Earphone charging old working station

By designing an automated headphone charging aging station, the headphone charging aging test is fully automated by using a robotic arm, control unit, and barcode scanning mechanism. This solves the problems of low automation and low separation efficiency in traditional testing, and improves production efficiency and product quality.

CN224122673UActive Publication Date: 2026-04-14DONGGUAN AOPU NEW AUDIO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN AOPU NEW AUDIO TECH CO LTD
Filing Date
2025-03-14
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Traditional headphone charging aging test processes have low automation, require a lot of manual intervention, have unstable test accuracy, poor coordination between processes, and low efficiency in separating qualified and unqualified products, which affects production efficiency and product quality.

Method used

Design an automated headphone charging and aging station that includes an aging chamber, a conveying mechanism, and a control unit. The station achieves fully automated operation through a robotic arm and a control unit. It features a separate non-conforming product conveyor line, uses a five-axis robotic arm and testing fixtures to ensure headphone fixation, a barcode scanning mechanism for identification and data traceability, and a control unit for real-time monitoring of test results.

Benefits of technology

It has achieved fully automated operation of headphone charging aging test, which improves production efficiency and testing accuracy, ensures data accuracy, reduces the risk of manual intervention and mixed packaging, and improves product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of aging test equipment, and particularly discloses an earphone charging aging station, which comprises an aging bin, a conveying mechanism and a control unit, the conveying mechanism comprises a rack, a material supplementing station, a material taking station, a first conveying line and a manipulator, the material supplementing station, the material taking station, the first conveying line and the manipulator are arranged on the rack, earphones on an external assembly line are conveyed to the material supplementing station, the earphones are conveyed to the material taking station through the first conveying line, and the manipulator is used for transferring the earphones on the material taking station to the aging bin; the aging bin is used for carrying out charging aging test on the earphone, the control unit is electrically connected with the aging bin and the manipulator, and the control unit receives a test result of the aging bin and controls the manipulator to convey the earphone to the conveying mechanism. According to the utility model, through the arrangement of the control unit, the full-automatic operation of feeding, testing and shunting of the earphone is realized, the manual intervention is reduced, and the production takt is greatly improved through the efficient cooperation of the conveying mechanism and the manipulator among the working procedures.
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Description

Technical Field

[0001] This utility model relates to the field of aging testing equipment technology, and in particular discloses an earphone charging aging station. Background Technology

[0002] In recent years, with the rapid development of consumer electronics, the headphone market has experienced explosive growth. At the same time, to ensure the safety and reliability of headphones during long-term use, charging aging tests, as a crucial quality assurance step, are receiving increasing attention from manufacturers. During headphone production, charging aging tests simulate long-term charge-discharge cycles to screen out products with substandard battery performance or defects.

[0003] Traditional headphone charging aging testing processes rely primarily on manual operation or semi-automated equipment. These processes suffer from several shortcomings in terms of automation, testing accuracy, data traceability, and handling of defective products. Specifically, automation is insufficient; in existing technologies, many charging aging testing stations still require significant manual intervention during the conveying, handling, and placement of headphones, leading to low production efficiency. Manual operation not only increases production costs but also increases the risk of unstable test data or product damage due to improper handling. Furthermore, in traditional processes, there are gaps in the connection between different processes after the headphones enter the testing stage from the external assembly line, potentially causing confusion or damage during transport. Particularly in the sorting stage after the headphone charging aging test, efficient separation of qualified and defective products is often not achieved, affecting subsequent rework and quality statistics. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an old headphone charging station with a high level of automation, a well-connected process, and easy data traceability.

[0005] To achieve the above objectives, this utility model provides an earphone charging aging station, comprising an aging chamber, a conveying mechanism, and a control unit. The conveying mechanism includes a frame and a replenishment station, a picking station, a first conveyor line, and a robotic arm mounted on the frame. Earphones from an external production line are conveyed to the replenishment station, the first conveyor line conveys the earphones to the picking station, and the robotic arm transfers the earphones from the picking station to the aging chamber. The aging chamber is used to perform charging aging tests on the earphones. The control unit is electrically connected to the aging chamber and the robotic arm. The control unit receives the test results from the aging chamber and controls the robotic arm to convey the earphones to the conveying mechanism. This utility model, by setting up a control unit, achieves fully automated operation of earphones from replenishment to testing to aging, reducing manual intervention. The efficient collaboration between each process through the conveying mechanism and the robotic arm greatly improves the production cycle. The control unit monitors the test results from the aging chamber in real time to ensure the accuracy of the charging aging status data, thereby achieving effective control of product quality.

