Automatic assembling mechanism of ultrasonic gas meter metering module

Abstract

The utility model relates to an automatic assembling mechanism of an ultrasonic gas meter metering module. A base is included; the rotary worktable is fixedly arranged on the base; the metering module grabbing mechanism is used for grabbing the metering module in the rotating mechanism and moving the metering module to the gas meter workpiece; the rotating mechanism is fixedly arranged on the base and is used for clamping and overturning the metering module in the positioning fixture; the conveying mechanism is used for conveying gas meter workpieces to be machined; the plurality of positioning clamps are arranged on the rotary worktable and are used for assembling the metering module and the drainage tube; the metering module grabbing mechanism is arranged on one side of the base; the grabbing mechanism is used for grabbing and placing the metering module on a positioning clamp; the drainage tube grabbing mechanism is arranged on one side of the base; the grabbing device is used for grabbing and placing a drainage tube on a positioning clamp; the whole ultrasonic gas meter metering module is stable and reliable in assembly and movement, accurate in positioning, rapid and reliable in action and good in action consistency.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic gas meter accessories, and in particular relates to an automatic assembly mechanism for an ultrasonic gas meter metering module. Background Art

[0002] Ultrasonic gas meters are gradually replacing traditional mechanical gas flow meters and are widely used in gas flow detection due to their advantages such as good stability, high measurement accuracy, wide range ratio, low maintenance rate, small pressure loss and easy installation.

[0003] The metering module of the ultrasonic gas meter is the core metering component of the ultrasonic gas meter. The detection of the ultrasonic gas meter metering module is a very critical link in the entire life cycle of the gas meter, affecting the production efficiency and product performance of subsequent ultrasonic gas meter products.

[0004] The traditional assembly of existing metering modules is manual operation, which has long working hours, is prone to fatigue, has high personnel turnover, poor product consistency, and high labor costs. At the same time, the positioning of existing metering modules is difficult to achieve automated grasping, which can easily affect product quality and bring inconvenience to use.

[0005] In view of the above problems, it is necessary to improve them. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic assembly mechanism for an ultrasonic gas meter measuring module with a simple structure, ingenious design and high degree of automation.

[0007] In order to achieve the above objectives, the technical solution adopted by the utility model is: an automated assembly mechanism for an ultrasonic gas meter metering module, comprising a base; a rotating worktable fixed on the base; a metering module grasping mechanism for grasping the metering module in the rotating mechanism and moving it to the gas meter workpiece; a rotating mechanism fixed on the base for grasping and flipping the metering module in the positioning fixture; a conveying mechanism for conveying the gas meter workpiece to be processed; a plurality of positioning fixtures arranged on the rotating worktable for assembling the metering module and the drainage tube; a metering module grasping mechanism arranged on one side of the base; for grasping and placing the metering module on the positioning fixture; a drainage tube grasping mechanism arranged on one side of the base; for grasping and placing the drainage tube on the positioning fixture; a retaining spring conveying device arranged on one side of the base and connected to the base for assembling the metering module and the drainage tube in the positioning fixture.

[0008] As a preferred solution of the present invention, the rotating workbench includes a dividing plate, a motor and a turntable. The dividing plate is installed on the base and is driven to rotate by the motor. A turntable is provided on the top of the dividing plate. The turntable is installed on the turntable. A plurality of positioning fixtures distributed in a circle and used to place the metering module are provided on the top of the turntable.

[0009] As a preferred solution of the present invention, the positioning fixture includes a fixture base plate, a drainage tube fixture and a metering module fixture respectively arranged on the fixture base plate, a track is fixed on the fixture base plate, a slider is slidably connected to the track, the slider is fixed to the bottom of the drainage tube fixture, a positioning hole is formed on the fixture base plate, a positioning rod is assembled in the positioning hole, a positioning groove is formed at the bottom of the drainage tube fixture, one end of the positioning rod is located in the positioning hole, and the other end extends into the positioning groove; a cam bearing fixing plate is fixed to the bottom of the drainage tube fixture close to the positioning adjustment mechanism, and a cam bearing is installed on the cam bearing fixing plate.

[0010] As a preferred solution of the present invention, the metering module grasping mechanism includes a column, a base, a first arm, a second arm and a clamping device; the base is fixed on the column, one end of the first arm is horizontally rotatably connected to the base, the other end of the first arm is rotatably connected to one end of the second arm through a rotating shaft, and the other end of the second arm is vertically arranged with a third arm, and the bottom of the third arm is connected to a manipulator shaft, and the manipulator shaft is inserted into the third arm in the vertical direction. The manipulator shaft can rotate relatively around the axis and one end of the manipulator shaft extends out of the lower end of the third arm, the manipulator shaft can be extended and retracted up and down, and the lower end of the manipulator shaft is connected to a clamping device.

[0011] As a preferred scheme of the present invention, the clamping device includes a cylinder fixing plate, a cylinder support plate vertically fixed to the bottom of the cylinder fixing plate, and a driving cylinder is fixed on one side of the cylinder support plate; a first clamping jaw and a second clamping jaw for grabbing the metering module are arranged at the bottom of the driving cylinder, and a clamping groove is formed between the first clamping jaw and the second clamping jaw; a limit block is fixed on the bottom of the cylinder support plate, one end of the limit block extends into the clamping groove, and the limit block is located at the top of the clamping groove; the cylinder support plate is symmetrically fixed with upper and lower reinforcing ribs on the side away from the driving cylinder; wherein the upper reinforcing rib is fixed at the connection between the cylinder fixing plate and the cylinder support plate, and the lower reinforcing rib is fixed at the connection between the cylinder support plate and the limit block; the conveying mechanism includes a conveying frame, a movable pallet and a fixed frame; a slide rail is arranged on the conveying frame, the movable pallet is slidably assembled on the slide rail, and the fixed frame is fixed on the movable pallet, and the fixed frame is used to fix the gas meter workpiece to be processed.

[0012] As a preferred solution of the utility model, the rotating mechanism includes a bottom plate, support plates vertically fixedly arranged on both sides of the bottom plate, an upper plate fixedly arranged on the two support plates, a first driving mechanism is installed at the bottom of the upper plate, and a first driving shaft of the first driving mechanism passes through the upper plate and is connected to the top plate; a guide rail is fixedly provided on the top plate, and a sliding frame is slidably connected to the guide rail; a rotating cylinder fixing block is fixedly provided on the sliding frame; a second driving mechanism for driving the sliding frame to slide reciprocally along the guide rail is provided on one side of the rotating cylinder fixing block; a third driving mechanism is fixed on the other side of the rotating cylinder fixing block; a rotating arm is installed on the third driving mechanism, and the third driving mechanism is used to drive the rotating arm to rotate, and the rotating A clamping assembly is fixedly provided at the end of the arm; the clamping assembly includes a fourth driving mechanism, and the end of the fourth driving mechanism is equipped with relatively arranged clamping jaws, and the inner side of the clamping jaws is formed with a clamping guide groove, and the fourth driving mechanism drives the two clamping jaws to move toward their respective corresponding clamping guide grooves; it is used to stably clamp the metering module; the upper plate is vertically fixed with a vertical plate on the side close to the clamping assembly, and a guide block is fixed on the vertical plate, the guide block is located at the lower end of the clamping jaw, and a guide protrusion is formed on the guide block, and a guide slope is formed on the outer side of the guide block and the guide protrusion. When the clamping jaws of the rotating mechanism are used to clamp the metering module located in the accommodating cavity, the guide slope abuts against the cam bearing.

