A terminal line performance test device

Abstract

The application relates to a terminal wire performance test device, which comprises a first clamping device, a second clamping device, a tension test device and a bending resistance test device; the first clamping device is used for clamping a terminal; the second clamping device is located on one side of the first clamping device and is used for clamping the end of an electric wire and comprises a moving seat and a second clamp elastically connected to the moving seat; the tension test device is arranged on the moving seat and comprises a tension sensor and a clamping piece; one end of the tension sensor is connected to the moving seat, and the other end is connected to the clamping piece; the bending resistance test device is used for extruding the connection between the terminal and the electric wire and comprises an air pipe located at the rotation axis of the rotating disc and an air bag arranged on the air pipe. The tension test device and the bending resistance test device are integrated, the tension resistance and the bending resistance of the terminal wire can be tested at the same time, the test cost of the terminal wire is effectively reduced, and the test efficiency of the terminal wire is improved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and more particularly, to a terminal wire performance testing device. Background Technology

[0002] Terminal wires are electrical wires used for connections between devices, consisting of terminals and wires. During the production process, terminal wires require corresponding performance tests, such as tensile testing. Current technology typically uses tensile testing machines to test whether the terminal wires meet the required tensile strength. However, with increasingly stringent performance requirements for terminal wires, more and more companies are focusing on their bending resistance, especially at the connection between the terminal and the wire. Existing tensile testing machines can only test the tensile strength of terminal wires, not their bending resistance. Therefore, effectively testing the tensile and bending resistance of terminal wires has become a pressing issue. Summary of the Invention

[0003] In view of this, the present invention provides a terminal wire performance testing device that can simultaneously test tensile strength and bending resistance.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A terminal wire performance testing device includes: a first clamping device, a second clamping device, a tensile testing device, and a bending resistance testing device; the first clamping device is used to clamp the terminal and includes a support frame, a turntable rotatably mounted on the support frame, a rotary drive for driving the turntable to rotate, and a first clamp rotatably connected to the turntable, the first clamp being close to the edge of the turntable;

[0006] The second clamping device is located on one side of the first clamping device and is used to clamp the end of the wire. It includes a linear module, a movable base disposed at the output end of the linear module, and a second clamp elastically connected to the movable base.

[0007] The tensile testing device is mounted on the movable base and located between the first clamping device and the second clamping device. It is used to clamp the wire and includes a tensile sensor and a clamping component. One end of the tensile sensor is connected to the movable base and the other end is connected to the clamping component.

[0008] The bending resistance testing device is used to compress the connection between the terminal and the wire, and includes an air tube located at the rotation axis of the turntable, and an air bladder disposed on the air tube, the air bladder being close to the turntable.

[0009] In the above technical solution, when testing the terminal wire, the terminal is fixed on the first clamp and the wire is fixed on the second clamp. At this time, the terminal wire is first subjected to a tensile test. During the tensile test, the clamping component clamps a certain part of the wire body, that is, the clamping component acts on the wire. Then, the moving seat moves away from the first clamp under the drive of the linear module, that is, the clamping component pulls the wire. While the clamping component pulls the wire, the tensile sensor senses the corresponding tensile force until the tensile force reaches the specified value and then stops. If the terminal and the wire do not detach from each other at this time, it means that the tensile performance of the terminal wire is qualified.

[0010] After the tensile strength test of the terminal wire is passed, the clamp releases the wire and begins the bending resistance test. At this time, the second clamp acts on the wire, and the air tube inflates the airbag to make the airbag expand and squeeze the connection between the wire and the terminal, causing the terminal and the wire to bend relative to each other. Then the turntable starts to rotate, and the airbag will continuously squeeze the connection between the terminal and the wire back and forth, thereby testing the bending resistance of the terminal wire.

[0011] Therefore, by integrating a tensile testing device and a bending resistance testing device, this invention enables centralized testing of the tensile and bending resistance properties of terminal wires, effectively reducing testing costs and improving testing efficiency.

[0012] Alternatively, in one possible implementation, the rotation axis of the second clamp is offset from that of the first clamp.

[0013] In the above technical solution, when the first clamp drives the terminal to rotate, it does not rotate around the second clamp as the center. This allows the second clamp to slide back and forth on the moving seat, thereby changing the contact point between the airbag and the wire, thus achieving the bending of the wire back and forth.

[0014] Alternatively, in one possible implementation, the turntable is provided with a mounting shaft, which is rotatably mounted to the support frame via bearings.

[0015] In the above technical solution, the installation shaft facilitates the installation of the turntable, and the installation shaft is connected to the support frame through bearings. The rolling friction characteristics of the bearings enable the turntable to rotate smoothly, reducing frictional resistance and wear, and extending the service life of the turntable and the entire system.

[0016] Optionally, in one possible implementation, the rotary drive includes a motor, a drive wheel disposed on the output shaft of the motor, a driven wheel disposed on the mounting shaft, and a transmission belt for connecting the drive wheel and the driven wheel.

[0017] In the above technical solution, the motor drives the rotation of the driving wheel, which in turn drives the rotation of the driven wheel through the transmission belt, thereby driving the rotation of the mounting shaft and the turntable. The structure is simple and easy to assemble, and the speed of the turntable can be flexibly adjusted according to actual needs.

[0018] Optionally, in one possible implementation, the mounting shaft and the turntable are provided with through holes, the air tube passes through the through holes, one end of the air tube is connected to the airbag, and the other end is connected to the inflation device.

[0019] In the above technical solution, connecting the inflation device to the airbag via an air tube ensures a continuous and stable air supply to the airbag during operation, preventing a decrease in clamping force or failure due to insufficient or unstable air pressure, thus improving the system's stability and reliability. Furthermore, the air tube is located within a through-hole, preventing it from interfering with the rotation of the turntable and avoiding the problem of additional space occupation.

[0020] Optionally, in one possible implementation, the movable seat is provided with a fixed block, the second clamp is slidably disposed on the movable seat, and the fixed block and the second clamp are connected by an elastic element.

[0021] In the above technical solution, the elastic element can achieve an elastic connection between the end of the wire and the moving base, and ensure that the wire is always taut when the turntable rotates, thereby ensuring the accuracy of the terminal wire bending resistance test results.

[0022] Optionally, in one possible implementation, the clamping member includes a finger cylinder and two clamping plates fixed to the two output ends of the finger cylinder, with anti-slip pads provided on opposite sides of the two clamping plates.

[0023] In the above technical solution, the finger cylinder serves as the power source, and its precise control enables the two clamping plates to accurately clamp the workpiece. Furthermore, anti-slip pads are provided on opposite sides of the clamping plates, effectively increasing the friction between the clamping plates and the workpiece and preventing the workpiece from sliding or falling off during clamping. In addition to their anti-slip function, the anti-slip pads also protect the surface of the wire during clamping, preventing scratches or damage to the wire surface caused by excessive clamping force or improper clamping methods.

[0024] Optionally, in one possible implementation, an extension plate is provided on one side of the movable seat, and the tensile testing device further includes a lifting drive component, which includes a lifting cylinder disposed on the extension plate and an "L"-shaped plate disposed at the output end of the lifting cylinder, and the tensile sensor is disposed on the "L"-shaped plate.

[0025] In the above technical solution, the extension plate facilitates the installation of the tensile testing device and allows for a lower installation height, avoiding interference with subsequent wire movement. The lifting drive ensures that the "L"-shaped plate and the tensile sensor and clamping components mounted on it can be smoothly and accurately raised and lowered to the required height during the test. When it is not necessary to clamp the wire, it can be lowered away from the wire to facilitate subsequent bending resistance testing.

