Flexible circuit board winding and folding machine

Abstract

The utility model discloses a flexible circuit board winding and folding machine which comprises two supporting frames arranged at intervals, a driving motor, a rotating shaft, a winding and folding plate and at least one weight, the driving motor is fixedly arranged on one supporting frame, one end of the rotating shaft is connected with an output shaft of the driving motor, and the other end of the rotating shaft is connected with one end of the winding and folding plate. The other end of the winding and folding plate is rotatably arranged on the other supporting frame, one end of the flexible circuit board is fixedly arranged on the winding and folding plate, and the other end of the flexible circuit board protrudes out of the end portion of the winding and folding plate and is fixedly connected with the weight. The driving motor can drive the rotating shaft to rotate, then the winding and folding plate is driven to move together, the winding and folding angle and the winding and folding frequency of the winding and folding plate are controlled by controlling the rotating direction and the rotating speed of the driving motor, and the bending requirements of various flexible circuit boards are met. After the flexible circuit board is fixed on the winding and folding plate, a downward pulling force is provided by the weight, so that the bending part cannot shift, and the bending resistance of the flexible circuit board can be truly reflected.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing, in particular to a flexible circuit board folding machine. Background Art

[0002] A flexible circuit board is a printed circuit board made of polyimide or polyester film as the substrate, which has high reliability and excellent flexibility. It has the characteristics of high wiring density, light weight, thin thickness and good bending property. During the production process of the flexible circuit board, the bending performance of the circuit board is usually tested by a folding endurance tester.

[0003] The application fields of flexible circuit boards for different products of different customers are not the same, so the bending conditions of flexible circuit boards are also different. Some users need the flexible circuit board to be bent once, and some products need the flexible circuit board to be bent multiple times. For example, the flexible circuit board used for a folding screen needs to be folded tens of thousands or even hundreds of thousands of times. Therefore, how to test the number of bending times of the flexible circuit board and the circuit performance of the flexible circuit board after bending is a problem that is highly valued in this field.

[0004] For the bending test of flexible circuit boards, the traditional method is to use a round rod to perform 0°-180°-0° bending (bending from the horizontal plane to the other end horizontal plane to 180° and returning to the 0° horizontal plane is counted as 1 time) until the specified number of bending times is reached. In this bending test method, the force application position will shift during the bending process, resulting in the test conclusion being unable to truly reflect the bending resistance performance of the flexible part of the flexible circuit board, thus affecting the final experimental determination. During the test process, the line resistance cannot be monitored in a timely manner, and for special tests, the problems cannot be truly reflected. In addition, after a line break occurs, it is impossible to know the specific number of folding endurance in a timely manner, which affects the experimental determination.

[0005] In view of this, the utility model deeply conceives in response to the many deficiencies and inconveniences caused by the imperfect design of the existing flexible circuit board bending test structure, and actively researches, improves and tries to develop the present utility model. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a flexible circuit board folding machine that can meet the requirements of various bending degrees and bending times of various flexible circuit boards and truly reflect the bending performance of the flexible circuit board.

[0007] To achieve the above object, the solution of the utility model is as follows:

[0008] A flexible circuit board folding machine, which includes two support frames arranged at intervals, a driving motor, a rotating shaft, a folding plate and at least one weight. The driving motor is fixedly arranged on one of the support frames. One end of the rotating shaft is connected to the output shaft of the driving motor, and the other end of the rotating shaft is connected to one end of the folding plate. The other end of the folding plate is rotatably arranged on the other support frame. One end of the flexible circuit board is fixedly arranged on the folding plate, and the other end of the flexible circuit board protrudes outside the end of the folding plate and is fixedly connected to the weight.

[0009] Further, the flexible circuit board is fixed on the folding plate through a fixing jig, and the fixing jig is detachably arranged on the folding plate.

[0010] Further, the fixing jig includes an upper fixing plate and a lower fixing plate, and the flexible circuit board is arranged between the upper fixing plate and the lower fixing plate.

[0011] Further, a plurality of sets of corresponding screw holes are respectively arranged on the upper fixing plate, the lower fixing plate and the folding plate, and the upper fixing plate, the lower fixing plate and the folding plate are locked together by screws.

[0012] Further, a plurality of flexible circuit boards are arranged side by side on the folding plate or the fixing jig. Each flexible circuit board is respectively fixed with at least one weight, and the adjacent flexible circuit boards are arranged at intervals.

