CN111843196B - Simple and easy coaxial protection device that blows of laser welding - Google Patents
Simple and easy coaxial protection device that blows of laser welding Download PDFInfo
- Publication number
- CN111843196B CN111843196B CN202010605799.2A CN202010605799A CN111843196B CN 111843196 B CN111843196 B CN 111843196B CN 202010605799 A CN202010605799 A CN 202010605799A CN 111843196 B CN111843196 B CN 111843196B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- protective gas
- welding
- connecting pipe
- mounting seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
-
- 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
- B23K26/24—Seam welding
Landscapes
- 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 simple coaxial blowing protection device for laser welding, which is used below a laser head and is coaxial with the laser beam. One end of the mounting seat is connected with the laser head, the other end of the mounting seat is connected with the connecting pipe, and two threaded holes which can be connected with an air inlet pipe are formed in the mounting seat; the other end of the connecting pipe is connected with a protective gas outer nozzle; the protective gas inner nozzle is connected with the outer nozzle through threads, and the distance between the end face of the inner nozzle and the end face of the outer nozzle can be flexibly adjusted through the threads; the locking nut plays a role in fixing. The invention realizes the full protection of the welding line of a more complex welding path, prevents the oxidation and pollution of the welding line, has good protection effect, and has simple structure, convenient processing and manufacture, and convenient assembly and adjustment compared with other laser welding coaxial protection devices.
Description
Technical Field
The invention relates to the field of laser welding, in particular to a simple coaxial blowing protection device for laser welding.
Background
Laser welding is one of the widely used high-energy beam welding methods at present, has the advantages of high automation degree, high production efficiency, small welding deformation, narrow heat affected zone, large depth-to-width ratio and the like, and is widely applied to various industries, such as automobiles, aerospace, electronic communication and the like.
The gas protection is one of key factors influencing the quality of laser welding, can protect a molten pool in the laser welding process, prevent a welding seam from being polluted by air to generate defects and welding seam oxidation, can disperse plasma generated in high-power laser welding, protects an optical lens in a laser head from being polluted by metal steam and molten drop splashing, and plays an important role in the welding process. The commonly used gas protection methods include paraxial blowing protection and coaxial blowing protection, the paraxial blowing protection is that protective gas is blown to a welding line at a certain angle through an additional device, the coaxial blowing protection is that a protective gas nozzle and a light beam are blown to the welding line at the same angle along the same axis. The paraxial blowing protection device is generally simple in structure and easy to realize, so that the paraxial blowing protection device is widely applied, but because the angle of the protective gas is fixed, the paraxial blowing protection device can only fully protect one direction during welding, so that the paraxial blowing protection device has a good protection effect on linear welding seams, and has a poor protection effect on curved welding seams or easily oxidized metal welding. The coaxial blowing protection well solves the problems, can realize the sufficient protection of the welding line, has good protection effect on the welding line of the curve and the easily oxidized metal, but has more complex structure and higher cost.
The invention designs a simple coaxial blowing protection device to solve the problem of poor protection effect of paraxial blowing protection on curved weld seams, and the simple coaxial blowing protection device has the advantages of simple structure, easiness in processing, and convenience in operation and use.
Disclosure of Invention
The invention aims to provide a simple coaxial blowing protection device for laser welding, which can fully protect a molten pool in the process of laser welding curve welding seams, effectively prevent the welding seams from being oxidized, and has the advantages of simple structure and convenient adjustment.
In order to achieve the purpose, the invention adopts the technical scheme that:
a simple coaxial blowing protection device for laser welding comprises a mounting seat, a connecting pipe, a shielding gas outer nozzle, a shielding gas inner nozzle and a locking nut. One end of the mounting seat is connected with the laser head through a bolt, and the other end of the mounting seat is connected with the connecting pipe; the other end of the connecting pipe is connected with a protective gas outer nozzle through an external thread at the end part; the protective gas inner nozzle is arranged in the protective gas outer nozzle and is connected with the protective gas outer nozzle through threads; each connecting piece is coaxial with the laser beam in the axial direction.
