Apparatus and method for aligning sheets
US4615520A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1984 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Mar 26, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H9/105
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for aligning sheets fed by a sheet feeder to a sheet-processing machine includes a suction pull bar located in an aligning region of the sheet feeder, drive device for reciprocatingly displacing the suction pull bar in the plane of a sheet transversely to sheet travel direction through the sheet feeder, air control device through which the drive device is connected to a vacuum generator, positioning device for controlling the drive device the suction pull bar being acuatable for applying suction to the underside of a sheet which has reached the aligning region and after the sheet has been aligned by the leading edge thereof, the suction bar being actuatable for moving the sheet into an in-register side position and having device for applying fresh air thereto for releasing the sheet exactly in the side position simultaneously with a take-over of the sheet-in register by the sheet conveying device and a method for operating the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.