PREFORM UNLOADING MECHANISM, PREFORM TRANSFERRING MECHANISM OF INJECTION STRETCHING BLOW MOLDER, AND TRANSFERRING METHOD

摘要

PROBLEM TO BE SOLVED: To contrive to save a space by a method wherein the waste of a conveying space at the conveyance of preforms is eliminated, molding efficiency in improved, and the installation area of a device is held down as small as possible. ;SOLUTION: Preforms 24, a plurality of which are injection-molded over the direction B normal to the conveying direction A of the preform 24 and simultaneously a plurality of rows of which are injection-molded over the conveying direction A of the preform in an injection molding station, are simultaneously unloaded with an unloading mechanism 84 in their upright states. In this unloading mechanism 84, the pitch between the ranks of the preforms 24 is narrowed by means of a rank pitch conversion mechanism 94 and, at the same time, the interval between the preforms in the respective ranks of the preforms is narrowed by means of a column pitch coversion mechanism 96. The preforms 24 taken out with the unloading mechanism 84 is turned by 90 horizontally so as toconvert the directions of the ranks and of the columns. The preforms 24, the directions of the ranks and of the columns of which are converted, are rotated with a rotational delivering mechanism 88 into a state being turned upside down so as to be delivered to a first conveying passage 54.;COPYRIGHT: (C)1999,JPO