CN208976417U - A kind of device for realizing laser cleaning based on light beam circular scanning - Google Patents
A kind of device for realizing laser cleaning based on light beam circular scanning Download PDFInfo
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- CN208976417U CN208976417U CN201820972120.1U CN201820972120U CN208976417U CN 208976417 U CN208976417 U CN 208976417U CN 201820972120 U CN201820972120 U CN 201820972120U CN 208976417 U CN208976417 U CN 208976417U
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- eyeglass
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- scanning
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Abstract
The utility model discloses the invention also discloses a kind of devices that laser cleaning is realized based on light beam circular scanning, including motor, rotary reflection eyeglass, the lower end of the motor is connected with rotatable rotary reflection eyeglass, the less parallel light beam can be radiated at rotating mirror on piece, the rotary reflection eyeglass reflects the light beam reflected back, when motor rotation, the light beam of rotary reflection eyeglass reflection forms scanning track, realizes circular scanning.Uniformly, cleaning efficiency is high for the utility model scanning, at low cost, the service life is long, light weight, is conducive to portable, and overall structure simple and stable is easily achieved.
Description
Technical field
The utility model relates to a kind of beam scanning apparatus, specifically, are related to a kind of based on light beam circular scanning realization
The device of laser cleaning belongs to the technical fields such as laser cleaning.
Background technique
Laser cleaning as a kind of novel surface cleaning technique, with no Mechanical Contact, without substrate damage, it is environmentally protective,
The advantages such as operating cost is low are applied in the fields such as mold clean, electronic component preparation, historical relic's protection and reparation, paint removal derusting
Prospect is very wide.Therefore, the research and development of laser cleaning technique and equipment have caused the height of researchers at home and abroad
Concern.
Mainly the high characteristic of laser energy density is utilized in laser cleaning, i.e., a focused laser beams is directly irradiated dirt
Contaminate object (or paint, rust etc.), so that pollutant is generated fusing, gasification or vibration etc. and physically or chemically change, thus make pollutant with
Contaminated object is detached from.When being cleaned (or removing) to pollution in wide area object (or paint, rust etc.), set to reduce laser cleaning
Standby cost reduces equipment volume, be usually make single light beam in a certain direction on quickly move back and forth, so that exposure beam is existed
Object surface to be cleaned forms linear hot spot, then make linear spot motion again, is cleaned to reach to entire pollution face
Purpose.Therefore, how to design that a kind of speed is fast, high-efficient, the service life is long, structure is simple and one-dimensional scanning at low cost to laser beam
Device is to push one of laser cleaning technique fast development and the critical issue of application.
Currently, the device and its implementation that scan laser beam quickly mainly have platform scanner, vibration mirror scanning and tilting mirror
Three kinds of scanning, working principle and advantage and disadvantage are specific as follows:
Platform scanner.Drive laser beam or object to be cleaned that plane motion occurs by mobile platform, make laser beam with to
Relative motion occurs for cleaning of objects, to reach cleaning purpose.Which principle is simple, but equipment occupation space is big, is unfavorable for
Realize portable operation.
Vibration mirror scanning.Which is usually used in laser processing and index carving system, specific method are that beam of laser is got to galvanometer
On, so that flare is become linear hot spot by quickly swinging back and forth for galvanometer.Which occupies volume than platform scanner mode
Small, scanning speed is fast.But the swing speed that the motion mode quickly swung back and forth not only will limit galvanometer also will affect galvanometer
The service life of motor.
Multiple surface rotating mirror scanning.To overcome defect existing for vibration mirror scanning, multiple surface rotating mirror device and technology to obtain in certain fields
To development and application.Since tilting mirror is one direction rotation, so motor long service life is easily achieved.But multiple surface rotating mirror
There are certain defects: first, manufacture craft requires height, cost is high；Second, light beam incidence point (or reflection point) is with reflecting surface
It rotates and changes, be unfavorable for the Uniform Irradiation of light beam；Third, scanning range (or angle) not malleable, because of the surface sweeping of tilting mirror
Range (or angle) is determined by the number of reflecting surface.Need tilting mirror face number relatively more.Fourth, when beam size is bigger, it is more
Face tilting mirror volume can be very big.
