CN104084694A - Straight-head-type laser marking device - Google Patents
Straight-head-type laser marking device Download PDFInfo
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- CN104084694A CN104084694A CN201410342102.1A CN201410342102A CN104084694A CN 104084694 A CN104084694 A CN 104084694A CN 201410342102 A CN201410342102 A CN 201410342102A CN 104084694 A CN104084694 A CN 104084694A
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- laser
- theta lens
- ruddiness
- lens
- expanding system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/44—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements
- B41J2/442—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements using lasers
Abstract
The invention discloses a straight-head-type laser marking device which comprises a computer control system, a laser source, a beam expanding system, a scanning galvanometer, an F-theta lens, a red light indicating system, a 45-degree beam-combination mirror and an auxiliary focusing red light indicating system. Lasers are totally reflected by the beam-combination mirror through the beam expanding system and transmitted out in the direction perpendicular to the incidence direction of the lasers; indicating red light penetrates through the beam-combination mirror to be transmitted out, and the light path of the indicating red light is the same as that of the lasers; the lasers and the indicating red light which are of the same light patch enter the scanning galvanometer and then are reflected and are focused to the surface of a marking workpiece through the F-theta lens in the same direction with the incidence direction of the lasers; the auxiliary focusing indicating red light direction is adjusted and then is overlapped with the indicating red light transmitted out in the optical axis direction of the F-theta lens on the focus point of the F-theta lens focusing plane. By means of the straight-head-type laser marking device, the laser beam entering the surface of the workpiece is made to be parallel to the transmitted-out light beam of a laser source, the distance among the lasers and a marked object can be adjusted conveniently, and the installation space is small; the F-theta lens can be selected without limits, and the requirements for the marking accuracy and the marking speed are met.
Description
Technical field
The invention belongs to laser-marking field, relate in particular to the laser beam of surface of the work and the parallel a kind of straight peen type laser-marking equipment of the outgoing beam of lasing light emitter of inciding.
Background technology
Now along with informationization technology formerly system make the fast development in field, the field such as review in production, storage, logistics, supply chain management, product quality article mark tracing technology proposed to higher demand,
Drive laser-marking technology to apply more and more widely in all trades and professions.Become indispensable technique one in packaging, electronics, automobile and other industries laser-marking technology, laser-marking equipment also becomes the important step of production sequence; Along with improving constantly of industrialized level, the demand of laser-marking equipment is also presented to variation.Traditional standard laser marking equipment is all L-type, the probe being formed by scanning galvanometer and F-theta lens and comprise the fuselage that laser instrument and other optical elements form and be L-type, the size of the cross-sectional direction of this laser-marking equipment is larger, incide the laser beam of surface of the work and the outgoing beam of lasing light emitter is vertical, as shown in Figure 1.The operating distance of common short focal length F-theta lens is in 127mm left and right, and the operating distance of long-focus also only has 345mm left and right; This just means that if a workpiece is identified, the distance between surface of the work to be identified and F-theta lens plane need be in this scope of 127-345mm; But reality by laser-marking integration of equipments on production line time, be limited by apparatus for production line, the cross sectional dimensions of L-type laser-marking equipment is due to larger, installing space is limited, can not adjust flexibly the distance between laser-marking equipment and mark object.If when between them, distance is within the scope of F-theta lens operating distance, sometimes can be by selecting suitable long-focus F-theta lens to solve, but also brought the problem of laser-marking precision and mark Speed Reduction simultaneously; If when between them, distance exceeds within the scope of F-theta lens operating distance, the laser-marking equipment of standard just cannot use on production line.
Summary of the invention
Object of the present invention is all L-type in order to overcome traditional standard laser marking equipment, the probe being formed by scanning galvanometer and F-theta lens and comprise the fuselage that laser instrument and other optical elements form and be L-type, the larger-size deficiency of the cross-sectional direction of this laser-marking equipment, provides a kind of straight peen type laser-marking equipment.
