plate 221 and a three-axis gantry module 222 that controls the movement trajectory of the glue gun fixing plate 221. The three-axis gantry module 222 is fixedly supported on the worktable B270. The glue gun fixing plate 221 has glue guns 2210 that correspond one-to-one with the guide grooves 281. The three-axis gantry module 222 is used to drive the glue guns 2210 to move up, down, translate, and move left and right according to the control, that is, to complete the movement along the preset trajectory. At the same time, the glue guns 2210 spray glue to complete the glue application operation.

[0038] The glue quantity control unit mainly includes a glue dispenser 223, a pressure stabilizing valve 224, and a pressure regulating valve A225. The glue outlet of the glue dispenser 223 is connected to the pressure stabilizing chamber of the pressure stabilizing valve 224 through a pipeline. The air outlet of the pressure regulating valve A225 is connected to the air inlet of the pressure stabilizing valve 224 through a pipeline. The glue outlet of the pressure stabilizing valve 224 is connected to the chamber of the glue gun 2210 through a pipeline. The regulating valve A225 is connected to a high-pressure air source. By adjusting the pressure of the regulating valve A225, the amount of glue entering the chamber of the glue gun 2210 can be controlled.

[0039] Based on this, in this embodiment, the glue gun 2210 is connected to a pressure single-control line (not shown in the figure). The pressure single-control line is connected to the air source and usually adopts a stop valve structure. The opening and closing of the stop valve is controlled by the pressure single-control line, thereby further finely controlling the glue output.

[0040] Combination Figures 12 to 17 The adhesive application device 200 also includes a stop mechanism A250 corresponding to the end of the material preparation station and a stop mechanism B260 corresponding to the end of the waiting station. As shown in the figure, the stop mechanism A250 includes a gantry frame A251 supported on the workbench B270. The gantry frame A251 is horizontally arranged above the guide frame 280, and has a stop cylinder A252 corresponding to the guide groove 281. The piston rod of the stop cylinder A252 faces downward and is connected to a baffle plate A253.

[0041] The structure of the stop mechanism B260 is similar to that of the stop mechanism A250, mainly including the gantry frame B261. The difference is that the gantry frame B261 adopts an integral lifting structure, as shown in the figure. Its horizontal plate has sliding cooperation with the vertical plate at both ends and is equipped with a stop cylinder B262. The stop cylinder B262 can drive the horizontal plate 264 to rise and fall. At the same time, the horizontal plate has a downwardly extending baffle plate B263. Meanwhile, a detection sensor 265 is set on the gantry frame B261. The detection sensor 265 is set one-to-one with the guide chute 281, that is, one-to-one with the baffle plate B263, and is located upstream of the material receiving baffle plate B263 to detect whether there is a metering shell at the corresponding waiting station. In this embodiment, there is a gap between the waiting station and the material preparation station, which is at least enough for the pusher A2310 to extend. The feed pushes the metering shells waiting at the workstation forward. During operation, when a metering shell is being coated at the glue application station, the piston rod of the stop cylinder B262 retracts, and the baffle B263 descends, blocking the metering shell at the waiting workstation. Simultaneously, when the detection sensor detects that there is a metering shell at the workstation, the piston rod of the stop cylinder A252 corresponding to the same guide trough 281 extends, and the baffle A253 descends to block the metering shell sent by the glue application conveyor line 210. This ensures that there are metering shells at the waiting workstations in each guide trough 281, and that the metering shells are horizontally aligned. Then, they are transferred to the glue application station through the workstation switching mechanism 230. This helps to further improve work efficiency and avoid the occurrence of empty workstations, greatly improving overall reliability.

[0042] In this application, the stop mechanism A250, the stop mechanism B260, the positioning mechanism 240 and the station switching mechanism 230 together constitute the station positioning structure of the metering shell, which can ensure the accuracy of the metering shell at each station on the glue application device and help improve the overall operational reliability of the equipment.

[0043] In addition, in this embodiment, a drying device is provided between the glue application station and the material picking station. The drying device is located below the guide frame. In this way, after the glue application is completed in step S2, the sealing ring on the metering shell can be dried to speed up the shaping of the ring and reduce the impact on the quality of the ring during the gripping or transfer process.

[0044] refer to Figures 18 to 29 In order to quickly store the metering shells after gluing for subsequent processes in gas meter assembly, a pallet loading and unloading module is provided at the discharge end of the batch gluing device 200. A special pallet 600 for holding the metering shells is also provided. The pallet loading and unloading module mainly includes a pallet supply unit 400 and a pallet transfer unit 500.

