Paper jam detection system for folding machine

摘要

A paper jam detection system for a folding machine (Q) includes an interval signal generator (S) for generating an interval signal which assumes ON and OFF levels alternately according to cutting intervals of a cutting cylinder (B); a signature detection mechanism (A) including reflection plates (2) each having a light reflection surface (12) and being arranged circumferentially at an outer circumferential surface portion of a jaw cylinder (D) and a photoelectric sensor (1) adapted to generate a reflection plate detection signal upon detection of the reflection plate; and a control unit (T) for outputting a paper jam signal on the basis of the interval signal and the reflection plate detection signal.