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US 2022/0023970 A1Published application
Laser welding device
AssigneeAisin Aw Industries Co., Ltd.
InventorsKouji TAKEMOTO, Kazuyoshi MIYAMOTO, Tomoaki YOSHIDA, Daichi SUMIMORI, Hiroshi HASEGAWA
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Abstract
This laser welding device includes a tubular portion. The tubular portion includes a first tubular portion and a second tubular portion. The second tubular portion has a constant cross-sectional shape orthogonal to an irradiation direction along the irradiation direction E. The tubular portion has a predetermined length that is longer than a length of a chamber in the irradiation direction.
Claims9
A laser welding device comprising:
- a chamber that has a low-pressure internal space in which a workpiece is disposed;
- a laser beam irradiation unit that irradiates the workpiece with a laser beam to weld the workpiece;
- and
- a tubular portion through which the laser beam from the laser beam irradiation unit passes and which communicates with the chamber,
- wherein the tubular portion includes a first tubular portion that is disposed on a side opposite to an irradiation direction side of the laser beam and has a laser transmission window through which the laser beam is transmitted and a second tubular portion which has a space through which the laser beam passes and is adjacent to the irradiation direction side of the first tubular portion,
- the second tubular portion has a constant cross-sectional shape orthogonal to the irradiation direction along the irradiation direction, and
- the tubular portion has a predetermined length longer than a length of the chamber in the irradiation direction.
4 more elements
Dependencies are inferred from the claim text.