Plastic part polishing device

The utility model discloses a plastic part polishing device in the technical field of plastic part processing, which comprises a base, a U-shaped frame is fixed at the upper end of the base, a rotating motor is mounted at the top end of the U-shaped frame, an output shaft of the rotating motor penetrates through the U-shaped frame and is connected with a clamping protection mechanism, and electric push rods are symmetrically inserted and fixed on the U-shaped frame. The movable end of the electric push rod is connected with a grinding mechanism, the clamping protection mechanism comprises a rotating cover, a first electric push rod and a clamping rod, and the grinding mechanism comprises a bottom frame, a connecting block, a mounting rod, a second electric push rod and a grinding rod; according to the scheme, the position of the bottom frame is adjusted so that the bottom frame can make contact with the bottom of the rotating cover, a protection structure is formed through the rotating cover and the bottom fr