Injection molding machine for performing foam molding and method for controlling injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorsAkihiro NAITO, Takuya YUFU
Life of this patent
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Abstract
An injection molding machine includes a heating cylinder provided with a gas inlet, a screw, a gas cylinder, a pressure reducing valve configured to reduce a primary pressure of a gas from the gas cylinder to a secondary pressure, a gas supply portion configured to supply the gas at the secondary pressure to the gas inlet, a secondary pressure detection device configured to detect the secondary pressure, and a controller. The controller is configured to detect an abnormality by comparing a set pressure set in advance in the injection molding machine with the secondary pressure.
Claims30
An injection molding machine comprising:
- a heating cylinder having a gas inlet;
- a screw drivable in the heating cylinder;
- a gas supply device configured to supply a gas to the gas inlet;
- and
- a controller,
- wherein the gas supply device comprises:
- a gas supply source configured to supply a gas;
- a pressure adjustment device configured to adjust a primary pressure of a gas from the gas supply source to a secondary pressure;
- and
- a secondary pressure detection device configured to detect the secondary pressure,
- wherein the gas supply device is configured to supply the gas at the secondary pressure to the gas inlet, and
- wherein the controller is configured to detect an abnormality by comparing a set pressure with the secondary pressure.
A method for controlling an injection molding machine,
- the injection molding machine including:
- a heating cylinder having a gas inlet;
- a screw drivable in the heating cylinder;
- and
- a gas supply device configured to supply a gas to the gas inlet,
- the gas supply device including:
- a gas supply source configured to supply a gas;
- a pressure adjustment device configured to adjust a primary pressure of a gas from the gas supply source to a secondary pressure;
- and
- a secondary pressure detection device configured to detect the secondary pressure,
- the gas supply device being configured to supply the gas at the secondary pressure to the gas inlet,
- the method comprising:
- detecting an abnormality by comparing a set pressure with the secondary pressure.
Dependencies are inferred from the claim text.