CN107234345A - A kind of laser cutting system and its cutting method - Google Patents
A kind of laser cutting system and its cutting method Download PDFInfo
- Publication number
- CN107234345A CN107234345A CN201710576489.0A CN201710576489A CN107234345A CN 107234345 A CN107234345 A CN 107234345A CN 201710576489 A CN201710576489 A CN 201710576489A CN 107234345 A CN107234345 A CN 107234345A
- Authority
- CN
- China
- Prior art keywords
- laser
- cutting
- coat
- cut
- transition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B23K26/38—Removing material by boring or cutting
-
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention provides a kind of laser cutting system and its laser cutting method, and it includes：Galvanometer system, variable mirror, stationary mirror, first laser device, second laser and control system, wherein, control system is connected with first laser device, second laser and variable mirror.The cutting mode that the present invention is used cuts for prefocusing mode, the rear focusing cutting mode that existing pole piece cutting is used, prefocusing is focused on compared to rear, and focal beam spot is smaller, and laser power density is bigger at hot spot, cutting speed can be improved, coordinate three axle galvanometers, cut coverage is big, large format cutting can be carried out and small breadth batch is cut, cutting efficiency is improved, it is cost-effective.
Description
Technical field
The invention belongs to technical field of laser processing, more particularly to a kind of laser cutting system and its cutting method.
Background technology
With the variation of consumer market demand, new energy industry is more and more wellr sold and in short supply.Lithium battery has high-energy because of it, close
The advantages of spending big, power output height, service life cycle length, non-environmental-pollution, is widely used in automobile, mobile communication equipment
With the industry such as portable electric appts.In Production Process of Lithium Battery, battery pole piece cutting is one of extremely important process, only
Have after coiled battery pole piece cutting, can just be shaped with membrane winding, make battery core.
The just extremely aluminium foil of the battery pole piece of the current widely used lithium ion of industrial market, its negative pole is copper foil.Positive pole
Aluminum foil thickness mostly at 20 μm or so, the copper thickness of negative pole is at 12 μm or so, and aluminium foil and copper foil two sides respectively have 100 μm or so
Coat.The traditional processing mode of battery pole piece is that, using conventional processing equipments such as die-cutting machine, banding machines, this traditional adds
Work mode has abrasion, it is necessary to regularly replace cutting die to equipment in process, and processing cost is higher, meanwhile, battery pole piece
Occur that crimping, cut surface are unsmooth, it is jagged to wait product defects.The pole piece of nanosecond optical fiber laser is occurred in that currently on the market
Cutting equipment, solves the problems, such as the said goods part mass, because Laser Processing is noncontact processing, greatly reduces equipment consumption
The cost of material, improves processing efficiency, is progressively accepted by battery production manufacturer.
Existing cutting method：Pole piece of power battery is that LiFePO4 or the sour iron lithium material of cobalt are coated uniformly on copper foil and (born
Pole) and aluminium foil (positive pole) both sides, pole piece is then cut into by specific shape by cutting equipment.At present, some domestic lifes
Production enterprise uses banding machine, cross cutting, punching and rolling cut equipment mostly.When cutting battery pole piece using these equipment, cut out
The pole piece burr come is relatively more, and trimming dry linting is serious, and dust is more, greatly affected the application of battery pole piece.In addition, these
Cutting die in cutting equipment needs frequent replacing, is unfavorable for large-scale continuous production, while also increasing the dimension in equipment later stage
Cost is protected, this shortcoming seriously limits the production and application of battery pole piece, extends quick usage cycles, increase and be produced into
This, causes to waste, needs a kind of new cutting equipment badly to substitute it.
Optical fiber laser have close to the beam quality of diffraction limit, high-energy conversion efficiency, high stability, almost exempt from dimension
Shield, the shelf life of overlength and the advantages of small volume, have been widely used for being cut by laser, weld and the industry manufacture such as mark
Field.Fiber laser device is using optical fiber as transmitting medium, and laser exports laser after collimating, expanding and focus on,
Spot diameter is focused on into dozens of micron even several microns, fine cut is well suited for.Fiber laser device can be used
Contactless cutting mode, joint-cutting is narrow, heat affected area is small, trimming is smooth and cutting speed fast, and its plurality of advantages can expire just
The fly-cutting of sufficient battery pole piece and increased quality, are tradition cross cutting and the preferable alternate device of rolling cut equipment.
But because pole piece is made of composite, generally we are called ' sandwich ' material, nanosecond optical-fiber laser cutting
Belong to hot-working, the electrode layer meeting in the middle of the phenomenon that coat shrinks, cut portion occurs with nanosecond optical-fiber laser cutting pole piece
There is exposed phenomenon.As electrokinetic cell capacity is increasing, to battery pole piece requirement also more and more higher, such product defects meeting
Potential safety hazard is brought to product, burr easily pierces through barrier film with dust, or punctures barrier film in charge and discharge, causes in battery
Portion's short circuit, heating produce the problems such as high temperature even explodes.
The content of the invention
Battery pole piece is solved it is an object of the invention to provide one kind and occurs that crimping, tangent plane are unsmooth, and burr is relatively more, carry
The laser cutting system and its cutting method of high processing efficiency.
