A positioning fixture for ultrasonic gas meter module aging

Abstract

The present application relates to the technical field of product positioning tooling, and provides a positioning fixture for ultrasonic gas meter module aging, including a substrate and two groups of positioning modules arranged on the surface of the substrate, the two groups of positioning modules are arranged side by side along the extension direction of the substrate; each positioning module includes a plurality of positioning units, which are arranged alternately between the positioning units of the two groups of positioning modules; wherein the positioning unit includes a support seat fixed to the surface of the substrate and two limiting columns respectively arranged on both sides of the support seat, and a placement station for placing the gas meter module is formed between the two limiting columns. A positioning fixture for ultrasonic gas meter module aging in the present application can make the gas meter module more compact when placed on the positioning fixture, and reduce the possibility of accidental falling of the gas meter module during transfer.

Description

Technical Field

[0001] The present application relates to the technical field of product positioning tooling, and in particular to a positioning fixture for aging of ultrasonic gas meter modules. Background Art

[0002] Ultrasonic gas meter is a new type of gas meter, which is widely used in gas metering in household, commercial and industrial fields. In the household field, it can provide residents with accurate gas consumption data to help them better manage gas use; in the commercial and industrial fields, ultrasonic gas meter can provide enterprises with more accurate and reliable gas metering data, which helps enterprises optimize energy distribution and reduce operating costs. Ultrasonic gas meter module is the main functional component of ultrasonic gas meter; during manufacturing, gas meter module needs to undergo aging operation to ensure the stability and reliability of product performance and to discover and solve potential quality problems in advance.

[0003] Before placing the gas meter module in the aging box, the gas meter module can be placed on a positioning jig to facilitate the transfer and batch operation of the gas meter module. However, since the gas meter module is a special-shaped component, it is often placed in a disorderly manner when placed directly on a positioning jig, resulting in a small number of gas meter modules that can be placed on a single positioning jig. In addition, during the transfer process, the gas meter module may accidentally fall due to offset. After the gas meter module falls or hits, its performance will be adversely affected, which is not conducive to maintaining good product quality and needs to be improved. Summary of the invention

[0004] Based on this, the present application provides a positioning jig for ultrasonic gas meter module aging, which can make the gas meter module more compact when placed on the positioning jig and reduce the possibility of accidental falling of the gas meter module during transfer.

[0005] The present application provides a positioning fixture for ultrasonic gas meter module aging, which adopts the following technical solution:

[0006] A positioning jig for ultrasonic gas meter module aging, comprising a substrate and two groups of positioning modules arranged on the surface of the substrate, the two groups of positioning modules are arranged side by side along the extension direction of the substrate; each of the positioning modules comprises a plurality of positioning units, which are arranged alternately between the positioning units of the two groups of positioning modules; wherein the positioning unit comprises a support seat fixed to the surface of the substrate and two limiting columns respectively arranged on both sides of the support seat, a placement station for placing the gas meter module is formed between the two limiting columns.

[0007] By adopting the above technical solution, when performing the aging operation of the gas meter module, each gas meter module is placed in each positioning unit respectively; the outer shell of the special-shaped gas meter module usually has an air inlet connector at the large end and an air outlet connector at the small end. When the gas meter module is placed in the placement station of the support seat, the junction of the air inlet connector and the air outlet connector can be limited between the two limiting columns, thereby limiting the lateral displacement of the gas meter module on the substrate, reducing the risk of accidental drop of the gas meter module, and helping to keep the gas meter module in good product quality. In addition, when the gas meter module is placed in the placement station, the air inlet connector of the gas meter module can be partially located in the area between adjacent positioning units, so that the air inlet connectors of the large ends of the two adjacent gas meter modules are closer; and the air outlet end of the small end of the gas meter module can extend between the two positioning units of another group of positioning modules, and be staggered with the two adjacent gas meter modules on the opposite side, so that multiple gas meter modules are placed in the positioning fixture more compactly, and the aging operation of most gas meter modules can be completed in batches, improving the overall operation efficiency.

[0008] Optionally, the outer peripheral wall of each of the limit columns is sleeved with a limit block, and the support seat is provided with a driving mechanism. When the gas meter module is placed in the placement position, the driving mechanism forces the limit block to move into the placement position and block the top of the gas meter module.

[0009] By adopting the above-mentioned technical solution, after the gas meter module is placed in place, the limit block can be transferred to the placement position under the action of the driving mechanism and block the top of the gas meter module, thereby further limiting the gas meter module and reducing the accidental falling of the gas meter module due to shaking during the transfer of the substrate, thereby effectively improving the safety of the substrate transfer process.

[0010] Optionally, the driving mechanism includes a lifting plate, a supporting spring, a linkage assembly and a locking assembly. The lifting plate is slidably installed on the top of the support seat, and the supporting spring is arranged between the lifting plate and the support seat. The supporting spring normally forces the lifting plate to lift off the support seat; the linkage assembly is arranged between the lifting plate and the limit block. When the gas meter module is placed in the placement position, the lifting plate sinks to abut against the support seat, and the linkage assembly forces the limit block to move into the placement position and block the top of the gas meter module; the locking assembly is arranged on the support seat to force the lifting plate and the support seat to remain in a state of abutment.

