A laser cutting device for steel plates

Abstract

The application provides a steel plate laser cutting device, which comprises a placing bin, a top plate, a first guide rail, a first sliding block, a rotating plate, a laser cutting head, a pretreatment mechanism, a flatness polishing mechanism and a cooling assembly. The pretreatment mechanism comprises a second large gear, a sleeve, a polishing block, a circular ring and a negative pressure device. The flatness polishing mechanism comprises a polishing roller, a fourth driving motor, a fifth driving motor and a bolt. The cooling assembly comprises a high-pressure air pump, an air pipe, a branch pipe, an air nozzle and an electromagnetic valve. The first driving motor and the second driving motor are used to realize long plate curve cutting. The sleeve of the pretreatment mechanism drives the polishing block to complete pre-cutting deoxidization and timely slag removal after cutting. The negative pressure device recycles dust. The bolt adjusts the distance between the polishing rollers. The fourth and fifth driving motors drive the polishing rollers to realize full plate surface leveling. The cooling assembly opens the electromagnetic valve according to the working condition to realize precise cooling. The device integrates multiple processes, and solves the problems of low efficiency, poor precision and serious pollution in traditional processing.

Description

Technical Field

[0001] This invention relates to the field of steel plate production and processing technology, specifically to a steel plate laser cutting device. Background Technology

[0002] In industrial production, steel plate cutting is widely used. However, traditional processing methods have obvious shortcomings. First, before cutting, the oxide layer and protrusions on the surface of the steel plate need to be pre-treated manually, which is time-consuming, labor-intensive, and the treatment effect is uneven. This can easily lead to laser focusing deviation, resulting in problems such as incomplete cutting and many burrs on the cut. After cutting, the weld slag cools and hardens, requiring a separate cleaning process, which increases labor costs and may also scratch the surface of the steel plate.

[0003] Secondly, cutting and subsequent flatness grinding are mostly operated by independent equipment, requiring repeated transfer of workpieces. This is not only inefficient but also prone to causing accuracy deviations due to collisions during transfer. At the same time, there is no centralized collection device for dust and debris generated during processing, which pollutes the workshop environment and endangers the health of operators. Friction heat generated during grinding can easily cause steel plate deformation, affecting product quality. Furthermore, the lack of targeted cooling measures further limits processing accuracy and efficiency. These problems need to be solved through integrated and automated equipment to improve the overall performance of steel plate processing. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a steel plate laser cutting device that solves the problems of inefficient and uneven pretreatment and slag removal, as well as the heat deformation during grinding and the lack of targeted cooling.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a steel plate laser cutting device, comprising: a placement chamber, a placement plate fixedly connected to the inner wall of the placement chamber, a top plate fixedly connected to the upper end of the placement chamber via a support rod, a first guide rail fixedly connected laterally to the bottom center of the top plate, a first slider slidably connected to the inner wall of the first guide rail, a rotating rod rotatably connected to the inner wall of the first slider, a first large gear fixedly connected to the bottom of the rotating rod through the first slider, a first electric telescopic rod fixedly connected to the bottom of the first large gear, a rotating plate fixedly connected to the bottom of the first electric telescopic rod, a fixing rod fixedly connected to the inner wall of the rotating plate away from the first electric telescopic rod, a laser cutting head fixedly connected to the bottom of the fixing rod, a pre-processing mechanism provided on the outer side of the laser cutting head, and a flatness grinding mechanism provided inside the placement chamber;

[0008] The pretreatment mechanism includes:

[0009] The inner wall of the second large gear is rotatably connected to the fixed rod via the second slider;

[0010] A sleeve, the bottom of which is fixedly connected to the second large gear, has a threaded groove on its inner wall and a slot at its bottom, and a grinding block is inserted into the inner wall of the slot.

[0011] A circular ring, the inner wall of which is slidably connected to the sleeve;

[0012] The surface smoothing and polishing mechanism includes:

[0013] Grinding assembly, located at the top of the placement plate;

[0014] The cooling component is located on the right side of the placement chamber.

