MOLDING APPARATUS

PURPOSE: To keep the good flowability of a molding material in an injection process and to reduce the non-uniformity of the physical properties in a cooling process. CONSTITUTION: In such a state that molds 11, 13 are opened, a halogen lamp unit 17 is moved between both molds to rapidly heat the surfaces of both molds. Only the surface temps. of both molds are raised to the temp. regulated by a temp. controller 25 and, at a point of time when the surface temps. of both molds reach desired temp., the halogen lamp unit 17 is moved to the outside of both molds to clamp the molds. When a molding material is injected into a cavity 15 immediately thereafter, the molding material is filled into the cavity 15 in a state holding high flowability. In a cooling process of the molding material in the cavity 15, ultrasonic vibration is applied to the molds by an ultrasonic vibrator 21 to generate heat energy to reduce the non-uniformity of the temp. of the molding material.