In order to achieve the goal of lean manufacturing and quality controlling on production,this article uses the principle of mirror reflection to visually check the status of brushing glue in the blind area of visual field,and completely avoid serious water leakage accidents caused by poor weld coverage caused by the operator's blind brushing glue in the blind area of visual field.Secondly,with the help of the mold,the palm force is used to press the installation of the glue plug instead of the thumb press,which significantly reduces the risk of the glue plug falling off;In addition,the program can automatically monitor hot melt adhesive plugging installation by using camera capture coding recognition,which fundamentally solves the serious quality defects caused by glue plugging installation and truly realizes zero defects in the quality control of painting workshop.