Device for correcting the register of sheet overprints in a sheet-fed rotary printing machine
US5176079A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Jan 5, 1993 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F21/05
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Device for correcting the register of a sheet-overprint and for compensating for a distorted sheet in a sheet-fed rotary printing machine by deforming the leading edge of the sheet on a travel path thereof before the leading edge enters a printing unit, including an adjustable bending device for bending, in rhythm with a printing cycle of the machine, a support beam extending transversely to the travel path of the sheet and carrying a plurality of mutually adjacent sheet grippers, includes a pregripper device for executing swinging movements about a stationary axis and an axis adjustable into a given position, respectively, the pregripper device including a gripper fly forming the support beam for the sheet grippers, and respective rigid levers supporting the gripper fly at least at both ends thereof on a gripper-fly shaft, the bending device being cooperatively engageable with the pergripper device and being formed of a single adjustable deforming stop disposed substantially midway between the respective ends of the gripper fly and fixed to a frame of the machine, the bending device and theh pregripper device, except for the sheet gripper thereof, being located below the sheet tra…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.