A rectangular MT fiber optic connector test fixture

Abstract

The application discloses a rectangular MT optical fiber connector test tool, which is applied to the technical field of optical fiber connector test tools and comprises a bottom plate, a lifting assembly arranged on the bottom plate, a detection assembly arranged on the bottom plate and a tool test system, wherein the lifting assembly is connected with the detection assembly, the detection assembly is controlled to lift or lower through the lifting assembly, the connector is butted, and the quality of the connector is detected by the detection assembly; the detection assembly comprises a lower mounting shell fixed above the bottom plate and an upper mounting shell arranged on the lower mounting shell; a cavity one is formed in the lower mounting shell; a fixing shell one is fixed in the cavity one; fixing grooves one are formed in the two sides of the fixing shell one; first air cylinders are fixed to the inner walls of the two sides of the cavity one; a pressing plate one is fixed to the output end of the first air cylinder; and a lower connector is arranged in the lower fixing shell one; and the test precision can be ensured at all times when the matching degree of the connector is detected.

Description

Technical Field

[0001] This invention applies to the field of optical fiber connector testing fixture technology, and is named a rectangular MT optical fiber connector testing fixture. Background Technology

[0002] A connector, also known as an electronic connector or electrical connector, is a conductor device that bridges two conductors in a circuit, allowing current or signals to flow from one conductor to the other. An electronic connector is a type of electrical system that provides a separable interface for connecting two secondary electronic systems. Simply put, a connector is a component used to complete the electrical connection between circuits or electronic devices; it is the bridge between them. To determine the manufacturing quality of connectors, testing is required during production.

[0003] Connector testing requires the use of connector testing fixtures, but existing testing fixtures cannot accurately determine the concentricity of the guide pins and guide sleeves between connector groups when connectors are mated, thus affecting the accuracy of the test.

[0004] Therefore, it is necessary to provide a rectangular MT fiber optic connector testing fixture that can ensure testing accuracy at all times when testing connector matching. Summary of the Invention

[0005] The purpose of this invention is to provide a testing fixture for rectangular MT fiber optic connectors to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rectangular MT fiber optic connector testing fixture, comprising a base plate, a lifting assembly disposed on the base plate, a detection assembly disposed on the base plate, and a fixture testing system. The lifting assembly is connected to the detection assembly, and the lifting assembly controls the lifting of the detection assembly to mate the connector, so as to facilitate the detection assembly to detect the quality of the connector.

[0007] The detection assembly includes a lower mounting shell fixed above the base plate and an upper mounting shell disposed on the lower mounting shell. The lower mounting shell has a cavity, and a fixing shell is fixed inside the cavity. Fixing grooves are provided on both sides of the fixing shell. A first cylinder is fixed on the inner walls of both sides of the cavity. A pressure plate is fixed at the output end of the first cylinder. A lower connector is placed inside the lower fixing shell.

[0008] The upper mounting shell has a cavity two, and a fixing shell two is fixed inside the cavity two. Fixing groove two is opened on both sides of the fixing shell two, and the fixing groove two penetrates the side of the fixing shell two. The inner walls of both sides of the cavity two are connected to a second cylinder through a linear drive. A pressure plate two is fixed to the output end of the second cylinder. An upper connector is fixed inside the fixing shell two.

[0009] Cameras are fixed around the inner walls of the cavity.

[0010] In one embodiment, a rubber plate is fixed to the side of the pressure plate second near the upper connector;

[0011] A rubber plate is fixed to the side of the pressure plate near the lower connector to increase friction and prevent damage to the exterior of the lower connector.

[0012] In one embodiment, an air duct is fixed around the inside of the cavity two, a nozzle is fixed at the end of the air duct, the top of the air duct extends through the outside of the upper mounting shell, and a first pump body is fixed at the top of the air duct.

[0013] In one embodiment, the lifting assembly includes two sets of fixing rods fixed to a base plate, a connecting plate fixed to the two sets of fixing rods, a third cylinder fixed to the connecting plate, a connecting block fixed to the output end of the third cylinder, a lifting plate fixed to the bottom of the connecting block, the lifting plate being fixedly connected to the upper mounting shell, and the lifting plate being slidably connected to the two sets of fixing rods.

