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US 2021/0229316 A1Published application
Levelling device for materials in powder or granule form
AssigneeSystem Ceramics S.P.A.
InventorsFRANCO GOZZI, IVAN GHIRELLI, FRANCO STEFANI
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Abstract
Levelling device for materials in powder or granule form, comprising: a rest plane (2), mobile in advancement along a longitudinal direction (X) and predisposed to transport a layer (L) having a thickness (S) of material in powder or granule form. The device comprises a leveller (5,6), positioned above the rest plane (2).
Claims14
1) A levelling device for materials in powder or granule form, comprising:
- a rest plane (2), predisposed to receive at least a layer (L) of material in powder or granule form having a thickness (S);
- characterised in that:
- it comprises a leveller (5, 6) positioned above the rest plane (2);
- the rest plane (2) and the leveller (5, 6) are mobile in relation to one another along a longitudinal direction (X);
- the leveller (5, 6) is provided with a first element (5), arranged at a first height (H1) that is lower than the thickness (S) of the layer (L), which is predisposed to interfere with a surface layer (L1) of the layer (L) and to lift the surface layer (L1) to a height that is greater than the thickness (S) thereof without forming an accumulation of material;
- the leveller (5, 6) is provided with a second element (6), positioned downstream of the first element (5) and located at a second height (H2) so as to interfere with the surface layer (L1).
3 more elements
12) A method for spreading a layer of material in powder or granule form, comprising the following steps:
- spreading a layer (L) having a thickness (S) of material in powder or granule form on a rest plane (2);
- arranging a first element (5), positioned at a first height (H1) that is lower than the thickness (S) of the layer (L);
- arranging a second element (6) at a second height (H2) that is greater than or equal to the first height (H1);
- activating, with a relative sliding motion along a longitudinal direction (X), the rest plane (2) and the first and second element (5, 6);
- raising a surface layer (L1) of a predetermined thickness from the layer (L) by means of the first element (5);
- levelling the surface layer (L1) by means of the second element (6).
3 more elements
Dependencies are inferred from the claim text.