Laser die cutting device with dust and waste removing function

Abstract

The invention relates to the technical field of laser die cutting, in particular to a laser die cutting device with a dust and waste removing function. Comprising a laser die cutting head, a conveying device, a cutting bottom plate, a dust adsorption assembly and a waste collecting assembly, the dust adsorption assembly comprises a dust collecting frame and is provided with an avoiding opening used for avoiding laser, a dust collecting plate is arranged beside the avoiding opening and communicates with a negative pressure device, and the dust collecting frame is further provided with two sheet material pressing rollers used for pressing foil sheets; a vacuum conveying belt for absorbing waste materials is arranged beside the conveying device, a separation air knife is arranged above the tail end of the vacuum conveying belt, and a second dust collecting device is arranged below the tail end of the vacuum conveying belt; an inclined shovel plate is arranged below the vacuum conveyor belt and provided with a discharging air knife pointing to the tail end of the conveyor belt. According to the invention, the separation rate of the sheet waste and the tab after cutting is greatly improved, residue-free collection is realized, the production efficiency is improved, dust is cleared in multiple directions, and the conductive efficiency of the tab and the quality of a pole piece are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser die cutting, in particular to a laser die cutting device with dust waste removal function. BACKGROUND

[0002] In the production scene of the pole piece tab laser cutting, the core requirement is to accurately cut the foil beside the pole piece by laser to form the tab. In the production and processing of the prior art, there are two ways of completely breaking and not completely breaking the foil when the laser cuts the shape of the tab. The traditional way of pulling the waste strip to realize the separation of waste and product and the collection of waste is only suitable for the case of not completely breaking. When collecting the sheet waste, the prior art has no tearing action with the tab and the pole piece, so the sheet waste is not easy to separate from the foil and is easy to stick to the tab and follow the tab to displace to the next station, or fall into the pole piece conveying path or stack in the gap of the device. The traditional device has defects in the separation function of the sheet waste. When the laser cuts the foil to form the tab, metal dust with a certain particle size is generated. The residual dust attached to the surface of the tab will reduce its welding conductivity, and falling into the active material area of the pole piece will cause the capacity attenuation of the pole piece. When the sheet waste is separated from the pole piece, the metal dust remaining on the cutting position of the pole piece, the tab and the sheet waste is easy to scatter in the air, thereby causing pollution to the cutting operation environment. The prior art lacks dust removal function in the separation process of the sheet waste. The above problems superimpose to cause low production efficiency of the tab with sheet waste and affect the product yield. SUMMARY

[0003] Therefore, it is necessary to provide a laser die cutting device with dust waste removal function in view of the problems of the prior art.

[0004] To solve the problems of the prior art, the technical scheme adopted by the present application is as follows: The present application provides a laser die cutting device with dust waste removal function, which comprises a laser die cutting head and a conveying device. A cutting bottom plate with vacuum adsorption function is arranged below the laser die cutting head. A dust adsorption assembly is arranged above the cutting bottom plate. A waste collection assembly is arranged at the end of the conveying device. The dust adsorption assembly comprises a dust collecting frame and has an avoiding opening for avoiding laser. A dust collecting plate is arranged beside the avoiding opening. The dust collecting plate is communicated with a negative pressure device. Two sheet material pressing rollers for pressing the foil are arranged on the dust collecting frame. The sheet material pressing roller close to the end of the conveying device is a blowing roller. A vacuum conveying belt for adsorbing waste is arranged beside the conveying device. A separation air knife is arranged above the end of the vacuum conveying belt. A second dust collecting device is arranged below the separation air knife. An inclined shovel plate is arranged below the vacuum conveying belt. A discharging air knife is arranged on the inclined shovel plate and the blowing direction points to the end of the vacuum conveying belt.

[0005] Preferably, a wind deflector is fitted on the outside of the blowing roller. The wind deflector is divided into a semi-circular shield and an air guide by a vertically arranged wind-blocking baffle. The semi-circular shield is located on the side of the wind deflector closer to the avoidance opening. The air guide is connected to the separating air knife, and the air direction of the separating air knife is vertically downward.

[0006] To address the issue that when sheet-like waste is blown off by the separating air knife, the rebounding airflow will disperse the residual dust on the surface, causing this dust to easily drift into the active material area of ​​the electrode, the following structure was designed: The second dust collection device consists of a guide frame fixedly installed at the end of the vacuum conveyor belt and a filter screen installed inside the guide frame. The guide frame is connected to the negative pressure device, and an arc-shaped plate is provided at the top of the guide frame. The distance between the arc-shaped plate and the surface of the vacuum conveyor belt forms a separation gap, which gradually decreases from top to bottom. The filter screen is installed on the arc-shaped plate and has the same curvature as the arc-shaped plate.

[0007] To address the issue that some sheet-like waste materials remain slightly adhered to the electrode tabs due to incomplete separation, the vacuum conveyor belt's suction force cannot completely break off the adhered parts, causing the waste materials to shift with the electrode or partially suspend on the conveyor belt, and the separation air knife cannot effectively blow them off, the following structure is provided: uniformly spaced material-pulling rods that can pass through the separation gap are fixedly installed on the surface of the vacuum conveyor belt. The spacing between the material-pulling rods is consistent with the distance between the two electrode tabs, and the material-pulling rods are connected to the surface of the vacuum conveyor belt through a connecting frame.

[0008] Preferably, the feeding rod is horizontally arranged and perpendicular to the transmission direction of the vacuum conveyor belt. The connecting frame is equipped with a slider, and the connecting frame and the slider are elastically connected by a spring. The feeding rod is fixedly installed on the slider. A limiting contact ring groove is also fixedly provided on the outside of the vacuum conveyor belt. A clamping rod that abuts against the limiting contact ring groove is installed on the slider. The limiting contact ring groove is provided with a retraction step. The retraction step is located at the corresponding position on the limiting contact ring groove that the feeding rod needs to avoid to prevent interference.

[0009] Preferably, there are two dust collection plates symmetrically arranged on both sides of the clearance opening along the transmission direction of the electrode plate. The dust collection plate is composed of a vertical plate and an inclined plate, the vertical plate and the inclined plate are connected, and several dust suction ports are evenly distributed on the dust collection plate. The two dust collection plates are connected to the dust extraction pipe installed on the top of the dust collection frame.

[0010] Preferably, the dust collection rack is equipped with a height adjustment device, which includes a linear driver and a lifting frame that is slidably mounted on the dust collection rack. The output end of the linear driver is fixedly connected to the lifting frame, and both sheet material pressure rollers are mounted on the lifting frame.

[0011] Preferably, the blowing roller has several ventilation holes, the top of the blowing roller has a brush roller that is in contact with its surface, and the baffle of the windproof cover has a dust extraction channel.

[0012] Preferably, the lifting frame is equipped with a rotary driver that drives the end of the blower roller shaft. The blower roller rotates in the same direction as the brush roller via a synchronous belt, that is, the contact part rotates in opposite directions.

[0013] Preferably, the semi-circular shield is connected to the material feeding air knife through an air duct.

[0014] The advantages of this invention compared to the prior art are: 1. This invention utilizes a blowing roller to simultaneously compress sheet-like waste material and blow airflow, preventing it from sticking to the roller body. A vacuum conveyor belt beside the conveying device uses negative pressure to adsorb and cut the sheet-like waste material, preventing it from scattering or sticking to the electrode tabs. A separating air knife at the end of the vacuum conveyor belt blows airflow, forcing the electrode tabs to separate from the sheet-like waste material and keeping the waste material tightly attached to the conveyor belt. A downward-facing shovel plate lifts up any remaining waste material on the conveyor belt surface, working in conjunction with the unloading air knife to thoroughly blow the waste material to the collection area. Furthermore, a material-pulling rod on the vacuum conveyor belt can move downwards along the separation gap, assisting in breaking the tiny adhesions between the sheet-like waste material and the electrode tabs, achieving complete separation. This entire structure enables efficient separation of sheet-like waste material from the electrode tabs, with no residue during collection, eliminating the need for manual cleaning, effectively reducing downtime, and significantly improving production efficiency.

