A water meter movement insertion device with vision correction

Abstract

The application discloses a water meter core insertion device with visual correction function, a pneumatic gripper adopts multi-finger, the inner side of the finger and the contact surface of the core adopt arc-shaped profiling design, the finger clamping pressure is adjustable, and the deformation of the core or the falling of the core caused by improper clamping force in the grabbing process is avoided. The shell clamp device adopts right positioning cylinder, clamping cylinder, centering cylinder, left positioning cylinder, or front and rear positioning block clamping positioning, and adopts centering shaft correction clamping mode, which further improves the positioning accuracy of the shell, and ensures that the core is smoothly inserted in place. The visual camera takes pictures to calculate and correct the angle operation process, which is to calculate the correct rotation correction angle, and the finger clamping position avoids the protruding positioning surface on the core. Each functional device adopts compact modular design, which not only realizes single machine application and multi-station production line online use, but also realizes compact layout, reduces equipment motion beats, reduces equipment system cumulative error and the like.

Description

Technical Field

[0001] This invention relates to the field of water meter assembly technology, and in particular to a water meter movement insertion device with visual correction function. Background Technology

[0002] A water meter is a common tool for measuring water flow, primarily used for measuring the cumulative flow of water. A typical water meter generally consists of an external base meter, filter screen, impeller box, impeller, impeller cover, numeral box, O-ring seal, transparent glass, meter cover seal, plastic meter cover, and a top cover. The filter screen, impeller box, impeller, impeller cover, and numeral box constitute the water meter's mechanism. During operation, water flows from the inlet of the base meter, passes through the internal filter screen, and enters the impeller box, impacting the impeller and generating a rotational torque. When this torque overcomes the impeller's rotational resistance torque, the impeller begins to rotate. When the flow rate is constant, the driving torque and resistance torque balance, and the impeller maintains a uniform rotation speed. The instantaneous and cumulative flow rates of the water in the pipe are determined by the rotational speed of the impeller within the water flow. As the core component of a water meter, the water meter movement plays a crucial role in the accuracy of water meter measurement due to the direction of water flow and the resistance of impeller rotation. To ensure excellent water meter accuracy, water meter manufacturers have clear directional requirements for the assembly of various components of the water meter movement, and the assembly process is quite strict. Given the complexity of the assembly process, the assembly of water meters relies heavily on manual labor, resulting in low efficiency and inconsistent assembly quality due to the reliance on human control. To achieve full automation of the overall assembly process, the water meter movement, as an important functional component for measuring the cumulative flow of the water meter base, has special assembly structures and process requirements for its fit with the water meter housing. For example, it has protrusion and groove positioning structures for confirming spatial position and angular relationships, with a fitting gap of 0.1mm. Therefore, for the entire assembly process and procedures to be precisely and orderly coordinated, and to achieve rapid and continuous automated assembly, the water meter movement must achieve precise angular and coordinate positioning accuracy when inserted into the water meter housing.

[0003] Chinese invention patent CN118046216B discloses an automated water meter assembly device. However, this patent only achieves the simple function of correcting and fitting the protrusions and grooves of the water meter housing and the water meter movement. It fails to effectively address issues such as deformation of the plastic movement during clamping affecting the insertion process, finger clamping, and the need to avoid protrusions in the movement. Furthermore, the loose layout of the various mechanisms fails to effectively resolve the issue of cumulative errors after assembly, and the combined action of multiple mechanisms increases cycle time. Summary of the Invention

[0004] The purpose of this application is to provide a water meter movement insertion device with visual correction function, so as to solve the problems of increased joint action rhythm caused by loose layout of various mechanisms in the assembly device, cumulative error after multi-mechanism cooperation, and interference between the gripper fingers and the movement protrusion.

