Dust collection device for rolling on-line laser welding

Abstract

A dust collection device for roll-in online laser welding comprises a universal fixing frame, a dust collection assembly and an air blowing assembly, the universal fixing frame is fixedly installed on an installation table, the dust collection assembly is detachably installed on the universal fixing frame and comprises a dust collection horn, one end of the dust collection horn is connected and communicated with a dust collection cover, and the other end of the dust collection horn is connected and communicated with the air blowing assembly. The other end of the dust collection horn is fixed to the universal fixing frame through a hoop, and the front end of the air blowing assembly extends into the dust collection cover from the front side of the dust collection cover. Through the arrangement, the dust suction assembly sucks machining smoke dust slowly floating along the surface of a welded workpiece and sucks floating smoke dust with upward recoil force at the same time, a certain suction and collection effect on machining splashing and sparks is achieved, the adverse effect of the smoke dust generated in the process of laser welding of a galvanized high-strength steel plate on products can be reduced, and the production efficiency of the galvanized high-strength steel plate is improved. And the product processing quality and the production environment are improved.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a dust collection device for roll forming online laser welding of galvanized high-strength steel P-type pipes. Background Technology

[0002] Galvanized steel sheets are widely used in numerous fields such as automobile manufacturing, packaging, bridge construction, and industrial facilities due to their excellent corrosion resistance, good mechanical properties, and low price. The application of galvanized high-strength steel sheets in automobiles is mainly reflected in their superior corrosion resistance and enhanced structural strength. Galvanized high-strength steel sheets are coated with a layer of zinc, forming a protective layer that effectively prevents oxygen and moisture from directly contacting the steel substrate, thereby extending the service life of automotive components. Furthermore, the galvanizing process gives the steel sheet better hardness and strength, significantly improving the impact resistance and durability of the car body.

[0003] Galvanized high-strength steel sheets are rolled into open or closed tubular components using roll forming technology. Closed components require a series of processes including an uncoiler, feeding and loading machine, shearing and welding equipment, a stamping machine, forming components, laser welding equipment, post-forming equipment, cutting tools, and stacking equipment, ultimately forming a closed tube. The laser welding equipment used is a novel welding technology. Laser welding involves irradiating the workpiece surface with a high-energy laser beam, causing the workpiece to rapidly reach a molten state and fuse the parts together. During laser welding, a physicochemical thermal reaction process involving gas, liquid, and solid phases is typically involved. Because the boiling point of zinc (906℃) is much lower than the melting point of steel (1300℃), the galvanized layer immediately vaporizes upon exposure to high-energy laser light, generating a large amount of zinc vapor. This affects the stability of the welding process. Welding galvanized sheets produces significantly more spatter and fumes than ordinary steel. Therefore, controlling the fumes, spatter, and plasma plume generated during laser processing, while preventing high-temperature oxidation of the parts at the processing location, is a worthy research topic. To overcome these problems, this utility model proposes a dust collection device for roller-pressed online laser welding, which also has functions such as smoke extraction, air knife spraying, and plasma feather blowing. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems and shortcomings of the existing technology by providing a dust collection device for online laser welding of roll forming equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dust collection device for online laser welding of roll forming includes a universal mounting frame, a dust collection component, and an air blowing component. The universal mounting frame is fixedly installed on the mounting platform of the online laser welding production line of roll forming. The dust collection component is detachably installed on the universal mounting frame. The dust collection component includes a dust collection horn, one end of which is connected to and communicates with a dust collection hood. The other end of the dust collection horn is fixed to the universal mounting frame by a clamp. The other end of the dust collection horn is connected to a dust removal pipe, which is connected to a dust removal and purification device. The opening of the dust collection hood faces downward and towards the workpiece being welded. The front end of the air blowing component extends into the dust collection hood from the front side.

[0007] Furthermore, the front wall of the dust hood is provided with an observation window, the rear of the dust hood is connected to the dust suction horn, the top surface of the dust hood is provided with a top cover bottom plate, the top cover bottom plate is provided with a top waist-shaped opening for the laser coaxial air nozzle to extend into the dust hood, and the two sides of the dust hood are provided with baffles.

