A slag removing mechanism for a laser cutting machine and a laser cutting machine

Abstract

The application relates to the technical field of cutting equipment, in particular to a slag removing mechanism for a laser cutting machine and the laser cutting machine, which is used for removing slag from a plurality of sawtooth plates arranged in an array mode and comprises a translation frame, a lifting frame, a rotating shaft, a plurality of cleaning wheels and a height locking structure. The slag removing mechanism is matched with the translation frame, the lifting frame and the height locking structure. In a daily cleaning mode, the lifting frame keeps a fixed height and synchronously translates with the translation frame, only performs the slag removing operation on the tooth tips of the sawtooth plates, the overall moving path is short, a small amount of slag adhered to the tooth tips of the sawtooth plates can be quickly removed, and the equipment downtime is greatly shortened. In a regular cleaning mode, the lifting frame synchronously translates with the translation frame and undulates along the tooth profile of the sawtooth plates, can perform all-around covering slag removing on the upper surface and the side surface of the sawtooth plates, and ensures that the slag is completely removed.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, specifically to a slag removal mechanism for a laser cutting machine and a laser cutting machine. Background Technology

[0002] In practical applications, laser cutting machines typically have an array of serrated plates on their frame. These serrated plates not only support the workpiece but also prevent the worktable from being directly ablated by the laser, and guide the discharge of molten slag generated during cutting. However, the high-temperature molten slag produced during laser cutting easily adheres to critical areas such as the tips, upper surface, and sides of the serrated plates. If the slag accumulates for a long time without being cleaned in time, it will not only cause uneven placement of subsequent workpieces but also block the gaps between the serrated plates, resulting in obstructed slag discharge channels.

[0003] A search revealed Chinese patent CN120862054B, which discloses a laser cutting machine. The cleaning wheel in this technical solution can undulate along the serrated contour of the saw blade, and through the rotating scraping action of the cleaning wheel, the residual slag on the upper and side surfaces of the saw blade can be thoroughly removed.

[0004] However, the aforementioned technical solution relies entirely on the cleaning wheel undulating along the contour of the serrated plate, resulting in a long overall movement path as the cleaning wheel's motion path perfectly matches the tooth profile of the serrated plate. This leads to a prolonged slag removal operation. In typical laser cutting machine applications, only a small amount of molten slag adhering to the serrated plate tips is usually needed to ensure the workpiece is placed flat. Using the aforementioned undulating slag removal method would cause significant downtime for the laser cutting machine, making it difficult to meet the demand for rapid slag removal in daily use. Therefore, we propose a slag removal mechanism and laser cutting machine specifically designed to effectively address these shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a slag removal mechanism for a laser cutting machine and a laser cutting machine, so as to solve the problem that the prior art mentioned in the background art cannot meet the daily rapid slag removal requirements.

[0006] This invention is achieved through the following technical solution: a slag removal mechanism for a laser cutting machine, used for slag removal from a plurality of sawtooth plates arranged in an array, comprising:

[0007] The translation frame can move along the length of the serrated plate;

[0008] The lifting frame is slidably connected to the translation frame in the vertical direction and can undulate with the toothed contour of the sawtooth plate;

[0009] The rotating shaft is rotatably connected to the lifting frame and can rotate around its own axis;

[0010] Several cleaning wheels correspond one-to-one with several toothed plates and are arranged at intervals on the rotating shaft; several brushes and several scrapers are alternately arranged circumferentially on the surface of each cleaning wheel, and the brushes or scrapers can extend and retract radially along the cleaning wheel.

[0011] A height locking structure is installed between the lifting frame and the translation frame to lock the vertical height of the lifting frame relative to the translation frame;

[0012] When the height locking structure is locked, the lifting frame maintains a fixed height and moves synchronously with the translation frame; at this time, the brush is in the extended state or the scraper is in the retracted state, so that the working surface of the brush protrudes from the working surface of the scraper to perform slag removal operation on the tooth tip of the saw blade.