Technical scheme of the present invention is a kind of straight peen type laser-marking equipment, and this equipment comprises computer control system, lasing light emitter, beam-expanding system, scanning galvanometer and F-theta lens, is provided with the first support in lasing light emitter front, and described beam-expanding system is contained on this support; Be characterized in described beam-expanding system front, scanning galvanometer below has additional the second support, and ruddiness indication mechanism is installed on the second support, is also provided with and can sees through 650nm ruddiness on the second support, the 45 degree light combination mirrors that 1064nm laser is all-trans; On panel below F-theta lens, have additional the 3rd support, rotatable auxiliary focusing ruddiness indication mechanism is housed on the 3rd support; The laser of lasing light emitter output by beam-expanding system through 45 degree light combination mirror total reflections, then in the direction outgoing that becomes 90 degree with laser incident direction; Be arranged on the instruction ruddiness of 45 degree light combination mirror belows, the ruddiness of output 650nm, sees through 45 degree light combination mirrors and penetrates, and realizes same light path with laser; The laser of same light path and instruction ruddiness enter after scanning galvanometer, after the speculum reflection of scanning galvanometer X-axis and Y direction, finally, passing through F-theta lens with laser incident direction direction in the same way, focus on mark surface of the work; Be arranged on the auxiliary focusing instruction ruddiness below F-theta lens, after direction regulates, the focus place with the instruction ruddiness of F-theta lens axis direction outgoing on F-theta lens focal plane overlaps.
State lasing light emitter and adopt gas laser, solid state laser or optical fiber laser, laser operation is at continuous mode or pulse mode, laser operation is in the time of pulse mode, laser pulse width is from ns-fs, and average laser power is from 5W to 100W, and repetition rate is from 20KHz to 200KHz.
Described beam-expanding system is made up of concavees lens and the convex lens of two different focal, after short focal length concavees lens are placed the polarizer, after long-focus convex lens are placed on concave and convex lenses.
Short focal length concavees lens and the long-focus convex lens of described beam-expanding system are confocal placements, and the ratio of its focal length to be beam-expanding system expand multiple.
Described 45 degree light combination mirrors are thoroughly high to the laser of 650nm, and transmitance is greater than 99%; Laser 45 degree to wavelength used are all-trans, and reflectivity is greater than 99.5%.
The clear aperature of described scanning galvanometer is greater than the size through beam-expanding system emitting laser hot spot.
Described scanning galvanometer is built-in with two high-speed servo motors, laser reflection eyeglass is installed on the axle of each high-speed servo motor, two high-speed servo motors intersect to be installed, and galvanometer head two high-speed servo motors under computer control drive two speculums to do the rotation of high-speed, high accuracy, short vector.
Beneficial effect of the present invention: because straight peen type laser-marking device structure of the present invention makes to incide the laser beam of surface of the work and the outgoing beam of lasing light emitter is parallel, the distance of the adjustment that therefore the present invention can be convenient, flexible and mark object, needed installing space minimum; User can the optimal F-theta lens of unrestricted selection, the to greatest extent satisfied requirement to mark precision, mark speed.Adopt two ruddiness instructions simultaneously, object that can be to be identified in advance positions with content to be identified and carries out preview, can guarantee quickly and easily again the surface of Laser Focusing at mark workpiece, has reduced skill and experience to operating personnel, improve operating efficiency, ensured mark quality.
Brief description of the drawings
Fig. 1 is the structural representation of traditional standard laser marking equipment;
Fig. 2 is the structural representation of straight peen type laser-marking equipment.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
As shown in Figure 1, traditional laser-marking equipment comprises computer control system 1, lasing light emitter 2, beam-expanding system 3, scanning galvanometer 6, F-theta lens 8, is provided with the first support 9 in lasing light emitter 2 fronts, is used for installing beam-expanding system 3.The laser that lasing light emitter 2 is exported enters scanning galvanometer 6 by beam-expanding system 3, after the speculum reflection of galvanometer X-axis and Y direction, finally passes through F-theta lens 8 in the direction vertical with laser incident direction, focuses on mark surface of the work 12.
The embodiment of the present invention, as shown in Figure 2, a kind of straight peen type laser-marking equipment, this equipment comprises computer control system 1, lasing light emitter 2, beam-expanding system 3, scanning galvanometer 6 and F-theta lens 8, be provided with the first support 9 in lasing light emitter 2 fronts, described beam-expanding system 3 is contained on this first support 9; It is characterized in that, described beam-expanding system 3 fronts, scanning galvanometer 6 belows have additional the second support 10, on the second support 10, ruddiness indication mechanism 5 are installed, on the second support 10, be also provided with and can see through 650nm ruddiness, the 45 degree light combination mirrors 4 that 1064nm laser is all-trans; On panel 13 below F-theta lens 8, have additional the 3rd support 11, rotatable auxiliary focusing ruddiness indication mechanism 7 is housed on the 3rd support 11; On the 3rd support 11, have rotary locking device, the laser that lasing light emitter 2 is exported through 45 degree light combination mirror 4 total reflections, then becomes the direction outgoing of 90 degree by beam-expanding system 3 in the laser incident direction of exporting with lasing light emitter 2; In the ruddiness indication mechanism 5 of 45 degree light combination mirror 4 belows, the ruddiness of output 650nm, sees through 45 degree light combination mirrors 4 and penetrates, and realizes same light path with the laser that lasing light emitter 2 is exported; The laser of same light path and instruction ruddiness enter after scanning galvanometer 6, after the X-axis of scanning galvanometer 6 and the reflection of the speculum of Y direction, finally by F-theta lens, focus on mark surface of the work 12; Be in the auxiliary focusing instruction ruddiness that F-theta lens 8 rotatable auxiliary focusing ruddiness indication mechanism 7 is below sent, after direction regulates, the focus place with the instruction ruddiness of F-theta lens 8 optical axis direction outgoing on F-theta lens 8 focal planes overlaps.
