Method of controlling injection molding machine
AssigneeSumitomo Heavy Industries, Ltd.
InventorsTakeshi Konno, Mitsuaki Amano, Hiroshi Sato
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Abstract
An injection pressure of an injection molding machine is controlled by a movement of a screw. The injection pressure is detected when the screw is moved forward and rearward in an injection process. A rising injection pressure ΔP is predicted in a case where the screw is stopped at a previously set deceleration of the screw from the time of detection of the injection pressure. The predicted rising injection pressure ΔP and a previously set pressure P are compared, and the screw is decelerated at a previously set deceleration based on the comparison result.
Claims17
A control method of an injection machine to control an injection pressure by a movement of a screw, comprising:
- detecting the injection pressure generated when said screw moves forward in an injection process;
- predicting a rising injection pressure ΔP when decelerating the screw at a previously set deceleration of the screw from a time of detection of the injection pressure;
- comparing the predicted rising injection pressure ΔP and a previously set pressure P with each other;
- and
- decelerating said screw at a previously set deceleration based on a result of the comparison.
Dependencies are inferred from the claim text.