[0013] Further, the weight is fixed below the flexible circuit board or at the bottom end of the flexible circuit board through a tape.

[0014] Further, the two support frames are fixed at both ends of a bottom plate. The top of the support frame on the side corresponding to the driving motor is fixedly arranged on the motor mounting seat, and the driving motor is mounted on the motor mounting seat.

[0015] Further, a transfer plate is respectively arranged at both ends of the folding plate. One end of the two transfer plates is provided with corresponding limit slots. The two ends of the folding plate are respectively detachably fixed in the limit slots. One of the transfer plates is fixed together with the rotating shaft, and the other transfer plate is rotatably arranged at the top of the support frame.

[0016] After adopting the above structure, when the flexible circuit board folding machine of the present utility model is in use, the flexible circuit board is fixed on the folding board. One end of the flexible circuit board protrudes outside the folding board and is fixed to the weight. The weight always pulls down the flexible circuit board protruding outside the folding board. When the folding board rotates, a bent portion is formed at the edge position of the flexible circuit board corresponding to the folding board. The two support frames lift the folding board to facilitate the flipping of the folding board. One end of the folding board is connected to the rotating shaft, and the rotating shaft is connected to the driving motor. The driving motor can drive the rotating shaft to rotate, and then drive the folding board to move together. By controlling the steering and speed of the driving motor, the folding angle and folding times of the folding board can be controlled to meet the bending requirements of various flexible circuit boards. After the flexible circuit board is fixed on the folding board, the downward pulling force provided by the weight makes the bent portion not shift, so that the bending resistance performance of the flexible circuit board can be truly reflected. Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional exploded schematic diagram of the present utility model.

[0018] Figure 2 It is a three-dimensional combined schematic diagram of the present utility model.

[0019] Label Description:

[0020] 10. Flexible circuit board folding machine; 20. Flexible circuit board; 1. Support frame; 2. Driving motor; 21. Motor mounting seat; 3. Rotating shaft; 4. Folding board; 5. Weight; 6. Fixing jig; 61. Upper fixing plate; 62. Lower fixing plate; 7. Bottom plate; 8. Adapter plate; 81. Limit slot. Detailed Embodiment

[0021] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail through specific embodiments below.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0023] Such as Figure 1 And Figure 2As shown in the figure, the present utility model discloses a flexible circuit board folding machine 10, which includes two support frames 1 arranged at intervals, a driving motor 2, a rotating shaft 3, a folding plate 4 and at least one weight 5. The driving motor 2 is fixedly arranged on one of the support frames 1. One end of the rotating shaft 3 is connected to the output shaft of the driving motor 2, and the other end of the rotating shaft 3 is connected to one end of the folding plate 4. The other end of the folding plate 4 is rotatably arranged on the other support frame 1. One end of the flexible circuit board 20 is fixedly arranged on the folding plate 4, and the other end of the flexible circuit board 20 protrudes outside the end of the folding plate 4 and is fixedly connected to the weight 5.

[0024] When the flexible circuit board folding machine 10 of the present utility model is in use, the flexible circuit board 20 is fixed on the folding plate 4. One end of the flexible circuit board 20 protrudes outside the folding plate 4 and is fixed to the weight 5. The weight 5 always pulls the flexible circuit board 20 protruding outside the folding plate 4 downward by its weight. When the folding plate 4 rotates, a bending part is formed at the edge position of the flexible circuit board 20 corresponding to the folding plate 4. The two support frames 1 support the folding plate 4 at a high position to facilitate the flipping of the folding plate 4. One end of the folding plate 4 is connected to the rotating shaft 3, and the rotating shaft 3 is connected to the driving motor 2. The driving motor 2 can drive the rotating shaft 3 to rotate, and then drive the folding plate 4 to move together. By controlling the rotation direction and rotation speed of the driving motor 2, the folding angle and folding times of the folding plate 4 can be controlled. After the flexible circuit board 20 is fixed on the folding plate 4, the downward pulling force provided by the weight 5 prevents the bending part from shifting, so that the bending resistance performance of the flexible circuit board 20 can be truly reflected.

