Full-automatic testing device for flexible circuit board

Abstract

The invention discloses a full-automatic testing device for a flexible circuit board, which belongs to the technical field of flexible circuit board testing and comprises an FPC bending testing machine body, two groups of fixing assemblies for clamping two ends of the flexible circuit board body and a driving assembly for driving the fixing assemblies to rotate in a reciprocating manner, the fixing assembly comprises a first clamping plate and a second clamping plate, the two sides of the first clamping plate are fixedly connected with one ends of two sets of guide rods, and the guide rods are in sliding fit with the sliding seats; through the arrangement of the guide rods, the springs and other structures, the flexible circuit board fixing device is simple in structure, convenient to use and practical, the flexible circuit board can be preliminarily fixed simply and rapidly, then fixation is strengthened through hand-turned screws, and the fixing difficulty of the flexible circuit board is reduced; the two ends of the flexible circuit board can be driven to vertically rotate and horizontally rotate respectively, so that the torsion test of the flexible circuit board is realized, and different requirements of operators are met.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible circuit board testing, in particular to a fully automatic testing device for a flexible circuit board. Background Art

[0002] A flexible circuit board (FPC) is a type of circuit board made from a flexible insulating material such as polyimide or polyester film. It is lightweight, bendable, and fold-resistant, and can be formed into various shapes based on design requirements. It is widely used in smartphones, wearable devices, medical equipment, automotive electronics, and other fields. Compared to rigid circuit boards, FPCs not only save space but also operate stably in dynamic environments, providing key support for the flexible and intelligent design of modern electronic devices. The core advantage of FPCs is their flexibility, and they must maintain performance during dynamic use such as bending and folding. Therefore, testing their mechanical properties, such as bending resistance and fatigue resistance, is crucial.

[0003] Currently, FPC bending testers are commonly used to perform bending tests on flexible circuit boards. However, existing FPC bending testers have difficulty fixing the flexible circuit boards and can only rotate one end of the flexible circuit board around the other end, and cannot perform torsion tests. This problem has not been solved in the existing technology. Summary of the Invention

[0004] The object of the present invention is to provide a fully automatic testing device for flexible circuit boards. By providing structures such as guide rods and springs, the flexible circuit board can be simply and quickly initially fixed, and then hand-tightened screws can be used to strengthen the fixation, thereby reducing the difficulty of fixing the flexible circuit board. In addition, by providing two sets of drive components, the two ends of the flexible circuit board can be driven to rotate vertically and horizontally respectively, thereby realizing torsion testing of the flexible circuit board, thereby meeting the different needs of operators and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A fully automatic testing device for flexible circuit boards, comprising an FPC bending tester body, two sets of fixing assemblies for clamping two ends of the flexible circuit board body, and a driving assembly for driving the fixing assemblies to rotate back and forth; The fixing assembly includes a first clamping plate and a second clamping plate, the two sides of the first clamping plate are fixedly connected to one end of the two sets of guide rods, the guide rods are slidably matched with the slides, the slides are slidably installed on the two sides of the second clamping plate, and the guide rods are slidably sleeved with springs; The drive assembly includes a drive motor, and a half gear is fixedly installed at the output end of the drive motor. The teeth of the half gear are engaged with two sets of bevel gears. The bevel gears are arranged perpendicular to the half gears, and the bevel gears are symmetrically arranged on both sides of the half gears.

[0006] Preferably, the first clamping plate and the second clamping plate respectively abut against two sides of the flexible circuit board body, the other end of the guide rod is fixedly mounted with a limit plate, one end of the spring abuts against the limit plate, and the other end of the spring abuts against the slide seat.

[0007] Preferably, a mounting seat is fixedly mounted on a side of the second splint away from the first splint, a hand screw is slidably mounted on the mounting seat, and the hand screw is threadedly connected to the first splint.

[0008] Preferably, the drive motor is fixedly installed inside a drive box, the drive box is fixedly connected to the FPC bending test machine body, and the two groups of bevel gears are fixedly connected via a connecting shaft.

[0009] Preferably, the connecting shaft is coaxially arranged with the bevel gear, and the bevel gear is rotationally connected to the drive box.

[0010] Preferably, the outer side of one group of the bevel gears is coaxially arranged and fixedly connected to the transmission shaft, and the transmission shaft passes through the drive box and is rotationally connected to the transmission box.

[0011] Preferably, the two groups of driving assemblies are respectively arranged at the bottom and top of the FPC bending test machine body, and the driving assembly at the bottom of the FPC bending test machine body is fixedly connected to the first clamping plate of one group of clamping assemblies through a transmission shaft.

[0012] Preferably, the driving assembly on the top of the FPC bending test machine body is fixedly connected to the center of the connecting frame through a transmission shaft, and the two sides of the bottom of the connecting frame are fixedly connected to the first clamping plates of another group of clamping assemblies.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention has a simple structure, is convenient and practical, and can simply and quickly perform preliminary fixation of the flexible circuit board by providing structures such as guide rods and springs. The fixation can then be strengthened by hand-tightening screws, thereby reducing the difficulty of fixing the flexible circuit board. In addition, by providing two sets of drive components, the two ends of the flexible circuit board can be driven to rotate vertically and horizontally respectively, thereby realizing torsion testing of the flexible circuit board to meet the different needs of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the flexible circuit board; Figure 3 It is a schematic diagram of the fixed component structure; Figure 4 A schematic diagram of the drive component structure.

