A mute detection device for clock spring production

Abstract

The application discloses a mute detection equipment for clock spring production, which comprises a mute detection input module, a mute detection output module, a mute detection carrying module and a mute detection module, the mute detection input module is used for sequentially transmitting clock springs to be detected to the waiting grabbing position of the mute detection carrying module, the mute detection output module is used for sequentially moving the clock springs after detection from the initial output position to the final output position, and the mute detection carrying module comprises a mute detection multi-axis driver, a waiting detection grabbing unit, a detection completion grabbing unit and a mute detection transmission block grabbing unit which are installed on the output end of the mute detection multi-axis driver. The mute detection equipment for clock spring production solves the defects that the existing manual detection of clock spring abnormal sound has large error, low detection efficiency, working condition simulation distortion and cannot be automatically matched with the assembly line.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive parts testing equipment, specifically relating to a silent testing device for clock spring production. Background Technology

[0002] The clock spring, also known as the airbag clock spring, is a key connecting component installed inside the car steering wheel. It ensures continuous conduction of the circuitry for the airbag and multi-function buttons during steering wheel rotation. The clock spring consists of an outer shell, a relatively rotatable inner shell, and internally wound flexible flat cables. After production and assembly, if the internal wiring is misaligned, the shell clearance is abnormal, or there is frictional interference from the plastic parts, abnormal noise will be generated when the steering wheel is turned, severely affecting the overall driving and riding experience. Products with severe abnormal noise may be scrapped upon leaving the factory.

[0003] Current detection methods mostly involve manually rotating a clock spring by hand, relying on the human ear to detect abnormal sounds, which has the following drawbacks: 1. Manual inspection has a large subjective error. Different operators have different hearing sensitivity, and the criteria for judging abnormal noises are not uniform, resulting in a high rate of missed detection and false detection. 2. Manual operation is inefficient and cannot meet the needs of mass production on automated production lines; 3. There is no standardized noise collection and quantitative judgment mechanism, making it impossible to retain test data and making product quality traceability difficult; 4. The lack of a dedicated tooling positioning and clamping structure makes the inner and outer shells of the clock spring prone to shifting during rotation. The simulated working conditions differ greatly from the actual vehicle usage conditions, resulting in distorted test results.

[0004] Therefore, there is an urgent need to develop an automated, standardized, and real-vehicle-rotational-condition-simulating clock spring noise detection equipment, along with standardized testing processes, to solve the technical problems of low accuracy, poor efficiency, and unrealistic simulation of operating conditions in manual testing. Summary of the Invention

[0005] The main objective of this invention is to provide a silent testing device for clock spring production, which solves the shortcomings of existing manual clock spring noise testing, such as large judgment errors, low testing efficiency, distorted working condition simulation, and inability to be integrated into automated production lines. This invention achieves fully automated operation of the clock spring process, including automated feeding, automated tooling assembly, simulated vehicle rotation, automated noise collection and judgment, and automated sorting and unloading of qualified / unqualified products. It also unifies noise judgment standards, improves testing accuracy and production efficiency, and enables traceability of testing data.

[0006] To achieve the above objectives, the present invention provides a noise detection device for clock spring production, comprising a noise detection input module, a noise detection output module, a noise detection conveying module, and a noise detection module, wherein: The silence detection input module is used to sequentially transfer the clock springs to be detected to the grasping position of the silence detection transport module; the silence detection output module is used to sequentially move the detected clock springs from the initial output position to the final output position. The silent detection and handling module includes a silent detection multi-axis driver and a gripping unit to be detected, a gripping unit after detection, and a gripping unit for a silent detection transmission block, all mounted on the output end of the silent detection multi-axis driver. The gripping unit to be detected is used to grip the clock spring at the position to be gripped and place it onto the silent detection table of the silent detection module via the silent detection multi-axis driver. The gripping unit after detection is used to grip the clock spring after detection and place it onto the initial output position of the silent detection output module via the silent detection multi-axis driver. The gripping unit for a silent detection transmission block is used to install the silent detection transmission block onto the silent detection table before detection and to remove the silent detection transmission block from the silent detection table after detection. The noise detection module is used to simulate the rotation of a clock spring and detect noise. It includes a noise detection motor, a noise detection platform, a noise detection transmission block, and a noise sensor. The noise detection motor, in conjunction with the noise detection transmission block, drives the clock spring mounted on the noise detection platform to rotate. The noise sensor is used to detect the noise generated by the clock spring during rotation.

