CN110421256B - Automatic laser welding arm - Google Patents
Automatic laser welding arm Download PDFInfo
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- CN110421256B CN110421256B CN201910748341.XA CN201910748341A CN110421256B CN 110421256 B CN110421256 B CN 110421256B CN 201910748341 A CN201910748341 A CN 201910748341A CN 110421256 B CN110421256 B CN 110421256B
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- welding
- laser welding
- head
- clamping
- arm
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention discloses an automatic laser welding arm, which relates to the technical field of laser welding arms.A laser welding head is connected to a supporting arm by adopting a welding oscillation mechanism, and a protective gas spray head is connected to the supporting arm by adopting a swinging mechanism, so that when the laser welding head performs welding, a controller controls the welding oscillation mechanism to drive the laser welding head to perform reciprocating oscillation in the width direction of a welding seam; and the controller also controls the laser welding head to do swinging motion along the welding feeding direction of the laser welding head under the driving of the swinging mechanism, thus improving the welding uniformity, effectively enabling all positions of the welding joint to be uniformly heated even if the welding joint is larger, improving the uniformity of hot melting, ensuring the reliability and stability of welding, improving the welding uniformity, solving the problem that the welding joint is easy to crack due to overheating and over-melting at the center of the welding head caused by only improving the welding power, and improving the welding firmness.
Description
Technical Field
The invention relates to the technical field of laser welding arms, in particular to an automatic laser welding arm.
Background
In laser welding, high-energy laser pulses are used for locally heating materials in a micro area, the energy radiated by laser is diffused into the materials through heat conduction, the materials are melted to form a specific molten pool so as to achieve the purpose of welding, and a welding arm is required to be used during laser welding and can effectively weld workpieces.
However, when a conventional welding arm is used for welding a workpiece, particularly when a welding seam is wide, it is difficult for general welding equipment with normal power to perform effective welding, and if only the welding power is increased, local overheating and unreliable edge welding fusion are easily caused for a large welding seam, cracks are easily generated at the welding position of the edge, and the reliability and safety of welding are difficult to meet. Moreover, the welding arm is easy to cause dust in the long-time use process, and the dust enters the welding arm to cause damage, thereby influencing the service life of the welding arm.
Accordingly, the present invention is directed to an automatic laser welding arm that solves the problems set forth in the background above.
Disclosure of Invention
The present invention is directed to an automatic laser welding arm, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic laser welding arm comprises a supporting arm, a laser welding head and a protective gas injection head, wherein the laser welding head is arranged at the center of the inner part of the front end of the supporting arm, and at least one protective gas injection head is arranged at the position, located on the outer peripheral side of the laser welding head, of the front end of the supporting arm; it is characterized in that the preparation method is characterized in that,
the laser welding head is connected to the supporting arm by a welding oscillation mechanism, and the protective gas injection head is connected to the supporting arm by a swinging mechanism;
further comprising a controller arranged such that: when the laser welding head performs welding, the controller controls the welding oscillation mechanism to drive the laser welding head to perform reciprocating oscillation in the width direction of a welding seam; and the controller also controls the laser welding head to swing along the welding feeding direction of the laser welding head under the driving of the swing mechanism.
Further, preferably, the oscillation frequency of the reciprocating oscillation of the welding oscillation mechanism is 30 to 1000Hz, and the oscillation amplitude of the reciprocating oscillation is 90 to 110% of the width of the weld.
Further, as preferred, the center of support arm is provided with and holds the chamber, and the rear side that should hold the chamber is provided with the controller, it is provided with the card pad on the anterior inside wall that holds the chamber, the inboard of card pad is provided with the inner jacket seat of fixed laser welding head, the front end of inner jacket seat is provided with the elastic connection cover, the rear end of laser welding head adopts the elastic connection cover is connected on the inner jacket seat, just the elastic connection cover allows laser welding head around rather than the connection be in certain angular range oscillating motion.
Preferably, a clamping seat is further arranged on the inner side of the front end of the supporting arm, the welding oscillating mechanism is fixedly sleeved on the clamping seat, the laser welding head penetrates forwards from the center of the welding oscillating mechanism, and the welding oscillating mechanism adopts an electromagnetic oscillation driving mechanism.
Preferably, at least one swing mechanism is arranged at the front end of the supporting arm and around the laser welding head, the output end of the swing mechanism is connected with a protective gas injection pipe, the protective gas injection head is fixed at the end of the protective gas injection pipe, and the injection angle of the protective gas injection pipe is driven by the swing mechanism to swing.
Preferably, the swing driving mechanism is a cam swing mechanism, a link swing mechanism or an electromagnetic swing driving mechanism, and the length of the laser welding head extending forward is greater than the length of the front body of the shielding gas spraying head.
Further, the invention provides automatic laser welding equipment which is characterized by comprising the automatic laser welding arm and a workbench, wherein a vertically extending working mechanism is fixedly arranged on the upper surface of the workbench, the welding arm is movably arranged on one side of the working mechanism, a cleaning device is arranged on the front surface side of the welding arm, a clamping device is fixedly arranged on the upper surface of the workbench, and a workpiece is fixedly arranged in the clamping device.
Further, as preferred, cleaning device includes connecting rod, handle, slider, spout and brush, the slider slides and sets up in the inside of spout, and one side of slider is provided with the connecting rod, the below of connecting rod is provided with the brush, the connecting rod is the U type setting, the connecting rod slides with the slider and sets up.
Further, as preferred, the clamping device comprises an upper clamping plate, a vertical plate, a clamping sheath, a clamping groove and a lower clamping plate, the clamping sheath is embedded in the clamping groove, the lower clamping plate is fixedly arranged on the upper surface of the clamping sheath, the vertical plate is arranged above the lower clamping plate, and the upper clamping plate is arranged on one side of the vertical plate.
Further, as preferred, the punch holder sets up with the riser is perpendicular, punch holder and lower plate parallel arrangement, the card sheath sets up with the lower plate is perpendicular.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the laser welding head is connected to the supporting arm by adopting the welding oscillation mechanism, and the protective gas injector head is connected to the supporting arm by adopting the swing mechanism, so that when the laser welding head is used for welding, the controller controls the welding oscillation mechanism to drive the laser welding head to perform reciprocating oscillation in the width direction of a welding seam; the controller also controls the laser welding head to swing along the welding feeding direction of the laser welding head under the driving of the swing mechanism, so that the welding uniformity can be improved, all positions of the welding joint can be effectively uniformly heated even if the welding joint is larger, the hot melting uniformity is improved, the welding reliability and stability are ensured, the welding uniformity is improved, the problem that the welding joint is easy to crack due to overheating and over-melting at the center of the welding joint caused by only improving the welding power is solved, and the welding firmness is improved;
2. the sliding block slides in the sliding groove, the connecting rod slides left and right through the handle, and the brush on the connecting rod is cleaned on the movable arm, so that the service life of the sliding block is effectively prolonged.
Drawings
FIG. 1 is a schematic view of an automatic laser welding apparatus;
FIG. 2 is a cross-sectional view of a cleaning device in an automated laser welding apparatus;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic view of an automated laser welding arm; .
Detailed Description
Referring to fig. 1 to 4, in an embodiment of the present invention, an automatic laser welding arm 3 includes a supporting arm 9, a laser welding head 5, and a shielding gas injector 14, wherein the laser welding head 5 is disposed at the center of the front end of the supporting arm 9, and at least one shielding gas injector 14 is disposed at the outer periphery of the laser welding head 5 at the front end of the supporting arm 9; it is characterized in that the preparation method is characterized in that,
the laser welding head 14 is connected to the supporting arm 9 by a welding oscillation mechanism 13, and the protective gas injection head 14 is connected to the supporting arm 9 by a swing mechanism 12;
further comprising a controller 11, said controller 11 being arranged such that: when the laser welding head performs welding, the controller controls the welding oscillation mechanism 13 to drive the laser welding head 5 to perform reciprocating oscillation in the width direction of the welding seam; and the controller also controls the laser welding head 5 to make swinging motion along the welding feeding direction of the laser welding head under the driving of the swinging mechanism 12.
In the preferred embodiment, the oscillation frequency of the reciprocating oscillation of the welding oscillation mechanism 13 is 30-1000Hz, and the oscillation amplitude of the reciprocating oscillation is 90% -110% of the weld width.
The center of support arm 9 is provided with and holds the chamber, and the rear side that should hold the chamber is provided with the controller, it is provided with card pad 10 on the anterior inside wall that holds the chamber, the inboard of card pad 10 is provided with the inner jacket seat 4 of fixed laser welding head, the front end of inner jacket seat 4 is provided with elastic connection sleeve 17, the rear end of laser welding head adopts elastic connection sleeve 17 connects on the inner jacket seat 4, just elastic connection sleeve 17 allows the laser welding head is around rather than the connection in certain angular range oscillating motion.
The inner side of the front end of the supporting arm 9 is further provided with a clamping seat 16, the welding oscillating mechanism is fixedly sleeved on the clamping seat 16, the laser welding head penetrates forwards from the center of the welding oscillating mechanism, and the welding oscillating mechanism adopts an electromagnetic oscillation driving mechanism.
The front end of the supporting arm 9 is provided with at least one swing mechanism 12 positioned around the laser welding head, the output end of the swing mechanism 12 is connected with a protective gas injection pipe 15, the end part of the protective gas injection pipe 15 is fixed with the protective gas injection head 14, and the injection angle of the protective gas injection pipe 15 is driven by the swing mechanism to swing.
