A laser cutting machine

Abstract

The application discloses a laser cutting machine, and relates to the technical field of cutting equipment, which comprises a rack, a grid placed on the rack and a slag cleaning mechanism moving linearly along the rack, wherein the slag cleaning mechanism is provided with a rotary cleaning assembly capable of jumping up and down; the rack is provided with a wavy guide rail along the moving direction of the slag cleaning mechanism; and the rotary cleaning assembly can jump up and down along with the wavy guide rail during the linear movement of the slag cleaning mechanism along the rack, so as to keep adhering to the grid with sawtooth tips. The rotary cleaning assembly can jump up and down along with the sawtooth tips of the grid, so that the rotary cleaning assembly can always adhere to the grid during the linear movement of the slag cleaning mechanism along the rack, and the slag remaining on the grid can be scraped off through rotation, so that the slag remaining on the grid can be thoroughly and efficiently removed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a laser cutting machine. BACKGROUND

[0002] The laser cutting machine irradiates the surface of the material with a high-power-density laser beam, causing it to melt, vaporize or burn rapidly, while blowing away the molten material with the help of auxiliary gas, thereby achieving precise cutting.

[0003] Laser cutting processing uses invisible light beams instead of traditional mechanical cutters, with the characteristics of high precision, fast cutting, no pattern cutting restrictions, automatic layout to save materials, smooth cutting, and low processing cost, which will gradually improve or replace traditional metal cutting equipment.

[0004] When the laser cutting machine is in use, the bottom of the operation table is often paved with a grid for supporting materials. The grid is a sawtooth-shaped vertical plate with sharp corners upward. During cutting work, the plate to be cut is placed on the grid frame, and the laser cutting head is driven to vertically ascend and descend relative to the rack, thereby achieving the cutting of the steel to meet the actual processing requirements.

[0005] However, the cutting device in the related art will splash a lot of molten slag around the cutting position of the steel when cutting the steel, and the molten slag is easy to adhere to the grid frame, making the plate placed on the grid frame less stable, affecting the cutting accuracy of the plate. Therefore, the staff needs to clean the grid frame regularly, which increases the labor intensity of the staff and affects the cutting efficiency of the steel. SUMMARY

[0006] In order to improve the phenomenon that the molten slag splashed around by the laser cutting machine in the prior art adheres to the grid frame during cutting, the staff needs to be arranged to clean it regularly, which increases the labor intensity of the staff and affects the workpiece cutting efficiency, the present application provides a laser cutting machine.

[0007] The technical solution adopted by the present application is as follows:

[0008] A laser cutting machine, comprising a rack and a grid placed on the rack, further comprising a molten slag cleaning mechanism moving linearly along the rack, the molten slag cleaning mechanism having a rotating cleaning assembly capable of jumping up and down, the rack being provided with a undulating guide rail along the moving direction of the molten slag cleaning mechanism, the rotating cleaning assembly being capable of jumping up and down with the undulation of the guide rail during the linear motion of the molten slag cleaning mechanism along the rack, so as to keep in close contact with the sawtooth-shaped grid.

[0009] Further, the rotating cleaning assembly comprises:

[0010] A rotating shaft is provided with a plurality of grooved cleaning wheels arranged alternately, and one end of the rotating shaft is connected with a rotating motor through a coupling;

[0011] A U-shaped lifting support is provided with guide rollers at both ends thereof, and at least one connecting arm is arranged between the two ends of the U-shaped lifting support, and the end of the connecting arm is connected with the rotating shaft through a bearing mechanism.

[0012] Further, the guide rail comprises a wavy track surface with the same undulating pattern as the sawtooth tips of the grid, and the guide rollers are kept in contact with the wavy track surface.

[0013] Further, the slag cleaning mechanism further comprises an assembly support, which comprises:

[0014] A main support is a square solid material, and is hollowed from the bottom to the top, and the two ends of the main support are provided with first guide grooves, the rotating shaft is horizontally arranged in the main support, and one end of the rotating shaft is guided by the first guide grooves, and the rotating motor is guided by the other first guide grooves, and the connecting arm extends upwardly out of the main support.

