KR20140065776A - Protective glass unit for laser optic head - Google Patents

Protective glass unit for laser optic head Download PDF

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Publication number
KR20140065776A
KR20140065776A KR1020120132517A KR20120132517A KR20140065776A KR 20140065776 A KR20140065776 A KR 20140065776A KR 1020120132517 A KR1020120132517 A KR 1020120132517A KR 20120132517 A KR20120132517 A KR 20120132517A KR 20140065776 A KR20140065776 A KR 20140065776A
Authority
KR
South Korea
Prior art keywords
air nozzle
protective glass
ball
glass unit
optical head
Prior art date
Application number
KR1020120132517A
Other languages
Korean (ko)
Inventor
이문용
정명섭
Original Assignee
주식회사 성우하이텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 성우하이텍 filed Critical 주식회사 성우하이텍
Priority to KR1020120132517A priority Critical patent/KR20140065776A/en
Publication of KR20140065776A publication Critical patent/KR20140065776A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

A protective glass unit for a laser optical head is disclosed. The protective glass unit for a laser optical head according to an embodiment of the present invention includes a laser optic head including an air nozzle for spraying compressed air supplied through an air supply hose connected to one side thereof to shut off scattered spatter from a welded portion, At the head, a protective glass; A glass frame installed at a rim of the protective glass and having a latching groove formed along a periphery thereof; And at least two ball stoppers installed to protrude from the inner circumferential surface of the air nozzle so as to protrude from the inner circumferential surface of the air nozzle so as to fit the balls into the engagement grooves of the glass frame.

Description

[0001] PROTECTIVE GLASS UNIT FOR LASER OPTIC HEAD [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective glass unit for a laser optical head, and more particularly, to a protective glass unit for a laser optical head for protecting an optical system inside a laser optical head from spatter generated during welding and cutting operations Unit.

In recent industrial fields, cutting, welding and heat treatment of metal materials have been applied to laser beams having excellent effects in terms of cost reduction, factory automation and quality improvement.

Some of the requirements for the application of such a laser beam include uniformizing the laser beam energy distribution, controlling the laser output to maintain a constant heat treatment temperature, optimizing the laser beam irradiation speed to meet productivity and quality, and maximizing the energy absorption rate .

Under such a goal, a laser apparatus for performing laser beam application processing including laser welding has a laser optical head composed of an optical system such as a focus lens for increasing the energy density of the laser beam.

In order to prevent the optical parts of the laser optical head from being damaged or contaminated by spatter (scattering dust and dust) or fumes which are processing byproducts generated during processing, the laser optical head has a laser (Not shown) together with an air nozzle 3 for forming an air jet to block the spatter S scattered from the lower portion of the optic head 1 are used.

That is, in the laser welding apparatus, the laser optical head 1 to which the laser beam LB is transmitted from the laser oscillator 5 through the optical fiber is provided at the tip of the arm 9 of the robot 7, 1, the air nozzle 3 is mounted.

The protective glass is attached to the cassette with a cassette using a drawer type cassette and is inserted into the side portion of the cassette or the air nozzle 3 screwed to the end of the laser optical head 1 is detached to attach the protective glass to the air nozzle 3 And the air nozzle 3 is screwed onto the laser optical head 1 again.

The laser beam LB is irradiated to the welded portion W of the workpiece 13 on the jig 11 through the laser optical head 1 to perform laser welding.

At this time, in order to prevent the spatter S generated and scattered from the welding portion W of the raw material 13 from damaging the optical system component (not shown) of the laser optical head 1, The spatter S scattered is blown out by forming an air jet in the lower part of the laser optical head 1. The protective glass blocks the spatter S which has not yet been sputtered, The optical system inside the head 1 is directly protected.

However, in the conventional protective glass as described above, since the air jet formed through the air nozzle 3 can not completely protect the optical system component of the laser optical head 1 from the spatter S scattered at high speed, The laser beam LB must be maintained at the highest transmittance at all times. However, when the position of the laser optical head 1 is located in a narrow working space, the exchange operation is difficult.

In the embodiment of the present invention, a plurality of ball stoppers, which are formed in the air nozzle, act on the engagement grooves formed on the circumferential surface of the glass frame of the protective glass so that the installation and replacement of the protective glass can be easily accomplished. To provide a protective glass unit.

In one or more embodiments of the present invention, there is provided a laser optical head including an air nozzle for spraying compressed air supplied through an air supply hose connected to one side of the air supply hose to block spatter scattered from a welded portion. A glass frame installed at a rim of the protective glass and having a latching groove formed along a periphery thereof; And at least two ball stoppers installed to protrude from the inner circumferential surface of the air nozzle so as to protrude from the inner circumferential surface of the air nozzle so as to fit the balls into the engagement grooves of the glass frame.