[0045] As shown in the figure, the tray 600 includes a plate-shaped body 610. The outer edge of the plate-shaped body 610 has an upwardly bent flange 620 along its thickness direction. The plate-shaped body 610 has a plurality of spaced placement holes 611, which allow the metering shell to be placed into the cavity facing upwards. The outer edge of the metering shell is supported on the plate-shaped body 610. The bottom of the plate-shaped body 610 has at least three evenly distributed support columns 612. The height of the support columns 612 is greater than the depth of the metering shell. This ensures that when the two trays 600 are stacked, the metering shell in the upper tray will not contact the metering shell in the lower tray.

[0046] In this embodiment, the plate-shaped main body 610 is generally rectangular plate-shaped structure, with hand grips 613 at both ends in the length direction, and at least two sets of clamping openings 621 symmetrically arranged in the width direction on the flange 620.

[0047] The tray 600 has a positioning boss 630 symmetrically arranged along its length near the center. The bottom of the tray has a positioning groove 640 corresponding to the positioning boss 630. When the upper and lower trays 600 are stacked, the positioning boss 630 of the lower tray can be inserted into the positioning groove 640 of the upper tray.

[0048] The bottom of the plate-shaped body 610 has an inwardly recessed ridge 650 along its outer edge, forming a first positioning step between the inwardly recessed ridge 650 and the plate-shaped body 610. At the same time, the four corners of the plate-shaped body 610 have generally L-shaped positioning pieces 614. The positioning pieces 614 are located inside the inwardly recessed ridge 650, forming a second positioning step between them. The two positioning steps work together to ensure the stability of the pallets when stacking. Furthermore, the corners of the plate-shaped body 610, the flange 620, the inwardly recessed ridge 650, and the positioning pieces 614 are all rounded. The stepped positioning structure also facilitates the quick alignment and stacking of pallets, as well as the removal of the upper pallet, preventing jamming and improving ease of use.

[0049] Key reference Figures 18 to 24 In this embodiment, the pallet supply unit 400 mainly includes an empty pallet stacking station 410, a pallet transfer line 420 and an empty pallet gripper assembly 430 corresponding to the empty pallet stacking station. The pallet transfer line 420 includes at least a pallet placement position and a pallet waiting position. The empty pallet gripper assembly 430 can grab the empty pallets in the empty pallet stacking station 410, place them in the pallet placement position, and transport them to the pallet waiting position.

[0050] The pallet transfer unit 500 mainly includes a pallet fixing station and a full-load pallet stacking station 540, as well as a pallet fixing component 510 and a metering shell gripper assembly 520 corresponding to the pallet fixing station, and a full-load pallet gripper assembly 530 for gripping and placing the pallet at the pallet fixing station to the full-load pallet stacking station. The metering shell gripper assembly 520 is used to grip and place the metering shell at the material picking station on the batch gluing device 200 into the pallet at the pallet fixing station.

[0051] Specifically, the pallet supply unit 400 and the pallet transfer unit 500 share a main frame beam structure, which is mainly composed of columns, beams and protective grilles. The pallet supply unit 400 includes a frame B440 fixed on the main frame. The frame B440 includes two horizontally aligned main beams 441 and multiple secondary beams 442 connecting the two main beams 441. The pallet transfer line 420 is fixed on the frame B440 and located between the two main beams 441. It includes two horizontally parallel straight belts. The main beams 441 have guide beams 444. The inner side of the guide beams 444 has vertically arranged rollers 443. The vertical distance between the two horizontally aligned rollers 443 is adapted to the width of the pallet.

[0052] The empty pallet stacking station 410 is located at one end of the pallet transfer line 420 (i.e., the pallet placement position). The empty pallet gripper assembly 430 mainly includes a gripper base A431 for driving the gripper base A431 to rise and fall, and a gripper drive mechanism A432 for horizontal movement between the empty pallet stacking station 410 and the pallet placement position, as shown in the figure. The gripper drive mechanism A432 mainly includes two horizontally arranged X-direction gripper guide rails A4320 and a Y-direction base A4321 that slides with the X-direction gripper guide rails A4320. The X-direction gripper guide rails A4320 cover the empty pallet stacking station 410 and the pallet placement position. In implementation, the X-direction gripper guide rails A4320 are fixed to the top of the main frame beam structure, and the Y-direction base A4321 has... The system includes a Z-axis base A4322 that slides with the gripper base A431. The lower end of the Z-axis base A4322 is fixedly connected to the gripper base A431. Meanwhile, the X-axis gripper guide rail A4320 has an X-axis rack A4323 arranged parallel to it, and an X-axis gear A4324 that meshes with the X-axis rack A4323. The Y-axis base A4321 has an X-axis motor A4325 for driving the X-axis gear A4324 to rotate. The Z-axis base A4322 is vertically arranged, and one side of it has a Z-axis rack A4326 that is fixed and parallel to it. The Z-axis rack A4326 is equipped with a Z-axis gear A4327 that meshes with it. The Y-axis base A4321 has a Z-axis motor A4328 for driving the Z-axis gear A4327 to rotate.