[0007] As a further preferred embodiment of the above technical solution, both the silence detection input module and the silence detection output module include a silence detection transmission and capture unit and a silence detection conveying unit, wherein: The silence detection transmission gripping unit includes a first silence detection bracket, a first silence detection horizontal driver, a first silence detection vertical driver, a first silence detection thumb cylinder, and a second silence detection thumb cylinder. The first silence detection horizontal driver is mounted on the first silence detection bracket, the first silence detection vertical driver is mounted on the drive end of the first silence detection horizontal driver, the first silence detection thumb cylinder is mounted on the drive end of the first silence detection vertical driver, and the second silence detection thumb cylinder is mounted on the first silence detection thumb cylinder. Both the first silence detection thumb cylinder and the second silence detection thumb cylinder are used to grip the clock spring. The silent detection conveying unit includes a silent detection conveying bracket, a silent detection conveying chain, a silent detection conveying motor, and several silent detection conveying plates. The silent detection conveying chain and the silent detection conveying motor are both mounted on the silent detection conveying bracket. The silent detection conveying motor is used to drive the silent detection conveying chain to rotate, and to make the silent detection conveying plates mounted on the silent detection conveying chain move synchronously.

[0008] As a further preferred technical solution of the above technical solution, the silent detection workbench is located on the side of the silent detection motor near the silent detection transport module. The silent detection workbench is equipped with a first silent detection clamping cylinder and a second silent detection clamping cylinder. The clock spring to be detected is grasped by the detection gripping unit and placed between the first silent detection clamping cylinder and the second silent detection clamping cylinder by the silent detection multi-axis driver, and the outer shell of the clock spring is clamped by the two cylinders facing each other.

[0009] As a further preferred embodiment of the above technical solution, the drive end of the silent detection motor passes through both the silent detection platform and the clock spring. During detection, the silent detection transmission block is gripped by the silent detection transmission block gripping unit and fixed to the drive end of the silent detection motor via a silent detection multi-axis driver. The silent detection transmission block has silent detection insertion holes at both ends, and the two mounting posts of the clock spring's inner shell are respectively inserted into these holes. This ensures the silent detection transmission block is securely mounted between the drive end of the silent detection motor and the inner shell of the clock spring. When the silent detection motor rotates, the inner shell of the clock spring rotates synchronously via the silent detection transmission block, simulating the rotation of the clock spring. Simultaneously, a noise sensor located on one side of the clock spring performs detection. After detection, the silent detection transmission block is gripped by the silent detection transmission block gripping unit and pulled out via the silent detection multi-axis driver, detaching from the drive end of the silent detection motor and the mounting posts of the clock spring's inner shell.

[0010] As a further preferred technical solution of the above technical solution, the middle part of the silent detection transmission block is provided with a drive end socket, the drive end socket is located between two silent detection sockets and the drive end socket is used to be plugged and locked with the drive end of the silent detection motor.

