METHOD AND DIE FOR MOLDING PIPE FITTED WITH FLANGE

摘要

PURPOSE:To provide a method and a die for molding a pipe fitted with a flange which is sufficient in strength of the product without generating a large amount of burr. CONSTITUTION:A parison 2 is held along the cavity 1 of a bottom force 3 in a state wherein a slide core 4 is moved to the outside. Then a top force 5 is closed and the air of the inside of the cavity 1 is exhausted. Thereafter gas is blown into the parison 2 and then the slide core 4 is moved to the inside and thereby a flange 6 is formed to a pipe.