Injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorKeigo Fukuda
Life of this patent
Estimating the term…
Abstract
An injection molding machine includes: a fixed side member; and a movable side member fixed to the fixed side member, the movable side member being driven by a motor in order to perform injection molding of a molded product. The injection molding machine further includes a power feeding apparatus, one or more motors, and at least one servo amplifier. The power feeding apparatus converts a three-phase AC voltage into a DC voltage. The one or more of the motors are provided in the movable side member and drive the movable side member. The at least one servo amplifier is provided in the movable side member and drives one of the one or more of the motors by the DC voltage being supplied thereto through a DC power supply line.
Claims12
An injection molding machine comprising:
- a fixed side member;
- and
- a movable side member fixed to the fixed side member, the movable side member being driven by a motor in order to perform injection molding of a molded product,
- the movable side member including:
- a mold clamping apparatus configured to clamp a mold;
- and
- an injection apparatus configured to inject a material for the molded product into the mold,
- the injection molding machine further comprising:
- a power feeding apparatus provided inside the fixed side member and configured to convert a three-phase AC voltage into a DC voltage;
- a first motor unit mounted on the injection apparatus, the first motor unit including a first motor and a first servo amplifier;
- a second motor unit mounted on the mold clamping apparatus, the second motor unit including a second motor and a second servo amplifier;
- wherein
- the power feeding apparatus is connected to each of the first and second servo amplifiers by a DC power supply line in order to supply the DC voltage to the first and second servo amplifiers,
- the power feeding apparatus is connected to each of the first and second servo amplifiers by a communication line in order to exchange control signals with the first and second servo amplifiers, the control signals controlling operations of the injection molding machine,
- the first servo amplifier converts the DC voltage received from the power feeding apparatus into an AC voltage and supplies the AC voltage to the first motor via a first power supply line,
- the second servo amplifier converts the DC voltage received from the power feeding apparatus into an AC voltage and supplies the AC voltage to the second motor via a second power supply line,
- the first servo amplifier transmits a first control signal received from the power feeding apparatus to the first motor via a first communication line, and
- the second servo amplifier transmits a second control signal received from the power feeding apparatus to the second motor via a second communication line,
- wherein exchange of control signals between the power feeding apparatus and the first and second motors being through the first and second servo amplifiers, respectively.
Dependencies are inferred from the claim text.