Extruding-forming device of plate extruder

The utility model relates to an extruding-forming device of a plate extruder, which is exclusively used for the building materials. An upper and a side mould plates are used to form a forming cavity with the ground. The inner of the forming cavity can be provided with 2-8 extruding material feeding threaded rods according to needs. The threaded rod shaft is a pipe-shaped shaft and a fixed mandrel is penetrated in the threaded rod shaft. The penetrating out end of the fixed mandrel is arranged in the forming cavity and is tight fixed with a removable evacuation core mold. The threaded rod is rotated by the power to extrude the material. The fixed mandrel is quiet corresponding to the whole machine. The end part of the fixed mandrel is provided with a detachable evacuation core mold. The evacuation core mold is not needed being rotated in the process of extruding materials, which solves the problem that a non-circular evacuation hole plate can not be extruded by the prior art.