Device and method for detecting toughness of flexible circuit board

Abstract

The invention belongs to the technical field of circuit board detection, particularly relates to a device for detecting the toughness of a flexible circuit board and a method thereof, and provides the following scheme aiming at the problem that the toughness detection data of the flexible circuit board cannot be accurately obtained and wrong judgment is caused: the device comprises a bottom table, and two symmetrical hanging brackets are fixedly connected to the upper side of the bottom table; the same transverse shaft is fixedly connected between the two hanging brackets; the retention detection frame is rotationally connected outside the transverse shaft, and one end, far away from the transverse shaft, of the fixed connection frame is fixedly connected with a retention seat; the movable position detection frame is located outside the transverse shaft and rotationally connected. According to the device and the method for detecting the toughness of the flexible circuit board, four detection modes are provided, different states of the flexible circuit board in actual use can be simulated, so that targeted toughness detection is carried out, and a relatively large error of a toughness detection result caused by limitation of the detection state of the circuit board is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board detection, and in particular to a device and method for detecting the toughness of a flexible circuit board. Background Art

[0002] Flexible circuit boards, also known as soft boards, are printed circuits made of flexible insulating substrates. They have excellent electrical properties and can meet the design needs of smaller and higher-density installations. Flexible circuit boards are made of new materials and require multiple tests before leaving the factory and installation, including toughness tests.

[0003] Flexible circuit boards are widely used. Due to the complexity of their usage, there are currently large errors in the toughness testing of flexible circuit boards. It is impossible to accurately obtain the toughness data of flexible circuit boards under different conditions, resulting in inaccurate data and erroneous judgments that affect equipment quality. Summary of the Invention

[0004] The present invention discloses a device and method for detecting the toughness of a flexible circuit board, aiming to solve the technical problem in the background art that the toughness detection data of the flexible circuit board cannot be accurately obtained, resulting in erroneous judgment.

[0005] The present invention provides a device for testing the toughness of a flexible circuit board, comprising: The bottom platform has two symmetrical hangers fixedly connected to its upper side, and the two hangers are fixedly connected to the same horizontal axis; The retention detection frame is located outside the horizontal axis and is rotatably connected. The end of the fixed connection frame away from the horizontal axis is fixedly connected to the retention seat. The active position detection frame is located outside the horizontal axis and is rotatably connected. The active position detection frame is fixedly connected to the active position seat at one end away from the horizontal axis. The fixed detection frame and the active position detection frame can rotate around the horizontal axis, and there is an alternating overlapping area between the two during the rotation process. Two pressing and mounting components are respectively arranged on the retaining seat and the movable seat, and the pressing and mounting components are used to install and fix the flexible circuit board; A detection module is provided on the retaining seat and the movable seat. The detection module is used for the actual operation of the flexible circuit board toughness detection and provides tension and feedback data; The back frame is fixedly connected to the upper side of the base, and a flip-type position-changing component is provided on the back frame, and the flip-type position-changing component is used to change the position and state of the fixed position detection frame and the movable position detection frame; The auxiliary module is arranged above the base, and the auxiliary module is used to change the angles of the active position detection frame and the fixed position detection frame.

[0006] In a preferred embodiment, the press-holding installation assembly includes: A bottom plate, slidably connected to the surface of the retaining seat or the movable seat; The pressure plate is located above the base plate. Two symmetrical pressure pieces are fixedly connected to the lower side of the pressure plate. The pressure pieces are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is provided on the pressure plate. An analyzer is fixedly connected inside the rectangular mounting hole. A touch strip is provided on the lower side of the analyzer. The touch strip is in contact with the flexible circuit board. The analyzer is used to detect whether the function of the flexible circuit board is normal.

[0007] In a preferred embodiment, the press-holding installation assembly further comprises: Four deflection blocks are rotatably connected to both sides of the pressure plate and are symmetrically distributed in pairs. Two symmetrical grooves are provided on the bottom plate. The lower ends of the four deflection blocks are located in the grooves of the bottom plate and are rotatably connected through bearings. The deflection blocks are used to change the position of the pressure plate to achieve lifting and pressing of the pressure plate; The pressure plate is fixedly connected to two symmetrical fixing plates, each of which is provided with a through hole, and the bottom plate is fixedly connected to two symmetrical bosses, each of which is provided with a threaded hole; Two fixing knobs are symmetrically distributed above the base plate. The fixing knobs pass through the through holes of the fixing plate and are rotatably connected in the threaded holes of the boss. The fixing knobs are used to fix the pressure plate and the base plate. The degree of pressure of the pressure plate on the flexible circuit board is adjusted by changing the tightening depth of the fixing knobs.

