CN109834386A - A kind of laser welding head and laser welding apparatus - Google Patents
A kind of laser welding head and laser welding apparatus Download PDFInfo
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- CN109834386A CN109834386A CN201711212220.0A CN201711212220A CN109834386A CN 109834386 A CN109834386 A CN 109834386A CN 201711212220 A CN201711212220 A CN 201711212220A CN 109834386 A CN109834386 A CN 109834386A
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- optical path
- absorption member
- laser
- magnetic absorption
- laser welding
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Abstract
The embodiment of the present invention belongs to technical field of laser welding, and being related to a kind of laser welding head and laser welding apparatus, the laser welding head includes driving assembly and optical path component；The driving component includes the rotating electric machine interconnected and the first magnetic absorption member；The optical path component includes the second magnetic absorption member, optical path-deflecting lens and the condenser lens of combination installation, and second magnetic absorption member is hollow columnar structures, and the optical path-deflecting lens are tilted relative to the condenser lens；Wherein, the optical path component is socketed with bearing along the both ends of laser optical path central axis direction, the rotary shaft of the rotating electric machine is parallel with the laser optical path central axis, the rotating electric machine drives the first magnetic absorption member rotation, further drives the optical path component to rotate integrally by the interaction of first magnetic absorption member and second magnetic absorption member.The scheme provided according to embodiments of the present invention does not need that the spiral welded to wide arc gap weld seam can be realized using galvanometer system, and structure is simply at low cost.
Description
Technical field
The embodiment of the present invention belongs to technical field of laser welding more particularly to a kind of laser welding head and uses the Laser Welding
The laser welding apparatus of connector.
Background technique
Spiral welded mode, the focal beam spot of laser are generally used for wide arc gap weld seam in technical field of laser welding
In commissure, quick agitation molten pool can effectively avoid generation bubble, and welding effect is good, then existing to realize the main of spiral welded
Mode is realized by galvanometer system, i.e., drives X, Y vibration lens low-angle high speed swinging, the coke of laser by galvanometer motor
Point hot spot cooperates the movement of welding bench and realizes spiral welded, and structure is complicated for this plumb joint, higher cost.
Summary of the invention
To solve the above-mentioned problems, the embodiment of the present invention provides a kind of novel laser welding head, to solve the prior art
Structure is complicated and problem at high cost for the used plumb joint based on galvanometer system, uses the Laser Welding further, it would be desirable to provide a kind of
The laser welding apparatus of connector.
On the one hand, the embodiment of the present invention provides a kind of laser welding head, and the laser welding head includes driving assembly and light
Road component；The driving component includes rotating electric machine, the first magnetic absorption member with the rotation axis connection of the rotating electric machine；The light
Road component includes the second magnetic absorption member, optical path-deflecting lens and the condenser lens of combination installation, and second magnetic absorption member is hollow posts
Shape structure, the optical path-deflecting lens are tilted relative to the condenser lens, plane and laser light where the condenser lens
Lu Zhizheng axis is vertical；
Wherein, collimated laser beam optical path after optical path-deflecting lens shifts, and the optical path component is before offset
The both ends of laser optical path central axis direction are respectively sleeved on first bearing and second bearing, the rotary shaft of the rotating electric machine and institute
It is parallel to state laser optical path central axis, the rotating electric machine drives the first magnetic absorption member rotation, by first magnetic absorption member with
The interaction of second magnetic absorption member further drives the optical path component to be with the laser optical path central axis before the offset
Rotary shaft rotates integrally.
Optionally, the optical path-deflecting lens and condenser lens are arranged in the inner cavity of second magnetic absorption member.
Optionally, the both ends of laser optical path central axis direction of second magnetic absorption member before the offset are socketed in respectively
In the first bearing and second bearing.
Optionally, the optical path-deflecting lens are movably arranged in the inner cavity of second magnetic absorption member, the optical path-deflecting
The angle of plane and the plane where the condenser lens where lens is adjustable.
