Web and transfer cutoff apparatus
    1.
    发明授权
    Web and transfer cutoff apparatus 失效
    网络和转移切断装置

    公开(公告)号:US4919352A

    公开(公告)日:1990-04-24

    申请号:US262453

    申请日:1988-10-25

    CPC classification number: B65H19/2215 B65H2408/23152

    Abstract: A web rewind unit includes a turret with spaced spindles and cores for receiving the web. A slide is mounted on the turret beneath the web moving over the core at the winding station. A knife bracket is pivotally secured to the slide. A power cylinder positions the slide between a web cut position and a retracted position. A pivot unit connects between the knife bracket and the main cylinder unit. A pneumatic cylinder loads the pivot unit. A stop unit is mounted to the machine frame and includes an adjustable member for establishing angular orientation of the cutting knife to accurately locate the knife with respect to the web during the cutting action. An air bar is mounted above the web path and moves down through the web as the knife pivots. The free web end of the web moves into the new core. The air bar includes a cam which engages a cam roller on the bracket and pivots the knife to cut the web. The timing is preferably such that as the knife moves to the cutting position, the air bar cylinder is operated and the cam coupled to the knife bracket is engaged by the pivoting air bar and the knife blade pivots and moves through the web. The air bar moves through the web in a direction opposite the knife. The air blast drives the free end of the web downwardly into a guide about the new core.

    Abstract translation: 卷筒纸卷绕单元包括具有间隔开的主轴的转台和用于接收纸幅的芯。 一个滑块安装在卷筒下方的转盘下方的转盘上。 刀支架枢转地固定在滑块上。 动力缸将滑块定位在卷筒纸切割位置和缩回位置之间。 枢轴单元连接在刀支架和主缸单元之间。 气动缸装载枢轴单元。 止动单元安装到机架上,并且包括可调节构件,用于建立切割刀的角度定向,以在切割动作期间相对于幅材精确地定位刀。 一个空气条被安装在卷筒纸路径的上方,当刀片枢转时向下移动。 网页的自由网页移动到新的核心。 空气杆包括凸轮,该凸轮与支架上的凸轮辊接合并枢转刀来切割网。 优选的是,当刀移动到切割位置时,操作气缸缸,并且联接到刀支架的凸轮被枢转气杆接合,并且刀片刀片枢转并移动通过腹板。 空气杆沿与刀相对的方向移动通过网。 空气吹扫将纸幅的自由端向下驱动到围绕新芯的引导件中。

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