Spinning frame bobbin replacing mechanism, spinning frame adopting mechanism and bobbin replacing method of spinning frame

The invention provides a bobbin replacing method and mechanism of a spinning frame. The spinning frame comprises a creel for hanging rough yarn bobbins, drafting units for drafting rough yarns, spindles capable of rotating at a high speed, fine yarn bobbins sleeving the spindles, a ring plate sleeving the fine yarn bobbins and a steel wire ring arranged on the ring plate and driving fine yarns torotate; the fine yarns drafted by the drafting units are wound around the fine yarn bobbins rotating with the spindles; the spinning frame further comprises the bobbin replacing mechanism with a function of integrally replacing the fine yarn bobbins, wherein a bobbin grabbing mechanism, clamping the fine yarn bobbins, of the bobbin replacing mechanism is a mechanical automatic bobbin grabbing andlaying-down mechanism. According to the bobbin replacing method and mechanism of the spinning frame, the bobbin grabbing mechanism of the bobbin replacing mechanism is the mechanical automatic bobbingrabbing and laying-down me