A fully automated intelligent noise detection system for micro motors based on synchronous testing.

Abstract

This invention discloses a fully automated intelligent noise detection system for micro motors based on synchronous testing, comprising a feeding module, a handling module, a conveying pitch-changing module, an unloading and loading / unloading transport module, a silent test chamber module, an output module, and a silent chamber. The feeding module transports the motors to be tested; the handling module synchronously picks up multiple motors and performs the first pitch change; the conveying pitch-changing module performs a second pitch change, transporting the motors to the feeding station at predetermined intervals; the unloading and loading transport module synchronously picks up multiple motors and transfers them to the silent test chamber module for testing, while simultaneously removing the tested motors; the silent test chamber module provides a silent testing environment and performs power supply and noise detection; the output module is used for classifying and outputting good and defective products. This invention significantly improves testing efficiency through multi-station synchronous testing and automatic pitch-changing transport; the use of a multi-layer composite sound insulation structure and vibration reduction design effectively reduces environmental noise and vibration interference, ensuring testing accuracy.

Description

Technical Field

[0001] This invention relates to the field of automated testing equipment technology, and in particular to a fully automated intelligent detection system for micro motor noise based on synchronous testing. Background Technology

[0002] In the production of micro motors, detecting their operating noise is a crucial step in ensuring product quality. Traditional noise detection methods often employ manual or semi-automatic approaches, where a worker or simple robotic arm places a motor into a soundproof box, starts the test, records the data, and then removes it. This method has the following drawbacks: Inefficient: Testing is done one by one at a single workstation, resulting in long cycle times, which makes it difficult to meet the needs of large-scale production.

[0003] Low level of automation: Loading, unloading, handling, testing and other processes require a lot of manual intervention, resulting in high labor costs and human error.

[0004] Limited sound insulation effect: Most existing sound insulation equipment is a single-layer sound insulation structure, which is easily affected by external environmental noise and vibration of adjacent equipment, affecting the accuracy of test data.

[0005] To address these issues, a fully automated intelligent testing system is proposed that enables simultaneous testing at multiple workstations, high-precision automatic handling, and excellent sound insulation. Summary of the Invention

[0006] This invention provides a fully automated intelligent noise detection system for micro motors based on synchronous testing, aiming to solve the problems of low efficiency, insufficient automation, and poor sound insulation in existing micro motor noise detection processes.

[0007] To achieve the above objectives, the fully automatic intelligent noise detection system for micro motors based on synchronous testing adopted in this invention includes: a feeding module, a conveyor pitch-changing module, a material handling module, a soundproof box testing module, an output module, a loading / unloading material handling module, and a soundproof room. The feeding module, conveyor pitch-changing module, material handling module, soundproof box testing module, output module, and loading / unloading material handling module are all installed inside the soundproof room. The unloading module is used to transport the motors to be tested; the handling module is used to simultaneously grab multiple motors from the unloading module, perform a first pitch change, and transfer them to the conveying pitch-changing module; the conveying pitch-changing module is used to receive the motors transferred by the handling module, perform a second pitch change, and transport multiple motors to each loading station at a predetermined interval; the loading and unloading handling module is used to simultaneously grab the motors from the conveying pitch-changing module and transfer them to the silent box testing module for testing, while simultaneously removing the tested motors; the silent box testing module is used to provide a silent testing environment for the motors and to power and detect noise in the motors; the output module is used to classify and output the tested good motors and defective motors.

[0008] Furthermore, the unloading module includes an unloading conveyor motor, an unloading belt, an loading belt, a material placement tray, a side pushing assembly, and a connecting pushing assembly. The unloading belt and the loading belt are arranged parallel to each other and rotate in opposite directions. The material placement tray carries the motor. The side pushing assembly moves the material placement tray laterally at the ends of the unloading and loading belts. The connecting pushing assembly pushes the material placement tray onto the loading belt. The entire unloading module enables the material placement tray to rotate repeatedly in a cyclical manner.

