Automatic alignment device for combination of vibrating cylinder and sensor base frame

Abstract

The utility model discloses an automatic alignment device for combination of a vibrating cylinder and a sensor base frame, which belongs to the technical field of resonant sensor manufacturing equipment and comprises a frame, and a robot, a vibrating cylinder mounting component, a base frame rotating component, an optimal resonance point online monitoring component and a spot welder are arranged on the frame. The robot combines the vibration cylinder and the sensor base frame and then places the vibration cylinder and the sensor base frame into a clamp in the vibration cylinder installation assembly for fixation. The robot connects a wire harness with a plug in the sensor base frame with the wire harness quick connector to achieve connection of a test circuit, and the base frame rotating assembly clamps and drives the sensor base frame to rotate in the circumferential direction. By recording the rotation angle and the corresponding output period, the optimal resonance point is automatically determined, the positions of the sensor base frame and the vibration cylinder are fixed through the spot welding machine, and the problem that the product performance is unstable due to the fact that the vibration cylinder and the sensor rack are manually aligned in the prior art, and the positioning error is large is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of manufacturing equipment for resonant sensors, and particularly relates to an automatic alignment device for the combination of a vibrating cylinder and a sensor base. Background Art

[0002] The vibrating cylinder pressure sensor is a resonant sensor. Its working principle is that the vibrating cylinder performs resonant work through the induced electromotive force generated by the coil on the sensor base combination, and the pressure is calculated through the resonant period. Therefore, whether the vibrating cylinder is in the best resonant state will directly affect the accuracy and startup time of the sensor. And the alignment of the combination of the vibrating cylinder and the sensor base directly determines whether the vibrating cylinder is in the best resonant state. Alignment is a key process in the production and assembly of sensors. Once the alignment is inaccurate, it will directly affect the resonant state, resulting in out-of-tolerance product accuracy and unstable performance. And because the vibrating cylinder and the base combination will be welded after alignment to fix the relative position. The performance test of the product can only be carried out after welding, which will cause defects not to be removed in time and increase the number of scrapped components in the later stage.

[0003] At present, there is a lack of corresponding means to accurately determine the relative position inside. The manual rotation alignment and human eye observation method is adopted, with large errors, resulting in some products not resonating at the best position, and there is a hidden danger of unstable vibration mode leading to unstable product performance. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the automatic alignment device for the combination of a vibrating cylinder and a sensor base provided by the utility model solves the problem that the existing manual alignment of the vibrating cylinder and the sensor frame by humans has large positioning errors, resulting in unstable product performance.

[0005] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is as follows:[[]]

[0006] An automatic alignment device for the combination of a vibrating cylinder and a sensor base is provided, which includes a frame, on which a robot, a vibrating cylinder mounting component, a base rotation component, an on-line monitoring component for the best resonant point and a spot welder are arranged;

[0007] The vibrating cylinder mounting component includes a mounting plate detachably connected to the upper end surface of the frame. A clamp for clamping or relaxing the vibrating cylinder is arranged on the mounting plate, and a driving cylinder for driving the clamp to clamp or relax is arranged on one side of the clamp; a sensor base with a wire harness is arranged at the top of the vibrating cylinder;

[0008] The base rotation component is used to clamp and drive the sensor base to rotate circumferentially;

[0009] The online monitoring component for the optimal resonance point includes a mounting bracket disposed on one side of the vibration cylinder mounting component. A wire harness quick connector is provided on the mounting bracket, and the wire harness quick connector is electrically connected to a power supply and a frequency meter;

[0010] A robot is used to connect the wire harness to the wire harness quick connector;

[0011] A spot welder is disposed on one side of the vibration cylinder mounting component, and the spot welder is used to spot-weld and fix the vibration cylinder and the sensor base.

[0012] The basic principle of the present utility model is as follows: After the vibration cylinder and the sensor base are combined by a robot, they are placed into the fixture in the vibration cylinder mounting component, and the fixture is driven by a driving cylinder to clamp the vibration cylinder. The robot connects the wire harness with a plug in the sensor base to the wire harness quick connector to realize the connection of the test circuit, and the base rotation component clamps and drives the sensor base to rotate circumferentially. By recording the rotation angle and the corresponding output period, the rotation angle of the maximum period is automatically determined, and the rotation angle of the maximum period is the optimal resonance point. After determining the optimal resonance point, the bonding surface between the sensor base and the vibration cylinder is spot-welded by a spot welder to fix the position between the sensor base and the vibration cylinder.

