Material supplementing device of plane screen printing machine

A material supplementing device of a plane screen printing machine comprises a base, a lifting track is arranged on the upper portion of the base, a lifting platform is arranged in the lifting track, a scraper is connected to the upper portion of the lifting platform in a sliding mode, a sliding table assembly capable of bearing printed products is arranged on the upper portion of the base, and material supplementing assemblies capable of automatically supplementing and feeding materials are symmetrically arranged on the left side and the right side of the base. By replacing the sliding table assembly of the printing table and adding the automatic material supplementing assembly, a series of problems caused by manual material supplementing are fundamentally solved, the life and property safety of operators is greatly guaranteed, meanwhile, the production efficiency of the screen printing machine is greatly improved, the economic benefits of factories are better guaranteed, and the production cost is reduced.