Non-contact surface dust removal device for laser cutting and dust removal method thereof

Abstract

The application discloses a non-contact surface dust removal equipment for laser cutting, which comprises a pole piece upper dust removal system, a pole piece lower dust removal support system and a guide passing roller, the guide passing roller is located between the pole piece upper dust removal system and the pole piece lower dust removal support system; a porous gas suspension plate and a gas blowing connector are arranged in the pole piece lower dust removal support system, wherein compressed air of the gas blowing connector passes through the porous gas suspension plate to form air damping; the pole piece upper dust removal system comprises a gas blowing assembly and a dust removal cavity assembly; air flow blown by the gas blowing assembly and the porous gas suspension plate form air damping to generate balance. The porous gas suspension plate and the gas blowing connector are arranged below the pole piece, compressed air of the gas blowing connector passes through the porous gas suspension plate to form air damping, and the air damping can form a supporting and buffering effect on the pole piece; balance of air blowing above the pole piece and air suspension force below the pole piece can not only achieve the dust removal purpose, but also prevent the pole piece from shaking to cause the laser to lose focus and affect the cutting quality of the pole piece.

Description

Technical Field

[0001] This invention relates to the field of lithium battery electrode dust removal technology, specifically to a non-contact surface dust removal device and method for laser cutting. Background Technology

[0002] Laser cutting of electrode tabs generates a large amount of dust. Poor dust control is a major headache for many lithium battery manufacturers, as dust is considered one of the three major hazards in lithium battery manufacturing. Inadequate dust control can lead to high short-circuit rates, high self-discharge rates, and significant safety risks in the modules. Furthermore, the high cutting temperature of lasers can cause powdery dust to disperse and potentially damage the laser galvanometer.

[0003] Horizontal movement of the electrode is called flat cutting, and vertical movement is called vertical cutting. Dust from flat cutting falls onto the electrode, while dust from vertical cutting falls due to gravity. Currently, the mainstream method for flat cutting involves placing a cutting plate under the electrode for support. However, because the electrode slides and rubs against the cutting plate, the cutting plate becomes heavily contaminated and requires frequent cleaning, increasing labor time. Furthermore, the electrode sliding on the cutting plate poses a risk of scratching it.

[0004] For example, in the existing patent document with announcement number CN216758930U, entitled "An Electrode Sheet Cutting Device for Lithium Battery Processing," it is specifically disclosed that "it includes a base plate, a driving assembly mounted on the surface of the base plate, an adjustment assembly and a limiting assembly respectively mounted on the top of the base plate, a frame mounted on the surface of the adjustment assembly, a first roller movably connected to the inner wall of the frame via bearings, a frame welded to the rear side of the top of the base plate, a cutting assembly mounted on the surface of the frame, and the driving assembly including a second roller, both ends of the second roller being movably embedded in the surface of the base plate via bearings, and the left end of the second roller extending to the left side of the base plate and fixedly connected to a synchronous disc. This utility model has the advantages of conveying, flattening, cutting, and guiding and limiting." From the above description, it can be seen that this patent directly places the electrode sheet on multiple first rollers (equivalent to a cutting base plate). When the electrode sheet is being cut, the area around the first rollers becomes heavily contaminated and requires frequent cleaning, which is time-consuming and labor-intensive. At the same time, there is a risk of scratching the electrode sheet when it slides on the first rollers (cutting base plate).

[0005] Therefore, there is an urgent need to develop a method that can effectively remove dust while eliminating the need for a cutting base plate. However, if the cutting base plate is eliminated, the lack of support below the cutting area will cause the electrode to be disturbed by positive or negative airflow, resulting in vibration and laser defocusing, ultimately leading to failure to cut and causing cascading damage. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to solve the problem of laser defocusing caused by the disturbance of positive or negative pressure airflow on the electrode due to the removal of the electrode cutting base plate.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A non-contact surface dust removal device for laser cutting includes an upper electrode dust removal system, a lower electrode dust removal support system, and a guide roller, wherein the guide roller is located between the upper electrode dust removal system and the lower electrode dust removal support system.

[0009] The electrode under dust removal support system is equipped with a porous air suspension plate and an air blowing connector, wherein compressed air from the air blowing connector passes through the porous air suspension plate to form air damping.