Utility model content
The technical problems to be solved in the utility model is against the above deficiency, to provide a kind of based on light beam circular scanning realization
The device of laser cleaning, including motor, rotary reflection eyeglass, the lower end of the motor are connected with rotatable rotating mirror
Piece, the less parallel light beam can be radiated at rotating mirror on piece, the light beam that the rotary reflection eyeglass will reflect back
It is reflected, when motor rotation, the light beam of rotary reflection eyeglass reflection forms scanning track, realizes circular scanning.
A kind of prioritization scheme, the rotary reflection eyeglass are concave mirror.
Further, field lens is provided with below the rotary reflection eyeglass, the rotary reflection eyeglass reflects light beam
It being radiated on field lens, the light beam that rotary reflection eyeglass reflects back is focused by the field lens, when motor rotation, focal spot shape
At scanning track, circular scanning is realized.
Further, fixation reflex eyeglass, the reflecting surface of fixation reflex eyeglass and field lens institute are provided with above the field lens
Angle is provided between plane, the fixation reflex eyeglass is located at the underface of rotary reflection eyeglass；The less parallel light
Beam is radiated at stationary mirror on piece, and the reflected beams of fixation reflex eyeglass are radiated at rotating mirror on piece, and the fixation is anti-
The reflected beams for penetrating eyeglass are vertical with incident beam；The rotary reflection eyeglass by light beam reflected illumination on field lens, the field
The light beam that rotary reflection eyeglass reflects back is focused by mirror, and when motor rotation, focal spot forms scanning track, realizes circumference
Scanning.
Further, the incidence point of the rotating mirror on piece is overlapped with the rotating shaft center of motor；Described device is also
Including beam shaping system, the laser shaping that optical fiber projects is become less parallel light beam and is irradiated by the beam shaping system
The utility model after the above technical solution is adopted, compared with prior art, has the advantage that
(1) uniformly, cleaning efficiency is high for scanning.In traditional scanning mode, the scanning track of laser focal spot is often one
Straight line, when movement (especially artificial mobile) scanning system carries out face cleaning, if movement speed is slightly readily formed " spot fastly
Horse line " or " z " shape scan track, and cleaning effect is undesirable.If moved linearly using the utility model light beam scanning mode
Scanning means carries out the process of face cleaning, and pollutant can be cleaned twice, i.e., " under (or right) hemicycle " run-down " upper (or
It is left) hemicycle " it cleans again once, track is cleaned in other words is similar to " spiral ".The uniform of cleaning is substantially increased in this way
Property and cleaning efficiency.
(2) at low cost, the service life is long.
1. requiring motor performance low.Light beam is quickly scanned and is completed mostly by galvanometer system at present, due to scanning in light beam
Need galvanometer motor back and forth movement in the process, this back and forth movement makes beam scanning rate very fast, and it is long when
Between quickly back and forth movement can also reduce the service life of motor, therefore, galvanometer system is relatively high to the performance common demands of motor,
In addition the control system of galvanometer motor is relatively also more complicated.Light beam scanning process motor is completed in the present invention only to need
Single direction rotation, control system generally only need that the revolving speed of motor can be changed.Accordingly, with respect to traditional galvanometer system, this reality
With the novel performance requirement greatly reduced to motor, this service life for not only contributing to improve motor can also significantly reduce electricity
Machine price, while also simplifying control system.
2. requiring scanning reflection mirror low.Under normal conditions, the device of light beam scanning is realized all using motor single direction rotation
Be to be based on polygonal mirror, but there are certain defects for multiple surface rotating mirror: first, manufacture craft requires height, cost is high；Second,
Light beam incidence point (or reflection point) changes with the rotation of reflecting surface, is unfavorable for the Uniform Irradiation of light beam；Third, scanning range
(or angle) not malleable, because the surface sweeping range (or angle) of tilting mirror is determined by the number of reflecting surface.Need tilting mirror face number ratio
It is more.Fourth, multiple surface rotating mirror volume can be very big when beam size is bigger.The scanning reflection mirror of the utility model is one
The common plane mirror of piece, relative to multiple surface rotating mirror, the plane mirror is easy to process, and cost substantially reduces.
