Connecting and positioning device suitable for narrow space in combined die

The invention relates to the field of composite material manufacturing, in particular to positioning connection of a combined mold applying a composite material complex rotary cavity structure, and the combined mold is convenient to disassemble and assemble. The invention discloses a connecting and positioning device suitable for a narrow space in a combined die. The connecting and positioning device comprises an upper supporting plate, a lower supporting plate, positioning pins and a loading and unloading device, the upper supporting plate and the lower supporting plate are installed on the upper portion and the lower portion in the combined die respectively, and through holes are formed in the corresponding positions of the upper supporting plate and the lower supporting plate. The outer diameter of the positioning pin is matched with the inner diameter of the through hole, and the length is not greater than the thickness of the lower supporting plate; when the combined die is combined, the positioning pin