Device for non-contact surface dust removal during laser cutting
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- HEFEI GUOXUAN HIGH TECH POWER ENERGY
- Filing Date
- 2023-11-02
- Publication Date
- 2026-07-02
Abstract
Description
Laser cutting non-contact surface dust removal equipment and dust removal method Technical Field
[0001] The present invention relates to the technical field of lithium battery pole piece dust removal, and in particular to a laser cutting non-contact surface dust removal device and a dust removal method thereof. Background Art
[0002] Lasers generate a large amount of dust when cutting tabs. Poor dust control is considered one of the three major hazards in lithium battery manufacturing, and dust control is a major headache for many lithium battery manufacturers. Poor dust control can lead to high short-circuit rates, high self-discharge, and significant safety risks in the modules. Due to the high cutting temperatures of laser cutting, powdered dust can also drift and potentially damage the laser's galvanometer.
[0003] Horizontal movement of the electrode is called flat cutting, while vertical movement is called vertical cutting. Dust from flat cutting will settle on the electrode, while dust from vertical cutting will continue to fall due to gravity. Currently, the mainstream flat cutting method uses a cutting base plate underneath the electrode for support. However, due to the sliding friction of the electrode above the cutting base plate, the cutting base plate is highly contaminated, requiring frequent cleaning and increasing labor hours. Furthermore, there is a risk of scratching the electrode plate as it slides on the cutting base plate.
[0004] For example, in the existing patent document with announcement number CN216758930U and patent name "An electrode sheet cutting device for lithium battery processing", it specifically discloses "including a base plate, a driving component is installed on the surface of the base plate, an adjustment component and a limit component are respectively installed on the top of the base plate, a frame is installed on the surface of the adjustment component, the inner wall of the frame is connected to the first roller through a bearing, a frame is welded to the rear side of the top of the base plate, and a cutting component is installed on the surface of the frame, the driving component includes a second roller, both ends of the second roller are movably embedded in the surface of the base plate through bearings, the left end of the second roller extends to the left side of the base plate and is fixedly connected to a synchronization disk. The utility model has the advantages of conveying, flattening cutting and guiding and limiting". It can be seen from the above records that the patent directly places the electrode sheet on multiple first rollers (equivalent to the cutting base plate). When the electrode sheet is being cut, the area around the first roller is highly contaminated and needs to be cleaned frequently, which is time-consuming and labor-intensive. At the same time, there is a risk of scratching the electrode sheet when the electrode sheet slides on the first roller (cutting base plate).
[0005] Therefore, it is urgent to develop a method that has good dust removal effect and eliminates the cutting base plate. However, if the cutting base plate is eliminated, the cutting area under the cutting base plate has no support, which will cause the pole piece to be disturbed by the positive or negative pressure airflow, causing jitter and laser defocus, and ultimately leading to uninterrupted cutting and resulting in chain reactions.
[0006] Summary of the Invention
[0007] The technical problem to be solved by the present invention is: how to solve the current problem that the pole piece is disturbed by positive or negative pressure airflow, causing jitter and laser defocusing due to the cancellation of the pole piece cutting base plate.
[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0009] A laser cutting non-contact surface dust removal device, comprising an upper dust removal system for a pole piece, a lower dust removal support system for a pole piece, and a guide roller, wherein the guide roller is located between the upper dust removal system for a pole piece and the lower dust removal support system for a pole piece;
[0010] A porous air suspension plate and an air blowing joint are provided in the dust removal support system under the pole piece, wherein the compressed air of the air blowing joint passes through the porous air suspension plate to form air damping;
[0011] The dust removal system on the pole piece includes an air blowing component and a dust removal cavity component, wherein the air blowing component blows out an air flow to blow the dust toward the dust removal cavity component and then sucks it out through negative pressure; the air flow blown out by the air blowing component and the porous air suspension plate form air damping to produce balance.
