US 12,005,645 B2
Printhead cleaning device for a 3D printer, 3D printer comprising a printhead cleaning device, use of the printhead cleaning device and method for cleaning a printhead of a 3D printer
Christian Heufelder, Augsburg (DE); Carmen Brockmeier, Fischach (DE); Katrin Stalla, Wertigen (DE); Edmund Klundt, Augsburg (DE); and Roland Ladewig, Windeby (DE)
Assigned to ExOne GmbH, Gersthofen (DE)
Appl. No. 17/614,476
Filed by ExOne GmbH, Gersthofen (DE)
PCT Filed May 26, 2020, PCT No. PCT/EP2020/064589
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2020/239774, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 20 2019 102 983.8 (DE), filed on May 27, 2019.
Prior Publication US 2022/0227054 A1, Jul. 21, 2022
Int. Cl. B29C 64/30 (2017.01); B22F 10/14 (2021.01); B22F 12/53 (2021.01); B29C 64/165 (2017.01); B29C 64/209 (2017.01); B29C 64/35 (2017.01); B33Y 40/00 (2020.01); B33Y 30/00 (2015.01)
CPC B29C 64/30 (2017.08) [B22F 10/14 (2021.01); B22F 12/53 (2021.01); B29C 64/165 (2017.08); B29C 64/209 (2017.08); B29C 64/35 (2017.08); B33Y 40/00 (2014.12); B33Y 30/00 (2014.12)] 19 Claims
OG exemplary drawing
 
1. A print head cleaning device for a 3D printer configured to build a component in layers by means of binder jetting, the print head cleaning device comprising:
a cleaning agent feeding device comprising an elongated output opening and configured to output liquid cleaning agent through the elongated output opening, and
a suction device comprising an elongated suction gap and configured to suction fluid through the elongated suction gap,
wherein a longitudinal axis of the elongated output opening and a longitudinal axis of the elongated suction gap are arranged at an angle to each other,
wherein the angle is in the range of 20° to 60°.