Stator multi-head galvanometer laser welding equipment

Abstract

The utility model discloses stator multi-head galvanometer laser welding equipment, and relates to the field of laser welding processing, the stator multi-head galvanometer laser welding equipment comprises a bearing platform and a protective cover, one side of the protective cover is fixedly provided with a servo motor, the output end of the servo motor is fixedly provided with a plurality of fixed cross rods, the middle parts of the plurality of fixed cross rods are provided with cylinders, and the lower ends of the plurality of fixed cross rods are fixedly provided with dustproof covers; a conveying belt for conveying a stator workpiece to the middle of the galvanometer mechanism for laser welding is arranged on one side of the bearing platform, the galvanometer mechanism comprises a first fixed connecting piece fixedly arranged in an inner cavity of the dust cover, a laser galvanometer is fixedly arranged on one side of the first fixed connecting piece, double air knives are fixedly arranged on one side of the first fixed connecting piece, and a collimation camera is fixedly arranged on one side of the laser galvanometer. According to the method, the problems that the welding speed is low and rapid and continuous machining cannot be achieved due to broken welding, poor continuity and uneven and smooth welding seams are solved.

Description

Technical Field

[0001] This application relates to the field of laser welding processing, and in particular to stator multi-head galvanometer laser welding equipment. Background Technology

[0002] Welding, as a key technology for achieving permanent material joining, is widely used in machinery manufacturing, petrochemicals, bridges, shipbuilding, construction, power engineering, transportation vehicles, aerospace, and other fields, and has become an indispensable processing technology in modern industry. With the continuous development of the national economy, the application areas of welding technology will further expand, providing more efficient and reliable joining solutions for various industries.

[0003] Traditional single-head or handheld laser welding suffers from low efficiency and slow welding speed when dealing with large materials due to their large size and extended welding time. The welded surface is often uneven, with severe thermal deformation, requiring secondary grinding. Otherwise, the workpiece surface finish is poor, increasing labor costs. Furthermore, lasers pose risks to the operator's eyes and skin, necessitating protective measures and increasing operational complexity, potentially creating significant safety hazards. The additional secondary processing required by traditional single-head or handheld welding further exacerbates the problem, leading to excessively high labor and time costs. Traditional welding is also prone to interruptions, lacks continuity, and produces uneven and smooth welds. Finally, its slow speed prevents rapid processing. Utility Model Content

[0004] To improve the problems of incomplete welds, poor continuity, and uneven and smooth welds, which lead to slow welding speeds and the inability to achieve rapid and continuous processing, this application provides a stator multi-head galvanometer laser welding device.

[0005] The stator multi-head galvanometer laser welding equipment provided in this application adopts the following technical solution:

[0006] A stator multi-head galvanometer laser welding equipment includes a support platform and a protective cover. A servo motor is fixedly mounted on one side of the protective cover. Several fixed crossbars are fixedly mounted on the output end of the servo motor. A cylinder is fixedly installed through the middle of the crossbars. A dust cover for fixing several galvanometer mechanisms with the same structure and installation method is fixedly mounted on the lower end of the crossbars. A conveyor belt is provided on the middle of one side of the support platform to transport the stator workpiece to the middle of the galvanometer mechanism for laser welding.

[0007] Several galvanometer mechanisms are symmetrically arranged around the stator workpiece. Each galvanometer mechanism includes a fixed connector fixed in the inner cavity of the dust cover. A laser galvanometer for realizing laser scanning and deflection welding is fixed on one side of the fixed connector. A double air knife for cleaning the optical components inside the laser galvanometer is fixed on one side of the fixed connector. A collimating camera for connecting to a CCD camera interface is fixed on one side of the laser galvanometer.

[0008] By adopting the above technical solution, equipped with servo motors and conveyor belts, automatic conveying and positioning of stator workpieces can be achieved, improving production efficiency and automation level. In addition, the galvanometer mechanism is equipped with double air knives for cleaning the optical components inside the laser galvanometer, effectively preventing the accumulation of dust and impurities and protecting the performance and lifespan of the optical components. A collimating camera is fixed on one side of the laser galvanometer for connection with the CCD camera interface, realizing precise positioning and real-time monitoring of the welding position, improving the accuracy and reliability of welding.

[0009] Preferably, the galvanometer mechanism further includes a laser interface fixed to one side of the collimating camera and capable of connecting to a laser emitter.

[0010] By adopting the above technical solution, the laser interface can be used to establish a stable connection with optical fibers and lasers in a high-efficiency and reliable manner, thereby realizing the transmission of laser energy.