[0006] Furthermore, the conveying mechanism also includes a second conveyor line mounted on the rack, located to one side of the first conveyor line. This second conveyor line is used to convey defective headphones. By setting up a separate conveyor line for defective products, qualified and unqualified headphones can be effectively distinguished. Dedicated handling of defective products facilitates subsequent rework, repair, or scrapping processes, reduces the risk of mixed packaging, and ensures that only headphones that have passed rigorous testing proceed to the next stage, thereby improving the overall product quality.

[0007] Furthermore, the conveying mechanism also includes a test fixture with multiple mounting slots, in which the external earphone is placed. The test fixture ensures that the earphone remains stationary during testing, reducing testing errors caused by shaking or positional deviation. By setting multiple mounting slots, multiple sets of earphones can be transported and tested at once, improving equipment production efficiency. At the same time, the uniform fixing method facilitates gripping by the robotic arm, improving the accuracy of automated pick-and-place.

[0008] Furthermore, the aging chamber is provided in two sets, located on both sides of the conveying mechanism. The dual aging chambers enable parallel charging aging tests, shortening the overall testing cycle. When one aging chamber is in operation, the other can simultaneously test the next batch of headphones, avoiding bottlenecks at a single workstation. If one set of equipment fails, the other set can still operate normally, ensuring the continuity of the production line.

[0009] Furthermore, the aging chamber includes a cabinet and multiple aging power supply modules. The cabinet contains multiple test stations, with each aging power supply module corresponding to one of the test stations. The earphones are electrically connected to the aging power supply modules via test fixtures. A control unit is electrically connected to the multiple aging power supply modules and is used to detect the charging aging status of the earphones. This multi-test station and power supply module design allows for simultaneous monitoring and testing of multiple earphones, improving the comprehensiveness and efficiency of the testing. Independent power supply modules reduce the risk of the overall power supply system, ensuring stable operation at each test point. The control unit collects and compares data from each station in real time, ensuring accurate judgment of the charging aging status and effectively improving product quality control.

[0010] Furthermore, the conveying mechanism also includes a barcode scanning station and a barcode scanning mechanism mounted on the station. The barcode scanning station is located between the replenishment station and the unloading station. The barcode scanning mechanism includes a support frame and a barcode scanning camera mounted on the support frame. The barcode scanning camera is electrically connected to the control unit. The barcode scanning camera scans and identifies the earphones and transmits the signal to the control unit for processing. The control unit then controls the robotic arm to move the earphones to the aging chamber. The barcode scanning mechanism enables unique identification of each earphone, facilitating subsequent quality traceability and data management. Automatic matching of test data with earphone identification information reduces manual input errors. Timely transmission of barcode information to the control unit guides the robotic arm to accurately deliver the earphones to the corresponding aging chamber, ensuring a smooth process flow.

[0011] Furthermore, the output end of the robotic arm is equipped with an end effector, which includes a base, a drive motor mounted on the base, a first clamping plate, and a second clamping plate disposed on the output shaft of the drive motor. The second clamping plate is slidably connected to the base. The drive motor drives the second clamping plate to approach the first clamping plate, and the first and second clamping plates cooperate to clamp the test fixture. The end effector can accurately grasp the test fixture, ensuring that the earphone is stable and does not shift during the picking and placing process. The clamping plate design is adaptable to test fixtures and earphones of different sizes, improving the applicability of the workstation. The movement of the clamping plate is controlled by the motor to ensure appropriate clamping force, preventing the fixture from slipping and avoiding damage to the product due to excessive clamping.

