An FPC detection device and an FPC detection method

Abstract

The application provides a FPC detection device and a FPC detection method, which comprise an assembly body, a servo motor, a screw rod, a sliding seat, a connecting assembly, a lower detection mechanism, a detection unit, an adjusting assembly, a guide rod and an upper detection mechanism. The application provides a FPC detection device and a FPC detection method. The device for fixing the FPC plate is moved out by the cooperation of the gear and the rack, so that the FPC plate can be better embedded. The distance between the limiting frame and the movable frame is adjusted by moving the movable limiting frame to the right, so that the FPC plates with different specifications and lengths can be fixed flexibly. The connecting assembly can be divided into two parts by the connection of the rotating part and the connecting part, so that the connecting assembly can be quickly disassembled from the assembly body. The length of the right end of the connecting part is lengthened by the connection of the second rotating part and the connecting part, so that the space for moving the lower detection mechanism and the upper detection mechanism to the right is increased. The right adjustment of the movable frame is matched, so that the connecting part does not abut against the limiting frame during the right movement, and the lower detection mechanism and the upper detection mechanism cannot continuously move to the right.

Description

Technical Field

[0001] This invention relates to the field of FPC testing, specifically to an FPC testing device and an FPC testing method. Background Technology

[0002] FPC (Flexible Printed Circuit) is a type of flexible printed circuit board made of polyimide or polyester film as a substrate. It is a flexible and rollable printed circuit and is an indispensable carrier or key connection method for aerospace, military, automotive and consumer electronics products. As electronic products develop towards being lighter, thinner, smaller and more compact, the precision and process complexity of FPC are increasing, which also puts forward more stringent requirements for FPC quality control.

[0003] Chinese Patent CN110596573A discloses an FPC testing device that solves the problems of low testing efficiency and incomplete testing of FPCs. However, in actual use, due to the diverse specifications of FPC boards and the fixed size of FPC fasteners, this device can only fix and test FPC boards of a single specification, which is quite limited. It cannot fix and test FPCs of multiple specifications. Furthermore, the length of its reciprocating plate and connecting plate is fixed and cannot be adjusted, resulting in poor flexibility. Moreover, it is difficult to disassemble the reciprocating plate and connecting plate from the testing support frame, which is not conducive to maintenance and replacement. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide an FPC testing device and an FPC testing method.

[0005] Based on this, the present invention proposes an FPC testing device and an FPC testing method, comprising an assembly, a servo motor, a lead screw, a slide block, a connecting component, a lower testing mechanism, a testing unit, an adjusting component, a guide rod, and an upper testing mechanism;

[0006] A servo motor is mounted on the top left side of the assembly, and the right end of the servo motor is connected to a lead screw drive via a coupling.

[0007] The right end of the lead screw is movably connected to the assembly, and the inner side of the bottom end of the slide is threadedly connected to the lead screw.

[0008] The bottom end of the connecting component is locked and fixed to the slide block with bolts, and the right end of the connecting component is locked and fixed to the lower detection mechanism and the upper detection mechanism respectively.

[0009] The bottom end of the lower detection mechanism is slidably connected to the assembly, and a detection unit is provided at its top end;

[0010] The adjustment component is installed inside the assembly, and the guide rod is fixed inside the assembly;

[0011] The upper detection mechanism is slidably connected to the guide rod, and a detection unit is also provided at its bottom end;

[0012] The adjustment assembly includes an outer cover, a motor, a gear, a rack, a guide block, a first mounting plate, a second mounting plate, a limiting frame, and a movable limiting frame. The outer cover is mounted on the right end of the assembly, and a motor is mounted inside it. The left end of the motor is connected to the gear transmission via a coupling. The top end of the gear meshes with the rack. A guide block is fixed to the right end of the rack, and the guide block is slidably connected to the outer cover. The right ends of the first and second mounting plates are respectively fixed to the rack. The front end of the limiting frame is fixed to the second mounting plate, and its rear end is fixed to the first mounting plate. The inner side of the movable limiting frame is slidably connected to the first and second mounting plates, and its right end is fixed to the outer cover.

[0013] Optionally, the movable limiting frame includes a movable frame, a rotating block, a threaded rod, a support base, an elastic plate, and a clamping plate. The inner side of the movable frame is slidably connected to the first mounting plate and the second mounting plate, respectively. The right end of the movable frame is rotatably connected to the rotating block, and the inner side of the rotating block is threadedly connected to the threaded rod. The right end of the threaded rod is fixed to the outer cover. The inner bottom end of the movable frame is fixed to the support base. The top end of the elastic plate is fixed to the movable frame, and the top end of the clamping plate is fixed to the elastic plate.

[0014] Optionally, the connecting assembly includes a mounting base, a rotating component, a connecting component, an inner guide rod, a connecting plate, a second rotating component, a fixed plate, and a buffer pad. The bottom end of the mounting base is locked and fixed to the slide block with bolts. The right end of the mounting base is rotatably connected to the rotating component, and the inner side of the rotating component is threadedly connected to the connecting component. The rear right end of the connecting component is fixed with an inner guide rod, which is slidably connected to the inside of the connecting plate. The left end of the connecting plate is rotatably connected to the second rotating component, and the inner side of the second rotating component is threadedly connected to the connecting component. The right end of the connecting plate is fixed with a fixed plate, and its left end is provided with a buffer pad. The right end of the fixed plate is locked and fixed to the lower detection mechanism and the upper detection mechanism respectively with bolts.

[0015] Optionally, the front end of the second mounting plate is provided with a limiting through hole, and the bottom end of the limiting through hole is flush with the top end of the support base, which facilitates the embedding of the FPC board.

[0016] Optionally, the movable frame, support base, elastic sheet, and clamping plate form a movable group. There are two movable groups, one of which is located at the right end of the limiting frame, which facilitates clamping and fixing the two ends of the FPC board. The clamping structure is simple, convenient, and efficient.

[0017] Optionally, a protective sleeve is provided on the outer side of the clamping plate to prevent excessive clamping force from damaging the FPC board. This protective sleeve is a rubber protective sleeve.

[0018] Optionally, the connector is provided with threaded connecting rods at the middle of the left end and the front end of the right end. These threaded connecting rods are threadedly connected to the rotating component and the second rotating component, respectively. The threaded connecting rod at the middle of the left end is used for disassembly, which facilitates the connection assembly to be split into two and quickly disassembled from the inside of the assembly, thus achieving disassembly at both ends. The threaded connecting rod at the front end of the right end is used to increase the overall length of the connection assembly and increase the length of the right end of the connector. This increases the space for the lower and upper detection mechanisms to move to the right, reducing the impact of the connector moving to the right and blocking the adjustment component, which prevents the lower and upper detection mechanisms from moving to the right. This is suitable for the detection of longer FPC boards.

[0019] Optionally, the movable frame is provided with sliding grooves at both the front and rear ends to facilitate sliding on the surfaces of the first mounting plate and the second mounting plate, and to cooperate with the movement of the rotating block and the threaded rod.

[0020] Optionally, the inner side of the outer cover is provided with a concave groove for limiting the sliding of the guide block.

[0021] The present invention has the following advantages: The present invention provides an FPC testing device and an FPC testing method through improvements, which have the following improvements compared with similar equipment:

[0022] Advantage 1: This invention provides an FPC testing device and an FPC testing method. By setting an adjustment component and using the cooperation of gears and racks, the device for fixing the FPC board is moved outward, which facilitates better embedding of the FPC board and improves the convenience of operation. Furthermore, by moving the movable limit frame to the right, the distance between the limit frame and the movable frame can be adjusted to flexibly fix FPC boards of different specifications and lengths, which is highly flexible.

[0023] Advantage 2: This invention provides an FPC testing device and FPC testing method. By setting up a connecting component, the connecting component can be split into two and quickly disassembled from the assembly body through the connection of the rotating part and the connecting part. Furthermore, the connection of the second rotating part and the connecting part makes it easy to lengthen the right end of the connecting part in the connecting component, thereby increasing the space for the lower and upper testing mechanisms to move to the right. In conjunction with the right adjustment of the movable frame, it avoids the situation where the connecting part abuts against the limit frame during the right movement, preventing the lower and upper testing mechanisms from being unable to move to the right continuously. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the movable limiting frame of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the movable limiting frame of the present invention;

[0030] Figure 7 This is an enlarged schematic diagram of the active group structure of the present invention;

[0031] Figure 8 This is a three-dimensional structural diagram of the connecting component of the present invention;

[0032] Figure 9 This is an enlarged structural diagram showing the details of the connection component of the present invention.

[0033] Explanation of reference numerals in the attached drawings: Assembly-1, Servo motor-2, Lead screw-3, Slide-4, Connecting component-5, Lower detection mechanism-6, Detection unit-7, Adjustment component-8, Guide rod-9, Upper detection mechanism-10, Outer cover-81, Motor-82, Gear-83, Rack-84, Guide block-85, First mounting plate-86, Second mounting plate-87, Limiting frame-88, Movable limiting frame-89, Movable frame-891, Rotating block-892, Threaded rod-893, Support base-894, Elastic sheet-895, Clamping plate-896, Mounting seat-51, Rotating component-52, Connecting component-53, Inner guide rod-54, Connecting plate-55, Second rotating component-56, Fixed plate-57, Buffer pad-58, Movable group-A. Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] Please refer to Figures 1-4This embodiment provides an FPC testing device and FPC testing method, comprising an assembly 1, a servo motor 2, a lead screw 3, a slide 4, a connecting component 5, a lower testing mechanism 6, a testing unit 7, an adjusting component 8, a guide rod 9, and an upper testing mechanism 10. The servo motor 2 is mounted on the top left side of the assembly 1, and the right end of the servo motor 2 is connected to the lead screw 3 via a coupling. The right end of the lead screw 3 is movably connected to the assembly 1, and the inner side of the bottom end of the slide 4 is threadedly connected to the lead screw 3. The bottom end of the connecting component 5 is bolted to the slide 4, and the right end of the connecting component 5 is bolted to both the lower testing mechanism 6 and the upper testing mechanism 10. The bottom end of the lower testing mechanism 6 is slidably connected to the assembly 1, and the top end of the lower testing mechanism 6 is provided with the testing unit 7. The adjusting component 8 is installed inside the assembly 1, and the guide rod 9 is fixed inside the assembly 1. The upper testing mechanism 10 is slidably connected to the guide rod 9, and the bottom end of the upper testing mechanism 10 is also provided with the testing unit 7. The adjusting component 8 includes an outer cover 81, a motor 82, a gear 83, and a rack 84. The assembly includes a guide block 85, a first mounting plate 86, a second mounting plate 87, a limiting bracket 88, and a movable limiting bracket 89. An outer cover 81 is mounted on the right end of the assembly 1, and a motor 82 is mounted inside it. The left end of the motor 82 is connected to a gear 83 via a coupling. The top end of the gear 83 meshes with a rack 84. A guide block 85 is fixed to the right end of the rack 84, and the guide block 85 is slidably connected to the outer cover 81. The right ends of the first mounting plate 86 and the second mounting plate 87 are respectively fixed to the rack 84. The front end of the limiting bracket 88 is fixed to the second mounting plate 87, and its rear end is fixed to the first mounting plate 86. The inner side of the movable limiting bracket 89 is slidably connected to the first mounting plate 86 and the second mounting plate 87 respectively, and its right end is fixed to the outer cover 81. The front end of the second mounting plate 87 is provided with a limiting through hole, and the bottom end of the limiting through hole is flush with the top end of the support base 894, which facilitates the embedding of the FPC board. The inner side of the outer cover 81 is provided with a concave sliding groove for the sliding limit of the guide block 85.

[0036] Please refer to Figures 5-7This embodiment provides an FPC testing device and an FPC testing method. The movable limiting frame 89 includes a movable frame 891, a rotating block 892, a threaded rod 893, a support base 894, an elastic sheet 895, and a clamping plate 896. The inner side of the movable frame 891 is slidably connected to the first mounting plate 86 and the second mounting plate 87, respectively. The rotating block 892 is rotatably connected to the right end of the movable frame 891. The inner side of the rotating block 892 is threadedly connected to the threaded rod 893. The right end of the threaded rod 893 is fixed to the outer cover 81. The support base 894 is fixed to the bottom of the inner side of the movable frame 891. The top end of the elastic sheet 895 is fixed to the movable frame 891. The clamping plate... The top of 896 is fixed to the elastic plate 895. The movable frame 891, the support base 894, the elastic plate 895, and the clamping plate 896 form the movable group A. There are two movable groups A. One group is located at the right end of the limit frame 88, which facilitates clamping and fixing the two ends of the FPC board. The clamping structure is simple, convenient, and efficient. The outer side of the clamping plate 896 is provided with a protective sleeve to prevent excessive clamping force from damaging the FPC board. The protective sleeve is a rubber protective sleeve. The front and rear ends of the movable frame 891 are provided with sliding grooves to facilitate sliding on the surfaces of the first mounting plate 86 and the second mounting plate 87, which cooperates with the movement of the rotating block 892 and the threaded rod 893.

[0037] Please refer to Figures 8-9 This embodiment provides an FPC testing device and an FPC testing method. The connecting assembly 5 includes a mounting base 51, a rotating component 52, a connecting component 53, an inner guide rod 54, a connecting plate 55, a second rotating component 56, a fixing plate 57, and a buffer pad 58. The bottom end of the mounting base 51 is bolted and locked to the slide block 4. The right end of the mounting base 51 is rotatably connected to the rotating component 52, and the inner side of the rotating component 52 is threadedly connected to the connecting component 53. The rear right side of the connecting component 53 is fixed with the inner guide rod 54, which is slidably connected to the inside of the connecting plate 55. The left end of the connecting plate 55 is rotatably connected to the second rotating component 56, and the inner side of the second rotating component 56 is threadedly connected to the connecting component 53. The right end of the connecting plate 55 is fixed with the fixing plate 57, and the left end is provided with a buffer pad 58. 8. The right end of the fixing plate 57 is bolted to the lower detection mechanism 6 and the upper detection mechanism 10 respectively. The middle of the left end and the front end of the right side of the connector 53 are provided with threaded connecting rods. The threaded connecting rods are threaded to the rotating part 52 and the second rotating part 56 respectively. The threaded connecting rod in the middle of the left end is used for disassembly, so that the connecting assembly 5 can be split into two and quickly disassembled from the inside of the assembly 1 to achieve disassembly at both ends. The threaded connecting rod at the front end of the right side is used to increase the overall length of the connecting assembly 5 and increase the length of the right end of the connector 53. This increases the space for the lower detection mechanism 6 and the upper detection mechanism 10 to move to the right, reducing the impact of the connector 53 moving to the right and blocking the adjusting assembly 8, which prevents the lower detection mechanism 6 and the upper detection mechanism 10 from moving to the right. This is suitable for the detection of longer FPC boards.

[0038] This invention provides an improved FPC detection device and FPC detection method, the working principle of which is as follows;

[0039] First: Start the motor 82, drive the gear 83 to rotate, and drive the rack 84 to move outward. During the outward movement, the guide block 85 guides the rack 84, which in turn drives the first mounting plate 86 and the second mounting plate 87 to move outward.

[0040] Second: Rotate the rotating block 892 so that the rotating block 892, in the threaded engagement with the threaded rod 893, drives the movable frame 891 to slide to the right on the first mounting plate 86 and the second mounting plate 87, adjusting the distance between the limit frame 88 and the movable frame 891 so that it conforms to the length of the batch of FPC boards.

[0041] Third: The FPC board is inserted through the limiting through hole at the front end of the second mounting plate 87. During the insertion process, the FPC board presses the clamping plate 896 upward, causing the elastic sheet 895 to deform. After the FPC board is fully inserted, the elastic restoring force of the elastic sheet 895 pushes the clamping plate 896 to apply a downward pressing force to the FPC board, thus fixing the FPC board. Then, the adjusting component 8 is reset to the inside of the assembly 1.

[0042] Fourth: Adjust the overall length of the connecting assembly 5 according to the length of the batch of FPC boards, so that the lower detection mechanism 6 and the upper detection mechanism 10 can increase the space to move to the right under the connection of the connecting assembly 5. By rotating the second rotating part 56, the connecting plate 55 moves to the right under the threaded connection with the connecting part 53. During the movement, the inner guide rod 54 slides inside the connecting plate 55 and plays a guiding role, thereby increasing the overall length of the connecting assembly 5.

[0043] Fifth: Start the servo motor 2, drive the lead screw 3 to rotate, drive the slide 4 and connecting component 5 to move, thereby pushing the lower detection mechanism 6 to slide in the assembly 1 and the upper detection mechanism 10 to slide on the guide rod 9. Through the left and right sliding of the lower detection mechanism 6 and the upper detection mechanism 10, the detection unit 7 is driven to scan the front and back of the FPC board to detect whether the FPC has defects, whether the position of the attached material is offset, whether it meets the tolerance range, and whether there is any missing material. If any of the above problems exist, the camera in the detection unit 7 will take pictures and record the location of the problem point.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An FPC testing device, characterized in that: It includes an assembly (1), a servo motor (2), a lead screw (3), a slide (4), a connecting component (5), a lower detection mechanism (6), a detection unit (7), an adjustment component (8), a guide rod (9), and an upper detection mechanism (10). A servo motor (2) is installed at the top left side of the assembly (1), and the right end of the servo motor (2) is connected to the lead screw (3) by a coupling. The right end of the lead screw (3) is movably connected to the assembly (1), and the inner side of the bottom end of the slide block (4) is threadedly connected to the lead screw (3). The bottom end of the connecting component (5) is locked and fixed to the slide (4) with bolts, and the right end of the connecting component (5) is locked and fixed to the lower detection mechanism (6) and the upper detection mechanism (10) respectively. The bottom end of the lower detection mechanism (6) is slidably connected to the assembly (1), and a detection unit (7) is provided at its top end. The adjustment component (8) is installed inside the assembly (1), and the guide rod (9) is fixed inside the assembly (1); The upper detection mechanism (10) is slidably connected to the guide rod (9), and a detection unit (7) is also provided at its bottom end. The connecting assembly (5) includes a mounting base (51), a rotating component (52), a connecting component (53), an inner guide rod (54), a connecting plate (55), a second rotating component (56), a fixing plate (57), and a buffer pad (58). The bottom end of the mounting base (51) is bolted and locked to the slide (4). The right end of the mounting base (51) is rotatably connected to the rotating component (52). The inner side of the rotating component (52) is threadedly connected to the connecting component (53). The right rear end of the connecting component (53) is fixed. An inner guide rod (54) is fixedly connected to the inside of the connecting plate (55). The left end of the connecting plate (55) is rotatably connected to a second rotating part (56). The inner side of the second rotating part (56) is threadedly connected to the connecting part (53). The right end of the connecting plate (55) is fixed with a fixing plate (57), and its left end is provided with a buffer pad (58). The right end of the fixing plate (57) is locked and fixed to the lower detection mechanism (6) and the upper detection mechanism (10) respectively by bolts. The adjustment assembly (8) includes an outer cover (81), a motor (82), a gear (83), a rack (84), a guide block (85), a first mounting plate (86), a second mounting plate (87), a limit bracket (88), and a movable limit bracket (89). The outer cover (81) is installed on the right end of the assembly (1), and the motor (82) is installed inside it. The left end of the motor (82) is connected to the gear (83) by a coupling. The top end of the gear (83) is meshed with the rack (84). (84) has a guide block (85) fixed at its right end. The guide block (85) is slidably connected to the outer cover (81). The right ends of the first mounting plate (86) and the second mounting plate (87) are respectively fixed to the rack (84). The front end of the limiting frame (88) is fixed to the second mounting plate (87), and its rear end is fixed to the first mounting plate (86). The inner side of the movable limiting frame (89) is slidably connected to the first mounting plate (86) and the second mounting plate (87), and its right end is fixed to the outer cover (81). The movable limiting frame (89) includes a movable frame (891), a rotating block (892), a threaded rod (893), a support base (894), an elastic sheet (895), and a clamping plate (896). The inner side of the movable frame (891) is slidably connected to the first mounting plate (86) and the second mounting plate (87), respectively. The right end of the movable frame (891) is rotatably connected to the rotating block (892). The inner side of the rotating block (892) is threadedly connected to the threaded rod (893). The right end of the threaded rod (893) is fixed to the outer cover (81). The bottom of the movable frame (891) is fixed to the support base (894). The top end of the elastic sheet (895) is fixed to the movable frame (891). The top end of the clamping plate (896) is fixed to the elastic sheet (895).

2. The FPC detection device according to claim 1, characterized in that, The front end of the second mounting plate (87) is provided with a limit hole.

3. The FPC detection device according to claim 1, characterized in that, The movable frame (891), the support base (894), the elastic sheet (895), and the clamping plate (896) constitute a movable group (A). The movable group (A) is provided in two sets, one of which is located at the right end of the limiting frame (88).

4. The FPC detection device according to claim 1, characterized in that, The clamping plate (896) is provided with a protective sleeve on its outer side.

5. The FPC detection device according to claim 1, characterized in that, The connector (53) is provided with threaded connecting rods at the middle of the left end and the front end of the right side, and the threaded connecting rods are threadedly connected to the rotating part (52) and the second rotating part (56) respectively.

6. The FPC detection device according to claim 1, characterized in that, The movable frame (891) is provided with sliding grooves at both the front and rear ends.

7. The FPC detection device according to claim 1, characterized in that, The inner side of the outer cover (81) is provided with a concave groove.

8. An FPC detection method using the FPC detection apparatus according to any one of claims 1 to 7, characterized in that, Includes the following steps: Step 1: Start the motor (82), drive the gear (83) to rotate, drive the rack (84) to move outward, and during the outward movement, the guide block (85) guides the rack (84), driving the first mounting plate (86) and the second mounting plate (87) to move outward; Step 2: Rotate the rotating block (892) so that the rotating block (892) drives the movable frame (891) to slide to the right on the first mounting plate (86) and the second mounting plate (87) under the threaded engagement with the threaded rod (893), and adjust the distance between the limit frame (88) and the movable frame (891) to match the length of the batch of FPC boards; Step 3: Insert the FPC board through the limiting through hole at the front end of the second mounting plate (87). During the insertion process, the FPC board presses the clamping plate (896) upward, causing the elastic sheet (895) to deform. After the FPC board is fully inserted, the clamping plate (896) is pushed by the elastic restoring force of the elastic sheet (895) to apply a downward pressing force to the FPC board and fix the FPC board. Then, the adjustment component (8) is reset to the inside of the assembly (1). Step 4: Adjust the overall length of the connecting assembly (5) according to the length of the batch of FPC boards so that the lower detection mechanism (6) and the upper detection mechanism (10) can increase the space to move to the right under the connection action of the connecting assembly (5). By rotating the second rotating part (56), the connecting plate (55) moves to the right under the threaded connection with the connecting part (53), thereby increasing the overall length of the connecting assembly (5). Step 5: Start the servo motor (2), drive the lead screw (3) to rotate, drive the slide (4) and connecting component (5) to move, thereby pushing the lower detection mechanism (6) to slide in the assembly (1) and the upper detection mechanism (10) to slide on the guide rod (9). Through the left and right sliding of the lower detection mechanism (6) and the upper detection mechanism (10), the detection unit (7) is driven to scan the front and back of the FPC board to detect whether the FPC has defects, whether the position of the pasted material is offset, whether it meets the tolerance range, and whether there is any missing material. If any of the above problems exist, the camera in the detection unit (7) will take pictures to record the location of the problem point.

Images