Method of continuous slitting of flat material and apparatus the

Details Method of continuous slitting of flat material and apparatus the Method of continuous slitting of flat material and apparatus the

1977-02-07

1981-08-11

Meister, J. M.

Severing by tearing or breaking

Methods

With preliminary weakening

29413, 83108, 83884, 83887, 225 96, B26F 300, B23D 1906

Patent

active

042829968

ABSTRACT:
A method and apparatus for continuous cold cutting or slitting of a flat material wherein the flat material is subjected to a first step of partial-shearing or penetration in a zigzag state to a controlled depth of penetration, and subsequently to a second step of flattening, thus forcing the penetration formed in the material back to substantially the original thickness of the material, thereby to perform complete severing or slitting the material having no burrs formed during the operation. The first working action is obtained from feeding of the flat material into the controlled spacing of opposing pairs of cutter discs so that there occurs partially shearing or penetration in the flat material under an optimally predetermined interfering action by the opposing pairs of cutter discs into the material when it engages therewith. The second working action is obtained from the insertion of thus partially-sheared or penetrated material into the spacing optimally predetermined between an opposing pair of rolls having a flat cylindrical surface so that there occurs flattening action by the opposing pair of rolls over the both surfaces of the material when engaged therewith. The cutter discs and flattening rolls are controllably driven in synchronism.

REFERENCES:
patent: 244827 (1880-02-01), Hewitt
patent: 2053375 (1936-09-01), Nicholas
patent: 3641853 (1972-02-01), Jungbeck
patent: 4109500 (1978-08-01), Franek

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