[0012] Furthermore, the robotic arm is a five-axis robotic arm. The five-axis robotic arm can perform precise movements in multiple planes and angles, meeting the high-precision handling requirements between different workstations. Complex trajectory and path control improve the efficiency of headphone transmission, shorten testing and transmission time, and the five-axis design allows the robotic arm to adapt to operations in various positions within the workstation, ensuring the smooth operation of the entire production line.

[0013] Furthermore, the first and second clamping plates are provided with anti-slip grooves. The anti-slip grooves enhance the friction between the clamping surface and the test fixture, effectively preventing the earphone from slipping during handling and ensuring the stability of the fixture position during clamping, thereby further improving the reliability of the test data.

[0014] Furthermore, the material handling station is equipped with a lifting assembly, which includes a lifting cylinder mounted on the frame and a push plate connected to the output shaft of the lifting cylinder. The lifting cylinder drives the push plate to push the test fixture. By adjusting the test fixture to the optimal gripping height in a timely manner through the lifting assembly, the gripping process of the robotic arm is simplified, the height of the test fixture is automatically adjusted, and the error and damage risk caused by manual operation are reduced. It is applicable to test fixtures of different sizes and shapes, improving the overall adaptability of the workstation.

[0015] The beneficial effects of this utility model are as follows: By setting up a control unit, this utility model realizes the fully automatic operation of the earphone from replenishment to testing to current distribution, reducing manual intervention. The efficient collaboration between each process through the conveying mechanism and the robotic arm greatly improves the production cycle. The control unit monitors the test results of the aging chamber in real time to ensure the accuracy of the charging aging status data, thereby achieving effective control of product quality.

[0016] By setting up a separate non-conforming product conveyor line, it is possible to effectively distinguish between qualified and unqualified headphones. The dedicated line for handling unqualified products is beneficial for subsequent rework, repair or scrapping processes, reduces the risk of mixed packaging, and ensures that only headphones that have passed rigorous testing can enter the next stage, thereby improving the overall product quality level.

[0017] The test fixture ensures that the headphones remain stationary during testing, reducing test errors caused by shaking or positional deviation. By setting multiple mounting slots, multiple sets of headphones can be transported and tested at once, improving equipment production efficiency. At the same time, the uniform fixing method facilitates the gripping of robotic arms, improving the accuracy of automated pick-and-place. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an old chemical plant that can charge headphones according to this utility model;

[0019] Figure 2 This is a schematic diagram of the conveying mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the aging chamber of this utility model;

[0021] Figure 4 for Figure 2 A partial schematic diagram of A in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the robotic arm of this utility model;

[0023] Figure 6 This is a schematic diagram of the conveying mechanism of this utility model from another perspective;

[0024] Figure 7 This is a schematic diagram of the test fixture of this utility model.

[0025] The reference numerals in the figures include:

[0026] 1. Aging chamber; 2. Conveying mechanism; 3. Control unit; 4. Frame; 5. Replenishment station; 6. Unloading station; 7. First conveyor line; 8. Robotic arm; 9. Second conveyor line; 10. Test fixture; 11. Cabinet; 12. Aging power supply module; 13. Test station; 14. Barcode scanning station; 15. Barcode scanning mechanism; 16. Support frame; 17. Barcode camera; 18. End effector; 19. Base; 20. Drive motor; 21. First clamping plate; 22. Second clamping plate; 23. Lifting assembly; 24. Lifting cylinder; 25. Push plate. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] Please see Figures 1 to 7 As shown, this utility model discloses an earphone charging aging station, comprising an aging chamber 1, a conveying mechanism 2, and a control unit 3. The conveying mechanism 2 includes a frame 4 and a replenishment station 5, a picking station 6, a first conveyor line 7, and a robotic arm 8 mounted on the frame 4. Earphones from the external assembly line are conveyed to the replenishment station 5, the first conveyor line 7 conveys the earphones to the picking station 6, and the robotic arm 8 transfers the earphones from the picking station 6 to the aging chamber 1. The aging chamber 1 is used for charging aging tests on the earphones. The control unit 3 is electrically connected to the aging chamber 1 and the robotic arm 8. The control unit 3 receives the test results from the aging chamber 1 and controls the robotic arm 8 to convey the earphones to the conveying mechanism 2. This utility model, by setting up the control unit 3, realizes fully automated operation of earphones from replenishment to testing to aging, reducing manual intervention. The efficient collaboration between each process through the conveying mechanism 2 and the robotic arm 8 greatly improves the production cycle. The control unit 3 monitors the test results of the aging chamber 1 in real time to ensure the accuracy of the charging aging status data, thereby achieving effective control of product quality.

