CN214769681U

CN214769681U - Laser welding system

Info

Publication number: CN214769681U
Application number: CN202120852069.2U
Authority: CN
Inventors: 张琛; 刘秋越; 张力文; 周游
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-19
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a laser welding system, include: a laser welding robot and a remote operation terminal; the laser welding robot includes: the device comprises a base, a mechanical arm, a walking assembly, a welding head assembly, an image acquisition device and a lifting electromagnetic chuck assembly; the walking component is arranged at the bottom of the base; the mechanical arm is arranged at the top of the base; the welding head assembly is arranged on the mechanical arm; an optical fiber for transmitting laser is arranged on a welding head of the welding head assembly; the image acquisition device is arranged on the welding head assembly; the lifting electromagnetic chuck assembly is arranged at one end of the base; and the remote operation terminal is electrically connected with the first driving motor of the mechanical arm, the second driving motor of the welding head assembly, the driving mechanism of the walking assembly, the image acquisition device and the lifting electromagnetic chuck assembly. The utility model discloses satisfy the demand of different operational environment, expanded laser welding robot's use scene. The laser welding robot does not need manual work on the welding site, and is suitable for working by using the laser welding robot in an extreme environment.

Description

Laser welding system

Technical Field

The utility model belongs to the technical field of laser welding, concretely relates to laser welding system.

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 welding machine mainly comprises five modules, which are divided into an optical system, a control system, a motion system, a laser power supply and a cooling system, wherein the laser radiation heats the surface of a workpiece, the surface heat is diffused inwards through heat conduction, and the workpiece is melted by controlling parameters such as the width, the energy, the power density, the repetition frequency and the like of laser pulses to form a specific molten pool.

Laser welding techniques have been widely used in various industrial manufacturing fields. In recent years, with rapid development of industries such as new energy automobiles and 3D printing, laser precision welding has become a new demand in the market. The laser welding machine technology is firstly applied to manufacturing of airframes in the middle of the 80 th of the 20 th century, is applied to manufacturing of ships in the middle of the 90 th of the year, and is applied to manufacturing of airframes of A380 large-sized airplanes in the beginning of the 21 st of the century. The airbus uses the laser welding technology to replace riveting, successfully achieves the aim of reducing the weight of the airplane by 20 percent, and makes pioneering contribution to the application of laser.

At present, most of the market uses manual arc welding, and of course, laser welding machines are used, and the most traditional optical fiber conduction laser welding machine is used for welding in a difficult-to-contact working environment. However, the entire laser welding machine cannot move, cannot reach a required welding position, and cannot meet the requirements of different working environments. Meanwhile, the existing laser welding machine technology cannot replace part of manual arc welding operation due to factors such as high maneuverability requirement, low energy conversion rate and the like, and manual welding is required on an operation site, so that welding cannot be performed under some extreme environment regulation.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a laser welding system. The to-be-solved technical problem of the utility model is realized through following technical scheme:

a laser welding system, comprising: a laser welding robot and a remote operation terminal;

the laser welding robot includes: the device comprises a base, a mechanical arm, a walking assembly, a welding head assembly, an image acquisition device and a lifting electromagnetic chuck assembly;

the walking assembly is arranged at the bottom of the base;

the mechanical arm is arranged at the top of the base;

the welding head assembly is arranged on the mechanical arm; an optical fiber for transmitting laser is arranged on a welding head of the welding head assembly;

the image acquisition device is arranged on the welding head assembly;

the lifting electromagnetic chuck assembly is arranged at one end of the base;

the remote operation terminal is electrically connected with the first driving motor of the mechanical arm, the second driving motor of the welding head assembly, the driving mechanism of the walking assembly, the image acquisition device and the lifting electromagnetic chuck assembly.

In an embodiment of the present invention, the walking assembly includes: a plurality of road wheels and the drive mechanism;

the driving mechanism is arranged on the bottom of the base and is connected with the travelling wheels;

the traveling wheel is internally provided with an electromagnet structure;

the electromagnet structure is electrically connected with the remote operation terminal.

