Patent ID: 11565452

Abstract:
An injection molding apparatus includes a plasticizing portion, a measurement injection portion that is disposed between the plasticizing portion and a molding mold, measures the plasticized material, and injects the measured plasticized material into the molding mold, a first drive portion changing a relative position between the plasticizing portion and the measurement injection portion, a pressure detection portion detecting a pressure inside the measurement injection portion and a control portion, in which the measurement injection portion is configured such that a volume of an internal space thereof, in which the plasticized material is stored, changes according to a change in the relative position between the measurement injection portion and the plasticizing portion, and the control portion executes at least one of a measurement operation of causing the measurement injection portion to measure the plasticized material by controlling the first drive portion to move the plasticizing portion and the measurement injection portion in a direction away from each other, and an injection operation of injecting the measured plasticized material into the molding mold by controlling the first drive portion to move the plasticizing portion and the measurement injection portion in a direction approaching each other depending on the pressure.