[0013] When the height locking structure is in the unlocked state, the lifting frame moves synchronously with the translation frame and undulates with the tooth profile of the saw blade; at this time, the brush is in the retracted state or the scraper is in the extended state, so that the working surface of the scraper protrudes from the working surface of the brush, so as to perform slag removal operation on the upper surface and side of the saw blade.

[0014] In one embodiment, a drive source is installed on the outer periphery of the lifting frame, and the output end of the drive source is connected to the rotating shaft for driving the rotating shaft to rotate around its own axis.

[0015] In one embodiment, an annular groove is formed on the surface of the cleaning wheel, and the scraper is detachably fixed in the annular groove.

[0016] In one embodiment, the scraper has a first working part and two second working parts perpendicular to the first working part; the first working part is connected to the bottom wall of the annular groove and is used to remove slag from the upper surface of the saw blade; the second working parts are connected to the side wall of the annular groove and are used to remove slag from the side surface of the saw blade.

[0017] In one embodiment, the surface of the cleaning wheel is provided with grooves that are adapted to each brush, and a telescopic structure corresponding to each brush is provided inside the cleaning wheel. The telescopic structure is used to drive the corresponding brush to extend out of the groove or retract into the groove.

[0018] In one embodiment, the telescopic structure includes a connecting rod extending radially along the cleaning wheel, one end of which extends into a groove and is detachably fixedly connected to the brush; a piston is fixed at the end of the connecting rod away from the brush, and a cavity for the piston to slide in is provided inside the cleaning wheel, with a return spring sleeved on the connecting rod inside the cavity; the return spring is always in a compressed state and is used to apply a spring force to the piston away from the groove.

[0019] In one embodiment, the rotating shaft has an air passage communicating with the cavity, and the air inlet of the air passage is equipped with a valve.

[0020] In one embodiment, the connecting rod has a polygonal cross-section, and a polygonal opening adapted to the connecting rod is provided on the cleaning wheel.

[0021] In one embodiment, the height locking structure includes a plurality of threaded rods that are fixed parallel to and spaced apart to the top of the lifting frame. Each threaded rod moves vertically through the translation frame, and a locking nut is threadedly connected to the upper end of each threaded rod.

[0022] The present invention also provides a laser cutting machine, including the slag removal mechanism for laser cutting as described above, and a frame, wherein each serrated plate is arranged in an array on the frame; a linear drive mechanism is provided between the frame and the translation frame, the linear drive mechanism being used to drive the translation frame to move along the length direction of the serrated plate; an undulating mechanism is provided between the frame and the lifting frame, the undulating mechanism being used to drive the lifting frame to undulate synchronously with the tooth profile of the serrated plate.

[0023] Compared with the prior art, the present invention provides a slag removal mechanism for a laser cutting machine and a laser cutting machine, which has the following beneficial effects:

[0024] 1. The slag removal mechanism of this invention, through the cooperation of a translation frame, a lifting frame, and a height locking structure, allows for slag removal only on the tips of the sawtooth plates in routine cleaning mode. The lifting frame maintains a fixed height and moves synchronously with the translation frame, resulting in a shorter overall movement path and rapid removal of small amounts of molten slag adhering to the sawtooth tips, significantly reducing equipment downtime. In periodic cleaning mode, the lifting frame moves synchronously with the translation frame and undulates with the tooth profile of the sawtooth plates, providing comprehensive slag removal coverage to the upper and side surfaces of the sawtooth plates, ensuring thorough slag removal.

[0025] 2. The slag removal mechanism of the present invention, through the cooperation of brush and scraper, can efficiently remove molten slag adhering to the surface of the tooth tip by utilizing the flexible characteristics of the brush in daily cleaning mode, which can closely conform to the contour shape of the tooth tip; and in periodic cleaning mode, the rigid characteristics of the scraper can powerfully scrape off stubborn molten slag adhering to the upper surface and sides of the tooth plate.

