CN110653487A - Laser welding device - Google Patents
Laser welding device Download PDFInfo
- Publication number
- CN110653487A CN110653487A CN201910925437.9A CN201910925437A CN110653487A CN 110653487 A CN110653487 A CN 110653487A CN 201910925437 A CN201910925437 A CN 201910925437A CN 110653487 A CN110653487 A CN 110653487A
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- China
- Prior art keywords
- lens
- galvanometer
- laser welding
- movable seat
- mirror
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Classifications
-
- 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
- B23K26/046—Automatically focusing the laser beam
-
- 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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a laser welding device which comprises an installation component, an optical fiber connector, a single-shaft galvanometer, a focusing lens group and a driving piece, wherein the installation component comprises a fixed seat and a movable seat rotationally connected with the fixed seat, the optical fiber connector is arranged on the fixed seat, the single-shaft galvanometer comprises a galvanometer lens and a power piece driving the galvanometer lens to swing, the galvanometer lens is positioned in the movable seat, and the power piece is arranged on the movable seat. The focusing lens group is arranged in the movable seat, and the laser beam passes through the vibrating lens and the focusing lens group in sequence. The driving piece is connected with the movable seat and can drive the movable seat to rotate relative to the fixed seat. The laser welding device can enable the laser focus to realize linear motion by driving the vibrating mirror lens to swing through the power part, so that the welding requirement of a large welding seam is met. Meanwhile, the driving piece can drive the single-shaft vibrating mirror and the focusing mirror group arranged on the movable seat to rotate, so that reversing welding can be realized, and the welding requirements of welding seams in various shapes are met.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a laser welding device.
Background
The laser welding is an efficient precise welding method using a laser beam with high energy density as a heat source, and has the advantages of small heat input, large depth-to-width ratio of a welding line, easiness in automatic control and the like. However, the welding seam welded by the existing laser welding device is generally linear, and when the welding seam with a T shape, a Y shape and the like needs to be welded, the turning of the welding seam is often realized by adjusting the position of a workpiece, so that the welding process is time-consuming and labor-consuming, and the laser welding precision is also influenced.
Disclosure of Invention
The invention aims to provide a laser welding device, and aims to solve the problem that the traditional laser welding device cannot realize steering welding.
A laser welding apparatus comprising:
the mounting assembly comprises a fixed seat and a movable seat which is rotatably connected with the fixed seat;
the optical fiber connector is arranged on the fixed seat;
the single-shaft galvanometer comprises a galvanometer lens and a power part for driving the galvanometer lens to swing, the galvanometer lens is positioned in the movable seat, and the power part is arranged on the movable seat;
the focusing lens group is arranged in the movable seat, and the laser beam passes through the galvanometer lens and the focusing lens group in sequence; and
and the driving piece is connected with the movable seat and can drive the movable seat to rotate relative to the fixed seat.
In one embodiment, the laser beam focusing device further comprises a reflecting mirror, wherein the reflecting mirror is arranged in the movable seat and is used for reflecting the laser beam reflected by the galvanometer mirror to the focusing mirror group.
In one embodiment, the sliding seat includes first installation department and second installation department, one side of first installation department with the sliding seat rotates to be connected, the opposite side of first installation department with second installation department fixed connection, shake the mirror lens and the speculum is all located in the first installation department, just it is close to shake the mirror lens the fixing base, the speculum is close to the second installation department, the focusing mirror group is located in the second installation department.
In one embodiment, the optical fiber connector further comprises a collimator set, wherein the collimator set is arranged in the fixed seat and is located between the optical fiber connector and the galvanometer lens.
In one embodiment, the optical axis of the set of collimating lenses is parallel to the optical axis of the set of focusing lenses.
In one embodiment, the optical lens further comprises a protective lens, and the protective lens is arranged in the movable seat and is positioned on the light emergent side of the focusing lens group.
In one embodiment, the mounting assembly further comprises a connecting flange, and the connecting flange is arranged on the fixing seat and used for connecting an external structure.
In one embodiment, the device further comprises an adapter, wherein one end of the adapter is connected with the fixed seat, and the other end of the adapter is connected with the driving piece.
In one embodiment, the adaptor includes a first connection portion and a second connection portion, the first connection portion is connected to the driving portion, and the second connection portion is bent and extended from the first connection portion and connected to the fixing base.
In one embodiment, the adaptor further includes a spacer block connected between the fixing base and the second connecting portion to space the fixing base from the second connecting portion.
