CN104527232A - Controllable distance indication method and device of 3D laser marking machine - Google Patents
Controllable distance indication method and device of 3D laser marking machine Download PDFInfo
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- CN104527232A CN104527232A CN201410757120.6A CN201410757120A CN104527232A CN 104527232 A CN104527232 A CN 104527232A CN 201410757120 A CN201410757120 A CN 201410757120A CN 104527232 A CN104527232 A CN 104527232A
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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
- 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
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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
- B41J2/447—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 arrays of radiation sources
- B41J2/45—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 arrays of radiation sources using light-emitting diode [LED] or laser arrays
- B41J2/451—Special optical means therefor, e.g. lenses, mirrors, focusing means
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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
- B23K26/36—Removing material
- B23K26/361—Removing material for deburring or mechanical trimming
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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
-
- 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
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
Abstract
The invention discloses a controllable distance indication method and device of a 3D laser marking machine. The controllable distance indication device comprises a first visible light indicator, a second visible light indicator and a control unit. The first visible light indicator can emit a first visible light beam to a marking area. A reflection device is arranged in the light path of the second visible light indicator and used for reflecting a second visible light beam, and after the second visible light beam is reflected, the second visible light beam and the first visible light beam converge in the marking area. The control unit controls the deflection angle of the reflection device so that the convergence point of the first visible light beam and the second visible light beam can correspond to the initial focal point of the 3D laser marking machine. The initial focal distance of the laser marking machine is displayed by controlling convergence of the visible light beams, and the controllable distance indication device can carry out focusing automatically and complete indication of the initial focal distance accurately and rapidly.
Description
Technical field
The present invention relates to laser marking field, be specifically related to a kind of to object dimensional surface carry out laser marking controllable distance indicating means and application the method controllable distance indicating device.
Background technology
Laser marking machine (laser marking machine) utilizes laser beam to stamp the technology of permanent marks at material surface.This technology produces laser beam by laser instrument, through a series of optic delivery and process, carries out light beam focusing eventually through optical mirror slip, then by the assigned address of the high-energy light beam steering after focusing to body surface to be processed.Laser marking machine can mark various word, symbol and pattern, and market application foreground is wide.
Traditional laser marking machine only carries out mark on two dimensional surface.When mark, because laser beam is non-visible, in order to judge whether mark object is positioned in laser marking region (location) and focus (focusing), generally by the distance between ruler measurement mark plane and field lens, or mark is in advance to judge whether in focus on check-out console, these conventional method need repetitive measurement, and efficiency is very low.Improve as one, existing two-dimensional laser marking machine adds ruddiness indicator and positions and focus.Utilize ruddiness to replace sightless laser, play the preview of mark location and focus effect.Specifically can see the automatic focusing mechanism of a kind of marking machine disclosed in patent document CN201446774U.The program is respectively arranged with cross red emitter in the both sides of scanning means, and the crosspoint of cross ruddiness that the cross red emitter on both sides sends overlaps with the focus of laser.In use, adjustment makes to treat a ruddiness crosspoint appears in mark object, can ensure that mark object is positioned in the focus of laser.Focal length due to two-dimensional laser marking machine is constant, and therefore this method can greatly be increased work efficiency on conventional two dimensional surface laser marking machine.
Along with the development of technology, on three-dimensional surface, research and development point popular in industry can be become by the 3D laser marking of mark.Compared with traditional 2D laser marking, 3D laser marking machine adopts dynamic focusing seat, by software control and mobile dynamic focusing mirror, before laser is focused, carry out variable expanding, the focal length changing laser beam with this realizes focusing on processing to the exact surface of height different objects.Therefore 3D mark requires significantly to reduce to the surface smoothness of processing object, can carry out laser marking on on-plane surface.But the location of 3D laser marking machine and focus and become new problem, the focal length due to 3D laser marking machine is change, and therefore the focusing system of existing two-dimensional laser marking machine cannot meet the demands.
In 3D laser marking process, first spatial modeling carried out to the mark region of mark object and be stored in software systems, this spatial modeling can set the datum mark coordinate of any one mark object, this datum mark coordinate is also the focusing of laser, certain point on real space on corresponding mark object is as datum mark, also namely, as long as laser head accurately can be located and focus on the datum mark of object during mark, follow-up computer adjustable focal length completes the laser marking at other positions of three-dimensional surface.Problem is wherein, before mark starts, needs mark object to put on mark platform, makes the corresponding datum mark of object.But lack the structure of location, technical staff is difficult to accurately to place and the position, highly of adjustment mark object, and the mark of 3D curved surface requires very high precision, as long as the position of mark object or highly occur deviation, probably just cause the distortion of whole mark pattern.In addition, due to the complexity of three-dimensional marking body surface, require flexibility and changeability to the setting of datum mark, therefore traditional fixed focusing system cannot realize the requirement of 3D laser marking.
Summary of the invention
The object of the present invention is to provide a kind of controllable distance indicating means of 3D laser marking machine, spatially automatically can be indicated the height and position of initial focus relative with datum mark in modeling by the method in mark, thus be convenient to add the location of laying mark object man-hour.
