Cleaning apparatus for impression cylinder of offset sheet-fed press
US5117754A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41P2235/31
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An offset sheet-fed press is provided with a cleaning apparatus for an impression cylinder. The cleaning apparatus includes a cleaning unit which includes a frame member, a magazine roll provided with a spring brake for a cleaning cloth, a wind-up roll for winding up the cleaning cloth while stepwisely transferring the cleaning cloth by a wind-up torque motor, guide rolls for guiding the cleaning cloth so that the cleaning cloth faces the outer surface of the impression cylinder between the magazine roll and the wind-up roll, and a plurality of air cylinders arranged in parallel and disposed on the rear surface side of the cleaning cloth facing the impression cylinder. The cleaning unit further includes a cleaning cloth press assembly provided with a linear press blade linerally pressing the cleaning cloth against the impression cylinder on the side of the magazine roll, a plate-like guide disposed on the side of the wind-up roll and a surface press pad pressing the surface of the impression cylinder. The surface press pad is disposed between the blade and the plate-like guide. The air cylinder acts to move the cleaning cloth press assembly along a substantially U-shaped guide so t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.