[0008] In a preferred embodiment, the detection module includes: A push plate is slidably connected to the surface of the retaining seat. Two symmetrical return springs are fixedly connected between the push plate and the retaining seat. The push plate cooperates with the return springs to buffer the displacement of the bottom plate above the retaining seat. The pressure sensor is fixedly connected between the push plate and the retaining seat and is used to provide real-time feedback on the force data of the bottom plate above the retaining seat; The bottom attached sliding seat is fixedly connected to the lower side of the bottom plate on the surface of the movable seat, and a threaded hole is opened on the bottom attached sliding seat; The detection motor is fixedly connected to the movable seat. The output shaft of the detection motor is connected to the detection screw through a coupling. The detection screw passes through the threaded hole of the bottom attached slide. The detection screw and the bottom attached slide are rotationally connected through the inner wall thread. The detection motor drives the detection screw to rotate to drive the base plate to move on the movable seat.

[0009] In a preferred embodiment, the flip-type transposition assembly includes: Two flip frames are rotatably connected to the back frame through bearings. Two symmetrical flip motors are fixedly connected to the back frame. The two flip motors are synchronous motors. The output shafts of the flip motors are fixedly connected to the flip frames. The flip motors are used to synchronously drive the flip frames to rotate. The top seat is fixedly connected to the front end of the turnover frame, and a mounting hole is opened on the top seat. A push-type hydraulic cylinder is fixedly connected inside the mounting hole; The slide is slidably connected to the top seat, and the telescopic end of the push-type hydraulic cylinder is fixedly connected to the slide, and the push-type hydraulic cylinder is used to push the slide to make it slide on the top seat; The rotating shaft is fixedly connected to the protrusion on the slide, and the outside of the rotating shaft is rotatably connected to a roller through a bearing. The roller is used to contact the fixed position detection frame or the movable position detection frame and provide thrust to change its position.

[0010] In a preferred solution, a surface platform is provided on the base platform, a push-type sliding groove is provided on the surface platform, and a sliding lock assembly is provided on the base platform.

[0011] In a preferred embodiment, the sliding lock assembly includes: The retention front frame is fixedly connected to the upper side of the base platform and is located next to the retention detection frame. A push-type slide is provided on the upper side of the retention front frame. The movable front frame is fixedly connected to the upper side of the base platform and is located next to the movable detection frame. A push-type slide is provided on the upper side of the movable front frame. Three locking blocks are respectively slidably connected to the push-type slide grooves of the table, the fixed front frame and the movable front frame. After receiving the thrust, the locking blocks move to partially clamp the fixed seat or the movable seat, so as to fix the position of the fixed seat or the movable seat; The suspension plate is fixedly connected to the upper side of the base platform and is located below the retention detection frame, and is used to assist in supporting the retention detection frame.

[0012] In a preferred solution, a pulling frame is fixedly connected to one end of the active position seat away from the active position detection frame. The pulling frame is two rectangular rods, and each of the two rectangular rods is provided with a sliding groove with a single side open.

[0013] In a preferred embodiment, the auxiliary module includes: The auxiliary seat is fixedly connected to the upper side of the base, and two symmetrical vertical poles are fixedly connected to the upper side of the auxiliary seat; An L-shaped lifting plate is slidably connected to the two vertical poles, and an electric push rod is fixedly connected to the L-shaped lifting plate; The lifting hydraulic cylinder has a lower end fixedly connected to the upper side of the auxiliary seat, and a telescopic end fixedly connected to the L-shaped lifting plate upward, which is used to push the L-shaped lifting plate to make it move up and down; The ram is fixedly connected to the front end of the electric push rod. A through hole is provided on the ram. The inside of the through hole is fixedly connected to a wheel axle. Both ends of the wheel axle are rotatably connected to rollers through bearings. The two rollers are movably connected to the two rectangular rod slides of the pulling frame.

