Laser welding machine for side electrode panels

Abstract

The application relates to the technical field of laser welding processing, and particularly discloses a laser welding machine for a side electrode panel, which comprises a control cabinet, which is a square cabinet with welding control system elements; a workbench is arranged on the top surface of the control cabinet; and mounting holes are equidistantly arranged on the workbench. The laser welding machine for the side electrode panel comprises an X-axis linear sliding table, a Y-axis linear sliding table and a Z-axis linear sliding table, which respectively form horizontal two-dimensional movement axes and vertical movement axes; a rotary swing frame driven by a rotary servo motor I is arranged to realize swing around the horizontal axes; a side electrode welding fixture driven by a rotary servo motor II is arranged to rotate around the vertical axes; an X / Y / Z translational motion and a double-rotation multi-degree-of-freedom composite motion system is formed; the optical axis of a CCD visual positioning camera intersects with the laser beam optical axis of a laser welding output head in a welding work area on the side electrode welding fixture, visual guidance and accurate positioning of the welding position are realized, and the welding precision and consistency of the side electrode panel are improved.

Description

Technical Field

[0001] This invention relates to the field of laser welding processing technology, specifically to a laser welding machine for a side electrode panel. Background Technology

[0002] Laser welding machines, as a mature modern processing equipment, have been widely used for the precision joining of various metal parts. Existing laser welding machines, in conjunction with contour jigs, complete the welding of side electrode studs. During operation, a vibratory feeder feeds the studs, and the side electrode products are manually loaded into the contour jig. A foot switch triggers the welding output, and after welding, the workpiece is manually removed and placed into a transfer cleaning drum for subsequent full inspection. The entire system is equipped with a welding parameter display interface, allowing setting of process parameters such as welding power and pulse duration. The jig cover plate ensures the positioning and clamping of the workpiece and stud. It is the mainstream welding processing equipment for mass production of side electrodes. However, existing side electrode panel laser welding equipment has some shortcomings in actual production use, such as: Because the laser spot size is small and the weld seam is narrow after laser focusing, laser welding requires that the position of the beam on the workpiece cannot be significantly deviated. However, the side electrode panel is a thin plate workpiece, which is extremely thin and easily deformed. The welding fixtures of existing laser welding equipment are mostly of general design, which makes it difficult to achieve precise positioning and stable clamping of the workpiece during the welding process. In addition, the welding heads of existing laser welding machines are mostly fixed or only have a single axial adjustment function, which has low positioning accuracy, is difficult to adjust, and is difficult to adapt to different welding positions of the side electrode panel.

[0003] To address the aforementioned issues, there is an urgent need for innovative design based on the existing laser welding machine for side electrode panels. Summary of the Invention

[0004] The purpose of this invention is to provide a laser welding machine for side electrode panels, in order to solve the problems mentioned in the background art, which are that due to the extremely thin and easily deformable material of the side electrode panel, the welding fixtures of existing laser welding equipment are mostly of general design, making it difficult to achieve precise positioning and stable clamping of the workpiece during the welding process. Furthermore, the welding heads of existing laser welding machines are mostly fixed or only have a single axial adjustment function, resulting in low positioning accuracy, difficulty in debugging, and difficulty in adapting to different welding positions of the side electrode panel.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser welding machine for a side electrode panel, comprising a control cabinet, which is a square cabinet with welding control system components, wherein a worktable is mounted on the top surface of the control cabinet, and mounting holes are equidistantly provided on the worktable. The upper surface of the worktable is equipped with an X-axis linear slide and a vertical threaded lifting column, and the X-axis linear slide and the vertical threaded lifting column are installed in a staggered manner. A Y-axis linear slide is installed on the slide of the X-axis linear slide, and a Z-axis linear slide is installed on the slide of the Y-axis linear slide. A mounting back plate is installed on the slide of the Z-axis linear slide, and a rotary servo motor is mounted on the mounting back plate. The vertical threaded lifting column has a connecting cantilever mounted on its slide, and a connecting arm is fixedly mounted on the connecting cantilever. A laser generator and a CCD vision positioning camera are mounted on the connecting arm. The laser generator has a laser welding output head at its emitting end, and the CCD vision positioning camera is mounted on the connecting arm via a camera mounting bracket.