The embodiment of the invention has the following beneficial effects:
the laser welding device adopts the single-shaft vibrating mirror, and the laser focus can realize linear motion by driving the vibrating mirror lens to swing through the power part, so that the welding requirement of a large welding seam is met. Simultaneously, the driving piece can drive the sliding seat to rotate relative to the fixed seat, namely can drive the single-shaft vibrating mirror and the focusing mirror group arranged on the sliding seat to rotate, so that reversing welding can be realized, and the welding requirements of welding seams in various shapes are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a schematic view of a laser welding apparatus according to an embodiment;
FIG. 2 is a right side view of the laser welding apparatus shown in FIG. 1;
FIG. 3 is a rear view of the laser welding apparatus shown in FIG. 1;
fig. 4 is a sectional view of a partial structure of the laser welding apparatus shown in fig. 1;
fig. 5 is a sectional view from another perspective of a partial structure of the laser welding apparatus shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, 4 and 5, a laser welding apparatus according to an embodiment includes a mounting assembly 100, and an optical fiber connector 200, a collimating lens set 300, a single-axis vibrating lens 400, a reflecting lens 500, a focusing lens set 600 and a driving member 700 disposed on the mounting assembly 100, wherein the optical fiber connector 200, the collimating lens set 300, the single-axis vibrating lens 400, the reflecting lens 500 and the focusing lens set 600 are sequentially disposed along a propagation direction of a laser beam.
Specifically, please refer to fig. 2 together, the mounting assembly 100 includes a fixing base 110 and a movable base 120 rotatably connected to the fixing base 110, wherein the fixing base 110 is provided with a first cavity 112 therein, the movable base 120 is L-shaped and includes a first mounting portion 122 and a second mounting portion 124, one side of the first mounting portion 122 is rotatably connected to the movable base 120, the first mounting portion 122 is connected to the movable base 120 to form an L-shaped structure, and the other side of the first mounting portion 122 is fixedly connected to the second mounting portion 124. The first mounting portion 122 has a second cavity 1222 therein, the second mounting portion 124 has a third cavity 1242 therein, and the first cavity 112, the second cavity 1222 and the third cavity 1242 are communicated with each other.
The optical fiber connector 200 is disposed at an end of the fixing base 110 away from the first mounting portion 122, and the optical fiber connector 200 is used for connecting an optical fiber plug of a light source and detachably connected with the optical fiber plug.
The collimating lens assembly 300 is disposed in the first cavity 112, i.e. the fixing base 110. The collimating lens group 300 of the present embodiment is a transmissive structure, and the laser beam passes through the collimating lens group 300 and then becomes parallel light to be emitted. In the present embodiment, the collimating lens group 300 includes two convex lenses used in combination, and it is understood that the number of the convex lenses included in the collimating lens group 300 is not limited to two, and can be adjusted according to actual situations.
As shown in fig. 4 and 5, the single-axis galvanometer 400 includes a galvanometer lens 410 and a power piece 420, and the galvanometer lens 410 is located in the second cavity 1222, i.e., in the first mounting portion 122. The power member 420 is mounted on the first mounting portion 122, and the power member 420 is connected to the galvanometer lens 410 and can drive the galvanometer lens 410 to swing. Specifically, in the present embodiment, the galvanometer lens 410 is close to the fixed seat 110 and disposed at the light exit of the first cavity 112, and referring to fig. 2 and 4, it can be seen that the collimating lens group 300 is located between the optical fiber connector 200 and the galvanometer lens 410. After passing through the collimating lens set 300, the laser beam is incident on the galvanometer lens 410 and then reflected by the galvanometer lens 410. When the power element 420 drives the galvanometer mirror 410 to swing, the galvanometer mirror 410 changes the propagation direction of the laser beam.
Further, in the present embodiment, the power member 420 extends to the outside of the first mounting portion 122, so as to reduce the volume of the first mounting portion 122, and further reduce the space occupied by the laser welding device.
The reflector 500 is disposed in the second cavity 1222, i.e. in the first mounting portion 122, and the reflector 500 is close to the second mounting portion 124 and disposed at the light inlet of the third cavity 1242. The reflecting mirror 500 is mainly used to change the propagation direction of the laser beam, and can reflect the laser beam reflected by the galvanometer mirror 410 to the focusing mirror group 600.
