CN110385313A - High power laser light cleaning system based on laser array and bundling optical fiber - Google Patents
High power laser light cleaning system based on laser array and bundling optical fiber Download PDFInfo
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- CN110385313A CN110385313A CN201910680045.0A CN201910680045A CN110385313A CN 110385313 A CN110385313 A CN 110385313A CN 201910680045 A CN201910680045 A CN 201910680045A CN 110385313 A CN110385313 A CN 110385313A
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- 238000007493 shaping process Methods 0.000 claims abstract description 14
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Classifications
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4012—Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
Abstract
The invention discloses a kind of high power laser light cleaning system based on laser array and bundling optical fiber, including laser array, bundling optical fiber and the laser export head being connect with bundling optical fiber output end, the laser array includes the laser element of several array distributions, the bundling optical fiber includes being formed by several with the one-to-one transmission fiber boundling of each laser element, the laser that each laser element generates is transferred to laser export head through corresponding transmission fiber respectively, and by exporting outward after laser export head collimation, shaping and focusing.Using above technical scheme, the total energy flow size of outgoing laser beam can be neatly controlled by laser array cooperation bundling optical fiber, the energy-flux density for exporting laser is high, the energy that needs can be rapidly achieved carries out laser cleaning, greatly improve cleaning efficiency and cleaning effect, the scope of application is increased, can be realized high efficiency, a wide range of, high quality, low cost laser cleaning operation.
Description
Technical field
The present invention relates to laser surface treating technology fields, and in particular to a kind of based on laser array and bundling optical fiber
High power laser light cleaning system.
Background technique
In industrial production and daily life, various kinds of equipment and product surface can inevitably adhere to it is from environment or
Each pollutant that self-operating generates.These pollutants can surface aesthetic to equipment and product and functional performance generate it is serious
It influences.In addition, be in throughout the year due to ship in the environment of high salt humidity in the daily maintenance of ship and aircraft, ship
It is very easy to corrosion everywhere, likewise, being also required to thoroughly remove paint layer from surface during the regular maintenance of aircraft.
Conventional way is to remove these pollutants using the cleaning means of a series of physical or chemistry at present.Hand
Work/mechanical grinding method there are it is time-consuming and laborious, be easy to damage substrate, working environment is poor the disadvantages of；There is cleaning choosing in chemical cleaning method
Selecting property is strong, the recycling of chemical agent and the problems such as emission treatment is difficult, environmental pollution is serious；Shot-peening ablution there are cost compared with
Height, large labor intensity endanger the disadvantages of big to operator.Therefore, there are environmental pollutions, efficiency for conventional clean technologies and method
Lowly, the disadvantages of large labor intensity, rapid wear object.
Therefore, it has come into being a kind of laser cleaning technique, laser cleaning irradiates work using the laser beam of high-energy density
Part surface makes the dirt, rust staining or coating on surface that flash evapn or removing occur, to reach purifying technical process.Swash
Light irradiates body surface to be cleaned at least and can produce the effect of three aspects: 1) thermal expansion effects, that is, utilizes substrate and surface
Pollutant keeps substrate and surface contaminants absorption energy production heat swollen the difference of a certain wavelength laser energy absorption coefficient
It is swollen, so that substrate be overcome to fall off the adsorption capacity of pollutant；2) photodegradation or phase transformation of molecule, i.e., make soil molecules in moment
Or the vaporization of auxiliary liquid film, decomposition, evaporation or the bumping made one to coat, keep surface smut loose and act on this to be detached from substrate table
Face；3) the impact vibration effect of laser pulse makes light beam be changed into sound using high-frequency pulse laser irradiation surface to be cleaned
Wave, which generates resonance, makes schmutzband or coagulation vibrate fragmentation.Laser cleaning technique has environmentally protective, fine accurate, lossless micro-
The advantages that damage, long distance high efficiency, laser parameter can be targetedly adjusted, a variety of surface contaminants be carried out safely and effectively clear
It washes.
Existing laser cleaning system is main although having differences in laser type, laser parameter, operating method
It is all using pulse or continuous laser as single energy field action in subject surface, so that the effect of cleaning is by a foregone conclusion
Limit；And laser power is smaller, and cleaning efficiency also will receive limitation.The laser more especially exported using single fiber,
It when the width of workpiece to be cleaned is larger, needs to increase the distance between workpiece surface and beam alignment system, to will lead to
The laser facula area for being radiated at workpiece surface it is excessive and can metric density it is too low, not can guarantee cleaning quality and cleaning effect
Rate.
Solving problem above becomes the task of top priority.
