Inventors:
Ming Li - Murrysville PA, US
Hongbing Lu - Edmond OK, US
James Rushing - Maryville TN, US
Dennis Henninger - Newburgh IN, US
Xingyun Shen - Bettendorf IA, US
International Classification:
B26D001/24, B23D019/04, B25B021/00, B23B051/00
Abstract:
The apparatus for trimming sheet material includes a top knife and an opposing bottom knife for trimming sheet or web material passing between the top and bottom knives. The top knife defines a negative rake angle with a substantially vertical plane passing through a cutting edge of the bottom knife. The negative rake angle may be between about -10° and -30° and, more preferably, between about -12° and -20°. The top and bottom knives may be disk or block knives.