Laser welding device for automobile water tank cross beam

Abstract

The invention discloses a laser welding device for an automobile water tank cross beam. The water tank beam laser welding device comprises a machining table, a plurality of I-shaped frames at equal intervals are installed on the two sides of the top face of the machining table, first electric sliding tables are longitudinally installed on the top faces of the I-shaped frames on the same side, and a positioning filtering mechanism is installed in the machining table; through cooperation of the hydraulic cylinder, the T-shaped sliding block and the T-shaped sliding groove, angle and height adjustment of the positioning table is achieved, so that the welding angle requirements of different automobile water tank cross beams are met, and the universality of equipment is enhanced; through cooperation of an arc-shaped ceramic plate and a torsional spring, flowing guiding of waste gas is facilitated, the torsional spring drives the ceramic plate to shake, and therefore attached small-particle impurities are shaken off, and the filtering efficiency is improved; through cooperation of the air cylinder and the U-shaped push rod, fine adjustment of the welding gun is achieved, coarse adjustment of the welding gun is achieved through the sliding groove of the connecting plate, the accuracy of the welding point position is greatly improved, and the welding quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of laser welding equipment for water tank beams, and more particularly to a laser welding device for automotive water tank beams. Background Technology

[0002] With the explosive growth of the new energy vehicle market, the automotive radiator crossbeam, as a core structural component supporting the heat dissipation system, needs to achieve both lightweighting and high airtightness. Traditional resistance welding and argon arc welding cannot meet the welding requirements of thin-walled aluminum alloys and irregular curved surfaces due to large thermal deformation and low weld strength. The market size of laser welding equipment in my country is expected to exceed 30 billion yuan in 2025, with automotive lightweighting contributing the main incremental growth, directly driving the research and development of laser welding equipment for radiator crossbeams. Laser welding equipment used for processing automotive radiator crossbeams has several shortcomings: First, the positioning mechanism lacks flexibility. The angle and height of the positioning table are mostly fixed, making it impossible to adapt to different models and welding angle requirements of the radiator crossbeams. This results in poor equipment versatility and difficulty in meeting diverse processing needs. Second, the treatment of pollutants such as metal spatter and harmful exhaust gases generated during welding is inadequate. There is a lack of efficient filtration and collection mechanisms. Spatter easily scatters and contaminates the equipment and working environment, while direct emission of harmful exhaust gases endangers the health of operators and pollutes the environment. At the same time, the difficulty in cleaning impurities increases equipment maintenance costs. Third, the welding torch adjustment precision is insufficient. It relies heavily on a single adjustment method, making it difficult to achieve accurate positioning in the horizontal, vertical, and vertical directions. This leads to welding point deviations and affects the stability of welding quality. Therefore, improvements are needed to address these issues. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a laser welding device for automotive water tank crossbeams.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a laser welding device for automotive water tank crossbeams, comprising a processing table, on both sides of the top surface of the processing table are multiple equidistant I-beams, on the same side of the top surface of the I-beams are longitudinally mounted a first electric slide, and a second electric slide is transversely provided at the upper end of the first electric slide. The two ends of the second electric slide are slidably connected to the two sides of the first electric slide, and a positioning welding mechanism is installed on the second electric slide. A positioning filtering mechanism is installed inside the processing table, and the positioning filtering mechanism includes a positioning component and a filtering component.

[0005] Preferably, the positioning welding mechanism includes a movable block slidably connected to a second electric slide table. A lifting platform is installed at the front end of the movable block. A slide groove is opened inside the lifting platform, and a servo motor is installed on the top surface of the lifting platform. An adjusting screw is vertically rotatably connected in the slide groove. The upper end of the adjusting screw is connected to the output shaft of the servo motor through a coupling. A lifting block is threadedly connected to the adjusting screw. The lifting block slides in the slide groove, and an L-shaped support plate is installed at the front end of the lifting block.