[0026] 3. The laser cutting machine of the present invention can quickly clean the molten slag at the tip of the saw teeth during daily use through the above-mentioned slag removal mechanism; after long-term use, the molten slag on the saw teeth plate can be completely removed through regular deep cleaning, thus meeting the daily high-frequency use and long-term stable operation requirements of the laser cutting machine. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the slag removal mechanism of the present invention;

[0028] Figure 2 for Figure 1 A diagram from another perspective;

[0029] Figure 3 This is a schematic diagram of the cleaning wheel of the present invention;

[0030] Figure 4 This is a cross-sectional view of the cleaning wheel of the present invention;

[0031] Figure 5 This is a schematic diagram illustrating the direction of movement of the cleaning wheel in the daily cleaning mode of the present invention;

[0032] Figure 6 This is a schematic diagram illustrating the direction of movement of the cleaning wheel in the periodic cleaning mode of the present invention;

[0033] Figure 7 This is a top view of the laser cutting machine of the present invention;

[0034] Figure 8 This is a schematic diagram of the undulation mechanism of the present invention;

[0035] In the diagram: 1. Serrated blade; 2. Translation frame; 3. Lifting frame; 4. Rotating shaft; 5. Cleaning wheel; 6. Brush; 7. Scraper; 8. Height locking structure; 801. Threaded rod; 802. Locking nut; 9. Drive source; 10. Annular groove; 11. Groove; 12. Telescopic structure; 121. Connecting rod; 122. Piston; 123. Return spring; 13. Cavity; 14. Air passage; 15. Frame; 16. Guide roller; 17. Guide rail. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1 to 6 A slag removal mechanism for a laser cutting machine is used to remove slag from a plurality of serrated plates 1 arranged in an array, comprising: a translation frame 2, a lifting frame 3, a rotating shaft 4, a plurality of cleaning wheels 5, and a height locking structure 8.

[0038] Specifically, the translation frame 2 can move along the length of the serrated plate 1. As the moving carrier of the slag removal mechanism, it can drive the lifting frame 3, the rotating shaft 4, and the cleaning wheel 5 to move synchronously along the length of the serrated plate 1. The lifting frame 3 is slidably connected to the translation frame 2 in the vertical direction and can undulate with the toothed contour of the serrated plate 1, thereby driving the cleaning wheel 5 to conform to the uneven surface of the serrated plate 1, achieving thorough cleaning. The rotating shaft 4 is rotatably connected to the lifting frame 3 through the cooperation of bearings and bearing seats, and can rotate around its own axis. During the rotation, it can drive the cleaning wheel 5 to rotate synchronously. The working parts on the cleaning wheel 5 achieve rotational scraping to remove slag, improving cleaning efficiency.

[0039] In addition, several cleaning wheels 5 correspond one-to-one with several toothed plates 1 and are arranged at intervals on the rotating shaft 4, ensuring that each toothed plate 1 can be equipped with an independent cleaning wheel 5 for cleaning. Several brushes 6 and several scrapers 7 are alternately arranged circumferentially on the surface of each cleaning wheel 5. The brushes 6 or scrapers 7 can extend and retract radially along the cleaning wheel 5. By switching the extension and retraction states, the functions of different cleaning modes can be adapted.

[0040] It should be added that the brush 6 can be a flexible steel wire brush, whose bristles have good elastic deformation ability and can closely conform to the curved contour of the tooth tip of the saw blade 1, effectively removing the slag adhering to the tooth tip surface. The scraper 7 can be made of hard alloy material, which can powerfully scrape off the stubborn slag adhering to the upper surface and sides of the saw blade 1.

[0041] In this embodiment, a height locking structure 8 is disposed between the lifting frame 3 and the translation frame 2 to lock the vertical height of the lifting frame 3 relative to the translation frame 2. In the locked state, the degree of freedom of the lifting frame 3 is restricted, and it can only move synchronously with the translation frame 2, but cannot rise and fall in the vertical direction.

