Laser engraving and milling machine for finish machining of metal products

Abstract

The invention belongs to the technical field of laser machining equipment, and discloses a laser engraving and milling machine used for finish machining of metal products, the laser engraving and milling machine comprises an engraving and milling equipment body and a laser, a sliding block is installed on the outer wall of the laser, a guide rail is slidably installed in the sliding block, and the guide rail is fixedly installed in the engraving and milling equipment body; a cleaning assembly for maintenance is arranged on the outer wall of the guide rail; the cleaning assembly comprises a maintenance box slidably mounted on the outer wall of the guide rail and cleaning cloth, the cleaning cloth is slidably mounted in the maintenance box through a driving assembly, and a spraying assembly for lubricating the guide rail is arranged in the maintenance box. And through the cleaning cloth, the spraying pipe and the spiral packing auger, integrated cleaning and lubricating of the guide rail in the equipment operation process are achieved. The cleaning process and the lubricating process are combined into a whole, shutdown and manual intervention are not needed, the technical problems that in traditional manual maintenance, cleaning is not thorough, lubricating is not uniform, and metal particles are ground into a roller path due to an improper cleaning method are solved, and the long-term operation precision of the guide rail is effectively guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of laser processing equipment technology, specifically a laser engraving machine for precision processing of metal products. Background Technology

[0002] A laser engraving machine is a precision device that uses a high-energy-density laser beam to perform non-contact processing on the surface of materials. It is widely used in marking, engraving, cutting, and micro-hole processing of metal products. Compared with traditional CNC machining, laser engraving has significant advantages such as high processing accuracy, no tool wear, no mechanical stress, and the ability to process complex graphics. It plays a particularly important role in the fine processing of metal products such as aluminum alloys, stainless steel, and titanium alloys.

[0003] In existing laser engraving machines, the core moving component—the guide rail system—mostly uses square linear guide rails. These guide rails are widely used in industrial metal processing equipment due to their high rigidity, high load-bearing capacity, and micron-level positioning accuracy. However, in actual use, especially in processing metals such as aluminum and aluminum-magnesium alloys, the equipment generates a large amount of metal dust and debris. These impurities easily adhere to the guide rail surface and enter the ball bearing tracks inside the slider as it moves, severely affecting the guide rail's operating accuracy and service life.

[0004] Currently, this problem is mainly addressed by manual, periodic cleaning and lubrication. This method is not only cumbersome and inefficient, but also makes it difficult to guarantee thorough cleaning and even lubrication. More importantly, improper cleaning methods, such as wiping directly with an ordinary cloth, may actually crush metal particles into the raceway, accelerating guide rail wear, leading to decreased machining accuracy, or even equipment failure. Summary of the Invention

[0005] The purpose of this invention is to provide a laser engraving machine for precision machining of metal products, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a laser engraving machine for precision machining of metal products, comprising a main body of the engraving equipment and a laser, wherein a slider is installed on the outer wall of the laser, a guide rail is slidably installed inside the slider, and the guide rail is fixedly installed inside the main body of the engraving equipment; The outer wall of the guide rail is provided with a cleaning component for maintenance; The cleaning assembly includes a maintenance box and a cleaning cloth that are slidably mounted on the outer wall of the guide rail. The cleaning cloth is slidably mounted in the maintenance box via a drive assembly. The maintenance box is fixedly mounted on one side of the slider. The maintenance box is equipped with a spray assembly for lubricating the guide rail. The spray assembly includes a negative pressure pump installed in the maintenance box. The input and output ends of the negative pressure pump are respectively connected to a suction pipe and a connecting pipe. Spray pipes are evenly arranged on the outer wall of the connecting pipe. The openings of the spray pipes face the cleaning cloth. A slag discharge assembly is installed at the bottom of the cleaning cloth.

[0007] As a further technical solution of the present invention, the spray pipe is disposed on the side of the cleaning cloth away from the guide rail.

[0008] As a further technical solution of the present invention, the drive assembly includes a rod, a transmission gear, a slide groove and a tooth block. The rod is evenly embedded in the cleaning cloth. Both ends of the rod pass through the cleaning cloth and are slidably installed in the slide groove. Both slide grooves are opened in the maintenance box. The insertion rod is equipped with a transmission gear that is controlled to rotate by a motor. The outer wall of the transmission gear is meshed with tooth blocks, which are evenly installed in the slide groove.