[0014] In one embodiment, limit rods are fixed on both sides of the lower mounting shell, and the limit rods are slidably connected to the lifting plate.

[0015] In one embodiment, the lower connector has several insertion holes, and guide sleeves are fixed on both sides of the lower connector;

[0016] The upper connector is fixed with several optical fibers, each optical fiber being matched with a socket. Guide posts are fixed on both sides of the upper connector, and the guide posts cooperate with guide sleeves.

[0017] In one embodiment, the tooling testing system includes a data acquisition module and an adjustment module. The data acquisition module includes an image receiving submodule and a logic judgment submodule. The image receiving submodule is electrically connected to a camera.

[0018] The adjustment module includes a marking submodule, a telescopic control submodule, and an alarm submodule. The telescopic control submodule is electrically connected to the first cylinder, the third cylinder, the second cylinder, and the linear drive.

[0019] In one embodiment, the tooling testing system includes the following specific operating steps:

[0020] Step 1: Secure the lower connector to the inside of the first mounting housing, and secure the upper connector to the inside of the second mounting housing;

[0021] Step 2: Start the lifting assembly, control the lifting plate and the lower mounting shell to form a test chamber, and then control the upper connector to move downward through the linear drive so that the upper connector and the lower connector are connected.

[0022] Step 3: After connecting the upper connector and the lower connector, use a camera to photograph the mating point of the upper and lower connectors to determine the matching status of the upper and lower connectors, and take different measures according to the matching status;

[0023] Step 4: When the matching degree of the upper and lower connectors is high, multiple insertions and removals are required to further determine the quality of the connector assembly.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention, by setting up a camera and detection components, determines the matching degree of the upper connector and the lower connector, and identifies whether the guide post and the guide sleeve, the optical fiber and the socket are in a concentric state, thus ensuring detection accuracy;

[0025] By setting up a pressure plate and a tooling testing system, if the left and right sides of the upper connector are found to be asymmetrical, it means that the pressure plates on both sides of the upper connector have shifted during multiple rapid insertion and removal processes, resulting in unevenness at the mating point between the upper and lower connectors. This affects the mating situation of the upper and lower connectors during rapid insertion and removal. Therefore, it is necessary to inform the staff to reinstall and adjust the upper connector to improve the testing efficiency. Attached Figure Description

[0026] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the lifting plate of the present invention;

[0030] Figure 3 This is a schematic diagram of the lower mounting shell of the present invention;

[0031] Figure 4 This is a schematic diagram of the pressure plate of the present invention;

[0032] Figure 5 This is a schematic diagram of the second pressure plate of the present invention;

[0033] Figure 6 This is a schematic diagram of the guide sleeve and guide post of the present invention. Figure 1 ;

[0034] Figure 7 This is a schematic diagram of the guide sleeve and guide post of the present invention. Figure 2 ;

[0035] Figure 8 This is the present invention. Figure 1 A magnified view of a portion of region A;

[0036] Figure 9 This is a schematic diagram of the tooling testing system of the present invention;

[0037] In the diagram: 1. Base plate; 2. Lifting plate; 3. Fixing rod; 4. Connecting plate; 5. Third cylinder; 6. Connecting block; 7. Limiting rod; 8. Lower mounting shell; 9. Second cylinder; 10. Pressure plate two; 11. Air duct; 12. Guide column; 13. First cylinder; 14. First pump body; 15. Pressure plate one; 16. Guide sleeve; 17. Optical fiber; 18. Insertion hole; 19. Cavity one; 20. Cavity two; 21. Fixing shell one; 22. Fixing shell two; 23. Fixing groove one; 24. Fixing groove two; 25. Upper mounting shell; 26. Rubber plate one; 27. Rubber plate two; 28. Nozzle; 29. ​​Camera. Detailed Implementation

[0038] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] Please see Figure 1-9 The present invention provides a technical solution: a rectangular MT fiber optic connector testing fixture, comprising a base plate 1, a lifting component disposed on the base plate 1, a detection component disposed on the base plate 1, and a fixture testing system. The lifting component is connected to the detection component, and the lifting component controls the lifting of the detection component to mate the connector, so as to facilitate the detection component to detect the quality of the connector.