[0029] During production, the headphones on the external assembly line are conveyed to the replenishment station 5. The first conveyor line 7 conveys the headphones to the picking station 6. The robot arm 8 is used to transfer the headphones on the picking station 6 to the aging chamber 1. The aging chamber 1 is used to perform charging aging tests on the headphones. The control unit 3 receives the test results from the aging chamber 1 and controls the robot arm 8 to convey the headphones to the conveying mechanism 2 to complete the charging aging test.

[0030] The flow guiding structure conveying mechanism 2 also includes a second conveyor line 9 mounted on the frame 4. The second conveyor line 9 is located to one side of the first conveyor line 7 and is used to convey defective headphones. By setting up a separate conveyor line for defective products, qualified and unqualified headphones can be effectively distinguished. The dedicated line for handling defective products facilitates subsequent rework, repair, or scrapping processes, reduces the risk of mixed packaging, and ensures that only headphones that have passed rigorous testing enter the next stage, thereby improving the overall product quality level.

[0031] The flow guiding structure conveying mechanism 2 also includes a test fixture 10, which has multiple mounting slots on it. The external earphone is placed in the mounting slot. The test fixture 10 ensures that the earphone remains fixed during the test, reducing test errors caused by shaking or positional deviation. By setting multiple mounting slots, multiple sets of earphones can be transported and tested at one time, improving equipment production efficiency. At the same time, the uniform fixing method facilitates the gripping of the robotic arm 8, improving the accuracy of automated picking and placing.

[0032] The aging chamber 1 of the flow guide structure is provided in two sets, which are located on both sides of the conveying mechanism 2. The dual sets of aging chambers 1 realize parallel charging aging tests, shorten the overall test cycle. When one set of aging chambers 1 is in working condition, the other set can simultaneously test the next batch of headphones, avoiding the bottleneck of a single workstation. If one set of equipment fails, the other set can still maintain normal operation, ensuring the continuity of the production line.

[0033] The aging chamber 1 with a flow-guiding structure includes a cabinet 11 and multiple aging power supply modules 12. Multiple test stations 13 are located within the cabinet 11, with the aging power supply modules 12 correspondingly positioned at each station. The earphones are electrically connected to the aging power supply modules 12 via a test fixture 10. A control unit 3 is electrically connected to the multiple aging power supply modules 12 and is used to detect the charging aging status of the earphones. The design of multiple test stations 13 and power supply modules enables simultaneous monitoring and testing of multiple earphones, improving the comprehensiveness and efficiency of the testing. Independent power supply modules reduce the risk of the overall power supply system, ensuring stable operation at each test point. The control unit 3 collects and compares data from each station in real time, ensuring accurate judgment of the charging aging status and effectively improving product quality control.

[0034] The flow guiding structure conveying mechanism 2 also includes a barcode scanning station 14 and a barcode scanning mechanism 15 set on the barcode scanning station 14. The barcode scanning station 14 is located between the replenishment station 5 and the picking station 6. The barcode scanning mechanism 15 includes a support frame 16 and a barcode scanning camera 17 set on the support frame 16. The barcode scanning camera 17 is electrically connected to the control unit 3. The barcode scanning camera 17 scans and identifies the earphones and transmits the signal to the control unit 3 for processing. The control unit 3 controls the robot arm 8 to move the earphones to the aging chamber 1. The barcode scanning mechanism 15 realizes the unique identification of each earphone, which facilitates subsequent quality traceability and data management. The automatic matching of test data and earphone identification information reduces manual input errors. The barcode information is transmitted to the control unit 3 in a timely manner, guiding the robot arm 8 to accurately deliver the earphones to the corresponding aging chamber 1, ensuring a smooth process flow.

