A laser cutting machine dust removal system, a laser cutting machine and a dust removal method

Abstract

The application provides a laser cutting machine dust removal system, a laser cutting machine and a dust removal method, and relates to the field of laser cutting machines.The scheme is as follows: a table dust removal device is arranged, the table dust removal device comprises a dust removal pipeline and a follow-up component, the dust removal pipeline can be arranged on a bed body, the follow-up component can move with a cross beam, the follow-up component is used for allowing flue gas to enter the dust removal pipeline, a dust removal fan one is further arranged, the dust removal fan one is provided with at least two, a plurality of dust removal fans one are arranged along the moving direction of the cross beam and / or the length direction of the cross beam, the plurality of dust removal fans one can be arranged on the top surrounded by the cross beam, the dust removal fan one is respectively connected with a top air duct, the plurality of top air ducts are respectively connected with a main air duct, and the main air duct is connected with the dust removal pipeline.The application can comprehensively adsorb flue gas and improve the dust removal effect.

Description

Technical Field

[0001] This invention relates to the field of laser cutting machines, and more particularly to a dust removal system for laser cutting machines, a laser cutting machine, and a dust removal method. Background Technology

[0002] Laser cutting generates a large amount of slag and fumes during processing. With the help of processing auxiliary gas, the fumes spread around the equipment, causing pollution to the working environment and damage to the optical components of the cutting head. In addition, the fumes contain a large number of chemical components, which can cause certain harm to the human respiratory system.

[0003] In related technologies, a follow-up dust removal structure is installed inside a laser cutting machine tool, including an X-axis exhaust duct connected to an X-axis dust removal fan. A follower component is mounted on the X-axis exhaust duct and communicates internally with the duct. A belt is also mounted on the top surface of the X-axis exhaust duct. An upper roller is located at the top of the follower component, and lower rollers are located at both ends of its bottom. The belt wraps around from below the two lower rollers to above the upper rollers, with the belts on both sides of the follower component fitting against the X-axis. When the X-axis exhaust duct is in operation, the belts on both sides of the follower component adhere to the top surface of the X-axis exhaust duct to achieve a sealing effect. Due to the roller assembly inside the follower component, the belt inside the follower component is raised, exposing the X-axis exhaust port covered by the follower component and connecting it to the follower component. At the same time, the follower dust removal structure also includes a fan, and the fan blows towards the follower component. This solution can extract the smoke from the workbench, reducing the damage of smoke to the environment and human body.

[0004] When using the above technical solutions, there are likely to be assembly gaps at the connection points between the X-axis exhaust duct and other parts of the machine tool, causing air leakage in the system. The moving parts do not receive sufficient airflow, resulting in a decrease in the effective airflow and a large amount of smoke escaping. Furthermore, as the horizontal width and plate thickness of laser cutting machines continue to increase, the cutting range and cutting power also increase significantly, and the concentration and diffusion range of dust become more extensive. It is evident that even when using the above technical solutions, it is still impossible to suppress dust more effectively. Summary of the Invention

[0005] To address the technical problem of poor dust removal performance in existing laser cutting machines, this invention provides a laser cutting machine dust removal system, a laser cutting machine, and a dust removal method that can comprehensively adsorb fumes and improve dust removal efficiency.

[0006] In a first aspect, the present invention provides a dust removal system for a laser cutting machine to solve the above-mentioned technical problems, including a table dust removal device. The table dust removal device includes a connected dust removal pipe and a follower component. The follower component is used for flue gas to enter the dust removal pipe. The dust removal pipe can be installed on the machine bed. The follower component can move with the crossbeam. The system also includes a dust removal fan. At least two dust removal fans are provided. Multiple dust removal fans are arranged along the length direction of the crossbeam and / or the direction of movement of the crossbeam. Multiple dust removal fans can be installed at the top surrounded by the crossbeam. Each dust removal fan is connected to a top air duct. Multiple top air ducts are connected to a main air duct. The main air duct is connected to the dust removal pipe.

[0007] This invention utilizes multiple dust removal fans arranged along the moving and length directions of the beam, in conjunction with the top air duct, main air duct, and dust removal pipe to form a three-dimensional dust removal system that works in synergy. This not only expands the dust removal coverage area but also comprehensively captures smoke and dust generated at different locations within the space surrounded by the beam, forming a multi-dimensional and high-intensity dust removal mechanism that significantly improves overall dust removal efficiency and effect.

