US 5,470,388 AGranted

Device for the vacuum coating of mass produced products

AssigneeFraunhofer-Gesellschaft Zur Foederung der angewandten Porschung e.V.

InventorsKlaus Goedicke, Christoph Metzner, Joerg Schmidt, Ullrich Heisig, Siegfried Schiller, Jonathan Reschke

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Abstract

Device for the vacuum coating of mass produced products. By means of the ice small parts, such as screws and bolts, as mass produced products are highly productively coated by vacuum deposition or sputtering, also under plasma action. In a container is located a drum rotatable at high speed about its horizontal axis and in which the parts to be coated are fixed to the inner wall by centrifugal force. The surface of the inner wall is geometrically constructed such that the parts to be coated are reliably held and moved with it. The coating devices are located in the drum. A stripping device, whose spacing with respect to the inner wall is adjustable at programmable time intervals, is located in the drum and has an abutment surface directed opposite to the rotation direction.

Claims15

Dependent claims

Device for the vacuum coating of mass produced products by evaporation, sputtering or plasma-activated coating, comprising:

a drum rotating constantly about its horizontal axis at such a speed that the parts located for coating purposes within said drum are held by centrifugal force on an inner wall of said drum, said drum having at least one coating device and at least one flow resistance, wherein a surface structure of the inner wall is geometrically constructed such that the parts to be coated are reliably fixed in the rotation direction of the drum and are movable with the drum;
a stripping device in said drum, the stripping device being adjustably spaced with respect to the inner wall of the drum, the stripping device being switchable off at programmable time intervals for the parts to be coated and having an abutting surface directed opposite to the rotation direction of the drum.

Dependencies are inferred from the claim text.