To achieve these goals, the controllable distance indicating means of 3D laser marking machine disclosed by the invention relates to the first visible ray indicator, the second visible ray indicator and control unit; Described first visible ray indicator can send the first visible light beam to mark region; The light path of described second visible ray indicator is provided with reflection unit, the second visible light beam that this reflection unit sends to it for reflecting the second visible ray indicator; The initial focal length that described control unit is focused to datum mark according to 3D laser marking machine, the deflection angle of computational reflect device, this deflection angle makes the second visible light beam cross in mark region with the first visible light beam after by reflection unit reflection, the initial focus of the corresponding 3D laser marking machine of this joint.
Preferably, described control unit, according to triangle geometry computational methods, by the coordinate of the initial focal length of 3D laser marking machine, obtains the deflection angle of reflection unit.When finding initial mark height, the direction of the first visible light beam is determined, the height of mark is known, and the launch point of the second visible light beam is determined, according to triangle geometry computational methods, can calculate the deflection angle of reflection unit.
Preferably, the reflection unit deflection angle angle value of the different initial focal length of the correspondence obtained is stored in database, to obtain corresponding deflection angle angle value according to different initial focal length coupling when using.
Mark height can be indicated according to said method, but in practical operation, have the impact of alignment error, operate miss and circuit etc. unavoidably, the problem that the visible ray caused to overcome these errors can not accurately cross, the present invention is also by interpolation method compensating error, the deflection angle of described reflection unit is revised, two light beams can be crossed accurately, improve the efficiency of mark.
Another object of the present invention is to provide the controllable distance indicating device applying above-mentioned indicating means, this indicating device comprises the first visible ray indicator, the second visible ray indicator and control unit; Described first visible ray indicator can send the first visible light beam to mark region; The light path of described second visible ray indicator is provided with reflection unit, the second visible light beam that this reflection unit sends to it for reflecting the second visible ray indicator, described second visible light beam crosses in mark region with the first visible light beam after being reflected, described control unit controls the deflection angle of reflection unit, makes the initial focus of the corresponding 3D laser marking machine of the joint of the first visible light beam and the second visible light beam.
Reflection unit in above-mentioned indicating device comprises at least one is driven deflection reflecting optics by motor, and described motor controls by control unit the deflection angle changing reflecting optics, preferably, described reflection unit comprises the first motor-driven first reflecting optics and the second motor-driven second reflecting optics, described first reflecting optics and the second reflecting optics spatially have angle, make the second visible light beam can realize the movement of optional position in one plane after the first reflecting optics and the reflection of the second reflecting optics, when reflection unit choice for use two reflecting optics, reflection unit (i.e. the first reflecting optics and the second reflecting optics) can be X galvanometer and the Y galvanometer of labelling head inside, it is inner that 3D laser marking machine is located at by second visible ray indicator, now, the second visible light beam that second visible ray indicator sends overlaps with the laser optical path for mark, the conjunction Shu Danyuan be arranged in laser optical path by one realizes the coincidence of the second visible light beam and laser optical path, second visible ray indicator is positioned at the side of closing Shu Danyuan, the second visible light beam can be sent to this conjunction Shu Danyuan, described second visible light beam overlaps with the light path of laser after closing Shu Danyuan, and launch to X galvanometer and Y galvanometer, direct use X galvanometer and Y galvanometer control the deflection of the second visible light beam, the cost of device can be reduced, and ruddiness and sharp combiner, the accuracy of control can be improved.
When above-mentioned reflection unit is selected by the first motor-driven first reflecting optics with when being made up of the second motor-driven second reflecting optics, the preferred orientations of two light beams is: the first visible ray indicator sends the first visible light beam of inclination to mark region, described reflection unit is positioned at the top in mark region, described second visible ray indicator horizontal direction sends the second visible light beam to reflection unit, and described second visible light beam reflects the mark regional reflex of backward below through reflection unit.
Controllable distance indicating device disclosed by the invention can for being placed on the standalone module of 3D laser marking machine, or the second visible ray indicator of 3D laser marking machine and reflection unit are the build-in components of 3D laser marking machine.
First visible light beam of controllable distance indicating device disclosed by the invention can have following two kinds of modes:
First kind of way: described first visible ray indicator is fixed on the labelling head of laser marking machine, now, the direction that the first visible light beam is launched is fixed, and the angle of deflection is also determined;
The second way: the light path of described first visible ray indicator is provided with the adjusting device for reflecting the first visible light beam, described adjusting device at least comprises a reflecting optics by Electric Machine Control, the adjustable angle of this reflecting optics, for making the first visible light beam adjustable angle, to keep the joint of the first visible light beam and the second visible light beam in mark region, preferably, described adjusting device is made up of two reflecting optics, described reflecting optics makes the first visible light beam adjustable angle for reflecting the first visible light beam, the angle of the first visible light beam is regulated by adjusting device, the light beam that the error produced when can solve installation causes crosses coarse problem.
Due in use, the right position of crossover meeting point can change along with the second visible ray angle change, and there is a kind of situation, joint can shift out mark regional center position gradually, makes mark no longer convenient.And the light beam of the first visible ray indicator is variable, joint can be made again to recall to mark regional center position, thus increase convenience and the degree of accuracy of mark.
