Patent ID: 8202078

Claim:
A blow molding device for forming a blow molded article, comprising: a blow mold adapted to form an outer wall of the blow molded article; and a parison holding unit adapted to hold a lower end of a parison, wherein said blow mold includes two mold members split along a parting line thereof, said two mold members defining a cavity adapted to form the blow molded article in split faces thereof, wherein said parison holding unit is provided on a lower side of said blow mold, and including an inner holding plate adapted to be inserted in an interior of said lower end of said parison, and an outer holding plate adapted to hold an outer surface of said lower end of said parison, said outer holding plate having a recess conforming to a configuration of said inner holding plate such that said inner holding plate and said outer holding plate hold said lower end of said parison, and said outer holding plate being split into a plurality of split plates such that each of said split plates is capable of sliding to hold said lower end of said parison, wherein the blow molded article has a built-in part in an interior thereof, wherein said blow molding device has a built-in part holding unit adapted to hold the built-in part in the blow molded article, said built-in part holding unit is provided in said split faces of said blow mold, wherein a slide core is provided in an interior of said cavity so as to freely advance and retreat such that the built-in part and said parison are held with said slide core, and the outer wall of the blow molded article is formed in said cavity, and wherein said built-in part holding unit includes a holding rod adapted to hold the built-in part, said holding rod being arranged to freely advance and retreat such that when said blow mold is opened, said built-in part is held in a position facing said cavity of said blow mold, whereas when said blow mold is closed, said built-in part is positioned in an interior of said parison, and after said parison and the built-in part are held with said slide core, said holding rod is removed from said blow mold.