Load-bearing FPC bending device

Abstract

The utility model discloses a load type FPC bending device, which is characterized in that the load type FPC bending device comprises a case and a plurality of groups of bending modules arranged on the case at intervals, each bending module comprises a driving motor, a rotating shaft, a winding and folding plate, a plurality of weights and supports, the two supports are correspondingly arranged on the case at intervals, the driving motor is fixedly arranged on one support, and the rotating shaft is fixedly arranged on the other support. One end of the rotating shaft is connected with an output shaft of the driving motor, 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 support, a replaceable fixing jig is fixed to the winding and folding plate, one end of the FPC is fixed to the fixing jig, and the other end of the FPC is fixed to the winding and folding plate. The other end of the FPC protrudes out of the end part of the winding and folding plate and is fixedly connected with the weight, and the FPC and the edge of one end, corresponding to the weight, of the winding and folding plate or the fixing jig form a bending part. After the FPC is fixed on the fixing jig, downward pulling force is provided by the weight, so that the bending part does not shift, and the bending resistance of the FPC can be truly reflected.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing, in particular to a load-bearing FPC bending device. Background Art

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

[0003] The application fields of FPCs vary for different products of different customers, so the bending conditions of FPCs are also different. Some users require the FPC to be bent once, while some products require the FPC to be bent multiple times. For example, the FPC used in 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 FPC and the circuit performance of the FPC after bending is a problem that is highly valued in this field.

[0004] For the bending test of FPCs, the traditional method is to use a round rod to perform a 0°-180°-0° bend (one bend is from the horizontal plane to the other horizontal plane at 180° and back to the 0° horizontal plane). This is repeated until the specified number of bending times is reached. In this bending test method, the stressed 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 FPC, thereby 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 times 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 FPC bending test structure, and actively researches, improves, and develops the present utility model through trial production. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a load-bearing FPC bending device that can meet the requirements of various bending degrees and bending times of various FPCs and truly reflect the bending performance of the FPC.

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

[0008] A load-bearing FPC bending device, which comprises a chassis, multiple groups of bending modules arranged at intervals on the chassis. Each bending module includes a driving motor, a rotating shaft, a folding plate, multiple weights and a bracket. The two brackets are correspondingly arranged at intervals on the chassis. The driving motor is fixedly arranged on one of the brackets. 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 bracket. A replaceable fixing fixture is fixed on the folding plate. One end of the FPC is fixed on the fixing fixture, and the other end extends out of the end of the folding plate and is fixedly connected to the weight. A bending part is formed at the edge of the end of the FPC corresponding to the folding plate or the fixing fixture and the weight.

[0009] Further, the fixing fixture includes an upper fixing plate and a lower fixing plate, and the FPC is arranged between the upper fixing plate and the lower fixing plate.

[0010] Further, the fixing fixture and the folding plate are fixed together by means of screw locking. Multiple groups of corresponding screw holes are respectively arranged on the upper fixing plate, the lower fixing plate and the folding plate of the fixing fixture, and the upper fixing plate, the lower fixing plate and the folding plate are locked together by screws.

[0011] Further, multiple FPCs are arranged side by side on the fixing fixture. Each FPC is respectively fixed with at least one weight, and adjacent FPCs are arranged at intervals.

[0012] Further, the two brackets of each group of bending modules are fixedly arranged at intervals on the top plate of the chassis. Adjacent bending modules share a group of brackets or are arranged separately. A motor mounting seat for mounting the driving motor is provided on the bracket on the side corresponding to the driving motor, and the driving motor is mounted on the motor mounting seat.

[0013] 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, and both ends of the folding plate are respectively detachably fixed in the limit slots. One of the transfer plates is fixed to the rotating shaft, and the other transfer plate is rotatably arranged at the top of the bracket.

[0014] Further, an indicating module corresponding to the FPC is also provided on the fixing fixture, and the indicating module is connected to the FPC.

