Conical torpedo for a plastics injection molding machine nozzle, especially for molding PVC, has an annular collar whose flow bores to the annular melt flow gap have hopper-like inlets

摘要

The conical torpedo(1) is located in the conically narrowing melt channel of the nozzle. An annular melt flow gap is formed between the torpedo and the conical nozzle and an annular support collar(2) at the foot of the torpedo has bores(3) leading into the annular gap. The bores have hopper like entries on the injection screw side and a further conical flow guide(5) is centrally located inside the circle of bores facing the screw.