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US 11,534,938 B2Granted
Levelling device for materials in powder or granule form
AssigneeSystem Ceramics S.P.A.
InventorsFranco Gozzi, Ivan Ghirelli, Franco Stefani
Life of this patent
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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).
Claims16
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 lifter (5) having a limited thickness in the direction perpendicular to the rest plane (2), the lifter (5) arranged at a first height (H1) that is lower than the thickness (S) of the layer (L), which is predisposed to interfere with the layer (L) so as to divide the layer into a base layer and a surface layer (LI) and to lift the surface layer (L1) away from the base layer to achieve a total height that is greater than the thickness (S) thereof;
- the leveller (5, 6) is provided with a distributor (6), positioned downstream of the lifter (5) and located at a second height (H2) so as to interfere with the lifted surface layer (L1) and to distribute the surface layer upon the base layer.
3 more elements
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 lifter (5), positioned at a first height (H1) that is lower than the thickness (S) of the layer (L);
- arranging a distributor (6) at a second height (H2) that is greater than or equal to the first height (H1), the lifter and the distributor forming a leveller;
- providing a relative sliding motion along a longitudinal direction (X) between the rest plane (2) and the leveller so that the lifter interferes with the layer and the lifter divides the layer into a surface layer (L1) of predetermined thickness and a base layer and lifts the surface layer away from the base layer, the surface layer passing above the lifter and the base layer passing below the lifter;
- levelling the surface layer (L1) by means of the distributor (6), wherein the distributor interferes with the lifted surface layer and distributes the surface layer upon the base layer, the surface layer passing below the distributor to contact the base layer.
2 more elements
Dependencies are inferred from the claim text.