US 12,240,170 B2
Nozzle device for FDM-type 3D printer
Dong Nyoung Heo, Seoul (KR); and Il Keun Kwon, Seoul (KR)
Assigned to BIOFRIENDS INC., (KR)
Appl. No. 18/010,806
Filed by BIOFRIENDS INC., Seoul (KR)
PCT Filed Jun. 7, 2021, PCT No. PCT/KR2021/007080
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2021/256757, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 10-2020-0073070 (KR), filed on Jun. 16, 2020.
Prior Publication US 2023/0249404 A1, Aug. 10, 2023
Int. Cl. B29C 64/209 (2017.01); B29C 64/118 (2017.01); B29C 64/264 (2017.01); B29C 64/295 (2017.01); B29C 64/30 (2017.01); B29C 64/336 (2017.01); B29C 64/371 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/10 (2020.01)
CPC B29C 64/209 (2017.08) [B29C 64/118 (2017.08); B29C 64/264 (2017.08); B29C 64/295 (2017.08); B29C 64/30 (2017.08); B29C 64/336 (2017.08); B29C 64/371 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A nozzle device for an FDM-type 3D printer, the device comprising:
a filament supply unit to which a filament for FDM is supplied;
a heat dissipation unit having a concave-convex portion;
a transfer pipe wrapped around the filament supply unit along the concave-convex portion;
a filament nozzle positioned under the filament supply unit and melting the filament supplied from the filament supply unit to output the molten filament;
a heater block installed around the filament nozzle to melt the filament inside the filament nozzle;
a gas tank;
an aerosol generation unit configured to generate nanoparticle aerosol;
a plasma generation unit configured to generate plasma; and
a plasma nozzle for discharging the plasma to the molten filament,
wherein the nanoparticle aerosol generated in the aerosol generation unit flows to the plasma generation unit through the transfer pipe together with the gas in the gas tank, and
wherein the molten filament being output from the filament nozzle is surface-treated by the nanoparticles and the plasma generated from the plasma generation unit.