Further, the glass frame may be formed of a rubber ring having a fitting groove so that the rim of the protective glass is fitted along the inner circumferential surface.

Further, the retaining grooves have a semicircular groove.

In addition, the ball stopper may be fastened through at least two fastening holes radially penetrating the air nozzle.

The ball stopper may include a spherical ball; A stopper housing which receives the ball and is fastened to the air nozzle in a state where a part of the ball protrudes from the inner circumferential surface of the air nozzle; A spring for elastically supporting the ball in a state of being inserted into the stopper housing; And a cap coupled to a rear end of the stopper housing to support the spring.

In addition, the stopper housing may be screwed into a fastening hole formed radially through the air nozzle.

The spring may be a coil spring.

In the embodiment of the present invention, the ball of the ball stopper is caught in the engagement groove formed on the peripheral surface of the glass frame, so that the protection glass can be easily installed on the air nozzle and the replacement work can be easily accomplished.

Fig. 1 is a diagram showing the construction and use state of a general laser welding apparatus.
FIG. 2 is a configuration diagram of a laser optical head to which a protective glass unit according to an embodiment of the present invention is applied.
3 is an assembled cross-sectional view of an air nozzle to which a protective glass unit according to an embodiment of the present invention is applied.
4 is a partially cutaway perspective view of a glass frame of a protective glass unit according to an embodiment of the present invention.
5 is a sectional view of a ball stopper of a protective glass unit according to an embodiment of the present invention.
FIG. 6 is a state of use of a laser optical head to which a protective glass unit according to an embodiment of the present invention is applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In order to clearly illustrate the embodiments of the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the entire specification.

3 is a cross-sectional view of an air nozzle to which a protective glass unit according to an embodiment of the present invention is applied. FIG. 4 is a cross- FIG. 5 is a sectional view of a ball stopper of a protective glass unit according to an embodiment of the present invention. FIG. 5 is a partially cutaway perspective view of a glass frame of a protective glass unit according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, a protective glass unit for a laser optical head according to an embodiment of the present invention is installed inside an air nozzle 3 which is fastened to a lower portion of the laser optical head 1.

First, the air nozzle 3 is screwed to a lower mounting end 15 formed at a lower portion of the laser optical head 1.

That is, the air nozzle 3 is connected to the air supply hose 17 at one side and an air passage 19 connected to the air supply hose 17 is formed therein to inject air toward the weld W, .

Inside the air nozzle 3, a protective glass unit according to an embodiment of the present invention is installed.

That is, the protective glass unit is installed on the stepped surface F formed along the inner circumferential surface of the air nozzle 3.

The protective glass unit according to the embodiment of the present invention is composed of a protective glass 21, a glass frame 23, and a ball stopper 25.

Referring to FIG. 4, the protective glass 21 is formed in a circular shape, and the glass frame 23 is installed along the rim of the protective glass 21.

That is, the glass frame 23 is formed of a rubber ring in which an insertion groove 23a is formed so as to fit the rim of the protective glass 21 along the inner peripheral surface.

In addition, the glass frame 23 is formed with a latching groove 23b along the circumferential surface thereof so that the ball stopper 25 works.

At this time, the latching groove 23b may be a semi-circular groove.

The ball stopper 25 is installed such that a part of the ball 31 protrudes from the inner circumferential surface 27 of the air nozzle 3 so that the ball 31 is inserted into the engagement groove 23b of the glass frame 23 .

The ball stopper 25 is fastened through at least two fastening holes H formed in the air nozzle 3 and the fastening holes H are formed radially through the air nozzle 3 .

The number of the ball stoppers 25 may be two or more along the circumference of the air nozzle 3 but it is unnecessary to apply four or more ball stoppers 25, It is ideal to stably regulate the glass frame 23.

5, the ball stopper 25 includes a spherical ball 31 housed in the stopper housing 33, and the stopper housing 33 is fixed to the inner circumferential surface 27 of the air nozzle 3 And is screwed to each fastening hole (H) on the air nozzle (3) in a state in which a part of the ball (31) protrudes.

A coil spring 35 is inserted into the stopper housing 33 to elastically support the ball 31. A cap 37 is attached to a rear end of the stopper housing 33 to support the coil spring 35 Respectively.

