A multi-beam laser cleaning machine for large flat surfaces

Abstract

This invention discloses a multi-beam laser cleaning machine for large flat surfaces, relating to the field of laser cleaning equipment. It solves the problems of insufficient flexibility in adjusting the laser irradiation range and the easy entanglement and damage of multiple intersecting optical fibers in existing laser cleaning machines for large flat surfaces. The machine includes a base plate, a gantry frame, a cleaning mechanism, and a winding mechanism. The cleaning mechanism includes a mounting frame, a fixed rod, an adjusting rod, a first laser head, a second laser head, and optical fibers. This invention uses the cleaning mechanism to move the mounting frame along the gantry frame, adjusting the orientation of the first laser head. Simultaneously, it can drive the adjusting rods on both sides to rotate on the fixed rod, adjusting the orientation of the second laser heads on both sides. This ensures that the laser can fully cover the surface of the workpiece to be cleaned. The movement of the gantry frame achieves scanning and cleaning of the workpiece surface. During the movement and deflection of the mounting frame, the winding mechanism guides and winds the optical fibers, preventing excessive stress and entanglement.

Description

Technical Field

[0001] This invention relates to the field of laser cleaning equipment technology, specifically a multi-beam laser cleaning machine for large flat surfaces. Background Technology

[0002] Laser cleaning, as a non-contact, low-damage, and green cleaning technology, has been widely used in scenarios such as rust removal, paint removal, oxide layer removal, and cultural relic preservation on metal surfaces. For the cleaning needs of large planar workpieces (such as ship decks, large plates, and equipment racks), existing equipment mostly adopts a gantry structure to achieve large-area coverage. A single laser cleaning head scans the workpiece surface area by area by moving a gantry back and forth along a track. However, the single-beam solution suffers from low cleaning efficiency and small single-pass coverage area, making it difficult to meet the production cycle requirements for batch cleaning of large workpieces.

[0003] To improve coverage efficiency, existing technologies attempt to employ multi-beam parallel cleaning. However, these technologies generally suffer from technical deficiencies in beam layout and angle adjustment. Most multi-beam devices use multiple laser heads at fixed angles, making it difficult to adapt to changes in the distance between the workpiece surface and the laser head. This easily leads to gaps or excessive overlap in the beam irradiation area. The former creates cleaning blind spots, while the latter causes energy superposition, resulting in substrate ablation and severely affecting cleaning quality and consistency. Although some solutions have angle adjustment capabilities, the adjustment mechanisms are complex and cannot achieve synchronous and precise deflection of multiple beams. Furthermore, no auxiliary cleaning structures are designed for the areas on both sides of large equipment, making it difficult to simultaneously meet the dual requirements of full coverage of large planar surfaces and cleaning of edge areas. In addition, the fiber optic transmission and motion adaptation issues of multi-beam laser cleaning machines are particularly prominent. During the horizontal movement of the laser head with the gantry and the deflection adjustment along the arc guide rail, multiple transmission fibers are prone to loosening, tangling, or excessive stretching, leading to increased laser transmission loss, optical path instability, and even fiber breakage, severely affecting the reliability of equipment operation and the continuity of cleaning. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-beam laser cleaning machine for large flat surfaces that can improve cleaning efficiency while ensuring stable fiber optic transmission, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-beam laser cleaning machine for large flat surfaces, comprising a base plate, a cleaning mechanism, and a winding mechanism. A gantry frame is provided on the upper side of the base plate, the upper half of which is semi-circular. The cleaning mechanism includes a mounting bracket installed on the gantry frame. A fixed rod is fixedly connected to the mounting bracket. Adjusting rods are rotatably connected to both sides of the fixed rod. A first laser head is fixedly connected to the middle of the bottom end of the fixed rod, and a second laser head is fixedly connected to the middle of the bottom end of the adjusting rod. The sides of the fixed rod and the adjusting rod are respectively fixedly connected to... The optical fiber is connected to the first laser head and the second laser head. The cleaning mechanism can drive the mounting frame to move along the gantry, adjust the orientation of the first laser head, and simultaneously drive the adjusting rods on both sides to rotate on the fixed rod, adjusting the orientation of the second laser heads on both sides, so that the laser can fully cover the surface of the workpiece to be cleaned. The winding mechanism is installed on the mounting frame and is used to guide and wind the optical fiber during the movement and deflection of the mounting frame, so as to avoid excessive force and entanglement of the optical fiber, thereby improving the cleaning efficiency while ensuring the stable transmission function of the optical fiber.