[0053] The gripper base A431 mainly includes a connecting beam A4310 arranged along the length of the pallet transfer line 420. The connecting beam A4310 has at least two horizontally arranged gripper mounting beams A4311. Each gripper mounting beam A4311 has a gripper assembly A installed at its end. The distance between adjacent gripper mounting beams A4311 is an integer multiple of the placement holes 611 on the pallet. In this embodiment, only two gripper mounting beams A4311 are provided, corresponding to the positions of the placement holes at both ends of the pallet. The gripper assembly A mainly includes a horizontally positioned clamping cylinder 4312. The clamping cylinder 4312 is horizontally positioned with its piston rod facing outwards and connected to a pressing cylinder 4313. The pressing cylinder 4313 has its piston rod facing downwards and is equipped with a clamping block 4314, as shown in the figure. The clamping block 4314 is L-shaped, with a bottom contact surface 43140 and a side contact surface 43141. Its slot extends outwards. Pressing blocks 4315 are connected to both lateral ends of the clamping block 4314. There is a gap between the pressing surface of the pressing block 4315 and the bottom contact surface 43140. This gap is typically adapted to the thickness of the object being gripped. In this embodiment, the gap is adapted to the thickness of the pallet. During operation, the gripper drive mechanism A drives the gripper seat A431 to its approximate position, with the gripper assembly A aligned with the placement hole 611. Then, the clamping cylinder 4313 drives the abutment block 4314 downwards until the clamping block 4315 contacts the upper surface of the pallet. Next, the abutment cylinder 4312 drives the abutment block 4314 to move horizontally outwards, so that the bottom contact surface 43140 of the abutment block 4314 contacts the bottom surface of the pallet near the placement hole, while the side contact surface 43141 abuts against the side of the placement hole 611, thereby achieving the gripping of the pallet. This ensures sufficient gripping balance and prevents tilting that could make it difficult to separate the upper and lower pallets.

[0054] In addition, to further improve the adaptability of the gripper base A431, a locking groove 43100 is provided on the connecting beam A4310 along its length. The gripper mounting beam A4311 is fixed to the connecting beam A4310 by locking screws, with the locking screws corresponding to the locking groove 43100. This allows the spacing of the gripper mounting beam A4311 to be adjusted as needed.

[0055] In this embodiment, the other end of the pallet transfer line 420 is a pallet fixing station. The pallet fixing assembly 510 mainly includes two positioning cylinders 511 arranged opposite each other around the pallet fixing station, and a lifting cylinder 512 arranged below the pallet transfer line 420. As shown in the figure, the piston rods of the positioning cylinders 511 are all horizontally inward, and their ends are provided with abutment plates 513. The lifting cylinder 512 is fixed on the sub-beam 442, its piston rod is upward, and it has a horizontally arranged lifting positioning plate 514. Usually, the bottom of the pallet has reinforcing ribs, and the lifting positioning plate 514 has positioning grooves 5130 that are adapted to the position of the reinforcing ribs, ensuring that the position of the pallet in the width direction is not affected by the horizontal force after the pallet is lifted. The lifting positioning plate 514 is located between two straight conveyor belts. During operation, when the pallet reaches this position (i.e., the pallet waiting position, usually detected by a position sensor), the pallet transfer line 420 stops working. The lifting positioning plate 514 is lifted by the lifting cylinder 512, simultaneously lifting the pallet on the straight conveyor belt until it aligns with the position of the clamping plate 513. At this point, the positioning cylinder 511 activates, fixing the pallet in place (in the pallet fixed position) via the clamping plate 513. In this embodiment, the end face of the clamping plate 513 abuts against the side of the pallet's inward-facing protrusion 650, while its upper surface contacts the plate-shaped body 610, providing support and ensuring the stability of the pallet's posture. Then, the lifting cylinder 512 resets, the lifting positioning plate 514 falls, and the pallet transfer line 420 resumes operation, transporting the pallet from the pallet placement position to the pallet waiting position, keeping one pallet in a waiting state, which helps improve production efficiency.

