As an important tool in plastic molding technology, injection molds are of great significance in improving the production efficiency and quality of plastic products. With the continuous development of technology, the design and manufacturing technology of injection molds are also constantly improving. In the future, with the continuous emergence of new materials, processes, and technologies, injection molds will play a greater role in more fields. Meanwhile, with the increasing awareness of environmental protection, the environmental performance and sustainable development of injection molds will also become an important direction for research and development.

Injection molds can be classified based on different molding characteristics and processes. According to the molding characteristics, injection molds can be divided into two types: thermosetting plastic molds and thermoplastic plastic molds. According to the molding process, injection molds can be divided into transfer molds, blow molds, casting molds, hot forming molds, hot pressing molds (compression molds), and injection molds. Among them, injection molds can be divided into two types based on the different pouring systems: cold runner molds and hot runner molds.