Electrically heated rotation moulding mould - has screened electric heating conductors implanted evenly around outside of mould in grooves in wall giving direct heating by conduction

摘要

A rotation moulding machine has arms mounted to rotate on a frame about an horizontal axis. The arms can receive and drive in rotation one or more moulds about axes orthogonal to the first. They also have electric circuits and slip-ring connections to the moulds. The moulds have screened electric heating conductors (6) implanted in their periphery and spaced all around their surface in direct contact with their wall for heating principally by conduction.