The mounting seat is connected with the laser head through a bolt, and two threaded holes are formed in the side wall of the mounting seat and can be connected with an air inlet pipe; the inner wall of the end part is provided with a section of thread which can be connected with a connecting pipe;
the outer walls of the two ends of the connecting pipe are respectively provided with a section of external thread which can be connected with the mounting seat and the protective gas external nozzle, when in use, the distance between the nozzle and a workpiece can be adjusted by adjusting the screwing-in depth of the threads, and the nozzle and the workpiece are fixed by a locking nut;
the central circular hole of the nozzle in the protective gas can pass through a laser beam; one end section is conical, can guide air flow and simultaneously avoid laser beam burning loss; two circles of small holes with the diameter of 2mm are uniformly distributed on the section of the circular ring, so that the uniform and stable air flow blown to the surface of the welding seam is ensured;
the section of one end part of the protective gas outer nozzle is conical, so that the gas flow blown to the surface of the welding seam is concentrated, and the protective effect is enhanced; the inner wall of the cylinder part is processed into threads which can be connected with a protective gas inner nozzle and a connecting pipe.
The beneficial effects of the invention are as follows:
1. the coaxial blowing protection device has good applicability to curved weld seams or easily oxidized metals in the laser welding process, can fully protect weld seam molten pool metals and optical lenses, and has good protection effect;
2. the distance between the coaxial air blowing protection device and the workpiece can be adjusted through threads, so that the operation is convenient and fast; the distance between the end face of the inner nozzle and the end face of the outer nozzle of the shielding gas can be flexibly adjusted, the distance can be adjusted according to welding requirements, when the end face of the inner nozzle is higher than the end face of the outer nozzle, burning loss of flame possibly generated in the welding process to the nozzle can be reduced or avoided, meanwhile, pollution of welding spatter and the like to the inner nozzle can be reduced, when the end face of the inner nozzle is lower than the end face of the outer nozzle, the method is suitable for the condition that the space range of a welding path is small, and interference with the shielding gas nozzle can be avoided;
3. the device has simple structure, easy processing, convenient installation and adjustment.
Drawings
Fig. 1 is an overall structure diagram of a coaxial blowing protection device.
FIG. 2 is a schematic view of the internal structure of the present invention.
Fig. 3-1 is a perspective view of the mounting base.
Fig. 3-2 is a cross-sectional view of the mount.
FIG. 4-1 is a schematic view of a connecting tube.
Fig. 4-2 is a cross-sectional view of the connection tube.
FIG. 5-1 is a schematic view of a shielding gas inner nozzle.
Fig. 5-2 is a cross-sectional view of the shield gas inner nozzle.
FIG. 6-1 is a schematic view of a shielding gas outer nozzle.
Fig. 6-2 is a cross-sectional view of the shield gas outer nozzle.
Fig. 7 is a schematic view of a lock nut.
Fig. 8 is a schematic diagram of an application.
Detailed Description
The invention is further explained in detail by combining the attached drawings 1, 2, 3-1, 3-2, 4-1, 4-2, 5-1, 5-2, 6-1, 6-2, 7, 8 and the reference numerals.
A simple coaxial blowing protection device for laser welding comprises a mounting seat 1, a connecting pipe 2, a shielding gas outer nozzle 3, a shielding gas inner nozzle 4 and a locking nut 5;
one end of the mounting seat 1 is connected with the laser head through a bolt, and the other end of the mounting seat is connected with the connecting pipe 2;
the other end of the connecting pipe 2 is connected with a protective gas outer nozzle 3 through an external thread at the end part;
the relative positions of the mounting seat 1, the protective gas outer nozzle 3 and the connecting pipe can be fixed by using a locking nut 5, so that the sliding in the welding process is prevented;
the protective gas inner nozzle 4 is arranged in the protective gas outer nozzle 3 through threaded connection;
each connector is axially coaxial with the laser beam.