[0013] Further, as a specific setting manner of the fixture in the vibration cylinder mounting component, the fixture includes a fixed seat. An installation hole is provided at the central position of the fixed seat, and the bottom of the vibration cylinder is disposed in the installation hole. A fixed clamping plate and a movable clamping plate are provided on the upper end surface of the fixed seat. Clamping notches for clamping the circumferential outer wall of the vibration cylinder are provided on both inner side surfaces of the fixed clamping plate and the movable clamping plate; the telescopic end of the driving cylinder is fixedly connected to the outer side surface of the movable clamping plate through a connecting rod.

[0014] Further, the vertical projection of the clamping notch is a V-shaped structure. The setting of the V-shaped clamping notch can not only increase the contact area between the clamping notch and the circumferential outer wall of the vibration cylinder, but also realize the automatic alignment of the vibration cylinder.

[0015] Further, fixing rods are provided on both the front and the back of the fixed clamping plate and the movable clamping plate, and a return spring is horizontally arranged between the fixing rods located on the front and the back; the return spring is in a stretched state, and applies tensile forces to the two fixing rods located on the front and the back respectively, forcing the fixed clamping plate and the movable clamping plate to always be in a clamped state, and the fixture can also clamp and fix the vibration cylinder when the driving cylinder fails.

[0016] Further, as a specific setting mode of the base frame rotation assembly, the base frame rotation assembly includes an upright frame. A guide rail and a lifting cylinder are vertically arranged on the upright frame. A mounting block is slidably arranged on the guide rail. The output end of the lifting cylinder is fixedly connected to the mounting block. An electric rotary machine is arranged on the mounting block. A rotary gripper is arranged at the bottom of the electric rotary machine. The rotary gripper is located at the top of the sensor base frame. The lifting cylinder drives the electric rotary machine on the mounting block to perform vertical reciprocating motion on the guide rail. The rotary gripper clamps the sensor base frame to perform circular rotation, and cooperates with the optimal resonance point on-line monitoring assembly to automatically determine the rotation angle of the maximum period, and realize the automatic alignment of the combination of the vibration cylinder and the sensor base frame.

[0017] Further, a fixing plate is arranged at the top of the mounting frame. A wire harness storage groove is arranged on the upper end surface of the fixing plate. A wire passing notch communicating with the inside thereof is arranged on one side of the wire harness storage groove. The robot stores the wire harness on the sensor base frame into the wire harness storage groove through the wire passing notch, avoiding the wire harness being crushed by moving parts.

[0018] Further, the spot welder is a laser welder.

[0019] The beneficial effects of the present utility model are as follows: The automatic alignment device for the combination of the vibration cylinder and the sensor base frame provided by this solution replaces the cumbersome manual operation in the automatic alignment process, reduces the manual participation, reduces the labor intensity of the operators, and at the same time avoids the alignment error caused by human factors, improves the safety and reliability of production, significantly shortens the production cycle, and improves the production efficiency; at the same time, an optimal resonance point on-line monitoring assembly is provided to ensure that after the automatic alignment of the combination of the vibration cylinder and the sensor base frame, the vibration cylinder is in the optimal resonance state, effectively reducing the positioning error and improving the measurement accuracy and stability of the product. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an automatic alignment device for the combination of a vibration cylinder and a sensor base frame.

[0021] Figure 2 It is an enlarged three-dimensional structural schematic diagram of the vibration cylinder mounting assembly and the optimal resonance point on-line monitoring assembly.

[0022] Figure 3 It is an enlarged three-dimensional structural schematic diagram of the base frame rotation assembly.

[0023] Among them, 1. Frame; 2. Robot; 3. Vibration cylinder installation assembly; 301. Mounting plate; 302. Fixture; 3021. Fixed seat; 3022. Fixed clamping plate; 3023. Movable clamping plate; 303. Driving cylinder; 4. Base frame rotation assembly; 401. Upright frame; 402. Guide rail; 403. Lifting cylinder; 404. Mounting block; 405. Electric rotating machine; 406. Rotating jaw; 5. Optimal resonance point on-line monitoring assembly; 501. Mounting frame; 502. Wiring harness quick connector; 503. Fixed plate; 6. Spot welder; 7. Vibration cylinder; 8. Sensor base frame; 9. Wiring harness; 10. Clamping notch; 11. Connecting rod; 12. Fixed rod; 13. Return spring; 14. Wiring harness storage groove; 15. Wiring notch. Specific embodiments

[0024] The following describes the specific embodiments of the present invention to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present invention are within the scope of protection.

[0025] As Figures 1 to 3 shown, the present invention provides an automatic alignment device for the combination of a vibration cylinder and a sensor base frame, which includes a frame 1, on which a robot 2, a vibration cylinder installation assembly 3, a base frame rotation assembly 4, an optimal resonance point on-line monitoring assembly 5, and a spot welder 6 are provided.

