Double-screw particle powder 3D printer

The utility model discloses a twin-screw particle powder 3D printer which comprises a charging barrel, screws, a charging barrel pulling plate, a partition plate, a heater, a spray head and an outer charging barrel, the twin screws are arranged in the charging barrel, particle or powder materials are added through a hopper and then enter the charging barrel through a charging hose, and due to the fact that pressure is always established from a charging opening to the spray head, the particle or powder materials are fed into the charging barrel along with rotation of the screws. Materials are continuously conveyed towards the direction of the spray head, are gradually melted and plasticized under the combined action of shearing friction of the screw rod and the heater outside the charging barrel, and are extruded onto a working table through the spray head. An inner mounting position and an outer mounting position are arranged for the charging barrel and the screw rods of the printer, so that the distance betw