Laser cutting machine

Abstract

The invention discloses a laser cutting machine, and relates to the technical field of cutting equipment, the laser cutting machine comprises a rack, a grating placed on the rack and a slag cleaning mechanism linearly moving along the rack, and the slag cleaning mechanism is provided with a rotary cleaning assembly capable of jumping up and down. The rack is provided with a fluctuating guide rail in the moving direction of the slag cleaning mechanism, and the rotary cleaning assembly can jump up and down along with fluctuating of the guide rail in the process that the slag cleaning mechanism linearly moves along the rack so as to be attached to the sawtooth-tip-shaped grating. According to the slag cleaning mechanism, by arranging the rotary cleaning assembly which can fluctuate and jump along with the sawtooth tip shape of the grating, it can be guaranteed that in the process that the slag cleaning mechanism linearly moves along the rack, the rotary cleaning assembly is always kept to be attached to the grating, meanwhile, residual slag on the grating can be scraped away through rotation, and the cleaning efficiency is improved. And therefore, the slag remaining on the grating can be thoroughly and efficiently removed.

Description

Technical Field

[0001] This application relates to the field of cutting equipment technology, specifically to a laser cutting machine. Background Technology

[0002] Laser cutting machines use a high-power-density laser beam to irradiate the surface of a material, causing it to melt, vaporize, or burn rapidly. At the same time, auxiliary gas is used to blow away the molten material, thereby achieving precise cutting.

[0003] Laser cutting uses an invisible beam of light instead of traditional mechanical tools. It features high precision, fast cutting speed, no limitation on cutting patterns, automatic layout to save materials, smooth cuts, and low processing costs. It will gradually improve or replace traditional metal cutting equipment.

[0004] When using a laser cutting machine, a grid is often laid at the bottom of the operating table to support the material. The grid is a vertical plate with serrated edges and upward-pointing corners. During the cutting operation, the material to be cut is placed on the grid frame, and the laser cutting head is driven to rise and fall vertically relative to the machine frame to cut the steel to meet the actual processing needs. However, when the cutting device in the relevant technology cuts steel, the laser cutting head will splatter a lot of molten slag in all directions at the cutting point of the steel. The molten slag is easy to adhere to the grid frame, making the plate less stable when placed on the grid frame, affecting the cutting accuracy of the plate. Therefore, the grid frame needs to be cleaned by the staff regularly, which increases the labor intensity of the staff and affects the cutting efficiency of the steel. Summary of the Invention

[0005] To address the issue in existing laser cutting machines where molten slag splashes and adheres to the grid frame during the cutting process, requiring regular cleaning by staff, increasing labor intensity, and affecting workpiece cutting efficiency, this application provides a laser cutting machine.

[0006] The technical solution adopted in this application is as follows: A laser cutting machine includes a frame and a grid placed on the frame, and a slag cleaning mechanism that moves linearly along the frame. The slag cleaning mechanism has a rotary cleaning component capable of jumping up and down. The frame is provided with an undulating guide rail along the direction of movement of the slag cleaning mechanism. The rotary cleaning component can jump up and down with the undulation of the guide rail as the slag cleaning mechanism moves linearly along the frame to maintain contact with the serrated grid.

[0007] Furthermore, the rotary cleaning assembly includes: A rotating shaft, on which a plurality of grooved cleaning wheels are arranged alternately, and one end of the rotating shaft is connected to a rotary motor via a coupling; The U-shaped lifting bracket has guide rollers at both ends that fit with the guide rail, and at least one connecting arm is provided between the two ends of the U-shaped lifting bracket. The end of the connecting arm is connected to the rotating shaft through a bearing mechanism.

[0008] Furthermore, the guide track includes a wavy track surface with the same undulating shape as the sawtooth tip of the grille, and the guide roller remains in contact with the wavy track surface.

[0009] Furthermore, the slag cleaning mechanism also includes a component support, the component support comprising: The main support is a solid cuboid with a through-hole from bottom to top. The two ends of the main support are provided with first guide grooves. The rotating shaft is placed horizontally inside the main support, and one end of the rotating shaft is limited and guided by the first guide groove. The rotating motor is limited and guided by the other first guide groove. The connecting arm extends upward from the main support. The secondary support is a U-shaped frame with second guide grooves at both ends. The two ends of the U-shaped lifting support extend from the second guide grooves and are limited and guided by the second guide grooves.