[0008] Furthermore, the top cover is provided on the bottom plate of the top cover, and the top cover is provided with a coaxial air blowing through sleeve, which is adapted to the laser coaxial air nozzle.

[0009] Furthermore, the top cover and the bottom plate of the top cover are fixedly connected by magnetic adsorption.

[0010] Furthermore, the observation window is detachably connected to the front wall of the dust hood, and the front wall of the dust hood has a slot into which the observation window can be inserted.

[0011] Furthermore, the observation window is made of transparent acrylic sheet.

[0012] Furthermore, the air blowing assembly includes an air knife and a quick-connect fitting, which are connected by threads. The quick-connect fitting is connected to a compressed gas device, the air knife extends into the dust collection hood, and the other end of the quick-connect fitting located outside the dust collection hood is connected to the compressed gas device.

[0013] Furthermore, the air knife is semi-circular, and the air outlet of the air knife located inside the dust collection hood faces the dust collection horn.

[0014] Furthermore, the universal mounting bracket includes a bracket base, on which a first support rod is connected. The upper end of the first support rod is connected to a second support rod via a first cross-shaped fixing clip. The front end of the second support rod is connected to a third support rod via a second cross-shaped fixing clip. The front end of the third support rod is connected to a dust collection assembly.

[0015] Furthermore, the bracket base is mounted on the mounting table of the online laser welding production line using countersunk screws.

[0016] The beneficial effects of this utility model are:

[0017] By setting up dust collection components and air blowing components, the dust collection component's suction nozzle is connected to the dust collection pipe, which is then connected to the dust removal and purification equipment for dust collection. The air blowing component is connected to a compressed gas device via a quick-connect fitting, and then blows gas from the narrow air outlet slot of the air blowing knife, blowing the spatter and fumes into the dust collection nozzle, and then into the dust removal and purification equipment through the dust collection pipe. This reduces the diffusion of welding fumes and spatter into the air, ensures the air quality in the welding workshop, protects the production environment of operators and the safety and environmental protection environment of the enterprise, and improves production efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of this utility model;

[0019] Figure 2 Rear view of this utility model;

[0020] Figure 3 A schematic diagram of the dust collection cover of this utility model;

[0021] Figure 4 A schematic diagram of the top cover of this utility model;

[0022] Figure 5 A view of the air blowing assembly of this utility model;

[0023] Figure 6 This utility model is shown in the schematic diagram of its installation location on the online laser welding production line for roller pressing.

[0024] In the diagram: 1 Universal mounting bracket, 1-1 bracket base, 1-2 First support rod, 1-3 First cross-shaped fixing clip, 1-4 Second support rod, 1-5 Twentieth cross-shaped fixing clip, 1-6 Third support rod, 1-7 Clamp, 2 Dust collection assembly, 2-1 Dust collection horn, 2-2 Dust collection hood, 2-21 Top cover, 2-22 Coaxial air blowing through hole sleeve, 2-23 Top cover bottom plate, 2-24 Magnetic block, 2-25 Observation window, 2-26 Top waist-shaped opening, 2-27 Dust collection port, 2-28 Air knife fixing hole, 2-29 Baffle, 3 Air blowing assembly, 3-1 Air knife, 3-2 Quick connector. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figures 1-6As shown, a dust collection device for roll forming online laser welding includes a universal mounting frame 1, a dust collection component 2, and an air blowing component 3. The universal mounting frame 1 is fixedly installed on the mounting platform of the roll forming online laser welding production line. The dust collection component 2 is detachably installed on the universal mounting frame 1. The universal mounting frame 1 is used to adjust the position of the dust collection component 2 on the roll forming online laser welding production line. The dust collection component 2 is connected to the air blowing component 3.