[0015] In the figure: 1. FPC bending test machine body; 2. Flexible circuit board body; 3. Fixing assembly; 301. First clamping plate; 302. Second clamping plate; 303. Guide rod; 304. Slide; 305. Spring; 306. Limit plate; 307. Mounting seat; 308. Thumb screw; 4. Driving assembly; 401. Driving motor; 402. Half gear; 403. Bevel gear; 404. Driving box; 405. Connecting shaft; 406. Transmission shaft; 5. Connecting frame. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 4 , the present invention provides a technical solution: A fully automatic testing device for flexible circuit boards includes an FPC bending test machine body 1. The FPC bending test machine body 1 integrates a main control system such as an embedded controller and a motion control card, a drive system such as a motor driver, a power supply and signal conditioning module such as a switching power supply and a signal conditioning board, a connection socket connected to the flexible circuit board body 2, a data acquisition and communication module such as a communication module, a human-machine interface such as a touch screen, a safety protection circuit such as an emergency stop button, and a software system such as a control program and data analysis software, so as to realize functions such as automatic control, precise driving, data acquisition and analysis, and safety protection, thereby meeting the requirements of flexible circuit board torsion testing and industry standards.

[0018] By setting up the FPC bending test machine body 1, it is mainly used to perform fully automatic torsion testing on the flexible circuit board body 2. The test time, the number of bending and twisting can be set, and it is electrically connected to the flexible circuit board body being tested to obtain the working status of the flexible circuit board body 2 in real time, thereby accurately testing the mechanical properties of the flexible circuit board body 2 such as bending resistance and fatigue resistance, and meeting the testing requirements of smart phones, wearable devices and other fields for the performance of flexible circuit boards in dynamic use.

[0019] The cam 308 is a handle that is fixed on the cam 309 and the handle 309 is a handle that is fixed on the cam 309. When the cam 309 is in the work position, the cam 309 is in the work position, and the cam 309 is a handle that is fixed on the cam 309. When the cam 309 is in the work position, the cam 309 is a handle that is fixed on the cam 309.

[0020] By setting up a fixing component 3, it is mainly used to stably clamp the two ends of the flexible circuit board body 2. Through the first clamping plate 301 and the second clamping plate 302, in conjunction with the guide rod 303, the spring 305 and other structures, the elastic force of the spring 305 can be used to quickly make the first clamping plate 301 and the second clamping plate 302 perform preliminary positioning and clamping on the flexible circuit board body 2, reducing the difficulty of fixing, and then by tightening the hand screw 308 through the mounting seat 307 and threading it with the first clamping plate 301, the clamping force is further strengthened to ensure that the flexible circuit board body 2 will not loosen during the test, providing a stable clamping foundation for the subsequent driving component 4 to drive it to perform vertical and horizontal rotation torsion tests.

[0021] The drive assembly 4 is further included to drive the fixed assembly 3 to rotate back and forth. The drive assembly 4 includes a drive motor 401. A half gear 402 is fixedly mounted on the output end of the drive motor 401. The tooth distribution angle of the half gear 402 is 120 degrees. The teeth of the half gear 402 are engaged with two sets of bevel gears 403. The bevel gears 403 are arranged vertically to the half gear 402. The bevel gears 403 are symmetrically arranged on both sides of the half gear 402. The drive motor 401 is fixedly mounted inside the drive box 404. The drive box 404 is fixedly connected to the FPC bending test machine body 1. The two sets of bevel gears 403 are fixedly connected by a connecting shaft 405. The connecting shaft 405 is coaxial with the bevel gear 403. Arrangement, the bevel gear 403 is rotatably connected to the drive box 404, the outer side of one group of bevel gears 403 is coaxially arranged and fixedly connected with the transmission shaft 406, the transmission shaft 406 passes through the drive box 404 and is rotatably connected to the transmission box, two groups of drive components 4 are respectively arranged at the bottom and top of the FPC bending test machine body 1, the drive component 4 at the bottom of the FPC bending test machine body 1 is fixedly connected to the first clamping plate 301 of one group of clamping components through the transmission shaft 406, the drive component 4 at the top of the FPC bending test machine body 1 is fixedly connected to the center of the connecting frame 5 through the transmission shaft 406, and the bottom two sides of the connecting frame 5 are fixedly connected to the first clamping plate 301 of the other group of clamping components.

