Mechanism for accurate-register sheet transfer and the transport of sheets between the printing units of a multi-color printing machine
US5267510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1992 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F21/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chain operated sheet transport and transfer mechanism for sheet-fed printing machines having a plurality of printing units. The chain operated mechanism includes a plurality of gripper cars affixed to chains for movement between the printing units. The gripper cars each have a gripper impact strip and a pivotable gripper finger, with the gripper strip of each car extending the width of the gripper car and being of concave configuration. A bending device at the transfer zone of each printing unit is operable for acting on the gripper car to bend the concave gripper impact strips straight in order that sheets are transferred from one printing unit to the other without register deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.