INJECTION UNIT

摘要

The invention relates broadly to injection molding machines and more particularly to a novel combination of a barrel and carriage assembly for us e in an injection unit of an injection molding machine. Barrels are conventionally mounted at an end in a carriage of an injection unit. Axial carriage force is directed along the entire length of the barrel which requires a thick barrel wall to withstand the axial carriage force. In addition, installation of the barrel in a conventional carriage is difficult and time consuming, and prone to alignment errors. A barrel (30) and carriag e assembly (34) is disclosed having a first complimentary couplers and a secon d complimentary couplers. The first couplers (46) interlock to secure the barr el intermediate the ends of the barrel to a carriage (34). The second couplers retain an end of the barrel in the carriage preventing rotation of the barre l during operation