The injection process of animal pattern injection molding machine plastic parts mainly includes four stages: feeding, plasticization, injection filling, and demolding. These four stages are a complete continuous process that directly affects the quality of plastic product molding. Excessive or insufficient addition during the feeding process can affect whether good plastic parts can be obtained in the end. Therefore, it is necessary to determine the material according to the needs to ensure stable operation and uniform plastic plasticization; After adding materials, it is necessary to heat the plastic in the barrel to transform it from a solid state to a viscous flow state with good plasticity, which is the plasticization process.