The side wall of the mounting seat is provided with two threaded holes which can be connected with an air inlet pipe; the inner wall of the end part is provided with a section of thread which can be connected with the connecting pipe.
The outer walls of the two ends of the connecting pipe are respectively provided with a section of external thread which can be connected with the mounting seat and the protective gas external nozzle, when in use, the distance between the nozzle and a workpiece can be adjusted by adjusting the screwing-in depth of the threads, and the nozzle is fixed by a locking nut.
The central circular hole of the nozzle in the protective gas can pass through a laser beam; one end section is conical, can guide air flow and simultaneously avoid laser beam burning loss; two circles of small holes with the diameter of 2mm are uniformly distributed on the section of the circular ring, so that the air flow blown to the surface of the welding seam is uniform and stable.
The section of one end part of the protective gas outer nozzle is conical, so that the gas flow blown to the surface of the welding seam is concentrated, and the protective effect is enhanced; the inner wall of the cylinder part is processed into threads which can be connected with a protective gas inner nozzle and a connecting pipe.
After the shielding gas inner nozzle and the shielding gas outer nozzle are assembled, the end surface position of the inner nozzle can be adjusted through screwing in depth through threads, and the burning loss of flame to the nozzle possibly generated in the welding process can be reduced or avoided when the end surface of the inner nozzle is higher than that of the outer nozzle, and meanwhile, the pollution of welding spatter and the like to the inner nozzle is reduced; when the end face of the inner nozzle is lower than that of the outer nozzle, the welding nozzle is suitable for the condition of smaller space range of a welding path, and can avoid interference with the protective gas nozzle.
The mounting seat and the connecting pipe are made of aluminum alloy, but not limited to the aluminum alloy; the material of the shielding gas inner nozzle and the shielding gas outer nozzle is copper, but not limited thereto.
Examples
The mounting seat is connected with the laser head through four threaded holes; the side wall is provided with two threaded holes which can be connected with an air inlet pipe and is filled with protective gas; the inner wall of the other end is provided with a section of thread which can be connected with the connecting pipe;
the outer walls of the two ends of the connecting pipe are respectively provided with a section of external thread, one end of the external thread is connected with the mounting seat, the other end of the external thread is connected with the protective gas external nozzle, the distance between the nozzle and a workpiece can be adjusted by adjusting the screwing-in depth of the threads at the two ends when the connecting pipe is used, and the connecting pipe is fixed by a locking nut;
the central circular hole of the nozzle in the protective gas can pass through a laser beam; one end section is conical, can guide airflow and simultaneously avoid burning loss of laser beams; two circles of small holes with the diameter of 2mm are uniformly distributed on the section of the circular ring, so that the uniform and stable air flow blown to the surface of the welding seam is ensured;
the protective gas inner nozzle is arranged in the outer nozzle and is connected with the outer nozzle through threads, and the screwing depth of the inner nozzle can be adjusted according to welding requirements to adjust the position of the end face; the protective gas outer nozzle is connected with the connecting pipe through inner wall threads;
the device has simple structure, good protection effect and convenient installation, adjustment and disassembly.
1. The part is clamped and fixed by a pressing block or a tool, and the position of the pressing block is adjusted to ensure that the part cannot interfere with the outer nozzle of the shielding gas during welding.
2. The mounting seat can be connected with the laser head by using a bolt, then a connecting pipe and a locking nut are mounted, then the shielding gas outer nozzle assembled with the shielding gas inner nozzle is mounted, the position of the laser head is adjusted to enable the central axis of the shielding gas device and the axis of a welding line to be located on the same plane, and the height of the nozzle is 3-10mm above the surface of a workpiece.
3. The threaded hole on the side surface of the mounting seat is connected with an air inlet pipe, protective gas is introduced, and the gas flow is adjusted.
