Defect detection device for large-size FPC (Flexible Printed Circuit)
By designing adjustment components and driving components in a large-size FPC flexible circuit board detection device, multi-angle rotation and horizontal adjustment of fill lights are achieved, which solves the problem of insufficient light in traditional detection technology, and improves detection accuracy and image quality.
Patent Information
- Application Number
- CN202421863949.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional vision detection technology is susceptible to factors such as light, temperature, and humidity when detecting large-sized FPC flexible circuit boards, especially the fixed angle of fill lights, which affects the accuracy of detection.
A large-size FPC flexible circuit board defect detection device is designed. Through the coordination of the adjustment components and the driving components, multi-angle rotation and horizontal adjustment of the fill light are realized to ensure that the circuit board receives sufficient light during the detection process.
Through multi-angle fill light and light adjustment, image quality and detection accuracy are improved, and the detection effect of large-sized circuit boards is enhanced.
Smart Images
Figure CN222952202U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of circuit board detection equipment, in particular to a large-size FPC flexible circuit board defect detection device. Background Art
[0002] With the development trend of electronic products towards high density and miniaturization, the use of FPC flexible circuit boards in electronic products will increase year by year, and the market prospects are promising. FPC flexible circuit boards need to be visually inspected during the production process to detect defects and defective products on the circuit boards. The development of large-size FPC flexible circuit board visual inspection technology has significant importance and broad application prospects in this field. With the continuous development of electronic products towards high density, miniaturization and high performance, FPC flexible circuit boards are one of the core components of electronic products. Their quality and reliability are crucial to the performance of the entire product. Therefore, efficient and accurate visual inspection of FPC flexible circuit boards has become an urgent need.
[0003] Traditional visual inspection technology is easily affected by factors such as light, temperature, and humidity during the inspection process, especially fill light. However, the angle of the fill light mostly adopts a fixed structure. During the shooting and inspection process, insufficient light will lead to a decline in image quality, and dust covering the surface of the visual inspection probe will also affect the accuracy of the inspection, resulting in problems such as slow inspection speed, low inspection accuracy, high false detection rate, and inability to inspect large-size circuit boards.
[0004] To this end, we provide a large-size FPC flexible circuit board defect detection device to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of the utility model is to provide a large-size FPC flexible circuit board defect detection device, which solves the problem that the visual inspection equipment in the prior art lacks a fill light adjustment function and a fixed fill light angle will lead to insufficient light, resulting in a decrease in image quality and affecting detection accuracy through the cooperation of an adjustment component and a drive component.
[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0007] The utility model is a large-size FPC flexible circuit board defect detection device, comprising a conveyor, a pallet is arranged on the top of the conveyor, a drive box is installed on the top of the conveyor, and a visual detection probe is arranged on the front side of the drive box;
[0008] The front side of the driving box is provided with an adjustment component, and the adjustment component includes a moving plate, and the moving plate is provided at the front side of the driving box, and a first motor is installed inside the moving plate, and an output end of the first motor is fixedly connected to a fixed shaft, and a rotating plate is fixedly connected to the surface of the fixed shaft, and a second motor is fixedly connected to the top of the rotating plate, and an output end of the second motor is fixedly connected to a rotating shaft, and a fill light is fixedly connected to the bottom of the rotating shaft;
[0009] A driving assembly is arranged inside the driving box, and the driving assembly includes a third motor. A threaded rod is fixedly connected to an output end of the third motor, and a moving sleeve is threadedly connected to a surface of the threaded rod.
[0010] The utility model is further configured that the rear side of the movable plate penetrates into the interior of the driving box and is fixedly connected to the movable sleeve, and a sliding groove is provided on the front side of the driving box.
[0011] The utility model is further configured that a start button box is installed on the front side of the conveyor, and a display is installed on the front side of the drive box.
[0012] The utility model is further configured such that a three-color alarm light is installed on the top of the driving box, and support seats are fixedly connected to both sides of the conveyor.
[0013] The utility model is further configured that a sliding sleeve is fixedly connected to the rear side of the movable sleeve, a sliding rod is slidably connected inside the sliding sleeve, and both sides of the sliding rod are fixedly connected to the inner wall of the driving box.
[0014] The utility model is further configured such that the top of the visual detection probe is fixedly connected to the movable plate, and the surface of the rotating shaft is movably connected to the inner wall of the rotating plate through a bearing.
[0015] The utility model is further configured that a mounting plate is fixedly connected to the surface of the rotating shaft, and a scraper is penetrated through one side of the mounting plate.