[0040] The detection assembly includes a lower mounting shell 8 fixed above the base plate 1 and an upper mounting shell 25 disposed on the lower mounting shell 8. The lower mounting shell 8 has a cavity 19, and a fixing shell 21 is fixed inside the cavity 19. Fixing grooves 23 are provided on both sides of the fixing shell 21. A first cylinder 13 is fixed on the inner walls of both sides of the cavity 19. A pressure plate 15 is fixed at the output end of the first cylinder 13. A lower connector is placed inside the lower fixing shell 21. When the first cylinder 13 is activated, it extends to control the pressure plate 15 to fix the lower connector.

[0041] A rubber plate 26 is fixed to the side of the pressure plate 15 near the lower connector to increase friction and prevent damage to the exterior of the lower connector.

[0042] The upper mounting shell 25 has a cavity 20, and a fixing shell 22 is fixed inside the cavity 20. Fixing grooves 24 are provided on both sides of the fixing shell 22, and the fixing grooves 24 penetrate the sides of the fixing shell 22. The inner walls of both sides of the cavity 20 are connected to a second cylinder 9 by a linear drive. A pressure plate 20 is fixed to the output end of the second cylinder 9. An upper connector is fixed inside the fixing shell 22. When the second cylinder 9 is activated, it extends to control the pressure plate 20 to fix the upper connector. The upper connector can be moved up and down inside the cavity 20 by a linear drive.

[0043] It should be added that the linear drive is an electric slide rail system.

[0044] A rubber plate 27 is fixed on the side of the pressure plate 210 near the upper connector to increase friction and prevent damage to the exterior of the upper connector.

[0045] The cavity 20 has air ducts 11 fixed around its interior. A nozzle 28 is fixed at the end of the air duct 11. The top of the air duct 11 extends through the exterior of the upper mounting shell 25. A first pump body 14 is fixed at the top of the air duct 11. Activating the first pump body 14 can blow external air through the air duct 11 and then through the nozzle 28.

[0046] The lifting assembly includes two sets of fixing rods 3 fixed on the base plate 1. A connecting plate 4 is fixed on the two sets of fixing rods 3. A third cylinder 5 is fixed on the connecting plate 4. A connecting block 6 is fixed to the output end of the third cylinder 5. A lifting plate 2 is fixed to the bottom of the connecting block 6. The lifting plate 2 is fixedly connected to the upper mounting shell 25. The lifting plate 2 is slidably connected to the two sets of fixing rods 3. The third cylinder 5 is activated to control the lifting plate 2 to rise and fall, so as to facilitate contact with the lower mounting shell 8 to form a test chamber.

[0047] Limiting rods 7 are fixed on both sides of the lower mounting shell 8, and the limiting rods 7 are slidably connected to the lifting plate 2;

[0048] Cameras 29 are fixed around the inner walls of cavity 19.

[0049] The lower connector has several insertion holes 18, and guide sleeves 16 are fixed on both sides of the lower connector.

[0050] Several optical fibers 17 are fixed on the upper connector, and each optical fiber 17 is matched with a socket 18. Guide posts 12 are fixed on both sides of the upper connector, and the guide posts 12 cooperate with the guide sleeves 16.

[0051] It should be added that the combination of the upper connector and the lower connector constitutes a connector group.

[0052] The tooling testing system includes a data acquisition module and an adjustment module. The data acquisition module includes an image receiving submodule and a logic judgment submodule. The image receiving submodule is electrically connected to the camera 29.

[0053] The adjustment module includes a marking submodule, a telescopic control submodule, and an alarm submodule. The telescopic control submodule is electrically connected to the first cylinder 13, the third cylinder 5, the second cylinder 9, and the linear drive.