In an embodiment of the present invention, the remote operation terminal includes: the device comprises an analog-to-digital converter, an image processor, a memory, a microcontroller and a display;

the analog-to-digital converter is electrically connected with the image acquisition device;

the image processor is electrically connected with the analog-to-digital converter and the memory;

the microcontroller is electrically connected with the image processor, the memory, the display, the first driving motor, the second driving motor, the driving mechanism, the image acquisition device, the electromagnet structure and the lifting electromagnetic sucker component.

In an embodiment of the present invention, the present invention further includes: a laser generator;

and the laser generator is connected with one end of the optical fiber and is electrically connected with the microcontroller.

In one embodiment of the present invention, the single core diameter of the optical fiber is 8.2 μm; the fatigue resistance parameter of the optical fiber is 20; the zero dispersion slope of the optical fiber is 0.088 ps/(nm)²Km), the effective group index of the fiber is 1310 nm: 1.4676, 1550 nm: 1.4682.

in an embodiment of the present invention, the lifting electromagnetic chuck assembly includes: at least one lifting driving piece and an electromagnetic chuck;

the lifting driving piece is electrically connected with the microcontroller, a fixed end is fixedly connected with the bottom of the base, and a telescopic end is fixedly connected with the disc surface of the electromagnetic chuck;

the electromagnetic chuck is electrically connected with the microcontroller, and the disk surface can be in contact with the walking surface of the walking wheel.

In an embodiment of the present invention, the lifting drive member includes: an electric telescopic rod.

In an embodiment of the present invention, the robot arm includes: the fixed arm, the rotating shaft, the movable arm and the first driving motor;

one end of the fixed arm is fixedly connected with the top of the base, and the other end of the fixed arm is rotatably connected with the rotating shaft;

the rotating shaft is fixedly connected with one end of the movable arm, and the long shaft is parallel to the top of the base;

the other end of the movable arm is connected with the welding head assembly;

the first driving motor is fixedly arranged on the fixed arm, and an output shaft is fixedly connected with one end of the rotating shaft.

The utility model has the advantages that:

the utility model discloses a walking subassembly drives the base and removes, and then can remove required position with arm and bonding tool subassembly to it is fixed with laser welding robot through lift electromagnetic chuck subassembly, and the arm of operating again and bonding tool subassembly move required angle and carry out welding operation, consequently, laser welding robot can wait that the welded surface walks and fix, satisfies the demand of different operational environment, has expanded laser welding robot's use scene. Simultaneously, the laser welding robot is controlled through the remote operation terminal, need not artifical at the welding site operation, is applicable to and uses the laser welding robot to carry out the operation under extreme environment, and the simple operation. In addition, laser welding robot can fix through the lift electromagnetic chuck subassembly and treat the welding surface, has improved the stability among the welding process, consequently, has promoted the welding effect.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of a laser welding system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a laser welding robot provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a laser welding robot provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a remote operation terminal provided in an embodiment of the present invention.

Description of reference numerals:

10-a remote operation terminal; 11-an analog-to-digital converter; 12-an image processor; 13-a memory; 14-a microcontroller; 15-a display; 20-a base; 30-a mechanical arm; 31-a fixed arm; 32-a rotating shaft; 33-a movable arm; 34-a first drive motor; 35-a chute; 40-a walking component; 41-walking wheels; 50-a weld head assembly; 51-a second drive motor; 52-moving seat; 53-a welding head; 60-an image acquisition device; 70-lifting electromagnetic chuck assembly; 71-a lifting drive; 72-electromagnetic chuck; 80-optical fiber.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.

Example one

Referring to fig. 1, a laser welding system includes: a laser welding robot and a remote operation terminal 10. The laser welding robot includes: the device comprises a base 20, a mechanical arm 30, a walking assembly 40, a welding head assembly 50, an image acquisition device 60 and a lifting electromagnetic chuck assembly 70. The running assembly 40 is disposed at the bottom of the base 20. A robotic arm 30 is disposed atop the base 20. The horn assembly 50 is disposed on the robotic arm 30. The horn 53 of the horn assembly 50 is provided with an optical fiber 80 for transmitting laser light. The image capture device 60 is fixedly disposed on the horn assembly 50. The elevating electromagnetic chuck assembly 70 is disposed at one end of the base 20. The remote operation terminal 10 is electrically connected with the first driving motor 34 of the robot arm 30, the second driving motor 51 of the welding head assembly 50, the driving mechanism of the walking assembly 40, the image acquisition device 60 and the lifting electromagnetic chuck assembly 70.

