Analysis of vibration of printing unit of offset printing press

• Autorzy: Krzyżkowski J. , Pyryev Y.
• Języki publikacji: EN

Abstrakty

EN

There are several causes of vibration of off set printing presses. Major are cyclic work of feeders and deliveries, gaps with mechanisms for fixing plate and blanket in cylinders of printing pair and inappropriate stress between those cylinders. All mentioned above causes increased exploitation of bearings, gears driving cylinders and other parts of the printing press. The consequences of vibration are also breaking of paper web and such artefacts as doubling and streaking on the prints. In this paper printing pair cylinders of lithographic printing press are described as a two-degree of freedom model. Solution of a system of differential equations, which describes this model shows influence of vibration of printing unit cylinders on the fluctuation of the ink film thickness on the prints (magnitude of streaking phenomenon).

Słowa kluczowe

EN

vibration; lithographic printing; offset printing; offset presses; printing unit; plate cylinder; blanket cylinder

• Wydawca: Foundation for Young Scientists
• Czasopismo: Challenges of Modern Technology
• Rocznik: 2011
• Tom: Vol. 2, no. 2
• Strony: 31--34
• Opis fizyczny: Bibliogr. 4 poz., rys., wykr.

Twórcy

autor

Krzyżkowski J.

• Warsaw University of Technology, Institute of Mechanics and Printing, Division of Graphic Art Technologies, Konwiktorska 2, 00-217 Warsaw, Poland

autor

Pyryev Y.

• Warsaw University of Technology, Institute of Mechanics and Printing, Division of Graphic Art Technologies, Konwiktorska 2, 00-217 Warsaw, Poland

Bibliografia

• [1] Kulikov G.B. “Diagnosing Causes of Increased Vibration of Printing Units of Tower Rotary Printing Machines”. Journal of Machinery Manufacture and Reliability 37.4(2008): 391–396.
• [2] Gao X. Schwingungen von Offsetdruckmaschienen. Chemnitz: TU Chemnitz (dissertation), 2001.
• [3] Rao Singiresu S. Mechanical vibration. Upper Saddle River: Pearson Prentice Hall, 2004.
• [4] Osiński Z. Teoria drgań. Warszawa: PWN, 1978.