3. requiring field lens low.(galvanometer system or multiple surface rotating mirror system are either based in light beam rectilinear scan pattern
System) in order to keep the uniformity among whole scanning track with two sides focal spot, field lens has to special designing, therefore cost is often
It is relatively high.The position of scanning track of the light beam on field lens is into that circle is symmetrical, this is just dropped significantly in the present invention
The low requirement to field lens.
Therefore, utility model device device is few, and structure is simple, this helps to reduce the long-term steady of system cost and system
It is fixed.
(3) light weight is conducive to portable.Utility model device device is few, so total quality is light, and according to this reality
It is advantageous to be made into Handheld laser cleaning equipment with Novel light path design.
Change the half of hot spot circular scan track in addition, can be realized by the spacing for adjusting rotary reflection eyeglass and field lens
Diameter (or width).
Therefore the method and apparatus entirety provided by the utility model that laser cleaning is realized based on light beam circular scanning
Simple and stable structure, be easily achieved, manufacturing cost it is low.
The utility model is described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 4 cleaning device of the utility model embodiment；
Fig. 2 is the structural schematic diagram of 2 cleaning device of the utility model embodiment；
In figure,
1- shell and bracket, 2- rotary reflection eyeglass, 3- fixation reflex eyeglass, 4- field lens, 5- beam spot scans track, 6- light
Beam orthopedic systems, 7- motor.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model.
A kind of method that laser cleaning is realized based on light beam circular scanning of embodiment 1
The utility model provides a kind of method for realizing laser cleaning based on light beam circular scanning, comprising the following steps:
Step 1: beam shaping becomes less parallel light beam from the laser of fiber exit after beam shaping system；
Step 2: approximate collimated light beam is radiated at rotary reflection eyeglass 2, rotary reflection eyeglass 2 is protected in rotary course
Card less parallel light beam can be radiated on mirror surface；Or less parallel light beam can be radiated on fixation reflex eyeglass 3, it is fixed
The reflected beams are radiated on rotary reflection eyeglass 2 by reflecting optics 3；
Reflected light is radiated on field lens 4 by step 3, rotary reflection eyeglass 2, and field lens 4 reflects rotary reflection eyeglass 2 to come
Light beam be focused, when motor rotation when, focal spot formed scanning track 5, realize circular scanning.
Specifically become class less parallel light beam after beam shaping system from the laser of fiber exit, the light beam is through rotating
Reflecting optics reflection, is finally focused by field lens and forms high-intensitive hot spot, dirty when the high intensity hot spot is got on object to be cleaned
Dye object can be cleaned out.If motor drives rotary reflection eyeglass high speed rotation, high-strength focused hot spot will form one
A circular scan track.Drive scanning system overall movement that can realize that large area is cleaned through manually or mechanically device.Light beam
Incidence point on rotating mirror is overlapped with the rotating shaft center of motor.
A kind of device that laser cleaning is realized based on light beam circular scanning of embodiment 2
As shown in Fig. 2, the utility model provides a kind of device for realizing laser cleaning based on light beam circular scanning, including outer
Shell 1, bracket, beam shaping system 6, motor 7, rotary reflection eyeglass 2, field lens 4.
The top of the shell 1 is fixedly installed motor 7, the 7 electric connection of power supply line of motor and control line.
The motor 7 is fixed by the bracket on the top of shell 1 or side wall, and the lower end of the motor 7 is connected with and can revolve
The rotary reflection eyeglass 2 turned, the rotary reflection eyeglass 2 is clockwise or counterclockwise.The rotary reflection eyeglass 2 has
Standby to adjust rotating speed functions, revolving speed is adjustable, because the laser irradiation time that different cleaning materials need can have any different.
Rotary reflection eyeglass 2 is plane mirror.
