Patent ID: 11911945
Assignee: SODICK CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. An injection molding method of an injection molding machine, wherein the injection molding machine comprises: a plasticizing unit which plasticizes a molding material inside a plastication cylinder by the rotation of a screw, and an injection unit comprising a plunger which reciprocally moves inside an injection chamber,
the injection molding method of the injection molding machine performs: a metering step in which the screw is rotated in a normal clockwise or counter-clockwise rotation direction, the molding material is extruded from the plastication cylinder into the injection chamber, the plunger is moved backward, and then the plunger is stopped in a metering completion position; and
a pushing-back step in which after the metering step, the screw is rotated in a corresponding reverse counter-clockwise or clockwise rotation direction, the plunger is moved forward, and the molding material is extruded from the inside of the injection chamber to the plastication cylinder.