[0012] The present invention respectively arranges an upper dust removal system and a lower dust removal support system above and below the pole piece, and utilizes a guide roller transmission to realize a non-contact dust removal method. The structure is simple, the space occupancy is reduced, and the installation is convenient. At the same time, the present invention arranges a porous air suspension plate and an air blowing joint below the pole piece. The air compressed by the air blowing joint passes through the porous air suspension plate to form air damping, which can form a supporting and buffering effect on the pole piece. At the same time, the balance of the blowing force above the pole piece and the suspension force below the pole piece can not only achieve the purpose of dust removal, but also prevent the pole piece from shaking and causing the laser to lose focus, thereby affecting the pole piece cutting quality.
[0013] As a further solution of the present invention: the dust removal support system under the pole piece includes a core cavity, the bottom of the core cavity is equipped with a horizontal adjustment member for adjusting it in the Y-axis direction, and the bottom of the core cavity is also equipped with a vertical adjustment member for adjusting it in the Z-axis direction.
[0014] As a further solution 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;
[0015] The core cavity includes a slope surface arranged inside the cavity and a laser track opening opened at the top of the cavity, and the height of the slope surface gradually decreases from the blowing groove toward the dust collection chamber.
[0016] As a further solution of the present invention: the horizontal adjustment part includes a mounting plate 2 located on the rear side of the core cavity, wherein the core cavity is slidably connected to the mounting plate 2, the bottom of the mounting plate 2 is connected to the system mounting base plate, and the bottom sides of the system mounting base plate are slidably connected to guide rails through sliders, and the front end of one of the guide rails is connected to a handwheel through a connecting rod, and 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 through the mounting plate.
[0017] As a further solution of the present invention: the vertical adjustment member includes an adjustment plate arranged at the bottom of the core cavity, the rear side of the adjustment plate is slidably connected to the front end of the mounting plate through a guide rail slider, wherein a differential head fixing plate is provided at the bottom of the front end of the mounting plate, a differential head is installed on the differential head fixing plate, and the top of the differential head is connected to the adjustment plate.
[0018] As a further solution of the present invention: the dust removal chamber assembly is divided into two layers by a partition, an upper dust removal part and a lower dust removal part respectively corresponding to dust with different particle sizes.
[0019] As a further solution of the present invention: the upper dust removal component includes an upper blowing plate and an upper dust removal hood, wherein the upper blowing plate is arranged at the upper front end of the dust removal chamber assembly, and a second blowing groove is provided on the upper blowing plate, and the upper dust removal hood is arranged on the rear side of the dust removal chamber assembly; and the upper dust removal hood is connected to the second blowing groove to form an upper dust removal channel.
[0020] As a further solution of the present invention: the lower dust removal component includes an air blowing component arranged 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 cover is opened on the rear side of the bottom of the dust removal chamber assembly; wherein the air blowing nozzle is connected to the lower dust removal cover to form a lower dust removal channel.
[0021] As a further solution of the present invention: differential adjustment heads are installed on both sides of the dust removal chamber assembly, wherein the differential adjustment head includes a movable plate slidably connected to the side wall of the dust removal chamber assembly, and a differential adjustment head is provided on the top of the movable plate, wherein the bottom of the movable plate is movably connected to a tensioning roller in contact with the pole piece, and a limiting member is installed on one side of the movable plate.
[0022] The present invention also discloses a dust removal method for a laser cutting non-contact surface dust removal device, comprising the following steps:
[0023] S1. First, tension the cutting area of the pole piece through the tensioning roller and the over roller so that the cutting area is directly under the laser and the dust removal system on the pole piece;
[0024] S2. Secondly, the compressed air enters the porous air suspension plate through the air blowing joint. Due to the viscosity of the fluid in the porous plate, a uniform air film will be formed on the surface of the porous air suspension plate, which supports and cushions the electrode.
