Design and Application of PLC Control System in Two-stage Vacuum Extruder

Nowadays，two-stage vacuum extruder has been widely used in brick and tile industry.Main direction in the future of extruder research is to realize extrusion production automation，save resources，improve extrusion quality.Based on analysis of structure and actual work process of extruder，automation control scheme of whole working process of extruder was determined，and PLC and sensor were used to realize monitoring of moisture content，material level，degree of vacuum，temperature and pressure.Degree of automation of extrusion machine was improved.At the same time，the objective which to increase production，extend equipment life，save resources，and improve the production efficiency and product quality was realized.