[0015] Further, each FPC has multiple lines. The indicating module includes an indicator light and an indicating circuit. The indicator light is mounted on the indicating circuit board. The indicating circuit board is provided with indicator lights corresponding to the number of FPC lines and corresponding to the FPC. The FPC is connected to the indicating circuit board through a cable connector, so that each line of the FPC corresponds to an indicator light.

[0016] Further, a power supply module for supplying power to the FPC is provided on the fixing fixture. A power connector corresponding to the FPC is provided on the power supply module. The power supply module is a mobile power supply or directly charges using a data cable.

[0017] Further, a control panel for connecting the driving motor and the FPC is provided on the chassis, and the control panel is connected to a display screen.

[0018] When the load-bearing FPC bending device of the present utility model is in use, the FPC is fixed on the fixing fixture. One end of the FPC protrudes outside the folding plate or the fixing fixture and is fixed to the weight. The weight pulls down the FPC protruding outside the folding plate or the fixing fixture. When the folding plate rotates, a bending part is formed at the edge position of the FPC corresponding to the folding plate or the fixing fixture; the two brackets lift the folding plate and the fixing fixture, facilitating the rotation of the folding plate. One end of the folding plate is connected to a rotating shaft, and the rotating shaft is connected to a driving motor. The driving motor can drive the rotating shaft to rotate, thereby driving the folding plate and the fixing fixture to move together. By controlling the rotation direction and speed of the driving motor, the bending angle and the number of bending times of the folding plate are controlled to realize the automatic bending test of the FPC. After the FPC is fixed on the fixing fixture, a downward pulling force is provided by the weight so that the bending part will not shift, thus truly reflecting the bending resistance performance of the FPC. The present utility model simultaneously sets multiple bending modules on the chassis. Each bending module can place multiple FPCs at the same time, greatly improving the bending test efficiency of the FPC. And the multiple bending modules are simultaneously arranged on one chassis, and multiple driving motors can be controlled simultaneously through the chassis, saving costs and space. The fixing fixture adopts a detachable structure and can be replaced with different fixing fixtures according to different FPCs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional exploded schematic diagram of the present utility model.

[0020] Figure 2 is a three-dimensional combined schematic Figure 1 .

[0021] Figure 3 is a three-dimensional combined schematic Figure 2 .

[0022] Figure 4 is a top view schematic diagram of the present utility model.

[0023] Figure 5 is a side view schematic diagram of the present utility model.

[0024] Label Description:

[0025] 1. Chassis; 2. Driving motor; 3. Rotating shaft; 4. Folding plate; 5. Weights; 6. Bracket; 61. Motor mounting base; 7. Fixing fixture; 71. Upper fixing plate; 72. Lower fixing plate; 8. Adapter plate; 81. Limit slot; 9. Display screen. Detailed implementation manner

[0026] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail through specific embodiments below.

[0027] In the description of the present invention, 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 positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] As Figures 1 to 5 shown, the present invention discloses a load-bearing FPC bending device, which includes a chassis 1, multiple groups of bending modules arranged at intervals on the chassis 1. Each bending module includes a driving motor 2, a rotating shaft 3, a folding plate 4, a plurality of weights 5 and two brackets 6. The two brackets 6 are correspondingly arranged at intervals on the chassis 1. The driving motor 2 is fixedly arranged on one of the brackets 6. 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 bracket 6. The folding plate 4 is fixed with a replaceable fixing fixture 7. One end of the FPC 20 is fixed on the fixing fixture 7, and the other end protrudes outside the end of the folding plate 4 and is fixedly connected to the weight 5. A bending part is formed at the edge of the end of the FPC 20 corresponding to the weight 5 on the folding plate 4 or the fixing fixture 7.