In this embodiment, the base 20 is driven by the traveling assembly 40 to move, so that the mechanical arm 30 and the welding head assembly 50 can be moved to a desired position, the laser welding robot is fixed by the lifting electromagnetic chuck assembly 70, and then the mechanical arm 30 and the welding head assembly are operated to move to a desired angle and the welding head 53 of the welding head assembly 50 is positioned at a position to be welded to perform welding operation. When the laser welding robot is used, the laser welding robot can walk and fix the surface to be welded, particularly can walk on the surface with unevenness and radian, can operate the lifting electromagnetic chuck component 70 to extend out to contact with the surface to be welded after reaching a required position, and attract the lifting electromagnetic chuck component to be welded on the surface to be welded, so that the laser welding robot is fixed on the required position, and then the mechanical arm 30 and the welding head component are operated to move to carry out small-range moving welding operation.

In this embodiment, the laser welding robot can move and carry out the operation on required position, and it is very convenient to use, and lift electromagnetic chuck subassembly 70 can produce magnetic force, and the laser welding robot is comparatively firmly stabilized on the working surface under the effect of magnetic force, provides more stable operational environment for welding process, can improve welded accuracy.

The robot arm 30 can swing up and down under the driving of the first driving motor 34, and the welding head assembly 50 can make reciprocating linear motion under the driving of the second driving motor 51.

Meanwhile, the laser welding robot of the present embodiment is controlled by the remote operation terminal 10. The image near the welding head assembly 50 acquired by the image acquisition device 60 is transmitted to the remote operation terminal 10 for display, and the user can correspondingly control the walking assembly 40, the lifting electromagnetic chuck assembly 70 and the welding head assembly 50 by viewing the image. Specifically, the user can operate the walking assembly 40 to work by viewing the image, and when the laser robot reaches a required position by viewing the image, the lifting electromagnetic chuck assembly 70 is operated to enable the lifting electromagnetic chuck assembly 70 to be adsorbed on the surface of the working area, and then the mechanical arm 30 and the welding head assembly 50 can be operated to move to perform welding operation.

The laser welding robot of this embodiment can adsorb in the space flight and aviation equipment or in extreme environment such as nuclear power station, large-scale equipment maintenance station or the place that danger coefficient is high on the equipment top layer under high altitude, vacuum environment to carry out weldment work through remote operation, degree of automation is higher, and the commonality is stronger, and the simple operation just has improved user's security.

In a feasible implementation mode, the laser welding robot can adapt to changeable environments, non-contact remote welding is implemented, the flexibility is higher, manual work is replaced, the parts to be welded are positioned and welded, and the welding precision is greatly improved while the workload is reduced.

In one possible implementation, the image capturing Device 60 may be a camera with a CCD (Charge-coupled Device) image sensor or a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor built in.

Further, a laser welding system further comprises: a laser generator. And a laser generator connected to one end of the optical fiber 80, the laser generator being electrically connected to the remote operation terminal 10. One end of the optical fiber 80 is the laser input end and the other end is located within the horn 53 of the welding assembly as the laser output end.

In the present embodiment, the optical fiber 80 is a multicore optical fiber 80, and the single core diameter of the optical fiber 80 is 8.2 μm. Whether the optical fiber 80 can conduct high-power laser mainly looks at the diameter of the fiber core, the fiber core of the embodiment is thin, and a large number of fiber cores can be carried in the cladding within the same diameter range, so that the optical fiber 80 of the embodiment can bear more laser energy, and the laser welding machine can be applied to a use scene with high energy demand.