[0011] By adopting the above technical solution, when the gas meter module is placed in the placement position, the lifting plate will sink under the gravity of the gas meter module until it contacts the support seat. At this time, the linkage component forces the limit block to move into the placement position and block the top of the gas meter module, effectively preventing the gas meter module from lateral displacement or even falling off due to vibration or collision during the transfer process, thereby improving the safety and stability of the gas meter module. At the same time, the locking component enables the lifting plate and the support seat to remain in contact with each other, further ensuring that the limit block firmly blocks the gas meter module, thereby improving the working reliability of the entire positioning fixture.

[0012] Optionally, the linkage assembly includes a linkage ring and a linkage column, the linkage ring is slidably sleeved on the outer peripheral wall of the limit column and connected to the lifting plate, and the limit block is rotatably connected to the linkage ring; a guide groove is provided on the outer peripheral wall of the limit column, and the guide groove is spirally extended along the axial direction of the limit column, and the limit block is provided with a through hole for the limit column to pass through, one end of the linkage column is fixed to the inner wall of the through hole, and the other end is inserted into the guide groove and displaced in the guide groove.

[0013] By adopting the above technical solution, when the gas meter module is placed in the placement station, the lifting plate is forced to sink to contact the support seat, and the linkage ring then drops and drives the limit block to move downward along the guide groove of the limit column through the linkage column. Finally, the limit block is transferred to the placement station and blocks the top of the gas meter module, effectively preventing the gas meter module from accidentally falling during the transfer process, and further improving the stability of the gas meter module. At the same time, the rotating connection design between the limit block and the linkage ring enables the limit block to automatically adjust its position (follow the lifting plate to move downward) during the transfer to the placement station, ensuring that the limit block can accurately block the top of the gas meter module, enhancing the reliability and ease of operation of the device.

[0014] Optionally, an installation cavity is defined in the support seat, and the locking assembly includes a lifting rod and a locking strip, wherein one end of the lifting rod is connected to the lifting plate, and the other end passes through the installation cavity, and the lifting plate is slidably installed on the support seat through the lifting rod; the locking strip is slidably installed in the installation cavity, and the locking strip is defined with a penetration groove for the lifting rod to pass through, and one end of the locking strip passes through the installation cavity and extends to the outside of the support seat; the side wall of the lifting rod is defined with a locking groove for the locking strip to be embedded in.

[0015] By adopting the above technical solution, when the gas meter module is placed in the placement position, the lifting plate is forced to sink to abut against the support seat, so that the limit block is transferred to the placement position and blocks the top of the gas meter module. When the lifting plate abuts against the support seat, the locking strip is driven to move a certain distance, so that the locking strip is embedded in the locking groove of the lifting rod, so that the lifting plate remains locked, ensuring that the limit block remains blocked on the top of the gas meter module.

[0016] Optionally, a control strip is slidably installed on the surface of the substrate, and one end of the locking strip passes through the installation cavity and extends to the top of the control strip; a guide column is provided on the top wall of the control strip, and a guide groove for the guide column to be embedded in the bottom wall of the locking strip, and the guide groove has a first point position and a second point position, and when the guide column moves to the first point position, the locking strip is disengaged from the locking groove, and when the guide column moves to the second point position, the locking strip is embedded in the locking groove; a reset spring is provided between the control strip and the substrate, and the reset spring normally forces the guide column of the control strip to move to the first point position.

[0017] By adopting the above technical solution, under normal conditions (when the gas meter module is not placed in the placement position), the guide column of the control bar is displaced to the first point position (i.e., the locking bar is out of the locking groove) under the action of the reset spring, so that the lifting plate can be lifted and displaced, so that when the gas meter module is placed in the placement position, the lifting plate can sink. After the gas meter module is placed in the placement position and the lifting plate sinks to abut against the support seat, the control bar is pushed to make the guide column of the control bar slide in the guide groove, and the guide column of the control bar can push the locking bar through the inner wall of the guide groove, thereby forcing the locking bar to move; when the guide column moves to the second point position, the locking bar is embedded in the locking groove, so that the lifting plate can be locked, that is, the limit block is locked, so that the limit block remains blocked at the top of the gas meter module, improving the operational convenience of the overall structure.

[0018] Optionally, a control seat is provided on the surface of the substrate, and the control seat has a control channel for inserting the control strip; a control component is provided between the control seat and the control strip, and the control component is used to force the guide column of the control strip to remain at the second point position.

[0019] By adopting the above technical solution, during the use of the positioning fixture, the control assembly between the control seat and the control strip can effectively keep the guide column of the control strip always at the second point, so that the locking strip is continuously embedded in the locking groove, ensuring that the lifting plate and the support seat remain in a state of abutment. In this way, when the substrate is transferred or moved into the aging box for aging testing, the limit block is always in a state of limiting the gas meter module, which improves the stability of the aging operation of the gas meter module.

[0020] Optionally, a docking rod is provided on the end face of the control strip close to the control seat, and the control assembly includes a docking block, an anti-slip block, a compression spring and an unlocking member, the docking block is arranged at an end of the docking rod away from the control strip, the anti-slip blocks are provided with two and the two anti-slip blocks are slidably installed in the control seat, and a penetration channel for the docking block to pass through is formed between the two anti-slip blocks; the compression spring is arranged between the anti-slip block and the control seat, and the compression spring normally forces the two anti-slip blocks to approach each other to narrow the penetration channel; each of the anti-slip blocks has a first pushing surface, and when the control strip is displaced and forces the guide column to displace from the first point position to the second point position, the docking block drives the two anti-slip blocks away from each other through the first pushing surface to expand the penetration channel, and when the guide column is displaced to the second point position, the two anti-slip blocks approach each other to limit the docking block; the unlocking member is arranged on the docking rod to drive the two anti-slip blocks away from each other.

