Mold assembly for fabricated building wallboard

The utility model provides a mould assembly for a fabricated building wallboard, which relates to the technical field of wallboard moulds and comprises a support, the top of the support is fixedly connected with a heating mechanism, the heating mechanism comprises a fixing frame, the bottom of the fixing frame is fixedly connected with the top of the support, the top of the fixing frame is provided with a fixing groove, and the fixing groove is fixedly connected with the support. Four sliding blocks are slidably connected to the inner wall of the fixing groove, a branch pipe is fixedly connected between one sides of every two sliding blocks, a supporting rod is arranged on the inner wall of each branch pipe, one end of each supporting rod is fixedly connected with one side of the corresponding sliding block, and a heating wire is arranged on the inner wall of each branch pipe. According to the concrete mold, the temperature in the fixing frame is increased through the heating wire, so that water in concrete c