[0005] To solve the above-mentioned technical problems, this application provides a water meter movement insertion device with visual correction function, comprising:

[0006] The frame, housing clamping device, transfer mechanism X-axis device, Z-axis device, gripper device, and buffer platform;

[0007] The transfer mechanism X-axis device includes multiple columns fixed to the mounting platforms at both ends of the frame. An X-axis module is mounted on the upper end of each column. An X-axis drag chain is mounted on one side of the X-axis module. An XZ-axis connecting plate is mounted on the slide of the X-axis module.

[0008] The Z-axis device is vertically mounted on one end of the XZ-axis connecting plate, the gripper device is mounted on the lower end face of the Z-axis device, and the housing clamping device and the buffer platform are mounted on the frame and located directly below the X-axis module.

[0009] The X-axis motion path of the three-axis truss manipulator, consisting of the housing clamping device, the Z-axis device, and the gripper device, coincides with the center of the movement where the buffer platform is placed.

[0010] In a preferred embodiment, a water meter core insertion device with visual correction function is provided. The gripper device includes a gripper mounting plate fixed to the lower end face of the Z-axis device. A pressure sensor, a drag chain bracket, and a three-way connector for connecting to the system air source are fixed on one side of the gripper mounting plate. A rotating shaft module is mounted on the upper part and a smart camera is mounted on the lower part of the other side of the gripper mounting plate. A slip ring mounting seat, a slip ring, and a gripper mounting seat are sequentially arranged on the lower end face of the rotating platform of the rotating shaft module. The slip ring is fixedly connected to one side of the gripper mounting plate through a slip ring fixing bracket. A rotating shaft passing through the slip ring is fixed on the lower end face of the rotating platform of the rotating shaft module. The output end center through hole of the gripper mounting seat and the output end threaded hole of the rotating shaft are fixedly connected by bolts and fixed in an angular relationship. A pneumatic gripper is fixedly connected to the lower end of the gripper mounting seat, and multiple fingers are installed on the lower end of the pneumatic gripper.

[0011] The solution requires detailed explanation of a water meter movement insertion device with visual correction function, wherein the inner clamping surface of each finger is arranged in an arc shape, so that the clamping surface and the outer circular surface of the movement are closely fitted.

[0012] In a preferred embodiment, a water meter movement insertion device with visual correction function includes a housing clamping device comprising a base plate fixed to the mounting platform of the frame. A pair of detection units are installed diagonally on the base plate. A right positioning cylinder and a left positioning cylinder with a diameter larger than the right positioning cylinder are respectively fixed on both sides of the base plate. Clamping blocks are installed on the rod ends of the right and left positioning cylinders. A support plate located between the right positioning cylinder, the left positioning cylinder, and the detection units is fixed to the upper surface of the base plate. A valve is installed at the uppermost end of the support plate. The system includes an island and a clamping cylinder, on which two clamping fingers are mounted. A front positioning block and a rear positioning block are fixed on the base plate between the right positioning cylinder and the left positioning cylinder. A centering cylinder is mounted on one side of the rear positioning block. Bushings are fixed inside both the front and rear positioning blocks. A centering shaft with clearance fit to the bushing is threaded onto the guide rod of the centering cylinder. A spring that fits with the bushing is fitted on the centering shaft. The housing is placed on the support plate and located between the right positioning cylinder and the left positioning cylinder, corresponding to the clamping fingers.

[0013] As a preferred embodiment, a water meter movement insertion device with visual correction function is provided, wherein the inner arc surface of the clamping finger is engaged with the outer upper external thread of the housing.

[0014] As a preferred embodiment, a water meter movement insertion device with visual correction function is provided, wherein the lower end of the pneumatic gripper is equipped with three fingers.

[0015] In a preferred embodiment, a water meter movement insertion device with visual correction function is provided, wherein the small end thread of the mandrel is threaded to the guide rod thread of the mandrel cylinder.

[0016] The solution requires detailed explanation of a water meter movement insertion device with visual correction function, wherein the output end center through hole of the gripper mounting base and the output end threaded hole of the rotating shaft are fixedly connected by bolts.

