Shear structure for yarn

The utility model provides a shear structure for yarn. The shear structure for yarn comprises a guiding device for a thread clipper, a driven thread clipper, a conveyor strip and a driving mechanism for the conveyor strip, wherein the conveyor strip passes through the driving mechanism for the conveyor strip and moves under the control of the driving mechanism for the conveyor strip, the guiding device for the thread clipper is disposed above the conveyor strip, and the driven thread clipper is arranged under the conveyor strip. Furthermore, the driven thread clipper is connected with the guiding device for a thread clipper through a thread clipper shaft, the guiding device for a thread clipper includes two guiding strips, the two strips are 7-shaped, and mounting holes for fixing yarn are formed on the guiding strips. The shear structure for yarn has the advantages that trimming thread is quick and convenient, the thread clipper is disposed at the joint of yarn collection, and the yarn can be sheared at once