| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a temperature control device for an injection molding machine capable of promptly responding to disturbance characteristic change caused by condition change even when a molding condition and a purge condition are changed during continuous operation and of preventing temperature fluctuation. <P>SOLUTION: A temperature deviation ET obtained by subtracting a detection temperature PV from a set temperature SV is input to a PID controller 102. The PID controller 102 calculates a first operation amount PID and outputs the first operation amount PID to an adder 112. A second operation amount MV is an amount obtained by adding the first operation amount PID to a feedforward amount FF. A heater 106 is controlled by the second operation amount MV. The detection temperature PV is an actual temperature of an injection cylinder 108. The temperature of the injection cylinder 108 is detected by a temperature sensor, and negative feedback of the temperature to input of the PID controller 102 as the detection temperature PV is performed. Thus, feedback control is performed, and the injection cylinder 108 is heated to the set temperature SV by the heater 106. <P>COPYRIGHT: (C)2013,JPO&INPIT |