[0006] Using the above technical solution, a three-axis linkage motion system is formed by the X-axis linear slide, the Y-axis linear slide, and the Z-axis linear slide. Combined with the lifting and adjusting of the vertical threaded lifting column, the laser welding output head can be precisely positioned in three-dimensional space.

[0007] Preferably, the control cabinet is electrically connected to the X-axis linear slide, Y-axis linear slide, Z-axis linear slide, rotary servo motor one, rotary servo motor two, laser generator and CCD vision positioning camera respectively.

[0008] By adopting the above technical solution, all moving, welding and vision components are linked by a unified electrical signal control cabinet, thus achieving integrated automatic control of the equipment.

[0009] Preferably, the X-axis linear slide, Y-axis linear slide, and Z-axis linear slide are all ball screw linear modules driven by servo motors, and the X-axis linear slide and Y-axis linear slide constitute a two-dimensional planar motion axis, while the Z-axis linear slide constitutes a vertical motion axis.

[0010] The above technical solution uses a three-axis servo ball screw module to form a three-dimensional motion adjustment structure, which has higher displacement adjustment accuracy and smoother operation compared with the traditional single-axis fixed adjustment structure.

[0011] Preferably, the output end of the rotary servo motor is equipped with a rotary swing frame, and a fixture connecting frame is installed on the rotary swing frame.

[0012] By adopting the above technical solution and adding a rotary servo motor in conjunction with a rotary swing frame structure, the overall pitch angle of the fixture can be adaptively adjusted. Without the need for manual disassembly and reassembly of the workpiece, the laser welding angle can be matched, avoiding the damage to the thin plate caused by repeated clamping.

[0013] Preferably, the fixture connecting frame is provided with a second rotary servo motor, and the output end of the second rotary servo motor is equipped with a side electrode welding fixture.

[0014] Using the above technical solution, the welding fixture is rotated circumferentially by two-drive side electrodes via a rotary servo motor, and combined with a pitching and oscillating structure to form a multi-degree-of-freedom workpiece displacement function.

[0015] Preferably, the vertical threaded lifting column is a screw-driven column, and the screw of the vertical threaded lifting column is connected to the adjusting handwheel.

[0016] Using the above technical solution, the vertical threaded lifting column, together with the adjusting handwheel, enables manual and precise lifting and lowering adjustment of the laser mechanism, allowing for fine-tuning of the laser welding height according to different plate thicknesses and welding focal length requirements.

[0017] Preferably, the connecting arm is arranged parallel to the installation direction of the Y-axis linear slide, and the connecting arm and the auxiliary support together form an L-shaped structure.

[0018] Using the above technical solution, the connecting arm is arranged parallel to the Y-axis slide and forms an L-shaped support structure with the auxiliary bracket, resulting in strong overall support rigidity and uniform force distribution.

[0019] Preferably, the laser generator is a fiber laser, and the laser welding output head is connected to the laser generator optical path via an optical fiber.

[0020] The above technical solution employs a fiber laser generation and transmission structure, which results in low laser transmission loss, stable light output, uniform light spot, and a smaller heat-affected zone during welding. For ultra-thin side electrode panels, it can effectively reduce welding thermal deformation and ensure the consistency of workpiece appearance flatness and welding strength.

[0021] Preferably, the laser generator housing is provided with a downward-facing auxiliary support, and the auxiliary support is arranged parallel to the laser welding output head.

[0022] By adopting the above technical solution, the auxiliary bracket extends downward and is arranged parallel to the laser welding output head, providing a stable and parallel assembly benchmark for the installation of the vision camera, ensuring that the vision shooting direction is highly matched with the laser welding direction, eliminating positioning deviations caused by assembly offsets, and providing reliable mechanical structural support for precise alignment.

[0023] Preferably, the optical axis of the CCD visual positioning camera intersects with the optical axis of the laser beam of the laser welding output head in the side electrode welding working area on the side electrode welding fixture.