[0042] When the height locking structure 8 is locked, the lifting frame 3 maintains a fixed height and moves synchronously with the translation frame 2; at this time, the brush 6 is in an extended state or the scraper 7 is in a retracted state, so that the working surface of the brush 6 protrudes from the working surface of the scraper 7, so as to perform slag removal operation on the tooth tip of the serrated plate 1.

[0043] When the height locking structure 8 is in the unlocked state, the lifting frame 3 moves synchronously with the translation frame 2 and undulates with the tooth profile of the sawtooth plate 1; at this time, the brush 6 is in the retracted state or the scraper 7 is in the extended state, so that the working surface of the scraper 7 protrudes from the working surface of the brush 6, so as to perform slag removal operation on the upper surface and side of the sawtooth plate 1.

[0044] Using the above structure, in the daily cleaning mode, the lifting frame 3 is fixed to a preset height by the height locking structure 8, preventing the lifting frame 3 from undulating with the contour of the serrated plate 1. At this time, the translation frame 2 moves along the length of the serrated plate 1, which drives the lifting frame 3 and the cleaning wheel 5 to move synchronously in the horizontal direction. Simultaneously, the drive source 9 drives the rotating shaft 4 to rotate, thereby driving the cleaning wheel 5 to rotate synchronously. Since the working surface of the brush 6 protrudes from the working surface of the scraper 7, the cleaning wheel 5 only contacts the tooth tip with the brush 6 during rotation, thus enabling the brush 6 to perform a rapid slag removal operation on the tooth tip of the serrated plate 1, efficiently removing the molten slag on the tooth tip, making it easier to place the workpiece flat on the serrated plate 1 afterwards. In this mode, the overall movement path of the slag removal mechanism is a horizontal straight line, the path is short, and the single cleaning time is short, which is suitable for high-frequency daily rapid cleaning needs, and can greatly reduce the unnecessary downtime of the laser cutting machine and improve the effective operating rate of the equipment.

[0045] In the periodic cleaning mode, after prolonged use of the laser cutting machine, stubborn slag can easily accumulate on the grooves and sides of the serrated plate 1. At this time, it is necessary to switch to the deep cleaning mode, unlock the height locking structure 8, and restore the vertical freedom of the lifting frame 3. When the translation frame 2 moves along the length of the serrated plate 1, the lifting frame 3 can synchronously undulate with the tooth profile of the serrated plate 1, thereby driving the cleaning wheel 5 to always adhere to the upper surface and sides of the serrated plate 1. At this time, the working surface of the scraper 7 protrudes from the brush 6, allowing for comprehensive scraping of the upper surface and sides of the serrated plate 1, ensuring thorough slag removal. In this mode, the movement path of the slag removal mechanism is a wave-shaped path matching the tooth profile of the serrated plate. The path is relatively long, and each cleaning session takes relatively more time. It is suitable for periodic deep cleaning scenarios and can achieve full-area cleaning of all parts of the serrated plate.

[0046] The above design enables on-demand switching between "daily quick cleaning" and "periodic deep cleaning": in daily mode, the cleaning process is streamlined without constant movement, significantly reducing cleaning time and minimizing equipment downtime; in periodic mode, thorough cleaning is achieved, ensuring the long-term performance of the saw blade 1. Furthermore, both modes share a single mechanism, eliminating the need for additional cleaning components, simplifying the overall structure and reducing manufacturing and maintenance costs.

[0047] It should be noted that a drive source 9 (such as a geared motor) is installed on the outer periphery of the lifting frame 3. The output end of the drive source 9 is connected to the rotating shaft 4 for transmission, and is used to drive the rotating shaft 4 to rotate around its own axis, providing continuous power for the rotation and scraping of the cleaning wheel 5.