[0008] Furthermore, the air inlet of the top air duct is connected to a hood, the air inlet of the hood is equipped with the first dust removal fan, the air inlet of the first dust removal fan is equipped with an air duct, the air duct has a trumpet-shaped structure, the narrow end of the air duct is connected to the air inlet of the first dust removal fan, and the main air duct is equipped with a third dust removal fan.

[0009] This invention effectively expands the cross-sectional area of ​​the air inlet by setting up an air hood, reducing the local resistance when the airflow enters, making it easier for the dust collector fan to draw in the dust and smoke airflow in the top air duct, thus improving the overall air intake efficiency. At the same time, the air hood makes the dust and smoke airflow entering the dust collector fan more concentrated, reducing airflow dispersion and turbulence, thereby improving the fan's suction effect and enhancing its dust removal capacity.

[0010] Furthermore, it also includes multiple smoke concentration sensors, which can be installed on the beam and inside the beam enclosure.

[0011] This invention enables the detection of smoke concentration at different locations by setting up multiple smoke concentration sensors, providing a basis for dynamically adjusting operating parameters.

[0012] Furthermore, a partition is vertically arranged inside the follower component, which divides the cavity of the follower component into a first chamber and a second chamber. The first chamber is connected to the lower part of the bed worktable, the second chamber is connected to the main air duct, and both the first chamber and the second chamber are connected to the dust removal pipe.

[0013] Furthermore, multiple layers of flow dividers are horizontally arranged inside the second chamber, and the flow dividers have a mesh structure.

[0014] This invention, by setting up multi-layer diversion plates, can divide and buffer the airflow discharged from the main air duct, making it form a very small vortex, thereby greatly increasing the mixing area between the airflow and the surrounding air, making the airflow discharged from the second chamber very gentle, and avoiding resistance to the second dust removal fan.

[0015] Furthermore, the upper surface of the dust removal pipe is provided with multiple exhaust ports along its length, and the upper surface of the dust removal pipe is also provided with a sealing strip along its length. The sealing strip can cover the exhaust ports. Multiple guide rollers are rotatably arranged inside the follower component. The sealing strip passes through the follower component and can generate rolling friction with the guide rollers. The guide rollers can lift the sealing strip located inside the follower component.

[0016] Furthermore, the tabletop dust removal device also includes a fan, which is movable with the crossbeam, and the air outlet of the fan is positioned opposite to the chamber.

[0017] Secondly, the present invention also provides a laser cutting machine, including a bed, a worktable provided on the bed, a crossbeam and a crossbeam surround movably arranged on the bed along its length, a laser cutting assembly provided on the crossbeam, and the aforementioned laser cutting machine dust removal system, wherein the dust removal duct is arranged on one side of the bed and connected to a second dust removal fan, the air hood and the top air duct are arranged on the top of the crossbeam surround, the main air duct is arranged on one side of the crossbeam surround, and the follower component and the fan are respectively connected to both ends of the crossbeam.

[0018] Thirdly, the present invention also provides a dust removal method for a laser cutting machine, employing the aforementioned laser cutting machine dust removal system, comprising the following steps: S01: Determine the initial operating parameters of dust collector fan one and dust collector fan two; S02: Before cutting, dust removal fan one and dust removal fan two set the working time based on the initial working parameters obtained in S01; S03: During the cutting process, the table dust removal device moves with the crossbeam to remove dust. The start and stop of the dust removal fan one in the corresponding area are controlled according to the position of the crossbeam and the laser cutting components. Furthermore, the working parameters of the fan, dust removal fan one, dust removal fan three and dust removal fan two are dynamically adjusted according to the changes in concentration and cutting power. S04: After cutting is completed, dust removal fan one, dust removal fan three and dust removal fan two will set the working time according to the last working parameters obtained in S03.

[0019] This invention significantly optimizes the dust removal efficiency and resource utilization of the dust removal system through dynamic control.

