Visual inspection equipment for mobile phone backboard

Abstract

The utility model discloses visual detection equipment for a mobile phone backboard, and mainly relates to the field of mobile phone detection equipment. Comprising a camera adjusting module, a light source adjusting module and a conveying module, the camera adjusting module and the light source adjusting module are respectively connected with a multi-degree-of-freedom adjusting mechanism, and the camera adjusting module, the light source adjusting module and the conveying module are all matched with a main body frame; the camera adjusting module comprises a front shooting camera and a side shooting camera, and the front shooting camera and the side shooting camera are connected with the main body frame through a multi-degree-of-freedom adjusting mechanism. The utility model has the beneficial effects that different defect problems on different backboards of different mobile phone models can be conveniently identified, so that the mobile phone backboards do not need to be manually detected, and the best detection effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone inspection equipment, specifically a mobile phone back panel visual inspection device. Background Technology

[0002] Currently, the replacement cycle for mobile phones is gradually shortening. As an essential component of mobile phones, defect detection of the phone back panel is primarily done manually. With social and technological development, labor costs are gradually increasing, and relying solely on manual inspection is far from meeting the requirements of production volume and quality. Therefore, it is necessary to identify defects on the phone back panel. However, mobile phone back panel inspection technology mainly suffers from problems such as the diversity of defects, the significant impact of environmental factors on results, and the ease of misjudgment. Furthermore, during the inspection of the phone back panel, various types of defects may occur, and it is difficult to identify multiple types of defects using a single identification method, thus complicating the defect identification process. Moreover, the sizes of defects vary between different phone models, making the identification of different defects for different phone models a crucial issue that needs to be addressed.

[0003] Therefore, based on the above problems, a visual inspection device for mobile phone back panels is designed to easily identify different defects on different back panels of different mobile phone models, thereby ensuring that mobile phone back panels do not require manual inspection and achieve the best inspection results. Utility Model Content

[0004] The purpose of this invention is to provide a device for visual inspection of mobile phone back panels, which can easily identify different defects on different back panels of different mobile phone models, thereby ensuring that mobile phone back panels do not require manual inspection and achieve the best inspection results.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A mobile phone back panel visual inspection device includes a camera adjustment module, a light source adjustment module, and a conveying module. The camera adjustment module and the light source adjustment module are respectively connected to a multi-degree-of-freedom adjustment mechanism, and the camera adjustment module, the light source adjustment module, and the conveying module all cooperate with a main frame. The camera adjustment module includes a front-facing camera and a side-facing camera, both of which are connected to the main frame through the multi-degree-of-freedom adjustment mechanism. The light source adjustment module includes a front light source and a side-facing light source, both of which are connected to an adjustment device to adjust the illumination position of the front-facing light source and the side-facing light source.

[0007] The multi-degree-of-freedom adjustment mechanism includes a camera mounting plate and a camera connecting plate. The camera mounting plate is used to fix the front-facing camera or the side-facing camera. An arc-shaped sliding groove is designed on the camera connecting plate to correspond to the limiting hole of the camera mounting base plate. The pitch angle of the camera connecting plate can be adjusted by loosening and tightening the connecting screws. The camera mounting plate is slidably provided with a profile track, and the camera mounting plate is adjusted by sliding on the profile track.

[0008] The forward light source is fixedly connected to the light source fixing plate. The light source fixing plate is designed with arc grooves and hinge holes at both ends. The hinge hole at the front end of the light source fixing plate is hinged to the light source profile track through a spring plate connector. The pitch angle of the light source fixing plate is adjusted by tightening and loosening the spring plate connector.

[0009] The side-shooting light source is fixedly connected to the light source connecting plate, and the light source connecting plate is fixedly connected to the light source connecting short axis. An auxiliary side-shooting light source is provided in conjunction with the side-shooting light source, including an auxiliary left side-shooting light source and an auxiliary right side-shooting light source. The two ends of the auxiliary left side-shooting light source are hinged to a first left light source fixing component and a second left light source fixing component, respectively. The first and second left light source fixing components have arc-shaped grooves at both ends, allowing adjustment of the illumination angle of the auxiliary left side-shooting light source by tightening or loosening screws. The two ends of the auxiliary right side-shooting light source are hinged to a first right light source fixing component and a second right light source fixing component, respectively. The first and second right light source fixing components also have arc-shaped grooves at both ends, allowing adjustment of the illumination angle of the auxiliary right side-shooting light source by tightening or loosening screws.