The bottom of the shell 1 is provided with field lens 4, and field lens 4 is condenser lens or lens group, has focusing capability.
Described device further includes beam shaping system 6, and the beam shaping system 6 is located at 1 interior side of shell.
The laser shaping that optical fiber projects is become less parallel light beam by the beam shaping system 6, and by approximate directional light
Beam can be radiated on rotary reflection eyeglass 2, it is preferred that the incidence point of rotary reflection eyeglass 2 and rotating shaft center's weight of motor
It closes.For the rotary reflection eyeglass 2 by light beam reflected illumination on field lens 4, the field lens 4 reflects back rotary reflection eyeglass 2
Light beam be focused, when motor rotation when, focal spot formed scanning track 5, realize circular scanning.
Spacing by adjusting rotary reflection eyeglass 2 and field lens 4 can be realized the radius for changing hot spot circular scan track
(or width).
A kind of method that laser cleaning is realized based on light beam circular scanning of embodiment 3
The utility model also provides a kind of method for realizing laser cleaning based on light beam circular scanning, comprising the following steps:
Step 1: beam shaping becomes less parallel light beam from the laser of fiber exit after beam shaping system；
Step 2: approximate collimated light beam is radiated on fixation reflex eyeglass 3, and fixation reflex eyeglass 3 irradiates reflected light
On rotary reflection eyeglass 2；Rotary reflection eyeglass 2 guarantees that less parallel light beam can be radiated on mirror surface in rotary course；
Reflected light is radiated on field lens 4 by step 3, rotary reflection eyeglass 2, and field lens 4 is by the reflection of rotary reflection eyeglass 2
Light beam is focused, and when motor rotation, focal spot forms scanning track 5, realizes circular scanning.
Specifically become class less parallel light beam after beam shaping system from the laser of fiber exit, the light beam is through fixation
Reflecting optics and rotary reflection eyeglass reflection, finally focused by field lens and form high-intensitive hot spot, when the high intensity hot spot get to
When on cleaning of objects, pollutant can be cleaned out.If motor drives rotary reflection eyeglass high speed rotation, high-strength focused
Hot spot will form a circular scan track.Drive scanning system overall movement that can realize through manually or mechanically device big
Area cleaning.Incidence point of the light beam on rotating mirror is overlapped with the rotating shaft center of motor.
A kind of device that laser cleaning is realized based on light beam circular scanning of embodiment 4
As shown in Figure 1, the utility model also provides a kind of device that laser cleaning is realized based on light beam circular scanning, including
Shell 1, bracket, beam shaping system 6, motor 7, rotary reflection eyeglass 2,3 field lens 4 of fixation reflex eyeglass.
The top of the shell 1 is fixedly installed motor 7, the 7 electric connection of power supply line of motor and control line.
The motor 7 is fixed by the bracket on the top of shell 1 or side wall, and the lower end of the motor 7 is connected with and can revolve
The rotary reflection eyeglass 2 turned, the rotary reflection eyeglass 2 is clockwise or counterclockwise.The rotary reflection eyeglass 2 has
Standby to adjust rotating speed functions, revolving speed is adjustable, because the laser irradiation time that different cleaning materials need can have any different.
Rotary reflection eyeglass 2 is plane mirror.
The bottom of the shell 1 is provided with field lens 4, and field lens 4 is condenser lens or lens group, has focusing capability.
Fixation reflex eyeglass 3, the reflecting surface and 4 place plane of field lens of fixation reflex eyeglass 3 are provided with above the field lens 4
At 45 degree of angles, the fixation reflex eyeglass 3 is located at the underface of rotary reflection eyeglass 2.
Described device further includes beam shaping system 6, and the beam shaping system 6 is located at 1 interior side of shell.
The laser shaping that optical fiber projects is become less parallel light beam by the beam shaping system 6, and by approximate directional light
Beam is radiated at the center of fixation reflex eyeglass 3, and incidence angle is 45 degree, and the reflected beams are vertical with incident beam, fixation reflex
Incidence point of the reflected beams of eyeglass 3 on rotary reflection eyeglass 2 is overlapped with the rotating shaft center of motor.
