Machine for rolling and curving printing plates
US3937052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1975 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | Jan 29, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D5/143
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine for rolling and curving a metal backed rubber printing plate to conform it to the circumference of a printing cylinder. The machine includes a deflection bar having a longitudinal groove therein which accommodates and partly recesses a forming roller of small diameter. The bar is supported between a pair of clamping blocks which are pivotally mounted, means being provided to simultaneously swing the blocks to a predetermined degree to bow the bar and the roller held thereby. Cooperating with the forming roller is a large diameter driven roller of elastomeric material whose position relative to the forming roller is adjustable to define a nip for receiving the plate to be curved and for pressing the plate against the forming roller as it is conveyed through the nip to impart a desired curvature thereto, the bow formation of the forming roller producing a radius of curvature in the plate which gradually increases as one goes from the center to the outer edge thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.