The Design And Research Of Key Parts Of Biomass Straight Roller And Flat Die Molding Machine

Energy shortage and environmental pollution have become the difficult problemsof hindering the development of the current society. In order to alleviate thecontradiction between supply and demand of energy, searching for renewable energy isimminent. Compared with other energy, biomass energy is a kind of renewable andclean energy. Biomass energy has an advantage that biomass resources are abundantand have a huge potential utilization, which make it stand out and get the world moreand more attention. However, research on biomass molding technology in China is stillin its infancy, it still needs further development and improvement.Based on low energy consumption, high yield rate as a starting point, the designaims to develop a biomass straight-roller and flat-die molding machine. The mainresearch contents and achievements are as follows:To solve that integral roller and flat die wear seriously, is short of life, and is notconvenient to maintain for the traditional biomass molding machine, the design willimprove integral roller and flat die into combined roller and flat die. Practice shows thatthe improved combined roller and flat die is convenient maintenance and reduce theproduction cost.The conditions of rollers grabbing materials is established, that friction coefficientof material and flat die is greater than of material and roller. The function relations areestablished between productivity, spindle power, energy consumption per ton. Theinfluence rules of friction coefficient of material and roller and flat-die are simulated.The axial compressions on materials in the die sleeve is established. Simulating thelaw of the influence of Poisson’s ratio of materials, friction coefficient, length-diameterratio of the die sleeve. The results show that the axial compressions is exponentialgrowth along with the increase of friction coefficient and length-diameter ratio of thedie sleeve. Poisson’s ratio of materials and friction coefficient must be considered forthe design of length-diameter ratio of the die sleeve.The causes of die sleeve plastic deformation are analyzed. The model of the stressof die sleeve is established. Finite element analysis for the different angle of the diesleeve, show that die sleeve’s displacement and stress decreases with the increasing ofangle of the die sleeve. Statics analysis and modal analysis of spindle component verified the stiffness and strength conditions, avoid resonance.In order to satisfy the serialization demand of flat die molding machine, thebiomass flat die molding machine’s parameter-driven modeling system is development.And component’s database is established. The test results show that the system canrealize the rapid design of flat die, die sleeve, roller, shaft, which reduces theunnecessary repetitive work and improves the design efficiency greatly.