Combined shaping mold for roof exhaust cap foundation

The utility model relates to a combined type shaping mould for a roof exhaust cap foundation, which comprises a side template used for casting to form the roof exhaust cap foundation, the side template comprises a plurality of side template units, two side edges of each side template unit are respectively provided with an outer folding edge, the outer folding edges are provided with screw holes, and the screw holes are connected with the side template units. Every two adjacent side formwork units are connected through bolts installed in the screw holes. A mold base is arranged at the bottoms of the side mold plates, the mold base is a closed frame formed by connecting rod pieces with the number equal to that of the side mold plate units, the length of the rod pieces is equal to that of the bottom edges of the side mold plate units, and any rod piece is rotationally connected with the bottom edge of one side mold plate unit. By adopting the shaping mold, the mounting speed is high, the sealing performance is g