CN110253148A - A kind of laser processing of random pattern, system and method for anti-counterfeit - Google Patents
A kind of laser processing of random pattern, system and method for anti-counterfeit Download PDFInfo
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- CN110253148A CN110253148A CN201910626642.5A CN201910626642A CN110253148A CN 110253148 A CN110253148 A CN 110253148A CN 201910626642 A CN201910626642 A CN 201910626642A CN 110253148 A CN110253148 A CN 110253148A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
Abstract
The present invention relates to field of laser processing, and in particular to a kind of laser processing of random pattern, system and method for anti-counterfeit.A kind of laser processing of random pattern, laser generate unique laser according to one group of supplemental characteristic being made of multiple laser parameters, comprising steps of generating a pattern with uniqueness at random；The pattern is processed on workpiece by laser；Wherein, in laser processing procedure, an at least laser parameter for supplemental characteristic corresponding to laser is variation.A kind of laser processing of the present invention by random pattern, system, production has uniqueness pattern, repetitive rate is extremely low, it improves the randomness of pattern, uniqueness, be difficult to replicability, texture can also be made to reach the identifiable level of difference of naked eyes, the laser enhancing grain effect for using multiple groups supplemental characteristic, promotes resolution.
Description
Technical field
The present invention relates to field of laser processing, and in particular to a kind of laser processing of random pattern, system and anti-fake
Method.
Background technique
In normal anti-counterfeit field, texture anti-fake technology has consequence, and texture anti-fake is with object materials
Property the texture that shows of the structure of matter be identification characteristics a kind of anti-counterfeiting technology.Such as leaf line, wood grain, the stone of nature
Line, unrestrained fragment, fibroplastic distribution, these are all random, unique, it is difficult to artificial duplication.If on commodity
It is added to texture anti-fake, is added to fingerprint just as to commodity.However, the technology is in the unconspicuous material of certain textural characteristics
Implementing on (such as ceramics, glass of pure color etc.) can be relatively difficult, while needing the professional equipments such as microscope quasi-
Really identification.
Laser marking/engraving technology can be formed on material and be difficult to the characteristics of processing using laser high-energy density
The texture removed.The introducing of laser technology, material (such as glass, ceramics etc.) not apparent enough for those textural characteristics realize line
Manage anti-fake be possibly realized.
However, mark/engraving speed speed, hot spot thickness, width of nick etc. are all in current industrial field of laser processing
Regular accurately to control, pursuit is consistency, stability and the repeatability processed.That is, conventional method is sharp
It is very simple with laser marking/the carve out consistent texture of external appearance characteristic, but texture anti-fake technology just need on the contrary it is each
The textural characteristics of secondary generation are all random, unique, it is difficult to duplication.This is a kind of anti-convention in present laser manufacture field
, the technique being difficult to realize.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, a kind of random pattern is provided
It is excessively consistent using laser marking/carve out external appearance characteristic to solve conventional method for laser processing, system and method for anti-counterfeit
Problem.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of laser processing side of random pattern
Method, laser generate unique laser, comprising steps of at random according to one group of supplemental characteristic being made of multiple laser parameters
Generate a pattern with uniqueness；The pattern is processed on workpiece by laser；Wherein, in laser processing procedure, swash
An at least laser parameter for supplemental characteristic corresponding to light is variation.
Wherein, preferred version is that random the step of generating a pattern with uniqueness includes: to preset multiple pictures；Choosing
It selects an at least picture to be processed, forms the pattern；Wherein, processing includes scaling, rotation, beveling, distortion, perspective, becomes
One of shape, overturning, splicing, duplication, overlapping, part selection are a variety of.
Wherein, preferred version is that random the step of generating a pattern with uniqueness, which includes: that setting is a plurality of, to be had at random
The line of vector in length or/and direction, to constitute pattern；Wherein, the mode that line of vector is arranged is random generates；Alternatively, setting arrow
The mode of amount line is the multiple nodes for constituting different line of vector of setting, adjusts the position of the node at random, forms a plurality of arrow
Measure line.
