MODELING THE TEMPERATURE CONTROL PROCESS FOR AN AUTOMATIC INJECTION MOLDING MACHINE

Abstract

This study presents the development of a functional block diagram of a temperature control system for an injection molding machine designed for manufacturing balls from a mixture of polyamide 6 with 30% glass fiber (PA6 GF30). The objective of the research was to create a simulation model that ensures precise temperature regulation during the molding process, taking into account the specific properties of PA6 GF30 materials, such as hygroscopicity and thermal characteristics. The model, developed in the MATLAB software package for numerical analysis, employs a PI controller to achieve stable temperature regulation. Parameter optimization was performed to ensure high-quality ball molding, resulting in temperature stabilization at 180–182°C with an initial drop to 100°C, which corresponds to real-world process conditions. The obtained results confirm the system's suitability for practical use and its potential for further improvement.