Textile Machine Tool Part and Method for Producing a Textile Tool

Patent metadata

Field	Value
Publication number	US-2021245231-A1
Application number	US-201816635782-A
Country	US
Kind code	A1
Filing date	Jul 19, 2018
Priority date	Aug 3, 2017
Publication date	Aug 12, 2021
Grant date	—

Abstract

The invention relates to a textile machine tool part (11) that is used in textile processing in a textile machine and to a method for producing same. The textile machine tool part (11) has a tool core (16) made of a core material and is coated, at least in part, with a wear-resistant coating. The wear-resistant coating (17) is applied to a core surface (18) that has a first microstructure (19). The first microstructure (19) is preferably created using electrochemical etching in the core surface (18). The wear-resistant coating (17) applied thereto is preferably applied directly to at least a section of the core surface (18) having the first microstructure (19) using electrochemical deposition and has a layer thickness of a maximum of 20 μm.

First claim

1 . A textile machine tool part ( 11 ) having a tool core ( 16 ) that consists of a core material,
wherein the tool core ( 16 ) has a core surface ( 18 ) having a microstructure ( 19 ), at least in one section, wherein the core surface ( 18 ) having the microstructure ( 19 ) is coated, at least in part, with a wear-resistant coating ( 17 ) that has a layer thickness (d) of at most 20 μm and wherein the wear-resistant coating ( 17 ) also has a microstructure ( 22 ) due to the microstructure ( 19 ) of the core surface ( 18 ).

2 . The textile machine tool part according to claim 1 , characterized in that the layer thickness (d) of the wear-resistant coating ( 17 ) is at most 10 μm or at most 7 μm.

3 . The textile machine tool part according to claim 1 or 2 ,
characterized in that the layer thickness (d) of the wear-resistant coating ( 17 ) within a considered surface area of 1 mm 2 varies by a maximum of 1 μm.

4 . The textile machine tool part according to any of the preceding claims,
characterized in that the layer thickness (d) of the wear-resistant coating ( 17 ) is at least 2 μm.

5 . The textile machine tool part according to any of the preceding claims,
characterized in that the wear-resistant coating ( 17 ) is a chromium coating or a DLC coating or a carbidic coating or a nitridic coating.

6 . The textile machine tool part according to any of the preceding claims,
characterized in that the core material is formed from a metal material or a metal alloy.

7 . The textile machine tool part according to any of the preceding claims,
characterized in that the microstructure ( 19 ) of the core surface ( 18 ) and/or the microstructure ( 22 ) of the wear-resistant coating ( 17 ) has elevations ( 21 , 24 ) and depressions( 20 , 23 ), wherein the elevations ( 21 , 24 ) in the region of their maximum, and/or the depressions ( 20 , 23 ) in the region of their minimum, have an approximately spherical surface segment-shaped contour.

8 . The textile machine tool part according to claim 7 , characterized in that the radius (R 2 , R 4 ) of a spherical surface segment-shaped contour of a first or second elevation ( 21 , 24 ) is greater than the radius (R 1 , R 3 ) of a spherical surface segment-shaped contour of a first or second depression ( 20 , 23 ).

9 . A use of the textile machine tool part ( 10 ) according to any of the preceding claims in a textile machine during a method for producing or processing a textile material with at least one elastane yarn that comes into contact with the textile machine tool part ( 10 ).

10 . The use of the textile machine tool part ( 10 ) according to claim 9 ,
characterized in that the fineness of the at least one elastane yarn is at least 20 den or 22 dtex.

11 . The use of the textile machine tool part ( 10 ) according to claim 9 or 10 ,
characterized in that the fineness of the at least one elastane yarn is at most 40 den or 44 dtex.

12 . A method for producing a textile machine tool part having the following steps:
Production of a tool core ( 16 ) from a core material, Creation of a microstructure ( 19 ) in at least one section of the core surface ( 28 ) of the tool core ( 16 ), Coating of at least part of the core surface ( 18 ) having the microstructure ( 19 ) with a wear-resistant coating ( 17 ) that has a layer thickness (d) of at most 20 μm such that the wear-resistant coating ( 17 ), due to the microstructure ( 19 ) of the core surface ( 18 ), also has a microstructure ( 22 ).

13 . The method according to claim 12 ,
characterized in that the microstructure ( 19 ) is created in the core surface ( 18 ) using an electrochemical etching process.

14 . The method according to claim 12 or 13 ,
characterized in that the wear-resistant coating ( 17 ) is applied immediately after the microstructure ( 19 ) of the core surface ( 18 ) is created.

15 . The method according to any of claims 12 through 14 , characterized in that coating with the wear-resistant coating ( 17 ) is accomplished using electrochemical deposition.

Assignees

• Groz Beckert Kg

Inventors

• Buck Jochen
• Goller Thomas
• Beis Sven

Classifications

• C25D7/00

  Electroplating characterised by the article coated · CPC title

• B32B15/01

  all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} · CPC title

• B32B2307/538

  Roughness · CPC title

• B32B15/04

  comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} · CPC title

• C25D3/04

  of chromium · CPC title