PURPOSE: To automatically control various casting conditions strictly, to reduce the generation of a defective product and to quicken the countermeasure against defects by installing two sets of thermocouples whose depth from its heat receiving face varies at the vicinity of the nozzle outlet port of the title machine and detecting the temp. on the inner surface.
CONSTITUTION: A temp. sensor 7 measuring the temp. of the inner surface of a nozzle 5 is set up at the vicinity of the outlet port of a molten metal pouring nozzle 5 to a die 6 of a hot chamber die casting machine. Two sets of thermocouples 7a, 7b whose depth dimension from a heat receiving face 7' differ are inserted into this temp. sensor 7 and the temp. including the speed of a heat conduction is measured with its detection. From this detection data a nozzle clogging, the heating of the nozzle 5 and the speed and casting pressure of a plunger chip 2 are automatically controlled, good casting is continued, the generation of defective product is drastically reduced, the countermeasure against defects is quickened and the productivity is improved.
MOCHIKU YOSHIO
SHIROHIGE KATSUO
HATAMURA YOTARO