[0013] As a preferred solution of the present invention, the metering module grasping mechanism includes a metering module manipulator, and the lower end of the metering module manipulator is connected to a metering module clamping device; the metering module clamping device includes a metering module connecting plate, a metering module support plate vertically fixed to the bottom of the metering module connecting plate, and a metering module driving cylinder is fixed on one side of the metering module support plate; a third clamping jaw and a fourth clamping jaw for grasping the metering module are arranged at the bottom of the metering module driving cylinder, and a metering module clamping groove is formed between the third clamping jaw and the fourth clamping jaw; a third limit block and a fourth limit block are respectively fixed at the bottom of the third clamping jaw and the fourth clamping jaw; the third limit block and the fourth limit block are both located in the clamping groove.

[0014] As a preferred solution of the present utility model, the drainage tube grasping mechanism includes a drainage tube manipulator, and the lower end of the drainage tube manipulator is connected to a drainage tube clamping device; the drainage tube clamping device includes a drainage tube support plate, a drainage tube driving cylinder is fixedly provided on one side of the drainage tube support plate, and a drainage tube rotating arm is installed on the other side of the drainage tube support plate, the drainage tube driving shaft of the drainage tube driving cylinder passes through the drainage tube support plate and is connected to the drainage tube rotating arm, the drainage tube driving cylinder is used to drive the drainage tube rotating arm to rotate, and the end of the drainage tube rotating arm is provided with a fifth clamp and a sixth clamp for grasping the drainage tube; the outer sides of the fifth clamp and the sixth clamp are respectively fixed with a fifth limit block and a sixth limit block.

[0015] As a preferred solution of the present invention, the retaining spring conveying device includes a feeding mechanism, which is fixed on the feeding frame and is used to arrange and convey multiple retaining springs in an orderly manner; a dividing mechanism, which is fixed on the dividing base and connected to the feeding mechanism, and is used to push and flip the retaining springs in the feeding mechanism in sequence; a grabbing mechanism, which is fixed on the dividing base and is used to grab the retaining springs in the dividing mechanism and move them to the positioning fixture; the dividing mechanism includes a dividing support plate, a fifth driving mechanism is fixed on the dividing support plate, the fifth driving shaft of the fifth driving mechanism is connected to the driving plate, a sliding cylinder fixing plate is fixed on the driving plate, a first cylinder fixing plate is fixed on the sliding cylinder fixing plate, a sixth driving mechanism is fixed on the first cylinder fixing plate, and a limiting guard cover is connected to the sixth driving mechanism; a limiting groove is formed on the limiting guard cover along the length direction, a cylinder push block is equipped in the limiting groove, the sixth driving shaft of the sixth driving mechanism passes through the limiting groove and is connected to the cylinder push block, the cylinder push block is connected to the first rotating arm, and the dividing plate is equipped on the first rotating arm.

[0016] As a preferred solution of the present invention, supports are symmetrically fixed on the first cylinder fixing plate, a rotating shaft is provided between the two supports, and the rotating shaft is sleeved on the first rotating arm.

[0017] As a preferred solution of the present invention, a baffle is fixedly provided on the side of the first cylinder fixing plate away from the feeding mechanism, and the top of the baffle is higher than the top of the dividing plate; a shelf groove for placing the retaining spring is formed on the top of the dividing plate, and a groove is formed in the shelf groove.

[0018] As a preferred solution of the present invention, the feeding mechanism includes a vibrating plate for screening and conveying the retaining springs; and a guide trough connected to the vibrating plate for conveying the retaining springs screened from the vibrating plate.

[0019] As a preferred solution of the present utility model, the grabbing mechanism includes a grabbing support column, a grabbing positioning plate fixed on the grabbing support column, a seventh driving mechanism is arranged along the length direction of the grabbing positioning plate, a slide is slidably assembled on the seventh driving mechanism, a grabbing fixing plate is fixed on the slide, an eighth driving mechanism is fixed on the grabbing fixing plate, an eighth driving shaft of the eighth driving mechanism is connected to the eighth driving plate, a rotating cylinder fixing plate is fixed on the eighth driving plate, a rotating cylinder is fixed on the rotating cylinder fixing plate, a seventh clamping jaw and an eighth clamping jaw for grabbing the retaining spring and driving the retaining spring to rotate are arranged at the bottom of the rotating cylinder, a first guide groove and a second guide groove adapted to the retaining spring are formed on the outer sides of the seventh clamping jaw and the eighth clamping jaw, respectively, wherein a limiting baffle is formed on the eighth clamping jaw.

[0020] As a preferred solution of the present invention, the grabbing and positioning plate is also provided with a pushing mechanism for pushing the retaining spring onto the metering module, and the pushing mechanism includes a pushing fixing plate fixed on the grabbing and positioning plate, and a pushing cylinder is assembled on the pushing fixing plate. The pushing drive shaft of the pushing cylinder is connected to the pushing pressure plate, and a pushing pressure block is fixed at the bottom of the pushing pressure plate, and a pushing groove adapted to the retaining spring is formed at the bottom of the pushing pressure block.

[0021] As a preferred solution of the present invention, the positioning adjustment mechanism includes an adjustment support column, a ninth driving mechanism fixedly mounted on the adjustment support column, and an adjustment guide rail; an adjustment slider is slidably mounted on the adjustment guide rail, a cam pressure plate is mounted on the adjustment slider, and a guide inclined surface is formed on the outer side of the cam pressure plate. When the drainage tube in the drainage tube fixture and the ultrasonic metering component of the ultrasonic metering component fixture are assembled, the guide inclined surface abuts against the cam bearing.

[0022] As a preferred solution of the present invention, the ninth drive shaft of the ninth drive mechanism is connected to the adjustment guide block, and an adjustment guide groove is formed at the end of the adjustment guide block away from the ninth drive mechanism. The adjustment guide groove is located at the upper end of the connection between the drainage tube clamp and the metering module clamp; the adjustment guide groove is a V-shaped structure.