[0009] As a further technical solution of the present invention, two squeezing rollers are provided above the spray pipe, and the two squeezing rollers are respectively located on the inner and outer sides of the cleaning cloth.

[0010] As a further technical solution of the present invention, the outer wall of the cleaning cloth is provided with a plurality of limiting rollers, and each of the limiting rollers is installed in the maintenance box.

[0011] As a further technical solution of the present invention, the slag discharge assembly includes a spiral auger disposed inside a cleaning cloth. The spiral auger is rotatably installed in a maintenance box via a first rotating shaft. A filter screen is disposed below the spiral auger and is fixedly installed in the maintenance box.

[0012] As a further technical solution of the present invention, a first gear is fixedly connected to one end of the first rotating shaft, a second gear and a third gear are meshed on the outside of the first gear, the second gear is fixedly installed inside the third gear, a fourth gear is meshed on the outer wall of the third gear, a second rotating shaft is embedded in the fourth gear, a third rotating shaft is connected to one side of the second rotating shaft through a belt drive mechanism, a water turbine blade is fixedly installed on the outer wall of the third rotating shaft, and the water turbine blade is rotatably installed inside the suction pipe.

[0013] As a further technical solution of the present invention, a cam is provided on one side of the spiral auger, and a fourth rotating shaft is fixedly connected to both ends of the cam. Both of the fourth rotating shafts are rotatably installed in the maintenance box, and a coil spring is provided on the outside of both of the fourth rotating shafts. A fifth gear is fixedly installed on the outer wall of the fourth rotating shaft. A rack plate meshes with the bottom of the fifth gear. A guide plate is provided on one side of the rack plate. The guide plate is fixedly installed on the outer wall of the insertion rod.

[0014] The beneficial effects of this invention are as follows: 1. This invention achieves integrated cleaning and lubrication of the guide rail during equipment operation through a cleaning cloth, spray pipe, and auger. Specifically, the cleaning cloth is fitted onto the outer wall of the guide rail and moves synchronously with the slider. The spray pipe sprays lubricating oil downwards from the outside of the cleaning cloth, allowing the lubricating oil to penetrate the fiber layer and accurately reach the contact surface of the guide rail. Simultaneously, the liquid pressure pushes out metal dust that has penetrated deep into the fibers, achieving self-cleaning and regeneration of the cleaning cloth. The auger rotates at low speed close to the bottom inner side of the cleaning cloth, actively scraping off the oil sludge and impurities washed down by the spray and directionally conveying them to the filter screen. Thus, the cleaning and lubrication processes are combined into one, eliminating the need for machine shutdown and manual intervention. This avoids the technical problems of incomplete cleaning, uneven lubrication, and metal particles being crushed into the raceway due to improper cleaning methods in traditional manual maintenance, effectively ensuring the long-term operational accuracy of the guide rail.

[0015] 2. This invention significantly improves the removal capacity of highly viscous impurities and extends the service life of the cleaning cloth by incorporating a cam and an intermittently reversible auger. Specifically, the cam, driven by a push rod, intermittently presses the cleaning cloth towards the auger, and after pressing, maintains a pressed state through a fixing block at the end of the rack plate, providing sufficient scraping time for the auger. This allows the highly viscous sludge generated during aluminum-magnesium alloy processing to creep out and be thoroughly scraped off under continuous pressure. The auger uses alternating meshing of sector gears to achieve intermittent forward and reverse rotation. During reverse rotation, the sludge adhering to the blade surface automatically peels off under the action of inertial force and reverse shear force, achieving self-cleaning of the blades. This structure ensures efficient slag removal while significantly reducing continuous friction between the cleaning cloth and the auger, extending the service life of the cleaning cloth, and avoiding secondary pollution caused by sludge splashing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the maintenance box of the present invention; Figure 3 This is a schematic diagram of the cleaning cloth structure of the present invention; Figure 4 This is a first-view structural cross-sectional diagram of the maintenance box of the present invention; Figure 5 This is a schematic diagram of the structure of the spray assembly of the present invention; Figure 6 This is a schematic diagram of the spiral auger structure of the present invention; Figure 7 This is a schematic diagram of the cam structure of the present invention; Figure 8 This is a schematic cross-sectional view of the maintenance box structure from a second perspective of the present invention.

