Plastic tube corrugator and mold blocks

摘要

A machine for making plastic tubing including a plurality of separate carriages (50) for carrying mold blocks (30) about a continuous path. First and second wheel (120) pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel (122) is disposed between the wheels of each pair and rides on guide tracks (66) associated with and facing oppositely to the first and second tracks respectively through the molding section. <IMAGE>