CN114378383B - Double-light-emitting stitch welding copper sheet and stainless steel device - Google Patents
Double-light-emitting stitch welding copper sheet and stainless steel device Download PDFInfo
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- CN114378383B CN114378383B CN202210111147.2A CN202210111147A CN114378383B CN 114378383 B CN114378383 B CN 114378383B CN 202210111147 A CN202210111147 A CN 202210111147A CN 114378383 B CN114378383 B CN 114378383B
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a device for double-light-emitting stitch welding of copper sheets and stainless steel, belongs to the technical field of laser processing, and solves the problems that double-sided stitch welding cannot be realized, welding is unstable and welding precision is low in the prior art. According to the invention, the lower stainless steel sheet is welded by the optical fiber laser welding unit with low power, the upper copper sheet is welded by the blue laser welding unit with adjustability, so that double-sided stitch welding of the copper sheet and the stainless steel sheet is realized, solder paste on a welding surface is melted and attached, the welding stability is improved, the problem of insufficient heating of a welding position due to high copper reflectivity is avoided, and the welding precision is improved.
Description
Technical Field
The invention belongs to the technical field of laser processing, and particularly relates to a device and a process for double-light-emitting stitch welding of copper sheets and stainless steel.
Background
By copper, the sheet metal that high reflection metal material such as gold constitutes, the welding requirement of thin slice or filiform work piece is higher, however when utilizing current laser instrument to weld, the fiber laser instrument can lead to welding position insufficient heating or inhomogeneous because of the high reflectivity of copper, the bonding surface tin cream is not enough to melt the laminating completely, lead to having the production in gap or hole, the welding is insecure, the blue laser instrument can be because of power is not big enough, when welding copper sheet and stainless steel pile up, the copper sheet is heated enough or blackened even, the stainless steel is heated inadequately, lead to the welding insecure, so blue light and fiber laser instrument weld again after assembling the focus, can only do the joint welding between copper and the stainless steel, can not do the pile-up stitch welding. Therefore, it is desirable to provide an apparatus that is capable of stack welding copper and stainless steel sheets.
Disclosure of Invention
The invention aims to provide a device and a process for double-light-emitting stitch welding copper sheets and stainless steel, which aim to overcome the defects in the prior art and have the advantages of double-sided stitch welding, stable welding and high welding precision.
In order to realize the technical purpose, the device and the process for stitch welding the copper sheet and the stainless steel by double light-emitting adopt the technical scheme that:
a double-light-emitting stitch welding copper sheet and stainless steel device comprises a platform, wherein the surface of the platform is connected with a clamping unit for clamping a welding part, a blue light laser welding unit opposite to the clamping unit is arranged above the clamping unit, an optical fiber laser welding unit corresponding to an excitation point of the blue light laser welding unit is arranged below the clamping unit, a CCD camera is arranged on the side part of the blue light laser welding unit, and the CCD camera is used for positioning a welding point after focusing;
the clamping unit comprises a fixed seat fixedly connected with the platform, a clamping table is arranged on the surface of the fixed seat, fixed components are oppositely arranged on two sides of the clamping table, each fixed component comprises a sliding seat capable of sliding along the surface of the fixed seat, a limiting plate abutting against the outer wall of the welding part is arranged on the inner side of the top of the sliding seat, vertical frames are arranged at two ends of the surface of the platform, a stop door arranged at the rear end of the sliding seat is arranged between the vertical frames, the stop door is connected to the surface of the platform in a sliding mode, and a gap for the welding part to move is formed between the stop doors;
the blue light laser welding unit comprises a cross beam erected at the top of a vertical frame, a moving seat is sleeved on the surface of the cross beam, a semiconductor blue light welding head is connected to the end of the moving seat, a blue light optical fiber port is inserted in the upper part of the semiconductor blue light welding head, the end of the blue light optical fiber port is opposite to the end of the semiconductor blue light welding head, and a blue light outlet opposite to the surface of a clamping table is arranged at the bottom of the semiconductor blue light welding head;
optical fiber laser welding unit, including locating the roll adjustment subassembly of platform below, locating infrared optic fibre laser heating head on the roll adjustment subassembly, arrange the light modulation pipe at infrared optic fibre laser heating head top in to one side and arrange the infrared light outlet and the infrared optic fibre mouth of light modulation pipe upper and lower extreme in respectively, the roll adjustment subassembly is including setting up the arc slide on the diapire in the platform, the slide evenly meanders under the ka tai, sliding connection has the slider in the slide, the slider tip has cup jointed downwardly extending's head rod through the spliced pole, the head rod other end articulates there is the second connecting rod, the second connecting rod upwards extends and the other end is articulated with the dead lever left end, dead lever fixed connection is in the platform bottom, in the connecting axle end card goes into infrared optic fibre laser heating head, infrared optic fibre laser heating head top is connected with the oblique light modulation pipe, the light modulation pipe top is connected with the ascending infrared light outlet of opening, and the bottom is connected with the infrared optic fibre mouth.