[0017] Compared with the prior art, the water meter movement insertion device with visual correction function provided by the present invention has at least the following beneficial effects:

[0018] (1) The pneumatic gripper uses multi-claw fingers. The inner side of the fingers and the contact surface with the mechanism adopts an arc-shaped contour design. The gripping pressure of the fingers can be adjusted to avoid deformation of the mechanism due to excessive gripping force, or dislodging of the mechanism due to insufficient gripping force, or changes in the gripping position during the gripping process. The insertion depth is maximized.

[0019] (2) The housing clamping device uses a right positioning cylinder, a clamping cylinder, a centering cylinder, a left positioning cylinder, or a front positioning block and a rear positioning block for clamping and positioning, and adopts a centering shaft for correction and clamping, which further improves the repeatability of the housing and ensures that the movement is smoothly inserted into place.

[0020] (3) The process of calculating and correcting the angle of the visual camera is as follows: first, to calculate the correct rotation correction angle; second, to avoid the raised positioning surface on the movement when the fingers are held in position.

[0021] (4) Each functional device adopts a compact modular design, which not only enables single-machine application and multi-station production line online use, but also achieves compact layout, reduces equipment operation cycle time, and reduces cumulative error of equipment system. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 An isometric side view of a water meter movement insertion device with visual correction function provided in an embodiment of this application;

[0024] Figure 2 This is a front view of a water meter movement insertion device with visual correction function provided in an embodiment of this application;

[0025] Figure 3 A side view of a water meter movement insertion device with visual correction function provided in an embodiment of this application;

[0026] Figure 4 This is a top view of a water meter movement insertion device with visual correction function provided in an embodiment of this application;

[0027] Figure 5 This is an isometric side view of a gripper device provided in an embodiment of this application;

[0028] Figure 6 A cross-sectional view (AA) of a gripper device provided in an embodiment of this application;

[0029] Figure 7 A method provided in the embodiments of this application Figure 1 Enlarged view of a portion of point I in the middle;

[0030] Figure 8 This is a front view of the gripper device provided in an embodiment of this application;

[0031] Figure 9This is a BB cross-sectional view provided for an embodiment of this application;

[0032] Figure 10 Provided for the embodiments of this application Figure 7 Sectional view;

[0033] In the diagram: 1. Frame; 2. Housing clamping device; 3. Transfer mechanism X-axis device; 4. Z-axis device; 5. Gripper device; 6. Buffer platform; 2-1. Right positioning cylinder; 2-2. Clamping cylinder; 2-3. Clamping finger; 2-4. Valve island; 2-5. Support plate; 2-6. Left positioning cylinder; 2-7. Front positioning block; 2-8. Housing; 2-9. Detection unit; 2-10. Base plate; 2-11. Rear positioning block; 2-12. Alignment cylinder; 2-13. Spring; 2-14. Alignment shaft; 2-15. Clamping block; 2-16. Bushing; 3-1. Column; 3-2. Pressure reducing valve; 3-3. X-axis cable chain; 3-4. XZ-axis connecting plate; 3-5. X-axis module; 4-1 4-1 Z-axis mounting plate; 4-2 Z-axis module; 4-3 Z-axis cable chain; 4-4 Z-axis valve island; 5-1 Gripper mounting plate; 5-2 Rotary shaft module; 5-3 Pressure sensor; 5-4 Cable chain bracket; 5-5 T-connector; 5-6 Slip ring mounting seat; 5-7 Slip ring fixing bracket; 5-8 Slip ring; 5-9 Gripper mounting seat; 5-10 Pneumatic gripper; 5-11 Fingers; 5-12 Smart camera; 5-13 Rotary shaft; 5-14 Mechanism protrusion. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0035] The core of this application is to provide a water meter movement insertion device with visual correction function, which solves the problems of increased joint action rhythm caused by loose layout of various mechanisms in the assembly device, cumulative error after multi-mechanism cooperation, and interference between the gripper fingers and the movement protrusion.