[0015] Preferably, a first drive motor is fixedly connected to the rear end of the first guide rail, a first threaded rod is fixedly connected to the output end of the first drive motor, the front end of the first threaded rod passes through the first guide rail and extends into the interior, and the outer surface of the first threaded rod is threadedly connected to the first slider.

[0016] Preferably, a second drive motor is fixedly connected to the rear end of the first slider, and a first pinion is fixedly connected to the bottom of the second drive motor, with the outer surface of the first pinion meshing with the first large gear.

[0017] Preferably, the first electric telescopic rod has first guide rods symmetrically arranged on both sides, and the outer surface of the first guide rods is slidably connected to the rotating plate.

[0018] Preferably, a channel is provided at the bottom outer side of the rotating rod near the top threaded groove of the sleeve. The number of channels is multiple and they are distributed in a ring around the outside of the rotating rod. The rear end of the channel extends into the interior of the rotating rod. A negative pressure pipe is provided inside the rotating rod. The lower end of the negative pressure pipe is connected to the channel, and the upper end of the negative pressure pipe is connected to a negative pressure device. The bottom of the negative pressure device is fixedly connected to the rotating plate.

[0019] Preferably, a third drive motor is fixedly connected to the bottom of the rotating plate, and a second pinion is fixedly connected to the output end of the third drive motor. The outer surface of the second pinion meshes with the second large gear.

[0020] Preferably: a second electric telescopic rod is fixedly connected to the bottom of the second large gear. The second electric telescopic rod is located on the outside of the sleeve. The bottom telescopic end of the second electric telescopic rod is fixedly connected to the ring. There are four slots distributed in a ring at the bottom of the sleeve. A first sliding groove is provided on the outside of the sleeve. The bottom of the first sliding groove communicates with the slot. There are four first sliding grooves, each corresponding to a slot. A third slider is slidably connected to the inner wall of each of the four first sliding grooves. A pressing plate is provided between the top inner wall of the slot and the grinding block. The outer side of the pressing plate is fixedly connected to the third slider. The upper ends of the four third sliders are in contact with the ring.

[0021] Preferably, the polishing assembly includes:

[0022] The cover plate has its outer surface slidably connected to the inner wall of the storage compartment.

[0023] The second chute is located on the inner walls of the left and right sides of the placement chamber;

[0024] The fourth slider is located inside the second groove;

[0025] The fourth drive motor is located at the front end of the placement chamber. Its output end passes through the placement chamber and extends into the interior, and is fixedly connected to the second threaded rod. The outer surface of the second threaded rod is threadedly connected to the fourth slider.

[0026] The second guide rail is located at the upper end of the fourth slider away from the second slide groove;

[0027] The fifth slider is located inside the second guide rail;

[0028] The bolt has its outer surface threaded to the top of the second guide rail, and its lower end rotatably connected to the fifth slider.

[0029] The fifth drive motor is located at the rear end of the fifth slider, and its output end passes through the fifth slider and is fixedly connected to a rotating shaft.

[0030] The grinding roller has its inner wall fixedly connected to the rotating shaft.

[0031] Preferably, the cooling component includes:

[0032] A high-pressure air pump is located at the rear end of the placement chamber;

[0033] The trachea is located on the inner wall of the right side of the placement chamber, and its rear end penetrates the placement chamber and is connected to the high-pressure air pump.

[0034] The bronchus is located on the side of the trachea facing the placement plate and is inclined towards the placement plate.

[0035] Solenoid valve, located at the front end of the branch pipe;

[0036] Air nozzle, located at the front end of the solenoid valve;

[0037] The number of branch pipes is multiple and they are evenly distributed. The number of solenoid valves and air nozzles is multiple and they correspond one-to-one with the branch pipes.

[0038] (III) Beneficial Effects

[0039] This invention provides a laser cutting device for steel plates. It has the following beneficial effects:

[0040] This steel plate laser cutting device mainly achieves efficient and uniform slag removal and grinding and cooling to prevent deformation through a pretreatment mechanism and a flatness grinding mechanism.