[0009] Furthermore, the material handling module includes a horizontal material handling cylinder, a material handling guide rail, a vertical material handling cylinder, a variable pitch cylinder, a variable pitch slider, plugs, a gripper cylinder, and grippers; the vertical material handling cylinder and the gripper cylinder are mounted on the slider seat; the horizontal material handling cylinder drives the slider seat to move horizontally along the material handling guide rail; the vertical material handling cylinder drives the gripper cylinder and the variable pitch cylinder to move up and down; the variable pitch cylinder drives the four variable pitch sliders to move at equal intervals; the gripper cylinder is fixedly mounted on the variable pitch slider; the variable pitch sliders are connected by plugs of equal length to achieve synchronous equidistant expansion or contraction.

[0010] Furthermore, the conveying pitch-changing module includes a conveying pitch-changing motor, a conveying pitch-changing synchronous belt, a conveying pitch-changing guide rail, a pitch-changing connecting block, a pitch-changing tooling fixture, and a pitch-changing positioning block. The conveying pitch-changing motor drives the conveying pitch-changing synchronous belt to move the pitch-changing connecting block and the pitch-changing tooling fixture along the conveying pitch-changing guide rail. The sides of the multiple pitch-changing tooling fixtures are respectively provided with positioning strips of different lengths, and the pitch-changing positioning blocks are correspondingly set at different positions on the conveying pitch-changing guide rail. Through the cooperation of the positioning strips and the pitch-changing positioning blocks, the multiple pitch-changing tooling fixtures are stopped sequentially at predetermined work positions.

[0011] Furthermore, the loading and unloading transport module includes a horizontal loading and unloading transport guide rail, a horizontal loading and unloading transport drive mechanism, a vertical loading and unloading transport guide rail, a vertical loading and unloading transport drive mechanism, a gripping cylinder for vertical movement, and a loading and unloading gripper assembly. Two loading and unloading gripper assemblies are provided, and their relative movement is driven by the horizontal cylinder. During operation, one loading and unloading gripper assembly is used to grip the motor that has completed testing in the silent chamber test module, and the other loading and unloading gripper assembly is used to place the motor to be tested into the silent chamber test module.

[0012] Furthermore, the silent chamber testing module includes a chamber body, a noise detection module, sound insulation cotton, an in-and-out chamber cylinder, a silent door panel, a motor fixture, a probe assembly, and a probe driving cylinder; the in-and-out chamber cylinder drives the silent door panel and the motor fixture mounted thereon to enter and exit the chamber body; the motor fixture is mounted on a rubber shock-absorbing column; the probe driving cylinder drives the probe assembly to contact the circuit of the motor under test and supply power; the chamber body is a multi-layer composite structure, including at least three layers of stainless steel plates and at least three layers of sound insulation cotton, and gaps are provided between each layer to achieve effective noise reduction and improve the test effect.

[0013] Furthermore, the side wall of the soundproof room is provided with an opening for materials to pass through. The track of the feeding module passes through the opening, and an inner track noise reduction component and an outer track noise reduction component are respectively wrapped on the inner and outer sides of the opening. The inner track noise reduction component and the outer track noise reduction component are multi-layer composite sound insulation structures to further reduce noise.

[0014] Furthermore, the output module includes a good product output module and a defective product box; the good product output module includes an output conveyor belt, an output motor, a guide plate, a tilting frame, and an output noise reduction component; the guide plate is located on both sides of the output conveyor belt, and the tilting frame is located above the output conveyor belt for tilting the upright motor; the output noise reduction component is wrapped around the output conveyor belt and the guide plate to reduce external noise.

[0015] Furthermore, the bottom of the silent test module is equipped with a shock-absorbing pad.

[0016] Furthermore, the driving mechanism of the material handling module, the conveying pitch module, and the loading and unloading conveying module is a cylinder or a servo motor.