Summary of the invention
The technical issues of to solve existing laser cleaning system cleaning quality and inefficiency, the present invention provides a kind of bases
In the high power laser light cleaning system of laser array and bundling optical fiber.
Its technical solution is as follows:
A kind of high power laser light cleaning system based on laser array and bundling optical fiber, is characterized by, including laser
Device array, bundling optical fiber and the laser export head connecting with bundling optical fiber output end, the laser array include several battle arrays
The laser element of column distribution, the bundling optical fiber include by several and one-to-one transmission fiber collection of each laser element
Shu Ercheng, the laser that each laser element generates are transferred to laser export head through corresponding transmission fiber respectively, and by laser
It is exported outward after export head collimation, shaping and focusing.
Using the above structure, it is defeated that the laser that multiple laser elements generate by bundling optical fiber is transferred to laser export head
Out, also, by blocking, the modularized design to laser array, can each laser element of independent control it is total to control
Output power, each laser element can synchronism output, can also the parameters such as independent control output power, repetition rate.With tradition
Single laser cleaning technique compare, the energy-flux density for exporting laser is high, and being rapidly achieved the energy of needs, to carry out laser clear
Wash, greatly improve cleaning efficiency and cleaning effect, increase the scope of application, can be realized high efficiency, a wide range of, high quality,
The laser cleaning operation of low cost.
As preferred: laser is introduced the defeated of corresponding transmission fiber each by an output optical fibre by the laser element
Enter in end.Using the above structure, the mode directly transmitted compared to space, more reliable and more stable, external interference resistance is strong.
As preferred: passing through optical-fiber laser coupling between the input terminal of the bundling optical fiber and the output end of each output optical fibre
Component connection is closed, by the laser coupled of each output optical fibre output into corresponding transmission fiber.It is connected using coupling unit
Mode, flexibility is high, is easy to adjust the quantity of coupling optical fiber according to the actual situation.
As preferred: the output end of each output optical fibre respectively corresponds the input terminal welding of transmission fiber.Using molten
The mode connect, energy attenuation are small.
As preferred: the input terminal of the bundling optical fiber is provided with space laser optical coupling part, each laser list
The laser equal directive of the member sending space laser optical coupling part, and corresponding transmission light is introduced by space laser optical coupling part
In fine input terminal.Using the above structure, compared to the mode of optical fiber transmission, cost is lower.
As preferred: the output end of each transmission fiber is distributed for linear array, or is distributed for rectangular array, or
For circular array distribution.Using the above structure, it can neatly be selected according to specific application scenarios, for different breadths
Cleaning scene, bundling optical fiber can arrange with diversified forms, improve working efficiency.
As preferred: the laser export head includes coupling the collimation mirror unit, galvanometer unit, beam shaping being sequentially arranged
Unit and light beam focusing unit are homogenized, the output end of each transmission fiber is connect with the input terminal of coupling collimation mirror unit.Using
The above structure, laser beam become directional light through the collimating effect of overcoupling collimating mirror unit, and collimated laser beam passes through galvanometer unit,
Galvanometer eyeglass is in the driving lower swing of galvanometer motor, to keep the flare of galvanometer eyeglass mobile in space, which passes through again
It crosses shaping and homogenizes unit, form the uniform hot spot of Energy distribution, cleaning object surface shape is finally focused on by light beam focusing unit
At cleaning laser.Wherein, the hot spot that the uniform energy-flux density of unit formation is homogenized by beam shaping, avoids in cleaning process
Stigma existing cleaning non-uniform phenomenon when being connected.
As preferred: being provided with auxiliary unit in the laser export head, which includes for collecting laser
The dust collect plant of fugitive dust and the blowning installation for blowing to laser export head window glass near export head.Using the above knot
Structure can guarantee that laser cleaning continues efficiently to carry out.
As preferred: further include water cooling unit, the circulation waterway flowing through laser array of the water cooling unit, bundling optical fiber and
Laser export head.Using the above structure, it can effectively radiate to laser array, bundling optical fiber and laser export head,
Guarantee that stablizing for laser cleaning carries out.
Compared with prior art, beneficial effects of the present invention:
Using the high power laser light cleaning system based on laser array and bundling optical fiber of above technical scheme, structure is new
Grain husk, it is ingenious in design, the total energy flow size of outgoing laser beam can be neatly controlled by laser array cooperation bundling optical fiber, it is defeated
The energy-flux density of laser is high out, and the energy that can be rapidly achieved needs carries out laser cleaning, greatly improves cleaning efficiency and clear
Effect is washed, the scope of application is increased, can be realized high efficiency, a wide range of, high quality, low cost laser cleaning operation.
