Flash-free undercut forming on an injection molded component, by moving a slide into the material-filled cavity while the material is still soft

摘要

A molding cavity between both tool halves (2a,2b) is completely filled with fluid plastic with a slide (5) in an initially retracted position. The slide is then moved through one tool half (2a) into its forward position with the end face (5a) pushed into the still soft plastic to form an undercut without flash around the exposed edge.