[0015] A sub-support is a U-shaped frame, and the two ends of the sub-support are provided with second guide grooves, and the two ends of the U-shaped lifting support extend out of the second guide grooves and are guided by the second guide grooves.

[0016] Further, the two ends of the U-shaped lifting support are provided with wheel frames for mounting the guide rollers.

[0017] Further, 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 grid, and the side wheel surface is in contact with the outer side surface of the grid.

[0018] Further, a linear driving mechanism is arranged on the rack for driving the slag cleaning mechanism to move linearly.

[0019] Further, the linear driving mechanism comprises a smooth rod shaft and a screw rod shaft arranged in parallel on the rack, the slag cleaning mechanism is connected with the smooth rod shaft and the screw rod shaft, and the screw rod shaft is connected with a linear driving motor through a coupling.

[0020] Further, the two ends of the main support are respectively provided with a smooth sleeve connected with the smooth rod shaft and a threaded sleeve connected with the screw rod shaft.

[0021] Further, the distance between adjacent cleaning wheels is equal to the gap between adjacent grids.

[0022] Compared with the prior art, the application has the beneficial effects that:

[0023] The laser cutting machine provided by the embodiment of the application comprises a rack and a grid placed on the rack, further comprises a molten slag cleaning mechanism moving linearly along the rack, the molten slag cleaning mechanism has a rotating cleaning assembly capable of jumping up and down, the rack is provided with a wavy guide rail along the moving direction of the molten slag cleaning mechanism, and the rotating cleaning assembly can jump up and down along with the wavy guide rail during the linear movement of the molten slag cleaning mechanism along the rack, so as to keep in close contact with the grid with sawtooth tips. The rotating cleaning assembly can jump up and down along with the sawtooth tips of the grid, so that the rotating cleaning assembly can keep in close contact with the grid during the linear movement of the molten slag cleaning mechanism along the rack, and the residual molten slag on the grid can be scraped off by the rotating cleaning assembly, so that the residual molten slag on the grid can be cleaned more completely and efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure schematic view of the laser cutting machine provided by the embodiment of the application in one view;

[0025] Figure 2 The structure schematic view of the molten slag cleaning mechanism in the embodiment of the application in one view;

[0026] Figure 3 The sectional view of the molten slag cleaning mechanism in the embodiment of the application in one view;

[0027] Figure 4 The state schematic view of the molten slag cleaning mechanism in the embodiment of the application when cleaning molten slag.

[0028] REFERENCE SIGNS IN DRAWINGS:

[0029] 100-rack, 200-grid, 300-molten slag cleaning mechanism, 301-rotating cleaning assembly, 302-assembly support, 3010-rotating shaft, 3011-cleaning wheel, 3012-rotating motor, 3013-connecting arm, 3014-U-shaped lifting support, 3015-guide roller, 3016-inner wheel surface, 3017-lateral wheel surface, 3020-main support, 3021-secondary support, 3022-first guide groove, 3023-second guide groove, 3024-smooth shaft sleeve, 3025-threaded shaft sleeve, 400-guide rail, 500-screw rod shaft, 600-linear drive motor. DETAILED DESCRIPTION

[0030] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0031] It should be noted that all the direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, if the present application has a description of “first”, “second” and the like, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. For example, “A and / or B” includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0034] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application. Figure 1The embodiment of the present application provides a laser cutting machine, which comprises a rack 100, a grid 200, a cutting assembly and a slag cleaning mechanism 300. Generally, the grid 200 is composed of a plurality of strip bodies with sawtooth tips, and the adjacent strip bodies are arranged at equal intervals. The grid 200 is placed on the rack 100 for carrying and supporting a workpiece to be cut. The cutting assembly comprises a cutting head and a three-axis combined transport system for realizing the movement of the cutting head along the X-axis, Y-axis and Z-axis directions. The cutting head comprises a nozzle, a focusing lens and a tracking system, which is responsible for beam focusing and dynamic adjustment.