Detailed description of the invention
Fig. 1 is that the present invention uses optical fiber transmission mode, couples output optical fibre and transmission light by optical-fiber laser coupling unit
Fine schematic diagram；
Fig. 2 is that the present invention uses optical fiber transmission mode, the schematic diagram of output optical fibre and transmission fiber welding；
Fig. 3 is the schematic diagram that the present invention uses space direct mode；
Fig. 4 is the schematic diagram of the one of embodiment of laser export head；
Fig. 5 is the schematic diagram of transmission fiber output end arrangement mode.
Specific embodiment
The invention will be further described with attached drawing with reference to embodiments.
As shown in Figure 1-Figure 3, a kind of high power laser light cleaning system based on laser array and bundling optical fiber, including swash
Light device array 1, bundling optical fiber 2 and the laser export head 3 connecting with 2 output end of bundling optical fiber, the laser array 1 include
The laser element 11 of several array distributions, the bundling optical fiber 2 include being corresponded by several with each laser element 11
21 boundling of transmission fiber form, the laser that each laser element 11 generates is transferred to through corresponding transmission fiber 21 sharp respectively
Light output head 3, and by being exported outward after the collimation of laser export head 3, shaping and focusing, it treats cleaning workpiece 8 and is cleaned, laser
The object of cleaning includes but is not limited to: the removal of metal surface paint layer, rusty scale；Oxidation on metal surface layer removal；Pre- place before welding
Reason is post-processed with welding；The removal etc. of composite material surface coating.
Each laser element 11 mainly has optical fiber transmission and space directly to transmit two with the transmission of corresponding transmission fiber 21
The working laser output mode of kind mode, laser element 11 can export for continuous, quasi-continuous or pulse, including but not limited to
Nd:YAG solid state laser, TEA CO2Any one in laser, optical fiber laser or semiconductor laser.By to sharp
Blocking, the modularized design of light device array 1, can independent control each laser element 11 control gross output, each
Laser element 11 can synchronism output, can also the parameters such as independent control output power, repetition rate.
Transmit about optical fiber: referring to Figure 1 and Fig. 2, the laser element 11 will each by an output optical fibre 12
Laser is introduced into the input terminal of corresponding transmission fiber 21.Specifically, the connection of each output optical fibre 12 and corresponding transmission fiber 21
There are mainly two types of for mode:
Mode one: referring to Figure 1, lead between the input terminal of the bundling optical fiber 2 and the output end of each output optical fibre 12
The connection of optical-fiber laser coupling unit 7 is crossed, the laser coupled that each output optical fibre 12 is exported is into corresponding transmission fiber 21.
By the way of coupling unit connection, flexibility is high, is easy to adjust the quantity of coupling optical fiber according to the actual situation.
Mode two: referring to Fig. 2, and the output end of each output optical fibre 12 respectively corresponds the input terminal of transmission fiber 21
Welding.By the way of welding, energy attenuation is small.
It is directly transmitted about space: referring to Fig. 3, the input terminal of the bundling optical fiber 2 is provided with space laser optocoupler
Component 6 ', the laser equal directive of each sending of the laser element 11 space laser optical coupling part 6 ' are closed, and is swashed by space
Light optical coupling part 7 ' is introduced into the input terminal of corresponding transmission fiber 21.In this way, the mode transmitted compared to optical fiber, at
This is lower.
Fig. 5 is referred to, in order to be better adapted to specific application scenarios, the output of each transmission fiber 21
End is distributed for linear array, or is distributed for rectangular array, or be distributed for circular array.
Fig. 4 is referred to, the laser export head 3 includes coupling the collimation mirror unit 31, galvanometer unit 32, light being sequentially arranged
Beam shaping homogenizes unit 33 and light beam focusing unit 34, the output end of each transmission fiber 21 with couple the defeated of collimation mirror unit 31
Enter end connection.Laser beam becomes directional light through the collimating effect of overcoupling collimating mirror unit 31, and collimated laser beam passes through galvanometer list
Member 32, galvanometer eyeglass galvanometer motor driving lower swing, to keep the flare of galvanometer eyeglass mobile in space, the hot spot
Unit 33 is homogenized using shaping, forms the uniform hot spot of Energy distribution, cleaning pair is finally focused on by light beam focusing unit 34
As surface forms cleaning laser.One-dimensional galvanometer, 2-D vibration mirror, three-dimensional galvanometer or multi-panel can be used to turn for galvanometer unit 32 therein
Mirror etc..Beam shaping, which homogenizes unit 33, can be used microlens array, diffraction optical element etc..Field can be used in light beam focusing unit 34
Mirror, compound lens, non-spherical lens etc..
