CN102079176A - Laser marking machine - Google Patents

Laser marking machine Download PDF

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Publication number
CN102079176A
CN102079176A CN2009101885726A CN200910188572A CN102079176A CN 102079176 A CN102079176 A CN 102079176A CN 2009101885726 A CN2009101885726 A CN 2009101885726A CN 200910188572 A CN200910188572 A CN 200910188572A CN 102079176 A CN102079176 A CN 102079176A
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China
Prior art keywords
lens
laser marking
laser
marking machine
prime
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Pending
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CN2009101885726A
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Chinese (zh)
Inventor
高云峰
汪玉树
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Shenzhen Hans Laser Technology Co Ltd
Han s Laser Technology Co Ltd
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Shenzhen Hans Laser Technology Co Ltd
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Application filed by Shenzhen Hans Laser Technology Co Ltd filed Critical Shenzhen Hans Laser Technology Co Ltd
Priority to CN2009101885726A priority Critical patent/CN102079176A/en
Publication of CN102079176A publication Critical patent/CN102079176A/en
Pending legal-status Critical Current

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Abstract

The invention is suitable for laser marking and provides a laser marking machine. The laser marking machine comprises a laser, a beam expander, a scanning galvanometer assembly and a flat field focusing lens. Laser light emitted by the laser is expanded by the beam expander, then enters the scanning galvanometer assembly, passes through the flat field focusing lens, and then is projected to the surface of a workpiece. A zoom lens assembly is arranged on a transmission light path of the laser light. The zoom lens assembly is arranged between the laser and the beam expander or between the beam expander and the scanning galvanometer assembly. The zoom lens assembly consists of a concave lens and a convex lens or a concave mirror which is at a distance of d with the concave lens. A formula of a focus f' of the zoom lens assembly is shown as a specification, wherein f1' represents an image focal length of the concave lens and f2' represents an image focal length of the convex lens. The formula shows that the focus of the zoom lens assembly changes with the distance d, so that the height of a focusing light spot of the flat field focusing lens is changed and the marking of a nonplanar surface can be realized. Moreover, the marking efficiency can also be increased.

