FPC test tool

Abstract

The utility model discloses a kind of FPC test tool, including pedestal, controller, bending assembly, sensing component, counterweight assembly, first fixture and second fixture, first fixture is connected to pedestal by bending assembly, second fixture is connected to pedestal by counterweight assembly, controller electrically connects bending assembly and sensing component, and controller can electrically connect the line both ends of sample to be measured. This test tool adopts first fixture and second fixture to clamp and position FPC, and makes the line both ends of FPC electrically connect controller, to form loop, controller can drive bending assembly, so that bending assembly drives first fixture to rotate or swing, to repeatedly bend FPC. In the testing process, when FPC appears broken line condition or fracture condition, controller will stop driving bending assembly, so that test stops. The bending angle and strength of this test tool are relatively stable, can significantly improve the efficiency and accuracy of test, reduce labor and equipment cost.

Description

Technical Field

[0001] This utility model relates to the field of FPC manufacturing, and specifically to an FPC testing fixture. Background Technology

[0002] FPC, or flexible printed circuit board, requires bending tests before leaving the factory to meet customer installation needs and mechanical durability requirements. Electrical tests are also performed on the test points at the ends of the FPC to ensure its connectivity meets usage requirements. Traditional bending and electrical tests are done manually, resulting in high labor costs, low efficiency and bending accuracy, and inaccurate test results. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an FPC testing fixture that can improve testing efficiency and accuracy, and reduce labor and equipment costs.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: An FPC testing fixture includes a base, a controller, a bending component, a sensing component, a counterweight component, a first clamp, and a second clamp. The first clamp and the second clamp are respectively used to clamp the two ends of the sample to be tested. The first clamp is connected to the base through the bending component and can rotate or swing relative to the base under the drive of the bending component. The second clamp is connected to the base through the counterweight component and can straighten the sample to be tested between the first clamp and the second clamp under the action of the counterweight component. The controller is electrically connected to the bending component and the sensing component, and the controller can be electrically connected to the two ends of the circuit of the sample to be tested.

[0005] Compared to existing technologies, the advantages of this invention are as follows: When testing an FPC, a first clamp and a second clamp are used to hold both ends of the FPC respectively, and the two ends of the FPC's circuitry are electrically connected to the controller to form a circuit. Under the action of the counterweight component, the FPC between the first and second clamps is straightened. The controller can drive the bending component, causing the bending component to rotate or swing the first clamp, thereby repeatedly bending the FPC. During the test, if the FPC experiences a wire breakage, the circuit is broken, and the controller will stop driving the bending component, thus stopping the test. If the FPC breaks, the first and second clamps disconnect, the counterweight component moves downward under gravity, and is detected by the sensing component. The sensing component sends a signal to the controller, which will stop driving the bending component, thus stopping the test. After a set number of bending tests, if the fixture still does not malfunction, it indicates that the FPC's performance test meets the requirements. At this point, the test fixture can be automatically or manually stopped, and the FPC can be removed and stored. This test fixture uses a first clamp and a second clamp to hold and position the FPC. A bending component drives the first clamp to rotate or swing to bend the FPC. The bending angle and force are relatively stable, which can significantly improve the efficiency and accuracy of the test and reduce labor and equipment costs.

[0006] The aforementioned FPC testing fixture includes a bending component comprising a rocking stepper motor mounted on the base, and a first clamp fixedly connected to the output shaft of the rocking stepper motor, which can swing relative to the base under the drive of the rocking stepper motor.

[0007] The aforementioned FPC testing fixture has a pressing part in the first fixture. When the first fixture swings relative to the base, the pressing part can press against the sample to be tested.

[0008] The aforementioned FPC testing fixture has multiple sets of first clamps, each with a different radius (R) at its pressing part, and these multiple sets of first clamps can be interchangeably connected to the rocking stepper motor.

[0009] The bending component of the aforementioned FPC testing fixture also includes a dial, which is mounted on the base and coaxially mounted with the rocking stepper motor.

[0010] The aforementioned FPC testing fixture includes a counterweight assembly comprising a pulley, a counterweight block, and a flexible cable. The pulley is rotatably connected to the base, the flexible cable is wound around the groove of the pulley, and both ends of the flexible cable are respectively connected to the second clamp and the counterweight block.

[0011] The aforementioned FPC testing fixture includes a sensor in its sensing component, which is used to sense changes in the tension of the flexible cable or changes in the position of the counterweight or the second clamp.

[0012] The aforementioned FPC testing fixture has a base with a support plate located below the counterweight, and a buffer pad on the support plate.

[0013] The aforementioned FPC testing fixture has a device switch and an emergency stop button on its base. The device switch is electrically connected to the controller, and the emergency stop button is electrically connected to the bending assembly.

