Stretching mechanism on weft straightener

The invention provides a stretching mechanism on a weft straightener, which comprises a workbench, a detection assembly, a moving assembly and a straw plaited summer sleeping mat. The straw plaited summer sleeping mat is arranged on the workbench, and the moving assembly and the detection assembly are both arranged on the workbench. The moving assembly is in linkage connection with the detection assembly, and the moving assembly corresponds to the straw plaited summer sleeping mat. The straw plaited summer sleeping mat comprises a frame, a plurality of plaited transverse strips and fixed plaited strips. The plurality of fixed weaving strips are arranged in the frame at equal intervals, and the plurality of weaving transverse strips are transversely inserted on the fixed weaving strips in a penetrating manner. And the moving assembly corresponds to the weaving transverse strip. According to the stretching mechanism on the weft straightener, through mutual cooperation of the workbench, the detection assembly, t