US 11,745,411 B2
Method and device for producing a three-dimensional shaped object by means of layer-by-layer material application
Hans Mathea, Eggenstein-Leopoldshafen (DE); and Martin Bohn, Reutlingen (DE)
Assigned to dp polar GmbH, Eggenstein-Leopoldshafe (DE); and ALTANA AG, Wesel (DE)
Filed by dp polar GmbH, Eggenstein-Leopoldshafen (DE); and ALTANA AG, Wesel (DE)
Filed on Jan. 11, 2023, as Appl. No. 18/95,895.
Application 18/095,895 is a continuation of application No. 16/484,969, granted, now 11,565,461, previously published as PCT/EP2018/053365, filed on Feb. 9, 2018.
Claims priority of application No. 10 2017 001 276.8 (DE), filed on Feb. 11, 2017.
Prior Publication US 2023/0166443 A1, Jun. 1, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 64/218 (2017.01); B29C 64/112 (2017.01); B29C 64/264 (2017.01); B29C 64/245 (2017.01); B29C 64/255 (2017.01); B29C 64/209 (2017.01); B29C 64/393 (2017.01); B29C 64/10 (2017.01); B29C 64/188 (2017.01); B33Y 70/00 (2020.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01); B33Y 50/02 (2015.01)
CPC B29C 64/112 (2017.08) [B29C 64/10 (2017.08); B29C 64/188 (2017.08); B29C 64/209 (2017.08); B29C 64/218 (2017.08); B29C 64/245 (2017.08); B29C 64/255 (2017.08); B29C 64/264 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B33Y 50/02 (2014.12)] 13 Claims
OG exemplary drawing
 
1. A device for producing a three-dimensional shaped object by means of layer-by-layer material application, comprising:
a substrate part having a base surface for holding the shaped object,
a first reservoir for holding a flowable first material and a second reservoir for holding a flowable second material that differs from the first material,
a dispensing mechanism connected with the first reservoir for dispensing material portions of the first material onto the base surface and/or onto a solidified material layer of the three-dimensional shaped object located on the base surface, wherein the substrate part and the dispensing mechanism are movably positionable relative to one another during dispensing of the portions of the first material onto the base surface and/or onto the solidified material layer of the three-dimensional shaped object located on the base surface to form at least one first material layer of the three-dimensional shaped object, and wherein positioning of the substrate part relative to the dispensing mechanism is conducted according to geometric data of the shaped object to be produced which is stored on a data memory of the device,
a material application mechanism for applying at least one second material layer composed of the second material to a topmost solidified first material layer of the at least one first material layer, wherein a surface of the material application mechanism is arranged at a constant distance from the base surface, wherein the material application mechanism comprises a transfer body and a coating mechanism in contact with the second reservoir, wherein at least one surface region of the transfer body is coated with a layer of the second material via the coating mechanism, wherein the at least one surface region of the transfer body is movably positionable relative to a surface of the topmost solidified first material layer that faces away from the base surface to cause a layer of the second material to be transferred from the transfer body to the surface of the topmost solidified first material layer, and wherein the structure of the at least one second material layer corresponds in an orthogonal projection onto the base surface and at least in certain regions thereof to a structure that the topmost solidified first material layer of the three-dimensional shaped object has in the orthogonal projection onto the base surface, and
at least one fixation mechanism for solidifying the at least one first material layer and for solidifying the at least one second material layer,
wherein the transfer body is structured as an application roll which is driven to rotate about an axis of rotation disposed parallel to the base surface, and the dispensing mechanism and the application roll are rotatable relative to the substrate part about an axis disposed normal to the base surface, the application roll is conical, and an axis of rotation of the application roll intersects the axis disposed normal to the base surface.