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1. 发明授权

US5127324A Adjustment apparatus with DC drive system for use in a printing press 失效
标题翻译：带有直流驱动系统的调节装置，用于印刷机
公开(公告)号：US5127324A
公开(公告)日：1992-07-07
申请号：US609706
申请日：1990-11-06
申请人： Ronald T. Palmatier , Glenn A. Guaraldi
发明人： Ronald T. Palmatier , Glenn A. Guaraldi
IPC分类号： B41F13/14 , B65H23/188
CPC分类号： B41F13/14 , B65H23/1882
摘要： A plate cylinder of an offset printing press is adjustable. A motor has an output shaft operatively connected with the plate cylinder to, when driven, adjust the position of the plate cylinder. A tachometer provides a speed reference signal indicative of the rotational speed of the plate cylinder. A register mark error sensor provides an adjustment control signal indicating that the plate cylinder should be adjusted. A computer responds to the speed reference signal and the adjustment control signal to control a DC drive. The DC drive drives the motor at a speed which varies with the rotational speed of the plate cylinder. The plate cylinder is thereby moved to a desired position at a rate which is a function of the operating speed of the printing press. The plate cylinder is moved to the desired position at a slow rate when the printing press is operating at a slow speed and at a fast rate when the printing press is operating at a fast speed. By moving the plate cylinder to the desired position at a rate which varies with the operating speed of the printing press in this manner, the plate cylinder is adjusted a constant angular distance for each revolution of the plate cylinder.
摘要翻译：胶版印刷机的印版滚筒是可调节的。马达具有与印版滚筒可操作地连接的输出轴，当被驱动时，调节印版滚筒的位置。转速计提供表示印版滚筒转速的速度参考信号。寄存器标记误差传感器提供一个调节控制信号，指示印版滚筒应该被调整。计算机响应速度参考信号和调整控制信号来控制直流驱动。直流驱动以随着印版滚筒转速变化的速度驱动电机。印版滚筒因此以与印刷机的操作速度相关联的速率移动到期望的位置。当印刷机以快速的速度操作，并且当印刷机以快速的速度运行时，印版滚筒以低速移动到所需位置。通过以这种方式以印刷机的操作速度变化的速度将印版滚筒移动到期望的位置，印版滚筒对印版滚筒的每转一周调整恒定的角距离。

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