The fatigue resistance parameter of the optical fiber 80 is 20. The optical fiber 80 is bent at multiple angles when being transmitted to the position which is difficult to contact, so that the energy transmission efficiency is reduced in the process, and the bending range of the optical fiber 80 between the laser generator and the welding head 53 is large, so that the laser generator can be suitable for welding in a more complicated space.

The zero dispersion slope of the fiber 80 is 0.088 ps/(nm)²Km), the effective group index of the fiber 80 is 1310 nm: 1.4676, 1550 nm: 1.4682. the laser is transmitted in the optical fiber 80 in a refraction mode, so that a large amount of energy is lost due to the fact that the energy cannot be refracted to a specified position, the optical fiber 80 of the embodiment expands a laser refraction range, the loss of the laser is reduced, and the transmission efficiency of the laser can be improved.

The optical fiber 80 of the embodiment has strong elasticity, plays a certain buffering role in self deformation, reduces light loss when penetrating into small parts and various complex welding seams for welding, enlarges the working range of the optical fiber 80 and improves the energy conversion efficiency.

Further, as shown in fig. 2, the walking assembly 40 includes: a plurality of road wheels 41 and a drive mechanism. The driving mechanism is arranged on the bottom of the base 20 and is connected with the travelling wheels 41. The traveling wheel 41 is internally provided with an electromagnet structure. The electromagnet structure is electrically connected to the remote operation terminal 10. In this embodiment, the electromagnet structure can be controlled to be turned on or off by the remote operation terminal 10. The electromagnet structure generates magnetic force when being electrified, the magnetic force is conducted to the walking wheels 41, and the walking wheels 41 can generate certain magnetism, so that certain adsorption can be formed on the walking surface when the walking is carried out on the uneven surface or the surface with slope, and therefore the walking wheels 41 can walk on the walking surface stably, and the walking wheels 41 are prevented from leaving the walking surface to cause side-turning collision.

In a possible implementation manner, the traveling wheel 41 may be made of a magnetic conductive material, and the magnetic force generated by the electromagnet structure may be conducted to the traveling wheel 41. The driving mechanism comprises a motor, a transmission shaft, a differential mechanism and the like, the transmission shaft is connected with the two walking wheels 41, and the driving mechanism can drive the walking wheels 41 to rotate to walk or turn. The walking wheel 41 is disposed at one end of the base 20, and a universal supporting wheel is disposed at the other end of the base 20, the universal supporting wheel is rotatably connected with a mounting wheel frame, and the mounting wheel frame is fixedly disposed on the base 20.

Further, as shown in fig. 4, the remote operation terminal 10 includes: analog-to-digital converter 11, image processor 12, memory 13, microcontroller 14 and display 15. The analog-to-digital converter 11 is electrically connected to the image acquisition device 60. The image processor 12 is electrically connected to the analog-to-digital converter 11, and the image processor 12 is electrically connected to the memory 13. The microcontroller 14 is electrically connected with the image processor 12, the memory 13, the display 15, the first drive motor 34, the second drive motor 51, the drive mechanism, the image acquisition device 60, the electromagnet structure and the lifting electromagnetic chuck assembly 70.

In this embodiment, the image acquisition device 60 inputs an image to the analog-to-digital converter 11 through the CCD/CMOS image sensor, the analog-to-digital converter 11 converts an analog image signal into a digital image signal and sends the digital image signal to the image processor 12, the image processor 12 performs compression processing, the digital image signal is processed by the memory 13 and the microcontroller 14, and the digital image signal is finally displayed on the display 15 to provide a monitoring function for a user. The image acquisition device adopting the CCD/CMOS image sensor can adapt to various environments, has strong universality, can detect products with different material numbers by replacing different detection jigs, and avoids eyestrain.

In a possible implementation manner, the remote operation terminal 10 may be electrically connected with each component through a wired electrical connection, and a user operating the remote operation terminal 10 may control each component to perform corresponding operations. The microcontroller 14 can control the first driving motor 34 to work, and then the first driving motor 34 drives the robot arm 30 to move, the microcontroller 14 can control the second driving motor 51 to work, and then the second driving motor 51 drives the welding head assembly 50 to move, the microcontroller 14 can control the driving mechanism to work, and then the driving mechanism drives the traveling wheels 41 to rotate, the microcontroller 14 can control the on-off of the electromagnet structure, and the microcontroller 14 can control the lifting and the on-off of the electromagnetic chuck 72 assembly and the like. The microcontroller 14 is electrically connected to the laser generator and can control the laser generator to turn on or off.