[0010] The dust removal system on the electrode includes an air blowing component and a dust removal chamber component. The air blowing component blows air to the dust removal chamber component and then sucks it out by negative pressure. The air blowing component and the porous air suspension plate form air damping to achieve balance.

[0011] This invention achieves non-contact dust removal by setting an upper dust removal system and a lower dust removal support system above and below the electrode sheet, respectively, and using guide rollers for transmission. The structure is simple, reduces space occupation, and is easy to install. At the same time, this invention sets a porous air suspension plate and an air blowing joint below the electrode sheet. The compressed air from the air blowing joint passes through the porous air suspension plate and forms air damping, which can support and buffer the electrode sheet. At the same time, the balance between the air blowing above the electrode sheet and the suspension force below the electrode sheet can not only achieve the purpose of dust removal, but also prevent the electrode sheet from shaking and causing the laser to lose focus, thus affecting the cutting quality of the electrode sheet.

[0012] As a further aspect of the present invention: the electrode under dust removal support system includes a core cavity, a horizontal adjustment component for adjusting the Y-axis direction is installed at the bottom of the core cavity, and a vertical adjustment component for adjusting the Z-axis direction is also installed at the bottom of the core cavity.

[0013] As a further embodiment of the present invention: an air blowing groove is provided on the rear side of the core cavity, the dust collection chamber is installed on the front side of the core cavity and the dust collection chamber and the core cavity are connected, and the dust collection drawer is slidably installed in the dust collection chamber, and rollers are provided on both sides of the top of the core cavity.

[0014] The core cavity includes a slope inside the cavity and a laser trajectory opening at the top of the cavity, and the height of the slope decreases from the air blowing channel toward the dust collection chamber.

[0015] As a further aspect of the present invention: the horizontal adjustment component includes a second mounting plate located on the rear side of the core cavity, wherein the core cavity is slidably connected to the second mounting plate, the bottom of the second mounting plate is connected to a system mounting base plate, and the bottom sides of the system mounting base plate are slidably connected to guide rails via sliders, the front end of one of the guide rails is connected to a handwheel via a connecting rod, the outer side of the handwheel is connected to a handwheel nut, and the handwheel nut is connected to the bottom of the core cavity via the mounting plate.

[0016] As a further aspect of the present invention: the vertical adjustment component includes an adjustment plate disposed at the bottom of the core cavity, the rear side of the adjustment plate being slidably connected to the front end of the mounting plate via a guide rail slider, wherein a micrometer head fixing plate is provided at the bottom of the front end of the mounting plate, a micrometer head is mounted on the micrometer head fixing plate, and the top of the micrometer head is connected to the adjustment plate.

[0017] As a further aspect of the present invention: the dust removal chamber assembly is divided into upper and lower dust removal components by a partition, which are respectively designed to remove dust particles of different sizes.

[0018] As a further aspect of the present invention: the upper dust removal component includes an upper air blowing plate and an upper dust removal hood, wherein the upper air blowing plate is located at the upper front end of the dust removal chamber assembly, and an air blowing groove 2 is formed on the upper air blowing plate; the upper dust removal hood is located on the rear side of the dust removal chamber assembly; and the upper dust removal hood is connected to the air blowing groove 2 to form an upper dust removal channel.

[0019] As a further aspect of the present invention: the lower dust removal component includes an air blowing component located at a lower position on the front side of the dust removal chamber assembly, wherein an air blowing nozzle is movably connected to the air blowing component, and a lower dust removal hood is opened on the rear side of the bottom of the dust removal chamber assembly; wherein the air blowing nozzle communicates with the lower dust removal hood to form a lower dust removal channel.

[0020] As a further embodiment of the present invention: the dust removal chamber assembly is provided with differential adjustment components on both sides, wherein the differential adjustment components include a movable plate slidably connected to the side wall of the dust removal chamber assembly, the top of the movable plate is provided with a differential adjustment head, and the bottom of the movable plate is movably connected with a tension roller that contacts the electrode sheet, and a limit component is installed on one side of the movable plate.

[0021] The present invention also discloses a dust removal method for a non-contact surface dust removal device for laser cutting, comprising the following steps:

[0022] S1. First, the cutting area of ​​the electrode is tensioned by the tension roller and the guide roller, so that the cutting area is directly below the laser and the dust removal system on the electrode.

