Automatic screw machine

The utility model discloses an automatic screw machine which comprises a base, displacement assemblies arranged on the two sides of the base and a running assembly arranged above the base, the base comprises a transverse moving mechanism arranged at the upper ends of the displacement assemblies, a placing mechanism and a cleaning mechanism, and the placing mechanism and the cleaning mechanism are arranged on the upper surface of the base. An electric push rod stretches out and draws back to drive a telescopic branch pipe to move, cleaning cotton on the surface of the telescopic branch pipe can clean waste scraps on the surface of a containing plate and collect the waste scraps into a collecting groove, then the waste scraps in the collecting groove are sucked out through suction airflow generated by an external pipe, the waste scrap cleaning efficiency is improved, meanwhile, the suction airflow generated by the external pipe is utilized, and the waste scraps can be cleaned conveniently. The air flow speed ne