[0017] In the diagram: 1. Main body of the engraving equipment; 2. Laser; 3. Slider; 4. Guide rail; 5. Maintenance box; 6. Cleaning cloth; 7. Insert rod; 8. Transmission gear; 9. Slide groove; 10. Tooth block; 11. Connecting pipe; 12. Spray pipe; 13. Negative pressure pump; 14. Suction pipe; 15. Extrusion roller; 16. Limiting roller; 17. Spiral auger; 18. First rotating shaft; 19. First gear; 20. Second gear; 21. Third gear; 22. Fourth gear; 23. Second rotating shaft; 24. Belt drive mechanism; 25. Third rotating shaft; 26. Water turbine blade; 27. Filter screen; 28. Cam; 29. ​​Fourth rotating shaft; 30. Fifth gear; 31. Rack plate; 32. Guide plate; 33. Coil spring. 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] like Figures 1 to 8 As shown in the embodiment of the present invention, a laser engraving machine for precision processing of metal products includes a main body 1 of the engraving equipment and a laser 2. A slider 3 is installed on the outer wall of the laser 2, and a guide rail 4 is slidably installed inside the slider 3. The guide rail 4 is fixedly installed inside the main body 1 of the engraving equipment. The outer wall of guide rail 4 is equipped with a cleaning component for maintenance; The cleaning assembly includes a maintenance box 5 and a cleaning cloth 6 that are slidably mounted on the outer wall of the guide rail 4. The cleaning cloth 6 is slidably mounted in the maintenance box 5 via a drive assembly. The maintenance box 5 is fixedly mounted on one side of the slider 3. A spray assembly for lubricating the guide rail 4 is provided inside the maintenance box 5. The spray assembly includes a negative pressure pump 13 installed in the maintenance box 5. The input end and output end of the negative pressure pump 13 are respectively connected to a suction pipe 14 and a connecting pipe 11. Spray pipes 12 are evenly arranged on the outer wall of the connecting pipe 11. The opening of the spray pipe 12 faces the cleaning cloth 6. A slag discharge assembly is installed at the bottom of the cleaning cloth 6.

[0020] When in use, the negative pressure pump 13 is started to draw the lubricating oil in the maintenance box 5 through the suction pipe 14 into the connecting pipe 11 and finally spray it out from the spray pipe 12 to one side of the cleaning cloth 6. After the cleaning cloth 6 is soaked in lubricating oil, it is applied to the surface of the guide rail 4, so that the cleaning cloth 6 continuously wipes the three sides (top surface, bottom surface and front surface near laser 2) of the guide rail 4 in the cycle. The maintenance box 5 moves synchronously with the slider 3, while the spray component continuously supplies lubricating oil to the cleaning cloth 6. The cleaning cloth 6 has both cleaning and lubrication functions, cleaning and lubricating the guide rail 4. The entire maintenance process is completed automatically with the operation of the equipment without manual intervention, which significantly improves maintenance efficiency and equipment utilization.

[0021] The bottom of the maintenance box 5 is pre-filled with lubricating oil, and the maintenance box 5 can be connected to an external lubricating oil tank through a pipe to obtain sufficient lubricating oil.

[0022] The inner walls on both sides of the maintenance box 5 are equipped with sponges (not shown in the figure). After the cleaning cloth 6 completes the initial application, the sponge is used to smooth the lubricating oil on the surface of the guide rail 4, eliminating the phenomenon of excessively thick or thin local oil film, ensuring that the surface of the guide rail 4 is uniformly lubricated, effectively improving the uniformity of the oil film, extending the oil film retention time, and reducing lubricating oil dripping and waste.

[0023] The cleaning cloth 6 is preferably made of non-woven fabric, which can completely avoid secondary pollution caused by fiber shedding during traditional cotton wiping, prevent the shed cotton fibers from mixing with metal dust to form new abrasive media, and effectively protect the precision of the guide rail 4.