[0014] A method for testing the toughness of a flexible circuit board, using the device for testing the toughness of a flexible circuit board as described above, comprises the following steps: Step 1: Use two pressing and mounting components to fix the flexible circuit board from both ends and adjust the path state of the flexible circuit board; Step 2: Flatness test state: Start the flip-type displacement assembly to change the position of the fixed position detection frame and the movable position detection frame so that the flexible circuit board is in a horizontal state, then use the sliding lock assembly to fix the position of the two detection frames, and then use the detection assembly to perform toughness test; Step 3, semicircle detection state: start the flip-type position-changing assembly again to reset the two detection frames, and use the sliding lock assembly to fix the position of the fixed detection frame, and use the auxiliary module to fix the position of the movable detection frame, and then use the detection assembly to perform the detection; Step 4: Multiple-amplitude bending test state: Use the auxiliary module to change the position of the active position detection frame to make the flexible circuit board bend in multiple amplitudes, and use the detection component to perform detection; Step 5: Dynamic bending detection state: Use the auxiliary module to drive the active position detection frame into the dynamic bending state, and use the detection component to detect the toughness of the flexible circuit board under dynamic folding.

[0015] From the above, it can be seen that the device for testing the toughness of a flexible circuit board provided by the present invention has four detection modes, which can simulate the different states of the flexible circuit board in actual use, so as to perform targeted toughness testing, effectively avoiding large errors in the toughness test results due to the limitations of the circuit board detection state. At the same time, the flexible circuit board can realize four modes of testing in one installation, effectively improving the overall efficiency of the flexible circuit board toughness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 2 This is a structural schematic diagram of a device for testing the toughness of a flexible circuit board in a flat testing state, as proposed by the present invention; Figure 3 This is a structural schematic diagram of a device for testing the toughness of a flexible circuit board in a bending testing state, as proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a retention detection frame and a retention seat of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 5 This is a schematic diagram of the structure of the movable position detection frame and movable position seat of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 6 This is a partial cross-sectional structural diagram of a retaining seat of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 7This is a schematic diagram of the structure of a press-holding installation assembly for a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 8 This is a schematic structural diagram of a fixed position detection frame and a movable position detection frame of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 9 This is a schematic diagram of the structure of a flip-type transposition component of a device for testing the toughness of a flexible circuit board proposed by the present invention; Figure 10 This is a schematic diagram of the auxiliary module structure of a device for testing the toughness of a flexible circuit board proposed by the present invention.

[0017] In the figure: 1. Base; 2. Hanger; 3. Horizontal axis; 4. Fixed position detection frame; 5. Active position detection frame; 6. Fixed position seat; 7. Active position seat; 8. Pressing and mounting assembly; 801. Base plate; 802. Pressing plate; 803. Pressing piece; 804. Analyzer; 805. Contact strip; 806. Deflection block; 807. Fixed plate; 808. Boss; 809. Fixed knob; 9. Detection module; 901. Push plate; 902. Return spring; 903. Pressure sensor; 904. Bottom-attached slide; 905. Detection motor; 906. Detection screw; 10. Back frame; 11. Flip-type transposition assembly; 110 1. Flip frame; 1102. Flip motor; 1103. Top seat; 1104. Slide; 1105. Push hydraulic cylinder; 1106. Rotating shaft; 1107. Roller; 12. Surface table; 13. Sliding lock assembly; 1301. Fixed front frame; 1302. Movable front frame; 1303. Locking block; 1304. Suspension plate; 14. Pulling frame; 15. Auxiliary module; 1501. Auxiliary seat; 1502. Vertical pole; 1503. L-shaped lifting plate; 1504. Lifting hydraulic cylinder; 1505. Electric push rod; 1506. Top head; 1507. Axle; 1508. Roller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] The present invention discloses a device for detecting the toughness of a flexible circuit board, which is mainly used in scenarios where the toughness detection data of the flexible circuit board cannot be accurately obtained, resulting in erroneous judgments.

[0020] Reference Figures 1-10 , a device for testing the toughness of a flexible circuit board, comprising: A base 1, with two symmetrical hangers 2 fixedly connected to its upper side, and a common horizontal axis 3 fixedly connected between the two hangers 2; The fixed detection frame 4 is located outside the horizontal axis 3 and is rotatably connected. The end of the fixed connection frame away from the horizontal axis 3 is fixedly connected to the retaining seat 6; The active position detection frame 5 is located outside the horizontal axis 3 and is rotatably connected. The end of the active position detection frame 5 away from the horizontal axis 3 is fixedly connected to the active position seat 7. The fixed detection frame and the active position detection frame 5 can rotate around the horizontal axis 3. During the rotation process, there is an alternating overlapping area between the two. Two pressing and mounting components 8 are respectively provided on the retaining seat 6 and the movable seat 7. The pressing and mounting components 8 are used to install and fix the flexible circuit board; The detection module 9 is provided on the retaining seat 6 and the movable seat 7. The detection module 9 is used for the actual operation of the flexible circuit board toughness detection and provides tension and feedback data; The back frame 10 is fixedly connected to the upper side of the base 1. The back frame 10 is provided with a flip-type position-changing component 11, which is used to change the position and state of the fixed position detection frame 4 and the movable position detection frame 5; The auxiliary module 15 is disposed above the base 1 and is used to change the angles of the active position detection frame 5 and the fixed position detection frame 4 .