Further, the angle α of the plane where the optical path-deflecting lens and the plane where the condenser lens and
The laser spot of the collimated laser beam meets between the offset distance r relative to the laser optical path central axis before the offset:
Wherein a is the thickness of the optical path-deflecting lens, n1It is air to the refractive index of the collimated laser beam, n2For institute
Optical path-deflecting lens are stated to the refractive index of the collimated laser beam.
Optionally, first magnetic absorption member forms pairs of magnetic pole including the flabellum portion being arranged in pairs for blade structure.
Further, pairs of magnetic pole is correspondingly arranged in second magnetic absorption member.
Optionally, first magnetic absorption member includes two pairs of magnetic poles, and second magnetic absorption member includes a pair of of magnetic pole.
Further, the laser welding head further includes protection mirror assembly, and the optical path component closes on the condenser lens
The second bearing of one end setting connect the protection mirror assembly.
On the other hand, the embodiment of the present invention also provides a kind of laser welding apparatus, including laser generator and swashs with described
The collimator assembly and above-mentioned laser welding head that optical transmitting set is connected by optical fiber, the laser welding head and the collimation
Component is connected by the first bearing.
The laser welding head and laser welding apparatus provided according to embodiments of the present invention includes optical path component and driving assembly,
It is provided with rotating electric machine and the first magnet in driving assembly, optical path-deflecting lens and the second magnetic are provided in optical path component
Iron carries out magnetic to optical path component by driving assembly while the focus for making laser deviates the laser optical path central axis before offset
Power drive cooperates the movement of welding platform so that laser optical path central axis of the focus of laser before offset moves in a circle
Spiral welded can be realized to weld seam, for this mode without galvanometer system, structure is relatively easy, and cost is relatively low, while magnetic
Power drive is contactless driving, so that friction when optical path component rotates is small, revolving speed is high, noise is small, the weldering of laser welding head
Connect more efficient, longer life expectancy.
Detailed description of the invention
It, below will be to embodiment or description of the prior art in order to illustrate more clearly of the present invention or scheme in the prior art
Needed in attached drawing make one and simple introduce, it should be apparent that, the accompanying drawings in the following description is some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of laser welding head provided in an embodiment of the present invention；
Fig. 2 is the partial sectional view of laser welding head side provided in an embodiment of the present invention；
Fig. 3 is the light path schematic diagram that laser provided in an embodiment of the present invention passes through optical path-deflecting lens and condenser lens；
Fig. 4 is the schematic diagram that driving assembly provided in an embodiment of the present invention drives optical path component rotation.
Description of symbols:
Driving assembly 10, rotating electric machine 11, the first magnetic absorption member 12, optical path component 20, the second magnetic absorption member 21, optical path-deflecting
Lens 22, condenser lens 23, first bearing 24, second bearing 25.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Unless otherwise defined, used herein
All technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.Herein
Used term, which is only for the purpose of describing specific embodiments, in the description of the invention is not intended to limit this
Invention.Description and claims of this specification and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing not
Same object, is not use to describe a particular order.In addition, term " includes " and " having " and their any deformations, it is intended that
Non-exclusive include in covering.Such as the process, method, system, product or equipment for containing a series of steps or units do not have
It is defined in listed step or unit, but optionally further comprising the step of not listing or unit, or optionally further comprising
For other intrinsic step or units of these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
The embodiment of the present invention provides a kind of laser welding head, and refering to fig. 1 to Fig. 3, the laser welding head includes driving group
Part 10 and optical path component 20；The driving component 10 includes the rotation axis connection of rotating electric machine 11 and the rotating electric machine 11
First magnetic absorption member 12；The optical path component 20 includes that the second magnetic absorption member 21, optical path-deflecting lens 22 and the focusing of combination installation are saturating
Mirror 23, second magnetic absorption member 21 are hollow columnar structures, and the optical path-deflecting lens 22 incline relative to the condenser lens 23
Tiltedly, the plane and laser optical path central axis where the condenser lens 23；In the present embodiment, the laser welding head group
After the completion of dress, the first magnetic absorption member 12 and the second magnetic absorption member 21 will flush in position,.
