CN107335911A - Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method - Google Patents
Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method Download PDFInfo
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- CN107335911A CN107335911A CN201710740995.9A CN201710740995A CN107335911A CN 107335911 A CN107335911 A CN 107335911A CN 201710740995 A CN201710740995 A CN 201710740995A CN 107335911 A CN107335911 A CN 107335911A
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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
-
- 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
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
-
- 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
-
- 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
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of binary channels object lens to focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method, including the quick focusing arrangement of horizontal crane span structure, linear motor, laser head and laser Machining head；Two cross slide ways are installed with horizontal crane span structure, the stator of the linear motor is fixedly mounted on the middle part of the horizontal crane span structure；Transverse slider is provided with two cross slide ways, transverse slider is connected with east of the linear motor, and driving transverse slider by dc motor, transversely guide rail moves back and forth；Laser beam foucing position is adjusted by the quick focusing arrangement of laser head, laser beam focus on the dot surface of light guide plate is processed by site by laser Machining head.The present invention sets two beam channels in laser head cavity, carries out dual-beam channel transfer to the laser beam after beam splitting, laser beam is focused on respectively by two focusing objective lens, by the utilization of the Energy Efficient of laser beam, focusing effect can be more obvious.
Description
Technical field
The invention belongs to field of laser processing, is related to the radium-shine manufacture field of backlight module light guide plate, and in particular to Yi Zhongshuan
Passage object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method.
Background technology
The effect of light guide plate is to guide the scattering direction of light, for improving brightness and controlling the uniformity of brightness, therefore, is led
The design of tabula rasa and manufacture are one of key technologies of backlight module.The size of scattering netted dot and density decide defeated in light guide plate
The brightness of light extraction and the uniformity.
At present, the manufacture method of light guide plate scattering netted dot has mould forming method, ink printing method and laser processing method etc..Swash
Light processing is a kind of noncontact processing mode, has the advantages that energy height, good directionality, high coherence, heat affected area are small, in work
Favor is enjoyed in industry manufacture field.With the continuous progress of science and technology, industrial superpower laser constantly advances, and swashs
Light device power constantly improves, and what is brought therewith is that the laser utilization of traditional single beam monofocal laser Machining head too low is asked
Topic.Traditional Laser Processing is mainly focused on using single beam laser or same focusing objective len focuses on respectively to the light beam after beam splitting,
Material processing is carried out, because the beam energy of laser emitting is excessive, often needs to decline to laser power using attenuation device
Subtract, therefore capacity usage ratio is not high in single beam laser focusing process；And the mode of single channel list object lens double focusing is easy
Cause the interference of light beam, laser beam can not focus in the center of lens, equally will also result in the utilization rate of laser energy
Deficiency, it is unable to reach the purpose of the site different with depth to two row's sizes while processing.
In summary, it is unable to reach in the prior art for the mode of single channel list object lens double focusing to two row's sizes and depth
Different sites processing problems simultaneously are spent, still lack effective solution.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of binary channels object lens to focus on light guide plate mesh point point
Beam laser processing device, system and method, process velocity and processing efficiency can be effectively improved, while improve laser energy
Utilization rate, processing efficiency can be improved more than an order of magnitude, significantly shorten process time, greatly save processing cost；Also
Can solve the problem of two row's different sizes and different depth site while processing.
The technical solution adopted in the present invention is：
A kind of binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), including horizontal crane span structure, linear motor,
The quick focusing arrangement of laser head and laser Machining head；The top of the horizontal crane span structure is installed with first cross slide way, described
The bottom of horizontal crane span structure is installed with the second cross slide way；The stator of the linear motor is fixedly mounted on the horizontal bridge
The middle part of frame, the mover of the dc motor are fixedly installed on the stator of the linear motor；Described first laterally leads
Transverse slider is provided with rail and the second cross slide way, the transverse slider is connected with the mover of the linear motor, passed through
Dc motor drives transverse slider, and transversely guide rail moves back and forth；The quick focusing arrangement of laser head is arranged on transverse slider
On, for adjusting laser beam foucing position, the laser Machining head passes through laser head fixed plate and the quick focusing arrangement of laser head
It is fixedly connected, for laser beam focus to be processed into site on the dot surface of light guide plate.