[0024] By adopting the above technical solution, the visual optical axis and the laser optical axis are made to intersect in the welding work area, forming a visual-laser coaxial positioning structure. This structure can accurately identify the welding points of thin plate workpieces in real time, automatically correct workpiece clamping deviations and position offsets, replace manual visual alignment, and achieve high positioning accuracy and high debugging efficiency.

[0025] Compared with the prior art, the beneficial effects of the present invention are: the laser welding machine for this side electrode panel: 1. The system comprises a horizontal two-dimensional motion axis (X-axis), a vertical motion axis (Y-axis), and a vertical motion axis (Z-axis). A rotary servo motor drives a rotating swing frame to swing around the horizontal axis, while a rotary servo motor drives the side electrode welding fixture to rotate around the vertical axis. This forms a multi-degree-of-freedom composite motion system combining X / Y / Z translation and dual rotation. Simultaneously, the optical axis of the CCD vision positioning camera intersects with the laser beam optical axis of the laser welding output head in the welding work area on the side electrode welding fixture, achieving visual guidance and precise positioning of the welding position. This multi-axis linkage structure, in conjunction with the visual positioning, allows the laser output head's light emission point to be precisely aligned with different welding positions on the side electrode panel at any spatial angle, improving the welding accuracy and consistency of the side electrode panel. 2. The output end of rotary servo motor one is connected to the fixture connecting frame through a rotary swing frame. The output end of rotary servo motor two, which is set on the fixture connecting frame, is equipped with a side electrode welding fixture. After the workpiece is loaded into the side electrode welding fixture, it is locked by the clamping mechanism on the fixture. Rotary servo motor two drives the fixture to rotate in an indexing manner, and sends the side electrodes of different positions on the workpiece into the lower part of the laser welding output head in sequence. The workpiece is always fixed in the same fixture during the welding process, which effectively eliminates the cumulative positioning error caused by multiple clamping. At the same time, the workpiece is continuously clamped in the fixture, realizing precise positioning and stable clamping. 3. The vertical threaded lifting column is a screw-driven column, with the screw connected to the adjusting handwheel. The connecting cantilever is installed at the lifting end of the vertical threaded lifting column, and the connecting arm is fixed on the connecting cantilever. The laser generator is installed on the connecting arm, and the laser welding output head rises and falls synchronously with the laser generator. By rotating the adjusting handwheel, the screw is rotated to achieve vertical coarse adjustment of the laser generator and its output head. Combined with the precision feed of the X-axis linear slide, Y-axis linear slide, and Z-axis linear slide, micron-level fine adjustment of the focal position is achieved. The combination of coarse and fine adjustment makes the focal adjustment range large and the operation simple, adapting to the welding needs of side electrode panels of different thicknesses and specifications, reducing the difficulty of equipment debugging and time costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall disassembled three-dimensional structure of the present invention; Figure 3 This is a schematic diagram showing the installation positions of the X-axis linear slide, Y-axis linear slide, and vertical threaded lifting column of the present invention. Figure 4 This is a three-dimensional structural diagram of the Z-axis linear slide, mounting back plate, and fixture connecting frame of the present invention. Figure 5 This is a three-dimensional structural diagram of the X-axis linear slide, Y-axis linear slide, and Z-axis linear slide of the present invention. Figure 6 A three-dimensional structural diagram of the mounting backplate, rotary swing frame, jig connection frame and side electrode welding jig of the present invention; Figure 7 A three-dimensional structural diagram of the mounting backplate, rotary swing frame, and rotary servo motor of the present invention; Figure 8 This is a three-dimensional structural diagram of the fixture connecting frame, rotary servo motor 2, and side electrode welding fixture of the present invention. Figure 9 This is a three-dimensional structural diagram of the vertical threaded lifting column, laser generator, and laser welding output head of the present invention.

