High efficiency manufacturing system for diaphragm gas meters

Abstract

The application discloses a kind of membrane gas meter high-efficiency manufacturing system, including metering shell production line and metering shell pre-pressing line, metering shell production line includes transfer module and tray loading and unloading module, wherein transfer module can carry out batch continuous turnover to metering shell, so that it is with concave cavity upwards to carry out gluing operation;Tray loading and unloading module includes tray supply unit and tray transfer unit;Metering shell pre-pressing line includes metering shell preloading station and metering shell tray stacking station, and diaphragm positioning module, metering shell grabbing mechanism and metering shell pre-pressing structure are set to corresponding metering shell preloading station.The above scheme is mainly from the forming of metering shell, the loading and transfer of finished metering shell and the assembly of metering shell and core body three process steps, to improve the continuity between each step, and control the quality and efficiency of each step, 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 a high-efficiency manufacturing system 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 meter housing transfer and independent material supply, resulting in poor process continuity, significantly reduced production efficiency, increased 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 a high-efficiency manufacturing system for diaphragm gas meters to solve the problems of low efficiency in the production and assembly process of metering shells in diaphragm gas meters in the prior art, which affects the overall production efficiency and quality of the meter.

[0006] The technical solution is as follows:

[0007] A high-efficiency manufacturing system for diaphragm gas meters includes a metering shell production line and a metering shell pre-pressing line. The key feature is that the metering shell production line includes a transfer module and a pallet loading and unloading module, wherein the transfer module can continuously flip the metering shells in batches so that their concave cavities face upwards for gluing operations.

[0008] The pallet loading and unloading module includes a pallet supply unit and a pallet transfer unit. The pallet supply unit includes an empty pallet stacking station, a pallet transfer line and an empty pallet gripper assembly corresponding to the empty pallet stacking station, and a pallet fixing station and a fully loaded pallet stacking station, as well as a pallet fixing component, a metering shell gripper assembly and a fully loaded pallet gripper assembly corresponding to the pallet fixing station.

[0009] 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, a metering shell gripping and releasing mechanism, and a metering shell pre-compression structure set corresponding to the metering shell pre-assembly station. The diaphragm positioning module is used to adjust the depth of the diaphragm cavity inside the movement body, the metering shell gripping and releasing mechanism is used to grip the metering shell and fasten it to the movement body, the metering shell pre-compression structure is used to pre-compress the metering shell on the movement body, and the metering shell pallet stacking station is used to receive the pallet containing the metering shell transferred from the full-load pallet stacking station.

[0010] The above scheme mainly utilizes a transfer module to achieve continuity between the stamping and batch gluing processes, and a pallet loading and unloading module to achieve continuity between the supply of empty pallets, the grabbing and placement of metering shells, and the stacking of fully loaded pallets, thereby reducing intermediate waiting time and improving the production efficiency of metering shell finished products. On the other hand, a diaphragm positioning module is used to achieve precise positioning of the diaphragm, improve the suitability of the pre-compression between the metering shell and the diaphragm, and improve the quality of the diaphragm surface.

[0011] Preferably, the transfer module includes transfer conveyor line A, transfer conveyor line B, and a feeding mechanism, with a flipping mechanism between transfer conveyor line A and transfer conveyor line B. Using this scheme, the transfer module connects the metering shell punching machine with the batch gluing device, directly transferring the stamped metering shells to the gluing device in an orientation conducive to gluing. This achieves rapid stamping and gluing integration, significantly improving the production efficiency of the finished metering shells, facilitating the rapid assembly of subsequent gas meters, and reducing labor intensity and space requirements.

[0012] Preferably, both transfer conveyor line A and transfer conveyor line B are belt conveyors, and transfer conveyor line B is located directly below transfer conveyor line A. The end of transfer conveyor line A away from the discharge port has a ramp section, and the overturning mechanism is set corresponding to the ramp section.

