Wire bending tester

Abstract

The invention relates to the technical field of electric wire detection, and discloses an electric wire bending tester which comprises a test bench, a plurality of test electric wires are arranged above the test bench, the two ends of each test electric wire are fixedly connected with wiring ports, the external center position of each test electric wire is sleeved with a lantern ring, and the lantern ring is fixedly connected with the test electric wires. A central shaft rod is arranged at the central position among the plurality of lantern rings, one end, far away from the motor, of the central shaft rod is rotatably connected with a clamping rod seat, the clamping rod seat is fixedly mounted at the top of the test bed, clamping assemblies are arranged outside the two groups of wiring ports, and expanding and moving assemblies are arranged outside the lantern rings. The dynamic bending test restores the stress state of the electric wire in actual use more truly by simulating the rotation process of the electric wire after bending, is closer to the stress condition of the electric wire in actual use, and can reflect the performance change of the electric wire in long-term bending more accurately.

Description

Technical Field

[0001] The invention belongs to the technical field of electric wire detection, and particularly relates to an electric wire bending tester. Background Art

[0002] The wire bending tester is a device specially used to test the folding strength of wires. It has the characteristics of multi-station design, adjustable bending angle, automatic counting and stopping, and adjustable load. By simulating the bending conditions of wires in actual use, the wires are repeatedly bent to evaluate their folding resistance and reliability. This equipment is of great significance in the wire and cable manufacturing industry, helping to ensure that the quality and performance of products meet relevant standards and requirements.

[0003] The existing technology also proposes some solutions: for example, a Chinese patent with the announcement number CN205067252U discloses a wire bending resistance testing machine, which includes a chassis, a drag chain device arranged inside the chassis, and a control device arranged outside the chassis. The control device is electrically connected to the drag chain device for controlling the drag chain device; the chassis includes a soundproof shell for sound insulation, a frame mounted inside the soundproof shell for movement of the drag chain device, and a support plate horizontally arranged on the frame for placing the drag chain device. It is easy to use, has high work efficiency, and has low noise during the test process.

[0004] There are ports at both ends of the wire for connecting to electrical appliances or plugs. The connection between the wire and the wiring port needs to be strong enough to withstand mechanical stress such as bending and pulling during daily use. Traditional static bend tests often only focus on the performance of the wire and the port at a specific bending angle, and cannot fully reflect the complex stress conditions that the wire may encounter during actual use. Static bend tests are usually performed at a fixed bending angle and conditions, which limits the comprehensiveness and accuracy of the test.

[0005] To this end, the present invention provides a wire bending tester. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A wire bending testing machine described in the present invention includes a test bench. Above the test bench, there are multiple test wires. Both ends of the multiple test wires are fixedly connected with wiring ports. A collar is sleeved at the central position of the outer part of each test wire. At the central position among the multiple collars, there is a central shaft rod. The central shaft rod is located at the central position among the multiple test wires. One end of the central shaft rod is fixedly connected with a motor, and the motor is fixedly installed on the top of the test bench. The end of the central shaft rod far from the motor is rotatably connected with a clamping rod seat, and the clamping rod seat is fixedly installed on the top of the test bench. Clamping components are arranged outside the two groups of wiring ports, and the clamping components are used to clamp and fix the multiple wiring ports of the two groups. An expansion and displacement component is arranged outside the collar, and the expansion and displacement component adjusts the distance between the multiple collars and the central shaft rod.

[0008] Preferably, clamping platforms are symmetrically and slidably arranged on the top of the test bench. The central shaft rod passes through the central positions of the two clamping platforms and is rotatably connected with the inner wall of the central part of the clamping platforms. Multiple grooves are arranged on the inner walls of the two clamping platforms, and the two groups of wiring ports are respectively located inside the multiple grooves.

