A device for electrical testing of micro-motor

Abstract

The utility model provides a kind of miniature motor electrical test equipment, belong to motor processing equipment technical field.It solves the current each test item by independent equipment time-sharing completion, system integration is low, test process fragmentation and other problems.The utility model includes conveying device for conveying motor and detection device, material removing device sequentially arranged along motor conveying direction;The front end of detection device is equipped with a positioning mechanism, and the positioning mechanism is used to drive motor to rotate around motor center axis, and adjust motor to uniform circumferential angle;Detection device is equipped with a plurality of detection stations, and each detection station is equipped with detection component for testing one or more electrical parameters of motor;Material removing device is connected with each detection station signal, and based on the detection result of each detection station, the motor that does not pass detection is removed.The utility model is characterized in that the multiple performance of motor can be measured, to meet the stringent requirements of modern manufacturing on quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of motor processing equipment, and more particularly to a device for electrical testing of micro motors. Background Technology

[0002] As core driving components in modern precision equipment and consumer electronics, the performance and reliability of micro motors directly determine the quality, lifespan, and user experience of the final product. Therefore, comprehensive, efficient, and precise quality testing before micro motors leave the factory is an indispensable and crucial step in the manufacturing process. Currently, industry-standard factory testing of micro motors typically covers multiple dimensions, including electrical, mechanical, and safety performance, primarily involving the measurement of core parameters such as voltage, current, speed, and insulation resistance.

[0003] In electrical performance testing, the conventional method is to apply a rated operating voltage to the motor and monitor its steady-state operating current in real time. In mechanical performance testing, rotational speed is the core indicator of motor performance; current technologies typically use photoelectric encoders, Hall effect sensors, or back EMF detection methods to obtain the motor's rotational speed. In safety performance testing, insulation testing commonly employs a method of applying a DC or AC high voltage much higher than the operating voltage to check whether the leakage current between the windings and the motor casing (grounding electrode) is within a safe range.

[0004] In summary, while existing micro-motor testing technology systems have been established, each test item is often completed by independent equipment in shifts, resulting in low system integration and fragmented testing processes. This not only leads to large equipment footprints and repetitive hardware costs, but also increases contact errors due to multiple tooling clamping operations. Therefore, the industry urgently needs a highly integrated and automated comprehensive testing device for micro-motors. Utility Model Content

[0005] The main purpose of this invention is to address the aforementioned problems in the existing electrical testing process for micro motors by providing a device that can efficiently measure various performance characteristics of the motor.

[0006] The objective of this utility model can be achieved through the following technical solutions: A device for electrical testing of a micro motor is characterized by comprising a conveying device for transporting the motor and a detection device and a rejection device arranged sequentially along the motor conveying direction; the front end of the detection device is provided with a positioning mechanism, which is used to drive the motor to rotate around the central axis of the motor and adjust the motor to a uniform circumferential angle; the detection device is provided with a plurality of detection stations, each detection station being provided with a detection component for testing one or more electrical parameters of the motor; the rejection device is signal-connected to each detection station and rejects motors that fail the test based on the detection results of each detection station.

[0007] In the aforementioned micro motor electrical testing equipment, the positioning mechanism includes an elastic pin, a first driving component for raising and lowering the elastic pin, and a second driving component for rotating the motor. A positioning hole is provided on the motor. The first driving component drives the elastic pin to rise so that the top of the elastic pin elastically abuts against the motor. The second driving component drives the motor to rotate until the elastic pin is inserted into the positioning hole and restricts the rotation of the second driving component.

[0008] In the aforementioned micro motor electrical testing equipment, the second driving component includes two openable clamping blocks, a first driving component for rotating the clamping blocks, and a second driving component for raising and lowering the clamping blocks. The first driving component is located at the output end of the second driving component, and the clamping blocks are located at the output end of the second driving component. After the second driving component drives the two clamping blocks to descend, they clamp and fix the motor. The first driving component drives the clamping blocks and the motor to rotate.

[0009] In the aforementioned micro motor electrical testing equipment, the testing component includes a testing terminal and a driving component three for vertically raising and lowering the testing terminal. The testing terminal includes two vertically spaced conductive probes. The driving component three drives the two conductive probes to descend and form electrical contact with two terminals on the motor.