[0056] The metering shell gripper assembly 520 mainly includes a gripper base B521 and a gripper drive mechanism B for driving the gripper base B521 to move up and down and horizontally. The full-load pallet gripper assembly 530 mainly includes a gripper base C531 and a gripper drive mechanism C for driving the gripper base C531 to move up and down and horizontally. In this application, the gripper drive mechanism B and the gripper drive mechanism C are similar in structure to the gripper drive mechanism A. The gripper base B521 has a suction cup gripper 522 that corresponds to the material picking station. The suction cup gripper 522 can move horizontally to the top of the material picking station under the drive of the gripper drive mechanism B, then descend and extend into the groove of the metering shell to pick it up by negative pressure, and then move horizontally to the pallet fixing station. After descending, the metering shell is placed on the pallet of the station.

[0057] The gripper base C531 includes a connecting beam C5310 and multiple gripper mounting beams C5311, as shown in the figure. The gripper mounting beams C5311 and the connecting beams C5310 are both horizontally arranged and perpendicular to each other. Both ends of the gripper mounting beams C5311 are equipped with gripper assemblies C. The gripper assembly C mainly includes a clamping cylinder 5312. The piston rod of the clamping cylinder 5312 faces outward and is connected to a clamping plate 5313, as shown in the figure. In this embodiment, the position of the gripper mounting beam C5311 is adapted to the position of the positioning groove 640 and the clamping opening 621 on the tray. It should be noted that the inner side of the clamping plate 5313 corresponding to the clamping opening 621 has a clamping groove 5314, while the clamping plate 5313 corresponding to the positioning groove 640 only has an inwardly horizontally bent part at the bottom.

[0058] Furthermore, to further improve the working stability and reliability of the fully loaded pallet gripper assembly 530, elastic clamping plates 5315 are provided on the gripper mounting beams C5311 at both ends. In this embodiment, there are at least two elastic clamping plates 5315, which are diagonally distributed. The elastic clamping plates 5315 are fixed to the gripper mounting beams C5311 by elastic connectors 5316. The elastic clamping plates 5315 are three-sided and have outwardly sloping flanges at the bottom. When the pallet in the pallet fixing position is fully loaded... After the measurement shell is measured, the full-load pallet gripper assembly 530 starts working. The gripper base C531 descends facing the full-load pallet and first contacts and presses against the upper surface of the pallet. Then, the gripper assembly C clamps the two sides of the pallet. Then, the gripper drive mechanism C rises and moves horizontally to the full-load pallet stacking station. Multiple full-load pallets are stacked up and down in sequence to facilitate rapid subsequent transfer. Usually, a trolley is set up at the full-load pallet stacking station to place the full-load pallets. It can be quickly moved to the measurement shell pallet stacking station to facilitate rapid assembly.

[0059] As shown in the figure, the gripper drive mechanism C is similar in structure to the gripper drive mechanism A. The gripper drive mechanism C532 mainly includes two horizontally arranged X-direction gripper guide rails C5320 and a Y-direction base C5321 that slides with the X-direction gripper guide rails C5320. The X-direction gripper guide rails C5320 cover the pallet fixing station and the full-load pallet stacking station 540. The Y-direction base C5321 has a Z-direction base C5322 that slides with it. The lower end of the Z-direction base C5322 is fixedly connected to the gripper base C531. In implementation, the X-direction gripper guide rails C5320 are fixed to the top of the main frame beam structure. At the same time, the X-direction gripper guide rails C5320... The rail C5320 has an X-axis rack C5323 arranged parallel to it, and an X-axis gear C5324 meshing with the X-axis rack C5323. The Y-axis base C5321 has an X-axis motor C5325 for driving the X-axis gear C5324 to rotate. The Z-axis base C5322 is arranged vertically, and its lower end is fixedly connected to the connecting beam C5310. On one side of the Z-axis base C5322, there is a Z-axis rack C5326 fixed to and parallel to it. The Z-axis rack C5326 is equipped with a Z-axis gear C5327 meshing with it. The Y-axis base C5321 has a Z-axis motor C5328 for driving the Z-axis gear C5327 to rotate.

[0060] Main reference Figures 30 to 42 In this application, the meter housing pre-pressing line also includes a movement component transport line L and a placement seat N. The movement component structure in this application refers to the patent with patent number "202022713612.9" entitled "A Novel Diaphragm Gas Meter Movement Structure", and the placement seat can refer to the patent with patent number "202323087586.3" entitled "A Diaphragm Processing Production Line".

