Sand burying box for casting

The utility model relates to the technical field of sand boxes, in particular to a sand burying box for casting, which is characterized in that according to the height of a workpiece to be processed and cast, a lower sand box and an upper sand box are respectively heightened by sand box components through a lower groove and an upper groove, and meanwhile, the sand box components can also be heightened, so that the casting height is increased, and the casting efficiency is improved. Preparation of sand boxes of different models is reduced, and the production cost is reduced; comprising a lower sand box, an upper sand box, lower through holes, upper grooves and upper through holes, the lower grooves are formed in the four corners of the bottom end of the lower sand box correspondingly, the lower through holes are formed in the lower grooves correspondingly, the upper grooves are formed in the four legs of the top end of the upper sand box correspondingly, and the upper through holes are formed in each set of up