It should be understood that the galvanometer mirror 410 and the reflective mirror 500 are respectively disposed at two ends of the first mounting portion 122, in other embodiments, the positions of the galvanometer mirror 410 and the reflective mirror 500 may be interchanged, that is, the reflective mirror 500 may be disposed at the light exit of the first cavity 112, the galvanometer mirror 410 is disposed at the light entrance of the third cavity 1242, and the laser beam passes through the collimating lens group 300, and then is first incident on the reflective mirror 500, and then is reflected by the reflective mirror 500 onto the galvanometer mirror 410.
The focusing lens assembly 600 is disposed in the third cavity 1242, i.e. in the second mounting portion 124. The laser beam emitted from the mirror 500 is focused by the focusing lens assembly 600 and is finally emitted to the workpiece for welding operation. The focusing lens group 600 of the present embodiment includes two convex lenses used in combination, and it can be understood that the number of the convex lenses included in the focusing lens group 600 is not limited to two, and can be adjusted according to actual situations.
In the present embodiment, the optical axis of the focusing mirror group 600 is parallel to the optical axis of the collimating mirror group 300. In other embodiments, the optical axis of the focusing lens assembly 600 may be perpendicular to the optical axis of the collimating lens assembly 300. In this case, the focusing lens group 600 may be disposed in the first mounting portion 122, and both the second mounting portion 124 and the reflecting mirror 500 may be omitted.
The focusing lens assembly 600 is usually made of zinc selenide or zinc arsenic, which is brittle and fragile, and the focusing lens assembly 600 is easily damaged by the splashed fragments generated during welding on the focusing lens assembly 600, so as to protect the focusing lens assembly 600, the laser welding apparatus of the present embodiment further includes a protection lens 800, the protection lens 800 is disposed in the third cavity 1242, i.e., in the second mounting portion 124, and is disposed on the light exit side of the focusing lens assembly 600, and the protection lens 800 can prevent the splashed fragments generated during welding on the focusing lens assembly 600.
The driving member 700 is connected to the first mounting portion 122 and can drive the first mounting portion 122 to rotate relative to the fixing base 110, that is, the driving member 700 can drive the movable base 120 to rotate relative to the fixing base 110, and the single-axis galvanometer 400, the reflecting mirror 500 and the focusing mirror group 600 are all disposed on the movable base 120, so that the driving member 700 drives the movable base 120 to rotate and simultaneously drives the single-axis galvanometer 400, the reflecting mirror 500 and the focusing mirror group 600 to rotate together. Moreover, in the present embodiment, the driving member 700 can drive the movable seat 120 to rotate 0 ° to 90 ° relative to the fixed seat 110.
For the laser welding device of the present embodiment, the power component 420 drives the galvanometer lens 410 to swing, so that the laser focus can realize linear motion, thereby meeting the welding requirement of a large weld joint with a diameter of more than 1 mm. Meanwhile, the driving member 700 drives the single-axis galvanometer 400, the reflecting mirror 500 and the focusing mirror group 600 to rotate together, and deflection in the laser welding direction can be realized, so that the welding requirements of welding seams in various shapes such as T-shaped welding seams, Y-shaped welding seams and the like are met.
As shown in fig. 3 and 5, the laser welding apparatus further includes an adaptor 900, one end of the adaptor 900 is connected to the fixing base 110, and the other end is connected to the driving member 700. Specifically, the adaptor 900 includes a first connection portion 910, a second connection portion 920 and a pad 930, the first connection portion 910 is connected to the driving member 700, and the second connection portion 920 is bent and extended from the first connection portion 910 and connected to the fixing base 110. The pad 930 is connected between the fixed base 110 and the second connecting portion 920, so that the fixed base 110 and the second connecting portion 920 are spaced apart from each other, thereby preventing the movable base 120 from interfering with the adaptor 900 during rotation. It will be appreciated that in other embodiments, the driver 700 may be mounted on other external structures.
