CN2774694Y - Laser welding supersonic lateral air curtain device - Google Patents
Laser welding supersonic lateral air curtain device Download PDFInfo
- Publication number
- CN2774694Y CN2774694Y CN 200420118096 CN200420118096U CN2774694Y CN 2774694 Y CN2774694 Y CN 2774694Y CN 200420118096 CN200420118096 CN 200420118096 CN 200420118096 U CN200420118096 U CN 200420118096U CN 2774694 Y CN2774694 Y CN 2774694Y
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- China
- Prior art keywords
- cavity
- baffle plate
- down arm
- section
- curtain device
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- Expired - Fee Related
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- 238000003466 welding Methods 0.000 title description 10
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 230000008602 contraction Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 2
- 238000004544 sputter deposition Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- Laser Beam Processing (AREA)
Abstract
The utility model relates to a supersonic and transverse air curtain device with laser weld joint, and belongs to the technical field of laser processing. The utility model is composed of a jet cavity body, a left installation arm, a right installation arm, an auxiliary baffle plate and a connecting piece, wherein an inner cavity of the jet cavity body is composed of a flat cavity and a Laval spray pipe structural cavity. Supersonic transverse air flow is formed on a spray nozzle of the jet cavity body, which effectively blows off sputtering and fume in laser weld joint. A negative pressure air flow channel is formed between the auxiliary baffle plate and the jet cavity body, which avoids generating air disturbance around the weld joint region caused by the negative pressure air flow which is generated by the air flow of the spray nozzle. The structure is compact and simple.
Description
Technical field
The utility model relates to a kind of horizontal air curtain device that the protection condenser lens is not polluted by splash when laser weld, belongs to technical field of laser processing.
Background technology
Laser weld has been widely used in fields such as Aero-Space, automobile making as a kind of high-quality, high accuracy, high-speed advanced welding method.In laser beam welding,, very easily cause the pollution of condenser lens and damage optical system components because material surface absorbs laser energy fusing and strong vaporization, weld fumes and splash greatlyyer rapidly.Eyeglass pollutes and causes laser beam to produce scattering, poor focusing.Working long hours focus drifting to occur, causes the laser power that is transferred to workpiece to incur loss, and makes the laser weldability variation.The frequent clean and the replacing of eyeglass have a strong impact on operating efficiency.A large amount of splashing makes the crystal eyeglass break because of the heat distortion.
Not contaminated for the protection optical system components, arrange under laser welding system that usually a horizontal air blowing curtain nozzle blows down splash and flue gas.The horizontal gas curtain nozzle of laser weld adopts the nozzle arrangements of straight tube or narrow slit form usually at present.The air velocity of the nozzle ejection of this structure is lower, and diffusion easily, can not effectively blow down splash; Because air-flow ejection back forms a negative pressuren zone, cause the disturbance of weld zone surrounding air simultaneously, air is involved in the protection-gas welding, influence welding quality.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of laser weld supersonic speed horizontal air curtain device; the horizontal air curtain device of this laser weld supersonic speed can not only protect optical system components not contaminated or few contaminated; overcome existing horizontal gas curtain nozzle and can not effectively blow down the shortcoming that generation is splashed in the laser beam welding; and can form a negative-pressure air-flow passage, thereby the negative-pressure air-flow of avoiding nozzle air current to produce causes weld zone surrounding air disturbance.
The horizontal air curtain device of a kind of laser weld supersonic speed of the present utility model is implemented according to the technical scheme of Fig. 1-Fig. 4.This device includes and sprays cavity and hold-down arm.It is characterized in that: between left hold-down arm 1 and right hold-down arm 3, its position is in the left end of left and right hold-down arm to injection cavity 2 by double team.The right-hand member bottom of left and right hold-down arm is connected with auxiliary baffle plate 4, and the spoke that spoke helps baffle plate to be provided with to be used for laser beam to pass through helps baffle plate circular hole 5.Spray the inner chamber of cavity and be made up of for 7 sections 8 sections in straight chamber and De Laval noz(zle) structure chamber, the inner chamber left port communicates with the screwed hole that is connected wireway 9 on the injection cavity.
The horizontal air curtain device of above-mentioned described laser weld supersonic speed, 7 sections parts in De Laval noz(zle) structure chamber in the inner chamber of injection cavity 2, its inner bottom surface is the plane, inner top surface is a Laval structure curved surface; This curved surface comprises contraction section 10, throat 11, initial bubble section 12 and parallel outlet section 13 from left to right successively.
Above-mentioned described laser weld has for forming the difference in height of negative-pressure air-flow passage between auxiliary baffle plate (4) and the injection cavity (2) with the horizontal air curtain device of supersonic speed, and this difference in height is 4～10mm.
