公开(公告)号：US20230121254A1

公开(公告)日：2023-04-20

申请号：US18084813

申请日：2022-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Jingbo WANG ,  Tsutomu SUGIYAMA ,  Shunsuke KAWAI ,  Kenzo SHIBATA ,  Masashi ISHIGURO

IPC: B23K31/12 ,  B23K26/082 ,  B23K26/03 ,  B23K26/06

Abstract: A laser welding device includes: a laser oscillator to which an incidence end of a fiber is connectable; a welding head connectable to an emission end of the fiber and configured to perform laser welding while condensing laser light emitted from the laser oscillator via the emission end and irradiating a workpiece with the laser light; a detector configured to detect presence or absence of a defect in the laser welding; and a controller including a processor and a memory storing instructions that, when executed by the processor, cause the laser welding device to perform operations. The operations include: performing, in response to receiving, from the detector, an output signal indicating a defect at a welding point on the workpiece during the laser welding of the workpiece, control such that supplementary laser welding is performed at a predetermined position in a vicinity of the welding point.

公开(公告)号：US20190351507A1

公开(公告)日：2019-11-21

申请号：US16476075

申请日：2017-11-20

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Makoto RYUDO ,  Doukei NAGAYASU ,  Hitoshi NISHIMURA ,  Jingbo WANG ,  Masatoshi NISHIO ,  Hideaki YAMAGUCHI ,  Yoshiaki TAKENAKA ,  Kiyotaka EIZUMI ,  Ryo ISHIKAWA

IPC: B23K26/08 ,  B23K26/06

Abstract: A laser processing head includes parallel plate (17) that shifts an optical axis of a laser beam to be emitted from a top to a bottom of body case (6) from a first optical axis to a second optical axis, parallel plate (19) that shift the optical axis of the laser beam from the second optical axis to a third optical axis, and body case (6) that accommodates holders (7 and 18) that respectively hold parallel plates (17 and 19). The laser processing head further includes a rotation mechanism that rotates holders (7 and 18) around a first rotary axis. Opening (7a) that a laser beam reflected by an incident surface of second parallel plate (19) passes through is formed in holder (7), and light receiving part (6a) that receives the laser beam having passed through opening (7a) is disposed in body case (6).

公开(公告)号：US20210146481A1

公开(公告)日：2021-05-20

申请号：US17162510

申请日：2021-01-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masatoshi NISHIO ,  Jingbo WANG ,  Hitoshi NISHIMURA ,  Motoki MORIOKA

IPC: B23K26/70 ,  B23K26/06 ,  B23K26/38 ,  B23K26/082

Abstract: A first detector detects an output of a reflected beam from an exit end surface of a first parallel plate. A determination unit determines that an abnormality occurs in the first parallel plate when the detection value of the first detector is smaller than a predetermined determination threshold.

公开(公告)号：US20210077946A1

公开(公告)日：2021-03-18

申请号：US17103021

申请日：2020-11-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Makoto RYUDO ,  Masatoshi NISHIO ,  Jingbo WANG

IPC: B01D53/04 ,  B01D53/26 ,  H01S5/022 ,  H01S5/068

Abstract: A laser device includes a laser oscillator, a dehumidifier, and a controller controlling an operation of the dehumidifier. The controller controls the dehumidifier such that the dew point inside the laser oscillator is lower than the first dew point when a monolayer or less of water molecules is adsorbed, or such that the dew point is equal to or higher than the second dew point when more than a monolayer of water molecules is adsorbed inside the laser oscillator, and is lower than the third dew point at which the dew condensation starts to occur inside the laser oscillator.

公开(公告)号：US20190293873A1

公开(公告)日：2019-09-26

申请号：US16466404

申请日：2017-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kiyotaka EIZUMI ,  Makoto RYUDO ,  Doukei NAGAYASU ,  Hitoshi NISHIMURA ,  Jingbo WANG ,  Masatoshi NISHIO ,  Hideaki YAMAGUCHI ,  Yoshiaki TAKENAKA ,  Ryo ISHIKAWA

IPC: G02B6/32 ,  G02B6/42 ,  G02B6/26 ,  B23K26/03 ,  B23K26/06 ,  H01S5/022

Abstract: There is provided an optical axis alignment mechanism between the laser oscillator and the optical fiber. The laser oscillator emits laser light, which then emerges from the emission end of the optical fiber via the axis alignment mechanism. Part of the laser light is received on the light-receiving surface of the CCD camera of a laser light evaluator. Thus, the laser light evaluator acquires a light intensity distribution. The light intensity distribution is used by the optical axis alignment mechanism to align the axis of the laser oscillator with the axis of the optical fiber.