[0016] The utility model is further configured that a fixing bolt is threadedly connected to the front side of the scraper, and a clamping groove is opened on the front side of the mounting plate.
[0017] The utility model has the following beneficial effects:
[0018] Through the setting of the adjustment component, the utility model can drive the fill light to rotate around a fixed axis through the first motor during the process of the visual inspection probe inspecting the circuit board, so as to facilitate multi-angle fill light for the circuit board and increase the shooting and inspection effect of the circuit board. At the same time, the second motor can also be started to drive the fill light to perform horizontal adjustment, so as to realize the function of adjusting the fill light position and further improve the shooting and inspection effect.
[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.
[0021] Figure 1 It is a structural stereogram of a large-size FPC flexible circuit board defect detection device;
[0022] Figure 2 It is a top partial cross-sectional view of a driving box in a large-size FPC flexible circuit board defect detection device;
[0023] Figure 3 It is a side cross-sectional view of a moving plate in a large-size FPC flexible circuit board defect detection device;
[0024] Figure 4 A schematic diagram of the connection between a mounting plate and a scraper in a large-size FPC flexible circuit board defect detection device;
[0025] Figure 5 A schematic diagram of the rotation of a scraper in a large-size FPC flexible circuit board defect detection device.
[0026] In the attached figure: 1. conveyor; 2. support plate; 3. drive box; 4. visual inspection probe; 5. movable plate; 6. first motor; 7. fixed shaft; 8. rotating plate; 9. second motor; 10. rotating shaft; 11. fill light; 12. third motor; 13. threaded rod; 14. movable sleeve; 15. start button box; 16. display; 17. three-color alarm light; 18. support seat; 19. sliding sleeve; 20. sliding rod; 21. mounting plate; 22. scraper; 23. fixing bolt; 24. slot. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Specific embodiment 1
[0029] See also Figure 1-5The utility model is a large-size FPC flexible circuit board defect detection device, comprising a conveyor 1, a support plate 2 is arranged on the top of the conveyor 1, a drive box 3 is installed on the top of the conveyor 1, and a visual detection probe 4 is arranged on the front side of the drive box 3; an adjustment component is arranged on the front side of the drive box 3, and the adjustment component comprises a moving plate 5, and the moving plate 5 is arranged on the front side of the drive box 3. A first motor 6 is installed inside the moving plate 5, and a fixed shaft 7 is fixedly connected to the output end of the first motor 6, and a rotating plate 8 is fixedly connected to the surface of the fixed shaft 7, and a second motor 9 is fixedly connected to the top of the rotating plate 8, and a rotating shaft 10 is fixedly connected to the output end of the second motor 9, and a fill light 11 is fixedly connected to the bottom of the rotating shaft 10; a driving component is arranged inside the drive box 3, and the driving component comprises a third motor 12, and a threaded rod 13 is fixedly connected to the output end of the third motor 12, and a moving sleeve 14 is threadedly connected to the surface of the threaded rod 13.
[0030] Specifically: the product to be inspected is placed on the conveyor 1 by automatic loading or manual loading and unloading, and the start button is pressed to scan the first layer of products. At this time, when the object moves past the bottom of the visual inspection probe 4, the visual inspection probe 4 will scan line by line and collect image data. In the process of taking pictures, the sensor will receive the light reflected by the object illuminated by the fill light 11, and convert it into a charge signal. The charge signal is then converted into a voltage signal and digitized by an AD converter. The digitized pixel value finally presents the image characteristics of the target object. The whole process requires relative motion between the camera and the object, usually along the movement stroke of the conveyor 1. After scanning to the end position, a cycle of taking pictures is completed. Specific embodiment 2
[0032] See also Figure 1-5 On the basis of the specific embodiment 1, the rear side of the movable plate 5 penetrates into the interior of the driving box 3 and is fixedly connected to the movable sleeve 14, a sliding groove is provided on the front side of the driving box 3, a start button box 15 is installed on the front side of the conveyor 1, a display 16 is installed on the front side of the driving box 3, a three-color alarm light 17 is installed on the top of the driving box 3, support seats 18 are fixedly connected on both sides of the conveyor 1, a sliding sleeve 19 is fixedly connected to the rear side of the movable sleeve 14, a sliding rod 20 is slidably connected inside the sliding sleeve 19, and both sides of the sliding rod 20 are fixedly connected to the inner wall of the driving box 3, the top of the visual inspection probe 4 is fixedly connected to the movable plate 5, the surface of the rotating shaft 10 is movably connected to the inner wall of the rotating plate 8 through a bearing, a mounting plate 21 is fixedly connected to the surface of the rotating shaft 10, a scraper 22 is penetrated on one side of the mounting plate 21, a fixing bolt 23 is threadedly connected to the front side of the scraper 22, and a card slot 24 is provided on the front side of the mounting plate 21.
