Mold clamping device and injection molding machine
AssigneeThe Japan Steel Works, Ltd.
InventorSouma MITANI
Life of this patent
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Abstract
A mold clamping device includes two mold platens; a plurality of ball screw mechanisms connecting the mold platens to each other; a plurality of servo motors respectively configured to drive the ball screw mechanisms; and a control device. The control device is configured to independently control the servo motors based on a plurality of axial force setting values respectively set for the plurality of ball screw mechanisms, and the plurality of axial force setting values are set in the control device based on a constraint condition defining an allowable range within which the axial force setting values are settable.
Claims14
A mold clamping device comprising:
- two mold platens;
- a plurality of ball screw mechanisms connecting the mold platens to each other;
- a plurality of servo motors respectively provided on the plurality of ball screw mechanisms and configured to respectively drive the ball screw mechanisms;
- and
- a control device configured to independently control the servo motors based on a plurality of axial force setting values respectively set for the plurality of ball screw mechanisms, the plurality of axial force setting values being set in the control device based on a constraint condition defining an allowable range within which the axial force setting values are settable.
An injection molding machine comprising:
- an injection device configured to inject an injected material,
- a mold clamping device configured to clamp a mold, the mold clamping device comprising:
- two mold platens;
- a plurality of ball screw mechanisms connecting the mold platens to each other;
- and
- a plurality of servo motors respectively provided on the plurality of ball screw mechanisms and configured to respectively drive the ball screw mechanisms;
- and
- a control device configured to independently control the servo motors based on a plurality of axial force setting values respectively set for the plurality of ball screw mechanisms, the plurality of axial force setting values being set in the control device based on a constraint condition defining an allowable range within which the axial force setting values are settable.
Dependencies are inferred from the claim text.