STRETCHING ROD LIFT DEVICE OF PET BOTTLE MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide the stretching rod lift device of a PET bottle molding machine capable of simply setting the molding condition of the preform stretching rod of the stretching rod lift device without performing positional adjustment or the replacement of a part. SOLUTION: In the stretching rod lift device of the PET bottle molding machine constituted so as to stretch the preform in a mold by the preform stretching rod to blow the stretched preform into a predetermined shape, the preform stretching rod is driven by an electrically controllable motor. As the electrically controllable motor, a servomotor or a stepping motor can be used. The PET bottle molding machine is preferably a rotary type one. COPYRIGHT: (C)2006,JPO&NCIPI