Low-pressure casting mold for improving forming quality of rim area of aluminum wheel

A low-pressure casting mold for improving the forming quality of an aluminum wheel rim area comprises a top mold, a water channel for cooling is arranged on the upper portion of the top mold corresponding to the inner rim of a rim, and the vertical height between the water channel and the inner rim is 25 mm; the part, corresponding to the upper half section of the rim, of the upper portion of the top die is of a split structure, and a parting surface is located above a tooth groove in the upper end of the rim by 12-15 mm. Comprising a side die, the middle of the side die is linearly cut corresponding to an alveolar cavity, and the linear cutting distance is 3mm from a side die back cavity. The die is simple in structure, overcomes the defects of the existing die design, can accurately control the regional performance of a casting rim, reduces the defects of shrinkage porosity of a tooth groove position and the like, improves the forming quality of a product, greatly improves the metal utilization rate, the co