[0035] In the embodiment, the slag cleaning mechanism 300 moves linearly along the rack 100, and the moving direction of the slag cleaning mechanism 300 is the same as the placing direction of the grid 200, so that the slag cleaning mechanism 300 can clean the slag of the grid 200 during the linear movement. The slag cleaning mechanism 300 has a rotary cleaning assembly 301 capable of jumping up and down. The rotary cleaning assembly 301 can move up and down along the Y-axis direction and can rotate during the up-and-down movement. The rack 100 is provided with a wavy guide rail 400 along the moving direction of the slag cleaning mechanism 300. The rotary cleaning assembly 301 can jump up and down along with the wavy guide rail 400 during the linear movement of the slag cleaning mechanism 300 along the rack 100, so as to be attached to the sawtooth grid 200.

[0036] As a traditional laser cutting machine, it will produce splashing slag during cutting. The slag is easy to fall on the grid 200 and form slag blocks or slag groups. If it is not removed in time, it will affect the stability of subsequent workpiece placement and further affect the cutting precision. The traditional manual cleaning method is time-consuming and laborious, and the slag removal efficiency is low.

[0037] In the embodiment, by arranging the rotary cleaning assembly 301 capable of jumping up and down along the sawtooth of the grid 200, the rotary cleaning assembly 301 can be attached to the grid 200 during the linear movement of the slag cleaning mechanism 300 along the rack 100, and the residual slag on the grid 200 can be scraped off by rotating, so that the residual slag on the grid 200 can be removed more thoroughly and efficiently.

[0038] Of course, it can be understood that the laser cutting machine provided by the embodiment of the present application does not enumerate all the structures such as laser generator, beam transmission assembly, numerical control system and cooling system, but those skilled in the art can know that they are not described here.

[0039] Meanwhile, in the embodiment, the slag cleaning mechanism 300 is parked at 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, so as to ensure that the slag cleaning mechanism 300 does not collide with the laser cutting head during slag removal.

[0040] In a preferred embodiment, as shown in Figure 2 and Figure 3 , the rotating cleaning assembly 301 includes a rotating shaft 3010, a cleaning wheel 3011, a rotating motor 3012, a U-shaped lifting support 3014, a guide roller 3015, and a connecting arm 3013. Specifically, the rotating shaft 3010 is arranged perpendicular to the moving direction of the slag cleaning mechanism 300, and a plurality of grooved cleaning wheels 3011 are fixedly arranged on the rotating shaft 3010. The number of the cleaning wheels 3011 is the same as the number of the strip-shaped bodies constituting the grid 200, and each cleaning wheel 3011 is correspondingly mounted on a strip-shaped body (as shown in Figure 4 ). The adjacent cleaning wheels 3011 are arranged at equal intervals, and the distance between the adjacent cleaning wheels 3011 is equal to the gap between the adjacent grids 200. Meanwhile, the rotating motor 3012 is connected to one end of the rotating shaft 3010 through a coupling. The rotating motor 3012 is rotated to drive the rotating shaft 3010 to rotate, so that all the cleaning wheels 3011 are synchronously rotated, and the cleaning wheels 3011 adhering to the grid 200 are scraped to remove the residual slag on the grid 200.

[0041] Continuing as shown in Figure 2 and Figure 3 , the U-shaped lifting support 3014 is provided with a wheel frame at both ends, and the guide roller 3015 is mounted on the wheel frame to adhere to the guide rail 400. At least one connecting arm 3013 is arranged between the two ends of the U-shaped lifting support 3014, and the end of the connecting arm 3013 is connected to the rotating shaft 3010 through a bearing mechanism. Of course, Figure 3 only one connecting arm 3013 is shown arranged at the center of the U-shaped lifting support 3014, but it can be imagined that one connecting arm 3013 can be arranged at the center and symmetrically arranged at both sides of the center of the U-shaped lifting support 3014 to increase the stability of the rotating shaft 3010. Three connecting arms 3013 can increase the stability of the rotating shaft 3010 during rotation.

