CYLINDRICAL MOLDING, AND PRODUCTION METHOD FOR THIS CYLINDRICAL MOLDING AND MOLDING DEVICE USED IN THIS PRODUCTION METHOD

摘要

Such a molding device is used as comprising: a core die having an outer peripheral surface almost equal in a vertical−section uneven shape to a receiving−port inner surface, and having a maximum outer diameter almost equal to the inner diameter of a resin pipe; an outer die capable of being freely assembled so as to surround from the outside the portion to be worked of the resin pipe, consisting of a plurality of split die elements capable of being disassembled so as to be able to take out the receiving port portion when being separated, and having a molded surface in the shape of the outer surface of the receiving port; and a core−die eccentric−revolution mechanism for allowing the core die, while being surrounded by the outer die, to revolve around the center axis of the receiving port to be obtained with the center axis of the core die kept parallel and eccentric with respect to the center axis of a molding portion to be obtained to thereby compress the portion to be worked in the outer die direction by the core die.