Flexible circuit board sorting and conveying device based on multiple cameras

Abstract

The utility model relates to a flexible circuit board sorting and conveying device based on multiple cameras, which comprises a support frame, and is characterized in that the support frame is provided with a conveying assembly which is arranged along the length direction of the support frame and is used for conveying a flexible circuit board to be detected from one end to the other end; the image acquisition assembly comprises a camera support, camera sliding rails and camera bodies, the camera sliding rails are installed on the upper portion of the camera support, the multiple camera sliding rails are evenly arranged in the conveying direction of the flexible circuit board, one camera body is slidably installed on each camera sliding rail, and the camera bodies are arranged in a trapezoid shape; the multiple flattening assemblies are in one-to-one correspondence with the camera bodies, and the flattening assemblies can flatten the flexible circuit boards located below the flattening assemblies; and the sorting assembly can blow the unqualified products away from the conveying assembly. According to the utility model, high-precision visual detection can be effectively carried out on the flexible circuit board, and automatic sorting can be carried out according to the detection result.

Description

Technical Field

[0001] The utility model relates to a sorting and conveying device, in particular to a flexible circuit board sorting and conveying device based on multiple cameras, belonging to the technical field of circuit board detection. Background Art

[0002] A flexible printed circuit board (abbreviated as FPC) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film. During the production process of flexible circuit boards, visual inspection of the finished products is required to determine whether there are defects on their surfaces.

[0003] During the detection process of flexible circuit boards, due to the characteristics of FPC materials, the situation of warping on the board surface often occurs. This warping will not only affect the imaging quality of the detection equipment, but also may lead to inaccurate detection results. Especially when using visual detection technology, the unevenness of the circuit board surface will cause light reflection, resulting in the so-called "glare" phenomenon. This phenomenon will interfere with the image acquisition and analysis of the visual detection system, and further affect the accurate identification of the surface detection of flexible circuit boards.

[0004] Therefore, this application designs a flexible circuit board sorting and conveying device based on multiple cameras. Content of the Utility Model

[0005] The utility model mainly aims at the above problems existing in the prior art, and provides a flexible circuit board sorting and conveying device based on multiple cameras.

[0006] The purpose of the utility model is mainly achieved through the following solutions:

[0007] The flexible circuit board sorting and conveying device based on multiple cameras includes a support frame, on which are installed: a conveying component, which is arranged along the length direction of the support frame and is used to convey the flexible circuit board to be detected from one end to the other end; an image acquisition component, which includes a camera support, a camera slide rail and a camera body. The camera slide rail is installed on the upper part of the camera support and is evenly provided with a plurality along the conveying direction of the flexible circuit board. Each camera slide rail is slidably installed with a camera body, and the camera bodies are arranged in a trapezoidal shape; a flattening component, which is provided with a plurality and corresponds to the camera bodies one by one, and the flattening component can flatten the flexible circuit board located below it; a sorting component, which includes a blower, a connecting pipe and a blowing box. The blower is installed on the upper surface of the support frame, the air outlet of the blower is connected with the blowing box through the connecting pipe, and the blowing box is installed on one side of the rear end of the conveying component.

[0008] Preferably, the camera bracket is a U-shaped frame with an opening facing downward. The four corners of its bottom are respectively located on both sides of the conveying component and are detachably and fixedly installed on the support frame.

[0009] Preferably, both ends of the camera slide rail are fixedly installed between the inner walls of the upper sides of the camera bracket.

[0010] Preferably, slide bars are symmetrically arranged on both sides of the camera slide rail. The upper end of the camera body is fixedly connected with a sliding block. The sliding block is a U-shaped structure with an opening facing upward, and sliding grooves for cooperating with the slide bars are symmetrically formed on the inner walls of its two sides. The sliding block can move along the length direction of the camera slide rail through the cooperation of the sliding grooves and the slide bars.

[0011] Preferably, a clamping bolt is threadedly connected to one side of the sliding block. The inner end of the clamping bolt can pass through the sliding block and contact the outer wall of the slide bar.

[0012] Preferably, the flattening component includes two groups of support plates respectively located on both sides of the conveying component. Each group of support plates has two. The support plates are all U-shaped plates, and the U-shaped openings of the two groups of support plates are arranged oppositely. A driving member is arranged on the upper surface of one of the support plates, and a pressing plate body is arranged between the two groups of support plates. The driving member can drive the pressing plate body to move up and down.

