CN219625391U - Detection device for flexible circuit board with welding holes - Google Patents
Detection device for flexible circuit board with welding holes Download PDFInfo
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- CN219625391U CN219625391U CN202223224866.XU CN202223224866U CN219625391U CN 219625391 U CN219625391 U CN 219625391U CN 202223224866 U CN202223224866 U CN 202223224866U CN 219625391 U CN219625391 U CN 219625391U
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- circuit board
- flexible circuit
- angle annular
- supporting platform
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Abstract
The utility model discloses a detection device of a flexible circuit board with a welding hole, which relates to the technical field of automatic optical detection and comprises a bracket, a detection assembly and a supporting platform; the surface of the bracket is provided with a driving assembly which is used for controlling the sliding plates distributed on the outer side of the bracket to move up and down; the detection assembly is arranged on the surface of the sliding plate and comprises an image acquisition mechanism and a light source mechanism which are distributed up and down, the image acquisition mechanism comprises a camera and a lens which is arranged, the light source mechanism comprises a high-angle annular aperture and a low-angle annular aperture which are positioned above the supporting platform, and a parallel backlight light source which is positioned below the supporting platform; the technical key points are as follows: through setting up two work stations, make its mutual cooperation, can carry out accurate discernment and screening to the flexible circuit board damage, dirty, stifled hole, weld hole and leak nickel, weld hole damage, compliance board dew copper, pit etc. multiple defect item, improved the accuracy to taking welding hole flexible circuit board detection greatly.
Description
Technical Field
The utility model relates to the technical field of automatic optical detection, in particular to a detection device for a flexible circuit board with a welding hole.
Background
The flexible printed circuit board is made of polyimide or polyester film as a base material and has high reliability and excellent flexibility; the flexible printed circuit board or the FPC for short has the characteristics of high wiring density, light weight and thin thickness; according to the characteristics of the material of the flexible circuit board and the field of wide application, the three-dimensional characteristics and the thin thickness are better applied to digital products, mobile phones and notebook computers in order to effectively save the volume and achieve a certain accuracy; the instrument used for detecting the flexible circuit board is an optical image measuring instrument.
Because the flexible circuit board has the characteristics of free bending and convenient integration of component assembly and wire connection, the demand of the flexible circuit board in industrial production is greatly increased in recent years, and the traditional distinction of defective products of the flexible circuit board with the welding holes mainly depends on manual visual observation, but the scheme has the defects of higher labor cost, inconvenient personnel management, low efficiency and the like; in addition, the visual inspection scheme of appearance defects is widely applied to the industrial field due to high speed and high detection rate, but the appearance defects of products have microminiaturization, uncertainty and diversity, and is a main technical barrier which always puzzles the application of the visual appearance inspection scheme to the detection of the appearance defects.
Disclosure of Invention
The technical problems to be solved are as follows:
aiming at the defects of the prior art, the utility model provides a detection device for a flexible circuit board with a welding hole, which mainly depends on different structures in a light source mechanism and is combined with an image acquisition mechanism, so that the accurate and rapid detection of various defect items such as flexible board damage, dirt, hole blocking, nickel leakage of the welding hole, damage of the welding hole, copper exposure of the flexible board, pits and the like is realized.
The technical scheme is as follows:
in order to achieve the above purpose, the utility model is realized by the following technical scheme:
a detection device of a flexible circuit board with a welding hole comprises a bracket, a detection assembly and a support platform;
the surface of the bracket is provided with a driving assembly which is used for controlling the sliding plates distributed on the outer side of the bracket to move up and down;
the detection assembly is arranged on the surface of the sliding plate and comprises an image acquisition mechanism and a light source mechanism which are distributed up and down, the image acquisition mechanism comprises a camera and a lens which is arranged, the light source mechanism comprises a high-angle annular aperture and a low-angle annular aperture which are positioned above a supporting platform, and a parallel backlight light source which is positioned below the supporting platform;
the supporting platform is located under the detection assembly, and the product to be detected is placed on the supporting platform.
In one possible implementation manner, the driving assembly comprises a sliding rail and a driving motor arranged at the bottom end of the sliding rail, the sliding plate is assembled on the sliding rail in a sliding manner, and an output shaft matched with the driving motor is connected with the sliding plate.