[0061] The movement assembly transport line is equipped with a metering shell pre-assembly station in its transport direction. The metering shell pre-assembly station is equipped with a placement seat fixing structure, a movement body fixing structure, a diaphragm positioning module 700, a metering shell gripping and releasing mechanism 800, and a metering shell pre-pressing structure. In step S5 of this application, the diaphragm positioning module 700 is mainly used to position the diaphragm.

[0062] During operation, the placement seat fixing structure is used to fix the placement seat in the metering shell pre-assembly station, the core body fixing structure is used to keep the core body in the placement seat relatively fixed to the placement seat, the diaphragm positioning module 700 is used to adjust the diaphragm cavity depth, the metering shell gripping and releasing mechanism 800 is used to grip the metering shell and fasten it to the core body in the placement seat, and the metering shell pre-pressing structure is used to pre-press the metering shell on the core body in the placement seat.

[0063] Key reference Figures 33 to 35In this application, the diaphragm positioning module 700 includes a positioning rod 710 and a rod drive mechanism 720 that drives the positioning rod 710 to extend and retract horizontally. The diaphragm positioning module 700 is located on one side of the metering shell pre-assembly station. The positioning rod 710 can extend into the core body located in the placement seat under the drive of the rod drive mechanism 720, and horizontally lift the diaphragm in the core body to the designed height (referring to the height of the diaphragm relative to the bottom of the membrane cavity after calculation). In specific implementation, it extends into the inner cavity from the window on one side of the core body. In this embodiment, the rod drive mechanism 720 adopts a sliding cylinder structure. By adjusting the diaphragm depth position, the membrane cavity volume is ensured to be appropriate. At the same time, the edge of the diaphragm extends outward evenly. Then, the metering shell is fastened and pre-pressed to ensure the uniformity of the contact position between the sealing ring on the metering shell and the diaphragm, and no skew will occur. This reduces the mechanical friction caused by the diaphragm skew in the later stage, improves the metering accuracy of the diaphragm, and greatly improves the assembly efficiency and product consistency compared with manual adjustment. The positioning rod 710 can be composed of a rod body 711 and a rod head 712. The rod head 712 is detachably connected to the rod body 711, such as by threaded connection or snap-fit. The positioning rod 710 is generally round, and the end of the rod body 710 has a square fixing head 715.

[0064] The positioning rod 710 of this application has at least a guide ramp 713 at its front end. The guide ramp 713 can lift the folded plate and allow it to better extend under the folded plate. Furthermore, at least one or more horizontal step surfaces 714 can be sequentially provided behind the guide ramp 713, such as... Figure 35 As shown, the transition between adjacent horizontal step surfaces 714 can be either a sloping surface or a smooth arc. When the positioning rod 710 extends into the mechanism body, the folding plate is lifted via the horizontal step surface 714, ensuring the folding plate's horizontality. The guiding sloping surface better ensures the positioning rod extends under the folding plate, while the horizontal step surface better ensures the folding plate's horizontality when lifted, preventing tilting to one side and further improving the accuracy of diaphragm posture adjustment. Furthermore, different step surfaces can adapt to different depth adjustment requirements, thus expanding its applicability.

[0065] Given that the existing folding plate has a sliding engagement part that cooperates with the membrane clamping plate, in this application, it is preferable that when the positioning rod 710 extends into the core body, the guide slope 713 or the horizontal step surface 714 contacts the membrane clamping plate at the lower side of the sliding engagement part, which is the middle area of ​​the basic membrane. This way, the uniformity of membrane extension can be better guaranteed when lifting.

[0066] refer to Figures 30 to 32 , Figure 36 and Figure 37In this application, the metering shell gripping mechanism 800 includes a robotic arm 810 and a metering shell gripper assembly 820 connected to the free end of the robotic arm 810. The metering shell gripper assembly 820 includes a connecting plate 821 and a floating plate 822 arranged vertically opposite each other. A metering shell suction cup 823 is fixed at the bottom of the floating plate 822, as well as a constraint structure adapted to the contour of the metering shell. The connecting plate 821 and the floating plate 822 are slidably engaged and can slide horizontally. A locking mechanism 830 is provided between the two, which can lock the connecting plate 821 and the floating plate 822.

[0067] In this embodiment, the locking mechanism 830 includes a locking cylinder 831 and a locking seat 832 respectively disposed on the floating plate 822 and the connecting plate 821. The piston rod of the locking cylinder 831 has a locking tongue 833 that engages with the locking seat 832. When the piston rod of the locking cylinder 831 is pushed out, the locking tongue 833 can engage with the locking seat 832, thereby achieving the purpose of locking the connecting plate 821 and the floating plate 822. In this embodiment, the locking seat 832 has a V-shaped groove. Of course, in addition to the above result, the method of injecting a locking pin and locking with a pin hole can also be adopted.