[0011] Preferably, one side of the dual air knife is fixedly provided with a second fixed connector that is fixedly connected to one side of the first fixed connector.

[0012] By adopting the above technical solution, connector 2 can help the dual air knife to be more stably connected to the laser galvanometer.

[0013] Preferably, a fixed connector three is fixedly provided on one side of the collimating camera and fixedly connected to one side of the fixed connector.

[0014] By adopting the above technical solution, the fixed connector three can fix the collimating camera to the fixed connector one, thereby making the collimating camera easy to disassemble while ensuring stable performance.

[0015] Preferably, the light emission processing range emitted from one side of several of the laser galvanometers can cover the support platform to locate the welding position.

[0016] By adopting the above technical solution, the processing range is used to determine the welding area of ​​the stator workpiece.

[0017] Preferably, the protective cover is provided with several dust removal devices with the same structure and installation method, and the dust removal devices are all used to remove the fumes generated during welding.

[0018] By adopting the above technical solution, welding will generate fumes, which will have a certain impact on the welding process. Dust removal equipment can remove these fumes.

[0019] Preferably, an electrical control cabinet is provided on one side of the support platform, and a laser storage rack for storing the galvanometer mechanism is fixed on the upper end of the electrical control cabinet.

[0020] By adopting the above technical solution, the electrical control cabinet can house PLCs and TCP controllers that control the entire device.

[0021] Preferably, a crossbeam for supporting the servo motor is fixed on one side of the protective cover.

[0022] By adopting the above technical solution, the crossbeam can effectively support the servo motor and other structures, thereby enabling the servo motor to operate stably.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By utilizing the collimating camera, laser galvanometer, and beam processing range in combination, stator workpieces within the scanning range can be quickly welded without moving the module, greatly reducing welding time. Furthermore, the laser beam acts on the material surface for instantaneous heating in a very short time, and the concentrated heat generates controllable minimum melting energy.

[0025] 2. Multi-face simultaneous welding is achieved with the help of a galvanometer mechanism. Multiple laser heads work together to weld multiple positions on the workpiece at the same time, which significantly improves production efficiency. Non-contact welding avoids contamination or damage caused by mechanical contact. Multi-head welding disperses heat input, further reducing the heat-affected zone and material deformation. Attached Figure Description

[0026] Figure 1 This is an overall schematic diagram of the present application;

[0027] Figure 2 This is a schematic diagram of the internal structure of the protective cover in this application;

[0028] Figure 3 This is a diagram showing the positional relationship between the galvanometer mechanism and the stator workpiece in this application;

[0029] Figure 4 This is a schematic diagram of the overall galvanometer mechanism of this application;

[0030] Figure 5 This is a schematic diagram of the cabinet and laser storage rack of this application.

[0031] Reference numerals: 100, support platform; 101, conveyor belt; 102, protective cover; 103, crossbeam; 104, servo motor; 105, fixed crossbar; 106, dust cover; 107, dust removal equipment; 108, electrical control cabinet; 109, laser storage rack; 110, stator workpiece; 111, cylinder;

[0032] 200. Galvanometer mechanism; 201. Laser galvanometer; 202. Fixed connector one; 203. Dual air knife; 204. Collimating camera; 205. Fixed connector two; 206. Fixed connector three; 207. Light output processing range; 208. Laser interface. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0034] This application discloses a stator multi-head galvanometer laser welding device.

[0035] Reference Figure 1 , Figure 2 , Figure 5 The stator multi-head galvanometer laser welding equipment includes a platform 100 placed on the ground and a protective cover 102 fixedly installed on the upper part of the platform 100. A crossbeam 103 is fixedly installed in the middle of the upper surface of the inner cavity of the protective cover 102, and a servo motor 104 is fixedly connected to the fixed end of the servo motor 104 in the middle of the lower surface of the crossbeam 103, thereby supporting the servo motor 104. The output end of the servo motor 104 is connected to an adapter plate (such as...) Figure 2 The adapter plate shown is U-shaped and fixedly connected to several fixed crossbars 105. The cylinder 111 is fixedly connected to the middle of the several fixed crossbars 105. The cylinder 111 extends through the middle of the several fixed crossbars 105. The several fixed crossbars 105 have the same structure, so that when the output end of the servo motor 104 rotates, it can drive the cylinder 111 and the fixed crossbars 105 to rotate together. Several dust covers 106 are fixedly installed on the lower part of the side of the several fixed crossbars 105 away from the servo motor 104. The several dust covers 106 have the same structure. A galvanometer mechanism 200 is provided in the inner cavity of each of the several dust covers 106. The several galvanometer mechanisms 200 are the same in structure and installation method.