[0025] S3. In the dust removal system on the electrode, the air nozzle will blow out air to blow the dust generated by cutting to the lower dust removal cover in the dust removal chamber assembly, and then suck it into the dust collector through negative pressure;
[0026] S4. In the dust removal support system under the pole piece, dust enters from the laser track opening and then falls into the core cavity. The air flow blown out by the blowing slot blows the dust to the dust collection chamber to achieve bottom dust removal;
[0027] S5. Finally, the airflow from the blowing nozzle will produce downward pressure on the electrode, which can form a balance with the air damping generated by the porous air suspension plate below.
[0028] Compared with the prior art, the present invention has the following beneficial effects:
[0029] 1. The present invention respectively arranges an upper dust removal system and a lower dust removal support system above and below the pole piece, and utilizes a guide roller transmission to achieve a non-contact dust removal method. The structure is simple, the space occupation is reduced, and the installation is convenient. At the same time, the present invention arranges a porous air suspension plate and a blowing joint below the pole piece. The compressed air from the blowing joint passes through the porous air suspension plate to form an air damping to support and buffer the pole piece. The balance of the blowing force above the pole piece and the suspension force below the pole piece can not only achieve the purpose of dust removal, but also prevent the pole piece from shaking and causing the laser to lose focus, thereby affecting the pole piece cutting quality.
[0030] Second, the present invention provides a tensioning roller on the dust removal system above the pole piece, and a passing roller on the dust removal support system below the pole piece. The passing roller is used to support the pole piece, and the tensioning roller can be adjusted up and down to tension the pole piece. By alternating micro-adjustments of the tensioning roller and the passing roller, the pole piece cutting area can be tensioned, ensuring that the pole piece is flat during laser cutting, thereby ensuring the quality of laser cutting.
[0031] 3. The electrode of the present invention includes a material area and a blank area, wherein the thickness of the material area and the blank area are different. Generally, the thickness of the material area is greater than that of the blank area. The roller and the tensioning roller are both configured as variable diameter rollers so that the material area and the blank area can fit the rollers, ensuring the stability between the electrode and the rollers. The cutting area of the electrode can be tensioned by the up and down movement of the roller and the tensioning roller to prevent the electrode from shaking during cutting.
[0032] Fourth, the present invention can realize horizontal movement of the core cavity, that is, adjustment in the Y-axis direction, by arranging a guide rail, a slider, a handwheel and a handwheel nut at the bottom of the core cavity, so that it can be adjusted accordingly according to the horizontal orientation of the pole piece; and the bottom of the core cavity is also provided with a guide rail slider, an adjustment plate, a differential head fixing plate and a differential head, so that the vertical movement of the core cavity, that is, adjustment in the Z-axis direction, can be achieved, so that it can be adjusted accordingly according to the vertical orientation of the pole piece, thereby achieving the corresponding position of the dust removal support system under the pole piece and the pole piece, and at the same time, it can also ensure that the roller and the porous air suspension plate provide stable support for the pole piece;
[0033] 5. The dust removal chamber assembly of the present invention is divided into two layers by a partition, an upper dust removal part and a lower dust removal part respectively for removing dust of different particle sizes. The inner side of the upper blowing plate is provided with a blowing groove, which can form an air 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 knife can also form a wind wall to prevent the dust from drifting upward and polluting the workshop; the dust removal in the lower layer of the dust removal chamber is blown by the air flow blown by the blowing nozzle to blow the dust into the lower dust collection hood and be sucked away by the negative pressure. At the same time, the air flow blown by the blowing nozzle and the lower dust collection hood can generate downward pressure on the electrode, which cooperates with the cyclone floating plate to prevent the electrode from shaking and at the same time allows the electrode to float above the roller;
