CN105478416A - Air curtain protection device for laser cleaning and protection method - Google Patents
Air curtain protection device for laser cleaning and protection method Download PDFInfo
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- CN105478416A CN105478416A CN201610051050.1A CN201610051050A CN105478416A CN 105478416 A CN105478416 A CN 105478416A CN 201610051050 A CN201610051050 A CN 201610051050A CN 105478416 A CN105478416 A CN 105478416A
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- air outlet
- laser
- outlet array
- air
- gas curtain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Measuring Cells (AREA)
- Cleaning In General (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides an air curtain protection device for laser cleaning and a protection method and can effectively collect pollutants in laser cleaning, guarantee cleanliness of a laser lens and prevent lens glass from being broken and damaged. The air curtain protection device for laser cleaning comprises a protection cover, a first air outlet array, a suction port and a second air outlet array, wherein the protection cover is provided with a horn-shaped inner chamber with a thin upper part and a thick lower part, the upper end of the inner chamber is in sleeve joint with the laser cleaning lens, and an opening is formed in the lower end of the inner chamber; the first air outlet array is formed in the side wall of the inner chamber, and protection space surrounding the laser lens is formed by compressed air exhausted by the first air outlet array and side walls; the suction port is formed sideways below the protection cover; the second air outlet array is formed in the peripheral edge of the lower end of the inner chamber, compressed air exhausted by the second air outlet array surrounds a laser irradiation area on the surface of a cleaned workpiece, and projection of air flow at each air outlet of the second air outlet array on the horizontal plane points to the suction port.
Description
Technical field
The present invention relates to gas curtain protector and the means of defence of Laser Processing guard technology, particularly laser cleaning.
Background technology
Laser processing technology utilizes laser beam and material to interact, material (comprising metal with nonmetal) is cut, welds, surface treatment, punching and micro-machined a special kind of skill.
Laser cleaning is the one in laser processing technology, and it carries out optical physics reaction by between the short-pulse laser of high strength and pollution layer.Its physical principle can be summarized as follows:
A) laser instrument launch light beam absorb by the pollution layer on pending surface.
B) absorption of macro-energy forms the plasma (the unstable gas of highly ionized) sharply expanded, and produces shock wave.
C) shock wave makes pollutant become fragment and disallowable.
D) light impulse length is sufficiently short, to avoid the heat accumulation making processed surface be destroyed.
E) experiment shows that plasma results from metal surface when metal surface there being oxide.
Fig. 1 is laser cleaning operation principle schematic diagram, as shown in Figure 1, the laser that laser instrument 1 produces is transferred to condenser lens 3 through flexible optical fiber 2, arrive at the surface of cleaning workpiece 5 from the endoporus of washer jet 4 after focusing, usual use blow-out nozzle, by means of the little hole nozzle with laser coaxial, the gas with certain pressure is blown to cleaning area, gas supplies by assisting source of the gas 6, the Main Function of blowing blows away vapour, and prevent camera lens by splash and smoke contamination, simultaneously, oxidation institute's liberated heat can also be taken away or prevent surface oxidation, play purification surface, the heat effect of strengthening laser and material.
But, the setting of existing blow-out nozzle is only rough being blown off by pollutant, is difficult to definitely prevent a small amount of contaminant infiltration or travel back across near camera lens by the mode of convection current in process of blowing off, and if the glass of laser lens attached to pollutant, will absorb and assemble amount of heat, causing lens element to burst damage, causing production loss, and, do not carry out effective collection of pollutant, the pollutant toxicity of cleaning metal surface gasification is very large, can bring infringement to the health of operating personnel.
Summary of the invention
The object of the invention is gas curtain protector and means of defence that a kind of laser cleaning will be provided, effectively can collect the carrying out of the pollutant in laser cleaning, and can guarantee that laser lens cleans, prevent lens element from bursting damage.