[0006] Preferably, the cleaning mechanism further includes a gear column rotatably connected to the mounting frame, an arc-shaped rack meshing with the gear column is fixedly connected inside the gantry frame, an electric telescopic rod is fixedly connected to the fixed rod, a connecting frame is fixedly connected to the telescopic end of the electric telescopic rod, two connecting rods are rotatably connected to the connecting frame, and the two connecting rods are respectively rotatably connected to the adjusting rods on both sides. The mounting frame is provided with a driving component for driving the gear column to rotate, which facilitates the movement of the mounting frame along the gantry frame to adjust the orientation of the first laser head. At the same time, it can synchronously drive the adjusting rods on both sides to rotate on the fixed rod to adjust the orientation of the second laser heads on both sides, so that the laser can fully cover the surface of the workpiece to be cleaned.

[0007] Preferably, the winding mechanism includes a body fixedly mounted on the base plate, a rotating ring rotatably connected to the body, an annular groove on the rotating ring, one end of the optical fiber away from the mounting frame fixedly connected to the side of the rotating ring, one end of the optical fiber communicating with the annular groove, a swing rod fixedly connected to the rotating ring, a first telescopic rod on the swing rod, a second telescopic rod fixedly connected to the side of the mounting frame, a swing frame fixedly connected between the first telescopic rod and the second telescopic rod, and a guide for guiding and winding the optical fiber on the swing frame, facilitating the guidance and winding of the optical fiber during the movement and deflection of the mounting frame, and avoiding excessive force and entanglement of the optical fiber.

[0008] Preferably, the guide includes a fixed plate fixedly installed on both sides of the swing frame, a rotating plate rotatably connected to the side of the fixed plate, two take-up posts fixedly connected between the two rotating plates, two sets of partition plates evenly fixedly connected to the take-up posts, the middle part of the optical fiber passes through the position between the two take-up posts, and the three sets of optical fibers are separated by the partition plates. The rotating plate is provided with a take-up device for assisting in the take-up of the optical fiber, which facilitates the guidance and take-up of the optical fiber.

[0009] Preferably, the winding component includes a rotating rod coaxially fixedly mounted on the side of the rotating disk. A spring-loaded spring fixedly connected to the outer wall of the rotating rod and to the inner wall of the fixed disk is fixedly connected to the outer wall of the rotating rod. The rotating rod passes through the fixed disk and is rotatably connected to the fixed disk. A winding reel is coaxially fixedly connected to the end of the rotating rod away from the rotating disk. A pull cable is fixedly connected to the outer wall of the winding reel to facilitate winding the optical fiber.

[0010] Preferably, the driving component includes a first motor fixedly installed in the mounting frame, a worm gear coaxially fixedly connected to the output end of the first motor, a worm wheel rotatably connected to the mounting frame and meshing with the worm gear, and transmission gears coaxially fixedly connected to both sides of the worm wheel and capable of meshing with the gear column, so as to drive the gear column to rotate.

[0011] Preferably, guide tubes are fixedly connected to the sides of both the fixed rod and the adjusting rod. The three sets of optical fibers pass through the guide tubes and are slidably connected to the inner wall of the guide tubes. The end of the cable away from the winding reel is fixedly connected to the outer wall of the guide tubes located on both sides, which facilitates further guidance and winding of the optical fibers.

[0012] Preferably, guide rails are fixedly connected to both sides of the base plate, and the bottom of the gantry frame is slidably connected to the upper side of the guide rails in a horizontal direction. The guide rails are provided with sliding parts for driving the gantry frame to slide and adjust, so as to facilitate the control of the gantry frame to move.