Preferably, the movable seat is electrically connected with a servo motor through a connecting shaft, and the servo motor drives the movable seat to move transversely along the cross beam.
Preferably, the first connecting rod penetrates through the bottom of the platform and then is connected with a sliding block arranged in the platform.
Preferably, the upper end and the lower end of the dimming tube are arranged horizontally, and the optical fiber laser protection component is arranged in the dimming tube.
Preferably, the optical fiber laser protection component comprises a refraction prism attached to the inner wall of the dimming tube and a film antireflection film arranged at the top end port of the dimming tube, a gap between the bottoms of the refraction prisms corresponds to the infrared optical fiber port, and a horizontal film reflecting film is arranged outside the refraction prism.
Preferably, the refraction prism is disposed in parallel in the light modulation tube, and forms a parallelogram with the upper and lower ports of the light modulation tube.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the lower stainless steel sheet is welded by the optical fiber laser welding unit at low power, and the upper copper sheet is welded by the blue laser welding unit in an adjustable manner, so that double-sided stitch welding of the copper sheet and the stainless steel sheet is realized, and the problems that the copper sheet and the stainless steel sheet are heated unevenly up and down and can only be connected and welded due to different welding powers in the conventional technology are solved;
2. according to the invention, the optical fiber laser welding unit is arranged at the lower part to weld the stainless steel sheet, so that the solder paste on the welding surface is melted and attached, the welding stability is improved, and meanwhile, the blue light laser welding unit is matched to weld copper, so that the problem that the welding position is not heated enough due to high copper reflectivity is avoided;
3. according to the laser welding device, the optical fiber laser welding unit accurately corresponds to the bottom of the welding part through the distance adjusting assembly, the CCD camera is matched for accurate focusing, then blue light laser welding is carried out, the welding precision is improved, meanwhile, the optical fiber protection assembly is arranged on the optical fiber laser welding unit, the damage of high-reflectivity materials to a laser is avoided, and the protection performance of the laser is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the construction of a fiber laser welding unit according to the present invention;
FIG. 3 is a schematic view of the pitch assembly of the present invention;
fig. 4 is a schematic view of the internal structure of the dimming tube of the present invention.
In the figure: 1. a platform; a CCD camera; 3. a fixed seat; 4. clamping a platform; 5. a sliding seat; 6. a limiting plate; 7. erecting a frame; 8. a shutter; 9. a cross beam; 10. a movable seat; 11. a semiconductor blue light welding head; 12. a blue light fiber port; 13. a blue light outlet; 14. an infrared optical fiber laser heating head; 15. a light adjusting pipe; 16. an infrared light outlet; 17. an infrared fiber port; 18. a slideway; 19. a slider; 20. a first connecting rod; 21. a second connecting rod; 22. a servo motor; 23. a refractive prism; 24. film antireflection coating; 25. a film reflective film.
Detailed Description
The invention will be further described with reference to the following drawings and detailed description:
as shown in fig. 1-4, the double-light-emitting stitch welding copper sheet and stainless steel device comprises a platform 1, wherein a clamping unit for clamping a welding part is connected to the surface of the platform 1, a blue light laser welding unit opposite to the clamping unit is arranged above the clamping unit, an optical fiber laser welding unit corresponding to an excitation point of the blue light laser welding unit is arranged below the clamping unit, a CCD camera 2 is arranged on the side part of the blue light laser welding unit, and the CCD camera 2 is used for positioning a welding point after focusing;
the clamping unit comprises a fixed seat 3 fixedly connected with the platform 1, a clamping table 4 is arranged on the surface of the fixed seat 3, fixing components are oppositely arranged on two sides of the clamping table 4, each fixing component comprises a sliding seat 5 capable of sliding along the surface of the fixed seat 3, a limiting plate 6 abutting against the outer wall of a welding part is arranged on the inner side of the top of the sliding seat 5, vertical frames 7 are arranged at two ends of the surface of the platform 1, a stop door 8 arranged at the rear end of the sliding seat 5 is arranged between the vertical frames 7, the stop door 8 is connected to the surface of the platform 1 in a sliding mode, and a gap for the welding part to move is formed between the stop doors 8;
the blue light laser welding unit comprises a cross beam 9 erected at the top of a stand 7, wherein a moving seat 10 is sleeved on the surface of the cross beam 9, the moving seat 10 is electrically connected with a servo motor 22 through a connecting shaft, the servo motor 22 drives the moving seat 10 to transversely move along the cross beam 9, the end part of the moving seat 10 is connected with a semiconductor blue light welding head 11, a blue light optical fiber port 12 is inserted at the upper part of the semiconductor blue light welding head 11, the end part of the blue light optical fiber port 12 is right opposite to the end part of the semiconductor blue light welding head 11, and a blue light outlet 13 right opposite to the surface of a clamping table 4 is arranged at the bottom part of the semiconductor blue light welding head 11;
optical fiber laser welding unit, including locating the roll adjustment subassembly of platform 1 below, locating infrared optic fibre laser heating head 14 on the roll adjustment subassembly, arrange the light modulation pipe 15 at infrared optic fibre laser heating head 14 top in to one side and arrange infrared light outlet 16 and infrared optical fiber mouth 17 of lower extreme on the light modulation pipe 15 respectively in, the roll adjustment subassembly is including setting up arc slide 18 on the bottom wall in platform 1, slide 18 evenly meanders under ka tai 4, sliding connection has slider 19 in the slide 18, slider 19 tip has cup jointed downwardly extending's head rod 20 through the spliced pole, head rod 20 passes behind platform 1 bottom and is connected with the slider 19 of arranging platform 1 in, the head rod 20 other end articulates there is second connecting rod 21, second connecting rod 21 upwards extends and the other end is articulated with the dead lever left end, dead lever fixed connection is in platform 1 bottom, the terminal card of connecting axle is gone into in infrared optic fibre laser heating head 14, infrared optic fibre laser heating head 14 top is connected with the oblique light modulation pipe 15, the infrared light outlet 16 that the top was connected with the opening upwards transfers the platform, and the bottom is connected with infrared optical fiber mouth 17. The second connecting rod 21 is hinged to the fixing rod and then electrically connected to the micro motor, the micro motor drives the second connecting rod 21 to deflect at a connecting point, and a conventional rotating structure is adopted, which is not described herein.
According to the invention, infrared optical fibers are used as a welding heat source to form a lock hole on a workpiece, then blue laser defocusing or welding heat treatment is adopted, so that the cooling speed of a welded part is reduced, materials sensitive to cracks can benefit, the amount of bainite structures in a welding metal and a heat affected zone is increased, the toughness of an expected weld is improved, molten solder paste flows uniformly due to different powers of upper and lower lasers, and hump and irregular welding are prevented.
