EM-320 inspection machine is a matching product of flexographic printing machine and automatic label die-cutting machine. It belongs to small printing auxiliary equipment. It is used to check the quality of flexographic printing and die-cut label paper products, and has automatic meter counting function. The whole machine has the characteristics of compact structure, high speed, high efficiency of frequency conversion and speed regulation, simple and stable operation. The inspection method is mainly through the forward and reverse operation. According to the experience, the operator finds that the printed part is manually cut off and reattached with tape. At the same time, it is also used to rewind the paper with irregular end faces to make it elastic and uniform.