B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
B23K 26/06 (2006.01) B23K 26/08 (2006.01) H01S 3/101 (2006.01)
Patent
CA 2438437
An apparatus and method for high speed laser perforation of a web involves a web-bearing cylinder receiving the web in a wrapped spiral pattern. The web- bearing cylinder includes a slit along a circular circumference of the cylinder. A laser guiding tube is provided for propagation of a laser beam within the web-bearing cylinder. An inner cylinder is also provided in the web- bearing cylinder. The inner cylinder has an axis, supports a reflecting mirror adjacent to the laser guiding tube to direct the laser beam in the slit in the web-bearing cylinder, and is rotatable around the axis to adjust an orientation of the reflecting mirror and thereby direct the laser beam around the circular circumference of the web-bearing cylinder in the slit.
L'invention concerne un appareil et un procédé de perforation de toile à grande vitesse mettant en oeuvre un cylindre porteur de toile recevant la toile dans un enroulement en spirale. Le cylindre porteur de toile comporte une fente selon une circonférence circulaire du cylindre. Un tube de guidage laser permet la propagation d'un faisceau laser à l'intérieur du cylindre porteur de toile. Le cylindre porteur de toile comprend aussi un cylindre interne. Ce cylindre interne possède un axe, supporte un miroir réfléchissant adjacent au tube de guidage laser afin de diriger le faisceau laser dans la fente du cylindre porteur de toile, et peut tourner autour de l'axe afin d'ajuster l'orientation du miroir réfléchissant et ainsi diriger le faisceau laser autour de la circonférence circulaire du cylindre porteur de toile, à travers la fente.
Bereskin & Parr
Lawson William E.
Preco Laser Systems Llc
LandOfFree
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