[0068] The constraint structure mainly includes a straightening plate 824 provided on the four sides of the corresponding metering shell protrusion. The lower end of the straightening plate 824 has a fitting slope adapted to the side of the metering shell protrusion. To further improve the gripping and releasing stability, in another embodiment, the constraint structure also includes positioning posts 825 provided on the four corner through holes of the metering shell. When the metering shell suction cup 823 grips the metering shell, the lower end face of the positioning post 825 abuts against the upper surface of the outer edge of the metering shell. On this basis, at least two diagonally arranged positioning posts 825 are provided with limiting heads 8250 at their lower ends. The size of the limiting heads 8250 is adapted to the four corner through holes of the metering shell. In this way, when the metering shell is gripped, the limiting heads 8250 can extend into the corresponding through holes to further limit the posture of the metering shell.

[0069] refer to Figures 37 to 40 To improve the system's compactness and convenience, a workbench C900 is provided for the pre-assembly station of the metering shell, as shown in the figure. The aforementioned placement seat fixing structure M, the core body fixing structure 950, the diaphragm positioning module 700, the metering shell gripping and placing mechanism 800, and the metering shell pre-pressing structure are all set on the workbench C900. The core component transport line L passes over the workbench C900.

[0070] As shown in the figure, a metering shell adjustment module 910 is also provided on one side of the metering shell pre-assembly station on the workbench C900. A metering shell pallet stacking station and a metering shell feeding robot arm 920 are provided on one side of the workbench C900. The metering shell pallet stacking station is used to stack the pallets 600 containing the metering shells. The metering shell feeding robot arm 920 is used to grab the metering shells from the metering shell pallet stacking station and place them into the metering shell adjustment module 910. The metering shells are flipped so that the concave cavity is horizontal and facing down by the metering shell adjustment module 910.

[0071] Specifically, the metering shell adjustment module 910 mainly includes an adjustment platform 911 and a metering shell flipping structure and a metering shell tooth expansion structure set on the adjustment platform 911, as shown in the figure. The metering shell flipping structure can be referred to in the patent application number "202122860827.8" entitled "Diaphragm Gas Meter Metering Shell Sealing Device". It mainly includes a flipping seat 912 and a corresponding profile tooling 913. The flipping seat 912 has a corresponding clamping structure and a flipping cylinder 913. The metering shell feeding robot arm 920 can grab the metering shell and place it on the flipping seat 912. After being flipped 180° by the flipping cylinder 913, it is fastened to the profile tooling 913 with the concave cavity facing down.

[0072] The difference in this embodiment is that, in order to better adapt to the metering shell gripping mechanism 800, that is, to adapt to the structure of the limiting head 8250, the copying tool 913 has countersunk holes 9130 that correspond one-to-one with the limiting head 8250.

[0073] On the other hand, in step S6 of this application, the metering shell is expanded before being fastened to the movement body, which can improve the fastening efficiency by allowing liquid to enter. Therefore, this embodiment specifically proposes an expanded tooth structure. As shown in the figure, the expanded tooth structure mainly consists of an expanded tooth seat 914. As shown in the figure, the adjustment platform 911 has an expanded tooth guide rail 915 that slides with the expanded tooth seat 914, and an expanded tooth cylinder 916 for driving the expanded tooth seat 914 to slide horizontally. The expanded tooth seat 914 can slide down the expanded tooth cylinder 916 to directly above the copying tool 913.

[0074] The tooth-expanding seat 914 has an open, downward-facing cavity whose structure and size are adapted to the outer contour of the metering shell. The four sides of the copying fixture 913 have tooth-expanding inclined surfaces. When the metering shell is positioned on the copying fixture 913, the rivet teeth on the metering shell contact the tooth-expanding inclined surfaces. The bottom of the copying fixture 913 has a copying lifting cylinder 917. When the tooth-expanding seat 914 is directly above the copying fixture 913, the copying lifting cylinder 917 pushes the copying fixture 913, along with the metering shell, into the cavity of the tooth-expanding seat 914. Under the action of the tooth-expanding inclined surfaces, the rivet teeth are pushed outwards. Compared to traditional tooth-expanding structures, the simultaneous tooth-expanding on all four sides of the metering shell results in a more uniform tooth-expanding effect, which is beneficial for maintaining consistency.