[0021] The device is equipped with four detection modes, which can simulate the different states of the flexible circuit board in actual use, so as to carry out targeted toughness testing, effectively avoiding large errors in the toughness test results due to the limitations of the circuit board detection state. At the same time, the flexible circuit board can realize four modes of detection in one installation, effectively improving the overall efficiency of the flexible circuit board toughness detection.

[0022] Reference Figure 4 、 Figure 5 、 Figure 6 and Figure 7 In a preferred embodiment, the press-holding mounting assembly 8 includes: The bottom plate 801 is slidably connected to the surface of the retaining seat 6 or the movable seat 7; The pressure plate 802 is located above the base plate 801. Two symmetrical pressure pieces 803 are fixedly connected to the lower side of the pressure plate 802. The pressure pieces 803 are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is provided on the pressure plate 802. An analyzer 804 is fixedly connected inside the rectangular mounting hole. A contact strip 805 is provided on the lower side of the analyzer 804. The contact strip 805 is in contact with the flexible circuit board. The analyzer 804 is used to detect whether the function of the flexible circuit board is normal.

[0023] In the present invention, the pressing and mounting assembly 8 further comprises: Four deflection blocks 806 are rotatably connected to both sides of the pressure plate 802 and are symmetrically distributed in pairs. Two symmetrical grooves are provided on the bottom plate 801. The lower ends of the four deflection blocks 806 are located in the grooves of the bottom plate 801 and are rotatably connected via bearings. The deflection blocks 806 are used to change the position of the pressure plate 802 to achieve lifting and pressing of the pressure plate 802; The pressure plate 802 is fixedly connected to two symmetrical fixing plates 807, each of which has a through hole. The bottom plate 801 is fixedly connected to two symmetrical bosses 808, each of which has a threaded hole. Two fixing knobs 809 are symmetrically distributed above the base plate 801. The fixing knobs 809 pass through the through holes of the fixing plate 807 and are rotatably connected in the threaded holes of the boss 808. The fixing knobs 809 are used to fix the pressure plate 802 and the base plate 801. The degree of pressure of the pressure plate 802 on the flexible circuit board is adjusted by changing the tightening depth of the fixing knobs 809.

[0024] The pressing and holding assembly 8 is suitable for the installation and fixing of the flexible circuit board. That is, the pressing and holding assembly 8 uses the clamping method of the pressing plate 802 and the bottom plate 801 to achieve the installation and fixing of the flexible circuit board. This method can ensure stable installation while meeting the effect of rapid disassembly and assembly, thereby improving the overall efficiency of flexible circuit board testing. The pressing piece 803 is made of rubber material, which can provide insulation and cushioning protection, and improve the fixing effect, thus preventing the flexible circuit board from being damaged due to excessive pressure. It should be noted that the analyzer 804 can form a path after the flexible circuit board is installed, so as to monitor in real time whether the function of the flexible circuit board is abnormal, thereby improving the real-time performance and accuracy of the toughness test results.

[0025] Reference Figure 4 、 Figure 5 and Figure 6 In a preferred embodiment, the detection module 9 includes: The push plate 901 is slidably connected to the surface of the retaining seat 6. Two symmetrical return springs 902 are fixedly connected between the push plate 901 and the retaining seat 6. The push plate 901 cooperates with the return springs 902 to buffer the displacement of the bottom plate 801 above the retaining seat 6; The pressure sensor 903 is fixedly connected between the push plate 901 and the retaining seat 6 and is used to provide real-time feedback of the force data of the bottom plate 801 above the retaining seat 6; The bottom attached slide 904 is fixedly connected to the lower side of the bottom plate 801 on the surface of the movable seat 7, and a threaded hole is opened on the bottom attached slide 904; The detection motor 905 is fixedly connected to the movable seat 7. The output shaft of the detection motor 905 is connected to the detection screw 906 through a coupling. The detection screw 906 passes through the threaded hole of the bottom attached slide 904. The detection screw 906 and the bottom attached slide 904 are rotatably connected through the inner wall thread. The detection motor 905 drives the detection screw 906 to rotate to drive the base plate 801 to move on the movable seat 7.

