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US-2019151945-A1 · May 23, 2019 · US
Laser welding apparatus
US11904407B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11904407-B2 |
| Application number | US-202017023962-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 17, 2020 |
| Priority date | Nov 13, 2019 |
| Publication date | Feb 20, 2024 |
| Grant date | Feb 20, 2024 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A laser welding apparatus is equipped with a laser head that emits a laser beam and an airflow forming unit that forms sheet-shaped airflows, in which the airflows formed by the airflow forming unit traverse an optical path of the laser beam emitted from the laser head, the airflows traversing the optical path at multiple positions which are spaced from each other in a direction along the optical path in a same direction. The airflow forming unit has an opening between the airflows at the multiple positions, the opening penetrating in a direction in which the airflows traverse the optical path.
First claim
Opening claim text (preview).
The invention claimed is: 1. A laser welding apparatus comprising: a laser head that emits a laser beam; and an airflow forming unit including an emission nozzle that forms sheet-shaped airflows, wherein the sheet-shaped airflows formed by the airflow forming unit traverse an optical path of the laser beam emitted from the laser head, the airflows traversing the optical path at a plurality of positions which are spaced from each other in a direction along the optical path in a same direction, and the airflow forming unit has an opening between the sheet-shaped airflows at the plurality of positions, the opening penetrating in a direction in which the sheet-shaped airflows traverse the optical path, wherein the emission nozzle is positioned to surround the opening. 2. The laser welding apparatus according to claim 1 , wherein the airflow forming unit includes two emission nozzles that form the sheet-shaped airflows, and the two emission nozzles are positioned to surround the opening. 3. The laser welding apparatus according to claim 1 , wherein the airflow forming unit includes two emission nozzles that form the sheet-shaped airflows and one or more further emission nozzles each of which forms a further sheet-shaped airflow, and the two emission nozzles and the one or more further emission nozzles are positioned to surround the opening. 4. The laser welding apparatus according to claim 1 , wherein: the airflow forming unit includes a plurality of emission nozzles that form the sheet-shaped airflows, and the emission nozzles are positioned to flank the opening. 5. The laser welding apparatus according to claim 1 , further comprising a dust collecting filter that is disposed in the opening. 6. The laser welding apparatus according to claim 1 , wherein the airflow forming unit forms at least two of the sheet-shaped airflows that are parallel to each other. 7. A laser welding apparatus comprising: a laser head that emits a laser beam; and an airflow forming unit including an emission nozzle that forms sheet-shaped airflows, wherein at least one sheet-shaped airflows formed by the airflow forming unit orthogonally traverses an optical path of the laser beam emitted from the laser head and at least one sheet-shaped airflow traverses an area parallel to or oblique to the optical path of the laser beam, wherein the sheet shaped airflows are disposed at a plurality of positions along the optical path, and the airflow forming unit has an opening between the sheet-shaped airflows at the plurality of positions, the opening penetrating in a direction in which the airflows traverse the optical path, wherein the emission nozzle is positioned to surround the opening.
Assignees
Inventors
Classifications
- B23K26/21Primary
by welding · CPC title
Nozzles; Features related to nozzles · CPC title
for the removal of by-products · CPC title
- B23K26/1488Primary
Means for protecting nozzles, e.g. the tip surface (by breakaway lines B23K26/1482) · CPC title
Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head · CPC title
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- What does patent US11904407B2 cover?
- A laser welding apparatus is equipped with a laser head that emits a laser beam and an airflow forming unit that forms sheet-shaped airflows, in which the airflows formed by the airflow forming unit traverse an optical path of the laser beam emitted from the laser head, the airflows traversing the optical path at multiple positions which are spaced from each other in a direction along the optic…
- Who is the assignee on this patent?
- Fanuc Corp
- What technology area does this patent fall under?
- Primary CPC classification B23K26/21. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 20 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).