[0011] As a further preferred technical solution to the above technical solution, the working process of the noise detection equipment is as follows: Step S1, Automated Continuous Feeding: For the silent detection input module, the double thumb cylinders of the silent detection transmission gripping unit hold the clock spring to be detected and place it on the silent detection conveyor plate. The silent detection conveyor motor drives the silent detection conveyor chain to rotate in a cycle. The silent detection conveyor plate loaded with the clock spring to be detected moves to the gripping position and waits for the silent detection transport module to grip it. Step S2, Product Transfer and Loading: The silent detection multi-axis driver of the silent detection and handling module drives the gripping unit to be detected to move to the gripping position, grips the clock spring and transfers it to the silent detection workbench of the silent detection module; Step S3, Product housing locking and positioning: The first and second silent detection clamping cylinders on the silent detection workbench extend synchronously in opposite directions, clamping the clock spring housing in both directions, locking the housing, leaving only the inner housing rotatable; Step S4, Automatic Assembly and Docking of Tooling: The silent detection transmission block gripping unit grips the silent detection transmission block, moves it to the position of the silent detection motor drive shaft, and inserts and locks the drive end socket in the middle of the transmission block into the motor drive shaft; at the same time, the two mounting posts of the clock spring inner shell are inserted into the silent detection sockets on both sides of the transmission block to complete the torque transmission connection of the motor, transmission block, and clock spring inner shell. Step S5, Simulated Rotation and Noise Acquisition and Judgment: Start the silent detection motor and rotate the inner shell of the clock spring relative to the outer shell according to the preset speed and alternating forward and reverse cycles to replicate the left and right rotation of a car steering wheel; the noise sensor arranged on the side of the workbench collects the noise signal generated by the friction and collision of the clock spring in real time throughout the process, and transmits the noise decibel and waveform data to the host computer in real time; the host computer retrieves the preset noise qualified threshold, compares the collected noise data in real time, automatically determines whether the clock spring is a qualified product or a defective product with abnormal noise, and records the detection data and judgment results; Step S6, Automatic disassembly of tooling: After noise detection and judgment are completed, the silent detection motor stops running; the silent detection transmission block gripping unit clamps the silent detection transmission block and pulls it outward, so that the drive end socket is disengaged from the motor drive shaft and the silent detection sockets on both sides are disengaged from the clock spring inner shell mounting post, thus completing the tooling separation. Step S7: Release the product clamping: The first silent detection clamping cylinder and the second silent detection clamping cylinder retract synchronously, releasing the clamping limit on the clock spring housing; Step S8, Finished Product Transfer and Unloading: After the detection of the silent detection and handling module is completed, the gripping unit grips the clock spring that has been detected on the silent detection workbench and transfers it to the initial output position of the silent detection output module. Step S9, Automatic Material Sorting and Storage: The silent detection conveying unit of the silent detection output module transports the clock springs that have completed the test to the end unloading area; the material sorting robot of the silent detection output module receives the qualified / defective judgment signal transmitted by the host computer, grabs the qualified clock springs to the qualified product storage area, and grabs the clock springs with abnormal noise to the defective product rework area, thus completing the silent detection process of a single product. Step S10, Cyclic Detection: The equipment repeatedly executes steps S1-S9 to complete the automated silent detection of multiple clock springs on the production line. All detection data is synchronously stored in the host computer to achieve product quality traceability.

[0012] The beneficial effects of this invention are as follows: 1. Fully automated operation, eliminating the need for manual intervention in transportation, tooling disassembly and assembly, and noise detection, adapting to mass production on assembly lines and significantly improving testing efficiency; 2. The dual-cylinder clamping and fixing of the outer shell and the transmission block precisely connect to the inner shell, perfectly replicating the steering wheel rotation condition of a real vehicle, ensuring a realistic testing condition and highly reliable test results. 3. The double thumb cylinder clamping and transfer effectively prevents the inner and outer shells of the clock spring from shifting during the transfer process, avoiding premature damage to the product that could interfere with the test results; 4. The noise sensor, combined with the host computer, makes quantitative judgments, standardizes the noise qualification threshold, eliminates subjective errors of human hearing, and greatly reduces the rate of missed detection and false detection. 5. The tooling is automatically disassembled and assembled, eliminating the need for manual assembly of the transmission block, reducing the intensity of manual labor, and ensuring consistent positioning in each assembly. 6. The output module can automatically sort and store qualified and unqualified products according to the detection and judgment results of the host computer, which facilitates the centralized rework of defective products, and the detection data can be stored and traced synchronously. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the noise detection device of the present invention.

[0014] Figure 2 This is a schematic diagram of the silence detection input / output module of the present invention.

[0015] Figure 3 This is a structural schematic diagram of the silent detection and handling module of the present invention.

[0016] Figure 4 This is a structural schematic diagram of the noise detection module of the present invention.

[0017] The reference numerals in the attached drawings include: 1-clock spring; 11-outer shell; 12-inner shell; 510-silence detection input module; 511-silence detection transmission gripping unit; 512-silence detection conveying unit; 5111-first silence detection bracket; 5112-first silence detection horizontal driver; 5113-first silence detection vertical driver; 5114-first silence detection thumb cylinder; 5115-second silence detection thumb cylinder; 5121-silence detection conveying bracket; 5122-silence detection conveying chain; 5123-silence detection conveying motor; 512 4-Silent detection conveyor plate; 520-Silent detection output module; 530-Silent detection handling module; 531-Silent detection multi-axis driver; 532-Grip unit to be tested; 533-Grip unit after detection; 534-Silent detection transmission block gripping unit; 540-Silent detection module; 541-Silent detection motor; 542-Silent detection workbench; 543-Silent detection transmission block; 5421-First silent detection clamping cylinder; 5422-Second silent detection clamping cylinder; 5431-Drive end socket; 5432-Silent detection socket. Detailed Implementation

[0018] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0019] In a preferred embodiment of the present invention, those skilled in the art should note that the clock spring and the like involved in the present invention can be considered prior art.