[0021] By adopting the above technical solution, during the displacement process of the control bar, the guide column drives the locking bar to move, so that the guide column moves from the first point to the second point. In this process, the docking block drives the two anti-slip blocks away from each other through the first pushing surface, thereby expanding the penetration channel and facilitating the smooth passage of the docking block. When the guide column moves to the second point, the two anti-slip blocks approach each other under the action of the compression spring, limit the docking block, ensure that the locking bar is firmly embedded in the locking groove, and lock the lifting plate. The unlocking member is set on the docking rod, and when it is necessary to release the lock, the two anti-slip blocks can be driven away from each other, thereby releasing the docking block, and the locked state can be released conveniently and quickly.

[0022] Optionally, the limit columns on both sides of the support seat are slidably installed on the surface of the substrate, and the lifting plate is provided with a moving component. When the lifting plate is lifted off the support seat, the moving component forces the two limit columns to move away from each other to expand the placement position; when the lifting plate is against the support seat, the moving component forces the two limit columns to move closer to each other to reduce the placement position.

[0023] By adopting the above technical solution, under normal conditions (when the gas meter module is not placed in the placement station), the lifting plate is lifted off the support seat, and the moving assembly forces the two limiting columns to move away from each other, thereby expanding the placement station and facilitating the placement of the gas meter module. When the gas meter module is placed in the placement station (the lifting plate sinks), the moving assembly forces the two limiting columns to move closer to each other, thereby shrinking the placement station to limit the gas meter module, effectively preventing the gas meter module from lateral deviation and accidental falling during the transfer process.

[0024] Optionally, the moving assembly includes a rotating sleeve, a moving rod, a rack and a gear, the rotating sleeve is rotatably installed in the installation cavity of the support seat; the moving rod is provided with two and is arranged corresponding to the two limit columns, one end of each of the moving rods is connected to the corresponding limit column, and the other end penetrates into the installation cavity and is inserted in the rotating sleeve, the rotating sleeve and the moving rods of the two limit columns are threadedly connected, and the threads between the rotating sleeve and the moving rods of the two limit columns are arranged in opposite directions; the rack is connected to the lifting rod, and the gear is coaxially arranged on the outer peripheral wall of the rotating sleeve and meshes with the rack for transmission.

[0025] By adopting the above technical solution, when the gas meter module is placed in the placement station and drives the lifting plate to sink, the rotating sleeve rotates with the cooperation of the rack and the gear, driving the two limit columns to move closer to each other to reduce the placement station. When the gas meter module is taken out of the placement station, the lifting plate is lifted off the support seat under the action of the support spring, and the rotating sleeve rotates in the opposite direction with the cooperation of the rack and the gear, driving the two limit columns to move away from each other to expand the placement station, so as to facilitate the removal of the gas meter module and the placement of the next gas meter module, thereby improving the operational convenience of the overall structure.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Through the setting of the support base and the limit columns, when the aging operation of the gas meter module is carried out, each gas meter module is placed in each positioning unit respectively; the outer shell of the special-shaped gas meter module usually has an air inlet connector at the large end and an air outlet connector at the small end. When the gas meter module is placed in the placement position of the support base, the junction of the air inlet connector and the air outlet connector can be limited between the two limit columns, thereby limiting the lateral deviation of the gas meter module on the substrate, reducing the risk of accidental falling of the gas meter module, and helping to maintain good product quality of the gas meter module. Moreover, when the gas meter module is placed at the placement station, the gas inlet connector of the gas meter module can be partially located in the area between adjacent positioning units, so that the gas inlet connectors at the large ends of two adjacent gas meter modules are closer; and the gas outlet end of the small end of the gas meter module can extend between the two positioning units of another group of positioning modules, and be staggered with the two adjacent gas meter modules on the opposite side, so that multiple gas meter modules are placed more compactly on the positioning fixture, and the aging operation of most gas meter modules can be completed in batches, thereby improving the overall operation efficiency;

[0028] 2. Through the arrangement of the lifting plate, support spring, linkage assembly and locking assembly, when the gas meter module is placed in the placement position, the lifting plate will sink under the gravity of the gas meter module until it contacts the support seat. At this time, the linkage assembly forces the limit block to move into the placement position and block the top of the gas meter module, effectively preventing the gas meter module from lateral displacement or even falling off due to vibration or collision during the transfer process, thereby improving the safety and stability of the gas meter module. At the same time, the locking assembly enables the lifting plate and the support seat to remain in contact with each other, further ensuring that the limit block firmly blocks the gas meter module, thereby improving the working reliability of the entire positioning fixture;

[0029] 3. Through the setting of the moving assembly, under normal conditions (when the gas meter module is not placed in the placement position), the lifting plate is lifted away from the support seat, and the moving assembly forces the two limit columns to move away from each other, thereby expanding the placement position and facilitating the placement of the gas meter module. When the gas meter module is placed in the placement position (the lifting plate sinks), the moving assembly forces the two limit columns to move closer to each other, thereby shrinking the placement position to limit the gas meter module, effectively preventing the gas meter module from lateral deviation and accidental falling during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a gas meter module;

[0031] Figure 2 is a schematic diagram of the overall structure of Example 1;

[0032] Figure 3 This is a structural schematic diagram of embodiment 1 showing that a gas meter module is placed at a placement station;

[0033] Figure 4 is a schematic diagram of the overall structure of Example 2;

[0034] Figure 5 This is a schematic diagram of the structure of the limit block embodied in Example 2;

[0035] Figure 6 is a partial cross-sectional view of the driving mechanism of embodiment 2;

[0036] Figure 7 is a partial cross-sectional view of the linkage column embodied in Example 2;

[0037] Figure 8 is a partial cross-sectional view of the guide groove of embodiment 2;

[0038] Fig. 9 is a partial cross-sectional view of a control assembly according to Embodiment 2;

[0039] Fig.10 is a partial cross-sectional view of a sliding block according to Embodiment 3;

[0040] Fig.11 yes Fig.10 Enlarged view of point A in the middle.

