Heated component e.g. injector nozzle, thermoregulation system for injecting molding apparatus, has electronic control unit to control fail-safe electric supply of resistors according to signals coming from thermocouples

摘要

The system has heating resistors (R1, R2) provided at a same zone of a heated component e.g. injector nozzle, and thermocouples (TC1, TC2) operatively associated with the respective resistors. The resistors and thermocouples are connected to an electronic control unit (C), independently. The electronic control unit comprising thermoregulators, controls fail-safe electric supply of the resistors according to signals coming from the thermocouples. The control unit interrupts the electric supply in the event of a short circuit.