[0023] S2. Next, compressed air enters the porous air suspension plate through the air blowing joint. Due to the viscosity of the fluid in the porous air suspension plate, a uniform air film will be formed on the surface of the porous air suspension plate, which will support and buffer the electrode.

[0024] S3. In the dust removal system on the electrode sheet, the air nozzle blows out airflow to blow the dust generated during cutting toward the lower dust removal hood in the dust removal chamber assembly, and then sucks it into the dust collector through negative pressure.

[0025] S4. In the electrode under dust removal support system, dust enters from the laser trajectory opening and then falls into the core cavity. The airflow blown out through the air blowing channel blows the dust to the dust collection chamber to achieve bottom dust removal.

[0026] S5. Finally, the airflow from the nozzle will exert downward pressure on the electrode, which can be balanced with the air damping generated by the porous air suspension plate below.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] I. This invention achieves a non-contact dust removal method by setting an upper dust removal system and a lower dust removal support system above and below the electrode sheet respectively, and using guide rollers for transmission. The structure is simple, reduces space occupation, and is easy to install. At the same time, this invention sets a porous air suspension plate and an air blowing joint below the electrode sheet. The compressed air from the air blowing joint passes through the porous air suspension plate to form air damping, which can support and buffer the electrode sheet. By balancing the air blowing above the electrode sheet and the suspension force below the electrode sheet, not only can the dust removal purpose be achieved, but also the electrode sheet vibration can be prevented from causing laser defocusing and affecting the electrode sheet cutting quality.

[0029] Second, this invention sets a tension roller on the dust removal system on the electrode sheet and a guide roller on the dust removal support system below the electrode sheet. The guide roller is used to support the electrode sheet, and the tension roller can be adjusted up and down to tension the electrode sheet. Through the alternating micro-adjustment of the tension roller and the guide roller, the tension of the electrode sheet cutting area can be achieved, ensuring that the electrode sheet is flat during laser cutting, thereby ensuring the quality of laser cutting.

[0030] 3. The electrode sheet of the present invention includes a material area and a blank area, wherein the thickness of the material area and the thickness of the blank area are different. Generally, the thickness of the material area is greater than that of the blank area. The guide roller and the tension roller are both set as variable diameter rollers so that the material area and the blank area can fit the roller, ensuring the stability between the electrode sheet and the roller. The cutting area of ​​the electrode sheet can be tensioned by the up and down movement of the guide roller and the tension roller to prevent the electrode sheet from shaking during cutting.

[0031] Fourth, this invention enables the horizontal movement of the core cavity (Y-axis adjustment) by setting guide rails, sliders, handwheels, and handwheel nuts at the bottom of the core cavity, allowing it to be adjusted according to the horizontal orientation of the electrode. Furthermore, the bottom of the core cavity is also equipped with guide rails, sliders, adjustment plates, micrometer head fixing plates, and micrometer heads, enabling the vertical movement of the core cavity (Z-axis adjustment), allowing it to be adjusted according to the vertical orientation of the electrode. This ensures that the dust removal support system under the electrode corresponds to the electrode position, while also guaranteeing stable support for the electrode from the rollers and porous air suspension plate.

[0032] V. The dust removal chamber assembly of the present invention is divided into upper and lower dust removal components by a partition, which are respectively designed to remove dust of different particle sizes. The upper dust removal component has an air blowing groove on the inner side of the air blowing plate, which can form an air blowing knife to guide the dust to the vicinity of the upper dust removal hood and then be sucked away by the negative pressure airflow. The air blowing knife can also form an air wall to prevent the dust from drifting upward and polluting the workshop. The lower dust removal chamber blows the dust into the lower dust removal hood through the air blowing nozzle and is sucked away by the negative pressure. At the same time, the air blowing nozzle and the lower dust removal hood can generate downward pressure on the electrode sheet. In conjunction with the cyclone floating plate, it can prevent the electrode sheet from shaking and allow the electrode sheet to be suspended above the roller.