[0042] In the above embodiment, it is not difficult to understand that by arranging the guide rollers 3015 on both ends of the U-shaped lifting bracket 3014 to match the up-and-down changing guide rail 400, when the slag cleaning mechanism 300 moves linearly along the rack 100, the U-shaped lifting bracket 3014 jumps up and down synchronously with the up-and-down change of the guide rail 400, and then adapts to the sawtooth pointed structure of the grid 200, so that the guide rollers 3015 can always match the grid 200 during the cleaning process, and the rotation of the rotating motor 3012 can drive the rotating shaft 3010 to rotate, so that all the cleaning wheels 3011 rotate synchronously with the rotating shaft 3010, and then the cleaning wheels 3011 matching the grid 200 are scraped off the residual slag on the grid 200, realizing more thorough and efficient slag cleaning.

[0043] It should be noted that the bearing mechanism mentioned in the above embodiment includes a shaft sleeve and a bearing assembled in the shaft sleeve, wherein the shaft sleeve is welded to the bottom of the connecting arm 3013, and the rotating shaft 3010 is assembled in the bearing, so that the rotating shaft 3010 is connected with the connecting arm 3013 through the bearing mechanism, and the connecting arm 3013 can drive the rotating shaft 3010 and the cleaning wheels 3011 to move up and down with the U-shaped lifting bracket 3014, and also can ensure that the rotating shaft 3010 and the cleaning wheels 3011 rotate.

[0044] In a more preferred embodiment, in order to realize that the rotating slag cleaning mechanism 300 can move up and down synchronously with the sawtooth pointed structure of the grid 200 during the linear movement of the slag cleaning mechanism 300 along the rack 100, as shown in Figure 1 The guide rail 400 includes a wave-shaped rail surface with the same up-and-down shape as the sawtooth pointed structure of the grid 200, and the guide rollers 3015 match the wave-shaped rail surface.

[0045] In the above embodiment, it can be imagined that by arranging the rail surface of the guide rail 400 to be wave-shaped with the same up-and-down shape as the sawtooth pointed structure of the grid 200, when the slag cleaning mechanism 300 moves linearly along the rack 100, the guide rollers 3015 match the wave-shaped rail surface and move up and down with the wave shape, so as to form the same up-and-down change as the sawtooth pointed structure of the grid 200, and then ensure that the cleaning wheels 3011 can match the grid 200 during the entire slag cleaning process, thereby ensuring the success rate of slag removal and realizing effective slag removal.

[0046] In a more preferred embodiment, in order to ensure the linearity of the up-and-down displacement of the rotating cleaning assembly 301, as shown in Figure 2 and Figure 3As shown, the slag cleaning mechanism further comprises an assembly support 302, which comprises a main support 3020 and a secondary support 3021. Specifically: the main support 3020 is a square solid material, and the main support 3020 is hollow from the bottom to the top, and the main support 3020 forms a cavity structure inside after being hollowed, the rotating shaft 3010 is transversely arranged in the cavity structure inside the main support 3020, and the two ends of the main support 3020 are provided with first guide grooves 3022 which are opened and extended in the vertical direction, wherein one end of the rotating shaft 3010 is located in the first guide groove 3022 on one side, and the first guide groove 3022 guides and limits one end of the rotating shaft 3010, which can only move up and down in the vertical direction, and the rotating motor 3012 connected to the other end of the rotating shaft 3010 is located in the first guide groove 3022 on the other side, which guides and limits the other end of the rotating shaft 3010 through the first guide groove 3022 on the side, which can only move up and down in the vertical direction. And also, the connecting arm 3013 extends upward from the top of the main support 3020 and is integrally connected with the secondary support 3021.

