Die for manufacturing section steel joint precast beam

The utility model provides a mould for manufacturing a section steel joint precast beam, which belongs to the field of buildings and comprises a support. The side die is detachably arranged on the support; the positioning clamp is detachably mounted on the support and used for limiting the position of the precast beam type steel joint; and the plurality of fixed magnetic boxes are magnetically connected with the support and are respectively used for clamping the side molds and the positioning clamps. In the production process, profile steel joints at the two ends of the precast beam are adjusted and fixed; the positions of the profile steel joint positioning clamp, the side mold and the side mold reinforcing clamp can be flexibly adjusted, so that the device is suitable for manufacturing profile steel joint precast beam components with different specifications and can be repeatedly utilized; the profile steel joint positioning clamp, the side mold and the side mold reinforcing clamp are convenient to mount an