[0036] Figure 1 An isometric side view of a water meter movement insertion device with visual correction function provided in an embodiment of this application; Figure 2 This is a front view of a water meter movement insertion device with visual correction function provided in an embodiment of this application; Figure 3 A side view of a water meter movement insertion device with visual correction function provided in an embodiment of this application; Figure 4 This is a top view of a water meter movement insertion device with visual correction function provided in an embodiment of this application; Figure 5 This is an isometric side view of a gripper device provided in an embodiment of this application; Figure 6A cross-sectional view (AA) of a gripper device provided in an embodiment of this application; Figure 7 A method provided in the embodiments of this application Figure 1 Enlarged view of a portion of point I in the middle; Figure 8 This is a front view of the gripper device provided in an embodiment of this application; Figure 9 This is a BB cross-sectional view provided for an embodiment of this application; Figure 10 Provided for the embodiments of this application Figure 7 Sectional view; see Figures 1 to 10 As shown.

[0037] Example 1

[0038] A water meter movement insertion device with visual correction function includes a frame 1, a housing clamping device 2, a transfer mechanism X-axis device 3, a Z-axis device 4, a gripper device 5, and a buffer platform 6; Figure 1 As shown, the frame 1 has multiple mounting platforms. The transfer mechanism X-axis device 3 includes multiple columns 3-1 fixed on the mounting platforms at both ends of the frame 1. An X-axis module 3-5 is installed on the upper end of each column 3-1. An X-axis drag chain 3-3 is installed on one side of the X-axis module 3-5. An XZ axis connecting plate 3-4 is installed on the slide of the X-axis module 3-5.

[0039] Z-axis device 4 is vertically mounted on one end of XZ-axis connecting plate 3-4, perpendicular to the X-axis direction. Gripper device 5 is mounted on the lower end face of Z-axis device 4. Housing clamp device 2 and buffer platform 6 are mounted on frame 1 and located directly below X-axis module 3-5.

[0040] The X-axis motion path of the three-axis truss manipulator, consisting of the housing clamping device 2, the Z-axis device 4, and the gripper device 5, coincides with the center of the mechanism where the buffer platform 6 is placed.

[0041] Based on Embodiment 1, a water meter core insertion device with visual correction function is provided. The gripper device 5 includes a gripper mounting plate 5-1 fixed to the lower end face of the Z-axis device 4. A pressure sensor 5-3, a drag chain bracket 5-4, and a three-way connector 5-5 for connecting to the system air source are fixed on one side of the gripper mounting plate 5-1. The system air source connected to the three-way connector 5-5 is simultaneously diverted to the connectors on the input ends of the pressure sensor 5-3 and the slip ring 5-8, which can realize real-time detection of air source pressure and determine that the pneumatic gripper 5-10 is working at the design pressure value. On the other side of the gripper mounting plate 5-1, a rotating shaft module 5-2 is mounted on the upper part and a smart camera 5-12 is mounted on the lower part. The rotating platform of the rotating shaft module 5-2 is provided with a slip ring mounting seat 5-6, a slip ring 5-8 and a gripper mounting seat 5-9 in sequence. The slip ring 5-8 is fixedly connected to one side of the gripper mounting plate 5-1 through a slip ring fixing bracket 5-7. A rotating shaft 5-13 that passes through the slip ring 5-8 is fixed on the lower end of the rotating platform of the rotating shaft module 5-2. The output end center through hole of the gripper mounting seat 5-9 and the output end threaded hole of the rotating shaft 5-13 are fixedly connected by bolts and the angular relationship is fixed. A pneumatic gripper 5-10 is fixedly connected to the lower end of the gripper mounting seat 5-9. Multiple fingers 5-11 are installed on the lower end of the pneumatic gripper 5-10. This embodiment enables the rotary motion output of the rotating shaft module 5-2 to be synchronously transmitted through the rotating shaft 5-13 and the gripper mounting base 5-9, thus rotating the gripper 5-10 and maintaining a consistent rotation angle. Simultaneously, the pneumatic connector and input wiring harness mounted on the outer circumference of the slip ring 5-8 are fixed and do not rotate, solving the problem of air pipes and wiring harnesses becoming tangled and knotted during the overall rotation of the gripper device 5. Figure 9 As shown, the inner clamping surfaces of each finger 5-11 are arranged in an arc shape, so that the clamping surface and the outer circular surface of the movement are closely fitted. Multiple fingers 5-11 are mounted on the jaws 5-10. The inner clamping surfaces of the fingers 5-11 adopt an arc contour design, which can make the clamping surface and the outer circular surface of the movement closely fit.