To achieve these goals, the invention provides a kind of gas curtain protector of laser cleaning, comprising:
Protective cover, has for up-thin-low-thick tubaeform inner chamber, the upper end socket laser cleaning camera lens of described inner chamber, and the lower end of described inner chamber has opening;
The the first air outlet array be connected with high pressure airline, is arranged on the sidewall of described inner chamber, and the compressed air that described first air outlet array is discharged and described sidewall form the protective zone surrounding laser lens;
Pump orifice, is arranged on the side-lower of described protective cover;
The the second air outlet array be connected with described high pressure airline, is arranged on the periphery of described inner chamber lower end, and the compressed air that described second air outlet array is discharged is around by the laser-irradiated domain on cleaning workpiece surface; The air-flow of each air outlet of described second air outlet array points to described pump orifice in the projection of horizontal plane.
Preferably, in above-mentioned gas curtain protector, described sidewall has the wind-supplying mouth supplementing air in described protective zone;
Described wind-supplying mouth has filter.
Preferably, in above-mentioned gas curtain protector, described pump orifice is fixedly connected with described protective cover.
Preferably, in above-mentioned gas curtain protector, described pump orifice is fixedly connected with described laser cleaning camera lens.
Preferably, in above-mentioned gas curtain protector, also comprise: the 3rd air outlet array, is arranged on the sidewall of described inner chamber, laser cleaning camera lens described in the direct purge of compressed air that described 3rd air outlet array is discharged.
Preferably, in above-mentioned gas curtain protector, also comprise control unit, connect the air-out by-pass valve control of described 3rd air outlet array.
Preferably, in above-mentioned gas curtain protector, the air-out direction of described first air outlet array is downward-sloping, and the compressed air that described first air outlet array is discharged is advanced downwards along described sidewall.
The present invention also provides a kind of means of defence for above-mentioned gas curtain protector, comprising:
Be connected on by described shielding cover on described laser cleaning camera lens, the described opening of described protective cover aims at described laser-irradiated domain;
Described first air outlet array connects pressure-air, forms the described protective zone surrounding described laser lens, makes the pollutant in the vapour of process and external environment condition be blocked in outside described protective zone;
Described second air outlet array connects pressure-air, forms the gas curtain around described laser-irradiated domain;
Open described pump orifice, open described laser lens, the described vapour of described laser-irradiated domain is isolated by described gas curtain restriction and is drawn in described pump orifice.
The embodiment of the present invention has following technique effect:
1), in the embodiment of the present invention, the compressed air composition that the first air outlet array 21 and the second air outlet array 22 are discharged covers the closed gas curtain of laser-irradiated domain 50, and by pump orifice 40, the particulate pollutant in closed gas curtain is collected process.Thus preventing pollution thing is diffused in environment, ensure the health of operating personnel.
2) in the embodiment of the present invention, the compressed air that first air outlet array 21 is discharged and described sidewall form the protective zone 210 surrounding laser lens, not only preventing pollution thing is diffused into laser lens from laser-irradiated domain 50, also the pollutant in external environment condition can be prevented to be infected with camera lens, to prevent camera lens from absorbing heat because of pollutants and burst.Thus reduction production cost.
3) in the embodiment of the present invention, laser cleaning camera lens described in the direct purge of compressed air that 3rd air outlet array 23 is discharged, just in case have pollutant at this by endothermic gasification, also can not rest on camera lens surface, prevent camera lens from bursting, and can also camera lens surface cooling be given.The air of blowing over camera lens surface can be swept along in the air-flow that imports and produce to the first air outlet array 21, enter in the closed gas curtain of below after arriving at sidewall, namely protective zone 210 has self-purification function, and this greatly reduces the risk that camera lens bursts because of pollutants.
According to hereafter by reference to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will understand above-mentioned and other objects, advantage and feature of the present invention more.
