Method of and apparatus for cutting material to shape from a moving web by burning
AssigneeWinkler & Dunnebier Maschinenfabrik und Eisengiesserei KG
InventorsGunter Ehlscheid, Peter Langenbeck, Kurt Stemmler
Life of this patent
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Abstract
A method and apparatus for cutting a predetermined pattern in a moving web of material, such as paper, cardboard or the like is disclosed wherein a laser beam is deflected by a series of pivotable mirrors. The pivoting of the mirrors is controlled so as to cause the laser beam to trace and cut a predetermined pattern. The laser beam moves only in rectilinear motion, as does the web of material to be cut. Since the directions of motions are not parallel, any pattern may be cut by controlling the relative speeds of the laser beam and the moving web of material.
Claims16
Apparatus for cutting a predetermined pattern from a moving web of material, such as paper, cardboard or the like, comprising:
- a. a first pivotable mirror;
- b. a laser beam source which directs a laser beam onto said first pivotable mirror such that said beam is deflected thereby;
- c. a second pivotable mirror located so as to intercept said laser beam after it is deflected by said first pivotable mirror and further deflect said laser beam onto said moving web of material;
- d. means to pivot said first pivotable mirror;
- and
- e. means to pivot said second pivotable mirror,
- and wherein the pivot axes of said first and second pivotable mirrors are parallel to each other and located in a plane parallel to the plane of said moving web of material.
Apparatus for cutting a predetermined pattern from a moving web of material, such as paper, cardboard or the like, comprising:
- a. a first pivotable mirror;
- b. a laser beam source which directs a laser beam onto said first pivotable mirror such that said beam is deflected thereby;
- c. a second pivotable mirror located so as to intercept said laser beam after it is deflected by said first pivotable mirror and further deflect said laser beam onto said moving web of material;
- d. means to pivot said first pivotable mirror;
- e. means to pivot said second pivotable mirror, and wherein said means to pivot said first and second pivotable mirrors operates sequentially so as to pivot first one pivotable mirror then the other.
Apparatus for cutting a predetermined pattern from a moving web of material such as paper, cardboard or the like, comprising:
- a. a first pivotable mirror;
- b. a laser beam source which directs a laser beam onto said first pivotable mirror such that the beam is deflected thereby;
- c. first means to deflect said laser beam deflected by said first pivotable mirror onto said moving web of material;
- d. first means to pivot said first pivotable mirror so as to cause said laser beam to traverse a first path in said moving web of material and wherein said first pivotable mirror does not intercept and deflect said laser beam during a portion of its travel;
- e. a second pivotable mirror;
- f. second means to deflect said laser beam onto said second pivotable mirror when said laser beam is not deflected by said first pivotable mirror, said second pivotable mirror deflecting said laser beam onto said moving web of material;
- and
- g. second means to pivot said second pivotable mirror so as to cause said laser beam to traverse a second path in said moving web of material.
Dependencies are inferred from the claim text.