公开(公告)号：US20210394308A1

公开(公告)日：2021-12-23

申请号：US17464632

申请日：2021-09-01

Applicant: TOYOKOH Co., Ltd.

Inventor： Hiroyasu TOYOSAWA ,  Kazuaki TOYOSAWA ,  Kazuhisa FUJITA ,  Shinichiro OKIHARA

IPC: B23K26/36 ,  B08B7/00 ,  B23K26/00 ,  B01J19/12 ,  B23K26/16 ,  B23K26/402 ,  B23K26/04 ,  B23K26/06 ,  B23K26/08 ,  B23K26/14 ,  B23K26/064 ,  B23K26/082 ,  B23K26/035

Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.

公开(公告)号：US20180085858A1

公开(公告)日：2018-03-29

申请号：US15828909

申请日：2017-12-01

Applicant: TOYOKOH Co., Ltd.

Inventor： Hiroyasu TOYOSAWA ,  Kazuaki TOYOSAWA ,  Kazuhisa FUJITA ,  Shinichiro OKIHARA

IPC: B23K26/36 ,  B23K26/402 ,  B23K26/035 ,  B23K26/14 ,  B23K26/08 ,  B23K26/06 ,  B23K26/04 ,  B23K26/00 ,  B08B7/00 ,  B01J19/12 ,  B23K26/16 ,  B23K26/082 ,  B23K26/064 ,  B23K103/00

CPC classification number: B23K26/36 ,  B01J19/12 ,  B08B7/0035 ,  B23K26/00 ,  B23K26/0006 ,  B23K26/037 ,  B23K26/04 ,  B23K26/06 ,  B23K26/064 ,  B23K26/08 ,  B23K26/082 ,  B23K26/0869 ,  B23K26/14 ,  B23K26/16 ,  B23K26/402 ,  B23K2103/56

Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.

公开(公告)号：US20230019043A1

公开(公告)日：2023-01-19

申请号：US17780278

申请日：2020-11-26

Applicant: TOYOKOH CO.,LTD.

Inventor： Kenjiro MOMI ,  Kazuhisa FUJITA ,  Manabu HARAGUCHI ,  Daisuke MORI ,  Momo TOSUE

IPC: G01N21/17 ,  H04R1/08 ,  H04R1/40 ,  H04R3/00

Abstract: Disclosed is a laser irradiation state diagnosing method which allows accurately diagnosing a laser irradiation state. When irradiating a laser beam so that an irradiation spot scans the surface of the irradiation object, acoustic information in vicinity of the irradiation spot is acquired. And based on characteristics of the acoustic information, such as an intensity of a component of a specific frequency band or a frequency band distribution, a state of peeling of the adhered substances existing on the surface of the irradiation object is determined.

公开(公告)号：US20170252862A1

公开(公告)日：2017-09-07

申请号：US15310207

申请日：2015-07-13

Applicant: TOYOKOH Co., Ltd.

Inventor： Kazuaki TOYOSAWA ,  Akihiro KUROYANAGI ,  Kazuhisa FUJITA ,  Shinichiro OKIHARA

IPC: B23K26/082 ,  B23K26/16

CPC classification number: B23K26/082 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/08 ,  B23K26/10 ,  B23K26/14 ,  B23K26/16

Abstract: This is to provide a laser irradiation apparatus which can drive a deflection optical system (33) with a high speed by a small and lightweight structure and can cope with heat generation of the optical system. The laser irradiation apparatus includes a condensing optical system (32) for condensing a laser beam (B) generated by a laser oscillator (10) at a predetermined focal point (FP), a deflection optical system (33) for deflecting the laser beam (B) generated from the condensing optical system (32) with a predetermined deflection angle, and a driving unit (100) for rotationally driving the deflection optical system (33) around a rotation axis provided substantially in parallel to an optical axis of the condensing optical system (32), wherein the driving unit (100) has an air motor (100) which convert an energy possessed by a gas supplied from a gas supplying source (60) to a rotational force.

公开(公告)号：US20230150065A1

公开(公告)日：2023-05-18

申请号：US17916531

申请日：2021-03-26

Applicant: MAEDA CORPORATION ,  TOYOKOH CO.,LTD.

Inventor： Yuji SHIRANE ,  Takehiro MISAKA ,  Kenji MARUYAMA ,  Takayuki OBARA ,  Kenjiro MOMI ,  Kazuhisa FUJITA ,  Takahiro UTSUGITA ,  Manabu HARAGUCHI

IPC: B23K26/354 ,  B23K26/082 ,  B23K26/364

CPC classification number: B23K26/354 ,  B23K26/082 ,  B23K26/364 ,  B23K2103/50

Abstract: Disclosed is a way of providing a surface processing method for concrete in which vitrifying is suppressed even when high-speed processing is performed. In a surface processing method of concrete, a surface of the concrete is irradiated with a laser beam so that a beam spot is scanned along a predetermined scanning pattern and the scanning pattern moves along the surface at a predetermined feed speed. When the beam spot repeatedly passes through a predetermined portion in the scanning pattern, an overlap ratio, which is a ratio of overlapping of a passage path of the beam spot over a passage path of the beam spot in an immediately preceding irradiation, is 90% or less.