[0027] In the diagram: 1. Control cabinet; 2. Worktable; 3. X-axis linear slide; 4. Y-axis linear slide; 5. Z-axis linear slide; 6. Mounting backplate; 7. Rotary servo motor one; 8. Rotary swing frame; 9. Fixture connecting frame; 10. Rotary servo motor two; 11. Side electrode welding fixture; 12. Vertical threaded lifting column; 13. Adjusting handwheel; 14. Connecting cantilever; 15. Connecting arm; 16. Laser generator; 17. Laser welding output head; 18. Auxiliary bracket; 19. CCD vision positioning camera; 20. Camera mounting bracket. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-9 The present invention provides a technical solution: a laser welding machine for a side electrode panel, comprising a control cabinet 1, a worktable 2, an X-axis linear slide 3, a Y-axis linear slide 4, a Z-axis linear slide 5, a mounting backplate 6, a first rotary servo motor 7, a rotary swing frame 8, a fixture connecting frame 9, a second rotary servo motor 10, a side electrode welding fixture 11, a vertical threaded lifting column 12, an adjusting handwheel 13, a connecting cantilever 14, a connecting arm 15, a laser generator 16, a laser welding output head 17, an auxiliary bracket 18, a CCD vision positioning camera 19, and a camera mounting bracket 20; Among them, the control cabinet 1 is a square cabinet with welding control system components. The top surface of the control cabinet 1 is equipped with a workbench 2, and the workbench 2 is provided with mounting holes at equal intervals. An X-axis linear slide 3 and a vertical threaded lifting column 12 are mounted on the upper surface of the worktable 2, and the X-axis linear slide 3 and the vertical threaded lifting column 12 are installed in a staggered manner. A Y-axis linear slide 4 is mounted on the slide of the X-axis linear slide 3, and a Z-axis linear slide 5 is mounted on the slide of the Y-axis linear slide 4. A mounting backplate 6 is mounted on the slide of the Z-axis linear slide 5, and a rotary servo motor 7 is mounted on the mounting backplate 6. The control cabinet 1 is connected to the X-axis linear slide 3, the Y-axis linear slide 4, the Z-axis linear slide 5, the rotary servo motor 7, the rotary servo motor 10, and the laser generator. The generator 16 and the CCD vision positioning camera 19 are electrically connected. The X-axis linear slide 3, Y-axis linear slide 4 and Z-axis linear slide 5 are all ball screw linear modules driven by servo motors. The X-axis linear slide 3 and Y-axis linear slide 4 form a two-dimensional planar motion axis, and the Z-axis linear slide 5 forms a vertical motion axis. The output end of the rotary servo motor 17 is equipped with a rotary swing frame 8, and a fixture connecting frame 9 is installed on the rotary swing frame 8. The fixture connecting frame 9 is equipped with a rotary servo motor 2 10, and the output end of the rotary servo motor 2 10 is equipped with a side electrode welding fixture 11. Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, the control cabinet 1 serves as the foundation for the entire machine. The control cabinet 1 is a square cabinet, which integrates welding control system components. The top surface is equipped with a worktable 2. The worktable 2 has mounting holes at equal intervals for fixing various functional components. The upper end of the worktable 2 is equipped with an X-axis linear slide 3 and a vertical threaded lifting column 12, which are staggered on the worktable 2 and do not interfere with each other. X-axis linear slide 3 serves as the bottom motion axis and is fixed to the worktable 2 by bolts through the mounting holes on the worktable 2. Y-axis linear slide 4 is vertically mounted above X-axis linear slide 3, and Z-axis linear slide 5 is vertically mounted on the slide of Y-axis linear slide 4. The three constitute an XYZ three-axis linkage motion system. Mounting back plate 6 is fixedly mounted on the slide of Z-axis linear slide 5. Rotary servo motor 1 7 is mounted on mounting back plate 6, and a rotary swing frame 8 is mounted on its output end. A fixture connecting frame 9 is mounted on the rotary swing frame 8, and a rotary servo motor 2 10 is mounted on the fixture connecting frame 9. A side electrode welding fixture 11 is mounted on the output end of rotary servo motor 2 10. During installation, it is necessary to ensure that the movement directions of X-axis linear slide 3, Y-axis linear slide 4, and Z-axis linear slide 5 are perpendicular to each other to ensure no interference during slide movement, and that the bearing surface of the side electrode welding fixture 11 is parallel to the worktable 2. The vertical threaded lifting column 12 is fixedly installed on the worktable 2, staggered from the X-axis linear slide 3. A connecting cantilever 14 is installed at the lifting end of the vertical threaded lifting column 12, and a connecting arm 15 is fixedly installed on the connecting cantilever 14. The orientation of the connecting arm 15 is parallel to the orientation of the Y-axis linear slide 4, ensuring the relative positional accuracy between the laser welding output head 17 and the side electrode welding fixture 11. The laser generator 16 is installed on the connecting arm 15, and the laser welding output head 17 is located at the emitting end of the laser generator 16. It is connected to the laser generator 16 via an optical fiber, and the laser beam is focused and emitted by the laser welding output head 17 after transmission through the optical fiber. When installing the laser welding output head 17, its emission direction must be adjusted to be perpendicular to the side electrode welding fixture 11, and the height of the vertical threaded lifting column 12 must be adjusted to ensure the laser focus falls on the workpiece surface. The CCD visual positioning camera 19 is mounted on the connecting arm 15 via the camera mounting bracket 20. Its position is located on one side of the laser welding output head 17. The auxiliary bracket 18 is set outside the housing of the laser generator 16, extending downward in the vertical direction and arranged parallel to the laser welding output head 17. The connecting arm 15 and the auxiliary bracket 18 together form an L-shaped structure, providing stable support for the CCD visual positioning camera 19. When installing the CCD visual positioning camera 19, the angle of the camera mounting bracket 20 needs to be adjusted so that the optical axis of the CCD visual positioning camera 19 intersects with the optical axis of the laser beam of the laser welding output head 17 in the side electrode welding working area on the side electrode welding fixture 11, so that the camera shooting center point is consistent with the laser emission