[0036] Reference Figure 1 , Figure 2 , Figure 5The protective cover 102 is equipped with several dust removal devices 107 for removing welding fumes, and the dust removal devices 107 are identical in structure and installation method. A conveyor belt 101 is provided in the middle of the upper end of the support platform 100, and the conveyor belt 101 can transport the stator workpiece 110 to the middle of the galvanometer mechanism 200 for laser welding. An electrical control cabinet 108 is provided on one side of the support platform 100 and is located on the ground. A laser storage rack 109 for storing the galvanometer mechanism 200 is fixedly provided on the upper end of the electrical control cabinet 108.

[0037] It should be noted that the conveyor belt 101, servo motor 104, dust removal equipment 107, electrical control cabinet 108, stator workpiece 110, and cylinder 111 are all existing technologies, and their structural principles will not be elaborated here. Among them, the conveyor belt 101, dust removal equipment 107, and cylinder 111 need to be connected to PLC and other controllers. One end of cylinder 111 is fixedly connected to the rotating end of the air slip ring, while the fixed end of the air slip ring is suspended and connected to an external air pipe. The rotation angle between cylinder 111 and fixed crossbar 105 is 60°-80° to prevent the air pipe from getting tangled and affecting use. However, since they are all existing technologies, their structural principles will not be described in detail here.

[0038] The conveyor belt 101 can transport the stator workpiece 110, which is formed by stacking silicon steel sheets of 0.2 mm, to the middle of several galvanometer mechanisms 200. Then, the laser light can be introduced through the laser interface 208 in the galvanometer mechanism 200. The light introduced through the laser galvanometer 201 is refracted and irradiated on the surface of the stator workpiece 110 by the light output processing range 207 for welding. The output end of the servo motor 104 rotates, which in turn drives the fixed crossbar 105 to rotate. When the fixed crossbar 105 rotates, it drives the dust cover 106 to rotate, which in turn drives the galvanometer mechanism 200 to rotate, thereby adjusting the welding of the stator workpiece 110 at different angles.

[0039] During the welding process, fumes are generated. If the fumes are not removed in time, the laser transmittance will decrease and the energy will attenuate, thus affecting the welding effect. At this time, it is necessary to open the dust removal device 107 set on the protective cover 102 so that the fumes generated during the welding process can be removed.

[0040] Reference Figure 3 , Figure 4The galvanometer mechanism 200 includes a first fixing connector 202 fixedly disposed in the inner cavity of the dust cover 106, and the first fixing connector 202 is fixed to the laser galvanometer 201 by bolts on one side. The second fixing connector 205 is fixedly disposed on the side of the first fixing connector 202 away from the laser galvanometer 201 by bolts, and the third fixing connector 206 is fixedly disposed on the side of the second fixing connector 205 away from the laser galvanometer 201 by bolts. The second fixing connector 205 is fixed to the double air knife 203 by bolts on one side, and the double air knife 203 can clean the optical components inside the laser galvanometer 201.

[0041] Reference Figure 3 , Figure 4 The side of the fixed connector 206 away from the fixed connector 205 is fixedly connected to the collimating camera 204 by bolts. The collimating camera 204 is used to connect to the CCD camera interface. A laser interface 208 is provided on one side of the collimating camera 204, and the laser interface 208 can be connected to the laser emitter. The light emission processing range 207 emitted from one side of several laser galvanometers 201 can cover the surface of the stator workpiece 110, thereby being used to locate the welding position on the surface of the stator workpiece 110.

[0042] It should be noted that the laser galvanometer 201, the dual air knife 203, and the laser interface 208 are all existing technologies, and their structural principles will not be elaborated here. Furthermore, the laser connected to the laser interface 208 can be a fiber laser, but since it is existing technology, its structural principles will not be elaborated here.

[0043] The laser galvanometer 201 can precisely control the laser beam path, achieve high-speed welding, improve welding accuracy, adapt to complex welding needs, and perform dynamic focusing, among other functions. Furthermore, the advantages of galvanometer technology make the stator multi-head galvanometer laser welding equipment highly efficient, precise, flexible, and adaptable, meeting the demands of modern industrial production for high-quality, high-efficiency welding. The dual air knife 203 ensures the stability of the welding process and the quality of the weld by controlling the molten pool, protecting the weld, blowing away impurities and oxides, eliminating bubbles, and improving welding efficiency. The stator workpiece 110 guides the light to the scene on the CCD camera via the collimating camera 204, and then transmits the actual welding trajectory and position to the software via TCP communication through the PLC. The laser interface 208 can connect to the CCD camera interface through appropriate optical elements, thereby realizing the detection or analysis of the laser beam.