The upper end and the lower end of the light adjusting tube 15 are horizontally arranged, the optical fiber laser protection assembly is arranged in the light adjusting tube 15 and comprises a refraction prism 23 attached to the inner wall of the light adjusting tube 15 and a film antireflection film 24 arranged at the top end port of the light adjusting tube 15, a gap between the bottoms of the refraction prisms 23 corresponds to the infrared optical fiber port 17, a horizontal film reflection film 25 is arranged outside the refraction prism 23, and the refraction prism 23 is arranged in parallel in the light adjusting tube 15 and forms a parallelogram with the upper end and the lower end port of the light adjusting tube 15. When the laser welding device is used, when light is transmitted in the forward direction from a laser, the light path sequentially passes through the refraction prism 23 at one end of the light adjusting tube 15, is reflected to the surface of the other refraction prism 23 parallel to the light path, and is reflected to the infrared light outlet 16, wherein the light reflected to the laser is reflected to the surface of a welding part by the film reflection film 25, and the reflected light is absorbed by the film reflection reducing coating 24 and then is converged with original emitted light to be emitted again.
When the device works, a copper sheet and stainless steel are vertically stacked on a clamping table 4, solder paste is fully coated in the middle of a stacking area, a limiting plate 6 is abutted against two sides of the copper sheet respectively, a semiconductor blue laser is connected into a blue light optical fiber port 12 through a OBH interface, a collimation and focusing lens in a semiconductor blue light welding head 11 focuses blue light, light is emitted from a blue light emitting port 13, the semiconductor blue light welding head 11 is adjusted to place a gathered light spot on the copper sheet, a CCD camera 2 searches for a welding position and a focal length, a servo motor 22 drives a moving seat 10 to move along a cross beam 9 through a connecting shaft, so that the blue light spot is controlled to move and weld on the copper sheet, meanwhile, an infrared fiber laser is connected into an infrared optical fiber port 17 through a OBH interface, the infrared laser is diffused by a collimation and diffusing lens in a heating head 14 of the infrared fiber laser, the infrared light is emitted from an infrared light emitting port 16, the middle of a platform 1 is hollowed, the light emitting diffusion light spot on the infrared light emitting port 16 is irradiated on the stainless steel sheet through a hollowed area, the middle hollowed area, the power of the infrared fiber laser is small value, and only the stainless steel sheet is heated. The two welding heads emit light simultaneously to ensure simultaneous heating and turn off light simultaneously. The light emitting time is gradually adjusted according to the welding result.
Therefore, the invention is not to be limited to the specific embodiments, but rather, all equivalent changes and modifications in the shapes, structures, characteristics and spirit of the invention are intended to be included within the scope of the appended claims.
Claims (6)
1. The utility model provides a two light-emitting stitch welding copper sheet and stainless steel device, includes the platform, its characterized in that: the surface of the platform is connected with a clamping unit for clamping a welding part, a blue light laser welding unit opposite to the clamping unit is arranged above the clamping unit, an optical fiber laser welding unit corresponding to an excitation point of the blue light laser welding unit is arranged below the clamping unit, the optical fiber laser welding unit is used for welding a lower stainless steel sheet in a low-power mode, an upper copper sheet is welded in the blue light laser welding unit in an adjusting mode, a CCD camera is arranged on the side portion of the blue light laser welding unit, and the CCD camera is used for positioning a welding point after focusing;
the clamping unit comprises a fixed seat fixedly connected with the platform, a clamping table is arranged on the surface of the fixed seat, fixing components are oppositely arranged on two sides of the clamping table, each fixing component comprises a sliding seat capable of sliding along the surface of the fixed seat, a limiting plate abutting against the outer wall of a welding part is arranged on the inner side of the top of the sliding seat, vertical frames are arranged at two ends of the surface of the platform, a stop door arranged at the rear end of the sliding seat is arranged between the vertical frames, the stop door is connected to the surface of the platform in a sliding mode, and a gap for the welding part to move is formed between the stop doors;
the blue light laser welding unit comprises a cross beam erected at the top of a vertical frame, a moving seat is sleeved on the surface of the cross beam, a semiconductor blue light welding head is connected to the end of the moving seat, a blue light optical fiber port is inserted in the upper part of the semiconductor blue light welding head, the end of the blue light optical fiber port is opposite to the end of the semiconductor blue light welding head, and a blue light outlet opposite to the surface of a clamping table is arranged at the bottom of the semiconductor blue light welding head;
optical fiber laser welding unit, including locating the roll adjustment subassembly of platform below, locating infrared optic fibre laser heating head on the roll adjustment subassembly, arrange the light modulation pipe at infrared optic fibre laser heating head top in to one side and arrange the infrared light outlet and the infrared optical fiber mouth of adjusting luminance pipe upper and lower extreme in respectively, the roll adjustment subassembly is including setting up the arc slide on the diapire in the platform, the slide evenly meanders under the ka tai, sliding connection has the slider in the slide, the slider tip has cup jointed downwardly extending's head rod through the spliced pole, the head rod other end articulates there is the second connecting rod, the second connecting rod upwards extends and the other end is articulated with the dead lever left end, dead lever fixed connection is in the platform bottom, the terminal card of connecting axle is gone into in the infrared optic fibre laser heating head, infrared optic fibre laser heating head top is connected with the oblique light modulation pipe, the light modulation pipe top is connected with the ascending infrared light outlet of opening, and the bottom is connected with infrared optical fiber mouth.
2. The dual-light-emitting stitch-welded copper sheet and stainless steel device according to claim 1, wherein: the moving seat is electrically connected with the servo motor through the connecting shaft, and the servo motor drives the moving seat to move transversely along the cross beam.
3. The dual-light-emitting stitch-welded copper sheet and stainless steel device according to claim 1, wherein: and the first connecting rod penetrates through the bottom of the platform and then is connected with a sliding block arranged in the platform.
4. The dual-light-emitting stitch-welded copper sheet and stainless steel device according to claim 1, wherein: the end parts of the upper end and the lower end of the dimming tube are arranged horizontally, and an optical fiber laser protection assembly is arranged in the dimming tube.
5. The dual-light-emitting stitch-welded copper sheet and stainless steel device according to claim 4, wherein: the optical fiber laser protection component comprises a refraction prism attached to the inner wall of the dimming tube and a film antireflection film arranged at the top end port of the dimming tube, a gap between the bottoms of the refraction prisms corresponds to the infrared optical fiber port, and a horizontal film reflecting film is arranged outside the refraction prism.
6. The dual-light-emitting stitch-welded copper sheet and stainless steel device according to claim 5, wherein: the refraction prism is arranged in parallel in the dimming tube and forms a parallelogram together with the upper and lower ports of the dimming tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111147.2A CN114378383B (en) | 2022-01-27 | 2022-01-27 | Double-light-emitting stitch welding copper sheet and stainless steel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210111147.2A CN114378383B (en) | 2022-01-27 | 2022-01-27 | Double-light-emitting stitch welding copper sheet and stainless steel device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114378383A CN114378383A (en) | 2022-04-22 |
| CN114378383B true CN114378383B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210111147.2A Active CN114378383B (en) | 2022-01-27 | 2022-01-27 | Double-light-emitting stitch welding copper sheet and stainless steel device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752352A (en) * | 1986-06-06 | 1988-06-21 | Michael Feygin | Apparatus and method for forming an integral object from laminations |
| CN103846561B (en) * | 2012-11-30 | 2015-07-08 | 中国科学院沈阳自动化研究所 | Laser stitch welding combined compressing device |
| CN110421223B (en) * | 2019-08-21 | 2021-09-07 | 新疆大学 | Titanium alloy-stainless steel dissimilar metal laser brazing method adopting copper-based brazing filler metal |
| CN111151875A (en) * | 2020-01-08 | 2020-05-15 | 温州大学 | Method for improving strength of copper-steel dissimilar metal laser stitch welding joint |
| CN111347158B (en) * | 2020-03-20 | 2020-12-29 | 华中科技大学 | Compound welding set of semiconductor blue light laser and fiber laser |
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- 2022-01-27 CN CN202210111147.2A patent/CN114378383B/en active Active
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