[0009] Preferably, the clamping component includes multiple clamping pads. Each clamping pad is respectively slidably connected with the multiple grooves of the clamping platform. Multiple fixing pieces are fixedly connected to the tops of the clamping platforms. The inner walls of the fixing pieces are all threadedly connected with threaded rods. The bottoms of the threaded rods are fixedly connected with the tops of the clamping pads, and the tops of the threaded rods are fixedly connected with knobs.

[0010] Preferably, the expansion and displacement component includes multiple extrusion platforms. The multiple extrusion platforms are all in an inclined state and an inner slider one is slidably connected to the inner wall. The top of each inner slider one is respectively fixedly connected with the bottom of the collar. Slide rods are fixedly connected to both sides of the inner slider one. Inclined sliding grooves are arranged on the side walls of the extrusion platforms. The slide rods are slidably connected with and adapted to the inclined sliding grooves. One ends of the multiple extrusion platforms are all provided with a flat pushing component for simultaneously translating the multiple extrusion platforms.

[0011] Preferably, a fixing seat is fixedly connected to the outer wall of the central shaft rod. Inner sliding grooves are arranged on multiple side surfaces of the fixing seat. An inner slider two is fixedly connected to one side of each extrusion platform. The multiple inner slider twos are respectively slidably connected with and adapted to the inner walls of the inner sliding grooves.

[0012] Preferably, the flat pushing component includes a rotating disk. The rotating disk is fixedly installed on the outer wall of the central shaft rod. Multiple telescopic rods one are fixedly connected to one side of the rotating disk. One ends of the multiple telescopic rods one are all fixedly connected with connecting rods. The ends of the multiple connecting rods far from the telescopic rods one are fixedly connected with one side of the extrusion platform.

[0013] Preferably, movable bases are fixedly connected to the bottoms of both clamping platforms. Bottom sliders are fixedly connected to the bottoms of the movable bases. The bottom sliders are slidably connected to the inner wall of the test bench. One end of the bottom slider is fixedly connected to a return spring, and the end of the return spring away from the bottom slider is fixedly connected to the inner wall surface of the test bench.

[0014] Preferably, damping rods are fixedly connected to both sides of the movable base. Clamping blocks are fixedly connected to one ends of the damping rods. A clamping component is arranged on one side of the clamping block, and the clamping component fixes the position of the movable base after movement.

[0015] Preferably, the clamping component includes a card plate seat. The card plate seat is provided with a plurality of clamping grooves. The shape of the clamping groove is adapted to the shape of the clamping block. A spring is arranged outside the damping rod. One end of the spring is fixedly connected to one side of the movable base, and the end of the spring away from the movable base is fixedly connected to one side of the clamping block.

[0016] Preferably, a connecting plate is fixedly connected between every two card plate seats. Second telescopic rods are symmetrically and fixedly connected to the top of the test bench. One ends of the two second telescopic rods are respectively fixedly connected to the center point of the connecting plate.

[0017] The beneficial effects of the present invention are as follows: 1. For the wire bending test machine of the present invention, by dynamically detecting the wire and the connection port after bending, the dynamic bending test simulates the rotation process of the wire after bending, more truly restores the stress state of the wire in actual use, is closer to the stress situation of the wire in actual use, and can more accurately reflect the performance change of the wire under long-term bending.

[0018] 2. For the wire bending test machine of the present invention, it can simultaneously perform bending tests on multiple wires. The connection port is fixed by the clamping component to ensure that it will not loosen or fall off during the test. The collar causes the connection point between the test wire and the connection port to bend, and by adjusting the position of the collar through the expansion and movement component, the bending angle between the test wire and the connection port can be changed. This flexibility enables the tester to simulate the performance of the wire under different bending conditions, thereby more comprehensively evaluating the durability and reliability of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings.

[0020] Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the structural schematic diagram at the collar of the present invention; Figure 3 is the structural schematic diagram at the clamping platform of the present invention; Figure 4It is a schematic structural diagram of the test wire in the present invention; Figure 5 It is a schematic structural diagram of the rotating disk in the present invention; Figure 6 It is a schematic structural diagram of the fixed seat in the present invention; Figure 7 It is a schematic structural diagram of the first inner slider in the present invention; Figure 8 It is a schematic structural diagram of the connecting rod in the present invention; Figure 9 It is a schematic structural diagram of the connecting plate in the present invention; Figure 10 It is a schematic structural diagram of the clamping block in the present invention.

