Modeling of the temperature control system of the plastification cylinder of injection molding machine

Abstract

At present the development of industry of plastic products tends to grow up the quality of products obtained by this method and increase productivity. The common denominator on quality, productivity and cost efficiency in producing plastic objects, it is thermal process that must ensure the material plastification in cylinder of plastification of machine for injection of the plastical materials. In this paper is elaborated a mathematical model describing the thermal process heating plasticizing cylinder for injection molding machine with consideration of thermal influence between of heating zones and cyclic variation of material speed in the cylinder. On the basis of elaborated mathematical model were simulated transient processes at start and in working regime of the machine with different types of regulators in the temperature control system in each thermal zone. Was made a comparison between the quality of transient process with regulators P, PI, PID granted Ziegler-Nichols method and the results obtained with the fuzzy controller.Profound study of transient processes in Simulink Matlab allowed optimize the regulators for temperature control system for each heating zone. Implementation in practice of a system of adjusting and control of plastic injection machine was in the company The electro-SV Implementing of this system is based on a universal controller of at the company.