A device for detecting the flexibility of a flexible circuit board and a method thereof

Abstract

The application belongs to the technical field of circuit board detection, and particularly relates to a device and method for flexibility detection of a flexible circuit board. At present, the flexibility detection data of the flexible circuit board cannot be accurately obtained, resulting in incorrect determination. The following scheme is proposed, which comprises a bottom table, the upper side of the bottom table is fixedly connected with two symmetrical hangers, the two hangers are fixedly connected with the same horizontal shaft; a fixing detection frame is rotatably connected to the outside of the horizontal shaft, and the end of the fixed connection frame away from the horizontal shaft is fixedly connected with a fixing seat; and a movable detection frame is rotatably connected to the outside of the horizontal shaft. The device and method for flexibility detection of the flexible circuit board disclosed by the application have four detection modes, can simulate different states of the flexible circuit board in actual use, and thus can perform targeted flexibility detection, so that the large error of the flexibility detection result caused by the limitation of the circuit board detection state is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of circuit board testing technology, and in particular to a device and method for testing the toughness of flexible circuit boards. Background Technology

[0002] Flexible circuit boards, also known as flexible 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 before installation, including toughness testing.

[0003] Flexible printed circuit boards (FPCBs) are widely used. However, due to the complexity of their usage conditions, there are currently significant errors in the toughness testing of FPCBs. It is impossible to accurately obtain toughness data for FPCBs under different conditions, resulting in inaccurate data, incorrect judgments, and impacting equipment quality. Summary of the Invention

[0004] This invention discloses an apparatus and method for testing the toughness of flexible printed circuit boards, aiming to solve the technical problem in the background art where the toughness test data of flexible printed circuit boards cannot be accurately obtained, resulting in erroneous judgments.

[0005] This invention proposes a device for testing the toughness of flexible printed circuit boards, comprising:

[0006] The base has two symmetrical hangers fixedly connected to its upper side, and the two hangers are fixedly connected to the same horizontal axis.

[0007] The fixed position detection frame is rotatably connected to the outside of the horizontal axis, and the fixed connection frame is fixedly connected to the fixed position seat at the end away from the horizontal axis;

[0008] The live position detection frame is rotatably connected to the outside of the horizontal axis. The end of the live position detection frame away from the horizontal axis is fixedly connected to the live position seat. The fixed detection frame and the live position detection frame can rotate around the horizontal axis. During the rotation, there is an alternating overlapping area between the two.

[0009] Two clamping mounting components are respectively disposed on a fixed base and a movable base, and the clamping mounting components are used to install and fix the flexible circuit board;

[0010] A detection module is installed in the fixed seat and the movable seat. The detection module is used for the actual operation of flexible circuit board toughness testing and provides tensile force and feedback data.

[0011] The back frame is fixedly connected to the upper side of the base platform. The back frame is equipped with a flip-type positioning component, which is used to change the position and state of the fixed detection frame and the live detection frame.

[0012] An auxiliary module is located above the base platform and is used to change the angle between the live position detection frame and the fixed position detection frame.

[0013] In a preferred embodiment, the pressure-holding mounting assembly includes:

[0014] The base plate is slidably connected to the surface of the fixed seat or the movable seat;

[0015] A pressure plate is located above the base plate. Two symmetrical pressure plates are fixedly connected to the lower side of the pressure plate. The pressure plates are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is opened on the pressure plate. An analyzer is fixedly connected inside the rectangular mounting hole. A contact strip is provided on the lower side of the analyzer. The contact strip contacts the flexible circuit board. The analyzer is used to detect whether the flexible circuit board is functioning properly.

[0016] In a preferred embodiment, the pressure-holding mounting assembly further includes:

[0017] Four deflection blocks are rotatably connected to both sides of the pressure plate and are symmetrically distributed in pairs. Two symmetrical grooves are opened on the base plate. The lower ends of the four deflection blocks are located in the grooves of the base plate and are rotatably connected by bearings. The deflection blocks are used to change the position of the pressure plate to realize the lifting and pressing of the pressure plate.

[0018] Two symmetrical fixing plates are fixedly connected to the pressure plate, and each fixing plate has a through hole. Two symmetrical bosses are fixedly connected to the bottom plate, and each boss has a threaded hole.