[0026] The detection component is suitable for testing the toughness of the flexible circuit board. That is, the detection component achieves the pulling of the flexible circuit board by changing the position of the bottom plate 801 above the movable seat 7, and obtains the toughness data through the real-time feedback of the pressure sensor 903, ensuring the real-time and accuracy of the data. During the testing process, the push plate 901 and the return spring 902 can buffer the displacement of the bottom plate 801 on the retaining seat 6, thereby achieving the purpose of buffering the deformation of the flexible circuit board itself, avoiding the direct tensile force acting on the circuit board, causing the circuit board to break and be damaged, thereby affecting the accuracy of the toughness test results.

[0027] Reference Figure 2 、 Figure 4 、 Figure 8 and Figure 9 In a preferred embodiment, the flip-type transposition assembly 11 includes: Two flip frames 1101 are rotatably connected to the back frame 10 via bearings. Two symmetrical flip motors 1102 are fixedly connected to the back frame 10. The two flip motors 1102 are synchronous motors. The output shafts of the flip motors 1102 are fixedly connected to the flip frames 1101. The flip motors 1102 are used to synchronously drive the flip frames 1101 to rotate. The top seat 1103 is fixedly connected to the front end of the turning frame 1101. The top seat 1103 is provided with a mounting hole, and a push-type hydraulic cylinder 1105 is fixedly connected inside the mounting hole. The slide 1104 is slidably connected to the top seat 1103. The telescopic end of the push-type hydraulic cylinder 1105 is fixedly connected to the slide 1104. The push-type hydraulic cylinder 1105 is used to push the slide 1104 to slide on the top seat 1103. The rotating shaft 1106 is fixedly connected to the protrusion on the slide 1104. The outside of the rotating shaft 1106 is rotatably connected to the roller 1107 through a bearing. The roller 1107 is used to contact the fixed position detection frame 4 or the movable position detection frame 5 and provide thrust to change its position.

[0028] The flip-type transposition component 11 is suitable for changing the positions of the two detection frames, that is, the flip-type transposition component 11 uses two synchronously rotating flip frames 1101 to change the positions of the two detection frames, so as to facilitate the switching of different detection states of the flexible circuit board.

[0029] Reference Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9 In a preferred embodiment, a surface platform 12 is provided on the base platform 1 , a push-type slide groove is provided on the surface platform 12 , and a sliding lock assembly 13 is provided on the base platform 1 .

[0030] In the present invention, the sliding lock assembly 13 includes: The front retaining frame 1301 is fixedly connected to the upper side of the base 1 and is located next to the retaining detection frame 4. A push-type slide is provided on the upper side of the front retaining frame 1301; The movable front frame 1302 is fixedly connected to the upper side of the base 1 and is located next to the movable detection frame 5. A push-type slide is provided on the upper side of the movable front frame 1302; Three locking blocks 1303 are slidably connected to the push-type slides of the table 12, the fixed front frame 1301 and the movable front frame 1302 respectively. When the locking blocks 1303 are pushed, they move to partially clamp the fixed seat 6 or the movable seat 7, thereby fixing the position of the fixed seat 6 or the movable seat 7; The suspension plate 1304 is fixedly connected to the upper side of the base 1 and is located below the retention detection frame 4, and is used to auxiliary support the retention detection frame 4.

[0031] The sliding lock assembly 13 is suitable for the auxiliary fixing link of the two detection frames under different detection states, that is, the sliding lock assembly 13 can clamp and fix the retaining seat 6 and the movable seat 7 in the flat detection state, thereby realizing the fixation of the two detection frames; it can fix the retaining seat 6 in other detection states to realize the fixation of the fixed detection frame 4. The setting of the sliding lock assembly 13 can effectively ensure the stability of the detection frame under different detection states, and avoid the inability to detect or increase the detection error due to the force offset of the detection frame.

[0032] Reference Figure 3 、 Figure 5 and Figure 10 In a preferred embodiment, the end of the active seat 7 away from the active position detection frame 5 is fixedly connected to the pulling frame 14, and the pulling frame 14 is two rectangular rods, and both rectangular rods are provided with a single-side open slide.

[0033] In the present invention, the auxiliary module 15 includes: The auxiliary seat 1501 is fixedly connected to the upper side of the base 1, and two symmetrical vertical poles 1502 are fixedly connected to the upper side of the auxiliary seat 1501; An L-shaped lifting plate 1503 is slidably connected to the two vertical poles 1502, and an electric push rod 1505 is fixedly connected to the L-shaped lifting plate 1503; The lifting hydraulic cylinder 1504 has a lower end fixedly connected to the upper side of the auxiliary seat 1501, and a telescopic end fixedly connected to the L-shaped lifting plate 1503 upward, and is used to push the L-shaped lifting plate 1503 to make it move up and down; The top head 1506 is fixedly connected to the front end of the electric push rod 1505. A through hole is opened on the top head 1506. The inside of the through hole is fixedly connected to the wheel axle 1507. Both ends of the wheel axle 1507 are rotatably connected to rollers 1508 through bearings. The two rollers 1508 are movably connected to the two rectangular rod slides of the pulling frame 14.

[0034] The auxiliary module 15 is suitable for fixing and changing the position of the active position detection frame 5. That is, the auxiliary module 15 uses the roller 1508 to enter the pulling frame 14 to realize the integrated assembly to change the state of the active position detection frame 5, so that the active position seat 7 has three states: vertical fixation, multi-angle deflection, and dynamic deflection. This realizes the switching detection of different states of the flexible circuit board, effectively simulates the different forms of the flexible circuit board in actual use, achieves comprehensive detection, and avoids the detection limitations that may cause large errors in the toughness test results. The roller 1508 on the axle 1507 moves in the slide groove of the pulling frame 14, which can ensure the smoothness of the active position detection frame 5 when bending.

[0035] A method for testing the toughness of a flexible circuit board, using the device for testing the toughness of a flexible circuit board as described above, comprises the following steps: Step 1: Use two pressure-holding mounting assemblies 8 to secure the flexible circuit board from both ends and test the circuit board's access status (place one end of the flexible circuit board under the pressure plate 802, adjust the position, and push the pressure plate 802 to press the flexible circuit board tightly. Rotate the fixing knob 809 to secure the pressure plate 802 to the base plate 801. Then, secure the other end of the flexible circuit board in the same manner. After completion, use the analyzer 804 to test whether the flexible circuit board is functioning properly). Step 2, flatness detection state: start the flip-type position-changing component 11 to change the position of the fixed position detection frame 4 and the movable position detection frame 5 so that the flexible circuit board is in a horizontal state (start the flip motor 1102 to drive the two flip frames 1101 to rotate synchronously, and the two rollers 1107 will contact the two detection frames and apply thrust during the synchronous lifting process. The two detection frames are flipped and lifted until the fixed seat 6 and the movable seat 7 are in a horizontal position), and then use the sliding buckle locking component 13 to fix the positions of the two detection frames (the fixed seat 6 and the movable seat 7 are placed horizontally After that, the locking blocks 1303 on the fixed front frame 1301 and the movable front frame 1302 are pushed to lock the fixed seat 6 and the movable seat 7 in place). Then, the toughness test is performed using the detection component (the detection motor 905 is started to drive the detection screw 906 to rotate, and the bottom plate 801 on the surface of the movable seat 7 moves away from the fixed seat 6. The flexible circuit board is straightened and pulled to achieve the purpose of toughness testing. During this process, the pressure sensor 903 will provide real-time feedback of the tension data, and the analyzer 804 will provide real-time feedback of the functional status of the flexible circuit board). Step 3, semicircle detection state: start the flip-type transposition component 11 again to reset the two detection frames (start the flip motor 1102 to drive the two flip frames 1101 to rotate synchronously to achieve reset, and the two detection frames are combined into a semicircle), and use the sliding buckle locking component 13 to fix the position of the fixed detection frame 4 (after the fixed detection frame 4 is reset, the suspension plate 1304 supports it from below, and pushes the locking block 1303 on the surface table 12 to lock and fix the fixed seat 6), and use the auxiliary module 15 to fix the position of the movable detection frame 5 (after the movable detection frame 5 is reset, the movable seat 7 is in a vertical downward state, at this time, start the lifting hydraulic cylinder 1504 to extend and drive the L-shaped lifting plate 1503 to move upward, and the two rollers 1508 enter the inside of the slide groove from the single-sided opening of the pulling frame 14, and the movable detection frame 5 is fixed), and then use the detection component to perform detection; Step 4: Multiple-amplitude bending detection state: Use the auxiliary module 15 to change the position of the active position detection frame 5 (adjust the extension length of the electric push rod 1505 according to actual detection requirements. The longer the electric push rod 1505 extends, the greater the bending amplitude of the flexible circuit board, and vice versa), so that the flexible circuit board is bent in multiple amplitudes, and then detected using the detection component; Step 5, dynamic bending detection state: use the auxiliary module 15 to drive the active position detection frame 5 to enter the dynamic bending state (the electric push rod 1505 enters the reciprocating telescopic state, the roller 1508 reciprocates in the slide groove of the pulling frame 14, the active position detection frame 5 performs reciprocating bending, and the flexible circuit board is frequently bent, folded and unfolded), and use the detection component to detect the toughness of the flexible circuit board under dynamic folding (when detecting in this state, the pressure plate 802 on the active position seat 7 needs to be adjusted and fixed, and the position of the pressure plate 802 on the active position seat 7 does not change during dynamic bending).