[0014] The aforementioned FPC testing fixture has a storage platform on its base, which is located below the first fixture.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the test fixture according to an embodiment of the present utility model; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] The following are the reference numerals: 100 Base, 110 Equipment Switch, 120 Emergency Stop Button, 130 Storage Platform, 200 Bending Component, 210 Swing Stepper Motor, 220 Dial, 300 Counterweight Component, 310 Pulley, 320 Counterweight Block, 330 Flexible Rope, 340 Support Plate, 350 Buffer Pad, 400 First Clamp, 410 Pressing Part, 420 Pointer, 500 Second Clamp, 600 FPC. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below, with reference to Figure 1This invention provides an FPC testing fixture, including a base 100, a controller, a bending component 200, a sensing component, a counterweight component 300, a first clamp 400, and a second clamp 500. The first clamp 400 and the second clamp 500 are respectively used to clamp the two ends of the sample to be tested. The first clamp 400 is connected to the base 100 through the bending component 200 and can rotate or swing relative to the base 100 under the action of the bending component 200. The second clamp 500 is connected to the base 100 through the counterweight component 300 and can straighten the sample to be tested between the first clamp 400 and the second clamp 500 under the action of the counterweight component 300. The controller is electrically connected to the bending component 200 and the sensing component, and the controller has a power cord, the positive and negative terminals of which are electrically connected to the two ends of the circuit of the sample to be tested. In this embodiment of the invention, the sample to be tested is an FPC 600 to be tested.

[0019] When testing the FPC600, the first clamp 400 and the second clamp 500 clamp the two ends of the FPC600 respectively, and the two ends of the FPC600's circuit are electrically connected to the controller to form a loop. At this time, under the action of the counterweight component 300, the FPC600 between the first clamp 400 and the second clamp 500 is straightened. The controller can drive the bending component 200, causing the bending component 200 to rotate or swing the first clamp 400, thereby repeatedly bending the FPC600. During the test, if the FPC600 experiences a wire breakage, the loop is broken, and the controller will stop driving the bending component 200, thus stopping the test. If the FPC600 breaks, the first clamp 400 and the second clamp 500 disconnect, the counterweight component 300 moves downward under gravity, and is detected by the sensing component. The sensing component sends a signal to the controller, which will stop driving the bending component 200, thus stopping the test. If the fixture does not malfunction after a set number of bending tests, it indicates that the FPC600's performance test meets the requirements. At this point, the test fixture can be automatically or manually stopped, and the FPC600 can be removed and stored. This test fixture uses a first clamp 400 and a second clamp 500 to hold and position the FPC600. The bending component 200 drives the first clamp 400 to rotate or swing to bend the FPC600. The bending angle and force are relatively stable, which can significantly improve the efficiency and accuracy of the test and reduce labor and equipment costs.

[0020] Furthermore, the base 100 is equipped with a device switch 110 and an emergency stop button 120. The device switch 110 is electrically connected to the controller and is used to control the power on and off of the entire test fixture. The emergency stop button 120 is electrically connected to the bending assembly 200 and can be used to stop the power supply to the bending assembly 200 in an emergency. The base 100 is also equipped with a storage platform 130, which is located below the first fixture 400. It can facilitate the storage of FPC 600 to be tested or after testing, as well as some operating tools.

[0021] In some embodiments, the bending assembly 200 includes a rocking stepper motor 210 mounted on the base 100, and a first clamp 400 fixedly connected to the output shaft of the rocking stepper motor 210, and capable of swinging relative to the base 100 under the drive of the rocking stepper motor 210. After presetting the bending angle and the number of bends, the controller can control the rocking stepper motor 210 to start, thereby driving the first clamp 400 to repeatedly swing relative to the base 100 according to the preset bending angle. Further, referring to... Figure 2 The first clamp 400 has a pressing part 410. When the first clamp 400 swings relative to the base 100, the pressing part 410 can press against the sample to be tested, thereby applying a bending force to the sample to be tested. During the continuous swinging process of the first clamp 400, the sample to be tested is repeatedly bent.

[0022] Furthermore, the first clamp 400 is provided in multiple sets, and the pressing parts 410 of the multiple sets of first clamps 400 have different R angles. The multiple sets of first clamps 400 are interchangeably connected to the rocking stepper motor 210. Before testing, a first clamp 400 with a suitable R angle can be selected according to process requirements, and then the selected first clamp 400 is installed on the rocking stepper motor 210 for subsequent testing. Furthermore, the bending assembly 200 also includes a dial 220, which is mounted on the base 100 and coaxially mounted with the body of the rocking stepper motor 210. A pointer 420 is provided on the first clamp 400. When the first clamp 400 swings relative to the base 100, the pointer 420 can indicate the swing angle for verification or adjustment. It should be noted that the body and output shaft of the rocking stepper motor 210 are not coaxial. Therefore, the dial 220 is coaxially mounted with the body of the rocking stepper motor 210, but not with the output shaft of the rocking stepper motor 210.