[0019] 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.

[0020] In a preferred embodiment, the detection module includes:

[0021] A push plate is slidably connected to the surface of the fixed seat. Two symmetrical return springs are fixedly connected between the push plate and the fixed seat. The push plate, in conjunction with the return springs, is used to buffer the displacement of the bottom plate above the fixed seat.

[0022] The pressure sensor is fixedly connected between the push plate and the retaining seat to provide real-time feedback of the force data on the bottom plate above the retaining seat.

[0023] The bottom slide is fixedly connected to the lower side of the bottom plate of the movable seat, and the bottom slide has a threaded hole.

[0024] The detection motor is fixedly connected to the movable seat. The output shaft of the detection motor is connected to the detection lead screw through a coupling. The detection lead screw passes through the threaded hole of the bottom attached slide. The detection lead screw and the bottom attached slide are rotatably connected by the inner wall thread. The detection motor drives the detection lead screw to rotate to drive the base plate to move on the movable seat.

[0025] In a preferred embodiment, the flip-type transposition component includes:

[0026] Two tilting frames are rotatably connected to the back frame via bearings. Two symmetrical tilting motors are fixedly connected to the back frame. The two tilting motors are synchronous motors. The output shafts of the tilting motors are fixedly connected to the tilting frames. The tilting motors are used to synchronously drive the tilting frames to rotate.

[0027] The top seat is fixedly connected to the front end of the tilting frame. The top seat has a mounting hole, and a push-type hydraulic cylinder is fixedly connected inside the mounting hole.

[0028] 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. The push-type hydraulic cylinder is used to push the slide so that it slides on the top seat.

[0029] A rotating shaft is fixedly connected to a protrusion on a slide. A roller is rotatably connected to the outside of the rotating shaft via a bearing. The roller is used to contact the stationary or live detection frame and provide thrust to change its position.

[0030] In a preferred embodiment, the base platform is provided with a surface platform, the surface platform has a push-type sliding groove, and the base platform is provided with a sliding lock assembly.

[0031] In a preferred embodiment, the sliding locking assembly includes:

[0032] The front frame is fixedly connected to the upper side of the base platform and located next to the positioning detection frame. A push-type slide groove is provided on the upper side of the front frame.

[0033] The live position front frame is fixedly connected to the upper side of the base platform and located next to the live position detection frame. A push-type slide groove is opened on the upper side of the live position front frame.

[0034] Three locking blocks are slidably connected in the push-type slide grooves of the front platform, the fixed front frame and the movable front frame, respectively. When the locking blocks are pushed, they move to partially lock the fixed seat or the movable seat, thereby fixing the position of the fixed seat or the movable seat.

[0035] The suspension plate is fixedly connected to the upper part of the base platform and located below the fixation detection frame, and is used to assist in supporting the fixation detection frame.

[0036] In a preferred embodiment, a traction frame is fixedly connected to one end of the live position seat away from the live position detection frame. The traction frame consists of two rectangular rods, each with a sliding groove that is open on one side.

[0037] In a preferred embodiment, the auxiliary module includes:

[0038] The auxiliary base is fixedly connected to the upper side of the base platform, and two symmetrical uprights are fixedly connected to the upper side of the auxiliary base;

[0039] The L-shaped lifting platform is slidably connected to two uprights, and an electric push rod is fixedly connected to the L-shaped lifting platform.

[0040] The lifting hydraulic cylinder has its lower end fixedly connected to the upper side of the auxiliary seat, and its telescopic end fixedly connected to the L-shaped lifting plate. It is used to push the L-shaped lifting plate to make it move up and down.

[0041] The top head is fixedly connected to the front end of the electric push rod. A through hole is opened on the top head, and a wheel axle is fixedly connected inside the through hole. Both ends of the wheel axle are rotatably connected to rollers through bearings. The two rollers are movably connected to the two rectangular rod grooves of the traction frame.

[0042] A method for testing the toughness of flexible printed circuit boards, using a device for testing the toughness of flexible printed circuit boards as described above, includes the following steps:

[0043] Step 1: Use two clamping mounting components to fix the flexible circuit board from both ends and adjust the circuit board's continuity status.

[0044] Step 2, Flatness test state: Activate the flip-type transposition component to change the position of the fixed test frame and the live test frame so that the flexible circuit board is in a horizontal state. Then use the sliding lock component to fix the position of the two test frames. Then use the test component to perform toughness test on it.

[0045] Step 3, Semicircle Detection Status: Reactivate the flip-type transposition component to reset the two detection frames, and use the sliding lock component to fix the position of the fixed detection frame, and use the auxiliary module to fix the position of the live detection frame. Then, use the detection component to perform the detection.

[0046] Step 4, Multi-amplitude bending detection state: The position of the live detection frame is changed by the auxiliary module, so that the flexible circuit board bends at multiple amplitudes, and the detection components are used for detection.

[0047] Step 5, Dynamic Bending Detection State: The auxiliary module drives the live position detection frame into a dynamic bending state, and the detection components are used to detect the toughness of the flexible circuit board under dynamic folding.

[0048] As can be seen from the above, the device for testing the toughness of flexible circuit boards provided by the present invention has four testing modes, which can simulate different states of flexible circuit boards in actual use, thereby performing targeted toughness testing. This effectively avoids large errors in toughness testing results caused by the limitations of circuit board testing states. At the same time, the four modes of testing can be achieved with a single installation of the flexible circuit board, which effectively improves the overall efficiency of flexible circuit board toughness testing. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the overall structure of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0050] Figure 2 This is a schematic diagram of the structure of the device for testing the toughness of flexible circuit boards proposed in this invention under a flat testing state.

[0051] Figure 3 This is a schematic diagram of the structure of a flexible circuit board toughness testing device under bending testing conditions, as proposed in this invention.

[0052] Figure 4 This is a schematic diagram of the fixture and fixture structure of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0053] Figure 5 This is a schematic diagram of the movable testing frame and movable seat structure of the device for testing the toughness of flexible circuit boards proposed in this invention;

[0054] Figure 6 This is a partial cross-sectional view of the mounting base of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0055] Figure 7 This is a schematic diagram of the pressing and mounting assembly structure of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0056] Figure 8 This is a schematic diagram of the fixed-position testing frame and the movable-position testing frame of the device for testing the toughness of flexible circuit boards proposed in this invention;

[0057] Figure 9 This is a schematic diagram of the flip-type transposition component structure of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0058] Figure 10 This is a schematic diagram of the auxiliary module structure of a device for testing the toughness of flexible circuit boards proposed in this invention.

[0059] In the diagram: 1. Base platform; 2. Hanger; 3. Horizontal axis; 4. Fixed position detection frame; 5. Live position detection frame; 6. Fixed position seat; 7. Live position seat; 8. Pressing and mounting assembly; 801. Base plate; 802. Pressure plate; 803. Pressure plate; 804. Analyzer; 805. Contact strip; 806. Deflection block; 807. Fixing plate; 808. Boss; 809. Fixing knob; 9. Detection module; 901. Push plate; 902. Return spring; 903. Pressure sensor; 904. Bottom slide; 905. Detection motor; 906. Detection screw; 10. Back frame; 11. Flip-type transposition assembly; 110 1. Tilting frame; 1102. Tilting motor; 1103. Top seat; 1104. Slide carriage; 1105. Push-type hydraulic cylinder; 1106. Rotating shaft; 1107. Roller; 12. Platform; 13. Sliding lock assembly; 1301. Fixed front frame; 1302. Flexible front frame; 1303. Locking block; 1304. Suspension plate; 14. Traction frame; 15. Auxiliary module; 1501. Auxiliary seat; 1502. Upright pole; 1503. L-shaped lifting plate; 1504. Lifting hydraulic cylinder; 1505. Electric push rod; 1506. Top head; 1507. Wheel axle; 1508. Roller. Detailed Implementation

[0060] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0061] The device for testing the toughness of flexible circuit boards disclosed in this invention is mainly used in scenarios where the toughness test data of flexible circuit boards cannot be accurately obtained, leading to incorrect judgments.

