Bird nest removing device for sewing machine and using method thereof

The invention provides a bird nest removing device for a sewing machine and a using method thereof. The bird nest removing device comprises a pull hook, a thread clamping plate, a machine needle and a presser foot plate, wherein the pull hook, the thread clamping plate, the machine needle and the presser foot plate are located below a machine head. The drag hook is connected with the machine head through a rotating shaft, the machine needle is provided with a needle eye allowing threads to penetrate through, the presser foot plate is located on a needle plate, the presser foot plate is provided with a thread passing groove corresponding to the machine needle, the thread passing groove extends in the moving direction of a sewing material, and a thread cutter is arranged at the bottom of the thread passing groove. According to the bird nest removing device for the sewing machine and the using method thereof, an arc swing hook thread clamping device is used for clamping machine needle thread residues after thread trimming, the enough stable thread quantity is provided for starting sewing through thread clamping and loosening time coordination of two thread clamp holders in the seam starting process next time, seam starting upper threads can be tightened quickly under the condition that bottom threads do not exist, the clamped thread residues are cut off at the position close to the sewing material needle hole, the remaining thread residues are short, and the problem of bird nest thread residues is solved thoroughly.