[0041] The pretreatment mechanism mainly consists of a second large gear, a sleeve, a grinding block, a ring, and a negative pressure device. During operation, the sleeve rotates, driving the grinding block to move synchronously. The front grinding block completes the deoxidation and leveling treatment of the steel plate surface before cutting. The threaded groove on the inner wall of the sleeve guides the dust to the channel, where it is collected and recovered through the negative pressure pipe and negative pressure device. At the same time, it helps stabilize the airflow in the cutting area, providing a clean and flat processing base surface for laser cutting.

[0042] The flatness grinding mechanism mainly consists of grinding components and a matching adjustment structure. During operation, the fifth drive motor drives the grinding roller to rotate, while the fourth drive motor drives the second threaded rod to rotate, causing the fourth slider to move at a constant speed along the second slide groove. This achieves flatness grinding of the entire steel plate surface, correcting deformation and residual protrusions on the cut surface. In conjunction with the cooling component, a high-pressure air pump cools the grinding area through branch pipes and air nozzles, with the corresponding solenoid valves fully open, preventing frictional heat from causing steel plate deformation and ultimately ensuring the flatness accuracy of the processed steel plate.

[0043] The rear end of the grinding block can promptly clean up uncooled welding slag after cutting, avoiding cleaning difficulties caused by cooling during the operation of the flatness grinding mechanism. When the grinding block is working, the air nozzle corresponding to the grinding position is controlled by a corresponding solenoid valve to cool down the grinding block and the grinding position. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram illustrating the cutting position adjustment of the present invention;

[0046] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0047] Figure 4 This is a schematic diagram illustrating the optimization of the laser cutting environment according to the present invention;

[0048] Figure 5 This is a schematic diagram of the grinding block installation and pushing structure of the present invention;

[0049] Figure 6 This is a schematic diagram of the flatness grinding mechanism of the present invention;

[0050] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0051] Figure 8 This is a schematic diagram of the grinding roller height adjustment according to the present invention.

[0052] The components include: 1. Placement compartment; 2. Cover plate; 3. Top plate; 4. Support rod; 5. First guide rail; 6. First drive motor; 7. First threaded rod; 8. First slider; 9. Rotating plate; 10. Negative pressure device; 11. Rotating rod; 12. Second drive motor; 13. First pinion; 14. First large gear; 15. First electric telescopic rod; 16. First guide rod; 17. Third drive motor; 18. Second pinion; 19. Fixed rod; 20. Negative pressure pipe; 21. Second large gear; 22. Second slider; 23. Laser cutting head; 24. Sleeve; 25. Channel. 26. Threaded groove; 27. Second electric telescopic rod; 28. Ring; 29. ​​Third slider; 30. Extrusion plate; 31. Slot; 32. Grinding block; 33. First slide groove; 34. Fourth drive motor; 35. High-pressure air pump; 36. Second slide groove; 37. Second threaded rod; 38. Fourth slider; 39. Air pipe; 40. Placement plate; 41. Branch pipe; 42. Solenoid valve; 43. Air nozzle; 44. Second guide rail; 45. Fifth drive motor; 46. Fifth slider; 47. Bolt; 48. Grinding roller; 49. Rotating shaft; 50. Grinding assembly; 51. Cooling assembly. Detailed Implementation

[0053] 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.

[0054] Example 1

[0055] like Figure 1-8As shown, this embodiment of the invention provides a steel plate laser cutting device, including a placement chamber 1, a placement plate 40 fixedly connected to the inner wall of the placement chamber 1, a top plate 3 fixedly connected to the upper end of the placement chamber 1 via a support rod 4, a first guide rail 5 fixedly connected laterally to the bottom center of the top plate 3, a first slider 8 slidably connected to the inner wall of the first guide rail 5, a rotating rod 11 rotatably connected to the inner wall of the first slider 8, a first large gear 14 fixedly connected to the bottom of the rotating rod 11 through the first slider 8, a first electric telescopic rod 15 fixedly connected to the bottom of the first large gear 14, a rotating plate 9 fixedly connected to the bottom of the first electric telescopic rod 15, a fixing rod 19 fixedly connected to the inner wall of the rotating plate 9 away from the first electric telescopic rod 15, a laser cutting head 23 fixedly connected to the bottom of the fixing rod 19, a pre-processing mechanism provided on the outer side of the laser cutting head 23, and a flatness grinding mechanism provided inside the placement chamber 1.

