US 5,342,040 AGranted

Turning device for sheets of paper in a feed web

AssigneeMathias Bauerle GmbH

InventorWilhelm Markgraf

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Abstract

The present invention provides a device that makes possible to turn individual sheets of paper 3 by an angle of 90.degree. during their transport without a change in their direction of feed, arrow 8, even at high speeds of feed. In the device according to the present invention, a stopping roller 22 with a pressure ball 33, is driven opposite to the direction of feed, arrow 8 and is arranged directly in front of the taut side 23' of a conveyor belt 23 in the direction of feed, arrow 8. A longitudinal row of pressure balls 22-29 are in contact with the conveyor belt 23. A drive roller 34 is driven in the direction of feed, arrow 8, and is provided with a pressure ball 35 in contact with a higher contact pressure than the pressure ball 33 to the stopping 22. The driver roller 34 arranged laterally offset from the feed web center 38 and directly in front of the roller stopping roller 22.

Claims13

Dependent claims

A device for turning a sheet, the device comprising:

first feed means for feeding the sheet in a first orientation and in a feed direction;
a drive roller positioned downstream of said first feed means and on one side of the sheet, said drive roller having a rotating surface positioned adjacent the one side of the sheet and moving in said feed direction;
a drive pressure ball positioned on another side of the sheet opposite said one side, said drive pressure ball is biased against the sheet and said rotating surface of said drive roller;
a stopping roller positioned downstream of said drive roller on the one side of the sheet and spaced from said drive roller in a lateral direction perpendicular to said feed direction, said stopping roller having a rotating surface positioned adjacent the one side of the sheet;
a stopping pressure ball positioned on the another side of the sheet, said stopping pressure ball is biased against the sheet and said rotating surface of said stopping roller with a force less than a force of said drive pressure ball biased against the sheet;
second feed means positioned downstream of said stopping roller and for feeding the sheet in a second orientation and in said feed direction.

3 more elements

Dependencies are inferred from the claim text.