[0026] The vibration cylinder installation assembly 3 includes a mounting plate 301 detachably connected to the upper end surface of the frame 1. A fixture 302 for clamping or releasing the vibration cylinder 7 is provided on the mounting plate 301. A driving cylinder 303 for driving the fixture 302 to clamp or release is provided on one side of the fixture 302; a sensor base frame 8 with a wiring harness 9 is provided at the top of the vibration cylinder 7; the base frame rotation assembly 4 is used to clamp and drive the sensor base frame 8 to rotate circumferentially; the optimal resonance point on-line monitoring assembly 5 includes a mounting frame 501 provided on one side of the vibration cylinder installation assembly 3. A wiring harness quick connector 502 is provided on the mounting frame 501, and the wiring harness quick connector 502 is electrically connected to a power supply and a frequency meter; the robot 2 is used to connect the wiring harness 9 to the wiring harness quick connector 502; the spot welder 6 is provided on one side of the vibration cylinder installation assembly 3, and the spot welder 6 is used to spot-weld and fix the vibration cylinder 7 and the sensor base frame 8. Preferably but not limitedly, the spot welder 6 can be a laser welder.

[0027] When automatically aligning the vibrating cylinder 7 and the sensor base 8, the vibrating cylinder 7 and the sensor base are combined by the robot 2 and placed into the fixture 302 in the vibrating cylinder mounting assembly 3. The fixture 302 is driven by the driving cylinder 303 to clamp the vibrating cylinder 7. The robot 2 connects the wire harness 9 with a plug in the sensor base 8 to the wire harness quick connector 502 to connect the test circuit. The base rotation assembly 4 clamps and drives the sensor base 8 to rotate circumferentially. By recording the rotation angle and the corresponding output period, the rotation angle corresponding to the maximum period is automatically determined, and the rotation angle corresponding to the maximum period is the optimal resonance point. After determining the optimal resonance point, the bonding surface between the sensor base 8 and the vibrating cylinder 7 is spot-welded by the spot welder 6 to fix the position between the sensor base 8 and the vibrating cylinder 7.

[0028] Specifically, as Figure 1 and Figure 2 shown, as a specific setting method of the fixture 302 in the vibrating cylinder mounting assembly 3, the fixture 302 includes a fixed seat 3021. An installation hole is provided at the central position of the fixed seat 3021, and the bottom of the vibrating cylinder 7 is arranged in the installation hole. A fixed clamping plate 3022 and a movable clamping plate 3023 are arranged on the upper end surface of the fixed seat 3021. Clamping notches 10 for clamping the circumferential outer wall of the vibrating cylinder 7 are arranged on both inner side surfaces of the fixed clamping plate 3022 and the movable clamping plate 3023. The telescopic end of the driving cylinder 303 is fixedly connected to the outer side surface of the movable clamping plate 3023 through a connecting rod 11.

[0029] The vertical projection of the clamping notch 10 is a V-shaped structure. The setting of the V-shaped structure clamping notch 10 can not only increase the contact area between the clamping notch 10 and the circumferential outer wall of the vibrating cylinder 7, but also realize the automatic centering of the vibrating cylinder 7.

[0030] Fixed rods 12 are arranged on both the front and back surfaces of the fixed clamping plate 3022 and the movable clamping plate 3023. A return spring 13 is horizontally arranged between the fixed rods 12 on the front and back surfaces. The return spring 13 is in a stretched state and applies tensile forces to the two fixed rods 12 on the front and back surfaces respectively, forcing the fixed clamping plate 3022 and the movable clamping plate 3023 to always be in a clamped state. When the driving cylinder 303 fails, the fixture 302 can also clamp and fix the vibrating cylinder 7.

[0031] Preferably but not limited to, a fixing plate 503 is arranged at the top of the mounting frame 501. A wire harness storage groove 14 is arranged on the upper end surface of the fixing plate 503. A wire passing notch 15 communicating with the inside thereof is arranged on one side of the wire harness storage groove 14. The robot 2 stores the wire harness 9 on the sensor base 8 into the wire harness storage groove 14 through the wire passing notch 15 to prevent the moving parts from pressing and damaging the wire harness 9.