4. In the laser welding process, the blowing direction of the protective gas is consistent with the light beam, so the protection effect is not limited by the welding direction, a molten pool and a high-temperature welding seam area behind the molten pool can be fully protected in the welding process, the protection effect is good, the end face of the inner nozzle is adjusted to be higher than the end face of the outer nozzle, and the pollution of welding spatter to the inner nozzle and the burning loss of welding flame to the inner nozzle are effectively reduced.
Claims (7)
1. The utility model provides a simple and easy coaxial protection device that blows of laser welding which characterized in that:
comprises a mounting seat, a connecting pipe, a protective gas outer nozzle, a protective gas inner nozzle and a locking nut;
one end of the mounting seat is connected with the laser head through a bolt, and the other end of the mounting seat is connected with the connecting pipe;
the other end of the connecting pipe is connected with a protective gas outer nozzle through an external thread at the end part;
the relative positions of the mounting seat, the shielding gas outer nozzle and the connecting pipe can be fixed by using a locking nut, so that the sliding in the welding process is prevented;
the protective gas inner nozzle is arranged in the protective gas outer nozzle through threaded connection;
each connector is axially coaxial with the laser beam.
2. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
the side wall of the mounting seat is provided with two threaded holes which can be connected with an air inlet pipe; the inner wall of the end part is provided with a section of thread which can be connected with the connecting pipe.
3. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
the outer walls of the two ends of the connecting pipe are respectively provided with a section of external thread which can be connected with the mounting seat and the protective gas external nozzle, when in use, the distance between the nozzle and a workpiece can be adjusted by adjusting the screwing-in depth of the threads, and the nozzle is fixed by a locking nut.
4. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
the central circular hole of the nozzle in the protective gas can pass through a laser beam; one end section is conical, can guide air flow and simultaneously avoid laser beam burning loss; two circles of small holes with the diameter of 2mm are uniformly distributed on the section of the circular ring, so that the air flow blown to the surface of the welding seam is uniform and stable.
5. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
the section of one end part of the protective gas outer nozzle is conical, so that the gas flow blown to the surface of the welding seam is concentrated, and the protective effect is enhanced; the inner wall of the cylinder part is processed into threads which can be connected with a protective gas inner nozzle and a connecting pipe.
6. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
after the shielding gas inner nozzle and the shielding gas outer nozzle are assembled, the end surface position of the inner nozzle can be adjusted through screwing in depth through threads, and the burning loss of flame to the nozzle possibly generated in the welding process can be reduced or avoided when the end surface of the inner nozzle is higher than that of the outer nozzle, and meanwhile, the pollution of welding spatter and the like to the inner nozzle is reduced; when the end face of the inner nozzle is lower than that of the outer nozzle, the welding nozzle is suitable for the condition of smaller space range of a welding path, and can avoid interference with the protective gas nozzle.