Approximate collimated light beam is reflected as normal beam and is radiated on rotary reflection eyeglass 2 by the fixation reflex eyeglass 3,
Normal beam is reflected as diagonal beam and is radiated on field lens 4 by the rotary reflection eyeglass 2.
Diagonal beam is focused by the field lens 4, and when motor rotation, focal spot forms scanning track 5, realizes that circumference is swept
It retouches.
Spacing by adjusting rotary reflection eyeglass 2 and field lens 4 can be realized the radius for changing hot spot circular scan track
(or width).
A kind of method that laser cleaning is realized based on light beam circular scanning of embodiment 5
The utility model also provides a kind of method for realizing laser cleaning based on light beam circular scanning, comprising the following steps:
Step 1: beam shaping becomes less parallel light beam from the laser of fiber exit after beam shaping system；
Step 2: approximate collimated light beam is radiated on rotary reflection eyeglass 2, and the rotary reflection eyeglass 2 is concave mirror,
Rotary reflection eyeglass 2 guarantees that less parallel light beam can be radiated on mirror surface in rotary course；
Reflected light is focused by step 3, rotary reflection eyeglass 2, and when motor rotation, focal spot forms scanning track 5,
Realize circular scanning.
A kind of device that laser cleaning is realized based on light beam circular scanning of embodiment 6
The utility model provide it is a kind of based on light beam circular scanning realize laser cleaning device, including shell 1, bracket,
Beam shaping system 6, motor 7, rotary reflection eyeglass 2.
The top of the shell 1 is fixedly installed motor 7, the 7 electric connection of power supply line of motor and control line.
The motor 7 is fixed by the bracket on the top of shell 1 or side wall, and the lower end of the motor 7 is connected with and can revolve
The rotary reflection eyeglass 2 turned, rotary reflection eyeglass 2 are concave mirror, and the rotary reflection eyeglass 2 is equal clockwise or counterclockwise
It can.The rotary reflection eyeglass 2 has adjusting rotating speed functions, and revolving speed is adjustable, because when the laser irradiation of different cleaning materials needs
Between can have any different.
Described device further includes beam shaping system 6, and the beam shaping system 6 is located at 1 interior side of shell.
The laser shaping that optical fiber projects is become less parallel light beam by the beam shaping system 6, and by approximate directional light
Beam can be radiated on rotary reflection eyeglass 2, it is preferred that the incidence point of rotary reflection eyeglass 2 and rotating shaft center's weight of motor
It closes.The light beam reflected back is focused by the rotary reflection eyeglass 2, and when motor rotation, focal spot forms scanning track 5,
Realize circular scanning.
Uniformly, cleaning efficiency is high for the utility model scanning.In traditional scanning mode, the scanning track of laser focal spot is often
It is straight line, when movement (especially artificial mobile) scanning system carries out face cleaning, if speed is slightly readily formed fastly
" zebra stripes " or " z " shape scan track, and cleaning effect is undesirable.If using the utility model light beam scanning mode, in straight line
Motion scan device carries out the process of face cleaning, and pollutant can be cleaned twice, i.e., " under (or right) hemicycle " run-down " on
(or left) hemicycle " cleans once again, cleans track in other words and is similar to " spiral ".The equal of cleaning is substantially increased in this way
Even property and cleaning efficiency.
It is at low cost, the service life is long；The utility model rotating mirror is a piece of common plane of reflection mirror, usual situation
Under, the device of light beam scanning is realized using motor single direction rotation, reflecting mirror is all multi-panel, relative in the utility model
Plane reflection eyeglass, no matter which kind of polygonal mirror its processing technology can all seem complicated and cost also increases therewith.Relative to biography
System galvanometer system, greatly reduces the performance requirement to motor, this service life for not only contributing to improve motor can also be significant
Reduce motor price.And the control system of galvanometer system is more complicated, and the speed that not only control galvanometer will also control galvanometer
Back and forth movement and swing angle, and the control system of the utility model generally only needs that the revolving speed of motor can be changed, significantly
Simplify control system.Therefore, utility model device device is few, and structure is simple, this helps to reduce system cost and system
It is steady in a long-term.
