Patent ID: 8828300
Filing Date: 2014-09-09
Classification: B29C,B29L,F16D

Abstract:
1. A die for molding, the die being used in order to manufacture boot for constant-velocity universal joint (hereinafter being abbreviated to as“CVJ boot”) by injection molding, the CVJ boot comprising: a minor-diameter cylindrical portion having a given diameter; a major-diameter cylindrical portion having a diameter that is larger than the diameter of the minor-diameter cylindrical portion, and being disposed to separate away from the minor-diameter cylindrical portion as well as to be coaxially with the minor-diameter cylindrical portion; and a bellows portion having a configuration of circular truncated cone substantially, and connecting the minor-diameter cylindrical portion with the major-diameter cylindrical portion integrally, and the die comprising: an outer mold having a mold face for molding an outer peripheral surface of the CVJ boot; and a core mold having a mold face for molding an inner peripheral surface of the CVJ boot; the core mold comprising: the divisional molds comprising: the die further comprising: