目的 对GD-H1000卷烟包装机的烟支推进机构进行改进，以增强其在生产过程中的稳定性。方法 在生产过程中，烟支推进机构的故障率高，通过对该机构的运行情况进行受力分析，确定机构中的塑料滑块受交变载荷作用导致其磨损过快，磨损后对推烟机构运行稳定性的影响是导致机构故障率高的主要原因。然后将机构中塑料滑块改进为滑块轴承，以减少滑块磨损，同时增加一组滑块轴承为虚约束，以提高机构的运行稳定性，并通过增加滑块轴承的润滑系统等改进手段对机构进行结构性的改进。结果 改进后的烟支推进机构运行稳定性得到明显提高，故障停机时间从改进前的116 h/年下降到了改进后的不到7 h/年。结论 该优化设计可以有效减少推烟机构的故障停机时间，增加烟支推进机构的稳定性，进而提升设备综合运行效率。

The work aims to improve the cigarette pushing mechanism of GD-H1000 cigarette packaging machine, so as to enhance its stability during the production. The failure rate of cigarette pushing mechanism was high in the production process. Based on the force analysis of the mechanism, it was certain that the effect of fast and severe abrasion of the plastic slider in the mechanism on the operational stability of the cigarette pushing mechanism under the action of alternative load was the main cause for the high failure rate of the mechanism. Then, the plastic slider in the mechanism was improved as the slider bearing to reduce the slider abrasion. Meanwhile, one group of slider bearings were added as virtual constraint to improve the operational stability of the mechanism, and the mechanism structure was improved by means of increasing the lubrication system for the slider bearing, etc. The operational stability of the improved cigarette pushing mechanism was significantly improved and the shutdown time was reduced from 116 h/year to 7 h/year after the improvement. The optimal design can effectively reduce the shutdown time of the cigarette pushing mechanism and strengthen its stability, thus enhancing the comprehensive operating efficiency of the mechanism.