CPC B29C 64/209 (2017.08) [B29C 64/227 (2017.08); B29C 64/295 (2017.08); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] | 18 Claims |
1. An idle assembly for a three-dimensional printer head, including
an idle arm body;
a spindle mounted in the idle arm body, proximal to a first end of the idle arm body;
an idle hob rotatable around the spindle, wherein the idle hob defines a perimeter;
a channel defined in the perimeter of the idle hob;
a first eccentric cam, wherein the idle arm body and eccentric cam are rotatable around a first pivot proximal to a second end of the idle arm body;
a second eccentric cam, rotatable around a second pivot; and
a leaf spring affixed to the idle arm body proximal to the second end of the idle arm body, wherein the leaf spring is biased against the second eccentric cam at a second end of the leaf spring.
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