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    • 1. 发明授权
    • Electromagnetic actuator equipped with two return springs
    • 电磁执行器配有两个复位弹簧
    • US06265957B1
    • 2001-07-24
    • US09625500
    • 2000-07-26
    • Pierre BaginskiDaniel Rota
    • Pierre BaginskiDaniel Rota
    • H01F500
    • H01F7/1607H01F7/123H01F7/124H01H71/2454H01H71/2463
    • An electromagnetic actuator comprises a fixed magnetic circuit made of ferromagnetic material and a movable assembly designed to slide axially between a rest position and an active position. Two return springs bias the movable assembly to its rest position, the second spring having a greater stiffness than the first one. An excitation circuit generates a magnetic flux which is designed, in inrush mode, to move the movable assembly from its rest position to its active position and, in holding mode, is sufficient to hold the movable assembly in the active position. In a first part of the axial travel of the movable assembly from its rest position to its active position, the action of the first spring is preponderant, whereas in the remaining travel up to the active position, the action of the second spring is preponderant.
    • 电磁致动器包括由铁磁材料制成的固定磁路和设计成在静止位置和活动位置之间轴向滑动的可移动组件。 两个复位弹簧将可移动组件偏压到其静止位置,第二弹簧具有比第一弹簧更大的刚度。 励磁电路产生以涌流模式设计的磁通量,以将可移动组件从其静止位置移动到其活动位置,并且在保持模式下足以将可移动组件保持在活动位置。 在可移动组件从其静止位置到其主动位置的轴向运动的第一部分中,第一弹簧的作用是主要的,而在剩余行程中,直到活动位置,第二弹簧的作用是主要的。
    • 2. 发明授权
    • Rotating printing machine
    • 旋转印刷机
    • US5771805A
    • 1998-06-30
    • US797568
    • 1997-02-07
    • Jose BranasDaniel Rota
    • Jose BranasDaniel Rota
    • B41F13/12B41F13/00B41F13/008B41F13/14B41F33/08B41F33/14B41J13/14
    • B41F13/00B41F13/008B41F13/14B41P2213/734
    • A rotating printing machine comprises several printing stations with each station having a printing form cylinder being driven directly by an asynchronous vectorial electric motor controlled by an electronic circuit for monitoring and control of the angular position at a command value that changes over time and is received from a electronic calculating station for the synchronization of the stations with one another. Each of the printing cylinders has an axle connected to the axle of the rotor of the adjacent motor and the axle of the cylinder and motor can be moved in an axial translation for the correction of lateral registration of the printing forms of the cylinder. The machine includes an arrangement that reads the registration marks printed by each station and establish the possible lateral and longitudinal registration errors for each station, each lateral error is applied to the electrical control circuit of the electrical motor of the corresponding station to control the axial position of the common axle of the cylinder and rotor assembly and each longitudinal error is added directly to the cylinder position command of the corresponding station.
    • 旋转印刷机包括若干印刷台,每个印刷台具有由电子电路控制的异步矢量电动机直接驱动的印版,用于在随时间变化的命令值上监测和控制角位置,并从 电子计算站,用于使站之间彼此同步。 每个印刷滚筒具有连接到相邻马达的转子的轴的轴,并且圆柱体和马达的轴可以以轴向平移运动,以校正圆柱体的印刷形式的横向对准。 该机器包括读取每个站印刷的对准标记并建立每个站的可能的横向和纵向对准误差的装置,每个横向误差被施加到对应站的电动机的电气控制电路以控制轴向位置 的圆柱体和转子组件的公共轴,并且每个纵向误差直接添加到相应站的气缸位置指令。