CN104626782B - Laser processing method - Google Patents
Laser processing method Download PDFInfo
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- CN104626782B CN104626782B CN201510007884.8A CN201510007884A CN104626782B CN 104626782 B CN104626782 B CN 104626782B CN 201510007884 A CN201510007884 A CN 201510007884A CN 104626782 B CN104626782 B CN 104626782B
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- Laser Beam Processing (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
The present invention relates to a kind of laser processing method, it is comprised the following steps：Some pawpaws are positioned over working area；Some pawpaws are positioned over accommodating area from working area；Each pawpaw is moved to the top of some drive areas from accommodating area, each drive area is driven a row pawpaw；When sensing a certain pawpaw by mark area, output laser is marked on the pawpaw；Pawpaw after mark is collected in the end of each drive area.Above-mentioned technical proposal, is driven and marks by by pawpaw in drive area, realizes automation mark, significant notation can be carried out to pawpaw using laser technology, without using paper or glue, not damage pawpaw, preservation or transport are not influenceed, and convenient and swift, mark effect is good.
Description
Technical field
The present invention relates to laser technology, more particularly to laser processing method.
Background technology
Laser marking technology is one of maximum application field of Laser Processing.Laser marking is swashing using high-energy-density
Light carries out local irradiation to workpiece, skin-material is vaporized or occur the chemical reaction of color change, so as to leave permanent mark
A kind of marking method of note.Laser marking can get various words, symbol and pattern etc., and character boundary can be from millimeter to micro-
Rice magnitude, this has special meaning to the false proof of product.
Existing fruit Market competition, but good mark mode is a lack of, the brand of oneself is often adopted by businessman
With pressure sensitive adhesive outside fruit, do so wastes paper and glue, also there is certain pollution to fruit surface.
But, prior art does not carry out significant notation using laser technology to fruit.
The content of the invention
Based on this, it is necessary to provide a kind of new laser processing method, without glue, rower easily can be entered to pawpaw
Note.
A kind of laser processing method, it is comprised the following steps：Some pawpaws are positioned over working area；By some pawpaws from temporary
Deposit area and be positioned over accommodating area；Each pawpaw is moved to the top of some drive areas, the row wood of each drive area transmission one from accommodating area
Melon；When sensing a certain pawpaw by mark area, output laser is marked on the pawpaw；Mark is collected in the end of each drive area
Pawpaw after note.
Wherein in one embodiment, some pawpaw test surfaces finish are taken.
Wherein in one embodiment, according to surface smoothness, the surface of pawpaw is cleared up in working area.
Wherein in one embodiment, clear up after the surface of pawpaw, also take some pawpaw repetition measurement surface smoothnesses.
Wherein in one embodiment, after repetition measurement surface smoothness, judge whether surface smoothness meets the requirements, otherwise send out
Put up a notice.
Wherein in one embodiment, given notice using wireless communication mode.
Wherein in one embodiment, give notice to mobile terminal.
Wherein in one embodiment, short message to mobile phone is sent.
Wherein in one embodiment, the power of output laser is set according to surface smoothness.
Wherein in one embodiment, the mark time of output laser is set according to surface smoothness.
Above-mentioned technical proposal, is driven and marks by by pawpaw in drive area, realizes automation mark, can be using sharp
Light technology carries out significant notation to pawpaw, without using paper or glue, does not damage pawpaw, and preservation or transport are not influenceed, convenient
Fast, mark effect is good.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the inventive method one embodiment.
Specific embodiment
To enable the above objects, features and advantages of the present invention more obvious understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.Elaborate many details in order to fully understand this hair in the following description
It is bright.But the present invention can be implemented with being much different from other manner described here, and those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level
", "left", "right" and similar statement for illustrative purposes only, it is unique implementation method to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the implementation method of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
The arbitrary and all of combination of related Listed Items.