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for testing the toughness of a flexible circuit board, characterized in that: include: The bottom platform has two symmetrical hangers fixedly connected to its upper side, and the two hangers are fixedly connected to the same horizontal axis; The retention detection frame is located outside the horizontal axis and is rotatably connected. The end of the fixed connection frame away from the horizontal axis is fixedly connected to the retention seat. The active position detection frame is located outside the horizontal axis and is rotatably connected. The active position detection frame is fixedly connected to the active position seat at one end away from the horizontal axis. The fixed detection frame and the active position detection frame can rotate around the horizontal axis, and there is an alternating overlapping area between the two during the rotation process. Two pressing and mounting components are respectively arranged on the retaining seat and the movable seat, and the pressing and mounting components are used to install and fix the flexible circuit board; A detection module is provided on the retaining seat and the movable seat. The detection module is used for the actual operation of the flexible circuit board toughness detection and provides tension and feedback data; The back frame is fixedly connected to the upper side of the base, and a flip-type position-changing component is provided on the back frame, and the flip-type position-changing component is used to change the position and state of the fixed position detection frame and the movable position detection frame; The auxiliary module is arranged above the base, and the auxiliary module is used to change the angles of the active position detection frame and the fixed position detection frame.

2. The device for testing the toughness of a flexible circuit board according to claim 1, characterized in that: The press-holding mounting assembly comprises: A bottom plate, slidably connected to the surface of the retaining seat or the movable seat; The pressure plate is located above the base plate. Two symmetrical pressure pieces are fixedly connected to the lower side of the pressure plate. The pressure pieces are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is provided on the pressure plate. An analyzer is fixedly connected inside the rectangular mounting hole. A touch strip is provided on the lower side of the analyzer. The touch strip is in contact with the flexible circuit board. The analyzer is used to detect whether the function of the flexible circuit board is normal.

3. The device for testing the toughness of a flexible circuit board according to claim 2, characterized in that: The press-holding mounting assembly further comprises: Four deflection blocks are rotatably connected to both sides of the pressure plate and are symmetrically distributed in pairs. Two symmetrical grooves are provided on the bottom plate. The lower ends of the four deflection blocks are located in the grooves of the bottom plate and are rotatably connected through bearings. The deflection blocks are used to change the position of the pressure plate to achieve lifting and pressing of the pressure plate; The pressure plate is fixedly connected to two symmetrical fixing plates, each of which is provided with a through hole, and the bottom plate is fixedly connected to two symmetrical bosses, each of which is provided with a threaded hole; Two fixing knobs are symmetrically distributed above the base plate. The fixing knobs pass through the through holes of the fixing plate and are rotatably connected in the threaded holes of the boss. The fixing knobs are used to fix the pressure plate and the base plate. The degree of pressure of the pressure plate on the flexible circuit board is adjusted by changing the tightening depth of the fixing knobs.

4. The device for testing the toughness of a flexible circuit board according to claim 3, characterized in that: The detection module includes: A push plate is slidably connected to the surface of the retaining seat. Two symmetrical return springs are fixedly connected between the push plate and the retaining seat. The push plate cooperates with the return springs to buffer the displacement of the bottom plate above the retaining seat. The pressure sensor is fixedly connected between the push plate and the retaining seat and is used to provide real-time feedback on the force data of the bottom plate above the retaining seat; The bottom attached sliding seat is fixedly connected to the lower side of the bottom plate on the surface of the movable seat, and a threaded hole is opened on the bottom attached sliding seat; The detection motor is fixedly connected to the movable seat. The output shaft of the detection motor is connected to the detection screw through a coupling. The detection screw passes through the threaded hole of the bottom attached slide. The detection screw and the bottom attached slide are rotationally connected through the inner wall thread. The detection motor drives the detection screw to rotate to drive the base plate to move on the movable seat.

