A parison extrusion head includes a cylindrical body, a programing rod in the body, a die pin on the end of the rod, and a die ring mounted on the end of the body by a clamp assembly having a pair of clamp arms which are connected to the body by hinges and are rotated between a closed position holding...http://www.google.es/patents/US5776519?utm_source=gb-gplus-sharePatente US5776519 - Parison extrusion head with quick change die ring clamp assembly
Parison extrusion head with quick change die ring clamp assembly
