US 12,441,098 B2
Apparatus and method for the production of three-dimensional screen-printed workpieces
Srdan Vasic, Stetten (CH); and David L. Deck, Stetten (CH)
Assigned to Exentis Knowledge GmbH, Stetten Ag (CH)
Appl. No. 17/604,738
Filed by Exentis Knowledge GmbH, Stetten Ag (CH)
PCT Filed Apr. 15, 2020, PCT No. PCT/EP2020/060501
§ 371(c)(1), (2) Date Oct. 18, 2021,
PCT Pub. No. WO2020/212370, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19170344 (EP), filed on Apr. 18, 2019.
Prior Publication US 2022/0176690 A1, Jun. 9, 2022
Int. Cl. B41F 15/08 (2006.01); B41F 15/18 (2006.01)
CPC B41F 15/18 (2013.01) [B41P 2215/112 (2013.01); B41P 2215/114 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An apparatus (10) for producing three-dimensional screen-printed workpieces, the apparatus (10) comprising:
a printing device (12) for a layer-by-layer production of at least one screen-printed workpiece in a plurality of printing operations; and
at least one workpiece carrier (14) for the at least one screen-printed workpiece, and a transport device having a transport circuit for an automated transport of the at least one workpiece carrier wherein:
the printing device (12) comprises:
at least one printing table plate (16) being formed separately from the at least one workpiece carrier and on which the at least one workpiece carrier (14) can be positioned for carrying out a printing process,
an upper printing mechanism (28) with a printing screen and a position detection device for detecting the position of the at least one workpiece carrier (14),
the workpiece carrier (14) carrying the screen-printed workpiece between two successive printing processes for a screen-printed workpiece being detachable from the printing table plate (16) for drying the screen-printed workpiece,
the printing device (12) is configured for fine adjustment, and
the fine adjustment comprises position detection of the at least one workpiece carrier (14) by the position detection device and the adjustment of a relative position and/or relative alignment between the at least one workpiece carrier (14) and the printing screen dependent on the position detection.