Gripper opening/closing apparatus of sheet-fed rotary press
US4535691A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 1984 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | Sep 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2102
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A gripper opening/closing apparatus in a sheet-fed rotary printing press, the apparatus having a broadside printing cam and a perfecting cam which are commonly brought into contact with cam followers, and which are adjacent to each other to be coaxial with an impression cylinder, and the apparatus being arranged such that, in a broadside printing mode, grippers of the impression cylinder are opened/closed by the broadside printing cam to cause reversing grippers of a reversing cylinder to grip a leading end of a printed sheet gripped by the grippers of the impression cylinder, and that, in a perfecting mode, the grippers of the impression cylinder is opened/closed by the perfecting cam and the broadside printing cam to cause the reversing grippers of the reversing cylinder to grip a trailing end of the printed sheet gripped by the grippers of the impression cylinder, wherein a central angle of the impression cylinder which is formed between a sheet gripping position where the grippers of the impression cylinder grip the sheet from a preceding stage and a transfer position where the sheet is transferred from the grippers of the impression cylinder to the reversing grippers of the re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.