The present invention provides a kind of laser cutting system, and it includes：Galvanometer system, variable mirror, stationary mirror, first
Laser, second laser and control system, wherein, control system with first laser device, second laser and variable anti-
Penetrate mirror connection.
The present invention also provides a kind of laser cutting method, and the cutting zone of workpiece includes：Exposed area, coat, connection are left
Second transition region of exposed area and coat on the right side of the exposed area of side and the First Transition area of coat and connection；Wherein,
First Transition area and the second transition region are including the connection arc section with coat and the straightway being connected with exposed area；
Comprise the following steps：
The first step：First laser device and the cutting pattern track of second laser are set in control system respectively and cutting is joined
Number；
Second step：Control system sends signal in advance so that variable mirror is in 0 ° of position of level；Control system is controlled
First laser device sends laser, and laser is cut through galvanometer system to the coat of workpiece；
3rd step：First laser device is cut by laser to coat；After cutting terminates, control system sends letter in advance
Number cause variable mirror be in 45 ° of positions of level；
4th step：Control system control second laser sends laser, and laser is anti-through stationary mirror and variable mirror
The arc section in the First Transition area being incident upon after galvanometer system to workpiece and coat junction are laser switch starting point, second laser
Device is cut to First Transition area using circular arc；
5th step：After the completion of second laser cutting First Transition area；Second laser redirects cutting and First Transition
The connected exposed area in area, second laser is cut by laser to exposed area；
6th step：After the completion of second laser cutting exposed area；Second laser jumps to second be connected with exposed area
The straightway of transition region is as laser starting point, and the arc section that the second transition region joins with coat is as laser light off position, extremely
This completes the laser cutting to battery pole piece.
The present invention also provides a kind of laser cutting method, and the cutting zone of workpiece includes：Exposed area, coat, connection are left
Second transition region of exposed area and coat on the right side of the exposed area of side and the First Transition area of coat and connection；Wherein,
First Transition area and the second transition region are including the connection arc section with coat and the straightway being connected with exposed area；
Comprise the following steps：
The first step：First laser device and the cutting pattern track of second laser are set in control system respectively and cutting is joined
Number；
Second step：Control system sends signal in advance so that variable mirror is in 0 ° of position of level；Control system is controlled
First laser device sends laser, and laser is cut through galvanometer system to the coat of workpiece；
3rd step：First laser device is cut by laser to coat；After cutting terminates, control system sends letter in advance
Number cause variable mirror be in 45 ° of positions of level；
4th step：Control system control second laser sends laser, and laser is anti-through stationary mirror and variable mirror
The arc section for the second transition region being incident upon after galvanometer system to workpiece and coat junction are laser switch starting point, second laser
Device is cut to the second transition region using circular arc；
5th step：After the completion of second laser cuts the second transition region；Second laser redirects cutting and the second transition
The connected exposed area in area, second laser is cut by laser to exposed area；
6th step：After the completion of second laser cutting exposed area；Second laser jumps to first be connected with exposed area
The straightway of transition region is as laser starting point, and the arc section that First Transition area joins with coat is as laser light off position, extremely
This completes the laser cutting to battery pole piece.
The cutting mode that the present invention is used cuts for prefocusing mode, the rear focusing cutting that existing pole piece cutting is used
Mode, prefocusing is focused on compared to rear, and focal beam spot is smaller, and laser power density is bigger at hot spot, it is possible to increase cutting speed,
Coordinate three axle galvanometers, cut coverage is big, large format cutting can be carried out and small breadth batch is cut, cutting efficiency is improved, save into
This.
Brief description of the drawings
Fig. 1 is the structural representation of laser cutting system of the present invention；
Fig. 2 cuts the schematic diagram of workpiece for the present invention；
Fig. 3 is outline cutting track figure of the present invention；
Fig. 4 is the combination diagram of the cutting track of outline shown in this Fig. 3.
Embodiment
Fig. 1 and Fig. 2 show the structural representation of laser cutting system of the present invention, and this laser cutting system is used for workpiece
2 are cut by laser.
In the present embodiment, workpiece 2 is battery pole piece, and battery pole piece has three kinds of situations：There is painting on the two sides of battery pole piece
Coating, the one side of battery pole piece have coat, only battery pole piece not to have coat.The cutting technique and cutting ginseng of each case
Number can be different.
As shown in Fig. 2 workpiece 2 includes exposed area 21 and the coat 22 being connected with exposed area 21.
Exposed area 21 is the lug position of battery pole piece, is direct exposed copper foil or aluminium foil；Coat 22 is Fig. 2
Shown shadow region.
This laser cutting system includes：Galvanometer system 1, variable mirror 3, stationary mirror 4, first laser device 5, second
Laser 6 and control system 7, wherein, first laser device 5 is 200W nanosecond lasers, and second laser 6 swashs for 50W psecs
Light device, control system 7 is connected with first laser device 5, second laser 6 and variable mirror 3.
Wherein, galvanometer system 1 includes X galvanometers, Y galvanometers, scan module and optical reflecting lens, is driven using scan module
Optical mirror slip carries out gauche form motion, and the track that laser is specified according to control software carries out positional dissection.Speculum 3 is variable
Speculum, variable mirror 3 has 0 ° and 45 ° of two positions, and the deflection angle of the speculum 3 is controlled by control system 7.When
Control system 7 give first laser 5 optical signals of device when, send signal in advance so that variable mirror be in 0 ° of position of level, with
Just the light extraction of first laser device 5, the light that first laser device 5 is sent to galvanometer system 1, X galvanometers and Y galvanometers through galvanometer system 1
Workpiece 2 is cut by laser afterwards.When control system is to 6 optical signals of second laser, signal is sent in advance so that variable
Speculum is in 45 ° of positions of level, and so as to the light extraction of second laser 6, the light that second laser 6 is sent is through variable mirror 3
To galvanometer system 1, workpiece 2 is cut by laser after X galvanometers and Y galvanometers through galvanometer system 1.
Stationary mirror 4 is fixes 45 ° of speculums, and the stationary mirror 4 is for swashing that reflected second laser device 6 is sent
Light, is combined with variable mirror 3 so that the laser that sends of first laser device 5 and second laser 6 is in same light path, to protect
Card is applied on workpiece in same position.
Because battery pole piece 2 has with coat and without the situation of coat, in nanosecond optical fiber laser cutting technique, receive
Second optical-fiber laser cutting category hot-working, with meeting during the battery pole piece of traditional nanosecond optical fiber laser cutting technique cutting belt coat
There is the electrode layer in the middle of the phenomenon that coat shrinks, cut portion and have exposed phenomenon, such product defects can give product
Bring potential safety hazard.So obtaining relatively good cutting effect by optimizing nanosecond laser technological parameter.In addition, with first
Laser 5 cut without coat pole piece (such as：Lug), laser is acted directly in the ear of battery pole piece, can be easy to
Cause crimping, cut surface unsmooth, it is jagged to wait product defects.Because the ear of battery pole piece is copper foil or aluminium foil, without phosphorus
The sour iron lithium coat of sour iron lithium or cobalt, is mainly used in battery charging and discharging, relative to the part for having coat, ear is to laser
Absorptivity can be lower.So the lug position of battery pole piece is cut in selection with second laser 6.
Second laser 6 is picosecond laser, in the pole piece without coat such as cutting lug, individually cutting, then match somebody with somebody
The pole piece and rational technological parameter of the cutting belt coat of first laser device 5 are closed, cutting effect is improved well, otch is whole
Together, basic impulse- free robustness and edge-curl phenomenon.
Control system 7 is used for control system and is used for controlling the switch light of first laser device 5 and second laser 6 and variable anti-
Penetrate the position of mirror 3.
Fig. 3 show the path schematic diagram of laser cut workpieces, and cutting zone includes：Exposed area 21, coat 22, connection
The exposed area 21 in left side and the First Transition area 23 of coat 22 and connection on the right side of exposed area 21 and coat 22 second
Transition region 24.Wherein, the transition region 24 of First Transition area 23 and second include with the connection arc section of coat 22 and with
The straightway that exposed area 21 is connected, arc section and the connection of corresponding straightway.
Because lug position (exposed area 21) and the cutting parameter of coat 22 are different, as shown in figure 4, whole figure
Four parts are divide into, are cut with different parameters：Exposed area 21 as a sections, First Transition area 23 as b1 sections,
Two transition regions 24 are used as c sections as b2 sections, coat 22.
The b1 sections in setting First Transition area 23 are arranged on the left side of coat 22, and the b2 sections of the second transition region 24 are arranged on painting
The right side of coating 22.
Cutting sequence is：c-b1-a-b2：First c sections are cut with nanosecond laser 5：Being laser starting point since c sections of left sides
Exemplified by light extraction, then to c sections right side extended lines at be laser light off point；Jump to again and right side c sections of laser light off point extended line
On the b1 elongated segment lines of junction, b1 sections of junction circular arc extended lines are laser switch starting point, are cut with picosecond laser 6
Cut.B1 sections are cut, a sections that cutting is connected with b1 straight lines are redirected, a sections of laser cutting terminates, then jumps to the b2 sections being attached thereto
As laser starting point at straight line, b2 sections of circular arc junction extended lines are laser light off position, and so far whole figure cutting is finished.This
It is complete pole piece laser cutting order.
Conversely, being opened the light from c sections of right sides for laser, starting point is also possible, i.e., cutting sequence is：c-b2-a-b1：.For a,
Tetra- positions of b1, b2, c, are cut with different laser and cutting parameter.
The present invention also provides a kind of laser cutting method, when exposed area 21 is copper foil, comprises the following steps：
The first step：The cutting pattern track of first laser device 5 and second laser 6 is set in control system 7 respectively and is cut
Cut parameter；
Second step：Control system 7 sends signal in advance so that variable mirror 3 is in 0 ° of position of level；Control system 7 is controlled
First laser device 5 processed sends laser, and laser is cut through galvanometer system 1 to the coat 22 of workpiece；
Laser is to the specific cutting sequence of coat 22：Start light extraction by laser starting point of the left side of coat 22 first,
Then it is laser light off point to arrive at the right side extended line of coat 22, completes the laser cutting to coat 22.