[0041] Description of the accompanying drawings: 1, substrate; 11, support bar; 111, damping paint layer; 12, sliding groove; 2, positioning module; 3, positioning unit; 31, support seat; 311, installation cavity; 32, limit column; 321, guide groove; 322, sliding block; 33, placement station; 34, limit block; 341, penetration hole; 4, driving mechanism; 41, lifting plate; 411, first connecting frame; 42, supporting spring; 43, linkage ring; 44, linkage column; 45, lifting rod; 451, locking groove; 452, second connecting frame; 46, locking bar; 461, penetration groove; 462, guide groove; 4 63. First point; 464. Second point; 465. Third point; 5. Control strip; 51. Guide column; 52. Return spring; 53. Docking rod; 54. Push head; 6. Control seat; 61. Control channel; 611. Moving groove; 7. Control assembly; 71. Docking block; 72. Anti-slip block; 721. Passageway; 722. First pushing surface; 73. Compression spring; 74. Unlocking block; 741. Second pushing surface; 8. Moving assembly; 81. Rotating sleeve; 82. Moving rod; 83. Rack; 84. Gear; 9. Gas meter module; 91. Inlet connector; 92. Outlet connector. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1 -Attached Fig.11 This application is described in further detail.

[0043] Example 1

[0044] The embodiment of the present application discloses a positioning fixture for aging of ultrasonic gas meter modules.

[0045] Reference Figure 1 The outer shell of the gas meter module 9 is irregularly shaped, including an air inlet connector 91 at a large end and an air outlet connector 92 at a small end. The air inlet connector 91 and the air outlet connector 92 are interconnected and integrally formed, so that the gas meter module 9 is T-shaped as a whole.

[0046] Reference Figure 2 , Figure 3A positioning fixture for ultrasonic gas meter module aging includes a substrate 1, a support bar 11 and a positioning module 2. The number of positioning modules 2 is two groups, and the two groups of positioning modules 2 are symmetrically arranged on the surface of the substrate 1, and the two groups of positioning modules 2 are arranged side by side along the extension direction of the substrate 1. Each positioning module 2 includes a plurality of positioning units 3, and the positioning units 3 are used for positioning and placing the gas meter module 9. The positioning units 3 in the same group of positioning modules 2 are equidistantly arranged along the extension direction of the substrate 1, and the positioning units 3 arranged in the two groups of positioning modules 2 are staggered.

[0047] The positioning unit 3 includes a support seat 31 and a limiting column 32. In this embodiment, the support seat 31 is fixedly mounted on the surface of the substrate 1; there are two limiting columns 32, both of which are fixedly mounted on the surface of the substrate 1, and the two limiting columns 32 are respectively located on two opposite sides of the support seat 31, and a placement station 33 for placing the gas meter module 9 is formed between two adjacent limiting columns 32. It can be understood that the placement stations 33 arranged in the two groups of positioning modules 2 are staggered.

[0048] Reference Figure 2 , Figure 3 The support bar 11 is fixedly installed on the surface of the substrate 1, and the support bar 11 is located between the two groups of positioning modules 2; the two ends of the support bar 11 are extended along the extension direction of the substrate 1, and the surface of the support bar 11 is coated with a paint with a high damping coefficient to form a damping paint layer 111. There are multiple damping paint layers 111, and all damping paint layers 111 are equidistantly arranged along the extension direction of the support bar 11; and the number of damping paint layers 111 is equal to the total number of placement stations 33, and each damping paint layer 111 is respectively arranged along the width direction of the substrate 1 and corresponding to each placement station 33.

[0049] The implementation principle of Example 1 of the present application is as follows: when the gas meter module 9 is placed on the placement station 33, the junction of the air inlet connector 91 and the air outlet connector 92 of the gas meter module 9 can be against the support seat 31, and the junction of the air inlet connector 91 and the air outlet connector 92 of the gas meter module 9 can be limited between the two limiting columns 32, thereby limiting the lateral displacement of the gas meter module 9 along the extension direction of the substrate 1; the air outlet connector 92 of the gas meter module 9 can partially abut against the damping paint layer 111 on the surface of the support bar 11, so that the friction resistance between the gas meter module 9 and the substrate 1 is increased, thereby limiting the displacement of the gas meter module 9 along the width direction of the substrate 1, which can reduce the risk of accidental falling of the gas meter module 9 and enable the gas meter module 9 to maintain good product quality.

[0050] Moreover, after each gas meter module 9 is placed in each corresponding placement station 33, the air inlet connector 91 of the gas meter module 9 can be partially located in the area between adjacent positioning units 3, so that the air inlet connectors 91 of adjacent gas meter modules 9 are closer; and the air outlet end of the small end of the gas meter module 9 can extend to between the two positioning units 3 of another group of positioning modules 2, and be placed alternately with the two adjacent gas meter modules 9 on the opposite side, so that the gas meter module 9 is placed more compactly when placed on the positioning fixture, and the aging operation of most gas meter modules 9 can be completed in batches, thereby improving the overall operation efficiency.