[0010] Furthermore, the two ends of the U-shaped lifting bracket are provided with wheel frames for mounting the guide rollers.

[0011] Furthermore, the cleaning wheel has an inner wheel surface and a side wheel surface, the inner wheel surface being in contact with the outer surface of the grille, and the side wheel surface being in contact with the outer vertical surface of the grille.

[0012] Furthermore, the frame is provided with a linear drive mechanism for driving the slag cleaning mechanism to move linearly.

[0013] Furthermore, the linear drive mechanism includes a guide rod shaft and a lead screw shaft arranged parallel to the frame, the slag cleaning mechanism is connected to the guide rod shaft and the lead screw shaft, and the lead screw shaft is connected to a linear drive motor through a coupling.

[0014] Furthermore, the two ends of the main support are respectively provided with a smooth bushing connected to the optical rod shaft and a threaded bushing connected to the lead screw shaft.

[0015] Furthermore, the distance between adjacent cleaning wheels is equal to the gap between adjacent grilles.

[0016] Compared with the prior art, the beneficial effects of this application are: This application discloses a laser cutting machine, including a frame and a grid placed on the frame, and a slag cleaning mechanism that moves linearly along the frame. The slag cleaning mechanism has a rotary cleaning component capable of jumping up and down. The frame is provided with an undulating guide rail along the moving direction of the slag cleaning mechanism. The rotary cleaning component can jump up and down with the undulation of the guide rail during the linear movement of the slag cleaning mechanism along the frame to maintain contact with the serrated grid. By setting a rotary cleaning component that can jump up and down with the serrated grid, this solution can ensure that the rotary cleaning component remains in contact with the grid during the linear movement of the slag cleaning mechanism along the frame, while also scraping away the residual slag on the grid through rotation, thereby thoroughly and efficiently removing the residual slag on the grid. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a laser cutting machine provided in an embodiment of this application from one viewpoint; Figure 2 This is a schematic diagram of the slag cleaning mechanism in one view from an embodiment of this application; Figure 3 This is a cross-sectional view of the slag cleaning mechanism in an embodiment of this application from one perspective; Figure 4 This is a schematic diagram of the slag cleaning mechanism in this application embodiment when cleaning slag.

[0018] Explanation of the labels in the attached drawings: 100-Frame, 200-Grate, 300-Slag cleaning mechanism, 301-Rotary cleaning component, 302-Component support, 3010-Rotary shaft, 3011-Cleaning wheel, 3012-Rotary motor, 3013-Connecting arm, 3014-U-shaped lifting support, 3015-Guide roller, 3016-Inner wheel surface, 3017-Side wheel surface, 3020-Main support, 3021-Secondary support, 3022-First guide groove, 3023-Second guide groove, 3024-Smooth bushing, 3025-Threaded bushing, 400-Guide rail, 500-Screw shaft, 600-Linear drive motor. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0023] See attached document Figure 1 This application provides a laser cutting machine, including a frame 100, a grid 200, a cutting assembly, and a slag cleaning mechanism 300. Typically, the grid 200 is composed of several strips with serrated tips, and adjacent strips are equally spaced. The grid 200 is placed on the frame 100 to support the workpiece to be cut. The cutting assembly includes a cutting head and a three-axis linkage system for moving the cutting head along the X-axis, Y-axis, and Z-axis. The cutting head includes a nozzle, a focusing lens, and a tracking system, which are responsible for beam focusing and dynamic adjustment.

[0024] In this embodiment, the slag cleaning mechanism 300 moves linearly along the frame 100, and the direction of movement of the slag cleaning mechanism 300 is the same as the orientation of the grid 200. This ensures that the slag cleaning mechanism 300 cleans the grid 200 during linear movement. The slag cleaning mechanism 300 has a rotating cleaning component 301 capable of vertical movement. The rotating cleaning component 301 can move vertically along the Y-axis while maintaining rotation during vertical movement. The frame 100 is provided with an undulating guide rail 400 along the direction of movement of the slag cleaning mechanism 300. The rotating cleaning component 301 can move vertically along the undulation of the guide rail 400 during the linear movement of the slag cleaning mechanism 300 along the frame 100 to maintain contact with the serrated grid 200.

