CN107552966A - Laser mark printing device and product marking method - Google Patents
Laser mark printing device and product marking method Download PDFInfo
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- CN107552966A CN107552966A CN201710898373.9A CN201710898373A CN107552966A CN 107552966 A CN107552966 A CN 107552966A CN 201710898373 A CN201710898373 A CN 201710898373A CN 107552966 A CN107552966 A CN 107552966A
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Abstract
The present invention relates to a kind of laser mark printing device and product marking method.Above-mentioned product marking method, including：Product is positioned on linear stage, product is moved with linear stage；The mark region division of product is multiple mark units by the moving direction along linear stage and the direction perpendicular to moving direction；Gather the displacement of the lines data of linear stage；The laser generator of laser mark printing device is measured respectively the distance between with multiple test points of mark unit, obtains multiple range data；The actual mark depth of mark unit is obtained according to multiple range data；By actual mark depth compared with the theoretical mark depth of mark unit, the offset of the mark depth of mark unit is obtained；And the power output of laser generator is adjusted according to offset, the focal position and mark region for making the laser beam after light path system are adapted, and laser beam is carried out reliably mark to product, so that the mark effect of laser mark printing device is preferable.
Description
Technical field
The present invention relates to the technical field of Laser Processing, more particularly to a kind of laser marking machine and products thereof mark side
Method.
Background technology
Laser marking machine is to stamp permanent mark in a variety of material surfaces with laser beam.The effect of mark is logical
Deep layer material is exposed in the evaporation for crossing entry material, so as to carve pattern, trade mark and the word of fineness.The type bag of laser marking machine
Include：CO2 laser marking machines, semiconductor laser marking and laser marking machine etc..Laser marking machine requires applied to some
The more mark of fine and higher precision product, for example, leading to applied to electronic component, integrated circuit, electrical engineering and electric apparatus, mobile phone
News, hardware, tool fitting, precision instruments, glasses clock and watch, jewellery ornaments, auto parts machinery, plastic press key, building materials and pvc pipe
The mark of material etc..
When the mark region of product is linearly, because the accuracy of manufacture by product is influenceed, put down the mark of product
Face is frequently not plane, but rough curved surface.Due to laser marking machine laser light mechanism and mark plane distance not
It is equal, make the thickness of the label after laser marking machine mark different, or even there is no marking target situation, so that the mark of product
Reliability it is poor.
The content of the invention
Based on this, it is necessary to for marking machine exist no marking mark or mark reliability it is poor the problem of, there is provided one kind swashs
Light marking device and product marking method.
A kind of product marking method, including：
The product is positioned on linear stage, the product is moved with the linear stage；
Along the moving direction of the linear stage and perpendicular to the direction of the moving direction by the mark of the product
Region division is multiple mark units；
Gather the displacement of the lines data of the linear stage；
It is more with the mark unit respectively to the laser generator of each mark unit measurement laser mark printing device
The distance between individual test point, obtain multiple range data；
The actual mark depth of the mark unit is obtained according to multiple range data；
By the actual mark depth compared with the theoretical mark depth of the mark unit, the mark list is obtained
The offset of the mark depth of member；And
The power output of the laser generator is adjusted according to the offset.
In one of the embodiments, mark direction of multiple test points along the mark unit is spaced apart, and is made
Mark unit of multiple test points for place is representative, so that multiple range data corresponding to multiple test points are more
Accurately, so that the better reliability of the mark of laser marking machine.
In one of the embodiments, the line of multiple test points is in polyline shaped.
In one of the embodiments, the power output of the laser generator is adjusted according to the offset, also before
Including step：
The offset of the mark depth of multiple mark units is fitted, the mark for obtaining the region up to standard is deep
The offset curve of degree, wherein the offset curve corresponds with the displacement data；
The offset of the laser generator is obtained according to the offset curve and the displacement of the lines data.
In one of the embodiments, the step of offset of the mark depth of multiple mark units being fitted
Including：
Denoising is carried out to the compensation Value Data of the mark depth of multiple mark units, compensated with removing in Value Data
Noise, ensure the accuracy of follow-up data operation result；
Compensation Value Data after denoising is fitted, obtains the offset curve.