6, the protective glass unit for a laser optical head having the above-described configuration is arranged so that the laser beam from the laser optical head 1 to the welded portion W of the material 13 on the jig 11 The spatters S generated and scattered at the welded portion W of the material 13 during the laser welding operation by irradiating the laser beam LB are blocked by the air jet sprayed through the air nozzle 3 The sputter S is directly cut off so as not to damage the optical system component of the laser optical head 1 when it flows into the air nozzle 3 without being damaged.

In the protective glass unit according to the embodiment of the present invention, when the contaminated protective glass 21 is replaced, the ball 31 of the ball stopper 25 is fitted to the stepped surface F of the air nozzle 3, The glass frame 23 in the state of being caught by the protective glass 21 can be easily removed by peeling it together with the protective glass 21.

That is, when the protective glass 21 is sucked and pulled down by using an adsorption cup (not shown) or the like, the ball 31 is pushed out from the engagement groove 23b of the glass frame 23 and is easily removed.

The glass frame 23 inserted into the rim of the protective glass 21 is pushed into the stepped surface F of the air nozzle 3 to assemble the protective glass 21 to be replaced. The ball 31 of the ball stopper 25 is fitted into the latching groove 23b of the ball stopper 25b.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

21: Protection glass
23: Glass frame
23a: fitting groove
23b:
25: Ball stopper
31: view
33: Stopper housing
35: coil spring
37: Cap

Claims (7)

And an air nozzle for spraying compressed air supplied through an air supply hose connected to one side of the air nozzle to block spatter scattered from the welded portion,
Protective glass;
A glass frame installed at a rim of the protective glass and having a latching groove formed along a periphery thereof;
At least two ball stoppers installed to protrude from the inner circumferential surface of the air nozzle so as to protrude from the inner circumferential surface of the air nozzle so as to fit the balls into the engaging grooves of the glass frame;
And a protective glass unit for the laser optical head. The method according to claim 1,
The glass frame
And a rubber ring in which a fitting groove is formed so that a rim of the protective glass is fitted along an inner peripheral surface of the rubber ring. The method according to claim 1,
The engagement groove
Wherein the protective glass unit comprises a semi-circular groove. The method according to claim 1,
The ball stopper
Wherein the air nozzle is fastened to the air nozzle through at least two fastening holes radially penetrating the air nozzle. The method according to claim 1 or 4,
The ball stopper
A spherical ball;
A stopper housing which receives the ball and is fastened to the air nozzle in a state where a part of the ball protrudes from the inner circumferential surface of the air nozzle;
A spring for elastically supporting the ball in a state of being inserted into the stopper housing; And
A cap coupled to a rear end of the stopper housing to support the spring;
And a protective glass unit for protecting the laser optical head. 6. The method of claim 5,
The stopper housing
And a screw is fastened to a fastening hole formed radially through the air nozzle. 6. The method of claim 5,
The spring
And a coil spring.
KR1020120132517A 2012-11-21 2012-11-21 Protective glass unit for laser optic head KR20140065776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120132517A KR20140065776A (en) 2012-11-21 2012-11-21 Protective glass unit for laser optic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120132517A KR20140065776A (en) 2012-11-21 2012-11-21 Protective glass unit for laser optic head

Publications (1)

Publication Number Publication Date
KR20140065776A true KR20140065776A (en) 2014-05-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120132517A KR20140065776A (en) 2012-11-21 2012-11-21 Protective glass unit for laser optic head

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KR (1) KR20140065776A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190061064A1 (en) * 2017-08-24 2019-02-28 Fanuc Corporation Galvano scanner and laser machining system
CN115229210A (en) * 2022-07-13 2022-10-25 中国民用航空飞行学院 Part repairing device based on material increase and decrease manufacturing
WO2023068843A1 (en) * 2021-10-20 2023-04-27 주식회사 엘지에너지솔루션 Laser welding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190061064A1 (en) * 2017-08-24 2019-02-28 Fanuc Corporation Galvano scanner and laser machining system
JP2019038007A (en) * 2017-08-24 2019-03-14 ファナック株式会社 Galvano-scanner and laser processing system
US11052491B2 (en) 2017-08-24 2021-07-06 Fanuc Corporation Galvano scanner and laser machining system
WO2023068843A1 (en) * 2021-10-20 2023-04-27 주식회사 엘지에너지솔루션 Laser welding device
CN115229210A (en) * 2022-07-13 2022-10-25 中国民用航空飞行学院 Part repairing device based on material increase and decrease manufacturing
CN115229210B (en) * 2022-07-13 2023-08-25 中国民用航空飞行学院 Part repairing device based on increase and decrease material manufacturing

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E902 Notification of reason for refusal
E601 Decision to refuse application