Further, the quick focusing arrangement of the laser head includes first bearing seat, second bearing seat, ball screw, watched
Motor and ball screw focusing sliding block are taken, the first bearing seat is fixedly installed on the top of the transverse slider, and described second
Bearing block is fixedly installed on the bottom of the transverse slider, and the ball screw focusing sliding block is arranged on transverse slider, and position
Between first bearing seat and second bearing seat, one end of the ball screw is connected with servomotor, and the other end passes through first
Bearing block and ball screw focusing sliding block are connected with second bearing seat；The laser head fixed plate is consolidated with ball screw focusing sliding block
Fixed connection.
Further, in addition to auxiliary drive, the auxiliary drive include two polished rods, described two polished rods
Positioned at the both sides of the ball screw, one end of the polished rod is connected with first bearing seat, and the other end is focused through ball screw
The through hole of sliding block is connected with second bearing seat.
Further, the laser Machining head includes laser head cavity, and the laser head cavity passes through laser head fixed plate
It is connected with ball screw focusing sliding block, the internal symmetry of the laser head cavity is provided with two beam channels, and the light beam leads to
The bottom in road is provided with object lens and places plate, and the object lens place plate and are provided with focusing objective len.
Further, the laser Machining head also includes the mirror support for being arranged on the top of the laser head cavity,
The mirror support includes the first longitudinally disposed supporting plate and the second supporting plate for being obliquely installed, second supporting plate and
First supporting plate is fixedly connected, and first supporting plate is fixedly connected with the laser head cavity rear wall, second support
Angle is in 135 ° between plate and the first supporting plate；Two are provided with second supporting plate and enters resonant reflec-tors, it is described enter chamber it is anti-
Penetrate the surface that mirror is located at beam channel, it is described enter between resonant reflec-tors and beam channel angle be in 45 °.
Further, in addition to focal length micromatic setting, the focal length micromatic setting includes two focal length fine-tuning nuts, described
Screw thread is provided with the top of focal length fine-tuning nut, the focal length fine-tuning nut is fixedly connected by screw thread with the bottom of beam channel.
Further, the focal length micromatic setting also includes being arranged on the fine setting spring that the object lens place plate both ends, leads to
Fine setting spring is crossed to be fixed object lens placement plate.
A kind of binary channels object lens focus on light guide plate mesh point beam splitting laser system of processing, including binary channels object lens focus on light guide plate
Site beam splitting laser processing unit (plant), laser, beam expander, beam splitter, the first speculum, the second speculum, the 3rd speculum,
Four speculums and the 5th speculum, the beam expander are located at the dead astern of laser, the beam splitter be located at beam expander just after
Side, the laser of the laser output change into laser beam after beam expander, and laser beam is incident to beam splitter, by beam splitter
After reflection and transmission, two light beams, respectively reflection laser beam and transmission laser beam are formed；The reflection laser beam is by beam splitter
The first speculum is incided after beam splitting vertically, horizontal laser beam is converted into after the reflection of the first speculum, it is anti-to be incident to second
Penetrate mirror, through the second speculum reflection after impinge perpendicularly on the 3rd speculum, through the 3rd speculum reflection after glancing incidence to pair
The one of passage object lens focusing light guide plate mesh point beam splitting laser processing unit (plant) enters on resonant reflec-tors；The transmission laser beam is by beam splitter
Glancing incidence is converted into vertical light beam after the reflection of the 4th speculum, is incident to the 5th reflection to the 4th speculum after beam splitting
Mirror, switchs to horizontal laser beam after the reflection of the 5th speculum, and glancing incidence to binary channels object lens focuses on light guide plate mesh point beam splitting and swashed
Optical machining device it is another enter resonant reflec-tors on.
Further, the laser uses pulse laser；The beam splitter uses semi-transparent semi-reflecting beam splitter, and quantity can
To be multiple.
