CN214212591U - Laser welding device - Google Patents
Laser welding device Download PDFInfo
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- CN214212591U CN214212591U CN202023161676.9U CN202023161676U CN214212591U CN 214212591 U CN214212591 U CN 214212591U CN 202023161676 U CN202023161676 U CN 202023161676U CN 214212591 U CN214212591 U CN 214212591U
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Abstract
The utility model discloses a laser welding device, including the OCT system, laser-beam welding machine and beam combining device, the output of OCT system and laser-beam welding machine's output all are connected with beam combining device's input, beam combining device's output is equipped with output fiber, output fiber includes first fibre core, the cover is located the second fibre core of first fibre core and the cladding of cladding second fibre core, first fibre core is single mode fibre core, the second fibre core is multimode fibre core or large mode field fibre core, the OCT system is equipped with mutual signal connection's detector and first controller, first controller can carry out the analysis to the signal that the detector surveyed, the laser-beam welding machine is equipped with the second controller, first controller and second controller signal connection. The same output optical fiber is shared, welding and detection synchronism are guaranteed, the OCT system can feed back a detection result to the second controller through the first controller, and the second controller can control related parameters of laser according to the detection result, so that welding quality is improved.
Description
Technical Field
The utility model relates to the field of welding technique, especially, relate to a laser welding device.
Background
In laser welding, high-energy laser pulses are used for locally heating materials in micro-areas, energy radiated by laser is diffused into the materials through heat conduction, and the materials are melted to form a specific molten pool. The laser is more and more commonly used due to the reasons of high depth-to-width ratio, small weld width, small heat affected zone, small deformation, high welding speed and the like, and is one of the important applications of the laser in the aspect of processing technology. However, in the current laser welding, generally, after the welding work is completed or partially completed, the overall welding quality is checked, and there is no strict monitoring means for monitoring the welding quality in the welding process, so that there is no way to flexibly adjust relevant parameters (such as power, light spot, defocusing amount, welding speed, and the like) of the laser welding system during welding, thereby resulting in increased defective rate and wasted welding time.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a laser welding device, it can detect welding quality in the welded.
The utility model provides a technical scheme that its technical problem adopted does:
a laser welding device comprises an OCT system, a laser welding machine and a beam combining device, wherein an input/output end of the OCT system and an output end of the laser welding machine are connected with an input end of the beam combining device, an output optical fiber is arranged at an output end of the beam combining device and used for transmitting signal light input/output by the OCT system and laser output by the laser welding machine, the output optical fiber comprises a central first fiber core, a second fiber core sleeved on the first fiber core and a cladding covering the second fiber core, the first fiber core is a single-mode fiber core, the second fiber core is a multi-mode fiber core or a large-mode fiber core, the OCT system is provided with a detector and a first controller which are in signal connection with each other, the first controller can analyze signals detected by the detector, the laser welding machine is provided with a second controller, and the second controller can control relevant parameters of the laser welding machine, the first controller is in signal connection with the second controller.
As an improvement of the above technical solution, a welding head is arranged at an output end of the output optical fiber, and the welding head is used for transmitting signal light input/output by the OCT system and laser output by the laser welding machine.
As an improvement of the above technical scheme, the laser welding machine includes a base and a hydraulic cylinder vertically arranged on the base, a support arm is arranged at the upper end of the hydraulic cylinder, a welding machine main body is arranged on the support arm, the beam combining device is arranged at the lower end of the welding machine main body, the welding machine main body is connected with an inlet of the beam combining device through a second optical fiber, the second optical fiber is used for transmitting laser output by the laser welding machine, the welding head is arranged at the lower end of the beam combining device, a workbench is arranged on the base and located below the welding machine main body, and the workbench can move left and right in the front-back direction.
As an improvement of the above technical solution, the OCT system further includes a light source, the detector, a first fiber coupler, a reference arm, and a first optical fiber, one end of the first fiber coupler is connected to the light source and the detector, the other end of the first fiber coupler is connected to the reference arm and the first optical fiber, the first optical fiber is connected to an inlet of the beam combining device, and the first optical fiber is used for transmitting signal light input/output by the OCT system.
As an improvement of the technical scheme, the beam combining device is manufactured in a fused biconical taper mode.
As an improvement of the above technical solution, the second core is a large mode field core, and the first core is coaxial with the second core.
As an improvement of the above technical solution, the cladding includes an inner cladding that wraps the second core and an outer cladding that wraps the inner cladding, and the outer cladding is a single-layer coating layer or a multi-layer coating layer.
