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    • 57. 发明公开
    • DEVICE FOR CONTROLLING THE WEB TENSION IN A RUNNING MATERIAL WEB
    • VORRICHTUNG ZUR BAHNSPANNUNGSREGELUNG AN EINER LAUFENDEN MATERIALBAHN
    • EP3083462A1
    • 2016-10-26
    • EP14821172.5
    • 2014-12-19
    • Tetra Laval Holdings & Finance S.A.
    • PETTERSSON, ThomasANDERSSON, IngvarÖHMAN, Peter
    • B65H23/16B65H20/34
    • B65H23/16B65H20/34B65H2301/522B65H2402/31
    • Device and method for controlling axial forces acting upon a moving web (27), which device (14) comprises a first rotatable roller (15), a second rotatable roller (17) and a third rotatable roller (19). The third roller (19) is placed between the first and second rollers (15 and 17) and is movable in a circular path in the vertical plane between a lower position (at 21) and an upper position (at 22) in response to axial forces acting at any moment upon the web (27). In order to enable a simple manual installation of the web (27), the third roller (19) has its upper position (at 22) at a sufficient vertical distance above the first and second rollers (15 and 17) to form an open horizontal passage through which the web (27) can pass freely between the first and second rollers (15 and 17) and the above-situated third roller (19). The axial forces are controlled by the device (14) by biasing the third roller (19) with a force which counters the motion of the third roller (19) in the direction of the upper working position (at 22) and which is less than the ultimate tensile strength of the particular web (27)
    • 用于控制作用在移动腹板上的轴向力的装置和方法包括第一,第二和第三可旋转辊。 第三辊位于第一和第二辊之间,并且响应于作用在纸幅上的任何时刻的轴向力,可在垂直平面中在下位置和上位置之间的圆形路径中移动。 为了简单地手动安装幅材,第三辊的上部位置在第一和第二辊上方具有足够的垂直距离,以形成开放的水平通道,网可以在第一和第二辊之间自由地通过,并且 位于第三辊上方。 通过以与第三辊的运动相反的方式对第三辊施加偏压来控制轴向力,所述力在上工作位置的方向上,并且小于卷材的极限拉伸强度。