[0042] Based on Embodiment 1, a water meter core insertion device with visual correction function is provided. The housing clamping device 2 includes a base plate 2-10 fixed to the mounting platform of the frame 1. A pair of detection units 2-9 are installed diagonally on the base plate 2-10. A right positioning cylinder 2-1 and a left positioning cylinder 2-6 with a larger cylinder diameter than the right positioning cylinder 2-1 are respectively fixed on both sides of the base plate 2-10. The right positioning cylinder 2-1 and the left positioning cylinder 2-6 have the same stroke. Clamping blocks 2-15 are installed on the rod end faces of the right positioning cylinder 2-1 and the left positioning cylinder 2-6. A support plate 2-5 located between the right positioning cylinder 2-1, the left positioning cylinder 2-6 and the detection units 2-9 is fixed on the upper end face of the base plate 2-10. A valve island 2-4 and a clamping cylinder 2-2 are installed at the uppermost end of the support plate 2-5. Two clamping fingers 2-3 are installed on the clamping cylinder 2-2. A front positioning block 2-7 and a rear positioning block 2-11 are fixed on the base plate 2-10, located between the right positioning cylinder 2-1 and the left positioning cylinder 2-6. After installation, the front positioning block 2-7 and the rear positioning block 2-11 are installed in a straight line between the right positioning cylinder 2-1 and the left positioning cylinder 2-6. A centering cylinder 2-12 is installed on one side of the rear positioning block 2-11. A bushing 2-16 is fixed inside both the front positioning block 2-7 and the rear positioning block 2-11. A centering shaft 2-14 with clearance fit to the bushing 2-16 is threaded onto the guide rod of the centering cylinder 2-12. A spring 2-13 with engagement with the bushing 2-16 is fitted on the centering shaft 2-14. The small end of the centering shaft 2-14 is threaded to the guide rod of the centering cylinder 2-12. The centering cylinder 2-12 is only installed on the rear positioning block 2-11 side and is the active side, while the front positioning block 2-7 is the driven side. The housing 2-8 is placed on the tray 2-5 and is located between the right positioning cylinder 2-1 and the left positioning cylinder 2-6, corresponding to the clamping finger 2-3.

[0043] In this embodiment, a water meter movement insertion device with visual correction function clamps the inner arc surface of the fingers 2-3 and the outer upper external thread of the housing 2-8.

[0044] like Figure 8 , Figure 9 As shown, when the gripper grasps the mechanism, the smart camera 5-12 takes a picture and projects the protruding part of the mechanism to record the angle θ1. The finger width value is converted into the concentric angle and recorded as θ2. The range of the concentric angle between the projection of a single finger and the projection of the mechanism protrusion is (θ2~θ1+θ2). As shown in the figure, when the four-finger gripper is holding the mechanism, if the protruding part of the mechanism is located in the range of 90°~180° within quadrant two and is at (90°+θ1+θ2 / 2), the gripper does not need to make any correction movements. Otherwise, it needs to rotate to avoid this angle range. The minimum avoidance angle is determined by the system itself. In this embodiment, the minimum avoidance angle is set to 1.5.

