Injection blow molding system with enhanced parison mold configuration

摘要

An injection blow molding (IBM) system and method for forming a plurality of parisons and molded articles. The IBM system includes an injection station having upper and lower die sets and a plurality of upper and lower mold half blocks each attached to a respective die set. Each of the upper mold half blocks has a corresponding lower mold half block with which it cooperatively defines one or more cavities for forming the exterior shape of the body of one or more of the parisons. The individual, independent attachment of the mold half blocks to the die sets allows easy individual replacement of faulty or worn mold blocks. Further, such an independent attachment configuration also permits the mold half blocks of each die set to be spaced from one another, so as to reduce thermal expansion problems and ease dimensional tolerances required for the width of the mold half blocks.

主权项

1. A split parison mold assembly configured for connection to upper and lower die sets of an injection blow molding system, said split parison mold assembly comprising:
a plurality of pairs of upper and lower multi-cavity parison mold half blocks, wherein each pair of said mold half blocks is configured to cooperatively define a plurality of parison forming cavities, wherein at least two adjacent lower multi-cavity mold half blocks are spaced apart from one another, wherein at least two adjacent upper multi-cavity mold half blocks are spaced apart from one another.