Dragging knife semi-cutting device for fabric cutting

The utility model relates to a dragging knife semi-cutting device for fabric cutting, which comprises a cutting sleeve provided with a mounting hole; the tool rest seat slides in the mounting hole and is provided with a tool rest shaft, the tool rest shaft penetrates out of the mounting hole, and a blade assembly is mounted at the tail end of the tool rest shaft. The pressure adjusting seat is spirally connected to the mounting hole and is in inserted sliding connection with the tool rest seat; and the spring piece is arranged on the pressure adjusting base in a sleeving mode, one end of the spring piece abuts against the pressure adjusting base, the other end of the spring piece abuts against the tool rest base, and the tool rest base telescopically moves along the mounting hole under the action of the elastic pre-tightening force of the spring piece. The presser foot seat is installed on the tool apron shaft and provided with a presser foot face, and the tail end of the blade assembly exceeds the presser fo