Research On Mould Structure Optimization Design Of The Hydraulic Biomass Molding Machine

Biomass energy has reserves, wide distribution, renewable and other advantages, could solve the problem of energy nervous, environment pollution and climate change.It development bottleneck is raw material, high energy consumption, mould wear big and high production costs. Biomass curing technology is one of the technology effectively resolve the above problems.Raw material is compressed loose into the rules of products by biomass curing technology. The study divided into forming mechanism, molding technology and machine’s studies, in which the key technology is curing machine mould structure. Mould structure not only influence forming quality of the product, but also affect production process of energy consumption and mould wear. In mould structure optimization, can effectively increase the products quality, reduce the wear and the energy consumption, reduce the cost of production.This paper using hydraulic machine, with elastic-plastic mechanics and rheological for theory, research mechanism of biomass compression molding and mold construction on the effect of the forming process. Establish the model of mould, and analyzes the stress of the mould, draw the most important parameters of mold construction is main length-diameter ratio, two end diameter ratio and cone angle.Set a model in ANSYS software, analysis the displacement of the biomass materials, stress-strain distribution, equivalent stress field of product, mould equivalent stress field and friction distribution. The simulation results indicated that maximum equivalent stress appears in main entrance of mould cone-shaped area. The biggest factor of mold the maximum equivalent stress is mould main diameter and cone angle.In finite element simulation, set the mold main length unchanged, by changing the diameter of main change the numerical of main length-diameter ratio and two end diameter ratio. Get the curve of the maximum equivalent stress and the die mould parameters. Fitting curve of the simulate in the ansys, establishing optimal model, draw the optimal value of mold parameters. This Research can reduce the maximum equivalent stress of the mould and wear, improve the quality of biomass products, Provide theoretical support for the selection, design and improvement of biomass briquetting molding machine.