A visual detection device for the back baseband of a mobile phone panel after gluing

Abstract

The utility model relates to mobile phone manufacturing technical field discloses a kind of visual inspection devices for mobile phone panel back baseband after gluing, including base, X axis module, X linear guide, Y axis module, camera mounting support, code scanning camera and detection camera, the X axis module and X linear guide are set on base, the Y axis module is set on X axis module, the Y axis module and X linear guide sliding fit, load platform is equipped on the Y axis module, code scanning camera and detection camera are equipped on the camera mounting support, the lower of code scanning camera is equipped with strip light source, the lower of detection camera is equipped with coaxial light source;A kind of visual inspection devices for mobile phone panel back baseband after gluing provided by the utility model solves the overflow glue inspection after current mobile phone panel back baseband gluing, artificial detection overflow glue, time-consuming and labor-consuming problem.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone manufacturing technology, specifically to a visual inspection device for the baseband coating on the back of a mobile phone panel. Background Technology

[0002] Currently, the process flow after applying adhesive to the baseband on the back of the mobile phone panel does not include checking for excess adhesive. Manual inspection of excess adhesive is time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this invention is to provide a visual inspection device for the baseband coating on the back of a mobile phone panel, in order to solve at least one of the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A visual inspection device for baseband adhesive application on the back of a mobile phone panel includes a base, an X-axis module, an X-axis linear guide rail, a Y-axis module, a camera mounting bracket, a barcode scanner, and a detection camera. The X-axis module and the X-axis linear guide rail are mounted on the base, and the Y-axis module is mounted on the X-axis module and slides with the X-axis linear guide rail. A material loading platform is provided on the Y-axis module. The barcode scanner and the detection camera are mounted on the camera mounting bracket. A strip light source is provided below the barcode scanner, and a coaxial light source is provided below the detection camera. The barcode scanner is used to acquire images of the ID code on the back of the mobile phone panel on the material loading platform, and the detection camera is used to acquire images of the baseband adhesive application status on the back of the mobile phone panel on the material loading platform.

[0006] In this technical solution, the Y-axis module is mounted on the X-axis module, and the Y-axis module slides with the X-axis linear guide. The Y-axis module moves along the X-axis module in the X-direction, and the X-axis linear guide improves the stability of the Y-axis module's movement. Since the loading platform is mounted on the Y-axis module, the Y-axis module can drive the loading platform to move in the Y-direction, allowing the product on the loading platform to move along the Y-direction below the barcode scanner and the inspection camera. The camera mounting bracket houses the barcode scanner and the inspection camera. A light source is located below the barcode scanner, and a coaxial light source is located below the inspection camera. When the product on the loading platform is moved to a position directly below the barcode scanner, the barcode scanner captures an image of the ID code on the back of the phone panel on the loading platform. When the product on the loading platform is moved to a position directly below the inspection camera, the inspection camera captures an image of the baseband adhesive application status on the back of the phone panel on the loading platform. This device uses a Mitsubishi Q-series PLC as the control unit and is equipped with a vision inspection system to perform visual inspection on the product's barcode reading and adhesive application. It can detect defects such as missing / broken adhesive, adhesive on ICs, adhesive contact with ICs, adhesive application accuracy, UV and ACF adhesive differentiation, four-sided sealing capability, and IC surface crack detection. The final result is returned to the PLC. In operation, the material platform receives the material from upstream and moves sequentially to directly below the barcode scanner and inspection camera, performing barcode scanning and adhesive application inspections. It then moves to a standby position to await inspection results, and based on the results, it performs re-scanning, rejects OK and NG products. In summary, this device can complete barcode scanning and adhesive overflow inspection of a single product in a short time, solving the problem of time-consuming and labor-intensive manual inspection of adhesive overflow after baseband adhesive application on the back of mobile phone panels.

[0007] Furthermore, in order to adjust the angle of the strip light source according to the needs of image acquisition, the strip light source includes a light source mounting sheet metal and a light source. The two ends of the light source are rotatably connected to two side plates of the light source mounting sheet metal. The side plates are provided with arc-shaped holes, and the two ends of the light source are provided with connecting holes. The angle of the light source is adjusted by fastening the screws through the arc-shaped holes and connecting holes.

[0008] Furthermore, to facilitate the installation of the Y-axis module, a module base plate is provided at the lower end of the Y-axis module. A support is provided at one end of the module base plate, and a slider is provided at the lower end of the support. The slider slides in cooperation with the X-axis linear guide rail, and the other end of the module base plate is fixedly connected to the slide table of the X-axis module.