[0013] The flipping mechanism includes a stop plate and at least one retaining block. The stop plate corresponds to the lower end of the ramp section, and the vertical distance between the stop plate and its end is less than half the width of the metering shell but greater than the thickness of the metering shell. The at least one retaining block corresponds to the upper end of the ramp section and is rotatably positioned directly above the upper end of the ramp section, with its vertical distance from the upper end of the ramp section less than the thickness of the metering shell. Using this scheme, because the stamped metering shell faces downwards when it exits the discharge port, the flipping mechanism flips it over, facilitating the subsequent glue application operation. The structure is simple and easy to implement and install.

[0014] Preferably, the pallet transfer line has a pallet placement position and a pallet waiting position. The empty pallet gripper assembly can grab an empty pallet in the empty pallet stacking position and place it in the pallet placement position, and then transport it to the pallet waiting position.

[0015] The empty pallet stacking station and the fully loaded pallet stacking station are located on one side of the pallet transfer line, corresponding to the pallet placement position and the pallet fixing position, respectively. The pallet fixing position is located directly above the pallet waiting position. This design results in a more compact overall structure and better operational efficiency.

[0016] Preferably, the tray includes a plate-shaped body with an upwardly bent flange along its thickness direction on the outer edge. The plate-shaped body has a plurality of spaced placement holes for inserting the metering shell into the upwardly facing cavity. The outer edge of the metering shell is supported on the plate-shaped body. The bottom of the plate-shaped body has at least three evenly distributed support columns, the height of which is greater than the thickness of the metering shell. The flange has at least two sets of clamping openings symmetrically arranged in pairs along the width direction.

[0017] The empty pallet gripper assembly includes a gripper base A, a gripper drive mechanism A for driving the gripper base A to rise and fall, and a gripper drive mechanism A for horizontally moving between the empty pallet stacking station and the pallet placement station.

[0018] The gripper base A includes a connecting beam A arranged along the conveying direction of the pallet transfer line. The connecting beam A has at least two horizontally arranged gripper mounting beams A. Each gripper mounting beam A has a gripper assembly A installed at its end. The distance between adjacent gripper mounting beams A is an integer multiple of the placement hole on the pallet.

[0019] The gripper assembly A includes a horizontally positioned clamping cylinder with its piston rod facing outwards and connected to a pressing cylinder. The piston rod of the pressing cylinder faces downwards and is fitted with a clamping block. The clamping block has a bottom contact surface and a side contact surface arranged in an L-shape, allowing passage through a placement hole. The bottom thickness of the clamping block is less than the height of the support column. Using this design, during the gripping process, the clamping block extends into the placement hole, then expands outwards to lift the pallet, and then the entire assembly is moved upwards to remove the top pallet from the stack and place it on the pallet transfer line. This effectively prevents the pallet from tilting during gripping, causing uneven force distribution and potentially jamming with the lower pallet, thus demonstrating good reliability.

[0020] Preferably, the clamping block has pressing blocks at both ends, and there is a gap between the bottom surface of the pressing block and the bottom contact surface, which is adapted to the thickness of the plate-shaped body. Using the above scheme, during the gripping of an empty pallet, when the clamping block is loosely tightened, the pressing block simultaneously contacts the upper surface of the pallet, providing a certain pressing effect. This, combined with the clamping block, achieves tight sealing on three sides, greatly improving the balance and stability of the pallet during gripping and transfer, and further enhancing its operational reliability.

[0021] Preferably, the diaphragm positioning module includes a positioning rod and a rod drive mechanism for driving the positioning rod to extend and retract horizontally. The diaphragm positioning module is located on one side of the metering shell pre-assembly station. The positioning rod can extend horizontally into the core body located in the placement seat under the drive of the rod drive mechanism and raise the diaphragm in the core body horizontally to the designed height.