[0020] Furthermore, in S01, the initial operating parameters of dust collector fan one and dust collector fan two are determined based on the cutting power P, material type M, and plate thickness T. The operating parameters of dust collector fan one and dust collector fan two include operating air volume and operating air pressure. The working air volume of the dust removal fan 1 for: ≥k×f×N={k1+k2+k3}×f×N; The working air volume of the dust removal fan 2 for: ≥k×A×f×3600={k1+k2+k3}×A×f×3600; The working air pressure of the dust removal fan 1 for: ≥k×( + ); The working air pressure of the dust removal fan 2 for: ≥k× ; Where, k1 = 1 + 0.1 × J is the cutting power. k2: When the cutting material is aluminum alloy, k2 is 1.0; when the cutting material is carbon steel, k2 is 1.2; when the cutting material is stainless steel, k2 is 1.5. k3: When the thickness of the material being cut is less than 3mm, k3 is 1.0; when the thickness of the material being cut is between 3mm and 10mm, k3 is 1.2; when the thickness of the material being cut is greater than 10mm, k3 is 1.5. V represents the volume of the space enclosed by the beam, N represents the number of air changes, A represents the area of ​​the cut-off region, and f represents the wind speed for smoke and dust capture. The coefficient of friction between the top air duct and the main air duct. This is the total length of the top air duct and the main air duct. The equivalent diameter of the main air duct. For the density of the flue gas, The drag coefficient, The gas velocity inside the pipe. The equivalent diameter of the dust collection duct. This refers to the length of the dust removal duct.

[0021] This invention accurately calculates the initial operating parameters of the fan, dust removal fan one, and dust removal fan two based on three core process parameters: cutting power, material type, and plate thickness. This enables pre-adaptation to dust removal requirements and avoids insufficient dust removal or energy waste caused by differences in operating conditions in the traditional fixed parameter mode.

[0022] As can be seen from the above technical solutions, the present invention has the following advantages: This invention provides a dust removal system for a laser cutting machine, the laser cutting machine itself, and a dust removal method. Multiple dust removal fans arranged along the movement and length of the crossbeam, in conjunction with the top air duct, main air duct, and dust removal pipes, form a collaborative three-dimensional dust removal system. This not only expands the dust removal coverage area, enabling comprehensive capture of smoke and dust generated at different locations within the space surrounded by the crossbeam, but also creates a multi-dimensional, high-intensity dust removal mechanism, significantly improving overall dust removal efficiency and effect. By setting up an exhaust hood, the cross-sectional area of ​​the air inlet is effectively enlarged, reducing local resistance when the airflow enters, making it easier for the dust removal fans to draw in the smoke and dust airflow from the top air duct, improving overall air intake efficiency. Simultaneously, the exhaust hood concentrates the smoke and dust airflow entering the dust removal fans, reducing airflow dispersion and turbulence, thereby improving the fan's extraction efficiency. The system enhances suction efficiency and dust removal capabilities. Multiple smoke concentration sensors detect smoke concentrations at different locations, providing a basis for dynamically adjusting operating parameters. Multi-layered flow dividers separate and buffer the airflow from the main duct, creating tiny vortices that significantly increase the mixing area between the airflow and surrounding air, resulting in a very gentle airflow from chamber two and preventing resistance to the dust removal fan. Dynamic control significantly optimizes the dust removal efficiency and resource utilization of the system. Precise calculation of the initial operating parameters for the fan, dust removal fan one, and dust removal fan two based on three core process parameters—cutting power, material type, and plate thickness—achieves pre-adaptation to dust removal needs, avoiding insufficient dust removal or energy waste caused by differences in operating conditions in traditional fixed-parameter modes. Attached Figure Description

[0023] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention. Figure 1 .

[0025] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention. Figure 2 .

[0026] Figure 3This is a schematic diagram of the structure of the wind shield in Embodiment 1 of the present invention.

[0027] Figure 4 This is a schematic diagram of the assembly structure of the wind hood, the exhaust hood, and the dust removal fan in Embodiment 1 of the present invention.

[0028] Figure 5 This is a schematic diagram of the assembly structure of the follower component and the dust removal pipe in Embodiment 1 of the present invention.

[0029] Figure 6 This is a schematic diagram of the follower component in Embodiment 1 of the present invention. Figure 1 .

[0030] Figure 7 This is a schematic diagram of the assembly structure of the crossbeam surrounding the top air duct and the main air duct in Embodiment 2 of the present invention. Figure 1 .

[0031] Figure 8 This is a schematic diagram of the assembly structure of the crossbeam surrounding the top air duct and the main air duct in Embodiment 2 of the present invention. Figure 2 .

[0032] Figure 9 This is a schematic diagram of the assembly structure of the crossbeam surrounding the top air duct and the main air duct in Embodiment 2 of the present invention. Figure 3 .

[0033] Figure 10 This is a flowchart of Embodiment 3 of the present invention.

