Method for clamping end of tubular workpiece for high pressure moulding with the tube pushed onto a conical support and secured by a split outer clamping ring

摘要

A method for securely clamping one or both ends of a tubular workpiece (1) prior to high speed high pressure moulding via internal pressure, has each end pushed axially onto a conical support ring (3) and clamped by a split outer ring (5). The outer ring bends the end (2) of the workpiece around a profile (4) to ensure a secure grip. The conical ring can include a hydraulic piston (6) to stretch the workpiece.