The invention relates to the technical field of
textile manufacturing, and provides a staple
fiber yarn forming device which comprises a winding seat, a winding mechanism and a guide mechanism, the winding mechanism comprises a rotating roller, a
bobbin and a rotating
assembly, the rotating roller is rotationally installed on the winding seat, the
bobbin detachably sleeves the
peripheral wall of the rotating roller, and the rotating
assembly is installed on the winding seat. The rotating
assembly is arranged on the winding base and used for driving the rotating roller to rotate. The guide mechanism comprises a guide seat, a guide block and a linkage assembly, the guide seat is provided with a guide slide way, the two ends of the guide slide way extend in the axial direction of the rotating roller, the guide block is installed on the guide slide way in a sliding mode, a penetrating hole is formed in the guide block, and twisted
yarn penetrates through the penetrating hole and is wound on the
peripheral wall of the
bobbin; the linkage assembly is arranged between the guide block and the rotating roller, and when the rotating roller rotates, the guide block moves in a reciprocating mode in the length direction of the guide sliding way. According to the forming device for the staple
fiber yarn, the possibility that the yarn is intertwined on the bobbin can be reduced.