A kind of binary channels object lens focus on light guide plate mesh point beam splitting laser processing method, comprise the following steps：
The thickness of step 1, measurement light guide plate to be processed, starts servomotor, ball screw is driven by ball-screw
Focusing sliding block moves up and down, and then drives laser Machining head to move into place；
Step 2, laser is opened, the laser of laser output obtains the laser beam of ideal noise diode, laser by beam expander
Beam is incident to beam splitter, after the reflection and transmission of beam splitter, forms reflection laser beam and transmission laser beam；
Step 3, reflection laser beam and transmission laser beam after multiple speculums, are incident to the two of laser Machining head respectively
It is individual enter resonant reflec-tors on, after the reflection that two enter resonant reflec-tors vertical incidence into two path channels, pass through two
Focusing objective len on the dot surface of light guide plate, will form two focuses after laser beam focus；
Step 3, the site processing request for whether meeting by comparing the Distance Judgment of two focuses light guide plate, if not meeting
It is required that laser beam foucing position is then adjusted by focal length fine-tuning nut, until meeting the site processing request of light guide plate；
Step 4, place light guide plate to be processed is smooth on light guide plate placement platform, pass through linear motor and drive laterally
Transversely guide rail moves back and forth sliding block, and then drives laser Machining head laterally to move along a straight line, while carries out the processing of two row sites,
Drive light guide plate to feed by light guide plate placement platform, carry out the dislocation processing of each row site.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention sets two beam channels in laser head cavity, and dual-beam is carried out to the laser beam after beam splitting
Channel transfer, by controlling the aperture of dual-beam passage, the veiling glare into beam channel is reduced, avoid light between two light paths of generation
The interference of beam and hot spot so that two laser energy is more stable；Laser beam is focused on respectively by two focusing objective lens,
Can be by the utilization of the Energy Efficient of laser beam, when realizing that light beam divides multiple beam, focusing effect can be more obvious；
(2) present invention is carried out quickly just using the quick focusing arrangement of laser head to the light guide plate sheet material for processing different-thickness
Step focuses on, and excludes the error in reading and operating error manually focused, improves automaticity and processing efficiency；
(3) further focused when the present invention uses focal length fine-tuning nut not up to standard to the site processing effect after preliminary focus on
Point fine setting, realization are accurately positioned reduction mismachining tolerance, improve the accuracy that object lens focus on；
(4) present invention is by reasonably arranging that it is each in light guide plate mesh point beam splitting laser system of processing that binary channels object lens focus on
The position of individual optics, saves space to greatest extent, can be achieved to reduce the purpose of the volume of whole process equipment；
(5) present invention is split using beam splitter to laser beam, improves utilization ratio of laser energy, strict to laser energy
Control, improve the precision of light guide plate scattering netted dot processing and the quality of processing；Double site, can by the way of dislocation is processed
To reduce the spacing of each row site, shorten the single site processing time used, improve processing efficiency.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is that binary channels object lens focusing light guide plate mesh point beam splitting laser processing unit (plant) structure is shown disclosed in the embodiment of the present invention
It is intended to；
Fig. 2 is laser Machining head structural representation disclosed in the embodiment of the present invention；
Fig. 3 is laser Machining head profile disclosed in the embodiment of the present invention；
Fig. 4 is focal length micromatic setting partial enlarged drawing disclosed in the embodiment of the present invention；
Fig. 5 is focal length fine-tuning nut structure chart disclosed in the embodiment of the present invention；
Fig. 6 is that binary channels object lens focusing light guide plate mesh point beam splitting laser system of processing structure is shown disclosed in the embodiment of the present invention
It is intended to；
Fig. 7 is the light guide plate that the processing of light guide plate mesh point beam splitting laser processing method is focused on using binary channels object lens of the present invention
Scattering netted dot design sketch；
Wherein, 1, first bearing seat, 2, laser head fixed plate, 3, ball-screw focusing sliding block, 4, linear motor rotor, 5,
Feed rod I, 6, transverse slider, 7, servomotor, 8, second bearing seat, 9, ball-screw, 10, feed rod II, 11, first laterally leads
Rail, 12, horizontal crane span structure, 13, the stator of linear motor, the 14, second cross slide way, 15, enter resonant reflec-tors I, 16, enter cavity reflection
Mirror II, 17, mirror support, 18, focal length fine-tuning nut II, 19, light guide plate, 20, site, 21, focal length fine-tuning nut I, 22, swash
Bare headed cavity, 23, beam channel I, 24, focusing objective len I, 25, fine setting spring I, 26, object lens place plate I, 27, laser beam I, 28,
Laser beam II, 29, object lens place plate II, 30, fine setting spring II, 31, focusing objective len II, 32, beam channel II, 33, screw thread,
34th, laser, 35, beam expander, 36, beam splitter, 37, speculum I, 38, speculum II, 39, speculum III, 40, speculum IV,
41st, speculum V.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, presence in the prior art can not realize the site different with depth to two row's sizes
Deficiency is processed simultaneously, in order to solve technical problem as above, present applicant proposes a kind of binary channels object lens to focus on light guide plate mesh point
Beam splitting laser processing unit (plant), system and method, process velocity and processing efficiency can be effectively improved, while improve laser energy
Utilization rate, processing efficiency can be improved more than an order of magnitude, significantly shorten process time, greatly save processing cost；
Can also solve the problem of two row's different sizes and different depth site while processing.