[0033] VI. In this invention, an air nozzle is provided at the front end of the dust removal chamber assembly. The air nozzle forms a certain angle with the electrode plate and blows air towards the electrode ear side. The two sides of the air nozzle are connected to the blowing assembly through handwheel two. The angle of the air nozzle can be finely adjusted by adjusting handwheel two. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a non-contact surface dust removal device for laser cutting according to an embodiment of the present invention;

[0035] Figure 2 This is an embodiment of the present invention. Figure 1 Another structural diagram from a different perspective;

[0036] Figure 3 This is an embodiment of the present invention. Figure 1 The front view;

[0037] Figure 4 This is a schematic diagram of the dust removal support system under the electrode sheet according to an embodiment of the present invention;

[0038] Figure 5 This is an embodiment of the present invention. Figure 4 Another structural diagram from a different perspective;

[0039] Figure 6 This is an embodiment of the present invention. Figure 4 Side sectional view;

[0040] Figure 7 This is a schematic diagram of the dust removal system on the electrode sheet according to an embodiment of the present invention;

[0041] Figure 8 This is an embodiment of the present invention. Figure 7 Side view;

[0042] Figure 9 This is an embodiment of the present invention. Figure 7 Side sectional view;

[0043] Figure 10 This is a schematic diagram illustrating the principle of electrode tensioning in an embodiment of the present invention;

[0044] Figure 11 This is an embodiment of the present invention. Figure 10 A schematic diagram along direction A in the middle view;

[0045] Figure 12 This is a schematic diagram illustrating the principle of electrode tensioning in an embodiment of the present invention;

[0046] Figure 13 This is a top-view schematic diagram illustrating the principle of electrode tensioning in an embodiment of the present invention;

[0047] Explanation of reference numerals in the attached diagram: 1. Laser; 2. Electrode; 211. Material area; 212. Blank area; 11. Dust removal system on the electrode; 12. Dust removal support system under the electrode; 13. Guide roller; 14. Guide rail; 15. Slider; 16. Handwheel; 17. System mounting base plate; 18. Handwheel nut; 19. Mounting plate; 20. Guide rail slider; 21. Adjustment plate; 22. Micrometer head fixing plate; 23. Micrometer head; 24. Core cavity; 241. Slope; 242. Laser trajectory opening; 25. Roller fixing plate one; 251. Air blowing groove; 26. Air pipe connector; 27. Roller; 28. Porous air suspension plate 29. Roller fixing plate II; 30. Dust collection chamber; 31. Air blowing connector; 32. Dust collection drawer; 33. Mounting plate II; 34. Air blowing assembly; 341. Air blowing nozzle; 342. Handwheel II; 343. Observation window; 35. Dust removal chamber assembly; 351. Upper air blowing plate; 3511. Air blowing groove II; 352. Upper dust removal hood; 353. Lower dust removal hood; 354. Partition; 36. Micro-adjustment component; 361. Micro-adjustment head; 362. Micro-head mounting plate; 363. Moving plate; 364. Tensioning roller; 365. Limiting plate; 366. Spring rod; 367. Spring rod fixing plate. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0049] Reference Figure 1 , Figure 2 and Figure 3 A non-contact surface dust removal device for laser cutting includes a laser 1 and an electrode 2. The electrode 2 moves horizontally on the laser cutting device, while the laser 1 performs laser cutting on it. The laser 1 is located directly above the electrode 2. According to the shape of the electrode tab and process parameters, the laser 1 forms a cutting trajectory through a galvanometer. It should be noted that the electrode 2 includes a material area 211 and a blank area 212. The thickness of the material area 211 and the thickness of the blank area 212 are different. Generally, the thickness of the material area 211 is greater than the thickness of the blank area 212.

[0050] It also includes an electrode dust removal system 11, an electrode lower dust removal support system 12, and a guide roller 13 located directly above the laser 1. The electrode 2 is located between the electrode upper dust removal system 11 and the electrode lower dust removal support system 12. The electrode upper dust removal system 11 performs dust removal on the top of the electrode 2, that is, it removes the dust generated by laser cutting. The electrode lower dust removal support system 12 performs dust removal on the bottom of the electrode 2 and also provides support for the bottom of the electrode 2. The guide roller 13 is located between the electrode upper dust removal system 11 and the electrode lower dust removal support system 12, supports the bottom of the electrode 2, and drives the laser cutting of the electrode 2 to achieve horizontal movement.

[0051] Reference Figure 7 , Figure 8 and Figure 9 The electrode dust removal system 11 includes a dust removal chamber assembly 35, wherein the dust removal chamber assembly 35 is divided into upper and lower dust removal components by a partition 354, which are respectively used to remove dust of different particle sizes.

