Patent DE-4040750-A1 (DE)
Title: Separating cut ends of web of material
Inventor: GERBER HEINZ JOSEPH
IPC: B26D7/18
Filed: 1990-12-19
Abstract: In a system for cutting stacks of pattern pieces from a layup of textile sheet material having a substantial length dimension and an outer surface parallel to said length dimension and where sheet material after cutting consists of cut pattern pieces each of which may vary in size and in shape depending on the choice of pattern selected and adjacent portions of waste material substantially all of which portions of waste material are interconnected with one another to form a single unit, or a small number of units, of waste material extending along the length dimension of said material, an appts. for separating said cut pattern pieces from said waste material, said appts. comprising means for supporting sheet material for movement forwardly parallel to said length dimension along a generally horizontal path to a separating station following its cutting; and separating means associated with said separating station for causing said cut pattern pieces to follow one path of movement away from said separating station to a first delivery point and for causing said waste material to follow a second path of movement different from said one path away from said separating station to a second delivery point different from said first delivery point, said separating means including means for pulling said waste material from a first point to a second point spaced from said first point so that said waste material is tensioned between said first point and said second point and as a result of such tensioning is constrained to move between said first and second points, the space between said first and second points being part of said one path and said first and second points being so arranged that in moving between them said waste material moves in a direction other than the direction it would move in under the influence of gravity alone such that the leading edge of each cut pattern piece is urged downwardly below a generally horizontal plane pulling the remaining portion of each pattern piece with it below said plane prompted at least by the force of gravity as the corresp.portion of waste material moves in the direction of said second path; said separating means also including means capable of uniformly engaging said sheet material completely across its width such that said space located between said first point and said second point extends completely transversely across said sheet material without interruption, said one path and said space being so arranged that as said waste material moves past said first point and along said second path cut pattern pieces contained therein are urged by gravity to move through said space from said waste material and to said one path said separating means including means downstream of said uniform engaging means for aiding in the separation of said cut pattern pieces from said waste material by applying forces to said pattern pieces tending to push said pattern pieces from said waste material, and bundling means for bundling the stacks of cut pattern pieces before reaching said separating station