In a kind of typical embodiment of the application, as shown in Figure 1, there is provided a kind of binary channels object lens focus on light guide plate
Site beam splitting laser processing unit (plant), including the quick focusing arrangement of horizontal crane span structure 12, linear motor, laser head and Laser Processing
Head.
The horizontal crane span structure 12 is used for the device that support is provided for the horizontal linear motion of laser Machining head, the horizontal bridge
The top of frame is installed with first cross slide way 11, and the bottom of the horizontal crane span structure is installed with the second cross slide way 14；
The linear motor is the drive device that electric energy is directly changed into linear motion kinetic energy using electromagnetic action principle, is a kind of
The motor of linear reciprocating motion can be realized；The stator 13 of the linear motor is fixedly mounted in the horizontal crane span structure
Portion, the mover 4 of the dc motor are fixedly installed on the stator of the linear motor；The first cross slide way and
Transverse slider 6 is provided with two cross slide ways, the transverse slider 6 is connected with the mover of the linear motor, passes through direct current
Motor drives transverse slider, and transversely guide rail moves back and forth；The quick focusing arrangement of laser head is arranged on transverse slider 6,
For adjusting laser beam foucing position, the laser Machining head is consolidated by laser head fixed plate 2 and the quick focusing arrangement of laser head
Fixed connection, site is processed by laser beam focus on the dot surface of light guide plate.
The binary channels object lens that the present embodiment proposes focus on light guide plate mesh point beam splitting laser processing unit (plant), using linear motor
Drive laser Machining head laterally to move along a straight line, drive laser Machining head to move up and down using the quick focusing arrangement of laser head, adjust
Laser beam foucing position, sets two beam channels in the laser head cavity of laser Machining head, and two laser beams enter laser
Two beam channels of processing head, two focus points are formed using two focusing objective lens, improve the utilization rate of laser energy, are improved
Working depth, improve laser processing quality and realize that Laser Processing light guide plate scattering netted dot different size and the special of depth will
Ask.
In the present embodiment, as shown in figure 1, the quick focusing arrangement of the laser head includes first bearing seat 1, second bearing
Seat 8, ball screw 9, servomotor 7 and ball screw focusing sliding block 3, the first bearing seat 1 are fixedly installed on the transverse direction
The top of sliding block, the second bearing seat 8 are fixedly installed on the bottom of the transverse slider, the ball screw focusing sliding block 3
It is arranged on transverse slider, and between first bearing seat and second bearing seat, one end and the servo electricity of the ball screw 9
Machine 7 is connected, and the other end is connected through first bearing seat and ball screw focusing sliding block with second bearing seat 8；The ball screw
Laser head fixed plate 2 is connected with focusing sliding block, the laser head fixed plate 2 is that laser head cavity 22 and ball screw focusing are slided
The middle union piece of block 3, laser head cavity solid 22 is scheduled on ball screw focusing sliding block 3, ball screw focusing sliding block 3 is logical
The movement of ball screw 9 is crossed to adjust the position of laser Machining head, changes position and the size of focus spot.
On the basis of above-described embodiment, the binary channels object lens provided in one embodiment of the invention focus on guide-lighting expanded metals
Point beam splitting laser processing unit (plant) also includes auxiliary drive, and the auxiliary drive includes polished rod I 5 and polished rod II 10, institute
State polished rod I 5 and polished rod II 10 is located at the both sides of the ball screw, one end of the polished rod I 5 is connected with first bearing seat, separately
One end is connected through the through hole of ball screw focusing sliding block with second bearing seat, one end of the polished rod II 10 and first bearing seat
Connection, the through hole of the other end through ball screw focusing sliding block are connected with second bearing seat.It is auxiliary by polished rod I 5 and polished rod II 10
Help the transmission and feeding of ball-screw and ball screw focusing sliding block.