Description

A kind of laser marking machine
Technical field
The invention belongs to the laser marking technology, relate in particular to a kind of laser marking machine.
Background technology
Laser marking is to utilize the high-energy-density laser beam, surface of the work is carried out local irradiation, make skin-material vaporization or generation change color rapidly, thereby expose the deep layer material, perhaps cause the Chemical Physics variation of entry material and carve vestige, perhaps burn the part material, show figure, the literal of required etching by luminous energy.Existing laser marking machine comprises laser instrument 11, beam expanding lens 12, scanning galvanometer group 13 and flat field focus lamp 14.As shown in Figure 1, the focus point of the laser that laser instrument 11 sends after via beam expanding lens 12, scanning galvanometer group 13 and flat field focus lamp 14 is along with the swing motion in one plane all the time of galvanometer, therefore existing laser marking machine can only be used for the plane of mark workpieces, has limited range of application greatly.As shown in Figure 2, if the step surface of mark workpieces can only mechanically change the distance D between flat field focus lamp and the workpiece, mechanical movement is slow, inefficiency.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of laser marking machine of applied range, is intended to solve that existing laser marking machine range of application is narrow, inefficient problem during the mark workpieces non-planar surfaces.
The embodiment of the invention is to realize like this, a kind of laser marking machine, comprise: laser instrument, beam expanding lens, scanning galvanometer group and flat field focus lamp, the laser that described laser instrument sends is after described beam expanding lens expands bundle, enter described scanning galvanometer group, after described flat field focus lamp focuses on, project surface of the work again, establish the zoom lens set on the transmission light path of described laser.
The eyeglass of zoom described in the embodiment of the invention be mounted between described laser instrument and the described beam expanding lens or described beam expanding lens and described scanning galvanometer group between.
Zoom lens set described in wherein a kind of embodiment of the present invention by concavees lens and with described concavees lens distance be d 1Convex lens constitute, the focal distance f of described zoom lens set ' formula as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 1 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of convex lens.
From the focal length of the described as can be seen zoom lens set of above formula along with d 1Change and change, thereby change the height of flat field focus lamp focal beam spot.Present embodiment cooperates laser marking software, input non-planar surfaces (as the step surface or the curved surface of workpiece) three-dimensional coordinate function, utilize the described concavees lens of Electric Machine Control or and convex lens motions can realize the variation of laser focus point height (Z axle) cooperating the motion of X, Y galvanometer can realize the mark of non-planar surfaces (as the step surface or the curved surface of workpiece); Fast 2 more than the order of magnitude of control zoom eyeglass motions than the control workpiece motion s, so this laser marking machine can promote the efficient of workpiece non-planar surfaces mark greatly.
Zoom lens set described in the another kind of embodiment of the present invention by concavees lens and with described concavees lens distance be d 2Concave mirror constitute, the focal distance f of described zoom lens set ' formula as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 2 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of concave mirror.
From the focal length of the described as can be seen zoom lens set of above formula along with d 2Change and change, thereby change the height of flat field focus lamp focal beam spot.Present embodiment cooperates laser marking software, input non-planar surfaces (as the step surface or the curved surface of workpiece) three-dimensional coordinate function, utilize the described concavees lens of Electric Machine Control or and concave mirror motion can realize the variation of laser focus point height (Z axle) cooperating the motion of X, Y galvanometer can realize the mark of non-planar surfaces (as the step surface or the curved surface of workpiece); Fast 2 more than the order of magnitude of control zoom eyeglass motions than the control workpiece motion s, so this laser marking machine can promote the efficient of workpiece non-planar surfaces mark greatly.
Description of drawings
Fig. 1 is the laser marking machine structural representation (tag plane) that prior art provides;
Fig. 2 is the laser marking machine structural representation (mark step surface) that prior art provides;
Fig. 3 is the laser marking machine structural representation that first embodiment of the invention provides;
Fig. 4 is the laser marking machine structural representation that second embodiment of the invention provides.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Embodiment one
As shown in Figure 3, the laser marking machine that present embodiment provided comprises laser instrument 11, beam expanding lens 12, zoom lens set, scanning galvanometer group 13 and flat field focus lamp 14.The laser that described laser instrument 11 sends through described zoom lens set zoom, enters described scanning galvanometer group 13 after described beam expanding lens 12 expands bundle, project surface of the work after described flat field focus lamp 14 focuses on.The lens set of zoom described in the present embodiment by concavees lens 14 and with described concavees lens distance be d 1Convex lens 15 constitute; Described scanning galvanometer group 13 is an XY scanning galvanometer group; Described flat field focus lamp 14 is a F-Theta flat field focus lamp.
According to geometric optics, after 15 two eyeglass combinations of described concavees lens 14 and convex lens, the formula of its combined focal length f ' is as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 1 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of convex lens.
From the focal length of the described as can be seen zoom lens set of above formula along with d 1Change and change, thereby change the height of flat field focus lamp 14 focal beam spots.Present embodiment cooperates laser marking software, input non-planar surfaces (as the step surface or the curved surface of workpiece) three-dimensional coordinate function, utilize the described concavees lens 14 of Electric Machine Control or and convex lens 15 motion can realize the variation of laser focus point height (Z axle) cooperating the motion of X, Y galvanometer can realize the mark of non-planar surfaces (as the step surface or the curved surface of workpiece); Fast 2 more than the order of magnitude of control zoom eyeglass motions than the control workpiece motion s, so this laser marking machine can promote the efficient of workpiece non-planar surfaces mark greatly.
Embodiment two
As shown in Figure 4, the laser marking machine that present embodiment provided comprises laser instrument 11, beam expanding lens 12, zoom lens set, scanning galvanometer group 13 and flat field focus lamp 14.The laser that described laser instrument 11 sends through described zoom lens set zoom, enters described scanning galvanometer group 13 after described beam expanding lens 12 expands bundle, project surface of the work after described flat field focus lamp 14 focuses on.The lens set of zoom described in the present embodiment by concavees lens 17, with described concavees lens distance be d 2 Concave mirror 18 and the speculum 19 that changes described concave mirror 18 output directions of light constitute; Described scanning galvanometer group 13 is an XY scanning galvanometer group; Described flat field focus lamp 14 is a F-Theta flat field focus lamp.Described speculum 19 laser light reflected enter described scanning galvanometer group 13.
According to geometric optics, after 18 two eyeglass combinations of described concavees lens 17 and concave mirror, the formula of its combined focal length f ' is as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 2 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of concave mirror.
From the focal length of the described as can be seen zoom lens set of above formula along with d 2Change and change, thereby change the height of flat field focus lamp 14 focal beam spots.Present embodiment cooperates laser marking software, input non-planar surfaces (as the step surface or the curved surface of workpiece) three-dimensional coordinate function, utilize the described concavees lens 17 of Electric Machine Control or and concave mirror 18 motion can realize the variation of laser focus point height (Z axle) cooperating the motion of X, Y galvanometer can realize the mark of non-planar surfaces (as the step surface or the curved surface of workpiece); Fast 2 more than the order of magnitude of control zoom eyeglass motions than the control workpiece motion s, so this laser marking machine can promote the efficient of workpiece non-planar surfaces mark greatly.
The above only is preferred embodiment of the present invention; not in order to restriction the present invention; all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc.; as with as described in the zoom lens set place as described in laser instrument and as described between the beam expanding lens, all should be included within protection scope of the present invention.