Accompanying drawing explanation
Hereinafter describe specific embodiments more of the present invention with reference to the accompanying drawings by way of example, and not by way of limitation in detail.Reference numeral identical in accompanying drawing denotes same or similar parts or part.It should be appreciated by those skilled in the art that these accompanying drawings may not be drawn in proportion.In accompanying drawing:
Fig. 1 is laser cleaning operation principle schematic diagram;
Fig. 2 is the operating diagram of the gas curtain protector of laser cleaning of the present invention;
Fig. 3 is the gas curtain perspective view of the gas curtain protector of laser cleaning of the present invention.
Detailed description of the invention
Fig. 2 is the operating diagram of the gas curtain protector of laser cleaning of the present invention, and as shown in Figure 2, the embodiment of the present invention provides a kind of gas curtain protector of laser cleaning, comprising:
Protective cover 20, has for up-thin-low-thick tubaeform inner chamber, the upper end socket laser cleaning camera lens 30 of described inner chamber, and the lower end of described inner chamber has opening;
The the first air outlet array 21 be connected with high pressure airline, is arranged on the sidewall of described inner chamber, and the compressed air that described first air outlet array is discharged and described sidewall form the protective zone 210 surrounding laser lens;
Pump orifice 40, is arranged on the side-lower of described protective cover 20;
The the second air outlet array 22 be connected with high pressure airline, be arranged on the periphery of described inner chamber lower end, Fig. 3 is the gas curtain perspective view of the gas curtain protector of laser cleaning of the present invention, as shown in Figure 3, the described second air outlet array compressed air of discharging is around by the laser-irradiated domain 50 on cleaning workpiece surface; The air-flow of each air outlet of described second air outlet array points to described pump orifice 40 in the projection of horizontal plane.
Visible, in the embodiment of the present invention, the compressed air composition that the first air outlet array 21 and the second air outlet array 22 are discharged covers the closed gas curtain of laser-irradiated domain 50, and by pump orifice 40, the particulate pollutant in closed gas curtain is collected process.
The compressed air that first air outlet array 21 is discharged and described sidewall form the protective zone 210 surrounding laser lens, not only preventing pollution thing is diffused into laser lens from laser-irradiated domain 50, also the pollutant in external environment condition can be prevented to be infected with camera lens, to prevent camera lens from absorbing heat because of pollutants and burst.
Wherein, the first air outlet array 21 is the one group of circular hole arranged along sidewall semicircular in shape.
Inner chamber lower end is circumferential, and the second air outlet array 22 is also circumferentially shape arrangement along inner chamber lower end.
As shown in Figure 2, the air-out direction of described first air outlet array 21 is downward-sloping, after the compressed air that described first air outlet array is discharged arrives at sidewall, advances downwards, for supplementary air is carried out in closed gas curtain inside along described sidewall.And in order to prevent protective zone 210 inside from producing negative pressure, in another embodiment of the present invention, described sidewall having the wind-supplying mouth 24 supplementing air in described protective zone, described wind-supplying mouth has filter, prevents the pollutant in external environment condition from entering.
Because laser cleaning camera lens 30 and protective cover 20 can move in cleaning process, in order to ensure the corresponding of closed gas curtain and pump orifice, described pump orifice can be fixedly connected with described protective cover, or described pump orifice is fixedly connected with described laser cleaning camera lens, thus pump orifice also with protective cover 20 synchronizing moving.
As shown in Figure 2, in another embodiment of the present invention, also comprise: the 3rd air outlet array 23, is arranged on the sidewall of described inner chamber, laser cleaning camera lens described in the direct purge of compressed air that described 3rd air outlet array is discharged.This makes to produce air flowing on laser cleaning camera lens surface, just in case have pollutant at this by endothermic gasification, also can not rest on camera lens surface, prevent camera lens from bursting, and can also give camera lens surface cooling.Further, the air of blowing over camera lens surface can be swept along in the air-flow that imports and produce to the first air outlet array 21, enter after arriving at sidewall in the closed gas curtain of below, namely protective zone 210 has self-purification function, and this greatly reduces the risk that camera lens bursts because of pollutants.