[0048] It is worth mentioning that the cleaning wheel 5 has an annular groove 10 on its surface, and the scraper 7 is detachably fixed in the annular groove 10 by bolts. When the scraper 7 becomes worn or deformed due to long-term scraping, the bolts can be removed directly to replace the scraper 7, without having to replace the entire cleaning wheel 5, effectively reducing the maintenance cost of the equipment.

[0049] In this embodiment, the scraper 7 adopts an integrated structural design, which has a first working part and two second working parts perpendicular to the first working part, forming an overall "U" shape. The first working part is connected to the bottom wall of the annular groove 10, and its working surface is parallel to the upper surface of the sawtooth plate 1, used to remove slag from the upper surface of the sawtooth plate 1. The second working parts are connected to the side wall of the annular groove 10, and their working surface is parallel to the side surface of the sawtooth plate 1, used to remove slag from the side surface of the sawtooth plate 1. The ends of the second working parts are chamfered to form a smooth transition, preventing sharp ends from scratching the side of the sawtooth plate 1, and avoiding jamming during the cleaning process.

[0050] In this embodiment, the surface of the cleaning wheel 5 is provided with grooves 11 that are adapted to each of the brushes 6. When the brushes 6 are retracted, they can be completely embedded in the grooves 11, avoiding interference with the serrated plate 1. The cleaning wheel 5 is provided with telescopic structures 12 corresponding to each of the brushes 6. The telescopic structures 12 are used to drive the corresponding brushes 6 to extend outside the grooves 11 or retract into the grooves 11, thereby switching the mode of contact between the brushes 6 and the serrated plate 1, or between the scraper blade 7 and the serrated plate 1, through the extension and retraction of the brushes 6.

[0051] In some embodiments of this application, the telescopic structure 12 includes a connecting rod 121 extending radially along the cleaning wheel 5. One end of the connecting rod 121 extends into the groove 11 and is detachably fixed to the brush 6 by bolts. When the brush 6 becomes worn, it can be quickly disassembled and replaced, making maintenance convenient.

[0052] Additionally, a piston 122 is fixed to the end of the connecting rod 121 away from the brush 6. Inside the cleaning wheel 5, there is a cavity 13 for the piston 122 to slide in. The piston 122 and the inner wall of the cavity 13 are sealed together to form a sealed chamber. A return spring 123 is fitted onto the connecting rod 121 inside the cavity 13. One end of the return spring 123 abuts against the piston 122, and the other end abuts against the inner wall of the cavity 13. The return spring 123 is always in a compressed state, applying a spring force to the piston 122 away from the groove 11, thereby keeping the brush 6 in a contracted state when no external force is applied.

[0053] Furthermore, the rotating shaft 4 has an air passage 14 communicating with the cavity 13. A valve is installed at the air inlet of the air passage 14 to control its opening and closing. When the brush 6 is needed for routine cleaning, the valve is opened to introduce compressed gas into the air passage 14. The compressed gas enters the cavity 13 through the air passage 14, applying a thrust to the piston 122. This thrust overcomes the elastic force of the return spring 123, causing the piston 122 to slide along the cavity 13. This, in turn, causes the connecting rod 121 and the brush 6 to extend radially along the cleaning wheel 5, making the brush 6 protrude from the working surface of the scraper 7. When the scraper 7 is needed for periodic cleaning, the gas in the air passage 14 is discharged. The piston 122 returns to its original position under the elastic force of the return spring 123, causing the connecting rod 121 and the brush 6 to retract radially along the cleaning wheel 5, embedding the brush 6 into the groove 11. At this time, the working surface of the scraper 7 protrudes from the brush 6.

[0054] The above design enables fast pneumatic control response, allowing for rapid switching between the extension and retraction states of the brush 6, thus meeting the need for quick switching between dual modes. Furthermore, the pneumatic structure is small in size and lightweight, making it easy to integrate into the cleaning wheel 5 without increasing its overall volume, ensuring compatibility between the cleaning wheel 5 and the serrated plate 1.