[0022] Preferably, the positioning rod includes a rod body and a rod head, with the rod head and rod body detachably connected. Using this design, different rod heads can be replaced as needed to adapt to different models of membrane surfaces.

[0023] Preferably, the positioning rod has a guide ramp and at least one horizontal step surface at its front end. When the positioning rod extends into the core body, the folding plate used to install the diaphragm is lifted by the horizontal step surface. With this design, the guide ramp ensures the positioning rod extends under the folding plate, while the horizontal step surface better guarantees 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 accommodate adjustment requirements at different depths, thus expanding its applicability and allowing for the assembly of more diaphragm sizes.

[0024] Preferably, the metering shell pre-pressing line includes a workbench C, a movement component transport line and a placement seat spanning the workbench C, with the metering shell pre-assembly station located on the workbench C. The workbench C has a placement seat fixing structure and a movement body fixing structure corresponding to the metering shell pre-assembly station. The diaphragm positioning module, the metering shell gripping and releasing mechanism, and the metering shell pre-pressing structure are all mounted on the workbench C. The workbench C also has a metering shell adjustment module, which includes a metering shell flipping structure and a metering shell tooth-expanding structure. Using this solution, the overall disassembly and relocation of the metering shell pre-pressing line is facilitated, and the flipping and tooth-expanding structures shorten the time required to attach the metering shell to the movement body, further improving assembly efficiency.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The high-efficiency manufacturing system for diaphragm gas meters provided by this invention mainly focuses on three process steps: meter shell forming, finished meter shell loading and transportation, and meter shell and core assembly. 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 diaphragm meters. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the metering shell production line structure of the present invention;

[0028] 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;

[0029] Figure 5 This is a schematic diagram of the feeding mechanism. Figure 6 This is a schematic diagram of a batch adhesive coating device.

[0030] Figure 7 This is a schematic diagram of the pallet loading and unloading module structure; Figure 8 for Figure 7 Axonometric drawing;

[0031] Figure 9 A schematic diagram of the pallet transfer line and pallet fixing components installation; Figure 10 A schematic diagram of the pallet transfer line and pallet securing components.

[0032] Figure 11 Schematic diagram of the unused pallet gripper assembly; Figure 12 for Figure 11 Axonometric drawing; Figure 13 This is a schematic diagram of the gripper base A structure;

[0033] Figure 14 This is a schematic diagram of the gripper base B structure; Figure 15This is a schematic diagram of the gripper base C structure; Figure 16 A schematic diagram of the working mechanism of the gripper C;

[0034] Figure 17 This is a schematic diagram of the pallet structure; Figure 18 This is a schematic diagram of the bottom structure of the tray.

[0035] Figure 19 This is a schematic diagram of the pre-compression line structure of the metering shell of the present invention;

[0036] Figure 20 for Figure 19 Top view; Figure 21 This is a top view of the structure above workbench C; Figure 22 A 3D view of the diaphragm positioning module;

[0037] Figure 23 This is a top view of 22; Figure 24 A side view of another embodiment of the positioning rod; Figure 25 A three-dimensional diagram of the metering shell gripper assembly;

[0038] Figure 26 for Figure 25 Axonometric drawing;

[0039] Figure 27 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;

[0040] Figure 28 for Figure 27 The front view; Figure 29 This is a schematic diagram of the metering shell adjustment module structure; Figure 30 for Figure 29 Front view;

[0041] Figure 31 This is a schematic diagram of the tooth expander seat structure. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings.

[0043] refer to Figures 1 to 31 The high-efficiency manufacturing system for diaphragm gas meters shown mainly includes a metering shell production line and a metering shell pre-pressing line. The metering shell production line is mainly used to complete the stamping and forming of the metering shell and the forming of the sealing ring, while the metering shell pre-pressing line is mainly used to pre-tighten the metering shell and the core body, which plays a role in the initial fixation of the diaphragm, so as to facilitate the next step of fully pressing and fixing.

[0044] 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 corresponding to the batch gluing device 200.