[0013] Preferably, the sliding component includes a second motor fixedly mounted on the guide rail, a threaded rod rotatably connected inside the guide rail, the threaded rod passing through the gantry frame and threadedly connected to the gantry frame, a first bevel gear coaxially fixedly connected to one end of the threaded rod, a rotating shaft rotatably connected to the base plate, and a second bevel gear coaxially fixedly connected to both ends of the rotating shaft, which meshes with and drives the first bevel gears on both sides. The output end of the second motor is coaxially fixedly connected to one end of any set of threaded rods, facilitating the sliding adjustment of the gantry frame.

[0014] Preferably, the inner wall of the annular groove is made of fluorine-doped quartz material, and the laser output end of the machine body is connected to the annular groove to facilitate high-intensity reflection, so that the laser emitted by the machine body can be stably output to the optical fiber for transmission through the annular groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a multi-beam laser cleaning machine for large flat surfaces, solving the problems of insufficient flexibility in adjusting the laser irradiation range and the easy entanglement and damage of multiple intersecting optical fibers in existing laser cleaning machines for large flat surfaces. The cleaning mechanism drives the mounting frame to move along the gantry, adjusting the orientation of the first laser head. Simultaneously, it can drive the adjusting rods on both sides to rotate on the fixed rod, adjusting the orientation of the second laser heads on both sides, so that the laser can fully cover the surface of the workpiece to be cleaned. The movement of the gantry realizes the scanning and cleaning of the workpiece surface. During the movement and deflection of the mounting frame, the winding mechanism guides and winds the optical fibers, avoiding excessive stress and entanglement of the optical fibers, so that the optical fibers can continuously and stably deliver the laser. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the winding mechanism of the present invention; Figure 3 This is a partial structural diagram of the cleaning mechanism of the present invention; Figure 4 for Figure 3 Enlarged view of region A in the middle; Figure 5 This is a partial structural diagram of the sliding component of the present invention; Figure 6 for Figure 5 Enlarged view of region B in the middle; Figure 7 This is a partial structural exploded view of the cleaning mechanism of the present invention; Figure 8 for Figure 7 Enlarged view of region C; Figure 9 This is a partial structural exploded view of the winding mechanism of the present invention; Figure 10 for Figure 9 Enlarged view of region D in the middle.

[0017] In the diagram: 1-Base plate; 2-Gantry frame; 3-Mounting frame; 4-Fixing rod; 5-Adjusting rod; 6-First laser head; 7-Second laser head; 8-Fiber optic cable; 9-Gear column; 10-Arc rack; 11-Electric telescopic rod; 12-Connecting frame; 13-Connecting rod; 14-Machine body; 15-Rotating ring; 16-Annular groove; 17-Swing rod; 18-First telescopic rod; 19-Second telescopic rod; 20-Swing frame; 21-Fixing disc; 22-Rotating disc; 23-Rewinding column; 24-Separator plate; 25-Rotating rod; 26-Curled spring; 27-Rewinding disc; 28-Cable; 29-First motor; 30-Worm gear; 31-Worm wheel; 32-Transmission gear; 33-Guide tube; 34-Guide rail; 35-Second motor; 36-Threaded rod; 37-First bevel gear; 38-Rotating shaft; 39-Second bevel gear. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-8 This invention provides a technical solution: a multi-beam laser cleaning machine for large flat surfaces, comprising a base plate 1, a cleaning mechanism, and a winding mechanism. A gantry frame 2 is provided on the upper side of the base plate 1, the upper half of which is semi-circular. The cleaning mechanism includes a mounting frame 3 installed on the gantry frame 2. A fixed rod 4 is fixedly connected to the mounting frame 3. Adjusting rods 5 are rotatably connected to both sides of the fixed rod 4. A first laser head 6 is fixedly connected to the middle of the bottom end of the fixed rod 4, and a second laser head 7 is fixedly connected to the middle of the bottom end of the adjusting rod 5. The fixed rod 4 and the adjusting rod 5... Optical fibers 8, which are connected to the first laser head 6 and the second laser head 7, are fixedly connected to the sides respectively. The cleaning mechanism can drive the mounting frame 3 to move along the gantry frame 2, adjust the orientation of the first laser head 6, and simultaneously drive the adjusting rods 5 on both sides to rotate on the fixed rod 4, adjusting the orientation of the second laser heads 7 on both sides, so that the laser can fully cover the surface of the workpiece to be cleaned. The winding mechanism is installed on the mounting frame 3 and is used to guide and wind up the optical fiber 8 during the movement and deflection of the mounting frame 3, so as to avoid excessive force and entanglement of the optical fiber 8.

