Defect detection device for flexible circuit boards

Abstract

The utility model discloses a kind of defect detection devices of flexible circuit board, including machine body, fixed in the top of the machine body for conveying the conveyor belt of the flexible circuit board to be detected, for the appearance detection of flexible circuit board CCD vision camera, turnover mechanism, first horizontal moving mechanism, suction mechanism and lifting mechanism, first horizontal moving mechanism is located in conveyor belt side for driving the turnover mechanism moves along conveyor belt conveying direction, the turnover mechanism is for driving the CCD vision camera is turned upside down, the lifting mechanism is located in the conveyor belt side and in the conveying direction of the conveyor belt it is located in the back side of the turnover mechanism, the lifting mechanism is for driving the suction mechanism is raised and lowered, the suction mechanism is for sucking flexible circuit board. With CCD vision camera can be turned upside down and move, single CCD vision camera can automatically complete the photographing of flexible circuit board front and back, degree of automation is high, improve detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board testing technology, specifically relating to a defect detection device for flexible circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCs), also known as flexible printed circuit boards, are printed circuits made with a flexible insulating substrate. They are highly reliable and extremely flexible printed circuit boards made with polyimide or polyester film as the substrate. During the production process of FPCs, both internal and external functions need to be inspected. Internal functions are mainly detected through circuit connections, while external functions rely on visual inspection technology to detect surface defects. Currently, flexible circuit boards are typically transported using conveyor equipment. During transport, a CCD camera captures images of the circuit board's appearance and uploads them to a processing center for surface defect detection. However, existing CCD cameras can only photograph one side during transport; manual assistance is required to flip the board before photographing the other side, resulting in low inspection efficiency and potential damage to the flexible circuit board during the flipping process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a defect detection device for flexible circuit boards.

[0004] To solve the above-mentioned technical problems, the present invention provides a defect detection device for flexible circuit boards, comprising a body, a conveyor belt fixed to the top of the body for conveying the flexible circuit board to be inspected, a CCD vision camera for visual inspection of the flexible circuit board, a flipping mechanism, a first lateral movement mechanism, an adsorption mechanism, and a lifting mechanism. The lateral movement mechanism is located on one side of the conveyor belt and drives the flipping mechanism to move along the conveying direction of the conveyor belt. The flipping mechanism drives the CCD vision camera to flip up and down. The lifting mechanism is located on one side of the conveyor belt and is located behind the flipping mechanism in the conveying direction of the conveyor belt. The lifting mechanism drives the adsorption mechanism to lift up and down. The adsorption mechanism is used to pick up the flexible circuit board.

[0005] Furthermore, the first transverse movement mechanism includes two fixed plates spaced apart along the conveyor belt conveying direction, a threaded screw, a first drive motor, a guide rod, and a moving plate; the threaded screw is rotatably mounted between the two fixed plates, the first drive motor is fixed on one of the fixed plates, and the output end of the first drive motor is connected to one end of the threaded screw; the moving plate is provided with a threaded hole, and the moving plate is threadedly connected to the outside of the threaded screw through the threaded hole; the guide rod is fixed between the two fixed plates, and the moving plate is provided with a connecting hole adapted to the guide rod, and the moving plate is slidably connected to the guide rod through the connecting hole.

[0006] Furthermore, the flipping mechanism includes a mounting base, a rotating plate, and a second drive motor for driving the rotating plate to rotate. The mounting base is located on top of the moving plate, and the rotating plate is located above the conveyor belt along a conveying direction perpendicular to the conveyor belt. The second drive motor is located on the mounting base, and the output end of the second drive motor is connected to one end of the rotating plate. The CCD vision camera is located at the end of the rotating plate away from the mounting base.

[0007] Furthermore, a first lifting cylinder is provided between the mounting base and the movable plate. The first lifting cylinder is fixed to the top of the movable plate, and the mounting base is fixed to the output end of the first lifting cylinder.

[0008] Furthermore, the adsorption mechanism includes a suction cup frame fixedly connected to the lifting mechanism and a pneumatic suction cup fixed on the suction cup frame for adsorbing the flexible circuit board.

[0009] Furthermore, the lifting mechanism includes a second lifting cylinder connected to the machine body, and the output end of the second lifting cylinder is connected to the suction cup frame.

[0010] Furthermore, it also includes a second lateral movement mechanism, which drives the second lifting cylinder to move along a conveying direction perpendicular to the conveyor belt. The second lateral movement mechanism includes a support column, a mounting plate, and a lateral movement cylinder. The support column is located on one side of the conveyor belt, the lateral movement cylinder is fixed to the top of the support column, the mounting plate is fixed to the output end of the lateral movement cylinder, and the second lifting cylinder is fixedly connected to the mounting plate.

[0011] Furthermore, the support column is rotatably connected to the machine body, and a rotary power mechanism for driving the support column to rotate is provided on one side of the support column.

[0012] Furthermore, the rotary power mechanism includes a third drive motor, a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt; the third drive motor is fixed to the surface of the machine body, the driving synchronous pulley is fixed to the output shaft of the third drive motor, the driven synchronous pulley is fixed to the bottom of the support column, and the synchronous belt is connected between the driving synchronous pulley and the driven synchronous pulley.

[0013] Furthermore, the top of the machine body is provided with a good product collection box and a defective product collection box at the positions in front of and behind the support column.

[0014] This invention provides a defect detection device for flexible circuit boards. The device uses a conveyor belt to transport the flexible circuit board and a CCD vision camera to inspect it. The CCD vision camera can be flipped and moved, and together with the adsorption mechanism, it can automatically capture images of the front and back of the flexible circuit board. The device is highly automated, greatly reduces labor and costs, and improves efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the connection structure between the transverse mechanism and the flipping structure in one embodiment of this utility model.

[0017] Figure 3 This is an embodiment of the present utility model. Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 4 This is an embodiment of the present utility model. Figure 1 A magnified structural diagram at point B in the middle.

[0019] Figure 5 This is an embodiment of the present utility model. Figure 1 A magnified structural diagram at point C.

[0020] The labels in the attached drawings are as follows: 1. Machine body; 11. Good product collection box; 12. Defective product collection box; 13. Bearing; 2. Conveyor belt; 3. CCD vision camera; 4. Tilting mechanism; 41. Mounting base; 42. Rotating plate; 43. Second drive motor; 5. First transverse movement mechanism; 51. Fixed plate; 52. Threaded screw; 53. First drive motor; 54. Guide rod; 55. Moving plate; 551. Threaded hole; 552. Connecting hole; 6. Adsorption mechanism; 61. Suction cup frame; 62. Pneumatic suction cup; 7. Lifting mechanism; 71. Second lifting cylinder; 8. First lifting cylinder; 9. Transverse movement cylinder; 91. Support column; 92. Mounting plate; 93. Transverse movement cylinder; 10. Rotary power mechanism; 101. Third drive motor; 102. Active synchronous pulley; 103. Driven synchronous pulley; 104. Synchronous belt. Detailed Implementation

[0021] The following detailed implementation methods further illustrate the following:

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 This invention discloses a defect detection device for flexible circuit boards, comprising a body 1, a conveyor belt 2 fixed to the top of the body 1 for transporting the flexible circuit board to be inspected, and a CCD vision camera 3 for visual inspection of the flexible circuit board. It also includes a flipping mechanism 4 located on one side of the conveyor belt 2 for flipping the CCD vision camera 3, a first lateral movement mechanism 5 for driving the flipping mechanism 4, an adsorption mechanism 6 located above the conveyor belt 2 and behind the flipping mechanism 4 for adsorbing the flexible circuit board, and a lifting mechanism 7 for driving the adsorption mechanism 6 to rise and fall. This invention utilizes the conveyor belt 2 to transport the flexible circuit board, and the CCD vision camera 3 to inspect the flexible circuit board. The CCD vision camera 3 can flip and move, and after adsorbing the flexible circuit board with the adsorption mechanism 6, it rises. A single CCD vision camera 3 can automatically capture images of both the front and back of the flexible circuit board, achieving a high degree of automation, significantly reducing labor and costs, and improving efficiency.

[0023] In this embodiment, the machine body 1 has a rectangular box structure, the conveyor belt 2 is located on the top of the machine body 1, and the CCD vision camera 3 is located above the conveyor belt 2. During inspection, the flexible circuit board to be inspected is placed on the conveyor belt 2, and the conveyor belt 2 starts working to transport the flexible circuit board. When the flexible circuit board is transported to below the CCD vision camera 3, the CCD vision camera 3 performs appearance inspection on the upper surface of the flexible circuit board, captures an image, and transmits it to the image processing system for analysis. The CCD vision camera 3 and the conveyor belt 2 transport the flexible circuit board, and when it moves to below the adsorption mechanism 6, the adsorption mechanism 6 adsorbs the upper surface of the flexible circuit board. At this time, the lifting mechanism 7 lifts the adsorption mechanism 6, causing the flexible circuit board to move upwards towards the conveyor belt 2. In this embodiment, the adsorption mechanism 6 includes a suction cup frame 61 fixedly connected to the lifting mechanism 7 and a pneumatic suction cup 62 fixed on the suction cup frame 61 to adsorb the flexible circuit board. The adsorption mechanism 6 employs a combination of a suction cup frame 61 and a pneumatic suction cup 62. The pneumatic suction cup 62 reliably picks up the flexible circuit board, while the suction cup frame 61 serves to fix and connect, ensuring a stable adsorption process and providing a foundation for subsequent handling and sorting of the circuit board. The lifting mechanism 7 includes a second lifting cylinder 71 connected to the machine body 1, with its output end connected to the suction cup frame 61. To install the second lifting cylinder 71, a second transverse mechanism 9 is also provided on the machine body 1. The second transverse mechanism 9 drives the second lifting cylinder 71 to move along a direction perpendicular to the conveyor belt 2. The second transverse mechanism 9 includes a support column 91, a mounting plate 92, and a transverse cylinder 93. The support column 91 is located on one side of the conveyor belt 2, the transverse cylinder 93 is fixed to the top of the support column 91, the mounting plate 92 is fixed to the output end of the transverse cylinder 93, and the second lifting cylinder 71 is fixedly connected to the mounting plate 92. By setting the second transverse mechanism 9, the second lifting cylinder 71 and the adsorption mechanism 6 can be driven to move in a direction perpendicular to the conveyor belt 2, which increases the movement dimension of the adsorption mechanism 6, so that the adsorption mechanism 6 can be moved and adjusted according to the position of the flexible circuit board on the conveyor belt 2, thereby ensuring more stable adsorption.

[0024] After the adsorption mechanism 6 lifts the flexible circuit board, since the adsorption mechanism 6 is located behind the CCD vision camera 3, the CCD vision camera 3 needs to be moved to the position of the adsorption mechanism 6 and then flipped by the flipping mechanism 4 to capture the lower surface of the flexible circuit board. In this embodiment, the first transverse mechanism 5 includes two fixed plates 51 spaced apart along the conveying direction of the conveyor belt 2, a threaded screw 52, ​​a first drive motor 53, a guide rod 54, and a moving plate 55. Specifically, the threaded screw 52 is rotatably mounted between the two fixed plates 51, the first drive motor 53 is fixed on one of the fixed plates 51, and the output end of the first drive motor 53 is connected to one end of the threaded screw 52. The moving plate 55 is provided with a threaded hole 551, and the moving plate 55 is threadedly connected to the outside of the threaded screw 52 through the threaded hole 551. The guide rod 54 is fixed between the two fixed plates 51, and the moving plate 55 is provided with a connecting hole 552 that matches the guide rod 54. The moving plate 55 is slidably connected to the guide rod 54 through the connecting hole 552. The flipping mechanism 4 includes a mounting base 41, a rotating plate 42, and a second drive motor 43 that drives the rotating plate 42 to rotate. The mounting base 41 is located on top of the moving plate 55. The rotating plate 42 is positioned above the conveyor belt 2 along a direction perpendicular to the conveying direction of the conveyor belt 2. The second drive motor 43 is mounted on the mounting base 41, and its output end is connected to one end of the rotating plate 42. The CCD vision camera 3 is located at the end of the rotating plate 42 away from the mounting base 41. When movement is required, the first drive motor 53 is started first, which drives the threaded screw 52 to rotate. Since the moving plate 55 is threadedly connected to the threaded screw 52 through the threaded hole 551 and slidably connected to the guide rod 54 through the connecting hole 552, the moving plate 55 moves along the guide rod 54 in the conveying direction of the conveyor belt 2 when the threaded screw 52 rotates. The mounting base 41 is located on top of the moving plate 55. When the moving plate 55 moves along the conveyor belt 2, the mounting base 41 and the rotating plate 42 move accordingly, thereby driving the CCD vision camera 3 to move along the conveyor belt 2. When the CCD vision camera 3 moves to the position of the adsorption mechanism 6, it is located on the lower surface of the flexible circuit board. At this time, the second drive motor 43 is activated to drive the rotating plate 42 to rotate, thereby causing the CCD vision camera 3 to rotate and capture images of the lower surface of the flexible circuit board, which are then transmitted to the image processing system for analysis. Since the lifting mechanism 7 has a certain height relative to the lifting of the adsorption mechanism 6, in order to allow the CCD vision camera 3 to fit more closely to the lower surface of the flexible circuit board for imaging, a first lifting cylinder 8 is provided between the mounting base 41 and the moving plate 55. The first lifting cylinder 8 is fixed to the top of the moving plate 55, and the mounting base 41 is fixed to the output end of the first lifting cylinder 8. By setting the first lifting cylinder 8, the CCD vision camera 3 can be driven closer to the lower surface of the flexible circuit board, increasing the imaging distance and improving the detection effect.

[0025] After both the upper and lower surfaces of the flexible circuit boards are inspected, in order to classify and store the inspected flexible circuit boards, a good product collection box 11 and a defective product collection box 12 are provided at the top of the machine body 1, located in front of and behind the support column 91. The support column 91 is rotatably connected to the machine body 1, and a rotary power mechanism 10 for driving the rotation of the support column 91 is provided on one side of the support column 91. Specifically, the rotary power mechanism 10 includes a third drive motor 101, a driving synchronous pulley 102, a driven synchronous pulley 103, and a synchronous belt 104. The third drive motor 101 is fixed to the surface of the machine body 1, the driving synchronous pulley 102 is fixed to the output shaft of the third drive motor 101, the driven synchronous pulley 103 is fixed to the bottom of the support column 91, and the synchronous belt 104 is drivingly connected between the driving synchronous pulley 102 and the driven synchronous pulley 103. If the test result is a good product, the third drive motor 101 starts, driving the support column 91 to rotate via the active synchronous wheel 102, synchronous belt 104, and driven synchronous wheel 103, adjusting the position of the adsorption mechanism 6, and placing the flexible circuit board adsorbed on the suction cup 62 into the good product collection box 11. After completing the operation, it is rotated back to the appropriate position for subsequent operations. If the test result is a defective product, the third drive motor 101 also starts, driving the support column 91 to rotate via the active synchronous wheel 102, synchronous belt 104, and driven synchronous wheel 103, adjusting the position of the adsorption mechanism 6, and placing the flexible circuit board adsorbed on the suction cup 62 into the defective product collection box 12. After completing the operation, it is rotated back to the appropriate position for subsequent operations.

[0026] The flexible circuit board defect detection device provided by this utility model has the following beneficial effects: By setting up a flipping mechanism and a lateral movement mechanism, the CCD vision camera can automatically flip up and down during the flexible circuit board transportation process. Combined with the adsorption mechanism for adsorbing the flexible circuit board, a single CCD vision camera can complete the imaging of the upper and lower surfaces of the flexible circuit board without manual intervention, thus significantly improving detection efficiency, reducing labor costs, and consequently reducing overall production costs. The good product collection box and defective product collection box set at the top of the machine can automatically classify and collect the inspected flexible circuit boards, further improving the automation level of the device.

[0027] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A defect detection device for flexible circuit boards, comprising a body, a conveyor belt fixed to the top of the body for conveying the flexible circuit board to be inspected, and a CCD vision camera for visual inspection of the flexible circuit board, characterized in that: It also includes a flipping mechanism, a first lateral movement mechanism, an adsorption mechanism, and a lifting mechanism. The first lateral movement mechanism is located on one side of the conveyor belt and is used to drive the flipping mechanism to move along the conveying direction of the conveyor belt. The flipping mechanism is used to drive the CCD vision camera to flip up and down. The lifting mechanism is located on one side of the conveyor belt and is located behind the flipping mechanism in the conveying direction of the conveyor belt. The lifting mechanism is used to drive the adsorption mechanism to lift up and down. The adsorption mechanism is used to pick up the flexible circuit board.

2. The defect detection device for flexible circuit boards according to claim 1, characterized in that: The first transverse movement mechanism includes two fixed plates spaced apart along the conveyor belt conveying direction, a threaded screw, a first drive motor, a guide rod, and a moving plate. The threaded screw is rotatably mounted between the two fixed plates. The first drive motor is fixed on one of the fixed plates, and its output end is connected to one end of the threaded screw. The moving plate has a threaded hole, and is threadedly connected to the outside of the threaded screw through the threaded hole. The guide rod is fixed between the two fixed plates, and the moving plate has a connecting hole adapted to the guide rod. The moving plate is slidably connected to the guide rod through the connecting hole.

3. The defect detection device for flexible circuit boards according to claim 2, characterized in that: The flipping mechanism includes a mounting base, a rotating plate, and a second drive motor that drives the rotating plate to rotate. The mounting base is located on top of the moving plate, and the rotating plate is located above the conveyor belt along a conveying direction perpendicular to the conveyor belt. The second drive motor is located on the mounting base, and the output end of the second drive motor is connected to one end of the rotating plate. The CCD vision camera is located at the end of the rotating plate away from the mounting base.

4. The defect detection device for flexible circuit boards according to claim 3, characterized in that: A first lifting cylinder is provided between the mounting base and the movable plate. The first lifting cylinder is fixed to the top of the movable plate, and the mounting base is fixed to the output end of the first lifting cylinder.

5. The defect detection device for flexible circuit boards according to claim 1, characterized in that: The adsorption mechanism includes a suction cup frame fixedly connected to the lifting mechanism and a pneumatic suction cup fixed on the suction cup frame for adsorbing the flexible circuit board.

6. The defect detection device for flexible circuit boards according to claim 5, characterized in that: The lifting mechanism includes a second lifting cylinder connected to the machine body, and the output end of the second lifting cylinder is connected to the suction cup frame.

7. The defect detection device for flexible circuit boards according to claim 6, characterized in that: It also includes a second lateral movement mechanism, which drives the second lifting cylinder to move along a conveying direction perpendicular to the conveyor belt. The lateral movement mechanism includes a support column, a mounting plate, and a lateral movement cylinder. The support column is located on one side of the conveyor belt, the lateral movement cylinder is fixed to the top of the support column, the mounting plate is fixed to the output end of the lateral movement cylinder, and the second lifting cylinder is fixedly connected to the mounting plate.

8. The defect detection device for flexible circuit boards according to claim 7, characterized in that: The support column is rotatably connected to the machine body, and a rotary power mechanism for driving the support column to rotate is provided on one side of the support column.

9. The defect detection device for flexible circuit boards according to claim 8, characterized in that: The rotary power mechanism includes a third drive motor, a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt; the third drive motor is fixed to the surface of the machine body, the driving synchronous pulley is fixed to the output shaft of the third drive motor, the driven synchronous pulley is fixed to the bottom of the support column, and the synchronous belt is connected between the driving synchronous pulley and the driven synchronous pulley.

10. The defect detection device for flexible circuit boards according to claim 9, characterized in that: The top of the machine body is provided with a good product collection box and a defective product collection box at the positions in front of and behind the support column.

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