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    Arrangement for measuring a deviation from its line of a movable web of foil
    1.
    发明授权
    Arrangement for measuring a deviation from its line of a movable web of foil 失效
    用于测量与其可移动腹板的线的偏差的布置

    公开(公告)号：US5047651A

    公开(公告)日：1991-09-10

    申请号：US499949

    申请日：1990-03-27

    申请人： Michael Wessner ,  Daniel Holliger

    发明人： Michael Wessner ,  Daniel Holliger

    IPC分类号： G01B11/00 ,  B65H23/02 ,  G01B11/04 ,  G01D5/34 ,  G01D5/38

    CPC分类号： B65H23/0216 ,  G01D5/342 ,  G01D5/38

    摘要： The arrangement comprises a tracking sensor with a light source, an optical means and a receiver with two photosensitive detectors, as well as a measuring apparatus with a computing unit. The optical means focuses light to provide a beam which falls on a moving web of foil. The tracking sensor may, for example, be installed in a re-winding installation, and during re-winding of the web, senses by means of the beam a marking track which is embossed in the web in the longitudinal direction of the web and which is composed of two different diffraction grating tracks. Each diffraction grating track projects the light diffracted therefrom in a predetermined direction of incidence to a respective detector. The sensed signals supplied by the receiver are converted into a difference signal by the measuring apparatus, and processed to provide correction signals which are supplied to a control means of the re-winding installation in order to compensate for lateral deviation of the moving web of foil.

    摘要翻译： 该装置包括具有光源的跟踪传感器，具有两个光敏检测器的光学装置和接收器，以及具有计算单元的测量装置。 光学装置聚焦光线以提供落在箔的移动幅材上的光束。 跟踪传感器可以例如安装在再卷绕装置中，并且在卷筒纸的重新卷绕期间，通过梁感测沿着幅材的纵向方向在幅材上压花的标记轨道，并且 由两个不同的衍射光栅轨道组成。 每个衍射光栅将从其衍射的光以预定的入射方向投射到相应的检测器。 由接收机提供的感测信号由测量装置转换成差信号，并进行处理以提供校正信号，该校正信号被提供给再卷绕装置的控制装置，以便补偿移动的箔片的横向偏移 。