[0006] Preferably, a laser generator is installed on the inner bottom surface of the L-shaped support plate, and a connection port is opened on the bottom surface of the L-shaped support plate. Connecting plates are installed on both sides of the connection port, and sliding grooves are opened on the connecting plates. A welding gun is provided at the lower end of the L-shaped support plate, and the upper end of the welding gun is placed in the sliding groove and fixed in the sliding groove by a nut. A U-shaped push rod is slidably connected to the rear end of the welding gun, and an L-shaped fixing plate is installed below the rear end face of the L-shaped support plate. A cylinder is installed on the inner bottom surface of the L-shaped fixing plate, and the output shaft of the cylinder is connected to the U-shaped push rod. A connecting pipe is installed at the rear end of the welding gun, and the other end of the connecting pipe is connected to the laser generator.

[0007] Preferably, the positioning component includes a positioning platform located inside the processing table. The top surface of the positioning platform has multiple equidistant positioning holes in the center. An external clamping device can be installed in the positioning holes. The bottom surface of the positioning platform has T-shaped sliding grooves at the four corners. A T-shaped slider is slidably connected in the T-shaped sliding groove. A hydraulic cylinder is installed at each of the four corners of the bottom surface of the processing table. The output shaft of the hydraulic cylinder is movably hinged to the T-shaped slider.

[0008] Preferably, the filter assembly includes an installation groove formed on the front and rear end faces of the inner wall of the processing table, a grid is installed in the installation groove, a collection groove is formed below the front and rear end faces of the processing table, the collection groove is connected to the installation groove, and a collection box is installed in the collection groove.

[0009] Preferably, an air pump is installed on one side of the bottom surface of the processing table, and a first air pipe is installed at the air inlet at both ends of the air pump. The other ends of the two first air pipes are connected to the lower end of the mounting groove, and a second air pipe is connected to the air outlet of the air pump. An exhaust gas treatment box is installed on the other side of the bottom surface of the processing table, and the exhaust gas treatment box is connected to the other end of the second air pipe.

[0010] Preferably, the inner wall of the mounting groove has multiple equidistant rotating grooves vertically opened on both sides, and multiple equidistant ceramic plates are horizontally arranged in the mounting groove. The ceramic plates are arc-shaped, and the inner side of the ceramic plates faces the grille.

