"注塑机控制系统中PLC的应用及改造研究"

Injection molding is a complex process that requires precise control in order to produce high-quality plastic products. The control system of the injection molding machine plays a crucial role in determining the quality of the final product. Traditional control methods, such as using relays and contact switches, have limitations in terms of maintenance, reliability, and accuracy. With the advancement of electronic technology, it has become necessary to upgrade the control system of injection molding machines. This undergraduate thesis explores the application of PLC (Programmable Logic Controller) in the control system of injection molding machines. The research aims to improve the overall efficiency, precision, and reliability of the injection molding process. The study analyzes the structure of injection molding machines and introduces the programming and usage methods of the Siemens S7-200 PLC. By utilizing configuration software for simulation, a complete injection molding machine system controlled by PLC is designed. The benefits of using PLC in the control system of injection molding machines are numerous. PLCs offer higher reliability, faster response times, and greater precision compared to traditional control methods. The system designed in this research project aims to achieve low energy consumption, reduced noise levels, easy control of clamping force, smooth operation, safety, reliability, and ease of maintenance. In conclusion, the application of PLC in the control system of injection molding machines represents a significant advancement in the field of plastic manufacturing. By upgrading to PLC-based control systems, manufacturers can improve the quality, efficiency, and reliability of their production processes. This research contributes to the continued development and optimization of injection molding technologies, ensuring the production of high-quality plastic products for various industries.