Transformation of Suction Belt Tensioning Cylinder in PROTOSM5 Cigarette Maker

针对PROTOSM5卷接机组吸丝带张紧气缸因密封失效与烟尘侵入导致的烟支端部紧头偏移问题，本研究提出了一种基于有杆气缸与防尘结构的系统性改造方案。通过分析原无杆气缸(FESTO DGP-18-300-PPV-GK)因摩擦系数动态变化引发的张力衰减机理，结合PROTOS2-2设备成熟经验，创新设计双作用有杆气缸(DSNU-25-250-P-A)与波纹管防尘套(DADB-S1-25-S201-250)集成系统。改造后张紧力稳定性提升82%，气缸使用寿命延长至18个月(原周期 ≤ 6个月)，设备空头率由0.35%降至0.08%。通过导轨滑块精密配合(H7/g6公差)、气路压力优化(3.0 ± 0.2 bar)及密封盖板拓扑重构，实现了烟丝束动态速度与劈刀盘线速度的同步误差 ≤ 0.5 mm/s。为PROTOS系列设备工艺缺陷治理提供了可复用的工程范式。Regarding the problem of the end of the cigarette being misaligned due to the failure of the sealing mechanism and the intrusion of smoke dust in the tensioning cylinder of the PROTOSM5 cigarette-making machine, this study proposes a systematic renovation scheme based on the rod-type cylinder and dust-proof structure. By analyzing the tension attenuation mechanism caused by the dynamic change of the friction coefficient in the original rod-type cylinder (FESTO DGP-18-300-PPV-GK), and combining the mature experience of the PROTOS2-2 equipment, an integrated system of double-acting rod-type cylinder (DSNU-25-250-P-A) and corrugated pipe dust-proof sleeve (DADB-S1-25-S201-250) was innovatively designed. After the renovation, the stability of the tension force was improved by 82%, and the service life of the cylinder was extended to 18 months (the original cycle ≤ 6 months), and the equipment’s empty cigarette rate was reduced from 0.35% to 0.08%. Through precise cooperation of the guide rail slider (H7/g6 tolerance), optimization of the air path pressure (3.0 ± 0.2 bar), and topological reconstruction of the sealing cover plate, the synchronous error between the dynamic speed of the cigarette bundle and the line speed of the cutter disc was ≤ 0.5 mm/s. This provides a reusable engineering paradigm for the process defect governance of the PROTOS series equipment.