Spreader roll

Patent metadata

Field	Value
Publication number	US-2016333522-A1
Application number	US-201515111333-A
Country	US
Kind code	A1
Filing date	Jan 9, 2015
Priority date	Jan 13, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A spreader roll has a stationary shaft mounted at both ends and running in a curve. A roll shell is supported on the shaft. The construction is simplified in that said roll shell is rotatably mounted, is formed of a flexible material and is supported on the shaft via a lubricating fluid film.

First claim

1 - 15 . (canceled)

16 . A spreader roll, comprising:
a stationary, non-rotatable shaft mounted at both ends and having an arced shape; a rotatably mounted roll shell supported on said shaft, said roll shell being formed of a flexible material and being supported directly on a lubricating fluid film on said shaft.

17 . The spreader roll according to claim 16 , wherein said roll shell is coupled to a drive.

18 . The spreader roll according to claim 16 , wherein said roll shell is supported on said shaft via the fluid film over a substantial part of its axial extent, preferably over the entire axial extent.

19 . The spreader roll according to claim 16 , wherein said shaft is formed with a plurality of fluid feeds for said fluid film, and said fluid feeds are spaced apart axially from one another.

20 . The spreader roll according to claim 16 , wherein said fluid film has a thickness between 0.05 mm and 5 mm.

21 . The spreader roll according to claim 20 , wherein said fluid film has a thickness between 0.1 mm and 5 mm.

22 . The spreader roll according to claim 19 , wherein said shaft is supported on a bearing and said fluid feeds are supplied with the same lubricating fluid as the bearing of said shaft.

23 . The spreader roll according to claim 16 , wherein said shaft has a position that is displaceable in the circumferential direction.

24 . The spreader roll according to claim 16 , wherein said shaft is supported on bearings and said bearings include a seal for the lubricating fluid gap between said shaft and said roll shell.

25 . The spreader roll according to claim 16 , wherein said roll shell consists of a plastic.

26 . The spreader roll according to claim 25 , wherein said roll shell consists of a plastic selected from the group consisting of polyurethane and rubber.

27 . The spreader roll according to claim 25 , wherein said roll shell includes reinforcing elements.

28 . The spreader roll according to claim 27 , wherein said reinforcing elements are fibers or fabrics.

29 . The spreader roll according to claim 16 , wherein said roll shell has an inside that is roughened or profiled.

30 . The spreader roll according to claim 29 , wherein said inside of said roll shell has an axially pronounced structure or axially pronounced structural elements.

31 . The spreader roll according to claim 29 , wherein said inside of said roll shell is formed with axially extending grooves.

32 . The spreader roll according to claim 16 , wherein said roll shell has an inside surface that is smooth.

33 . The spreader roll according to claim 16 , wherein said lubricating fluid is a lubricating oil.

34 . The spreader roll according to claim 16 , wherein said lubricating fluid is pressurized air.

35 . The spreader roll according to claim 16 , wherein said stationary shaft is formed of a one-piece structure.

Assignees

• Voith Patent Gmbh

Inventors

• Honold Jochen
• Erkelenz Marc

Classifications

• B65H2404/131

  shape · CPC title

• B65H2404/136

  with canals · CPC title

• F16C13/003

  Bowed or curved rolls (rollers with a bowed axis as tentering devices for tensioning, smoothing or guiding webs B65H23/0258) · CPC title

• B65H2701/173

  Metal · CPC title

• D21F1/40 Primary

  Rolls · CPC title