METHOD FOR OPERATING INJECTION MOLDING MACHINE IN INJECTION MOLDING EQUIPMENT

PROBLEM TO BE SOLVED: To prevent the defective take off of a molding by preventing the degradation of a resin in a hot runner due to the waiting of an injection molding machine when the trouble of a post-process occurs and to increase a material yield by reducing the amount of discarded moldings by extending a waiting time. SOLUTION: In a standby mode for making the injection molding machine standby owing to the trouble of an apparatus in the post-process of an injection molding process, a waiting process and a trial run process are carried out alternately at least one time, a temperature lowering action is carried out in the initial stage of the waiting process to lower the temperature of the hot runner from a molding temperature to a waiting temperature to prevent the degradation of the resin, and a temperature raising action is carried out in the latter stage of the waiting process to raise the temperature of the hot runner from the waiting temperature to the molding temperature. COPYRIGHT: (C)2007,JPO&INPIT