The present invention realizes the height of instruction laser marking by a fixing visible light beam and crossing of an adjustable visible light beam, again mark object is needed the intersection of mark place corresponding visible ray during mark, mark can be carried out, the focusing efficiency of 3D mark can be improved by controllable distance indicating device of the present invention and method, and more accurate relative to manual adjustments; The present invention is also provided with the adjusting device regulating fixing visible light beam deflection angle, can solve alignment error, operate light beam that not in place and circuit etc. cause and not cross problem, guarantee crossing of two visible light beams; When two reflecting optics selected by reflection unit, directly can use the X galvanometer in laser marking head and Y galvanometer, and can save corresponding motor, this structure structure is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is the operation principle example 1 of controllable distance indicating device of the present invention;
Fig. 2 is the operation principle example 2 of controllable distance indicating device of the present invention;
Fig. 3 is the operation principle example 3 of controllable distance indicating device of the present invention;
Fig. 4 is the operation principle example 4 of controllable distance indicating device of the present invention;
Fig. 5 is the overall schematic of the laser marking machine applying controllable distance indicating device of the present invention;
Fig. 6 is the laser marking machine part-structure schematic diagram from the side of the application embodiment of the present invention one;
Fig. 7 is that the laser marking machine of the application embodiment of the present invention one is from the part-structure schematic diagram viewed from another side;
Fig. 8 is the laser marking machine part-structure schematic diagram of the embodiment of the present invention one;
Fig. 9 is the principle analysis diagram of controllable distance indicating device embodiment one of the present invention;
Figure 10 is the structural representation of the laser marking machine display deviate of the embodiment of the present invention one;
Figure 11 is the principle analysis diagram of controllable distance indicating device embodiment two of the present invention;
Figure 12 is the principle analysis diagram of controllable distance indicating device embodiment three of the present invention;
Figure 13 is the principle analysis diagram of controllable distance indicating device embodiment four scheme one of the present invention;
Figure 14 is the principle analysis diagram of controllable distance indicating device embodiment four scheme two of the present invention;
Figure 15 is the analysis schematic diagram of Figure 14.
Detailed description of the invention
The invention provides a kind of controllable distance indicating means being applied to 3D laser marking machine field, this method is applied on 3D laser marking machine (focal length of laser marking machine is variable), before mark, can determine the spatial altitude of laser marking machine initial focal length easily, convenient operation personnel manually focus.
The method relates to the first visible ray indicator, the second visible ray indicator and control unit; Described first visible ray indicator can send the first visible light beam to mark region; The light path of described second visible ray indicator is provided with reflection unit, the second visible light beam that this reflection unit sends to it for reflecting the second visible ray indicator; The initial focal length that described control unit is focused to datum mark according to 3D laser marking machine, the deflection angle of computational reflect device, this deflection angle makes the second visible light beam cross in mark region with the first visible light beam after by reflection unit reflection, the initial focus of the corresponding 3D laser marking machine of this joint.
The deflection angle of above-mentioned second visible light beam realizes by the built-in database of control unit:
Before the use, by the triangle geometric calculation (space coordinates of known initial focal length in the three-dimensional model, the direction of the first visible light beam, the direction of the second visible light beam and the position of reflection unit, the deflection angle of reflection unit when the first visible light beam and the second visible light beam meet at initial focal length can be calculated by triangle method of geometry) survey calculation is carried out to the deflection angle of each mark height section correspondence, and the deflection angle of mark height section and the second visible light beam is built up a database, again this database is imported in control unit, mate according to required mark height calling data storehouse when in use, the deflection angle of the second visible light beam needing mark highly corresponding can be drawn, mark height is indicated by the first visible light beam and the second visible light beam.
Preliminary mark altitude information can be obtained by said method, but be subject to processing error in reality, installation level height, the impact of circuit impact etc. factor, need commissioning staff that the stroke of lifting is divided into multistage, measure respectively in multistage actual value Δ and theoretical value Δ ' deviation, then numerical value Input Software system is set up a database, control motor correction deviation angle by software algorithm, ensure that last two bundle visible rays converge into a bit.Below be namely carry out compensate by interpolation method, air exercise absolute altitude degree is revised, and makes mark point more accurate.
Concrete method of adjustment is: when reflection unit is adopted as the situation of two galvanometers, a reflection galvanometer is first fixed, by interpolation method adjustment another one galvanometer, if be not also worth accurately, the galvanometer of original motion is then made to fix, the original fixing galvanometer of adjustment, so circulates, until compensate to the height of the initial focal length of 3D mark.
Before the mark indicating device using this method to realize and marking machine, generally all to first correct machine, commissioning staff is first divided into multistage to lifting travel, and measure actual deviation value Δ and stripped deviation value Δ ' (Δ shown when being employing two reflection units see Figure 10) respectively to every section, then numerical value Input Software system is formed a database, the offset angle of the second visible light beam corresponding to each Δ is calculated according to interpolation algorithm, the second visible light beam is made to deflect into corresponding position, shown in database sees table.
| Section | Measured value | Theoretical value | Software algorithm draws deflection angle |
| 0-1 section | (X，Y) | (X′，Y′) | θ |
| 1-2 section | (X1，Y1) | (X1′，Y1′) | θ1 |
| 2-3 section | (X2，Y2) | (X2′，Y2′) | θ2 |
| By that analogy ... | By that analogy ... | By that analogy ... | By that analogy ... |
Above indicating means is the part in a complete 3D laser marking step, and therefore invention also discloses the marking method of the 3D laser marking machine based on above-mentioned distance indicating means, the method concrete steps are as described below:
(1) to the modeling of plan mark body surface, threedimensional model is formed;
(2) choose any point on threedimensional model as datum mark, obtain this datum mark coordinate;
(3) described datum mark is the initial focus of laser marking, obtains initial focal length according to this datum mark coordinate;
(4) according to this initial focal length, the deflection angle of reflection unit is obtained by triangle geometry computational methods;
(5) this deflection angle makes the second visible light beam cross in mark region with the first visible light beam after by reflection unit reflection, the initial focus of the corresponding 3D laser marking machine of this joint;
(6) position of corresponding datum mark on mark object is made to be positioned on the height of described joint;
(7) mark is started.
