Elastic Support of Printing Presses

Transcription

1 Elastic Support of Printing Presses

2 Elastic Support of Printing Presses Typical Spring Unit with Viscodamper Owing to their high-speed rolls, rotary printing presses cause vibrations In the machine itself as well as in its foundation. Therefore, in many cases right up to the present a large concrete foundation is foreseen which can be placed on piles should the subsoil be unsatisfactory. Settling and torsion of the foundation and thereby of the machine as a result of these vibrations are supposed to be kept to a minimum through these measures. To isolate high-frequency structureborne noise, some pad materials are also sometimes used although these are only slightly elastic. Even with theses precautionary means, however, settling cannot be strictly ruled out. Besides, inadmissible vibrations can be transferred via the foundation into the surroundings and may there affect the plant personnel and the environment. In extreme cases the vibrations can even be damaging to parts of the plant building. In order to prevent these effects it is necessary that a dynamic uncoupling be made between the machine and the building itself by means of an elastic support. GERB spring units in combination with Viscodampers are especially well suited for this: Owing to the uncoupling with a high vibration-isolating effect between machine and structure, the subsoil is only statically loaded. Settling as a result of machine vibrations is ruled out. Settling which is externally caused can be quickly and easily counteracted at any time with highly elastic support. For this purpose GERB spring elements are made prestressable so that with the help of small hydraulic jacks inserted into the spring elements, steel shims can easily be put into the gap between the compressed spring element and the spring-supported machine. Elastic Support of Printing Presses (Principles)

3 Printing Press (Picture: Koenig & Bauer AG) GERB spring elements and Viscodampers provide printing machines with excellent protection against the effects of earthquakes. By means of electronic equipment the printing machine and the foundation can be monitored giving an indication of the machine s wear and tear. Smaller printing machines can be mounted right on a spring supported steel frame or a spring-cushioned platform. Finally, it is possible to integrate an entire floor area complete with spring-mounted presses into the building structure so that construction cost is reduced and valuable space is gained beneath the machines. In all of these cases the transfer of vibrations into the building is prevented by the spring support. Foundation System of a KBA Printing Press Vibration measurements of elastically supported printing machines have shown that with this kind of support the acceleration values in the machine are lower than with conventional support. Since these reduced accelerations are a measure of the machine s wear, one can simultaneously assume that the lowered accelerations mean prolonged lifetime of the machine and lower maintenance costs. Spring Support of a KBA Printing Press The transfer of structure borne noise is prevented by the dynamic separation of the machine from the building itself. So the noise level caused by the machine is correspondingly reduced in the adjacent rooms.

4 Printing Press (Picture: manroland AG) Spring elements and Viscodampers are selected according to the machine data and the conditions of the surroundings. The cylindrical coil springs as well as all parts of the casings are given high-quality corrosion protection at the factory. GERB has its own engineering division for static and dynamic analysis and if desired for the formwork and reinforcement drawings of the foundation including bar bending lists. GERB s assembly division can independently carry out the installation of the spring elements and Viscodampers. Preliminary construction measures on site are therefore unnecessary. For assistance in solving your vibration problems and recommendations for installation of all types of printing machines you are invited to contact our engineers in the GERB office nearest to you. Spring Support of a manroland Printing Press GERB offers: Design of the foundation for your printing press. Supply of all construction documents. Supervision of construction work (optional). Supply of spring units and Viscodampers Installation and adjustment of the spring support. MAN Roland Rotary Printing Press Spring Supported Foundation Block (Length: 150 m)

5 Elastic Support of Printing Presses Reference List (Excerpt) Country Place of Client Manufacturer Machine Type Installation Belgium Brussels Sofadi MAN-Roland COLORMAN 35 Brussels Het Laatste Nieuws MAN-Roland COLORMAN 35 Bulgaria Sofia Rabotnitschesko Delo MAN-Roland COLORMAN 35 Sofia Zeitungsgruppe Bulgarien MAN-Roland GEOMAN Sofia Economedia KBA EXPRESS 60 France Bondoufle Imprimerie Nationale Heidelberg Harris M4000 Boulogne/Mer S.I.B. KBA Douai Imprimerie Nationale Harris Graphics M4000 Lille La Voix du Nord MAN-Roland 2 x COLORMAN Lille La Voix du Nord KBA W Paris Le Monde Wifag Strasbourg Dern. Nouvelles d Alsace Wifag OF7 Thann Burda Thann Cerutti Tours Nouv Rep du Centre Ouest Creusot Loire VISA Germany Ahrensburg Axel Springer Verlag MAN-Roland COLORMAN 35 Braunschweig Braunschweiger Zeitung MAN-Roland 2 x COLORMAN 35 Landau Pfälzische Verlagsanstalt Heidelberg-Harris HD-WEB 16 9 E/2DW Ludwigshafen Rheinpfalz Druckzentrum Albert 2 x WEB-FED Trier Trierischer Volksfreund MAN-Roland COLORMAN 40 Ireland Dublin The Irish Times MAN-Roland GEOMAN Israel Tel Aviv Yedioth Ahronoth MAN-Roland COLORMAN 35 Italy Moncaliero ILTE Heidelberg-Harris Malaysia Port Kelang The New Straits Times Goss URBANITE Mexico Mexico City Excelsior MAN-Roland COLORMAN 35 Singapore Singapore Singapore News MAN-Roland COLORMAN 35 Singapore Singapore News Goss URBANITE Spain Bilbao Diario Deia MAN-Roland UNIMAN 4/2 Cadiz Diario de Cadiz MAN-Roland UNIMAN 4/2 S Madrid Marca MAN-Roland UNIMAN 4/2 Madrid Diario 16 Rockwell VISA Madrid Marca Harris M 845 A Malaga Diario Sur MAN-Roland UNIMAN 4/2 S Sevilla Marca MAN-Roland UNIMAN 4/2 S Tenerife Marca Mitsubishi Switzerland Lyss Schwab-Druck Heidelberg Printmaster/Speedmaster Albert Albert 200 Taiwan Taipeh China Times Heidelberg-Harris Galaxy Taipeh China Times MAN-Roland Thailand Bangkok The Thairath Daily MAN-Roland UNIMAN 4/2 Bangkok The Thairath Daily MAN-Roland UNIMAN S 1092 Retrofit of a printing room (spring supported floor)

6 worldwide DRM_01 Layout: Sijades, Berlin Printed: Woeste, Essen For the design of the elastic support of a printing press please provide us with the following data: Manufacturer of printing press Type of printing press Layout drawing Total weight and weight distribution Any special requirement EQUITY SERVICES & SOLUTIONS CO.,LTD. 267/96-97, Sukhumvit Rd., Maptaphut, Mueng-rayong, Rayong, Thailand, Tel : Fax : Mobile : , LinkedIn : Manorom Chiewpanich manorom@esspower.com : sukhontaros@esspower.com EN ISO 9001 Certified Company