Wherein, the galvanometer unit 32 is swept including the first scanning galvanometer 321, the second scanning galvanometer 322, for adjusting first
Retouch the first scanning galvanometer motor 323 of 321 position of galvanometer and posture and for adjusting 322 position of the second scanning galvanometer and posture
The second scanning galvanometer motor 324.The directional light collimated through overcoupling collimating mirror unit 31 is successively through 321 He of the first scanning galvanometer
Directive shaping homogenizes unit 33 after the reflection of second scanning galvanometer 322.
- Fig. 3 referring to Figure 1 is provided with auxiliary unit 6 in the laser export head 3, which includes being used for
Collect laser the export head 3 nearby dust collect plant of fugitive dust and the blowning installation for blowing to 3 window glass of laser export head.Institute
The pollution generated in processing cleaning process can effectively can be collected using HEPA negative pressure dust collect plant by stating dust collect plant.Institute
Compressed air can be generated using air compressor machine, air compressor machine by stating blowning installation, and the window glass of Xiang Jiguang export head 3 is blown, in window
Discharge surface forms positive pressure, keeps the cleaning of window glass.
- Fig. 3 referring to Figure 1, the high power laser light cleaning system based on laser array and bundling optical fiber further include control
Unit 5 processed can control the starting, operation and closing of whole system by the setting of control unit 5.Also by control unit 5
The way of output and output power of bundling optical fiber 2 can be adjusted, and passes through each laser of display panel real-time display of control unit 5
The watt level of device unit 11, to realize controllable laser output and the matching of different breadths workpiece 8 to be cleaned.
- Fig. 3 referring to Figure 1, the high power laser light cleaning system based on laser array and bundling optical fiber further includes water
The circulation waterway of cold unit 4, the water cooling unit 4 can provide circulation to laser array 1, bundling optical fiber 2 and laser export head 3
Cooling water.
Further, it is also integrated with power supply on the water cooling unit 4, the power supply is to laser array 1, laser export head
3 and control unit Unit 5 power supply.
It is one embodiment of the present of invention below:
Workpiece 8 to be cleaned is reasonably placed on rinsing table in a manner of safety and firmness first, and by region tune to be cleaned
It is whole to arrive suitable position.Cabinet powers on, and opens system power supply, checks the work shape of the modules such as water cooling unit 4, auxiliary unit 6
State sets each sections parameters such as laser array 1, bundling optical fiber 2, respectively by laser export head 3 with suitable distance
It is directed at region to be cleaned, opens the photoswitch that goes out of laser export head 3, the laser array 1 that multiple laser elements 11 form produces
Raw laser, makes laser coupled enter bundling optical fiber 2 by optical-fiber laser coupling unit 7, transmits laser, collection by bundling optical fiber 2
2 other end of beam optical fiber is connected to laser export head 3.The multi-path laser beam that multiple laser elements 11 issue is via bundling optical fiber 2
Become the laser beam that single channel has the larger angle of divergence, becomes directional light through overcoupling collimating mirror unit 31, the shape of hot spot is by collecting
21 spread geometry of transmission fiber of 2 cross section of beam optical fiber determines.Homogenizing unit 33 by the beam shaping in laser export head 3 will
Laser shaping forms the hot spot of uniform energy-flux density using light beam focusing unit 34 at cleaning thick line shaped laser spot.Clean light from
Laser export head 3 exports, and reaches rinsing table and completes laser cleaning work.That output is closed after cleaning goes out photoswitch, checks
Each module working condition closes system power supply, cabinet power-off.
In the present embodiment, uses 5 pulse optical fibers and form laser array 1, wherein the ginseng of every laser
Number are as follows: central wavelength: 1064 ± 1nm；The way of output: pulse output；Highest average power 500W；Pulsewidth: 40-250ns；It repeats
Frequency: 20kHZ-230kHz；Maximum single pulse energy 20mJ.The structure that bundling optical fiber 2 is exported using the input of 5 tunnels and 1 tunnel, wherein
The core diameter of 5 groups of transmission fibers 5 is 200 μm.The input terminal and 5 pulsed optical fibre lasers of 5 tunnel transmission fibers 5 of bundling optical fiber
Device is of coupled connections by output optical fibre 12, and the optical fiber arrangement form of the output port of bundling optical fiber 2 is linear type the linear alignment,
Form the laser cleaning light source that maximum power output is 2500W；The scanning means parameter of the laser cleaning system is as follows: two dimension vibration
Scarnning mirror unit, operation wavelength 1064nm, maximum input spot diameter 20mm；F-Theta f-theta lens, the focal length of lens are
420mm scans breadth 290*290mm.The line width of scanning light spot is real to the painting layer on aluminum alloy base material surface up to 290mm
Laser cleaning is applied, cleaning speed realizes high efficiency laser cleaning up to 60 ㎡/h.