[0010] The conveying module includes a conveyor belt surface and a conveying mechanism. The conveyor belt surface is connected to the conveying mechanism, and the conveying mechanism drives the conveyor belt surface to move. The conveyor belt surface is also connected to a size adjustment mechanism, which adjusts the width of the conveyor belt surface.

[0011] The size adjustment mechanism includes sliding bases and forward and reverse drive screws. The upper ends of the two sliding bases are respectively connected to the two side frames of the conveyor belt surface, and the lower ends of the two sliding bases are fitted with base slide rails. The forward and reverse drive screws are installed through the screw holes provided in the center of the sliding bases, and the screw holes in the center of the two sliding bases are in opposite directions to the screws. The positions on both sides of the forward and reverse drive screws are fitted with bearing bases provided on both sides of the main frame.

[0012] The two sets of size adjustment mechanisms are respectively located at the front and rear ends of the conveyor belt surface, and the front and rear ends of the conveyor belt surface are synchronously adjusted by the two sets of size adjustment mechanisms.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] When setting up this device, the camera adjustment module, light source adjustment module, and conveying module are configured to enable the conveying and recognition operation of the mobile phone back panel.

[0015] During the inspection of the mobile phone back panel, the position of the mobile phone back panel is transported by the conveying module, so that the mobile phone back panel is photographed and identified by the camera adjustment module and the light source adjustment module. By photographing and identifying the mobile phone back panel from different angles and with different light sources, the information existing on the mobile phone back panel is judged, thereby identifying different defects on the mobile phone back panel, so as to achieve the purpose of mobile phone back panel identification and inspection. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Appendix Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0018] Appendix Figure 3 This is a schematic diagram of a partial internal structure of this utility model.

[0019] Appendix Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0020] Appendix Figure 5 This is a partial structural schematic diagram of the present invention.

[0021] Appendix Figure 6 This is a schematic diagram of the internal structure of this utility model.

[0022] Appendix Figure 7 This is a partial structural schematic diagram of the present invention.

[0023] The labels shown in the attached diagram:

[0024] 1. Front-facing camera; 2. Side-facing camera; 3. Front-facing light source; 4. Side-facing light source; 5. Camera mounting plate; 6. Camera connecting plate; 7. Arc-shaped slide rail; 8. Light source mounting plate; 9. Light source connecting plate; 10. Auxiliary side-facing left light source; 11. Auxiliary side-facing right light source; 12. Conveyor belt surface; 13. Sliding base; 14. Forward and reverse drive screw; 15. Base slide rail. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0026] A mobile phone back panel visual inspection device includes a camera adjustment module, a light source adjustment module, and a conveying module. The camera adjustment module and the light source adjustment module are respectively connected to a multi-degree-of-freedom adjustment mechanism, and the camera adjustment module, the light source adjustment module, and the conveying module all cooperate with a main frame. The camera adjustment module includes a front-facing camera 1 and a side-facing camera 2, both of which are connected to the main frame through the multi-degree-of-freedom adjustment mechanism. The light source adjustment module includes a front-facing light source 3 and a side-facing light source 4, both of which are connected to an adjustment device to adjust the illumination position of the front-facing light source 3 and the side-facing light source 4.

[0027] The visual inspection targets flatness defects, color difference defects, and gloss defects on the back panel of a mobile phone. Flatness defects include bulges, pits, multiple pits, scratches, fabric tears, and rounded edges; color difference defects include discoloration, white spots, and lightning bolt patterns; gloss defects include wavy patterns and watermarks. Cameras are categorized as line scan cameras and area scan cameras, and light sources are categorized as line scan light sources (parallel light sources), area scan light sources (area light sources), line light sources, ring light sources, and strip light sources. Various camera combinations with different light sources, and under different installation angles and other design conditions, can capture different images. These captured images provide high-quality basic material for subsequent visual inspection algorithms. The recognition methods for the above structures are as follows:

[0028] 1. The line scan camera and light source are used for frontal shooting, with two methods: shooting from above (overhead) and shooting from below (upward). The purpose is to simultaneously acquire image information from both the front and back of the phone's back panel, improving efficiency and reducing steps. The installation angles of both the camera and the light source are adjustable. At suitable angles, most flatness defects can be captured. Side auxiliary light sources can also be added on both sides for supplementary lighting. The advantage of this is that the difference in brightness and darkness of the side light can highlight small differences such as pits and clusters of pits, while avoiding misjudgments of dust during identification.