[0055] It should be added that the cross-section of the connecting rod 121 is polygonal (such as square or hexagonal), and a polygonal opening adapted to the connecting rod 121 is provided on the cleaning wheel 5. The polygonal structure restricts the circumferential rotation of the connecting rod 121, so that the connecting rod 121 can only move along its own axis and cannot rotate around its own axis. This ensures that the brush 6 maintains the preset working angle during the extension and retraction process, and avoids the brush 6 from shifting due to the rotation of the connecting rod 121, which would affect the cleaning effect.

[0056] In some embodiments of this application, the height locking structure 8 includes a plurality of threaded rods 801 fixed parallel to and spaced apart on the top of the lifting frame 3. Each threaded rod 801 moves vertically through the translation frame 2, and a locking nut 802 is threadedly connected to the upper end of each threaded rod 801. When it is necessary to lock the height of the lifting frame 3, the lifting frame 3 is moved vertically upward until the top of the lifting frame 3 abuts against the bottom limiting surface of the translation frame 2. Then, the locking nut 802 is tightened so that the bottom surface of the locking nut 802 abuts against the top surface of the translation frame 2. Through the threaded engagement between the locking nut 802 and the threaded rod 801, the height of the lifting frame 3 is fixed, restricting its vertical displacement. To unlock, the locking nut 802 is removed directly, releasing the limitation on the lifting frame 3, allowing the lifting frame 3 to move freely vertically, following the contour of the sawtooth plate 1.

[0057] The height locking structure 8 is simple and reliable in design, easy to operate, and does not require complex electronic control components. It can achieve height locking and unlocking through a purely mechanical structure, with a low failure rate and low maintenance cost.

[0058] Example 2: Please refer to Figures 7 to 8 This embodiment also proposes a laser cutting machine, including a slag removal mechanism for laser cutting as described in Embodiment 1, and a frame 15, with each serrated plate 1 arranged in an array on the worktable of the frame 15. A three-axis feed system is also installed on the frame 15, including X-axis, Y-axis, and Z-axis linear modules. A laser cutting head is installed at the execution end of the three-axis feed system. The three-axis feed system is used to drive the laser cutting head to move along the X-axis, Y-axis, and Z-axis directions to achieve precise cutting of workpieces of different sizes and shapes.

[0059] It should be added that a linear drive mechanism (such as a linear slide, synchronous belt drive mechanism, ball screw module, etc.) is provided between the frame 15 and the translation frame 2. The fixed end of the linear drive mechanism is installed on the frame 15, and the moving end is fixedly connected to the translation frame 2, which is used to drive the translation frame 2 to move along the length direction of the sawtooth plate 1.

[0060] In addition, an undulating mechanism is provided between the frame and the lifting frame 3. The undulating mechanism is used to drive the lifting frame 3 to undulate synchronously with the tooth profile of the sawtooth plate 1. In this embodiment, the undulating mechanism includes guide rollers 16 mounted on both sides of the lifting frame 3 by brackets, and a guide rail 17 adapted to the guide rollers 16 is mounted on the frame 15. The guide rail 17 has a wave-shaped track surface with the same undulating shape as the tooth tip of the sawtooth plate 1.

