Internal purging device of thermal forming die

The utility model provides an inner purging device of a thermal forming mold, which is applied to a thermal forming mold main body to purge the surface of the thermal forming mold main body, and comprises an inner purging assembly arranged on the outer wall of one side of the thermal forming mold main body, and an outer purging assembly arranged on the outer wall of the other side of the thermal forming mold main body, the inner purging assembly comprises a driving part arranged on the outer wall of one side of the thermal forming mold main body; the air supply extraction piece is arranged at the top of the driving part; and the purging part is arranged above the air supply extraction piece. According to the technical scheme, the driving part enables the air supply extraction piece and the blowing part to reciprocate on one side of the thermal forming die body, the blowing range is widened, the blowing efficiency is improved, meanwhile, when compressed air enters the flow dividing base and then is sprayed fro