The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2019
Filed:
Oct. 21, 2013
Ipg Photonics Corporation, Oxford, MA (US);
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Valentin Fomin, Burbach, DE;
Anton Starovoytov, Burbach, DE;
Andrey Abramov, Burbach, DE;
Valentin Gapontsev, Worcester, MA (US);
Artjom Fuchs, Burbach, DE;
Ingo Schramm, Burbach, DE;
Eugene Shcherbakov, Burbach, DE;
Holger Mamerow, Burbach, DE;
Andreas Michalzik, Wolfsburg, DE;
IPG PHOTONICS CORPORATION, Oxford, MA (US);
Abstract
A hand displaceable laser welding gun is configured with an elongated support column extending along a longitudinal axis and made from lightweight material. A support plate is displaceably mounted to the column while supporting thereon an optical head axially which is provided with optics. The optics is configured to direct a laser beam along a path towards a welding zone through a protective window of the optical head. The laser welding gun further is structured with a first arm mounted to the support plate and extending along a longitudinal axis of the gun diametrically opposite to the optical head. The inner surface of the displaceable arm has an inner surface defining a tunnel which is aligned with the optical head and axially traversed by the laser beam, a first axially flowing stream of pressurized gaseous medium, and a second axially flowing stream of gaseous medium. The second stream, entering the tunnel at a pressure lower than that one of the first stream in response to a pressure gradient generated in the column, does not generate vortexes within the column. The first and second streams exit through the downstream end of the tunnel next to the welding zone. As the streams flow out, they carry out welding debris flowing within the tunnel to the optical head.