[0054] The tooling testing system includes the following specific operating steps:

[0055] Step 1: Fix the lower connector inside the first fixing housing 21, and fix the upper connector inside the second fixing housing 22;

[0056] Step 2: Start the lifting assembly, control the lifting plate 2 and the lower mounting shell 8 to form a test cavity, and then control the upper connector to move downward through the linear drive so that the upper connector and the lower connector are connected.

[0057] Specifically, the third cylinder 5 is activated to extend and drive the lifting plate 2 to move downward, so that cavity 19 and cavity 20 form a test chamber. Then, the telescopic control submodule controls the linear actuator to drive the two sets of second cylinders 9 to move downward, so that the upper connector moves downward and inserts the guide post 12 into the guide sleeve 16, which plays a guiding and positioning role, so that the optical fiber 17 is inserted into the socket 18 of the lower connector, and the upper connector and the lower connector are connected.

[0058] Step 3: After the upper connector and the lower connector are connected, the camera 29 is used to photograph the mating point of the upper connector and the lower connector to determine the matching status of the upper connector and the lower connector, and different measures are taken according to the matching status;

[0059] Specifically, the camera 29 transmits the image of the mating point of the upper and lower connectors to the image receiving submodule. When the mating point of the upper and lower connectors is found to be perfectly matched, it indicates that the matching degree of the upper and lower connectors is good. When the mating point of the upper and lower connectors is found to be uneven, it indicates that the matching degree of the upper and lower connectors is poor. When the mating point of the upper and lower connectors is found to be flat (parallel to each other) but not completely mated with a small gap between them, it indicates that there is a jamming situation between the upper and lower connectors, indicating that the matching degree is medium.

[0060] When the matching degree between the upper connector and the lower connector is medium, first clean the impurities from the guide sleeve 16 and the socket 18 on the lower connector, and then control the extension of the third cylinder 5 to increase the mating strength between the upper connector and the lower connector.

[0061] Specifically, the first pump 14 is activated to draw external air through the duct 11 and then through the nozzle 28, spraying the air into the guide sleeve 16 and socket 18 on the lower connector to blow out internal impurities. After the impurities are blown out, the linear drive is controlled to move the upper connector downwards. The camera 29 then identifies the matching status of the upper and lower connector joints. If the upper and lower connector joints are perfectly matched at this point, it indicates that impurities are affecting the matching. If the upper and lower connector joints remain unchanged, it means that the diameter of the guide post 12 is slightly larger than the diameter of the guide sleeve 16 or the diameter of the optical fiber 17 is slightly larger than the diameter of the socket 18, proving that there is a dimensional deviation between the guide post 12 and the guide sleeve 16, and between the optical fiber 17 and the socket 18, but they are still concentric (e.g., ...). Figure 6 (As shown), the signal is transmitted to the alarm submodule to inform the staff to remove the connector on it;

[0062] When the upper and lower connectors have poor matching, it indicates that the guide post 12 and guide sleeve 16, and the optical fiber 17 and socket 18 are not concentric (e.g., Figure 7 As shown in the figure, this proves that the connector assembly is defective and cannot be used normally.

[0063] By taking the above steps, the matching degree of the upper and lower connectors is determined, and it is identified whether the guide post 12 and the guide sleeve 16, and the optical fiber 17 and the socket 18 are in a concentric state, so as to ensure the detection accuracy.

[0064] Step 4: When the matching degree of the upper and lower connectors is high, multiple insertions and removals are required to further determine the quality of the connector assembly.

[0065] Step four includes the following specific operational steps:

[0066] Step 4-a: When the matching degree of the upper connector and the lower connector is high, the signal is transmitted to the telescopic control submodule to control the linear drive to move up and down quickly, thereby driving the upper connector and the lower connector to be continuously plugged and unplugged. During the plugging and unplugging process, the docking status of the upper connector and the lower connector is further judged.

