目的 解决中支双铝包小盒商标纸因模切压痕不稳定出现的烟包小盒侧边弹开翻折、烟包变形等问题。方法 设计小盒商标纸在线压痕装置，该装置包括机架、传动轴、辗送轮、压痕件、导纸轮、对压轮、压痕避让部和托纸轮，同时开展正交试验，获取压痕件半径、刃缘弧长和包装机作业速度最佳参数组合。结果 应用在线压痕装置后，小盒商标纸压痕挺度的平均绝对误差由6.0减小至1.9，次品烟包频率由37.6包/班次降低至8.4包/班次，改进后比改进前降低了77.7%。结论 设计的小盒商标纸在线压痕装置可使商标纸挺度处于适宜水平，降低了该类缺陷烟包频率，提高了烟包包装质量。该技术可为提高双铝包包装机的产品质量、作业效率及稳定性提供支持。

The work aims to solve the problems that the side of the small box of cigarette packs pops open and folds, and the cigarette packs are deformed due to insufficient die-cutting and indentation on the trademark paper of the small double-aluminum pack. An online indenting device for small box label paper was designed. The device included a frame, transmission shaft, a rolling wheel, a indenting piece, a paper guide wheel, a counter-pressing wheel, a indenting avoiding part and a paper supporting wheel. At the same time, an orthogonal test was carried out to obtain the optimal parameter combination of the radius of the indented part, the arc length of the blade edge and the operating speed of the packaging machine. After the indenting device was improved, the average absolute error in indentation stiffness of small box label paper was reduced from 6.0 to 1.9, and the frequency of defective cigarette packs was reduced from 37.6 packs/shift to 8.4 packs/shift, which was a 77.7% reduction from the original one. The designed online indenting device for small boxes of trademark paper can keep the stiffness of the trademark paper at an appropriate level, reduce the frequency of such defective cigarette packs, and improve the packaging quality of cigarette packs. This technology can provide support for improving the product quality, operating efficiency and stability of the double-aluminum bag packaging machine.