[0011] Preferably, a rotating shaft is rotatably connected inside the rotating groove, and torsion springs are installed at both ends of the rotating shaft. One end of the torsion spring is connected to the rotating shaft, and the other end of the torsion spring is connected to the inner wall of the rotating groove. The rotating shaft is also connected to the ceramic plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention achieves the adjustment of the angle and height of the positioning table through the cooperation of hydraulic cylinder, T-shaped slider, and T-shaped groove, thereby adapting to the welding angle requirements of different automotive water tank crossbeams and enhancing the versatility of the equipment; the external clamping device installed through the positioning hole of the positioning table facilitates the fixation of the workpiece, thereby preventing the workpiece from shifting due to vibration during welding and improving welding stability; the cooperation of air pump, first air pipe, and second air pipe facilitates the intake of welding exhaust gas and impurities into the exhaust gas treatment box, thereby avoiding the diffusion of pollutants; the cooperation of grille and collection box facilitates the preliminary filtration and collection of small particulate matter in the exhaust gas, facilitating subsequent cleaning and maintenance; the cooperation of arc-shaped ceramic plate and torsion spring facilitates the flow guidance of exhaust gas, causing the torsion spring to drive the ceramic plate to shake, thereby shaking off the attached small particulate impurities and improving filtration efficiency; the cooperation of cylinder and U-shaped push rod enables fine adjustment of the welding torch, and the sliding groove of the connecting plate enables coarse adjustment of the welding torch, greatly improving the accuracy of the welding point and ensuring welding quality. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the electric slide table and the positioning welding mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the positioning and welding mechanism of the present invention; Figure 4 This is a schematic diagram of the positioning and welding mechanism of the present invention from another perspective; Figure 5 This is a schematic diagram showing the connection between the processing table and the positioning table of the present invention; Figure 6 This is a three-dimensional structural diagram of the positioning component of the present invention; Figure 7 This is a schematic diagram showing the connection between the processing table and the filter assembly of the present invention; Figure 8 This is a schematic diagram of the internal structure of the processing table of the present invention; Figure 9 This is a schematic diagram showing the connection between the torsion spring and the ceramic plate of the present invention; Figure 10 For the present invention Figure 4 Enlarged schematic diagram of the structure at part A in the middle; The following are the components listed in the diagram: 1. Processing table; 2. I-beam frame; 3. First electric slide table; 4. Second electric slide table; 5. Moving block; 6. Lifting platform; 7. Servo motor; 8. Adjusting screw; 9. Lifting block; 10. L-shaped support plate; 11. Laser generator; 12. Connecting plate; 13. Welding torch; 14. U-shaped push rod; 15. Cylinder; 16. L-shaped fixing plate; 17. Connecting pipe; 18. Positioning table; 19. Hydraulic cylinder; 20. T-shaped slider; 21. Grille; 22. Collection box; 23. Air pump; 24. First air pipe; 25. Second air pipe; 26. Exhaust gas treatment box; 27. Ceramic plate; 28. Torsion spring. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0015] Example 1: See Figures 1 to 10This invention discloses a laser welding device for an automotive radiator crossbeam, comprising a processing table 1. Multiple equidistant I-frames 2 are mounted on both sides of the top surface of the processing table 1. A first electric slide 3 is longitudinally mounted on the top surface of the I-frames 2 on the same side. A second electric slide 4 is laterally mounted on the upper end of the first electric slide 3. The two ends of the second electric slide 4 are slidably connected to the first electric slides 3 on both sides. A positioning welding mechanism is mounted on the second electric slide 4. A positioning filter mechanism is installed inside the processing table 1, comprising a positioning component and a filter component. The processing table 1 facilitates support for all components, providing a stable operating platform for welding operations. The I-frames 2 facilitate the fixed support of the first electric slide 3, ensuring its installation stability. The first electric slide 3 facilitates the longitudinal movement of the second electric slide 4, expanding the longitudinal working range of the welding mechanism. The second electric slide 4 facilitates the lateral movement of the positioning welding mechanism. The positioning welding mechanism includes components slidably connected to the second electric slide 3. The movable block 5 on the movable slide table 4 has a lifting platform 6 installed at its front end. The lifting platform 6 has a sliding groove inside, and a servo motor 7 is installed on the top surface of the lifting platform 6. An adjusting screw 8 is vertically rotatably connected in the sliding groove. The upper end of the adjusting screw 8 is connected to the output shaft of the servo motor 7 through a coupling. A lifting block 9 is threaded onto the adjusting screw 8. The lifting block 9 slides in the sliding groove, and an L-shaped support plate 10 is installed at the front end of the lifting block 9. The movable block 5 facilitates the lateral movement of the lifting platform 6 along the second electric slide table 4. The lifting platform 6 provides a vertical sliding track for the lifting block 9, supporting the servo motor 7 and the adjusting screw 8. The servo motor 7 drives the adjusting screw 8 to rotate, achieving precise lifting and lowering of the lifting block 9. The model of the servo motor 7 is AKM2G-21KL. The adjusting screw 8 facilitates the stable adjustment of the height of the welding torch 13. The lifting block 9 facilitates the up-and-down movement of the L-shaped support plate 10, thereby adjusting the height of the welding torch 13.