[0045] In summary, during operation, a water meter movement insertion device with visual correction function involves the manual or robotic arm grasping the housing 2-8 and placing it into the housing clamping device for initial positioning. The centering cylinder 2-12 then extends to radially correct and position the housing 2-8. Next, the larger-diameter left positioning cylinder 2-6 extends first, with its clamping block 2-15 serving as a positioning reference. The right positioning cylinder 2-1 then extends, with its clamping block 2-15 providing auxiliary positioning. The two clamping blocks 2-15, through their lower end face and one end contoured arc surface, achieve planar positioning of the outer contour of the housing 2-8, thus completing the precise positioning of the housing 2-8. The clamping fingers 2-3 remain open until the movement is inserted. During insertion, the three-axis gantry robot first moves to the top of the buffer platform 6. At this time, multiple mechanisms are placed in the tooling holes inside the buffer platform 6. The protrusions 5-14 on the mechanism have no fixed angular position in the 2D plane projection. Before the gantry robot grips, the intelligent camera 5-12 takes a picture of the mechanism inside the buffer platform 6. This is to record the angular position of the protrusions 5-14 on the mechanism and to calculate whether the multiple fingers 5-11 will overlap with the protrusions 5-14 when they grip below the projection. If there is an overlap, angle calculation is required to avoid it. Then, when the gripper moves the mechanism to the top of the housing clamping device, the intelligent camera 5-12 takes another picture of the angular position of the housing groove. The control system then processes and corrects the two pictures and performs interference avoidance correction. The rotating shaft module 5-2 rotates to drive the gripper device 5 to correct the angle, so that the protrusions of the mechanism and the housing groove match the angle. The gripper moves to insert the mechanism into the housing 2-8. It is important to note that before the movement is inserted, the guide rods of the three cylinders—right positioning cylinder 2-1, left positioning cylinder 2-6, and centering cylinder 2-12—in the housing clamping device 2 are all extended. This means the clamp connected by the three cylinders is clamping the housing 2-8, and the gripper of the clamping cylinder 2-2 is open. After the movement insertion gripper opens, the movement continues to fall to the predetermined height under its own weight. The detection unit detects the correct position, completing the automatic insertion of the movement. The Z-axis device 4 rises back to its initial position, the clamping cylinder 2-2 closes, and the inner arc surface of the clamping finger 2-3 engages with the external thread at the upper end of the housing 2-8. This ensures that the housing 2-8 maintains precise positioning in subsequent assembly stages and that the sealing rings, lenses, and other components placed later remain in a fixed position during movement.

[0046] In summary, the pneumatic gripper 5-10 used in the gripper device 5 can also be a pneumatic gripper 5-10 with three or more grippers while maintaining assembly accuracy; the housing clamping device 2 can be used as a standalone unit or installed on a linear or circular conveyor line; the buffer platform 6 can be used as a standalone unit or installed on a linear or circular conveyor line.

[0047] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0048] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this application described above do not constitute a limitation on the scope of protection of this application.

