A coating device arrangement 1 for a 3D printer is described, comprising a coating device 3 having a container 17 defining an inner cavity for receiving particulate construction material, which leads to an opening for outputting the particulate construction material onto a construction field, as well as a closing device 31 configured to selectively close the opening for outputting the particulate construction material.

A coating device arrangement 1 for a 3D printer is described, comprising a coating device 3 having a container 17 defining an inner cavity for receiving particulate construction material, which leads to an opening for outputting the particulate construction material onto a construction field, as well as a closing device 31 configured to selectively close the opening for outputting the particulate construction material.

Arrangement and method for generating a layer of a particulate building material in a 3D printer in which a quantity of applied material is increased while keeping the quality constant and forces acting on the construction site during application, smoothing and compacting of the particulate building material is reduced. The arrangement includes: a first assembly having a device for applying the particulate building material to a construction site moveable thereover; a second assembly spatially separate from the first assembly and which has a device for smoothing the applied particulate building material. In terms of the method: in a first step, applying the particulate building material to the construction site with the arrangement above and movable over the construction site; and in a second step, following in time and independent of the first step, smoothing the applied particulate building material, the first and second steps performed in a single movement.

Arrangement and method for generating a layer of a particulate building material in a 3D printer in which a quantity of applied material is increased while keeping the quality constant and forces acting on the construction site during application, smoothing and compacting of the particulate building material is reduced. The arrangement includes: a first assembly having a device for applying the particulate building material to a construction site moveable thereover; a second assembly spatially separate from the first assembly and which has a device for smoothing the applied particulate building material. In terms of the method: in a first step, applying the particulate building material to the construction site with the arrangement above and movable over the construction site; and in a second step, following in time and independent of the first step, smoothing the applied particulate building material, the first and second steps performed in a single movement.

A printing apparatus for printing a three-dimensional object comprising an operative surface, at least one supply hopper for depositing layers of powder onto the operative surface and an energy source for emitting at least one energy beam onto the layers of powder. The supply hopper and energy source are configured such that when a topmost layer of powder is being deposited onto an underlying layer of powder on the operative surface, the direction travelled by the supply hopper when depositing the topmost layer is different to the direction travelled by the supply hopper when depositing the underlying layer, and at least one energy beam is emitted onto the topmost layer and at least one further energy beam is emitted onto the underlying layer, simultaneously, to melt, fuse or sinter the topmost and underlying layers.

The invention relates to a device and to a method for producing 3D moulded parts, wherein a preheating container is used.

The invention relates to a device and to a method for producing 3D moulded parts, wherein a preheating container is used.

A method for making an object and an apparatus for making the object in accordance with the method is disclosed. A section of the object is formed by irradiating a layer of material with a radiation, the layer of material being disposed on a material receiving surface of a flexible element shaped by a shaping member contacting the flexible element. The radiation passes through the member and the flexible element. The member is tilted to induce a peeling separation of the member from the element.

A method for making an object and an apparatus for making the object in accordance with the method is disclosed. A section of the object is formed by irradiating a layer of material with a radiation, the layer of material being disposed on a material receiving surface of a flexible element shaped by a shaping member contacting the flexible element. The radiation passes through the member and the flexible element. The member is tilted to induce a peeling separation of the member from the element.

A method of additively manufacturing an object includes steps of: (1) successively forming a plurality of powder layers by depositing powder; (2) selectively controlling a composition of the powder that forms each one of the plurality of powder layers; and (3) successively forming a plurality of object layers of the object by joining the powder of a portion of each one of the plurality of powder layers before forming each successive one of the plurality of powder layers.