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热词
    • 6. 发明授权
    • Apparatus and method for activating a device for operating on a moving
workpiece
    • 用于激活用于在移动的工件上操作的装置的装置和方法
    • US4821973A
    • 1989-04-18
    • US112276
    • 1987-10-26
    • Leonard I. TafelLeonard W. Kosoglad
    • Leonard I. TafelLeonard W. Kosoglad
    • B65H19/18B65H19/20
    • B65H19/1863B65H19/1821B65H2301/41361B65H2301/41734B65H2301/4185B65H2301/4641B65H2511/212B65H2511/51Y10T83/515Y10T83/528
    • An apparatus is provided for handling a web of material fed from a roll. When the roll is larger than a selected amount, a roll contacting belt contacts the outer surface of the roll to aid in rotating the roll. The roll contacting belt is speed-responsive to a tension sensing means. Once the roll decreases to the selected amount, the roll contacting belt is disengaged from the roll and a core brake controls the speed of the roll. This arrangement reduces web upsets caused by out of round new large rolls and eliminates telescoping due to the action of the belt against small diameter rolls. In the illustrative form of the invention, the apparatus provides a continuous supply of web material by handling a first roll from which web material is being fed through an infeed roller and a nip roller, and a second roll from which web material is fed after the web material of the first roll has expired. The speed of the first roll is controlled by the core brake and when the web from the first roll has almost expired, the roll contacting belt contacts the outer surface of the second roll to aid in its rotation. A web tension sensing means controls the speed of the infeed roller, which speed is transmitted to the roll contacting belt so that the speed of the web at the infeed roller and the speed of the roll contacting belt are matched. The web from the first roll is adhesively connected to the web from the second roll and then severed, while both webs are at the same speed. A system is disclosed for anticipating the inherent dealy time between the actuating signal for the severing operation and the actual severing of the web.
    • 提供了一种用于处理从辊供给的材料卷材的装置。 当辊大于所选择的量时,辊接触带接触辊的外表面以有助于使辊旋转。 辊接触带对张力感测装置进行速度响应。 一旦辊减少到所选择的量,辊接触带与辊脱离,并且芯制动器控制辊的速度。 这种布置减少了由圆形新的大卷筒引起的网络麻烦,并且由于皮带对小直径卷筒的作用而消除了伸缩。 在本发明的示例性形式中,该装置通过处理第一卷纸来提供幅材材料的连续供应,第一卷纸从该纸幅材料通过进给辊和夹持辊进给,第二卷从第二卷供应纸幅材料 第一卷的网页材料已过期。 第一辊的速度由芯制动器控制,并且当来自第一辊的纤维网几乎已经过期时,辊接触带接触第二辊的外表面以有助于其旋转。 纸幅张力检测装置控制进纸辊的速度,该速度传递到辊接触带,使得纸幅在进料辊处的速度和辊接触带的速度匹配。 来自第一辊的纸幅从第二辊粘合地连接到纸幅上,然后被切断,而两个纸幅处于相同的速度。 公开了一种系统,用于预测用于切断操作的致动信号和幅材的实际切断之间的固有的锯齿时间。