公开(公告)号：US4151770A

公开(公告)日：1979-05-01

申请号：US842285

申请日：1977-10-14

申请人： Joseph J. D'Angelo ,  Lawrence S. Maccherone

发明人： Joseph J. D'Angelo ,  Lawrence S. Maccherone

IPC分类号： B26D7/02 ,  B65H20/02 ,  B26D5/24

CPC分类号： B26D7/025 ,  B65H20/02 ,  Y10T83/4455 ,  Y10T83/4491 ,  Y10T83/4594 ,  Y10T83/902

摘要： Two webs of different widths of microfoam are fed from web rolls by a continuously driven roller and a pinch roller through a heated-wire cutting station. At the cutting station, a single cutting wire extends across the path of both webs; a single set of clamping plates is also provided. The feed of the webs may be alternately interrupted by a clamping device which includes a pivotal clamp support that can be swung in a rocking motion back and forth about its pivot axis. A pair of U-shaped channels located on either side of the support pivot axis extend across the width of both webs and can be swung respectively toward and away from the webs. Removable clamping segments are fitted into a portion of each U-shaped channel to define adjustable length clamping elements which extend across the widths of respective webs for accommodating various sizes of webs. By swinging the clamp support between two positions, the clamping device alternately clamps one or the other web against a fixed clamp bar. To drive either web, the pinch roller is moved toward the driven roller and stopped when the rollers are at a predetermined minimum spacing less than the thickness of the webs. The frictional force of the driven roller on the web is sufficient to pull the unclamped web but not to tear the clamped web.

摘要翻译： 不同宽度的微泡的两个腹板通过连续从动辊和夹送辊通过加热线切割站从卷材辊进料。 在切割站处，单个切割线延伸穿过两个腹板的路径; 还提供了一组夹紧板。 腹板的进给可以由夹紧装置交替地中断，该夹紧装置包括枢转的夹紧支架，所述枢转夹持支架可围绕其枢转轴线来回摆动。 位于支撑枢转轴线的任一侧上的一对U形通道延伸穿过两个腹板的宽度，并且可以分别朝向和远离腹板摆动。 可拆卸的夹紧段被装配到每个U形通道的一部分中，以限定跨越各个腹板的宽度延伸的可调节长度的夹持元件，用于容纳各种尺寸的腹板。 通过将夹具支撑件摆动在两个位置之间，夹紧装置将一个或另一个腹板交替地夹紧固定的夹紧杆。 为了驱动两个腹板，当辊子处于小于腹板厚度的预定最小间距时，夹紧辊向着从动辊移动并停止。 从动辊在纸幅上的摩擦力足以拉动未夹紧的纸幅，但不能撕开夹紧的纸幅。