3rd step：First laser device 5 is cut by laser to coat 22；After cutting terminates, control system 7 is sent out in advance
Go out signal so that variable mirror 3 is in 45 ° of positions of level；
4th step：The control second laser 6 of control system 7 sends laser, and laser is through stationary mirror 4 and variable mirror
3 to reflex to the arc section in the First Transition area 23 to workpiece and the junction of coat 22 after galvanometer system 1 be laser switch starting point,
Second laser 6 is cut to First Transition area 23 using circular arc；
Laser is to the specific cutting sequence in First Transition area 23：Second laser 6 jumps to sharp with the right side of coat 22
Light closes the junction of luminous point extended line and the extended line of First Transition area 23, the arc section in First Transition area 23 and prolonging for coat 22
Long line junction is cut by laser as laser switch starting point, second laser 6 to First Transition area 23.
5th step：After the completion of the cutting First Transition of second laser 6 area 23；Second laser 6 redirects cutting and first
The connected exposed area 21 of transition region 23, second laser 6 is cut by laser to exposed area 21；
6th step：After the completion of the cutting of second laser 6 exposed area 21；Second laser 6 is jumped to be connected with exposed area 21
The second transition region 24 straightway as laser starting point, the arc section that the second transition region 24 joins with coat 22 is used as laser
Optical position is closed, the laser cutting to battery pole piece is so far completed.
The present invention also provides a kind of laser cutting method, when exposed area 21 is copper foil, comprises the following steps：
The first step：The cutting pattern track of first laser device 5 and second laser 6 is set in control system 7 respectively and is cut
Cut parameter；
Second step：Control system 7 sends signal in advance so that variable mirror 3 is in 0 ° of position of level；Control system 7 is controlled
First laser device 5 processed sends laser, and laser is cut through galvanometer system 1 to the coat 22 of workpiece；
Laser is to the specific cutting sequence of coat 22：Start light extraction by laser starting point of the right side of coat 22 first,
Then it is laser light off point to arrive at the left side extended line of coat 22, completes the laser cutting to coat 22.
3rd step：First laser device 5 is cut by laser to coat 22；Control system 7 is sent out in advance after cutting terminates
Go out signal so that variable mirror 3 is in 45 ° of positions of level；
4th step：The control second laser 6 of control system 7 sends laser, and laser is through stationary mirror 4 and variable mirror
3 to reflex to the arc section of the second transition region 24 to workpiece and the junction of coat 22 after galvanometer system 1 be laser switch starting point,
6 pair of second transition region 24 of second laser is cut using circular arc；
Laser is to the specific cutting sequence of the second transition region 24：Second laser 6 jumps to sharp with the left side of coat 22
Light closes the junction of luminous point extended line and the extended line of the second transition region 24, the second arc section of transition region 24 and prolonging for coat 22
Long line junction is cut by laser as laser switch starting point, 6 pair of second transition region 24 of second laser.
5th step：After the completion of second laser 6 cuts the second transition region 24；Second laser 6 redirects cutting and second
The connected exposed area 21 of transition region 24, second laser 6 is cut by laser to exposed area 21；
6th step：After the completion of the cutting of second laser 6 exposed area 21；Second laser 6 is jumped to be connected with exposed area 21
First Transition area 23 straightway as laser starting point, the arc section that First Transition area 23 joins with coat 22 is used as laser
Optical position is closed, the laser cutting to battery pole piece is so far completed.
When exposed area 21 is aluminium foil, it is identical with the cutting method of copper foil, is all to use twin-laser system, cutting drawing
Shape is also the same, the difference is that the difference of cutting parameter, specific as follows shown：
Laser technical parameterses explanation：
Cutting speed：The speed that galvanometer is run during cutting, speed is faster, and laser pulse residence time is shorter, and heat dissipates
Hair is faster, conversely, speed is slower, laser residence action time is longer, and heat build-up is difficult to distribute.
Empty hop rate degree：Laser not light extraction, complete it is empty jump motion when galvanometer operation speed.
Laser Q frequencies：Refer under the pulse laser umber of pulse per second sent, same time, frequency is higher, single pulse energy
Amount is smaller, and the destructive power of laser is also smaller, and now laser is mainly reflected in heat energy.
Pulse width：Refer to individual pulse duration, pulse width is smaller, the laser duration is shorter, its peak work
Rate is higher, and the destructive power of laser is bigger.Conversely, pulse width is bigger, the laser duration is longer, and peak power is lower, laser
It is mainly reflected in heat energy.
Laser power：The power output of laser.
Open the light delay：Laser starting point is moved into the regulating time that starting point is combined, galvanometer system before laser opens the light with galvanometer
In advance or time for delaying.
Guan Guang is delayed：Laser tail point is moved into galvanometer before the regulating time that tail point is combined, laser light off with galvanometer to shift to an earlier date
Or the time delayed.
Turn round and be delayed：In graphics track corner, galvanometer is set to move to the regulating time of curve in place.