[0056] The rear end of the first guide rail 5 is fixedly connected to the first drive motor 6. The output end of the first drive motor 6 is fixedly connected to the first threaded rod 7. The front end of the first threaded rod 7 passes through the first guide rail 5 and extends into the interior. The outer surface of the first threaded rod 7 is threadedly connected to the first slider 8. The rear end of the first slider 8 is fixedly connected to the second drive motor 12. The bottom of the second drive motor 12 is fixedly connected to the first pinion 13. The outer surface of the first pinion 13 is meshed with the first gear 14. The two sides of the first electric telescopic rod 15 are symmetrically provided with first guide rods 16. The outer surface of the first guide rod 16 is slidably connected to the rotating plate 9.

[0057] The first drive motor 6 is started, and its output end drives the first threaded rod 7 to rotate, causing the first slider 8 to move back and forth along the first guide rail 5. At the same time, the second drive motor 12 is started, and through the meshing transmission of the first small gear 13 and the first large gear 14, the rotating plate 9 is driven to rotate regularly to adjust the angle. In conjunction with the first electric telescopic rod 15 between the first large gear 14 and the rotating plate 9, the cutting distance is precisely adjusted. Through the cooperation of the two, the long plate curve cutting can be completed quickly.

[0058] The pretreatment facility includes:

[0059] The inner wall of the second large gear 21 is rotatably connected to the fixed rod 19 via the second slider 22.

[0060] Sleeve 24, the bottom of sleeve 24 is fixedly connected to the second large gear 21, its inner wall is provided with threaded groove 26, its bottom is provided with slot 31, and a grinding block 32 is inserted into the inner wall of slot 31.

[0061] The inner wall of the ring 28 is slidably connected to the sleeve 24.

[0062] A channel 25 is provided at the bottom outer side of the threaded groove 26 at the top of the sleeve 24 near the rotating rod 11. There are multiple channels 25 distributed in a ring on the outer side of the rotating rod 11. The rear end of the channel 25 extends into the interior of the rotating rod 11. A negative pressure pipe 20 is provided inside the rotating rod 11. The lower end of the negative pressure pipe 20 is connected to the channel 25. The upper end of the negative pressure pipe 20 is connected to a negative pressure device 10. The bottom of the negative pressure device 10 is fixedly connected to the rotating plate 9. A third drive motor 17 is fixedly connected to the bottom of the rotating plate 9. A second pinion 18 is fixedly connected to the output end of the third drive motor 17. The outer surface of the second pinion 18 meshes with the second large gear 21.

[0063] The bottom of the second large gear 21 is fixedly connected to a second electric telescopic rod 27, which is located on the outside of the sleeve 24. The bottom telescopic end of the second electric telescopic rod 27 is fixedly connected to the ring 28. There are four slots 31, which are distributed in a ring at the bottom of the sleeve 24. A first sliding groove 33 is provided on the outside of the sleeve 24. The bottom of the first sliding groove 33 is connected to the slot 31. There are four first sliding grooves 33, which correspond one-to-one with the slots 31. The inner walls of the four first sliding grooves 33 are slidably connected to third sliders 29. A pressing plate 30 is provided between the top inner wall of the slot 31 and the grinding block 32. The outer side of the pressing plate 30 is fixedly connected to the third sliders 29. The upper ends of the four third sliders 29 are in contact with the ring 28.

[0064] During the cutting process, the third drive motor 17 is started, and the second small gear 18 meshes with the second large gear 21. With the sliding connection between the second large gear 21 and the second slider 22, the bottom fixed sleeve 24 is driven to rotate stably. The grinding block 32 inserted into the slot 31 at the bottom of the sleeve 24 serves two purposes: firstly, to remove oxidation and level the base surface of the steel plate before cutting; and secondly, to grind the weld slag that has not been completely cooled immediately after cutting, so as to avoid the weld slag being difficult to clean after hardening. The grinding block 32 can be replaced with a corresponding material according to different steel plate materials to improve grinding efficiency.