In above-mentioned steps 4, control unit is according to triangle geometry computational methods, obtain the reflection unit deflection angle angle value of corresponding different initial focal length, described deflection angle angle value is stored in database, to obtain corresponding deflection angle angle value according to different initial focal length coupling when using; And by interpolation method compensating error, described deflection angle is revised, two visible rays are crossed more accurately, improve the efficiency of mark.Described first visible light beam emission angle is fixing or adjustable; When described first visible light beam emission angle is can timing, the object that it is adjustable makes the position of joint be positioned at mark region all the time.
In order to explain the operation principle of said method, be introduced below by way of accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4.
First see accompanying drawing 1, what the reflection unit of this principle adopted is a reflecting optics, whole indicating device comprises the first visible ray indicator 110 can launching the first visible light beam 111 downwards, laterally launch the second visible ray indicator 120 of the second visible light beam 121, second visible ray indicator 120 is after reflection unit controls, downward reflection ray, the first visible light beam 111 can launched with the first visible ray indicator 110 through the second visible light beam 111 of reflection crosses (h11 and h12 two height have been shown in Fig. 1), the position of this joint can be adjusted by reflection unit, the mode of adjustment is specifically see the introduction of following the second principle.Because indicating device only adopts a reflection unit, so cost is lower, but higher for the requirement of installing, must ensure during installation that the second visible light beam 121 all the time with the first visible light beam 111 reflected from reflection unit is in the same plane, otherwise light beam cannot cross.
Can intersect in order to ensure light beam, and make device more scientific and reasonable, the present invention provides again the indicating device of the second principle, the reflection unit of this principle is by controlled and spatially have the first reflecting optics 231 of angle and the second reflecting optics 241 forms, shown in accompanying drawing 2, the controllable distance indicating device of this principle comprises launches the first downward visible light beam 211 and the first visible ray indicator 210 and the second visible ray indicator 220 of the second visible light beam 221 respectively, described second visible light beam 221 reflects through the second reflecting optics 241 again after the first reflecting optics 231 reflects, the second visible light beam 221 after reflection can cross with the first visible light beam 211.Wherein the first reflecting optics 231 and the second reflecting optics 241 control deflection respectively by the first motor 231 and the second motor 242, the deflection of two motors is regulated by control unit, thus control the deflection of the second visible light beam 221, two light beams are made to be intersected in the position (Fig. 2 middle finger shows height h21 and height h22 two points) of setting height, according to the actual requirements, difference can be obtained to cross position and different height point, the controllable distance indicating device of this principle makes the second visible light beam all can regulate in the plane of X and Y both direction, ensure that the first visible light beam and the second visible light beam intersect.
The height that the different positions that crosses is corresponding different, because 3D laser marking machine first carries out spatial modeling by software to mark object, during mark, first on mark object, select the datum mark of initial mark point as mark of an accreditation, the focal length of the laser marking that this datum mark is corresponding is initial focal length, the coordinate of any point of mark object can be obtained according to spatial modeling operator, the coordinate of therefore selected datum mark is known, the initial focal length of datum mark can be known, the angle of other first visible ray 211 is known fixed, first visible ray 211 has an intersection point on datum mark height, now, need the light of the second visible ray indicator 220 transmitting through above-mentioned intersection point, when known intersection point, the deflection angle of the light after the second reflecting optics 242 is launched can be drawn according to triangle geometric calculation, control unit controls reflection unit according to the deflection angle of light and deflects into corresponding position, after deflection, namely two light beams can cross at datum mark height and position, joint is object mark point.
Accompanying drawing 3 is also employing two Electric Machine Control beam deflections, identical with above-mentioned second principle, but the first visible ray is different with the angle of the second visible ray, makes it the light path more can mating existing laser marking machine, is convenient to realize on the basis of existing laser marking machine.The position relationship that all parts is general is shown in Fig. 3, the first visible ray indicator 210 ' in Fig. 3 is oblique installation, its first visible light beam 211 ' emitted is obliquely in directive mark region, reflection unit is positioned at the top in mark region, second visible ray indicator 220 ' launches the second visible light beam 221 ' from horizontal level, second visible light beam 221 ' reflects backward time through reflection unit and crosses with the first visible light beam 211 ', the situation that crosses of two height h21 ' and h22 ' is shown in figure, now, the reflective operation that reflection unit (comprising the first reflecting optics of the first motor 231 ' control and the second reflecting optics of the second motor 241 ' control) completes directly can be realized by the X galvanometer in laser marking machine and Y galvanometer, do not need separately to establish reflection unit, structure is simple and can save cost, this embodiment utilizes the mechanical mechanism of existing laser marking machine to improve, therefore the first visible ray indicator is inclined and mounted on labelling head, second visible light beam and laser are with restrainting, can be described in detail in the explanation of the following Fig. 5 Figure 10 of detailed description of the invention.