Wherein, preferred version is: further comprising the steps of: the variation according to process time, an at least laser parameter is in default model
Enclose interior random variation.
Wherein, preferred version is to further comprise the steps of: to be provided with multiple groups supplemental characteristic, and supplemental characteristic described in each group
An at least laser parameter is to be randomly provided；Total machining locus of pattern is divided into multistage and divides machining locus, and each described point adds
Work track configures one group of supplemental characteristic；The correspondence point of the pattern is processed on workpiece by the laser of different groups of supplemental characteristics
Machining locus；Wherein, currently the laser parameter of group supplemental characteristic gradual change and transits to next group of supplemental characteristic in process.
Wherein, preferred version is, it includes: according to figure that total machining locus of pattern, which is divided into the step of multistage divides machining locus,
Total machining locus of case generates multiple nodes at random, and forms multistage based on dividing machining locus between any two node；Alternatively,
Total machining locus of pattern is divided into multistage according to process time and divides machining locus.
Wherein, preferred version is: the laser parameter of the supplemental characteristic includes selected laser parameter and non-selected laser ginseng
Number, and at least one selected laser parameter is changed；Wherein, the selected laser parameter include laser trigger signal frequency,
One of mark/carving speed, energy/electric current, focal position are a variety of.
Wherein, preferred version is: being changed at least one non-selected laser parameter.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of laser processing system of random pattern
System, comprising: pattern gen-eration module, it is random to generate a pattern with uniqueness；Laser, according to by multiple laser parameter institutes structure
At one group of supplemental characteristic, generate unique laser；Motion control card is connect with laser, and control laser is processed on workpiece
The pattern；Laser control module is connect with pattern gen-eration module, laser and motion control card respectively, obtains pattern, control
Laser generates different laser, and the pattern is processed on workpiece.
The technical solution adopted by the present invention to solve the technical problems is: a kind of method for anti-counterfeit is provided, comprising steps of using
The laser processing processes the pattern on workpiece；It identifies the pattern and records on the server；Subsequent identification
The pattern simultaneously carries out similarity-rough set with the pattern recorded on server, to identify the true and false of workpiece.
The beneficial effects of the present invention are, compared with prior art, the laser processing that the present invention passes through a kind of random pattern
Method, system, production have uniqueness pattern, and repetitive rate is extremely low, improve the randomness of pattern, uniqueness, are difficult to replicability, also
Texture can be made to reach the identifiable level of difference of naked eyes, that is, use the laser enhancing grain effect of multiple groups supplemental characteristic, promoted and known
It does not spend；Further, workpiece anti-counterfeit capability is improved, the complexity of fraud is improved, there is pattern not reproducible.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the flow diagram of the laser processing of random pattern of the present invention；
Fig. 2 is the random flow diagram for generating a pattern embodiments one with uniqueness of the invention；
Fig. 3 is the random flow diagram for generating a pattern embodiments two with uniqueness of the invention；
Fig. 4 is the flow diagram that the present invention processes the pattern embodiments one by laser on workpiece；
Fig. 5 is the flow diagram that the present invention processes the pattern embodiments two by laser on workpiece；
Fig. 6 is that total machining locus of pattern is divided into the flow diagram that multistage divides machining locus by the present invention；
Fig. 7 is the structural schematic diagram of the laser-processing system of random pattern of the present invention；
Fig. 8 is the flow diagram of method for anti-counterfeit of the present invention.
Specific embodiment
Now in conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figure 1, the present invention provides a kind of preferred embodiment of the laser processing of random pattern.
A kind of laser processing of random pattern, comprising steps of
Step S10, a pattern with uniqueness is generated at random；
Step S20, the pattern is processed on workpiece by laser.
Wherein, in laser processing procedure, an at least laser parameter for supplemental characteristic corresponding to laser is variation.
