Correction method for a control apparatus controlling an injection molding machine
AssigneeNissei Plastic Industrial Co., Ltd.
InventorsKazuo Usui, Susumu Morozumi
Life of this patent
Estimating the term…
Abstract
In a correction method for correcting a pressure detection value output from a pressure detector used in a control apparatus which controls an injection molding machine, the screw of the injection molding machine is rotated by one turn in a period in which molding operation is not performed, and a middle value between the minimum value and the maximum value of a pressure detection value output from the pressure detector during the rotation is obtained. The screw is rotated further and is stopped when the pressure detection value becomes equal to the middle value. The pressure detection value output from the pressure detector after stoppage of the screw undergoes correction.
Claims7
A correction method for a control apparatus controlling an injection molding machine, which method corrects a pressure detection value output from a pressure detector, the method comprising the steps of:
- rotating the screw by one turn in a period in which molding operation is not performed;
- obtaining a middle value between the minimum value and the maximum value of a pressure detection value output from the pressure detector during the one-turn rotation;
- rotating the screw further and stopping the screw when the pressure detection value output from the pressure detector becomes equal to the middle value;
- and
- correcting the pressure detection value output from the pressure detector after stoppage of the screw.
Dependencies are inferred from the claim text.