[0029] When the load-bearing FPC bending device of the present utility model is in use, a fixing jig 7 corresponding to the FPC 20 is used to fix the FPC 20 on the fixing jig 7. One end of the FPC 20 protrudes outside the folding plate 4 or the fixing jig 7 and is fixed to the weight 5. The weight of the weight 5 always pulls down the FPC 20 protruding outside the folding plate 4 or the fixing jig 7. When the folding plate 4 rotates, a bending part is formed at the edge position of the FPC 20 corresponding to the folding plate 4 or the fixing jig 7; the two brackets 6 support the folding plate 4 and the fixing jig 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, thereby driving the folding plate 4 and the fixing jig 7 to move together. By controlling the steering and speed of the driving motor 2, the bending angle and the number of bending times of the folding plate 4 are controlled to realize the automatic bending test of the FPC 20. After the FPC 20 is fixed on the fixing jig 7, the downward pulling force provided by the weight 5 prevents the bending part from shifting, so that the bending resistance performance of the FPC 20 can be truly reflected. In the present utility model, multiple bending modules are simultaneously arranged on the chassis 1, and each bending module can place multiple FPC 20s at the same time, greatly improving the bending test efficiency of the FPC 20. Moreover, multiple bending modules are simultaneously arranged on a chassis 1, and multiple driving motors 2 can be simultaneously controlled through the chassis 1, saving costs and space. The fixing jig 7 adopts a detachable structure, and different fixing jigs 7 can be replaced according to different FPC 20s.

[0030] In this embodiment, the fixing jig 7 includes an upper fixing plate 71 and a lower fixing plate 72. The FPC 20 is arranged between the upper fixing plate 71 and the lower fixing plate 72. There are various fixing methods for the fixing jig 7 and the folding plate 4, such as screw locking, snap fitting, or other connection methods. In this embodiment, the screw locking method is adopted, and multiple sets of corresponding screw holes are respectively arranged on the upper fixing plate 71, the lower fixing plate 72, and the folding plate 4, and the upper fixing plate 71, the lower fixing plate 72, and the folding plate 4 are locked together by screws.

[0031] Multiple FPC 20s can be arranged side by side on the fixing jig 7, and at least one weight 5 is respectively fixed to each FPC 20, and adjacent FPC 20s are spaced apart. Such a design can test multiple FPC 20s at a time, improving the test efficiency.

[0032] The weight 5 can be fixed below the FPC 20 or at the bottom end of the FPC 20 through tape. The weight is used to provide a downward pulling force on the FPC 20, so that the bending part of the FPC 20 is always stressed.

[0033] In this embodiment, the two brackets 6 of each bending module are fixedly spaced on the top plate of the chassis 1. Adjacent bending modules can share a set of brackets 6, or as Figures 1 to 5The above are provided separately. A motor mounting seat 61 for mounting the drive motor is provided on the bracket 6 corresponding to one side of the drive motor 2. The drive motor 2 is mounted on the motor mounting seat 61. Two adapter plates 8 are respectively provided at both ends of the folding plate 4. Limiting slots 81 corresponding to each other are provided at one ends of the two adapter plates 8. Both ends of the folding plate 4 are detachably fixed in the limiting slots 81, which is convenient for replacing the folding plate 4. One of the adapter plates 8 is fixed to the rotating shaft 3, and the other adapter plate 8 is rotatably provided at the top end of the bracket 6. The folding plate 4 is designed to be a detachable structure. When the folding plate 4 cannot meet the usage requirements of the special FPC 20, 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 present utility model.