[0029] 2. Multi-angle shooting using area array cameras and area array light sources can be categorized into: frontal shooting (overhead and low-angle shots), side shooting (front / back and left / right side shots); front lighting (vertical lighting: camera-light source-object under test); back lighting (camera-object under test-light source); side lighting (left / right lighting, front / back lighting, and simultaneous lighting). Various combinations of camera mounting and light source illumination methods can meet diverse image acquisition needs. This device utilizes numerous combinations of frontal shooting (overhead and low-angle shots) and front and side lighting. For example, simultaneous left / right side lighting with the camera shooting from above enables dark-field image acquisition under planar orthographic reflection light, revealing color difference defects and some gloss defects; frontal shooting with the camera and frontal lighting enables bright-field information acquisition under planar orthographic reflection light; and frontal shooting with back lighting allows light to pass through the object under test, and the camera collects the transmitted light, enabling the detection of defects such as thickness and pits. Side-mounted cameras and side lighting can be used to capture images under conditions of diffuse reflection and uniform scattering, resulting in high-quality image material with gloss defects.

[0030] 3. The various structures of the camera and light source mainly include various combinations; the camera and light source mounting angle is adjustable; and it can achieve front shooting, side shooting, and rear shooting. The number of camera and light source groups used depends on the defects of the mobile phone back panel and is not limited to the several shown in this device model.

[0031] The specific structural configuration of the above structure is as follows:

[0032] The multi-degree-of-freedom adjustment mechanism includes a camera mounting plate 5 and a camera connecting plate 6. The camera mounting plate 5 is used to fix the front-facing camera 1 or the side-facing camera 2. An arc-shaped sliding groove 7 is designed on the camera connecting plate 6 to correspond to the limiting hole of the camera mounting base plate. The tilt angle of the camera connecting plate 6 can be adjusted by loosening and tightening the connecting screws. The camera mounting plate 5 is slidably provided with a profile track, and the camera mounting plate 5 can be adjusted by sliding on the profile track.

[0033] The forward light source 3 is fixedly connected to the light source fixing plate 8. The light source fixing plate 8 is designed with arc-shaped sliding grooves 7 and hinge holes at both ends. The hinge hole at the front end of the light source fixing plate 8 is hinged to the light source profile track through a spring plate connector. The pitch angle of the light source fixing plate 8 can be adjusted by tightening and loosening the spring plate connector.

[0034] The side-shooting light source 4 is fixedly connected to the light source connecting plate 9, and the light source connecting plate 9 is fixedly connected to the light source connecting short shaft. An auxiliary side-shooting light source 4 is provided in conjunction with the side-shooting light source 4. The auxiliary side-shooting light source 4 includes an auxiliary left side-shooting light source 10 and an auxiliary right side-shooting light source 11. The two ends of the auxiliary left side-shooting light source 10 are hinged to a first left light source fixing member and a second left light source fixing member, respectively. The first and second left light source fixing members have arc-shaped grooves 7 at both ends, allowing adjustment of the illumination angle of the auxiliary left side-shooting light source 10 by tightening screws. The two ends of the auxiliary right side-shooting light source 11 are hinged to a first right light source fixing member and a second right light source fixing member, respectively. The first and second right light source fixing members have arc-shaped grooves 7 at both ends, allowing adjustment of the illumination angle of the auxiliary right side-shooting light source 11 by tightening screws.

[0035] The specific structural configuration of the conveying module is as follows:

[0036] The conveying module includes a conveyor belt surface 12 and a conveying mechanism. The conveyor belt surface 12 is connected to the conveying mechanism, and the conveying mechanism drives the conveyor belt surface 12 to move. The conveyor belt surface 12 is also connected to a size adjustment mechanism, which adjusts the width of the conveyor belt surface 12.

[0037] The size adjustment mechanism includes sliding bases 13 and forward / reverse drive screws 14. The upper ends of the two sliding bases 13 are respectively connected to the two side frames of the conveyor belt surface 12, and the lower ends of the two sliding bases 13 are fitted with base slide rails 15. The forward / reverse drive screws 14 are installed through a screw hole in the center of the sliding base 13, and the screw holes in the centers of the two sliding bases 13 are in opposite directions to the screw holes in the forward / reverse drive screws 14. The two sides of the forward / reverse drive screws 14 are fitted with bearing bases on both sides of the main frame. During driving, the forward / reverse drive screws 14 rotate, thereby adjusting the position of the sliding bases 13 relative to the base slide rails 15 in two directions, thus achieving adjustment of the width of the conveyor belt surface 12.

[0038] The two sets of size adjustment mechanisms are respectively located at the front and rear ends of the conveyor belt surface 12, and the positions of the front and rear ends of the conveyor belt surface 12 are adjusted synchronously through the two sets of size adjustment mechanisms to achieve synchronicity in the size adjustment of both sides of the conveyor belt surface 12.

