机械凸轮带动的加热器，在不同速度下会造成加热器加热烟包时间的不同，从而影响烟包透明纸的包装质量。为了使加热器在不同速度下对烟包透明纸的加热时间保持一致，利用步进电动机和机械凸轮联合控制加热器的运动，从而实现了不同速度下保持恒定的加热时间，以提高烟包透明纸包装质量的稳定。

Heater driven by mechanical cam can cause different heating time with different machine velocity, which will affect the quality of cigarette packets film. Step motor and mechanical cam combined control was applied to control the movement of heater to keep heating time steady under different machine velocity, so as to improve the quality stability of transparent cigarette packets film.