[0009] Furthermore, to facilitate the installation and adjustment of the detection camera, a first base plate extending downwards is provided on the middle crossbeam of the camera mounting bracket. A first X-axis dovetail slide and an X-axis slide rail are provided on one side of the first base plate. The X-axis slide rail is located below the first X-axis dovetail slide, and an X-axis slider is slidably connected to the X-axis slide rail. A first camera mounting plate is provided on the adjustable slide base of the first X-axis dovetail slide and the X-axis slider. A first camera adjustment plate is provided on the front of the first camera mounting plate, and the height of the first camera adjustment plate relative to the first camera mounting plate is adjustable. Two vertically distributed camera fixing plates are provided on the first camera adjustment plate, and the detection camera and camera lens are fixedly mounted on the camera fixing plates. A first light source mounting plate is provided on the back of the first camera mounting plate, and a coaxial light source is mounted on the first light source mounting plate, located directly below the detection camera.

[0010] Furthermore, in order to simultaneously detect excess adhesive on two products and improve efficiency, the first X-axis dovetail groove slide is provided with two first adjustable slides.

[0011] Furthermore, to facilitate the installation and adjustment of the barcode scanner, a second base plate extending downwards is provided on the front crossbeam of the camera mounting bracket. A second X-axis dovetail slide is provided on one side of the second base plate. A second camera mounting plate is provided on the adjustable slide of the second X-axis dovetail slide. A second camera adjustment plate is provided on the front of the second camera mounting plate. The height of the second camera adjustment plate relative to the second camera mounting plate is adjustable. A manual displacement stage is provided on the second camera adjustment plate. The barcode scanner is mounted on the manual displacement stage. A second light source mounting plate is provided on the back of the second camera mounting plate. The bar light source is mounted on the second light source mounting plate and is located on one side below the barcode scanner.

[0012] Furthermore, in order to enable simultaneous scanning of two products and improve efficiency, the second X-axis dovetail groove slide is equipped with two second adjustable slides.

[0013] Furthermore, in order to simultaneously displace two products, the loading platform is provided with two loading positions for placing the products.

[0014] Furthermore, to achieve better scanning and adhesive overflow detection results, the detection camera is a 20-megapixel area array camera with a resolution of 5472*3648 and a lens working distance of 200mm. The coaxial light source is a blue coaxial light source with a pixel accuracy of 0.008mm / pixel. The scanning camera is a 6-megapixel area array camera with a resolution of 3000*2000 and a lens working distance of 220±40mm. The strip light source is a white strip light source with an angle adjustment range of ±20°.

[0015] The beneficial effects of this utility model are as follows: In this technical solution, since the Y-axis module is set on the X-axis module and the Y-axis module slides in cooperation with the X-direction linear guide, the Y-axis module moves along the X-axis module in the X-direction. The X-direction linear guide can improve the stability of the movement of the Y-axis module. Since the loading platform is set on the Y-axis module, the Y-axis module can drive the loading platform to move in the Y-direction, so that the product on the loading platform can move along the Y-direction to below the barcode scanner and the detection camera. Since the camera mounting bracket is equipped with a barcode scanner and a detection camera, a strip light source is provided below the barcode scanner, and a coaxial light source is provided below the detection camera, when the product on the loading platform is moved to a position directly below the barcode scanner, the barcode scanner captures an image of the ID code on the back of the mobile phone panel on the loading platform. When the product on the loading platform is moved to a position directly below the detection camera, the detection camera captures an image of the baseband adhesive coating state on the back of the mobile phone panel on the loading platform. This device uses a Mitsubishi Q-series PLC as the control unit and is equipped with a vision inspection system to perform visual inspection on the product's barcode reading and adhesive application. It can detect defects such as missing / broken adhesive, adhesive on ICs, adhesive contact with ICs, adhesive application accuracy, UV and ACF adhesive differentiation, four-sided sealing capability, and IC surface crack detection. The final result is returned to the PLC. In operation, the material platform receives the material from upstream and moves sequentially to directly below the barcode scanner and inspection camera, performing barcode scanning and adhesive application inspections. It then moves to a standby position to await inspection results, and based on the results, it performs re-scanning, rejects OK and NG products. In summary, this device can complete barcode scanning and adhesive overflow inspection of a single product in a short time, solving the problem of time-consuming and labor-intensive manual inspection of adhesive overflow after baseband adhesive application on the back of mobile phone panels. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0017] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0018] Figure 3 This is a first-view structural diagram of the camera component in this utility model;

[0019] Figure 4 This is a schematic diagram of the second-view structure of the camera part in this utility model.

