Method and apparatus for cutting corrugated webs having louvers

Details Method and apparatus for cutting corrugated webs having louvers Method and apparatus for cutting corrugated webs having louvers

1992-03-02

1993-11-16

Larson, Lowell A.

Metal deforming

By use of 'flying tool' engaging moving work

With cutting

83646, B21D 5302, B26D 516

Patent

active

052612627

ABSTRACT:
A method and apparatus for cutting corrugated webs having louvers from a strip which is continuously formed to define undulating fins or corrugations extending transversely of the strip. The method and apparatus comprises periodically interrupting the movement of the corrugated strip, locating the strip, and severing the corrugation along an apex by moving a shearing cutting blade such that the blade is moved to engage and cut beginning at one longitudinal edge and progressively across the apex of the corrugation to the other edge of the corrugation. The apparatus functions to lift the knife blade initially to separate the corrugation thereby moving louvers out of contact with one another such that the louvers would not be severed by the movement of the knife blade.

REFERENCES:
patent: 2071584 (1937-02-01), Shippy
patent: 3513740 (1970-05-01), Burghart
patent: 3885413 (1975-05-01), Auer
patent: 4054076 (1977-10-01), Kumabe
patent: 4516457 (1985-05-01), Bartesaghi
patent: 4956987 (1990-09-01), Hara et al.

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