Web-fed rotary printing press for rapid change in production
AssigneeMAN Roland Druckmaschinen AG
InventorsPeter Knauer, Josef Singler
Life of this patent
Estimating the term…
Abstract
The invention relates to a web-fed rotary printing press having a plurality of double printing units in which each of the printing units of the double printing units work together in the blanket--blanket method and each has its own drive. Transfer cylinders of each printing unit are driven independently. To permit a rapid change in production, both upon recto and verso printing, the transfer cylinders of the disconnectable double printing units are separable by eccentric bushings or swingable levers such that a web which passes through the printing press is conducted between them without being printed.
Claims8
A web-fed rotary printing press for high-speed production changes, comprising:
- a double printing unit through which a web is fed having first and second printing units mounted on opposing sides of the web, said first printing unit having a first transfer cylinder and a first form cylinder and said second printing unit having a second transfer cylinder and a second form cylinder;
- a first drive drivably connected to said first form cylinder and said first transfer cylinder and a second drive drivably connected to said second form cylinder and said second transfer cylinder;
- means for moving at least one of said first transfer cylinder and said second transfer cylinder between a connected position, whereat the first transfer cylinder and the second transfer cylinder are positioned for printing both sides of the web which passes therebetween using the blanket--blanket printing method, and a disconnected position, whereat the web passes between said first and second transfer cylinders without being printed, said disconnected position of said first and second transfer cylinders allowing a production change of the first printing unit and the second printing unit while the web passes therebetween;
- and
- said first and second transfer cylinders having journals and said means for moving comprising double eccentric bushings for receiving said journals such that rotation of said double eccentric bushings effects a movement of said first and second transfer cylinders between said connected and said disconnected position.
A web-fed rotary printing press for high-speed production changes, comprising:
- a double printing unit through which a web is fed having first and second printing units mounted on opposing sides of the web, said first printing unit having a first transfer cylinder and a first form cylinder and said second printing unit having a second transfer cylinder and a second form cylinder;
- and
- a first drive drivably connected to said first form cylinder and said first transfer cylinder and a second drive drivably connected to said second form cylinder and said second transfer cylinder;
- means for moving at least one of said first transfer cylinder and said second transfer cylinder between a connected position, whereat the first transfer cylinder and the second transfer cylinder are positioned for printing both sides of the web which passes therebetween using the blanket--blanket printing method, and a disconnected position, whereat the web passes between said first and second transfer cylinders without being printed, said disconnected position of said first and second transfer cylinders allowing a production change of the first printing unit and the second printing unit while the web passes therebetween, wherein said first and second transfer cylinders comprise journals and said means for moving comprises eccentrically mounted lever for receiving said journals, wherein rotation of said levers about the eccentric mounting effects a movement of said first and second transfer cylinders between said connected position and said disconnected position.
Dependencies are inferred from the claim text.