A glass detection device and process

Abstract

The present invention provides a glass detection device, which can be used to collect flatness data of glass, consumes less manpower, and can improve the detection efficiency. It includes a detection platform for placing the glass to be detected, a light source and a camera located above the detection platform, and is characterized in that: the detection platform is installed on a rotating mechanism, and the rotating mechanism is installed on a frame through a horizontal moving mechanism. In addition, a glass detection process using the above glass detection device is also provided.

Description

Technical Field

[0001] The present invention relates to the technical field of glass detection, and particularly to a glass detection device and process. Background Art

[0002] With the rise of smart phones, cover glass is extremely widely used in the electronics industry. The production of cover glass has strict processes, including CNC (processing technologies such as shaping and drilling of glass products), tempering (strengthening of glass products), polishing (processing the surface finish and flatness of glass products), screen printing (ink covering and printing logos on glass products), coating, cleaning, etc. Each production link involves glass quality inspection. Currently, the technology mainly combines the use of a coordinate measuring machine to measure product dimensions and manual inspection of product flatness. Manual inspection results in more than 25% of the enterprise's workforce being engaged in inspection work. On the one hand, a large amount of manpower input not only brings cost increases but also cannot effectively guarantee the quality inspection pass rate. On the other hand, during quality inspection, workers need to observe the glass appearance under strong light for a long time, which will affect the eyesight of the inspection personnel. Summary of the Invention

[0003] In view of the above problems, the present invention provides a glass detection device and process, which can be used to collect flatness data of glass, consume less manpower, and improve the detection efficiency.

[0004] The technical solution is as follows: A glass detection device includes a detection platform for placing the glass to be detected, a light source and a camera located above the detection platform. It is characterized in that: the detection platform is installed on a rotating mechanism, and the rotating mechanism is installed on a frame through a horizontal moving mechanism.

[0005] It is further characterized in that:

[0006] The camera is connected with a lens, the lens is installed on an installation bracket on the frame through a lens mounting plate, and the camera is electrically connected to a controller;

[0007] The light source is installed on an angle adjustment mechanism, and the angle adjustment mechanism is connected to the installation bracket on the frame through an installation bracket and a connecting block;

[0008] A fixture is provided on the detection platform, and a planar light source is provided under the detection platform;

[0009] A light shield is further provided around the installation bracket.

[0010] A glass detection process using the above glass detection device is characterized in that it includes the following steps:

[0011] Step 1: Place the glass to be detected on the detection platform, and project a light beam onto the glass to be detected through a light source to form reflected light from the upper surface of the glass and reflected light from the lower surface of the glass;

[0012] Step 2: Control the lateral displacement of the glass through a horizontal movement mechanism and receive the reflected light from the upper surface of the glass and the reflected light from the lower surface of the glass through a camera to form lateral data;

[0013] Step 3: Rotate the glass 90 degrees through a rotating mechanism and control its lateral displacement through a horizontal movement mechanism. Record the reflected light information of the upper and lower surfaces of the glass through a camera to form longitudinal data;

[0014] Step 4: Analyze the lateral data and longitudinal data of the glass to judge the flatness of the glass.

[0015] It is further characterized in that:

[0016] When the planar light source of the detection platform is lit, a planar image of the glass is taken through a camera for analyzing the planar size of the glass.

[0017] The beneficial effects of the present invention are as follows: Compared with the traditional manual visual inspection of flatness, by adopting the above-mentioned equipment and method, it is possible to use a camera to receive the reflected light data of the upper and lower surfaces. At the same time, by controlling the movement of the glass through a horizontal movement mechanism, the reflected light data of the entire glass can be obtained, and the reflected light data in the horizontal and vertical directions of the glass can be obtained through a rotating mechanism, so that the lateral flatness data and longitudinal flatness data of the glass to be detected can be quickly collected, thereby improving the detection efficiency and consuming less manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the equipment of the present invention;

[0019] Figure 2 It is a schematic diagram of the detection process of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] Such as Figure 1A glass detection device as shown, which includes a detection platform 8 for placing the glass 13 to be detected, a light source 4 and a camera 2 located above the detection platform 8. A fixture 12 is provided on the detection platform 8, and the glass 13 to be detected is fixed on the detection platform 8 through the fixture 12. The camera 2 is connected with a lens 1, and the lens 1 is installed on an installation bracket 18 on the frame 17 through a lens mounting plate 3. The camera 2 is electrically connected to a controller. The distance between the lens 1 and the glass corresponds to the focal length of the lens 1. The light source 4 is installed on an angle adjustment mechanism 5, and the incident angle of the light source 4 is adjusted through the angle adjustment mechanism 5. The angle adjustment mechanism 5 is connected to the installation bracket 18 on the frame 17 through an installation bracket 6 and a connecting block 7. The detection platform 8 is installed on a rotation mechanism 10, and the rotation mechanism 10 can adopt a motor. The rotation mechanism 10 is installed on the frame 17 through a horizontal movement mechanism. The horizontal movement mechanism includes a horizontal movement execution mechanism 11 and a horizontal movement support platform 14 installed on the horizontal movement execution mechanism 11. The horizontal movement mechanism can adopt an electric slide rail. A planar light source 9 is provided under the detection platform. A light-shielding plate 15 is also arranged around the installation bracket 18. Components such as the planar light source 9 and the rotation mechanism 10 can be connected to the power supply through a drag chain 16.

