Patent · US Active

Device for forming longitudinally spaced grooves or slits into a material web with a focused laser beam

US9283638B2 · kind B2 · utility

0Cited by

6References

14Claims

0Family size

Assignee

ROFIN-BAASEL Lasertech GmbH & Co. KG · DE

Inventors

Armin Pollak · Starnberg, DE
Günter Wurzer · Birkenfeld, DE

Key dates

Filing date	Feb 9, 2012
Grant date	Mar 15, 2016
Priority date	—
Expiry date	Nov 9, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K26/364
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A device forms grooves or slits in a material web as it moves in a longitudinal direction. The grooves or slits, which are spaced apart from one another in the longitudinal direction, are formed by a laser beam. A laser beam source generates a continuous laser beam and a deflection mirror directs the laser beam onto the material web. The mirror rotates about an axis of rotation and it is displaceable along the axis. The mirror has a first mirror face, the line of intersection of which with a sectional plane perpendicular with respect to the axis of rotation forms a circular arc which varies depending on the axial position of the sectional plane. A second mirror face deflects the laser beam towards an absorber. Focusing optics focus the laser beam, after reflection from the first mirror face, onto the moving material web.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.