[0065] The threaded groove 26 on the inner wall of the sleeve 24 generates a guiding effect as the sleeve 24 rotates, guiding the fine dust generated by cutting and grinding to the annular channel 25 at the upper end. The channel 25 is connected to the negative pressure pipe 20, and the dust and debris are quickly adsorbed and recovered by the negative pressure device 10. When the grinding block 32 is working, the second electric telescopic rod 27 drives the ring 28 to move up and down, which works with the third slider 29 and the extrusion plate 30 to achieve adaptive adjustment. The pressure sensor inside the extrusion plate 30 provides real-time feedback of pressure data to ensure that the grinding force is appropriate.

[0066] The surface smoothing and polishing mechanism includes:

[0067] Grinding component 50 is located at the upper end of placement plate 40.

[0068] Cooling component 51 is located on the right side of placement chamber 1.

[0069] Example 2

[0070] like Figure 1-8 As shown, this embodiment of the invention provides a steel plate laser cutting device, including a placement chamber 1, a placement plate 40 fixedly connected to the inner wall of the placement chamber 1, a top plate 3 fixedly connected to the upper end of the placement chamber 1 via a support rod 4, a first guide rail 5 fixedly connected laterally to the bottom center of the top plate 3, a first slider 8 slidably connected to the inner wall of the first guide rail 5, a rotating rod 11 rotatably connected to the inner wall of the first slider 8, a first large gear 14 fixedly connected to the bottom of the rotating rod 11 through the first slider 8, a first electric telescopic rod 15 fixedly connected to the bottom of the first large gear 14, a rotating plate 9 fixedly connected to the bottom of the first electric telescopic rod 15, a fixing rod 19 fixedly connected to the inner wall of the rotating plate 9 away from the first electric telescopic rod 15, a laser cutting head 23 fixedly connected to the bottom of the fixing rod 19, a pre-processing mechanism provided on the outer side of the laser cutting head 23, and a flatness grinding mechanism provided inside the placement chamber 1.

[0071] The rear end of the first guide rail 5 is fixedly connected to the first drive motor 6. The output end of the first drive motor 6 is fixedly connected to the first threaded rod 7. The front end of the first threaded rod 7 passes through the first guide rail 5 and extends into the interior. The outer surface of the first threaded rod 7 is threadedly connected to the first slider 8. The rear end of the first slider 8 is fixedly connected to the second drive motor 12. The bottom of the second drive motor 12 is fixedly connected to the first pinion 13. The outer surface of the first pinion 13 is meshed with the first gear 14. The two sides of the first electric telescopic rod 15 are symmetrically provided with first guide rods 16. The outer surface of the first guide rod 16 is slidably connected to the rotating plate 9.

[0072] The first drive motor 6 is started, and its output end drives the first threaded rod 7 to rotate, causing the first slider 8 to move back and forth along the first guide rail 5. At the same time, the second drive motor 12 is started, and through the meshing transmission of the first small gear 13 and the first large gear 14, the rotating plate 9 is driven to rotate regularly to adjust the angle. In conjunction with the first electric telescopic rod 15 between the first large gear 14 and the rotating plate 9, the cutting distance is precisely adjusted. Through the cooperation of the two, the long plate curve cutting can be completed quickly.

[0073] The pretreatment facility includes:

[0074] The inner wall of the second large gear 21 is rotatably connected to the fixed rod 19 via the second slider 22.

[0075] Sleeve 24, the bottom of sleeve 24 is fixedly connected to the second large gear 21, its inner wall is provided with threaded groove 26, its bottom is provided with slot 31, and a grinding block 32 is inserted into the inner wall of slot 31.

[0076] The inner wall of the ring 28 is slidably connected to the sleeve 24.

[0077] The surface smoothing and polishing mechanism includes:

[0078] Grinding component 50 is located at the upper end of placement plate 40.

[0079] The polishing component 50 includes:

[0080] Cover plate 2, the outer surface of cover plate 2 is slidably connected to the inner wall of placement chamber 1.