Specifically, by laser on workpiece processing graphic pattern, such as glass pieces, ceramic workpiece；Pattern has uniqueness,
It is randomly generated, while using (the unique laser generated using the different parameters data) mark of different types of laser and engraving
Corresponding pattern out not only improves the randomness of pattern, uniqueness, is difficult to replicability, moreover it is possible to which so that texture is reached naked eyes can recognize
Level of difference need precisely to identify certainly, it is also necessary to carried out by specific equipment, such as camera, dedicated identification device, aobvious
Micro mirror etc..
In the present embodiment, the laser parameter of the supplemental characteristic includes selecting laser parameter and non-selected laser parameter,
And in laser processing procedure, at least one selected laser parameter is changed；Wherein, the selected laser parameter includes laser
One of trigger signal frequency, mark/carving speed, energy/electric current, focal position are a variety of.
Wherein, laser trigger signal frequency, i.e. Q frequency are supplied to laser, output laser each second by control card generation
Pulse number, if 20KHz indicate each second export 20000 pulses, if Q frequency it is smaller, the spacing of obtained processing stand is bigger；
Mark/carving speed, when laser processing, the laser beam speed mobile in surface to be machined, if speed is smaller, unit time energy
Density is bigger, and the deeper indentation the thicker；Energy/electric current, duty ratio, release time, size of current comprising laser trigger signal, most
The big ratio value etc. for allowing energy is mainly used for changing the variation of laser trigger signal, the output variation of Lai Shixian energy of lasers
Control；Focal position is incident to the focal spot height position of workpiece, realizes the processing of different depth.
Can by the way that the selected laser parameters of one or more are changed, and can also simultaneously to non-selected laser parameter into
Row variation, obtains the laser of different " types ", and it is different to generate the different track of deep mixed track, width, shape size
The different track etc. of track, marks on surface.Specifically, it can refer to following table, following table includes (the existing laser normally laser machined of table 1
The setting of parameter) and table 2 (setting for the laser parameter that the present invention laser machines).Wherein, total machining locus of pattern is divided into
Multistage divides machining locus, forms multiple nodes, laser parameter when table is the node.
| Q frequency | Mark/carving speed | Energy/electric current | Non-selected laser parameter | |
| Node 1 | a | b | C | It is fixed |
| Node 2 | a | b | C | It is fixed |
| Node 3 | a | b | C | It is fixed |
| Node 4 | a | b | C | It is fixed |
| Node 5 | a | b | C | It is fixed |
Table 1
Table 2
Wherein, in Fig. 1 and Fig. 2, a, b, c, A1-A5, B1-B5, C1-C5 can indicate a numerical value, and, table 2 uses
Be the mode being changed to each selected laser parameter, and in table 2 divide node corresponding to machining locus be with
Machine setting.And " fixation " refers to that the numerical value of parameter immobilizes, " being not fixed " refers to that the numerical value of parameter is variable to be not fixed
Change.
As shown in Figures 2 and 3, the present invention provides the random preferred embodiment for generating a pattern with uniqueness.
The random pattern with uniqueness that generates provides three kinds of schemes.
Scheme one generates a random pattern by special-purpose software, and the bitmap with random pattern, bitmap is such as randomly generated
Picture (bitmap), also known as dot matrix image or grating image, what a single point by being referred to as pixel (picture element) formed.
Scheme two, with reference to Fig. 2, random the step of generating a pattern with uniqueness, includes:
Step S111, multiple pictures are preset；
Step S112, a selection at least picture is processed, and forms the pattern；
Wherein, processing includes scaling, rotation, beveling, distortion, perspective, deformation, overturning, splicing, duplication, overlapping, part choosing
It one of selects or a variety of.
