Design Of Vulcanization Mould Of Torque Rod Bushing Based On FEA

Rubber is a high elastic material that widely used in modern industry,most damping parts in the auto industry are made of rubber.Vulcanization is the most important process in the production of rubber,which can make the rubber meets the requirements of performance requirements.Mold is the most important tool during the rubber vulcanization process.The reasonable design of rubber vulcanization mold can improve the product quality and production efficiency.With the development of injection vulcanizing machine which gradually replaced the plate vulcanizing machine,it is necessary to change design theory in the enterprise commonly and design new type injection vulcanization mold.For the rubber bushing’s production which is the important component of commercial vehicle suspension system,Finite Element Analysis method is used in vulcanizing mold design to enhance efficiency,optimize the its structure and improve the quality of rubber bushing.The main content of this paper is as follows:1.Based on the analysis of the vulcanizing principle and rubber bushing’s vulcanization process,then the important parameters of vulcanization have been researched,and solutions of common problems about vulcanization process have been come up with,which providing theoretical basis for vulcanization mold design.2.Based on SIGMASOFT which is a professional tool fo r high polymer material simulation,in contrast with effects of product quality and process parameters(injection pressure,filling time,vulcanization temperature)exerted by different injecting gates,product injecting gates and mold runner schemes have been analyzed and optimized according results above,running system for 12-cavities injection mold has been designed and applied to rubber injection molding machines.3.According to the result of Finite Element Analysis,vulcanization mold of torque rod bushing has been designed and optimized regarding mold material,cavity design,groove for overflowing and evacuating.Radial stiffness,axial stiffness,torsion stiffness,conical stiffness and press-out force have been taken as assessment criteria of product performance.12-cavities mold will be verified after products have been tested and analyzed.