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    • 4. 发明公开
    • Registration system for a variable repeat press
    • 注册系统Wiederholungen
    • EP2752296A1
    • 2014-07-09
    • EP13199743.9
    • 2013-12-30
    • Goss International Americas, Inc.
    • Caron, Glen RogerGentle, Brian Joseph
    • B41F7/04B41F13/004B41F13/14B65H23/188B65H23/192
    • B41F13/025B41F7/04B41F13/0045B41F13/14B41P2213/90B41P2233/13B65H16/026B65H18/103B65H2220/01B65H2220/03B65H2401/2311B65H2511/10B65H2511/11B65H2511/212B65H2557/24B65H2220/11B65H2220/02
    • A method for phase adjusting a plurality of printing units in a variable format printing press is provided which includes for each of the plurality of printing units (P1 to Pn), determine an angular position (MBPos x ) of a motor shaft of the motor driving the blanket cylinder of the printing unit when a plate edge of a plate mounted on the plate cylinder of the printing unit is in a nip formed between the plate cylinder and blanket cylinder of the printing unit, and for each of the printing units P2 to Pn, phase adjusting MBPos x relative to MBPos 1 so that when edge E1 reaches a nip between the blanket cylinder and impression cylinder of printing unit Px, edge E x is printed on the web. The step of phase adjusting includes calculating a number of stretched images between Px and P1, as a function of a nominal repeat length, a substate modulus of the web, a web tension, and a distance between printing unit Px and printing unit P1; and based on the calculating step, calculating an phase adjusted angular position PMBPos x of the motor shaft of the motor driving the blanket cylinder of the printing unit Px when the motor shaft of the motor driving the blanket cylinder of the printing unit P1 is MBPos 1 ; and rotating the blanket cylinders to reflect these relative positions.
    • 提供了一种用于在可变格式印刷机中相位调整多个印刷单元的方法,其包括用于多个印刷单元(P1至Pn)中的每一个,确定电动机驱动的电动机轴的角位置(MBPos x) 当安装在印刷单元的印版滚筒上的板的板边缘处于形成在印版单元的印版滚筒和橡皮布滚筒之间的辊隙中时,印刷单元的橡皮布滚筒,并且对于每个印刷单元P2至Pn ,相对于MBPos 1相位调整MBPos x,使得当边缘E1到达印刷单元Px的橡皮滚筒和压印滚筒之间的辊隙时,边缘E x被印刷在卷材上。 相位调整的步骤包括根据标称重复长度,幅材的子状态模量,幅材张力以及印刷单元Px和印刷单元P1之间的距离来计算Px和P1之间的拉伸图像的数量; 并且基于计算步骤,当驱动打印单元P1的橡皮布滚筒的马达的马达轴为MBPos 1时,计算驱动打印单元Px的橡皮布滚筒的马达的马达轴的相位调整角位置PMBPos x ; 并旋转橡皮布滚筒以反映这些相对位置。