[0062] Reference Figures 1-10 A device for testing the toughness of flexible printed circuit boards, comprising:

[0063] The base 1 has two symmetrical hangers 2 fixedly connected to its upper side, and the two hangers 2 are fixedly connected to the same horizontal axis 3.

[0064] The fixed detection frame 4 is rotatably connected to the outside of the horizontal axis 3, and the fixed connection frame is fixedly connected to the fixed seat 6 at the end away from the horizontal axis 3;

[0065] The live position detection frame 5 is rotatably connected to the outside of the horizontal axis 3. The end of the live position detection frame 5 away from the horizontal axis 3 is fixedly connected to the live position seat 7. The fixed detection frame and the live position detection frame 5 can rotate around the horizontal axis 3. During the rotation, there is an alternating overlapping area between the two.

[0066] Two clamping mounting components 8 are respectively disposed on the fixed base 6 and the movable base 7. The clamping mounting components 8 are used to install and fix the flexible circuit board.

[0067] The detection module 9 is set in the fixed seat 6 and the movable seat 7. The detection module 9 is used for the actual operation of flexible circuit board toughness testing and provides tensile force and feedback data.

[0068] The back frame 10 is fixedly connected to the upper side of the base platform 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 detection frame 4 and the live detection frame 5.

[0069] The auxiliary module 15 is located above the base 1. The auxiliary module 15 is used to change the angle between the live position detection frame 5 and the fixed position detection frame 4.

[0070] The device has four testing modes, which can simulate different states of flexible circuit boards in actual use, thereby conducting targeted toughness tests. This effectively avoids large errors in toughness test results caused by the limitations of the circuit board testing state. At the same time, the flexible circuit board can be tested in all four modes with a single installation, which effectively improves the overall efficiency of flexible circuit board toughness testing.

[0071] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 In a preferred embodiment, the pressure-holding mounting assembly 8 includes:

[0072] The base plate 801 is slidably connected to the surface of the fixed seat 6 or the movable seat 7;

[0073] The pressure plate 802 is located above the base plate 801. Two symmetrical pressure plates 803 are fixedly connected to the lower side of the pressure plate 802. The pressure plates 803 are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is opened 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 contacts the flexible circuit board. The analyzer 804 is used to detect whether the flexible circuit board is functioning properly.

[0074] In this invention, the pressure-holding mounting assembly 8 further includes:

[0075] 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 base plate 801. The lower ends of the four deflection blocks 806 are located in the grooves of the base plate 801 and are rotatably connected by bearings. The deflection blocks 806 are used to change the position of the pressure plate 802 to realize the lifting and pressing of the pressure plate 802.

[0076] Two symmetrical fixing plates 807 are fixedly connected to the pressure plate 802. Each fixing plate 807 has a through hole. Two symmetrical bosses 808 are fixedly connected to the bottom plate 801. Each boss 808 has a threaded hole.

[0077] 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.

[0078] The clamping and mounting assembly 8 is suitable for the installation and fixing of flexible circuit boards. That is, the clamping and mounting assembly 8 uses the clamping plate 802 and the base plate 801 to clamp and fix the flexible circuit board. This method can ensure the stability of the installation while achieving the effect of quick disassembly and assembly, thus improving the overall efficiency of flexible circuit board testing.

[0079] The 803 pressure plate is made of rubber, which provides insulation while also acting as a buffer and protection, and improving the fixing effect, thus preventing excessive pressure from damaging the flexible circuit board.

[0080] It should be noted that the Analyzer 804 can form a circuit after the flexible circuit board is installed, thereby monitoring whether the flexible circuit board is malfunctioning in real time, and improving the real-time performance and accuracy of the toughness test results.

[0081] Reference Figure 4 , Figure 5 and Figure 6 In a preferred embodiment, the detection module 9 includes:

[0082] Push plate 901 is slidably connected to the surface of fixed seat 6. Two symmetrical return springs 902 are fixedly connected between push plate 901 and fixed seat 6. Push plate 901 and return springs 902 are used to buffer the displacement of bottom plate 801 above fixed seat 6.

[0083] 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 base plate 801 above the retaining seat 6.

[0084] The bottom slide 904 is fixedly connected to the lower side of the bottom plate 801 on the surface of the movable seat 7, and the bottom slide 904 is provided with a threaded hole.