Redirect delay：After sky is jumped, galvanometer is set to move to static regulating time in place.
The thickness of the thickness and reflectivity of aluminium foil and copper foil in positive/negative plate, also coat is different.Cutting used
Technological parameter is different.
When exposed area 21 is aluminium foil, the parameter such as table 1 of laser cutting：
When the exposed area of table 1 is aluminium foil, the parameter of laser cutting
When exposed area 21 is copper foil, the parameter such as table 2 of laser cutting：
When the exposed area of table 2 is copper foil, the parameter of laser cutting
The present invention is shorter with the handing-over arc section of coat 22 respectively due to the transition region 24 of First Transition area 23 and second, if
, can be because the delay of switch light, the turn of second laser 6, which are delayed and redirect delay, be caused cutting effect very using right angle cuts
Difference, or even situation about cutting to get off, so right angle is made into circular arc cutting, and extend line of cut, so allow in cutting
When, laser is cut to close light when coat 22 jumps to First Transition area 23 or the second transition region 24 and is jumping to exposed area a little later
Earlier opened the light when 21, and then solve above mentioned problem.
Right angle is made into circular arc cutting by the present invention, and extends line of cut, and it is due to that extension line of cut causes to be intended to explanation
The light extraction track (i.e. cutting pattern) of laser is able to extend or shortened, and the morning and evening of switch light is by extending or shortening cutting pattern
Extended line at delivery position obtains come what is obtained without being delayed merely by laser switch light；Because if simply by
The delay of laser switch light is come if controlling laser switch light, and parameter regulation is got up cumbersome cuts, it is necessary to make repeated attempts to match
Cut figure and other cutting parameters.And if somewhat changed from figure, it is possible to the adjustment in many parameters is reduced, from
And reduce technological parameter debugging difficulty.
The adjustment of figure of the present invention is exactly " right angle cuts are changed to circular arc cutting, and extend line of cut ", here it is applying
Coating 22 and the position of the transition region 24 of First Transition area 23 and second handing-over, two parts can extend one section, coat in fact
Layer 22 and the junction of exposed area 21 are also to have extended line, and simply figure is overlapped, without coat 22 and First Transition area 23 and the
It is directly perceived that the handing-over handing-over of two transition regions 24 is seen.Because so extending the part, laser will be than not prolonging if extension line of cut
Long many light extractions are a bit of, this be equivalent to laser earlier light extraction, close light a little later.C sections are cut, when jumping to b sections, junction b
Section circular arc extended line also extends a part, and the position of Laser output, has more when this is from coat 22 to First Transition area 23
One section is just comparable to laser light extraction in advance.So processing is it is ensured that be not in due to the difference of cutting parameter between each section
And cause pole piece to cut the phenomenon do not fallen.And the laser in parameter open the light delay and close light delay be for debug different materials cutting
When cutting effect, and laser cutting speed, Q frequencies etc. match, so that the cutting effect got well.
So when cutting aluminium foil and copper foil, otherwise varied, the exposed area and first when cutting aluminium foil of laser switch light delay used
The switch light delay of the transition region 24 of transition region 23 and second is all 0, because the result matched with other cutting parameters, is not
Say that this part is not opened the light and postpones to close light in advance when cutting aluminium foil, but realized by extended line and open the light and postpone pass light in advance.
On the length of extended line, required for this elongated segment line of cutting being drawn according to extension line length and cutting speed
Time t, this time t is greater than the time of laser switch light delay, but can not be long, can influence cutting efficiency.
It is exactly, the delay of laser switch light to be for ensuring that cutting cutting effect, and laser cutting speed, Q in brief
Frequency etc. matches, so that the cutting effect got well.And extend the line of cut of each junction, to be obtained to ensure
Pole piece can completely be cut down.If not extending line of cut, in different sections of junction switched laser devices and parameter, due to
The latency issue of laser, it may appear that the phenomenon that pole piece can not be cut away completely occurs.
The cutting mode that the present invention is used is cut (i.e. for prefocusing mode：Condenser lens is arranged on before galvanometer system, is gathered
Focus lens are placed in beam expanding lens and galvanometer system centre position, and such cutting mode laser completes to focus on when not by galvanometer,
Light extraction track is then controlled by galvanometer system again, the sphere of action of large format can be obtained), used with the cutting of existing pole piece
Rear focusing cutting mode (i.e.：Condenser lens is arranged on after scanning galvanometer, and laser is applied directly to after by condenser lens
On workpiece), prefocusing is focused on compared to rear, and focal beam spot is smaller, and laser power density is bigger at hot spot, it is possible to increase cutting speed
Degree, coordinates three axle galvanometers, and cut coverage is big, can carry out large format cutting and small breadth batch is cut, improve cutting efficiency, save
Cost.