[0020] Please see Figures 1-8The cleaning mechanism shown in the figure also includes a gear column 9 rotatably connected to the mounting frame 3. An arc-shaped rack 10 meshing with the gear column 9 is fixedly connected inside the gantry frame 2. An electric telescopic rod 11 is fixedly connected to the fixed rod 4. A connecting frame 12 is fixedly connected to the telescopic end of the electric telescopic rod 11. Two connecting rods 13 are rotatably connected to the connecting frame 12. The two connecting rods 13 are rotatably connected to the adjusting rods 5 on both sides respectively. The mounting frame 3 is provided with a driving component for driving the gear column 9 to rotate. The driving component includes a first motor 29 fixedly installed inside the mounting frame 3. The first motor 29 can rotate in both directions and is preferably model YYHS-40. A worm gear 30 is coaxially fixedly connected to the output end of the first motor 29. A worm wheel 31 meshing with the worm gear 30 is rotatably connected to the mounting frame 3. Transmission gears 32 that can mesh with the gear column 9 are coaxially fixedly connected to both sides of the worm wheel 31.

[0021] Please see Figures 2-10 The winding mechanism shown in the figure includes a body 14 fixedly mounted on a base plate 1. A rotating ring 15 is rotatably connected to the body 14. An annular groove 16 is formed on the rotating ring 15. The inner wall of the annular groove 16 is made of fluorine-doped quartz material. The laser output end of the body 14 is connected to the annular groove 16. One end of the optical fiber 8 away from the mounting frame 3 is fixedly connected to the side of the rotating ring 15. One end of the optical fiber 8 is connected to the annular groove 16. A swing rod 17 is fixedly connected to the rotating ring 15. A first telescopic rod 18 is provided on the swing rod 17. A second telescopic rod 19 is fixedly connected to the side of the mounting frame 3. The first telescopic rod 18... A swing frame 20 is fixedly connected to the second telescopic rod 19. The swing frame 20 is equipped with a guide for guiding and winding the optical fiber 8. The guide includes a fixed plate 21 fixedly installed on both sides of the swing frame 20. A rotating plate 22 is rotatably connected to the side of the fixed plate 21. Two winding posts 23 are fixedly connected between the two rotating plates 22. Two sets of partition plates 24 are evenly fixedly connected to the winding posts 23. The middle part of the optical fiber 8 passes through the position between the two winding posts 23. The three sets of optical fibers 8 are separated by partition plates 24. The rotating plate 22 is equipped with a winding component for assisting in winding the optical fiber 8.

[0022] Please see Figures 5-10The winding component shown in the figure includes a rotating rod 25 coaxially fixedly installed on the side of the rotating disk 22. A spring 26 fixedly connected to the inner wall of the fixed disk 21 is fixedly connected to the outer wall of the rotating rod 25. The rotating rod 25 passes through the fixed disk 21 and is rotatably connected to the fixed disk 21. A winding disk 27 is coaxially fixedly connected to the end of the rotating rod 25 away from the rotating disk 22. A cable 28 is fixedly connected to the outer wall of the winding disk 27. Guide tubes 33 are fixedly connected to the sides of the fixed rod 4 and the adjusting rod 5 respectively. Three sets of optical fibers 8 pass through the guide tubes 33 respectively and are slidably connected to the inner wall of the guide tubes 33. The end of the cable 28 away from the winding disk 27 is fixedly connected to the outer wall of the guide tubes 33 located on both sides. Alternatively, the end of the cable 28 can be fixedly connected to the two ends of the fixed rod 4.