[0034] 6. The present invention provides an air blowing nozzle at the front end of the dust removal chamber assembly. The air blowing nozzle forms a certain angle with the pole piece and blows air toward the pole ear side. The two sides of the air blowing nozzle are connected to the blowing assembly through hand wheel 2. The angle of the air blowing nozzle can be fine-tuned by adjusting hand wheel 2. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIG1 is a schematic structural diagram of a laser cutting non-contact surface dust removal device according to an embodiment of the present invention;
[0036] FIG2 is a schematic structural diagram of FIG1 from another perspective according to the embodiment of the present invention;
[0037] FIG3 is a front view of FIG1 according to the embodiment of the present invention;
[0038] FIG4 is a schematic structural diagram of a dust removal support system under a pole piece according to an embodiment of the present invention;
[0039] FIG5 is a schematic structural diagram of FIG4 from another perspective according to the embodiment of the present invention;
[0040] FIG6 is a side sectional view of FIG4 according to an embodiment of the present invention;
[0041] FIG7 is a schematic structural diagram of a dust removal system on a pole piece according to an embodiment of the present invention;
[0042] FIG8 is a side view of FIG7 according to an embodiment of the present invention;
[0043] FIG9 is a side sectional view of FIG7 according to an embodiment of the present invention;
[0044] FIG10 is a schematic diagram showing the principle of tensioning a pole piece according to an embodiment of the present invention;
[0045] FIG11 is a schematic diagram of view A in FIG10 according to an embodiment of the present invention;
[0046] FIG12 is a schematic diagram showing the principle of a tensioned pole piece according to an embodiment of the present invention;
[0047] FIG13 is a schematic diagram of the top view principle of the pole piece tensioning according to an embodiment of the present invention;
[0048] Explanation of the reference numerals: 1. Laser; 2. Pole piece; 211. Material area; 212. Blank area; 11. Dust removal system on the pole piece; 12. Dust removal support system under the pole piece; 13. Guide roller; 14. Guide rail; 15. Slider; 16. Handwheel; 17. System mounting base; 18. Handwheel nut; 19. Mounting plate; 20. Guide rail slider; 21. Adjustment plate; 22. Differential head fixing plate; 23. Differential head; 24. Core cavity; 241. Slope; 242. Laser track opening; 25. Roller fixing plate 1; 251. Blowing slot; 26. Air pipe joint; 27. Roller; 28. Porous air suspension plate ;29. Roller fixing plate 2; 30. Dust collection chamber; 31. Air blowing joint; 32. Dust collection drawer; 33. Mounting plate 2; 34. Air blowing assembly; 341. Air blowing nozzle; 342. Handwheel 2; 343. Observation window; 35. Dust removal chamber assembly; 351. Upper air blowing plate; 3511. Air blowing slot 2; 352. Upper dust removal cover; 353. Lower dust removal cover; 354. Partition; 36. Differential adjustment head; 361. Differential adjustment head; 362. Differential head mounting plate; 363. Moving plate; 364. Tensioning roller; 365. Limiting plate; 366. Spring rod; 367. Spring rod fixing plate. DETAILED DESCRIPTION
[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in 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 part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0050] Referring to Figures 1, 2 and 3, a laser cutting non-contact surface dust removal device includes a laser 1 and a pole piece 2, wherein the pole piece 2 moves horizontally on the laser cutting device, and the laser 1 performs laser cutting on it. The laser 1 is located directly above the pole piece 2, and the laser 1 forms a cutting track through a galvanometer according to the shape of the pole ear and the process parameters. It should be noted that the pole piece 2 includes a material area 211 and a blank area 212, wherein the thickness of the material area 211 and the blank area 212 are different. Generally, the thickness of the material area 211 is greater than the thickness of the blank area 212.
[0051] It also includes an upper dust removal system 11, a lower dust removal support system 12 and a guide roller 13 located directly below the laser 1. The pole piece 2 is located between the upper dust removal system 11 and the lower dust removal support system 12. The upper dust removal system 11 performs dust removal on the upper part of the pole piece 2, that is, it processes the dust generated by laser cutting. The lower dust removal support system 12 performs dust removal on the lower part of the pole piece 2 and can also support the lower part of the pole piece 2; the guide roller 13 is located between the upper dust removal system 11 and the lower dust removal support system 12, supports the bottom of the pole piece 2, and drives the laser cutting of the pole piece 2 to achieve horizontal movement.
