Spreader roll

Patent metadata

Field	Value
Publication number	US-9803318-B2
Application number	US-201515111333-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Jan 13, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

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

The invention claimed is:

1. 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 and extending along substantially an entire length of said shaft between the ends thereof, said roll shell being formed of a flexible plastic material and being supported directly on a lubricating fluid film on said shaft.

2. The spreader roll according to claim 1 , wherein said roll shell is coupled to a drive.

3. The spreader roll according to claim 1 , 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.

4. The spreader roll according to claim 1 , 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.

5. The spreader roll according to claim 4 , 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.

6. The spreader roll according to claim 1 , wherein said fluid film has a thickness between 0.05 mm and 5 mm.

7. The spreader roll according to claim 6 , wherein said fluid film has a thickness between 0.1 mm and 5 mm.

8. The spreader roll according to claim 1 , wherein said shaft has a position that is displaceable in the circumferential direction.

9. The spreader roll according to claim 1 , 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.

10. The spreader roll according to claim 1 , wherein said roll shell consists of a plastic selected from the group consisting of polyurethane and rubber.

11. The spreader roll according to claim 1 , wherein said roll shell includes reinforcing elements.

12. The spreader roll according to claim 11 , wherein said reinforcing elements are fibers or fabrics.

13. The spreader roll according to claim 1 , wherein said roll shell has an inside that is roughened or profiled.

14. The spreader roll according to claim 13 , wherein said inside of said roll shell has an axially pronounced structure or axially pronounced structural elements.

15. The spreader roll according to claim 13 , wherein said inside of said roll shell is formed with axially extending grooves.

16. The spreader roll according to claim 1 , wherein said roll shell has an inside surface that is smooth.

17. The spreader roll according to claim 1 , wherein said lubricating fluid is a lubricating oil.

18. The spreader roll according to claim 1 , wherein said lubricating fluid is pressurized air.

19. The spreader roll according to claim 1 , wherein said stationary shaft is formed of a one-piece structure.

20. 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 polyurethane or rubber material;
said shaft and said roll shell being disposed to form an annular gap therebetween;
a lubricating fluid forming a lubricating fluid film in said annular gap and directly supporting said roll shell on said shaft, said fluid film having a thickness between 0.1 mm and 5 mm; and
said shaft having a plurality of fluid feed openings formed therein for feeding the lubricating fluid into said annular gap.

Assignees

• Voith Patent Gmbh

Inventors

• Honold Jochen
• Erkelenz Marc

Classifications

• F16C13/003

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

• B65H23/0258

  with a bowed axis · CPC title

• B65H2701/173

  Metal · CPC title

• B65H2404/136

  with canals · CPC title

• D21F1/40 Primary

  Rolls · CPC title