Abstract

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.

IPC Classes  ?

• B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
• B29C 64/205 - Means for applying layers
• B29C 64/214 - Doctor blades
• B22F 10/14 - Formation of a green body by jetting of binder onto a bed of metal powder
• B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

Abstract

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).

IPC Classes  ?

• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B29C 64/214 - Doctor blades
• B29C 64/209 - Heads; Nozzles
• B29C 64/30 - Auxiliary operations or equipment
• B29C 64/245 - Platforms or substrates
• B29C 64/227 - Driving means

Abstract

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).

IPC Classes  ?

• B41F 15/08 - Machines

Abstract

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.

IPC Classes  ?

• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
• B29C 64/214 - Doctor blades
• B29C 64/209 - Heads; Nozzles
• B29C 64/30 - Auxiliary operations or equipment
• B29C 64/245 - Platforms or substrates
• B29C 64/227 - Driving means