7. The simple coaxial blowing protection device for laser welding according to claim 1, characterized in that:
the mounting seat and the connecting pipe are made of aluminum alloy, but not limited to the aluminum alloy; the material of the shielding gas inner nozzle and the shielding gas outer nozzle is copper, but not limited thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605799.2A CN111843196B (en) | 2020-06-29 | 2020-06-29 | Simple and easy coaxial protection device that blows of laser welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010605799.2A CN111843196B (en) | 2020-06-29 | 2020-06-29 | Simple and easy coaxial protection device that blows of laser welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111843196A CN111843196A (en) | 2020-10-30 |
| CN111843196B true CN111843196B (en) | 2022-05-17 |
Family
ID=72989494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010605799.2A Active CN111843196B (en) | 2020-06-29 | 2020-06-29 | Simple and easy coaxial protection device that blows of laser welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111843196B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977077B (en) * | 2021-11-12 | 2022-07-19 | 哈尔滨工业大学 | Height-adjustable coaxial blowing protection device for coaxial wire feeding laser head |
| CN117259986B (en) * | 2023-11-22 | 2024-01-30 | 济南梓桂数控设备有限公司 | Automatic change laser welding device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3749356B2 (en) * | 1997-09-24 | 2006-02-22 | 株式会社アマダ | Laser nozzle machining nozzle |
| CN2858144Y (en) * | 2005-10-22 | 2007-01-17 | 燕山大学 | Arc shaped nozzle special for ejection drill |
| CN201900382U (en) * | 2010-11-09 | 2011-07-20 | 广州有色金属研究院 | Gas shield device for laser processing |
| CN103212802A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Coaxial type nozzle used for laser micro machining of thin-walled tube |
| CN206811309U (en) * | 2016-12-29 | 2017-12-29 | 大族激光科技产业集团股份有限公司 | A kind of coaxial blowning installation for laser process equipment |
| CN108067736B (en) * | 2017-11-21 | 2019-06-28 | 华中科技大学 | A kind of narrow gap laser-arc hybrid welding in industry gas shield device and adjusting method |
| CN110052707B (en) * | 2019-04-16 | 2020-12-25 | 大族激光科技产业集团股份有限公司 | Blowing nozzle and using method |
| CN110434459A (en) * | 2019-07-20 | 2019-11-12 | 北京工业大学 | A kind of double-layer coaxial laser welding head for controlling plumage brightness and protecting molten bath |
-
2020
- 2020-06-29 CN CN202010605799.2A patent/CN111843196B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111843196A (en) | 2020-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111843196B (en) | Simple and easy coaxial protection device that blows of laser welding | |
| CN109570755B (en) | Laser welding gas protection device, laser welding equipment and application method | |
| US4324972A (en) | Process and device for laser-beam melting and flame cutting | |
| CN101264519B (en) | Adjustable laser coaxial powder feeding nozzle | |
| CN201702524U (en) | Titanium alloy girth welding fixture | |
| CN107717227B (en) | Laser narrow gap welding joint | |
| CN110587139A (en) | Coaxial wire and powder feeding printing nozzle and additive manufacturing device for arc laser | |
| CN103567636B (en) | A kind of coaxial laser welding job head | |
| CN101274390B (en) | Coaxial nozzle system for laser rapid forming | |
| CN108406111B (en) | Optical fiber laser double-layer coaxial protection welding nozzle | |
| CN217253757U (en) | Gas conveying gas circuit device for laser processing equipment | |
| CN110961787A (en) | Method for laser deep fusion welding of thick plate | |
| CN1986136A (en) | Adjustable arc stiffness welding gun | |
| CN201195748Y (en) | Coaxial nozzle device for laser quick forming | |
| CN215034467U (en) | Protective gas hood for laser welding | |
| CN114643410B (en) | Coaxial wire feeding laser manufacturing method and device | |
| CN116275504A (en) | Coaxial protection device for laser welding and manufacturing method thereof | |
| CN114346416B (en) | Nozzle assembly for laser processing equipment | |
| CN217253596U (en) | Nozzle device for laser processing equipment | |
| CN112207434A (en) | Laser welding shielding gas device | |
| CN114346430A (en) | Laser processing apparatus | |
| CN214322179U (en) | Laser welding shielding gas device | |
| CN214721574U (en) | Wire feeding pipe for welding large-thickness titanium alloy plate ultra-narrow gap laser filling hot wire | |
| CN221435370U (en) | Wire feeding direction on-line controllable follow-up wire feeding device | |
| CN210435538U (en) | Protective gas spraying mechanism for laser welding of vehicle body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.18a-1, Feiyun Road, Hunnan District, Shenyang City, Liaoning Province Applicant after: Shenyang fuchuang precision equipment Co.,Ltd. Address before: No.18a-1, Feiyun Road, Dongling District, Shenyang, Liaoning Province, 110000 Applicant before: Shenyang Fortune Precision Equipment Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |