Manufacturing mold of adjustable stair component

The utility model discloses a preparation mold of an adjustable stair component. The preparation mold comprises a stair bottom mold, the stair top die is matched with the stair bottom die; the two stair side formworks are arranged on the two sides of the stair bottom formwork and the stair top formwork; the two stair end molds are arranged at the end parts of the stair bottom mold and the stair top mold; a connecting rod is fixedly connected to the top of the stair end mold, an adjusting assembly used for adjusting ascending and descending of the stair top mold is installed on the side face of the connecting rod and comprises an installing threaded sleeve fixedly connected to the side face of the connecting rod, an adjusting bolt is connected to the installing threaded sleeve in a threaded mode, and a connecting bearing is rotationally installed at the bottom of the adjusting bolt. The bottom of the adjusting bolt is rotationally installed on the top of the stair top formwork through a connecting bearing. The