As shown in fig. 1, in the present embodiment, the mounting assembly 100 further includes a connecting flange 130, and the connecting flange 130 is disposed on the fixing base 110 and is used for connecting an external structure. The external structure may be a fixed structure or a moving mechanism, and when the connecting flange 130 is connected to the moving mechanism, the moving mechanism may move the laser welding device to change the position of the laser welding device relative to the workpiece.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A laser welding apparatus, comprising:
the mounting assembly comprises a fixed seat and a movable seat which is rotatably connected with the fixed seat;
the optical fiber connector is arranged on the fixed seat;
the single-shaft galvanometer comprises a galvanometer lens and a power part for driving the galvanometer lens to swing, the galvanometer lens is positioned in the movable seat, and the power part is arranged on the movable seat;
the focusing lens group is arranged in the movable seat, and the laser beam passes through the galvanometer lens and the focusing lens group in sequence; and
and the driving piece is connected with the movable seat and can drive the movable seat to rotate relative to the fixed seat.
2. The laser welding apparatus according to claim 1, further comprising a reflecting mirror disposed in the movable base and configured to reflect the laser beam reflected by the galvanometer mirror to the focusing mirror group.
3. The laser welding device of claim 2, characterized in that, the sliding seat includes first installation department and second installation department, one side of first installation department with the sliding seat rotates to be connected, the opposite side of first installation department with second installation department fixed connection, the mirror lens that shakes reaches the speculum all locates in the first installation department, just the mirror lens that shakes is close to the fixing base, the speculum is close to the second installation department, the focusing mirror group is located in the second installation department.
4. The laser welding device according to claim 1, further comprising a collimator set disposed in the fixing base and between the optical fiber connector and the galvanometer lens.
5. The laser welding device of claim 4, wherein an optical axis of the set of collimating lenses is parallel to an optical axis of the set of focusing lenses.
6. The laser welding device according to claim 1, further comprising a protective lens disposed in the movable base and located on a light exit side of the focusing lens group.
7. The laser welding apparatus as recited in claim 1, wherein the mounting assembly further comprises a coupling flange disposed on the holder and adapted to couple to an external structure.
8. The laser welding apparatus as claimed in claim 1, further comprising an adapter, one end of which is connected to the fixing base and the other end of which is connected to the driving member.
9. The laser welding device according to claim 8, wherein the adaptor includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the driving member, and the second connecting portion extends from the first connecting portion and is connected to the fixing base.
10. The laser welding apparatus of claim 9, wherein the adapter further comprises a spacer block coupled between the holder and the second coupling portion to space the holder from the second coupling portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925437.9A CN110653487A (en) | 2019-09-27 | 2019-09-27 | Laser welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925437.9A CN110653487A (en) | 2019-09-27 | 2019-09-27 | Laser welding device |
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| Publication Number | Publication Date |
|---|---|
| CN110653487A true CN110653487A (en) | 2020-01-07 |
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| CN201910925437.9A Pending CN110653487A (en) | 2019-09-27 | 2019-09-27 | Laser welding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789168A (en) * | 2021-01-25 | 2022-07-26 | 大族激光科技产业集团股份有限公司 | Laser cleaning system and cleaning method |
| CN115255652A (en) * | 2022-09-05 | 2022-11-01 | 深圳市智鼎自动化技术有限公司 | Multi-angle laser emission self-adaptive control method and device for laser engraving machine |
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| CN104874920A (en) * | 2015-03-24 | 2015-09-02 | 苏州领创激光科技有限公司 | Laser three-dimensional cutter |
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| CN208437821U (en) * | 2018-07-09 | 2019-01-29 | 深圳市奥华激光科技有限公司 | A kind of optical fiber sequential welding swing plumb joint |
| CN109290677A (en) * | 2018-10-16 | 2019-02-01 | 深圳市万顺兴科技有限公司 | Laser welding head device and laser soldering device |
| CN110153559A (en) * | 2019-06-20 | 2019-08-23 | 厦门市三熠智能科技有限公司 | A kind of rotary laser plumb joint |
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2019
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|---|---|---|---|---|
| EP0835714A1 (en) * | 1996-10-09 | 1998-04-15 | LVD Company NV | Laser focusing unit for laser beam devices |
| DE202006015539U1 (en) * | 2006-10-07 | 2006-12-28 | Sitec Industrietechnologie Gmbh | Laser processing head e.g. for solid-state laser beam source, has work-holder arranged on deflection mirror unit orthogonally to A-axis |
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Cited By (3)
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| CN114789168A (en) * | 2021-01-25 | 2022-07-26 | 大族激光科技产业集团股份有限公司 | Laser cleaning system and cleaning method |
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| CN115255652A (en) * | 2022-09-05 | 2022-11-01 | 深圳市智鼎自动化技术有限公司 | Multi-angle laser emission self-adaptive control method and device for laser engraving machine |
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