[0051] Example 2

[0052] The embodiment of the present application discloses a positioning fixture for aging of ultrasonic gas meter modules.

[0053] Reference Figure 4 , Figure 5 The difference between the positioning fixture for ultrasonic gas meter module aging disclosed in the embodiment of the present application and embodiment 1 is that:

[0054] In this embodiment, the outer peripheral wall of each limit column 32 is sleeved with a limit block 34, and the limit block 34 is provided with a through hole 341 for the limit column 32 to pass through. Under normal circumstances (when the gas meter module 9 is not placed in the placement station 33), the limit block 34 rotates out of the placement station 33; the support seat 31 is provided with a driving mechanism 4, and when the gas meter module 9 is placed in the placement station 33, the driving mechanism 4 forces the limit block 34 to rotate into the placement station 33 and block the top of the gas meter module 9.

[0055] Reference Figure 5 , Figure 6 The driving mechanism 4 includes a lifting plate 41, a support spring 42, a linkage assembly and a locking assembly. The lifting plate 41 is installed on the top of the support seat 31 and can be lifted and lowered. The top wall of the support seat 31 is provided with an avoidance groove. One end of the support spring 42 is fixedly connected to the bottom wall of the avoidance groove, and the other end is fixedly connected to the lifting plate 41. The support spring 42 normally forces the plate surface of the lifting plate 41 to lift away from the support seat 31.

[0056] Reference Figure 5 , Figure 6The linkage component is arranged between the lifting plate 41 and the limit block 34. When the gas meter module 9 is placed in the placement position 33, the weight of the gas meter module 9 forces the lifting plate 41 to sink to abut against the support seat 31, and the linkage component forces the limit block 34 to move into the placement position 33 and block the top of the gas meter module 9; the linkage component includes a linkage ring 43 and a linkage column 44. The linkage ring 43 is slidably sleeved on the outer peripheral wall of the limit column 32. To avoid interference with the gas meter module 9, the linkage ring 43 is arranged at the top of the limit block 34. A first connecting frame 411 is installed between the outer peripheral wall of the linkage ring 43 and the side wall of the lifting plate 41, and the linkage ring 43 and the lifting plate 41 are connected by the first connecting frame 411.

[0057] Reference Figure 5 , Figure 7 In this embodiment, the limit block 34 is rotatably connected to the linkage ring 43 so that the limit block 34 can rotate around the central axis of the linkage ring 43 (that is, the limit block 34 can rotate around the central axis of the limit column 32); a guide groove 321 is provided on the outer peripheral wall of the limit column 32, and the guide groove 321 is spirally extended along the axial direction of the limit column 32. One end of the linkage column 44 is fixed to the inner wall of the through hole 341, and the other end is inserted into the guide groove 321 and displaced in the guide groove 321. When the lifting plate 41 sinks to abut against the support seat 31, the linkage column 44 of the limit block 34 displaces in the guide groove 321 and forces the limit block 34 to move into the placement station 33.

[0058] Reference Figure 6 , Figure 8 , a mounting cavity 311 is provided in the support seat 31, and a locking assembly is provided in the support seat 31 to force the lifting plate 41 and the support seat 31 to maintain abutment with each other; in this embodiment, the locking assembly includes a lifting rod 45 and a locking strip 46, the lifting rod 45 is vertically provided, one end of the lifting rod 45 is fixedly connected to the bottom wall of the lifting plate 41, and the other end penetrates into the mounting cavity 311, and the lifting plate 41 is slidably installed on the support seat 31 through the lifting rod 45. The locking strip 46 is slidably installed in the mounting cavity 311, and a penetration groove 461 is provided in the locking strip 46 for the lifting rod 45 to pass through, one end of the locking strip 46 passes through the mounting cavity 311 and extends to the outside of the support seat 31, and a locking groove 451 is provided on the side wall of the lifting rod 45 for the locking strip 46 to be embedded.

[0059] Reference Figure 4 , Figure 5 , Figure 8A control strip 5 is slidably installed on the surface of the substrate 1. Two control strips 5 are provided. The two control strips 5 are corresponding to the two groups of positioning modules 2. Both ends of each control strip 5 are extended along the extension direction of the substrate 1. The sliding direction of the control strip 5 is consistent with the extension direction of the substrate 1. A pushing head 54 is fixedly installed at one end of the control strip 5; in this embodiment, one end of the locking strip 46 in each support seat 31 in the positioning module 2 passes through the installation cavity 311 and extends to the top of the corresponding control strip 5; a guide column 51 is fixedly installed on the top wall of the control strip 5, and the number of the guide columns 51 is set corresponding to the number of the support seats 31 in the positioning module 2. The bottom wall of each locking strip 46 is provided with a guide groove 462 that penetrates the locking strip 46, and the guide groove 462 is used for the corresponding guide column 51 to be embedded.

[0060] The guide groove 462 has a first point position 463 and a second point position 464. When the guide column 51 moves to the first point position 463, the locking strip 46 disengages from the locking groove 451. When the guide column 51 moves to the second point position 464, the locking strip 46 embeds into the locking groove 451. A return spring 52 is installed between the control strip 5 and the base plate 1. One end of the return spring 52 is fixedly installed on the base plate 1, and the other end is fixedly installed on the push head 54 of the control strip 5. The return spring 52 normally forces the guide column 51 of the control strip 5 to move to the first point position 463.