[0032] As Figure 1 and Figure 3As shown in the figure, as a specific setting method of the base frame rotation assembly 4, the base frame rotation assembly 4 includes an upright frame 401. A guide rail 402 and a lifting cylinder 403 are vertically arranged on the upright frame 401. A mounting block 404 is slidably arranged on the guide rail 402. The output end of the lifting cylinder 403 is fixedly connected to the mounting block 404. An electric rotary machine 405 is arranged on the mounting block 404. A rotary gripper 406 is arranged at the bottom of the electric rotary machine 405. The rotary gripper 406 is located at the top of the sensor base frame 8. The lifting cylinder 403 drives the electric rotary machine 405 on the mounting block 404 to perform vertical reciprocating motion on the guide rail 402. The rotary gripper 406 clamps the sensor base frame 8 to perform circular rotation, and cooperates with the optimal resonance point online monitoring assembly 5 to automatically determine the rotation angle of the maximum period, so as to realize the automatic alignment of the combination of the vibration cylinder 7 and the sensor base frame 8.

[0033] In summary, the automatic alignment device for the combination of the vibration cylinder and the sensor base frame provided by this solution replaces the cumbersome manual operation in the automatic alignment process, reduces the manual participation, reduces the labor intensity of the operators, and at the same time avoids the alignment error caused by human factors, improves the safety and reliability of production, significantly shortens the production cycle, and improves the production efficiency; at the same time, an optimal resonance point online monitoring assembly 5 is provided to ensure that after the combination of the vibration cylinder 7 and the sensor base frame 8 is automatically aligned, the vibration cylinder 7 is in the optimal resonance state, effectively reducing the positioning error and improving the measurement accuracy and stability of the product.

Claims

1. An automatic alignment device for the combination of a vibrating cylinder and a sensor base frame, characterized in that, It includes a frame, on which a robot, a vibration cylinder mounting assembly, a base frame rotation assembly, an on-line monitoring assembly for the optimal resonance point, and a spot welder are provided; The vibration cylinder mounting assembly includes a mounting plate detachably connected to the upper end surface of the frame. A fixture for clamping or loosening the vibration cylinder is provided on the mounting plate, and a driving cylinder for driving the fixture to clamp or loosen is arranged on one side of the fixture; a sensor base frame with a wire harness is provided at the top of the vibration cylinder; The base frame rotation assembly is used to clamp and drive the sensor base frame to rotate circumferentially; The on-line monitoring assembly for the optimal resonance point includes a mounting frame arranged on one side of the vibration cylinder mounting assembly. A wire harness quick connector is provided on the mounting frame, and the wire harness quick connector is electrically connected to a power supply and a frequency meter; The robot is used to place the vibration cylinder and the sensor base frame whose positions are to be fixed and combined into the fixture and to connect the wire harness to the wire harness quick connector; The spot welder is arranged on one side of the vibration cylinder mounting assembly, and the spot welder is used to spot-weld and fix the vibration cylinder and the sensor base frame.

2. The automatic alignment device for the combination of the vibrating cylinder and the sensor base according to claim 1, characterized in that The fixture includes a fixed seat. A mounting hole is provided at the central position of the fixed seat. The bottom of the vibration cylinder is arranged in the mounting hole. A fixed clamping plate and a movable clamping plate are provided on the upper end surface of the fixed seat. Clamping notches for clamping the circumferential outer wall of the vibration cylinder are provided on the inner side surfaces of the fixed clamping plate and the movable clamping plate; the telescopic end of the driving cylinder is fixedly connected to the outer side surface of the movable clamping plate through a connecting rod.

3. The automatic alignment device for the combination of a vibrating cylinder and a sensor base according to claim 2, characterized in that, The vertical projection of the clamping notch is a V-shaped structure.

4. The automatic alignment device for the combination of a vibrating cylinder and a sensor base according to claim 3, characterized in that, Fixed rods are provided on the front and back surfaces of the fixed clamping plate and the movable clamping plate, and a return spring is horizontally arranged between the fixed rods located on the front and back surfaces.

5. The automatic alignment device for the combination of a vibrating cylinder and a sensor base according to claim 4, characterized in that, The base frame rotation assembly includes an upright frame. A guide rail and a lifting cylinder are vertically arranged on the upright frame. A mounting block is slidably arranged on the guide rail. The output end of the lifting cylinder is fixedly connected to the mounting block. An electric rotary machine is provided on the mounting block, and a rotary gripper is arranged at the bottom of the electric rotary machine. The rotary gripper is located at the top of the sensor base frame.

6. The automatic alignment device for the combination of the vibrating cylinder and the sensor base according to claim 5, characterized in that, A fixing plate is provided at the top of the mounting frame. A wire harness storage groove is provided on the upper end surface of the fixing plate, and a wire passing notch communicating with the inside is provided on one side of the wire harness storage groove.

7. The automatic alignment device for the combination of a vibrating cylinder and a sensor base according to any one of claims 1 to 6, characterized in that, The spot welder is a laser welder.

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