[0020] In the diagram: 1. Base; 2. X-axis module; 3. X-axis linear guide rail; 4. Y-axis module; 5. Camera mounting bracket; 5.1. Middle crossbeam; 5.2. Front crossbeam; 6. Bar scanner camera; 7. Detection camera; 8. Material loading platform; 8.1. Material loading position; 9. Strip light source; 9.1. Light source mounting sheet metal; 9.2. Side plate; 9.3. Arc-shaped hole; 9.4. Connecting hole; 9.5. Coaxial light source; 10. Module base plate; 11. Support; 12. Slider; 13. First base plate; 14. First X-axis dovetail groove slide; 15. X-axis slide rail; 16. X-axis slider; 17. First camera mounting plate; 18. First camera adjustment plate; 19. Camera fixing plate; 20. First light source mounting plate; 21. First adjustable slide; 22. Second base plate; 23. Second X-axis dovetail groove slide; 24. Second camera mounting plate; 25. Second camera adjustment plate; 26. Manual displacement stage; 27. Second light source mounting plate; 28. Second adjustable slide; 29. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0022] Example 1:

[0023] like Figures 1-4 As shown, this embodiment provides a visual inspection device for the baseband adhesive coating on the back of a mobile phone panel. It includes a base 1, an X-axis module 2, an X-direction linear guide rail 3, a Y-axis module 4, a camera mounting bracket 5, a barcode scanner 6, and a detection camera 7. The X-axis module 2 and the X-direction linear guide rail 3 are mounted on the base 1, and the Y-axis module 4 is mounted on the X-axis module 2. The Y-axis module 4 slides with the X-direction linear guide rail 3. A material loading platform 8 is mounted on the Y-axis module 4. The barcode scanner 6 and the detection camera 7 are mounted on the camera mounting bracket 5. A strip light source 9 is located below the barcode scanner 6, and a coaxial light source 10 is located below the detection camera 7. The barcode scanner 6 is used to acquire images of the ID code on the back of the mobile phone panel on the material loading platform 8, and the detection camera 7 is used to acquire images of the baseband adhesive coating status on the back of the mobile phone panel on the material loading platform 8.

[0024] In this technical solution, since the Y-axis module 4 is mounted on the X-axis module 2, and the Y-axis module 4 slides in conjunction with the X-axis linear guide 3, the Y-axis module 4 moves along the X-axis module 2 in the X-direction. The X-axis linear guide 3 can improve the stability of the movement of the Y-axis module 4. Since the loading platform 8 is mounted on the Y-axis module 4, the Y-axis module 4 can drive the loading platform 8 to move in the Y-direction, so that the product on the loading platform 8 can move along the Y-direction to below the barcode scanner 6 and the detection camera 7. Since the barcode scanner 6 and the detection camera 7 are mounted on the camera mounting bracket 5, a light source 9 is located below the barcode scanner 6, and a coaxial light source 10 is located below the detection camera 7. When the product on the loading platform 8 is moved to a position directly below the barcode scanner 6, the barcode scanner 6 captures an image of the ID code on the back of the mobile phone panel on the loading platform 8. When the product on the loading platform 8 is moved to a position directly below the detection camera 7, the detection camera 7 captures an image of the baseband adhesive coating status on the back of the mobile phone panel on the loading platform 8. This device uses a Mitsubishi Q-series PLC as the control unit and is equipped with a vision inspection system to perform visual inspection on the product's barcode reading and adhesive application. It can detect defects such as missing / broken adhesive, adhesive on ICs, adhesive contact with ICs, adhesive application accuracy, UV and ACF adhesive differentiation, four-sided sealing capability, and IC surface crack detection. The final result is returned to the PLC. In operation, the material platform 8 receives the material from upstream and moves to directly below the barcode scanner 6 and inspection camera 7, performing barcode scanning and adhesive application inspections. It then moves to a standby position to await inspection results, and based on the results, it performs re-scanning, rejects OK and NG products. In summary, this device can complete barcode scanning and adhesive overflow detection for a single product in a short time, solving the problem of time-consuming and labor-intensive manual inspection of adhesive overflow after baseband adhesive application on the back of mobile phone panels.

[0025] Example 2:

[0026] This embodiment is an optimization based on the above embodiment 1.