In a preferred embodiment, the swing driving mechanism is a cam swing mechanism, a link swing mechanism or an electromagnetic swing driving mechanism, and the length of the laser welding head extending forward is greater than the length of the front body of the shielding gas spraying head.
In addition, the invention also provides automatic laser welding equipment which is characterized by comprising a workbench 7, wherein the upper surface of the workbench 7 is fixedly provided with a vertically extending working mechanism 1, one side of the working mechanism 1 is movably provided with the welding arm 3, the front surface side of the welding arm 3 is provided with a cleaning device 2, the upper surface of the workbench 7 is fixedly provided with a clamping device 6, and a workpiece 8 is fixedly arranged in the clamping device 6.
As a preferred embodiment, the cleaning device 2 includes a connecting rod 21, a handle 22, a slider 23, a sliding slot 24 and a brush 25, the slider 23 is slidably disposed inside the sliding slot 24, the connecting rod 21 is disposed on one side of the slider 23, the brush 25 is disposed below the connecting rod 21, the connecting rod 21 is U-shaped, and the connecting rod 21 and the slider 23 are slidably disposed.
Clamping device 6 includes punch holder 61, riser 62, card sheath 63, draw-in groove 64 and lower plate 65, the embedding of card sheath 63 is installed in the inside of draw-in groove 64, and the fixed surface of the upper surface of card sheath 63 is provided with lower plate 65, the top of lower plate 65 is provided with riser 62, one side of riser 62 is provided with punch holder 61.
The upper plate 61 is perpendicular to the vertical plate 62, the upper plate 61 is parallel to the lower plate 65, and the clamping sheath 63 is perpendicular to the lower plate 65.
The working principle of the invention is as follows: when the welding device is used, the working mechanism 1 is placed on the working table 7, the welding arm 3 is movably arranged on one side of the working mechanism 1, the welding arm 3 can move up and down in the working mechanism 1, a workpiece 8 is welded through the welding head 5, and when a laser welding head is used for welding, the controller controls the welding oscillation mechanism to drive the laser welding head to perform reciprocating oscillation in the width direction of a welding seam; the controller also controls the laser welding head to swing along the welding feeding direction of the laser welding head under the driving of the swing mechanism, so as to improve the welding uniformity and stability, ensure the welding reliability and improve the welding effect and efficiency, meanwhile, the invention is provided with the clamping device 6 below the workpiece 8, the clamping sheath 63 is embedded and installed in the clamping groove 64, the upper clamping plate 61 and the lower clamping plate 65 are arranged in parallel, the workpiece 8 is placed between the upper clamping plate 61 and the lower clamping plate 65 for fixing, the phenomenon that the workpiece 8 is in wrong welding position due to swinging during laser welding and loss are effectively prevented, one side of the welding arm 3 is provided with the chute 24, a worker holds the handle 22, slides the sliding block 23 arranged on one side of the connecting rod 21 in the chute 24 leftwards and rightwards, and cleans the welding arm 3 through the brush 25 arranged on the connecting rod 21, can effectually prevent that welding arm 3 from causing welding slag etc. to be stained with the damage that leads to welding arm 3 on welding arm easily in long-time use, improve the life-span, reduce the influence of outside to welding arm simultaneously.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (7)
1. An automatic laser welding arm comprises a supporting arm, a laser welding head and a protective gas injection head, wherein the laser welding head is arranged at the center of the inner part of the front end of the supporting arm, and at least one protective gas injection head is arranged at the position, located on the outer peripheral side of the laser welding head, of the front end of the supporting arm; it is characterized in that the preparation method is characterized in that,
the laser welding head is connected to the supporting arm by a welding oscillation mechanism, and the protective gas injection head is connected to the supporting arm by a swinging mechanism;
further comprising a controller arranged such that: when the laser welding head performs welding, the controller controls the welding oscillation mechanism to drive the laser welding head to perform reciprocating oscillation in the width direction of a welding seam; the controller also controls the laser welding head to swing along the welding feeding direction of the laser welding head under the driving of the swing mechanism;
the center of the supporting arm is provided with an accommodating cavity, the rear side of the accommodating cavity is provided with a controller, the inner side wall of the front part of the accommodating cavity is provided with a clamping pad, the inner side of the clamping pad is provided with an inner sleeve seat for fixing a laser welding head, the front end of the inner sleeve seat is provided with an elastic connecting sleeve, the rear end of the laser welding head is connected to the inner sleeve seat by adopting the elastic connecting sleeve, and the elastic connecting sleeve allows the laser welding head to oscillate within a certain angle range around the connection part of the laser welding head;
the inner side of the front end of the supporting arm is also provided with a clamping seat, the welding oscillating mechanism is fixedly sleeved on the clamping seat, the laser welding head penetrates forwards from the center of the welding oscillating mechanism, and the welding oscillating mechanism adopts an electromagnetic oscillation driving mechanism;
the front end of the supporting arm is located on the periphery of the laser welding head and is provided with at least one swinging mechanism, the output end of the swinging mechanism is connected with a protective gas injection pipe, the end part of the protective gas injection pipe is fixed with the protective gas injection head, and the injection angle of the protective gas injection pipe is driven by the swinging mechanism to swing.