In one possible implementation manner, the camera in the image acquisition mechanism is connected with the sliding plate through a connecting block, and the lens comprises any one of a fixed-focus lens and a telecentric lens.
In one possible implementation manner, the center of the lens, the center of the high-angle annular aperture and the center of the low-angle annular aperture are all on the same straight line, and the lens penetrates through the high-angle annular aperture.
In one possible implementation, the irradiation direction of the lamp beads arranged on the inner wall of the high-angle annular aperture and the product to be detected are 75 degrees or 80 degrees in the horizontal direction.
In one possible implementation manner, the irradiation direction of the lamp beads arranged on the inner wall of the low-angle annular aperture and the product to be detected are 45 degrees in the horizontal direction.
In one possible implementation, the parallel backlight light sources are distributed in parallel with the support platform.
In one possible implementation manner, the supporting platform comprises a workpiece structure for supporting each optical device and a transparent glass carrying platform for supporting the product to be detected on a horizontal plane, and the surface of the transparent glass carrying platform is provided with a groove for placing the product to be detected.
The beneficial effects are that:
in the scheme, by arranging two work stations to match with each other, various defect items such as damage, dirt, hole blocking, hole welding, nickel leakage, hole welding damage, copper exposure of the flexible board, pits and the like of the flexible circuit board can be accurately identified and screened, and the accuracy of detecting the flexible circuit board with the hole welding is greatly improved;
the high-resolution full-area array camera selected by the device can ensure the generation rate and the image quality of images under high-speed photographing, and also realizes non-contact detection, so that the flexible circuit board can be prevented from being damaged secondarily in the detection process, the detection accuracy and efficiency are greatly improved, and the device is very suitable for the field of appearance detection of flexible plates with welded holes, which is high in production requirement and needs to be used automatically.
Drawings
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of embodiment 1 of the present utility model;
fig. 3 is a schematic structural diagram of embodiment 2 of the present utility model.
Legend description: 1. a bracket; 2. a driving motor; 3. a slide rail; 4. a slide plate; 5. an image acquisition mechanism; 6. a high angle annular aperture; 7. a low angle annular aperture; 8. a support platform; 9. parallel backlight light sources.
Detailed Description
The embodiment of the utility model provides the detection device for the flexible circuit board with the welding holes, which mainly combines the image acquisition mechanism by means of different structures in the light source mechanism, thereby realizing the accurate and rapid detection of various defect items such as the damage, dirt, hole blocking, nickel leakage, hole damage, copper exposure, pits and the like of the flexible board.
The technical scheme in the embodiment of the utility model aims to solve the problems of the background technology, and the general thought is as follows:
example 1:
this embodiment describes a specific structure of a first station in a device for inspecting a flexible circuit board with solder holes, as shown in fig. 2, the station includes: the device comprises a bracket 1, a detection assembly and a supporting platform;
the surface of the bracket 1 is provided with a driving component which is used for controlling the sliding plates 4 distributed on the outer side of the bracket 1 to move up and down;
the detection assembly is arranged on the surface of the sliding plate 4 and comprises an image acquisition mechanism 5 and a light source mechanism which are distributed up and down, wherein the image acquisition mechanism 5 comprises a camera and a lens which is arranged, the light source mechanism comprises a high-angle annular aperture 6 and a low-angle annular aperture 7 which are positioned above a supporting platform 8, and the light source mechanism in the embodiment is used for detecting appearance flaws on the surface of the flexible circuit board to be detected;
specifically, the camera is 2400w global exposure area array camera, the lens is an industrial lens with a focal length of 50mm, and the configuration can have the characteristics of showing product details with high resolution and ensuring no delay and smear under high-speed photographing;
the working distance and the mounting angle of the image acquisition mechanism and the light source mechanism are matched with the flexible circuit board to be inspected.
The supporting platform 8 is located under the detecting assembly, and the product to be detected is placed on the supporting platform 8.
In some examples, the driving assembly comprises a sliding rail 3 and a driving motor 2 arranged at the bottom end of the sliding rail 3, a sliding plate 4 is slidably assembled on the sliding rail 3, and an output shaft matched with the driving motor 2 is connected with the sliding plate 4.
In some examples, the camera in the image acquisition mechanism 5 is connected with the sliding plate 4 through a connecting block, and the lens adopts an industrial fixed-focus lens; the center of the lens, the center of the high angle annular diaphragm 6 and the center of the low angle annular diaphragm 7 mentioned above are all on the same straight line, and the lens penetrates the high angle annular diaphragm 6.
