Extrusion device of PVC hard sheet for medicine packaging

The invention relates to the technical field of PVC hard sheet extrusion, in particular to an extrusion device of a PVC hard sheet for medicine packaging, which comprises a placing frame in contact with the ground, a hot melting unit is fixedly mounted on one side of the upper end face of the placing frame, a conveying pipe is fixedly mounted on the lower portion of one side of the hot melting unit, and the conveying pipe conveys molten PVC in a hot melting barrel into a center groove. At the moment, the PVC is in a flowing state, an electric sliding block is started to drive a threaded extrusion rod to rotate, the threaded extrusion rod conveys the PVC on the rear portion of a center groove to the front side of the center groove when rotating, a heating plate in an annular groove is started at the moment, and after the flowing PVC passes through the heating plate, the heating plate conducts constant-temperature treatment on the flowing PVC, so that the PVC is prevented from being cooled in the conveying proc