The utility model discloses following beneficial effect has:
according to one aspect of the disclosure, the laser welding device is provided with an OCT system, the OCT system can detect a welding position in the welding process, and a signal light output by the OCT system and a laser output by a laser welding machine are output through the same output optical fiber, so that the welding quality can be detected in real time during welding, the OCT system can feed a detection result back to a second controller of the laser welding machine through a first controller, the laser welding machine can control relevant parameters of the output laser according to the detection result, the welding quality is improved, and the feedback and control processes are realized through the first controller and the second controller; the central authorities of output fiber are single mode fiber core, what single mode fiber core's outside cover was established is multimode fiber core or big mode field fiber core, this kind of structure has guaranteed that the signal light of OCT system output transmits in the single mode fiber core of little core footpath, and powerful laser can transmit in multimode fiber core or big mode field fiber core, thereby make this two way light of signal light and laser can share an optic fibre, also be the same output fiber of laser welding and OCT detection sharing, the structure is greatly simplified, welding and detection synchronism have been guaranteed, the welding quality is improved.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a schematic system structure diagram of one embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an output fiber according to one embodiment of the present invention;
fig. 3 is a schematic structural diagram of a laser welding machine according to one embodiment of the present invention.
Detailed Description
Referring to fig. 1 and 2, the present invention discloses a laser welding device, including an OCT system 1, a laser welding machine 2, and a beam combining device 3, wherein an input/output end of the OCT system 1 and an output end of the laser welding machine 2 are both connected to an input end of the beam combining device 3, an output end of the beam combining device 3 is provided with an output optical fiber 4, the output optical fiber 4 is used for transmitting a signal light input/output by the OCT system 1 and a laser output by the laser welding machine 2, the output optical fiber 4 includes a central first fiber core 41, a second fiber core 42 sleeved on the first fiber core 41, and a cladding 43 cladding the second fiber core 42, the first fiber core 41 is a single-mode fiber core, the second fiber core 42 is a multi-mode fiber core or a large mode fiber core, the OCT system 1 is provided with a detector 12 and a first controller connected by a line signal, the first controller can analyze a signal detected by the detector 12, the laser welding machine 2 is provided with a second controller, the second controller can control relevant parameters of the laser welding machine 2, such as power, light spots, defocusing amount, welding speed and the like, and the first controller is in signal connection with the second controller through a data line.
Specifically, the laser welding device is provided with an OCT system 1, the OCT system 1 can detect a welding position in the welding process, and a signal light output by the OCT system 1 and a laser output by a laser welding machine 2 are output through the same output optical fiber 4, so that the welding quality can be detected in real time during welding, the OCT system 1 can feed a detection result back to a second controller of the laser welding machine 2 through a first controller, the second controller can control relevant parameters of the output laser according to the detection result, the welding quality is improved, and the feedback and control processes are realized through the first controller and the second controller; the central authorities of output fiber 4 are single mode fiber core, what single mode fiber core's outside cover was established is multimode fiber core or big mode field fiber core, this kind of structure has guaranteed that the signal light of OCT system 1 output transmits in the single mode fiber core of little core footpath, and powerful laser can transmit in multimode fiber core or big mode field fiber core, thereby make signal light and these two way light of laser can share an optic fibre, also be the same output fiber of laser welding and OCT detection sharing, the structure is greatly simplified, welding and detection synchronism have been guaranteed, the welding quality is improved.
Referring to fig. 3, the output end of the output optical fiber 4 is provided with a welding head 5, and the welding head 5 is used for transmitting the signal light input/output by the OCT system 1 and the laser output by the laser welding machine 2.
In this embodiment, the laser welding machine 2 includes a base 21 and a hydraulic cylinder 22 vertically arranged on the base 21, the upper end of the hydraulic cylinder 22 is provided with a support arm 23, the support arm 23 is provided with a welding machine main body 24, the beam combining device 3 is arranged at the lower end of the welding machine main body 24, the welding machine main body 24 is connected with an inlet of the beam combining device 3 through a second optical fiber 7, the second optical fiber 7 is used for transmitting laser output by the laser welding machine 2, the welding head 5 is arranged at the lower end of the beam combining device 3, the base 21 is provided with a workbench 25, the workbench 25 is positioned below the welding machine main body 24, and the workbench 25 can move back, forth, left and right. The hydraulic cylinder 22 drives the welding head 5 to move up and down, and the table 25 moves forward, backward, leftward and rightward, thereby ensuring that parts can be welded at various places.
Further, the OCT system 1 further includes a light source 11, the detector 12, a first fiber coupler 13, a reference arm 14, and a first optical fiber 6, one end of the first fiber coupler 13 is connected to the light source 11 and the detector 12, the other end of the first fiber coupler 13 is connected to the reference arm 14 and the first optical fiber 6, the first optical fiber 6 is connected to an inlet of the beam combining device 3, and the first optical fiber 6 is used for transmitting signal light input/output by the OCT system 1.
Specifically, the beam combining device 3 is manufactured in a fused biconical taper mode, so that the beam combining device can bear extremely high laser power and ensure the stability of long-term operation.
The second core 42 is a large mode field core, and the first core 41 is coaxial with the second core 42. The cladding 43 includes an inner cladding 44 covering the second core 42 and an outer cladding 45 covering the inner cladding 44, and the outer cladding 45 is a single-layer coating or a multi-layer coating.