[0035] Specifically, the barcode scanner 17 is provided in multiple sets, and the multiple sets of barcode scanners 17 correspond to multiple sets of mounting slots. When the test fixture 10 moves to the barcode scanning station 14, the multiple sets of cameras start scanning simultaneously, completing the identification of the entire batch of headphones in one go. The single scan time is reduced by more than 75%, which is suitable for high-density production lines.

[0036] The output end of the flow-guiding structure robot 8 is equipped with an end effector 18. The end effector 18 includes a base 19, a drive motor 20 mounted on the base 19, a first clamping plate 21, and a second clamping plate 22 disposed on the output shaft of the drive motor 20. The second clamping plate 22 is slidably connected to the base 19. The drive motor 20 drives the second clamping plate 22 to approach the first clamping plate 21, and the first clamping plate 21 and the second clamping plate 22 cooperate to clamp the test fixture 10. The end effector 18 can accurately grasp the test fixture 10, ensuring that the earphone is stable and does not shift during the picking and placing process. The clamping plate design is adapted to test fixtures 10 and earphones of different sizes, improving the applicability of the workstation. The movement of the clamping plate is controlled by the motor to ensure that the clamping force is appropriate, preventing the fixture from slipping and avoiding damage to the product due to excessive clamping.

[0037] The flow-guiding structure robot 8 is a five-axis robotic arm. This five-axis robotic arm can perform precise movements across multiple planes and angles, meeting the high-precision handling requirements between different workstations. Complex trajectory and path control improve the efficiency of headphone transmission, shortening testing and transmission time. The five-axis design allows robot 8 to adapt to various positions within the workstation, ensuring smooth operation of the entire production line.

[0038] The first clamping plate 21 and the second clamping plate 22 of the flow guiding structure are provided with anti-slip grooves. The anti-slip grooves enhance the friction between the clamping surface and the test fixture 10, effectively preventing the earphone from slipping during the handling process, ensuring the stability of the fixture position during clamping, and further improving the reliability of the test data.

[0039] The material handling station 6 of the flow guide structure is equipped with a lifting assembly 23. The lifting assembly 23 includes a lifting cylinder 24 mounted on the frame 4 and a push plate 25 connected to the output shaft of the lifting cylinder 24. The lifting cylinder 24 drives the push plate 25 to push the test fixture 10. The lifting assembly 23 adjusts the test fixture 10 to the optimal gripping height in a timely manner, simplifying the gripping process of the robot arm 8, automatically adjusting the height of the test fixture 10, reducing the error and damage risk caused by manual operation, and is suitable for test fixtures 10 of different sizes and shapes, thus improving the overall adaptability of the workstation.

[0040] In this embodiment, the external assembly line sequentially delivers the headphones to be tested to the replenishment station 5 of the workstation, ensuring that the headphones are arranged in the prescribed manner and spacing. The headphones are placed into the mounting slot of the test fixture 10. The positioning device in the replenishment station 5 initially fixes the test fixture 10, providing a stable base for subsequent operations. In the barcode scanning station 14 set between the replenishment station 5 and the picking station 6, when the headphones pass through the support frame 16 equipped with a barcode camera 17, the barcode or QR code information of the headphones is automatically read. The scanned information is transmitted to the control unit 3 in real time for product identification, test data correspondence, and subsequent traceability management. After scanning, the headphones are transported from the replenishment station 5 to the picking station 6 via the first conveyor line 7. At the picking station 6, the lifting component 23 adjusts the height of the test fixture 10 to ensure that it is in the optimal position for the robot arm 8 to grasp. After the robot arm 8 is precisely positioned, the end effector 18 is driven by a motor to move the second clamping plate 22 toward the first clamping plate 21, firmly clamping the test fixture 10 where the headphones are located. The robotic arm 8 moves the gripped test fixture 10 to the aging chamber 1. Inside the aging chamber 1, the earphones are placed on the corresponding test station 13 via the test fixture 10 and electrically connected to the aging power supply module 12 to ensure stable charging and aging test conditions. The control unit 3 starts the aging test program. The aging power supply module 12 provides the earphones with the specified charging voltage and current for a preset aging test period, while simultaneously collecting test data in real time. After the test cycle ends, the power supply module in the aging chamber 1 transmits the final charging and aging status data to the control unit 3 to determine whether the earphones meet the quality standards. According to the instructions of the control unit 3, the robotic arm 8 grips the test fixture 10 again and removes it from the aging chamber 1. If the test result is qualified, the earphones will be transported to the next process or finished product warehouse via the first conveyor line 7. If the test result is unqualified, the control unit 3 instructs the robotic arm 8 to transfer the earphones to the second conveyor line 9 set on the frame 4, which is specifically used to transport unqualified products for subsequent rework or scrapping.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An old-style electrical charging station for headphones, characterized in that, The device includes an aging chamber (1), a conveying mechanism (2), and a control unit (3). The conveying mechanism (2) includes a frame (4) and a feeding station (5), a picking station (6), a first conveyor line (7), and a robot (8) set on the frame (4). The headphones on the external assembly line are conveyed to the feeding station (5). The first conveyor line (7) conveys the headphones to the picking station (6). The robot (8) is used to transfer the headphones on the picking station (6) to the aging chamber (1). The aging chamber (1) is used to perform charging aging tests on the headphones. The control unit (3) is electrically connected to the aging chamber (1) and the robot (8). The control unit (3) receives the test results from the aging chamber (1) and controls the robot (8) to convey the headphones to the conveying mechanism (2).