In one of the embodiments, the compensation Value Data after denoising is fitted using least square method.
In one of the embodiments, the actual mark depth of the mark unit is obtained according to multiple range data
The step of include：
Multiple range data are subjected to denoising, to remove the noise data in multiple range data, avoided in data
Noise effect follow-up data accuracy；
Range data after denoising is averaged, obtains the actual mark depth of the mark unit.
In one of the embodiments, the displacement of the lines data of the linear stage are gathered by displacement transducer.
In one of the embodiments, along the moving direction of the linear stage by the mark region division of the product
For multiple mark units, also include step before：
The product is fixed on the linear stage, moved to prevent product relative to mobile work platform.
A kind of laser mark printing device, mark is carried out using above-mentioned product marking method.
Product, is positioned on linear stage, makes product by above-mentioned laser mark printing device and product marking method first
Moved with linear stage；Then along the moving direction of linear stage and perpendicular to the direction of the moving direction by product
Mark region division is multiple mark units, and the number size of mark unit, mark can be divided according to the size in mark region
The number of unit is more, and the offset curve subsequently obtained is closer to actual；Then the displacement of the lines data of linear stage are gathered,
To obtain the displacement data of linear stage；Then the laser generator of laser mark printing device is measured each mark unit
The distance between respectively with multiple test points of mark unit, obtain multiple range data；Then obtained according to multiple range data
To the actual mark depth of mark unit；Then by actual mark depth compared with the theoretical mark depth of mark unit,
The offset of the mark depth of mark unit is obtained, i.e., fortune is made the difference to the theoretical mark depth of actual mark depth and mark unit
Calculate；The power output of laser generator is finally adjusted according to offset, makes the focal position of the laser beam after light path system
Be adapted with mark region, make laser beam to product carry out reliably mark so that the mark effect of laser mark printing device compared with
It is good.
Brief description of the drawings
Fig. 1 is the flow chart of the product marking method of an embodiment；
Fig. 2 is another flow chart of product marking method shown in Fig. 1；
Fig. 3 is the another flow chart of product marking method shown in Fig. 1；
Fig. 4 is the step S112 of product marking method described in Fig. 1 flow chart；
Fig. 5 is the step S109 of product marking method described in Fig. 1 flow chart.
Embodiment
For the ease of understanding the present invention, laser mark printing device and product marking method are carried out below with reference to relevant drawings
More fully describe.The preferred embodiment of laser mark printing device and product marking method is given in accompanying drawing.But laser marking
Device and product marking method can be realized in many different forms, however it is not limited to embodiment described herein.Conversely
Ground, there is provided the purpose of these embodiments be make it is more thorough complete to the disclosure of laser mark printing device and product marking method
Face.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Herein in the used in the description of laser mark printing device and product marking method
Term be intended merely to describe specific embodiment purpose, it is not intended that in limitation the present invention.Term as used herein
" and/or " include the arbitrary and all combinations of one or more related Listed Items.
For example, a kind of product marking method, including：For example, the product is positioned on linear stage, make the production
Product move with the linear stage；For example, along the moving direction of the linear stage and perpendicular to the moving direction
The mark region division of the product is multiple mark units by direction；For example, gather the displacement of the lines number of the linear stage
According to；For example, the laser generator for measuring laser mark printing device to each mark unit is more with the mark unit respectively
The distance between individual test point, obtain multiple range data；For example, obtain the mark unit according to multiple range data
Actual mark depth；For example, the actual mark depth is obtained compared with the theoretical mark depth of the mark unit
To the offset of the mark depth of the mark unit；For example, and the laser generator is adjusted according to the offset
Power output.For example, a kind of product marking method, including：The product is positioned on linear stage, make the product with
The linear stage movement；Moving direction along the linear stage and the direction perpendicular to the moving direction are by described in
The mark region division of product is multiple mark units；Gather the displacement of the lines data of the linear stage；Described beaten to each
The laser generator of unit measurement laser mark printing device is marked respectively the distance between with multiple test points of the mark unit, is obtained
To multiple range data；The actual mark depth of the mark unit is obtained according to multiple range data；By the reality
Mark depth obtains the compensation of the mark depth of the mark unit compared with the theoretical mark depth of the mark unit
Value；And the power output of the laser generator is adjusted according to the offset.
As shown in figure 1, the product marking method of an embodiment, including：
S101, the product is positioned on linear stage, the product is moved with the linear stage.Example
Such as, laser mark printing device includes pedestal, linear stage and marking mechanism, and linear stage is slidably connected on pedestal, will treated
The product of mark is positioned on linear stage, is that product slides with linear stage.Marking mechanism is on pedestal, marking machine
Structure is used to carry out mark to product.Marking mechanism is set to carry out mark to product.And for example, the rectangular shape in mark region of product or side
Shape is polygon-shaped.In the present embodiment, the rectangular shape in mark region of product.
S103, along the moving direction of the linear stage and perpendicular to the direction of the moving direction by the product
Mark region division is multiple mark units.The number of mark unit is more, and mark region division must be thinner, and obtained mark is deep
The offset of degree is more accurate, actual mark depth is carried out more reliably mark to mark region after offset compensates, also
It is understood that the number of mark unit is more, the offset curve subsequently obtained makes the mark of laser marking machine closer to reality
Reliability is better.
Referring also to Fig. 2, in one of the embodiments, along the moving direction of the linear stage by the product
Mark region division is multiple mark units, also includes step before：
S102, the product is fixed on the linear stage, moved to prevent product relative to mobile work platform.Example
Such as, laser mark printing device also includes detent mechanism, and detent mechanism is used to clamping product making clamping product in linear stage
In on linear stage.And for example, detent mechanism is magnetic suck mechanism, and detent mechanism, which is powered, produces magnetic attraction, by clamping product
In on linear stage.Certainly, in other embodiments, detent mechanism is not limited only to magnetic suck mode.For example, detent mechanism bag
Cylinder assembly and briquetting are included, linear stage is provided with boss.For cylinder assembly on boss, briquetting is defeated located at cylinder assembly
Go out end.Briquetting is used to be connected to product, makes clamping product in mobile work platform.
S105, gather the displacement of the lines data of the linear stage；For example, laser mark printing device also includes displacement sensing
Device, in mobile work platform, displacement transducer is used to measure the displacement of the lines of displacement transducer displacement transducer, obtains
The displacement of the lines data of linear stage.
S107, each mark unit is measured the laser generator of laser mark printing device respectively with the mark unit
The distance between multiple test points, obtain multiple range data.
In one of the embodiments, mark direction of multiple test points along the mark unit is spaced apart, and is made
Mark unit of multiple test points for place is representative, so that multiple range data corresponding to multiple test points are more
Accurately, so that the better reliability of the mark of laser marking machine.In one of the embodiments, the company of multiple test points
Line is in polyline shaped.
S109, the actual mark depth of the mark unit is obtained according to multiple range data.
S111, by the actual mark depth compared with the theoretical mark depth of the mark unit, obtain described
The offset of the mark depth of mark unit.
S114, the power output of the laser generator is adjusted according to the offset, makes laser mark printing device to mark
Unit carries out mark.
Above-mentioned product marking method is：Product is positioned on linear stage first, makes product with linear stage
It is mobile；Then along the moving direction of linear stage and perpendicular to the direction of the moving direction by the mark region division of product
For multiple mark units, can be got over according to the number size of the size in mark region division mark unit, the number of mark unit
More, the offset curve subsequently obtained is closer to actual；Then the displacement of the lines data of linear stage are gathered, to obtain linear work
Make the displacement data of platform；Then each mark unit is measured the laser generator of laser mark printing device respectively with mark list
The distance between multiple test points of member, obtain multiple range data；Then mark unit is obtained according to multiple range data
Actual mark depth；Then actual mark depth is obtained into mark unit compared with the theoretical mark depth of mark unit
Mark depth offset, i.e., difference operation is done to the theoretical mark depth of actual mark depth and mark unit；Last basis
Offset adjusts the power output of laser generator, makes focal position and the mark region phase of the laser beam after light path system
Adapt to, laser beam is carried out reliably mark to product, so that the mark effect of laser mark printing device is preferable.
