Research on the Application of New Composite Leaf Springs for Commercial Vehicles

Abstract

As the main load bearing components of commercial vehicles, leaf springs are generally heavy, and the demand for lightweighting is very urgent. Due to its unique material structure, the composite leaf springs have excellent performance and significant weight reduction effects. In this paper, the heating time during the production of composite leaf springs is shortened, and the production efficiency is greatly improved by establishing a suitable temperature-pressure-time moldflow molding window. Through the preforming process, the original multi-channel and multi-cavity molding structure is combined with the linkage demolding structure to achieve quick demolding. Finally, the molding cycle of composite leaf springs is controlled within 5min. It has achieved the same technical level as foreign countries, and effectively solved the problems of slow molding of composite leaf springs and inabilities to meet the demand of mass production in the past, which is of great significance for the large-scale industrial production and application of composite leaf springs.