APPARATUS FOR MAKING FLEXIBLE TUBING WITH ANNULAR CORRUGATIONS

摘要

An apparatus is disclosed that is used for making flexible tubing with annular corrugations from a sleeve of uncured rubber. The sleeve is positioned on a mandrel and radially expanded by fluid pressure into an external forming member that includes a plurality of annular discs loosely connected to a support and positioned in approximate axial alignment. A disc aligning tube is located around an axial length portion of the external forming member. While the sleeve is radially expanded, the aligning tube is slid in an axial direction to engage the discs and to urge any misaligned discs into accurate axial alignment.