[0026] Optionally, in one possible implementation, the first clamp and the second clamp have the same structure, each including a hollow housing with an opening on one side, a rotating handle threaded onto the housing, and two pressure blocks, the two pressure blocks being arranged opposite to each other and located at one end of the rotating handle and inside the housing, respectively.

[0027] In the above technical solution, the first clamp and the second clamp have simple and effective structural designs. When performing clamping operations, it is only necessary to insert the terminal or wire into the housing, and then reduce the distance between the two pressure blocks by rotating the handle. The self-locking function of the thread can then be used to effectively clamp the terminal or wire.

[0028] Alternatively, in one possible implementation, both of the opposing sides of the two pressure blocks are provided with wavy embossing.

[0029] In the above technical solution, the wavy embossing design increases the contact area between the pressure block and the terminal or wire, and the unevenness of the embossing provides greater friction, thereby more effectively preventing the terminal or wire from sliding or falling off during the test. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of one embodiment.

[0032] Figure 2 This is a partial structural schematic diagram of the second clamping device in one embodiment.

[0033] Figure 3 This is a schematic diagram of the structure of the first fixture in one embodiment.

[0034] Figure 4 This is a schematic diagram of the structure of a clamping component in one embodiment.

[0035] Reference numerals: 1-First clamping device; 11-Support frame; 12-Turntable; 121-Mounting shaft; 122-Through hole; 13-Rotation drive component; 131-Motor; 132-Driving wheel; 133-Driven wheel; 134-Transmission belt; 14-First clamp; 141-Housing; 142-Handle; 143-Pressure block; 2-Second clamping device; 21-Linear module; 22-Moving seat; 221-Fixing block; 222-Elastic component; 23-Second clamp; 3-Tension testing device; 31-Tension sensor; 32-Clamping component; 321-Finger cylinder; 322-Clamping plate; 3221-Anti-slip mat; 33-Lifting drive component; 331-Lifting cylinder; 332-"L"-shaped plate; 4-Bending resistance testing device; 41-Air pipe; 42-Airbag; 5-Terminal wire. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] Please refer to Figure 1 and Figure 2This embodiment provides a terminal wire 5 performance testing device, including: a first clamping device 1, a second clamping device 2, a tensile testing device 3, and a bending resistance testing device 4; the first clamping device 1 is used to clamp the terminal and includes a support frame 11, a turntable 12 rotatably mounted on the support frame 11, a rotary drive 13 for driving the turntable 12 to rotate, and a first clamp 14 rotatably connected to the turntable 12, the first clamp 14 being close to the edge of the turntable 12; the second clamping device 2 is located on one side of the first clamping device 1 and is used to clamp the end of the wire, including a linear module 21 disposed on the linear module 21. The module 21 has a movable base 22 at its output end and a second clamp 23 elastically connected to the movable base 22; a tensile testing device 3 is located on the movable base 22 and between the first clamping device 1 and the second clamping device 2, for clamping wires, including a tensile sensor 31 and a clamping member 32, one end of the tensile sensor 31 is connected to the movable base 22 and the other end is connected to the clamping member 32; a bending resistance testing device 4 is used for the connection between the extrusion terminal and the wire, including an air pipe 41 located at the rotation axis of the turntable 12 and an air bladder 42 located on the air pipe 41, the air bladder 42 being close to the turntable 12.

[0039] Specifically, the first clamping device 1 and the second clamping device 2 are spaced apart. The support frame 11 and the linear module 21 are both mounted on a horizontal ground or platform. The first clamp 14 can rotate relative to the turntable 12. Thus, when the turntable 12 drives the first clamp 14 to rotate, the terminal rotates simultaneously with the turntable 12, effectively preventing relative twisting between the wire and the terminal that could cause the wire to break. Furthermore, the linear module 21 is a conventional device in the prior art, and its specific structure will not be described in detail here. The linear module 21 can drive the movable seat 22 to move closer to or further away from the first clamping device 1. Additionally, the airbag 42 can be spherical or olive-shaped.

