US 12,246,490 B2
Method and system for additive manufacturing using closed-loop temperature control
Amit Feffer, Ramat HaSharon (IL); Gil Shelef, Kibbutz Negba (IL); Haim Rotfeld, Mazkeret Batya (IL); and David Prizant, Kfar Achim (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Filed by Stratasys Ltd., Rehovot (IL)
Filed on Jun. 23, 2022, as Appl. No. 17/847,284.
Application 17/847,284 is a continuation of application No. 17/280,282, granted, now 11,413,826, previously published as PCT/IL2019/051072, filed on Sep. 27, 2019.
Claims priority of provisional application 62/737,172, filed on Sep. 27, 2018.
Prior Publication US 2022/0324178 A1, Oct. 13, 2022
Int. Cl. B29C 64/393 (2017.01); B28B 1/00 (2006.01); B28B 17/00 (2006.01); B29C 64/112 (2017.01); B29C 64/364 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B33Y 50/02 (2015.01)
CPC B29C 64/393 (2017.08) [B28B 1/001 (2013.01); B28B 17/0081 (2013.01); B29C 64/112 (2017.08); B29C 64/364 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 50/02 (2014.12)] 23 Claims
OG exemplary drawing
 
1. A system for additive manufacturing, comprising:
a computerized controller configured to receive computer object data arranged in slices of an object, each slice defining a layer having an area;
a dispensing head for dispensing building materials;
a hardening system for hardening said building materials to provide hardened building materials emitting thermal energy; and
a cooling system having a fan for evacuating heat away from said building materials; and
wherein said computerized controller has a circuit for controlling said dispensing head to dispense said building materials in layers based on said computer object data, said hardening system to harden said building materials, and said cooling system to evacuate heat away from said layers, wherein said circuit is configured to vary a rotating speed of said fan as a decreasing function of an area of a layer defined by a respective slice of said computer object data.