Further, collimated laser beam optical path after optical path-deflecting lens shifts, and the optical path component 20 is along inclined
The both ends of laser optical path central axis direction before shifting are respectively sleeved on first bearing 24 and second bearing 25, the rotating electric machine 11
Rotary shaft it is parallel with the laser optical path central axis, the rotating electric machine 11 drives first magnetic absorption member 12 to rotate, and passes through
The interaction of first magnetic absorption member 12 and second magnetic absorption member 21 further drives the optical path component 20 with described inclined
Laser optical path central axis before shifting is rotary shaft integral-rotation.
In some embodiment of the invention, the optical path-deflecting lens 22 and condenser lens 23 are arranged in second magnetic
In the inner cavity of part 21, correspondingly, the both ends of laser optical path central axis direction of second magnetic absorption member 21 before offset cover respectively
It connects in the first bearing 24 and second bearing 25.
In other of the invention embodiments, the optical path component 20 further includes installation set (not shown go out), the installation
The both ends of set are socketed the first bearing 24 and the second bearing 25, the second magnetic absorption member 21,22 and of optical path-deflecting lens respectively
Condenser lens 23 is installed in installation set, and the second magnetic absorption member 21, optical path-deflecting lens 22 and condenser lens 23 are in installation set
Set-up mode there are many:
One: the second magnetic absorption member 21 of mode, optical path-deflecting lens 22 and condenser lens 23 in installation set from top to bottom successively
Installation；
Mode two: optical path-deflecting lens 22, the second magnetic absorption member 21 and condenser lens 23 in installation set from top to bottom successively
Installation；
Mode three: installation set is covered in 21 outside of the second magnetic absorption member, and the optical path-deflecting lens 22 and condenser lens 23 are arranged
In the inner cavity of second magnetic absorption member 21；
Four: the second magnetic absorption member 21 of mode and condenser lens 23 are successively installed from top to bottom in installation set, and the optical path
Deflection lens 22 are arranged in the inner cavity of second magnetic absorption member 21.
Whether which kind of mounting means can pass through the rotation of rotation the second magnetic absorption member 21 of driving of the first magnetic absorption member 12
To drive the rotation of optical path-deflecting lens 22.
The optical path that optical path-deflecting lens 22 can be directed at collimated excitation beam beam is deflected, as shown in figure 3, the standard of certain wavelength
Optical path offsets by distance r after collimated excitation beam penetrates optical path-deflecting lens 22 at a certain angle, after focusing using condenser lens 23
Laser spot center is than the distance r of the laser optical path distortion before offset, wherein where the optical path-deflecting lens 22
The angle α of plane where plane and the condenser lens 23 and the laser spot of the collimated laser beam are relative to the offset
Meet between the offset distance r of preceding laser optical path central axis:
Wherein a is the thickness of the optical path-deflecting lens 22, n1It is air to the refractive index of the collimated laser beam, n2For
Refractive index of the optical path-deflecting lens 22 to the collimated laser beam.
For example, the wavelength through the collimated laser beam of optical path-deflecting lens 22 is 1070nm, air is 1070nm to wavelength
Laser refractive index n1≈ 1, if the material of optical path-deflecting lens 22 be quartz glass, optical path-deflecting lens 22 with a thickness of
A=5mm, angle α=45 ° of the plane where plane and the condenser lens 23 where optical path-deflecting lens 22, quartzy glass
Refractive index n of the glass to the laser that wavelength is 1070nm2≈ 1.445 can be calculated r=1.56mm by above-mentioned formula.
From the foregoing, it will be observed that the plane at 23 place of plane and the condenser lens by adjusting 22 place of optical path-deflecting lens
Angle α can adjust the offset distance r of laser spot accordingly, therefore in some embodiments, and the optical path-deflecting lens 22 are also
The mode that activity setting can be used is arranged in installation set or in the inner cavity of the second magnetic absorption member 21, so that the optical path-deflecting is saturating
The angle α of plane and the plane where the condenser lens 23 where mirror 22 is adjustable, thus the offset of adjustable laser spot
Distance r, to meet the welding of different size of weld seam.