It is noted that the terms first, second, third, etc. are used herein to describe various components or features, but these components or features are not limited by these terms. These terms are only used to distinguish one element or part from another element or part. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. For convenience of description, spatially relative terms such as "inner", "outer", "upper", "lower", "left", "right", "upper", "left", "right", and the like are used herein to describe the orientation relation of the components or parts in the present embodiment, but these spatially relative terms do not limit the orientation of the technical features in practical use.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (7)
1. A laser welding device characterized in that: the optical fiber OCT system comprises an OCT system (1), a laser welding machine (2) and a beam combining device (3), wherein the input/output end of the OCT system (1) and the output end of the laser welding machine (2) are connected with the input end of the beam combining device (3), an output optical fiber (4) is arranged at the output end of the beam combining device (3), the output optical fiber (4) is used for transmitting signal light input/output by the OCT system (1) and laser output by the laser welding machine (2), the output optical fiber (4) comprises a central first fiber core (41), a second fiber core (42) sleeved on the first fiber core (41) and a cladding (43) cladding the second fiber core (42), the first fiber core (41) is a single-mode fiber core, the second fiber core (42) is a multimode fiber core or a large-mode fiber core, and the OCT system (1) is provided with a detector (12) and a first controller which are connected with each other through signals, the first controller can analyze signals detected by the detector (12), the laser welding machine (2) is provided with a second controller, the second controller can control relevant parameters of the laser welding machine (2), and the first controller is in signal connection with the second controller.
2. The laser welding apparatus according to claim 1, characterized in that: the output end of the output optical fiber (4) is provided with a welding head (5), and the welding head (5) is used for transmitting signal light input/output by the OCT system (1) and laser output by the laser welding machine (2).
3. The laser welding apparatus according to claim 2, characterized in that: laser-beam welding machine (2) include base (21) and locate hydraulic cylinder (22) of base (21) vertically, the upper end of hydraulic cylinder (22) is equipped with support arm (23), be equipped with welding machine main part (24) on support arm (23), the lower extreme of welding machine main part (24) is located in beam combining device (3), welding machine main part (24) are through the entry linkage of second optic fibre (7) and beam combining device (3), second optic fibre (7) are used for transmitting the laser of laser-beam welding machine (2) output, the lower extreme of beam combining device (3) is located in soldered connection (5), be equipped with workstation (25) on base (21), workstation (25) are located the below of welding machine main part (24), control about workstation (25) can be around.
4. The laser welding apparatus according to claim 3, characterized in that: the OCT system (1) further comprises a light source (11), the detector (12), a first optical fiber coupler (13), a reference arm (14) and a first optical fiber (6), one end of the first optical fiber coupler (13) is connected with the light source (11) and the detector (12), the other end of the first optical fiber coupler (13) is connected with the reference arm (14) and the first optical fiber (6), the first optical fiber (6) is connected with an inlet of the beam combining device (3), and the first optical fiber (6) is used for transmitting signal light input/output by the OCT system (1).
5. The laser welding apparatus according to claim 4, characterized in that: the beam combining device (3) is manufactured in a fused biconical taper mode.
6. The laser welding apparatus according to claim 1, characterized in that: the second fiber core (42) is a large mode field fiber core, and the first fiber core (41) and the second fiber core (42) are coaxial.
7. The laser welding apparatus according to claim 1 or 6, characterized in that: the cladding (43) comprises an inner cladding (44) covering the second core (42) and an outer cladding (45) covering the inner cladding (44), and the outer cladding (45) is a single-layer coating layer or a multi-layer coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023161676.9U CN214212591U (en) | 2020-12-23 | 2020-12-23 | Laser welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023161676.9U CN214212591U (en) | 2020-12-23 | 2020-12-23 | Laser welding device |
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| CN214212591U true CN214212591U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023161676.9U Active CN214212591U (en) | 2020-12-23 | 2020-12-23 | Laser welding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871539A (en) * | 2024-03-12 | 2024-04-12 | 光越科技(深圳)有限公司 | Laser welding quality detection system and method based on optical coherence tomography |
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2020
- 2020-12-23 CN CN202023161676.9U patent/CN214212591U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871539A (en) * | 2024-03-12 | 2024-04-12 | 光越科技(深圳)有限公司 | Laser welding quality detection system and method based on optical coherence tomography |
| CN117871539B (en) * | 2024-03-12 | 2024-05-17 | 光越科技(深圳)有限公司 | Laser welding quality detection system and method based on optical coherence tomography |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220907 Address after: Room 704, Building 7, Haitian Pavilion, No. 333, Jintang Road, Tangjia, High-tech Zone, Zhuhai City, Guangdong Province, 519000 Patentee after: Zhuhai Jiguang Technology Co.,Ltd. Address before: 704, building 7, Haitian Pavilion, Haiyi Bay, Tangjiawan, Zhuhai, Guangdong 519000 Patentee before: Liu Xia |
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| TR01 | Transfer of patent right |