[0034] In order to facilitate monitoring the bending condition of the FPC 20 and visually display the bending resistance effect of the FPC 20, an indicating module corresponding to the FPC 20 is further provided on the fixing fixture 7, and the indicating module is connected to the FPC 20. Each FPC 20 has multiple circuits. The indicating module includes indicating lights and an indicating circuit. The indicating lights are installed on the indicating circuit board. The indicating circuit board is provided with indicating lights corresponding to the number of FPC circuits and corresponding to the FPC. The FPC 20 is connected to the indicating circuit board through a cable connector, so that each circuit of the FPC 20 corresponds to an indicating light. When the FPC 20 is subjected to a bending test, the bending state of the FPC 20 can be visually displayed through the lighting and extinguishing of the indicating lights. The indicating module can also adopt a total indication method, that is, each FPC 20 is connected to an indicating light. Once a problem occurs in the circuit during the bending process of the FPC 20, the indicating light can judge whether the circuit of the FPC 20 is normal by lighting a red light or extinguishing. A power supply module for supplying power to the FPC 20 is provided on the fixing fixture 7. A power supply connector corresponding to the FPC 20 is provided on the power supply module. The power supply module can adopt a mobile power supply or directly use a data cable for charging.

[0035] In order to facilitate controlling the folding parameters, the present utility model is provided with a control panel connecting the drive motor 2 and the FPC. The control panel is connected to a display screen 9. The folding parameters, including the folding angle, folding times, etc., can be controlled through the control panel, and the folding times and state of the FPC 20 can be visually displayed through the display screen 9.

[0036] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the technical field to which it belongs shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. A load-bearing FPC bending device, characterized in that: include: A chassis, and multiple groups of bending modules arranged at intervals on the chassis, each bending module includes a driving motor, a rotating shaft, a folding plate, multiple weights and a bracket, two brackets are arranged on the chassis at corresponding intervals, the driving motor is fixedly arranged on one of the brackets, 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 bracket, the folding plate is fixed with a replaceable fixing fixture, one end of the FPC is fixed on the fixing fixture, and the other end protrudes to the outside of the end of the folding plate and is fixedly connected to the weight, and the FPC forms a bending portion with the edge of one end of the folding plate or the fixing fixture corresponding to the weight.

2. A load-bearing FPC bending device as claimed in claim 1, characterized in that: The fixing fixture comprises an upper fixing plate and a lower fixing plate, and the FPC is arranged between the upper fixing plate and the lower fixing plate.

3. A load-bearing FPC bending device as claimed in claim 2, characterized in that: The fixing fixture and the folding plate are fixed together by screw locking. The upper fixing plate, the lower fixing plate and the folding plate of the fixing fixture 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.

4. The load-bearing FPC bending device according to claim 1, characterized in that: A plurality of FPCs are arranged side by side on the fixing fixture, each FPC is respectively fixed with at least one weight, and adjacent FPCs are arranged at intervals.

5. The load-bearing FPC bending device according to claim 1, characterized in that: The two brackets of each bending module group are fixed on the top plate of the chassis at intervals. Adjacent bending modules share a group of brackets or are set separately. The bracket corresponding to the side of the drive motor is provided with a motor mounting seat for installing the drive motor, and the drive motor is installed on the motor mounting seat.

6. The load-bearing FPC bending device according to claim 1, 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. 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 bracket.

7. The load-bearing FPC bending device according to claim 1, characterized in that: The fixing fixture is also provided with an indication module corresponding to the FPC, and the indication module is connected to the FPC.

8. A load-bearing FPC bending device as claimed in claim 7, characterized in that: Each FPC has multiple circuits. The indication module includes an indicator light and an indication circuit. The indicator light is installed on an indication circuit board. The indication circuit board is provided with indicator lights corresponding to the number of FPC circuits and corresponding to the FPC. The FPC is connected to the indication circuit board through a cable connector so that each circuit of the FPC corresponds to an indicator light.

9. A load-bearing FPC bending device as claimed in claim 7 or 8, characterized in that: The fixing fixture is provided with a power module powered by FPC, and the power module is provided with a power connector corresponding to the FPC. The power module is a mobile power supply or is directly charged using a data cable.

10. The load-bearing FPC bending device according to claim 1, characterized in that: The chassis is provided with a control panel connected to the drive motor and the FPC, and the control panel is connected to the display screen.

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