Patent ID: 6082992
Filing Date: 2000-07-04
Classification: B29C

Abstract:
An apparatus for injection molding a bent pipe, comprising:an injection mold adapted to define a mold cavity which includes a bend part with an arcuate centerline curved about an axis of curvature and a connecting part connected to one end of said bent part, wherein said mold includes a bend core, wherein said bend core includes a pivotal member adapted to be pivotal along said arcuate centerline of said bend part and a cylindrical core adapted to be axially displaceable within said connecting part; anda displacement device for moving said pivotal member, wherein said displacement device includes at least two bars which are longitudinally displaceable in said connecting part, wherein said bars are spaced apart from each other in a plane containing said arcuate centerline, wherein said bars have respective mounting points at which said bars are pivotally mounted to said pivotal member such that said mounting points can be guided in a part of the pipe formed in said bend part along respective circular paths about said axis of curvature and can be axially guided within a part of the pipe formed at said connecting part.