[0021] In the figure: 1. Test bench; 2. Test wire; 3. Wiring port; 4. Sleeve; 5. Central shaft rod; 6. Motor; 7. Clamp rod seat; 8. Clamping table; 9. Clamping pad; 10. Fixing piece; 11. Threaded rod; 12. Knob; 13. First inner slider; 14. Extrusion table; 15. Slide bar; 16. Inclined chute; 17. Second inner slider; 18. Fixed seat; 19. Inner chute; 20. Connecting rod; 21. First telescopic rod; 22. Rotating disk; 23. Movable base; 24. Bottom slider; 25. Return spring; 26. Spring; 27. Clamping block; 28. Damping rod; 29. Card plate seat; 30. Connecting plate; 31. Second telescopic rod. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the detailed implementation manners.

[0023] As Figures 1 to 8 shown, the present invention provides a technical solution: A wire bending testing machine includes a test bench 1. Above the test bench 1, multiple test wires 2 are provided. Both ends of the multiple test wires 2 are fixedly connected with wiring ports 3. The central position of the outer part of each test wire 2 is sleeved with a sleeve 4. The central position between the multiple sleeves 4 is provided with a central shaft rod 5. The central shaft rod 5 is located at the central position between the multiple test wires 2. One end of the central shaft rod 5 is fixedly connected with a motor 6. The motor 6 is fixedly installed on the top of the test bench 1. The end of the central shaft rod 5 far from the motor 6 is rotatably connected with a clamp rod seat 7. The clamp rod seat 7 is fixedly installed on the top of the test bench 1. Clamping components are arranged outside both groups of wiring ports 3. The clamping components are used to clamp and fix the multiple wiring ports 3 in both groups. An expansion and movement component is arranged outside the sleeve 4. The expansion and movement component adjusts the distance between the multiple sleeves 4 and the central shaft rod 5.

[0024] During operation: Prepare multiple test wires 2 that need to be subjected to a bending test. The connection ports 3 at both ends of the test wire 2 are fixed by a clamping assembly, and the outer center position of each test wire 2 passes through the inside of each collar 4. At this time, the connection points between each test wire 2 and the connection ports 3 at both ends will present a certain bending angle. At this time, start the motor 6 to drive the central shaft 5 to rotate. When the central shaft 5 rotates, it will drive multiple collars 4 to rotate. The multiple collars 4 will rotate around the central shaft 5 as the center point. When the collar 4 rotates, it will drive the test wire 2 to rotate around the central shaft 5 as the central axis. The connection point between the test wire 2 and the connection port 3 will be subjected to a torque force after being bent, thus realizing the test of wire bending. And through the arranged expansion and movement assembly, the distance between the multiple collars 4 and the central shaft 5 can be increased or decreased. When the distance between the collar 4 and the central shaft 5 increases, the bending degree of the connection point between the test wire 2 and the connection port 3 will be greater. When the distance between the collar 4 and the central shaft 5 decreases, the bending degree of the connection point between the test wire 2 and the connection port 3 will be smaller. When the distance between the collar 4 and the central shaft 5 increases, the bending degree of the connection point is greater, so it will be subjected to greater stress and torque force, which is helpful for the performance of the wire under extreme bending conditions and evaluates whether it can meet higher durability requirements. On the contrary, when the distance between the collar 4 and the central shaft 5 decreases, the bending degree of the connection point decreases, and the stress and torque force also decrease accordingly, which can simulate the use of the wire under lighter bending conditions. After the test is completed, it can be judged whether the wire is damaged or broken at the connection point between the test wire 2 and the connection port 3 to determine the bending force condition of the wire. Through the above embodiments, multiple wires can be bent tested simultaneously. The connection port 3 is fixed by the clamping assembly to ensure that it will not loosen or fall off during the test. The collar 4 makes the connection point between the test wire 2 and the connection port 3 bend, and by adjusting the position of the collar 4 through the expansion and movement assembly, the bending angle between the test wire 2 and the connection port 3 can be changed. This flexibility enables the tester to simulate the performance of the wire under different bending conditions, thereby more comprehensively evaluating the durability and reliability of the wire.