Specifically, modes self are described etc. by network acquisition, Software Create, manager user, are stored with N bitmaps,
Or the local picture of the bitmap, also, one or more picture will be selected to be added in N bitmaps or its local picture
Work, processing include but is not limited to scaling, rotation, beveling, distortion, perspective, deformation, overturning, splicing, duplication, overlapping, part choosing
It selects, such as carries out overlapping combinations using two pictures, preferably partly overlap combination, forms required pattern.
For example, selection one picture processed, the reproducible picture, after carry out splicing or overlap operation, alternatively, directly
Connect and the operation such as zoom in and out, rotate, chamferring, distorting, having an X-rayed, deforming, overturning to picture, in the hope of the picture after processing with original
Beginning picture is not completely identical.
Scheme three, with reference to Fig. 3, random the step of generating a pattern with uniqueness, includes:
Step S121, a plurality of line of vector with random-length or/and direction is set, to constitute pattern；
Wherein, the mode that line of vector is arranged includes: A, random generation；B, multiple sections for constituting different line of vector are set
Point adjusts the position of the node at random, forms a plurality of line of vector.
The scheme three includes two preferred embodiments, and mode A is directly to generate a plurality of line of vector by special-purpose software, works as arrow
After the quantity of amount line reaches a certain level, a pattern with uniqueness is formed.Option b is that (such as mode A is raw in a master pattern
At pattern) in, obtain two end nodes of each line of vector, by adjusting position of the node in X/Y plane, formed new more
Line of vector forms a pattern with uniqueness；It is of course also possible in turn, multiple nodes first be arranged, then node is constituted
Master pattern with multiple line of vector forms new a plurality of line of vector by adjusting position of the node in X/Y plane, is formed
One pattern with uniqueness.
As shown in Figure 4 and Figure 5, the present invention provides through laser processes the preferred embodiment of the pattern on workpiece.
The pattern is processed on workpiece using the laser of multiple groups supplemental characteristic, two schemes are provided.
Scheme one, with reference to Fig. 4, through laser the step of processing the pattern on workpiece further include:
Step S211, according to the variation of process time, an at least laser parameter changes at random within a preset range.
Step S212, the pattern is processed on workpiece.
Specifically, in step S21, unpredictable problem is generated in order to prevent, needs first to preset the variation of laser parameter
Range；And the continuous variation with process time, the predictable random variation of range is carried out to laser parameter, is obtained different
The laser of " type " generates the different track of the different track of deep mixed track, width, shape size, marks on surface not
One track etc..
Scheme two, with reference to Fig. 5, through laser the step of processing the pattern on workpiece further include:
Step S221, be provided with multiple groups supplemental characteristic, and an at least laser parameter for supplemental characteristic described in each group be with
Machine setting；
Step S222, total machining locus of pattern is divided into multistage and divides machining locus, and each described divide machining locus equal
Configure one group of supplemental characteristic；
Step S223, divide processing rail by the correspondence that the laser of different groups of supplemental characteristics processes the pattern on workpiece
Mark；
Wherein, currently the laser parameter of group supplemental characteristic gradual change and transits to next group of supplemental characteristic in process.
Specifically, it is first stored with multiple groups supplemental characteristic, sequential makes laser in gradual change preferably by rational sorting
Progress can be mitigated in journey, so that excessive variation leads to damage or the workpiece damage of laser；According to pattern is automatic or people
A total machining locus is arranged in work, and total machining locus is divided into multistage according to fixed range or random distance and divides machining locus, often
One section of point of machining locus configures one group of supplemental characteristic, it is subsequent it is described divide laser machined in machining locus when, using institute
Laser corresponding to the group supplemental characteristic of configuration is processed, and in process, the current laser parameter for organizing supplemental characteristic
Gradual change and transit to next group of supplemental characteristic in process；Certainly, here there are two types of may, first be gradual change be will be previous
Group supplemental characteristic is gradient to next group of supplemental characteristic, is also possible to carry out random gradual change to previous group supplemental characteristic, arrives next group
Supplemental characteristic leaps to the supplemental characteristic currently organized.