[0034] In the diagram, 1. Bed; 2. Crossbeam; 3. Follower component; 4. Dust removal duct; 5. Fan; 6. Crossbeam surround; 8. Top air duct; 9. Dust removal fan three; 10. Main air duct; 11. Dust removal fan one; 13. Exhaust hood; 14. Air hood; 15. Workbench; 16. Partition; 17. Smoke concentration sensor; 18. Diverter plate; 19. Sealing strip; 20. Guide roller; 21. Chamber one; 22. Chamber two; 23. Exhaust vent; 24. Dust removal fan two. Detailed Implementation

[0035] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0036] Example 1 like Figure 1 and Figure 2As shown in the figure, this specific embodiment provides a dust removal system for a laser cutting machine, including a table dust removal device. The table dust removal device includes a connected dust removal pipe 4 and a follower component 3. The dust removal pipe 4 can be installed on the bed 1. The follower component 3 can move with the crossbeam 2. The follower component 3 is used for flue gas to enter the dust removal pipe 4. It also includes a dust removal fan 11. At least two dust removal fans 11 are provided. Multiple dust removal fans 11 are arranged along the length direction of the crossbeam 2 and / or the moving direction of the crossbeam 2. Multiple dust removal fans 11 can be installed on the top of the crossbeam enclosure 6. Each dust removal fan 11 is connected to a top air duct 8. Multiple top air ducts 8 are connected to a main air duct 10. The main air duct 10 is connected to the dust removal pipe 4. In this embodiment, five dust removal fans 11 are provided on the top. The dust removal fans 11 are vortex centrifugal fans.

[0037] This embodiment utilizes multiple dust removal fans 11 arranged along the moving direction and length of the crossbeam 2, in conjunction with the top air duct 8, main air duct 10, dust removal pipe 4, and tabletop dust removal device to form a collaborative three-dimensional dust removal system. The arrangement of the follow-up component 3 and the top fans allows the dust removal range of this system to be not limited to the cutting area, but to capture smoke and dust in all directions above and around the entire cutting area, reducing the residue and diffusion of smoke and dust in the machine tool, and providing a more comprehensive dust removal coverage. At the same time, multiple top fans can work simultaneously to generate a stronger airflow, quickly blowing the smoke and dust in the space surrounding the crossbeam 6 towards the top air duct 8, and then discharging it through the main air duct 10 and dust removal pipe 4, forming a high-intensity dust removal mechanism, which greatly improves the overall dust removal efficiency and effect. In addition, the dust removal fans 11 are located at the top of the crossbeam surrounding 6 and are not affected by the movement of the crossbeam 2, reducing the instability factors caused by the movement of the crossbeam 2 and improving the stability of the system.

[0038] To further enhance the dust extraction and removal capabilities, such as Figure 3 and Figure 4As shown, a hood 14 is riveted to the air inlet end of the top air duct 8. The hood 14 is riveted to the corresponding position of the crossbeam surrounding 6. The dust collector fan 11 is installed at the air inlet of the hood 14. An air guide hood 13 is welded to the air inlet of the dust collector fan 11. The air guide hood 13 has a trumpet-shaped structure, and its narrow end is connected to the air inlet of the dust collector fan 11. By setting the trumpet-shaped air guide hood 13, the cross-sectional area of ​​the air inlet can be effectively increased, reducing the local resistance when the airflow enters, making it easier for the dust collector fan 11 to draw in the dust and smoke airflow in the top air duct 8, improving the overall air intake efficiency. At the same time, the trumpet-shaped shape of the air guide hood 13 can guide a wider range of airflow. The airflow converges towards the center, making the flue gas entering the dust collector fan 11 more concentrated, reducing airflow dispersion and turbulence, thereby improving the suction effect of the dust collector fan 11 and enhancing its dust removal capacity. Furthermore, a dust collector fan 39 is installed in the air inlet of the main air duct 10. The dust collector fan 39 is an axial flow fan. By installing the dust collector fan 39, on the one hand, the airflow delivery capacity is enhanced, providing strong suction power for the top air duct 8 and the main air duct 10, which increases the airflow speed in the main air duct 10 and more effectively transports the collected flue gas to the subsequent processing stage. On the other hand, the dust collector fan 39 can provide sufficient air pressure to overcome the resistance in the pipeline and ensure smooth airflow in the main air duct 10.

