INJECTION MOLDING METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To extend a forming cycle as a result of that a mold is resonated even at the time of cooling when molding is performed while the mold is resonated to prevent the gradual cooling of a resin. SOLUTION: In an apparatus performing injection molding while a mold 1 (2, 3) is wholly or partially resonated by ultrasonic vibration, an ultrasonic vibrator 8 converting the high frequency power from an ultrasonic oscillator 10 to vibration and the vibration direction converter 7 connecting the ultrasonic vibrator 8 and the mold 1 are provided. By controlling the high frequency power of the ultrasonic oscillator 10, the amplitude of resonance is changed.