2. The old-style headphone charging station according to claim 1, characterized in that: The transmission mechanism (2) also includes a second transmission line (9) disposed on the frame (4). The second transmission line (9) is located on one side of the first transmission line (7) and is used to transmit defective headphones.

3. The old-style headphone charging station according to claim 1, characterized in that: The transmission mechanism (2) also includes a test fixture (10), which has multiple mounting slots, and the external earphone is placed in the mounting slot.

4. The old-style headphone charging station according to claim 1, characterized in that: The aging chamber (1) is provided in two sets, and the two sets of aging chambers (1) are located on both sides of the conveying mechanism (2).

5. The old-style headphone charging station according to claim 3, characterized in that: The aging chamber (1) includes a cabinet (11) and multiple aging power supply modules (12). Multiple test stations (13) are provided inside the cabinet (11). The aging power supply modules (12) are correspondingly located on the test stations (13). The earphone is electrically connected to the aging power supply modules (12) via a test fixture (10). The control unit (3) is electrically connected to the multiple aging power supply modules (12). The control unit (3) is used to detect the charging aging status of the earphone.

6. The old-style headphone charging station according to claim 1, characterized in that: The conveying mechanism (2) also includes a barcode scanning station (14) and a barcode scanning mechanism (15) set on the barcode scanning station (14). The barcode scanning station (14) is located between the replenishment station (5) and the material picking station (6). The barcode scanning mechanism (15) includes a support frame (16) and a barcode scanning camera (17) set on the support frame (16). The barcode scanning camera (17) is electrically connected to the control unit (3). The barcode scanning camera (17) scans and identifies the earphones and transmits the signal to the control unit (3) for processing. The control unit (3) controls the robot arm (8) to move the earphones to the aging chamber (1).

7. The old-style headphone charging station according to claim 3, characterized in that: The output end of the robotic arm (8) is provided with an end effector (18). The end effector (18) includes a base (19), a drive motor (20) mounted on the base (19), a first clamping plate (21), and a second clamping plate (22) disposed on the output shaft of the drive motor (20). The second clamping plate (22) is slidably connected to the base (19). The drive motor (20) drives the second clamping plate (22) to approach the first clamping plate (21). The first clamping plate (21) and the second clamping plate (22) cooperate to clamp the test fixture (10).

8. The old-style headphone charging station according to claim 7, characterized in that: The robotic arm (8) is a five-axis robotic arm.

9. The old-style headphone charging station according to claim 7, characterized in that: The first clamping plate (21) and the second clamping plate (22) are provided with anti-slip grooves.

10. The old-style headphone charging station according to claim 3, characterized in that: The material handling station (6) is equipped with a lifting assembly (23). The lifting assembly (23) includes a lifting cylinder (24) installed on the frame (4) and a push plate (25) connected to the output shaft of the lifting cylinder (24). The lifting cylinder (24) drives the push plate (25) to push the test fixture (10).