The utility model utilizes the design of aerodynamics De Laval noz(zle) structural principle to spray cavity 2.See Fig. 2, shown in Figure 3.Spray the cavity curved sections and form, promptly shrink the back expansion structure earlier by contraction section 10, throat 11, initial bubble section 12 and parallel outlet section 13.The reason that adopts De Laval noz(zle) version why can produce supersonic airstream is: the contraction section in De Laval noz(zle), longshore current are to the reducing flow velocity is constantly increased of cavity cross-sectional area and pressure constantly reduces; At expansion segment, longshore current constantly increases flow velocity and pressure constantly reduces to the increase of cavity cross-sectional area.Mach number equals 1 at minimum cross section place (throat), and promptly air-flow velocity reaches the velocity of sound, and in expansion segment, supersonic airstream is quickened and forms in the flow expansion decompression subsequently.Therefore in De Laval noz(zle), air communication cross shrink nozzle and endways (throat) reach the velocity of sound, and then in expanding nozzle, continue to quicken to reach supersonic speed.Owing to need to obtain the horizontal gas curtain of certain width in the laser beam welding, and the airflow influence scope can not be too big, is designed to unsymmetric structure so will spray cavity.Asymmetric injection cavity is made of straight chamber 8 and De Laval noz(zle) structure chamber 7.It is that plane, inner top surface are the asymmetric pattern of De Laval noz(zle) structure curved surface that De Laval noz(zle) structure chamber also is inner bottom surface.If adopt the symmetrical circular air stream outlet, blow out air-flow with certain width, spraying the cavity outlet diameter will increase, it is big that the volume of nozzle will become, because the laser weld focal length is shorter, installing space is limited, so do not adopt the circular air stream outlet of symmetrical structure.
Be provided with auxiliary baffle plate 4 in the utility model device, form the negative-pressure air-flow passage between auxiliary baffle plate and the injection cavity, the negative-pressure air-flow of avoiding nozzle air current to produce causes weld zone surrounding air disturbance.
The horizontal air curtain device of a kind of laser weld supersonic speed of the present utility model ejects the thin layer supersonic airstream with certain width, and rapidly, effectively with in the welding process splashing and flue gas blows down, realize protection to optical system components; The negative-pressure air-flow passage that forms has guaranteed that weld zone surrounding air is not subjected to disturbance.The utility model apparatus structure compactness, simple and direct is easy to realize.
Description of drawings
The horizontal air curtain device three-dimensional view of Fig. 1 a kind of laser weld supersonic speed of the present utility model.
The A-A cross-sectional view of Fig. 2 Fig. 1.
Fig. 3 Fig. 2 partial enlarged drawing.
Fig. 4 device scheme of installation of the present utility model.
Among the figure, 1, left hold-down arm, 3, right hold-down arm 2, spray cavity, 4, auxiliary baffle plate,
5, auxiliary baffle plate circular hole, 6, installing hole, 7, De Laval noz(zle) structure chamber,
8, straight chamber, 9, connect the screwed hole of wireway, 10, contraction section, 11, throat,
12, initial bubble section, 13, the Parallel exporting section, 14, laser instrument,
15, laser Machining head, 16, welding work pieces, 17, laser beam,
18, the utility model device.
The specific embodiment
The horizontal air curtain device of a kind of laser weld supersonic speed of the utility model, require processing according to art designs, the inner chamber that sprays cavity 2 by Fig. 2 is made up of for 7 sections 8 sections in straight chamber and De Laval noz(zle) structure chamber, and the inner chamber left port communicates with the screwed hole that is connected wireway 9 on the injection cavity; As Fig. 3, the 7 sections parts in De Laval noz(zle) structure chamber, inner bottom surface is the plane, and inner top surface is a Laval structure curved surface, and this curved surface comprises contraction section 10, throat 11, initial bubble section 12 and parallel outlet section 13 from left to right successively.
This utility model device is pressed Fig. 1 assembling, and injection cavity 2, is connected with screw with left and right hold-down arm respectively between left hold-down arm 1 and right hold-down arm 3 by double team, and its position is in the left end of left and right hold-down arm; Auxiliary baffle plate 4 is installed in the right-hand member bottom of left and right hold-down arm with screw connecting mode, and auxiliary baffle plate is provided with and is used for the auxiliary baffle plate circular hole 5 that laser beam passes through; Auxiliary baffle plate 4 and the difference in height between the injection cavity 1 select 4,7 for use, during 10mm, all can form the negative-pressure air-flow passage.
As Fig. 4, this utility model device is installed together with screw connecting mode and laser Machining head by the installing hole on the left and right hold-down arm 6.
Claims (3)
1. the horizontal air curtain device of laser weld supersonic speed includes and sprays cavity and hold-down arm, it is characterized in that: between left hold-down arm (1) and right hold-down arm (3), its position is in the left end of left and right hold-down arm to injection cavity (2) by double team; The bottom of the right-hand member of left and right hold-down arm is connected with auxiliary baffle plate (4), and the spoke that spoke helps baffle plate to be provided with to be used for laser beam to pass through helps baffle plate circular hole (5); Spray the inner chamber of cavity and be made up of straight chamber (8) section and De Laval noz(zle) structure chamber (7) section, the inner chamber left port communicates with the screwed hole that is connected wireway (9) on the injection cavity.
