Patent ID: 7993127

Claim:
A blow molding device for forming a blow molded article provided with a built-in part in an interior thereof, comprising: a blow mold adapted to form an outer wall of the blow molded article; and a built-in part holding unit adapted to hold the built-in part in the blow molded article, which is provided in an opening and closing section of the blow mold, said blow mold including two mold members split along a parting line thereof, said two mold members defining a cavity adapted to form said outer wall of the blow molded article while holding a parison therewith, said built-in part holding unit including 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 opened blow mold, whereas when said blow mold is closed, said built-in part is positioned in an interior of said parison, and after holding said parison with said blow mold, said holding rod is removed from said blow mold each of said two mold members of said blow mold including a slide core that is provided in such a position as to hold said built-in part and said parison so as to freely advance and retreat relative to said cavity when said blow mold is closed, a drive control pin provided in each of mating faces of said mold members, and a linking member adapted to link said drive control pin and said slide core with each other such that said slide core is driven with said drive control pin, and said slide core being arranged such that when said blow mold is closed, said slide core retreats from an interior of said cavity to said molding face defining said cavity at the same speed as the closing speed of said blow mold.