In some examples, the illumination direction of the lamp beads arranged on the inner wall of the high-angle annular aperture 6 and the product to be detected are 75 degrees in the horizontal direction; the illumination direction of the lamp beads arranged on the inner wall of the low-angle annular aperture 7 and the product to be detected are 45 degrees in the horizontal direction.
Specifically, all the bead directions and the horizontal direction of a product to be detected (namely a flexible circuit board) are 75 degrees in the high-angle annular diaphragm 6, so that the light of the high-angle annular diaphragm 6 can uniformly act on the whole surface of the product, and under the action of uniform light, if the soft board part of the product has defects such as dirt, damage and copper exposure, a clear contrast is formed between the product and a good surrounding area, so that the dirt, soft board damage and copper exposure detection on the soft board part of the product is realized;
the design that all the lamp beads are in 45 degrees with the horizontal direction of the product is adopted in the low-angle annular aperture 7, so that the whole product surface can be irradiated by light rays from the upper side direction, and due to the fact that irregular pits are downwards generated at the smooth positions of the soft plates in the poor display mode of pits of the product, the light rays can reflect more light back from the edges of the pits of the soft plates in the pits, and clear contrast is formed in surrounding normal areas, so that the pits of the soft plates of the product are detected.
In some examples, the support platform 8 includes a work piece structure supporting the respective optical devices and a transparent glass carrier supporting the product to be inspected on a horizontal plane, and the transparent glass carrier has a recess formed on a surface thereof for placing the product to be inspected.
Example 2:
unlike embodiment 1, this embodiment describes a specific structure of a second station in the inspection apparatus for a flexible circuit board with solder holes, as shown in fig. 3, the station includes: a bracket 1, a detection assembly and a support platform 8;
the surface of the bracket 1 is provided with a driving component which is used for controlling the sliding plates 4 distributed on the outer side of the bracket 1 to move up and down;
the detection component is arranged on the surface of the sliding plate 4 and comprises an image acquisition mechanism 5 and a light source mechanism which are distributed up and down; the image acquisition mechanism 5 comprises a camera and an allocated lens, the light source mechanism comprises a high-angle annular aperture 6 positioned above the supporting platform 8 and a parallel backlight light source 9 positioned below the supporting platform 8, and the arrangement can eliminate measurement errors caused by small difference of object space distances of products, improve image precision and ensure no delay and smear under high-speed photographing; in this embodiment, the light source mechanism is used for detecting appearance flaws of the soldering holes of the flexible board to be detected.
Specifically, the camera adopts a 2400w global exposure area array camera, and the lens adopts an industrial telecentric lens; the working distance and the installation angle of the image acquisition mechanism are matched with the flexible circuit board to be inspected.
The supporting platform 8 is located under the detecting assembly, and the product to be detected is placed on the supporting platform 8.
In some examples, the driving assembly comprises a sliding rail 3 and a driving motor 2 arranged at the bottom end of the sliding rail 3, a sliding plate 4 is slidably assembled on the sliding rail 3, and an output shaft matched with the driving motor 2 is connected with the sliding plate 4.
In some examples, the camera in the image acquisition mechanism 5 is connected with the sliding plate 4 through a connecting block, and the lens adopts an industrial telecentric lens.
In some examples, the center of the lens, the center of the high angle annular aperture 6 are all on the same line, and the lens extends through the high angle annular aperture 6.
In some examples, the direction of illumination of the beads provided on the inner wall of the high angle annular aperture 6 is 80 ° to the horizontal direction of the product to be inspected.
Specifically, the high-angle annular aperture 6 of the second workstation adopts the design that all the lamp bead directions and the horizontal direction of the product are 80 degrees, so that light rays of the high-angle annular aperture can illuminate a welding hole area of the product in a nearly parallel mode, under the action of the nearly parallel light rays, the welding hole surface is flat, if the welding hole area is damaged and nickel leakage is bad, diffuse reflection can occur when the parallel light source acts on the welding hole area, the welding hole area is darkened, and therefore detection of the damage and nickel leakage defect items of the welding hole of the product is realized.