[0028] like Figure 2 As shown, the vacuum assembly 2 includes a vacuum nozzle 2-1. One end of the vacuum nozzle 2-1 has a rectangular cross-section, allowing it to fit snugly against the rear connecting surface of the vacuum hood 2-2 and be secured with four screws to ensure no air leakage during vacuuming, thus guaranteeing vacuuming efficiency. The other end of the vacuum nozzle 2-1 is fixed to the universal mounting bracket 1 via a cross-shaped clamp 1-7. The other end of the vacuum nozzle 2-1 is connected to a dust removal pipe, which in turn connects to a dust removal and purification device. The other end of the vacuum nozzle 2-1 has a circular cross-section, facilitating connection to the vacuum pipe and ensuring the vacuum assembly 2 is stably fixed to the universal mounting bracket 1 via the clamp 1-7. This prevents displacement of the vacuum assembly 2 due to vibration during operation, ensuring continuous vacuuming stability. Both tiny dust particles and larger welding spatter can be efficiently sucked in, preventing their accumulation around the welding area, thus effectively guaranteeing the welding quality and surface quality of the product and avoiding welding defects and surface flaws caused by impurities.

[0029] like Figure 3 or Figure 4 As shown, the rear of the dust hood 2-2 is an empty frame, which serves as the suction port 2-27, connected to the suction nozzle 2-1. The top surface of the dust hood 2-2 is a top cover base plate 2-23, with a top waist-shaped opening 2-26 for the laser coaxial nozzle to extend into the dust hood 2-2; the top waist-shaped opening 2-26 facilitates the movement of the laser coaxial nozzle. A top cover 2-21 is mounted on the top cover base plate 2-23, and the top cover 2-21 is magnetically connected to the top cover base plate 2-23 via a magnetic block 2-24. A coaxial air blowing through-hole sleeve 2-22 is mounted on the top cover 2-21, which is compatible with the laser coaxial nozzle. The lower end of the laser coaxial air nozzle extends sequentially from the coaxial air blowing through-hole sleeve 2-22 and the top waist-shaped opening 2-26 into the dust collection hood 2-2. The laser coaxial air nozzle is located 5-10mm above the surface of the workpiece being welded. The coaxial air blowing nozzle is used to release inert gas to provide inert gas protection for the workpiece being welded, reduce the risk of oxidation of the weld during the welding process, and ensure an oxygen-free environment for the weld pool.

[0030] The coaxial air-blowing through-hole sleeve 2-22 in the center of the top cover 2-21 is perfectly matched to the size of the laser coaxial air-blowing nozzle, ensuring that the coaxial air-blowing nozzle can enter smoothly without affecting its normal operation. The square top cover 2-21 is made of lightweight but strong material, which can effectively cover the top waist-shaped opening 2-26 to prevent smoke and dust from leaking from the top. The top cover 2-21 and the bottom plate 2-23 are attracted by magnetic blocks 2-24, which have sufficient attraction to firmly hold the top cover 2-21 and the bottom plate 2-23 together, achieving a reliable top seal. Even under equipment vibration, it can maintain good sealing performance, further improving the overall dust collection effect of the dust collection hood 2-22.

[0031] like Figures 2-6 As shown, the opening of the dust collection hood 2-2 faces downwards and towards the workpiece being laser welded online. Baffles 2-29 are installed on both sides of the dust collection hood 2-2, and an observation window 2-25 is provided on the front wall of the dust collection hood 2-2. The observation window 2-25 is made of transparent acrylic sheet, which is anti-splash and anti-laser radiation, and has high transparency and good impact resistance. It can clearly show the status of the coaxial laser nozzle inside the dust collection hood 2-2. Operators can check at any time whether the nozzle is working properly and whether there are any problems such as blockage or misalignment without complicated operations, so as to make timely adjustments and maintenance, ensuring the stability and continuity of the laser welding process.

