主副螺纹型螺杆的改进与参数分析

对主副螺纹型螺杆进行了改进,改进措施是在副螺纹的末端加工出几条窄槽,使粘流状态的胶料顺利的向挤出段流动,其目的有两个,一是为了解决主副螺纹型螺杆的滞料问题,二是强化剪切混合效果,缩短螺杆长度。同时,对改进后的螺杆进行了参数分析,推导出了剪切混合段的长度,对实际工程设计及应用具有一定的参考价值。

Improvement and Parameter Analysis of the Screw With Main and Auxiliary Threads

The improvement of the screw with main and auxiliary threads has been carried out, the improvement measure is that several narrow grooves are machined at the end of the main and auxiliary threads, so that viscous flow rubbers can smoothly flow towards the extrusion segment, there are two purposes to do so, the first aim is to solve the problem of stagnating materials of main and auxiliary threads, the second purpose is to enhance the shear mixing effect and shorten the length of the screw. Simultaneously, parameter analysis of the improved screw has been carried out, and the length of the extrusion segment has been deduced, which has reference value to the actual engineering design and application.