[0016] Example 2: The technical solution is basically the same as that of Example 1, except that, as Figure 2 , Figure 3 , Figure 4As shown, a laser generator 11 is installed on the inner bottom surface of the L-shaped support plate 10, and a connection port is opened on the bottom surface of the L-shaped support plate 10. Connecting plates 12 are installed on both sides of the connection port, and sliding grooves are opened on the connecting plates 12. A welding torch 13 is installed at the lower end of the L-shaped support plate 10. The upper end of the welding torch 13 is placed in the sliding groove and fixed in the sliding groove by a nut. A U-shaped push rod 14 is slidably connected to the rear end of the welding torch 13. An L-shaped fixing plate 16 is installed below the rear end face of the L-shaped support plate 10. A cylinder 15 is installed on the inner bottom surface of the L-shaped fixing plate 16. The output shaft of the cylinder 15 is connected to the U-shaped push rod 14. The rear end of the welding torch 13 is equipped with a connecting pipe 17, the other end of which is connected to the laser generator 11. An L-shaped support plate 10 facilitates the support of core welding components such as the laser generator 11 and welding torch 13. The laser generator 11 provides high-energy-density laser light for precise welding; the laser generator 11 is an IPGYLS-U-AMB series model. The connecting plate 12 facilitates coarse adjustment of the lateral position of the welding torch 13. The welding torch 13 facilitates welding operations. A U-shaped push rod 14 facilitates precise adjustment of the lateral position of the welding torch 13, thereby improving the weld joint. Precision; the cylinder 15 facilitates fine-tuning of the U-shaped push rod 14 and welding torch 13; the L-shaped fixing plate 16 provides a stable mounting base for the cylinder 15; the connecting pipe 17 facilitates connection between the laser generator 11 and the welding torch 13; the positioning assembly includes a positioning platform 18 located inside the processing table 1, with multiple equidistant positioning holes in the center of the top surface of the positioning platform 18, into which external clamping devices can be installed; and T-shaped sliding grooves are laterally formed at the four corners of the bottom surface of the positioning platform 18, with T-shaped sliders 20 slidably connected within the T-shaped sliding grooves; hydraulic cylinders 19 are installed at each of the four corners of the bottom surface inside the processing table 1. The output shaft of the hydraulic cylinder 19 is hinged to the T-shaped slider 20; the positioning table 18 facilitates the fixing of the automotive water tank crossbeam to be welded; the hydraulic cylinder 19 facilitates the adjustment of the angle or height of the positioning table 18 to adapt to different welding angle requirements; the T-shaped slider 20 facilitates the adjustment of the angle or height of the positioning table 18 in conjunction with the hydraulic cylinder 19; the filter assembly includes mounting grooves opened on the front and rear end faces of the inner wall of the processing table 1, in which a grid 21 is installed; a collection groove is opened below the front and rear end faces of the processing table 1, which is connected to the mounting groove, and a collection box 22 is installed in the collection groove.

[0017] Example 3: The technical solution is basically the same as that of Example 1, except that, as Figure 7 , Figure 8 , Figure 9As shown, an air pump 23 is installed on one side of the inner bottom surface of the processing table 1. First air pipes 24 are installed at both ends of the air pump 23, and the other ends of the two first air pipes 24 are connected to the lower end of the mounting slot. A second air pipe 25 is connected to the air outlet of the air pump 23. An exhaust gas treatment box 26 is installed on the other side of the inner bottom surface of the processing table 1, and the exhaust gas treatment box 26 is connected to the other end of the second air pipe 25. The grille 21 facilitates preliminary filtration of welding spatter and large particulate impurities. The collection box 22 facilitates the collection of impurities filtered by the grille 21, thus facilitating subsequent cleaning. The air pump 23 provides power for the collection of exhaust gas and impurities. The first air pipes 24 facilitate the introduction of exhaust gas and impurities from the mounting slot into the air pump 23. The second air pipe 25 facilitates the introduction of exhaust gas and impurities from the mounting slot into the air pump 23. The exhaust gas drawn in by pump 23 is transferred to exhaust gas treatment box 26; the exhaust gas treatment box 26 facilitates the treatment of harmful gases generated during welding; multiple equidistant rotating slots are vertically opened on both sides of the inner wall of the mounting groove, and multiple equidistant ceramic plates 27 are horizontally arranged in the mounting groove. The ceramic plates 27 are arc-shaped, and the inner side of the ceramic plates 27 faces the grille 21; the ceramic plates 27 facilitate the guidance of airflow and impurity flow, and the arc-shaped structure enhances the airflow guidance; a rotating shaft is rotatably connected in the rotating slot, and torsion springs 28 are installed at both ends of the rotating shaft. One end of the torsion spring 28 is connected to the rotating shaft, and the other end of the torsion spring 28 is connected to the inner wall of the rotating slot, and the rotating shaft is connected to the ceramic plates 27; the rotating shaft and springs facilitate the rotation of the ceramic plates 27, thereby shaking off the impurities remaining on the ceramic plates 27.