The present invention is cut according to the situation of battery pole piece coat using nanosecond+psec twin-laser same light path, and is cut
The mode of cutting uses prefocusing mode and cut.Prefocusing is compared to existing rear focusing cutting mode, and focal beam spot is smaller, light
Laser power density is bigger at spot, it is possible to increase cutting speed, coordinates three axle galvanometers, and cut coverage is big, can carry out large format and cut
Cut and cut with small breadth batch, improve cutting efficiency, it is cost-effective.And picosecond laser solves nanosecond laser in cutting
Without coat pole piece when be easy to phenomenon that defect occur, then coordinate rational technological parameter, cutting improved well
Effect, otch is neat, basic impulse- free robustness and edge-curl phenomenon.
The preferred embodiment of the present invention described in detail above, but the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, can carry out a variety of equivalents to technical scheme, these
Equivalents belong to protection scope of the present invention.
Claims (10)
1. a kind of laser cutting system, it is characterised in that it includes：Galvanometer system, variable mirror, stationary mirror, first
Laser, second laser and control system, wherein, control system with first laser device, second laser and variable anti-
Penetrate mirror connection.
2. laser cutting system according to claim 1, it is characterised in that：The first laser device is nanosecond laser,
Second laser is picosecond laser.
3. laser cutting system according to claim 1, it is characterised in that：The variable mirror has 0 ° and 45 ° two
Individual position；When control system is to first laser device optical signals, signal is sent in advance so that variable mirror is in 0 ° of level
Position, the light that first laser device is sent to galvanometer system, is cut by laser through galvanometer system to workpiece；When control system is given
During second laser optical signals, signal is sent in advance so that variable mirror is in 45 ° of positions of level, second laser is sent
Light through variable mirror to galvanometer system, workpiece is cut by laser through galvanometer system.
4. laser cutting system according to claim 1, it is characterised in that：Stationary mirror is to fix 45 ° of speculums.
5. a kind of laser cutting method, the cutting zone of workpiece includes：Exposed area, coat, the exposed area on the left of connection and painting
Second transition region of exposed area and coat on the right side of the First Transition area of coating and connection；Wherein, First Transition area and
Two transition regions are including the connection arc section with coat and the straightway being connected with exposed area；It is characterised in that it includes
Following steps：
The first step：First laser device and the cutting pattern track of second laser and cutting parameter are set in control system respectively；
Second step：Control system sends signal in advance so that variable mirror is in 0 ° of position of level；Control system control first
Laser sends laser, and laser is cut through galvanometer system to the coat of workpiece；
3rd step：First laser device is cut by laser to coat；After cutting terminates, control system sends signal in advance to be made
Obtain variable mirror and be in 45 ° of positions of level；
4th step：Control system control second laser sends laser, and laser is reflexed to through stationary mirror and variable mirror
It is laser switch starting point, second laser pair to the arc section in the First Transition area of workpiece and coat junction after galvanometer system
Cut using circular arc in First Transition area；
5th step：After the completion of second laser cutting First Transition area；Second laser redirects cutting and First Transition area phase
Exposed area even, second laser is cut by laser to exposed area；
6th step：After the completion of second laser cutting exposed area；Second laser jumps to the second transition being connected with exposed area
The straightway in area is as laser starting point, and the arc section that the second transition region joins with coat is so far complete as laser light off position
The laser cutting of battery pair pole piece.
6. laser cutting method according to claim 5, it is characterised in that：The laser of the second step is specific to coat
Cutting sequence is：Start light extraction by laser starting point of the left side of coat first, then to being at the right side extended line of coat
Laser light off point, completes the laser cutting to coat.
7. laser cutting method according to claim 5, it is characterised in that：Laser is to the specific cutting sequence in First Transition area
For：Second laser jump to the laser light off point extended line on the right side of coat and the junction of First Transition area extended line,
The arc section in First Transition area and the extended line junction of coat are as laser switch starting point, and second laser is to First Transition
Area is cut by laser.
8. a kind of laser cutting method, the cutting zone of workpiece includes：Exposed area, coat, the exposed area on the left of connection and painting
Second transition region of exposed area and coat on the right side of the First Transition area of coating and connection；Wherein, First Transition area and
Two transition regions are including the connection arc section with coat and the straightway being connected with exposed area；It is characterised in that it includes
Following steps：
The first step：First laser device and the cutting pattern track of second laser and cutting parameter are set in control system respectively；
Second step：Control system sends signal in advance so that variable mirror is in 0 ° of position of level；Control system control first
Laser sends laser, and laser is cut through galvanometer system to the coat of workpiece；
3rd step：First laser device is cut by laser to coat；After cutting terminates, control system sends signal in advance to be made
Obtain variable mirror and be in 45 ° of positions of level；
4th step：Control system control second laser sends laser, and laser is reflexed to through stationary mirror and variable mirror
It is laser switch starting point, second laser pair to the arc section of the second transition region of workpiece and coat junction after galvanometer system
Second transition region is cut using circular arc；
5th step：After the completion of second laser cuts the second transition region；Second laser redirects cutting and the second transition region phase
Exposed area even, second laser is cut by laser to exposed area；
6th step：After the completion of second laser cutting exposed area；Second laser jumps to the First Transition being connected with exposed area
The straightway in area is as laser starting point, and the arc section that First Transition area joins with coat is so far complete as laser light off position
The laser cutting of battery pair pole piece.