[0024] like Figure 4 and Figure 8 As shown, the spray pipe 12 is located on the side of the cleaning cloth 6 away from the guide rail 4.

[0025] During the wiping process of the guide rail 4, metal dust and sludge will gradually penetrate into the deep layers of the fibers. The lubricating oil sprayed from the outside of the cleaning cloth 6 to the inside can use the pressure and fluidity of the liquid to push out the impurities deep in the fibers, thus achieving self-cleaning of the cleaning cloth 6. This effectively avoids secondary pollution caused by the accumulation of impurities, thereby extending the service life of the cleaning cloth 6.

[0026] The spray pipe 12 is tilted downwards, and the spray direction is consistent with the direction of gravity, so that the spray liquid carries the washed-down impurities and flows downwards, naturally guiding them to the bottom of the maintenance box 5, making it easy to collect the impurities.

[0027] like Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the drive assembly includes a rod 7, a transmission gear 8, a slide groove 9, and a tooth block 10. The rod 7 is evenly embedded in the cleaning cloth 6. Both ends of the rod 7 pass through the cleaning cloth 6 and are slidably installed in the slide groove 9. Both slide grooves 9 are opened in the maintenance box 5. The insertion rod 7 is equipped with a transmission gear 8 that is controlled to rotate by a motor. The outer wall of the transmission gear 8 is meshed with tooth blocks 10, which are evenly installed in the slide groove 9.

[0028] During operation, the transmission gear 8 is driven by the motor to rotate. During the rotation, the transmission gear 8 meshes with the tooth block 10 and moves, causing the insertion rod 7 to slide in the slide groove 9, thereby making the cleaning cloth 6 make a continuous reciprocating motion around the outer wall of the guide rail 4.

[0029] Wipe with cleaning cloth 6 from top to bottom of guide rail 4 (see reference). Figure 4 (In a clockwise direction), the impurities wiped off will fall naturally under the influence of gravity and quickly leave the surface of guide rail 4.

[0030] When wiping from top to bottom, the cleaning cloth 6 touches the areas that have not yet been wiped each time, and the contaminants are continuously pushed downwards, resulting in a relatively uniform degree of contamination on the cloth surface and making it less likely for localized areas to become too dirty.

[0031] like Figure 4 and Figure 8 As shown, two squeezing rollers 15 are provided above the spray pipe 12, and the two squeezing rollers 15 are located on the inner and outer sides of the cleaning cloth 6 respectively.

[0032] When the cleaning cloth 6 is soaked in lubricating oil, it moves upward and contacts the extrusion roller 15. The two extrusion rollers 15 squeeze the cleaning cloth 6 to squeeze out the excess lubricating oil, thereby controlling the oil content of the cleaning cloth 6 and keeping it in an ideal state with a moderate oil content when it enters the working area.

[0033] like Figure 2 and Figure 4 As shown, the outer wall of the cleaning cloth 6 is provided with multiple limiting rollers 16, and each limiting roller 16 is installed inside the maintenance box 5.

[0034] The limiting roller 16 is located at the turning point of the guide rail 4, which guides the cleaning cloth 6 in an orderly manner, so that the cloth surface remains flat and smooth when turning, avoiding wrinkles and jamming.

[0035] like Figure 4 , Figure 6 and Figure 8 As shown, the slag discharge assembly includes a spiral auger 17 disposed within the cleaning cloth 6. The spiral auger 17 is rotatably mounted in the maintenance box 5 via a first rotating shaft 18. A filter screen 27 is disposed below the spiral auger 17 and is fixedly mounted in the maintenance box 5.

[0036] During operation, the spiral auger 17 rotates continuously against the bottom inner side of the cleaning cloth 6, actively scraping away the oil and sludge accumulated at the bottom after spraying and cleaning, thus preventing secondary pollution caused by the cleaning cloth 6 re-lifting the impurities after they accumulate at the bottom.

[0037] The cleaning cloth 6 does not adhere to the inner wall of the maintenance box 5 on both sides, leaving a certain gap, through which impurities can be discharged downwards.

[0038] Through the continuous rotation and conveying of the auger 17, impurities are cleaned out of the cleaning cloth 6 in real time, avoiding the trouble of frequent manual cleaning and extending the continuous operation time of the equipment.