[0039] In this embodiment, as Figures 5 to 6 As shown, the follower component 3 is provided with an air inlet duct, and a partition 16 is vertically arranged inside the air inlet duct. The partition 16 divides the air inlet duct into a first chamber 21 and a second chamber 22. The first chamber 21 is connected to the lower part of the bed worktable, and the second chamber 22 is connected to the main air duct 10. Both the first chamber 21 and the second chamber 22 are connected to the dust removal pipe 4. A multi-layer diversion plate 18 is horizontally arranged inside the second chamber 22. The diversion plate 18 has a mesh structure. The partition 16 includes a guide part and a partition part. The guide part is inclinedly arranged on the upper part of the cavity of the follower component 3. After the configuration, the baffle 16 and the diverter 18 can smoothly guide the airflow. The baffle 16 divides the airflow into different channels, avoiding interference and turbulence between the airflow entering from the machine tool worktable 15 and the airflow entering from the main air duct 10, so that the flue gas can enter the dust removal pipe 4 more smoothly. At the same time, the multi-layer diverter 18 can divide and buffer the airflow discharged from the main air duct 10, making it form a very small vortex, thereby greatly increasing the mixing area between the airflow and the surrounding air, making the airflow discharged from the second chamber 22 very gentle, and avoiding resistance to the exhaust of the second dust removal fan 24.

[0040] In this embodiment, as Figure 5As shown, the dust removal duct 4 has multiple exhaust ports 23 arranged along its length on its upper surface. A sealing strip 19 is also arranged along its length on the upper surface of the dust removal duct 4, covering the exhaust ports 23. Multiple guide rollers 20 are rotatably arranged inside the follower component 3. The sealing strip 19 penetrates the follower component 3 and can generate rolling friction with the guide rollers 20. The guide rollers 20 can lift the sealing strip 19 located inside the follower component 3. The tabletop dust removal device also includes a fan 5, which can move with the crossbeam 2. The air outlet surface of the fan 5 is opposite to the chamber 21. Specifically, the follower component 3 has a rectangular shell structure with grooves on both sides of its bottom, which communicate with the internal cavity. The guide rollers 20 in the cavity are provided with... The machine tool has two rows of guide rollers 20 in each row. The bottom of the follower component 3 is equipped with rollers, which can move along the dust removal pipe 4. The belt enters from the groove on one side of the bottom of the follower component 3, contacts one of the guide rollers 20 in the lower row, enters the two guide rollers 20 in the upper row, then passes down through the other guide roller 20 in the lower row, and finally exits through the groove on the other side of the bottom of the follower component 3. The two sides of the belt are fixed to the two sides of the dust removal pipe. When working, the dust removal fan is turned on, forming a negative pressure. The belt is pressed against the upper part of the dust removal pipe 4. The follower component 3 moves under the drive of the crossbeam 2, so that the belt inside the follower component 3 is lifted, and the corresponding exhaust port 23 is exposed and connected to the space under the machine tool. Under the action of the fan 5, the flue gas under the bed 1 can enter the follower component 3 and be drawn into the dust removal pipe 4.

[0041] This embodiment also includes multiple smoke concentration sensors 17, which can be installed on the crossbeam 2 and inside the crossbeam enclosure 6. By installing multiple smoke concentration sensors 17, the smoke concentration at different locations can be detected, providing a basis for dynamically adjusting the working parameters.

[0042] Example 2 This embodiment provides a laser cutting machine, including a bed 1, a worktable 15 on the bed 1, a crossbeam 2 and a crossbeam surround 6 movably mounted on the bed 1 along its length, a laser cutting assembly on the crossbeam 2, and the aforementioned laser cutting machine dust removal system, as described above. Figures 7 to 9 As shown, the dust removal duct 4 is located on one side of the bed 1 and is connected to a dust removal fan 24. The air hood 14 and the top air duct 8 are installed on the top of the crossbeam enclosure 6 by bolts or welding. The main air duct 10 is located on one side of the crossbeam enclosure 6. The follower component 3 and the fan 5 are respectively connected to both ends of the crossbeam 2. In this embodiment, the crossbeam 2, the laser cutting assembly, the crossbeam enclosure 6, and the worktable 15 are all existing technologies and will not be described in detail here.