[0085] 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 lead screw 906 through a coupling. The detection lead screw 906 passes through the threaded hole of the bottom attached slide 904. The detection lead screw 906 and the bottom attached slide 904 are rotatably connected by the inner wall thread. The detection motor 905 drives the detection lead screw 906 to rotate to drive the base plate 801 to move on the movable seat 7.

[0086] The testing component is suitable for the toughness testing of flexible circuit boards. The testing component achieves the stretching of the flexible circuit board by changing the position of the base plate 801 above the live seat 7, and obtains toughness data through real-time feedback from the pressure sensor 903, ensuring the real-time nature and accuracy of the data.

[0087] During the testing process, the push plate 901 and the reset spring 902 can buffer the displacement of the base plate 801 on the fixed seat 6, thereby achieving the purpose of buffering the deformation of the flexible circuit board itself, avoiding the direct action of tensile force on the circuit board, which would cause the circuit board to break and be damaged, thus affecting the accuracy of the toughness test results.

[0088] Reference Figure 2 , Figure 4 , Figure 8 and Figure 9 In a preferred embodiment, the flip-type transposition component 11 includes:

[0089] Two tilting frames 1101 are rotatably connected to the back frame 10 via bearings. Two symmetrical tilting motors 1102 are fixedly connected to the back frame 10. The two tilting motors 1102 are synchronous motors. The output shaft of the tilting motor 1102 is fixedly connected to the tilting frame 1101. The tilting motor 1102 is used to synchronously drive the tilting frame 1101 to rotate.

[0090] The top seat 1103 is fixedly connected to the front end of the tilting frame 1101. The top seat 1103 has a mounting hole, and a push-type hydraulic cylinder 1105 is fixedly connected inside the mounting hole.

[0091] 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 so that it slides on the top seat 1103.

[0092] 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 the bearing. The roller 1107 is used to contact the fixed position detection frame 4 or the live position detection frame 5 and provide thrust to change its position.

[0093] The flip-type transposition assembly 11 is suitable for changing the position of two test frames. That is, the flip-type transposition assembly 11 uses two synchronously rotating flip frames 1101 to change the position of the two test frames, which facilitates the switching of different test states of the flexible circuit board.

[0094] Reference Figure 2 , Figure 3 , Figure 4 , Figure 8 and Figure 9In a preferred embodiment, a face platform 12 is provided on the base platform 1, the face platform 12 is provided with a push-type sliding groove, and a sliding lock assembly 13 is provided on the base platform 1.

[0095] In this invention, the sliding locking assembly 13 includes:

[0096] The front mounting frame 1301 is fixedly connected to the upper side of the base platform 1 and is located next to the mounting detection frame 4. A push-type slide groove is provided on the upper side of the front mounting frame 1301.

[0097] The live position front frame 1302 is fixedly connected to the upper side of the base platform 1 and is located next to the live position detection frame 5. A push-type slide groove is provided on the upper side of the live position front frame 1302.

[0098] Three locking blocks 1303 are slidably connected in the push-type slide grooves of the face plate 12, the fixed front frame 1301 and the movable front frame 1302 respectively. When the locking blocks 1303 are pushed, they move to partially lock the fixed seat 6 or the movable seat 7, which is used to fix the position of the fixed seat 6 or the movable seat 7.

[0099] The suspension plate 1304 is fixedly connected to the upper side of the base platform 1 and located below the fixed position detection frame 4, and is used to assist in supporting the fixed position detection frame 4.

[0100] The sliding locking assembly 13 is suitable for auxiliary fixing of two testing frames under different testing conditions. Specifically, the sliding locking assembly 13 can lock and fix the fixed seat 6 and the movable seat 7 in the flat testing state, thereby fixing the two testing frames; it can fix the fixed seat 6 in other testing states, thereby fixing the testing frame 4. The setting of the sliding locking assembly 13 can effectively ensure the stability of the testing frame under different testing conditions and avoid the inability to test or the increase of testing error due to the force displacement of the testing frame.

[0101] Reference Figure 3 , Figure 5 and Figure 10 In a preferred embodiment, a traction frame 14 is fixedly connected to one end of the live seat 7 away from the live detection frame 5. The traction frame 14 consists of two rectangular rods, each of which has a sliding groove with a single-sided opening.