[0061] Reference Figure 5 , Fig. 9 A control seat 6 is fixedly installed on the surface of the substrate 1. The control seat 6 is located on the side of the control strip 5 away from the pushing head 54. The control seat 6 is provided with a control channel 61 for inserting the control strip 5. A control component 7 is installed between the control seat 6 and the control strip 5. The control component 7 is used to force the guide column 51 of the control strip 5 to remain at the second point 464.

[0062] A docking rod 53 is fixedly installed on the end surface of the control strip 5 close to the control seat 6. The control assembly 7 includes a docking block 71, an anti-slip block 72, a compression spring 73 and an unlocking piece. The docking block 71 is fixedly installed on the end of the docking rod 53 away from the control strip 5. Both opposite side walls of the control channel 61 are provided with movable grooves 611. Two anti-slip blocks 72 are provided and correspond to the two movable grooves 611. Each anti-slip block 72 is slidably installed in the corresponding movable groove 611, and a penetration channel 721 for the docking block 71 to pass through is formed between the two anti-slip blocks 72.

[0063] The number of compression springs 73 is set corresponding to the number of anti-slip blocks 72. One end of the compression spring 73 is fixedly connected to the inner wall of the movable groove 611, and the other end is fixedly connected to the corresponding anti-slip block 72. The compression spring 73 normally forces the two anti-slip blocks 72 to approach each other to reduce the penetration channel 721; each anti-slip block 72 has a first pushing surface 722. When the control bar 5 moves toward the control seat 6 to force the guide column 51 to move from the first point position 463 to the second point position 464, the docking block 71 drives the two anti-slip blocks 72 away from each other through the first pushing surface 722 to expand the penetration channel 721, and when the guide column 51 moves to the second point position 464, the two anti-slip blocks 72 approach each other to limit the docking block 71.

[0064] Reference Fig. 9 , an unlocking member is provided on the docking rod 53 to drive the two anti-slip blocks 72 away from each other; in the present embodiment, the unlocking member is provided as an unlocking block 74, and the unlocking block 74 is slidably sleeved on the outer peripheral wall of the docking rod 53, and when the guide column 51 of the control strip 5 is displaced to the second point position 464, the two anti-slip blocks 72 are located between the docking block 71 and the unlocking block 74; the guide groove 462 has a third point position 465, and the third point position 465 is located on the side of the second point position 464 close to the control seat 6, when the control strip 5 is displaced toward the control seat 6 to force the guide column 51 to displace from the second point position 464 to the third point position 465, the unlocking block 74 drives the two anti-slip blocks 72 away from each other through the first pushing surface 722 to expand the penetration channel 721, and when the guide column 51 is displaced to the third point position 465, the unlocking block 74 is displaced to the side of the anti-slip block 72 close to the control seat 6.

[0065] The unlocking block 74 has a second pushing surface 741. When the guide column 51 moves from the third point 465 toward the second point 464 (i.e., forces the control strip 5 to move away from the control seat 6), the unlocking block 74 drives the two anti-slip blocks 72 away from each other through the second pushing surface 741, so that the unlocking block 74 and the docking block 71 can be separated from the anti-slip block 72.

[0066] The implementation principle of the second embodiment of the present application is as follows: under normal conditions (when the gas meter module 9 is not placed in the placement position 33), the lifting plate 41 is lifted off the support seat 31 by the support spring 42, and the limiting block 34 on the outer peripheral side of the limiting column 32 is rotated out of the placement position 33 to facilitate the placement of the gas meter module 9. When the gas meter module 9 is placed in the placement position 33, the gravity of the gas meter module 9 presses the lifting plate 41 and forces the lifting plate 41 to abut against the top wall of the support seat 31. At this time, the lifting rod 45 descends, so that the locking groove 451 is directly opposite to the locking strip 46; at the same time, the limiting block 34 is rotated into the placement position 33 with the cooperation of the linkage ring 43 and the linkage column 44 and blocks the top of the gas meter module 9.

[0067] After each gas meter module 9 is placed on the support seat 31 of each positioning unit 3 respectively, the control strip 5 is pushed to drive all the guide columns 51 to move synchronously. Under the action of the guide groove 462, the locking strip 46 in each support seat 31 can be moved to embed into the locking groove 451 of the corresponding lifting rod 45, so as to limit the lifting plate 41, and then the limit block 34 keeps blocking the top of the gas meter module 9, reducing the accidental falling of the gas meter module 9 due to shaking during the transfer of the substrate 1, and effectively improving the safety of the substrate 1 during the transfer process.

[0068] When the aging test unlocking needs to remove the gas meter module 9, continue to push the control strip 5 to move the guide column 51 to the third point 465, at which time the unlocking block 74 moves to the side of the anti-dropping block 72 close to the control seat 6; then release the control strip 5, and the control strip 5 moves toward the side away from the control seat 6 under the action of the reset spring 52, so that the guide column 51 moves to the first point 463 again, and the locking strip 46 is disengaged from the locking groove 451, and the gas meter module 9 can be taken out. When the gas meter module 9 is taken out, the lifting plate 41 is lifted, driving the limit block 34 to automatically rotate out of the placement station 33, so that the gas meter module 9 can be taken out and the next gas meter module 9 can be placed, which greatly improves the convenience of operation of the overall structure.

[0069] Example 3

[0070] The embodiment of the present application discloses a positioning fixture for aging of ultrasonic gas meter modules.