Claims (10)

1. laser marking machine, comprise: laser instrument, beam expanding lens, scanning galvanometer group and flat field focus lamp, the laser that described laser instrument sends is after described beam expanding lens expands bundle, enter described scanning galvanometer group, after focusing on, described flat field focus lamp projects surface of the work again, it is characterized in that, establish the zoom lens set on the transmission light path of described laser.
2. laser marking machine as claimed in claim 1 is characterized in that, described zoom eyeglass be mounted between described laser instrument and the described beam expanding lens or described beam expanding lens and described scanning galvanometer group between.
3. laser marking machine as claimed in claim 1 or 2 is characterized in that, described zoom lens set by concavees lens and with described concavees lens distance be d 1Convex lens constitute, the focal distance f of described zoom lens set ' formula as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 1 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of convex lens.
4. laser marking machine as claimed in claim 1 or 2 is characterized in that, described zoom lens set by concavees lens and with described concavees lens distance be d 2Concave mirror constitute, the focal distance f of described zoom lens set ' formula as follows:
f ′ = f 1 ′ × f 2 ′ f 1 ′ + f 2 ′ - d 2 , Wherein, f 1' be picture side's focal length of concavees lens, f 2' be picture side's focal length of concave mirror.
5. laser marking machine as claimed in claim 4 is characterized in that, establishes the speculum that changes its transmission direction on the described concave mirror output light path, and the laser of described mirror reflects enters described scanning galvanometer group.
6. laser marking machine as claimed in claim 3 is characterized in that, described concavees lens or and convex lens by Electric Machine Control, cooperate the motion of described scanning galvanometer group.
7. laser marking machine as claimed in claim 4 is characterized in that, described concavees lens or and concave mirror by Electric Machine Control, cooperate the motion of described scanning galvanometer group.
8. laser marking machine as claimed in claim 1 is characterized in that, described scanning galvanometer group is an XY scanning galvanometer group, and described flat field focus lamp is a F-Theta flat field focus lamp.
9. laser marking machine as claimed in claim 6 is characterized in that, described laser marking machine cooperates laser marking software, input non-planar surfaces three-dimensional coordinate function.
10. laser marking machine as claimed in claim 7 is characterized in that, described laser marking machine cooperates laser marking software, input non-planar surfaces three-dimensional coordinate function.
CN2009101885726A 2009-11-28 2009-11-28 Laser marking machine Pending CN102079176A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072383A (en) * 2011-10-26 2013-05-01 深圳市大族激光科技股份有限公司 Galvanometric laser marking machine and marking control card thereof
CN103328224A (en) * 2012-03-22 2013-09-25 深圳市杰普特电子技术有限公司 Pulse optical fiber laser marking system
CN103350281A (en) * 2013-06-20 2013-10-16 深圳市大族激光科技股份有限公司 Automatic focusing device and automatic focusing method for laser marking machine
CN105301768A (en) * 2015-11-24 2016-02-03 深圳先进技术研究院 Galvanometer laser scanning system
CN105478767A (en) * 2015-12-30 2016-04-13 广州瑞通激光科技有限公司 Device and method for obtaining metal dental prosthesis through laser 3D printing
CN106218232A (en) * 2016-08-31 2016-12-14 广州创乐激光设备有限公司 A kind of varifocal laser marking optical system
CN106338499A (en) * 2016-08-31 2017-01-18 徐金杰 Element laser detection and analysis instrument and mineral element analysis method
CN106773025A (en) * 2015-11-24 2017-05-31 深圳先进技术研究院 Focusing lens and lens vibrating type laser scanning system
CN107052570A (en) * 2017-01-03 2017-08-18 武汉光谷航天三江激光产业技术研究院有限公司 A kind of laser precision machining device
CN107309223A (en) * 2017-08-25 2017-11-03 济南高能清扬激光清洗有限公司 A kind of autozoom laser cleaning head device and its cleaning method
CN108169870A (en) * 2017-12-28 2018-06-15 江苏金海创科技有限公司 Prefocusing auto-focusing galvanometer and prefocusing Atomatic focusing method
CN108296641A (en) * 2017-12-29 2018-07-20 大族激光科技产业集团股份有限公司 A method of laser machining superfine small characters in sim card slot narrow side
CN110449733A (en) * 2018-05-07 2019-11-15 大族激光科技产业集团股份有限公司 A kind of laser processing of laser-processing system and adjustable line width
CN111168234A (en) * 2018-11-11 2020-05-19 上海三克激光科技有限公司 Light beam shaping system and method
CN111624725A (en) * 2020-04-22 2020-09-04 大族激光科技产业集团股份有限公司 System for realizing zooming and light path shaping
CN113263265A (en) * 2021-05-20 2021-08-17 陈旭 Device for etching optical lenses
CN113351996A (en) * 2021-06-16 2021-09-07 深圳信息职业技术学院 Laser polishing and surface modification equipment

