Development Of Twin-screw Extruder For Carbon Stick Of Dry Battery And Study On Twin-screw Geometry Modeling

Based on rheological properties of the material-carbon mixes and the principle of extrusion moulding, the twin-screw extruder for carbon stick of dry battery is successfully developed for the first time in our country. Using the rheological theories, we analyze the flow of carbon mixes in the head and realize the scientific design of head channel. At the same time, the comprehensive functions of the extruder unit have been tested and analyzed in accordance with the special demand of extrusion technology for carbon mixes. By means of the comparison between the old and new moulding technology of the green carbon bodies, the feasibility and advancement of the technology using the conical twin-screw extruder unit to produce carbon stick of dry battery are verified.In this paper, on the basis of thorough research into the geometry of twin-screw, the program is developed for twin-screw's 3D solid modeling extension of conical twin-screw having ladder-shaped channels by using ANSYS software, regarded the practice of processing and manufacturing. Meanwhile, some processings are done to the twin-screw's 3D modeling figure.The practice verifies: the new program has good practicability and operability, so it can be used to inspect the intermeshing conditions of twin-screw and is of much help to geometry modeling and reasonable design of conical twin-screw and counter-rotating parallel twin-screw.