Design exhaust frock

The utility model aims to solve the technical problem that a design exhaust frock that the difficult production of the effectual blank of exhaust is deformed is provided. For realizing above -mentioned purpose, this design exhaust frock is including the exhaust conducting structure, the exhaust conducting structure includes the cavity structure, this cavity structure and external intercommunication, and the conducting structure surface of exhausting simultaneously is equipped with the through -hole of intercommunication cavity structure, the cavity structure is the exhaust chamber, and the through -hole is the exhaust hole, the outer wall profile of the conducting structure that should exhaust and the adaptation of the inner chamber profile phase of blank, it is filled with the sand burning to spread between exhaust conducting structure and blank.