[0039] Furthermore, impurities are directed to the top of filter screen 27, and lubricating oil flows down for recycling after being filtered by filter screen 27, and can be reused.

[0040] The filter screen 27 is high on both sides and low in the middle; the surface forms a natural slope, and impurities slide towards the low point in the middle under the action of gravity, making it less likely for them to stay on the filter holes for a long time and cause blockage, thus achieving rapid separation of oil and impurities.

[0041] like Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, a first gear 19 is fixedly connected to one end of the first rotating shaft 18. A second gear 20 and a third gear 21 mesh with the outside of the first gear 19. The second gear 20 is fixedly installed inside the third gear 21. A fourth gear 22 meshes with the outer wall of the third gear 21. A second rotating shaft 23 is embedded inside the fourth gear 22. A third rotating shaft 25 is connected to one side of the second rotating shaft 23 through a belt drive mechanism 24. A water turbine blade 26 is fixedly installed on the outer wall of the third rotating shaft 25. The water turbine blade 26 is rotatably installed inside the suction pipe 14.

[0042] The tooth blocks 10 on the inner wall of the third gear 21 and the tooth blocks 10 on the outer wall of the second gear 20 are both distributed in a fan shape, and the two are staggered, with each having an area of ​​less than 180°. The third gear 21 and the second gear 20 alternately mesh with the first gear 19, driving it to reciprocate. During operation, the lubricating oil flows in the suction pipe 14, driving the water turbine blade 26 to rotate. The rotation of the water turbine blade 26 drives the third rotating shaft 25 to rotate. When the third rotating shaft 25 rotates, it drives the second rotating shaft 23 to rotate through the belt drive mechanism 24. The rotation of the second rotating shaft 23 drives the fourth gear 22 to rotate. When the fourth gear 22 rotates, it drives the third gear 21 to rotate. When the third gear 21 rotates, it drives the first gear 19 to rotate. When the first gear 19 rotates, it drives the first rotating shaft 18 and the auger 17 to rotate, so that the auger 17 transports the impurities at the bottom of the inner side of the cleaning cloth 6 to one side. When the third gear 21 rotates, it drives the second gear 20 to rotate. When the second gear 20 meshes with the first gear 19, it drives the first gear to reverse, thereby causing the auger 17 to reverse. The sludge and impurities adhering to the surface of the auger blades are peeled off under the action of inertial force and reverse shear force, realizing the self-cleaning of the auger blades and avoiding the decrease in conveying efficiency caused by blade scaling.

[0043] The inner diameter of the fourth gear 22 is smaller than that of the third gear 21, which reduces the rotational speed of the third gear 21, thereby causing the auger 17 to rotate at a low speed. When the auger 17 rotates at low speed, the centrifugal force is small, and the oil sludge and impurities adhering to the blade surface will not be thrown out and splashed. Instead, they are smoothly pushed along the blades to both sides of the cleaning cloth 6 for discharge, thus avoiding equipment pollution and secondary pollution caused by oil sludge splashing when rotating at high speed.

[0044] Low-speed rotation significantly reduces the relative motion speed and number of frictions between the auger 17 and the cleaning cloth 6, reducing the wear of the cleaning cloth 6 fibers, extending the service life of the cleaning cloth 6, and reducing the frequency of consumable replacement.

[0045] like Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, a cam 28 is provided on one side of the spiral auger 17. Both ends of the cam 28 are fixedly connected to a fourth rotating shaft 29. Both fourth rotating shafts 29 are rotatably installed in the maintenance box 5. Both fourth rotating shafts 29 are provided with coil springs 33 on their exterior. A fifth gear 30 is fixedly installed on the outer wall of the fourth rotating shaft 29. A rack plate 31 meshes with the bottom of the fifth gear 30. A guide plate 32 is provided on one side of the rack plate 31. The guide plate 32 is fixedly installed on the outer wall of the insert rod 7.

