Cutting – Processes – Cut advances across work surface
Patent
1987-06-10
1989-05-30
Yost, Frank T.
Cutting
Processes
Cut advances across work surface
83 72, 83282, 83365, 83368, 83370, 83614, 83925CC, B26D 727
Patent
active
048339571
ABSTRACT:
Method and apparatus for cutting off selected length panels from an indefinte length strip of fabric with minimum waste, the fabric being comprised as superposed longitudinal and transverse elongate elements, wherein the transverse elements may deviate from strict perpendicularity to the length direction of the strip, e.g., be skewed or bowed. A support defines a path along which the strip of fabric and its longitudinal elements are to extend. A cutter unit is actuable for cutting elements of the strip to cut off a panel from the strip. A transverse moving unit relatively moves the cutter means and strip in a direction transverse to the length of the strip to cut the full width of the strip and thereby separate a panel therefrom. A longitudinal moving unit is actuable for relatively moving the cutter and strip in a direction longitudinal of the strip. A vision guided unit optically responds to deviations in the direction of at least one of the transverse elements of the strip adjacent the cutter for actuating the longitudinal moving unit to relatively move the cutter and strip to enable the cutter to cut the strip substantially along a single transverse element and at least substantially avoid cutting of transverse elements, despite substantially skewing or bowing of the transverse elements out of perpendicularity with the length direction of the strip.
REFERENCES:
patent: 4071899 (1978-01-01), Holy
patent: 4217492 (1980-08-01), Fayfield
patent: 4356393 (1982-10-01), Fayfield
patent: 4453658 (1984-06-01), Augustin
patent: 4581965 (1986-04-01), Gerber
Index page, and pp. 2, 35 and 36 from 1983 Banner Engineering Corp. Cat. Brochure sheet of Hotec, Inc. of Buford, Georgia.
Haworth Inc.
Phan Hien H.
Yost Frank T.
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