Finally, it should be noted that foregoing description is only the preferred embodiment of the present invention, the ordinary skill people of this field
Member under the inspiration of the present invention, without prejudice to the purpose of the present invention and the claims, can make multiple similar tables
Show, such transformation is fallen within the scope of protection of the present invention.
Claims (9)
1. a kind of high power laser light cleaning system based on laser array and bundling optical fiber, it is characterised in that: including laser
Array (1), bundling optical fiber (2) and the laser export head (3) being connect with bundling optical fiber (2) output end, the laser array
(1) include several array distributions laser element (11), the bundling optical fiber (2) includes by several with each laser element
(11) one-to-one transmission fiber (21) boundling forms, and the laser that each laser element (11) generates is respectively through corresponding biography
It loses fine (21) to be transferred to laser export head (3), and by exporting outward after laser export head (3) collimation, shaping and focusing.
2. the high power laser light cleaning system according to claim 1 based on laser array and bundling optical fiber, feature
Be: laser is introduced the defeated of corresponding transmission fiber (21) each by an output optical fibre (12) by the laser element (11)
Enter in end.
3. the high power laser light cleaning system according to claim 2 based on laser array and bundling optical fiber, feature
It is: by optical-fiber laser coupling part between the input terminal of the bundling optical fiber (2) and the output end of each output optical fibre (12)
Part (7) connection, the laser coupled that each output optical fibre (12) is exported is into corresponding transmission fiber (21).
4. the high power laser light cleaning system according to claim 2 based on laser array and bundling optical fiber, feature
Be: the output end of each output optical fibre (12) respectively corresponds the input terminal welding of transmission fiber (21).
5. the high power laser light cleaning system according to claim 1 based on laser array and bundling optical fiber, feature
It is: the input terminal of the bundling optical fiber (2) is provided with space laser optical coupling part (6 '), each laser element (11)
The laser of the sending equal directive space laser optical coupling part (6 '), and introduced and corresponded to by space laser optical coupling part (7 ')
In the input terminal of transmission fiber (21).
6. the high power laser light cleaning system according to claim 1 based on laser array and bundling optical fiber, feature
Be: the output end of each transmission fiber (21) is distributed for linear array, or is distributed for rectangular array, or is circle
Column distribution.
7. the high power laser light cleaning system according to claim 1 based on laser array and bundling optical fiber, feature
Be: the laser export head (3) includes coupling collimation mirror unit (31), galvanometer unit (32), beam shaping being sequentially arranged
Homogenize unit (33) and light beam focusing unit (34), the output end of each transmission fiber (21) with couple collimation mirror unit (31)
Input terminal connection.
8. the high power laser light cleaning system according to claim 1 or claim 7 based on laser array and bundling optical fiber, special
Sign is: being provided with auxiliary unit (6) on the laser export head (3), which includes defeated for collecting laser
Lift one's head (3) dust collect plant of fugitive dust and for blowning installation for blowing to laser export head (3) window glass nearby.
9. the high power laser light cleaning system according to claim 1 based on laser array and bundling optical fiber, feature
Be: further including water cooling unit (4), the circulation waterway flowing through laser array (1) of the water cooling unit (4), bundling optical fiber (2) and
Laser export head (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910680045.0A CN110385313A (en) | 2019-07-26 | 2019-07-26 | High power laser light cleaning system based on laser array and bundling optical fiber |
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| CN201910680045.0A CN110385313A (en) | 2019-07-26 | 2019-07-26 | High power laser light cleaning system based on laser array and bundling optical fiber |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111871967A (en) * | 2020-06-30 | 2020-11-03 | 中国科学院理化技术研究所 | Laser cleaning equipment |
| CN111940422A (en) * | 2020-07-27 | 2020-11-17 | 江苏大学 | Handheld laser cleaning device and method |
| CN111940421A (en) * | 2020-07-27 | 2020-11-17 | 江苏大学 | Efficient laser cleaning device and method |
| CN113242393A (en) * | 2021-05-27 | 2021-08-10 | 哈尔滨工程大学 | Two-dimensional micro light spot array generating device |
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