2. the horizontal air curtain device of laser weld supersonic speed according to claim 1 is characterized in that: section part in De Laval noz(zle) structure chamber (7) in the inner chamber of injection cavity (2), and its inner bottom surface is the plane, inner top surface is a Laval structure curved surface; This curved surface comprises contraction section (10), throat (11), initial bubble section (12) and parallel outlet section (13) from left to right successively.
3. laser weld according to claim 1 is characterized in that with the horizontal air curtain device of supersonic speed: auxiliary baffle plate (4) with spray the difference in height that has between the cavity (2) for formation negative-pressure air-flow passage, this difference in height is 4～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118096 CN2774694Y (en) | 2004-10-29 | 2004-10-29 | Laser welding supersonic lateral air curtain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118096 CN2774694Y (en) | 2004-10-29 | 2004-10-29 | Laser welding supersonic lateral air curtain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2774694Y true CN2774694Y (en) | 2006-04-26 |
Family
ID=36748999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118096 Expired - Fee Related CN2774694Y (en) | 2004-10-29 | 2004-10-29 | Laser welding supersonic lateral air curtain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2774694Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157886A (en) * | 2011-02-14 | 2011-08-17 | 中国科学院光电技术研究所 | Gas curtain design method for sealing transmission channel in laser |
| CN103212806A (en) * | 2013-04-17 | 2013-07-24 | 鞍山煜宸科技有限公司 | Transverse air curtain for laser welding and use method thereof |
| CN105451926A (en) * | 2013-05-29 | 2016-03-30 | 里斯集团控股有限责任两合公司 | Crossjet assembly and method for carrying away contaminants |
| CN106271082A (en) * | 2016-08-22 | 2017-01-04 | 上海交通大学 | Protection air knife for laserHybrid welding |
| CN107782671A (en) * | 2017-10-25 | 2018-03-09 | 蓝靖 | The gas shield device of optical element in a kind of spectrometric instrument |
| CN108098167A (en) * | 2017-12-27 | 2018-06-01 | 洛阳鹏起实业有限公司 | Laser welding protective device |
| CN109514085A (en) * | 2018-11-29 | 2019-03-26 | 深圳泰德激光科技有限公司 | Laser soldering device |
| CN110744191A (en) * | 2019-10-22 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Welding device and welding method for inhibiting laser welding plume and controlling weld formation |
| CN116174892A (en) * | 2023-02-23 | 2023-05-30 | 山东省科学院激光研究所 | Programmable laser welding focusing system |
-
2004
- 2004-10-29 CN CN 200420118096 patent/CN2774694Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157886B (en) * | 2011-02-14 | 2012-05-30 | 中国科学院光电技术研究所 | Gas curtain design method for sealing transmission channel in laser |
| CN102157886A (en) * | 2011-02-14 | 2011-08-17 | 中国科学院光电技术研究所 | Gas curtain design method for sealing transmission channel in laser |
| CN103212806A (en) * | 2013-04-17 | 2013-07-24 | 鞍山煜宸科技有限公司 | Transverse air curtain for laser welding and use method thereof |
| US10092981B2 (en) | 2013-05-29 | 2018-10-09 | Kuka Deutschland Gmbh | Crossjet assembly and method for carrying away contaminants |
| CN105451926A (en) * | 2013-05-29 | 2016-03-30 | 里斯集团控股有限责任两合公司 | Crossjet assembly and method for carrying away contaminants |
| CN105451926B (en) * | 2013-05-29 | 2018-06-15 | 里斯集团控股有限责任两合公司 | Crosswise jet device and the method for guiding pollutant |
| CN106271082A (en) * | 2016-08-22 | 2017-01-04 | 上海交通大学 | Protection air knife for laserHybrid welding |
| CN107782671A (en) * | 2017-10-25 | 2018-03-09 | 蓝靖 | The gas shield device of optical element in a kind of spectrometric instrument |
| CN108098167A (en) * | 2017-12-27 | 2018-06-01 | 洛阳鹏起实业有限公司 | Laser welding protective device |
| CN109514085A (en) * | 2018-11-29 | 2019-03-26 | 深圳泰德激光科技有限公司 | Laser soldering device |
| CN110744191A (en) * | 2019-10-22 | 2020-02-04 | 大族激光科技产业集团股份有限公司 | Welding device and welding method for inhibiting laser welding plume and controlling weld formation |
| CN110744191B (en) * | 2019-10-22 | 2021-10-29 | 大族激光科技产业集团股份有限公司 | Welding device and welding method for inhibiting laser welding plume and controlling weld formation |
| CN116174892A (en) * | 2023-02-23 | 2023-05-30 | 山东省科学院激光研究所 | Programmable laser welding focusing system |
| CN116174892B (en) * | 2023-02-23 | 2024-01-26 | 山东省科学院激光研究所 | Programmable laser welding focusing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |