On the basis of the working principle of double eccentricity mechanism the movement equation of seaming roller,when the guide rod was on different starting positions,was derived.

• 依据双偏心机构的工作原理,推导了导向杆在不同起始位时卷封滚轮的运动方程,总结了封罐机构参数的设计思路,为封罐机的设计提供了理论依据。