Device for controlling temperature of a nozzle

摘要

A device for controlling temperature of an injection molding machine nozzle to maintain uniform temperature all over the nozzle and to prevent stringiness, drooling and so on of melted resin, which provides a temperature controller for controlling temperature at the front portion and the rear portion of the nozzle by controlling the electric power supplied to the front heater and the rear heater with ON-OFF operation of a relay and a voltage regulator for controlling voltage applied to one of the front heater or the rear heater by an operational amplifier detecting differences of temperature at the front portion and the rear portion of the nozzle.