Further, as shown in fig. 2 and 3, the lifting electromagnetic chuck assembly 70 includes: at least one lifting drive 71 and an electromagnetic chuck 72. The lifting driving member 71 is electrically connected to the microcontroller 14, a fixed end of the lifting driving member 71 is fixedly connected to the bottom of the base 20, and a telescopic end of the lifting driving member 71 is fixedly connected to a disk surface of the electromagnetic chuck 72. The electromagnetic chuck 72 is electrically connected with the microcontroller 14, and the disk surface of the electromagnetic chuck 72 can be contacted with the walking surface of the walking wheel 41. In this embodiment, after laser welding robot walked to target in place, can control lift driving piece 71 and stretch out and descend electromagnet 72, after electromagnet 72 and walking face contact, can control the electro-magnet circular telegram in electromagnet 72 through remote operation terminal 10, at this moment, electromagnet 72 produces magnetic force, adsorbs on the walking face, can fix laser welding robot on required position firmly. When laser welding robot need remove to other positions and weld, can control the electro-magnet outage among the electromagnet 72, at this moment, electromagnet 72's magnetic force disappears, withdraws lift driving piece 71 again, then control walking wheel 41 walk can.

In one possible implementation, the lifting drive 71 is an electric telescopic rod.

In a possible implementation, the lifting drive 71 can also be a hydraulic or pneumatic telescopic device. Such as a hydraulic pump and a hydraulic telescopic rod, an air pump and an air cylinder, and the microcontroller 14 controls the relevant components to make the hydraulic telescopic rod or the air cylinder move telescopically.

Further, as shown in fig. 2 and 3, the robot arm 30 includes: a fixed arm 31, a rotating shaft 32, a movable arm 33 and a first driving motor 34. One end of the fixing arm 31 is fixedly connected with the top of the base 20, and the other end of the fixing arm 31 is rotatably connected with the rotating shaft 32. The rotating shaft 32 is fixedly connected with one end of the movable arm 33, and the long axis of the rotating shaft 32 is parallel to the top of the base 20. The rotation shaft 32 is transversely disposed. The other end of the moveable arm 33 is connected to a weld head assembly 50. The first driving motor 34 is fixedly arranged on the fixing arm 31, and an output shaft of the first driving motor 34 is fixedly connected with one end of the rotating shaft 32.

In this embodiment, the first driving motor 34 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the movable arm 33 to swing away from or close to the position to be welded by using the rotating shaft 32 as a swing shaft, thereby driving the welding head assembly 50 to move therewith.

Of course, the movement of the movable arm 33 can also be implemented by other prior art structures, and will not be described in detail herein.

In one possible implementation, as shown in fig. 2 and 3, the horn assembly 50 includes: a second drive motor 51, a welding head 53, a moving seat 52, a screw rod and a slide nut. The other end of the movable arm 33 is provided with a sliding groove 35, the long axis of the sliding groove 35 is parallel to the axial direction of the rotating shaft 32, the screw rod is arranged in the sliding groove 35, two ends of the screw rod are rotatably connected with two ends of the sliding groove 35, the sliding nut is in threaded connection with the screw rod, the sliding nut is in sliding connection with the inner side wall of the sliding groove 35, the moving seat 52 is fixed on the sliding nut, the second driving motor 51 is fixed on the movable arm 33, and the output shaft of the second driving motor 51 is fixedly connected with one end of the screw rod. The optical fiber 80 is connected to the welding head 53, the welding head 53 is fixed on the moving base 52, and the image capturing device 60 is disposed on the moving base 52 near the welding head 53. The lens of the image pickup device 60 faces the front side range of the horn 53. In this embodiment, the second driving motor 51 drives the screw rod to rotate, and further drives the sliding nut to move along the axial direction of the screw rod, so that the moving seat 52 and the welding head 53 move along with the sliding nut. The second driving motor 51 rotates forward and backward, and the welding head 53 can reciprocate linearly.