point. The control cabinet 1 is electrically connected to the X-axis linear slide 3, Y-axis linear slide 4, Z-axis linear slide 5, rotary servo motor 7, rotary servo motor 10, laser generator 16 and CCD vision positioning camera 19. The control system in the control cabinet 1 centrally controls and interacts with the signals of each component. All electrical lines must be run along the outside of the equipment to avoid interference between the lines and moving parts. Shielded signal lines are set between each motor driver and the control system to prevent electromagnetic interference from affecting the image acquisition quality of the CCD vision positioning camera 19. A connecting cantilever 14 is mounted on the slide of the vertical threaded lifting column 12, and a connecting arm 15 is fixedly mounted on the connecting cantilever 14. A laser generator 16 and a CCD vision positioning camera 19 are mounted on the connecting arm 15. The emitting end of the laser generator 16 is equipped with a laser welding output head 17. The CCD vision positioning camera 19 is mounted on the connecting arm 15 via a camera mounting bracket 20. The vertical threaded lifting column 12 is a screw-driven column, and the screw of the vertical threaded lifting column 12 is connected to the adjusting handwheel 13. The connecting arm 15 is linearly connected to the Y-axis. The installation direction of platform 4 is parallel, and the connecting arm 15 and the auxiliary bracket 18 together form an L-shaped structure. The laser generator 16 is a fiber laser, and the laser welding output head 17 is connected to the laser generator 16 through an optical fiber. The outer casing of the laser generator 16 is provided with a downward auxiliary bracket 18, and the auxiliary bracket 18 and the laser welding output head 17 are arranged parallel to each other. The optical axis of the CCD vision positioning camera 19 intersects with the laser beam optical axis of the laser welding output head 17 in the side electrode welding working area on the side electrode welding fixture 11. Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, the operator turns on the power to the control cabinet 1, and the control system starts the self-test program to check the communication and operation status of the X-axis linear slide 3, Y-axis linear slide 4, Z-axis linear slide 5, rotary servo motor 1 7, rotary servo motor 2 10, laser generator 16 and CCD vision positioning camera 19 one by one. After the self-test is passed, the operator inputs welding path parameters, laser power, welding speed, focal position and other welding parameters into the control system according to the process requirements of the electrode panel to be welded. The operator places the side electrode panel workpiece into the side electrode welding fixture 11 and positions the workpiece using the positioning structure on the fixture. During clamping, it is necessary to ensure that the workpiece falls completely into the positioning surface of the fixture without tilting or shifting. The operator also manually locks the clamping mechanism on the fixture to prevent the workpiece from shifting during the welding process. Driven by the rotary servo motor 10, the side electrode welding fixture 11 can be rotated and adjusted according to the welding position requirements, so that the different side electrodes to be welded on the workpiece are rotated sequentially to the position directly below the laser welding output head 17. The CCD vision positioning camera 19 acquires images of the workpiece on the side electrode welding fixture 11 and transmits the acquired image signals to the control system in the control cabinet 1. The control system identifies and locates the welding position feature points on the workpiece through image recognition algorithms and calculates the deviation between the actual welding position and the theoretical welding position. When the deviation exceeds the allowable range, the control system automatically calculates the compensation value and drives the X-axis linear slide 3 and the Y-axis linear slide 4 to perform micro-movement compensation, so that the light output point of the laser welding output head 17 is accurately aligned with the position to be welded. At the same time, by rotating the adjusting handwheel 13, the screw of the vertical threaded lifting column 12 is driven to rotate, which drives the connecting cantilever 14 and the connecting arm 15 installed on it to rise and fall in the vertical direction, thereby adjusting the distance between the laser welding output head 17 and the workpiece surface, so that the laser focus falls accurately on the workpiece surface to be welded. The control system sends a light-emitting command to the laser generator 16. The laser beam generated by the laser generator 16 is transmitted to the laser welding output head 17 via optical fiber. After being focused by the laser welding output head 17, it is output to the welding position on the workpiece surface to complete the laser welding at that point. After the single-point welding is completed, the control system drives the X-axis linear slide 3 and the Y-axis linear slide 4 to move the laser welding output head 17 along the horizontal two-dimensional plane to the next welding position according to the preset welding path. When it is necessary to adjust the welding angle, the control system drives the rotary servo motor 7 to drive the rotary swing frame 8 to swing, so that the side electrode welding fixture 11 swings around the horizontal axis to the required angle to meet the welding requirements of different tilt angles of the side electrode. During the welding process, the CCD vision positioning camera 19 continuously collects images of the welding area and monitors the shape of the weld pool and the weld formation in real time. When a welding deviation is detected, the control system promptly sends a correction signal to adjust the motion trajectory. After all welding points are completed, the control system stops the laser generator 16 from emitting light, and the X-axis linear slide 3, Y-axis linear slide 4, and Z-axis linear slide 5 drive the side electrode welding fixture 11 back to its initial safe position. The operator releases the clamping mechanism on the side electrode welding fixture 11, removes the welded side electrode panel workpiece, and places it in a transfer container. After unloading, the welding slag and dust on the surface of the side electrode welding fixture 11 need to be removed with an air gun. After cleaning, the next workpiece to be welded is loaded into the side electrode welding fixture 11, and then the above clamping, positioning, welding, and unloading process is repeated.

