System and method for folding printed sheets
US9708150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Mar 5, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2406/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for folding print sheets includes two folding rollers arranged on one side of a guide plane to define a folding gap. A compressed air device is arranged on the other side of the guide plane in a region of the folding gap. The compressed air device is connected to the compressed air source and to the control unit, and includes an exit opening for the compressed air that is focused onto the folding gap. Control elements can be activated by the control unit to change the time interval during which the at least one exit opening is admitted with compressed air, and/or the cross-sectional surface of the exit opening, and the pressure of the compressed air supplied to the exit opening may also be changed by a different control element, to adapt a compressed air blast to properties of the print sheet made available to the folding gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.