As shown in figure 1, a kind of laser processing method, it is comprised the following steps：Some pawpaws are positioned over working area；If will
Dry pawpaw is positioned over accommodating area from working area；Each pawpaw is moved to the top of some drive areas, each drive area from accommodating area
It is driven a row pawpaw；When sensing a certain pawpaw by mark area, output laser is marked on the pawpaw；In each drive area
Collect the pawpaw after mark in end.For example, being respectively provided with multiple mark areas in drive area both sides, packet carries out mark behaviour simultaneously
Make, for example, in a drive area, a certain group of pawpaw is transferred to mark location, and each one mark area of pawpaw correspondence senses certain simultaneously
At mark area, output laser is marked one pawpaw on the pawpaw.When sensing a certain pawpaw by mark area, including sensing
The pawpaw stops at mark area, carries out static mark, also including sensing the pawpaw in the mark range of motion in mark area, enters
Mobile state mark.
For example, a kind of laser processing method, it is comprised the following steps：Some pawpaws are positioned over accommodating area one by one；Will be each
Pawpaw is moved to the top of some drive areas from accommodating area, and each drive area is driven a row pawpaw；A certain pawpaw is sensed by beating
During mark area, output laser is marked on the pawpaw；Pawpaw after mark is collected in the end of each drive area.And for example, it is a kind of
Laser processing method, it is comprised the following steps：Some pawpaws are positioned over working area；Some pawpaws are positioned over appearance from working area
Put area；Each pawpaw is moved to the top of some drive areas from accommodating area, each drive area is driven a row pawpaw；Sense a certain wood
When melon is by mark area, output laser is marked on the pawpaw；Pawpaw after mark is collected in the end of each drive area.
And for example, a kind of laser processing method, it is comprised the following steps：Accommodating area is positioned over after some pawpaws are cleared up；Will
Each pawpaw is moved to the top of some drive areas from accommodating area, and each drive area is driven a row pawpaw；Sense a certain pawpaw to pass through
During mark area, output laser is marked on the pawpaw；Pawpaw after mark is collected in the end of each drive area.
Preferably, multiple mark areas are set, and each mark area sets inductor and laser, the sensing in a certain mark area
When device senses a certain pawpaw by the mark area, the laser output laser in the mark area is marked on the pawpaw.For example,
Using gravity sensor, whether sensing has pawpaw by mark area.
Preferably, according to the base of fruit of pawpaw, the position of pawpaw is adjusted, when sensing a certain pawpaw by mark area, output swashs
Light is marked on the pawpaw；So, each pawpaw can be reached all to be marked at suitable position, such as all in upper half
Realize the mark from top to bottom of pattern in portion.For example, setting some recesses in drive area, each pawpaw is moved to transmission from accommodating area
During the top in area, mechanical arm obtains the image of pawpaw, according to the base of fruit of pawpaw, adjusts the position of pawpaw so that each pawpaw
Bottom enter a recess, and base of fruit is upward.So, can be so that the pattern of each pawpaw be generally protected after being marked
Hold consistent, orderly, overall appearance, mark effect are good.
For example, according to the mean size of pawpaw, pre-seting pattern, including its content and size；Such as pattern is a business
Mark, its size is set according to the mean size of pawpaw；When then sensing a certain pawpaw by mark area, output laser is in the wood
The pattern is marked on melon.For example, the pattern includes the figure and/or word for identifying commodity, for example, the pattern is business
Mark, trading company are referred to as or other are used to identify the figure and/or word of commodity.And for example, according to the average skin depth of pawpaw, pre-set
The thickness being marked, for example, power and mark time by adjusting output laser, enterprising in pawpaw during controlled output laser
The thickness of line flag；For example, when output laser is marked on the pawpaw, the thickness being marked is the average skin depth
1%-10%；And for example, when output laser is marked on the pawpaw, the thickness being marked is the average skin depth
1.2%-3%；Preferably, when output laser is marked on the pawpaw, the thickness being marked is the average skin depth
1.6%-2.3%；So, significant icon indicia or two-dimentional code labeling can have both been realized, can have avoided influenceing pawpaw again
Storage time.For example, power and mark time by adjusting output laser, are marked during controlled output laser on pawpaw
Effect, for example, dark aufhellung, or light color in-depth etc., and for example, the position coating wax layer after mark can so be protected
Pawpaw, and the position after mark can be protected.During indicia patterns, comprise the following steps：For each lines, the mark of its outline position
Between clocking more than its center the mark time, for example, centered on the mark time of outline position position mark the time 2
Times.Preferably, during indicia patterns, between outline position and center, according to the thickness of lines, the time of mark is adjusted,
So that from outline position to center, the time of mark is gradually short, such as the mark of position centered on the mark time of outline position
2 times between clocking, the mark time therebetween presses linear decrease, by that analogy.Wherein, the power of output laser and mark time,
Those skilled in the art are specifically set using prior art according to the parameter of laser, are adjusted flexibly according to factors such as peel thicknesses
.