[0040] In this embodiment, when testing the terminal wire 5, the terminal is fixed on the first clamp 14 and the wire is fixed on the second clamp 23. At this time, the terminal wire 5 is first subjected to a tensile test. During the tensile test, the clamping member 32 clamps a certain part of the wire body, that is, the clamping member 32 acts on the wire. Then, the moving seat 22 moves away from the first clamp 14 under the drive of the linear module 21. That is, the clamping member 32 will pull the wire to move. At the same time as the clamping member 32 pulls the wire, the tensile sensor 31 will sense the corresponding tensile force until the tensile force reaches the specified value and then stops. If the terminal and the wire do not detach from each other at this time, it means that the tensile performance of the terminal wire 5 is qualified.

[0041] After the tensile strength test of terminal wire 5 is passed, clamp 32 releases the wire, and the bending resistance test begins. At this time, the second clamp 23 acts on the wire, and air tube 41 inflates the airbag 42, causing it to expand and compress the connection between the wire and the terminal, resulting in a relative bend between the terminal and the wire. Then, turntable 12 begins to rotate, and the airbag 42 continuously compresses the connection between the terminal and the wire, thus testing the bending resistance of terminal wire 5. It is also worth mentioning that the wire can be continuously and uninterruptedly compressed by continuously inflating and deflating the airbag 42, thus achieving repeated bending of the wire. Furthermore, it should be noted that applying pressure to the wire using the airbag 42 can further exacerbate the bending fatigue of the wire, thereby shortening the test time.

[0042] In summary, this embodiment, by integrating the tensile testing device 3 and the bending resistance testing device 4, enables centralized testing of the tensile and bending resistance properties of the terminal wire 5, effectively reducing the testing cost of the terminal wire 5 and improving the testing efficiency of the terminal wire 5.

[0043] In this embodiment, the rotation axes of the second clamp 23 and the first clamp 14 are misaligned. Specifically, when the first clamp 14 drives the terminal to rotate, it does not rotate around the second clamp 23. Since the length of the wire remains constant, the second clamp 23 needs to compensate for the distance when the first clamp 14 rotates around the axis of the turntable 12. As a result, the second clamp 23 slides back and forth on the movable seat 22, which allows the contact point between the airbag 42 and the wire to change back and forth, thus achieving the back and forth bending of the wire.

[0044] In this embodiment, the turntable 12 is provided with a mounting shaft 121, which is rotatably mounted on the support frame 11 via bearings. The mounting shaft 121 is located at the rotation center of the turntable 12. The mounting shaft 121 facilitates the installation of the turntable 12. The mounting shaft 121 passes through the support frame 11 and is connected to the support frame 11 via bearings. The rolling friction characteristics of the bearings enable the turntable 12 to rotate smoothly, reducing frictional resistance and wear, and extending the service life of the turntable 12 and the entire system.

[0045] In this embodiment, the rotary drive component 13 includes a motor 131, a drive wheel 132 mounted on the output shaft of the motor 131, a driven wheel 133 mounted on the mounting shaft 121, and a transmission belt 134 connecting the drive wheel 132 and the driven wheel 133. The motor 131 drives the drive wheel 132 to rotate, and the drive wheel 132 drives the driven wheel 133 to rotate via the transmission belt 134, thereby driving the rotation of the mounting shaft 121 and the turntable 12. Its structure is simple, easy to assemble, and the rotational speed of the turntable 12 can be flexibly adjusted according to actual needs. Specifically, the drive wheel 132 and the driven wheel 133 can be pulleys, and the transmission belt 134 can be a belt. Of course, the drive wheel 132 and the driven wheel 133 can also be sprockets, in which case the transmission belt 134 is a chain. Furthermore, the drive wheel 132 and the driven wheel 133 can also be gears, and the transmission belt 134 can be a gear belt, i.e., transmission is achieved through several gears.