[0025] Compared with traditional wire bending test devices, this device conducts a rotational test on the wire and the connection terminals at both ends after bending. This dynamic bending test is closer to the actual force condition of the wire during use and can more accurately reflect the performance changes of the wire under long-term bending.

[0026] As Figures 2 to 4 shown, clamping platforms 8 are symmetrically and slidably arranged on the top of the test bench 1. The central shaft 5 passes through the central positions of the two clamping platforms 8 and is rotatably connected to the central inner wall of the clamping platforms 8. A plurality of grooves are provided on the inner walls of the two clamping platforms 8. Two groups of connection ports 3 are respectively located inside the plurality of grooves.

[0027] During operation: Place the connection ports 3 at both ends of multiple test wires 2 in the grooves of two clamping platforms 8 respectively, and fix the two groups of connection ports 3 in the grooves of the clamping platforms 8 through the clamping assembly. In the initial state, the connection ports 3 at both ends of the test wire 2 are clamped, so that the test wire 2 is in a straight state. When the distance between the collar 4 and the central shaft rod 5 increases or decreases through the expansion and displacement assembly, the bending angle of the connection point between the test wire 2 and the connection port 3 will become larger or smaller. At this time, the distance between the two clamping platforms 8 will increase or decrease adaptively, which is convenient for keeping the test wire 2 in a straight state all the time when changing the bending angle of the connection point between the test wire 2 and the connection port 3. When the collar 4 rotates, it avoids test errors caused by wire relaxation or bending, and improves the accuracy and reliability of the test.

[0028] As Figures 2 to 3 shown, the clamping assembly includes multiple clamping pads 9. Each clamping pad 9 is slidably connected to the multiple grooves of the clamping platform 8. A plurality of fixing members 10 are fixedly connected to the tops of the clamping platforms 8. The inner walls of the fixing members 10 are threadedly connected with threaded rods 11. The bottoms of the threaded rods 11 are fixedly connected to the tops of the clamping pads 9. The tops of the threaded rods 11 are fixedly connected with knobs 12.

[0029] During operation: After placing the connection ports 3 at both ends of the test wire 2 at the designated positions in the grooves provided on the clamping platform 8, rotate the knob 12. The knob 12 will drive the threaded rod 11 to rotate. Since the clamping pad 9 is slidably connected to the groove of the clamping platform 8, when the threaded rod 11 rotates, it will drive the clamping pad 9 to move close to the outer wall of the connection port 3. Since the side wall shape of the clamping pad 9 is adapted to the shape of the connection port 3, when the clamping pad 9 moves to completely and tightly wrap the outer wall of the connection port 3, stop rotating the knob 12. At this time, the clamping pad 9 tightly wraps and clamps the connection port 3 in the groove of the clamping platform 8, thereby ensuring that the connection port 3 will not loosen or fall off during the test.

[0030] As Figures 4 to 8 shown, the expansion and displacement assembly includes multiple extrusion platforms 14. The multiple extrusion platforms 14 are all in an inclined state and an inner slider one 13 is slidably connected to the inner wall. The top of each inner slider one 13 is fixedly connected to the bottom of the collar 4. Both sides of the inner slider one 13 are fixedly connected with slide rods 15. Inclined sliding grooves 16 are formed on the side walls of the extrusion platforms 14. The slide rods 15 are slidably connected to and adapted to the inclined sliding grooves 16. One ends of the multiple extrusion platforms 14 are provided with a flat-pushing assembly for simultaneously translating the multiple extrusion platforms 14.

