The invention relates to the field of thermal die-casting equipment, in particular to a thermal die-casting machine for an aluminum belt pulley of a washing machine. The thermal die-casting machine comprises a positioning die-casting device and a bearing and conveying device. The die-casting device comprises a supporting rack, a die-casting driving part and a die-casting part. The bearing and conveying device comprises a bearing rack, a first transmission part, a second transmission part and a material taking part mounted on the bearing rack. A plurality of bearing assemblies which are arranged in an equally spaced manner are arranged on the first transmission part, each bearing assembly can be detachably mounted on the first transmission part, a plurality of material bearing assemblies which are arranged in a spaced manner are arranged on the second transmission part, the material taking part walks on the side part of the bearing assembly and the side part of the material bearing part, and the die-casting part is in butt joint to one bearing assembly in a working state. By achieving a die-casting operation automatically, cooled castings are conveyed accurately, so that manual output is reduced. The device is simple in structure and low in operating cost.