[0047] Meanwhile, in the above embodiment, the secondary support 3021 is a U-shaped bracket, the secondary support 3021 is welded to the top side surface of the main support 3020, and the two ends of the secondary support 3021 are provided with second guide grooves 3023 which are opened and extended in the vertical direction, and the two ends of the U-shaped lifting bracket 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 bracket 3014 can only move up and down in the vertical direction.

[0048] As can be imagined, in the above embodiment, by providing the main support 3020 and the secondary support 3021, the up and down displacement of the U-shaped lifting bracket 3014 is guided and limited by the second guide grooves 3023 opened at the two ends of the secondary support 3021, and the up and down displacement of the rotating shaft 3010 is guided and limited by the first guide grooves 3022 opened at the two ends of the main support 3020. It can be found that when the slag cleaning mechanism 300 moves linearly along the rack 100, the guide roller 3015 moves along the wave-shaped guide rail 400, and then the guide roller 3015 moves up and down due to the ups and downs of the track surface, thereby driving the U-shaped lifting bracket 3014 to move. Since the U-shaped lifting bracket 3014 is guided and limited by the second guide grooves 3023, the U-shaped lifting bracket 3014 can only move up and down in the vertical direction, and then the connecting arm 3013 drives the rotating shaft 3010 to move up and down. Since the rotating shaft 3010 is limited by the first guide grooves 3022, the rotating shaft 3010 and the rotating motor 3012 move up and down in the vertical direction synchronously, thereby ensuring that the displacement of the rotating cleaning mechanism remains linear.

[0049] In the above, the wheel frame is a U-shaped structure, a wheel shaft is arranged in the wheel frame and connected to the wheel frame through a bearing, and the guide roller 3015 is fixedly arranged on the wheel shaft, so that the guide roller 3015 is rotatably arranged on the wheel frame.

[0050] In a preferred embodiment, as shown in Figure 3 and Figure 4 , the cleaning wheel 3011 is provided with a groove structure along the circumference of the wheel, and the cleaning wheel 3011 is formed with an inner wheel surface 3016 and a side wheel surface 3017, wherein the inner wheel surface 3016 refers to the groove bottom surface of the groove structure where the cleaning wheel 3011 is located, and the side wheel surface 3017 refers to the groove 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 grid 200, and the side wheel surface 3017 is in contact with the outer side surface of the grid 200.

[0051] As can be imagined, during the splashing of the slag, the slag is usually scattered to the outer surface and the outer side surface of the grid 200. It can be understood that the outer surface of the grid 200 refers to the surface facing the workpiece side, and the outer side surface of the grid 200 refers to the outer side surface connected to both sides of the outer surface and perpendicular to the workpiece side.

[0052] In the above embodiment, as shown in Figure 4 , the cleaning wheel 3011 with a groove structure is used to clamp the grid 200 by using the inner wheel surface 3016 and the side wheel surface 3017 of the cleaning wheel 3011, so that the cleaning wheel 3011 can be in contact with the outer surface and the outer side surface of the grid 200. Therefore, when the cleaning wheel 3011 rotates with the rotating shaft 3010, the cleaning wheel 3011 can polish and remove the slag remaining on the grid 200, thereby achieving the slag removal effect.

[0053] In a preferred embodiment, in order to realize the linear movement of the slag cleaning mechanism 300 along the rack 100, a linear driving mechanism for driving the linear movement of the slag cleaning mechanism 300 is arranged on the rack 100.

[0054] Specifically, as shown in Figure 1 and Figure 2 , the linear driving mechanism includes a light rod shaft, a screw shaft 500 and a linear driving motor 600. The two side walls of the rack 100 in the length direction are provided with side grooves, and the screw shaft 500 and the light rod shaft are respectively arranged in each side groove. The light rod shaft is fixedly welded to the rack 100, and the screw shaft 500 is rotatably connected to the rack 100 through a bearing. One end of the screw shaft 500 extends out of the rack 100 and is drivingly connected to the linear driving motor 600 through a coupling, and the linear driving motor 600 is fixed to the side surface of the rack 100 through a motor mounting seat. In the slag cleaning mechanism 300, the outer side surface of the two ends of the main support 3020 is respectively provided with a smooth shaft sleeve 3024 connected to the light rod shaft and a threaded shaft sleeve 3025 connected to the screw shaft 500.

[0055] It can be imagined that in the above embodiment, when the linear drive motor 600 is started, the screw shaft 500 rotates with the linear drive motor 600, and since the main support 3020 is threadedly connected with the screw shaft 500 and is smoothly connected with the polished rod shaft, it is fixed to rotate with the linear drive motor 600, thereby realizing the reciprocating linear motion of the entire slag cleaning mechanism 300 along the rack 100.

[0056] Based on the above, the laser cutting machine provided by the embodiment of the application has the following slag cleaning process on the residual slag on the grid 200:

[0057] The rotary motor 3012 is started, and then the linear drive motor 600 is started, the linear drive motor 600 drives the screw shaft 500 to rotate, so that the main support 3020 carries the entire slag cleaning mechanism 300 to move linearly along the rack 100, in the process of linear motion of the slag cleaning mechanism 300 along the rack 100, the rotary cleaning assembly 301 is in contact with the guide rail 400 through the guide rollers 3015 arranged at both ends of the U-shaped lifting support 3014, since the guide rail 400 has the same undulating track surface as the sawtooth-shaped grid 200, and the rotary shaft 3010 and the U-shaped lifting support 3014 are respectively limited and guided by the first guide groove 3022 and the second guide groove 3023, the U-shaped lifting support 3014 moves up and down with the undulation of the guide rail 400, and the cleaning wheel 3011 moves up and down synchronously, and keeps in contact with the grid 200, so that the residual slag on the grid 200 is polished and scraped by the high-speed rotating cleaning wheel 3011, thereby achieving the purpose of slag removal.

[0058] In summary, the laser cutting machine provided by the embodiment of the application comprises a rack 100 and a grid 200 placed on the rack 100, and further comprises a slag cleaning mechanism 300 moving linearly along the rack 100, the slag cleaning mechanism 300 has a rotary cleaning assembly 301 capable of jumping up and down, the rack 100 is provided with an undulating guide rail 400 along the moving direction of the slag cleaning mechanism 300, and the rotary cleaning assembly 301 can jump up and down with the undulation of the guide rail 400 in the process of linear motion of the slag cleaning mechanism 300 along the rack 100, so as to keep in contact with the sawtooth-shaped grid 200, the scheme can ensure that the rotary cleaning assembly 301 keeps in contact with the grid 200 in the process of linear motion of the slag cleaning mechanism 300 along the rack 100, and can also scrape the residual slag on the grid 200 by rotation, thereby more completely and efficiently removing the residual slag on the grid 200.

[0059] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present 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 capable of jumping up and down. The frame is provided with undulating guide rails along the direction of movement of the slag cleaning mechanism. The rotary cleaning component can jump up and down with the undulations of the guide rails as the slag cleaning mechanism moves linearly along the frame to maintain contact with the serrated grid. 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 against 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. The guide track includes a wavy track surface with the same undulating shape as the sawtooth tips of the grille, and the guide roller remains in contact with the wavy track surface; 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. The U-shaped lifting bracket has wheel frames at both ends for mounting the guide rollers; 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.

2. The laser cutting machine according to claim 1, characterized in that, The frame is equipped with a linear drive mechanism for driving the slag cleaning mechanism to move linearly.

3. The laser cutting machine according to claim 2, 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.

4. The laser cutting machine according to claim 3, 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.

5. The laser cutting machine according to claim 1, characterized in that, The distance between adjacent cleaning wheels is equal to the gap between adjacent grilles.

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