[0067] Specifically, the logic judgment submodule is set with a number of insertion / removal cycles N. During the insertion / removal process, step three is repeated to detect the matching status of the upper and lower connectors in real time. When the number of insertion / removal cycles reaches N and the matching degree between the upper and lower connectors is good, it indicates that the guide post 12 and guide sleeve 16, and the optical fiber 17 and socket 18 are not affected by the frictional force between insertion and removal. When the number of insertion / removal cycles has not reached N and the matching degree between the upper and lower connectors deteriorates, it indicates that the guide post 12 and guide sleeve 16, and the optical fiber 17 and socket 18 are deformed due to heat generated by a large amount of friction during rapid insertion / removal, affecting the matching degree. At this time, the operation of the linear drive is paused. For a period of time, the first pump body 14 is activated simultaneously to spray airflow onto the guide post 12 and guide sleeve 16, optical fiber 17 and socket 18 to cool down the guide post 12 and guide sleeve 16, optical fiber 17 and socket 18. After cooling down, the rapid insertion and removal state is restored. During the rapid insertion and removal process, the matching status of the connector group is still judged. When the matching degree of the connector group is restored, subsequent work can be carried out. When the matching degree of the connector group is still problematic, it indicates that the guide post 12 and guide sleeve 16, optical fiber 17 and socket 18 on the connector group are easily affected by heat and deformed and difficult to recover. At this time, the signal is transmitted to the marking submodule to mark the connector as A.

[0068] When the upper connector is marked as A, the camera 29 continues to capture the status of the upper connector. If the upper connector is found to be asymmetrical, it means that the pressure plates 10 on both sides of the upper connector have shifted during multiple rapid insertion and removal processes, resulting in unevenness at the joint between the upper and lower connectors. This affects the joint between the upper and lower connectors during rapid insertion and removal. Therefore, it is necessary to inform the staff to reinstall and adjust the upper connector to improve the detection efficiency.

[0069] Step 4-b: After the rapid insertion and removal, further assess the quality of the connector assembly.

[0070] Specifically, the linear drive is controlled to descend so that the upper connector mates with the lower connector, and the pressure plate 210 is no longer controlled to hold the upper connector. At this time, the camera 29 captures the appearance of the upper connector in real time and transmits it to the image receiving submodule. Since the staff sets the normal appearance of the upper connector in the logic judgment submodule, the state of the upper connector received by the image receiving submodule is compared with the image set in the logic judgment submodule. If the two match, it means that the appearance of the upper connector has not been deformed. If it does not match the image set in the logic judgment submodule, it means that the upper connector is subjected to excessive pressure from the pressure plate 210 during the insertion and removal process, resulting in a large degree of deformation.

[0071] Furthermore, when the upper connector is marked as A, since the upper connector is displaced and its shape is deformed during the rapid insertion and removal process, it indicates that the upper connector is displaced due to deformation, thus affecting the rapid insertion and removal test. The signal is transmitted to the alarm submodule to inform the staff that there is a quality problem with the upper connector. When the upper connector is displaced during the rapid insertion and removal process, but its shape is not deformed, it indicates that the friction of the pressure plate 10 when clamping the upper connector is reduced, indicating that there is a problem with the test accuracy of the test fixture. The alarm submodule can be used to notify the staff for repair.

[0072] Through the above steps, the quality of the connector can be detected when the test fixture quickly inserts and removes the connector, and the testing accuracy of the test fixture can also be judged based on the condition of the connector being clamped.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection, the internal communication between two components, or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0074] The above provides a detailed description of a rectangular MT fiber optic connector testing fixture provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rectangular MT fiber optic connector testing fixture, comprising a base plate (1), a lifting assembly disposed on the base plate (1), a detection assembly disposed on the base plate (1), and a fixture testing system, characterized in that: The lifting component is connected to the detection component. The lifting component controls the lifting of the detection component to connect the connector, which facilitates the detection component to detect the quality of the connector. The detection assembly includes a lower mounting shell (8) fixed above the base plate (1) and an upper mounting shell (25) disposed on the lower mounting shell (8). A cavity (19) is provided on the lower mounting shell (8). A fixing shell (21) is fixed inside the cavity (19). Fixing grooves (23) are provided on both sides of the fixing shell (21). A first cylinder (13) is fixed on the inner walls of both sides of the cavity (19). A pressure plate (15) is fixed at the output end of the first cylinder (13). A lower connector is placed inside the fixing shell (21). The upper mounting shell (25) has a cavity two (20), and a fixing shell two (22) is fixed inside the cavity two (20). Fixing groove two (24) is opened on both sides of the fixing shell two (22), and the fixing groove two (24) penetrates the side of the fixing shell two (22). The inner walls of both sides of the cavity two (20) are connected to a second cylinder (9) by a linear drive. The output end of the second cylinder (9) is fixed with a pressure plate two (10). The upper connector is fixed inside the fixing shell two (22). Cameras (29) are fixed around the inner wall of the cavity (19). The cavity 2 (20) is fixed with an air duct (11) around its interior. A nozzle (28) is fixed at the end of the air duct (11). The top of the air duct (11) extends through the outside of the upper mounting shell (25). A first pump body (14) is fixed at the top of the air duct (11). The lower connector has several insertion holes (18), and guide sleeves (16) are fixed on both sides of the lower connector. The upper connector is fixed with several optical fibers (17), each optical fiber (17) is matched with a socket (18), and guide posts (12) are fixed on both sides of the upper connector, each guide post (12) is matched with a guide sleeve (16).

2. The rectangular MT fiber optic connector testing fixture according to claim 1, characterized in that: The pressure plate 2 (10) is fixed with a rubber plate 2 (27) on the side near the upper connector. A rubber plate (26) is fixed to the side of the pressure plate (15) near the lower connector.

3. The rectangular MT fiber optic connector testing fixture according to claim 2, characterized in that: The lifting assembly includes two sets of fixing rods (3) fixed on the base plate (1), a connecting plate (4) fixed on the two sets of fixing rods (3), a third cylinder (5) fixed on the connecting plate (4), a connecting block (6) fixed at the output end of the third cylinder (5), a lifting plate (2) fixed at the bottom of the connecting block (6), the lifting plate (2) fixedly connected to the upper mounting shell (25), and the lifting plate (2) and the two sets of fixing rods (3) are slidably connected.

4. The rectangular MT fiber optic connector testing fixture according to claim 3, characterized in that: Limiting rods (7) are fixed on both sides of the lower mounting shell (8), and the limiting rods (7) are slidably connected to the lifting plate (2).

5. The rectangular MT fiber optic connector testing fixture according to claim 4, characterized in that: The tooling testing system includes a data acquisition module and an adjustment module. The data acquisition module includes an image receiving submodule and a logic judgment submodule. The image receiving submodule is electrically connected to the camera (29). The adjustment module includes a marking submodule, a telescopic control submodule and an alarm submodule. The telescopic control submodule is electrically connected to the first cylinder (13), the third cylinder (5), the second cylinder (9) and the linear drive.

6. The rectangular MT fiber optic connector test fixture according to claim 5, characterized in that: The tooling testing system includes the following specific operating steps: Step 1: Fix the lower connector inside the first fixed housing (21) and fix the upper connector inside the second fixed housing (22); Step 2: Start the lifting assembly, control the lifting plate (2) and the lower mounting shell (8) to form a test cavity, and then control the upper connector to move downward through the linear drive so that the upper connector and the lower connector are connected; Step 3: After the upper connector and the lower connector are connected, the upper connector and the lower connector are photographed by the camera (29) to determine the matching status of the upper connector and the lower connector, and different measures are taken according to the matching status. Step 4: When the matching degree of the upper and lower connectors is high, multiple insertions and removals are required to further determine the quality of the connector assembly.

7. The rectangular MT fiber optic connector testing fixture according to claim 6, characterized in that: Step four includes the following specific operational steps: Step 4-a: When the matching degree of the upper connector and the lower connector is high, the signal is transmitted to the telescopic control submodule to control the linear drive to move up and down quickly, thereby driving the upper connector and the lower connector to be continuously plugged and unplugged. During the plugging and unplugging process, the docking status of the upper connector and the lower connector is further judged. Step 4-b: After quick plugging and unplugging, further assess the quality of the connector assembly.

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