[0031] During operation: When it is necessary to adjust the distance between the collar 4 and the central shaft rod 5 to change the bending angle of the connection point between the test wire 2 and the connection port 3, the flat-pushing assembly drives the extrusion table 14 to move. When the extrusion table 14 moves, the inner slider one 13 and the slide rod 15 will slide along the inner walls of the extrusion table 14 and the inclined chute 16 respectively. When the inner slider one 13 slides, through the arranged slide rod 15 and extrusion table 14, its longitudinal height will gradually increase, and the longitudinal height of the collar 4 will increase. The collar 4 will drive the longitudinal position of the center point of the test wire 2 to increase, so that the bending angle of the connection point between the test wire 2 and the connection port 3 increases, and the two clamping tables 8 move closer to each other. The distance between the two connection ports 3 becomes smaller and the test wire 2 always remains in a straight state. Thus, when the collar 4 rotates around the central shaft rod 5 as the central axis, after the test wire 2 and the connection port 3 maintain the bending angle, the test wire 2 can also rotate around the central shaft rod 5 as the central axis, so as to detect the damage condition of the test wire 2 and the connection port 3 when being torsionally stressed after bending.

[0032] As Figures 4 to 5 shown, a fixed seat 18 is fixedly connected to the outer wall of the central shaft rod 5. Inner chutes 19 are opened on multiple sides of the fixed seat 18. One side of each extrusion table 14 is fixedly connected with an inner slider two 17. The multiple inner sliders two 17 are respectively slidably connected with the inner walls of the inner chutes 19 and are mutually adapted.

[0033] During operation: When the extrusion table 14 moves horizontally through the flat-pushing assembly, the inner slider one 13 connected to the bottom of the collar 4 will slide along the inclined surface of the extrusion table 14, so as to adjust the distance between the collar 4 and the central shaft rod 5 and change the bending angle of the connection point between the test wire 2 and the connection port 3. And under the action of the flat-pushing assembly, the extrusion table 14 will make the inner slider two 17 slide along the inner wall of the inner chute 19. When the position of the collar 4 is adjusted, when the central shaft rod 5 rotates, it will drive the extrusion table 14 to rotate through the fixed seat 18, and the extrusion table 14 will drive the collar 4 to rotate, so as to perform a bending test on the connection point between the test wire 2 and the connection port 3, and multiple test wires 2 can be bent tested simultaneously. The precise adjustment ability makes the test more flexible, and different bending conditions at different angles can be simulated, improving the comprehensiveness and accuracy of the test.

[0034] As Figures 5 to 8 shown, the flat-pushing assembly includes a rotating disk 22. The rotating disk 22 is fixedly installed on the outer wall of the central shaft rod 5. One side of the rotating disk 22 is fixedly connected with a plurality of telescopic rods one 21. One ends of the plurality of telescopic rods one 21 are fixedly connected with a connecting rod 20. One ends of the plurality of connecting rods 20 far from the telescopic rods one 21 are fixedly connected with one side of the extrusion table 14.

[0035] During operation: By controlling the telescopic length of the first telescopic rod 21, the connecting rod 20 is advanced forward to squeeze the table 14 to move different distances. The distance that the inner first slider 13 slides on the inner wall of the extrusion table 14 is adjusted by the distance that the extrusion table 14 moves, so as to adjust the height of the longitudinal upward movement of the collar 4. When the central shaft rod 5 rotates, the extrusion table 14 can also be driven to rotate through the rotating disc 22 and the connecting rod 20. The extrusion table 14 drives the collar 4 to rotate around the central shaft rod 5 as the center point, further improving the rotation of the collar 4 driving the test wire 2 to rotate around the central shaft rod 5, and testing the bending resistance of the connection point between the test wire 2 and the wiring port 3.