Accompanying drawing 4 is the another schematic diagrams optimized accompanying drawing 2 and accompanying drawing 3 indicating device, on original basis, present principles has set up adjusting device in addition, the first visible light beam 311 that first visible ray indicator 310 is launched can reflect through adjusting device, the adjustability of the first visible light beam 311 can control two light beam joints and be in a certain vertical position or its periphery, be convenient to the location of mark object, alignment, wherein adjusting device can manually regulate, also automatically can be controlled by control unit, there is shown h31 and h32 two height.
According to above-mentioned principle, the present invention devises the controllable distance indicating device of several correspondence, described controllable distance indicating device can, for being placed on the standalone module of 3D laser marking machine, also can be the build-in components adopting 3D laser marking machine original structure or improve formation on original mechanism basis.Below in conjunction with accompanying drawing, detailed introduction is done to indicating device of the present invention and the laser marking machine of applying this indicating device.
Embodiment one
The present embodiment corresponding above-mentioned second and the 3rd principle, namely the situation of two reflecting optics deflection light is adopted, see Fig. 5 to Figure 10, laser marking machine of the present invention comprises rack 9, be located at the datum plate 7 on rack 9, be located at the control unit 8 on rack 9, be vertical at the crane 6 on datum plate 7, labelling head 5, crane 6 top is provided with rotating handles 61, labelling head 5 is located on crane 6, rotate the height of the adjustable labelling head 5 of rotating handles 61, this is the method manually regulated, also automatically crane 6 can be regulated by control unit 8 in the present invention, during for mark object difference in height comparatively large (exceeding laser marking focal range), can first manually or automatically regulate the position of labelling head 5, labelling head 5 is made to be in suitable position relative to datum plate 7, when carrying out 3D laser marking, how making the focus of initial mark point (datum mark) and laser marking overlap fast and accurately is the difficult point designed now, especially for the mark of irregular 3D product, the bulk velocity of speed to laser marking of accurately focusing plays vital influence factor.
Undertaken visual by the mark focus of laser by the focusing of restrainting visible rays by two in the present embodiment, the visible ray in the present embodiment specifically uses ruddiness, and also can adopt other visible ray, the present embodiment specific embodiments is as described below.
Labelling head of the present invention comprises procapsid 511 and back casing 512, procapsid 511 is connected by before and after connecting plate 513 with back casing 512, the reflection unit changing laser and visible light beam transmission direction is provided with in procapsid 511, reflection unit comprises the first reflecting optics 232 of the first motor 231 driving and the second reflecting optics 242 of the second motor 241 driving, first reflecting optics 232 and the second reflecting optics 242 drive respectively by the first motor 231 and the second motor 241, thus the light controlling to be transmitted into two reflecting optics deflects.Procapsid 511 is connected with the first visible ray indicator 210, the first visible light beam 211 that first visible ray indicator 210 emits can (now procapsid 511 two ends place be along the X direction located at by the first visible ray indicator 210 to X-direction, namely procapsid 511 is located near front or rear end position place), also can (now procapsid 511 two ends place be along the Y direction located at by the first visible ray indicator 210 to Y-direction, namely be located near procapsid 511 left or right lateral location place), or with other modes of certain angle, the first visible light beam 211 that first visible ray indicator 210 emits is a fixing oblique light.
X galvanometer and the Y galvanometer of what the first reflecting optics 232 of this embodiment and the second reflecting optics 242 adopted is exactly laser marking machine itself, therefore do not need to arrange in addition the first reflecting optics 232 and the second reflecting optics 242 and corresponding drive motors, when realizing reflection by X galvanometer and Y galvanometer, the light path of the second visible light beam overlaps with the light path of mark laser, therefore, two kinds of methods can be adopted to realize the second visible light beam, a kind of is exactly the laser itself directly adopting laser instrument to send, now laser instrument is inherently equivalent to the second visible ray indicator, but need the laser instrument (as green (light) laser) for visible laser, and to the power of laser be turned down non-mark state when indicating.Another kind is increase by second visible ray indicator, but it is convergent with laser optical path to need to close the second visible light beam of being sent by the second visible ray indicator of Shu Danyuan by one, realizes mark indicate can utilize X galvanometer and Y galvanometer.