In some examples, the parallel backlight sources 9 are distributed parallel to the support platform 8;
specifically, the parallel backlight source 9 below adopts a design mode of parallel emission of surface light, and is combined with the high-angle annular aperture 6 above to be lightened simultaneously, firstly, the parallel surface light below passes through the welding hole, if the welding hole is blocked, the light of the parallel backlight source 9 can be blocked to form a black area, so that the detection of the hole blocking defect item of a product is realized.
In some examples, the support platform 8 comprises a work piece structure supporting the respective optical device and a transparent glass carrier supporting the product to be inspected on a horizontal plane, the transparent glass carrier surface being grooved for the product to be inspected.
Specifically, the supporting platform 8 can provide good levelness and photographing positions for the product to be tested, and is made of transparent glass, so that the transparent glass can be matched with a lighting mode that the parallel backlight light source 9 below the second workstation passes through the platform from bottom to top, and more sufficient image information can be obtained.
It can be derived from the combination of the above-described embodiment 1 and embodiment 2:
by arranging two work stations to match with each other, the flexible circuit board can be accurately identified and screened for various defect items such as damage, dirt, hole blocking, nickel leakage of a welding hole, damage of the welding hole, copper exposure of a flexible board, pits and the like, and the accuracy of detecting the flexible circuit board with the welding hole is greatly improved;
the high-resolution full-area array camera selected by the device can ensure the generation rate and the image quality of images under high-speed photographing, and also realizes non-contact detection, so that the flexible circuit board can be prevented from being damaged secondarily in the detection process, the detection accuracy and efficiency are greatly improved, and the device is very suitable for the field of appearance detection of flexible plates with welded holes, which is high in production requirement and needs to be used automatically.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (8)
1. The utility model provides a take detection device of welding hole flexible circuit board which characterized in that includes:
the surface of the bracket (1) is provided with a driving assembly which is used for controlling the sliding plates (4) distributed on the outer side of the bracket (1) to move up and down;
the detection assembly is arranged on the surface of the sliding plate (4) and comprises an image acquisition mechanism (5) and a light source mechanism which are distributed up and down; and
the supporting platform (8) is positioned right below the detection assembly, and a product to be detected is placed on the supporting platform (8);
the image acquisition mechanism (5) comprises a camera and a lens which is arranged, the light source mechanism comprises a high-angle annular aperture (6) and a low-angle annular aperture (7) which are positioned above the supporting platform (8), and a parallel backlight light source (9) which is positioned below the supporting platform (8).
2. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the driving assembly comprises a sliding rail (3) and a driving motor (2) arranged at the bottom end of the sliding rail (3), the sliding plate (4) is assembled on the sliding rail (3) in a sliding mode, and an output shaft matched with the driving motor (2) is connected with the sliding plate (4).
3. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the camera in the image acquisition mechanism (5) is connected with the sliding plate (4) through a connecting block, and the lens comprises any one of a fixed-focus lens and a telecentric lens.
4. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the center of the lens, the center of the high-angle annular diaphragm (6) and the center of the low-angle annular diaphragm (7) are all on the same straight line, and the lens penetrates through the high-angle annular diaphragm (6).
5. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the irradiation direction of the lamp beads arranged on the inner wall of the high-angle annular aperture (6) and the product to be detected are 75 degrees or 80 degrees in the horizontal direction.
6. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the illumination direction of the lamp beads arranged on the inner wall of the low-angle annular aperture (7) and the product to be detected are 45 degrees in the horizontal direction.
7. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the parallel backlight light sources (9) and the supporting platform (8) are distributed in parallel.
8. The apparatus for inspecting a flexible circuit board with solder holes of claim 1, wherein: the supporting platform (8) comprises a workpiece structure for supporting each optical device and a transparent glass carrying platform for supporting products to be detected on a horizontal plane, and the surface of the transparent glass carrying platform is provided with a groove for placing the products to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223224866.XU CN219625391U (en) | 2022-12-02 | 2022-12-02 | Detection device for flexible circuit board with welding holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223224866.XU CN219625391U (en) | 2022-12-02 | 2022-12-02 | Detection device for flexible circuit board with welding holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219625391U true CN219625391U (en) | 2023-09-01 |
Family
ID=87793604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223224866.XU Active CN219625391U (en) | 2022-12-02 | 2022-12-02 | Detection device for flexible circuit board with welding holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219625391U (en) |
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2022
- 2022-12-02 CN CN202223224866.XU patent/CN219625391U/en active Active
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