Selective laser sintering powder spreading roller cleaning mechanism

The utility model discloses a selective laser sintering powder spreading roller cleaning mechanism. Workbench, one side of the top surface of the workbench is fixedly provided with the bottom surfaceof an L-shaped plate vertical plate; a rectangular groove is formed in the bottom face of a horizontal plate of the L-shaped plate, a plurality of installation grooves which are evenly and longitudinally distributed are formed in the two sides of the inner wall of the rectangular groove respectively, electric push rod fixing rods with the limiting function are fixedly installed in the installationgrooves respectively, a rectangular plate is arranged in the rectangular groove, and the two sides of the rectangular plate are fixedly connected with the inner ends of the corresponding electric push rod movable rods respectively. Powder on the surface of the powder spreading roller is brushed away by the bristles; powder falls into the collecting tank through gaps between the rolling shafts under the action of gravity,