[0081] The second chute 36 is located on the inner walls of the left and right sides of the placement chamber 1.

[0082] The fourth slider 38 is located inside the second groove 36.

[0083] The fourth drive motor 34 is located at the front end of the placement chamber 1. Its output end passes through the placement chamber 1 and extends into the interior, and is fixedly connected to the second threaded rod 37. The outer surface of the second threaded rod 37 is threadedly connected to the fourth slider 38.

[0084] The second guide rail 44 is located at the upper end of the fourth slider 38 away from the second slide groove 36.

[0085] The fifth slider 46 is located inside the second guide rail 44.

[0086] Bolt 47, the outer surface of bolt 47 is threaded to the top of the second guide rail 44, and its lower end is rotatably connected to the fifth slider 46.

[0087] The fifth drive motor 45 is located at the rear end of the fifth slider 46, and its output end passes through the fifth slider 46 and is fixedly connected to the rotating shaft 49.

[0088] Grinding roller 48, the inner wall of grinding roller 48 is fixedly connected to rotating shaft 49.

[0089] Cooling component 51 is located on the right side of placement chamber 1.

[0090] Cooling component 51 includes:

[0091] High-pressure air pump 35 is located at the rear end of placement chamber 1.

[0092] The air tube 39 is located on the inner wall of the right side of the placement chamber 1, and its rear end penetrates the placement chamber 1 and is connected to the high-pressure air pump 35.

[0093] Branch tube 41 is located on the side of trachea 39 facing placement plate 40 and is inclined towards placement plate 40.

[0094] Solenoid valve 42 is located at the front end of branch pipe 41.

[0095] Air nozzle 43 is located at the front end of solenoid valve 42.

[0096] There are multiple branch pipes 41, which are evenly distributed. There are multiple solenoid valves 42 and air nozzles 43, which correspond one-to-one with the branch pipes 41.

[0097] When performing overall flatness grinding, the height of the fifth slider 46 is adjusted by manually rotating the bolt 47, thereby precisely controlling the distance between the grinding roller 48 and the steel plate. Then, the fifth drive motor 45 is started to drive the grinding roller 48 to rotate. At the same time, the fourth drive motor 34 drives the second threaded rod 37 to rotate, so that the fourth slider 38 connected to the grinding roller 48 moves at a constant speed along the second slide groove 36 to achieve full-surface grinding. During grinding, the cover plate 2 is covered to prevent dust pollution. The high-pressure air pump 35 is started simultaneously, and gas is delivered through the air pipe 39. The gas is blown onto the steel plate through the inclined branch pipe 41 and the air nozzle 43 to achieve cooling. Each branch pipe 41 and air nozzle 43 in the cooling component 51 is equipped with a solenoid valve 42. During flatness grinding, all solenoid valves 42 are opened. During cutting, only the solenoid valves 42 near the working range of the grinding block 32 are opened, which plays a targeted cooling role and ensures the stability of the processing process and the quality of the workpiece.

[0098] Working principle: Place the steel plate to be cut on the placement plate 40 and align it with the positioning reference. Start the first drive motor 6, and its output end drives the first threaded rod 7 to rotate, causing the first slider 8 to move back and forth along the first guide rail 5. At the same time, start the second drive motor 12, and through the meshing transmission of the first small gear 13 and the first large gear 14, drive the rotating plate 9 to rotate back and forth regularly to adjust the angle. With the cooperation of the first electric telescopic rod 15 between the first large gear 14 and the rotating plate 9, the cutting distance can be precisely adjusted. Through the cooperation of the two, the long plate curve cutting can be completed quickly.

[0099] During the cutting process, the third drive motor 17 is started, and the second small gear 18 meshes with the second large gear 21. With the sliding connection between the second large gear 21 and the second slider 22, the bottom fixed sleeve 24 is driven to rotate stably. The grinding block 32 inserted into the slot 31 at the bottom of the sleeve 24 serves two purposes: firstly, to remove oxidation and level the base surface of the steel plate before cutting; and secondly, to grind the weld slag that has not been completely cooled immediately after cutting, so as to avoid the weld slag being difficult to clean after hardening. The grinding block 32 can be replaced with a corresponding material according to different steel plate materials to improve grinding efficiency.