[0017] Compared with existing technologies, the fully automated intelligent noise detection system for micro motors based on synchronous testing provided by this invention achieves full automation of the entire process of micro motors from feeding, handling, pitch changing, testing to classification output through multi-module collaborative operation, significantly improving detection efficiency. The system employs a multi-level sound insulation structure and vibration reduction design to effectively reduce the interference of external environmental noise and equipment vibration on test results, improving the accuracy and consistency of noise detection. The system has a compact overall structure and stable operation, making it suitable for noise detection in large-scale micro motor production lines. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall schematic diagram provided for an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of a noise-free room provided in an embodiment of the present invention; Figure 4 An exploded view diagram provided for an embodiment of the present invention; Figure 5 This is a schematic diagram of the material feeding module structure provided in an embodiment of the present invention; Figure 6 This is an exploded view of the material feeding module provided in an embodiment of the present invention; Figure 7 , 8 This is a schematic diagram of the operation of the feeding module provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the conveying pitch module structure provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the operation of the conveying pitch module provided in an embodiment of the present invention; Figure 11 This is a partially enlarged schematic diagram of the conveying pitch module provided in an embodiment of the present invention; Figure 12 , 13 14 is a schematic diagram of the material handling module structure provided in an embodiment of the present invention; Figure 15 This is a schematic diagram of the material handling module provided in an embodiment of the present invention; Figure 16 This is a schematic diagram of the structure of the silent box test module provided in an embodiment of the present invention; Figure 17 This is a schematic cross-sectional view of the soundproof box testing module provided in an embodiment of the present invention; Figure 18 This is a magnified schematic diagram of part A provided in an embodiment of the present invention; Figure 19 This is a schematic diagram of the output module structure provided in an embodiment of the present invention; Figure 20 , 21 This is a schematic diagram of the loading and unloading material handling module provided in an embodiment of the present invention.

[0020] The following are the labeling elements in the figure: 1. Feeding module; 11. Outer track noise reduction assembly; 111. Motor noise reduction cover; 12. Inner track noise reduction assembly; 13. Feeding conveyor motor; 14. Feeding belt; 15. Feeding belt; 16. Material placement tray; 17. Side pushing assembly; 18. Connecting pushing assembly; 2. Conveyor pitch control module; 21. Conveyor pitch control motor; 22. Conveyor pitch control synchronous belt; 23. Conveyor pitch control guide rail; 24. Pitch control link block; 25. Pitch control tooling fixture; 251. Positioning bar; 26. Pitch control positioning block; 3. Material handling module; 31. Horizontal material handling cylinder; 32. Material handling guide rail; 33. Vertical material handling cylinder; 34. Pitch variable cylinder; 341. Pitch variable slider; 342. Plug; 35. Gripper cylinder; 36. Gripper; 4. Silent enclosure test module; 41. Enclosure body; 411. Vibration damping pad; 42. Noise detection module; 43. Sound insulation cotton; 44. Entry / exit cylinder; 45. Silent door panel; 46. Motor fixture; 47. Rubber vibration damping column; 48. Probe assembly; 49. Probe drive cylinder; 5. Output module; 51. Good product output module; 511. Output conveyor belt; 512. Output motor; 513. Guide plate; 514. Tilting frame; 52. Defective product box; 53. Output noise reduction component; 6. Loading and unloading conveying module; 61. Loading and unloading conveying horizontal guide rail; 62. Loading and unloading conveying horizontal drive mechanism; 63. Loading and unloading conveying vertical guide rail; 64. Loading and unloading vertical conveying drive mechanism; 65. Gripping and moving cylinder; 66. Loading and unloading gripper assembly; 7. Motor; 8. Soundproof room; 81. Camera; 9. Sensor; 91. Table; 92. Electrical cabinet.

[0021] The accompanying drawings have illustrated specific embodiments of the invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the fully automated intelligent detection system for micro motor noise based on synchronous testing provided in this embodiment is installed inside a soundproof room 8. The soundproof room 8 is a closed, soundproof space used to isolate external environmental noise. The soundproof room 8 contains a feeding module 1, a conveyor pitch-changing module 2, a material handling module 3, a soundproof box testing module 4, an output module 5, and a loading / unloading transport module 6. These modules work together to form a complete automated testing line. The conveyor pitch-changing module 2, material handling module 3, output module 5, and loading / unloading transport module 6 are fixed to a table 91. An electrical cabinet 92 is located below the table 91 and provides power and control signals to each actuator.