In some embodiments of the invention, the first magnetic absorption member 12 and the second magnetic absorption member 21 are magnet of different shapes,
Described in the first magnetic absorption member 12 be that blade structure including the flabellum portion being arranged in pairs forms pairs of magnetic pole；Second magnetic
Pairs of magnetic pole is correspondingly arranged on part 21, in the present embodiment, as shown in figure 4, first magnetic absorption member 12 includes two pairs of magnetic poles,
Second magnetic absorption member 21 includes a pair of of magnetic pole.
In some embodiments of the invention, the laser welding head further includes protection mirror assembly (not shown go out), described
The second bearing 25 that optical path component 20 closes on one end setting of the condenser lens 23 connects the protection mirror assembly, uses
In protecting, condenser lens 23 is not soldered the smog generated in operation process or splashing residue pollutes.
The working principle of laser welding head provided in an embodiment of the present invention is illustrated below.
Specifically, when carrying out laser welding, the collimated laser beam beam of certain wavelength is at a certain angle again refering to Fig. 3
Distance r is offset by through optical path after optical path-deflecting lens 22, laser spot center is relatively inclined after focusing using condenser lens 23
Laser optical path distortion before shifting distance r, rotating electric machine 11 drives the rotation of the first magnetic absorption member 12, due to the first magnetic absorption member
12 and second there are magnetic force between magnetic absorption member 21, the first magnetic absorption member 12 is rotated by the second magnetic absorption member of magnetic drive 21, such as Fig. 4 institute
Show, the schematic diagram that the first magnetic absorption member of Fig. 4 12 drives the second magnetic absorption member 21 to be rotated by 90 °, wherein (A) is the second magnetic absorption member 21 in Fig. 4
State before rotation, (A) is the state after the first magnetic absorption member 12 drives the second magnetic absorption member 21 to be rotated by 90 ° in Fig. 4, by the first magnetic
Inhaling part 12 can drive the optical path-deflecting lens 22 in optical path component 20 with inclined by the rotation of the second magnetic absorption member of magnetic drive 21
Laser optical path central axis before shifting is rotary shaft high speed rotation, then the laser spot of the collimated laser beam after deviating will be around offset
Preceding laser optical path central axis moves in a circle, and when moving the workbench of clamping weldment along bead direction, final laser is burnt
Point is helix along the welding track that weld seam welds out, realizes the spiral welded to wide arc gap weld seam, and hot spot is quickly stirred and melted
Pond can effectively avoid generation bubble, and welding effect is good.
The embodiment of the present invention also provides a kind of laser welding apparatus, including laser generator (not shown) and with the laser
The collimator assembly (not shown) and above-mentioned laser welding head, the laser welding head and institute that transmitter is connected by optical fiber
Collimator assembly is stated to connect by first bearing 24.
The laser welding head and laser welding apparatus provided according to embodiments of the present invention includes optical path component 20 and driving group
Part 10 is deviateed in laser optical path by the way that optical path-deflecting lens 22 and magnet are arranged in optical path component 20 in the focus for making laser
While mandrel, magnetic drive is carried out to optical path component 20 by driving assembly 10, so that the focus of laser is in laser optical path
Mandrel moves in a circle, and cooperates the movement of welding platform that can realize spiral welded to weld seam, this mode is without galvanometer
System, structure is relatively easy, and cost is relatively low, at the same magnetic drive be contactless driving, thus the friction of optical path component 20 it is small,
Revolving speed is high, noise is small, and the welding efficiency of laser welding head is higher, longer life expectancy.
Obviously, embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments, attached
Presently preferred embodiments of the present invention is given in figure, but is not intended to limit the scope of the patents of the invention.The present invention can be with many differences
Form realize, on the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.Although the present invention is described in detail referring to the foregoing embodiments, for coming for those skilled in the art,
Can still modify to technical solution documented by aforementioned each specific embodiment, or to part of technical characteristic into
Row equivalence replacement.All equivalent structures done using description of the invention and accompanying drawing content, are directly or indirectly used in other
Relevant technical field, similarly within the invention patent protection scope.