[0023] In some embodiments, the counterweight assembly 300 includes a pulley 310, a counterweight block 320, and a flexible cable 330. The pulley 310 is rotatably connected to the base 100 and has grooves on its periphery. The flexible cable 330 can be a rope, steel cable, etc., and can be wound around the grooves of the pulley 310. The two ends of the flexible cable 330 are respectively connected to the second clamp 500 and the counterweight block 320, and the weight of the counterweight block 320 is greater than the weight of the first clamp 400. During testing, the first clamp 400 and the second clamp 500 are clamped at both ends of the FPC 600, and under the action of the counterweight block 320, the FPC 600 is straightened between the first clamp 400 and the second clamp 500.

[0024] In some embodiments, the sensing component includes a sensor for sensing changes in the tension of the flexible cable 330 or changes in the position of the counterweight 320 or the second clamp 500. The sensor can be a tension sensor; when the FPC 600 breaks, the tension of the flexible cable 330 changes, which is detected by the tension sensor, which sends a signal to the controller, thereby controlling the bending assembly 200 to stop working. The sensor can also be a displacement sensor; when the FPC 600 breaks, the counterweight 320 moves downward and the second clamp 500 moves upward. The displacement sensor can detect the change in displacement of the counterweight 320 or the second clamp 500 and send a signal to the controller, thereby controlling the bending assembly 200 to stop working.

[0025] In some embodiments, a limiting component is also provided on the base 100 to prevent the second clamp 500 from falling off the base 100 by causing the counterweight 320 to fall over the pulley 310. Specifically, the position of the pulley 310 can be set higher, such that the distance between the pulley 310 and the top of the base 100 is smaller than the size of the second clamp 500. In this case, the top of the base 100 can act as a limiting component. When the second clamp 500 is moved upward by the counterweight 320, it will be blocked by the top of the base 100, thus preventing it from falling off the base 100 by crossing the pulley 310. In some other embodiments, a support plate 340 is provided below the counterweight 320. When the counterweight 320 falls, it lands on the support plate 340, at which point the second clamp 500 stops moving upward. This prevents the second clamp 500 from crossing the pulley 310 and falling off the base 100, and also eliminates the need for a limiting component, thus preventing a rigid impact between the second clamp 500 and the limiting component, thereby better protecting the second clamp 500. Furthermore, a buffer pad 350 is provided on the support plate 340 to prevent a rigid impact between the counterweight 320 and the support plate 340, protecting both the counterweight 320 and the support plate 340 and reducing collision noise.

[0026] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An FPC testing fixture, characterized in that, It includes a base (100), a controller, a bending component (200), a sensing component, a counterweight component (300), a first clamp (400) and a second clamp (500), wherein the first clamp (400) and the second clamp (500) are respectively used to clamp the two ends of the sample to be tested; The first clamp (400) is connected to the base (100) through the bending component (200) and can rotate or swing relative to the base (100) under the drive of the bending component (200). The second clamp (500) is connected to the base (100) through the counterweight component (300) and can straighten the sample to be tested between the first clamp (400) and the second clamp (500) under the action of the counterweight component (300). The controller is electrically connected to the bending component (200) and the sensing component, and the controller can be electrically connected to both ends of the circuit of the sample to be tested.

2. The FPC testing fixture according to claim 1, characterized in that, The bending assembly (200) includes a rocking stepper motor (210) mounted on the base (100), and the first clamp (400) is fixedly connected to the output shaft of the rocking stepper motor (210) and can swing relative to the base (100) under the drive of the rocking stepper motor (210).

3. The FPC testing fixture according to claim 2, characterized in that, The first clamp (400) has a pressing part (410), and when the first clamp (400) swings relative to the base (100), the pressing part (410) can press against the sample to be tested.

4. The FPC testing fixture according to claim 3, characterized in that, The first clamp (400) is provided in multiple sets, and the pressing parts (410) of the multiple sets of the first clamp (400) have different R angles. The multiple sets of the first clamp (400) are interchangeably connected to the rocking stepper motor (210).

5. The FPC testing fixture according to claim 2, characterized in that, The bending assembly (200) also includes a dial (220) which is mounted on the base (100) and coaxially mounted with the rocking stepper motor (210).

6. The FPC testing fixture according to claim 1, characterized in that, The counterweight assembly (300) includes a pulley (310), a counterweight block (320), and a flexible cable (330). The pulley (310) is rotatably connected to the base (100). The flexible cable (330) is wound around the groove of the pulley (310), and the two ends of the flexible cable (330) are respectively connected to the second clamp (500) and the counterweight block (320).

7. The FPC testing fixture according to claim 6, characterized in that, The sensing component includes a sensor for sensing changes in the tension of the flexible cable (330) or for sensing changes in the position of the counterweight (320) or the second clamp (500).

8. The FPC testing fixture according to claim 6, characterized in that, The base (100) is provided with a support plate (340), which is located below the counterweight (320), and the support plate (340) is provided with a buffer pad (350).

9. The FPC testing fixture according to claim 1, characterized in that, The base (100) is provided with a device switch (110) and an emergency stop button (120). The device switch (110) is electrically connected to the controller, and the emergency stop button (120) is electrically connected to the bending assembly (200).

10. The FPC testing fixture according to claim 1, characterized in that, The base (100) is provided with a storage platform (130), which is located below the first clamp (400).

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