Because the possibility that protective zone 210 enters pollutant is very little, 3rd air outlet array need not blow always, so can also arrange control unit, connects the air-out by-pass valve control of described 3rd air outlet array, open a valve at set intervals to clear up, with economize energy.
The present invention also provides a kind of means of defence for above-mentioned gas curtain protector, comprising:
Be connected on by described shielding cover on described laser cleaning camera lens, the described opening of described protective cover aims at described laser-irradiated domain;
Described first air outlet array connects pressure-air, forms the described protective zone surrounding described laser lens, makes the pollutant in the vapour of process and external environment condition be blocked in outside described protective zone;
Described second air outlet array connects pressure-air, forms the gas curtain around described laser-irradiated domain;
Open described pump orifice, open described laser lens, the described vapour of described laser-irradiated domain is isolated by described gas curtain restriction and is drawn in described pump orifice.
As from the foregoing, the present invention has following advantage:
1), in the embodiment of the present invention, the compressed air composition that the first air outlet array 21 and the second air outlet array 22 are discharged covers the closed gas curtain of laser-irradiated domain 50, and by pump orifice 40, the particulate pollutant in closed gas curtain is collected process.Thus preventing pollution thing is diffused in environment, ensure the health of operating personnel.
2) in the embodiment of the present invention, the compressed air that first air outlet array 21 is discharged and described sidewall form the protective zone 210 surrounding laser lens, not only preventing pollution thing is diffused into laser lens from laser-irradiated domain 50, also the pollutant in external environment condition can be prevented to be infected with camera lens, to prevent camera lens from absorbing heat because of pollutants and burst.Thus reduction production cost.
3) in the embodiment of the present invention, laser cleaning camera lens described in the direct purge of compressed air that 3rd air outlet array 23 is discharged, just in case have pollutant at this by endothermic gasification, also can not rest on camera lens surface, prevent camera lens from bursting, and can also camera lens surface cooling be given.The air of blowing over camera lens surface can be swept along in the air-flow that imports and produce to the first air outlet array 21, enter in the closed gas curtain of below after arriving at sidewall, namely protective zone 210 has self-purification function, and this greatly reduces the risk that camera lens bursts because of pollutants.
So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present invention is illustrate and described herein detailed, but, without departing from the spirit and scope of the present invention, still can directly determine or derive other modification many or amendment of meeting the principle of the invention according to content disclosed by the invention.Therefore, scope of the present invention should be understood and regard as and cover all these other modification or amendments.
Claims (8)
1. a gas curtain protector for laser cleaning, is characterized in that, comprising:
Protective cover, has for up-thin-low-thick tubaeform inner chamber, the upper end socket laser cleaning camera lens of described inner chamber, and the lower end of described inner chamber has opening;
The the first air outlet array be connected with high pressure airline, is arranged on the sidewall of described inner chamber, and the compressed air that described first air outlet array is discharged and described sidewall form the protective zone surrounding laser lens;
Pump orifice, is arranged on the side-lower of described protective cover;
The the second air outlet array be connected with described high pressure airline, is arranged on the periphery of described inner chamber lower end, and the compressed air that described second air outlet array is discharged is around by the laser-irradiated domain on cleaning workpiece surface; The air-flow of each air outlet of described second air outlet array points to described pump orifice in the projection of horizontal plane.
2. gas curtain protector according to claim 1, is characterized in that,
Described sidewall has the wind-supplying mouth supplementing air in described protective zone;
Described wind-supplying mouth has filter.
3. gas curtain protector according to claim 1, is characterized in that,
Described pump orifice is fixedly connected with described protective cover.
4. gas curtain protector according to claim 1, is characterized in that,
Described pump orifice is fixedly connected with described laser cleaning camera lens.