[0023] The beneficial effects of the utility model are:

[0024] The utility model has a simple structure and ingenious design. A plurality of positioning fixtures are provided for placing the metering module and the drainage tube to be assembled, wherein the drainage tube is clamped by the drainage tube grasping mechanism and then flipped, and then placed in the drainage tube fixture of the positioning fixture. The metering module is clamped by the metering module grasping mechanism and then placed in the metering module fixture of the positioning fixture. The retaining spring conveyed by the retaining spring conveying device is used to clamp the metering module and the drainage tube through the rotation of the rotary worktable to form a metering module. Finally, the metering module grasping mechanism is used to grasp the metering module and move it to the gas meter workpiece; thus, the assembly and movement of the entire ultrasonic gas meter metering module are stable and reliable, the positioning is accurate, the movement is fast and reliable, and the movement consistency is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a side view of the automated assembly mechanism of the ultrasonic gas meter metering module according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the automated assembly mechanism of the ultrasonic gas meter metering module according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the conversion of the gripping mechanism and the conveying mechanism of the metering module in the embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the connection structure between the base and the rotating workbench in an embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the rotary workbench according to an embodiment of the utility model;

[0030] Figure 6 This is a structural diagram of the grabbing mechanism of the metering module according to an embodiment of the present utility model;

[0031] Figure 7 This is a diagram showing the clamping device in use according to an embodiment of the present utility model;

[0032] Figure 8 This is a schematic structural diagram of the conveying mechanism of an embodiment of the utility model;

[0033] Figure 9 This is a schematic structural diagram of the rotating mechanism of an embodiment of the utility model;

[0034] Figure 10 This is a diagram showing the state of use of the rotating mechanism according to an embodiment of the present utility model;

[0035] Figure 11 This is a structural diagram of a clip spring conveying device according to an embodiment of the utility model;

[0036] Figure 12 This is a schematic structural diagram of the feeding mechanism of an embodiment of the utility model;

[0037] Figure 13 This is a structural diagram of the material dispensing mechanism according to an embodiment of the present utility model;

[0038] Figure 14 This is a partial schematic diagram of the material dispensing mechanism of an embodiment of the present utility model;

[0039] Figure 15 This is a partial state diagram of the material dispensing mechanism according to an embodiment of the present utility model;

[0040] Figure 16 This is a structural diagram of the grabbing mechanism of an embodiment of the utility model;

[0041] Figure 17 This is a diagram showing the gripping mechanism in use according to an embodiment of the present utility model;

[0042] Figure 18 This is a schematic structural diagram of the pushing mechanism of an embodiment of the utility model;

[0043] Figure 19 This is a schematic structural diagram of the feeding mechanism of an embodiment of the utility model;

[0044] Figure 20 This is a diagram showing the state of use of the feeding mechanism according to an embodiment of the present utility model;

[0045] Figure 21 This is an exploded view of the structure of the feeding mechanism of the embodiment of the utility model;

[0046] Figure 22 This is a schematic structural diagram of the drainage tube clamp according to an embodiment of the present utility model;

[0047] Figure 23 This is a schematic structural diagram of a metering module fixture according to an embodiment of the present utility model;

[0048] Figure 24 This is a structural diagram of the feeding adjustment mechanism of an embodiment of the utility model;

[0049] Figure 25 This is a diagram showing the use state of the feeding adjustment mechanism according to an embodiment of the present utility model;

[0050] Figure 26 This is a structural diagram of the grabbing mechanism of the metering module according to an embodiment of the present utility model;

[0051] Figure 27 This is a structural diagram of the drainage tube grabbing mechanism according to an embodiment of the present utility model; DETAILED DESCRIPTION

[0052] Example: Figure 1-2 As shown, Figure 1 This is a side view of the automated assembly mechanism of the ultrasonic gas meter metering module according to an embodiment of the present utility model; Figure 2 This is a schematic structural diagram of an automated assembly mechanism for an ultrasonic gas meter metering module according to an embodiment of the present invention; an automated assembly mechanism for an ultrasonic gas meter metering module comprises a base 1; a rotating worktable 2 fixedly mounted on the base 1; a metering module grasping mechanism 3 for grasping the metering module 100 in the rotating mechanism 4 and moving it onto a gas meter workpiece 200; a rotating mechanism 4 fixedly mounted on the base 1 for grasping and flipping the metering module 100 in the positioning fixture 6; and a conveying mechanism 5 for conveying the gas meter workpiece 200 to be processed. There are multiple positioning fixtures 6, which are arranged on the rotating workbench 2 and are used to assemble the metering module 300 and the drainage tube 400; the metering module grasping mechanism 7 is arranged on one side of the base 1; it is used to grasp the metering module 300 and place it on the positioning fixture 6; the drainage tube grasping mechanism 8 is arranged on one side of the base 1; it is used to grasp the drainage tube 400 and place it on the positioning fixture 6; the retaining spring conveying device 9 is arranged on one side of the base 1 and connected to the base 1, and is used to assemble the metering module 300 and the drainage tube 400 in the positioning fixture 6.

[0053] The drainage tube 400 and the metering module 300 in this embodiment are also transported by the conveying device and then grabbed by the corresponding manipulator; in this embodiment, a plurality of positioning fixtures 6 are set up to place the metering module 300 and the drainage tube 400 to be assembled, wherein the drainage tube 400 is clamped by the drainage tube grabbing mechanism 8 and then flipped, and then placed in the drainage tube fixture 61 of the positioning fixture 6, and the metering module 300 is clamped by the metering module grabbing mechanism 7 and then placed in the metering module fixture 62 of the positioning fixture 6. Through the rotation of the rotary workbench 2, the retaining spring conveyed by the retaining spring conveying device 9 is used to clamp the metering module 300 and the drainage tube 400 to form a metering module 100. Finally, the metering module grabbing mechanism 3 is used to grab the metering module 100 and move it to the gas meter workpiece 200; so that the assembly and movement of the entire ultrasonic gas meter metering module are stable and reliable, the positioning is accurate, the movement is fast and reliable, and the movement consistency is good.

[0054] like Figure 3-5 As shown, Figure 3 This is a schematic diagram of the conversion of the gripping mechanism and the conveying mechanism of the metering module in the embodiment of the present utility model; Figure 4 This is a schematic diagram of the connection structure between the base and the rotating workbench in an embodiment of the utility model; Figure 5 This is a schematic diagram of the structure of a rotary workbench according to an embodiment of the present utility model.

[0055] In this embodiment, the rotating workbench 2 includes a dividing plate 20, a motor 21 and a turntable 22. The dividing plate 20 is installed on the base 1 and is driven to rotate by the motor 21. A turntable 23 is provided at the top of the dividing plate 20, and the turntable 22 is installed on the turntable 23. A plurality of positioning fixtures 6 distributed in a circle and used to place the metering module 100 are provided at the top of the turntable 22.

[0056] The rotary workbench 2 provided in the present invention adopts the periodic motion of the indexing plate, which can continuously and uninterruptedly load multiple positioning fixtures 6 in a relatively short period of time, replacing the traditional manual loading with the existing automation, improving the efficiency and quality of production, reducing the production cost and labor cost, and ensuring that it is not easy to be damaged and the quality is guaranteed during the loading process, thereby improving the overall quality of the product, being beneficial to the development of the enterprise and the industry, and increasing the market share.

[0057] like Figure 6-7 As shown, Figure 6 This is a structural diagram of the grabbing mechanism of the metering module according to an embodiment of the present utility model; Figure 7This is a usage status diagram of the clamping device of an embodiment of the utility model; specifically, the metering module grasping mechanism 3 includes a column 30, a base 31, a first arm 32, a second arm 33 and a clamping device 800; the base 31 is fixed on the column 30, one end of the first arm 32 is horizontally rotatably connected to the base 31, and the other end of the first arm 32 is rotatably connected to one end of the second arm 33 through a rotating shaft 34, and a third arm 35 is vertically arranged at the other end of the second arm 33, and a manipulator shaft 36 is connected to the bottom of the third arm 35, and the manipulator shaft 36 is inserted into the third arm 35 in a vertical direction, and the manipulator shaft 36 can rotate relatively around the axis and one end of the manipulator shaft 36 extends out of the lower end of the third arm 35, and the manipulator shaft 36 can be extended and retracted up and down, and the lower end of the manipulator shaft 36 is connected to the clamping device 800.

[0058] The metering module grasping mechanism 3 is used to grasp the metering module 100 located in the rotating mechanism 4. The four-axis robot composed of the first arm 32, the second arm 33 and the third arm 35 is used to move, clamp and rotate the metering module 100 and assemble it in the gas meter workpiece 200 to complete the assembly of the metering module 100 and the gas meter workpiece 200.

[0059] The gripping device 800 includes a cylinder fixing plate 80, a cylinder support plate 81 vertically fixed to the bottom of the cylinder fixing plate 80, and a driving cylinder 85 fixed to one side of the cylinder support plate 81. The bottom of the driving cylinder 85 is provided with a first clamping jaw 86 and a second clamping jaw 87 for grasping the metering module 100, and a clamping groove 88 is formed between the first clamping jaw 86 and the second clamping jaw 87.

[0060] When it is necessary to clamp the metering module 100, the first jaw 86 and the second jaw 87 are separated by the driving cylinder 85, and the ends of the first jaw 86 and the second jaw 87 are located on the outside of the metering module 300 of the metering module 100. The driving cylinder 85 is used to clamp the first jaw 86 and the second jaw 87. The metering module 300 of the metering module 100 is located in the clamping groove 88. The four-axis robot composed of the first arm 32, the second arm 33 and the third arm 35 is used to move, clamp and rotate the metering module 100 and accurately position it on the gas meter workpiece 200.

[0061] A limit block 82 is fixedly provided at the bottom of the cylinder support plate 81, one end of the limit block 82 extends into the clamping groove 88, and the limit block 82 is located at the top of the clamping groove 88; the limit block 82 is set to ensure that when the first clamping jaw 86 and the second clamping jaw 87 clamp the metering module 100, the metering module 300 of the metering module 100 touches the top of the clamping groove 88, thereby causing damage to the metering module 100, and the limit block 82 can play a buffering role.

[0062] An upper reinforcing rib 83 and a lower reinforcing rib 84 are symmetrically fixed to one side of the cylinder support plate 81 away from the driving cylinder 85; wherein, the upper reinforcing rib 83 is fixed at the connection between the cylinder fixing plate 80 and the cylinder support plate 81, and the lower reinforcing rib 84 is fixed at the connection between the cylinder support plate 81 and the limit block 82; the lower reinforcing rib 84 is fixed at the connection between the cylinder support plate 81 and the limit block 82; the upper reinforcing rib 83 and the lower reinforcing rib 84 are provided to improve the structural strength and overall firmness of the metering module clamping device 800, further ensuring safety in use.

[0063] like Figure 8 As shown; the conveying mechanism 5 includes a conveying frame 50, a movable pallet 52 and a fixed frame 53; a slide rail 51 is arranged on the conveying frame 50, the movable pallet 52 is slidably assembled on the slide rail 51, and the fixed frame 53 is fixed on the movable pallet 52, and the fixed frame 53 is used to fix the gas meter workpiece 200 to be processed; a plurality of gas meter workpieces 200 can be provided, which are arranged in sequence on the slide rail 51 of the conveying frame 50.

[0064] like Figure 9-10 As shown; Figure 9 This is a schematic structural diagram of the rotating mechanism of an embodiment of the utility model; Figure 10 This is a diagram of the usage status of the rotating mechanism of an embodiment of the utility model; the rotating mechanism 4 includes a base plate 40, support plates 41 fixed vertically on both sides of the base plate 40, an upper plate 42 fixed on the two support plates 41, and a first driving mechanism 43 is installed at the bottom of the upper plate 42, and the first driving shaft 44 of the first driving mechanism 43 passes through the upper plate 42 and is connected to the top plate 45; a guide rail 46 is fixed on the top plate 45, and a sliding frame 47 is slidably connected to the guide rail 46; a rotating cylinder fixing block 49 is fixed on the sliding frame 47; a second driving mechanism 48 for driving the sliding frame 47 to slide back and forth along the guide rail 46 is provided on one side of the rotating cylinder fixing block 49; a third driving mechanism 10 is fixed on the other side of the rotating cylinder fixing block 49; a rotating arm 11 is installed on the third driving mechanism 10, and the third driving mechanism 10 is used to drive the rotating arm 11 to rotate, and a clamping assembly 900 is fixed at the end of the rotating arm 11.

[0065] The first drive mechanism 43, the second drive mechanism 48 and the third drive mechanism 10 provided in this embodiment make the motion trajectory of the metering module 100 more precise, prevent offset, and improve the accuracy of assembly; moreover, in this embodiment, the third drive mechanism 10 drives the rotation angle of the rotating arm 11 to be horizontal and vertical directions.

[0066] At the same time, the clamping assembly 900 includes a fourth driving mechanism 12, and the end of the fourth driving mechanism 12 is equipped with relatively arranged clamping jaws 13, and the inner side of the clamping jaws 13 is formed with a clamping guide groove 14. The fourth driving mechanism 12 drives the two clamping jaws 13 to move toward their respective corresponding clamping guide grooves 14; it is used to stably clamp the metering module 100.

[0067] A vertical plate 15 is vertically fixed to the upper plate 42 near the clamping assembly 900, and a guide block 16 is fixed on the vertical plate 15. The guide block 16 is located at the lower end of the clamping jaw 13, and a guide protrusion 17 is formed on the guide block 16. A guide slope 18 is formed on the outer side of the guide block 16 and the guide protrusion 17. When the clamping jaw 13 of the rotating mechanism 4 is used to clamp the metering module 100 located in the accommodating cavity 62, the guide slope 18 abuts against the cam bearing 65.

[0068] By adopting the above scheme, when the clamping assembly 900 clamps the metering module 100, the guide bevel 18 and the cam bearing 69 contact each other, increasing the contact area between the two and improving its stability. The fourth driving mechanism 12 drives the clamping claw 13 to extend into the drainage tube clamp 61 to clamp the drainage tube 400 of the metering module 100, and then moves the metering module 100 horizontally upward. The third driving mechanism 10 drives the rotating arm 11 to rotate 90°, so that the metering module 100 is in a vertical state and is grasped by the metering module grasping mechanism 3.