[0036] [[ID=३]]As Figures 9 to 10 shown, movable bases 23 are fixedly connected to the bottoms of both clamping tables 8. Bottom sliders 24 are fixedly connected to the bottoms of the movable bases 23. The bottom sliders 24 are slidably connected to the inner wall of the test bench 1. One end of the bottom slider 24 is fixedly connected to a return spring 25. The end of the return spring २५ away from the bottom slider २४ is fixedly connected to the inner wall surface of the test bench 1.

[0037] During operation: When the collar 4 is adjusted, the bending angle of the connection point between the test wire 2 and the wiring port 3 becomes larger. At this time, the test wire 2 pulls the clamping table 8 and the movable base 23 to slide on the top of the test bench 1, so that the distance between the two clamping tables 8 is reduced to adapt to the situation where the distance between the two wiring ports 3 is reduced. And through the arranged return spring 25, when the bending angle of the connection point between the test wire 2 and the wiring port 3 is reduced, the distance between the two clamping tables 8 is increased to adapt to the situation where the distance between the two wiring ports 3 is increased, facilitating the test wire 2 to always maintain a straight state.

[0038] As Figures 9 to 10 shown, damping rods 28 are fixedly connected to both sides of the movable base 23. Positioning blocks 27 are fixedly connected to one ends of the damping rods 28. A positioning component is arranged on one side of the positioning block 27 to fix the position of the movable base 23 after moving.

[0039] During operation: When the distance between the two movable bases 23 drives the two clamping tables 8 to change, the positioning component fixes the position of the movable base 23 after moving through the positioning block 27, so that when the test wire 2 rotates around the central shaft rod 5 as the center axis, the positions of the two clamping tables 8 are limited, and the two clamping tables 8 will not shake due to external force or vibration, eliminating the test error caused by shaking.

[0040] As Figures 9 to 10As shown in the figure, the clamping component includes a clamping plate base 29. The clamping plate base 29 is provided with a plurality of clamping slots, and the outer shape of the clamping slots is adapted to the outer shape of the clamping block 27. A spring 26 is arranged outside the damping rod 28. One end of the spring 26 is fixedly connected to one side of the movable base 23, and the end of the spring 26 far from the movable base 23 is fixedly connected to one side of the clamping block 27.

[0041] During operation: Adjusting the position of the adjusting collar 4 will change the distance between the two clamping platforms 8. When the clamping platform 8 is moving, the clamping block 27 will squeeze the spring 26, and the clamping block 27 will move along the clamping slot of the clamping plate base 29. After the position of the collar 4 is adjusted, the clamping block 27 will enter any one of the clamping slots for clamping. When the collar 4 drives the test wire 2 to rotate along the axis of the central shaft rod 5, the clamping block 27 will be stuck in the clamping slot. Therefore, the distance between the two clamping platforms 8 remains stationary, and the two clamping platforms 8 will not shake due to external force or vibration.

[0042] As Figures 9 to 10 shown in the figure, a connecting plate 30 is fixedly connected between every two clamping plate bases 29. The top of the test bench 1 is symmetrically and fixedly connected with second telescopic rods 31, and one ends of the two second telescopic rods 31 are respectively fixedly connected to the center points of the connecting plate 30.

[0043] During operation: After the bending test between the test wire 2 and the wiring port 3 is completed, start the second telescopic rod 31 to push the two groups of clamping plate bases 29 to both sides, so that the clamping block 27 is no longer located in any one of the clamping slots of the clamping plate base 29. After adjusting the position of the collar 4, after the two clamping platforms 8 return to their original positions, the test wire 2 and the wiring port 3 can be removed.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire bending testing machine, comprising a test bench, characterized in that: Above the test bench, there are multiple test wires. Both ends of the multiple test wires are fixedly connected with wiring terminals. The outer center position of each test wire is sleeved with a collar. At the center position between the multiple collars, there is a central shaft rod. The central shaft rod is located at the center position between the multiple test wires. One end of the central shaft rod is fixedly connected with a motor. The motor is fixedly installed on the top of the test bench. The end of the central shaft rod away from the motor is rotatably connected with a clamping rod seat. The clamping rod seat is fixedly installed on the top of the test bench. Clamping components are arranged outside the two groups of wiring terminals. The clamping components are used to clamp and fix the multiple wiring terminals of the two groups. An expansion and displacement component is arranged outside the collar. The expansion and displacement component adjusts the distance between the multiple collars and the central shaft rod.

