Ejecting method of a molding in an injection molding apparatus

A method of ejecting a molding from an injection molding apparatus, the injection molding apparatus having a movable die that opens from and closes to a corresponding stationary die, the movable die having:

• a die fitting member;
• a die body movably attached to the die fitting member that moves toward the stationary die;
• a movable insert located in an insert guide, mounted to the die body so as to be located adjacent the stationary member, the insert guide forming a cavity in which the insert is located that opens toward the stationary die;
• a holding member for holding the insert in the insert guide, wherein the holding member is biased by an elastic member to constantly urge the insert in a direction opposite to the direction of the stationary die and;
• an eject pin that extends against the holding member for pushing the holding member and the insert towards the stationary die so that a molten resin fed into the cavity is compressed with the insert by the advancement of the die fitting member toward the stationary die, the die fitting member is retracted to separate the movable die from the stationary die, and the molding is pushed out by the insert by moving the holding member with the eject pin toward the die fitting member, said method of ejecting the molding from the injection molding apparatus comprising the steps of:
• retracting the die fitting member from the stationary die after the compression of the molding while maintaining the die body and the insert guide closed against the stationary die and, simultaneously with said retraction of the die fitting member, preliminarily ejecting the molding by advancing the insert a predetermined distance toward the stationary die relative to said die fitting member by moving the holding member toward the stationary die with the eject pin;
• after said retraction of said die fitting member and said advancement of said insert, separating the movable die from the stationary die;
• and
• fully ejecting the molding by pushing the molding out of the cavity with the insert by moving the holding member with the eject pin.