[0025] As a traditional laser cutting machine, it produces slag spatter during the cutting process. The slag easily scatters and accumulates on the grid 200, forming slag blocks or clumps. If it is not removed in time, it will affect the stability of the subsequent workpiece placement and thus affect the cutting accuracy. The traditional method of manual cleaning is time-consuming, labor-intensive, and has low slag removal efficiency.

[0026] In this embodiment, by providing a rotary cleaning component 301 that can undulate and bounce with the serrated tips of the grille 200, it is ensured that the slag cleaning mechanism 300 keeps the rotary cleaning component 301 in contact with the grille 200 during the linear movement along the frame 100. At the same time, it can scrape off the residual slag on the grille 200 by rotating, thereby removing the residual slag on the grille 200 more thoroughly and efficiently.

[0027] It is understandable that the laser cutting machine provided in the embodiments of this application does not list and describe all the traditional structures such as laser generator, beam transmission component, CNC system and cooling system, but those skilled in the art can understand them, so they will not be described in detail here.

[0028] Meanwhile, in this embodiment, the slag cleaning mechanism 300 is parked on one side of the frame 100 when not in use, and the overall height of the slag cleaning mechanism 300 is lower than the lowest position of the laser cutting head when not in use, thereby ensuring that the slag cleaning mechanism 300 does not collide with the laser cutting head during the slag removal process.

[0029] In a preferred embodiment, such as Figure 2 and Figure 3As shown, the rotary cleaning assembly 301 includes a rotating shaft 3010, cleaning wheels 3011, a rotary motor 3012, a U-shaped lifting bracket 3014, guide rollers 3015, and a connecting arm 3013. Specifically, the rotating shaft 3010 is arranged perpendicular to the moving direction of the slag cleaning mechanism 300. Several grooved cleaning wheels 3011 are fixedly mounted on the rotating shaft 3010. The number of cleaning wheels 3011 is the same as the number of strips constituting the grid 200, and each cleaning wheel 3011 straddles one of the strips (e.g.,...). Figure 4 As shown, adjacent cleaning wheels 3011 are spaced at equal intervals, with the distance between adjacent cleaning wheels 3011 equal to the gap between adjacent grids 200. Simultaneously, one end of the rotating shaft 3010 is connected to a rotary motor 3012 via a coupling. The rotation of the rotary motor 3012 drives the rotating shaft 3010 to rotate, causing all the cleaning wheels 3011 to rotate synchronously. Consequently, the cleaning wheels 3011, which are in contact with the grid 200, scrape away any residual slag on the grid 200 as they rotate.

[0030] Continue as Figure 2 and Figure 3 As shown, the U-shaped lifting bracket 3014 has wheel frames at both ends, and guide rollers 3015 that fit against the guide rail 400 are installed on the wheel frames. At least one connecting arm 3013 is provided between the two ends of the U-shaped lifting bracket 3014, and the end of the connecting arm 3013 is connected to the rotating shaft 3010 through a bearing mechanism. Figure 3 The image only shows a connecting arm 3013 set in the center of the U-shaped lifting bracket 3014. However, it can be imagined that in order to increase the stability of the rotating shaft 3010, a connecting arm 3013 can be set symmetrically in the center of the U-shaped lifting bracket 3014 and on both sides of the center. The three connecting arms 3013 can increase the stability of the rotating shaft 3010 during rotation.

[0031] In the above embodiments, it is easy to understand that by setting guide rollers 3015 at both ends of the U-shaped lifting bracket 3014 to fit against the undulating guide rail 400, when the slag cleaning mechanism 300 moves linearly along the frame 100, the U-shaped lifting bracket 3014 jumps up and down synchronously with the undulating guide rail 400, thereby adapting to the sawtooth-shaped structure of the grid 200. This ensures that the guide rollers 3015 can always fit against the grid 200 during the cleaning process. The rotation of the rotary motor 3012 can drive the rotary shaft 3010 to rotate, causing all the cleaning wheels 3011 to rotate synchronously with the rotary shaft 3010. As a result, the cleaning wheels 3011 that fit against the grid 200 scrape off the residual slag on the grid 200 under rotation, achieving a more thorough and efficient slag cleaning.

