3D printer consumable extrusion device

The utility model relates to the technical field of 3D (three-dimensional) printers, and discloses a 3D printer consumable extrusion device, which comprises a stock bin, a feeding pipe, a feeding pipe, a feeding pipe, a discharging pipe and a discharging pipe, and is characterized in that one side of the top of the stock bin is connected with the feeding pipe; the extrusion assembly is used for extruding the consumables in the stock bin; the material grinding mechanism is used for grinding and mixing consumables fed into the material bin through the feeding pipe, the material grinding mechanism comprises a grinding plate installed in the middle of the interior of the material bin, dense discharging holes are formed in the grinding plate, the interior of the material bin is divided by the grinding plate, so that a grinding cavity and a mixing cavity are formed in the interior of the material bin, and the grinding cavity is communicated with the discharging holes. According to the 3D printer feeding device, gri