[0046] The rack plate 31 is inclined toward the side facing the guide plate 32; When the insert rod 7 slides in the groove 9, the insert rod 7 drives the guide plate 32 to move. When the guide plate 32 moves to one side of the rack plate 31, it contacts its inclined surface and presses the rack plate 31 to one side. The movement of the rack plate 31 drives the fifth gear 30 to rotate. When the fifth gear 30 rotates, it drives the cam 28 to rotate toward one side of the cleaning cloth 6 through the fourth rotating shaft 29. This causes the protrusion of the cam 28 to squeeze the cleaning cloth 6 toward one side of the spiral auger 17, thereby enhancing the scraping force of the spiral auger 17 blades on viscous impurities and improving the cleaning effect.

[0047] A vertically extending fixing block is provided at the end of the rack plate 31 near the rack plate 31, which can increase the contact time between the guide plate 32 and the rack plate 31, thereby keeping the cam 28 on one side to press the cleaning cloth 6, providing sufficient scraping time for the auger 17, and significantly improving the removal rate of highly viscous impurities. A guide plate 32 is installed on the outer wall of some of the insert rods 7, so that the cam 28 intermittently presses the cleaning cloth 6 toward one side of the spiral auger 17, reducing the continuous friction and wear between the cleaning cloth 6 and the spiral auger 17, thereby extending the service life of the cleaning cloth 6.

[0048] Working principle and usage process: During operation, the transmission gear 8 is driven by the motor to rotate. During the rotation, the transmission gear 8 meshes with the tooth block 10 and moves, causing the insertion rod 7 to slide in the slide groove 9. This causes the cleaning cloth 6 to make a continuous reciprocating motion around the outer wall of the guide rail 4 to clean the surface of the guide rail 4. Simultaneously, the negative pressure pump 13 is activated to draw lubricating oil from the maintenance box 5 through the suction pipe 14 into the connecting pipe 11, and finally sprays it out from the spray pipe 12 to one side of the cleaning cloth 6, so that the cleaning cloth 6 is soaked in lubricating oil. Then the cleaning cloth 6 moves upward and contacts the squeezing roller 15. The two squeezing rollers 15 squeeze the cleaning cloth 6 to squeeze out the excess lubricating oil. Then lubricating oil is applied to the surface of the guide rail 4. The cleaning cloth 6 wipes from the top to the bottom of the guide rail 4, and the impurities carried away will leave the surface of the guide rail 4 to the bottom inside. When the lubricating oil flows in the suction pipe 14, it drives the water turbine blade 26 to rotate. The rotation of the water turbine blade 26 drives the third rotating shaft 25 to rotate. When the third rotating shaft 25 rotates, it drives the second rotating shaft 23 to rotate through the belt drive mechanism 24. The rotation of the second rotating shaft 23 drives the fourth gear 22 to rotate. When the fourth gear 22 rotates, it drives the third gear 21 to rotate. When the third gear 21 rotates, it drives the first gear 19 to rotate. When the first gear 19 rotates, it drives the first rotating shaft 18 and the auger 17 to rotate, so that the auger 17 transports the impurities on the bottom of the inner side of the cleaning cloth 6 to one side. When the third gear 21 rotates, it drives the second gear 20 to rotate. When the second gear 20 meshes with the first gear 19, it drives it to reverse, so that the auger 17 reverses. The sludge impurities adhering to the surface of the spiral blades are peeled off under the action of inertial force and reverse shear force and discharged from the inner side of the cleaning cloth 6 to the top of the filter screen 27. The lubricating oil flows down for recycling after being filtered by the filter screen 27. When the insert rod 7 slides in the groove 9, the insert rod 7 drives the guide plate 32 to move. When the guide plate 32 moves to one side of the rack plate 31, it contacts its inclined surface and presses the rack plate 31 to one side. The movement of the rack plate 31 drives the fifth gear 30 to rotate. When the fifth gear 30 rotates, it drives the cam 28 to rotate toward one side of the cleaning cloth 6 through the fourth rotating shaft 29, so that the protrusion of the cam 28 squeezes the cleaning cloth 6 toward one side of the spiral auger 17, thereby enhancing the scraping force of the spiral auger 17 blades on viscous impurities. After the impurities on the bottom inner side of the cleaning cloth 6 are scraped off by the spiral auger 17, the cycle of "spraying lubricant - squeezing out excess lubricant - cleaning - slag removal" is repeated to continuously clean and maintain the entire surface of the guide rail 4.