[0043] Specifically, two support bases are provided on both sides of the machine tool bed 1. The end of the crossbeam 2 is movably mounted on the support base. A support platform is provided between one of the support bases and the bed 1. A bracket is welded to one end of the crossbeam 2. The bracket and the support platform are slidably connected by a guide rail. The fan 5 is bolted to the bracket. The middle position of the fan 5 is opposite to the worktable 15 of the bed 1. The dust removal pipe 4 is provided between the other support base and the bed 1. The roller at the bottom of the follower component 3 rolls and rubs against the upper surface of the dust removal pipe 4.

[0044] When the crossbeam enclosure 6 and the crossbeam 2 move together, the main air duct 10 can be connected to the inner surface of the vertical wall of the crossbeam enclosure 6 through the connecting frame. When the crossbeam enclosure 6 and the crossbeam 2 move independently, the main air duct 10 can be connected to the crossbeam 2 through the connecting frame. The air outlet of the main air duct 10 and the following component 3 are connected through a telescopic pipe.

[0045] like Figure 7 As shown, in this embodiment, five dust removal fans 11 are provided, and the five dust removal fans 11 are distributed throughout the entire cutting area of ​​the top of the crossbeam surrounding 6.

[0046] Example 3 like Figure 10 As shown, this embodiment provides a dust removal method for a laser cutting machine, using the aforementioned laser cutting machine dust removal system, including the following steps: S01: Determine the initial operating parameters of dust collector fan 11 and dust collector fan 24; S02: Before cutting, dust removal fan 11 and dust removal fan 24 set the working time based on the initial working parameters obtained in S01. S03: During the cutting process, the table dust removal device moves with the crossbeam 2 to remove dust. The start and stop of the dust removal fan 11 in the corresponding area are controlled according to the position of the crossbeam 2 and the laser cutting component. The dust removal fan 39 works with the set working parameters. Furthermore, the working parameters of the fan 5, dust removal fan 11, dust removal fan 39 and dust removal fan 24 are dynamically adjusted according to the changes in concentration and cutting power. S04: After cutting is completed, dust removal fan 11, dust removal fan 39 and dust removal fan 24 will set the working time according to the last working parameters obtained in S03.

[0047] In this embodiment, dust removal fans 11 and 24 are activated before cutting to establish a stable airflow field and suppress the sudden emission of smoke and dust in the initial stage of cutting. Furthermore, a dual-mode collaborative control is adopted during the cutting process. The table dust removal device moves laterally and the start and stop of the corresponding dust removal fan 11 are controlled according to the location of the cutting area to achieve localized and precise dust removal. Based on real-time smoke concentration monitoring and dynamic changes in cutting power, the operating parameters of each fan are dynamically adjusted to solve the problem of over-extraction or under-extraction caused by static parameters in traditional dust removal systems. After cutting, the delayed cleaning stage continues the operation of the optimal parameters set at the end to ensure that residual smoke and dust are completely removed and to avoid environmental pollution. This comprehensive approach achieves a rapid effect of efficient dust removal, precise energy consumption control, and extended equipment life.

[0048] In S01, the initial operating parameters of dust collector fan 11 and dust collector fan 24 are determined based on the cutting power P, material type M, and plate thickness T. The initial operating parameters of dust collector fan 11 and dust collector fan 24 include the initial operating air volume and the initial operating air pressure. The initial operating air volume of the dust collector fan 1 for: ≥k×f×N={k1+k2+k3}×f×N; The initial operating air volume of the dust collector fan 2 for: ≥k×A×f×3600={k1+k2+k3}×A×f×3600; The initial operating air pressure of the dust collector fan 1 for: ≥k×( + ); The initial operating air pressure of the dust collector fan 2 for: ≥k× ; Where, k1 = 1 + 0.1 × J is the cutting power. k2: When the cutting material is aluminum alloy, k2 is 1.0; when the cutting material is carbon steel, k2 is 1.2; when the cutting material is stainless steel, k2 is 1.5. k3: When the thickness of the material being cut is less than 3mm, k3 is 1.0; when the thickness of the material being cut is between 3mm and 10mm, k3 is 1.2; when the thickness of the material being cut is greater than 10mm, k3 is 1.5. V represents the volume of the space enclosed by the crossbeam, N represents the air exchange rate (the number of times the air within the crossbeam is completely removed per unit time, taken as 3 times / minute in this embodiment), A represents the cutting area, typically a 0.2m × 0.2m area around the laser cutting component, and f represents the dust capture wind speed, taken as 1.5m / s in this embodiment. The friction coefficient between the top air duct and the main air duct is given. In this embodiment, the pipe material is galvanized pipe. Take 0.2, This is the total length of the top air duct and the main air duct. The equivalent diameter of the main air duct. For the density of the flue gas, The drag coefficient is set to 2.5 in this embodiment. The gas velocity inside the pipe is taken as 10 m / s in this embodiment. The equivalent diameter of the dust collection duct. This refers to the length of the dust removal duct.