[0025] Preferably, the flexible circuit board is fixed on the folding plate 4 through a fixing fixture 6. The fixing fixture 6 is detachably arranged on the folding plate 4, and different fixing fixtures 6 can be designed according to different flexible circuit boards. The fixing fixture 6 includes an upper fixing plate 61 and a lower fixing plate 62. The flexible circuit board 20 is arranged between the upper fixing plate 61 and the lower fixing plate 62. There are various fixing methods for the fixing fixture 6 and the folding plate 4, such as screw locking or snap fitting, or other connection methods. In this embodiment, the screw locking method is adopted. Multiple groups of corresponding screw holes are respectively arranged on the upper fixing plate 61, the lower fixing plate 62 and the folding plate 4, and the upper fixing plate 61, the lower fixing plate 62 and the folding plate 4 are locked together by screws.

[0026] A plurality of flexible circuit boards 20 can be arranged side by side on the folding plate 4 or the fixing fixture 6. Each flexible circuit board 20 is respectively fixed with at least one weight 5, and adjacent flexible circuit boards 20 are arranged at intervals. Such a design can test multiple flexible circuit boards at one time, improving the test efficiency.

[0027] The weight 5 is fixed below the flexible circuit board 20 or at the bottom end of the flexible circuit board 20 through tape.

[0028] In this embodiment, the two support frames 1 are fixed at both ends of a bottom plate 7. The top of the support frame 1 corresponding to one side of the driving motor 2 is fixedly provided with a motor mounting seat 21, and the driving motor 2 is mounted on the motor mounting seat 21. Both ends of the folding plate 4 are respectively provided with an adapter plate 8. One end of the two adapter plates 8 is provided with corresponding limit slots 81. Both ends of the folding plate 4 are respectively detachably fixed in the limit slots 81, which is convenient for replacing the folding plate 4. One of the adapter plates 8 is fixed together with the rotating shaft, and the other adapter plate 8 is rotatably arranged at the top of the support frame 1. The utility model fixes the two support frames 1 on the bottom plate 7, which is convenient for handling and can meet different test environments or test sites. The folding plate 4 is designed into a detachable structure. When the folding plate 4 cannot meet the use requirements of special flexible circuit boards, the folding plate 4 can be disassembled and a folding plate 4 that meets the requirements can be installed, further improving the applicable range of the folding machine of the utility model.

[0029] The above embodiments and drawings do not limit the product form and style of the utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the utility model.

Claims

1. A flexible circuit board folding machine, characterized in that: It includes two support frames arranged at intervals, a driving motor, a rotating shaft, a folding plate and at least one weight, the driving motor is fixedly arranged on one of the support frames, one end of the rotating shaft is connected to the output shaft of the driving motor, the other end of the rotating shaft is connected to one end of the folding plate, the other end of the folding plate is rotatably arranged on the other support frame, one end of the flexible circuit board is fixedly arranged on the folding plate, and the other end of the flexible circuit board protrudes out of the end of the folding plate and is fixedly connected to the weight.

2. A flexible circuit board folding machine as claimed in claim 1, characterized in that: The flexible circuit board is fixed on the folding plate by a fixing fixture, and the fixing fixture is detachably arranged on the folding plate.

3. A flexible circuit board folding machine as claimed in claim 2, characterized in that: The fixing fixture comprises an upper fixing plate and a lower fixing plate, and the flexible circuit board is arranged between the upper fixing plate and the lower fixing plate.

4. A flexible circuit board folding machine as claimed in claim 3, characterized in that: The upper fixing plate, the lower fixing plate and the folding plate are respectively provided with a plurality of sets of screw holes corresponding to each other, and the upper fixing plate, the lower fixing plate and the folding plate are locked together by screws.

5. A flexible circuit board folding machine as claimed in claim 2, characterized in that: A plurality of flexible circuit boards are arranged side by side on the folding plate or the fixing fixture, each flexible circuit board is respectively fixed with at least one weight, and adjacent flexible circuit boards are arranged at intervals.

6. A flexible circuit board folding machine as claimed in claim 1, characterized in that: The weight is fixed below the flexible circuit board or at the bottom end of the flexible circuit board by means of adhesive tape.

7. A flexible circuit board folding machine as claimed in claim 1, characterized in that: The two support frames are fixed at two ends of a bottom plate, the top end of the support frame corresponding to one side of the driving motor is fixedly arranged on the motor mounting seat, and the driving motor is mounted on the motor mounting seat.

8. A flexible circuit board folding machine as claimed in claim 7, characterized in that: An adapter plate is respectively provided at both ends of the folding plate, and one end of the two adapter plates is provided with corresponding limiting slots, and the two ends of the folding plate are respectively detachably fixed in the limiting slots, one of the adapter plates is fixed together with the rotating shaft, and the other adapter plate is rotatably arranged on the top of the support frame.

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