[0020] Preferred embodiment.

[0021] like Figure 1-4 As shown, this invention discloses a noise detection device for clock spring production, including a noise detection input module 510, a noise detection output module 520, a noise detection conveying module 530, and a noise detection module 540, wherein: The silence detection input module 510 is used to sequentially transfer the clock spring 1 to be detected to the gripping position of the silence detection transport module 530; the silence detection output module 520 is used to sequentially move the clock spring 1 that has been detected from the initial output position to the final output position (at the final output position, it can be gripped and unloaded by a robot arm, and different areas can be gripped according to whether the detection is qualified or not). The silent detection transport module 530 includes a silent detection multi-axis driver 531 and a detection gripping unit 532, a detection completion gripping unit 533, and a silent detection transmission block gripping unit 534 installed at the output end of the silent detection multi-axis driver 531. The detection gripping unit 532 is used to grip the clock spring 1 at the position to be gripped and place it on the silent detection table 542 of the silent detection module 540 through the silent detection multi-axis driver 531. The detection completion gripping unit 533 is used to grip the clock spring 1 after detection and place it on the initial output position of the silent detection output module 520 through the silent detection multi-axis driver 531. The silent detection transmission block gripping unit 534 is used to install the silent detection transmission block 543 on the silent detection table 542 before detection and to pull the silent detection transmission block 543 off the silent detection table 542 after detection. The noise detection module 540 is used to simulate the rotation of the clock spring 1 and detect noise. It includes a noise detection motor 541, a noise detection platform 542, a noise detection transmission block 543, and a noise sensor (not shown). The noise detection motor 541, in conjunction with the noise detection transmission block 543, drives the clock spring 1 installed on the noise detection platform 542 to rotate (the outer shell is fixed, and the inner shell is driven to rotate, simulating the working condition). The noise sensor is used to detect the noise generated by the clock spring 1 during rotation (in conjunction with the host computer, it is determined whether the noise generated meets the standard).

[0022] The silent detection workbench 542 is located on the side of the silent detection motor 541 near the silent detection transport module 530. The silent detection workbench 542 is equipped with a first silent detection clamping cylinder 5421 and a second silent detection clamping cylinder 5422. The clock spring 1 to be detected is gripped by the gripping unit 532 and placed between the first silent detection clamping cylinder 5421 and the second silent detection clamping cylinder 5422 by the silent detection multi-axis driver 531, and the outer shell 11 of the clock spring 1 is clamped by the two opposing forces.

[0023] The drive end of the silent detection motor 541 passes through both the silent detection platform 542 and the clock spring 1. During detection, the silent detection transmission block 543 is gripped by the silent detection transmission block gripping unit 534 and fixed to the drive end of the silent detection motor 541 via the silent detection multi-axis driver 531. The silent detection transmission block 543 has silent detection insertion holes 5432 at both ends. The two mounting posts (covered with silicone tubes) of the inner shell 12 of the clock spring 1 are respectively inserted into the silent detection insertion holes 5432, thus ensuring the silent detection transmission block 543 is securely mounted on the silent detection motor 541. Between the drive end of the motor 541 and the inner shell 12 of the clock spring 1, when the silent detection motor 541 rotates, it synchronously drives the inner shell 12 of the clock spring 1 to rotate (the inner shell rotates relative to the outer shell) through the silent detection transmission block 543, thus simulating the rotation condition of the clock spring 1. At the same time, the noise sensor located on one side of the clock spring 1 performs detection. After the detection is completed, the silent detection transmission block 543 is grasped by the silent detection transmission block gripping unit 534 and pulled out by the silent detection multi-axis driver 531, disengaging from the drive end of the silent detection motor 541 and the mounting post of the inner shell 12 of the clock spring 1.

[0024] The middle part of the noise detection transmission block 543 is provided with a drive end insertion hole 5431. The drive end insertion hole 5431 is located between two noise detection insertion holes 5432 and is used to be inserted and locked with the drive end of the noise detection motor 541.