[0025] like Figures 5 to 8 As shown, the unloading module 1 is used to transport the motor 7 to be tested to a designated position for subsequent gripping. The unloading module 1 includes an unloading conveyor motor 13, an unloading belt 14, an loading belt 15, a material placement tray 16, a side pushing component 17, and a connecting pushing component 18. The unloading belt 14 and the loading belt 15 are arranged in parallel and rotate in opposite directions. The material placement tray 16 is placed on the belt, and each material placement tray 16 can carry four motors 7. During operation, the operator places the motor 7 to be tested on the material placement tray 16. The material placement tray 16 carrying the motor 7 moves to the right end with the unloading belt 14. Then, the side pushing component 17 pushes it forward, and then the connecting pushing component 18 pushes it onto the loading belt 15. The loading belt 15 transports the material placement tray 16 to the gripping position at the left end for the material handling module 3 to grip. After the material is grasped, the empty material placement tray 16 is pushed back to the feeding belt 14 by the side pusher component 17 at the left end, realizing the recycling of the material tray. Several sensors 9 are installed on the entire feeding module 1 to detect the position and presence of the motor 7 and to count them.

[0026] like Figures 12 to 15 As shown, the material handling module 3 is used to synchronously grip multiple motors 7 on the unloading module 1 and perform the first pitch change after gripping. The material handling module 3 includes a horizontal material handling cylinder 31, a material handling guide rail 32, a vertical material handling cylinder 33, a pitch-changing cylinder 34, a pitch-changing slider 341, a plug 342, a gripper cylinder 35, and a gripper 36. The vertical material handling cylinder 33 and the gripper cylinder 35 are mounted on the slider seat. The horizontal material handling cylinder 31 drives the slider seat to move horizontally along the material handling guide rail 32, while the vertical material handling cylinder 33 drives the gripper cylinder 35 and the pitch-changing cylinder 34 to move up and down. The pitch-changing cylinder 34 drives the four pitch-changing sliders 341 to move at equal intervals. The gripper cylinder 35 is fixedly mounted on the pitch-changing sliders 341. The pitch-changing sliders 341 are connected by plugs 342 of equal length, thereby achieving synchronous and equidistant expansion or contraction. The first pitch change typically changes the distance between the motors 7 from 2mm to 30mm. In some embodiments, if the spacing between the motors 7 in the material placement tray 16 is long enough, the variable pitch module in the material handling module 3 can be removed.

[0027] In actual operation, since the motors 7 on the unloading module 1 are arranged relatively closely in the material placement tray 16, the pitch-changing cylinder 34 first drives the pitch-changing slider 341 to abut against each other, so that the four grippers 36 move closer to each other to synchronously grab the four motors 7 with small spacing. After grabbing, the pitch-changing cylinder 34 then drives the pitch-changing slider 341 to synchronously expand the four grippers 36 to the preset spacing through the equidistant limiting action of the plug 342, completing the first pitch change. Subsequently, the horizontal material handling cylinder 31 and the vertical material handling cylinder 33 cooperate to transfer the four motors 7 to the conveying pitch-changing module 2.

[0028] like Figures 9 to 11 As shown, the conveyor pitch-changing module 2 is used to receive the motors 7 transferred by the material handling module 3 and perform a second pitch change. After the pitch change, the distance between the motors 7 is usually about 750mm. The four motors 7 are conveyed to each loading station at a predetermined interval. The conveyor pitch-changing module 2 includes a conveyor pitch-changing motor 21, a conveyor pitch-changing synchronous belt 22, a conveyor pitch-changing guide rail 23, a pitch-changing connecting block 24, a pitch-changing tooling fixture 25, and a pitch-changing positioning block 26. The conveyor pitch-changing motor 21 drives the conveyor pitch-changing synchronous belt 22, which in turn moves the pitch-changing connecting block 24 and the pitch-changing tooling fixture 25 along the conveyor pitch-changing guide rail 23. The four pitch-changing tooling fixtures 25 are respectively provided with positioning bars 251 of different lengths on their sides, and the pitch-changing positioning blocks 26 are correspondingly set at different positions on the conveyor pitch-changing guide rail 23.

