Method for cutting a web feeding tail and a corresponding cutting device
    7.
    发明授权
    Method for cutting a web feeding tail and a corresponding cutting device 失效
    用于切割卷筒纸送料尾部和相应切割装置的方法

    公开(公告)号:US06526854B1

    公开(公告)日:2003-03-04

    申请号:US09890183

    申请日:2001-07-26

    IPC分类号: B26D706

    CPC分类号: D21G9/0063 Y10T83/0453

    摘要: The invention relates to a method for cutting a web feeding tail and a corresponding cutting device. In the method the web feeding tail is detached from a roll and tension ed for cutting. The web feeding tail is cut by the blade of a cutting device, without a counter blade, and the cut web feeding tail is guided forwards in the desired direction to a next web feeding device. The cutting device is located on the opposite side of the web feeding tail to the aforesaid following web feeding device. The web feeding tail is cut by the blade over the entire width of the web feeding tail. At the same time, the cut web feeding tail is guided in a single layer from the blade to the aforesaid web feeding device.

    摘要翻译: 本发明涉及一种用于切割卷筒纸送料尾部和相应切割装置的方法。 在该方法中,幅材进给尾部与辊分离并且被拉紧以进行切割。 纸幅馈送尾部由切割装置的刀片切割而没有反叶片,并且切割的卷筒纸进给尾部沿所需方向被向前引导到下一个卷筒纸进给装置。 切割装置位于卷筒纸进给尾部的相对侧,与上述的后续卷筒纸进给装置相对。 纸幅进纸尾在纸幅馈送尾部的整个宽度上被刀片切割。 同时,切割的卷筒纸进料尾部从单个叶片引导到上述卷筒纸送料装置。

    Method for quick-opening a set of rolls in a calender, in particular in
a supercalender, and a hydraulic system for a set of rolls in a
calender, in particular a supercalender
    10.
    发明授权
    Method for quick-opening a set of rolls in a calender, in particular in a supercalender, and a hydraulic system for a set of rolls in a calender, in particular a supercalender 失效
    用于在压延机中特别是在超级压光机中快速打开一组辊的方法,以及用于压延机中的一组辊的液压系统,特别是超级压光机

    公开(公告)号:US5806415A

    公开(公告)日:1998-09-15

    申请号:US852107

    申请日:1997-05-06

    IPC分类号: D21G1/00

    CPC分类号: D21G1/002

    摘要: A method for quick-opening a set of rolls in a calender, in particular a supercalender, in which a paper or board web to be calendered is passed through calendering nips formed by a variable-crown top roll, a variable-crown bottom roll and by two or more intermediate rolls arranged between the top and bottom rolls. The rolls are arranged to form a substantially vertical stack of rolls, and the intermediate rolls are supported by the use of hydraulic relief cylinders so as to relieve the nip load produced by the mass of the bearing housings of the intermediate rolls and auxiliary devices associated therewith. During the quick-opening of the set of rolls, the bottom roll of the set of rolls is lowered and the relief pressures in the hydraulic relief cylinders are discharged so as to open the calendering nips. The hydraulic oil flowing out from the relief cylinders is controlled by valves connected to the relief cylinders of each intermediate roll so that, during quick-opening of the set of rolls, the roll nips may be opened in a controlled manner in a desired order. A hydraulic system for the set of rolls is also disclosed.

    摘要翻译: 一种用于在砑光机,特别是超级砑光机中快速打开一组辊的方法,其中待压延的纸或纸幅被通过由可变冠顶辊,可变冠顶辊和可变冠顶辊形成的压延辊隙, 通过布置在顶部和底部辊之间的两个或更多个中间辊。 辊布置成形成基本垂直的卷筒,并且通过使用液压释放缸来支撑中间辊,以便减轻由中间辊和与其相关联的辅助装置的轴承座的质量产生的辊隙负荷 。 在一组辊的快速打开期间,一组辊的底辊降低,并且液压浮雕缸中的释放压力被排出以打开压延夹头。 从卸压缸流出的液压油由连接到每个中间辊的卸压缸的阀控制,使得在快速打开该组辊期间,可以以所需顺序以受控的方式打开辊压。 还公开了一组辊的液压系统。