[0021] Combined with Figure 1 、 Figure 2 , the following introduces the detection process using the above device. Step 1: Place the glass 13 to be detected on the detection platform 8, and project a light beam onto the glass 13 to be detected through the light source 4 to form an upper surface reflected light 19 and a lower surface reflected light 20. The light source 4 adopts a laser, and the included angle between the central axis of the laser and the central axis of the lens 1 is greater than or equal to 5 degrees and less than or equal to 85 degrees. As Figure 2 shown, a light beam is formed through the laser, and the length of the light beam is greater than the length and width of the glass to be detected, so that a light band corresponding to the length or width can be formed.

[0022] Step 2: Control the glass to move horizontally from left to right through the horizontal movement mechanism and use the camera 2 to capture the upper surface reflected light 19 of the entire glass and the lower surface reflected light 20 of the entire glass to form horizontal data.

[0023] Step 3: Rotate the glass 90 degrees through the rotation mechanism 10 and control its horizontal displacement from right to left through the horizontal movement mechanism. Use the camera 2 to record the reflected light information on the upper and lower surfaces of the entire glass to form vertical data.

[0024] Step 4: Combine and analyze the horizontal data and vertical data of the glass through a computer to judge the flatness of the glass.

[0025] At the same time during the above horizontal movement, light up the planar light source 9 and use the camera 2 to capture the planar image of the glass for analyzing the planar size of the glass.

[0026] Since changes in the flatness of the glass will change the shape and position of the reflected light, the lateral data can be used to analyze the thickness deviation of the glass and whether the surface is scratched. However, the lateral data alone cannot completely rule out the situation where the glass is bent and tilted at both ends while the thickness is uniform. By rotating the glass 90 degrees and obtaining the longitudinal data, it can be combined with the lateral data to analyze whether the glass is warped. Specifically, if the lateral data is normal and the reflected light in the longitudinal data is bent, it can be considered that warping has occurred. In addition, the glass size data can be calculated by shooting the plane figure with camera 2, which is more convenient than three-coordinate measurement. There is no need to divide the size and flatness measurement into two processes for detection. It can be completed with only one machine, further improving the detection efficiency.

[0027] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A glass detection process, characterized in that, It includes: Glass inspection equipment; The glass inspection equipment includes an inspection platform for placing the glass to be inspected, a light source and a camera located above the inspection platform. It is characterized in that: the inspection platform is installed on a rotating mechanism, and the rotating mechanism is installed on a frame through a horizontal moving mechanism; The light source is a linear laser, and the incident angle forms a certain angle with the plane of the glass. Two light rays are formed in the camera through the reflection on the upper surface of the glass and the total reflection on the lower surface, and the quality of two surfaces can be detected simultaneously; A clamp is provided on the inspection platform, and a planar light source is provided under the inspection platform to detect the external dimensions; A light-shielding plate is also arranged around the mounting bracket; The rotating mechanism uses a motor; The light source uses a laser, and the beam length is greater than the length and width of the glass to be inspected, so as to form a light band corresponding to the length or width; It includes the following inspection steps: Step 1: Place the glass to be inspected on the inspection platform, and project the light beam onto the glass to be inspected through the light source to form a reflected light ray on the upper surface of the glass and a reflected light ray on the lower surface of the glass; Step 2: Control the lateral displacement of the glass through the horizontal moving mechanism and receive the reflected light ray on the upper surface of the glass and the reflected light ray on the lower surface of the glass through the camera to form lateral data; Step 3: Rotate the glass 90 degrees through the rotating mechanism and control its lateral displacement through the horizontal moving mechanism. Record the reflected light ray information on the upper and lower surfaces of the glass through the camera to form longitudinal data; Step 4: Analyze the lateral data and longitudinal data of the glass to judge the flatness of the glass; When the planar light source of the inspection platform is lit, take a planar image of the glass through the camera for analyzing the planar dimensions of the glass; The thickness deviation of the glass and whether the surface is scratched can be analyzed through the lateral data; Rotating the glass 90 degrees and obtaining the longitudinal data can be combined with the lateral data to analyze whether the glass is warped; If the lateral data is normal and the reflected light ray in the longitudinal data is bent, it can be considered that warping has occurred.

2. The glass detection process according to claim 1, characterized in that: The camera is connected with a lens, the lens is installed on a mounting bracket on the frame through a lens mounting plate, and the camera is electrically connected with a controller.

3. A glass detection process according to claim 1, characterized in that: The light source is installed on an angle adjusting mechanism, and the angle adjusting mechanism is connected with the mounting bracket on the frame through a mounting bracket and a connecting block.

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