9. laser cutting method according to claim 8, it is characterised in that：The laser of the second step is specific to coat
Cutting sequence is：Start light extraction by laser starting point of the right side of coat first, then to being at the left side extended line of coat
Laser light off point, completes the laser cutting to coat.
10. laser cutting method according to claim 8, it is characterised in that：Laser specifically cuts suitable to the second transition region
Sequence is：Second laser jumps to the handing-over with laser light off point extended line and the second transition region extended line on the left of coat
Place, the arc section of the second transition region and the extended line junction of coat are as laser switch starting point, and second laser is to second
Transition region is cut by laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576489.0A CN107234345B (en) | 2017-07-14 | 2017-07-14 | A kind of laser cutting system and its cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576489.0A CN107234345B (en) | 2017-07-14 | 2017-07-14 | A kind of laser cutting system and its cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107234345A true CN107234345A (en) | 2017-10-10 |
| CN107234345B CN107234345B (en) | 2019-06-14 |
Family
ID=59991900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710576489.0A Active CN107234345B (en) | 2017-07-14 | 2017-07-14 | A kind of laser cutting system and its cutting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107234345B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931861A (en) * | 2017-11-30 | 2018-04-20 | 大族激光科技产业集团股份有限公司 | Laser cutting machine |
| CN109079343A (en) * | 2018-10-08 | 2018-12-25 | 东莞阿李自动化股份有限公司 | Lug processing method |
| CN109926737A (en) * | 2019-04-12 | 2019-06-25 | 无锡先导智能装备股份有限公司 | Tab forming method |
| CN111098034A (en) * | 2019-12-16 | 2020-05-05 | 大族激光科技产业集团股份有限公司 | Multilayer material product marking device and method |
| CN113798697A (en) * | 2021-09-29 | 2021-12-17 | 大族激光科技产业集团股份有限公司 | Segmented laser cutting method |
| CN114603253A (en) * | 2022-05-11 | 2022-06-10 | 东莞市盛雄激光先进装备股份有限公司 | Multi-galvanometer laser film-making method and system for positive pole piece |
| CN114633035A (en) * | 2022-05-11 | 2022-06-17 | 东莞市盛雄激光先进装备股份有限公司 | Method and system for manufacturing positive pole piece and positive pole piece |
| CN114985910A (en) * | 2022-05-26 | 2022-09-02 | 深圳泰德激光技术股份有限公司 | Laser cutting equipment and control method and control system thereof |
| CN116441746A (en) * | 2023-04-17 | 2023-07-18 | 深圳市星特科技有限公司 | Pole piece high-speed cutting device and method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675020A (en) * | 2002-08-09 | 2005-09-28 | Tdk株式会社 | Laser processing device, processing method, and method of producing circuit substrate using the method |
| CN2772711Y (en) * | 2004-12-28 | 2006-04-19 | 宝山钢铁股份有限公司 | Laser punching notcher |
| CN101355014A (en) * | 2003-04-21 | 2009-01-28 | 株式会社半导体能源研究所 | Beam irradiation apparatus, beam irradiation method, and method for manufacturing a thin film transistor |
| JP2010012486A (en) * | 2008-07-02 | 2010-01-21 | Tokai Ind Sewing Mach Co Ltd | Laser beam machine |
| CN201405164Y (en) * | 2009-04-30 | 2010-02-17 | 苏州德龙激光有限公司 | Novel double optical path green ray millipore processing unit |
| CN104011516A (en) * | 2011-12-27 | 2014-08-27 | 三菱电机株式会社 | Laser output measuring apparatus |
| CN105057886A (en) * | 2015-08-10 | 2015-11-18 | 济南金威刻科技发展有限公司 | Reflecting laser generation device for cutting machine |
| CN204771159U (en) * | 2014-06-23 | 2015-11-18 | 三菱电机株式会社 | Laser machining device |
| CN105499810A (en) * | 2016-01-12 | 2016-04-20 | 深圳市海目星激光科技有限公司 | Laser cutting method and device on cell core pole piece |
| CN105562947A (en) * | 2016-02-19 | 2016-05-11 | 武汉铱科赛科技有限公司 | Drilling system and method through rotary laser beam sets with parallel rotary symmetry axes |
| CN205437496U (en) * | 2015-12-31 | 2016-08-10 | 深圳泰德激光科技有限公司 | Laser marking machine and double lasers thereof |
-
2017
- 2017-07-14 CN CN201710576489.0A patent/CN107234345B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675020A (en) * | 2002-08-09 | 2005-09-28 | Tdk株式会社 | Laser processing device, processing method, and method of producing circuit substrate using the method |
| CN101355014A (en) * | 2003-04-21 | 2009-01-28 | 株式会社半导体能源研究所 | Beam irradiation apparatus, beam irradiation method, and method for manufacturing a thin film transistor |
| CN2772711Y (en) * | 2004-12-28 | 2006-04-19 | 宝山钢铁股份有限公司 | Laser punching notcher |