[0029] When the material handling module 3 places the four motors 7 on the variable pitch fixture 25, the spacing between each fixture is consistent with the spacing after the material handling module 3 is unfolded. Subsequently, the variable pitch motor 21 drives the synchronous belt to move, causing the four variable pitch fixtures 25 to move forward in sequence. Since the positioning bar 251 of the rightmost variable pitch fixture 25 is the shortest, it can bypass the front variable pitch positioning block 26 and move directly to the rightmost end; the positioning bar 251 of the second variable pitch fixture 25 is blocked by the corresponding variable pitch positioning block 26 and stops at the preset position; the third variable pitch fixture 25 is also blocked by the corresponding variable pitch positioning block 26, and so on, until finally the four variable pitch fixtures 25 stop at the loading stations corresponding to the four silent box test modules 4, completing the second pitch change.

[0030] like Figure 20 and Figure 21 As shown, the loading / unloading conveying module 6 is used to grab the motor 7 on the conveying pitch-changing module 2 and transfer it to the silent box testing module 4 for testing. The motor 7 is then removed after testing. The loading / unloading conveying module 6 includes a horizontal loading / unloading guide rail 61, a horizontal loading / unloading drive mechanism 62, a vertical loading / unloading guide rail 63, a vertical loading / unloading drive mechanism 64, a gripping vertical movement cylinder 65, and loading / unloading gripper assemblies 66. In this embodiment, two loading / unloading gripper assemblies 66 are provided, which can move relative to each other driven by the horizontal cylinder.

[0031] In the specific operation, the loading / unloading gripper assembly 66 first moves above the conveying pitch-changing module 2, gripping the four motors 7 to be tested on the pitch-changing tooling fixtures 25. Then, the gripping vertical movement cylinder 65 drives the gripper assembly to move up and down slightly, while the loading / unloading vertical transport drive mechanism 64 drives the entire gripping part to move up and down significantly to cross the height of the silent door panel 45. Then, the loading / unloading horizontal transport drive mechanism 62 synchronously moves the four motors 7 to the motor fixture 46 above the silent box test module 4. At this time, one loading / unloading gripper assembly 66 removes the motor 7 that has completed the test, while the other loading / unloading gripper assembly 66 puts the motor 7 to be tested into the motor fixture 46, realizing rapid loading and unloading and improving cycle efficiency.

[0032] like Figures 16 to 18As shown, the silent test chamber module 4 provides a silent testing environment for the motor 7 and performs power supply and noise detection. The silent test chamber module 4 includes a chamber 41, a noise detection module 42, sound insulation cotton 43, an in-and-out chamber cylinder 44, a silent door panel 45, a motor fixture 46, a probe assembly 48, and a probe drive cylinder 49. The motor fixture 46 is mounted on a rubber shock-absorbing column 47, effectively isolating external vibrations. The in-and-out chamber cylinder 44 drives the silent door panel 45 and the motor fixture 46 mounted thereon to move in and out of the chamber 41. When the motor 7 is placed in the motor fixture 46, the in-and-out chamber cylinder 44 pushes it into the chamber 41. Subsequently, the probe drive cylinder 49 drives the probe assembly 48 to contact the circuit of the motor 7 under test and supply power. The noise detection module 42 collects noise data of the motor in real time.

[0033] To achieve better sound insulation, the enclosure 41 adopts a multi-layer composite structure, specifically including at least three layers of stainless steel plates and at least three layers of sound insulation cotton 43. A certain gap is left between each layer, allowing sound to undergo multiple reflections and attenuation during propagation, thereby effectively reducing the interference of external noise on the test results. Simultaneously, a shock-absorbing pad 411 is also installed at the bottom of the enclosure 41 to further reduce the transmission of low-frequency vibrations from the equipment foundation.

[0034] After the test is completed, the in-and-out cylinder 44 pushes the silent door panel 45 and the motor fixture 46 out of the housing 41. The loading and unloading conveying module 6 then removes the tested motor 7 and classifies it according to the test results. Figure 19 As shown, output module 5 includes a good product output module 51 and a defective product box 52. Good product output module 51 includes an output conveyor belt 511, an output motor 512, a guide plate 513, a tilting frame 514, and an output noise reduction component 53. The guide plate 513 is located on both sides of the output conveyor belt 511, and the tilting frame 514 is located above the output conveyor belt 511, used to tilt the upright motor 7 for easy subsequent packaging. The output noise reduction component 53 wraps around the output conveyor belt 511 and the guide plate 513 to reduce noise generated during the motor's descent and conveying process. Defective motors 7 are directly placed into the defective product box 52 by the loading / unloading handling module 6 for centralized collection.