Described beam-expanding system 3 is made up of concavees lens and the convex lens of two different focal, after short focal length concavees lens are placed the polarizer, after long-focus convex lens are placed on concave and convex lenses.Short focal length concavees lens and long-focus convex lens are confocal placements, and the ratio of its focal length to be beam-expanding system expand multiple.According to design function, two lens in beam-expanding system 3 should confocally be placed, and the ratio of long-focus and short focal length is the ratio that laser beam amplifies, and keeps the distance between two lens constant, can ensure that it is directional light that laser beam passes through after beam-expanding system.The laser beam amplifying through beam-expanding system, can reduce the angle of divergence of laser beam and reduce the power density on scanning galvanometer, has reduced the size of laser focusing hot spot, has improved mark precision and mark speed, has improved mark quality.
F-theta lens 8 are flat field condenser lenses, and laser beam by these lens, can form the focal beam spot of even size in whole lens focal plane, make in whole image planes picture element consistent, and aberration are little, exists without vignetting, has improved the uniformity of mark.
As shown in Figure 2, rotatable auxiliary focusing ruddiness indication mechanism 7 is housed on the 3rd support 11, the adjustable direction of ruddiness that auxiliary focusing ruddiness indication mechanism 7 is sent.For the F-theta lens 8 of certain focal length, regulate the red direction of light of auxiliary focusing, itself and instruction ruddiness are intersected at the focal plane place of F-theta lens 8.After workpiece to be identified has been placed, adjust the distance of laser-marking equipment and workpiece to be identified, until the intersection point of this two-beam drops on the surface of workpiece to be identified, just show that the focal plane that identifies surface of the work and F-theta lens has overlapped.The visual focusing mode of this ruddiness, can guarantee the surface of Laser Focusing at mark workpiece quickly and easily, has reduced skill and experience to operating personnel, has improved operating efficiency, has ensured mark quality.
Claims (7)
1. a straight peen type laser-marking equipment, this equipment comprises computer control system (1), lasing light emitter (2), beam-expanding system (3), scanning galvanometer (6) and F-theta lens (8), be provided with the first support (9) in lasing light emitter (2) front, described beam-expanding system (3) is contained on this first support (9); It is characterized in that, described beam-expanding system (3) front, scanning galvanometer (6) below has additional the second support (10), in the upper ruddiness indication mechanism (5) of installing of the second support (10), on the second support (10), be also provided with and can see through 650nm ruddiness, the 45 degree light combination mirrors (4) that 1064nm laser is all-trans; On panel (13) below F-theta lens (8), have additional the 3rd support (11), on the 3rd support (11), rotatable auxiliary focusing ruddiness indication mechanism (7) is housed; The laser of lasing light emitter (2) output through 45 degree light combination mirror (4) total reflections, then becomes the direction outgoing of 90 degree by beam-expanding system (3) in the laser incident direction of exporting with lasing light emitter (2); In the ruddiness indication mechanism (5) of 45 degree light combination mirror (4) belows, the ruddiness of output 650nm, sees through 45 degree light combination mirrors (4) and penetrates, and realizes same light path with the laser of lasing light emitter (2) output; The laser of same light path and instruction ruddiness enter after scanning galvanometer (6), after the X-axis of scanning galvanometer (6) and the reflection of the speculum of Y direction, finally by F-theta lens, focus on mark surface of the work (12); Be in the auxiliary focusing instruction ruddiness that F-theta lens (8) rotatable auxiliary focusing ruddiness indication mechanism (7) is below sent, after direction regulates, the focus place with the instruction ruddiness of F-theta lens (8) optical axis direction outgoing on F-theta lens (8) focal plane overlaps.