[0046] In this embodiment, the mounting shaft 121 and the turntable 12 are provided with through holes 122. The air pipe 41 passes through the through hole 122, with one end of the air pipe 41 connected to the airbag 42 and the other end connected to the inflation device. Specifically, the air pipe 41 is fixedly installed. It can be fixed to the support frame 11 by means of brackets or other fasteners, or it can be directly fixed to the inflation device and kept stationary. The inflation device can be an electric air pump or a compressor, etc.

[0047] Connecting the inflation device to the airbag 42 via the air tube 41 ensures a continuous and stable air supply to the airbag 42 during operation, preventing a decrease in clamping force or failure due to insufficient or unstable air pressure in the airbag 42, thus improving the stability and reliability of the system. Furthermore, the air tube 41 is located within the through hole 122, so it does not interfere with the rotation of the turntable 12 and avoids the problem of occupying additional space.

[0048] In this embodiment, a fixing block 221 is provided on the movable base 22, and a second clamp 23 is slidably disposed on the movable base 22. The fixing block 221 and the second clamp 23 are connected by an elastic element 222. Specifically, the elastic element 222 is a metal spring, one end of which is fixed to the fixing block 221, and the other end is fixed to the second clamp 23. The second clamp 23 can be directly placed on the surface of the movable base 22 and can slide on the surface of the movable base 22. Of course, a placement platform can also be added to the movable base 22 to support the second clamp 23 as needed.

[0049] The elastic element 222 enables an elastic connection between the end of the wire and the movable seat 22, and ensures that the wire remains taut when the turntable 12 rotates, thereby ensuring the accuracy of the bending resistance test results of the terminal wire 5.

[0050] Please refer to Figure 2 and Figure 4 In this embodiment, the clamping component 32 includes a finger cylinder 321 and two clamping plates 322 fixed to the two output ends of the finger cylinder 321. Anti-slip pads 3221 are provided on opposite sides of each clamping plate 322. The finger cylinder 321 is horizontally positioned, while the two clamping plates 322 are vertically positioned. The finger cylinder 321 serves as a power source, and its precise control enables the two clamping plates 322 to accurately clamp the workpiece. Furthermore, the anti-slip pads 3221 on opposite sides of the clamping plates 322 effectively increase the friction between the clamping plates 322 and the workpiece, preventing the workpiece from sliding or falling off during clamping. In addition to their anti-slip function, the anti-slip pads 3221 also protect the surface of the wire during clamping, preventing scratches or damage to the wire surface caused by excessive clamping force or improper clamping methods.

[0051] Furthermore, in this embodiment, the movable base 22 has an extension plate on one side, and the tensile testing device 3 also includes a lifting drive component 33. The lifting drive component 33 includes a lifting cylinder 331 mounted on the extension plate and an "L"-shaped plate 332 mounted on the output end of the lifting cylinder 331. The tensile sensor 31 is mounted on the "L"-shaped plate 332. A stepped structure is formed between the extension plate and the movable base 22, and the thickness of the extension plate is less than the thickness of the movable base 22, which allows the tensile testing device 3 to be installed at a lower position. Secondly, the "L"-shaped plate 332 facilitates the installation of the tensile sensor 31 and the clamping component 32, and can further lower the tensile sensor 31 and the clamping component 32, so that the terminal wire 5 can be lowered to a lower position after the tensile test is completed, avoiding interference with the subsequent bending resistance test.

[0052] The extension plate facilitates the installation of the tensile testing device 3 and allows for a lower installation height, avoiding interference with subsequent wire movement. The lifting drive 33 ensures that the "L"-shaped plate 332, along with the tensile sensor 31 and clamping member 32 mounted on it, can be smoothly and accurately raised and lowered to the required height during testing. When clamping the wire is not required, it can be lowered away from the wire to facilitate subsequent bending resistance testing.

