Analysis And Research On The Moulding Region Of Extruding For Crop Straw

This text research the construction characteristic, compress characteristic and flow regulation of corn straw,and measure the moulding characteristic.The paper simulate the condition of movement at moulding part.At first the paper discuss the significance of compressed maize stalk fodder about using corn straw and some problems at stockbreeding,thought that although there are a lot of corn straw in china, it have some problems,for example unceasing fire insteading feeding it for cow and sheep.it is important of thing for protect environment and promote development of agriculture to make it to compressed maize stalk fodder.It can lighten compress of lack of foodtuff in country to feed the dumb things compressed maize stalk fodder. Pressure of mechanism can make corn straw to nubbly that is high-density and shaping,it is popular for people.The second part of paper analysis construction characteristic and component of corn straw and compress characteristic,do some experimentation about physics and re-disposal of corn straw.The third part sum up the condition of movement and regulaor of corn straw.the corn straw have friction between corn straws,between corn straw and Shelly, between corn straws and pusher, and the temperature rise rapidly in the machine,the corn straws begin melt when the temperature reach a degree.after high-temperature and high-press,straws became stalk fodder.The paper make a conclusion that with the increase of compress speed and different element of water content,smash-granularity, body-spiral by single factor experiments,pressure and density will increase; with increase of element of water content,the biggest pressure will ascend then descend.Fifths paper introduce computer simulation and computer animation, and use UG to make model of mechanism organization.I use UG to observe the situation of the whole mechanism movement, find dynamics analysis to test the rationality of mechanism.The UG can make chart about speed change of Press round and annulus,change of power,and movement of straw.at last,the paper realize excellent turning of design.Finally get a conclusion:(1)Straw comminuted, are formed compressed maize stalk fodder un-added any glutinous by the helix squeezes,, those can be advantage to re-use for straw, and be foundation to developmeng to mechanism.(2) The paper analysis the process of work that Straw- mechanism press straw, and get conclusion that there are three phase: Lax stage; The density increases the stage quickly; the stage of slip to move.(3) With the increase of compress speed and different element of water content, smash-granularity, body-spiral by single factor experiments,pressure and density will increase; with increase of element of water content,the biggest pressure will ascend then descend.(4) The paper said the flimsy part in the work by anlysis power that Press round and Mold piece beared, and describe the condition of material,supply the theory of designing mold piece.(5) Imitate the true system is powerful, simulate the dynamic work situation of mechanism.this is practicability and supply the theory of designing mechanism of straw-compressed.