[0045] 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.

[0046] like Figures 1 to 18 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. The coating mechanism 220 is used to form a sealing ring on the metering shell.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 its concave 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 concave cavity of the metering shell faces upward, thus realizing the flipping of the metering shell.

[0052] 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 disposed 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 disposed 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.

[0053] 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.

[0054] 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 end of the transfer conveyor line B320 away from the second receiving end. The feed sensor seats 338 are arranged one-to-one with the pusher plates 335. Material sensors are installed on the feeding alignment plate 337 and multiple feeding sensor seats 338 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 will basically be one 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, that is, push it into the glue coating conveyor line 210. The glue coating conveyor line 210 sends it to the working position of the glue coating mechanism 220 for glue coating operation of the metering shell.

[0055] refer to Figures 7 to 18 In order to quickly store the metering shells after gluing for subsequent processes in gas meter assembly (i.e., the pressing process of metering shells), a pallet loading and unloading module is provided at the discharge end of the batch gluing device 200. A special pallet 600 for holding metering shells is also provided. The pallet loading and unloading module mainly includes a pallet supply unit 400 and a pallet transfer unit 500.

[0056] 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.

[0057] In this embodiment, the plate-shaped main body 610 is generally rectangular in shape, with handles 613 at both ends along its length. The flange 620 has at least two sets of clamping openings 621 symmetrically arranged in pairs along its width. The tray 600 has symmetrically arranged positioning protrusions 630 near its center along its length, and a positioning groove 640 corresponding to the positioning protrusions 630 on its bottom. When the two trays 600 are stacked, the positioning protrusion 630 of the lower tray fits perfectly into the positioning groove 640 of the upper tray.

[0058] 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.

[0059] Key reference Figures 11 to 17 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 pick up empty pallets at the empty pallet stacking station 410, place them at the pallet placement position, and transport them to the pallet waiting position. The pallet transfer unit 500 mainly includes a pallet fixing station and a full-load pallet stacking station 540, 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 picking up pallets at the pallet fixing station and placing them at the full-load pallet stacking station. The metering shell gripper assembly 520 is used to pick up metering shells at the material picking position on the batch gluing device 200 and place them into the pallets at the pallet fixing station.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] Main Reference Figures 19 to 31 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".

[0070] The movement assembly transport line is equipped with a metering shell pre-assembly station in its transport direction. Corresponding to the metering shell pre-assembly station are 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.

[0071] 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.

[0072] Key reference Figures 22 to 24In this application, 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 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 design 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 slide cylinder structure.

[0073] 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.

[0074] 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 24 As shown, the adjacent horizontal step surfaces 714 have a slope transition or a smooth arc transition, etc. When the positioning rod 710 extends into the core body, the folding plate is lifted by the horizontal step surface 714, which can fully ensure the horizontality of the folding plate.

[0075] 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.

[0076] refer to Figures 20 to 21 , Figure 25 and Figure 26 In 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.

[0077] 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.

[0078] 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.

[0079] refer to Figure 20 , Figure 21 , Figures 27 to 31 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] On the other hand, the tooth-expanding structure is also optimized in this embodiment. As shown in the figure, the tooth-expanding structure mainly consists of a tooth-expanding seat 914. As shown in the figure, the adjustment platform 911 has a tooth-expanding guide rail 915 that slides with the tooth-expanding seat 914, and a tooth-expanding cylinder 916 for driving the tooth-expanding seat 914 to slide horizontally. The tooth-expanding seat 914 can slide down the tooth-expanding cylinder 916 to directly above the copying tool 913.