[0069] The base 1 is also provided with a barcode reader for reading the barcode of the metering module 100, which is arranged corresponding to the rotating mechanism 4. Through the provided barcode reader, when the barcode reader detects the product barcode of the metering module 100 on the rotating mechanism 4, better product tracking is achieved, the degree of automation is high, the operation process is free from manual intervention, and a fully automated assembly process is realized.

[0070] like Figure 11 As shown; Figure 11Schematic diagram of the structure of the spring conveying device of the embodiment of the present utility model; the spring conveying device 9 includes a feeding mechanism 9-1, which is fixed on the feeding frame 9-5 and is used to arrange and convey multiple springs 900 in an orderly manner; a dividing mechanism 9-7, which is fixed on the dividing base 9-4 and is connected to the feeding mechanism 9-1, is used to push and flip the springs 900 in the feeding mechanism 9-1 in sequence; a grabbing mechanism 9-3, which is fixed on the dividing base 9-4 and is used to grab the springs 900 in the dividing mechanism 9-7 and move them to the positioning fixture 6; in this embodiment, A plurality of retaining rings 900 are arranged in order and conveyed to the dividing mechanism 9-7 by the feeding mechanism 9-1, and the dividing mechanism 9-7 is used to adjust and flip the retaining rings 900 in the feeding mechanism 9-1; then, the grabbing mechanism 9-3 grabs the retaining rings 900 in the dividing mechanism 9-7 and moves it to the positioning fixture 6; a plurality of metering modules 300 and drainage tubes 400 that need to be assembled are placed in the positioning fixture 6 in turn, and are rotated to the positions of the positioning adjustment mechanism 9-9 and the grabbing mechanism 9-3 by the rotating workbench 2, and the cam bearing 69 is driven by the cam pressure plate 94 in the positioning adjustment mechanism 9-9 to realize the assembly of the metering module 300 and the drainage tube 400, and finally, the retaining ring 900 is pushed to the connection between the metering module 300 and the drainage tube 400 in the positioning fixture 6 by the pushing mechanism 9-8, completing the entire automated assembly, which is simple, stable and reliable, and has good assembly consistency.

[0071] like Figure 12 As shown; Figure 12 This is a schematic diagram of the feeding mechanism structure of an embodiment of the utility model; the feeding mechanism 9-1 includes a vibrating plate 910 for screening and conveying the retaining spring 900; a guide groove 911, connected to the vibrating plate 910, for conveying the retaining spring 900 screened from the vibrating plate 910.

[0072] In the above setting, the vibration plate 910 is an auxiliary feeding device that can arrange multiple spring clips 900 products in an orderly manner and transport the products; after the vibration plate 910 is connected to the power supply and turned on, the spring clip 900 is vibrated and transported by the vibration plate 910, and will enter the arc guide rail of the vibration plate 910, and then continue to move. As the spring clip 900 moves, it reaches the position of the guide groove 911.

[0073] The feeding mechanism 9-1 also includes a direct vibration feeder 915, which is located below the guide trough 911 and fixedly mounted on the feeding frame 9-5, and the guide trough 911 is fixedly mounted on the direct vibration feeder 915; the direct vibration feeder 915 is fixedly mounted on the feeding frame 9-5; in the above setting, the direct vibration feeder 915 is used to make the retaining spring 900 vibrate and move on the guide trough 911, so as to avoid the situation where the vibration conveying effect of the vibration disk 910 is weakened when the retaining spring 900 is on the guide trough 911, resulting in the retaining spring 900 being unable to continue to move; at the same time, the direct vibration feeder 915 vibrates the guide trough 911, so that the retaining spring 900 moves forward, and the direct vibration feeder 915 can accurately control the forward rhythm of the guide trough 911, so that the assembly rhythm is more accurate.

[0074] like Figure 13-15 As shown; Figure 13 This is a structural diagram of the material dispensing mechanism according to an embodiment of the present utility model; Figure 14 This is a partial schematic diagram of the material dispensing mechanism of an embodiment of the present utility model; Figure 15 It is a partial state diagram of the material-dividing mechanism of an embodiment of the utility model; specifically, the material-dividing mechanism 9-7 includes a material-dividing support plate 70, on which a fifth driving mechanism 71 is fixedly provided, and a fifth driving shaft 72 of the fifth driving mechanism 71 is connected to a driving plate 73, on which a sliding cylinder fixing plate 74 is fixedly provided, on which a first cylinder fixing plate 75 is fixedly provided, on which a sixth driving mechanism 76 is fixedly provided, and on which a limiting shield 79 is connected; the limiting shield 79 forms a limiting groove 740 along the length direction, in which a cylinder push block 78 is assembled, and a sixth driving shaft 77 of the sixth driving mechanism 76 passes through the limiting groove 740 and is connected to the cylinder push block 78, on which a first rotating arm 741 is connected, and on which a material-dividing plate 742 is assembled.

[0075] The retaining spring 900 that needs to be processed and assembled can be transported in sequence to the dividing plate 742 of the dividing mechanism 9-7 through the feeding mechanism 9-1. A baffle 745 is fixed on the side of the first cylinder fixing plate 75 away from the feeding mechanism 9-1, and the top of the baffle 745 is higher than the top of the dividing plate 742; the above scheme can prevent the retaining spring 900 from falling from the dividing plate 742 during the movement, thereby ensuring the safety of use.

[0076] The fifth driving mechanism 71 can adjust the lateral displacement by moving the fifth driving shaft 72. Supports 743 are symmetrically fixed on the first cylinder fixing plate 75. A rotating shaft 744 is provided between the two supports 743, and the rotating shaft 744 is sleeved on the rotating arm 741; the sixth driving shaft 77 of the sixth driving mechanism 76 drives the cylinder push block 78 to move upward, so that the first rotating arm 741 drives the dividing plate 742 to rotate; and then the retaining spring 900 located in the dividing plate 742 moves from the horizontal to the vertical direction. Since a shelf groove 746 for placing the retaining spring 900 is formed at the top of the dividing plate 742, and a groove 747 is formed in the shelf groove 746, the seventh clamping jaw 937 and the eighth clamping jaw 938 at the bottom of the grasping mechanism 9-3 can pass through the interior of the retaining spring 900 and extend into the groove 747 to grasp the retaining spring 900.

[0077] like Figure 16-18 As shown; the grabbing mechanism 9-3 includes a grabbing support column 930, a grabbing positioning plate 931 fixed on the grabbing support column 930, a seventh driving mechanism 932 is arranged on the grabbing positioning plate 931 along its length direction, the seventh driving mechanism 932 is slidably equipped with a slide 933, a grabbing fixing plate 934 is fixed on the slide 933, an eighth driving mechanism 912 is fixed on the grabbing fixing plate 934, an eighth driving mechanism 912, an eighth driving shaft 913 of the eighth driving mechanism 912 is connected to the eighth driving plate 914, a rotating cylinder fixing plate 935 is fixed on the eighth driving plate 914, a rotating cylinder fixing plate 935 is fixed on the rotating cylinder fixing plate 936, and a seventh clamping jaw 937 and an eighth clamping jaw 938 for grabbing the retaining ring 900 and driving the retaining ring 900 to rotate are arranged at the bottom of the rotating cylinder 936.

