Method for controlling motor - driven injection molding machine
AssigneeNissei Plastic Industrial Co., Ltd.
InventorsKazuo Usui, Shuichi Arai, Syuichi Hokino
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Abstract
A method for controlling a motor-driven injection molding machine which includes a plurality of drive motors. In the method, load current flowing through at least one drive motor serving as a drive source is detected in order to estimate heat generation value of the drive motor. When the estimated heat generation value reaches a preset stopping point, the drive motor is stopped. When the estimated heat generation value reaches a preset alarming point, which is lower than the stopping point, an alarm is issued.
Claims8
A method for controlling a motor-driven injection molding machine which includes a plurality of drive motors each serving as a drive source, comprising
- detecting load current flowing through at least one drive motor;
- estimating heat generation value of the at least one drive motor from the load current;
- stopping the drive motors when the estimated heat generation value reaches a preset stopping point;
- and
- issuing an alarm when the estimated heat generation value reaches a preset alarming point, which is lower than the stopping point.
Dependencies are inferred from the claim text.