[0084] The tooth-expanding seat 914 has an open, downward-facing cavity whose structure and size are adapted to the outer contour of the measuring case. The four sides of the copying fixture 913 have tooth-expanding inclined surfaces. When the measuring case is placed on the copying fixture 913, the rivet teeth on the measuring case 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 measuring case on it, into the cavity of the tooth-expanding seat 914. Under the action of the tooth-expanding inclined surfaces, the rivet teeth are pushed outwards, which is beneficial for later fastening onto the movement. Compared to traditional tooth-expanding structures, simultaneous tooth expansion on all four sides of the measuring case results in a more uniform tooth-expanding effect, which is beneficial for maintaining consistency.

[0085] 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.

[0086] 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.

[0087] refer to Figure 20 , Figure 21 , Figure 27 and Figure 28 As shown, the pre-compression structure of the metering shell in this application includes pre-compression cylinders A930 and B940, which are positioned opposite each other on both sides of the pre-assembly station of the metering shell. 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. In specific implementation, to ensure the pre-tightening effect, the riveting angle of riveting heads A931 and B941 is greater than or equal to 45°.

[0088] refer to Figures 1 to 31 In the high-efficiency manufacturing system of the diaphragm gas meter shown, during the specific implementation process, the meter shell formed by the meter shell punching press 100 is sent out with the concave cavity facing down. After being flipped by the transfer module 300, it continues to enter the glue coating conveyor line 210 with the concave cavity facing up, and the glue coating mechanism 220 works to perform the glue coating operation.

[0089] 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.

[0090] Once the vehicle at the full-load pallet stacking station is full of full-load pallets, it is transferred to the metering shell pallet stacking station for use by the metering shell pre-compression 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.

[0091] 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, ensuring that the edge of the diaphragm extends outward 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. Then, the metering shell pre-pressing structure performs riveting pre-pressing. It should be noted that the locking mechanism 830 is in the 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 the unlocked state. After the pre-pressing is completed, the diaphragm positioning module 700 operates to retract the positioning rod 710 from the mechanism body and reset it.

[0092] 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. A high-efficiency manufacturing system for diaphragm gas meters, comprising a metering housing production line and a metering housing pre-pressing line, characterized in that: The metering shell production line includes a transfer module (300) and a pallet loading and unloading module, wherein the transfer module (300) is capable of continuously flipping the metering shells in batches so that their concave cavities face upwards for gluing operations. The pallet loading and unloading module includes a pallet supply unit (400) and a pallet transfer unit (500). The pallet supply unit (400) includes an empty pallet stacking station (410), a pallet transfer line (420) and an empty pallet gripper assembly (430) set up corresponding to the empty pallet stacking station (410). The pallet transfer unit (500) includes a pallet fixing station and a full-load pallet stacking station (540), a pallet fixing component (510), a metering shell gripper assembly (520) and a full-load pallet gripper assembly (530) set up corresponding to the pallet fixing station. 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 corresponding to the metering shell pre-assembly station. The diaphragm positioning module (700) is used to adjust the depth of the diaphragm cavity inside 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 full-load pallet stacking station (540).

2. The high-efficiency manufacturing system for diaphragm gas meters according to claim 1, characterized in that: The transfer module (300) includes a transfer conveyor line A (310), a transfer conveyor line B (320) and a feeding mechanism (330), and a flipping mechanism (340) is provided between the transfer conveyor line A (310) and the transfer conveyor line B (320).

3. The high-efficiency manufacturing system for diaphragm gas meters according to claim 2, characterized in that: Both the transfer conveyor line A (310) and the transfer conveyor line B (320) are belt conveyors, and the transfer conveyor line B (320) is located directly below the transfer conveyor line A (310). The end of the transfer conveyor line A (310) away from the discharge port (110) has a ramp section (311), and the overturning mechanism (340) is provided corresponding to the ramp section (311). The flipping mechanism (340) includes a stop plate (341) and at least one retaining block (342), wherein the stop plate (341) corresponds to the lower end of the ramp section (311), and the vertical distance between the stop plate (341) and its end is less than half the width of the metering shell and greater than the thickness of the metering shell; 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), and 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.