In the present embodiment, as shown in Fig. 2 the laser Machining head includes laser head cavity 22 and mirror support 17,
The laser head cavity 22 is connected by laser head fixed plate 2 with ball screw focusing sliding block 3, and the mirror support 17 is set
At the top of the laser head cavity, the mirror support 17 is described for the laser beam that optic path comes before receiving
Mirror support includes the first longitudinally disposed supporting plate and the second supporting plate being obliquely installed, second supporting plate and first
Supporting plate is fixedly connected, and first supporting plate is connected with the laser head cavity rear wall, second supporting plate and first
Angle is in 135 ° between supporting plate；Two are provided with second supporting plate and enters resonant reflec-tors, it is described enter resonant reflec-tors be located at
The surface of beam channel, it is described enter between resonant reflec-tors and beam channel angle be in 45 °, collimated laser beam is reflected into vertically
Downward laser beam, processed so as to the focusing of post laser beam.
On the basis of above-described embodiment, as shown in figure 3, the inside of laser head cavity described in one embodiment of the invention
It is symmetrically arranged with two beam channels, respectively beam channel I 23 and beam channel II 32；The bottom of the beam channel I is set
It is equipped with object lens and places plate I 26, the object lens places plate I and are provided with focusing objective len I 24；The bottom of the beam channel II is provided with
Object lens place plate II 29, and the object lens place plate II and are provided with focusing objective len II 31, pass through focusing objective len I 24 and focusing objective len II
31 pairs of laser beams I 27 and laser beam II 28 are focused respectively, can improve the crudy of site, improve site circularity.
Important channel of the middle laser head cavity that the present embodiment proposes for laser Machining head to beam transmission, by laser head
Cavity design can avoid interfering for two light beams, be capable of easier control single beam into the cavity of binary channels object lens
Energy；Two laser is focused respectively using two focusing objective lens, improves the crudy of site, improves site circle
Degree.Sufficiently large in laser energy, in the case of conditions permit, the application can also be carried out simultaneously to four light beams even more multiple beam
Focus on, can not only so improve the utilization rate of laser energy, the processing efficiency of site can also be improved.
On the basis of above-described embodiment, as in Figure 3-5, the binary channels object lens provided in one embodiment of the invention
Focusing on light guide plate mesh point beam splitting laser processing unit (plant) also includes focal length micromatic setting, and the focal length micromatic setting is finely tuned including focal length
The focal length fine-tuning nut II 18 of nut I 21 and second, the top of the focal length fine-tuning nut II 18 of focal length fine-tuning nut I 21 and second
Screw thread 33 is provided with, the focal length fine-tuning nut I 21 is fixedly connected by screw thread with the bottom of beam channel I, and the focal length is micro-
Nut II 18 is adjusted to be fixedly connected by screw thread with the bottom of beam channel II；Also include being arranged on object lens placement plate I both ends
Fine setting spring I 25 and be arranged on the fine setting spring II 30 that the object lens place the both ends of plate II.The application utilizes focal length fine setting spiral shell
Female screw thread is finely adjusted to the focal position of focusing objective len, while object lens placement plate compress admittedly using spring is finely tuned
It is fixed, improve the stability of focusing objective len；By way of dual regulation, the accurate fast positioning of processing focus, Ke Yiyou are realized
The error for avoiding occurring during the data of artificial reading slide measure of effect and manually-operated inaccuracy, shorten different in processing
The prover time of focal position is adjusted when thickness sheet material changes.
In the present embodiment, airflow hole is opened up on the laser head cavity, is passed through protective gas, ash when preventing from etching site
To the obstruction of light path after the flying into of dirt, the translucency of focusing objective len is kept.
Another exemplary embodiment of the application, as shown in Figure 6, there is provided a kind of binary channels object lens focus on guide-lighting expanded metals
Point beam splitting laser system of processing, the system include binary channels object lens and focus on light guide plate mesh point beam splitting laser processing unit (plant), laser
34th, beam expander 35, beam splitter 36, speculum I 37, speculum II 38, speculum III 39, speculum IV 40 and speculum V 41,
The beam expander 35 is located at the dead astern of laser, and the beam splitter 36 is located at the dead astern of beam expander, the laser output
Laser obtain the laser beam of ideal noise diode by beam expander, laser beam is incident to beam splitter 36, by beam splitter reflection and
After transmission, two light beams, respectively reflection laser beam and transmission laser beam are formed；The application uses semi-transparent semi-reflecting beam splitter,
It can need to distribute two laser beams according to a certain percentage according to real work in practical application；In the feelings that laser energy allows
Under condition, two level three-level beam splitter, or even more beam splitters can be used.
