HEATSET WEB PRESSES -- A Heat Wave
"The trend will be for [press] manufacturers to concentrate on the extremes of the market," Kerns contends. "There seems to be a wide spread between the 2,000 and 3,000 fpm presses and the 30,000 iph designs. Quite often, the mid-size printers get left out of the new development circle."
Web Press Setups
(Editor's Note: The following was contributed by Roger Cross, project manager for OASIS Alignment Services, Rochester, NH.)
As with nearly all modern high-speed precision machinery, the webfed offset press will benefit from less installation time, easier startups, and more long-term trouble free operation if optical tooling methodology applied by trained alignment technicians is utilized during the press line installation and setup.
Offering the ability to guarantee alignment tolerances of as little as two arc-seconds (approximately 0.002" over 1757) for level, parallelism and perpendicularity, optical tooling methodology is very beneficial in nearly all phases of the physical installation of the press line, including:
- The initial layout and positioning of monuments for the true machine centerline, an offset parallel representation of the centerline and any cross-machine reference lines that are deemed necessary.
- Precise positioning and leveling to specified elevations of base-plates or sub-frames, where applicable.
- Accurate positioning of individual components with respect to machine direction and cross-machine direction.
- Provides for precise control of the level, plumb and perpendicularity of individual component framework.
- Utilizes a single common reference form which all components are aligned.
- Eliminates the possibility of creating a parallelogram effect in the line.
- Eliminates the "build-up" of error commonly associated with mechanical tramming methods.
- Properly documented alignment data is valuable for use in troubleshooting press line problems in the future.
"Web printers will continue to require press technology that allows more versatility, more product personalization, faster productivity and lower costs."