The utility model discloses a high -speed chain positioner that dials of chemical fibre spinning cake wrapping machine dials the chain and passes through the servo motor drive, and the mode that adopts pulse control + speed control to combine together is controlled, and realize through the secondary location, adopts the multiunit sensor to advance line location, prevents that sensor is malfunctioning or damages and cause the high -speed chain mistake location of dialling to addition time control prevents to dial the chain mistake and moves, automatic timer group chain operating duration, it does not fix a position the completion and then stops to dial the chain operation immediately to exceed 1.2 times normal operating duration like operating duration to send malfunction alerting. The utility model discloses simple structure, the programming realizes easily, realized the high -speed accurate positioning of group chain, solved accumulative error that high frequency unilateral movement led to the fact and processing installation error to the influence of the normal work of wrapping machine, has realized slowly opening delaying the purpose of stopping and scurrying before the spinning cake from holding in the palm inertia in order preventing to the protection is moved to the mistake that has increased group chain.