The mode of carrying out closing bundle as employing conjunction Shu Danyuan is specific as follows:
The laser that laser instrument is launched carries out horizontal emission through piping 520, be provided with in Laser Transmission circuit way and close Shu Danyuan, close Shu Danyuan and be specially light combination mirror sheet 531 and support 530, the oblique setting of light combination mirror sheet 531 relative laser transmission direction, light combination mirror sheet 531 is supported by support 530, support 530 is connected with the second visible ray indicator 220, the second visible light beam 221 that second visible ray indicator 220 sends can through light combination mirror sheet 531, according to light combination mirror sheet 531 characteristic, laser can continue transmission through light combination mirror sheet 531 along rectilinear direction, and the second visible light beam 221 can not pass light combination mirror sheet 531, allocinesis can only be carried out, the setting of the angle of light is launched according to light combination mirror sheet 531 and the second visible ray indicator 220, the second visible light beam 221 after reflection and the laser overlap through light combination mirror sheet 531, and carry out linear transmission, until be transmitted into the first reflecting optics 232, second visible light beam 221 reflects rear sensing second reflecting optics 242, downward through the second reflecting optics 242 back reflection direction, first visible light beam 211 of also oriented mark field emission simultaneously.Control unit controls the deflection of the first motor 231 and the second motor 241, thus control the first reflecting optics 232 and the second reflecting optics 242 arrive the inflection point of specifying, reach change second visible light beam 221 (laser) transmission direction, make it crossing with the first visible light beam 211, the reflecting optics deflection angle that control unit provides, make the height of joining be namely laser marking optimum mark height.Second visible ray indicator 220 and light combination mirror sheet 531 are provided at laser instrument inside, and namely laser instrument carries visible ray indicator.
The color of visible ray is decided by the wavelength of light, and the wavelength of the appreciable light of eyes of common people is in 400 to 800 nanometers, and the laser wavelength of extreme portions is all in outside human visible range, therefore adopts the situation of closing Shu Danyuan to be applicable to most laser instrument.Now, the second visible ray indicator that one produces visible light beam must be set, but consider reflector element when will utilize the inner intrinsic X galvanometer of laser instrument and Y galvanometer effect instruction, therefore by closing Shu Danyuan by identical with laser optical path for the second visible light beam change direction, but laser optical path can not to be blocked.
Another kind of feasible scheme be directly using laser instrument itself as the second visible ray indicator, prerequisite is that laser is visible ray and laser power can be adjusted to and only indicates but not mark state.The wavelength of the laser of the laser instrument generation of green (light) laser is generally 400 to 800 nanometers, be in the visible scope of human eye, so green (light) laser can be adopted as the second visible ray indicator, when indicating controllable distance, the power of this laser instrument is set at the power rating (less relative to power during mark) during non-mark, now laser is equivalent to the second visible light beam that the second visible ray indicator sends, complete the instruction work of laser marking focus, the second visible ray indicator can be saved and close this part of Shu Danyuan, adopt the mechanism of green (light) laser simple, quick and easy for installation, but the cost of green (light) laser is higher.
Embodiment two
See accompanying drawing 11, laser in the present embodiment, the second visible light beam 321 launched by the second visible ray indicator 320, reflection unit (comprising the first speculum 332 of the first motor 331 drived control and the second speculum 342 of the second motor 341 drived control) is all identical with embodiment one, the procapsid that difference is the present embodiment is also provided with adjusting device (the 3rd reflecting optics 352 by the 3rd motor 351 drived control), the first visible light beam 311 launched by first visible ray indicator 310, first visible light beam 311 runs into the 3rd reflecting optics 352 in transmitting procedure, first visible light beam 311 is crossing with the second visible light beam 321 after the 3rd reflecting optics 352 reflects, the intersection point intersected is the operating point of laser marking optimum, the effect that the adjusting device increased plays is identical with the scheme two of following embodiment four, when highly difference is larger, the deflection of control and regulation device makes the first visible light beam 311 position move, the joint of both heights is made to be near mark regional center position, convenient location and mark, and can space be saved, Reflective regulation device in the present embodiment also can manually regulate.
Embodiment three
See accompanying drawing 12, what the present embodiment was applied is the first principle, namely only carry out primary event to the second visible light beam 121, the reflection unit in the present embodiment is different from embodiment one, and the reflection unit of the present embodiment is the first reflecting optics 132 being driven deflection by the first motor 131.
The first visible ray indicator 110 in the present embodiment and the first visible ray indicator 210 in embodiment one can be installed on procapsid in an identical manner, the first visible light beam 111 that the present embodiment first visible ray indicator 110 is launched is downward fixing light, first reflecting optics 132 controls the deflection of the second visible light beam 121 by the first motor 131, reaches the effect changing joint height; The structure of the present embodiment is simple, cost is lower, only need adopt a reflecting optics, but it is higher for the requirement of installing, because second visible light beam 121 of the present embodiment can only move along a direction, the joint of the first visible light beam 111 and the second visible light beam 121 is the operating point of laser marking, during installation, in order to make two visible light beams have joint, second visible light beam 121 that the first reflecting optics 132 must be reflected is in the same plane all the time with the first fixing visible light beam 111.Be below two kinds of mount schemes of the present embodiment:
Scheme one:
First visible ray indicator 110 is located at procapsid and (is located at the close front or rear end position place of procapsid) when the place of X-direction two ends, now the first visible light beam 111 launched along the X direction by the first visible ray indicator 110, now reflection unit adjusts the second visible light beam 121 and deflects along the X direction all the time, along with the variation of the second visible light beam 121, it is changed to some extent with the height (focus) of the joint of the first visible light beam 111, can reach the object regulating different focus respective heights.
Scheme two:
First visible ray indicator 110 is located at procapsid and (is located at the close left or right end position place of procapsid) when the place of Y-direction two ends, now the first visible light beam 111 launched along the Y direction by the first visible ray indicator 110, now reflection unit adjusts the second visible light beam 121 and deflects along the Y direction all the time, along with the variation of the second visible light beam 121, it is changed to some extent with the height (focus) of the joint of the first visible light beam 111, can reach the object regulating different focus respective heights.
