GPC CONTROL OF HOT-RUNNER TEMPERATURE IN INJECTION MOLDING

摘要

Injection molding is one of the most popular polymer processing techniques in plastics industries. Hot runner has become a standard component of injection molding molds due to a number of advantages, including reduction in raw material consumption, greater production rate, and lower power consumption. Hot-runner temperature distribution plays an important role in final product quality. A multi-input-multi-output (MIMO) generalized predictive control (GPC) is developed, implemented and tested for hot-runner temperature control on a reciprocating-screw injection molding machine. Experimental results prove that GPC can control hot-runner temperature accurately.