4. The high-efficiency manufacturing system for diaphragm gas meters according to any one of claims 1 to 3, characterized in that: The pallet transfer line (420) has a pallet placement position and a pallet waiting position. The empty pallet gripper assembly (430) can grab an empty pallet in the empty pallet stacking station (410) and place it in the pallet placement position, and then transport it to the pallet waiting position. The empty pallet stacking station (410) and the full-load pallet stacking station (540) are located on one side of the pallet transfer line (420) and correspond to the pallet placement position and the pallet fixing position, respectively. The pallet fixing position is located directly above the pallet waiting position.

5. The high-efficiency manufacturing system for diaphragm gas meters according to claim 4, characterized in that: The tray includes a plate-shaped body (610), the outer edge of which 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 which is greater than the thickness of the metering shell. The flange (620) has at least two sets of clamping openings (621) symmetrically arranged in pairs along the width direction. The empty pallet gripper assembly (430) includes a gripper base A (431), a gripper drive mechanism A (432) for driving the gripper base A (431) to rise and fall, and a gripper drive mechanism A (432) for horizontally moving between the empty pallet stacking station (410) and the pallet placement station. The gripper seat A (431) includes a connecting beam A (4310) arranged along the conveying direction of the pallet transfer line (420). The connecting beam A (4310) has at least two horizontally arranged gripper mounting beams A (4311). Each gripper mounting beam A (4311) is equipped with a gripper assembly A at its end. The spacing between adjacent gripper mounting beams A (4311) is an integer multiple of the placement holes ((4311)) on the pallet. The gripper assembly A includes a horizontally arranged clamping cylinder (4312). The clamping cylinder (4312) is horizontally arranged with its piston rod facing outward and connected to a pressing cylinder (4313). The piston rod of the pressing cylinder (4313) faces downward and is equipped with a clamping block (4314). The clamping block (4314) has a bottom contact surface (43140) and a side contact surface (43141) that are arranged in an L-shape and can pass through the placement hole (611). The bottom thickness of the clamping block (4314) is less than the height of the support column (612).

6. The high-efficiency manufacturing system for diaphragm gas meters according to claim 5, characterized in that: The clamping block (4314) has clamping blocks (4315) at both ends. There is a gap between the bottom surface of the clamping block (4315) and the bottom contact surface (43140), which is adapted to the thickness of the plate-shaped body (610).

7. The high-efficiency manufacturing system for diaphragm gas meters according to claim 1, characterized in that: 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 diaphragm positioning module (700) is located on one side of the metering shell pre-assembly station. The positioning rod (710) can extend horizontally into the core body in the placement seat under the drive of the rod drive mechanism (720) and lift the diaphragm in the core body horizontally to the design height.

8. The high-efficiency manufacturing system for diaphragm gas meters according to claim 7, characterized in that: The positioning rod (710) includes a rod body (711) and a rod head (712), and the rod head (712) is detachably connected to the rod body (711).

9. The high-efficiency manufacturing system for diaphragm gas meters according to claim 7 or 8, characterized in that: The positioning rod (710) has a guide slope (713) and at least one horizontal step surface (714) at its front end. When the positioning rod (710) extends into the core body, the folding plate used to install the diaphragm is lifted by the horizontal step surface (714).

10. The high-efficiency manufacturing system for diaphragm gas meters according to claim 1, 7, or 8, characterized in that: The metering shell preloading line includes a workbench C (900), a mechanism component transport line and a placement seat that cross the workbench C (900). The metering shell preloading station is located on the workbench C (900). The workbench C (900) is provided with a placement seat fixing structure and a mechanism body fixing structure corresponding to the metering shell preloading station. The diaphragm positioning module (700), the metering shell gripping and releasing mechanism (800) and the metering shell preloading structure are all set on the workbench C (900). The workbench C (900) is also provided with a metering shell adjustment module (910), which includes a metering shell flipping structure and a metering shell tooth expansion structure.

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