[0013] Preferably, the output shaft of the driving member passes through the upper part of the support plate and is fixedly connected with a threaded rod. The lower end of the threaded rod is rotatably connected to the lower part of the corresponding support plate.

[0014] Preferably, guide rods are vertically installed on the inner sides of the other three support plates.

[0015] Preferably, a fixing plate is arranged at each of the four corners of the pressing plate body. Three of the fixing plates are slidably connected to the corresponding guide rods, and the other fixing plate is threadedly connected to the corresponding threaded rod.

[0016] Preferably, the pressing plate body is made of single-sided frosted glass.

[0017] Therefore, compared with the prior art, the present utility model has the following advantages:

[0018] (1) Through the arranged conveying component, the present utility model undertakes the work of conveying the flexible circuit board and can ensure that the flexible circuit board smoothly passes through the detection area below the image acquisition component;

[0019] (2) Through the camera bracket and camera slide rail provided by the present utility model, the camera bracket can provide a stable installation platform for the camera body, ensuring the stability and reliability of the camera body during imaging. The camera slide rail enables the camera body to move along a certain trajectory to meet the detection requirements of flexible circuit boards of different sizes, ensuring that the images captured by the camera body can be seamlessly stitched to form a complete image of the flexible circuit board.

[0020] (3) Through the flattening component provided by the present utility model, uniform pressure can be applied when the flexible circuit board passes through the corresponding detection area, thereby maintaining its flatness and avoiding detection errors caused by warping. In addition, the pressing plate body is made of single-sided frosted glass, which helps to reduce light reflection and improve the imaging quality of the camera body.

[0021] (4) Through the sorting component provided by the present utility model, unqualified flexible circuit boards can be blown off from the conveying component. Through automated detection and sorting, the need for manual inspection and possible errors are significantly reduced, while the quality and efficiency of the entire production process are improved. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is the front view of the present utility model;

[0024] Figure 3 is the top view of the present utility model;

[0025] Figure 4 is the side view of the present utility model;

[0026] Figure 5 is the installation schematic diagram of the camera slide rail and the camera body in the present utility model;

[0027] Figure 6 is the schematic structural diagram of the flattening component in the present utility model.

[0028] Illustration: 1 - Support frame, 2 - Conveying component, 3 - Camera bracket, 4 - Camera slide rail, 5 - Camera body, 6 - Blower, 7 - Connecting pipe, 8 - Blowing box, 9 - Slide bar, 10 - Sliding block, 11 - Chute, 12 - Clamping bolt, 13 - Support plate, 14 - Driving part, 15 - Pressing plate body, 16 - Threaded rod, 17 - Guide rod, 18 - Fixed plate. Detailed Embodiment

[0029] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the implementation of the present utility model is not limited to the following embodiments, and any formal modification and / or change made to the present utility model will fall within the protection scope of the present utility model.

[0030] In the present utility model, unless otherwise specified, all parts and percentages are in weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments are conventional methods in the art unless otherwise specified. The components or equipment in the following embodiments are general standard parts or components known to those skilled in the art unless otherwise specified, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods. Embodiment

[0031] As Figure 1-4 shown, the present utility model provides a technical solution, a flexible circuit board sorting and conveying device based on multiple cameras, including a support frame 1 and a conveying component, an image acquisition component, a flattening component and a sorting component installed on the support frame 1.

[0032] The above-mentioned conveying component 2 is arranged along the length direction of the support frame 1 and is used to convey the flexible circuit board to be detected from one end to the other end. The conveying component 2 adopts a commonly used linear conveyor belt on the market and can be purchased from the market or customized by the manufacturer. Its specific structure will not be described in detail here. The conveying component 2 is detachably fixed to the support frame 1 by bolts.

