With the wide application of plastic products in various industries, injection molding technology, as the main production method of plastic products, is constantly undergoing development and innovation. Among them, injection hot runner mold, as an efficient and precise mold technology, is gradually becoming the mainstream of plastic products production. This paper will introduce the innovation of injection molding hot runner mold technology and application prospects.

1) The concept and characteristics of injection molding hot runner molds

Injection hot runner mold is a use of heating system on the plastic melt heating and insulation, to achieve continuous injection molding mold technology. Compared with the traditional cold runner mold, hot runner mold has a variety of advantages, such as reducing waste, improving productivity, reducing energy consumption and improving product quality. Therefore, hot runner molds are widely used in the production of plastic products.

2) Technological innovation

1. Optimized design of hot runner system: As the core component of hot runner mold, the design of hot runner system directly affects the performance of the mold and the quality of products. In recent years, the optimized design of hot runner system has become an important direction of hot runner mold technology innovation. By optimizing the runner shape, size and layout of the hot runner system, it can improve the fluidity and uniformity of the melt, reduce the retention and degradation of the melt, and thus improve the quality and productivity of the products.

2. The application of new heating element: heating element is the key component of the hot runner system, its performance directly affects the heating effect of the hot runner system and energy consumption. In recent years, carbon fiber heating element, ceramic heating element and other new heating elements are widely used. These new heating elements have the advantages of fast heating speed, high thermal efficiency and long life, which can further improve the performance and reliability of the hot runner system.

3. Application of intelligent control technology: intelligent control technology is one of the important directions of hot runner mold technology innovation. Intelligent control technology can monitor and control the temperature, pressure, flow and other parameters of the hot runner system in real time to ensure the stable operation of the hot runner system and the quality of products. At the same time, intelligent control technology can also realize remote monitoring and fault diagnosis to improve the efficiency of mold maintenance and management. 

4. Application of multi-cavity molds: Multi-cavity molds refer to molding multiple products in one mold at the same time. Multi-cavity molds can improve production efficiency, reduce production costs, suitable for mass production. The development of hot runner mold technology provides better technical support for the application of multi-cavity molds. The hot runner technology can realize independent control of multiple cavities, ensure the consistency of melt temperature and injection volume of each cavity, and improve the quality of products and production efficiency.