[0102] In this invention, the auxiliary module 15 includes:

[0103] The auxiliary base 1501 is fixedly connected to the upper side of the base platform 1, and two symmetrical uprights 1502 are fixedly connected to the upper side of the auxiliary base 1501.

[0104] The L-shaped lifting plate 1503 is slidably connected to two uprights 1502, and an electric push rod 1505 is fixedly connected to the L-shaped lifting plate 1503.

[0105] The lifting hydraulic cylinder 1504 has its lower end fixedly connected to the upper side of the auxiliary seat 1501, and its telescopic end fixedly connected to the L-shaped lifting plate 1503, which is used to push the L-shaped lifting plate 1503 to make it move up and down.

[0106] The top head 1506 is fixedly connected to the front end of the electric push rod 1505. A through hole is provided on the top head 1506. A wheel axle 1507 is fixedly connected inside the through hole. Both ends of the wheel axle 1507 are rotatably connected to rollers 1508 through bearings. The two rollers 1508 are respectively movably connected to the two rectangular rod grooves of the traction frame 14.

[0107] The auxiliary module 15 is used for fixing and changing the position of the live position detection frame 5. That is, the auxiliary module 15 uses the roller 1508 to enter the traction frame 14 to change the state of the live position detection frame 5 by assembling it into a whole. This allows the live position seat 7 to have three states: vertical fixed, multi-angle deflection, and dynamic deflection. This enables the switching detection of different states of the flexible circuit board, effectively simulating the different forms of the flexible circuit board in actual use, achieving comprehensive detection, and avoiding the limitations of detection that lead to large errors in the toughness test results.

[0108] The roller 1508 on the axle 1507 moves within the groove of the traction frame 14, which ensures the smoothness of the live position detection frame 5 when it bends.

[0109] A method for testing the toughness of flexible printed circuit boards, using a device for testing the toughness of flexible printed circuit boards as described above, includes the following steps:

[0110] Step 1: Use two clamping mounting components 8 to fix the flexible circuit board from both ends and adjust the circuit status of the flexible circuit board (place one end of the flexible circuit board under the clamping plate 802, adjust the position and push the clamping plate 802 to press the flexible circuit board tightly, and fix the clamping plate 802 to the base plate 801 by rotating the fixing knob 809. Then fix the other end of the flexible circuit board in the same way. After completion, use the analyzer 804 to check whether the function of the flexible circuit board is normal).

[0111] Step 2, Flat Detection State: Activate the flip-type transposition assembly 11 to change the position of the fixed detection frame 4 and the movable detection frame 5 so that the flexible circuit board is in a horizontal state (activate 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 a pushing force during the synchronous lifting process, and the two detection frames will be flipped and lifted until the fixed seat 6 and the movable seat 7 are in a horizontal position). Then, use the sliding lock assembly 13 to fix the position of the two detection frames (the fixed seat 6 and the movable seat 7 are placed horizontally). Then, the locking blocks 1303 on the fixed front frame 1301 and the movable front frame 1302 are pushed to fix the fixed seat 6 and the movable seat 7. Then, the toughness test is performed on it using the detection component (the detection motor 905 is started to drive the detection screw 906 to rotate, the base plate 801 on the surface of the movable seat 7 moves away from the fixed seat 6, and the flexible circuit board is stretched after being straightened, thereby achieving the purpose of toughness test. During the process, the pressure sensor 903 will provide real-time feedback of the tensile force data, and the analyzer 804 will provide real-time feedback of the functional status of the flexible circuit board).

[0112] Step 3, Semicircular Detection State: Reactivate the flip-type switching component 11 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 combine to form a semicircle), and use the sliding lock 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 platform 12 to lock and fix the fixed seat 6), and use the auxiliary module 15 to fix the position of the live detection frame 5 (after the live detection frame 5 is reset, the live 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 slide groove from the single-sided opening of the traction frame 14, and the live detection frame 5 is fixed), and then use the detection component to perform detection;

[0113] Step 4, Multi-amplitude bending detection state: Use the auxiliary module 15 to change the position of the live position detection frame 5 (adjust the extension length of the electric push rod 1505 according to the actual detection requirements. The longer the extension distance of the electric push rod 1505, the greater the bending amplitude of the flexible circuit board, and vice versa), so that the flexible circuit board undergoes multi-amplitude bending, and the detection components are used for detection.