[0075] To further improve the adaptability and ease of assembly and disassembly of the metering shell adjustment module 910, in this embodiment, the metering shell adjustment module 910 is supported on the workbench C900 by an intermediate plate 918, as shown in the figure. The intermediate plate 918 has an adjustment guide rail arranged along its length direction, and the adjustment platform 911 slides with the adjustment guide rail. At the same time, the intermediate plate 918 is provided with a driver for driving the adjustment platform 911 to slide along the adjustment guide rail. Correspondingly, the intermediate plate 918 has a cylinder clearance groove 9180 corresponding to the contour lifting cylinder 917. With the above structure, on the one hand, the height space is fully utilized to install the contour lifting cylinder 917, the overall structure is more compact, and the longitudinal position can be adjusted as needed in the later stage, so that it can be better adapted to the metering shell feeding robot arm 920 and the metering shell gripping and releasing mechanism 800.

[0076] The mechanism body fixing structure 950 mainly includes a horizontally arranged mechanism body fixing cylinder 951 and a mechanism body fixing seat 952 connected to the piston rod end of the mechanism body fixing cylinder 951, as shown in the figure. The mechanism body fixing seat 952 has a top head 953 adapted to the positioning post on the side of the mechanism body. After the placement seat is in the metering shell pre-assembly station, the placement seat is first fixed by the placement seat fixing structure, and then the mechanism body can be fixed by the mechanism body fixing structure 950.

[0077] refer to Figures 30 to 32 , Figure 37 and Figure 38 As shown, the metering shell pre-compression structure in step S6 of this application includes pre-compression cylinders A930 and B940, which are positioned opposite each other on both sides of the metering shell pre-assembly station. The piston rod ends of pre-compression cylinders A930 and B940 are respectively connected to riveting heads A931 and B941. The pre-tightening force provided by pre-compression cylinder B940 is greater than that of pre-compression cylinder A930. In short, the cylinder diameter of pre-compression cylinder B940 is larger than that of pre-compression cylinder A930. Specifically, to ensure the pre-tightening effect, the riveting angle of riveting heads A931 and B941 is greater than or equal to 45°.

[0078] refer to Figures 1 to 42 The automated production and assembly line for diaphragm gas meters shown in the illustration, in its specific implementation, involves the metering shell, stamped by the metering shell punch press 100, being sent out with the concave cavity facing downwards. After passing through the transfer module 300, it enters the adhesive coating conveyor line 210 with the concave cavity facing upwards. It then passes through the material preparation station and the waiting station before reaching the adhesive coating station, where the adhesive coating mechanism 220 performs the adhesive coating operation. The sealing ring on the metering shell is generally a rectangular closed-loop structure. In this application, to improve the quality of the formed sealing ring, two implementation methods are provided for the adhesive coating process: The sealing ring includes a short side and a long side, where the length of the short side is a. During the adhesive application process, the adhesive is applied starting from the position near the middle of the short side, and the amount of adhesive applied increases linearly. Within the stroke L, a stable amount of adhesive Q is reached. When the adhesive application reaches the initial spraying position, the amount of adhesive applied decreases linearly in the same way, decreasing to zero within the stroke L, where L≤a / 2.

[0079] Because there is usually a rounded chamfer section between the short and long sides, in another embodiment, during the adhesive application process, the adhesive is applied from the middle position of the rounded chamfer section with a stable amount of adhesive Q. The adhesive application is stopped when the trajectory returns to the initial spraying position. In short, the joint point is placed on the rounded chamfer section, which can increase the adhesion effect of the joint point and thus improve the shaping quality of the adhesive ring.

[0080] After the glue application is completed, the metering shell moves to the picking station and is picked up by the metering shell gripper assembly 520 and placed on the pallet in the pallet fixing position. When the pallet in the pallet fixing position is full of metering shells, the full-load pallet gripper assembly 530 starts to work and picks up the pallet and places it in the full-load pallet stacking position.

[0081] Once the vehicle at the full-load pallet stacking station is full of full-load pallets, it can be transferred to the metering shell pallet stacking station for use by the metering shell pre-pressing line. The placement seat N carrying the core body is transported to the metering shell pre-assembly station via the core assembly transport line L. First, the placement seat N is fixed by the placement seat fixing structure, and then the core body is fixed by the core body fixing structure 950.

