Method and apparatus for cutting successive segments of sheet ma

Details Method and apparatus for cutting successive segments of sheet ma Method and apparatus for cutting successive segments of sheet ma

1990-08-21

1991-08-27

Yost, Frank T.

Cutting

Processes

Plural cutting steps

83 56, 83 766, 83940, B26D 530, D06H 700

Patent

active

050423398

ABSTRACT:
In a method and apparatus for cutting sheet material wherein the material is cut in bites or segments by bringing in stepwise fashion successive lengthwise segments to a cutting station incomplete cutting of a line or pattern piece when the line or pattern piece is continued from one segment to another is avoided by a retracing of the line of cut in the vicinity of the line's or pattern piece's transition from one segment to another. Therefore, when the cutting tool, following the advancement of the material to bring a fresh segment to the cutting station, is returned to the vicinity of a previously cut point it retraces a portion of the previously cut line to promote complete separation of the desired material from the waste material despite possible relaxation or other shifting or mispositioning of the material between the times of the cutting tool's first and second arrivals at the transition point.

REFERENCES:
patent: 3939742 (1976-02-01), Jung
patent: 4133233 (1979-01-01), Pearl
patent: 4972745 (1990-11-01), Bruder et al.

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