[0078] The slide 933 in this embodiment is driven to move left and right by the seventh drive mechanism 932, and is used to move the retaining ring 900 that needs to be assembled from the material distribution mechanism 9-7 to the positioning fixture 6. The rotating cylinder 936 can rotate relative to the axis and drive the seventh clamp 937 and the eighth clamp 938 to rotate. The rotating cylinder 936 moves through the eighth drive shaft 913 of the eighth drive mechanism 912, and can move up and down. The seventh clamp 937 and the eighth clamp 938 are used to clamp the retaining ring 900 that needs to be assembled.

[0079] A first guide groove 937 - 1 and a second guide groove 938 - 1 adapted to the clamping spring 900 are formed on the outer sides of the seventh clamping jaw 937 and the eighth clamping jaw 938 , respectively. A limit stopper 939 is formed on the eighth clamping jaw 938 .

[0080] The first guide groove 937-1 and the second guide groove 938-1 are set so that the two sides of the retaining spring 900 can be just clamped in the first guide groove 937-1 and the second guide groove 938-1, so as to prevent the retaining spring 900 from falling off the seventh clamping jaw 937 and the eighth clamping jaw 938 during the movement. At the same time, a limiting baffle 939 is formed on the eighth clamping jaw 938 to limit the retaining spring 900 during the process of clamping the retaining spring 900.

[0081] The grabbing and positioning plate 931 is also provided with a pushing mechanism 9-8 for pushing the retaining spring 900 to the metering module 100. The pushing mechanism 9-8 includes a pushing fixing plate 980 fixed on the grabbing and positioning plate 931. The pushing fixing plate 980 is equipped with a pushing cylinder 981. The pushing drive shaft 982 of the pushing cylinder 981 is connected to the pushing pressure plate 983. A pushing pressure block 984 is fixed to the bottom of the pushing pressure plate 983. A pushing groove 985 adapted to the retaining spring 900 is formed at the bottom of the pushing pressure block 984.

[0082] The pushing drive shaft 982 of the pushing cylinder 981 drives the pushing pressure block 984 to move up and down, so as to push the retaining spring 900 onto the positioning fixture 6, so that the drainage tube 400 and the metering module 300 in the positioning fixture 6 are assembled.

[0083] like Figure 19-23 As shown, Figure 19 This is a schematic structural diagram of the feeding mechanism of an embodiment of the utility model; Figure 20 This is a diagram showing the state of use of the feeding mechanism according to an embodiment of the present utility model; Figure 21 This is an exploded view of the structure of the feeding mechanism of the embodiment of the utility model; Figure 22 This is a schematic structural diagram of the drainage tube clamp according to an embodiment of the present utility model; Figure 23 It is a structural schematic diagram of the metering module clamp of an embodiment of the present utility model; the positioning clamp 6 includes a clamp base plate 60, a drainage tube clamp 61 and a metering module clamp 62 respectively arranged on the clamp base plate 60, a track 63 is fixed on the clamp base plate 60, a slider 64 is slidably connected to the track 63, the slider 64 is fixed to the bottom of the drainage tube clamp 61, a positioning hole 65 is formed on the clamp base plate 60, a positioning rod 66 is assembled in the positioning hole 65, a positioning groove 67 is formed at the bottom of the drainage tube clamp 61, one end of the positioning rod 66 is located in the positioning hole 65, and the other end extends into the positioning groove 67; a cam bearing fixing plate 68 is fixed to the bottom of the drainage tube clamp 61 close to the positioning adjustment mechanism 9-9, and a cam bearing 69 is installed on the cam bearing fixing plate 68.

[0084] The metering module fixture 62 in this embodiment is fixed on the track 63, and the drainage tube fixture 61 can slide along the track 63 through the slider 64. However, one end of the positioning rod 66 is located in the positioning hole 65 of the fixture base plate 60, and the other end of the positioning rod 66 extends into the positioning groove 67 and moves along the positioning groove 67. That is to say, the sliding distance of the drainage tube fixture 61 is almost the length of the positioning groove 67. A cam bearing fixing plate 68 is fixed to the bottom of the side of the drainage tube fixture 61 close to the positioning adjustment mechanism 9-9, and a cam bearing 69 is installed on the cam bearing fixing plate 68; and the sliding of the drainage tube fixture 61 is achieved by driving the cam bearing 69 through the cam pressure plate 94 on the positioning adjustment mechanism 9-9.

[0085] like Figures 24-25 As shown, Figure 24 This is a structural diagram of the feeding adjustment mechanism of an embodiment of the utility model; Figure 25 This is a diagram of the usage status of the feeding adjustment mechanism of an embodiment of the utility model; the positioning adjustment mechanism 9-9 includes an adjustment support column 90, a ninth driving mechanism 91 fixedly mounted on the adjustment support column 90, and an adjustment guide rail 92; an adjustment slider 93 is slidably mounted on the adjustment guide rail 92, and a cam pressure plate 94 is mounted on the adjustment slider 93. A guide slope 95 is formed on the outer side of the cam pressure plate 94. When the drainage tube 101 in the drainage tube fixture 61 and the ultrasonic metering component 102 of the ultrasonic metering component fixture 62 are assembled, the guide slope 95 abuts against the cam bearing 69.

[0086] The ninth driving shaft 96 of the ninth driving mechanism 91 is connected to the adjustment guide block 97. An adjustment guide groove 98 is formed at the end of the adjustment guide block 97 away from the ninth driving mechanism 91. The adjustment guide groove 98 is located at the upper end of the connection between the drainage tube clamp 61 and the metering module clamp 62; the adjustment guide groove 98 is a V-shaped structure.

[0087] When the pushing mechanism 9-8 needs to push the retaining spring 900 to the drainage tube 400 and the metering module 300 in the positioning fixture 6, we can adjust the adjustment guide block 97 in the positioning adjustment mechanism 9-9 so that the adjustment guide groove 98 on the adjustment guide block 97 is located at the upper end of the retaining spring 900. The set adjustment guide groove 98 is equivalent to playing a guiding role, so that the pushing mechanism 9-8 pushes the retaining spring 900 more stably and safely. Moreover, the adjustment guide block 97 is placed on the drainage tube fixture 61 and the metering module fixture 62 of the positioning fixture 6, and the adjustment guide groove 98 is located at the connection between the drainage tube 400 and the metering module fixture 62. The adjustment guide groove 98 has a V-shaped structure, which improves the stability and safety of the assembly of the two.

[0088] The metering module 100 includes a metering module 300 and a drainage tube 400 . The drainage tube 400 and the metering module 300 are assembled and locked by a retaining spring 900 .