[0100] The threaded groove 26 on the inner wall of the sleeve 24 generates a guiding effect as the sleeve 24 rotates, guiding the fine dust generated by cutting and grinding to the annular channel 25 at the upper end. The channel 25 is connected to the negative pressure pipe 20, and the dust and debris are quickly adsorbed and recovered by the negative pressure device 10. When the grinding block 32 is working, the second electric telescopic rod 27 drives the ring 28 to move up and down, which works with the third slider 29 and the extrusion plate 30 to achieve adaptive adjustment. The pressure sensor inside the extrusion plate 30 provides real-time feedback of pressure data to ensure that the grinding force is appropriate.

[0101] When performing overall flatness grinding, the height of the fifth slider 46 is adjusted by manually rotating the bolt 47, thereby precisely controlling the distance between the grinding roller 48 and the steel plate. Then, the fifth drive motor 45 is started to drive the grinding roller 48 to rotate. At the same time, the fourth drive motor 34 drives the second threaded rod 37 to rotate, so that the fourth slider 38 connected to the grinding roller 48 moves at a constant speed along the second slide groove 36 to achieve full-surface grinding. During grinding, the cover plate 2 is covered to prevent dust pollution. The high-pressure air pump 35 is started simultaneously, and gas is delivered through the air pipe 39. The gas is blown onto the steel plate through the inclined branch pipe 41 and the air nozzle 43 to achieve cooling. Each branch pipe 41 and air nozzle 43 in the cooling component 51 is equipped with a solenoid valve 42. During flatness grinding, all solenoid valves 42 are opened. During cutting, only the solenoid valves 42 near the working range of the grinding block 32 are opened, which plays a targeted cooling role and ensures the stability of the processing process and the quality of the workpiece.

[0102] 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 cutting apparatus for a steel sheet, characterized by comprising: include: The placement chamber (1) has a placement plate (40) fixedly connected to its inner wall. The upper end of the placement chamber (1) is fixedly connected to a top plate (3) via a support rod (4). The bottom center of the top plate (3) is horizontally fixedly connected to a first guide rail (5). The inner wall of the first guide rail (5) is slidably connected to a first slider (8). The inner wall of the first slider (8) is rotatably connected to a rotating rod (11). The bottom of the rotating rod (11) passes through the first slider (8) and is fixedly connected to a first large gear (14). The bottom of the first large gear (14) is fixedly connected to a first electric telescopic rod (15). The bottom of the first electric telescopic rod (15) is fixedly connected to a rotating plate (9). The inner wall of the rotating plate (9) away from the first electric telescopic rod (15) is fixedly connected to a fixing rod (19). The bottom of the fixing rod (19) is fixedly connected to a laser cutting head (23). A pre-processing mechanism is provided on the outside of the laser cutting head (23). A flatness grinding mechanism is provided inside the placement chamber (1). The pretreatment mechanism includes: The inner wall of the second large gear (21) is rotatably connected to the fixed rod (19) through the second slider (22); Sleeve (24), the bottom of sleeve (24) is fixedly connected to the second large gear (21), its inner wall is provided with a threaded groove (26), and its bottom is provided with a slot (31), and a grinding block (32) is inserted into the inner wall of the slot (31). The inner wall of the ring (28) is slidably connected to the sleeve (24); The bottom of the second large gear (21) is fixedly connected to a second electric telescopic rod (27). The second electric telescopic rod (27) is located on the outside of the sleeve (24). The bottom telescopic end of the second electric telescopic rod (27) is fixedly connected to the ring (28). There are four slots (31) and they are distributed in a ring at the bottom of the sleeve (24). The outside of the sleeve (24) is provided with a first sliding groove (33). The bottom of the first sliding groove (33) is connected to the slot (31). There are four first sliding grooves (33) and they correspond one-to-one with the slots (31). The inner walls of the four first sliding grooves (33) are slidably connected with third sliders (29). The top inner wall of the slot (31) is provided with a pressing plate (30) between it and the grinding block (32). The outer side of the pressing plate (30) is fixedly connected to the third slider (29). The upper ends of the four third sliders (29) are in contact with the ring (28). The surface smoothing and polishing mechanism includes: A polishing assembly (50) is located at the upper end of the placement plate (40); Cooling component (51) is located on the right side of the placement chamber (1); The rotating rod (11) has a channel (25) at the bottom of the outer side of the threaded groove (26) at the top of the sleeve (24). There are multiple channels (25) and they are distributed in a ring on the outer side of the rotating rod (11). The rear end of the channel (25) extends into the interior of the rotating rod (11). A negative pressure pipe (20) is provided inside the rotating rod (11). The lower end of the negative pressure pipe (20) is connected to the channel (25). The upper end of the negative pressure pipe (20) is connected to a negative pressure device (10). The bottom of the negative pressure device (10) is fixedly connected to the rotating plate (9).