2. An automated laser welding arm according to claim 1, wherein the oscillation frequency of the reciprocating oscillation of the welding oscillation mechanism is 30-1000Hz and the oscillation amplitude of the reciprocating oscillation is 90-110% of the weld width.
3. The automated laser welding arm of claim 1, wherein the swing drive mechanism is a cam swing mechanism, a link swing mechanism, or an electromagnetic swing drive mechanism, and the laser welding head extends forward by a length greater than a front length of the shielding gas spray head.
4. An automatic laser welding device is characterized in that the automatic laser welding device adopts an automatic laser welding arm as claimed in any one of claims 1 to 3, and further comprises a workbench, wherein a vertically extending working mechanism is fixedly arranged on the upper surface of the workbench, the welding arm is movably arranged on one side of the working mechanism, a cleaning device is arranged on the front surface side of the welding arm, a clamping device is fixedly arranged on the upper surface of the workbench, and a workpiece is fixedly arranged inside the clamping device.
5. The automatic laser welding device according to claim 4, wherein the cleaning device comprises a connecting rod, a handle, a sliding block, a sliding groove and a brush, the sliding block is slidably arranged inside the sliding groove, the connecting rod is arranged on one side of the sliding block, the brush is arranged below the connecting rod, the connecting rod is in a U-shaped arrangement, and the connecting rod and the sliding block are slidably arranged.
6. The automatic laser welding equipment according to claim 4, characterized in that the clamping device comprises an upper clamping plate, a vertical plate, a clamping sheath, a clamping groove and a lower clamping plate, the clamping sheath is embedded in the clamping groove, the lower clamping plate is fixedly arranged on the upper surface of the clamping sheath, the vertical plate is arranged above the lower clamping plate, and the upper clamping plate is arranged on one side of the vertical plate.
7. The automatic laser welding apparatus of claim 6, wherein the upper clamp is disposed perpendicular to the riser, the upper clamp is disposed parallel to the lower clamp, and the clamping sheath is disposed perpendicular to the lower clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910748341.XA CN110421256B (en) | 2019-08-14 | 2019-08-14 | Automatic laser welding arm |
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| CN201910748341.XA CN110421256B (en) | 2019-08-14 | 2019-08-14 | Automatic laser welding arm |
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| CN110421256A CN110421256A (en) | 2019-11-08 |
| CN110421256B true CN110421256B (en) | 2021-06-29 |
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| CN113245704B (en) * | 2021-07-07 | 2022-03-15 | 苏州迅镭激光科技有限公司 | Welding method of motor stator laser welding device |
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| WO2001076806A1 (en) * | 2000-04-10 | 2001-10-18 | Mitsubishi Heavy Industries, Ltd. | Welding system |
| ITTO20040361A1 (en) * | 2004-05-28 | 2004-08-28 | Comau Spa | METHOD AND DEVICE FOR REMOTE LASER WELDING USING A ROBOT, WITH SIMPLIFIED CONTROL OF THE FOCUSING DIRECTION OF THE LASER BEAM. |
| CN104308362B (en) * | 2014-08-27 | 2016-08-24 | 大族激光科技产业集团股份有限公司 | A kind of method of the carved punched part of laser welding |
| CN206047355U (en) * | 2016-07-29 | 2017-03-29 | 深圳市圆梦精密技术研究院 | Laser fuse equipment |
| CN107414293A (en) * | 2017-08-03 | 2017-12-01 | 大族激光科技产业集团股份有限公司 | A kind of periodic oscillations method for laser welding and weld assembly |
| CN109129025A (en) * | 2018-11-15 | 2019-01-04 | 广东铭利达科技有限公司 | A kind of battery involucrum gantry CNC intelligence production line |
| CN109604824B (en) * | 2019-01-08 | 2020-06-30 | 北华航天工业学院 | Welding head and welding method thereof |
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Address after: No. 1, Jiama Road, Luzhi Town, Wuzhong District, Suzhou City, Jiangsu Province, 215000 Patentee after: Suzhou Kemeite Equipment Integration Co.,Ltd. Address before: 215127 kemete equipment integration Co., Ltd., 89 Dongzhuang Road, Luzhi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU KEYMATE EQUIPMENT INTEGRATION CO.,LTD. |
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