[0052] Furthermore, the upper dust removal component includes an upper air blowing plate 351 and an upper dust removal hood 352. The upper air blowing plate 351 is located at the upper front end of the dust removal chamber assembly 35, and an air blowing groove 3511 is formed on the upper air blowing plate 351. The upper dust removal hood 352 is located on the rear side of the dust removal chamber assembly 35. The upper dust removal hood 352 is connected to the air blowing groove 3511 to form an upper dust removal channel. The air blowing groove 3511 on the upper air blowing plate 351 can form an air blowing knife to guide the dust to the vicinity of the upper dust removal hood 352 and then be sucked away by the negative pressure airflow. The air blowing knife can also form an air wall to prevent the dust from drifting upwards and polluting the workshop.

[0053] Furthermore, the lower dust collector includes an air blowing assembly 34 located at the lower front side of the dust collector assembly 35. An air blowing nozzle 341 is movably connected to the air blowing assembly 34, and both ends of the nozzle 341 are movably connected to the air blowing assembly 34 via a second handwheel 342. Rotating the second handwheel 342 adjusts the angle of the nozzle 341, so that the nozzle 341 forms a certain angle with the electrode plate 2, blowing air towards the electrode ear side. The angle of the nozzle 341 is finely adjusted by adjusting the second handwheel 342. A lower dust collector hood 353 is opened at the rear bottom side of the dust collector assembly 35; the nozzle 341 communicates with the lower dust collector hood 353, forming a lower dust collection channel. The airflow from the nozzle 341 blows dust into the lower dust collector hood 353, where it is sucked away by negative pressure.

[0054] It should be noted that the airflow blown out by the air nozzle 341 and the lower dust removal hood 353 can exert downward pressure on the electrode sheet. In conjunction with the porous air suspension plate 28, it can prevent the electrode sheet 2 from shaking and allow the electrode sheet to suspend above the roller 27.

[0055] Reference Figure 7 An observation window 343 is located directly in front of the dust removal chamber assembly 35. The window is made of transparent acrylic, PVC, etc., which makes it convenient for workers to observe and also serves as a seal. The observation window 343 can also be pulled out from the side of the dust removal chamber 35 to facilitate internal cleaning by workers.

[0056] Reference Figure 7 and Figure 8Both sides of the dust removal chamber assembly 35 are equipped with micro-adjustment components 36. Each micro-adjustment component 36 includes a movable plate 363 slidably connected to the side wall of the dust removal chamber assembly 35. A micro-adjustment head 361 is located at the top of the movable plate 363 and is mounted on a micro-adjustment head mounting plate 362. The micro-adjustment head mounting plate 362 is detachably mounted on the side wall of the dust removal chamber assembly 35 and is positioned directly above the movable plate 363. A tension roller 364, which contacts the electrode plate 2, is movably connected to the bottom of the movable plate 363. A limiting plate 365 is located on one side of the movable plate 363. The limiting plate 365 abuts against the movable plate 363 but is not fixed, therefore it does not restrict the movement of the movable plate 363. A spring rod 366 is connected to one side of the limiting plate 365 and is mounted to the side wall of the dust removal chamber assembly 35 via a spring rod fixing plate 367 (e.g., ...). Figure 8 (As shown).

[0057] It should be noted that the movable plate 363 can be moved by a sliding mechanism such as a slider or dovetail groove on its back. The tension roller 364 is a variable diameter roller that can effectively fit the material area 211 and the blank area 212. The tension roller 364 is fixed below the movable plate 363, and the tension is finely adjusted by the micro-adjustment head 361. There is a spring rod 366 below the limiting plate 365 on the side of the movable plate 363, which can provide upward elasticity, enabling the tension roller 364 to provide a buffering effect while tensioning the electrode. The spring rod 366 is fixed by the spring steel fixing plate 367.

[0058] When the tensioning roller 364 adjusts the tension of the electrode 2, it can be done by adjusting the differential adjustment head 36. The differential adjustment head 36 drives the moving plate 363, which in turn drives the tensioning roller 364 to move up or down accordingly. During the movement, the limiting plate 365 limits the moving plate 363.

[0059] Reference Figure 4 and Figure 5 The electrode under-dust removal support system 12 includes a core cavity 24. A horizontal adjustment component for adjusting the Y-axis direction is installed at the bottom of the core cavity 24, and a vertical adjustment component for adjusting the Z-axis direction is also installed at the bottom of the core cavity 24. The orientation of the core cavity 24 can be fully adjusted through the horizontal and vertical adjustment components, so that the position of the electrode 2 can be flexibly adjusted.

[0060] Furthermore, the horizontal adjustment component includes a mounting plate 33 located on the rear side of the core cavity 24, wherein the mounting plate 33 is slidably connected to the core cavity 24, and the bottom of the mounting plate 33 is connected to a system mounting base plate 17. The bottom sides of the system mounting base plate 17 are slidably connected to guide rails 14 via sliders 15. The front end of one of the guide rails 14 is connected to a handwheel 16 via a connecting rod. The outer side of the handwheel 16 is threaded with a handwheel nut 18, and the handwheel nut 18 is connected to the bottom of the core cavity 24 via a mounting plate 19.

[0061] When adjusting the core cavity 24 horizontally, first turn the handwheel 16. The handwheel 16 drives the handwheel nut 18 to move outside the handwheel 16, which in turn drives the slider 15 to move along the guide rail 14. It should be noted that the handwheel 16 should be arranged parallel to the guide rail 14, and the length of the handwheel 16 should be greater than or equal to the length of the guide rail 14. Therefore, the range of movement of the core cavity 24 is the length range of the guide rail 14. When the slider 15 moves along the guide rail 14, it will drive the system mounting base plate 17, mounting plate 23, and core cavity 24 to move synchronously, thereby adjusting the position of the core cavity 24 so that it can be adjusted according to the position of the electrode 2.

[0062] Furthermore, the vertical adjustment component includes an adjustment plate 21 located at the bottom of the core cavity 24. The rear side of the adjustment plate 21 is slidably connected to the front end of the mounting plate 19 via a guide rail slider 20. A micrometer head fixing plate 22 is located at the bottom front end of the mounting plate 19, and a micrometer head 23 is mounted on the micrometer head fixing plate 22. The top of the micrometer head 23 is connected to the adjustment plate 21. It should be noted that the micrometer head and micrometer adjustment head mentioned in this application are both relatively mature micrometer adjustment heads currently available on the market, used to adjust the positional relationship of objects or equipment. Since the micrometer adjustment heads currently available on the market are relatively mature and this application has not made any improvements to them, but only uses them, they will not be described in detail.

[0063] When the core cavity 24 is vertically adjusted, the micrometer head 23 is first used to drive the guide rail slider 20 on the inner side of the adjustment plate 21 to slide on the mounting plate 19, thereby moving it up or down. Since the top of the adjustment plate 21 is connected to the core cavity 24, and the core cavity 24 slides with the mounting plate 23, the core cavity 24 can be moved up and down. When the core cavity 24 is moved horizontally, the micrometer head 23, the adjustment plate 21, and the mounting plate 19 fix the core cavity 24 vertically to prevent vertical failure during horizontal adjustment. When the core cavity 24 is moved vertically, the handwheel 16 does not rotate. Therefore, the handwheel 16, the handwheel nut 18, and the mounting plate 19 fix the core cavity 24 horizontally to prevent horizontal failure during vertical adjustment.

[0064] Reference Figure 4 , Figure 5 and Figure 6 An air blowing groove 251 is provided on the rear side of the core cavity 24, and a dust collection chamber 30 is installed on the front side of the core cavity 24, and the dust collection chamber 30 and the core cavity 24 are connected. A dust collection drawer 32 is slidably installed in the dust collection chamber 30. Rollers 27 are provided on both sides of the top of the core cavity 24. When the porous gas suspension plate 28 is not in use, the rollers 27 can contact the electrode 2 and support its bottom.

[0065] A porous air suspension plate 28 is provided between the two rollers 27, and an air blowing connector 31 is provided at the front end of the core cavity 24. The air blowing connector 31 is connected to the porous air suspension plate 28. The compressed air from the air blowing connector 31 passes through the porous air suspension plate 28 and can form air damping to support and buffer the electrode 2.

[0066] It should be noted that the airflow blown out by the air nozzle 341 of this application generates downward pressure on the electrode 2, which can form an air damping balance with the porous air suspension plate 28 below. The balance between the air blowing above the electrode and the suspension force below can not only achieve the purpose of dust removal, but also prevent the electrode from shaking and causing the laser to lose focus, thus affecting the cutting quality of the electrode.