[0025] Specifically, both the silence detection input module 510 and the silence detection output module 520 include a silence detection transmission and capture unit 511 and a silence detection conveying unit 512, wherein: The silence detection transmission gripping unit 511 includes a first silence detection bracket 5111, a first silence detection horizontal driver 5112, a first silence detection vertical driver 5113, a first silence detection thumb cylinder 5114, and a second silence detection thumb cylinder 5115. The first silence detection horizontal driver 5112 is mounted on the first silence detection bracket 5111, the first silence detection vertical driver 5113 is mounted on the drive end of the first silence detection horizontal driver 5112, the first silence detection thumb cylinder 5114 is mounted on the drive end of the first silence detection vertical driver 5113, and the second silence detection thumb cylinder 5115 is mounted on the first silence detection thumb cylinder 5114. Both the first silence detection thumb cylinder 5114 and the second silence detection thumb cylinder 5115 are used to grip the clock spring 1 (to improve the stability during gripping, the clock spring is gripped by the grippers of the two thumb cylinders to prevent the two housings from rotating relative to each other during transmission). The silent detection conveying unit 512 includes a silent detection conveying bracket 5121, two silent detection conveying chains 5122, a silent detection conveying motor 5123, and several silent detection conveying carrier plates 5124. The silent detection conveying chains 5122 and the silent detection conveying motors 5123 are both mounted on the silent detection conveying bracket 5121. The silent detection conveying motors 5123 are used to drive the silent detection conveying chains 5122 to rotate, and cause the silent detection conveying carrier plates 5124 mounted on the silent detection conveying chains 5122 to move synchronously (a clock spring is mounted on the silent detection conveying carrier plate to complete the loading before detection or the unloading after detection).

[0026] It is worth mentioning that the working process of the noise detection equipment is as follows: Step S1, Automated Continuous Feeding: For the silent detection input module, the double thumb cylinders of the silent detection transmission gripping unit hold the clock spring to be detected and place it on the silent detection conveyor plate. The silent detection conveyor motor drives the silent detection conveyor chain to rotate in a cycle. The silent detection conveyor plate loaded with the clock spring to be detected moves to the gripping position and waits for the silent detection transport module to grip it. Step S2, Product Transfer and Loading: The silent detection multi-axis driver of the silent detection and handling module drives the gripping unit to be detected to move to the gripping position, grips the clock spring and transfers it to the silent detection workbench of the silent detection module; Step S3, Product housing locking and positioning: The first and second silent detection clamping cylinders on the silent detection workbench extend synchronously in opposite directions, clamping the clock spring housing in both directions, locking the housing, leaving only the inner housing rotatable; Step S4, Automatic Assembly and Docking of Tooling: The silent detection transmission block gripping unit grips the silent detection transmission block, moves it to the position of the silent detection motor drive shaft, and inserts and locks the drive end socket in the middle of the transmission block into the motor drive shaft; at the same time, the two mounting posts of the clock spring inner shell are inserted into the silent detection sockets on both sides of the transmission block to complete the torque transmission connection of the motor, transmission block, and clock spring inner shell. Step S5, Simulated Rotation and Noise Acquisition and Judgment: Start the silent detection motor and rotate the inner shell of the clock spring relative to the outer shell according to the preset speed and alternating forward and reverse cycles to replicate the left and right rotation of a car steering wheel; the noise sensor arranged on the side of the workbench collects the noise signal generated by the friction and collision of the clock spring in real time throughout the process, and transmits the noise decibel and waveform data to the host computer in real time; the host computer retrieves the preset noise qualified threshold, compares the collected noise data in real time, automatically determines whether the clock spring is a qualified product or a defective product with abnormal noise, and records the detection data and judgment results; Step S6, Automatic disassembly of tooling: After noise detection and judgment are completed, the silent detection motor stops running; the silent detection transmission block gripping unit clamps the silent detection transmission block and pulls it outward, so that the drive end socket is disengaged from the motor drive shaft and the silent detection sockets on both sides are disengaged from the clock spring inner shell mounting post, thus completing the tooling separation. Step S7: Release the product clamping: The first silent detection clamping cylinder and the second silent detection clamping cylinder retract synchronously, releasing the clamping limit on the clock spring housing; Step S8, Finished Product Transfer and Unloading: After the detection of the silent detection and handling module is completed, the gripping unit grips the clock spring that has been detected on the silent detection workbench and transfers it to the initial output position of the silent detection output module. Step S9, Automatic Material Sorting and Storage: The silent detection conveying unit of the silent detection output module transports the clock springs that have completed the test to the end unloading area; the material sorting robot of the silent detection output module receives the qualified / defective judgment signal transmitted by the host computer, grabs the qualified clock springs to the qualified product storage area, and grabs the clock springs with abnormal noise to the defective product rework area, thus completing the silent detection process of a single product. Step S10, Cyclic Detection: The equipment repeatedly executes steps S1-S9 to complete the automated silent detection of multiple clock springs on the production line. All detection data is synchronously stored in the host computer to achieve product quality traceability.

