Method and apparatus for the focal form cutting of a moving web

Details Method and apparatus for the focal form cutting of a moving web Method and apparatus for the focal form cutting of a moving web

1977-11-14

1979-07-10

Truhe, J. V.

Electric heating

Metal heating

By arc

B23K 900

Patent

active

041608941

ABSTRACT:
A desired pattern to be cut from a moving web of material by a focused laser beam is traced by eccentrically mounting the focal lens 3 in a rotatable carrier 4. The lens may also be radially displaceable (FIG. 3), inclined and rotatable (FIG. 4), doubly rotatable (FIG. 5), and/or the carrier 4 may be linearly displaceable (FIG. 6). By suitably and simultaneously controlling the various motion parameters, whose resultants are superimposed on one another, any desired cutting pattern can be traced. The movements are primarily uni-directional rather than oscillatory, which greatly simplifies the implementing hardware, and since all of the laser beam reflecting mirrors involved are fixedly mounted and move only in planes parallel to the web, the laser beam focal length always remains constant.

REFERENCES:
patent: 3594532 (1971-07-01), Lunau
patent: 3642343 (1972-02-01), Tchejeyan
patent: 3799657 (1974-03-01), Dager et al.
patent: 3953706 (1976-04-01), Harris et al.
patent: 3989385 (1976-01-01), Dill et al.

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