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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。
The main screw thread has been improved. The improvement measure is to make several narrow grooves at the end of the secondary screw thread so that the rubber material in the viscous flow state flows smoothly to the extruding section for two purposes. One is to solve the problem The main screw thread of the second screw material problems, the second is to enhance shear mixing effect, shortening the length of the screw. At the same time, the parameters of the improved screw were analyzed, and the length of the shear mixing section was deduced, which has certain reference value for the actual engineering design and application.