[0067] Reference Figure 6 The core cavity 24 includes a slope 241 located inside the cavity and a laser trajectory opening 242 located at the top of the cavity. The laser trajectory opening 242 is located on one side of the porous air suspension plate 28 and at the top of the core cavity 24. The height of the slope 241 decreases from the air blowing channel 251 toward the dust collection chamber 30.

[0068] When in use, if impurities or dust fall into the slope 241 inside the cavity through the laser trajectory opening 242, they can be blown into the dust collection chamber 30 along the slope 241 by the air blowing outside the air blowing groove 251. Then, they can be taken out through the dust collection drawer 32 and the dust or impurities can be poured out.

[0069] This application is attached Figure 10 , Figure 11 and Figure 12 The schematic diagrams of electrode 2 before and after tensioning are given. Figure 10 and Figure 11 This is a schematic diagram of the principle before two electrodes are tightly bonded. Figure 12 This is a schematic diagram of the principle after the electrode 2 is tensioned. The tensioning of the electrode 2 is achieved by moving the tensioning roller 364 or the overpass roller 27 up or down.

[0070] The principle of the bottomless laser cutting suspended dust removal of the present invention is as follows: First, the cutting area of ​​the electrode 2 is tensioned by the tension roller 364 and the guide roller 27; second, compressed air enters the porous air suspension plate 28 with a specific porosity through the air blowing joint 31. Due to the viscosity of the fluid in the porous air suspension plate, a uniform air film is formed on the surface of the porous air suspension plate 28, which can play a supporting and buffering role for the electrode; finally, the air blowing nozzle 341 in the air blowing assembly 34 above the electrode 2 blows out airflow to remove the dust generated during cutting. The dust is blown towards the lower dust cover 353 inside the dust removal chamber assembly 35, and then sucked into the dust collector by negative pressure. In the electrode under dust removal support system, the dust enters from the laser trajectory opening 242 and falls onto the slope 241 inside the core cavity 24. The airflow blown out by the air blowing groove 251 blows the dust towards the dust collection chamber 30, realizing the dust removal at the bottom of the electrode. At the same time, the airflow blown out by the air blowing nozzle 341 will generate downward pressure on the electrode 2, which can be balanced with the air damping generated by the porous air suspension plate 28 below.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-contact surface dust removal device for laser cutting, characterized in that, It includes an upper dust removal system (11), a lower dust removal support system (12), and a guide roller (13), with the guide roller (13) located between the upper dust removal system (11) and the lower dust removal support system (12); The electrode under dust removal support system (12) is equipped with a porous air suspension plate (28) and an air blowing connector (31). The compressed air from the air blowing connector (31) passes through the porous air suspension plate (28) to form air damping. Compressed air enters the porous air suspension plate (28) with porosity through the air blowing joint (31). Due to the viscosity of the fluid in the porous air suspension plate, a uniform air film is formed on the surface of the porous air suspension plate (28), which has air damping to support and buffer the electrode. The dust removal system (11) on the electrode includes an air blowing assembly (34) and a dust removal chamber assembly (35). The air blowing assembly (34) blows out airflow to blow dust toward the dust removal chamber assembly (35) and then sucks it out by negative pressure. The airflow blown out by the air blowing assembly (34) and the porous air suspension plate (28) form air damping to achieve balance. A tensioning roller is installed on the dust removal system on the electrode sheet, and a guide roller is installed on the dust removal support system below the electrode sheet. The alternating micro-adjustment of the tensioning roller and the guide roller can achieve tension in the electrode sheet cutting area, ensuring that the electrode sheet is flat during laser cutting. The electrode under-dust removal support system (12) includes a core cavity (24), an air blowing groove (251) is provided on the rear side of the core cavity (24), and a dust collection chamber (30) is installed on the front side of the core cavity (24). The dust collection chamber (30) and the core cavity (24) are connected.

2. The non-contact surface dust removal device for laser cutting according to claim 1, characterized in that: The bottom of the core cavity (24) is equipped with a horizontal adjustment component for adjusting the Y-axis direction, and the bottom of the core cavity (24) is also equipped with a vertical adjustment component for adjusting the Z-axis direction.

