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US 12,715,164 B2Granted
Molding cycle stopping method, injection device, and injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorsYasutaka Otsuji, Takashi Akagi
Life of this patent
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Abstract
A molding cycle stopping method includes: in a case of stopping an operation of a molding cycle in an injection device including a heating cylinder and a screw provided in the heating cylinder, performing a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature; and performing a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied.
Claims12
A molding cycle stopping method, comprising:
- in a case of stopping an operation of a molding cycle in an injection device including a heating cylinder and a screw provided in the heating cylinder,
- performing a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature;
- and
- performing a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied,
- wherein the continuous purge process further includes repeatedly performing a metering operation and an injection operation,
- the metering operation including rotating the screw to measure the resin,
- the injection operation including driving the screw in an axial direction to inject the resin, and
- wherein the predetermined termination condition is that an injection pressure in the injection operation exceeds a specified allowable injection pressure.
5 more elements
An injection device comprising:
- a heating cylinder;
- a screw placed in the heating cylinder;
- and
- a control device,
- wherein the control device is configured to perform a molding cycle stopping process based on detecting a stop of an operation of a molding cycle, and
- wherein the molding cycle stopping process includes:
- a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature;
- and
- a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied,
- wherein the continuous purge process further includes repeatedly performing a metering operation and an injection operation,
- the metering operation including rotating the screw to measure the resin,
- the injection operation including driving the screw in an axial direction to inject the resin, and
- wherein the predetermined termination condition is that an injection pressure in the injection operation exceeds a specified allowable injection pressure.
10 more elements
An injection molding machine comprising:
- an injection device including:
- a heating cylinder;
- and
- a screw placed in the heating cylinder;
- a mold clamping device;
- and
- a control device,
- wherein the control device is configured to perform a molding cycle stopping process based on detecting a stop of an operation of a molding cycle, and
- wherein the molding cycle stopping process includes:
- a temperature lowering process including lowering a temperature of the heating cylinder from a molding cycle execution temperature to a standby temperature;
- and
- a continuous purge process including repeatedly purging a resin until a predetermined termination condition is satisfied,
- wherein the continuous purge process further includes repeatedly performing a metering operation and an injection operation,
- the metering operation including rotating the screw to measure the resin,
- the injection operation including driving the screw in an axial direction to inject the resin, and
- wherein the predetermined termination condition is that an injection pressure in the injection operation exceeds a specified allowable injection pressure.
13 more elements
Dependencies are inferred from the claim text.