[0114] Step 5, Dynamic Bending Detection State: The auxiliary module 15 drives the live position detection frame 5 into a dynamic bending state (the electric push rod 1505 enters a reciprocating extension state, the roller 1508 reciprocates in the slide groove of the traction frame 14, the live position detection frame 5 performs reciprocating bending, and the flexible circuit board is frequently bent, folded and unfolded). The detection component is used to detect the toughness of the flexible circuit board under dynamic folding (when detecting in this state, the pressure plate 802 on the live position seat 7 needs to be adjusted and fixed. The position of the pressure plate 802 on the live position seat 7 does not change during dynamic bending).

[0115] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the toughness of flexible printed circuit boards, characterized in that, include: The base has two symmetrical hangers fixedly connected to its upper side, and the two hangers are fixedly connected to the same horizontal axis. The positioning detection frame is rotatably connected to the outside of the horizontal axis, and a positioning seat is fixedly connected to the end of the positioning detection frame away from the horizontal axis. The live position detection frame is rotatably connected to the outside of the horizontal axis. The end of the live position detection frame away from the horizontal axis is fixedly connected to the live position seat. The fixed position detection frame and the live position detection frame can rotate around the horizontal axis. During the rotation, there is an alternating overlapping area between the two. Two clamping mounting components are respectively disposed on a fixed base and a movable base, and the clamping mounting components are used to install and fix the flexible circuit board; A detection module is installed in the fixed seat and the movable seat. The detection module is used for the actual operation of flexible circuit board toughness testing and provides tensile force and feedback data. The back frame is fixedly connected to the upper side of the base platform. The back frame is equipped with a flip-type positioning component, which is used to change the position and state of the fixed detection frame and the live detection frame. An auxiliary module is located above the base platform and is used to change the angle between the live position detection frame and the fixed position detection frame. A traction frame is fixedly connected to one end of the live position seat away from the live position detection frame. The traction frame consists of two rectangular rods, each with a sliding groove that is open on one side. The auxiliary module includes: The auxiliary base is fixedly connected to the upper side of the base platform, and two symmetrical uprights are fixedly connected to the upper side of the auxiliary base; The L-shaped lifting platform is slidably connected to two uprights, and an electric push rod is fixedly connected to the L-shaped lifting platform. The lifting hydraulic cylinder has its lower end fixedly connected to the upper side of the auxiliary seat, and its telescopic end fixedly connected to the L-shaped lifting plate. It is used to push the L-shaped lifting plate to make it move up and down. The top head is fixedly connected to the front end of the electric push rod. A through hole is opened on the top head, and a wheel axle is fixedly connected inside the through hole. Both ends of the wheel axle are rotatably connected to rollers through bearings. The two rollers are movably connected to the two rectangular rod grooves of the traction frame. The longer the electric push rod extends forward, the greater the bending amplitude of the flexible circuit board.

2. The device for testing the toughness of flexible circuit boards according to claim 1, characterized in that, The pressure-fitting mounting assembly includes: The base plate is slidably connected to the surface of the fixed seat or the movable seat; A pressure plate is located above the base plate. Two symmetrical pressure plates are fixedly connected to the lower side of the pressure plate. The pressure plates are used to press the flexible circuit board to achieve fixation. A rectangular mounting hole is opened on the pressure plate. An analyzer is fixedly connected inside the rectangular mounting hole. A contact strip is provided on the lower side of the analyzer. The contact strip contacts the flexible circuit board. The analyzer is used to detect whether the flexible circuit board is functioning properly.