[0032] It should be noted that the bearing mechanism mentioned in the above embodiments includes a bushing and a bearing assembled in the bushing. The bushing is welded to the bottom of the connecting arm 3013, and the rotating shaft 3010 is assembled in the bearing. It is easy to imagine that the rotating shaft 3010 is connected to the connecting arm 3013 through the bearing mechanism. The connecting arm 3013 can drive the rotating shaft 3010 and its cleaning wheel 3011 to move up and down with the U-shaped lifting bracket 3014, and can also ensure that the rotating shaft 3010 carries the cleaning wheel 3011 to rotate.

[0033] In a preferred embodiment, to ensure that the rotary slag cleaning mechanism 300 moves synchronously up and down with the serrated tip structure of the grid 200 during its linear movement along the frame 100, such as... Figure 1 As shown, the guide rail 400 includes a wavy track surface with the same undulating shape as the sawtooth tip of the grille 200, and the guide roller 3015 remains in contact with the wavy track surface.

[0034] In the above embodiments, it can be imagined that by setting the track surface of the guide rail 400 to a wave-like shape with the same undulating form as the sawtooth tip of the grid 200, when the slag cleaning mechanism 300 moves linearly along the frame 100, the guide roller 3015 adheres to the track surface and undulates with the wave-like shape, thereby forming the same undulating change as the sawtooth tip of the grid 200. This ensures that the cleaning wheel 3011 can remain in contact with the grid 200 throughout the slag removal and cleaning process, thereby ensuring the success rate of slag removal and achieving effective slag removal.

[0035] In a preferred embodiment, to ensure the linearity of the vertical displacement of the rotary cleaning component 301, such as... Figure 2 and Figure 3As shown, the slag cleaning mechanism also includes a component support 302, which includes a main support 3020 and a secondary support 3021. Specifically: The main support 3020 is a solid cuboid material, and the main support 3020 is hollowed out from bottom to top. After the main support 3020 is hollowed out, a cavity structure is formed inside. The rotating shaft 3010 is placed horizontally in the cavity structure inside the main support 3020. The two ends of the main support 3020 are provided with first guide grooves 3022, which extend vertically. One end of the rotating shaft 3010 is located in the first guide groove 3022 on one side. The first guide groove 3022 guides and limits one end of the rotating shaft 3010, restricting it to vertical displacement. At the same time, the rotary motor 3012, which is connected to the other end of the rotating shaft 3010 through a coupling, is located in the first guide groove 3022 on the other side. The first guide groove 3022 on this side guides and limits the other end of the rotating shaft 3010, restricting it to vertical displacement. Furthermore, the connecting arm 3013 extends upward from the top of the main bracket 3020 and is integrally formed and fixedly connected with the secondary bracket 3021.

[0036] Meanwhile, in the above embodiment, the secondary support 3021 is a U-shaped frame, which is welded to the top side surface of the main support 3020. Similarly, the two ends of the secondary support 3021 are provided with second guide grooves 3023, which extend vertically. The two ends of the U-shaped lifting support 3014 extend from the second guide grooves 3023 and are limited and guided by the second guide grooves 3023, so that the U-shaped lifting support 3014 can only move up and down in the vertical direction.

[0037] As can be imagined, in the above embodiment, by setting a main support 3020 and a secondary support 3021, the second guide grooves 3023 at both ends of the secondary support 3021 guide and limit the vertical displacement of the U-shaped lifting support 3014, and the first guide grooves 3022 at both ends of the main support 3020 guide and limit the vertical displacement of the rotating shaft 3010, it can be seen that when the slag cleaning mechanism 300 moves linearly along the frame 100, the guide rollers 3015 move along the wavy guide track 400, thereby guiding the rollers... 3015 moves up and down due to the undulations of the track surface, thus driving the U-shaped lifting bracket 3014 to move. Because the U-shaped lifting bracket 3014 is guided and limited by the second guide groove 3023, it can only move up and down in a straight line in the vertical direction. In turn, it drives the rotating shaft 3010 to move up and down through the connecting arm 3013. Because the rotating shaft 3010 is limited by the first guide groove 3022, the rotating shaft 3010 and the rotating motor 3012 move up and down in a straight line in the vertical direction synchronously, thereby ensuring that the displacement of the rotating cleaning mechanism remains linear.

[0038] In the above, the wheel frame has a U-shaped structure, and a wheel axle is connected to the wheel frame through a bearing. The guide roller 3015 is fixedly mounted on the wheel axle, so that the guide roller 3015 is rotatably mounted on the wheel frame.

[0039] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the cleaning wheel 3011 has a grooved structure along its circumference, thus forming an inner wheel surface 3016 and a side wheel surface 3017. The inner wheel surface 3016 refers to the bottom surface of the groove structure where the cleaning wheel 3011 is located, and the side wheel surface 3017 refers to the side surface of the groove structure where the cleaning wheel 3011 is located. The inner wheel surface 3016 is in contact with the outer surface of the grille 200, and the side wheel surface 3017 is in contact with the outer vertical surface of the grille 200.

[0040] As can be imagined, during the splashing of molten slag, it is usually dispersed to the outer surface and outer facade of the grid 200 plate. It is understandable that the outer surface of the grid 200 refers to the surface facing the workpiece, and the outer facade of the grid 200 refers to the outer surface that is connected to both sides of the outer surface and is perpendicular to the workpiece side.

[0041] In the above embodiments, such as Figure 4 As shown, the cleaning wheel 3011 with a grooved structure uses its inner wheel surface 3016 and side wheel surface 3017 to hold the grid 200 in place, so that the cleaning wheel 3011 can fit against the outer surface and outer vertical surface of the grid 200. As the cleaning wheel 3011 rotates with the rotating shaft 3010, it will grind and scrape away the slag remaining on the grid 200, thereby achieving the slag removal effect.

[0042] In a preferred embodiment, in order to enable the slag cleaning mechanism 300 to move linearly along the frame 100, a linear drive mechanism for driving the slag cleaning mechanism 300 to move linearly is provided on the frame 100.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the linear drive mechanism includes a guide shaft, a lead screw shaft 500, and a linear drive motor 600. The inner walls of both sides of the frame 100 along its length are provided with side grooves, each containing a lead screw shaft 500 and a guide shaft. The guide shaft is fixedly welded to the frame 100, and the lead screw shaft 500 is rotatably connected to the frame 100 via bearings. One end of the lead screw shaft 500 extends outside the frame 100 and is connected to the linear drive motor 600 via a coupling. The linear drive motor 600 is fixed to the side of the frame 100 via a motor mounting base. In the slag cleaning mechanism 300, the outer surfaces of both ends of the main support 3020 are respectively provided with a smooth bushing 3024 connected to the guide shaft and a threaded bushing 3025 connected to the lead screw shaft 500.

[0044] As can be imagined, in the above embodiment, when the linear drive motor 600 is started, the lead screw shaft 500 rotates with the linear drive motor 600. Since the main bracket 3020 is threadedly connected to the lead screw shaft 500 and smoothly connected to the guide shaft, it is fixed to rotate with the forward and reverse rotation of the linear drive motor 600, so that the entire slag cleaning mechanism 300 can reciprocate linearly along the frame 100.

[0045] Based on the above, the laser cutting machine provided in this application provides a process for cleaning residual slag on the grid 200 as follows: The rotary motor 3012 is started, followed immediately by the linear drive motor 600. The linear drive motor 600 drives the lead screw shaft 500 to rotate, causing the main support 3020 to carry the entire slag cleaning mechanism 300 in a linear motion along the frame 100. During the linear motion of the slag cleaning mechanism 300 along the frame 100, the rotary cleaning component 301 contacts the guide rail 400 through the guide rollers 3015 set at both ends of the U-shaped lifting support 3014. Because the guide rail 400 has a... The serrated, pointed track surface of the grille 200 is undulating. At the same time, the rotating shaft 3010 and the U-shaped lifting bracket 3014 are limited and guided by the first guide groove 3022 and the second guide groove 3023, respectively. This causes the U-shaped lifting bracket 3014 to move up and down with the undulation of the guide track 400, and to move up and down synchronously with the cleaning wheel 3011, keeping it in close contact with the grille 200. Thus, the high-speed rotating cleaning wheel 3011 is used to grind and scrape off the residual slag on the grille 200, achieving the purpose of slag removal.

[0046] In summary, the laser cutting machine provided in this application includes a frame 100 and a grid 200 placed on the frame 100, and also includes a slag cleaning mechanism 300 that moves linearly along the frame 100. The slag cleaning mechanism 300 has a rotary cleaning component 301 capable of jumping up and down. The frame 100 is provided with an undulating guide rail 400 along the moving direction of the slag cleaning mechanism 300. The rotary cleaning component 301 is capable of moving linearly along the frame 100 of the slag cleaning mechanism 300. During the process, it bounces up and down with the undulation of the guide rail 400 to maintain contact with the serrated tip of the grille 200. This solution, by setting a rotary cleaning component 301 that can bounce up and down with the serrated tip of the grille 200, can ensure that the slag cleaning mechanism 300 keeps the rotary cleaning component 301 in contact with the grille 200 while moving linearly along the frame 100. At the same time, it can scrape off the residual slag on the grille 200 by rotating, thereby cleaning the residual slag on the grille 200 more thoroughly and efficiently.

[0047] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A laser cutting machine, comprising a frame and a grid placed on the frame, characterized in that, It also includes a slag cleaning mechanism that moves linearly along the frame. The slag cleaning mechanism has a rotary cleaning component that can jump up and down. The frame is provided with an undulating guide rail along the moving direction of the slag cleaning mechanism. The rotary cleaning component can jump up and down with the undulation of the guide rail as the slag cleaning mechanism moves linearly along the frame, so as to maintain contact with the serrated grid.

2. The laser cutting machine according to claim 1, characterized in that, The rotary cleaning assembly includes: A rotating shaft, on which a plurality of grooved cleaning wheels are arranged alternately, and one end of the rotating shaft is connected to a rotary motor via a coupling; The U-shaped lifting bracket has guide rollers at both ends that fit with the guide rail, and at least one connecting arm is provided between the two ends of the U-shaped lifting bracket. The end of the connecting arm is connected to the rotating shaft through a bearing mechanism.

3. The laser cutting machine according to claim 2, characterized in that, The guide rail includes a wavy track surface with the same undulating shape as the sawtooth tip of the grille, and the guide roller remains in contact with the wavy track surface.

4. The laser cutting machine according to claim 2, characterized in that, The slag cleaning mechanism further includes a component support, the component support comprising: The main support is a solid cuboid with a through-hole from bottom to top. The two ends of the main support are provided with first guide grooves. The rotating shaft is placed horizontally inside the main support, and one end of the rotating shaft is limited and guided by the first guide groove. The rotating motor is limited and guided by the other first guide groove. The connecting arm extends upward from the main support. The secondary support is a U-shaped frame with second guide grooves at both ends. The two ends of the U-shaped lifting support extend from the second guide grooves and are limited and guided by the second guide grooves.

5. The laser cutting machine according to claim 2, characterized in that, The U-shaped lifting bracket has wheel frames at both ends for mounting the guide rollers.

6. The laser cutting machine according to claim 2, characterized in that, The cleaning wheel has an inner wheel surface and a side wheel surface. The inner wheel surface is in contact with the outer surface of the grille, and the side wheel surface is in contact with the outer vertical surface of the grille.

7. The laser cutting machine according to claim 4, characterized in that, The frame is equipped with a linear drive mechanism for driving the slag cleaning mechanism to move linearly.

8. The laser cutting machine according to claim 7, characterized in that, The linear drive mechanism includes a guide shaft and a lead screw shaft arranged parallel to the frame. The slag cleaning mechanism is connected to the guide shaft and the lead screw shaft, and the lead screw shaft is connected to a linear drive motor via a coupling.

9. The laser cutting machine according to claim 8, characterized in that, The main support is provided with a smooth bushing connected to the optical rod shaft and a threaded bushing connected to the lead screw shaft at both ends.

10. The laser cutting machine according to claim 2, characterized in that, The distance between adjacent cleaning wheels is equal to the gap between adjacent grilles.

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