[0030] Working principle: When using the laser welding machine with this side electrode panel, first turn on the power of the control cabinet 1. The control system performs a self-test and communicates with the X-axis linear slide 3, Y-axis linear slide 4, Z-axis linear slide 5, rotary servo motor 1 7, rotary servo motor 2 10, laser generator 16 and CCD vision positioning camera 19 for confirmation. The operator loads the side electrode panel workpiece into the side electrode welding fixture 11 and locks the clamping mechanism. According to the welding position requirements, the rotary servo motor 10 drives the fixture to rotate to the welding position. The CCD vision positioning camera 19 is fixed on the connecting arm 15 through the camera mounting bracket 20 to acquire images of the workpiece welding area. The control system identifies the welding feature points and calculates the position deviation. Then, it drives the X-axis linear slide 3 and the Y-axis linear slide 4 to move along the horizontal two-dimensional plane to perform micron-level compensation, so that the light output point of the laser welding output head 17 is accurately aligned with the welding position. By rotating the adjusting handwheel 13, the screw of the vertical threaded lifting column 12 is driven to rise and fall, which in turn drives the connecting cantilever 14 and connecting arm 15 to move in the vertical direction. The distance between the laser welding output head 17 and the workpiece is adjusted to ensure that the laser focus falls on the welding surface. The laser generator 16 is started, and the laser beam is transmitted through the optical fiber to the laser welding output head 17 for focused output, completing the welding at that point. After a single point is completed, the control system drives the X-axis and Y-axis slides to the next welding point according to the preset path. When it is necessary to change the welding angle, the rotary servo motor 7 drives the rotary swing frame 8 to swing, so that the side electrode welding fixture 11 installed on the fixture connecting frame 9 tilts around the horizontal axis to the required angle. After all welding points are completed, the slide returns to its original position, the operator releases the fixture, removes the workpiece, and uses an air gun to clean the welding slag on the surface of the side electrode welding fixture 11, preparing for the next cycle.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine for a side electrode panel, comprising: The control cabinet (1) is a square cabinet with welding control system components. The top surface of the control cabinet (1) is equipped with a workbench (2), and the workbench (2) is provided with mounting holes at equal intervals. The features are as follows: an X-axis linear slide (3) and a vertical threaded lifting column (12) are installed on the upper surface of the worktable (2), and the X-axis linear slide (3) and the vertical threaded lifting column (12) are installed in a staggered manner. A Y-axis linear slide (4) is installed on the slide of the X-axis linear slide (3), and a Z-axis linear slide (5) is installed on the slide of the Y-axis linear slide (4). A mounting back plate (6) is installed on the slide of the Z-axis linear slide (5), and a rotary servo motor (7) is mounted on the mounting back plate (6). The vertical threaded lifting column (12) has a connecting cantilever (14) mounted on its slide, and a connecting arm (15) is fixedly mounted on the connecting cantilever (14). A laser generator (16) and a CCD visual positioning camera (19) are mounted on the connecting arm (15). The laser generator (16) has a laser welding output head (17) at its emitting end. The CCD visual positioning camera (19) is mounted on the connecting arm (15) via a camera mounting bracket (20).