[0023] Please see Figures 1-6 In the figure, guide rails 34 are fixedly connected to both sides of the base plate 1. The bottom of the gantry frame 2 is slidably connected to the upper side of the guide rails 34 in the horizontal direction. The guide rails 34 are provided with sliding parts for driving the gantry frame 2 to slide and adjust. The sliding parts include a second motor 35 fixedly installed on the guide rails 34. The second motor 35 can rotate in both directions and is preferably model Y80M1-2. A threaded rod 36 is rotatably connected inside the guide rails 34. The threaded rod 36 passes through the gantry frame 2 and is threadedly connected to the gantry frame 2. A first bevel gear 37 is coaxially fixedly connected to one end of the threaded rod 36. A rotating shaft 38 is rotatably connected to the base plate 1. A second bevel gear 39 that meshes with and drives the first bevel gears 37 on both sides is coaxially fixedly connected to both ends of the rotating shaft 38. The output end of the second motor 35 is coaxially fixedly connected to one end of any set of threaded rods 36.

[0024] Working principle: The large workpiece to be cleaned is moved above the base plate 1. A conveyor belt can be installed above the base plate 1 to assist in the transport of the workpiece. By controlling the first motor 29 to drive the worm gear 30 to rotate, the worm gear 30 drives the worm wheel 31 to drive the transmission gears 32 on both sides to rotate. The transmission gears 32 drive the gear column 9 to rotate, so that the gear column 9 moves along the outer wall of the arc-shaped rack 10. This causes the mounting frame 3 and the fixed rod 4 to deflect and move along the upper arc of the gantry 2, changing the position and irradiation direction of the first laser head 6. During this process, the mounting frame 3 also drives the second telescopic rod. The first telescopic rod 19 and the first telescopic rod 18 slide and extend to change the position of the swing frame 20. Since the first telescopic rod 18 and the second telescopic rod 19 are straight rod structures and slide horizontally along the swing rod 17, the mounting frame 3 will drive the swing frame 20 and the swing rod 17 to deflect by the same angle through the first telescopic rod 18 and the second telescopic rod 19 during the deflection process. In addition, the axis of the rotating ring 15 is on the same straight line as the center of the upper semi-circular arc of the gantry 2, so that the rotating ring 15 will also deflect synchronously, thereby changing the deflection angle at the connection of the two ends of the optical fiber 8 and avoiding entanglement.

[0025] The laser emitted from the body 14 is placed into the annular groove 16. Multiple reflective mirrors facing the input end of the optical fiber 8 can be installed within the annular groove 16. After multiple reflections within the annular groove 16, the laser is output into the optical fiber 8. It is then transmitted through the optical fiber 8 to the positions of the first laser head 6 and the second laser head 7 for output. The output laser beam is fan-shaped and illuminates the object surface. At this time, the three fan-shaped laser beams will have overlapping areas. The position of the connecting frame 12 can be changed by controlling the extension and retraction of the electric telescopic rod 11, thereby driving the connecting rod 13 to cause the adjusting rods 5 on both sides to swing synchronously, changing the fan-shaped illumination area of ​​the second laser heads 7 on both sides, so that the fan-shaped laser beams on both sides and the central fan-shaped laser beam can illuminate the object surface. The surface is fully covered with a small overlap of about 1mm, further expanding the cleaning range of the object surface. For some large flat surfaces, the number of cleaning cycles can be reduced. By controlling the second motor 35 to drive the threaded rod 36 to rotate, the threaded rods 36 on both sides can drive the second bevel gear 39 through the first bevel gear 37 and then through the transmission of the rotating shaft 38 to achieve synchronous rotation. This allows the bottom sides of the gantry 2 to move synchronously and stably along the guide rail 34, so that the first laser head 6 and the second laser head 7 can continuously move and clean in the horizontal direction along the extension direction of the workpiece surface when the irradiation angle is set, thus improving the cleaning efficiency.

