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US 12,508,760 B2Granted
Injection nozzle, injection apparatus, and injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorKiyotaka Nakayama
Life of this patent
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Abstract
An injection nozzle is attachable to a tip end of a heating cylinder and having an in-nozzle flow path formed therein. The injection nozzle is attached to the heating cylinder by being pressed against the heating cylinder by a nozzle pressing member that is fixed to an end surface of a tip end of the heating cylinder. An outer peripheral surface of the injection nozzle has a sensor hole that is opened at a position contacting the nozzle pressing member, and a temperature sensor is inserted into the sensor hole.
Claims17
An injection nozzle attachable to a tip end of a heating cylinder and comprising:
- an in-nozzle flow path formed therein,
- wherein the injection nozzle is attached to the heating cylinder by being pressed against the heating cylinder by a nozzle pressing member, the nozzle pressing member being fixed to an end surface of a tip end of the heating cylinder,
- wherein an outer peripheral surface of the injection nozzle has a sensor hole, the sensor hole being opened in the outer peripheral surface of the injection nozzle at a position contacting the nozzle pressing member, and wherein a temperature sensor is inserted into the sensor hole,
- wherein a flow path cross-sectional area of the in-nozzle flow path changes at several locations in a flow direction, and
- wherein the temperature sensor is configured to measure a resin temperature at a portion where a reduction rate of the flow path cross-sectional area in the flow direction of the in-nozzle flow path is highest.
2 more elements
An injection apparatus comprising:
- a heating cylinder;
- a screw housed in the heating cylinder;
- and
- an injection nozzle attached to a tip end of the heating cylinder and having an in-nozzle flow path formed therein,
- wherein the injection nozzle is attached to the heating cylinder by being pressed against the heating cylinder by a nozzle pressing member, the nozzle pressing member being fixed to an end surface of a tip end of the heating cylinder,
- wherein an outer peripheral surface of the injection nozzle has a sensor hole, the sensor hole being opened in the outer peripheral surface of the injection nozzle at a position contacting the nozzle pressing member, and
- wherein a temperature sensor is inserted into the sensor hole via a through hole that is opened in the nozzle pressing member,
- wherein a flow path cross-sectional area of the in-nozzle flow path changes at several locations in a flow direction, and
- wherein the temperature sensor is configured to measure a resin temperature at a portion where a reduction rate of the flow path cross-sectional area in the flow direction of the in-nozzle flow path is highest.
6 more elements
An injection molding machine comprising:
- a mold clamping device;
- and
- an injection apparatus comprising:
- a heating cylinder;
- a screw housed in the heating cylinder;
- and
- an injection nozzle attached to a tip end of the heating cylinder and having an in-nozzle flow path formed therein;
- wherein the injection nozzle is attached to the heating cylinder by being pressed against the heating cylinder by a nozzle pressing member, the nozzle pressing member being fixed to an end surface of a tip end of the heating cylinder,
- wherein an outer peripheral surface of the injection nozzle has a sensor hole, the sensor hole being opened in the outer peripheral surface of the injection nozzle at a position contacting the nozzle pressing member,
- wherein a temperature sensor is inserted into the sensor hole via a through hole that is opened in the nozzle pressing member,
- wherein a flow path cross-sectional area of the in-nozzle flow path changes at several locations in a flow direction, and
- wherein the temperature sensor is configured to measure a resin temperature at a portion where a reduction rate of the flow path cross-sectional area in the flow direction of the in-nozzle flow path is highest.
9 more elements
Dependencies are inferred from the claim text.