[0044] The implementation principle of the stator multi-head galvanometer laser welding equipment in this application embodiment is as follows: This equipment uses a fiber laser with a wavelength of 1064nm, which is effective for silicon steel, and the field lens (focusing lens) has a focal length of F=420mm. Initially, 0.2mm silicon steel sheets are stacked to form stator workpieces 110. Then, a conveyor belt 101 transports the stator workpieces 110 to the center of the welding area, which is the center of several galvanometer mechanisms 200. After the stator workpieces 110 are in place, the PLC issues a command to the output end of the cylinder 111 to fix and press the stator workpieces 110, ensuring that there are no gaps between the stator workpieces 110. Then, the laser beam emitted from one side of the laser galvanometer 201 through the processing range 207 provides the positioning welding position to the PLC, which then sends the actual welding trajectory and position to the software via TCP communication. After receiving the command, the software adjusts the welding process to appropriate parameters, and welding can then be performed (the welding trajectory is within the scanning range and the galvanometer mechanism 200 does not need to be moved). During the welding process, the dust removal equipment 107 is turned on to remove the welding fumes.

[0045] During the welding process, it is important to set precise process parameters at the start and end points to ensure that the weld appearance is free from collapse and over-welding.

[0046] The power density is highest at the laser's focal point. There are two defocusing methods: positive defocus and negative defocus. When the focal point is above the silicon steel sheet plane, it is called positive defocus; when the focal point is below the silicon steel sheet plane, it is called negative defocus. When the positive and negative defocus planes are equidistant from the welding plane, the power density on the welding plane is approximately the same. Positive defocus can achieve a smaller penetration depth, while negative defocus can achieve a larger penetration depth. The actual welding parameters need to be determined based on the welding effect achieved.

[0047] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A stator multi-head galvanometer laser welding equipment, characterized in that: The system includes a support platform (100) and a protective cover (102). A servo motor (104) is fixedly mounted on one side of the protective cover (102). Several fixed crossbars (105) are fixedly mounted on the output end of the servo motor (104). A cylinder (111) is fixedly installed through the middle of the crossbars (105). A dust cover (106) for fixing several galvanometer mechanisms (200) with the same structure and installation method is fixedly mounted on the lower end of the crossbars (105). A conveyor belt (101) is provided on the middle of one side of the support platform (100) to transport the stator workpiece (110) to the middle of the galvanometer mechanism (200) for laser welding. Several galvanometer mechanisms (200) are symmetrically arranged around the stator workpiece (110). Each galvanometer mechanism (200) includes a fixed connector (202) fixed in the inner cavity of the dust cover (106). A laser galvanometer (201) for realizing laser scanning and deflection welding is fixed on one side of the fixed connector (202). A double air knife (203) for cleaning the optical devices inside the laser galvanometer (201) is fixed on one side of the fixed connector (202). A collimating camera (204) for connecting to the CCD camera interface is fixed on one side of the laser galvanometer (201).

2. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: The galvanometer mechanism (200) also includes a laser interface (208) fixed on one side of the collimating camera (204) and capable of connecting to the laser emitter.

3. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: One side of the double air knife (203) is fixedly provided with a second fixed connector (205) which is fixedly connected to one side of the first fixed connector (202).

4. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: The collimating camera (204) is fixedly provided with a fixed connector three (206) which is fixedly connected to a fixed connector one (202) on one side.

5. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: The light emission processing range (207) emitted from one side of several laser galvanometers (201) is used to cover the stator workpiece (110) to locate the welding position.

6. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: The protective cover (102) is equipped with several dust removal devices (107) with the same structure and installation method. The dust removal devices (107) are all used to remove the fumes generated during welding.

7. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: An electrical control cabinet (108) is provided on one side of the support platform (100), and a laser storage rack (109) for storing the galvanometer mechanism (200) is fixed on the upper end of the electrical control cabinet (108).

8. The stator multi-head galvanometer laser welding equipment according to claim 1, characterized in that: A crossbeam (103) for supporting the servo motor (104) is fixed on one side of the protective cover (102).

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