Abrégé

The invention relates to a method for producing 3D shaped articles, in which method: a suspension comprising metallic, ceramic or polymer particle material or cement-bound materials is applied as a suspension layer to a construction platform to produce a layer; the layer thus applied is at least partially dried; a binder is selectively applied; and the selectively applied binder is solidified; these steps being repeated until the desired 3D shaped article has been obtained; where necessary, the particle material which has not been solidified by means of the binder is removed; and the 3D shaped article is unpacked; wherein the suspension for producing a layer is applied by means of a sieve plate, which is positioned onto the last applied layer on the construction platform and through which the suspension is applied to the last particle material layer; and wherein the sieve plate is removed again before the selective application of the binder.

Classes IPC  ?

• B29C 64/165 - Procédés de fabrication additive utilisant une combinaison de matériaux solides et liquides, p.ex. une poudre avec liaison sélective par liant liquide, catalyseur, inhibiteur ou absorbeur d’énergie
• B29C 64/205 - Moyens d’application des couches
• B29C 64/214 - Racles
• B22F 10/14 - Formation d’un corps vert par projection de liant sur un lit de poudre
• B22F 1/00 - Poudres métalliques; Traitement des poudres métalliques, p.ex. en vue de faciliter leur mise en œuvre ou d'améliorer leurs propriétés
• B33Y 10/00 - Procédés de fabrication additive
• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet

Abrégé

A printing system (1) for printing three-dimensionally shaped structures, in particular on substrates such as circuit boards, wafers, solar cells, carrier substrates, printing tables, carrier plates, sintering plates or the like, having at least one printing device (2) which has a printhead (8), having a squeegee device (9) and a screen receptacle (10), which is associated with the squeegee device (9), for receiving a printing screen (11). According to the invention, a screen provision device (25) has at least one screen magazine (3) for storing multiple printing screens (11) and a conveying device (4) for conveying a printing screen (11) from the screen magazine (3) to the screen receptacle (10) and from the screen receptacle (10) to the screen magazine (3).

Classes IPC  ?

• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
• B33Y 40/00 - Opérations ou équipements auxiliaires, p.ex. pour la manipulation de matériau
• B29C 64/214 - Racles
• B29C 64/209 - Têtes; Buses
• B29C 64/30 - Opérations ou équipements auxiliaires
• B29C 64/245 - Plates-formes ou substrats
• B29C 64/227 - Moyens d’entraînement

Abrégé

The invention relates to a screen provision system (25), in particular for a printing device (2) which has a screen receptacle (10) for a printing screen (11) and a squeegee device (9) which is associated with the screen receptacle (10), having a conveying device (4) for conveying a printing screen (11), having at least one screen magazine (3, 3_1-3_3) which has multiple screen storage portions (14) that can each receive a printing screen (11) and in particular having at least one treatment station (26-28) for treating the printing screens (11), the conveying device (4) supplying printing screens (11) to the screen magazine (3, 3_1-3_3) and in particular to the at least one treatment station (26-28).

Classes IPC  ?

• B41F 15/08 - Machines

Abrégé

A screen unit (19) for a printing device (2) for printing three-dimensionally shaped structures, in particular on substrates, circuit boards, wafers, solar cells, carrier substrates, printing tables, carrier plates, sintering plates or the like, wherein the screen unit (19) has a frame (18) holding at least one printing screen (11) and is designed to be accommodated in a screen receptacle (10) of the printing device (2), to be filled with a printing compound and to be subjected to the action of a squeegee (21) for carrying out a printing process. According to the invention, the screen unit (19) has, in or on the frame (18), at least one holding device (20) for the squeegee (21), which is in the form of an exchangeable squeegee.

Classes IPC  ?

• B33Y 30/00 - Appareils pour la fabrication additive; Leurs parties constitutives ou accessoires à cet effet
• B33Y 40/00 - Opérations ou équipements auxiliaires, p.ex. pour la manipulation de matériau
• B29C 64/214 - Racles
• B29C 64/209 - Têtes; Buses
• B29C 64/30 - Opérations ou équipements auxiliaires
• B29C 64/245 - Plates-formes ou substrats
• B29C 64/227 - Moyens d’entraînement