Dynamic detection and alarm device for swing wire flatness

The utility model specifically discloses a dynamic detection alarm device for swing yarn flatness. The dynamic detection alarm device comprises a reciprocating frame capable of moving along the Y-axis direction; the yarn swinging arm is hinged to the reciprocating frame and can swing in the X-axis direction; the first guide rail is mounted on the reciprocating frame and extends in the X-axis direction; the second guide rail is installed on a first sliding base of the first guide rail and extends in the Z-axis direction, the second guide rail can move along the first guide rail, and the side edge of the lower end of the yarn swinging arm is hinged to a second sliding base of the second guide rail; and the laser distance measuring sensor is arranged on the second guide rail and is electrically connected with the alarm through the controller. According to the device, the collection range of the height of tows in the tow collection box can cover the upper end face of the whole tow, and it is guaranteed that the f