CPC B29C 64/209 (2017.08) [B29C 64/118 (2017.08); B29C 64/227 (2017.08); B29C 64/386 (2017.08); B29C 48/05 (2019.02); B29C 48/2886 (2019.02); B29C 64/106 (2017.08); B29C 64/20 (2017.08); B29C 64/205 (2017.08); B29C 64/307 (2017.08); B29C 64/321 (2017.08); B29C 64/343 (2017.08); B29C 64/393 (2017.08); B29K 2101/12 (2013.01); B33Y 30/00 (2014.12); B33Y 50/00 (2014.12); B33Y 50/02 (2014.12)] | 19 Claims |
1. A print head used for additive manufacturing with print filament, comprising:
a nozzle having an interior chamber extending between first and second longitudinal ends thereof and providing a melt zone therein, wherein the print filament is fed into the first longitudinal end of the nozzle, into the interior chamber, is heated in the melt zone, and is extruded from the second longitudinal end of the nozzle;
two proximate hobs suitable to receive and feed therebetween into the first longitudinal end the print filament for the additive manufacturing, each of the two hobs comprising two opposing halves, wherein each of the respective hob's two halves comprises teeth that are offset with respect to the teeth of the opposing hob half; and
a motor capable of imparting a rotation to at least one of the two hobs, wherein the extrusion results from the rotation.
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