3. The device for testing the toughness of flexible circuit boards according to claim 2, characterized in that, The pressure-holding mounting assembly also includes: Four deflection blocks are rotatably connected to both sides of the pressure plate and are symmetrically distributed in pairs. Two symmetrical grooves are opened on the base plate. The lower ends of the four deflection blocks are located in the grooves of the base plate and are rotatably connected by bearings. The deflection blocks are used to change the position of the pressure plate to realize the lifting and pressing of the pressure plate. Two symmetrical fixing plates are fixedly connected to the pressure plate, and each fixing plate has a through hole. Two symmetrical bosses are fixedly connected to the bottom plate, and each boss has 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 flexible circuit boards according to claim 3, characterized in that, The detection module includes: A push plate is slidably connected to the surface of the fixed seat. Two symmetrical return springs are fixedly connected between the push plate and the fixed seat. The push plate, in conjunction with the return springs, is used to buffer the displacement of the bottom plate above the fixed seat. The pressure sensor is fixedly connected between the push plate and the retaining seat to provide real-time feedback of the force data on the bottom plate above the retaining seat. The bottom slide is fixedly connected to the lower side of the bottom plate of the movable seat, and the bottom slide has a threaded hole. The detection motor is fixedly connected to the movable seat. The output shaft of the detection motor is connected to the detection lead screw through a coupling. The detection lead screw passes through the threaded hole of the bottom attached slide. The detection lead screw and the bottom attached slide are rotatably connected by the inner wall thread. The detection motor drives the detection lead screw to rotate to drive the base plate to move on the movable seat.

5. The device for testing the toughness of flexible circuit boards according to claim 4, characterized in that, The flip-type transposition component includes: Two tilting frames are rotatably connected to the back frame via bearings. Two symmetrical tilting motors are fixedly connected to the back frame. The two tilting motors are synchronous motors. The output shafts of the tilting motors are fixedly connected to the tilting frames. The tilting motors are used to synchronously drive the tilting frames to rotate. The top seat is fixedly connected to the front end of the tilting frame. The top seat has a mounting hole, and 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. The push-type hydraulic cylinder is used to push the slide so that it slides on the top seat. A rotating shaft is fixedly connected to a protrusion on a slide. A roller is rotatably connected to the outside of the rotating shaft via a bearing. The roller is used to contact the stationary or live detection frame and provide thrust to change its position.

6. The device for testing the toughness of flexible circuit boards according to claim 5, characterized in that, The base platform is provided with a face platform, which has a push-in sliding groove, and the base platform is provided with a sliding locking component.

7. The device for testing the toughness of flexible circuit boards according to claim 6, characterized in that, The sliding lock assembly includes: The front frame is fixedly connected to the upper side of the base platform and located next to the positioning detection frame. A push-type slide groove is provided on the upper side of the front frame. The live position front frame is fixedly connected to the upper side of the base platform and located next to the live position detection frame. A push-type slide groove is opened on the upper side of the live position front frame. Three locking blocks are slidably connected in the push-type slide grooves of the front platform, the fixed front frame and the movable front frame, respectively. When the locking blocks are pushed, they move to partially lock the fixed seat or the movable seat, thereby fixing the position of the fixed seat or the movable seat. The suspension plate is fixedly connected to the upper part of the base platform and located below the fixation detection frame, and is used to assist in supporting the fixation detection frame.

8. A method for testing the toughness of flexible printed circuit boards, using an apparatus for testing the toughness of flexible printed circuit boards as described in claim 7, characterized in that... Includes the following steps: Step 1: Use two clamping mounting components to fix the flexible circuit board from both ends and adjust the circuit board's continuity status. Step 2, Flatness test state: Activate the flip-type transposition component to change the position of the fixed test frame and the live test frame so that the flexible circuit board is in a horizontal state. Then use the sliding lock component to fix the position of the two test frames. Then use the test component to perform toughness test on it. Step 3, Semicircle Detection Status: Reactivate the flip-type transposition component to reset the two detection frames, and use the sliding lock component to fix the position of the fixed detection frame, and use the auxiliary module to fix the position of the live detection frame. Then, use the detection component to perform the detection. Step 4, Multi-amplitude bending detection state: The position of the live detection frame is changed by the auxiliary module, so that the flexible circuit board bends at multiple amplitudes, and the detection components are used for detection. Step 5, Dynamic Bending Detection State: The auxiliary module drives the live position detection frame into a dynamic bending state, and the detection components are used to detect the toughness of the flexible circuit board under dynamic folding.

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