[0027] It is worth mentioning that the clock spring and other technical features involved in this patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated in detail.

[0028] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A silent detection device for clock spring production, characterized in that, It includes a silence detection input module, a silence detection output module, a silence detection transport module, and a silence detection module, wherein: The silence detection input module is used to sequentially transfer the clock springs to be detected to the grasping position of the silence detection transport module; the silence detection output module is used to sequentially move the detected clock springs from the initial output position to the final output position. The silent detection and handling module includes a silent detection multi-axis driver and a gripping unit to be detected, a gripping unit after detection, and a gripping unit for a silent detection transmission block, all mounted on the output end of the silent detection multi-axis driver. The gripping unit to be detected is used to grip the clock spring at the position to be gripped and place it onto the silent detection table of the silent detection module via the silent detection multi-axis driver. The gripping unit after detection is used to grip the clock spring after detection and place it onto the initial output position of the silent detection output module via the silent detection multi-axis driver. The gripping unit for a silent detection transmission block is used to install the silent detection transmission block onto the silent detection table before detection and to remove the silent detection transmission block from the silent detection table after detection. The noise detection module is used to simulate the rotation of a clock spring and detect noise. It includes a noise detection motor, a noise detection platform, a noise detection transmission block, and a noise sensor. The noise detection motor, in conjunction with the noise detection transmission block, drives the clock spring mounted on the noise detection platform to rotate. The noise sensor is used to detect the noise generated by the clock spring during rotation.

2. The silent detection equipment for clock spring production according to claim 1, characterized in that, Both the silence detection input module and the silence detection output module include a silence detection transmission and capture unit and a silence detection delivery unit, wherein: The silence detection transmission gripping unit includes a first silence detection bracket, a first silence detection horizontal driver, a first silence detection vertical driver, a first silence detection thumb cylinder, and a second silence detection thumb cylinder. The first silence detection horizontal driver is mounted on the first silence detection bracket, the first silence detection vertical driver is mounted on the drive end of the first silence detection horizontal driver, the first silence detection thumb cylinder is mounted on the drive end of the first silence detection vertical driver, and the second silence detection thumb cylinder is mounted on the first silence detection thumb cylinder. Both the first silence detection thumb cylinder and the second silence detection thumb cylinder are used to grip the clock spring. The silent detection conveying unit includes a silent detection conveying bracket, a silent detection conveying chain, a silent detection conveying motor, and several silent detection conveying plates. The silent detection conveying chain and the silent detection conveying motor are both mounted on the silent detection conveying bracket. The silent detection conveying motor is used to drive the silent detection conveying chain to rotate, and to make the silent detection conveying plates mounted on the silent detection conveying chain move synchronously.

3. The silent detection equipment for clock spring production according to claim 2, characterized in that, The silent detection workbench is located on the side of the silent detection motor near the silent detection transport module. The silent detection workbench is equipped with a first silent detection clamping cylinder and a second silent detection clamping cylinder. The clock spring to be detected is gripped by the detection gripping unit and placed between the first silent detection clamping cylinder and the second silent detection clamping cylinder by the silent detection multi-axis driver, and the outer shell of the clock spring is clamped by the two cylinders facing each other.

