Device and method for constructing a laminar body comprising at least one position-adjustable body defining the working area

US9649812B2 · kind B2 · utility

Assignee

• VOXELJET AG · DE

Inventors

• Andreas Hartmann · Stadtbergen, DE
• Dominik Schmid · Augsburg, DE

Key dates

• Filing date: Dec 21, 2015
• Grant date: May 16, 2017
• Expiry date: Dec 21, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2509/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a device (13) for constructing a laminar body (5) from a plurality of superimposed layers of free-flowing material, in particular particulate material, an a build platform (6) within a working area (11). The layers are solidified in locally predetermined regions by the actions of binders and are joined together so that at least one molded body (4) is formed by the solidified and joined regions of the layers. The device comprises a discharging device (1) movable back and forth over the working area (11) in at least one discharge direction and having at least one discharge opening (14) from which the free-flowing material can be discharged in individual superimposed layers during the movement of the discharging device (1). According to the invention at least one body (8, 8a) defining the working area (11) in at least one discharge direction of the discharging device (1) and the build platform (6) are adjustable vertically relative to each other in accordance with the specific progress with which the laminar body (5) is being constructed, in such a manner that a surface of the at least one body (8, 8a) facing the discharge opening (14) is aligned flush with a …