Mobile phone light guide plate appearance visual detection equipment and use method thereof

Abstract

The invention discloses mobile phone light guide plate appearance visual detection equipment and a using method thereof. The mobile phone light guide plate appearance visual detection equipment comprises a detection table, the detection table is provided with a material taking station, a size detection and positioning station and an appearance detection station which are sequentially arranged in the length direction of the detection table, and the size detection and positioning station is provided with a CCD visual positioning assembly; the appearance detection station is provided with a CCD visual detection assembly; and a transfer manipulator A and a transfer manipulator B are arranged on the two sides of the detection table respectively. The using method mainly comprises the steps thatthe transfer manipulator A grabs a to-be-detected light guide plate located at the material taking station and sends the light guide plate to the CCD visual positioning assembly for size detection, and the transfer manipulator B transfers the light guide plate subjected to size detection to the CCD visual detection assembly for dotting surface appearance detection. Two indexes of the light guide plate are detected in a full-automatic step-by-step detection mode, the independent detection assembly is matched, the detection efficiency and the detection precision are improved, the online detection requirement of mass production is met, operation is easy, the overall layout is compact, and the occupied space is small.

Description

technical field [0001] The invention relates to the technical field of detection of mobile phone components, in particular to a visual detection device for the appearance of a light guide plate of a mobile phone and a method for using the same. Background technique [0002] The backlight module is one of the key components of the LCD panel. Its function is to supply sufficient brightness and evenly distributed light source so that it can display images normally. As an important part of the mobile phone backlight module, the mobile phone light guide plate is used to guide the scattering direction of light to improve the brightness of the panel and ensure the uniformity of the panel brightness. It is formed by high-precision injection molding and has strict appearance and size. Requirements, especially the light diffusion effect of the dotted surface of the light guide plate, directly affect the overall quality of the light guide plate. [0003] For the detection of the dotte...

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Problems solved by technology

[0003] For the detection of the dotted surface (v-cut surface) of the light guide plate, the more common method at present is that the workers illuminate the strong light from different angles, and then identify and detect it with the naked eye. Working for a long time can easily cause visual damage to the workers and affect the employees' safety. Its own skills and experience requirements are relatively high, resulting in relatively low detection efficiency, it is difficult to ensure good detection quality, and cannot meet the needs of mass production. Although there are some automated visual detection equipment on the market, such as the publication number "CN211318238U" , the utility model patent titled "A Device for Automatic Defect Detection of Mobile Phone Light Guide Plates", although it can be used to detect defects in light guide plates, the overall efficiency is relatively low and it is difficult to meet the needs of online detection, and because the camera is used to directly take pictures way, resulting in poor detection accuracy of the dotted surface of the light guide plate

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