| JP2010012486A (en) * | 2008-07-02 | 2010-01-21 | Tokai Ind Sewing Mach Co Ltd | Laser beam machine |
| CN201405164Y (en) * | 2009-04-30 | 2010-02-17 | 苏州德龙激光有限公司 | Novel double optical path green ray millipore processing unit |
| CN104011516A (en) * | 2011-12-27 | 2014-08-27 | 三菱电机株式会社 | Laser output measuring apparatus |
| CN204771159U (en) * | 2014-06-23 | 2015-11-18 | 三菱电机株式会社 | Laser machining device |
| CN105057886A (en) * | 2015-08-10 | 2015-11-18 | 济南金威刻科技发展有限公司 | Reflecting laser generation device for cutting machine |
| CN205437496U (en) * | 2015-12-31 | 2016-08-10 | 深圳泰德激光科技有限公司 | Laser marking machine and double lasers thereof |
| CN105499810A (en) * | 2016-01-12 | 2016-04-20 | 深圳市海目星激光科技有限公司 | Laser cutting method and device on cell core pole piece |
| CN105562947A (en) * | 2016-02-19 | 2016-05-11 | 武汉铱科赛科技有限公司 | Drilling system and method through rotary laser beam sets with parallel rotary symmetry axes |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931861A (en) * | 2017-11-30 | 2018-04-20 | 大族激光科技产业集团股份有限公司 | Laser cutting machine |
| CN109079343A (en) * | 2018-10-08 | 2018-12-25 | 东莞阿李自动化股份有限公司 | Lug processing method |
| CN109926737A (en) * | 2019-04-12 | 2019-06-25 | 无锡先导智能装备股份有限公司 | Tab forming method |
| CN111098034A (en) * | 2019-12-16 | 2020-05-05 | 大族激光科技产业集团股份有限公司 | Multilayer material product marking device and method |
| CN113798697A (en) * | 2021-09-29 | 2021-12-17 | 大族激光科技产业集团股份有限公司 | Segmented laser cutting method |
| CN113798697B (en) * | 2021-09-29 | 2024-07-19 | 深圳市大族贝瑞装备有限公司 | Segmented laser cutting method |
| CN114633035A (en) * | 2022-05-11 | 2022-06-17 | 东莞市盛雄激光先进装备股份有限公司 | Method and system for manufacturing positive pole piece and positive pole piece |
| CN114603253B (en) * | 2022-05-11 | 2022-08-23 | 东莞市盛雄激光先进装备股份有限公司 | Multi-galvanometer laser film-making method and system for positive pole piece |
| CN114603253A (en) * | 2022-05-11 | 2022-06-10 | 东莞市盛雄激光先进装备股份有限公司 | Multi-galvanometer laser film-making method and system for positive pole piece |
| CN114985910A (en) * | 2022-05-26 | 2022-09-02 | 深圳泰德激光技术股份有限公司 | Laser cutting equipment and control method and control system thereof |
| CN114985910B (en) * | 2022-05-26 | 2024-02-06 | 深圳泰德激光技术股份有限公司 | Laser cutting equipment, control method and control system thereof |
| CN116441746A (en) * | 2023-04-17 | 2023-07-18 | 深圳市星特科技有限公司 | Pole piece high-speed cutting device and method |
| CN116441746B (en) * | 2023-04-17 | 2024-07-30 | 深圳市星特科技有限公司 | Pole piece high-speed cutting device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107234345B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107234345A (en) | A kind of laser cutting system and its cutting method | |
| CN110087817B (en) | Laser processing apparatus and method | |
| EP2716398B1 (en) | Laser processing apparatus comprising an optical system | |
| CN104646835B (en) | The laser cutting method of a kind of fexible film magnet and system | |
| CN103962734B (en) | Laser cutting fast zoom method for punching | |
| CN107214420A (en) | Method and device for processing wafer by laser | |
| CN102380709B (en) | Flattened Gaussian beam picopulse laser processing system | |
| CN103495803B (en) | A kind of method for laser welding realizing oval solder joint | |
| CN110977152A (en) | SLM double-laser combined machining system | |
| EP4299235A1 (en) | Laser notching apparatus | |
| EP3488961A1 (en) | Multiple laser processing for biosensor test strips | |
| CN109079343A (en) | Lug processing method | |
| CN109352184A (en) | The beam splitting laser cutting method of silicon-based wafer | |
| US20230111969A1 (en) | Laser cutting method and laser cutting apparatus | |
| CN109926719A (en) | The welding method and device of a kind of copper and Cu alloy material | |
| CN111347172A (en) | Laser cutting method and system for terminal short circuit ring of liquid crystal display device | |
| CN101013200A (en) | Laser precision finishing optical system | |
| CN107252981B (en) | Method and device for processing wafer by laser | |
| CN211564832U (en) | SLM double-laser composite processing device | |
| CN109759728A (en) | A method of improving cell morphology using protective layer is increased | |
| CN203630445U (en) | Laser shaping device | |
| CN203541861U (en) | Laser electric arc hybrid welding coaxial wire feeding processing device | |
| CN202651611U (en) | Semiconductor pumped all-solid-state laser marking machine | |
| CN107511596A (en) | The laser machining device and method of multilayer material | |
| CN203509347U (en) | Laser dotting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |