US 12,070,896 B2
Extrusion head for additive manufacturing, additive manufacturing system and method
Nicola Piccirelli, Moissy-Cramayel (FR); Benoît Bazin, Moissy-Cramayel (FR); Daniel Therriault, Quebec (CA); Thierry Lafrance, Quebec (CA); and Francis Trudeau Lalonde, Quebec (CA)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/605,441
Filed by SAFRAN, Paris (FR)
PCT Filed Apr. 8, 2020, PCT No. PCT/EP2020/059971
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/216618, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 3041017 (CA), filed on Apr. 23, 2019.
Prior Publication US 2022/0193985 A1, Jun. 23, 2022
Int. Cl. B29C 64/209 (2017.01); B29C 64/118 (2017.01); B29C 64/314 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/10 (2020.01)
CPC B29C 64/118 (2017.08) [B29C 64/209 (2017.08); B29C 64/314 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01)] 5 Claims
OG exemplary drawing
 
1. An extrusion head for additive manufacturing comprising an enclosure defining a supply chamber, the enclosure including at least one inlet port opening into the supply chamber and configured to receive a material to be extruded under pressure and a plurality of extrusion nozzles, each extrusion nozzle of the plurality of extrusion nozzles being in communication with a distribution outlet of said supply chamber and opening onto the exterior of the enclosure via an extrusion nozzle outlet orifice, extrusion nozzles of the plurality of extrusion nozzles being arranged adjacent to one another with a determined spacing between each extrusion nozzle outlet orifice of the plurality of extrusion nozzles, wherein the enclosure is formed by a first and second semi-annular portions fastened together by clamping screws and the plurality of extrusion nozzles is present on one of the first and second semi-annular portions which is removable, and wherein the supply chamber includes a first and second sloping walls present respectively on the first and second semi-annular portions and forming together a duct in the supply chamber, the passage section of which shrinks progressively between the inlet port and said distribution outlet of the supply chamber.