[0026] The rotation of the spring 26 drives the rotating rod 25 to rotate the rotating disk 22. The rotating disk 22 separates and winds up the three sets of optical fibers 8 through two winding posts 23 and a separator plate 24. The radius of the winding posts 23 is larger than the maximum bending radius of the optical fiber 8, so that the optical fiber 8 can maintain stable laser transmission during the winding process around the winding posts 23. The guide tube 33 is set to further guide the optical fiber 8 to prevent it from falling and bending directly at the end near the mounting bracket 3. By setting the cable 28 and the winding disk 27, the cable 28 can directly drive the winding disk 27 to rotate when the gantry 2 is away from the machine body 14, thereby compressing the spring 26, causing the rotating disk 22 and the winding posts 23 to rotate and release the winding of the optical fiber 8. In this process, it is possible to avoid directly pulling the optical fiber 8 to release its winding state. Because the winding force of the spring 26 is relatively large, directly pulling the optical fiber 8 may damage it. Therefore, pull cables 28 and a winding reel 27 are set at both ends. The pull cables 28 can be used to drive the optical fiber 8 directly, reducing damage to the optical fiber 8. When the gantry 2 moves towards the body 14, the tension of the pull cables 28 on the winding reel 27 decreases, the spring 26 rebounds, and drives the rotating disk 22 and the winding column 23 to rotate in the opposite direction to complete the winding of the optical fiber. At the same time, when the mounting frame 3 moves along the upper arc surface of the gantry 2, the winding column 23 and the rotating disk 22 can deflect synchronously without affecting the guiding and winding functions of the optical fiber 8, avoiding loosening and tangling of the optical fiber 8, so that the optical fiber 8 can continuously and stably deliver laser. The length and stroke of the pull cables 28 are matched to ensure the synchronization with the optical fiber 8 during the winding and unwinding process.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0028] 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 multi-beam laser cleaning machine for large flat surfaces, characterized in that, include: A base plate (1) is provided on the upper side of the base plate (1), and the upper half of the gantry frame (2) is semi-circular. Also includes: The cleaning mechanism includes a mounting frame (3) installed on the gantry (2), a fixed rod (4) fixedly connected to the mounting frame (3), and an adjusting rod (5) rotatably connected to both sides of the fixed rod (4). A first laser head (6) is fixedly connected to the middle of the bottom end of the fixed rod (4), and a second laser head (7) is fixedly connected to the middle of the bottom end of the adjusting rod (5). Optical fibers (8) connected to the first laser head (6) and the second laser head (7) are fixedly connected to the sides of the fixed rod (4) and the adjusting rod (5), respectively. The cleaning mechanism can drive the mounting frame (3) to move along the gantry (2) to adjust the orientation of the first laser head (6), and can simultaneously drive the adjusting rods (5) on both sides to rotate on the fixed rod (4) to adjust the orientation of the second laser heads (7) on both sides, so that the laser can fully cover the surface of the workpiece to be cleaned. A winding mechanism is installed on the mounting frame (3) to guide and wind the optical fiber (8) during the movement and deflection of the mounting frame (3) to avoid excessive force and entanglement of the optical fiber (8).

2. The multi-beam laser cleaning machine for large flat surfaces according to claim 1, characterized in that: The cleaning mechanism also includes a gear column (9) rotatably connected to the mounting frame (3), an arc-shaped rack (10) meshing with the gear column (9) is fixedly connected inside the gantry frame (2), an electric telescopic rod (11) is fixedly connected to the fixed rod (4), a connecting frame (12) is fixedly connected to the telescopic end of the electric telescopic rod (11), two connecting rods (13) are rotatably connected to the connecting frame (12), and the two connecting rods (13) are rotatably connected to the adjusting rods (5) on both sides respectively. The mounting frame (3) is provided with a driving component for driving the gear column (9) to rotate.

