Method for controlling motor-driven injection molding machine

摘要

A method for controlling a motor-driven injection molding machine in which heat generation of a drive section including a drive motor is monitored, and when the drive section enters an overload state, the drive motor is stopped. In the method, during molding, heat generation value (overload factor) of the drive motor is estimated from load current flowing through the drive motor. When the estimated heat generation value (overload factor) reaches a preset stopping point or when a thermostat attached to the drive section outputs an overload detection signal indicating an overload state, the drive motor is stopped.