Of course, the movement of the horn assembly 50 may be reciprocating using other prior art configurations and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A laser welding system, comprising: a laser welding robot and a remote operation terminal (10);

the laser welding robot includes: the device comprises a base (20), a mechanical arm (30), a walking assembly (40), a welding head assembly (50), an image acquisition device (60) and a lifting electromagnetic chuck assembly (70);

the walking assembly (40) is arranged at the bottom of the base (20);

the mechanical arm (30) is arranged on the top of the base (20);

the welding head assembly (50) is arranged on the mechanical arm (30); an optical fiber (80) for transmitting laser is arranged on the welding head (53) of the welding head assembly (50);

the image acquisition device (60) is arranged on the welding head assembly (50);

the lifting electromagnetic sucker assembly (70) is arranged at one end of the base (20);

the remote operation terminal (10) is electrically connected with a first driving motor (34) of the mechanical arm (30), a second driving motor (51) of the welding head assembly (50), a driving mechanism of the walking assembly (40), the image acquisition device (60) and the lifting electromagnetic chuck assembly (70).

2. A laser welding system according to claim 1, characterized in that said walking assembly (40) comprises: a plurality of road wheels (41) and the drive mechanism;

the driving mechanism is arranged on the bottom of the base (20) and is connected with the travelling wheels (41);

the travelling wheel (41) is internally provided with an electromagnet structure;

the electromagnet structure is electrically connected with the remote operation terminal (10).

3. A laser welding system according to claim 2, characterized in that said remote operation terminal (10) comprises: the device comprises an analog-to-digital converter (11), an image processor (12), a memory (13), a microcontroller (14) and a display (15);

the analog-to-digital converter (11) is electrically connected with the image acquisition device (60);

the image processor (12) is electrically connected with the analog-to-digital converter (11) and the memory (13);

the microcontroller (14) is electrically connected with the image processor (12), the memory (13), the display (15), the first driving motor (34), the second driving motor (51), the driving mechanism, the image acquisition device (60), the electromagnet structure and the lifting electromagnetic sucker component (70).

4. A laser welding system as recited in claim 3, further comprising: a laser generator;

the laser generator is connected with one end of the optical fiber (80) and is electrically connected with the microcontroller (14).

5. A laser welding system according to claim 3, characterized in that the individual core diameter of the optical fiber (80) is 8.2 μm; the fatigue resistance parameter of the optical fiber (80) is 20; the zero dispersion slope of the optical fiber (80) is 0.088 ps/(nm)²Km), the effective group refractive index of the optical fiber (80) is 1310 nm: 1.4676, 1550 nm: 1.4682.

6. a laser welding system according to claim 4, characterized in that said lifting electromagnetic chuck assembly (70) comprises: at least one lifting drive (71) and an electromagnetic chuck (72);

the lifting driving piece (71) is electrically connected with the microcontroller (14), a fixed end is fixedly connected with the bottom of the base (20), and a telescopic end is fixedly connected with the disc surface of the electromagnetic chuck (72);

the electromagnetic chuck (72) is electrically connected with the microcontroller (14), and the disk surface can be contacted with the walking surface of the walking wheel (41).

7. A laser welding system according to claim 6, characterized in that the lifting drive (71) comprises: an electric telescopic rod.

8. A laser welding system according to claim 7, characterized in that said robot arm (30) comprises: a fixed arm (31), a rotating shaft (32), a movable arm (33) and the first driving motor (34);

one end of the fixed arm (31) is fixedly connected with the top of the base (20), and the other end of the fixed arm is rotatably connected with the rotating shaft (32);

the rotating shaft (32) is fixedly connected with one end of the movable arm (33), and the long shaft is parallel to the top of the base (20);

the other end of the movable arm (33) is connected with the welding head assembly (50);

the first driving motor (34) is fixedly arranged on the fixed arm (31), and an output shaft is fixedly connected with one end of the rotating shaft (32).