Abstract: YB618 carton overwrapper fails to empty timely at the time of machine failure, the cartons stacked in its carton elevating and film shaping device, which results in cartons with unsatisfied appearance and material waste. Instead of the stacking and elevating means, a "one carton one push" carton elevating device was designed. The new device took an independent servo motor as power source, timing belt and rack-and-pinion mechanism for power transmission. Cigarette cartons were elevated at regular interval under the cooperation of sliding guide and fixed guide. Meanwhile, a sixth side shaper was added. The results of application showed that the frequency of machine shutdown caused by carton elevating device decreased by 3 times/month, the amount of damaged cartons, the amount of defective cartons, and the proportion of cartons with appearance defects reduced by 68 carton/month, 67 carton/month, and 16 percentage points, respectively. The new device effectively promotes the efficiency of packing machines and improves the appearance quality of cigarette cartons.