Device for the additive production of a three-dimensional object

1. An apparatus for additive manufacturing of a three-dimensional object by successive layer-by-layer selective illumination and selective solidification of construction material layers formed in a construction plane having a construction material that can be solidified by at least one energy beam, the apparatus comprising:

a housing structure;

an assembly arranged or formed on the housing structure of the apparatus, the assembly comprising:

a coating device configured for applying the construction material into the construction plane and for forming construction material layers to be solidified in the construction plane, the coating device comprising:

a first coating element;

a second coating element arranged adjacently to the first coating element; and

an application element disposed between the first coating element and the second coating element, wherein the application element is disposed in a defined position and orientation relative to the first coating element and the second coating element; and

an illumination device configured for the selective illumination of respective construction material layers formed in the construction plane by the coating device; and

a carrying device which comprises at least one carrying element that comprises the construction plane;

wherein each of the first and second coating elements is configured to apply a certain amount of construction material onto the construction plane laterally adjacent to the application element.

2. The apparatus of claim 1 , wherein the carrying element is movably supported in a horizontal movement plane relative to the assembly.

3. The apparatus of claim 1 , wherein the coating of a construction material onto the construction plane is performed:

with the first coating element when moving the carrying element from a first position towards a second position, and

with the second coating element when moving the carrying element from the second position towards the first position.

4. The apparatus of claim 3 , wherein the carrying element is formed on or in a movably supported modular housing structure of the carrying device, wherein the modular housing structure is movably supported in the horizontal movement plane relative to the assembly.

5. The apparatus of claim 4 , further comprising at least one drive unit that can be coupled with or is coupled with the modular housing structure of the carrying device or the carrying element, the at least one drive unit provided to create a driving force moving the modular housing structure or the carrying element in the horizontal movement plane relative to the assembly.

6. The apparatus of claim 1 , further comprising at least one of:

a suction device arranged or formed on the housing structure of the apparatus, the suction device provided for the suction of construction material loosened from a construction material layer related to the construction process and/or for the suction of process gases arising related to the construction process;

a smoothing and/or planarizing device firmly arranged or formed on the housing structure of the apparatus, which is provided for at least partially smoothing and/or planarizing a selectively solidified construction material layer; or

a detection device arranged or formed on the housing structure of the apparatus, which is provided for the detection of at least one detection variable describing the quality of a construction material layer that is to be solidified and/or is selectively solidified.

7. The apparatus of claim 1 , further comprising:

a reception structure attached to the housing structure of the apparatus, in which at least the coating device and the illumination device arranged or formed in a structurally integrated manner.

8. The apparatus of claim 7 , wherein the reception structure comprises a plurality of separate reception compartments, wherein respective functional elements associated with the coating device, and respective functional elements associated with the illumination device are arranged in said separate reception compartments respectively associated.

9. The apparatus of claim 8 , wherein respective reception compartments are removably connected with each other during forming the reception structure.

10. The apparatus of claim 1 , wherein the illumination device comprises a plurality of illumination elements respectively provided for the generation of an energy beam for the selective illumination of a construction material layer to be selectively solidified, wherein

the coating device is arranged or formed between a first number of illumination elements, and a second number of illumination elements.

11. The apparatus of claim 1 , wherein the coating device comprises a plurality of coating elements adjacently arranged, and at least one further application element, wherein the at least one further application element is provided to apply a certain amount of construction material between at least two of the plurality of coating elements onto the construction plane.

12. The apparatus of claim 11 , wherein the plurality of coating elements are arranged at a defined position relative to the construction plane.

13. The apparatus of claim 1 , wherein the carrying element is supported vertically movably.

14. The apparatus of claim 1 , wherein at least the carrying element of the housing structure of the device is vibration-isolated.

15. The apparatus of claim 1 , further comprising a supply device associated with the coating device, wherein the supply device can be connected with or is connected with the coating device such that a certain amount of construction material can be continuously or discontinuously supplied to the coating device via the supply device.