Self-stopping feeder of spun yarn broken end and ends

The utility model relates to an automatic stopping feeder of spun yarn broken ends and ends. The utility model is composed of a supporting rack and a sensor, wherein the sensor is fixed on a yarn guiding plate of a spinning frame; the inner part of the supporting rack is fixedly provided with a spring return type electromagnet; one end of the electromagnet is connected with a locking hook; the inner part of the supporting rack is provided with a movable sliding plate; a spring is arranged between the supporting rack and the movable sliding plate; the movable sliding plate is connected with a handle, and the handle is arranged in the supporting rack; the other end of the movable sliding plate is provided with a semicircle annular inserting sheet; the sensor is connected with the electromagnet by a conducting wire; the supporting rack is fixed on a supporting rod of a swinging frame of the spinning frame; an inserting foot is arranged outside the semicircle annular inserting sheet; the other end of the movable sliding plate is provided with holes; the semicircle annular inserting sheet is sheathed on a back roller of the spinning frame. When spun yarn is broken, the electromagnet is moved to release the movable sliding plate, and then, the semicircle annular inserting sheet is inserted between the back roller and a back leather roller in a rotating mode around the back roller. Thus, ends are broken, the utility model prevents the feed of the ends, prevents batt strips from being wound on the roller, the leather roller and a leather ring, and prevents raw material wastage caused by that the batt strips are continuously sucked in by a flute tube after the yarn is broken.