2. The wire bending testing machine according to claim 1, characterized in that: On the top of the test bench, clamping platforms are symmetrically and slidably arranged. The central shaft rod passes through the central positions of the two clamping platforms and is rotatably connected with the inner wall of the center of the clamping platforms. Multiple grooves are arranged on the inner walls of the two clamping platforms. The two groups of wiring terminals are respectively located inside the multiple grooves.

3. The wire bending testing machine according to claim 2, wherein: The clamping component includes multiple clamping pads. Each clamping pad is slidably connected with the multiple grooves of the clamping platform. Multiple fixing pieces are fixedly connected to the tops of the clamping platforms. Threaded rods are threadedly connected to the inner walls of the fixing pieces. The bottom of the threaded rod is fixedly connected with the top of the clamping pad. The top of the threaded rod is fixedly connected with a knob.

4. The wire bending testing machine according to claim 3, characterized in that: The expansion and displacement component includes multiple extrusion platforms. The multiple extrusion platforms are all in an inclined state and an inner slider one is slidably connected to the inner wall. The top of each inner slider one is respectively fixedly connected with the bottom of the collar. Slide rods are fixedly connected to both sides of the inner slider one. Inclined sliding grooves are arranged on the side walls of the extrusion platforms. The slide rods are slidably connected with and adapted to the inclined sliding grooves. At one end of the multiple extrusion platforms, there is a flat push component for simultaneously translating the multiple extrusion platforms.

5. The wire bending testing machine according to claim 4, characterized in that: A fixed seat is fixedly connected to the outer wall of the central shaft rod. Inner sliding grooves are arranged on multiple side surfaces of the fixed seat. An inner slider two is fixedly connected to one side of each extrusion platform. The multiple inner slider twos are respectively slidably connected to and adapted to the inner walls of the inner sliding grooves.

6. The wire bending testing machine according to claim 5, wherein: The flat push component includes a rotating disk. The rotating disk is fixedly installed on the outer wall of the central shaft rod. Multiple telescopic rods one are fixedly connected to one side of the rotating disk. One end of each of the multiple telescopic rods one is fixedly connected with a connecting rod. The end of the multiple connecting rods away from the telescopic rods one is fixedly connected with one side of the extrusion platform.

7. A wire bending testing machine according to claim 6, characterized in that: Moving bases are fixedly connected to the bottoms of the two clamping platforms. Bottom sliders are fixedly connected to the bottoms of the moving bases. The bottom sliders are slidably connected to the inner wall of the test bench. One end of the bottom slider is fixedly connected with a return spring. The end of the return spring away from the bottom slider is fixedly connected to the inner wall surface of the test bench.

8. The wire bending testing machine according to claim 7, characterized in that: Damping rods are fixedly connected to both sides of the moving base. A clamping block is fixedly connected to one end of each damping rod. A clamping component is arranged on one side of the clamping block. The clamping component fixes the position of the moving base after movement.

9. The wire bending testing machine according to claim 8, wherein: The clamping component includes a clamping plate seat. The clamping plate seat is provided with multiple clamping grooves. The shape of the clamping grooves is adapted to the shape of the clamping block. A spring is arranged outside the damping rod. One end of the spring is fixedly connected to one side of the moving base. The end of the spring away from the moving base is fixedly connected to one side of the clamping block.

10. A wire bending testing machine according to claim 9, characterized in that: A connecting plate is fixedly connected between every two pallet seats, and two second telescopic rods are symmetrically and fixedly connected to the top of the test bench. One ends of the two second telescopic rods are respectively fixedly connected to the center points of the connecting plate.

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