公开(公告)号：US20070068355A1

公开(公告)日：2007-03-29

申请号：US11605591

申请日：2006-11-28

申请人： Randall Bascom ,  Douglas Kempski ,  John Dembowski

发明人： Randall Bascom ,  Douglas Kempski ,  John Dembowski

IPC分类号： B26D1/00

CPC分类号： D01G1/04 ,  Y10S83/913 ,  Y10T83/04 ,  Y10T83/4795 ,  Y10T83/483 ,  Y10T83/4836 ,  Y10T83/4841 ,  Y10T83/8732 ,  Y10T83/8748 ,  Y10T83/8749 ,  Y10T83/8755 ,  Y10T83/8776

摘要： A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains a mechanism such as a slip clutch or a limited torque stepping motor for maintaining a substantially constant biasing force at set up and during operation while allowing the rolls to separate slightly to pass a temporary thicker feed without recoil that currently shortens blade and backup roll working layer life.