Based on the analysis on the structure characteristics of the fan front shell and the method of thread demoulding, a chain transmission mechanism was designed to realize auto thread demoulding.

• 在分析风扇前壳体塑件结构及螺纹脱模方法的基础上,阐述了采用链传动机构实现螺纹型环机动旋转脱模的设计过程及其工作原理。