5. The device for testing the toughness of a flexible circuit board according to claim 4, characterized in that: The flip-type transposition assembly comprises: Two flip frames are rotatably connected to the back frame through bearings. Two symmetrical flip motors are fixedly connected to the back frame. The two flip motors are synchronous motors. The output shafts of the flip motors are fixedly connected to the flip frames. The flip motors are used to synchronously drive the flip frames to rotate. The top seat is fixedly connected to the front end of the turnover frame, and a mounting hole is opened on the top seat. A push-type hydraulic cylinder is fixedly connected inside the mounting hole; The slide is slidably connected to the top seat, and the telescopic end of the push-type hydraulic cylinder is fixedly connected to the slide, and the push-type hydraulic cylinder is used to push the slide to make it slide on the top seat; The rotating shaft is fixedly connected to the protrusion on the slide, and the outside of the rotating shaft is rotatably connected to a roller through a bearing. The roller is used to contact the fixed position detection frame or the movable position detection frame and provide thrust to change its position.

6. The device for testing the toughness of a flexible circuit board according to claim 5, characterized in that: The base is provided with a surface platform, a push-type sliding groove is provided on the surface platform, and a sliding buckle locking component is provided on the base.

7. The device for testing the toughness of a flexible circuit board according to claim 6, characterized in that: The sliding lock assembly includes: The retention front frame is fixedly connected to the upper side of the base platform and is located next to the retention detection frame. A push-type slide is provided on the upper side of the retention front frame. The movable front frame is fixedly connected to the upper side of the base platform and is located next to the movable detection frame. A push-type slide is provided on the upper side of the movable front frame. Three locking blocks are respectively slidably connected to the push-type slide grooves of the table, the fixed front frame and the movable front frame. After receiving the thrust, the locking blocks move to partially clamp the fixed seat or the movable seat, so as to fix the position of the fixed seat or the movable seat; The suspension plate is fixedly connected to the upper side of the base platform and is located below the retention detection frame, and is used for auxiliary support of the retention detection frame.

8. The device for testing the toughness of a flexible circuit board according to claim 7, characterized in that: One end of the active position seat away from the active position detection frame is fixedly connected with a pulling frame, and the pulling frame is two rectangular rods, and the two rectangular rods are both provided with a sliding groove with a single side open.

9. The device for testing the toughness of a flexible circuit board according to claim 8, characterized in that: The auxiliary module includes: The auxiliary seat is fixedly connected to the upper side of the base, and two symmetrical vertical poles are fixedly connected to the upper side of the auxiliary seat; An L-shaped lifting plate is slidably connected to the two vertical poles, and an electric push rod is fixedly connected to the L-shaped lifting plate; The lifting hydraulic cylinder has a lower end fixedly connected to the upper side of the auxiliary seat, and a telescopic end fixedly connected to the L-shaped lifting plate upward, which is used to push the L-shaped lifting plate to make it move up and down; The ram is fixedly connected to the front end of the electric push rod. A through hole is provided on the ram. The inside of the through hole is fixedly connected to a wheel axle. Both ends of the wheel axle are rotatably connected to rollers through bearings. The two rollers are movably connected to the two rectangular rod slides of the pulling frame.

10. A method for testing the toughness of a flexible circuit board, using the device for testing the toughness of a flexible circuit board according to claim 9, characterized in that: The steps include: Step 1: Use two pressing and mounting components to fix the flexible circuit board from both ends and adjust the path state of the flexible circuit board; Step 2: Flatness test state: Start the flip-type displacement assembly to change the position of the fixed position detection frame and the movable position detection frame so that the flexible circuit board is in a horizontal state, then use the sliding lock assembly to fix the position of the two detection frames, and then use the detection assembly to perform toughness test; Step 3, semicircle detection state: start the flip-type position-changing assembly again to reset the two detection frames, and use the sliding lock assembly to fix the position of the fixed detection frame, and use the auxiliary module to fix the position of the movable detection frame, and then use the detection assembly to perform the detection; Step 4: Multiple-amplitude bending test state: Use the auxiliary module to change the position of the active position detection frame to make the flexible circuit board bend in multiple amplitudes, and use the detection component to perform detection; Step 5: Dynamic bending detection state: Use the auxiliary module to drive the active position detection frame into the dynamic bending state, and use the detection component to detect the toughness of the flexible circuit board under dynamic folding.

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