Patent ID: 7153127
Filing Date: 2006-12-26
Classification: B29C,B29L

Abstract:
1. A mold system for blow molding hollow plastic containers, which includes: an extruder for providing a hollow tube of plastic material having a longitudinal axis, a plurality of at least three mold segments, at least two of which are movable against a third mold segment, in directions perpendicular to said axis, between a closed position in which said mold segments form a hollow mold cavity in which the tube is captured and an open position spaced from said axis, and a blow pin on one of said mold segments to pierce the tube in the closed position of said mold segments, wherein at least one of said mold segments comprises a mold core movably mounted on a second of said mold segments, and wherein said system further includes a means for moving said at least one mold core between an extended position and a retracted position with respect to said second mold segment, said means comprising a pair of cylinders on said second mold segment on opposite sides of said mold core, and a bridge plate extending between said cylinders, said mold core being operatively coupled to said bridge plate on said second mold segment.