3. A multi-beam laser cleaning machine for large flat surfaces according to claim 1, characterized in that: The winding mechanism includes a body (14) fixedly mounted on the base plate (1), a rotating ring (15) rotatably connected to the body (14), an annular groove (16) provided on the rotating ring (15), one end of the optical fiber (8) away from the mounting frame (3) being fixedly connected to the side of the rotating ring (15), one end of the optical fiber (8) being connected to the annular groove (16), a swing rod (17) fixedly connected to the rotating ring (15), a first telescopic rod (18) provided on the swing rod (17), a second telescopic rod (19) fixedly connected to the side of the mounting frame (3), a swing frame (20) fixedly connected between the first telescopic rod (18) and the second telescopic rod (19), and a guide member provided on the swing frame (20) for guiding and winding the optical fiber (8).

4. A multi-beam laser cleaning machine for large flat surfaces according to claim 3, characterized in that: The guide includes a fixed disk (21) fixedly installed on both sides of the swing frame (20). A rotating disk (22) is rotatably connected to the side of the fixed disk (21). Two take-up columns (23) are fixedly connected between the two rotating disks (22). Two sets of partition plates (24) are evenly fixedly connected on the take-up columns (23). The middle part of the optical fiber (8) passes through the position between the two take-up columns (23). The three sets of optical fibers (8) are separated by the partition plates (24). The rotating disk (22) is provided with a take-up device for assisting in taking up the optical fiber (8).

5. A multi-beam laser cleaning machine for large flat surfaces according to claim 4, characterized in that: The take-up component includes a rotating rod (25) coaxially fixedly installed on the side of the rotating disk (22). A spring spring (26) fixedly connected to the inner wall of the fixed disk (21) is fixedly connected to the outer wall of the rotating rod (25). The rotating rod (25) passes through the fixed disk (21) and is rotatably connected to the fixed disk (21). A take-up reel (27) is coaxially fixedly connected to one end of the rotating rod (25) away from the rotating disk (22). A cable (28) is fixedly connected to the outer wall of the take-up reel (27).

6. A multi-beam laser cleaning machine for large flat surfaces according to claim 2, characterized in that: The driving component includes a first motor (29) fixedly installed in the mounting frame (3). The output end of the first motor (29) is coaxially fixedly connected to a worm (30). A worm wheel (31) that meshes with the worm (30) is rotatably connected to the mounting frame (3). A transmission gear (32) that can mesh with the gear column (9) is coaxially fixedly connected to both sides of the worm wheel (31).

7. A multi-beam laser cleaning machine for large flat surfaces according to claim 5, characterized in that: The fixed rod (4) and the adjusting rod (5) are respectively fixedly connected to the guide tube (33). The three sets of optical fibers (8) pass through the guide tube (33) and are slidably connected to the inner wall of the guide tube (33). The end of the cable (28) away from the winding reel (27) is fixedly connected to the outer wall of the guide tube (33) located on both sides.

8. A multi-beam laser cleaning machine for large flat surfaces according to claim 1, characterized in that: The base plate (1) is fixedly connected to guide rails (34) on both sides. The bottom of the gantry frame (2) is slidably connected to the upper side of the guide rails (34) in the horizontal direction. The guide rails (34) are provided with sliding parts for driving the gantry frame (2) to slide and adjust.

9. A multi-beam laser cleaning machine for large flat surfaces according to claim 8, characterized in that: The sliding component includes a second motor (35) fixedly mounted on the guide rail (34). A threaded rod (36) is rotatably connected inside the guide rail (34). The threaded rod (36) passes through the gantry frame (2) and is threadedly connected to the gantry frame (2). A first bevel gear (37) is coaxially fixedly connected to one end of the threaded rod (36). A rotating shaft (38) is rotatably connected to the base plate (1). Both ends of the rotating shaft (38) are coaxially fixedly connected to a second bevel gear (39) that meshes with and drives the first bevel gear (37) on both sides. The output end of the second motor (35) is coaxially fixedly connected to one end of any set of threaded rods (36).

10. A multi-beam laser cleaning machine for large flat surfaces according to claim 3, characterized in that: The inner wall of the annular groove (16) is made of fluorine-doped quartz material, and the laser output end of the body (14) is connected to the annular groove (16).

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