5. gas curtain protector according to claim 1, is characterized in that, also comprise: the 3rd air outlet array, is arranged on the sidewall of described inner chamber, laser cleaning camera lens described in the direct purge of compressed air that described 3rd air outlet array is discharged.
6. gas curtain protector according to claim 5, is characterized in that, also comprise control unit, connects the air-out by-pass valve control of described 3rd air outlet array.
7. gas curtain protector according to claim 1, is characterized in that, the air-out direction of described first air outlet array is downward-sloping, and the compressed air that described first air outlet array is discharged is advanced downwards along described sidewall.
8., for a means of defence for gas curtain protector according to claim 1, it is characterized in that, comprising:
Be connected on by described shielding cover on described laser cleaning camera lens, the described opening of described protective cover aims at described laser-irradiated domain;
Described first air outlet array connects pressure-air, forms the described protective zone surrounding described laser lens, makes the pollutant in the vapour of process and external environment condition be blocked in outside described protective zone;
Described second air outlet array connects pressure-air, forms the gas curtain around described laser-irradiated domain;
Open described pump orifice, open described laser lens, the described vapour of described laser-irradiated domain is isolated by described gas curtain restriction and is drawn in described pump orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051050.1A CN105478416B (en) | 2016-01-27 | 2016-01-27 | The gas curtain protector and means of defence of laser cleaning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051050.1A CN105478416B (en) | 2016-01-27 | 2016-01-27 | The gas curtain protector and means of defence of laser cleaning |
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| Publication Number | Publication Date |
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| CN105478416A true CN105478416A (en) | 2016-04-13 |
| CN105478416B CN105478416B (en) | 2017-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610051050.1A Active CN105478416B (en) | 2016-01-27 | 2016-01-27 | The gas curtain protector and means of defence of laser cleaning |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436260A (en) * | 2018-04-10 | 2018-08-24 | 上海柏楚电子科技有限公司 | A kind of laser cutting machine lens protection air blowing method |
| CN111541836A (en) * | 2020-05-10 | 2020-08-14 | 王玉林 | Dust removal heat dissipation type watch-dog |
| CN116000020A (en) * | 2022-12-05 | 2023-04-25 | 苏州天准科技股份有限公司 | Composite cleaning equipment and composite cleaning detection method for plate surfaces |
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| JPH11347773A (en) * | 1998-06-03 | 1999-12-21 | Amada Eng Center Co Ltd | Laser beam machining head |
| CN202367353U (en) * | 2011-12-02 | 2012-08-08 | 中国兵器工业第五二研究所 | Protective air curtain generating device for focus lamp in laser-arc hybrid welding |
| 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 |
| JP2014161873A (en) * | 2013-02-25 | 2014-09-08 | Disco Abrasive Syst Ltd | Laser processing device |
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2016
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11347773A (en) * | 1998-06-03 | 1999-12-21 | Amada Eng Center Co Ltd | Laser beam machining head |
| CN202367353U (en) * | 2011-12-02 | 2012-08-08 | 中国兵器工业第五二研究所 | Protective air curtain generating device for focus lamp in laser-arc hybrid welding |
| JP2014161873A (en) * | 2013-02-25 | 2014-09-08 | Disco Abrasive Syst Ltd | Laser processing device |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436260A (en) * | 2018-04-10 | 2018-08-24 | 上海柏楚电子科技有限公司 | A kind of laser cutting machine lens protection air blowing method |
| CN111541836A (en) * | 2020-05-10 | 2020-08-14 | 王玉林 | Dust removal heat dissipation type watch-dog |
| CN111541836B (en) * | 2020-05-10 | 2021-12-10 | 淮北中易光电科技有限公司 | Dust removal heat dissipation type watch-dog |
| CN116000020A (en) * | 2022-12-05 | 2023-04-25 | 苏州天准科技股份有限公司 | Composite cleaning equipment and composite cleaning detection method for plate surfaces |
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| CN105478416B (en) | 2017-08-08 |
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