2. a kind of straight peen type laser-marking equipment according to claim 1, it is characterized in that, described lasing light emitter (2) adopts gas laser, solid state laser or optical fiber laser, laser operation is at continuous mode or pulse mode, and laser operation is in the time of pulse mode, and laser pulse width is from ns-fs, average laser power is from 5W to 100W, and repetition rate is from 20KHz to 200KHz.
3. a kind of straight peen type laser-marking equipment according to claim 1, it is characterized in that, described beam-expanding system (3) is made up of concavees lens and the convex lens of two different focal, after short focal length concavees lens are placed the polarizer, after long-focus convex lens are placed on concave and convex lenses.
4. a kind of straight peen type laser-marking equipment according to claim 3, is characterized in that, short focal length concavees lens and the long-focus convex lens of described beam-expanding system (3) are confocal placements, and the ratio of its focal length is the multiple that expands of beam-expanding system (3).
5. straight peen type laser-marking equipment according to claim 1, is characterized in that, described 45 degree light combination mirrors (4) are thoroughly high to the laser of 650nm, and transmitance is greater than 99%; Laser 45 degree to wavelength used are all-trans, and reflectivity is greater than 99.5%.
6. a kind of straight peen type laser-marking equipment according to claim 1, is characterized in that, the clear aperature of described scanning galvanometer (6) is greater than the size through beam-expanding system (3) emitting laser hot spot.
7. a kind of straight peen type laser-marking equipment according to claim 1, scanning galvanometer (6) is built-in with two high-speed servo motors, laser reflection eyeglass is installed on the axle of each high-speed servo motor, two high-speed servo motors intersect to be installed, and galvanometer head two high-speed servo motors under computer control drive two speculums to do the rotation of high-speed, high accuracy, short vector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342102.1A CN104084694B (en) | 2014-07-18 | 2014-07-18 | Straight peen type laser-marking equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410342102.1A CN104084694B (en) | 2014-07-18 | 2014-07-18 | Straight peen type laser-marking equipment |
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| Publication Number | Publication Date |
|---|---|
| CN104084694A true CN104084694A (en) | 2014-10-08 |
| CN104084694B CN104084694B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410342102.1A Active CN104084694B (en) | 2014-07-18 | 2014-07-18 | Straight peen type laser-marking equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598364A (en) * | 2017-11-09 | 2018-01-19 | 云南电网有限责任公司临沧供电局 | A kind of Laser Processing and focus fixing device and method based on CCD imagings |
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| CN102300717A (en) * | 2009-01-27 | 2011-12-28 | 静冈县 | Laser marking method |
| KR101245803B1 (en) * | 2011-02-14 | 2013-03-21 | (주)와이티에스 | Using a laser diode for makingyong IC titler |
| CN103418911A (en) * | 2012-05-21 | 2013-12-04 | 武汉金至园科技有限公司 | Narrow-space laser marking method and marking machine thereof |
| CN103909346A (en) * | 2013-12-26 | 2014-07-09 | 广东大族粤铭激光科技股份有限公司 | Large format laser marking device |
| CN203973059U (en) * | 2014-07-18 | 2014-12-03 | 上海市激光技术研究所 | Straight peen type laser-marking equipment |
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2014
- 2014-07-18 CN CN201410342102.1A patent/CN104084694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102300717A (en) * | 2009-01-27 | 2011-12-28 | 静冈县 | Laser marking method |
| KR101245803B1 (en) * | 2011-02-14 | 2013-03-21 | (주)와이티에스 | Using a laser diode for makingyong IC titler |
| CN103418911A (en) * | 2012-05-21 | 2013-12-04 | 武汉金至园科技有限公司 | Narrow-space laser marking method and marking machine thereof |
| CN103909346A (en) * | 2013-12-26 | 2014-07-09 | 广东大族粤铭激光科技股份有限公司 | Large format laser marking device |
| CN203973059U (en) * | 2014-07-18 | 2014-12-03 | 上海市激光技术研究所 | Straight peen type laser-marking equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107598364A (en) * | 2017-11-09 | 2018-01-19 | 云南电网有限责任公司临沧供电局 | A kind of Laser Processing and focus fixing device and method based on CCD imagings |
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| Publication number | Publication date |
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| CN104084694B (en) | 2016-02-10 |
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Address after: 200233 No. 770, Xuhui District, Shanghai, Yishan Road Patentee after: Shanghai Laser Technology Research Institute Co.,Ltd. Address before: 200233 No. 770, Xuhui District, Shanghai, Yishan Road Patentee before: Shanghai Institute of Laser Technology |