As shown in figure 3, in one of the embodiments, the output work of the laser generator is adjusted according to the offset
Rate, also include step before：
S112, the offset of the mark depth of multiple mark units is fitted, obtains the region up to standard
The offset curve of mark depth, wherein the offset curve corresponds with the displacement data；
S113, the offset of the laser generator is obtained according to the offset curve and the displacement of the lines data.
As shown in figure 4, in one of the embodiments, the offset of the mark depth of multiple mark units is carried out
The step S112 of fitting includes：
S112A, denoising is carried out to the compensation Value Data of the mark depth of multiple mark units, to remove offset number
Noise in, ensure the accuracy of follow-up data operation result；
S112B, the compensation Value Data after denoising is fitted, obtains the offset curve.
In one of the embodiments, the compensation Value Data after denoising is fitted using least square method.
As shown in figure 5, in one of the embodiments, the reality of the mark unit is obtained according to multiple range data
The step S109 of border mark depth includes：
S109A, multiple range data are subjected to denoising, to remove the noise data in multiple range data, avoided
The accuracy of noise effect follow-up data in data；
S109B, the range data after denoising is averaged, obtain the actual mark depth of the mark unit.
In one of the embodiments, the displacement of the lines data of the linear stage are gathered by displacement transducer.
The present invention also provides a kind of laser mark printing device, and mark is carried out using above-mentioned product marking method.
For example, laser mark printing device includes pedestal, linear stage, drive mechanism, slide, lifting assembly, laser light mechanism
And controller.Pedestal includes the pedestal and support body being connected, and linear stage is rotationally connected with pedestal.Drive mechanism is located at base
On seat, and the output end of drive mechanism is connected with linear stage, and drive mechanism driving linear stage slides relative to pedestal.
Linear stage is used to carry product.Slide is slidably connected on support body.Lifting assembly is on pedestal, the power of lifting assembly
Output end is connected with slide, and lifting assembly driving slide slides relative to support body.Laser light mechanism includes laser generator and focusing
On the slide, laser generator is used to producing laser beam for component, laser generator and focus pack, and focus pack is by laser
Beam is focused on product, to carry out mark to product.Controller communicates to connect with lifting assembly and laser generator respectively, control
Device controls lifting assembly action according to the offset of mark depth, lifting assembly driving slide is slided relative to support body, makes to swash
The focus of light beam is preferably concentrated on product, and the reliability of mark is carried out so as to improve laser mark printing device to product.Example
Such as, lifting assembly is fixed on pedestal including lifting motor, the first sprocket wheel, the second sprocket wheel, chain and connector, lifting motor,
First sprocket wheel is in the output end of lifting motor, and the second sprocket wheel is rotationally connected with support body, and chain is socketed on the first chain respectively
On wheel and the second sprocket wheel.One end of connector is connected with chain, and the other end of connector is connected with slide.When lifting motor acts
When, lifting motor drive the first sprocket wheel rotate, the first sprocket wheel drive chain movement, due to connector both ends respectively with chain and
Slide connects, and chain-driving slide is slided relative to support body, and because laser generator and focus pack are on slide,
Laser generator and focus pack is set to be slided with slide relative to support body, focal position and the mark unit of laser mark printing device
Mark location be adapted so that laser mark printing device can to product carry out preferably mark.And for example, lifting assembly also wraps
Guide rod and sliding sleeve are included, guide rod is connected with support body, and sliding sleeve is socketed on guide rod and is slidably connected with guide rod, and sliding sleeve connects with slide
Connect, make the slip between slide and support body more steady.And for example, laser light mechanism also includes galvanometer component, and galvanometer component is located at cunning
On seat, galvanometer component is between laser generator and focus pack, and galvanometer component is by Laser Beam Polarization to focus pack,
So regulation can realize the regulation of the focal length of laser beam by galvanometer component by the power of the laser beam of focus pack.
For example, drive mechanism, which includes motor, first pulley, the second belt wheel, driving belt and fixed plate, motor, is fixed on base
On seat, in the output end of motor, the second belt wheel is rotationally connected with pedestal first pulley, and driving belt is socketed on the respectively
On one belt wheel and the second belt wheel, the both ends of fixed plate are connected with linear stage and driving belt respectively.When motor action, electricity
Machine drives first pulley to rotate, and because the second belt wheel is rotationally connected with pedestal, first pulley rotates to be driven by driving belt
Second belt wheel rotates, and because the both ends of fixed plate are connected with linear stage and driving belt respectively, drives driving belt
Linear stage slides relative to pedestal.And for example, motor is servomotor, can set the rotating speed of motor as needed, to adjust
Linear stage is saved relative to the sliding speed of pedestal, the sliding speed of linear stage is mutually fitted with the mark speed of laser beam
Should.
For example, laser mark printing device also includes measuring instrument, on slide, the measuring instrument is used to measure the measuring instrument
The distance between laser light mechanism and the test point of mark unit of product, to obtain range data corresponding to test point.Measuring instrument
Communicated to connect with controller, the range data that controller measures according to measuring instrument is handled, to obtain the compensation of mark depth
Value.And for example, the measuring instrument is infrared survey instrument, makes measuring instrument by infrared principles to laser light mechanism and the mark unit of product
The distance between test point, simple and fast.
For example, laser generator includes housing and movement, cavity, air intake duct and air-out groove, chamber are offered on the housing
Body connects with air intake duct and air-out groove respectively, and movement is within the cavity and is connected with the housing.Air outside housing is by entering
Heat exchange is carried out with caused heat on movement in wind groove, the air of heat exchange is discharged by air-out groove, realizes the radiating of movement,
Solves the problems of excessive heat of laser generator.And for example, the number of air intake duct and air-out groove is multiple to make the radiating effect of movement
More preferably.And for example, the bearing of trend of multiple air intake ducts is parallel to each other, and the bearing of trend of multiple air-out grooves is parallel to each other, and each air intake
The bearing of trend of the bearing of trend of groove and each air-out groove is mutually perpendicular to, and makes the difficulty of processing of multiple air intake ducts and air-out groove relatively low,
Reduce the manufacturing cost of laser mark printing device.In order to preferably solve the problems of excessive heat of laser generator, for example, laser occurs
Device also includes radiator fan, and the radiator fan is in the cavity.The exhaust vent connected with cavity is further opened with housing,
The exhaust vent is corresponding with exhaust vent adjacent to the air-out groove, the radiator fan.When radiator fan works, radiator fan
Air in cavity is extracted out from exhaust vent, neighbouring exhaust vent side in cavity is produced negative pressure of vacuum, so that adjacent in cavity
The air flow of nearly air intake duct is realized that the air in cavity quickly circulates, carried out with producing heat on movement to exhaust vent side
Quick heat exchange, improve the radiating efficiency of laser generator.And for example, laser generator also includes the first deflector and the second water conservancy diversion
Plate, the first deflector and the second deflector are respectively positioned in cavity.First deflector is used to guide the air at air inlet duct to machine
At core, bypass air through the first deflector and quickly flow at movement；Second deflector be used for by the air on movement guide to
At radiator fan, bypass air through the second deflector and quickly flow at radiator fan, avoid air from being sent out in stimulated light in cavity
The interference effect of other parts of raw device, improve the radiating efficiency of laser generator.For example, laser generator also includes filtering
Core, filtration core is within the cavity and adjacent to air intake duct, the dust that filtration core was used in air filtering, avoids dust from entering in cavity
The performance of movement is influenceed, so as to extend the service life of laser generator.And for example, filtration core is fixed on cavity by screw
On inwall, moved to prevent filtration core relative to housing, filtration core is preferably positioned on housing.It is appreciated that in other realities
Apply in example, filtration core can also be configured by other means.For example, laser generator also includes pulling component, on housing
The mounting groove connected with cavity is offered, pulling component is located in mounting groove to be slidably connected with housing, and filtration core is located at pull group
On part, when the laying dust on filtration core need to be cleared up, pull out pulling component and simultaneously take out filtration core, realize the fast of dust on filtration core
Speed cleaning.And for example, pulling component includes support bracket and handle, and support bracket is located in mounting groove and is slidably connected with housing, support
The holding tank for accommodating filtration core is offered on frame, for handle on support bracket, operator can pull support bracket phase by shaking hands
Slided for housing, quickly pull out support bracket.For example, pulling component also includes guide rail and sliding block, guide rail is fixed on housing, sliding
Block is slidably connected on guide rail and is connected with support bracket, support bracket is slidably connected on housing.For example, pulling component also includes
From lock set, include sliding part and elastic component from lock set, the cunning chamber connected with cavity is offered on housing, sliding part is positioned at cunning
Intracavitary is simultaneously slidably connected with housing.Elastic component is located at sliding intracavitary, and inwall of the both ends of elasticity respectively with sliding part and sliding chamber connects
Connect.Catching groove is offered on sliding part.Support bracket is provided with boss, and boss is caught in catching groove, support bracket is lock onto on housing.When
When need to pull out support bracket, sliding part is pressed, elastic component compressed, and boss slips away catching groove, support bracket is slided relative to housing.When
When support bracket is pressed into holding tank, support bracket is pressed, boss slides with support bracket relative to housing, until boss buckles into catching groove
It is interior, support bracket is reliably connected on housing, in case support bracket is opened accidentally.And for example, the wedge shaped shape of boss, boss cunning is reduced
From the resistance of catching groove.And for example, elastic component is welded on the inwall of chute, elastic component is connected with housing.
For example, ventilating water pipe is offered on movement.Laser generator also includes cooling water tank, water pump, water inlet pipe and water outlet
Pipe, cooling water tank savings cooling water.One end of water inlet pipe connects with cooling water tank, and the other end connects with ventilating water pipe；Water pump is set
In on water inlet pipe, water pump is used to the cooling water in cooling water tank being pumped into ventilating water pipe, makes caused by cooling water and movement
Heat carries out heat exchange, so that the heat on movement quickly scatters and disappears.One end of outlet pipe connects with ventilating water pipe, the other end with
Cooling water tank connects.Cooling water after heat exchange turns into recycle-water, recycle-water by outlet pipe flow back to cooling water tank carry out it is cold
But, the recycle-water after cooling is changed into cooling water and is continuing with, and realizes circulating for cooling water.And for example, in cooling water tank
Formed with heat dissipation cavity, connecting pipe, savings chamber and valve body, heat dissipation cavity is connected with savings chamber by connecting pipe, and heat dissipation cavity with
Outlet pipe connects, and connecting pipe is provided with valve body, and valve body is used to switch connecting pipe.The outer wall of cooling water tank is provided with multiple dissipate
Hot fin, the recycle-water in heat dissipation cavity is set to be radiated by radiating fin, so that recycle-water is changed into cooling water.Communicating pipe
Heat insulation layer is equipped with road and the inwall of savings chamber, the temperature for the cooling water for making to flow in savings chamber by connecting pipe keeps permanent
It is fixed.And for example, multiple radiating fins are welded on the outer wall of cooling water tank, make the structure of laser generator more compact.
And for example, connecting pipe is provided with temperature measurer, and temperature measurer is used for the temperature for measuring the recycle-water in connecting pipe, works as survey
When Wen Yi show value is less than predetermined value, valve body is opened, and the recycle-water in heat dissipation cavity is flow to by connecting pipe in savings chamber.
And for example, valve body is magnetic valve, the control terminal communication connection of temperature measurer and valve body, valve body is opened with the numerical values recited of temperature measurer
Close.And for example, laser generator also includes cooling fan, and cooling fan is oppositely arranged with radiating fin, and cooling fan is to heat radiating fin
Piece is radiated, and makes the heat Quick diffusing on radiating fin, improves the radiating efficiency of laser generator.And for example, radiating fin
Material be copper or aluminium, make the radiating efficiency of radiating fin higher.For example, the outer wall of radiating fin shape in curved surface, makes heat radiating fin
The contact area of piece and air is larger, so that the radiating effect of radiating fin is preferable.And for example, each radiating fin and cooling water tank
Between angle be 30 °~60 °, enable the heat Quick diffusing on radiating fin into air.In the present embodiment, it is each to dissipate
Angle between hot fin and cooling water tank is 45 °, makes the radiating effect of radiating fin preferable.And for example, opened on each radiating fin
Provided with multiple grooves, make the contact area of radiating fin and air larger, make the radiating effect of radiating fin preferable.It is for example, more
Individual groove is spaced apart along radiating fin, makes the radiating rate of each position of radiating fin more balanced.And for example, the horizontal stroke of groove
Section triangular shape or trapezoidal shape, make that the contact area of radiating fin and air is bigger, and radiating effect is more preferable.For example, radiating
Multiple passages are further opened with fin, each passage, which corresponds, connects each groove, makes the contact surface of air and radiating fin
Product is larger, and radiating effect is preferable.
Product, is positioned on linear stage, makes product by above-mentioned laser mark printing device and product marking method first
Moved with linear stage；Then along the moving direction of linear stage and perpendicular to the direction of the moving direction by product
Mark region division is multiple mark units, and the number size of mark unit can be divided according to the size in mark region；Then
The displacement of the lines data of linear stage are gathered, to obtain the displacement data of linear stage；Then to each mark unit
The laser generator of laser mark printing device is measured respectively the distance between with multiple test points of mark unit, obtains multiple distances
Data；Then the actual mark depth of mark unit is obtained according to multiple range data；Then by actual mark depth and mark
The theoretical mark depth of unit is compared, and obtains the offset of the mark depth of mark unit, i.e., to actual mark depth with
The theoretical mark depth of mark unit does difference operation；Then according to offset adjust laser generator power output, make by
The focal position of laser beam after light path system is adapted with mark region, laser beam is carried out reliably mark to product, from
And make the mark effect of laser mark printing device preferable.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. product marking method, it is characterised in that including：The product is positioned on linear stage, the product is moved with the linear stage；Along the moving direction of the linear stage and perpendicular to the direction of the moving direction by the mark region of the product It is divided into multiple mark units；Gather the displacement of the lines data of the linear stage；Laser generator multiple surveys with the mark unit respectively to each mark unit measurement laser mark printing device The distance between pilot, obtain multiple range data；The actual mark depth of the mark unit is obtained according to multiple range data；By the actual mark depth compared with the theoretical mark depth of the mark unit, the mark unit is obtained The offset of mark depth；AndThe power output of the laser generator is adjusted according to the offset.
- 2. product marking method according to claim 1, it is characterised in that multiple test points are along the mark unit Mark direction be spaced apart.
- 3. product marking method according to claim 2, it is characterised in that the line of multiple test points is in broken line Shape.
- 4. product marking method according to claim 1, it is characterised in that the laser is adjusted according to the offset and sent out The power output of raw device, also includes step before：The offset of the mark depth of multiple mark units is fitted, obtains the mark depth in the region up to standard Offset curve, wherein the offset curve corresponds with the displacement data；The offset of the laser generator is obtained according to the offset curve and the displacement of the lines data.
- 5. product marking method according to claim 4, it is characterised in that by the mark depth of multiple mark units The step of offset is fitted includes：Denoising is carried out to the compensation Value Data of the mark depth of multiple mark units；Compensation Value Data after denoising is fitted, obtains the offset curve.
- 6. product marking method according to claim 5, it is characterised in that using least square method by the offset after denoising Data are fitted.
- 7. product marking method according to claim 5, it is characterised in that beaten according to obtaining multiple range data The step of actual mark depth for marking unit, includes：Multiple range data are subjected to denoising；Range data after denoising is averaged, obtains the actual mark depth of the mark unit.
- 8. product marking method according to claim 1, it is characterised in that the linear work is gathered by displacement transducer The displacement of the lines data of platform.
- 9. product marking method according to claim 1, it is characterised in that along the moving direction of the linear stage by institute The mark region division for stating product is multiple mark units, also includes step before：The product is fixed on the linear stage.
- 10. a kind of laser mark printing device, it is characterised in that using the product marking method any one of claim 1 to 9 Carry out mark.
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Application publication date: 20180109 |