Screw adjustment method in thermosetting resin injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorKiyotaka Nakayama
Life of this patent
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Abstract
A screw adjustment method in a thermosetting resin injection molding machine including a cylinder having a nozzle at a tip end of the cylinder and a screw accommodated in the cylinder. The screw adjustment method includes: contacting a screw and nozzle including bringing a tip end surface of the screw into contact with a tip end inner surface of an inner peripheral surface of the nozzle; moving the screw backward by a specified length after the contacting of the screw and the nozzle; and determining a screw position of the screw moved backward as a most forward position of the screw in a molding cycle.
Claims12
A screw adjustment method in a thermosetting resin injection molding machine including a cylinder having a nozzle at a tip end of the cylinder and a screw accommodated in the cylinder, the screw adjustment method comprising:
- contacting a screw and nozzle including bringing a tip end surface of the screw into contact with a tip end inner surface of an inner peripheral surface of the nozzle;
- moving the screw backward by a specified length after the contacting of the screw and the nozzle;
- and
- determining a screw position of the screw moved backward as a most forward position of the screw in a molding cycle;
- wherein the contacting of the screw and the nozzle includes:
- detaching the nozzle from the cylinder;
- moving the screw forward;
- detecting a screw backward movement including attaching the nozzle to the cylinder in a state where an axial force in a forward direction is applied to the screw and detecting a backward movement of the screw.
A thermosetting resin injection device comprising:
- a cylinder provided horizontally and having a nozzle at a tip end of the cylinder;
- a screw configured to be driven in a horizontal direction in the cylinder;
- a screw driving device configured to drive the screw;
- and
- a control device,
- wherein a most forward position of the screw in a molding cycle is set in the control device, the most forward position being a screw position obtained by moving the screw backward by a specified length from a nozzle and screw contact state where a tip end surface of the screw is in contact with a tip end inner surface of an inner peripheral surface of the nozzle;
- wherein the nozzle and screw contact state is provided by:
- detaching the nozzle from the cylinder;
- moving the screw forward;
- detecting a screw backward movement including attaching the nozzle to the cylinder in a state where an axial force in a forward direction is applied to the screw and detecting a backward movement of the screw.
A thermosetting resin injection molding machine comprising:
- a mold clamping device;
- an injection device including:
- a cylinder provided horizontally and having a nozzle at a tip end of the cylinder;
- a screw configured to be driven in a horizontal direction in the cylinder;
- and
- a screw driving device configured to drive the screw;
- and
- a control device,
- wherein a most forward position of the screw in a molding cycle is set in the control device, the most forward position being a screw position obtained by moving the screw backward by a specified length from a nozzle and screw contact state where a tip end surface of the screw is in contact with a tip end inner surface of an inner peripheral surface of the nozzle;
- wherein the nozzle and crew contact state is provided by:
- detaching the nozzle from the cylinder;
- moving the screw forward;
- detecting a screw backward movement including attaching the nozzle to the cylinder in a state where an axial force in a forward direction is applied to the screw and detecting a backward movement of the screw.
Dependencies are inferred from the claim text.