Patent ID: 6098512
Filing Date: 2000-08-08
Classification: B26D,B26F,Y10T

Abstract:
A method for cutting a continuously moving web of material into sections, the web of material having first and second sides, said method comprising the steps of:positioning a stationary mounting member along one side of a conveyor;mounting a drive system to the stationary mounting member, the drive system comprising a second plate which is driven independently in a second axis by a second motor, and a first plate driven by a first motor, wherein a rail structure couples the first plate to the second plate such that the first plate and the second plate are driven simultaneously in the first axis;mounting a plurality of nozzles to the second plate of the drive system such that the nozzles are driven simultaneously in parallel paths;positioning the web of material on the conveyor having a longitudinal axis parallel to said second axis and a lateral axis parallel to said first axis;positioning the nozzles above the web of material;commanding said conveyor to move in a first direction at a predetermined web speed;delivering a fluid at an intensified pressure to each of the plurality of nozzles, said nozzles being selectively moveable in the first axis and the second axis, said nozzles moving in parallel paths;simultaneously directing a jet of said fluid from each of the plurality of nozzles onto the web;first, driving said plurality of nozzles to move in said first and second axes from a first cut starting position at the first side of the web to a first cut ending position at the second side of the web which first cut ending position is also disposed in said first direction relative to said first cut starting position;second, driving said plurality of nozzles to move in said first axis in a direction opposite to said first direction to a second cut starting position directly opposite the first cut starting position;third, driving said plurality of nozzles to move in said first and second axes from said second cut starting position at the second side of the web to a second cut ending position at the first side of the web which second cut ending position is also disposed in said first direction relative to said second cut starting position; andfourth, driving said plurality of nozzles to move in said first axis in a direction opposite to said first direction to said first cut starting position directly opposite said second cut starting position.