Claims (10)
1. a kind of laser welding head, which is characterized in that the laser welding head includes driving assembly and optical path component；The driving
Component includes rotating electric machine, the first magnetic absorption member with the rotation axis connection of the rotating electric machine；The optical path component includes combination
The second magnetic absorption member, optical path-deflecting lens and the condenser lens of installation, second magnetic absorption member are hollow columnar structures, the optical path
Deflection lens are tilted relative to the condenser lens, the plane where the condenser lens and laser optical path central axis；
Wherein, collimated laser beam optical path after optical path-deflecting lens shifts, laser of the optical path component before offset
The both ends of optical path Center axis direction are respectively sleeved on first bearing and second bearing, the rotary shaft of the rotating electric machine and it is described partially
Laser optical path central axis before shifting is parallel, and the rotating electric machine drives the first magnetic absorption member rotation, passes through first magnetic
The interaction of part and second magnetic absorption member further drives the optical path component with the laser optical path center before the offset
Axis is rotary shaft integral-rotation.
2. laser welding head according to claim 1, which is characterized in that the optical path-deflecting lens and condenser lens setting
In the inner cavity of second magnetic absorption member.
3. laser welding head according to claim 2, which is characterized in that second magnetic absorption member swashing before the offset
The both ends of light optical path Center axis direction are socketed in respectively in the first bearing and second bearing.
4. laser welding head according to claim 2, which is characterized in that the optical path-deflecting lens are movably arranged on described
In the inner cavity of second magnetic absorption member, the angle of the plane where plane and the condenser lens where the optical path-deflecting lens can
It adjusts.
5. laser welding head according to claim 1, which is characterized in that plane and institute where the optical path-deflecting lens
The angle α of the plane where condenser lens and the laser spot of the collimated laser beam are stated relative to the laser light before the offset
Meet between the offset distance r of Lu Zhizheng axis:
Wherein a is the thickness of the optical path-deflecting lens, n1It is air to the refractive index of the collimated laser beam, n2For the light
Refractive index of the road deflection lens to the collimated laser beam.
6. laser welding head according to claim 1, which is characterized in that first magnetic absorption member is blade structure, including
The flabellum portion being arranged in pairs, forms pairs of magnetic pole.
7. laser welding head according to claim 4, which is characterized in that be correspondingly arranged in second magnetic absorption member pairs of
Magnetic pole.
8. laser welding head according to claim 5, which is characterized in that first magnetic absorption member includes two pairs of magnetic poles, institute
Stating the second magnetic absorption member includes a pair of of magnetic pole.
9. laser welding head according to claim 1, which is characterized in that the laser welding head further includes protection microscope group
Part, the second bearing that the optical path component closes on one end setting of the condenser lens connect the protection mirror assembly.
10. a kind of laser welding apparatus, including laser generator and the collimation group being connect with the laser emitter by optical fiber
Part, which is characterized in that the laser welding apparatus further includes the described in any item laser welding heads of claim 1 to 9, described to swash
Flush weld connector is connect with the collimator assembly by the first bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212220.0A CN109834386B (en) | 2017-11-27 | 2017-11-27 | Laser welding head and laser welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711212220.0A CN109834386B (en) | 2017-11-27 | 2017-11-27 | Laser welding head and laser welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109834386A true CN109834386A (en) | 2019-06-04 |
| CN109834386B CN109834386B (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711212220.0A Active CN109834386B (en) | 2017-11-27 | 2017-11-27 | Laser welding head and laser welding equipment |
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| Country | Link |
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| CN (1) | CN109834386B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113305427A (en) * | 2021-05-26 | 2021-08-27 | 北京航空航天大学 | Water-guided laser device |
| WO2023284538A1 (en) * | 2021-07-13 | 2023-01-19 | 岗春激光科技（江苏）有限公司 | Lens assembly and laser welding head |
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| CN1591608A (en) * | 2003-09-05 | 2005-03-09 | 上海乐金广电电子有限公司 | Ultra-small laser head multi-shaft driver using voice coil motor |
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| Publication number | Publication date |
|---|---|
| CN109834386B (en) | 2020-12-11 |
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