US 11,987,000 B2
Apparatus, system and method of providing dynamic hob pinch force in an additive manufacturing print head
Scott Klimczak, St. Petersburg, FL (US); Luke Rodgers, St. Petersburg, FL (US); and Darin Burgess, St. Petersburg, FL (US)
Assigned to JABIL INC., St. Petersburg, FL (US)
Filed by JABIL INC., St. Petersburg, FL (US)
Filed on Aug. 2, 2021, as Appl. No. 17/391,740.
Application 17/391,740 is a continuation of application No. 17/417,048, previously published as PCT/US2019/066846, filed on Dec. 17, 2019.
Claims priority of provisional application 62/782,574, filed on Dec. 20, 2018.
Prior Publication US 2021/0370593 A1, Dec. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 64/118 (2017.01); B29C 64/209 (2017.01); B29C 64/321 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01)
CPC B29C 64/209 (2017.08) [B29C 64/321 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B29C 64/118 (2017.08)] 19 Claims
OG exemplary drawing
 
1. A print head for additive manufacturing, comprising:
at least two proximate hobs suitable to receive and extrude therebetween a print material filament for the additive manufacturing;
a motor capable of imparting a rotation to at least one of the two hobs, wherein the extrusion results from the rotation;
a dynamic force adjustment capable of exerting force on one of the two hobs to urge the force-receiving hob toward the other of the two hobs; and
a controller adapted to control a feed speed and slippage of the print material filament in part by controlling the exerted force.