2. A laser cutting device for a steel sheet as claimed in claim 1, characterized in that: The first guide rail (5) is fixedly connected to the rear end of the first drive motor (6), and the output end of the first drive motor (6) is fixedly connected to the first threaded rod (7). The front end of the first threaded rod (7) passes through the first guide rail (5) and extends into the interior. The outer surface of the first threaded rod (7) is threadedly connected to the first slider (8).

3. The laser cutting apparatus for a steel sheet according to claim 1, wherein: The rear end of the first slider (8) is fixedly connected to a second drive motor (12), and the bottom of the second drive motor (12) is fixedly connected to a first pinion (13). The outer surface of the first pinion (13) meshes with the first large gear (14).

4. The laser cutting apparatus for a steel sheet according to claim 1, wherein: The first electric telescopic rod (15) has a first guide rod (16) symmetrically arranged on both sides, and the outer surface of the first guide rod (16) is slidably connected to the rotating plate (9).

5. The laser cutting apparatus for a steel sheet according to claim 1, wherein: The bottom of the rotating plate (9) is fixedly connected to a third drive motor (17), and the output end of the third drive motor (17) is fixedly connected to a second pinion (18). The outer surface of the second pinion (18) meshes with the second large gear (21).

6. The laser cutting apparatus of claim 1, wherein: The polishing assembly (50) includes: The outer surface of the cover plate (2) is slidably connected to the inner wall of the storage compartment (1); The second chute (36) is located on the inner walls of the left and right sides of the placement chamber (1); The fourth slider (38) is located inside the second groove (36); The fourth drive motor (34) is located at the front end of the placement chamber (1). Its output end passes through the placement chamber (1) and extends into the interior, and is fixedly connected to the second threaded rod (37). The outer surface of the second threaded rod (37) is threadedly connected to the fourth slider (38). The second guide rail (44) is located at the upper end of the fourth slider (38) away from the second slide groove (36); The fifth slider (46) is located inside the second guide rail (44); Bolt (47), the outer surface of bolt (47) is threaded to the top of the second guide rail (44), and its lower end is rotatably connected to the fifth slider (46); The fifth drive motor (45) is located at the rear end of the fifth slider (46), and its output end passes through the fifth slider (46) and is fixedly connected to a rotating shaft (49). Grinding roller (48), the inner wall of grinding roller (48) is fixedly connected to rotating shaft (49).

7. The laser cutting apparatus of claim 1, wherein: The cooling component (51) includes: High-pressure air pump (35) is located at the rear end of the placement chamber (1); The air tube (39) is located on the inner wall of the right side of the placement chamber (1), and its rear end penetrates the placement chamber (1) and is connected to the high-pressure air pump (35). Branch tube (41), the branch tube (41) is located on the side of the trachea (39) facing the placement plate (40), and is inclined towards the placement plate (40). Solenoid valve (42) is located at the front end of branch pipe (41); Air nozzle (43), the air nozzle (43) is located at the front end of the solenoid valve (42); The number of branch pipes (41) is multiple and they are evenly distributed. The number of solenoid valves (42) and air nozzles (43) is multiple and they correspond one-to-one with the branch pipes (41).

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