[0018] Working principle: In this embodiment, the present invention also proposes a method for using a laser welding device for automotive water tank crossbeams, including the following steps: Step 1: First, connect all electrical equipment with wires and power it on. Then, place the automotive water tank crossbeam workpiece to be welded on the top surface of the positioning table 18. Then, according to the size of the crossbeam workpiece and the welding requirements, install a suitable external clamping device in the positioning hole opened on the top surface of the positioning table 18. Fix the crossbeam workpiece on the positioning table 18 through the external clamping device. After the crossbeam workpiece is fixed, start the hydraulic cylinder 19. Push the T-shaped slider 20 to slide laterally in the T-shaped groove through the output shaft of the hydraulic cylinder 19. Then, the output shaft of the hydraulic cylinder 19 is movably hinged with the T-shaped slider 20, thereby realizing the fine adjustment of the angle or the height of the positioning table 18. Step 2: After the crossbeam workpiece is positioned, the first electric slides 3 on both sides are started. The first electric slides 3 drive the second electric slides 4 to move longitudinally. Then, the second electric slides 4 are started, thereby realizing the lateral movement of the moving block 5. The XY axis positioning of the welding torch 13 is realized through the first electric slides 3 and the second electric slides 4. Then, the servo motor 7 is started, and the output shaft of the servo motor 7 controls the rotation of the adjusting screw 8. The lifting block 9 is threadedly connected to the adjusting screw 8, and then slides in the slide groove. When the adjusting screw 8 rotates, it controls the vertical movement of the lifting block 9, thereby driving the L-shaped support plate 10 and the welding torch 13 to rise and fall, realizing the adjustment of the height of the welding torch 13. Step 3: After the height position of the welding torch 13 is adjusted, loosen the nut that fixes the welding torch 13 on the connecting plate 12, so that the welding torch 13 can slide in the sliding groove, thereby adjusting the lateral position of the welding torch 13. After adjustment, tighten the nut to fix it; start the cylinder 15, and push the U-shaped push rod 14 through the output shaft of the cylinder 15. The U-shaped push rod 14 is slidably connected to the welding torch 13, thereby aligning the welding torch 13 with the crossbeam workpiece. Step four: After the welding torch 13 is positioned, the laser generator 11 is activated. The laser generator 11 transmits energy to the welding torch 13 through the connecting pipe 17. During the welding process of the welding torch 13, the first electric slide 3 and the second electric slide 4 are activated, causing the first electric slide 3 and the second electric slide 4 to drive the welding torch 13 according to a preset program. The machine moves along the welding trajectory to achieve continuous welding operations. Simultaneously, the air pump 23 is started and connected to the rotary groove through the first air pipe 24, so that the exhaust gas generated during welding is drawn into the installation groove. Large particles of spatter are initially filtered through the grille 21. When the exhaust gas enters the installation groove, it is guided by the ceramic plate 27. When the exhaust gas comes into contact with the ceramic plate 27, small particles of impurities in the exhaust gas will adhere to the ceramic plate 27. When the exhaust gas flows, it will cause the ceramic plate 27 to rotate. When there is no gas flow, the torsion spring 28 will cause the ceramic plate 27 to shake, thereby shaking off the small particles of impurities attached to the ceramic plate 27. At this time, the exhaust gas will enter the exhaust gas treatment box 26 for treatment through the first air pipe 24, the air pump 23, and the second air pipe 25. After welding is completed, all electrical equipment is powered off.

[0019] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser welding device for automotive water tank crossbeams, comprising a processing table (1), characterized in that: Multiple equidistant I-shaped frames (2) are installed on both sides of the top surface of the processing table (1). A first electric slide (3) is installed longitudinally on the top surface of the I-shaped frame (2) on the same side. A second electric slide (4) is provided transversely at the upper end of the first electric slide (3). The two ends of the second electric slide (4) are slidably connected to the first electric slides (3) on both sides. A positioning welding mechanism is installed on the second electric slide (4). A positioning filtering mechanism is installed inside the processing table (1). The positioning filtering mechanism includes a positioning component and a filtering component.

