Apparatus for additively manufacturing of three-dimensional objects

1. An apparatus ( 1 ) for additive manufacturing of three-dimensional objects ( 2 ) by successive, selective layer-by-layer exposure and thus solidification of construction material layers of a construction material ( 3 ) that can be solidified by an energy beam ( 5 ) generated by an energy beam generation device ( 4 ), comprising:

a frame construction ( 8 ) with at least one receiving section ( 9 ) for receiving a powder module ( 11 ) comprising a powder reception room ( 10 ), wherein the powder module ( 11 ) comprises a height-adjustable carrying element ( 12 ) configured to limit a bottom of the powder reception room ( 10 ),

an adjustment device ( 13 ) configured to adjust a height of the carrying element ( 12 ) of the powder module ( 11 ) moved into the receiving section ( 9 ), wherein the adjustment device ( 13 ) comprises at least one height-adjustable adjustment element assembly ( 14 ), which is provided in an operating position for adjusting the height of the carrying element ( 12 ) of the powder module ( 11 ), and

a lifting device ( 18 ), wherein the lifting device ( 18 ) comprises at least one lifting assembly ( 19 ), wherein the lifting assembly ( 19 ) comprises a first lifting element ( 20 ) configured to generate a first partial lifting moving the powder module ( 11 ) from a non-operating position into an operating position, and a second lifting element ( 21 ) configured to generate a second partial lifting moving the adjustment element assembly ( 14 ) from a non-operating position into an operating position, wherein the first lifting element ( 20 ) is coupled for movement with the second lifting element ( 21 ) via a power transmission element ( 22 ), such that the first partial lifting that can be generated or is generated via the first lifting element ( 20 ) and the second partial lifting that can be generated or is generated via the second lifting element ( 21 ) are configured to be carried out synchronously.

2. The apparatus according to claim 1 , characterized in that the first partial lifting that can be generated or is generated via the first lifting element ( 20 ) is smaller than the second partial lifting that can be generated or is generated via the second lifting element ( 21 ).

3. The apparatus according to claim 1 , characterized in that the first lifting element ( 20 ) can be coupled or is coupled with the powder module ( 11 ) and the second lifting element ( 21 ) can be coupled or is coupled with the adjustment element assembly ( 14 ).

4. The apparatus according to claim 1 , characterized in that the first lifting element ( 20 ) is movably supported between two end positions, wherein a first end position of the first lifting element ( 20 ) is assigned to the operating position of the powder module ( 11 ), and a second end position of the first lifting element ( 20 ) is assigned to the non-operating position of the powder module ( 11 ), and

the second lifting element ( 21 ) is movably supported between two end positions, wherein a first end position of the second lifting element ( 21 ) is assigned to the operating position of the adjustment element assembly ( 14 ), and a second end position of the second lifting element ( 21 ) is assigned to the non-operating position of the powder module ( 14 ).

5. The apparatus according to claim 4 , characterized in that the first lifting element ( 20 ) is formed as or comprises an, especially disk-shaped, control element ( 23 ) rotatably supported around a rotational axis (A), having a control surface ( 25 ) defining an, especially curve-like, trajectory ( 24 ) of a certain length, wherein the end positions of the first lifting element ( 20 ) are defined by the respective ends of the trajectory ( 24 ), and

the second lifting element ( 21 ) is formed as or comprises an, especially disk-shaped, control element ( 26 ) rotatably supported around a rotational axis (B), having a control surface ( 28 ) defining an, especially curve-like, trajectory ( 27 ) of a certain length, wherein the end positions of the second lifting element ( 21 ) are defined by the respective ends of the trajectory ( 27 ).

6. The apparatus according to claim 5 , characterized in that the control element ( 23 ) of the first lifting element ( 20 ) can be coupled or is coupled with the powder module ( 11 ) via an adjustment element ( 29 ) movably supported along the control surface ( 24 ), and the control element ( 26 ) of the second lifting element ( 21 ) can be coupled or is coupled with the adjustment element assembly ( 14 ) via an adjustment element ( 32 ) movably supported along the control surface ( 27 ).

7. The apparatus according to claim 1 , characterized by a lifting drive device ( 35 ) assigned to the at least one lifting assembly ( 19 ), which is provided for generating a lifting power realizing the respective partial liftings, wherein a lifting drive element ( 36 ) associated with the lifting drive device ( 35 ) is coupled with the power transmission element ( 22 ).

8. The apparatus according to claim 1 , characterized in that the lifting device ( 18 ) comprises several lifting assemblies ( 19 ), wherein a first pair of lifting assemblies ( 19 ), which are arranged laterally adjacent, is arranged or formed on a first frame construction element ( 38 ), especially a first wall of the frame construction ( 8 ), laterally limiting the receiving device ( 9 ), and a second pair of lifting assemblies ( 19 ), which are arranged laterally adjacent, is arranged or formed on a second frame construction element, especially a second wall of the frame construction ( 8 ), laterally limiting the receiving device ( 9 ), wherein the first frame construction element ( 38 ) is arranged opposite the second frame construction element.

9. The apparatus according to claim 7 , characterized in that to the first pair of lifting assemblies ( 19 ), which are arranged laterally adjacent, a common lifting drive device ( 35 ) is assigned, wherein the lifting drive element ( 36 ) associated with the lifting drive device ( 35 ) is coupled with both the power transmission element ( 22 ) of the first lifting assembly ( 19 ) and the power transmission element ( 22 ) of the second lifting assembly ( 19 ) of the first pair, and to the second pair of lifting assemblies ( 19 ), which are arranged laterally adjacent, a common lifting drive device ( 35 ) is assigned, wherein the lifting drive element ( 36 ) associated with the lifting drive device ( 35 ) is coupled with both the power transmission element ( 22 ) of the first lifting assembly ( 19 ) and the power transmission element of the second lifting assembly ( 19 ) of the second pair.

10. The apparatus according to claim 8 , characterized in that opposing second lifting elements ( 21 ) of the first and the second pair of lifting assemblies ( 19 ), which are arranged laterally adjacent, are coupled for movement via an, especially bar-shaped, coupling element connecting said elements.