[0061] Therefore, when the lifting frame 3 moves along the length of the serrated plate 1 under the drive of the linear drive mechanism, the guide roller 16 rolls along the wavy track surface, thereby causing the lifting frame 3 to undulate vertically. In addition, a compression spring is connected between the top of the lifting frame 3 and the translation frame 2. The compression spring always provides a downward elastic force to the lifting frame 3, so that the guide roller 16 can always be in close contact with the track surface of the guide rail 17, avoiding the phenomenon of the roller leaving the track and ensuring the stability of the undulating movement of the lifting frame 3.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slag removal mechanism for a laser cutting machine, used for removing slag from a plurality of sawtooth plates arranged in an array, characterized in that, include: The translation frame can move along the length of the serrated plate; The lifting frame is slidably connected to the translation frame in the vertical direction and can undulate with the toothed contour of the sawtooth plate; a compression spring is connected between the top of the lifting frame and the translation frame. The rotating shaft is rotatably connected to the lifting frame and can rotate around its own axis; Several cleaning wheels correspond one-to-one with several toothed plates and are arranged at intervals on the rotating shaft; several brushes and several scrapers are alternately arranged circumferentially on the surface of each cleaning wheel, and the brushes or scrapers can extend and retract radially along the cleaning wheel. A height locking structure is installed between the lifting frame and the translation frame to lock the vertical height of the lifting frame relative to the translation frame; When the height locking structure is locked, the lifting frame maintains a fixed height and moves synchronously with the translation frame; at this time, the brush is in the extended state or the scraper is in the retracted state, so that the working surface of the brush protrudes from the working surface of the scraper to perform slag removal operation on the tooth tip of the saw blade. When the height locking structure is in the unlocked state, the lifting frame moves synchronously with the translation frame and undulates with the tooth profile of the saw blade; at this time, the brush is in the retracted state or the scraper is in the extended state, so that the working surface of the scraper protrudes from the working surface of the brush, so as to perform slag removal operation on the upper surface and side of the saw blade. The height locking structure includes several threaded rods that are parallel and spaced apart and fixed to the top of the lifting frame. Each threaded rod moves vertically through the translation frame, and a locking nut is threaded to the upper end of each threaded rod.

2. The slag removal mechanism for a laser cutting machine according to claim 1, characterized in that: A drive source is installed on the outer periphery of the lifting frame. The output end of the drive source is connected to the rotating shaft for driving the rotating shaft to rotate around its own axis.

3. The slag removal mechanism for a laser cutting machine according to claim 1, characterized in that: The cleaning wheel has an annular groove on its surface, and the scraper is detachably fixed in the annular groove.

4. The slag removal mechanism for a laser cutting machine according to claim 3, characterized in that: The scraper has a first working part and two second working parts perpendicular to the first working part; The first working part is connected to the bottom wall of the annular groove and is used to remove slag from the upper surface of the sawtooth plate; the second working part is connected to the side wall of the annular groove and is used to remove slag from the side surface of the sawtooth plate.

5. The slag removal mechanism for a laser cutting machine according to claim 1, characterized in that: The cleaning wheel has grooves on its surface that fit each brush individually, and a telescopic structure corresponding to each brush is provided inside the cleaning wheel. The telescopic structure is used to drive the corresponding brush to extend out of the groove or retract into the groove.

6. The slag removal mechanism for a laser cutting machine according to claim 5, characterized in that: The telescopic structure includes a connecting rod extending radially along the cleaning wheel, one end of which extends into a groove and is detachably and fixedly connected to the brush. A piston is fixed at the end of the connecting rod away from the brush. Inside the cleaning wheel, there is a cavity for the piston to slide. A return spring is sleeved on the connecting rod inside the cavity. The return spring is always in a compressed state and is used to apply a spring force to the piston away from the groove.

7. The slag removal mechanism for a laser cutting machine according to claim 6, characterized in that: The rotating shaft has an air passage that communicates with the cavity, and a valve is installed at the air inlet of the air passage.

8. The slag removal mechanism for a laser cutting machine according to claim 6, characterized in that: The connecting rod has a polygonal cross-section, and a polygonal opening adapted to the connecting rod is provided on the cleaning wheel.

9. A laser cutting machine, comprising a slag removal mechanism for a laser cutting machine as described in any one of claims 1-8, characterized in that: It also includes a frame, on which the serrated plates are arranged in an array; A linear drive mechanism is provided between the frame and the translation frame, which is used to drive the translation frame to move along the length direction of the sawtooth plate. An undulating mechanism is provided between the frame and the lifting frame, which is used to drive the lifting frame to undulate synchronously with the tooth profile of the sawtooth plate.

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