[0022] By providing a drive assembly 4, power can be output through the drive motor 401 to drive the half gear 402 to rotate. The half gear 402 is meshed with two sets of vertically arranged bevel gears 403 to transmit the rotational power to the transmission shaft 406. The teeth of the half gear 402 can only mesh with one set of bevel gears 403 at the same time. In the first half of each rotation of the half gear 402, it will drive the transmission shaft 406 to rotate clockwise through one set of bevel gears 403. In the second half of each rotation, it will disengage from the current bevel gear 403 and mesh with the other bevel gear 403 to drive the transmission shaft 406 to rotate counterclockwise, thereby achieving periodic reciprocating rotation; two sets of drive assemblies 4 are respectively arranged at the top and bottom of the FPC bending test machine body 1, which can respectively drive the fixed assemblies 3 at both ends of the flexible circuit board to rotate vertically and horizontally, thereby achieving reciprocating torsion testing of the flexible circuit board body 2. This design enables the flexible circuit board body 2 to accurately test its fatigue resistance and flexibility during the dynamic bending process simulating actual usage scenarios, meeting diverse testing needs.

[0023] During specific use, the device is moved to a designated position. First, the two ends of the flexible circuit board body 2 are placed between the first clamping plate 301 and the second clamping plate 302 of the two sets of fixing components 3 respectively. The spring 305 is used to initially fix the clamping plate to the flexible circuit board body 2, and then the hand screw 308 is tightened to strengthen the clamping to ensure that it does not loosen during the test. Then, the test parameters such as the test time, the number of bends and twists, etc. are set through the FPC bending tester body 1, and the FPC bending tester body 1 is electrically connected to the flexible circuit board body 2 to monitor its working status in real time. After starting the device, the bottom and top drive components 4 respectively drive the half gear 402 to rotate through the drive motor 401. The meshing transmission of the half gear 402 and the bevel gear 403 causes the transmission shaft 406 to achieve periodic reciprocating rotation, thereby driving the two ends of the flexible circuit board body 2 to perform vertical and horizontal torsion tests. During the test, the operator can observe various data through the human-machine interface. After the test, the system automatically analyzes and generates a test report on the mechanical properties of the flexible circuit board body 2, such as bending resistance and fatigue resistance.

[0024] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic testing device for flexible circuit boards, characterized by: The invention comprises an FPC bending test machine body (1), two sets of fixing components (3) for clamping two ends of the flexible circuit board body (2), and a driving component (4) for driving the fixing component (3) to rotate back and forth; The fixing assembly (3) includes a first clamping plate (301) and a second clamping plate (302), both sides of the first clamping plate (301) are fixedly connected to one end of two sets of guide rods (303), the guide rods (303) are slidably matched with the slides (304), the slides (304) are slidably mounted on both sides of the second clamping plate (302), and the guide rods (303) are slidably sleeved with springs (305); The drive assembly (4) comprises a drive motor (401), a half gear (402) being fixedly mounted on the output end of the drive motor (401), the teeth of the half gear (402) being meshed with two sets of bevel gears (403), the bevel gears (403) being arranged perpendicular to the half gears (402), and the bevel gears (403) being symmetrically arranged on both sides of the half gear (402).

2. The fully automatic testing device for flexible circuit boards according to claim 1, characterized in that: The first clamping plate (301) and the second clamping plate (302) respectively abut against two sides of the flexible circuit board body (2); the other end of the guide rod (303) is fixedly mounted with a limit plate (306); one end of the spring (305) abuts against the limit plate (306); and the other end of the spring (305) abuts against the slide seat (304).

3. The fully automatic testing device for flexible circuit boards according to claim 1, characterized in that: A mounting seat (307) is fixedly mounted on one side of the second clamping plate (302) away from the first clamping plate (301), and a hand screw (308) is slidably mounted on the mounting seat (307), and the hand screw (308) is threadedly connected to the first clamping plate (301).

4. The fully automatic testing device for flexible circuit boards according to claim 1, characterized in that: The driving motor (401) is fixedly installed inside the driving box (404), the driving box (404) is fixedly connected to the FPC bending test machine body (1), and the two sets of bevel gears (403) are fixedly connected via a connecting shaft (405).

5. The fully automatic testing device for flexible circuit boards according to claim 4, characterized in that: The connecting shaft (405) is coaxially arranged with the bevel gear (403), and the bevel gear (403) is rotationally connected to the drive box (404).

6. The fully automatic testing device for flexible circuit boards according to claim 5, characterized in that: The outer sides of one set of the bevel gears (403) are coaxially arranged and fixedly connected to a transmission shaft (406), and the transmission shaft (406) passes through the drive box (404) and is rotationally connected to the transmission box.

7. The fully automatic testing device for flexible circuit boards according to claim 1, characterized in that: The two groups of driving components (4) are respectively arranged at the bottom and top of the FPC bending test machine body (1), and the driving component (4) at the bottom of the FPC bending test machine body (1) is fixedly connected to the first clamping plate (301) of one group of clamping components via a transmission shaft (406).

8. The fully automatic testing device for flexible circuit boards according to claim 7, characterized in that: The driving assembly (4) at the top of the FPC bending test machine body (1) is fixedly connected to the center of the connecting frame (5) via a transmission shaft (406), and both sides of the bottom of the connecting frame (5) are fixedly connected to the first clamping plate (301) of another group of clamping assemblies.

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