The demerit of rolling plate jam detection and pneumatic cleaning device in PASSIM and SUPER 9 cigarette making and tipping machine combination was that, the negative pressure sensor would be damaged when the tightness of air valve went down. PASSIM和SUPER9卷接机组中的搓板堵塞检测及清洁气动组件设计不合理,当气阀的密封性下降时会损坏搓板堵塞检测负压传感器。