[0089] like Figure 26 As shown, Figure 26 It is a structural schematic diagram of the metering module grasping mechanism of an embodiment of the present utility model; the metering module grasping mechanism 7 includes a metering module manipulator 24, and the lower end of the metering module manipulator 24 is connected to a metering module clamping device 25; the metering module clamping device 25 includes a metering module connecting plate 26, a metering module support plate 27 vertically fixed to the bottom of the metering module connecting plate 26, and a metering module driving cylinder 28 is fixed on one side of the metering module support plate 27; a third clamping jaw 28-1 and a fourth clamping jaw 28-2 for grasping the metering module 300 are arranged at the bottom of the metering module driving cylinder 28, and a metering module clamping groove 29 is formed between the third clamping jaw 28-1 and the fourth clamping jaw 28-2; a third limit block 28-3 and a fourth limit block 28-4 are respectively fixed at the bottom of the third clamping jaw 28-1 and the fourth clamping jaw 28-2; the third limit block 28-3 and the fourth limit block 28-4 are both located in the clamping groove 29.

[0090] The metering module grabbing mechanism 7 provided in this embodiment is used to grab the metering module 300 to be assembled, and the metering module manipulator 24 is used to clamp, move, and assemble the metering module 300 into the metering module fixture 62 of the positioning fixture 6 .

[0091] like Figure 27 As shown, Figure 27 This is a structural schematic diagram of the drainage tube grasping mechanism of an embodiment of the utility model; the drainage tube grasping mechanism 8 includes a drainage tube manipulator 54, and the lower end of the drainage tube manipulator 54 is connected to a drainage tube clamping device 55; the drainage tube clamping device 55 includes a drainage tube support plate 56, and a drainage tube driving cylinder 57 is fixedly provided on one side of the drainage tube support plate 56, and a drainage tube rotating arm 58 is installed on the other side of the drainage tube support plate 56. The drainage tube driving shaft of the drainage tube driving cylinder 57 passes through the drainage tube support plate 56 and is connected to the drainage tube rotating arm 58. The drainage tube driving cylinder 57 is used to drive the drainage tube rotating arm 58 to rotate, and the end of the drainage tube rotating arm 58 is provided with a fifth clamping jaw 58-1 and a sixth clamping jaw 58-2 for grasping the drainage tube 400; the outer sides of the fifth clamping jaw 58-1 and the sixth clamping jaw 58-2 are respectively fixed with a fifth limit block 58-3 and a sixth limit block 58-4.

[0092] The drainage tube grabbing mechanism 8 provided in this embodiment is used to grab the drainage tube 400 that needs to be assembled, and the drainage tube manipulator 54 is used to clamp, flip, move, etc. the drainage tube 400 and assemble it in the drainage tube fixture 61 of the positioning fixture 6, providing convenience for subsequent assembly with the metering module 300.

Claims

1. An automated assembly mechanism for an ultrasonic gas meter metering module, characterized in that: include Base (1); A rotating workbench (2) is fixed on the base (1); A metering module grabbing mechanism (3) is used to grab the metering module (100) in the rotating mechanism (4) and move it onto the gas meter workpiece (200); A rotating mechanism (4) is fixedly mounted on the base (1) and is used to clamp and flip the metering module (100) in the positioning fixture (6); A conveying mechanism (5) for conveying a gas meter workpiece (200) to be processed; A plurality of positioning fixtures (6) are provided and arranged on the rotary workbench (2) for assembling the metering module (300) and the drainage tube (400); A metering module grabbing mechanism (7) is arranged on one side of the base (1); it is used to grab the metering module (300) and place it on the positioning fixture (6); A drainage tube grabbing mechanism (8) is arranged on one side of the base (1); it is used to grab the drainage tube (400) and place it on the positioning fixture (6); The clamping spring conveying device (9) is arranged on one side of the base (1) and connected to the base (1), and is used to assemble the metering module (300) and the drainage tube (400) in the positioning fixture (6).

2. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The positioning fixture (6) includes a fixture base plate (60), a drainage tube fixture (61) and a metering module fixture (62) respectively arranged on the fixture base plate (60), a track (63) fixed on the fixture base plate (60), a slider (64) slidably connected to the track (63), and the slider (64) fixed to the bottom of the drainage tube fixture (61). A positioning hole (65) is formed on the fixture base plate (60), a positioning rod (66) is installed in the positioning hole (65), and a positioning groove (67) is formed at the bottom of the drainage tube fixture (61), one end of the positioning rod (66) is located in the positioning hole (65), and the other end extends into the positioning groove (67); a cam bearing fixing plate (68) is fixed on the bottom of the drainage tube fixture (61) near the positioning adjustment mechanism (9-9), and a cam bearing (69) is installed on the cam bearing fixing plate (68).

3. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The metering module grasping mechanism (3) comprises a column (30), a base (31), a first arm (32), a second arm (33) and a clamping device (800); the base (31) is fixed on the column (30); one end of the first arm (32) is connected to the base (31) by transverse rotation; the other end of the first arm (32) is connected to one end of the second arm (33) by rotation through a rotating shaft (34); a third arm (35) is vertically arranged at the other end of the second arm (33); a manipulator shaft (36) is connected to the bottom of the third arm (35); the manipulator shaft (36) is inserted into the third arm (35) in a vertical direction; the manipulator shaft (36) can rotate relative to the axis and one end of the manipulator shaft (36) extends out of the lower end of the third arm (35); the manipulator shaft (36) can be extended up and down; and the lower end of the manipulator shaft (36) is connected to the clamping device (800).

4. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 3, characterized in that: The clamping device (800) includes a cylinder fixing plate (80), a cylinder support plate (81) fixed vertically to the bottom of the cylinder fixing plate (80), and a driving cylinder (85) fixed on one side of the cylinder support plate (81); a first clamping jaw (86) and a second clamping jaw (87) for grabbing the metering module (100) are arranged at the bottom of the driving cylinder (85), and a clamping groove (88) is formed between the first clamping jaw (86) and the second clamping jaw (87); a limit block (82) is fixed on the bottom of the cylinder support plate (81), one end of the limit block (82) extends into the clamping groove (88), and the limit block (82) is located at the top of the clamping groove (88); the cylinder support plate (81) An upper reinforcing rib (83) and a lower reinforcing rib (84) are symmetrically fixed on one side away from the driving cylinder (85); wherein the upper reinforcing rib (83) is fixed at the connection between the cylinder fixing plate (80) and the cylinder support plate (81), and the lower reinforcing rib (84) is fixed at the connection between the cylinder support plate (81) and the limit block (82); the conveying mechanism (5) comprises a conveying frame (50), a movable tray (52) and a fixed frame (53); a slide rail (51) is arranged on the conveying frame (50), the movable tray (52) is slidably assembled on the slide rail (51), and the fixed frame (53) is fixed on the movable tray (52), and the fixed frame (53) is used to fix the gas meter workpiece (200) to be processed.

5. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The rotating mechanism (4) comprises a bottom plate (40), support plates (41) fixedly arranged on both sides of the bottom plate (40), an upper plate (42) fixedly arranged on the two support plates (41), a first driving mechanism (43) being mounted on the bottom of the upper plate (42), a first driving shaft (44) of the first driving mechanism (43) passing through the upper plate (42) and connected to the top plate (45); a guide rail (46) being fixedly arranged on the top plate (45), a sliding frame (47) being slidably connected to the guide rail (46); a rotating cylinder fixing block (49) being fixedly arranged on the sliding frame (47); a second driving mechanism (48) for driving the sliding frame (47) to slide back and forth along the guide rail (46) being provided on one side of the rotating cylinder fixing block (49); a third driving mechanism (10) being fixedly arranged on the other side of the rotating cylinder fixing block (49); a rotating arm (11) being mounted on the third driving mechanism (10), the third driving mechanism (10) being used to drive the rotating arm (11) to rotate, and a clamping assembly being fixedly arranged on the end of the rotating arm (11). (500); the clamping assembly (500) includes a fourth driving mechanism (12), the end of the fourth driving mechanism (12) is equipped with relatively arranged clamping claws (13), the inner side of the clamping claws (13) is formed with a clamping guide groove (14), and the fourth driving mechanism (12) drives the two clamping claws (13) to move toward the respective corresponding clamping guide grooves (14); used for stably clamping the metering module (100); the upper plate (42) is close to the side of the clamping assembly (500) A vertical plate (15) is fixedly provided, and a guide block (16) is fixedly provided on the vertical plate (15). The guide block (16) is located at the lower end of the clamping jaw (13). A guide protrusion (17) is formed on the guide block (16). A guide inclined surface (18) is formed on the outer sides of the guide block (16) and the guide protrusion (17). When the clamping jaw (13) of the rotating mechanism (4) is used to clamp the metering module (100) located in the positioning fixture (6), the guide inclined surface (18) abuts against the cam bearing (69).

6. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The metering module grasping mechanism (7) includes a metering module manipulator (24), the lower end of which is connected to a metering module clamping device (25); the metering module clamping device (25) includes a metering module connecting plate (26), a metering module support plate (27) vertically fixed to the bottom of the metering module connecting plate (26), a metering module driving cylinder (28) fixed on one side of the metering module support plate (27); and a useful A metering module clamping groove (29) is formed between the third clamping jaw (28-1) and the fourth clamping jaw (28-2) for grasping the metering module (300); a third limiting block (28-3) and a fourth limiting block (28-4) are fixedly provided at the bottom of the third clamping jaw (28-1) and the fourth clamping jaw (28-2), respectively; and the third limiting block (28-3) and the fourth limiting block (28-4) are both located in the metering module clamping groove (29).

7. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The drainage tube grasping mechanism (8) comprises a drainage tube manipulator (54), the lower end of which is connected to a drainage tube clamping device (55); the drainage tube clamping device (55) comprises a drainage tube support plate (56), one side of which is fixedly provided with a drainage tube driving cylinder (57), and the other side of which is provided with a drainage tube rotating arm (58), the drainage tube driving shaft of the drainage tube driving cylinder (57) passing through the drainage tube driving shaft. The drainage tube support plate (56) is connected to the drainage tube rotating arm (58), and the drainage tube driving cylinder (57) is used to drive the drainage tube rotating arm (58) to rotate. The end of the drainage tube rotating arm (58) is provided with a fifth clamping jaw (58-1) and a sixth clamping jaw (58-2) for grasping the drainage tube (400); the outer sides of the fifth clamping jaw (58-1) and the sixth clamping jaw (58-2) are respectively fixed with a fifth limit block (58-3) and a sixth limit block (58-4).

8. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 1, characterized in that: The retaining spring conveying device (9) comprises a feeding mechanism (9-1) fixedly mounted on a feeding frame (9-5) and used for orderly arranging and conveying a plurality of retaining springs (900); a dividing mechanism (9-7) fixedly mounted on a dividing base (9-4) and connected to the feeding mechanism (9-1) and used for sequentially pushing and flipping the retaining springs (900) in the feeding mechanism (9-1); A grabbing mechanism (9-3) is fixedly mounted on the material distribution base (9-4) and is used to grab the retaining spring (900) in the material distribution mechanism (9-7) and move it to the positioning fixture (6); The material distribution mechanism (9-7) comprises a material distribution support plate (70), a fifth driving mechanism (71) is fixedly provided on the material distribution support plate (70), a fifth driving shaft (72) of the fifth driving mechanism (71) is connected to the driving plate (73), a sliding cylinder fixing plate (74) is fixedly provided on the driving plate (73), a first cylinder fixing plate (75) is fixedly provided on the sliding cylinder fixing plate (74), a sixth driving mechanism (76) is fixedly provided on the first cylinder fixing plate (75), and the sixth driving mechanism (76) is connected to a limiting shield (79); the limiting shield (79) forms a limiting groove ( 740), a cylinder push block (78) is installed in the limiting groove (740), a sixth drive shaft (77) of the sixth drive mechanism (76) passes through the limiting groove (740) and is connected to the cylinder push block (78), a first rotating arm (741) is connected to the cylinder push block (78), and a material separation plate (742) is installed on the first rotating arm (741); the feeding mechanism (9-1) includes a vibration plate (910) for screening and conveying the retaining spring (900); and a guide groove (911) is connected to the vibration plate (910) and is used to convey the retaining spring (900) screened from the vibration plate (910).

9. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 8, characterized in that: The grabbing mechanism (9-3) comprises a grabbing support column (930), a grabbing positioning plate (931) fixed on the grabbing support column (930), a seventh driving mechanism (932) arranged on the grabbing positioning plate (931) along its length direction, a slide (933) slidably mounted on the seventh driving mechanism (932), a grabbing fixing plate (934) fixed on the slide (933), an eighth driving mechanism (912) fixed on the grabbing fixing plate (934), an eighth driving shaft (913) of the eighth driving mechanism (912) connected to the eighth driving plate (914), and the eighth driving plate ( 914) is fixedly provided with a rotating cylinder fixing plate (935), a rotating cylinder (936) is fixedly provided on the rotating cylinder fixing plate (935), a seventh clamping jaw (937) and an eighth clamping jaw (938) for grabbing the retaining spring (900) and driving the retaining spring (900) to rotate are arranged at the bottom of the rotating cylinder (936), a first guide groove (937-1) and a second guide groove (938-1) adapted to the retaining spring (900) are formed on the outer sides of the seventh clamping jaw (937) and the eighth clamping jaw (938), respectively, wherein a limit baffle (939) is formed on the eighth clamping jaw (938).

10. The automatic assembly mechanism of an ultrasonic gas meter metering module according to claim 9, characterized in that: The grabbing and positioning plate (931) is further provided with a pushing mechanism (9-8) for pushing the retaining spring (900) onto the metering module (100). The pushing mechanism (9-8) includes a pushing fixing plate (980) fixedly mounted on the grabbing and positioning plate (931). A pushing cylinder (981) is mounted on the pushing fixing plate (980). A pushing drive shaft (982) of the pushing cylinder (981) is connected to a pushing pressure plate (983). A pushing pressure block (984) is fixedly mounted at the bottom of the pushing pressure plate (983). A pushing groove (985) adapted to the retaining spring (900) is formed at the bottom of the pushing pressure block (984).

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