[0039] Therefore, the setup of a mobile phone back panel visual inspection device can easily identify different defects on different mobile phone models and back panels, thereby ensuring that the mobile phone back panel does not require manual inspection and achieves the best inspection results.

Claims

1. A mobile phone back plate vision detection device, characterized in that: The application relates to a camera adjusting module, a light source adjusting module and a conveying module, wherein the camera adjusting module and the light source adjusting module are respectively connected with multi-degree-of-freedom adjusting mechanisms, and the camera adjusting module, the light source adjusting module and the conveying module are matched with a main body frame; the camera adjusting module comprises a front camera (1) and a side camera (2), and the front camera (1) and the side camera (2) are connected with the main body frame through the multi-degree-of-freedom adjusting mechanisms; The light source adjusting module comprises a front light source (3) and a side light source (4), and the front light source (3) and the side light source (4) are connected with adjusting devices; the irradiation positions of the front light source (3) and the side light source (4) are adjusted through the light source adjusting module.

2. The mobile phone back plate visual inspection equipment according to claim 1, characterized in that: The multi-degree-of-freedom adjusting mechanism comprises a camera fixing plate (5) and a camera connecting plate (6), the camera fixing plate (5) is used for fixing the front camera (1) or the side camera (2), an arc sliding groove (7) is designed on the camera connecting plate (6) and corresponds to a limiting hole of the camera fixing plate, and a loose connecting screw can be used for adjusting the pitch angle of the camera connecting plate (6). The camera fixing plate (5) is slidably arranged on a profile track, and the camera fixing plate (5) is adjusted on the profile track through sliding.

3. The mobile phone back plate visual inspection apparatus according to claim 2, characterized in that: The front light source (3) is fixedly connected on a light source fixing plate (8), arc sliding grooves (7) and hinge holes are designed at two ends of the light source fixing plate (8), the hinge hole at the front end of the light source fixing plate (8) is hingedly connected with a light source profile track through an elastic sheet connecting piece, and a loose elastic sheet connecting piece is used for adjusting the pitch angle of the light source fixing plate (8).

4. The mobile phone back plate visual inspection apparatus according to claim 3, characterized in that: The side light source (4) is fixedly connected with a light source connecting plate (9), and the light source connecting plate (9) is fixedly connected with a light source connecting short shaft. An auxiliary side light source (4) is arranged in cooperation with the side light source (4), and the auxiliary side light source (4) comprises an auxiliary side left light source (10) and an auxiliary side right light source (11); the two ends of the auxiliary side left light source (10) are respectively hingedly connected with a first left light source fixing piece and a second left light source fixing piece, arc sliding grooves (7) are designed at the two ends of the first left light source fixing piece and the second left light source fixing piece, and a loose screw is used for adjusting the irradiation angle of the auxiliary side left light source (10); the two ends of the auxiliary side right light source (11) are respectively hingedly connected with a first right light source fixing piece and a second right light source fixing piece, arc sliding grooves (7) are designed at the two ends of the first right light source fixing piece and the second right light source fixing piece, and a loose screw is used for adjusting the irradiation angle of the auxiliary side right light source (11).

5. The visual inspection apparatus for mobile phone back plate according to claim 1 or 4, characterized in that: The conveying module comprises a conveying belt surface (12) and a conveying mechanism, the conveying belt surface (12) is connected with the conveying mechanism in a matched mode, and the conveying belt surface (12) is moved by the conveying mechanism; The conveying belt surface (12) is connected with a size adjusting mechanism in a matched mode, and the width size of the conveying belt surface (12) is adjusted through the size adjusting mechanism.

6. The mobile phone back plate visual inspection apparatus according to claim 5, characterized in that: The size adjusting mechanism comprises sliding bases (13) and positive and negative transmission screw rods (14), the upper ends of the two sliding bases (13) are connected with the two side frames of the conveying belt surface (12) respectively, and the lower ends of the two sliding bases (13) are matched with base sliding rails (15). The positive and negative transmission screw rods (14) are arranged through the screw holes arranged in the centers of the sliding bases (13), and the screwing directions of the screw holes in the centers of the two sliding bases (13) are opposite to that of the positive and negative transmission screw rods (14); the positions of the two sides of the positive and negative transmission screw rods (14) are matched with the bearing bases arranged on the two sides of the main body frame.

7. The apparatus for visual inspection of a cell phone back plate of claim 6, wherein: Two groups of the size adjusting mechanisms are arranged at the front and rear positions of the conveying belt surface (12) respectively, and the front and rear positions of the conveying belt surface (12) are synchronously adjusted through the two groups of the size adjusting mechanisms.

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