Claims

1. A water meter movement insertion device with visual correction function, characterized in that, include: The frame (1), the housing clamping device (2), the transfer mechanism X-axis device (3), the Z-axis device (4), the gripper device (5), and the buffer platform (6); The transfer mechanism X-axis device (3) includes multiple columns (3-1) fixed on the mounting platforms at both ends of the frame (1). An X-axis module (3-5) is installed on the upper end of each column (3-1). An X-axis drag chain (3-3) is installed on one side of the X-axis module (3-5). An XZ-axis connecting plate (3-4) is installed on the slide of the X-axis module (3-5). The Z-axis device (4) is vertically mounted on one end of the XZ-axis connecting plate (3-4), the gripper device (5) is mounted on the lower end face of the Z-axis device (4), and the housing clamp device (2) and the buffer platform (6) are mounted on the frame (1) and located directly below the X-axis module (3-5). The X-axis motion path of the three-axis truss manipulator consisting of the X-axis device (3), Z-axis device (4) and gripper device (5) of the transfer mechanism coincides with the center of the mechanism where the buffer platform (6) is placed; The gripper device (5) includes a gripper mounting plate (5-1) fixed to the lower end face of the Z-axis device (4). A pressure sensor (5-3), a cable chain bracket (5-4), and a three-way connector (5-5) for connecting to the system's air source are fixed on one side of the gripper mounting plate (5-1). A rotating shaft module (5-2) is mounted on the upper part of the other side of the gripper mounting plate (5-1), and a smart camera (5-12) is mounted on the lower part. A slip ring mounting seat (5-6), a slip ring (5-8), and a gripper mounting seat (5-9) are sequentially arranged on the lower end face of the rotating platform of the rotating shaft module (5-2). The slip ring (5-8) is connected to the air source of the system. The slip ring fixing bracket (5-7) is fixedly connected to one side of the gripper mounting plate (5-1). The rotary shaft (5-13) passing through the slip ring (5-8) is fixed on the lower end face of the rotary table of the rotary shaft module (5-2). The gripper mounting seat (5-9) is fixedly connected to the rotary shaft (5-13) and the angular relationship is fixed. The lower end of the gripper mounting seat (5-9) is fixedly connected to a pneumatic gripper (5-10). Multiple fingers (5-11) are installed on the lower end of the pneumatic gripper (5-10). The inner gripping surface of each finger (5-11) is arc-shaped, so that its gripping surface and the outer circular surface of the mechanism are closely fitted. The housing clamping device (2) includes a base plate (2-10) fixed to the mounting platform of the frame (1). A pair of detection units (2-9) are installed diagonally on the base plate (2-10). A right positioning cylinder (2-1) and a left positioning cylinder (2-6) with a cylinder diameter larger than that of the right positioning cylinder (2-1) are fixed on both sides of the base plate (2-10). Clamping blocks (2-15) are installed on the rod end faces of the right positioning cylinder (2-1) and the left positioning cylinder (2-6). A support plate (2-5) located between the right positioning cylinder (2-1), the left positioning cylinder (2-6) and the detection unit (2-9) is fixed on the upper end face of the base plate (2-10). A valve island (2-4) and a clamping cylinder (2-2) are installed at the uppermost end of the support plate (2-5). Two clamping fingers are installed on the clamping cylinder (2-2). (2-3) A front positioning block (2-7) and a rear positioning block (2-11) are fixed on the base plate (2-10) between the right positioning cylinder (2-1) and the left positioning cylinder (2-6). A centering cylinder (2-12) is installed on one side of the rear positioning block (2-11). A bushing (2-16) is fixed inside both the front positioning block (2-7) and the rear positioning block (2-11). A centering shaft (2-14) that is clearance-fitted with the bushing (2-16) is threaded onto the guide rod of the centering cylinder (2-12). A spring (2-13) that cooperates with the bushing (2-16) is fitted on the centering shaft (2-14). The housing (2-8) is placed on the support plate (2-5) and is located between the right positioning cylinder (2-1) and the left positioning cylinder (2-6), corresponding to the clamping finger (2-3).

2. The water meter movement insertion device with visual correction function according to claim 1, characterized in that, The inner arc surface of the clamping finger (2-3) is in contact with the upper outer thread of the outer side of the housing (2-8).

3. The water meter movement insertion device with visual correction function according to claim 1, characterized in that, The pneumatic gripper (5-10) has three fingers (5-11) installed at its lower end.

4. The water meter movement insertion device with visual correction function according to claim 1, characterized in that, The small end thread of the mandrel (2-14) is connected to the guide rod thread of the mandrel cylinder (2-12).

5. The water meter movement insertion device with visual correction function according to claim 1, characterized in that, The output end center through hole of the gripper mounting base (5-9) and the output end threaded hole of the rotating shaft (5-13) are fixedly connected by bolts.

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