US 12,128,584 B2
Printed object surface flattening-type 3D printer for construction
Ho Sung Na, Hanam-si (KR); Dong Hyun Kim, Seoul (KR); Kwan Seon Hong, Seoul (KR); and Hye Jin Ryu, Hanam-si (KR)
Assigned to SAMSUNG E&A CO., LTD., Seoul (KR)
Appl. No. 18/265,365
Filed by SAMSUNG E&A CO., LTD., Seoul (KR)
PCT Filed Jan. 5, 2022, PCT No. PCT/KR2022/000191
§ 371(c)(1), (2) Date Jun. 5, 2023,
PCT Pub. No. WO2022/149859, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 10-2021-0001790 (KR), filed on Jan. 7, 2021.
Prior Publication US 2023/0390959 A1, Dec. 7, 2023
Int. Cl. B28B 11/08 (2006.01); B28B 1/00 (2006.01); B33Y 30/00 (2015.01); B33Y 40/20 (2020.01)
CPC B28B 11/0845 (2013.01) [B28B 1/001 (2013.01); B33Y 30/00 (2014.12); B33Y 40/20 (2020.01)] 4 Claims
OG exemplary drawing
 
1. A printed object surface-flattening type 3D printer for construction, wherein a roller (50) mounted on a movable body (20), and configured to follow a nozzle (10) discharging a fluid material and parallel to the discharge direction of the fluid material is installed,
wherein a rotatable body (30) is installed on the movable body (20), the rotatable body (30) having an axis of rotation parallel to a discharge direction of the nozzle (10), and
a support shaft (40) of the roller (50) is connected to the rotatable body (30), such that as the rotatable body (30) rotates, the support shaft (40) and the roller (50) move along a circular arch centered on the axis of rotation,
wherein the roller (50) moves along with movement of the movable body (20) and the nozzle (10); and
an outer circumferential surface of the roller (50) is in contact with a surface of a printed object extruded from the nozzle (10) to thereby flatten the surface of the printed object,
wherein a planar rotatable plate (70) is connected to the rotatable body (30), wherein the inside of the planar rotatable plate (70) is hinged to the rotatable body (30); and
one end of the planar rotatable plate (70) is connected to the rotatable body (30) via an elastic body (73), such that as the elastic body (73) is stretched or contracted, the planar rotatable plate (70) rotates on a plane.