[0082] When the diaphragm positioning module 700 operates, the positioning rod 710 extends through the window on the side of the mechanism body, raising the diaphragm clamp to the designed height. This ensures that the edge of the diaphragm extends outwards evenly to cover the end face of the mechanism body. Then, the metering shell gripping mechanism 800 grips the metering shell, which has been flipped and expanded, and fastens it onto the mechanism body. Next, the metering shell pre-pressing structure performs riveting pre-pressing. It should be noted that the locking mechanism 830 is in a locked state during the gripping of the metering shell and fastening it onto the mechanism body. When the metering shell pre-pressing structure operates, the locking structure 830 is in an unlocked state. After the pre-pressing is completed, the diaphragm positioning module 700 operates to remove the positioning rod 710 from the mechanism body and reset it.

[0083] 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 production method for diaphragm gas meters, characterized in that, Includes the following steps: S1, the metering shell is stamped using a metering shell punch press (100); S2, continuously flip the stamped metering shells in batches until the concave cavity faces upward, and perform batch glue application; S3, then place the metering shell with the sealing ring onto a special tray; S4, assemble the diaphragm with the folding plate installed in the movement body, and suspend the diaphragm at the suspension points at the four corners of the movement body; S5, Position the diaphragm to achieve the designed depth of the membrane cavity; In this step, a diaphragm positioning module (700) is used to position the diaphragm. The diaphragm positioning module (700) includes a positioning rod (710) and a rod drive mechanism (720) for driving the positioning rod (710) to extend and retract horizontally. The positioning rod (710) can extend horizontally into the movement body from the window on the front side of the movement body under the drive of the rod drive mechanism (720); The front end of the positioning rod (710) is provided with at least a guide slope (713), and one or more horizontal step surfaces (714) are arranged in sequence behind the guide slope (713). When the positioning rod (710) extends into the movement body, the folding plate is lifted by the horizontal step surface (714). S6, the metering shell is picked up from the special tray containing the finished metering shell and fastened to the core body. The rivet teeth of the metering shell are pre-pressed by the metering shell pre-pressing structure. During the pre-pressing process, the diaphragm depth remains unchanged. After the pre-pressing is completed, the diaphragm positioning module (700) works to make the positioning rod (710) retract from the core body and reset.

2. The automated production method for diaphragm gas meters according to claim 1, characterized in that: In step S2, a transfer module (300) is used to continuously flip the metering shell in batches and send it to the batch gluing device (200) for batch gluing operation.

3. The automated production method for diaphragm gas meters according to claim 1, characterized in that: The sealing ring of the metering shell is rectangular and closed, including a short side and a long side, wherein the length of the short side is a. During the glue application process in step S2, the glue application starts from the position near the middle of the short side, and the glue amount increases linearly. It reaches a stable glue amount Q within the stroke L. When the glue application reaches the initial spraying position, the glue amount decreases linearly in the same way, and decreases to zero within the stroke L, wherein L≤a / 2.

4. The automated production method for diaphragm gas meters according to claim 1 or 2, characterized in that: The sealing ring of the metering shell is rectangular closed-loop, including a short side and a long side, with a rounded chamfer section between the short side and the long side. During the glue application process in step S2, glue application starts from the middle position of the rounded chamfer section with a stable glue spraying amount Q. The glue application stops when the trajectory closed loop moves back to the initial spraying position.

5. The automated production method for diaphragm gas meters according to claim 1 or 2, characterized in that: In step S2, after the adhesive is applied, the metering shell is dried.

6. The automated production method for diaphragm gas meters according to claim 1 or 2, characterized in that: In step S2, the metering shell is positioned and fixed during the adhesive application process.

7. The automated production method for diaphragm gas meters according to claim 1, characterized in that: In step S6, the measuring shell is expanded with teeth and then fastened onto the movement body.

8. The automated production method for diaphragm gas meters according to claim 1 or 7, characterized in that: In step S6, the metering shell pre-compression structure includes pre-compression cylinder A (930) and pre-compression cylinder B (940) on the front and rear sides of the corresponding movement body. The piston rod ends of the pre-compression cylinder A (930) and pre-compression cylinder B (940) are respectively connected to riveting head A (931) and riveting head B (941). During the pre-pressing process, the pre-pressing force provided by the pre-pressing cylinder B (940) is greater than the pre-pressing force of the pre-pressing cylinder A (930). When both the riveting head A (931) and the riveting head B (941) are in contact with the riveting teeth of the metering shell, the riveting head B (941) can remain stationary.

9. The automated production method for diaphragm gas meters according to claim 1 or 7, characterized in that: In step S6, the rivet teeth at least on both ends of the metering shell along the length direction are pre-pressed, and the tilt angle of the rivet teeth after pre-pressing is greater than or equal to 45°.

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