公开(公告)号：US12296405B2

公开(公告)日：2025-05-13

申请号：US17541166

申请日：2021-12-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jingbo Wang ,  Masatoshi Nishio ,  Kenzo Shibata ,  Manabu Nishihara

IPC: B23K26/21

Abstract: Laser welding device (1000) includes: laser oscillator (100); optical fiber (300) that transmits a laser beam (LB) generated in laser oscillator (100); laser beam emitting head (400) that is attached to the emission end of optical fiber (300) and emits laser beam (LB) toward workpiece (600); manipulator (500) with laser beam emitting head (400) attached thereto; and controller (200) that controls laser beam emitting head (400) so as to cause laser beam (LB) to be scanned three-dimensionally on the surface of workpiece (600). Controller (200) controls laser beam emitting head (400) so as to change a focal position of laser beam (LB) in accordance with a shape of a welded portion in workpiece (600).

公开(公告)号：US12263541B2

公开(公告)日：2025-04-01

申请号：US17527495

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jingbo Wang ,  Masatoshi Nishio ,  Kenzo Shibata ,  Manabu Nishihara

IPC: B23K26/384 ,  B23K26/035 ,  B23K26/062 ,  B23K26/064

Abstract: A laser processing device includes a laser oscillator, optical fiber (90), beam control mechanism (20), and a laser light emitting head. The laser oscillator includes first and second laser oscillation units that generate first and second laser light rays (LB1) and (LB2), respectively. Beam control mechanism (20) includes optical path changing and holding mechanism (40) that is disposed between second condenser lens (32) that condenses second laser light (LB2) and dichroic mirror (33) that multiplexes first and second laser light rays (LB1) and (LB2) and causes the multiplexed light to be incident on optical fiber (90). Beam control mechanism (20) changes an incident position of second laser light (LB2) on optical fiber (90).

公开(公告)号：US12263540B2

公开(公告)日：2025-04-01

申请号：US17527453

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jingbo Wang ,  Masatoshi Nishio ,  Kenzo Shibata ,  Manabu Nishihara

IPC: B23K26/384 ,  B23K26/035 ,  B23K26/062 ,  B23K26/064

Abstract: A laser processing device includes a laser oscillator, an optical fiber that is a multi-clad fiber, a beam control mechanism provided in the laser oscillator, and a laser light emitting head attached to the optical fiber. The beam control mechanism includes a condenser lens, an optical path changing and holding mechanism that is disposed between the condenser lens and an incident end face of the optical fiber and changes an optical path of laser light LB, and a controller that controls an operation of the optical path changing and holding mechanism. The beam control mechanism controls a power distribution of the laser light by changing an incident position of the laser light on the incident end face.