[0010] In the aforementioned micro-motor electrical testing equipment, the testing component further includes a positioning element for positioning and fixing the motor. This positioning element includes a guide rod, a positioning block, and a spring. The guide rod is vertically slidably mounted on the positioning block, and the spring is sleeved around the outer periphery of the guide rod to push it downwards. A stop block is fixed to the top of the guide rod to prevent it from detaching from the positioning block. The bottom surface of the guide rod is lower than the bottom surface of the conductive probe. A protrusion is provided on the motor, and a positioning recess is formed at the bottom of the guide rod. The positioning block is fixedly connected to the output end of the driving component. After the guide rod descends, it elastically presses against the motor, and the protrusion is inserted into the positioning recess to form a positioning.

[0011] In the aforementioned micro motor electrical testing equipment, the testing component further includes a mounting plate, which is fixedly connected to the output end of the drive component three. The conductive probe is fixed on the mounting plate by an adjustment block, which can be translated relative to the mounting plate to adjust the position of the conductive probe so that the positions of the two conductive probes correspond to the positions of the two terminals on the motor.

[0012] In the aforementioned micro motor electrical testing equipment, the testing device includes a main board, a second driving component on the positioning mechanism, and driving components on each testing component, all of which are fixed on the main board.

[0013] In the aforementioned micro-motor electrical testing equipment, the conveying device includes a clamping and conveying assembly for clamping the motor and conveying it sequentially through each testing station. It includes two clamping plates, a fourth driving component for opening and closing the two clamping plates, and a fifth driving component for translating the two clamping plates. The two clamping plates are parallel and symmetrically arranged on both sides of the motor. Each clamping plate has an arc-shaped notch on its opposite side. The fourth driving component closes the two clamping plates and clamps the motor through the notches. The fifth driving component keeps the clamped plates in the clamped state and conveys the motor forward to the next testing station. The fourth driving component opens the two clamping plates, and the fifth driving component keeps the two clamping plates in the open state and moves them backward to reset.

[0014] In the aforementioned micro motor electrical testing equipment, the two clamping plates are elastically disposed at the ends of the driving component four. When the two clamping plates are closed, the clamping jaws elastically abut against the motor and clamp the motor.

[0015] In the aforementioned micro motor electrical testing equipment, the conveying device further includes a front conveying component and a rear conveying component. The output end of the front conveying component is connected to the input end of the clamping conveying component for feeding the motor into the testing device. The input end of the rear conveying component is connected to the output end of the clamping conveying component for transferring the qualified motor to the next process.

[0016] In the aforementioned micro-motor electrical testing equipment, the clamping and conveying assembly is further equipped with a waiting station located at the rear end of each testing station. When a defective motor is detected at one of the testing stations, and the motor is moved to the waiting station via the clamping and conveying assembly, a rejection device is used to remove the defective motor from the waiting station. After a qualified motor passes the waiting station, the rejection device stops working, and the qualified motor automatically proceeds to the next process.

[0017] In the aforementioned micro motor electrical testing equipment, the rejection device includes two openable grippers, a drive unit six for driving the grippers to rise and fall, and a drive unit seven for driving the grippers to move horizontally. The drive unit six is ​​located at the output end of the drive unit seven, and the grippers are located at the output end of the drive unit six. After the drive unit six drives the two grippers to descend, it clamps the fixed motor that fails the test. The drive unit seven drives the grippers and the motor to move horizontally, removing the unqualified motor from the conveying path of the conveying device.

[0018] In the aforementioned micro motor electrical testing equipment, the rejection device further includes a collection hopper. The number of collection hoppers is consistent with the number of each testing station. The arrangement order of the collection hoppers is consistent with the arrangement order of the testing stations and corresponds one-to-one. After the gripper descends, it clamps the unqualified motor on the station to be transferred and lifts it back to its original position. The drive unit drives the gripper and the motor to move horizontally until they move to the top of the collection hopper corresponding to the testing station where the unqualified motor was detected. The gripper then opens, allowing the unqualified motor to fall into the corresponding collection hopper.