4. The silent detection equipment for clock spring production according to claim 3, characterized in that, The drive end of the silent detection motor passes through both the silent detection platform and the clock spring. During detection, the silent detection transmission block is gripped by the silent detection transmission block gripping unit and fixed to the drive end of the silent detection motor via a silent detection multi-axis driver. The silent detection transmission block has silent detection holes at both ends, and the two mounting posts of the clock spring's inner shell are respectively inserted into these holes. This ensures the silent detection transmission block is securely mounted between the drive end of the silent detection motor and the inner shell of the clock spring. When the silent detection motor rotates, the silent detection transmission block synchronously drives the inner shell of the clock spring to rotate, simulating the clock spring's rotation. Simultaneously, a noise sensor located on one side of the clock spring performs detection. After detection, the silent detection transmission block is gripped by the silent detection transmission block gripping unit and pulled out via the silent detection multi-axis driver, detaching from the drive end of the silent detection motor and the mounting posts of the clock spring's inner shell.

5. The silent detection equipment for clock spring production according to claim 4, characterized in that, The middle part of the noise detection transmission block is provided with a drive end socket, which is located between two noise detection sockets and is used to plug and lock with the drive end of the noise detection motor.

6. A silent detection device for clock spring production according to any one of claims 1-5, characterized in that, The working process of the noise detection equipment is as follows: Step S1, Automated Continuous Feeding: For the silent detection input module, the double thumb cylinders of the silent detection transmission gripping unit hold the clock spring to be detected and place it on the silent detection conveyor plate. The silent detection conveyor motor drives the silent detection conveyor chain to rotate in a cycle. The silent detection conveyor plate loaded with the clock spring to be detected moves to the gripping position and waits for the silent detection transport module to grip it. Step S2, Product Transfer and Loading: The silent detection multi-axis driver of the silent detection and handling module drives the gripping unit to be detected to move to the gripping position, grips the clock spring and transfers it to the silent detection workbench of the silent detection module; Step S3, Product housing locking and positioning: The first and second silent detection clamping cylinders on the silent detection workbench extend synchronously in opposite directions, clamping the clock spring housing in both directions, locking the housing, leaving only the inner housing rotatable; Step S4, Automatic Assembly and Docking of Tooling: The silent detection transmission block gripping unit grips the silent detection transmission block, moves it to the position of the silent detection motor drive shaft, and inserts and locks the drive end socket in the middle of the transmission block into the motor drive shaft; at the same time, the two mounting posts of the clock spring inner shell are inserted into the silent detection sockets on both sides of the transmission block to complete the torque transmission connection of the motor, transmission block, and clock spring inner shell. Step S5, Simulated Working Condition Rotation and Noise Acquisition and Judgment: Start the silent detection motor, and drive the inner shell of the clock spring to rotate relative to the outer shell according to the preset speed and alternating forward and reverse cycles, replicating the working condition of the car steering wheel turning left and right; The noise sensor located on the side of the workbench collects the noise signal generated by the friction and collision of the clock spring in real time throughout the process, and transmits the noise decibel and waveform data to the host computer in real time; the host computer retrieves the preset noise qualified threshold, compares the collected noise data in real time, automatically determines whether the clock spring is a qualified product or a defective product with abnormal noise, and records the test data and judgment results. Step S6, Automatic disassembly of tooling: After noise detection and judgment are completed, the silent detection motor stops running; the silent detection transmission block gripping unit clamps the silent detection transmission block and pulls it outward, so that the drive end socket is disengaged from the motor drive shaft and the silent detection sockets on both sides are disengaged from the clock spring inner shell mounting post, thus completing the tooling separation. Step S7: Release the product clamping: The first silent detection clamping cylinder and the second silent detection clamping cylinder retract synchronously, releasing the clamping limit on the clock spring housing; Step S8, Finished Product Transfer and Unloading: After the detection of the silent detection and handling module is completed, the gripping unit grips the clock spring that has been detected on the silent detection workbench and transfers it to the initial output position of the silent detection output module. Step S9, Automatic Material Sorting and Storage: The silent detection conveying unit of the silent detection output module transports the clock springs that have completed the test to the end unloading area; the material sorting robot of the silent detection output module receives the qualified / defective judgment signal transmitted by the host computer, grabs the qualified clock springs to the qualified product storage area, and grabs the clock springs with abnormal noise to the defective product rework area, thus completing the silent detection process of a single product. Step S10, Cyclic Detection: The equipment repeatedly executes steps S1-S9 to complete the automated silent detection of multiple clock springs on the production line. All detection data is synchronously stored in the host computer to achieve product quality traceability.

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