2. The laser welding device for automotive water tank crossbeams according to claim 1, characterized in that: The positioning and welding mechanism includes a movable block (5) slidably connected to a second electric slide (4). A lifting platform (6) is installed at the front end of the movable block (5). A sliding groove is provided inside the lifting platform (6), and a servo motor (7) is installed on the top surface of the lifting platform (6). An adjusting screw (8) is vertically rotatably connected in the sliding groove. The upper end of the adjusting screw (8) is connected to the output shaft of the servo motor (7) through a coupling. A lifting block (9) is threaded on the adjusting screw (8). The lifting block (9) slides in the sliding groove. An L-shaped support plate (10) is installed at the front end of the lifting block (9).

3. The laser welding device for automotive water tank crossbeams according to claim 2, characterized in that: A laser generator (11) is installed on the inner bottom surface of the L-shaped support plate (10), and a connection port is opened on the bottom surface of the L-shaped support plate (10). A connecting plate (12) is installed on both sides of the connection port. A sliding groove is opened on the connecting plate (12). A welding gun (13) is provided at the lower end of the L-shaped support plate (10). The upper end of the welding gun (13) is placed in the sliding groove and fixed in the sliding groove by a nut. A U-shaped push rod (14) is slidably connected to the rear end of the welding gun (13). An L-shaped fixing plate (16) is installed below the rear end face of the L-shaped support plate (10). A cylinder (15) is installed on the inner bottom surface of the L-shaped fixing plate (16). The output shaft of the cylinder (15) is connected to the U-shaped push rod (14). A connecting pipe (17) is installed at the rear end of the welding gun (13). The other end of the connecting pipe (17) is connected to the laser generator (11).

4. The laser welding device for automotive water tank crossbeams according to claim 1, characterized in that: The positioning component includes a positioning platform (18) located inside the processing table (1). The positioning platform (18) has multiple equidistant positioning holes in the center of its top surface. An external clamping device can be installed in the positioning holes. T-shaped grooves are horizontally opened at the four corners of the bottom surface of the positioning platform (18). T-shaped sliders (20) are slidably connected in the T-shaped grooves. Hydraulic cylinders (19) are installed at the four corners of the bottom surface inside the processing table (1). The output shaft of the hydraulic cylinder (19) is movably hinged to the T-shaped slider (20).

5. The laser welding device for automotive water tank crossbeams according to claim 1, characterized in that: The filter assembly includes an installation groove on the front and rear end faces of the inner wall of the processing table (1), a grid (21) is installed in the installation groove, a collection groove is provided below the front and rear end faces of the processing table (1), the collection groove is connected to the installation groove, and a collection box (22) is installed in the collection groove.

6. The laser welding device for automotive water tank crossbeams according to claim 5, characterized in that: An air pump (23) is installed on one side of the bottom surface of the processing table (1). The air pump (23) has first air pipes (24) installed at both ends of the air inlet. The other ends of the two first air pipes (24) are connected to the lower end of the mounting groove. The air outlet of the air pump (23) is connected to a second air pipe (25). An exhaust gas treatment box (26) is installed on the other side of the bottom surface of the processing table (1). The exhaust gas treatment box (26) is connected to the other end of the second air pipe (25).

7. The laser welding device for automotive water tank crossbeams according to claim 5, characterized in that: The mounting groove has multiple equidistant rotating grooves vertically opened on both sides of its inner wall, and multiple equidistant ceramic plates (27) are horizontally arranged in the mounting groove. The ceramic plates (27) are arc-shaped, and the inner side of the ceramic plates (27) faces the grille (21).

8. The laser welding device for automotive water tank crossbeams according to claim 7, characterized in that: A rotating shaft is rotatably connected inside the rotating groove. Torsion springs (28) are installed at both ends of the rotating shaft. One end of the torsion spring (28) is connected to the rotating shaft, and the other end of the torsion spring (28) is connected to the inner wall of the rotating groove. The rotating shaft is connected to the ceramic plate (27).

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