[0052] 7 , 8 and 9 , the dust removal system 11 on the pole piece includes a dust removal chamber assembly 35 , wherein the dust removal chamber assembly 35 is divided into two layers by a partition 354 , an upper dust removal member and a lower dust removal member for removing dust of different particle sizes respectively.
[0053] Furthermore, the upper dust removal component includes an upper blowing plate 351 and an upper dust removal hood 352, wherein the upper blowing plate 351 is arranged at the upper front end of the dust removal chamber assembly 35, and the upper blowing plate 351 is provided with a second blowing groove 3511, and the upper dust removal hood 352 is arranged on the rear side of the dust removal chamber assembly 35; and the upper dust removal hood 352 is connected with the second blowing groove 3511 to form an upper dust removal channel, and the upper blowing plate 351 is provided with a blowing groove 3511. Blowing through the blowing groove 3511 can form a blowing air 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 blowing air knife can also form a wind wall to prevent dust from drifting upward and polluting the workshop.
[0054] Furthermore, the lower dust removal component includes an air blowing assembly 34 provided at a lower front side of the dust removal chamber assembly 35, wherein an air blowing nozzle 341 is movably connected to the air blowing assembly 34, and both ends of the air blowing nozzle 341 are movably connected to the air blowing assembly 34 via a second hand wheel 342. The angle of the air blowing nozzle 341 can be adjusted by turning the second hand wheel 342, that is, the air blowing nozzle 341 forms a certain angle with the pole piece 2 to blow air toward the pole ear side. The air blowing nozzle 341 is fine-tuned in angle by adjusting the second hand wheel 342. A lower dust removal cover 353 is provided at the rear side of the bottom of the dust removal chamber assembly 35; wherein the air blowing nozzle 341 is connected to the lower dust removal cover 353 to form a lower dust removal channel. The airflow blown out by the air blowing nozzle 341 in the lower dust removal chamber blows the dust into the lower dust collection cover 353, where it is sucked away by negative pressure.
[0055] It should be noted that the airflow from the blowing nozzle 341 and the lower dust cover 353 can generate downward pressure on the electrode, and cooperate with the porous air suspension plate 28 to prevent the electrode 2 from shaking while allowing the electrode to float above the roller 27.
[0056] 7 , an observation window 343 is provided directly in front of the dust removal chamber assembly 35 . The material of the observation window 343 is transparent acrylic, PVC, etc., which is convenient for workers to observe and can also play a sealing role. The observation window 343 can also be pulled out from the side of the dust removal chamber 35 to facilitate workers to clean the interior.
[0057] 7 and 8, differential adjustment heads 36 are installed on both sides of the dust removal chamber assembly 35, wherein the differential adjustment head 36 includes a movable plate 363 slidably connected to the side wall of the dust removal chamber assembly 35, a differential adjustment head 361 is provided on the top of the movable plate 363, and the differential adjustment head 361 is mounted on the differential head mounting plate 362, and the differential head mounting plate 362 can be detachably mounted on the side wall of the dust removal chamber assembly 35, and the differential head mounting plate 362 is located at the positive side of the movable plate 363. At the top, the bottom of the movable plate 363 is movably connected to a tensioning roller 364 in contact with the pole piece 2, and a limit plate 365 is provided on one side of the movable plate 363; the limit plate 365 is against the movable plate 363 and is not connected and fixed, so the limit plate 365 does not limit the movement of the movable plate 363; and one side of the limit plate 365 is connected to a spring rod 366, and the spring rod 366 is installed to the side wall of the dust removal chamber assembly 35 through the spring rod fixing plate 367 (as shown in Figure 8).
[0058] It should be noted that the movable plate 363 can be moved by providing a movable mechanism such as a slider or a dovetail groove on its back. The tensioning wheel 364 is a variable diameter roller that can effectively fit the material area 211 and the blank area 212. The tensioning wheel 364 is fixed under the movable plate 363 and the tensioning amount is fine-tuned by the differential adjustment head 361. There is a spring rod 366 under the limit plate 365 on the side of the movable plate 363 to provide an upward elastic force, which enables the tensioning wheel 364 to provide a buffering effect while tensioning the pole piece. The spring rod 366 is fixed by a spring steel fixing plate 367.
[0059] When the tensioning roller 364 adjusts the tension of the pole piece 2, it can be done by adjusting the differential adjustment head 36. The differential adjustment head 36 drives the movable plate 363, and then drives the tensioning roller 364 to move up or down accordingly. During the movement, the limit plate 365 limits the movable plate 363.
[0060] 4 and 5 , the dust removal support system 12 under the pole piece includes a core cavity 24. A horizontal adjustment member for adjusting the core cavity 24 in the Y-axis direction is installed at the bottom of the core cavity 24. A vertical adjustment member for adjusting the core cavity 24 in the Z-axis direction is also installed at the bottom of the core cavity 24. The horizontal adjustment member and the vertical adjustment member can be used to comprehensively adjust the orientation of the core cavity 24 so that it can be flexibly adjusted according to the position of the pole piece 2.
[0061] Furthermore, the horizontal adjustment member includes a mounting plate 2 33 located on the rear side of the core cavity 24, wherein the mounting plate 2 33 is slidably connected to the core cavity 24, and the bottom of the mounting plate 2 33 is connected to the system mounting base plate 17, and the bottom sides of the system mounting base plate 17 are slidably connected to the guide rails 14 through sliders 15, and the front end of one of the guide rails 14 is connected to the handwheel 16 through a connecting rod, and the outer side of the handwheel 16 is threadedly connected to the handwheel nut 18, and the handwheel nut 18 is connected to the bottom of the core cavity 24 through the mounting plate 19.
[0062] When the core cavity 24 is adjusted horizontally, first turn the handwheel 16, which drives the handwheel nut 18 to move on the outside of the handwheel 16, and then drives the slider 15 to move along the guide rail 14. It should be noted here 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 moving range 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 17, the mounting plate 2 33 and the core cavity 24 to move synchronously, and then adjust the position of the core cavity 24 so that it can be adjusted accordingly according to the position of the pole piece 2.
[0063] Furthermore, the vertical adjustment member includes an adjustment plate 21 provided at the bottom of the core cavity 24, and 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, wherein a differential head fixing plate 22 is provided at the bottom of the front end of the mounting plate 19, a differential head 23 is mounted on the differential head fixing plate 22, and the top of the differential head 23 is connected to the adjustment plate 21. It should be noted here that the differential head and differential adjustment head mentioned in this application are both relatively mature differential adjustment heads currently on the market, which are used to adjust the positional relationship of objects or equipment. Since the differential adjustment heads currently on the market are relatively mature and this application has not made any improvements to them and is only used, they will not be described in detail.
[0064] When the core cavity 24 is adjusted vertically, the guide slider 20 on the inner side of the adjustment plate 21 is first driven to slide on the mounting plate 19 by manipulating the differential head 23 to move 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 driven to move up and down; when the core cavity 24 moves horizontally, the differential head 23, the adjustment plate 21 and the mounting plate 19 fix the core cavity 24 in the vertical direction to prevent vertical failure during horizontal adjustment; and when the core cavity 24 moves vertically, the handwheel 16 does not rotate, so the handwheel 16, the handwheel nut 18 and the mounting plate 19 fix the core cavity 24 in the horizontal direction to prevent horizontal failure during vertical adjustment.
[0065] 4 , 5 and 6 , an air blowing groove 251 is provided on the rear side of the core cavity 24 , a dust collecting chamber 30 is installed on the front side of the core cavity 24 , and the dust collecting chamber 30 and the core cavity 24 are connected, a dust collecting drawer 32 is slidably installed in the dust collecting chamber 30 , and rollers 27 are provided on both sides of the top of the core cavity 24 , and when the porous air suspension plate 28 is not in use, the rollers 27 can contact the pole piece 2 to support its bottom.
[0066] A porous air suspension plate 28 is provided between the two rollers 27. 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 to form air damping to support and cushion the electrode 2.