No matter adopt such scheme one or scheme two, the first visible light beam 111 and the second visible light beam 121 all must be made to cross.
Embodiment four
The present embodiment provides two kinds of solutions:
Scheme one:
See Figure 13, the light path of the first visible ray indicator 110a is provided with adjusting device, adjusting device is the 3rd reflecting optics 142a controlled by the 3rd motor 141a, the first visible light beam 111a that first visible ray indicator 110a launches can through the 3rd reflecting optics 142a on the way, by controlling the 3rd reflecting optics 142a, can adjust the direction of the first visible light beam 111a, 3rd motor 141a and the 3rd reflecting optics 142a controls the first visible light beam 111a and deflects along datum plate X (or Y) direction, when discovery first visible light beam 111a and the second visible light beam 121a is not in the same plane, both cannot cross, adjust the 3rd motor 141a.
According to the concrete installation situation of the first visible ray indicator 110a and the first motor 131a, following two kinds of corresponding adjustment modes can be had:
The first: the first visible light beam 111a that the first visible ray indicator 110a launches points to X-direction, first motor 131a controls the second visible light beam 121a and moves along the X direction, now the 3rd reflecting optics 142a controls the first visible light beam 111a and deflects along the Y direction, 3rd reflecting optics 142a adjusts the first visible light beam 111a, makes the first visible light beam 111a and the second visible light beam 121a in the same plane.
The second: the first visible light beam 111a that the first visible ray indicator 110a launches points to Y-direction, first motor 131a controls the second visible light beam 121a and moves along the Y direction, now the 3rd reflecting optics 142a controls the first visible light beam 111a and deflects along the X direction, 3rd reflecting optics 142a adjusts the first visible light beam 111a, makes the first visible light beam 111a and the second visible light beam 121a in the same plane.
Scheme two:
See accompanying drawing 14, this programme is different from scheme one, on the basis of scheme one, this programme has set up the 4th reflecting optics 152b by the 4th motor 151b drived control, adjusting device comprises the 3rd reflecting optics 142b of the 3rd motor 141b driving and the 4th reflecting optics 152b of the 4th motor 151b driving, first visible light beam 111b is directive mark region after adjusting device reflection, second visible light beam 121b is directive mark region after the first reflecting optics 132b driven by the first motor 131b reflects, and intersect with the first visible light beam 111b, the present embodiment all can adjust X and Y both direction, lower for installation requirement, and, can control the position of visible light beam joint, joint is made to be in the center of datum plate, facilitate mark, see Figure 15, when needing to carry out mark at the height of h11b, joint is A, when needing to carry out mark at the height of h21b, joint is B, standoff distance L between A and B, if A point and B point be two limit or the position close to the limit time, both horizontal range L are also larger, now mark relatively far apart, if the first visible light beam 111b can adjust, making in the plane that crosses of the second height h21b is A ', intersect with A ' as long as then the second visible light beam 121b is moved to, mark now can be made to be in the center (or near) in mark region, more convenient operation also makes mark more accurate.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (16)
1. a controllable distance indicating means for 3D laser marking machine, is characterized in that, the method relates to the first visible ray indicator, the second visible ray indicator and control unit; Described first visible ray indicator can send the first visible light beam to mark region; The light path of described second visible ray indicator is provided with reflection unit, the second visible light beam that this reflection unit sends to it for reflecting the second visible ray indicator; The initial focal length that described control unit is focused to datum mark according to 3D laser marking machine, the deflection angle of computational reflect device, this deflection angle makes the second visible light beam cross in mark region with the first visible light beam after by reflection unit reflection, the initial focus of the corresponding 3D laser marking machine of this joint.
2. controllable distance indicating means according to claim 1, is characterized in that, described control unit, according to triangle geometry computational methods, by the coordinate of the initial focal length of 3D laser marking machine, obtains the deflection angle of reflection unit.
3. controllable distance indicating means according to claim 2, it is characterized in that, the reflection unit deflection angle angle value of the different initial focal length of the correspondence obtained is stored in database, to obtain corresponding deflection angle angle value according to different initial focal length coupling when using.
4. controllable distance indicating means according to claim 3, is characterized in that, by interpolation method compensating error, revises described deflection angle.
5. apply the controllable distance indicating device of claim 1 to any one of claim 4 indicating means, it is characterized in that, comprise the first visible ray indicator, the second visible ray indicator and control unit; Described first visible ray indicator can send the first visible light beam to mark region; The light path of described second visible ray indicator is provided with reflection unit, the second visible light beam that this reflection unit sends to it for reflecting the second visible ray indicator, described second visible light beam crosses in mark region with the first visible light beam after being reflected, described control unit controls the deflection angle of reflection unit, makes the initial focus of the corresponding 3D laser marking machine of the joint of the first visible light beam and the second visible light beam.
6. controllable distance indicating device according to claim 5, is characterized in that, described reflection unit comprises at least one is driven deflection reflecting optics by motor, and described motor controls by control unit the deflection angle changing reflecting optics.