Preferably, before pawpaw being positioned over into accommodating area, also including step：Preset recording information, the record information bag
Include the place of production, production environment and implantation time of pawpaw etc.；Also, after indicia patterns, also perform step：Output laser is in the wood
Curved surface Quick Response Code is marked on melon, wherein comprising the record information or its link.Wherein, the ratio of width to height of curved surface Quick Response Code is 0.6
To 0.7；Preferably, the ratio of width to height of curved surface Quick Response Code is 0.62 to 0.65.When Quick Response Code is printed upon curved surface, Quick Response Code identification is soft
The accuracy rate of part identification is relatively low, but pawpaw is difficult to plane printing Quick Response Code, accordingly, it would be desirable to the width for adjusting Quick Response Code is high
Than when experiment proves the ratio of width to height of Quick Response Code for 0.62 to 0.65 interval, without additional designs Quick Response Code identification software, need to only adopt
With common Quick Response Code identification software, you can with preferable recognition effect.
Preferably, when output laser is marked on the pawpaw, comprise the following steps：Enter rower from middle outwards portion
Note, or, it is marked from a lateral opposite side；Or, figure to be marked is divided into alternate two parts, each section is
Some parallel lines, two parts are spliced into figure to be marked.This way it is possible to avoid hot-spot, is adapted to be marked on pawpaw.
Wherein, figure to be marked pattern or Quick Response Code etc. belonging to.For example, figure to be marked accounts for the 5%- of pawpaw surface area
15%；Preferably, figure to be marked accounts for the 6%-8% of pawpaw surface area, so, both with conspicuousness, it is easy to recognize, again can
Avoid hindering user discrimination pawpaw body or produce psychological resistance.Preferably, when output laser is marked on the pawpaw,
For figure to be marked, realized using double-deck mark mode, first mark the shorter graphical content of output time, then when marking output
Between graphical content more long.
For example, being marked on the pawpaw using semiconductor laser marking output laser.For example, using carbon dioxide
Laser marking machine output laser is marked on the pawpaw.For example, exporting laser in the pawpaw using laser marking machine
On be marked.Semiconductor laser marking, CO 2 laser marking machine, laser marking machine can facilitate on pawpaw
Be marked, without damage pulp, mark depth less than peel thickness 10% when, have no substantial effect on the guarantor of pawpaw
Hide or store, nor affect on sale.So, the effect that mark reaches is exposed by the evaporation of the pericarp entry material of pawpaw
Deep layer material, so as to carve pattern, trade mark, date, LOGO or the word of fineness, without consumptive material, long service life.
For example, whether send and receive device using light senses pawpaw by mark area.For example, light sends and receives device including
Photocell, light send lens, optical receiver lens and light-sensitive element.Photocell sends lens emergent light, light by light
Receiving lens make incident light be collected on light-sensitive element, when light sends to be blocked between lens and optical receiver lens, photosensitive unit
Part is not subject to incident light, so as to send a signal.Wherein in one embodiment, light sends and receives device using infrared
Light.For example, light sends and receives device uses visible ray.For example, light sends and receives device uses ultraviolet light.So, when pawpaw passes through
When crossing mark area, light is separated, and sends induced signal or induction information, notifies that laser proceeds by mark.
Wherein in one embodiment, drive area sets transmission cabin, and each transmission volume of compartment puts a pawpaw.A reality wherein
Apply in example, transmission cabin sets swing-in hatch door, similar to the hinge door of kitchen and bath.For example, swing-in hatch door elasticity is set, in pawpaw
Restored to the original state automatically after entering cabin, so as to reach the effect of automatic pass hatch door；And for example, the split setting of swing-in hatch door.Wherein
In one embodiment, transmission cabin is circle.Wherein in one embodiment, transmission cabin is square.So, a pawpaw one
Cabin, can realize being marked in an orderly manner, without interfering with each other, so as to reach preferably mark effect.Preferably, according to pawpaw
Volume sets the size and location of transmission cabin and its swing-in hatch door, to reach the effect that each transmission volume of compartment puts a pawpaw.It is excellent
Choosing, each transmission cabin also sets up a recess, for example, when each pawpaw is moved to the top of drive area from accommodating area, mechanical arm
The image of pawpaw is obtained in real time, according to the base of fruit of pawpaw, adjusts the position of pawpaw so that the bottom of each pawpaw is recessed into one
Portion, and base of fruit is upward.So, can be so that the pattern of each pawpaw be generally consistent, in order after being marked.
Wherein in one embodiment, under gravity, each pawpaw is moved to some drive areas from accommodating area.At it
In middle one embodiment, under gravity, each pawpaw is pushed into some drive areas from accommodating area.One embodiment wherein
In, wedgy passage is set between accommodating area and drive area.Wherein in one embodiment, square is set between accommodating area and drive area
Shape passage.Preferably, the gradient be less than 20 degree in the environment of, using pusher under gravity, by each pawpaw from house
Area slowly pushes to some drive areas.So, it is advantageously implemented unmanned, automation mechanized operation.
Wherein in one embodiment, before each pawpaw is positioned over into accommodating area, pre-treatment step is also performed.Wherein one
In individual embodiment, pre-treatment step includes beta pruning leaf.For example, removing long base of fruit or unnecessary branch using secateurs automatic shearing
Leaf.Wherein in one embodiment, pre-treatment step is also considered to be worth doing including drifting dust.For example, it is loose to blow away some automatically using blower fan
Dust.Wherein in one embodiment, pre-treatment step also includes wiping.For example, by a soft cloth layer automatic erasing pawpaw
Appearance, without wiping very clean, it is only necessary to simply pass through soft cloth layer.So, after by pretreatment, Ke Yi great
The big rate of breakdown for mitigating subsequent step, lifts the definition and accuracy rate of mark.Preferably, soft cloth layer is obliquely installed, from
And by means of Action of Gravity Field so that pawpaw is slowly rolled to accommodating area；Preferably, accommodating area set flexible part, for receive from
Soft cloth layer slowly rolls across the pawpaw for coming.For example, the gradient of soft cloth layer is 10 to 30 degree, length is 1 to 5 meter, so, can be true
The rolling speed for protecting pawpaw is unhappy, it is to avoid damage.
Wherein in one embodiment, each pawpaw is moved to some drive areas from accommodating area by row.A reality wherein
Apply in example, each pawpaw is moved into some drive areas from accommodating area by row push.Wherein in one embodiment, accommodating area with pass
Passage is set between dynamic area.Wherein in one embodiment, the bottom of passage and both sides set groove, and are blown from a sidepiece
Wind.Wherein in one embodiment, oliquely downward dried from a sidepiece.Wherein in one embodiment, according to the weight of pawpaw
The wind speed of blowing is set, for avoiding blowing pawpaw.Blowing helps to remove dust and scattered leaf, it is to avoid influence laser labelling effect
Really.Preferably, if each pawpaw is moved into dry passage by row push from accommodating area, some rollers are set, then on the passage
Combined by each roller and each pawpaw in passage is transported to drive area.For example, using sponge roller side by side, by each roller
Combine and each pawpaw in passage is transported to drive area.
Wherein in one embodiment, the pawpaw after simultaneously mark of parcels is collected in the end of each drive area.Preferably, collect
Coating of wax is wiped afterwards on pericarp, is then packed.Wherein in one embodiment, the pawpaw after automatic mark of parcels.Example
Such as, wax, fill protecting band, delivered after packaging.So as to realize automation mechanized operation, without excessive artificial waste.Preferably, in packaging
Afterwards, the outside output laser in packaging is marked, such as, in packaging bag or the outside of packing box, output laser enters rower
Note.
Wherein in one embodiment, some pawpaw test surfaces finish are taken.Surface smoothness is too poor, for example, wrapped up in one
Layer mud, it will have a strong impact on laser labelling effect.Wherein in one embodiment, according to surface smoothness, in working area
The surface of pawpaw is cleared up, for example, rolls across one layer of soft cloth layer；Preferably, one layer of screen cloth is rolled across, for example, it has mesh, mesh
Area is 0.5 to 2.3 square centimeter, is so easy to sieve lower dust, convenient for cleaning.Wherein in one embodiment, pawpaw is cleared up
Surface after, also take some pawpaw repetition measurement surface smoothnesses.Wherein in one embodiment, after repetition measurement surface smoothness, sentence
Whether disconnected surface smoothness meets the requirements, and otherwise gives notice.Wherein in one embodiment, sent using wireless communication mode
Notify.Wherein in one embodiment, give notice to mobile terminal.So, even automation mechanized operation, when there is problem
First hand notice can also in time be known, so as to process rapidly, solve problem.Wherein in one embodiment, short message is sent
Cease mobile phone.Wherein in one embodiment, the power of output laser is set according to surface smoothness；For example, surface smoothness
Higher, then the power for exporting laser is smaller.Wherein in one embodiment, the mark of output laser is set according to surface smoothness
Time；For example, surface smoothness is higher, then the mark time for exporting laser is shorter.
Wherein in one embodiment, accommodating area is slightly above drive area, so, can suitably utilize gravity, saving energy consumption.
Wherein in one embodiment, multiple drive areas are set in accommodating area side；So, side is put into pawpaw, and opposite side enters biography
Dynamic area, convenient operation.Wherein in one embodiment, accommodating area sets rolled portion, the top of its each drive area of connection.For example roll
Dynamic portion is roller etc..For example, setting some outlets in accommodating area side, each outlet top sets loose-leaf, one is installed at loose-leaf
The door-plate of individual extrapolation, so, when the pawpaw inside accommodating area receives thrust or Action of Gravity Field, door-plate outwards open by top,
Pawpaw is released from outlet.Preferably, the width of each outlet is about 3 width of pawpaw, in order to avoid block.
For example, the top of drive area judges that to have pawpaw to enter fashionable, start transmission.For example, when drive area starts transmission, sending
Powertrain information, start feeling should.For example, when sending powertrain information, the view data at the top of drive area is also obtained, according to the figure
As data point reuse pre-sets pattern.For example, being sent to laser pre-set pattern after adjusting using wireless transmission method.Example
Such as, when sensing a certain pawpaw by mark area, induction information is sent to laser.For example, using wireless transmission method to laser
Device sends induction information.
The example of one application is that the pawpaw of results is deposited in into working area, one or several is taken out every time and arrives accommodating
Area, in working area or accommodating area, or before accommodating area is positioned over, pre-processes to each pawpaw；Then by each pawpaw from
Accommodating area is moved to the top of some drive areas, and each drive area is driven a row pawpaw；Drive area side sets inductor, and adjoining is beaten
Mark area, when inductor senses a certain pawpaw by mark area, output laser is marked on the pawpaw；Then in each drive area
End collect mark after pawpaw.
Example of another application is, preset recording information, the place of production of the record information including pawpaw, production environment with
Implantation time etc.；Some pawpaws are positioned over accommodating area one by one；Each pawpaw is pushed into some drive areas from accommodating area, and is adjusted
The position of the pawpaw on drive area, makes it be at least partially disposed in recess, and base of fruit upward, senses a certain pawpaw by mark area
When, output laser is marked pattern on the pawpaw；After indicia patterns, step is also performed：Output laser is on the pawpaw
Mark curved surface Quick Response Code, wherein comprising the record information or its link.
It should be noted that other embodiments of the invention also include, the mutually group of the technical characteristic in the various embodiments described above
Laser processing method that conjunction is formed, can implementing.Each technical characteristic of embodiment described above can carry out arbitrary group
Close, to make description succinct, combination not all possible to each technical characteristic in above-described embodiment is all described, however,
As long as the combination of these technical characteristics does not exist contradiction, the scope of this specification record is all considered to be.The above is implemented
Example only expresses several embodiments of the invention, and its description is more specific and detailed, but therefore can not be interpreted as to hair
The limitation of bright the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, not departing from present inventive concept
On the premise of, various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, patent of the present invention
Protection domain should be determined by the appended claims.
Claims (6)
1. a kind of laser processing method, it is characterised in that comprise the following steps：
Some pawpaws are positioned over working area；Some pawpaw test surfaces finish are taken, according to surface smoothness, in working area
The surface of pawpaw is cleared up, is cleared up after the surface of pawpaw, also take some pawpaw repetition measurement surface smoothnesses；
Some pawpaws are positioned over accommodating area from working area；
Each pawpaw is moved to the top of some drive areas from accommodating area, each drive area is driven a row pawpaw；
Wherein, some recesses are set in drive area, when each pawpaw is moved to the top of drive area from accommodating area, mechanical arm is obtained
The image of pawpaw, according to the base of fruit of pawpaw, adjusts the position of pawpaw so that the bottom of each pawpaw enters a recess, and fruit
The base of a fruit is upward；
According to the mean size of pawpaw, pre-set pattern, including pattern content and size；
When sensing a certain pawpaw by mark area, the power of output laser is set according to surface smoothness, output laser is in the wood
The pattern is marked on melon；According to the average skin depth of pawpaw, the thickness being marked is pre-seted, output laser is on the pawpaw
When being marked, the thickness being marked is the 1.6%-2.3% of the average skin depth；Also, the position coating after mark
Wax layer；
During indicia patterns, between outline position and center, according to the thickness of lines, the time of mark is adjusted so that from
Outline position is to center, and the time of mark is gradually short, wherein, the mark time of position centered on the mark time of outline position
2 times, the mark time therebetween presses linear decrease；
Pawpaw after mark is collected in the end of each drive area；
Wherein, before pawpaw being positioned over into accommodating area, also including step：Preset recording information, the record information includes pawpaw
The place of production, production environment and implantation time；Also, after indicia patterns, also perform step：Output laser is marked on the pawpaw
Curved surface Quick Response Code, wherein the link comprising the record information or the record information；Wherein, the ratio of width to height of curved surface Quick Response Code is
0.62 to 0.65；
Wherein, when output laser is marked on the pawpaw, comprise the following steps：Figure to be marked is divided into alternate two
Point, each section is some parallel lines, and two parts are spliced into figure to be marked；The figure to be marked include the pattern or
Quick Response Code described in person.
2. laser processing method according to claim 1, it is characterised in that after repetition measurement surface smoothness, judge any surface finish
Whether degree meets the requirements, and otherwise gives notice.
3. laser processing method according to claim 2, it is characterised in that given notice using wireless communication mode.
4. laser processing method according to claim 3, it is characterised in that give notice to mobile terminal.
5. laser processing method according to claim 4, it is characterised in that send short message to mobile phone.
6. laser processing method according to claim 1, it is characterised in that the mark of output laser is set according to surface smoothness
Between clocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101352974A (en) * | 2008-09-05 | 2009-01-28 | 深圳市大族激光科技股份有限公司 | Laser marking device for capsules and method for marking capsules using the devcie |
| CN103101325A (en) * | 2012-12-10 | 2013-05-15 | 海宁伊满阁太阳能科技有限公司 | Method and device of agricultural and sideline product laser marking and products with laser marks |
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| CN203995127U (en) * | 2014-08-26 | 2014-12-10 | 深圳市艾雷激光科技有限公司 | The assembly line conveying device of laser marking machine |
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| CN103116862A (en) * | 2012-12-10 | 2013-05-22 | 海宁伊满阁太阳能科技有限公司 | Irregular article laser mark tracking method, system, device and products |
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| US6160568A (en) * | 1997-05-27 | 2000-12-12 | Sdl, Inc. | Laser marking system and method of energy control |
| CN101352974A (en) * | 2008-09-05 | 2009-01-28 | 深圳市大族激光科技股份有限公司 | Laser marking device for capsules and method for marking capsules using the devcie |
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