Spinning frame drafting mechanism suitable for spinning flax siro yarn

The invention discloses a spinning frame drafting mechanism suitable for spinning flax siro yarn, which is characterized in that an equidistant smooth component is mounted at the end part between two side plates, a parallel hopper is welded at the top end of an upper adjusting block, an upper rotating block is welded in the middle of an upper bidirectional screw rod, and one end of a rotating pipe is rotationally sleeved with a fixed hopper; yarns sequentially penetrate through the parallel hopper and the fixed hopper, an upper bidirectional lead screw and a lower bidirectional lead screw are rotated respectively, so that the yarns are parallel, the driving motor drives the rotating pipe to rotate, the rotating pipe is driven by the driving motor to rotate, and the yarns are driven by the driving motor to rotate. The rotating pipe rubs the outer side of the yarn, yarn hairiness is spirally attached to the outer side of the yarn, the outer side of the yarn becomes smoother, air fed by the micro air pump is blo