Light weight is conducive to portable；Utility model device device is few, so total quality is light, and practical according to this
Novel light path design is advantageous to be made into Handheld laser cleaning equipment.
Change the half of hot spot circular scan track in addition, can be realized by the spacing for adjusting rotary reflection eyeglass and field lens
Diameter (or width).
The above is the citing of the utility model preferred forms, wherein the part that do not address in detail is this field
The common knowledge of those of ordinary skill.The protection scope of the utility model is based on the contents of the claims, any to be based on this reality
The equivalent transformation carried out with novel technical inspiration, is also within the protection scope of the utility model.
Claims (5)
1. a kind of device for realizing laser cleaning based on light beam circular scanning, it is characterised in that: including motor (7), rotary reflection
Eyeglass (2), the lower end of the motor (7) are connected with rotatable rotary reflection eyeglass (2), and less parallel light beam can be radiated at
On rotary reflection eyeglass (2), the rotary reflection eyeglass (2) reflects the light beam reflected back, when motor rotation, rotation
The light beam for turning reflecting optics (2) reflection forms scanning track (5), realizes circular scanning.
2. a kind of device for realizing laser cleaning based on light beam circular scanning as described in claim 1, it is characterised in that: described
Rotary reflection eyeglass (2) is concave mirror.
3. a kind of device for realizing laser cleaning based on light beam circular scanning as described in claim 1, it is characterised in that: described
It is provided with below rotary reflection eyeglass (2) field lens (4), the rotary reflection eyeglass (2) is by light beam reflected illumination in field lens (4)
On, the light beam that rotary reflection eyeglass (2) reflects back is focused by the field lens (4), and when motor rotation, focal spot formation is swept
It retouches track (5), realizes circular scanning.
4. a kind of device for realizing laser cleaning based on light beam circular scanning as described in claim 1, it is characterised in that: described
It is provided with below rotary reflection eyeglass (2) field lens (4), is provided with fixation reflex eyeglass (3) above the field lens (4), it is fixed
Angle is provided with where the reflecting surface and field lens (4) of reflecting optics (3) between plane, the fixation reflex eyeglass (3) is located at rotation
Turn the underface of reflecting optics (2)；The less parallel light beam is radiated on fixation reflex eyeglass (3), fixation reflex eyeglass (3)
The reflected beams be radiated on rotary reflection eyeglass (2), the reflected beams of the fixation reflex eyeglass (3) and incident beam hang down
Directly；The rotary reflection eyeglass (2) is by light beam reflected illumination on field lens (4), and the field lens (4) is by rotary reflection eyeglass (2)
The light beam reflected back is focused, and when motor rotation, focal spot forms scanning track (5), realizes circular scanning.
5. a kind of device for realizing laser cleaning based on light beam circular scanning as described in claim 1-4 any one, special
Sign is: the incidence point on the rotary reflection eyeglass (2) is overlapped with the rotating shaft center of motor；Described device further includes light beam
The laser shaping that optical fiber projects is become less parallel light beam and is irradiated by orthopedic systems (6), the beam shaping system (6).
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| CN201820972120.1U CN208976417U (en) | 2018-06-23 | 2018-06-23 | A kind of device for realizing laser cleaning based on light beam circular scanning |
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| CN201820972120.1U CN208976417U (en) | 2018-06-23 | 2018-06-23 | A kind of device for realizing laser cleaning based on light beam circular scanning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798275A (en) * | 2021-09-17 | 2021-12-17 | 深圳技术大学 | Pipeline inner wall laser cleaning device based on side wall projection |
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2018
- 2018-06-23 CN CN201820972120.1U patent/CN208976417U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798275A (en) * | 2021-09-17 | 2021-12-17 | 深圳技术大学 | Pipeline inner wall laser cleaning device based on side wall projection |
| CN113798275B (en) * | 2021-09-17 | 2022-06-17 | 深圳技术大学 | Pipeline inner wall laser cleaning device based on side wall projection |
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