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072383A (en) * 2011-10-26 2013-05-01 深圳市大族激光科技股份有限公司 Galvanometric laser marking machine and marking control card thereof
CN103072383B (en) * 2011-10-26 2015-08-05 大族激光科技产业集团股份有限公司 A kind of Mirror Laser-mark machine and mark control card thereof
CN103328224A (en) * 2012-03-22 2013-09-25 深圳市杰普特电子技术有限公司 Pulse optical fiber laser marking system
WO2013139028A1 (en) * 2012-03-22 2013-09-26 深圳市杰普特电子技术有限公司 Pulse optical fibre laser marking system
CN103328224B (en) * 2012-03-22 2015-11-25 深圳市杰普特电子技术有限公司 A kind of pulse optical fiber marking system
CN103350281A (en) * 2013-06-20 2013-10-16 深圳市大族激光科技股份有限公司 Automatic focusing device and automatic focusing method for laser marking machine
CN105301768A (en) * 2015-11-24 2016-02-03 深圳先进技术研究院 Galvanometer laser scanning system
CN106773025A (en) * 2015-11-24 2017-05-31 深圳先进技术研究院 Focusing lens and lens vibrating type laser scanning system
CN105301768B (en) * 2015-11-24 2018-01-09 深圳先进技术研究院 Lens vibrating type laser scanning system
CN106773025B (en) * 2015-11-24 2019-07-16 深圳先进技术研究院 Focusing lens and lens vibrating type laser scanning system
CN105478767A (en) * 2015-12-30 2016-04-13 广州瑞通激光科技有限公司 Device and method for obtaining metal dental prosthesis through laser 3D printing
CN106218232A (en) * 2016-08-31 2016-12-14 广州创乐激光设备有限公司 A kind of varifocal laser marking optical system
CN106338499A (en) * 2016-08-31 2017-01-18 徐金杰 Element laser detection and analysis instrument and mineral element analysis method
CN106218232B (en) * 2016-08-31 2018-07-31 广州创乐激光设备有限公司 A kind of varifocal laser marking optical system
CN107052570A (en) * 2017-01-03 2017-08-18 武汉光谷航天三江激光产业技术研究院有限公司 A kind of laser precision machining device
CN107309223A (en) * 2017-08-25 2017-11-03 济南高能清扬激光清洗有限公司 A kind of autozoom laser cleaning head device and its cleaning method
CN108169870A (en) * 2017-12-28 2018-06-15 江苏金海创科技有限公司 Prefocusing auto-focusing galvanometer and prefocusing Atomatic focusing method
CN108296641A (en) * 2017-12-29 2018-07-20 大族激光科技产业集团股份有限公司 A method of laser machining superfine small characters in sim card slot narrow side
CN108296641B (en) * 2017-12-29 2020-03-13 大族激光科技产业集团股份有限公司 Method for laser processing of extremely small characters on narrow side of SIM card slot
CN110449733A (en) * 2018-05-07 2019-11-15 大族激光科技产业集团股份有限公司 A kind of laser processing of laser-processing system and adjustable line width
CN110449733B (en) * 2018-05-07 2021-10-08 大族激光科技产业集团股份有限公司 Laser processing system and laser processing method capable of adjusting line width
CN111168234A (en) * 2018-11-11 2020-05-19 上海三克激光科技有限公司 Light beam shaping system and method
CN111624725A (en) * 2020-04-22 2020-09-04 大族激光科技产业集团股份有限公司 System for realizing zooming and light path shaping
CN113263265A (en) * 2021-05-20 2021-08-17 陈旭 Device for etching optical lenses
CN113351996A (en) * 2021-06-16 2021-09-07 深圳信息职业技术学院 Laser polishing and surface modification equipment

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Application publication date: 20110601