[0033] The above-mentioned image acquisition component is composed of a camera support 3, a camera slide rail 4, and a camera body 5. The camera slide rail 4 is installed on the upper part of the camera support 3 and is uniformly arranged along the conveying direction of the flexible circuit board. A camera body 5 is slidably installed on each camera slide rail 4 along its length direction, and multiple camera bodies 5 are arranged in a trapezoid; in order to meet the high recognition accuracy requirements for micro-defects of the flexible circuit board, in this application, an industrial camera equipped with a high magnification lens is used to take high-definition pictures of the flexible circuit board sample to obtain a high-resolution image set. In addition, considering that a single camera cannot cover the entire area of the flexible circuit board due to the limitation of the lens magnification effect, this application uses multi-camera shooting. The captured image set is transmitted to the background and the images are recognized, spliced, and analyzed; the same flexible circuit board is photographed in different regions by multiple camera bodies, and then the images of each region are seamlessly spliced through image processing technology to obtain a complete image of the entire flexible circuit board. The above-mentioned image processing technology is the prior art and will not be elaborated here; in addition, since the combined volume of the camera body and the lens is relatively large, while the actual captured image range is relatively small, therefore, in this application, the cameras are arranged in a trapezoid to ensure that there is enough overlapping area between the images captured by adjacent camera bodies, which is convenient for subsequent image splicing work. The horizontal spacing of the cameras can be adjusted according to the focal length of the cameras and other relevant parameters to ensure that the images captured by different cameras can be effectively superimposed to form a continuous image sequence. For flexible circuit board samples of different sizes, the corresponding number and position of cameras can be flexibly selected and enabled to adapt to different detection requirements.

[0034] There are multiple above-mentioned flattening components, which correspond to the camera body 5 one by one. The flattening component can flatten the flexible circuit board located below it. When the conveying component conveys the flexible circuit board to the lower part of the flattening component, it stops working. At this time, the flattening component works to flatten the flexible circuit board, and at the same time, the corresponding camera body 5 is enabled to collect images. The camera body 5 can continuously take multiple pictures when the flattening component presses down, for the background to refer to and analyze to improve the detection accuracy and accuracy. When the image acquisition is completed, the flattening component moves up. At this time, the conveying component works to convey the flexible circuit board to the next detection area, and the above steps are repeated.

[0035] The above sorting component consists of a blower 6, a connecting pipe 7, and a blowing box 8. The blower 6 is installed on the upper surface of the support frame 1 by bolts. The air outlet of the blower 6 is connected to the blowing box 8 through the connecting pipe 7. The blowing box 8 is installed on one side of the rear end of the conveying component 2 by bolts. The side of the blowing box 8 facing the flexible circuit board is provided with a blowing port. After the flexible circuit board is detected by a high-precision camera, any tiny defects on the flexible circuit board can be accurately identified through these cameras. Then the controller can determine whether it meets the predetermined quality standard. For those flexible circuit boards that meet the quality requirements, they will be allowed to continue moving forward along the conveying component and enter the next production process. For those flexible circuit boards that do not meet the quality standard, the controller will start the blower 6. The blower 6 will generate an air flow and blow it out from the air outlet of the blowing box 8, blowing the unqualified flexible circuit board off the production line. There is a notch on the conveying component for the flexible circuit board to be blown off. Through automated detection and sorting, the need for manual inspection and possible errors are significantly reduced, while the quality and efficiency of the entire production process are improved. The above controller can adopt an industrial control computer, which can be electrically connected to the conveying component, the camera body, the flattening component, and the blower 6 for controlling their operations. Its specific structure and circuit are not within the protection scope of this application, and those skilled in the art can obtain them through common general knowledge, conventional means, or simple derivation in this field, so it will not be elaborated here. Embodiment

[0036] As Figure 1 、 2 、shown in Figure 5, the present utility model provides another technical solution, a flexible circuit board sorting and conveying device based on multiple cameras. The difference from Embodiment 1 is that the camera support 3 is a U-shaped frame body with an opening facing downwards, and the four corners of its bottom are respectively located on both sides of the conveying component 2 and are detachably and fixedly installed on the support frame 1 by bolts.

[0037] Specifically, both ends of the camera slide rail 4 are welded or bolted between the upper inner walls on both sides of the camera support 3.