[0032] like Figure 1 or Figure 5 As shown, the front end of the air blowing assembly 3 extends into the dust collection hood 2-2 from the front side. The front wall of the dust collection hood 2-2 has an air knife fixing hole 2-28 for mounting the air blowing assembly 3. The air blowing assembly 3 includes an air knife 3-1 and a quick-connect connector 3-2, which are connected by threads. The quick-connect connector 3-2 is connected to a compressed gas device. The air knife 3-1 extends into the dust collection hood 2-2, and the other end of the quick-connect connector 3-2, located outside the dust collection hood 2-2, is connected to the compressed gas device to provide high-pressure air to the air knife 3-1, blowing the spatter and fumes generated during laser welding towards the dust collection port 2-27, where they are then sucked away by the dust removal and purification equipment. The air knife 3-1 is semi-circular, and the air outlet of the air knife 3-1 located inside the dust collection hood faces the dust collection horn 2-1. The height of the air knife 3-1 is located 30-45mm above the surface of the workpiece being welded. The air blowing assembly 3 uses high-pressure air to not only suppress splashes flying upwards, but also blows the splashed smoke and dust towards the dust inlet 2-27, which can also effectively prevent splashes from damaging the observation window 2-25.

[0033] The compressed gas device and dust removal and purification equipment mentioned in this embodiment are commercially available products.

[0034] In summary, the dust collection device for online laser welding of roll forming in this embodiment, through the careful design and coordinated operation of each component, can efficiently remove spatter and welding fumes during the laser welding process, ensuring the welding quality and surface quality of the product. At the same time, it has good maintainability and stability, providing a reliable fume treatment solution for laser welding processes in industrial production.

[0035] Example 2

[0036] The difference between this embodiment and Embodiment 1 is that, Figure 1 As shown, the universal mounting bracket 1 includes a bracket base 1-1, which is mounted on the mounting table of the online laser welding production line using countersunk screws. A first support rod 1-2 is connected to the bracket base 1-1; that is, the bracket base 1-1 has an internal thread at its center, and the lower section of the first support rod 1-2 has an external thread matching the internal thread, which connects with the internal thread at the center of the bracket base 1-1. The upper end of the first support rod 1-2 is connected to a second support rod 1-4 via a first cross-shaped clamp 1-3 and secured with screws and nuts. The front end of the second support rod 1-4 is connected to a third support rod 1-6 via a second cross-shaped clamp 1-5 and also secured with screws and nuts. The front end of the third support rod 1-6 is connected to a dust collection assembly 2 and secured via either the first cross-shaped clamp 1-3 or the second cross-shaped clamp 1-5, allowing adjustment of the height, angle, and length of the dust collection assembly 2 connected to the universal mounting bracket 1.

[0037] In addition, the dust collection component 2 is fixed by the universal mounting bracket 1, which is simple and easy to use and has good stability. When the dust collection component 2 needs to be disassembled for maintenance, the operator only needs to loosen the clamps 1-7 to easily remove the dust collection component 2, which facilitates the inspection, cleaning and maintenance of the internal parts of the dust collection component 2, the air blowing component 3 and other components, greatly reducing the difficulty and cost of equipment maintenance and improving the availability and production efficiency of the equipment.

[0038] Example 3

[0039] The difference between this embodiment and embodiment 2 is that the observation window 2-25 is detachably connected to the front wall of the dust cover 2-2. The front wall of the dust cover 2-2 is provided with a slot for inserting the observation window 2-25. The two sides of the observation window 2-25 are respectively inserted into the slots on the corresponding sides. The observation window 2-25 can be pulled up and down, which makes it convenient to replace the observation window 2-25 in time when it is damaged.

[0040] Example 4

[0041] The difference between this embodiment and embodiment 3 is that, for example Figure 3As shown, the dust hood 2-2 has baffles 2-29 on both sides. The lower side of the baffles 2-29 has rectangular notches. The rectangular notches of the baffles 2-29 make the lower side of the baffles 2-29 similar in shape to the upper surface of the welding workpiece, which makes it easier to control the gap between the baffles 2-29 and the welding workpiece.