[0035] In addition, in order to further reduce the impact of external environmental noise on the testing process, the side wall of the soundproof room 8 is provided with an opening for materials to pass through. The track of the unloading module 1 passes through the opening, and the inner track noise reduction component 12 and the outer track noise reduction component 11 are respectively wrapped on the inner and outer sides of the opening. Both are multi-layer composite sound insulation structures, which can effectively block the transmission of noise generated when materials enter and exit.

[0036] In actual operation, the entire system is first started and can be controlled via an external computer or remote control. A camera 81 is installed in the soundproof room 8 to monitor the operation process in real time. The operator places the motor 7 to be tested into the material placement tray 16 of the unloading module 1. In this embodiment, each material placement tray 16 can carry four motors 7. The unloading conveyor motor 13 drives the unloading belt 14 to transport the material placement tray 16 containing the motors to the end. The side pushing component 17 and the connecting pushing component 18 act sequentially to transfer the material placement tray 16 to the loading belt 15 and then to the gripping position of the material handling module 3.

[0037] The material handling module 3 is activated, and the pitch-changing cylinder 34 drives the four pitch-changing sliders 341 to abut against each other, bringing the four grippers 36 to their minimum spacing. The vertical material handling cylinder 33 descends, and the gripper cylinder 35 drives the grippers 36 to grasp the four closely arranged motors 7. After grasping, the vertical material handling cylinder 33 rises, and the pitch-changing cylinder 34 actuates, driving the four pitch-changing sliders 341 to synchronously expand to the preset spacing through the equally long plugs 342, completing the first pitch change. Subsequently, the horizontal material handling cylinder 31 drives the slider seat to move along the material handling guide rail 32, transferring the four motors 7 to the pitch-changing tooling fixture 25 of the conveying pitch-changing module 2.

[0038] After receiving the motor 7, the conveyor pitch module 2 starts the conveyor pitch motor 21, which drives the conveyor pitch synchronous belt 22 to move the four pitch-changing tooling fixtures 25 along the conveyor pitch guide rail 23. Since the lengths of the side positioning strips 251 of each pitch-changing tooling fixture 25 are different, they cooperate with the pitch-changing positioning blocks 26 at the corresponding positions in sequence, so that the four pitch-changing tooling fixtures 25 stop one by one at their respective loading stations, completing the second pitch change. At this time, the four motors 7 are respectively located in front of the feeding of the four silent box test modules 4.

[0039] The loading / unloading transport module 6 then operates. The horizontal drive mechanism 62 moves the two loading / unloading gripper assemblies 66 above the conveying pitch conversion module 2. The gripping vertical movement cylinder 65 cooperates with the vertical transport drive mechanism 64 to lower the gripper assemblies and grip the four motors 7 to be tested. At the same time, another set of gripper assemblies removes the motors 7 that have completed the test from the silent test box module 4, achieving synchronous loading and unloading. After gripping, the horizontal drive mechanism 62 synchronously moves the two sets of motors 7 to the corresponding positions in the silent test box module 4, placing the motors 7 to be tested into the motor fixture 46.

[0040] The in-and-out cylinder 44 of the silent chamber test module 4 drives the silent door panel 45 and the motor fixture 46 to retract into the chamber 41. The probe drive cylinder 49 pushes the probe assembly 48 to make contact with the motor 7 circuit and supply power. The motor 7 runs in a silent environment. The noise detection module 42 collects noise data in real time and uploads it to the control system for judgment. After the test is completed, the in-and-out cylinder 44 pushes the motor fixture 46 out of the chamber 41.

[0041] The loading and unloading conveyor module 6 operates again, removing the tested motor 7. The control system determines whether it is a good or bad product based on the test results. Good motors 7 are moved by the loading and unloading gripper assembly 66 to the top of the good product output module 51 and released. The motor 7 falls onto the output conveyor belt 511 and is laid down from its upright position when it passes the tilting frame 514 as it moves with the conveyor belt, and is finally output to the subsequent packaging stage. Defective motors 7 are moved to the top of the defective product box 52 and released for centralized collection.

[0042] In this embodiment, the drive mechanisms of the material handling module 3, the conveying pitch-changing module 2, and the loading / unloading conveying module 6 can be selected from cylinders or servo motors according to actual needs to meet the speed, accuracy, and cost requirements under different working conditions. The entire system completes the entire process from loading, pitch changing, handling, testing to classification output within the soundproof room 8, realizing fully automated operation of micro motor noise detection, which not only improves detection efficiency but also ensures the accuracy and consistency of test data.

[0043] In this embodiment, the entire process from motor 7 loading to output takes 6 seconds, achieving simultaneous testing of 4 motors. Of course, a silent test module 4 can be added to achieve simultaneous testing of multiple motors 7. This invention employs PLC + sensor closed-loop control, realizing full automation of the micro-motor process from loading, handling, pitch change, testing to classification output, significantly improving testing efficiency. It utilizes a multi-layered sound insulation structure and vibration reduction design, achieving sound insulation attenuation ≥30dB and vibration isolation ≥90%, effectively reducing the interference of external environmental noise and equipment vibration on test results, improving the accuracy and consistency of noise detection. The system has a compact overall structure and stable operation, making it suitable for noise detection in large-scale micro-motor production lines.

[0044] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0046] It should be understood that the present invention 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 scope of the invention is limited only by the appended claims.

Claims

1. A full-automatic intelligent detection system for micro motor noise based on synchronous test, characterized in that, The application relates to a motor testing device. The device comprises a blanking module (1), a conveying distance-variable module (2), a material carrying module (3), a mute box testing module (4), an output module (5), an up-and-down material carrying module (6) and a mute room (8). The blanking module (1), the conveying distance-variable module (2), the material carrying module (3), the mute box testing module (4), the output module (5) and the up-and-down material carrying module (6) are all installed in the mute room (8). The blanking module (1) is used for conveying motors (7) to be tested. The material carrying module (3) is used for synchronously grabbing the motors (7) on the blanking module (1) and transferring the motors (7) to the conveying distance-variable module (2). The conveying distance-variable module (2) is used for receiving the motors (7) transferred by the material carrying module (3) and changing the distance between the motors (7) so as to convey the motors (7) to each up-feeding station according to a predetermined distance. The up-and-down material carrying module (6) is used for synchronously grabbing the motors (7) on the conveying distance-variable module (2) and transferring the motors (7) to the mute box testing module (4) for testing, and meanwhile taking out the tested motors (7). The mute box testing module (4) is used for providing a mute testing environment for the motors (7) and supplying power to the motors (7) and detecting the noise of the motors (7). The output module (5) is used for classifying and outputting the tested qualified motors and unqualified motors.

2. The micro motor noise full-automatic intelligent detection system based on synchronous test according to claim 1, characterized in that: The material carrying module (3) comprises a horizontal material carrying cylinder (31), a material carrying guide rail (32), a vertical material carrying cylinder (33), a distance-variable cylinder (34), distance-variable sliders (341), plugs (342), a clamping jaw cylinder (35) and clamping jaws (36). The vertical material carrying cylinder (33) and the clamping jaw cylinder (35) are installed on a slider seat, the horizontal material carrying cylinder (31) drives the slider seat to move horizontally along the material carrying guide rail (32), the vertical material carrying cylinder (33) drives the clamping jaw cylinder (35) and the distance-variable cylinder (34) to move up and down, the distance-variable cylinder (34) drives four distance-variable sliders (341) to move at equal distances, the clamping jaw cylinder (35) is fixedly installed on the distance-variable sliders (341), and the distance-variable sliders (341) are connected through equal-length plugs (342) so as to realize synchronous equal-distance expansion or contraction.

3. The micro motor noise full-automatic intelligent detection system based on synchronous test according to claim 1, characterized in that: The conveying distance-variable module (2) comprises a conveying distance-variable motor (21), a conveying distance-variable synchronous belt (22), a conveying distance-variable guide rail (23), distance-variable linking blocks (24), distance-variable tool clamps (25) and distance-variable positioning blocks (26). The conveying distance-variable motor (21) drives the conveying distance-variable synchronous belt (22) to drive the distance-variable linking blocks (24) and the distance-variable tool clamps (25) to move along the conveying distance-variable guide rail (23). The sides of multiple distance-variable tool clamps (25) are respectively provided with positioning strips (251) with different lengths, the distance-variable positioning blocks (26) are correspondingly arranged at different positions of the conveying distance-variable guide rail (23), and through cooperation of the positioning strips (251) and the distance-variable positioning blocks (26), the multiple distance-variable tool clamps (25) are sequentially stopped at predetermined stations.

4. The micro motor noise full-automatic intelligent detection system based on synchronous test of claim 1, characterized in that: The feeding and discharging carrying module (6) comprises a feeding and discharging carrying horizontal guide rail (61), a feeding and discharging carrying horizontal driving mechanism (62), a feeding and discharging carrying vertical guide rail (63), a feeding and discharging vertical carrying driving mechanism (64), a grabbing up-and-down moving cylinder (65) and a feeding and discharging grabbing claw assembly (66); the feeding and discharging grabbing claw assembly (66) is provided with two, which are driven to move relative to each other by the horizontal cylinder; during operation, one feeding and discharging grabbing claw assembly (66) is used for grabbing the motor (7) which has completed testing in the mute box testing module (4), and the other feeding and discharging grabbing claw assembly (66) is used for putting the motor (7) to be tested into the mute box testing module (4).

5. The micro motor noise full-automatic intelligent detection system based on synchronous test according to claim 1, characterized in that: The mute box testing module (4) comprises a box body (41), a noise detection module (42), sound insulation cotton (43), an in-and-out box cylinder (44), a mute door plate (45), a motor jig (46), a probe assembly (48) and a probe driving cylinder (49); the in-and-out box cylinder (44) drives the mute door plate (45) and the motor jig (46) mounted thereon to enter and exit the box body (41); the motor jig (46) is mounted on a rubber damping column (47); the probe driving cylinder (49) drives the probe assembly (48) to contact and power the circuit of the motor (7) to be tested; the box body (41) is a multi-layer composite structure, comprising at least three layers of stainless steel plate and at least three layers of sound insulation cotton (43), and gaps are provided between each layer.

6. The micro motor noise full-automatic intelligent detection system based on synchronous test according to claim 1, characterized in that: The side wall of the mute room (8) is provided with an opening for material passing through, the track of the discharging module (1) passes through the opening, and the inner track sound reduction assembly (12) and the outer track sound reduction assembly (11) are wrapped on the inner and outer sides of the opening respectively, and the inner track sound reduction assembly (12) and the outer track sound reduction assembly (11) are multi-layer composite sound insulation structures.

7. The micro motor noise full-automatic intelligent detection system based on synchronous test according to claim 1, characterized in that: The output module (5) comprises a good product output module (51) and a defective product box (52); the good product output module (51) comprises an output conveying belt (511), an output motor (512), a guide plate (513), a tilting frame (514) and an output sound reduction assembly (53); the guide plate (513) is located on both sides of the output conveying belt (511), the tilting frame (514) is located above the output conveying belt (511) and is used for laying down the standing motor (7); and the output sound reduction assembly (53) is wrapped outside the output conveying belt (511) and the guide plate (513).

8. The micro motor noise full-automatic intelligent detection system based on synchronous test of claim 5, characterized in that: The bottom of the box body (41) of the mute box testing module (4) is provided with a damping pad (411).

9. The micro motor noise full-automatic intelligent detection system based on synchronous test of claim 1, characterized in that: The blanking module (1) comprises a blanking conveying motor (13), a blanking belt (14), a feeding belt (15), a material placing disc (16), a side pushing assembly (17) and a connecting pushing assembly (18); the blanking belt (14) and the feeding belt (15) are arranged in parallel and the rotating directions thereof are opposite, the material placing disc (16) is used for bearing the motor (7), the side pushing assembly (17) is used for moving the material placing disc (16) transversely at the end of the blanking belt (14) and the feeding belt (15), and the connecting pushing assembly (18) is used for pushing the material placing disc (16) to the feeding belt (15).

10. The full-automatic intelligent detection system for micro motor noise based on synchronous test according to claim 1, characterized in that: The driving mechanisms of the material moving module (3), the conveying distance changing module (2) and the up-and-down material conveying module (6) are air cylinders or servo motors.

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