[0038] Specifically, slide bars 9 are integrally and symmetrically arranged on both sides of the camera slide rail 4. The upper end of the camera body 5 is detachably and fixedly installed with a sliding block 10 by bolts. The sliding block 10 is a U-shaped structure with an opening facing upwards, and sliding grooves 11 that cooperate with the slide bars 9 are symmetrically formed on both inner walls of the sliding block 10. The sliding block 10 can move along the length direction of the camera slide rail 4 through the cooperation of the sliding grooves 11 and the slide bars 9. And a clamping bolt 12 is threadedly connected to one side of the sliding block 10. The inner end of the clamping bolt 12 can pass through the sliding block 10 and contact the outer wall of the slide bar 9. The position adjustment and locking of the sliding block 10 and the camera body 5 are realized by tightening and loosening the clamping bolt 12.

[0039] The above camera body 5 is arranged in a trapezoid. However, due to different detection accuracy requirements and size differences of the flexible circuit boards to be detected, there are differences in parameters such as the focal length selected for the camera body 5. Therefore, the distance between the trapezoidally arranged camera bodies 5 needs to be adjusted according to the size of the camera field of view. A camera slide rail 4 is designed on the camera support 3 to achieve the adjustment of the distance between the camera bodies 5 according to different sizes of the camera field of view, ensuring that the images captured by multiple camera bodies 5 can be stitched into a complete image containing all the information of the flexible circuit board to be detected. Embodiment

[0040] As Figure 1 , 2 , as shown in 6, the present utility model provides another technical solution, a flexible circuit board sorting and conveying device based on multiple cameras. Different from Embodiment 1, the above flattening assembly includes two groups of support plates 13 respectively located on both sides of the conveying assembly 2. Each group of support plates 13 has two. The support plates 13 are all U-shaped plates. The two side plates of the U-shaped plate are respectively located at the upper and lower ends, and the U-shaped openings of the two groups of support plates 13 are arranged oppositely. A driving member 14 is fixedly installed on the upper surface of one of the support plates 13 by bolts. The driving member 14 is a driving motor. A pressing plate body 15 is arranged between the two groups of support plates 13. The driving member 14 can drive the pressing plate body 15 to move up and down.

[0041] Specifically, the output shaft of the driving member 14 passes through the upper part of the support plate 13 and is fixedly connected to a threaded rod 16. The lower end of the threaded rod 16 is rotatably connected to the lower part of the corresponding support plate 13 through a bearing. Guide rods 17 are vertically installed on the inner sides of the other three support plates 13. Fixing plates 18 are fixedly installed at the four corners of the pressing plate body 15 by bolts. Three of the fixing plates 18 are slidably connected to the corresponding guide rods 17, and the other fixing plate 18 is threadedly connected to the corresponding threaded rod 16. By rotating the driving member 14 forward and backward, the threaded rod 16 rotates forward and backward, thereby realizing the up and down movement of the pressing plate body 15. The guide rods 17 play a good guiding role to ensure the stability of the pressing plate body 15 when moving up and down.

[0042] Specifically, the pressing plate body 15 is made of single-sided frosted glass. During the actual installation process, the frosted surface of the single-sided frosted glass faces downward.

[0043] By placing the flexible circuit board under the single-sided frosted glass, the flexible circuit board can be effectively flattened, thereby reducing or eliminating the reflection problem caused by the warping of the board surface. The special surface treatment of the single-sided frosted glass can scatter the reflected light. The single-sided frosted glass facing down can reduce the possibility of light directly reflecting back to the camera body 5 due to the uneven surface of the flexible circuit board, thereby improving the clarity of the image and the recognition accuracy of the controller. The use of the single-sided frosted glass can not only improve the detection effect, but also protect the surface of the flexible circuit board from dust and scratches, further enhancing the stability and reliability of the detection process. Through this design, it can be ensured that the flexible circuit board always remains flat during the detection process, providing a solid foundation for high-quality visual inspection.