[0067] It should be noted that the airflow blown out by the blowing nozzle 341 of the present application generates downward pressure on the pole piece 2, which can form an air damping balance with the porous air suspension plate 28 below. The balance between the blowing force above the pole piece and the suspension force below can not only achieve the purpose of dust removal, but also prevent the pole piece from shaking and causing the laser to lose focus, affecting the pole piece cutting quality.
[0068] 6 , the core cavity 24 includes a slope 241 provided inside the cavity and a laser track opening 242 opened at the top of the cavity. The laser track opening 242 is opened 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 blowing groove 251 toward the dust collection chamber 30 .
[0069] During use, if impurities or dust fall onto the slope 241 inside the cavity through the laser track opening 242, they can enter the dust collection chamber 30 along the slope 241 under the action of blowing outside the blowing groove 251, and then be taken out through the dust collection drawer 32, and the dust or impurities can be poured out.
[0070] Figures 10, 11 and 12 of this application show the principle diagrams of the pole piece 2 before and after tensioning. Figures 10 and 11 are the principle diagrams before the pole piece 2 is tensioned, and Figure 12 is the principle diagram after the pole piece 2 is tensioned. The tensioning of the pole piece 2 is achieved by moving the tensioning roller 364 or the passing roller 27 up or down.
[0071] 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 tensioning roller 364 and the roller 27; secondly, the compressed air enters the porous air suspension plate 28 with a specific porosity through the blowing joint 31. Due to the viscosity of the fluid in the porous 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 blowing nozzle 341 in the blowing assembly 34 above the electrode 2 will blow out an air flow to remove the powder generated by the cutting. The dust is blown toward the lower dust cover 353 in the dust removal chamber assembly 35, and then sucked into the dust collector through negative pressure. In the dust removal support system under the pole piece, the dust enters from the laser track opening 242, and then falls onto the slope 241 in the core cavity 24. The air flow blown out through the blowing groove 251 blows the dust toward the dust collection chamber 30, thereby realizing dust removal at the bottom of the pole piece. At the same time, the air flow blown out by the blowing nozzle 341 will generate downward pressure on the pole piece 2, which can form a balance with the air damping generated by the porous air suspension plate 28 below.
[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A laser cutting non-contact surface dust removal device, characterized in that: It comprises a dust removal system (11) on the pole piece, a dust removal support system (12) under the pole piece, and a guide roller (13), wherein the guide roller (13) is located between the dust removal system (11) on the pole piece and the dust removal support system (12) under the pole piece; A porous air suspension plate (28) and an air blowing joint (31) are arranged in the dust removal support system (12) under the pole piece, wherein the air blowing joint (31) compresses air through the porous air suspension plate (28) to form air damping; The dust removal system (11) on the pole piece comprises an air blowing component (34) and a dust removal cavity component (35), wherein the air blowing component (34) blows out an air flow to blow the dust toward the dust removal cavity component (35), and then sucks it out through negative pressure; the air flow blown out by the air blowing component (34) and the porous air suspension plate (28) form air damping to produce balance.
2. The laser cutting non-contact surface dust removal device according to claim 1 is characterized in that: The dust removal support system (12) under the pole piece comprises a core cavity (24), the bottom of the core cavity (24) is equipped with a horizontal adjustment member for adjusting the core cavity in the Y-axis direction, and the bottom of the core cavity (24) is also equipped with a vertical adjustment member for adjusting the core cavity in the Z-axis direction.
3. The laser cutting non-contact surface dust removal device according to claim 2 is characterized in that: An air blowing groove (251) is arranged on the rear side of the core cavity (24), the dust collecting chamber (30) is installed on the front side of the core cavity (24), and the dust collecting chamber (30) and the core cavity (24) are connected, and a dust collecting drawer (32) is slidably installed in the dust collecting chamber (30), and rollers (27) are arranged on both sides of the top of the core cavity (24); The core cavity (24) comprises a slope (241) disposed inside the cavity and a laser track opening (242) opened at the top of the cavity, and the height of the slope (241) decreases from the air blowing groove (251) toward the dust collection chamber (30).
