Patent ID: 6247916
Filing Date: 2001-06-19
Classification: B29B,B29C,B29K

Abstract:
An injection stretch blow molding apparatus, comprising:a preform molding station for injection molding preforms;a blow molding station for stretch blow molding the preforms into containers; anda transfer station for transferring the preforms from the preform molding station to the blow molding station,wherein the preform molding station comprises an injection molding section for simultaneously injection molding a first number N (N.gtoreq.2) of the preforms at a first pitch,wherein the blow molding station comprises:a circulatory carrier for intermittently circulatorily carrying the preforms along a carrying path at a second pitch larger than the first pitch, the preforms being transferred from the preform molding station through the transfer station;a heating section for heating the preforms being transferred along the carrying path; anda blow molding section for simultaneously blow molding n (1.ltoreq.n<N) of the containers from a second number n of the preforms,and wherein the transfer station comprises:a receiving mechanism for receiving the preforms from the preform molding station;an inverting mechanism for inverting the preforms; anda pitch changing mechanism for changing an array pitch of the preforms from the first pitch to the second pitch.