[0044] The flexible circuit board sorting and conveying device based on multiple cameras provided by the present utility model, through the arranged conveying component, undertakes the work of conveying the flexible circuit board and can ensure that the flexible circuit board smoothly passes through the detection area under the image acquisition component; through the arranged camera bracket and camera slide rail, the camera bracket can provide a stable installation platform for the camera body, ensuring the stability and reliability of the camera body during imaging. The camera slide rail can enable the camera body to move along a certain track to adapt to the detection requirements of flexible circuit boards of different sizes, ensuring that the images captured by the camera body can be seamlessly stitched to form a complete image of the flexible circuit board; through the arranged flattening component, it can uniformly apply pressure when the flexible circuit board passes through the corresponding detection area, thereby maintaining its flatness and avoiding detection errors caused by warping. In addition, the pressing plate body adopts single-sided frosted glass, which helps to reduce light reflection and improve the imaging quality of the camera body; through the arranged sorting component, it can blow off the unqualified flexible circuit boards from the conveying component. Through automated detection and sorting, the need for manual inspection and possible errors are significantly reduced, while the quality and efficiency of the entire production process are improved.

[0045] It should be understood that this embodiment is only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A flexible circuit board sorting and conveying device based on multiple cameras, comprising a support frame (1), characterized in that: The support frame (1) is equipped with: A conveying component (2), the conveying component (2) being arranged along the length direction of the support frame (1) and being used to convey the flexible circuit board to be inspected from one end to the other end; An image acquisition component, the image acquisition component comprising a camera support (3), a camera slide rail (4) and a camera body (5), wherein the camera slide rail (4) is mounted on the upper portion of the camera support (3) and a plurality of the camera slide rails (4) are evenly arranged along the conveying direction of the flexible circuit board, a camera body (5) is slidably mounted on each of the camera slide rails (4), and the camera bodies (5) are arranged in a trapezoidal shape; A flattening assembly, wherein a plurality of the flattening assemblies are provided and correspond one to one with the camera bodies (5), and the flattening assemblies are capable of flattening the flexible circuit board located therebelow; A sorting component, the sorting component comprising a blower (6), a connecting pipe (7) and a blow box (8), the blower (6) being mounted on the upper surface of the support frame (1), the air outlet of the blower (6) being connected to the blow box (8) via the connecting pipe (7), and the blow box (8) being mounted on one side of the rear end of the conveying component (2).

2. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 1 is characterized in that: The camera bracket (3) is a U-shaped frame with an opening facing downwards, and the four corners of the bottom are respectively located on both sides of the transmission component (2) and are detachably fixedly mounted on the support frame (1).

3. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 2 is characterized in that: The two ends of the camera slide rail (4) are respectively fixedly mounted between the inner walls on both sides of the upper part of the camera bracket (3).

4. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 3 is characterized in that: Slide bars (9) are symmetrically arranged on both sides of the camera slide rail (4); a slide block (10) is fixedly connected to the upper end of the camera body (5); the slide block (10) is a U-shaped structure with an opening facing upward, and slide grooves (11) for use with the slide bars (9) are symmetrically arranged on the inner walls on both sides; the slide block (10) can move along the length direction of the camera slide rail (4) through the cooperation of the slide grooves (11) and the slide bar (9).

5. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 4 is characterized in that: A clamping bolt (12) is threadedly connected to one side of the sliding block (10), and an inner end of the clamping bolt (12) can pass through the sliding block (10) and contact the outer wall of the sliding bar (9).

6. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 1 is characterized in that: The flattening assembly comprises two groups of support plates (13) respectively located on both sides of the transmission assembly (2), each group of support plates (13) being provided with two support plates, the support plates (13) all being U-shaped plates, and the U-shaped openings of the two groups of support plates (13) being arranged opposite to each other, a driving member (14) being provided on the upper surface of one of the support plates (13), and a pressing plate body (15) being provided between the two groups of support plates (13), and the driving member (14) being capable of driving the pressing plate body (15) to move up and down.

7. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 6 is characterized in that: The output shaft of the driving member (14) passes through the upper part of the support plate (13) and is fixedly connected to a threaded rod (16), and the lower end of the threaded rod (16) is rotatably connected to the lower part of the corresponding support plate (13).

8. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 7 is characterized in that: Guide rods (17) are vertically mounted on the inner sides of the other three support plates (13).

9. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 8 is characterized in that: A fixing plate (18) is provided at each of the four corners of the pressure plate body (15), wherein three of the fixing plates (18) are slidably connected to corresponding guide rods (17), and another fixing plate (18) is threadedly connected to a corresponding threaded rod (16).

10. The flexible circuit board sorting and conveying device based on multiple cameras according to claim 9 is characterized in that: The pressing plate body (15) is made of single-sided frosted glass.

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