As shown in fig. 6, the present invention, which is provided, is divided into the preferred embodiment that multistage divides machining locus for total machining locus of pattern.
Total machining locus of pattern, which is divided into the step of multistage divides machining locus, includes:
Step S61, multiple nodes are generated according to total machining locus of pattern at random；
Step S62, and multistage is formed based on dividing machining locus between any two node；
Alternatively, total machining locus of pattern be divided into the step of multistage divides machining locus including:
Step S63, total machining locus of pattern is divided by multistage according to process time and divides machining locus.
Wherein, step S61 and step S63 is alternative step, and after step S62 and step S63 are respectively completed, into
Enter step S20.
Specifically, in step S61 and step S62, on the basis of step S221 and step S222, in total machining locus
The upper multiple nodes of setting form multistage based on machining locus is divided between any two node, still further, can carry out to node
Position adjustment, further increases the randomness of pattern, uniqueness, is difficult to replicability.
Identical as above-mentioned steps S61 and step S62 as step S63, unique difference is to be used as to be divided by process time
Multistage divides machining locus, can also be using node as time separation；It is similar with step S211, only definitely add with point
Work track is final dividing unit.
As shown in fig. 7, the present invention provides the preferred embodiment of the laser-processing system of random pattern.
A kind of laser-processing system of random pattern, including pattern gen-eration module 300, laser 200, motion control card and
Laser control module 100, wherein pattern gen-eration module 300 generates a pattern with uniqueness, 200 basis of laser at random
One group of supplemental characteristic being made of multiple laser parameters, generates unique laser, and motion control card 400 and laser 200 connect
Connect, control laser processes the pattern on workpiece, laser control module 100 respectively with pattern gen-eration module 300, laser
200 and motion control card 400 connect, obtain pattern, control laser 200 generates different laser, and processes institute on workpiece
State pattern.
Specifically, laser control module 100 is dedicated control processor, or setting laser controlling on computers is soft
Part controls laser-processing system comprehensively, for realizing man-machine communication, and can intuitively be shown by laser machining software
And the figure and various parameters processed needed for adjustment.
The control of 400 stimulated light control module 100 of motion control card, it is real by processing request needed for laser control module 100
When be converted to the various identifiable signals of functional hardware module, such as voltage signal, digital signal, realize laser control module
100 pairs of lasers 200 directly control.
Laser 200 provides controllable, metastable laser beam, and connects to power supply；Also, 200, laser
According to one group of supplemental characteristic being made of multiple laser parameters, unique laser is generated, supplemental characteristic described in each group is at least
One laser parameter is to be randomly provided；It is controlled when the setting of the laser parameter by laser control module 100.Alternatively, laser
200 in process change supplemental characteristic at random, form different laser.
Certainly, laser-processing system further includes optical mirror slip, is used for propagated laser beam, and is carried out as required to laser beam whole
Shape changes the purposes such as direction, focusing；It further include scanning galvanometer or other motion modules, for implementing the movement of change laser beam
Speed, motion profile.
As shown in figure 8, the present invention provides the preferred embodiment of method for anti-counterfeit.
A kind of method for anti-counterfeit, comprising steps of
Step S31, using the laser processing, the pattern is processed on workpiece；
Step S32, it identifies the pattern and records on the server；
Step S33, subsequent to identify the pattern and carry out similarity-rough set with the pattern recorded on server, to know
The true and false of other workpiece.
Specifically, the pattern, the figure are arranged on the corresponding position of workpiece by above-mentioned laser processing first
Case meets randomness, uniqueness, is difficult to replicability.After obtaining the pattern, the pattern on workpiece is identified by identification facility,
Or laser control module 100 is obtained by computer software and wants mark/engraving pattern, and record is on the server, when
Right server can indicate the explanation of corresponding workpiece.