[0053] Please refer to Figure 3 In this embodiment, the first clamp 14 and the second clamp 23 have the same structure, both including a hollow housing 141 with an opening on one side, a rotating handle 142 threadedly connected to the housing 141, and two pressure blocks 143. The two pressure blocks 143 are arranged opposite to each other and are located at one end of the rotating handle 142 and inside the housing 141, respectively. Specifically, one end of the rotating handle 142 is located inside the housing, and the other end extends outside the housing. The end extending outside the housing has a bent structure or is provided with a handle to facilitate user operation and rotation.

[0054] The first clamp 14 and the second clamp 23 in this embodiment have a simple and effective structural design. When performing clamping operations, the terminal or wire is simply inserted into the housing 141, and the distance between the two pressure blocks 143 is reduced by rotating the handle 142. The self-locking function of the thread can then be used to effectively clamp the terminal or wire.

[0055] Furthermore, it should be noted that both pressure blocks 143 have wavy embossing on their opposite sides. The wavy embossed sides of both pressure blocks 143 are flexible structures, and the wavy embossing design increases the contact area between the pressure block 143 and the terminal or wire. Moreover, due to the unevenness of the embossing, it can provide greater friction, thereby more effectively preventing the terminal or wire from sliding or falling off during the test.

[0056] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A terminal wire performance test apparatus characterized by comprising: The utility model relates to a terminal bending test device, including: First clamping device for clamping terminal, including support frame, rotary disc rotatably installed on the support frame, rotation driving part for driving the rotary disc to rotate, and first clamp rotatably connected to the rotary disc, the first clamp is close to the edge of the rotary disc; Second clamping device is located at one side of the first clamping device and is used for clamping the end of electric wire, including linear module, moving seat arranged at the output end of the linear module, and second clamp elastically connected to the moving seat; Tension test device is arranged on the moving seat and is located between the first clamping device and the second clamping device and is used for clamping electric wire, including tension sensor and clamping piece, one end of the tension sensor is connected with the moving seat, and the other end is connected with the clamping piece;The second clamp is arranged in dislocation with the rotation axis of the first clamp; Bending resistance test device is used for extruding the connecting place of terminal and electric wire, including air pipe at the rotation axis of the rotary disc and air bag arranged on the air pipe, and the air bag is close to the rotary disc; The moving seat is provided with a fixed block, and the second clamp is slidably arranged on the moving seat, and the fixed block and the second clamp are connected by an elastic member;One side of the moving seat is provided with an extension plate, and the tension test device further includes a lifting driving element, the lifting driving element includes a lifting air cylinder arranged on the extension plate and an "L" type plate arranged at the output end of the lifting air cylinder, and the tension sensor is arranged on the "L" type plate.

2. The terminal wire performance test apparatus according to claim 1, characterized by The rotary disc is provided with a mounting shaft, and the mounting shaft is rotatably mounted on the support frame through a bearing.

3. The terminal wire performance test apparatus according to claim 2, characterized by The rotation driving part includes a motor, a driving wheel arranged on the output shaft of the motor, a driven wheel arranged on the mounting shaft, and a transmission belt for connecting the driving wheel and the driven wheel.

4. The terminal wire performance test apparatus according to claim 2, characterized by The mounting shaft and the rotary disc are provided with through holes, the air pipe passes through the through holes, one end of the air pipe is communicated with the air bag, and the other end is connected to an inflating device.

5. The terminal wire performance test apparatus according to claim 1, characterized by The clamping piece includes a finger air cylinder and two clamping plates fixed to the two output ends of the finger air cylinder, and the opposite sides of the two clamping plates are provided with anti-skid pads.

6. The terminal line performance test apparatus according to any one of claims 1 to 5, characterized by The first clamp and the second clamp have the same structure, and each include a hollow shell with an opening on one side, a handle threadedly connected to the shell, and two pressing blocks oppositely arranged and respectively located at one end of the handle and inside the shell.

7. The terminal line performance test apparatus of claim 6, wherein The opposite sides of the two pressing blocks are provided with wave-shaped pressing lines.

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