[0027] To adjust the angle of the strip light source 9 according to the image acquisition requirements, the strip light source 9 includes a light source mounting sheet metal 9.1 and a light source 9.2. The two ends of the light source 9.2 are rotatably connected to the two side plates 9.3 of the light source mounting sheet metal 9.1. The side plates 9.3 are provided with arc-shaped holes 9.4, and the two ends of the light source 9.2 are provided with connecting holes 9.5. The angle of the light source 9.2 is adjusted by tightening screws through the arc-shaped holes 9.4 and connecting holes 9.5.

[0028] Example 3:

[0029] This embodiment is an optimization based on the above embodiment 1.

[0030] To facilitate the installation of the Y-axis module 4, a module base plate 11 is provided at the lower end of the Y-axis module 4. A support 12 is provided at one end of the module base plate 11, and a slider 13 is provided at the lower end of the support 12. The slider 13 is slidably engaged with the X-axis linear guide rail 3, and the other end of the module base plate 11 is fixedly connected to the slide of the X-axis module 2.

[0031] Example 4:

[0032] This embodiment is an optimization based on the above embodiment 1.

[0033] To facilitate the installation and adjustment of the detection camera 7, a first base plate 14 extending downwards is provided on the middle crossbeam 5.1 of the camera mounting bracket 5. A first X-direction dovetail slide 15 and an X-direction slide rail 16 are provided on one side of the first base plate 14. The X-direction slide rail 16 is located below the first X-direction dovetail slide 15. An X-direction slider 17 is slidably connected to the X-direction slide rail 16. A first camera mounting plate 18 is provided on the adjustable slide of the first X-direction dovetail slide 15 and the X-direction slider 17. A first camera adjustment plate 19 is provided on the front of the first camera mounting plate 18. The height of the first camera adjustment plate 19 relative to the first camera mounting plate 18 is adjustable. Two vertically distributed camera fixing plates 20 are provided on the first camera adjustment plate 19. The detection camera 7 and the camera lens are fixedly mounted on the camera fixing plate 20. A first light source mounting plate 21 is provided on the back of the first camera mounting plate 18. A coaxial light source 10 is mounted on the first light source mounting plate 21. The coaxial light source 10 is located directly below the detection camera 7.

[0034] Example 5:

[0035] This embodiment is an optimization based on the above embodiment 4.

[0036] In order to simultaneously detect excess adhesive on two products and improve efficiency, two first adjustable slides 22 are provided on the first X-axis dovetail groove slide 15.

[0037] Example 6:

[0038] This embodiment is an optimization based on the above embodiment 1.

[0039] To facilitate the installation and adjustment of the barcode scanner 6, a second base plate 23 extending downwards is provided on the front crossbeam 5.2 of the camera mounting bracket 5. A second X-direction dovetail slide 24 is provided on one side of the second base plate 23. A second camera mounting plate 25 is provided on the adjustable slide of the second X-direction dovetail slide 24. A second camera adjustment plate 26 is provided on the front of the second camera mounting plate 25. The height of the second camera adjustment plate 26 relative to the second camera mounting plate 25 is adjustable. A manual displacement stage 27 is provided on the second camera adjustment plate 26. The barcode scanner 6 is mounted on the manual displacement stage 27. A second light source mounting plate 28 is provided on the back of the second camera mounting plate 25. A strip light source 9 is mounted on the second light source mounting plate 28. The strip light source 9 is located on one side below the barcode scanner 6.

[0040] Example 7:

[0041] This embodiment is an optimization based on the above embodiment 6.

[0042] In order to enable simultaneous scanning of two products and improve efficiency, two second adjustable slides 29 are provided on the second X-axis dovetail groove slide 24.

[0043] Example 8:

[0044] This embodiment is an optimization based on the above embodiment 1.

[0045] In order to achieve the displacement of two products at the same time, the loading platform 8 is provided with two loading positions 8.1 for placing products.

[0046] Example 9:

[0047] This embodiment is an optimization based on the above embodiment 2.

[0048] To achieve better scanning and adhesive overflow detection results, the inspection camera 7 is a 20-megapixel area array camera with a resolution of 5472*3648 and a lens working distance of 200mm. The coaxial light source 10 is a blue coaxial light source with a pixel accuracy of 0.008mm / pixel. The barcode scanning camera 6 is a 6-megapixel area array camera with a resolution of 3000*2000 and a lens working distance of 220±40mm. The bar light source 9 is a white bar light source with an angle adjustment range of ±20°.