Further, in step S33, by the subsequent identification to workpiece, such as using naked eyes or amplifier, microscope
Tool identifies the pattern, and carries out similarity-rough set with the pattern recorded on server, can be sentenced by people itself
It is disconnected, it can also be judged using image comparison software, so that the similarity degree of identification icon, judges the true and false of workpiece, from
And realize fake certification.
As described above, only preferred embodiment is not intended to limit the scope of the present invention, Fan Yibenfa
Equivalent change or modification made by bright claim is all that the present invention is covered.
Claims (10)
1. a kind of laser processing of random pattern, laser is according to one group of parameter number being made of multiple laser parameters
According to generating unique laser, which is characterized in that comprising steps of
It is random to generate a pattern with uniqueness；
The pattern is processed on workpiece by laser；
Wherein, in laser processing procedure, an at least laser parameter for supplemental characteristic corresponding to laser is variation.
2. laser processing according to claim 1, which is characterized in that one pattern with uniqueness of random generation
Step includes:
Preset multiple pictures；
A selection at least picture is processed, and the pattern is formed；
Wherein, it processes including scaling, rotation, beveling, distort, have an X-rayed, deforming, overturning, splicing, replicates, is overlapped, in local selection
It is one or more.
3. laser processing according to claim 1 or 2, which is characterized in that random to generate a figure with uniqueness
The step of case includes:
The a plurality of line of vector with random-length or/and direction is set, to constitute pattern；
Wherein, the mode that line of vector is arranged is random generates；Alternatively, the mode of setting line of vector is that multiple composable differences are arranged
The node of line of vector adjusts the position of the node at random, forms a plurality of line of vector.
4. laser processing according to claim 1, it is characterised in that: further comprise the steps of:
According to the variation of process time, an at least laser parameter changes at random within a preset range.
5. laser processing according to claim 1, which is characterized in that further comprise the steps of:
It is provided with multiple groups supplemental characteristic, and an at least laser parameter for supplemental characteristic described in each group is to be randomly provided；
Total machining locus of pattern is divided into multistage and divides machining locus, and each described machining locus is divided to configure one group of parameter number
According to；
Divide machining locus by the correspondence that the laser of different groups of supplemental characteristics processes the pattern on workpiece；
Wherein, currently the laser parameter of group supplemental characteristic gradual change and transits to next group of supplemental characteristic in process.
6. laser processing according to claim 5, which is characterized in that total machining locus of pattern is divided into multistage point
The step of machining locus includes:
Multiple nodes are generated at random according to total machining locus of pattern, and form multistage based on point processing between any two node
Track；
Alternatively, total machining locus of pattern, which is divided into multistage, according to process time divides machining locus.
7. according to claim 1, laser processing described in 4,5 or 6, it is characterised in that: the laser of the supplemental characteristic is joined
Number includes selected laser parameter and non-selected laser parameter, and is changed at least one selected laser parameter；Wherein, the choosing
Determining laser parameter includes one of laser trigger signal frequency, mark/carving speed, energy/electric current, focal position or more
Kind.
8. laser processing according to claim 7, which is characterized in that further comprise the steps of: non-selected sharp at least one
Optical parameter is changed.
9. a kind of laser-processing system of random pattern, it is characterised in that: include:
Pattern gen-eration module, it is random to generate a pattern with uniqueness；
Laser generates unique laser according to one group of supplemental characteristic being made of multiple laser parameters；
Motion control card is connect with laser, and control laser processes the pattern on workpiece；
Laser control module, it can be achieved that laser processing a method as claimed in any one of claims 1-8, respectively with pattern generation mould
Block, laser are connected with motion control card, obtain pattern, control laser generates laser, and the pattern is processed on workpiece.
10. a kind of method for anti-counterfeit, which is characterized in that comprising steps of
Using laser processing a method as claimed in any one of claims 1-8, the pattern is processed on workpiece；
It identifies the pattern and records on the server；
It is subsequent to identify the pattern and carry out similarity-rough set with the pattern recorded on server, to identify the true of workpiece
It is pseudo-.
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Application publication date: 20190920 |