Research On The Force Stress State Of ?65 Twin-Screw Extruder Screw Eiement

With the mature and development of China's twin-screw extruder manufacturing enterprises,their twin-screw extruders are used widely in engineering plastics,rubber,food,paper and other industries,so it is particularly important to increase the production of twin-screw extruders and extend their service life.In this paper,the force state of the screw element of ?65 twin screw extruder is studied and compared with that of screw element of cp75 twin screw extruder,which provides the necessary reference data for improving the twin-screw extruder output and performance.In this paper,Polyflow software was used to simulate the force analysis of the screw element.The flow field characteristics and stress state of the screw element and the meshing disk element of the twin-screw extruder were calculated.The parameters such as the rotation speed,lead and material viscosity of the screw element were studied.On the stress state of the screw,the effect of the staggered angle and the thickness on the force state of the intermeshing disc was studied.The change trend of radial force,axial force and torque during the rotation and the phase of the screw element are reflected by the graphs and charts.The deformation and stress concentration area of the screw element under different conditions are clearly seen by using the cloud graph.In this paper,though the force state of ?65 and ?75 screw elements compared,the change law of the force state of the thread elements with different diameters is obtained.It is hoped that the more reasonable geometric parameters and process parameters can be obtained under the premise of ensuring high yield and safety,so as to provide some data support for the optimization design of twin-screw extruder.