The reflection laser beam by inciding speculum I 37 vertically after the beam splitting of beam splitter 36, after the reflection of speculum I 37
Horizontal light beam is converted into, is incident to speculum II 38, is impinged perpendicularly on after the reflection of speculum II 38 on speculum III 39, through anti-
Penetrate glancing incidence after mirror III 39 reflects and enter resonant reflec-tors I to binary channels object lens focusing light guide plate mesh point beam splitting laser processing unit (plant)
On, vertical incidence is into path channels I 23 after the reflection of speculum I 15, after by focusing objective len I 24 by laser beam focus
The first focus is formed on the dot surface of light guide plate 19.
The transmission laser beam is reflected by glancing incidence after the beam splitting of beam splitter 36 to speculum IV 40 by speculum IV 40
After be converted into vertical light beam, be incident to speculum V 41, switch to horizontal light beam after the reflection of speculum V 41, glancing incidence to pair
Passage object lens focusing light guide plate mesh point beam splitting laser processing unit (plant) enters on resonant reflec-tors II, is erected after the reflection of speculum II 16
Directly be incident in path channels II 32, after by focusing objective len II 31 by laser beam focus on the dot surface of light guide plate 19 shape
Into the second focus.
There is a certain distance between first focus and the second focus, because the distance of the passage of laser head two is very small
, so the distance of two hot spots can also carry out certain limitation；, can also be by each in light path during using pulse laser
The adjustment of individual reflector position, controlling the length in two beam Propagation paths so that the formation of two focuses can be formed simultaneously,
Two focuses can also be one in front and one in back formed when needing.
Another exemplary embodiment of the application, there is provided a kind of binary channels object lens focus on light guide plate mesh point beam splitting laser
Processing method, comprise the following steps：
The thickness of step 1, measurement light guide plate to be processed, starts servomotor, ball screw is driven by ball-screw
Focusing sliding block moves up and down, and then drives laser Machining head to move into place；
Step 2, laser is opened, the laser of laser output obtains the laser beam of ideal noise diode, laser by beam expander
Beam is incident to beam splitter, after the reflection and transmission of beam splitter, forms reflection laser beam and transmission laser beam；
Step 3, reflection laser beam and transmission laser beam after multiple speculums, are incident to the two of laser Machining head respectively
It is individual enter resonant reflec-tors on, after the reflection that two enter resonant reflec-tors vertical incidence into two path channels, pass through two
Focusing objective len on the dot surface of light guide plate, will form two focuses after laser beam focus；
Step 3, the site processing request for whether meeting by comparing the Distance Judgment of two focuses light guide plate, if not meeting
It is required that laser beam foucing position is then adjusted by focal length fine-tuning nut, until meeting the site processing request of light guide plate；
Step 4, place light guide plate to be processed is smooth on light guide plate placement platform, pass through linear motor and drive laterally
Transversely guide rail moves back and forth sliding block, and then drives laser Machining head laterally to move along a straight line, while carries out the processing of two row sites,
Drive light guide plate to feed by light guide plate placement platform, carry out the dislocation processing of each row site, as shown in Figure 7.
As can be seen from the above description, the application the above embodiments realize following technique effect：
(1) present invention sets two beam channels in laser head cavity, and dual-beam is carried out to the laser beam after beam splitting
Channel transfer, by controlling the aperture of dual-beam passage, the veiling glare into beam channel is reduced, avoid light between two light paths of generation
The interference of beam and hot spot so that two laser energy is more stable；Laser beam is focused on respectively by two focusing objective lens,
Can be by the utilization of the Energy Efficient of laser beam, when realizing that light beam divides multiple beam, focusing effect can be more obvious；
(2) present invention is carried out quickly just using the quick focusing arrangement of laser head to the light guide plate sheet material for processing different-thickness
Step focuses on, and excludes the error in reading and operating error manually focused, improves automaticity and processing efficiency；
(3) further focused when the present invention uses focal length fine-tuning nut not up to standard to the site processing effect after preliminary focus on
Point fine setting, realization are accurately positioned reduction mismachining tolerance, improve the accuracy that object lens focus on；
(4) present invention is by reasonably arranging that it is each in light guide plate mesh point beam splitting laser system of processing that binary channels object lens focus on
The position of individual optics, saves space to greatest extent, can be achieved to reduce the purpose of the volume of whole process equipment；
(5) present invention is split using beam splitter to laser beam, improves utilization ratio of laser energy, strict to laser energy
Control, improve the precision of light guide plate scattering netted dot processing and the quality of processing；Double site, can by the way of dislocation is processed
To reduce the spacing of each row site, shorten the single site processing time used, improve processing efficiency.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a kind of binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), including horizontal crane span structure, linear motor, swash
Bare headed quick focusing arrangement and laser Machining head；The top of the horizontal crane span structure is installed with first cross slide way, the horizontal stroke
The second cross slide way is installed with to the bottom of crane span structure；The stator of the linear motor is fixedly mounted on the horizontal crane span structure
Middle part, the mover of the dc motor is fixedly installed on the stator of the linear motor；The first cross slide way
With transverse slider is provided with the second cross slide way, the transverse slider is connected with the mover of the linear motor, by straight
Stream motor drives transverse slider, and transversely guide rail moves back and forth；The quick focusing arrangement of laser head is arranged on transverse slider
On, for adjusting laser beam foucing position, the laser Machining head passes through laser head fixed plate and the quick focusing arrangement of laser head
It is fixedly connected, for laser beam focus to be processed into site on the dot surface of light guide plate.
2. a kind of binary channels object lens according to claim 1 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is that the quick focusing arrangement of laser head includes first bearing seat, second bearing seat, ball screw, servomotor and ball wire
Bar focusing sliding block, the first bearing seat are fixedly installed on the top of the transverse slider, the second bearing seat fixed setting
In the bottom of the transverse slider, the ball screw focusing sliding block is arranged on transverse slider, and positioned at first bearing seat and
Between second bearing seat, one end of the ball screw is connected with servomotor, and the other end passes through first bearing seat and ball wire
Bar focusing sliding block is connected with second bearing seat；The laser head fixed plate is fixedly connected with ball screw focusing sliding block.
3. a kind of binary channels object lens according to claim 1 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is, in addition to auxiliary drive, the auxiliary drive include two polished rods, described two polished rods are located at the ball wire
The both sides of bar, one end of the polished rod are connected with first bearing seat, through hole and the of the other end through ball screw focusing sliding block
Two bearing bracket connects.
4. a kind of binary channels object lens according to claim 1 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is that the laser Machining head includes laser head cavity, the laser head cavity is focused by laser head fixed plate and ball screw
Sliding block connects, and the internal symmetry of the laser head cavity is provided with two beam channels, and the bottom of the beam channel is provided with
Object lens place plate, and the object lens place plate and are provided with focusing objective len.
5. a kind of binary channels object lens according to claim 1 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is that the laser Machining head also includes the mirror support for being arranged on the top of the laser head cavity, the mirror support
Including the first longitudinally disposed supporting plate and the second supporting plate being obliquely installed, second supporting plate and the first supporting plate are fixed
Connection, first supporting plate are fixedly connected with the laser head cavity rear wall, second supporting plate and the first supporting plate
Between angle be in 135 °；Two are provided with second supporting plate and enters resonant reflec-tors, it is described enter resonant reflec-tors lead to positioned at light beam
The surface in road, it is described enter between resonant reflec-tors and beam channel angle be in 45 °.
6. a kind of binary channels object lens according to claim 1 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is, in addition to focal length micromatic setting, the focal length micromatic setting include two focal length fine-tuning nuts, the focal length fine-tuning nut top
Portion is provided with screw thread, and the focal length fine-tuning nut is fixedly connected by screw thread with the bottom of beam channel.
7. a kind of binary channels object lens according to claim 6 focus on light guide plate mesh point beam splitting laser processing unit (plant), its feature
It is that the focal length micromatic setting also includes being arranged on the fine setting spring that the object lens place plate both ends, by finely tuning spring to thing
Mirror is placed plate and is fixed.
8. a kind of binary channels object lens focus on light guide plate mesh point beam splitting laser system of processing, it is characterized in that, including such as claim 1-7
Any one of binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), laser, beam expander, beam splitter,
First speculum, the second speculum, the 3rd speculum, the 4th speculum and the 5th speculum, the beam expander are located at laser
Dead astern, the beam splitter is located at the dead astern of beam expander, and the laser of the laser output changes into after beam expander
Laser beam, laser beam are incident to beam splitter, after beam splitter reflects and transmits, form two light beams, respectively reflection laser
Beam and transmission laser beam；The reflection laser beam by inciding the first speculum vertically after beam splitter beam splitting, by the first reflection
Horizontal laser beam is converted into after mirror reflection, is incident to the second speculum, it is anti-to impinge perpendicularly on the 3rd after the reflection of the second speculum
Penetrate on mirror, glancing incidence focuses on light guide plate mesh point beam splitting laser processing unit (plant) to binary channels object lens after the reflection of the 3rd speculum
One enters on resonant reflec-tors；The transmission laser beam is by glancing incidence after beam splitter beam splitting to the 4th speculum, by the 4th reflection
Vertical light beam is converted into after mirror reflection, is incident to the 5th speculum, switchs to horizontal laser beam after the reflection of the 5th speculum, it is horizontal
Incide binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant) it is another enter resonant reflec-tors on.
9. binary channels object lens according to claim 8 focus on light guide plate mesh point beam splitting laser system of processing, it is characterized in that, institute
State laser and use pulse laser；The beam splitter uses semi-transparent semi-reflecting beam splitter, and quantity can be multiple.
10. a kind of binary channels object lens focus on light guide plate mesh point beam splitting laser processing method, it is characterized in that, comprise the following steps：
The thickness of step 1, measurement light guide plate to be processed, starts servomotor, drives ball screw to focus by ball-screw
Sliding block moves up and down, and then drives laser Machining head to move into place；
Step 2, laser is opened, the laser of laser output obtains the laser beam of ideal noise diode by beam expander, and laser beam enters
Beam splitter is incident upon, after the reflection and transmission of beam splitter, forms reflection laser beam and transmission laser beam；
Respectively after multiple speculums, be incident to laser Machining head two enter for step 3, reflection laser beam and transmission laser beam
On resonant reflec-tors, vertical incidence is into two path channels after the reflection that two enter resonant reflec-tors, by two focusing
Object lens on the dot surface of light guide plate, will form two focuses after laser beam focus；
Step 3, by comparing the Distance Judgment of two focuses whether meet the site processing request of light guide plate, will if not meeting
Ask, then laser beam foucing position is adjusted by focal length fine-tuning nut, until meeting the site processing request of light guide plate；
Step 4, place light guide plate to be processed is smooth on light guide plate placement platform, transverse slider is driven by linear motor
Transversely guide rail moves back and forth, and then drives laser Machining head laterally to move along a straight line, while carries out the processing of two row sites, passes through
Light guide plate placement platform drives light guide plate feeding, carries out the dislocation processing of each row site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710740995.9A CN107335911A (en) | 2017-08-25 | 2017-08-25 | Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710740995.9A CN107335911A (en) | 2017-08-25 | 2017-08-25 | Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method |
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| CN107335911A true CN107335911A (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710740995.9A Withdrawn CN107335911A (en) | 2017-08-25 | 2017-08-25 | Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549007A (en) * | 2019-08-13 | 2019-12-10 | 江苏屹诚激光装备制造有限公司 | High-precision laser cutting equipment |
| CN110842381A (en) * | 2020-01-16 | 2020-02-28 | 广东电网有限责任公司东莞供电局 | Laser processing equipment and laser processing head thereof |
| CN111474733A (en) * | 2020-04-13 | 2020-07-31 | 宁波大学 | Wide-range high-frequency-response double-objective-lens optical independent confocal measuring head |
| CN112372161A (en) * | 2020-09-24 | 2021-02-19 | 松山湖材料实验室 | Laser drilling system, method, computer device and readable storage medium |
| CN114147345A (en) * | 2022-02-08 | 2022-03-08 | 徐州志宏激光技术有限公司 | Laser cutting machine capable of automatically adjusting focusing of laser beam |
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2017
- 2017-08-25 CN CN201710740995.9A patent/CN107335911A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549007A (en) * | 2019-08-13 | 2019-12-10 | 江苏屹诚激光装备制造有限公司 | High-precision laser cutting equipment |
| CN110842381A (en) * | 2020-01-16 | 2020-02-28 | 广东电网有限责任公司东莞供电局 | Laser processing equipment and laser processing head thereof |
| CN110842381B (en) * | 2020-01-16 | 2020-05-08 | 广东电网有限责任公司东莞供电局 | Laser processing head |
| CN111474733A (en) * | 2020-04-13 | 2020-07-31 | 宁波大学 | Wide-range high-frequency-response double-objective-lens optical independent confocal measuring head |
| CN112372161A (en) * | 2020-09-24 | 2021-02-19 | 松山湖材料实验室 | Laser drilling system, method, computer device and readable storage medium |
| CN114147345A (en) * | 2022-02-08 | 2022-03-08 | 徐州志宏激光技术有限公司 | Laser cutting machine capable of automatically adjusting focusing of laser beam |
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