[0033] Specifically: the third motor 12 can drive the threaded rod 13 to rotate, and the threads on the surface of the threaded rod 13 can drive the movable sleeve 14 to move horizontally left and right. The sliding sleeve 19 slides on the surface of the sliding rod 20, and can limit the left and right movement of the movable sleeve 14. The bottom of the scraper 22 is made of metal, and the top of the scraper 22 is made of rubber. It can rotate under the drive of the rotating shaft 10. Then, driven by the first motor 6, the scraper 22 can be made into contact with the lens of the visual detection probe 4 to scrape off the dust on the surface of the visual detection probe 4 to achieve the cleaning effect.
[0034] The working principle of the utility model is as follows: the staff places the product to be inspected on the conveyor 1, presses the start button to convey the flexible circuit board, and when the flexible circuit board passes the bottom of the visual inspection probe 4, the visual inspection probe 4 scans line by line and collects image data. At this time, the fill light 11 is started to fill light the shooting position of the visual inspection probe 4 to improve the shooting inspection effect;
[0035] When the shooting detection data is blurred due to the fill light angle problem, the second motor 9 can be started by the external controller, and the second motor 9 cooperates with the rotating shaft 10 to drive the fill light 11 to rotate, so as to adjust the horizontal angle of the fill light and improve the fill light effect;
[0036] At the same time, the first motor 6 can also be started. The first motor 6 cooperates with the fixed shaft 7 to drive the rotating plate 8 to rotate. The rotating plate 8 cooperates with the rotating shaft 10 to drive the fill light 11 to rotate around the fixed shaft 7, thereby increasing the range of the fill light and allowing the surface of the flexible circuit board to obtain sufficient light, further improving the effect of shooting and detection.
[0037] The standard parts used in the present invention can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming by technicians in this field, which belongs to the common knowledge in this field. Therefore, the control method and circuit connection are no longer explained in detail in the present invention.
[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.
Claims
1. A large-size FPC flexible circuit board defect detection device, comprising a conveyor (1), characterized in that: A support plate (2) is arranged on the top of the conveyor (1), a drive box (3) is installed on the top of the conveyor (1), and a visual detection probe (4) is arranged on the front side of the drive box (3); The front side of the driving box (3) is provided with an adjustment component, and the adjustment component comprises a moving plate (5), the moving plate (5) is provided at the front side of the driving box (3), a first motor (6) is installed inside the moving plate (5), an output end of the first motor (6) is fixedly connected to a fixed shaft (7), a surface of the fixed shaft (7) is fixedly connected to a rotating plate (8), a top of the rotating plate (8) is fixedly connected to a second motor (9), an output end of the second motor (9) is fixedly connected to a rotating shaft (10), and a fill light (11) is fixedly connected to the bottom of the rotating shaft (10); A driving assembly is arranged inside the driving box (3), and the driving assembly comprises a third motor (12). A threaded rod (13) is fixedly connected to the output end of the third motor (12), and a moving sleeve (14) is threadedly connected to the surface of the threaded rod (13).
2. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: The rear side of the movable plate (5) penetrates into the interior of the driving box (3) and is fixedly connected to the movable sleeve (14); the front side of the driving box (3) is provided with a sliding groove.
3. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: A start button box (15) is installed on the front side of the conveyor (1), and a display (16) is installed on the front side of the drive box (3).
4. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: A three-color warning light (17) is installed on the top of the driving box (3), and support seats (18) are fixedly connected to both sides of the conveyor (1).
5. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: The rear side of the movable sleeve (14) is fixedly connected to a sliding sleeve (19), the interior of the sliding sleeve (19) is slidably connected to a sliding rod (20), and both sides of the sliding rod (20) are fixedly connected to the inner wall of the driving box (3).
6. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: The top of the visual detection probe (4) is fixedly connected to the movable plate (5), and the surface of the rotating shaft (10) is movably connected to the inner wall of the rotating plate (8) via a bearing.
7. A large-size FPC flexible circuit board defect detection device according to claim 1, characterized in that: A mounting plate (21) is fixedly connected to the surface of the rotating shaft (10), and a scraper plate (22) is provided through one side of the mounting plate (21).
8. A large-size FPC flexible circuit board defect detection device according to claim 7, characterized in that: The front side of the scraper (22) is threadedly connected with a fixing bolt (23), and the front side of the mounting plate (21) is provided with a clamping groove (24).