3. The non-contact surface dust removal device for laser cutting according to claim 2, characterized in that: Dust collection drawer (32) is slidably installed in the dust collection chamber (30), and rollers (27) are provided on both sides of the top of the core cavity (24). The core cavity (24) includes a slope (241) inside the cavity and a laser trajectory opening (242) on the top of the cavity, and the height of the slope (241) decreases from the air blowing channel (251) toward the dust collection chamber (30).

4. The non-contact surface dust removal device for laser cutting according to claim 2, characterized in that: The horizontal adjustment component includes a mounting plate two (33) located on the rear side of the core cavity (24), wherein the core cavity (24) is slidably connected to the mounting plate two (33), the bottom of the mounting plate two (33) is connected to a system mounting base plate (17), and the bottom sides of the system mounting base plate (17) are slidably connected to guide rails (14) via sliders (15). The front end of one of the guide rails (14) is connected to a handwheel (16) via a connecting rod, and a handwheel nut (18) is connected to the outside of the handwheel (16). The handwheel nut (18) is connected to the bottom of the core cavity (24) via a mounting plate (19).

5. A non-contact surface dust removal device for laser cutting according to claim 4, characterized in that: The vertical adjustment component includes an adjustment plate (21) located at the bottom of the core cavity (24). The rear side of the adjustment plate (21) is slidably connected to the front end of the mounting plate (19) via a guide rail slider (20). The bottom of the front end of the mounting plate (19) is provided with a micrometer head fixing plate (22). A micrometer head (23) is installed on the micrometer head fixing plate (22), and the top of the micrometer head (23) is connected to the adjustment plate (21).

6. The non-contact surface dust removal device for laser cutting according to claim 1, characterized in that: The dust removal chamber assembly (35) is divided into upper and lower dust removal components by a partition (354), which are respectively designed to remove dust particles of different sizes.

7. A non-contact surface dust removal device for laser cutting according to claim 6, characterized in that: The upper dust removal component includes an upper air blowing plate (351) and an upper dust removal hood (352). The upper air blowing plate (351) is located at the upper front end of the dust removal chamber assembly (35), and an air blowing groove (3511) is opened on the upper air blowing plate (351). The upper dust removal hood (352) is located on the rear side of the dust removal chamber assembly (35). The upper dust removal hood (352) is connected to the air blowing groove (3511) to form an upper dust removal channel.

8. A non-contact surface dust removal device for laser cutting according to claim 6, characterized in that: The lower dust removal component includes an air blowing component (34) located at the lower front side of the dust removal chamber assembly (35), wherein an air blowing nozzle (341) is movably connected to the air blowing component (34), and a lower dust removal hood (353) is opened at the rear bottom side of the dust removal chamber assembly (35); wherein the air blowing nozzle (341) is connected to the lower dust removal hood (353) to form a lower dust removal channel.

9. A non-contact surface dust removal device for laser cutting according to claim 1, characterized in that: The dust removal chamber assembly (35) is equipped with micro-adjustment components (36) on both sides. The micro-adjustment components (36) include a movable plate (363) that is slidably connected to the side wall of the dust removal chamber assembly (35). The top of the movable plate (363) is provided with a micro-adjustment head (361). The bottom of the movable plate (363) is movably connected with a tension roller (364). A limiter is installed on one side of the movable plate (363).

10. A dust removal method using a non-contact surface dust removal device for laser cutting as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. First, the cutting area of ​​the electrode is tensioned by the tension roller and the guide roller, so that the cutting area is directly below the laser and the dust removal system on the electrode. S2. Next, compressed air enters the porous air suspension plate through the air blowing joint. Due to the viscosity of the fluid in the porous air suspension plate, a uniform air film will be formed on the surface of the porous air suspension plate, which will support and buffer the electrode. S3. In the dust removal system on the electrode sheet, the air nozzle blows out airflow to blow the dust generated during cutting toward the lower dust removal hood in the dust removal chamber assembly, and then sucks it into the dust collector through negative pressure. S4. In the electrode under dust removal support system, dust enters from the laser trajectory opening and then falls into the core cavity. The airflow blown out through the air blowing channel blows the dust to the dust collection chamber to achieve bottom dust removal. S5. Finally, the airflow from the nozzle will exert downward pressure on the electrode, which can be balanced with the air damping generated by the porous air suspension plate below.

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