[0049] This technical solution allows for the traceability of AOI coating information by product ID. A daily Excel spreadsheet containing accuracy data, AOI judgment results, time, and ID is generated, while related images and logs for each product are saved in a separate folder. This solution can display and record product inspection judgment results and reasons for NG (Not Acceptable) determinations, enabling traceability of relevant inspection records and providing high-resolution original images. This reduces the outflow of defective products to downstream equipment, playing a transformative role in ensuring coating accuracy and quality control.

[0050] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A visual inspection device for the baseband adhesive coating on the back of a mobile phone panel, characterized in that: The device includes a base, an X-axis module, an X-axis linear guide rail, a Y-axis module, a camera mounting bracket, a barcode scanner, and a detection camera. The X-axis module and the X-axis linear guide rail are mounted on the base, and the Y-axis module is mounted on the X-axis module. The Y-axis module slides with the X-axis linear guide rail. A material loading platform is mounted on the Y-axis module. The camera mounting bracket houses the barcode scanner and the detection camera. A strip light source is located below the barcode scanner, and a coaxial light source is located below the detection camera. The barcode scanner is used to capture images of the ID code on the back of the mobile phone panel on the material loading platform, and the detection camera is used to capture images of the baseband adhesive coating status on the back of the mobile phone panel on the material loading platform.

2. The visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 1, characterized in that: The light source includes a light source mounting sheet metal and a light source. The two ends of the light source are rotatably connected to two side plates of the light source mounting sheet metal. The side plates are provided with arc-shaped holes, and the two ends of the light source are provided with connection holes. The angle of the light source can be adjusted by fastening the screws through the arc-shaped holes and the connection holes.

3. The visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 1, characterized in that: The lower end of the Y-axis module is provided with a module base plate, one end of the module base plate is provided with a support, the lower end of the support is provided with a slider, the slider is slidably engaged with the X-axis linear guide rail, and the other end of the module base plate is fixedly connected to the slide table of the X-axis module.

4. The visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 1, characterized in that: The camera mounting bracket has a downwardly extending first base plate on its central crossbeam. A first X-axis dovetail slide and an X-axis slide rail are located on one side of the first base plate. The X-axis slide rail is located below the first X-axis dovetail slide. An X-axis slider is slidably connected to the X-axis slide rail. A first camera mounting plate is mounted on the adjustable slide base of the first X-axis dovetail slide and the X-axis slider. A first camera adjustment plate is located on the front of the first camera mounting plate. The height of the first camera adjustment plate relative to the first camera mounting plate is adjustable. Two vertically distributed camera fixing plates are located on the first camera adjustment plate. The detection camera and camera lens are fixedly mounted on the camera fixing plate. A first light source mounting plate is located on the back of the first camera mounting plate. A coaxial light source is mounted on the first light source mounting plate and is located directly below the detection camera.

5. A visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 4, characterized in that: The first X-axis dovetail groove slide is provided with two first adjustable slide seats.

6. The visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 1, characterized in that: The front crossbeam of the camera mounting bracket is provided with a downwardly extending second base plate. A second X-direction dovetail groove slide is provided on one side of the second base plate. A second camera mounting plate is provided on the adjustable slide of the second X-direction dovetail groove slide. A second camera adjustment plate is provided on the front of the second camera mounting plate. The height position of the second camera adjustment plate relative to the second camera mounting plate is adjustable. A manual displacement stage is provided on the second camera adjustment plate. The barcode scanner is mounted on the manual displacement stage. A second light source mounting plate is provided on the back of the second camera mounting plate. The barcode scanner is mounted on the second light source mounting plate and is located on one side below the barcode scanner.

7. A visual inspection device for baseband adhesive application on the back of a mobile phone panel according to claim 6, characterized in that: The second X-axis dovetail groove slide is provided with two second adjustable slides.

8. A visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 1, characterized in that: The loading platform has two loading positions for placing products.

9. A visual inspection device for the baseband coating on the back of a mobile phone panel according to claim 2, characterized in that: The detection camera is a 20-megapixel area array camera with a resolution of 5472*3648 and a lens working distance of 200mm. The coaxial light source is a blue coaxial light source with a pixel accuracy of 0.008mm / pixel. The barcode scanning camera is a 6-megapixel area array camera with a resolution of 3000*2000 and a lens working distance of 220±40mm. The bar light source is a white bar light source with an angle adjustment range of ±20°.

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