4. The laser cutting non-contact surface dust removal device according to claim 2 is characterized in that: The horizontal adjustment member includes a second mounting plate (33) located on the rear side of the core cavity (24), wherein the core cavity (24) is slidably connected to the second mounting plate (33), the bottom of the second mounting plate (33) is connected to a system mounting base plate (17), and the two sides of the bottom of the system mounting base plate (17) are slidably connected to guide rails (14) through sliders (15), the front end of one of the guide rails (14) is connected to a hand wheel (16) through a connecting rod, the outer side of the hand wheel (16) is connected to a hand wheel nut (18), and the hand wheel nut (18) is connected to the bottom of the core cavity (24) through a mounting plate (19).
5. The laser cutting non-contact surface dust removal device according to claim 4 is characterized in that: The vertical adjustment member comprises an adjustment plate (21) arranged 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 differential head fixing plate (22) is provided at the bottom of the front end of the mounting plate (19); a differential head (23) is installed on the differential head fixing plate (22), and the top of the differential head (23) is connected to the adjustment plate (21).
6. The laser cutting non-contact surface dust removal device according to claim 1, characterized in that: The dust removal chamber assembly (35) is divided into two layers, an upper dust removal component and a lower dust removal component, by a partition (354) for removing dust of different particle sizes respectively.
7. The laser cutting non-contact surface dust removal device according to claim 6, characterized in that: The upper dust removal component comprises an upper air blowing plate (351) and an upper dust removal cover (352), wherein the upper air blowing plate (351) is arranged at an upper position of the front end of the dust removal chamber assembly (35), and a second air blowing groove (3511) is provided on the upper air blowing plate (351), and the upper dust removal cover (352) is arranged on the rear side of the dust removal chamber assembly (35); and the upper dust removal cover (352) is connected to the second air blowing groove (3511) to form an upper dust removal channel.
8. The laser cutting non-contact surface dust removal device according to claim 6, characterized in that: The lower dust removal component comprises an air blowing component (34) arranged at a lower front position of the dust removal cavity component (35), wherein an air blowing nozzle (341) is movably connected to the air blowing component (34), and a lower dust removal cover (353) is provided at the rear side of the bottom of the dust removal cavity component (35); wherein the air blowing nozzle (341) is connected to the lower dust removal cover (353) to form a lower dust removal channel.
9. The laser cutting non-contact surface dust removal device according to claim 1, characterized in that: Differential adjustment heads (36) are installed on both sides of the dust removal chamber assembly (35), wherein the differential adjustment head (36) includes a movable plate (363) slidably connected to the side wall of the dust removal chamber assembly (35), a differential adjustment head (361) is provided on the top of the movable plate (363), wherein the bottom of the movable plate (363) is movably connected to a tensioning roller (364), and a limiting member is installed on one side of the movable plate (363).
10. A dust removal method using a laser cutting non-contact surface dust removal device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. First, tension the cutting area of the pole piece by using a tensioning roller and a passing roller, so that the cutting area is directly opposite to the laser and the dust removal system on the pole piece; S2. Secondly, the compressed air enters the porous air suspension plate through the air blowing joint. Due to the viscosity of the fluid in the porous plate, a uniform air film will be formed on the surface of the porous air suspension plate to support and buffer the electrode. S3. In the dust removal system on the pole piece, the air nozzle will blow out airflow to blow the dust generated by cutting to the lower dust removal cover in the dust removal chamber assembly, and then suck it into the dust collector through negative pressure; S4. In the dust removal support system under the pole piece, dust enters from the laser track opening and then falls into the core cavity. The airflow blown out by the blowing slot blows the dust to the dust collection chamber to achieve bottom dust removal; S5. Finally, the airflow from the blowing nozzle will produce downward pressure on the pole piece, which can balance the air damping generated by the porous air suspension plate below.