The SXJ-1 Triangular Core Winding Machine is novel in shape, simple in structure, and more labor-saving and comfortable in operation. The two main beam trailing boards are driven by the left and right rotary screw and move synchronously in both directions. The moving width is 1350MM. The two main beam trailing boards can move forward and backward automatically. The moving distance is 300MM. The main shaft is driven by the worm gear reducer. The transmission performance is stable during operation, low noise and good self-locking.