[0042] Example 5

[0043] The difference between this embodiment and Embodiment 4 is that the baffle 2-29, front wall, rear empty frame, and top cover / bottom plate 2-23 of the dust hood 2-2 are all made of lightweight, high-temperature resistant material. This material can withstand the high temperatures generated during laser welding and is lightweight, making it easy to install and adjust. The interior is coated with an anti-slag coating (commercially available coating) to prevent splatter from adhering to the inner wall. It has excellent anti-adhesion properties, effectively preventing splatter from sticking to the inner wall. Even during prolonged use, the interior of the dust hood 2-2 remains relatively clean, reducing the decrease in dust collection efficiency caused by slag buildup, while also reducing the frequency of cleaning and maintenance, extending the equipment's lifespan, and providing strong support for efficient production in enterprises.

[0044] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A dust collection device for roll forming in-line laser welding, characterized in that, The assembly includes a universal mounting bracket (1), a dust collection component (2), and an air blowing component (3). The universal mounting bracket (1) is fixedly installed on the mounting platform. The dust collection component (2) is detachably installed on the universal mounting bracket (1). The dust collection component (2) includes a dust collection horn (2-1). One end of the dust collection horn (2-1) is connected to and communicates with the dust collection hood (2-2). The other end of the dust collection horn (2-1) is fixed to the universal mounting bracket (1) by a clamp (1-7). The opening of the dust collection hood (2-2) faces downward and towards the welding workpiece. The front end of the air blowing component (3) extends from the front side of the dust collection hood (2-2) into the dust collection hood (2-2).

2. The dust collection device for online laser welding of roll forming according to claim 1, characterized in that, The front wall of the dust hood (2-2) is provided with an observation window (2-25). The rear of the dust hood (2-2) is connected to the dust suction horn (2-1). The top surface of the dust hood (2-2) is provided with a top cover bottom plate (2-23). ​​The top cover bottom plate (2-23) is provided with a top waist-shaped opening (2-26) for the laser coaxial air nozzle to extend into the dust hood (2-2). The two sides of the dust hood (2-2) are provided with baffles (2-29).

3. A dust collection device for online laser welding of roll forming according to claim 2, characterized in that, The top cover (2-21) is provided on the bottom plate (2-23), and the top cover (2-21) is provided with a coaxial air blowing through sleeve (2-22), which is compatible with the laser coaxial air nozzle.

4. A dust collection device for online laser welding of roll forming according to claim 3, characterized in that, The top cover (2-21) and the bottom plate of the top cover (2-23) are fixedly connected by magnetic blocks (2-24).

5. A dust collection device for online laser welding of roll forming according to claim 2, characterized in that, The observation window (2-25) is detachably connected to the front wall of the dust hood (2-2), and the front wall of the dust hood (2-2) is provided with a slot into which the observation window (2-25) can be inserted.

6. A dust collection device for in-line laser welding of roll forming according to claim 2, characterized in that, The observation window (2-25) is made of transparent acrylic sheet.

7. A dust collection device for online laser welding of roll forming according to claim 1, characterized in that, The air blowing assembly (3) includes an air knife (3-1) and a quick connector (3-2). The air knife (3-1) and the quick connector (3-2) are connected by threads. The air knife (3-1) extends into the dust hood (2-2). The other end of the quick connector (3-2) located outside the dust hood (2-2) is connected to a compressed gas device.

8. A dust collection device for in-line laser welding of roll forming according to claim 7, characterized in that, The air knife (3-1) is semi-arc-shaped, and the air outlet of the air knife (3-1) located inside the dust collection hood (2-2) faces the dust collection horn (2-1).

9. A dust collection device for online laser welding of roll forming according to claim 1, characterized in that, The universal mounting bracket (1) includes a bracket base (1-1), on which a first support rod (1-2) is connected. The upper end of the first support rod (1-2) is connected to a second support rod (1-4) through a first cross-shaped fixing clip (1-3). The front end of the second support rod (1-4) is connected to a third support rod (1-6) through a second cross-shaped fixing clip (1-5). The front end of the third support rod (1-6) is connected to a dust collection assembly (2).

10. A dust collection device for roll forming in-line laser welding according to claim 9, characterized in that, The bracket base (1-1) is mounted on the mounting table of the online laser welding production line by countersunk screws.

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