[0071] Reference Fig.10 , Fig.11 The difference between the positioning fixture for ultrasonic gas meter module aging disclosed in the embodiment of the present application and embodiment 2 is that:

[0072] In this embodiment, the lower ends of the two limit columns 32 on both sides of the support seat 31 are fixedly installed with sliding blocks 322, and the surface of the substrate 1 is provided with a sliding groove 12 for the sliding block 322 to slide, and the limit columns 32 are slidably installed on the substrate 1 through the sliding block 322; the lifting plate 41 is provided with a moving component 8, when the lifting plate 41 is lifted off the support seat 31, the moving component 8 forces the two limit columns 32 to move away from each other to expand the placement station 33, and when the lifting plate 41 is against the support seat 31, the moving component 8 forces the two limit columns 32 to move closer to each other to shrink the placement station 33.

[0073] Reference Fig.10 , Fig.11The moving assembly 8 includes a rotating sleeve 81, a moving rod 82, a rack 83 and a gear 84. The rotating sleeve 81 is rotatably installed in the installation cavity 311 of the support seat 31, and the rotating sleeve 81 and the lifting rod 45 are staggered along the width direction of the substrate 1; two moving rods 82 are provided and are arranged corresponding to the two limiting columns 32, one end of each moving rod 82 is fixedly connected to the corresponding limiting column 32, and the other end penetrates into the installation cavity 311 and is inserted into the rotating sleeve 81; the rotating sleeve 81 and the moving rods 82 of the two limiting columns 32 are threadedly connected (the threads are not shown in the figure), and the threads between the rotating sleeve 81 and the moving rods 82 of the two limiting columns 32 are arranged in opposite directions.

[0074] Both ends of the rack 83 are extended in the height direction, and a second connecting frame 452 is installed between the rack 83 and the lifting rod 45. The rack 83 and the lifting rod 45 are connected by the second connecting frame 452. The gear 84 is coaxially fixed to the outer peripheral wall of the rotating sleeve 81 and meshes with the rack 83 for transmission. It should be noted that in order to avoid the locking strip 46, in this embodiment, two groups of racks 83 and gears 84 are provided, and the two groups of gears 84 and racks 83 are symmetrically distributed on both sides of the locking strip 46.

[0075] It should be noted that, in the present embodiment, since the limiting column 32 is slidably installed on the base plate 1, in order to adapt to the sliding of the limiting column 32, a sliding connection is required between the first connecting frame 411 and the lifting plate 41, and the sliding direction of the first connecting frame 41 relative to the lifting plate 41 is consistent with the sliding direction of the limiting column 32 (the sliding connection between the first connecting frame 411 and the lifting plate 41 is not reflected in the figure); in a specific implementation manner, a sliding groove for inserting the first connecting frame 411 can be provided on the side wall of the lifting plate 41, so as to realize the sliding connection between the first connecting frame 411 and the lifting plate 41.

[0076] The implementation principle of Example 3 of the present application is as follows: when the gas meter module 9 is placed in the placement position 33 (the lifting plate 41 sinks), the rotating sleeve 81 rotates with the cooperation of the rack 83 and the gear 84, driving the two limiting columns 32 to move closer to each other to reduce the placement position 33, thereby limiting the gas meter module 9 and reducing the possibility of accidental falling of the gas meter module 9; when the gas meter module 9 is taken out of the placement position 33 after the test, the lifting plate 41 is lifted off the support seat 31 under the action of the support spring 42, and the rotating sleeve 81 rotates in the opposite direction with the cooperation of the rack 83 and the gear 84, driving the two limiting columns 32 to move away from each other to expand the placement position 33, so as to facilitate the removal of the gas meter module 9 and the placement of the next gas meter module 9, thereby improving the operational convenience of the overall structure.

[0077] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A positioning fixture for ultrasonic gas meter module aging, characterized in that: The invention comprises a substrate (1) and two groups of positioning modules (2) arranged on the surface of the substrate (1), wherein the two groups of positioning modules (2) are arranged side by side along the extension direction of the substrate (1); each of the positioning modules (2) comprises a plurality of positioning units (3) which are arranged alternately between the positioning units (3) of the two groups of positioning modules (2); wherein the positioning units (3) comprise a support seat (31) fixed on the surface of the substrate (1) and two positioning units (31) respectively arranged on both sides of the support seat (31). A limiting column (32) is provided, and a placement position (33) for placing a gas meter module (9) is formed between two of the limiting columns (32); a limiting block (34) is sleeved on the outer peripheral wall of each of the limiting columns (32); the support seat (31) is provided with a driving mechanism (4); when the gas meter module (9) is placed in the placement position (33), the driving mechanism (4) forces the limiting block (34) to move into the placement position (33) and block the top of the gas meter module (9).

2. A positioning fixture for ultrasonic gas meter module aging according to claim 1, characterized in that: The driving mechanism (4) comprises a lifting plate (41), a supporting spring (42), a linkage assembly and a locking assembly. The lifting plate (41) is slidably mounted on the top of the supporting seat (31). The supporting spring (42) is arranged between the lifting plate (41) and the supporting seat (31). The supporting spring (42) normally forces the lifting plate (41) to lift away from the supporting seat (31). The linkage assembly is arranged between the lifting plate (41) and the limiting block (34). When the gas meter module (9) is placed in the placement position (33), the lifting plate (41) sinks to abut against the supporting seat (31), and the linkage assembly forces the limiting block (34) to move into the placement position (33) and block the top of the gas meter module (9). The locking assembly is arranged on the supporting seat (31) to force the lifting plate (41) and the supporting seat (31) to maintain abutment against each other.

3. A positioning fixture for ultrasonic gas meter module aging according to claim 2, characterized in that: The linkage assembly comprises a linkage ring (43) and a linkage column (44); the linkage ring (43) is slidably sleeved on the outer peripheral wall of the limiting column (32) and connected to the lifting plate (41); the limiting block (34) and the linkage ring (43) are rotatably connected; the outer peripheral wall of the limiting column (32) is provided with a guide groove (321); the guide groove (321) is spirally extended along the axial direction of the limiting column (32); the limiting block (34) is provided with a through hole (341) for the limiting column (32) to pass through; one end of the linkage column (44) is fixed to the inner wall of the through hole (341); the other end is inserted into the guide groove (321) and displaced in the guide groove (321).

4. A positioning fixture for ultrasonic gas meter module aging according to claim 2, characterized in that: The support seat (31) is provided with an installation cavity (311), and the locking assembly includes a lifting rod (45) and a locking strip (46). One end of the lifting rod (45) is connected to the lifting plate (41), and the other end passes through the installation cavity (311). The lifting plate (41) is slidably installed on the support seat (31) through the lifting rod (45); the locking strip (46) is slidably installed in the installation cavity (311), and the locking strip (46) is provided with a penetration groove (461) for the lifting rod (45) to pass through. One end of the locking strip (46) passes through the installation cavity (311) and extends to the outside of the support seat (31); the side wall of the lifting rod (45) is provided with a locking groove (451) for the locking strip (46) to be embedded.

5. A positioning fixture for ultrasonic gas meter module aging according to claim 4, characterized in that: A control strip (5) is slidably mounted on the surface of the substrate (1), one end of the locking strip (46) passes through the mounting cavity (311) and extends to the top of the control strip (5); a guide column (51) is arranged on the top wall of the control strip (5), and a guide groove (462) is provided on the bottom wall of the locking strip (46) for the guide column (51) to be embedded, the guide groove (462) having a first point position (463) and a second point position (464); when the guide column (51) moves to the first point position (463), the locking strip (46) is disengaged from the locking groove (451); when the guide column (51) moves to the second point position (464), the locking strip (46) is embedded in the locking groove (451); a return spring (52) is arranged between the control strip (5) and the substrate (1), and the return spring (52) normally forces the guide column (51) of the control strip (5) to move to the first point position (463).

6. A positioning fixture for ultrasonic gas meter module aging according to claim 5, characterized in that: A control seat (6) is provided on the surface of the substrate (1), and the control seat (6) is provided with a control channel (61) for inserting the control strip (5); a control component (7) is provided between the control seat (6) and the control strip (5), and the control component (7) is used to force the guide column (51) of the control strip (5) to remain at the second point position (464).

7. A positioning fixture for ultrasonic gas meter module aging according to claim 6, characterized in that: The end surface of the control strip (5) close to the control seat (6) is provided with a docking rod (53); the control assembly (7) comprises a docking block (71), an anti-slipping block (72), a compression spring (73) and an unlocking member; the docking block (71) is arranged at one end of the docking rod (53) away from the control strip (5); two anti-slipping blocks (72) are provided and both anti-slipping blocks (72) are slidably installed in the control seat (6); a through passage (721) for the docking block (71) to pass through is formed between the two anti-slipping blocks (72); the compression spring (73) is arranged between the anti-slipping block (72) and the control seat (6); the compression spring (73) normally forces the two anti-slipping blocks (72) to move. 2) approach each other to reduce the penetration channel (721); each of the anti-slip blocks (72) has a first pushing surface (722), when the control strip (5) is displaced and forces the guide column (51) to move from the first point position (463) to the second point position (464), the docking block (71) drives the two anti-slip blocks (72) to move away from each other through the first pushing surface (722) to expand the penetration channel (721), and when the guide column (51) is displaced to the second point position (464), the two anti-slip blocks (72) approach each other to limit the docking block (71); the unlocking member is arranged on the docking rod (53) to drive the two anti-slip blocks (72) to move away from each other.

8. A positioning fixture for ultrasonic gas meter module aging according to claim 4, characterized in that: The limiting columns (32) on both sides of the support seat (31) are slidably installed on the surface of the base plate (1); the lifting plate (41) is provided with a moving component (8); when the lifting plate (41) is lifted off the support seat (31), the moving component (8) forces the two limiting columns (32) to move away from each other to expand the placement position (33); when the lifting plate (41) and the support seat (31) are in contact, the moving component (8) forces the two limiting columns (32) to move closer to each other to reduce the placement position (33).

9. A positioning fixture for ultrasonic gas meter module aging according to claim 8, characterized in that: The moving assembly (8) comprises a rotating sleeve (81), a moving rod (82), a rack (83) and a gear (84); the rotating sleeve (81) is rotatably mounted in the mounting cavity (311) of the support seat (31); two moving rods (82) are provided and are arranged corresponding to the two limiting columns (32); one end of each moving rod (82) is connected to the corresponding limiting column (32), and the other end penetrates into the mounting cavity (311) and is inserted into the rotating sleeve (81); the rotating sleeve (81) and the moving rods (82) of the two limiting columns (32) are threadedly connected, and the threads between the rotating sleeve (81) and the moving rods (82) of the two limiting columns (32) are arranged in opposite directions; the rack (83) is connected to the lifting rod (45), and the gear (84) is coaxially arranged on the outer peripheral wall of the rotating sleeve (81) and meshes with the rack (83) for transmission.

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