2. The laser welding machine for a side electrode panel according to claim 1, characterized in that: The control cabinet (1) is electrically connected to the X-axis linear slide (3), Y-axis linear slide (4), Z-axis linear slide (5), rotary servo motor one (7), rotary servo motor two (10), laser generator (16) and CCD vision positioning camera (19).

3. The laser welding machine for a side electrode panel according to claim 1, characterized in that: The X-axis linear slide (3), Y-axis linear slide (4) and Z-axis linear slide (5) are all ball screw linear modules driven by servo motors. The X-axis linear slide (3) and Y-axis linear slide (4) form a two-dimensional planar motion axis, and the Z-axis linear slide (5) forms a vertical motion axis.

4. The laser welding machine for a side electrode panel according to claim 1, characterized in that: The output end of the rotary servo motor (7) is equipped with a rotary swing frame (8), and a fixture connecting frame (9) is installed on the rotary swing frame (8).

5. A laser welding machine for a side electrode panel according to claim 4, characterized in that: The fixture connecting frame (9) is equipped with a rotary servo motor 2 (10), and the output end of the rotary servo motor 2 (10) is equipped with a side electrode welding fixture (11).

6. The laser welding machine for a side electrode panel according to claim 1, characterized in that: The vertical threaded lifting column (12) is a screw-driven column, and the screw of the vertical threaded lifting column (12) is connected to the adjusting handwheel (13) for transmission.

7. A laser welding machine for a side electrode panel according to claim 1, characterized in that: The connecting arm (15) is installed parallel to the Y-axis linear slide (4), and the connecting arm (15) and the auxiliary bracket (18) together form an L-shaped structure.

8. A laser welding machine for a side electrode panel according to claim 1, characterized in that: The laser generator (16) is a fiber laser, and the laser welding output head (17) is connected to the laser generator (16) via an optical fiber.

9. A laser welding machine for a side electrode panel according to claim 1, characterized in that: The laser generator (16) has a downward auxiliary support (18) on its outer casing, and the auxiliary support (18) and the laser welding output head (17) are arranged parallel to each other.

10. A laser welding machine for a side electrode panel according to claim 1, characterized in that: The optical axis of the CCD visual positioning camera (19) intersects with the optical axis of the laser beam of the laser welding output head (17) in the side electrode welding working area on the side electrode welding fixture (11).

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