[0019] In the aforementioned micro-motor electrical testing equipment, the first, second, third, fourth, fifth, and sixth driving components are cylinders. The first driving component is a servo motor. The seventh driving component is a linear module.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The positioning mechanism corrects the motor to a preset posture with a uniform circumferential angle, ensuring that the wiring terminals of each motor achieve precise electrical connection and mechanical alignment with the conductive probes at each subsequent testing station; 2. The testing equipment of this utility model can achieve efficient, accurate and synchronous measurement of multiple properties such as voltage, current, speed and insulation, which greatly improves work efficiency and meets the stringent requirements of modern manufacturing for quality and efficiency. 3. The rejection device can not only remove unqualified motors, but also connect the rejection device to the signals of each detection station. The unqualified motor detected by the detection station will be put into the corresponding collection hopper, thus achieving accurate classification. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the testing equipment of this utility model; Figure 2 This is a schematic diagram of the detection device and the rejection device of this utility model; Figure 3 This is a schematic diagram of the positioning mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the detection component of this utility model; Figure 5 This is a schematic diagram of the structure of the clamping and conveying assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the material rejection device of this utility model; In the diagram, 1. Motor; 2. Elastic pin; 3. Drive component one; 4. Clamping block; 5. First drive component; 6. Second drive component; 7. Drive component three; 8. Conductive probe; 9. Terminal block; 10. Protruding post; 11. Guide rod; 12. Positioning block; 13. Spring; 14. Mounting plate; 15. Adjusting block; 16. Main board; 17. Clamping plate; 18. Drive component four; 19. Drive component five; 20. Bayonet; 21. Front conveyor assembly; 22. Rear conveyor assembly; 23. Gripper; 24. Drive component six; 25. Drive component seven; 26. Collection hopper. Detailed Implementation

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

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides an example of an electrical testing device for a micro motor. In this embodiment, it includes a conveying device for transporting a motor 1, and a detection device and a rejection device arranged sequentially along the conveying direction of the motor 1. The front end of the detection device is provided with a positioning mechanism, which is used to drive the motor 1 to rotate around the central axis of the motor 1 and adjust the motor 1 to a uniform circumferential angle. The detection device is provided with several detection stations, and each detection station is provided with a detection component for testing one or more electrical parameters of the motor 1. The rejection device is signal-connected to each detection station and rejects motors 1 that fail the test based on the detection results of each detection station.

[0024] like Figure 3 As shown, the positioning mechanism includes an elastic pin 2, a first driving component 3 for driving the elastic pin 2 to rise and fall, and a second driving component for driving the motor 1 to rotate. The motor 1 has a positioning hole. The first driving component 3 drives the elastic pin 2 to rise, so that the top of the elastic pin 2 elastically abuts against the motor 1. The second driving component drives the motor 1 to rotate until the elastic pin 2 is inserted into the positioning hole and restricts the rotation of the second driving component. The second driving component includes two openable clamping blocks 4, a first driving component 5 for driving the clamping blocks 4 to rotate, and a second driving component 6 for driving the clamping blocks 4 to rise and fall. The first driving component 5 is located at the output end of the second driving component 6, and the clamping blocks 4 are located at the output end of the second driving component 6. After the second driving component 6 drives the two clamping blocks 4 to descend, they clamp and fix the motor 1. The first driving component 5 drives the clamping blocks 4 and the motor 1 to rotate.

[0025] like Figure 4As shown, the detection assembly includes a detection terminal and a driving component 7 for vertically raising and lowering the detection terminal. The detection terminal includes two vertically spaced conductive probes 8. The driving component 7 drives the two conductive probes 8 to descend and form electrical contact with the two terminals 9 on the motor 1. The detection assembly also includes a positioning component for positioning and fixing the motor 1. It includes a guide rod 11, a positioning block 12, and a spring 13. The guide rod 11 is vertically slidably mounted on the positioning block 12. The spring 13 is sleeved on the outer periphery of the guide rod 11 to push the guide rod 11 down. A stop is fixed at the top of the guide rod 11 to prevent the guide rod 11 from dislodging from the positioning block 12. The bottom surface of the guide rod 11 is lower than the bottom surface of the conductive probes 8. The motor 1 has a protrusion 10. A positioning recess is opened at the bottom of the guide rod 11. The positioning block 12 is fixedly connected to the output end of the driving component 7. After the guide rod 11 descends, it is elastically pressed against the motor 1. The protrusion 10 is inserted into the positioning recess to form a positioning, and then the conductive probes 8 make electrical contact with the terminals 9.

[0026] The detection assembly further includes a mounting plate 14, which is fixedly connected to the output end of the drive component 7. The conductive probe 8 is fixedly mounted on the mounting plate 14 via an adjusting block 15, which can translate relative to the mounting plate 14 to adjust the position of the conductive probe 8 so that the positions of the two conductive probes 8 correspond to the positions of the two terminals 9 on the motor 1. The detection device includes a main board 16, on which the second drive component 6 on the positioning mechanism and the drive component 7 on each detection assembly are fixedly mounted.

[0027] like Figure 5 As shown, the conveying device includes a clamping and conveying assembly for clamping the motor 1 and conveying the motor 1 sequentially through each inspection station. It includes two clamping plates 17, a driving component four 18 for opening and closing the two clamping plates 17, and a driving component five 19 for translating the two clamping plates 17. The two clamping plates 17 are parallel and symmetrically arranged on both sides of the motor 1. Each clamping plate 17 has an arc-shaped latch 20 on its opposite side. The driving component four 18 drives the two clamping plates 17 to close and clamp the motor 1 through the latch 20. The driving component five 19 drives the two clamping plates 17 to maintain the clamped state and convey the motor 1 forward to the next inspection station. The driving component four 18 drives the two clamping plates 17 to open, and the driving component five 19 drives the two clamping plates 17 to maintain the open state and translate backward to reset. The two clamping plates 17 are elastically disposed at the ends of the driving component four 18. When the two clamping plates 17 are closed, the latch 20 elastically abuts against the motor 1 and clamps the motor 1.

[0028] like Figure 1As shown, the conveying device further includes a front conveying component 21 and a rear conveying component 22. The output end of the front conveying component 21 is connected to the input end of the clamping conveying component, and is used to send the motor 1 into the testing device. The input end of the rear conveying component 22 is connected to the output end of the clamping conveying component, and is used to transfer the motor 1 that has passed the test to the next process.

[0029] The clamping and conveying assembly is also equipped with a waiting station, which is located at the rear end of each inspection station. When a defective motor 1 is detected at one of the inspection stations, and the motor 1 is moved to the waiting station via the clamping and conveying assembly, the rejection device removes the defective motor 1 from the waiting station. After a qualified motor 1 passes the waiting station, the rejection device stops working, and the qualified motor 1 automatically enters the next process.

[0030] like Figure 6 As shown, the rejection device includes two openable grippers 23, a drive component six 24 for driving the grippers 23 to rise and fall, and a drive component seven 25 for driving the grippers 23 to move horizontally. The drive component six 24 is located at the output end of the drive component seven 25, and the grippers 23 are located at the output end of the drive component six 24. After the drive component six 24 drives the two grippers 23 to fall, it clamps the fixed motor 1 that fails the inspection. The drive component seven 25 drives the grippers 23 and the motor 1 to move horizontally, removing the unqualified motor 1 from the conveying path of the conveying device. The rejection device also includes a collection hopper 26. The number of collection hoppers 26 is the same as the number of each inspection station. The arrangement order of the collection hoppers 26 is the same as the arrangement order of the inspection stations and corresponds one-to-one. After the gripper 23 descends, it clamps the unqualified motor 1 on the station to be transferred and lifts it back to its original position. The drive component 25 drives the gripper 23 and the motor 1 to move horizontally until they move above the collection hopper 26 corresponding to the inspection station where the unqualified motor 1 was detected. The gripper 23 then opens, allowing the unqualified motor 1 to fall into the corresponding collection hopper 26.

[0031] In this embodiment, drive component 3, drive component 6, drive component 7, drive component 18, drive component 19, and drive component 24 are cylinders. The first drive component 5 is a servo motor 1. The drive component 25 is a linear module.

[0032] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A device for electrical testing of a miniature motor, characterized in that, The device includes a conveying device for transporting the motor (1) and a detection device and a rejection device arranged sequentially along the conveying direction of the motor (1); the front end of the detection device is provided with a positioning mechanism, which is used to drive the motor (1) to rotate around the central axis of the motor (1) and adjust the motor (1) to a uniform circumferential angle; the detection device is provided with several detection stations, and each detection station is provided with a detection component for testing one or more electrical parameters of the motor (1); the rejection device is connected to each detection station by signal and rejects motors (1) that fail the detection based on the detection results of each detection station.

2. The micro motor electrical testing equipment according to claim 1, characterized in that, The positioning mechanism includes an elastic pin (2), a first driving component (3) for driving the elastic pin (2) to rise and fall, and a second driving component for driving the motor (1) to rotate. The motor (1) has a positioning hole. The first driving component (3) drives the elastic pin (2) to rise so that the top of the elastic pin (2) elastically abuts against the motor (1). The second driving component drives the motor (1) to rotate until the elastic pin (2) is inserted into the positioning hole and restricts the rotation of the second driving component.

3. The micro motor electrical testing equipment according to claim 2, characterized in that, The second driving component includes two openable clamping blocks (4), a first driving component (5) that drives the clamping blocks (4) to rotate, and a second driving component (6) that drives the clamping blocks (4) to rise and fall. The first driving component (5) is located at the output end of the second driving component (6), and the clamping blocks (4) are located at the output end of the second driving component (6). The second driving component (6) drives the two clamping blocks (4) to descend and clamp and fix the motor (1). The first driving component (5) drives the clamping blocks (4) and the motor (1) to rotate.

4. The micro motor electrical testing equipment according to claim 1, characterized in that, The detection assembly includes a detection terminal and a drive unit three (7) for driving the detection terminal to move vertically up and down. The detection terminal includes two vertically spaced conductive probes (8). The drive unit three (7) drives the two conductive probes (8) to descend and form electrical contact with two terminals (9) on the motor (1).

5. The micro motor electrical testing equipment according to claim 4, characterized in that, The detection assembly also includes a positioning component for positioning and fixing the motor (1). The positioning component includes a guide rod (11), a positioning block (12), and a spring (13). The guide rod (11) is vertically slidably mounted on the positioning block (12). The spring (13) is sleeved on the outer periphery of the guide rod (11) to push the guide rod (11) down. A stop block is fixed on the top of the guide rod (11) to restrict the guide rod (11) from coming off the positioning block (12). The bottom surface of the guide rod (11) is lower than the bottom surface of the conductive probe (8). A protrusion (10) is provided on the motor (1). A positioning recess is opened at the bottom of the guide rod (11). The positioning block (12) is fixedly connected to the output end of the drive component (7). After the guide rod (11) descends, it is elastically pressed onto the motor (1). The protrusion (10) is inserted into the positioning recess to form a positioning.

6. The micro motor electrical testing equipment according to claim 4, characterized in that, The detection assembly also includes a mounting plate (14), which is fixedly connected to the output end of the drive unit (7). The conductive probe (8) is fixed on the mounting plate (14) by an adjustment block (15). The adjustment block (15) can be translated relative to the mounting plate (14) to adjust the position of the conductive probe (8) so that the positions of the two conductive probes (8) correspond to the positions of the two terminals (9) on the motor (1).

7. The micro motor electrical testing equipment according to claim 1, characterized in that, The conveying device includes a clamping and conveying assembly for clamping the motor (1) and conveying the motor (1) through each detection station in sequence. It includes two clamping plates (17), a driving component four (18) for opening and closing the two clamping plates (17), and a driving component five (19) for translating the two clamping plates (17). The two clamping plates (17) are arranged parallel and symmetrically on both sides of the motor (1). The two clamping plates (17) are provided with arc-shaped slots (20) on the opposite side. The driving component four (18) drives the two clamping plates (17) to close and clamp the motor (1) through the slots (20). The driving component five (19) drives the two clamping plates (17) to maintain the clamped state and convey the motor (1) forward to the next detection station. The driving component four (18) drives the two clamping plates (17) to open, and the driving component five (19) drives the two clamping plates (17) to maintain the open state and translate backward to reset.

8. The micro motor electrical testing device according to claim 7, characterized in that, The clamping and conveying assembly is also provided with a waiting station, which is located at the rear end of each inspection station. When a defective motor (1) is detected at one of the inspection stations, the motor (1) is moved to the waiting station through the clamping and conveying assembly. The rejection device is used to remove the defective motor (1) from the waiting station. After the qualified motor (1) passes the waiting station, the rejection device does not work, and the qualified motor (1) automatically enters the next process.

9. The micro motor electrical testing equipment according to claim 1, characterized in that, The rejection device includes two openable grippers (23), a drive component six (24) for driving the grippers (23) to rise and fall, and a drive component seven (25) for driving the grippers (23) to move horizontally. The drive component six (24) is located at the output end of the drive component seven (25), and the grippers (23) is located at the output end of the drive component six (24). The drive component six (24) drives the two grippers (23) to descend and clamp the unqualified fixed motor (1). The drive component seven (25) drives the grippers (23) and the motor (1) to move horizontally, removing the unqualified motor (1) from the conveying path of the conveying device.

10. A micro motor electrical testing device according to claim 9, characterized in that, The rejecting device also includes a collection hopper (26). The number of collection hoppers (26) is the same as the number of each inspection station. The arrangement order of the collection hoppers (26) is the same as the arrangement order of the inspection stations and corresponds one-to-one. After the gripper (23) descends, it clamps the unqualified motor (1) on the station to be transferred and lifts it back to its original position. The drive component seven (25) drives the gripper (23) and the motor (1) to move horizontally until they move to the top of the collection hopper (26) corresponding to the inspection station where the unqualified motor (1) was detected. The gripper (23) opens and the unqualified motor (1) falls into the corresponding collection hopper (26).

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