7. controllable distance indicating device according to claim 6, it is characterized in that, described reflection unit comprises the first motor-driven first reflecting optics and the second motor-driven second reflecting optics, described first reflecting optics and the second reflecting optics spatially have angle, and the second visible light beam can realize the movement of optional position in one plane after the first reflecting optics and the reflection of the second reflecting optics.
8. controllable distance indicating device according to claim 7, it is characterized in that, described first visible ray indicator sends the first visible light beam of inclination to mark region, described reflection unit is positioned at the top in mark region, described second visible ray indicator horizontal direction sends the second visible light beam to reflection unit, and described second visible light beam reflects the mark regional reflex of backward below through reflection unit.
9. controllable distance indicating device according to claim 5, is characterized in that, described controllable distance indicating device is the standalone module being placed on 3D laser marking machine.
10. controllable distance indicating device according to claim 5, is characterized in that, the second visible ray indicator of described controllable distance indicating device employing 3D laser marking machine and reflection unit are the build-in components of 3D laser marking machine.
11. controllable distance indicating devices according to claim 7, is characterized in that, described reflection unit is X galvanometer and the Y galvanometer of labelling head inside, and it is inner that 3D laser marking machine is located at by described second visible ray indicator.
12. controllable distance indicating devices according to claim 11, is characterized in that, the second visible light beam that described second visible ray indicator sends overlaps with the laser optical path for mark.
13. controllable distance indicating devices according to claim 12, it is characterized in that, also comprise one and be arranged at conjunction Shu Danyuan in laser optical path, described second visible ray indicator is positioned at the side of closing Shu Danyuan, the second visible light beam can be sent to this conjunction Shu Danyuan, described second visible light beam overlaps with the light path of laser after closing Shu Danyuan, and launches to X galvanometer and Y galvanometer.
14. controllable distance indicating devices according to claim 5, is characterized in that, described first visible ray indicator is fixed on the labelling head of laser marking machine.
15. controllable distance indicating devices according to claim 5, it is characterized in that, the light path of described first visible ray indicator is provided with the adjusting device for reflecting the first visible light beam, described adjusting device at least comprises a reflecting optics by Electric Machine Control, the adjustable angle of this reflecting optics, for making the first visible light beam adjustable angle, to keep the joint of the first visible light beam and the second visible light beam in mark region.
16. controllable distance indicating devices according to claim 15, is characterized in that, described adjusting device is made up of two reflecting optics, and described reflecting optics makes the first visible light beam adjustable angle for reflecting the first visible light beam.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757120.6A CN104527232B (en) | 2014-09-30 | 2014-12-10 | The controllable distance indicating means and controllable distance instruction device of a kind of 3D laser marking machines |
| PCT/CN2015/082723 WO2016050101A1 (en) | 2014-09-30 | 2015-06-30 | Controllable distance indication method and controllable distance indication device for 3d laser marking machine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014105220949 | 2014-09-30 | ||
| CN201410522094 | 2014-09-30 | ||
| CN201410757120.6A CN104527232B (en) | 2014-09-30 | 2014-12-10 | The controllable distance indicating means and controllable distance instruction device of a kind of 3D laser marking machines |
Publications (2)
| Publication Number | Publication Date |
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| CN104527232A true CN104527232A (en) | 2015-04-22 |
| CN104527232B CN104527232B (en) | 2017-08-25 |
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|---|---|---|---|
| CN201410757120.6A Active CN104527232B (en) | 2014-09-30 | 2014-12-10 | The controllable distance indicating means and controllable distance instruction device of a kind of 3D laser marking machines |
| CN201420778287.6U Active CN204322752U (en) | 2014-09-30 | 2014-12-10 | A kind of controllable distance indicating device of 3D laser marking machine |
| CN201420779134.3U Withdrawn - After Issue CN204322753U (en) | 2014-09-30 | 2014-12-10 | A kind of 3D laser marking machine |
| CN201410758364.6A Active CN104551409B (en) | 2014-09-30 | 2014-12-10 | A kind of marking method and 3D laser marking machines indicated based on controllable distance |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420778287.6U Active CN204322752U (en) | 2014-09-30 | 2014-12-10 | A kind of controllable distance indicating device of 3D laser marking machine |
| CN201420779134.3U Withdrawn - After Issue CN204322753U (en) | 2014-09-30 | 2014-12-10 | A kind of 3D laser marking machine |
| CN201410758364.6A Active CN104551409B (en) | 2014-09-30 | 2014-12-10 | A kind of marking method and 3D laser marking machines indicated based on controllable distance |
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| WO (1) | WO2016050101A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN104527232B (en) | 2017-08-25 |
| CN104551409A (en) | 2015-04-29 |
| CN104551409B (en) | 2017-08-25 |
| CN204322752U (en) | 2015-05-13 |
| WO2016050101A1 (en) | 2016-04-07 |
| CN204322753U (en) | 2015-05-13 |
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Effective date of registration: 20171204 Address after: 510820, room 8, 105 West Ling Road, charcoal Town, Huadu District, Guangdong, Guangzhou, China Patentee after: Guangzhou new laser equipment Co., Ltd. Address before: 510405 Baiyun District, Guangdong, Guangzhou Taihe Town, village bridge, the first floor of the building on the 1st floor, No. 2 Patentee before: GUANGZHOU CHUANGLE LASER EQUIPMENT CO., LTD. |