[0049] 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 laser engraving machine for precision machining of metal products, comprising a main body (1) of the engraving equipment and a laser (2), wherein a slider (3) is installed on the outer wall of the laser (2), and a guide rail (4) is slidably installed inside the slider (3), and the guide rail (4) is fixedly installed inside the main body (1) of the engraving equipment; Its features are: The outer wall of the guide rail (4) is provided with a cleaning component for maintenance; The cleaning assembly includes a maintenance box (5) and a cleaning cloth (6) that are slidably mounted on the outer wall of the guide rail (4). The cleaning cloth (6) is slidably mounted in the maintenance box (5) by a drive assembly. The maintenance box (5) is fixedly mounted on one side of the slider (3). The maintenance box (5) is provided with a spray assembly for lubricating the guide rail (4). The spray assembly includes a negative pressure pump (13) installed in the maintenance box (5). The input end and output end of the negative pressure pump (13) are respectively connected to a suction pipe (14) and a connecting pipe (11). Spray pipes (12) are evenly arranged on the outer wall of the connecting pipe (11). The opening of the spray pipe (12) faces the cleaning cloth (6). A slag discharge assembly is installed at the bottom of the cleaning cloth (6).

2. The laser engraving machine for precision machining of metal products according to claim 1, characterized in that: The spray pipe (12) is located on the side of the cleaning cloth (6) away from the guide rail (4).

3. A laser engraving machine for precision machining of metal products according to claim 1, characterized in that: The drive assembly includes a rod (7), a transmission gear (8), a slide groove (9), and a tooth block (10). The rod (7) is evenly embedded in the cleaning cloth (6). Both ends of the rod (7) pass through the cleaning cloth (6) and are slidably installed in the slide groove (9). Both slide grooves (9) are opened in the maintenance box (5). The insert rod (7) is provided with a transmission gear (8) that is controlled to rotate by a motor. The outer wall of the transmission gear (8) is meshed with a tooth block (10), and the tooth block (10) is evenly installed in the slide groove (9).

4. A laser engraving machine for precision machining of metal products according to claim 1, characterized in that: Two squeezing rollers (15) are provided above the spray pipe (12), and the two squeezing rollers (15) are located on the inner and outer sides of the cleaning cloth (6), respectively.

5. A laser engraving machine for precision machining of metal products according to claim 1, characterized in that: The outer wall of the cleaning cloth (6) is provided with a plurality of limiting rollers (16), each of which is installed in the maintenance box (5).

6. A laser engraving machine for precision machining of metal products according to claim 1, characterized in that: The slag discharge assembly includes a spiral auger (17) disposed in a cleaning cloth (6). The spiral auger (17) is rotatably mounted in a maintenance box (5) via a first rotating shaft (18). A filter screen (27) is disposed below the spiral auger (17). The filter screen (27) is fixedly mounted in the maintenance box (5).

7. A laser engraving machine for precision machining of metal products according to claim 6, characterized in that: One end of the first rotating shaft (18) is fixedly connected to a first gear (19). The first gear (19) is meshed with a second gear (20) and a third gear (21). The second gear (20) is fixedly installed inside the third gear (21). The outer wall of the third gear (21) is meshed with a fourth gear (22). The fourth gear (22) is embedded in a second rotating shaft (23). One side of the second rotating shaft (23) is connected to a third rotating shaft (25) through a belt drive mechanism (24). The outer wall of the third rotating shaft (25) is fixedly installed with a water turbine blade (26). The water turbine blade (26) is rotatably installed inside the suction pipe (14).

8. A laser engraving machine for precision machining of metal products according to claim 6, characterized in that: A cam (28) is provided on one side of the spiral auger (17). Both ends of the cam (28) are fixedly connected to a fourth rotating shaft (29). Both fourth rotating shafts (29) are rotatably installed in the maintenance box (5). Both fourth rotating shafts (29) are provided with coil springs (33) on their exterior. The outer wall of the fourth rotating shaft (29) is fixedly installed with a fifth gear (30), and the bottom of the fifth gear (30) is meshed with a rack plate (31). A guide plate (32) is provided on one side of the rack plate (31), and the guide plate (32) is fixedly installed on the outer wall of the insert rod (7).

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