[0049] This embodiment accurately calculates the initial operating parameters of dust removal fan one and dust removal fan two based on three core process parameters: cutting power, material type, and plate thickness. This achieves pre-adaptation to dust removal requirements and avoids insufficient dust removal or energy waste caused by differences in operating conditions in the traditional fixed parameter mode.

[0050] In this embodiment, in S01, the initial operating parameters of the fan and the dust removal fan are fixed values.

[0051] As can be seen from the above specific embodiments, the present invention has the following beneficial effects: 1. By arranging multiple dust removal fans 11 along the moving direction and length direction of the crossbeam 2, and cooperating with the top air duct 8, the main air duct 10 and the dust removal pipe 4 to form a three-dimensional dust removal system, it not only expands the dust removal coverage area, but also can fully capture the smoke and dust generated in different positions within the space surrounded by the crossbeam 6, forming a multi-dimensional and high-intensity dust removal mechanism, which greatly improves the overall dust removal efficiency and dust removal effect. 2. By setting the air intake hood 13, the cross-sectional area of ​​the air inlet can be effectively expanded, reducing the local resistance when the airflow enters, making it easier for the dust collector fan 11 to draw in the dust and smoke airflow in the top air duct, improving the overall air intake efficiency. At the same time, the air intake hood makes the dust and smoke airflow entering the dust collector fan 11 more concentrated, reducing airflow dispersion and turbulence, thereby improving the fan's suction effect and enhancing dust removal capacity. 3. By setting multiple smoke concentration sensors 17, the smoke concentration at different locations can be detected, providing a basis for dynamically adjusting the working parameters; 4. By setting up multi-layer diversion plates 18, the airflow discharged from the main air duct can be divided and buffered, forming a very small vortex, thereby greatly increasing the mixing area between the airflow and the surrounding air, making the airflow discharged from chamber 22 very gentle, and avoiding resistance to the exhaust of dust removal fan 24. 5. Dynamic control significantly optimized the dust removal efficiency and resource utilization of this dust removal system; 6. Based on the three core process parameters of cutting power, material type and plate thickness, the initial working parameters of the fan, dust removal fan 11 and dust removal fan 24 are accurately calculated to achieve pre-adaptation to dust removal requirements, avoiding insufficient dust removal or energy waste caused by differences in working conditions in the traditional fixed parameter mode.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust removal method for a laser cutting machine, characterized in that, For a laser cutting machine, the laser cutting machine includes a bed (1), a laser cutting assembly, and a laser cutting machine dust removal system. A crossbeam (2) and a crossbeam surround (6) are movably arranged along the length of the bed (1). The laser cutting assembly is arranged on the crossbeam (2). The laser cutting machine dust removal system includes a table dust removal device, which includes a dust removal fan (11), a fan (5), a connected dust removal duct (4), and a follower component (3). The dust removal duct (4) is located on one side of the bed (1) and connected to a second dust removal fan (24). The follower component (3) is used to allow flue gas to enter the dust removal duct (4). Inside the beam (2), the follower component (3) can move with the crossbeam (2), and multiple dust removal fans (11) are provided. Multiple dust removal fans (11) can be set on the top of the beam enclosure (6). Multiple dust removal fans (11) are arranged along the length direction of the crossbeam (2) and / or the moving direction of the crossbeam (2). Each dust removal fan (11) is connected to a top air duct (8). Multiple top air ducts (8) are connected to the main air duct (10). A dust removal fan (9) is provided in the main air duct (10). The main air duct (10) is connected to the dust removal pipe (4). The fan (5) can move with the crossbeam (2). The dust removal method for the laser cutting machine includes the following steps: S01: Determine the initial working parameters of dust removal fan one (11) and dust removal fan two (24). Based on the cutting power P, material type M and plate thickness T, determine the initial working parameters of dust removal fan one (11) and dust removal fan two (24). The initial working parameters of dust removal fan one (11) and dust removal fan two (24) include the initial working air volume and the initial working air pressure. S02: Before cutting, dust removal fan one (11) and dust removal fan two (24) operate for a set duration using the initial working parameters obtained in S01; S03: During the cutting process, the table dust removal device moves with the crossbeam (2) to remove dust. The start and stop of the dust removal fan 1 (11) in the corresponding area are controlled according to the position of the crossbeam (2) and the laser cutting component. In addition, the working parameters of the fan (5), dust removal fan 1 (11), dust removal fan 3 (9) and dust removal fan 2 (24) are dynamically adjusted according to the changes in smoke concentration and cutting power. S04: After the cutting is completed, dust removal fan one (11), dust removal fan three (9) and dust removal fan two (24) will work for the set duration according to the working parameters obtained in S03.

2. The dust removal method for a laser cutting machine as described in claim 1, characterized in that, The air inlet of the top air duct (8) is connected to the air hood (14), the air inlet of the air hood (14) is provided with the dust removal fan (11), the air inlet of the dust removal fan (11) is provided with the air duct hood (13), the air duct hood (13) has a trumpet-shaped structure, and the narrow end of the air duct hood (13) is connected to the air inlet of the dust removal fan (11).

3. The dust removal method for a laser cutting machine as described in claim 2, characterized in that, The tabletop dust removal device also includes multiple smoke concentration sensors (17), which can be installed on the crossbeam (2) and inside the crossbeam enclosure (6).

4. The dust removal method for a laser cutting machine as described in claim 3, characterized in that, The follower component (3) is vertically provided with a partition (16), which divides the cavity of the follower component (3) into a first chamber (21) and a second chamber (22). The first chamber (21) is connected to the lower part of the workbench (15) on the bed (1), and the second chamber (22) is connected to the main air duct (10). Both the first chamber (21) and the second chamber (22) are connected to the dust removal pipe (4).

5. The dust removal method for a laser cutting machine as described in claim 4, characterized in that, The chamber 2 (22) is horizontally provided with a multi-layer diversion plate (18), which has a mesh structure.

6. The dust removal method for a laser cutting machine as described in claim 5, characterized in that, The dust removal pipe (4) has multiple exhaust ports (23) arranged along its length on its upper surface. The dust removal pipe (4) also has a sealing strip (19) arranged along its length on its upper surface. The sealing strip (19) can cover the exhaust ports (23). Multiple guide rollers (20) are rotatably arranged inside the follower component (3). The sealing strip (19) passes through the follower component (3) and can generate rolling friction with the guide rollers (20). The guide rollers (20) can lift the sealing strip (19) located inside the follower component (3).

7. The dust removal method for a laser cutting machine as described in claim 4, characterized in that, The air outlet surface of the fan (5) is positioned opposite to the chamber (21).

8. The dust removal method for a laser cutting machine as described in claim 1, characterized in that, In S01, The initial operating air volume of the dust removal fan (11) for: ≥k×f×N={k1+k2+k3}×f×N; The initial operating air volume of the dust removal fan 2 (24) for: ≥k×A×f×3600={k1+k2+k3}×A×f×3600; The initial operating air pressure of the dust removal fan (11) for: ≥k×（ + ）； The initial operating air pressure of the dust removal fan 2 (24) for: ≥k× ； Where, k1 = 1 + 0.1 × J is the cutting power. k2: When the cutting material is aluminum alloy, k2 is 1.0; when the cutting material is carbon steel, k2 is 1.2; when the cutting material is stainless steel, k2 is 1.

5. k3: When the thickness of the material being cut is less than 3mm, k3 is 1.0; when the thickness of the material being cut is between 3mm and 10mm, k3 is 1.2; when the thickness of the material being cut is greater than 10mm, k3 is 1.

5. k = k1 + k2 + k3, N is the number of air changes, A is the area of ​​the cutting region, and f is the wind speed for smoke and dust capture. The friction coefficients of the top air duct (8) and the main air duct (10) are given. The total length of the top air duct (8) and the main air duct (10) is given. The equivalent diameter of the main air duct (10), For the density of the flue gas, The drag coefficient, The gas velocity inside the pipe. The equivalent diameter of the dust removal pipe (4) is The length of the dust removal pipe (4) is given.

9. A laser cutting machine, comprising a bed (1) and a worktable (15) provided on the bed (1), characterized in that, The laser cutting machine is used in the laser cutting machine dust removal method as described in claim 2. The hood (14) and the top air duct (8) are located on the top of the beam enclosure (6). The main air duct (10) is located on one side of the beam enclosure (6). The follower (3) and the fan (5) are respectively connected to both ends of the beam (2).

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