[0015] 2. Two dust collection plates above the cutting base plate are connected to a negative pressure device, which can directionally adsorb vertically and obliquely diffused dust during laser cutting of foil, preventing dust from adhering to the tabs and plates. The guide frame of the second dust collection device works with the filter screen to capture residual dust after the sheet waste is blown by the separating air knife under negative pressure, achieving secondary dust removal after separation. The brush roller at the top of the blowing roller can remove dust adhering to the roller body, and the dust extraction channel at the baffle block promptly sucks away the dust brushed off by the brush roller and the dust blown off by the ventilation holes, preventing dust accumulation and diffusion. The full-process dust removal design significantly reduces the amount of dust adhering to the tab surface, effectively improving the conductivity of the tab, while preventing dust from falling into the active material area of ​​the electrode, ensuring the electrochemical performance of the electrode.

[0016] 3. This invention uses the vacuum adsorption function of the cutting base plate to fix the foil sheet, and the two material pressure rollers on the dust collection rack physically press the foil sheet and sheet waste material on the side of the electrode sheet, replacing the traction force limitation of traditional strip waste material, and avoiding the deviation of sheet waste material during cutting. At the same time, the avoidance opening precisely avoids the laser cutting path to prevent laser obstruction, ultimately greatly improving the cutting accuracy of the electrode tab, significantly reducing the deviation rate of sheet waste material, and ensuring the forming quality of the electrode tab.

[0017] 4. The air intake hood of the outer wind deflector of the blowing roller can collect unused airflow within the semi-circular shield and directionally convey it to the separating air knife, supplementing the airflow for separating the electrode tabs and sheet-like waste. Simultaneously, the unused airflow within the semi-circular shield is guided to the unloading air knife through the air intake duct, superimposing with the airflow from the independent fan to enhance the blowing force. This recycling of air resources significantly reduces the equipment's dependence on independent fans, reduces energy consumption, and achieves energy conservation and environmental protection. Attached Figure Description

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a laser die-cutting device with dust and waste removal function. Figure One ; Figure 2 A schematic diagram of the three-dimensional structure of a laser die-cutting device with dust and waste removal function. Figure Two ; Figure 3 This is a partial three-dimensional structural diagram of a laser die-cutting device with dust and waste removal function; Figure 4 This is a front view of a laser die-cutting device with dust and waste removal capabilities; Figure 5 A three-dimensional structural diagram of a dust adsorption component in a laser die-cutting device with dust and waste removal function. Figure One ; Figure 6 A three-dimensional structural diagram of a dust adsorption component in a laser die-cutting device with dust and waste removal function. Figure Two ; Figure 7 This is a three-dimensional structural diagram of the blowing roller and wind deflector in a laser die-cutting device with dust and waste removal function; Figure 8 A three-dimensional structural diagram of a vacuum conveyor belt, feeding rod, and separating air knife in a laser die-cutting device with dust and waste removal function. Figure One ; Figure 9 A three-dimensional structural diagram of a vacuum conveyor belt, feeding rod, and separating air knife in a laser die-cutting device with dust and waste removal function. Figure Two ; Figure 10 yes Figure 5 A schematic diagram of the three-dimensional structure at point A in the middle.

[0019] The numbers on the map are: 1. Laser die-cutting head; 2. Conveying device; 3. Cutting base plate; 4. Dust collection rack; 5. Clearance opening; 6. Dust collection plate; 7. Sheet pressure roller; 8. Blowing roller; 9. Vacuum conveyor belt; 10. Separating air knife; 12. Angled shovel plate; 13. Discharge air knife; 14. Windbreak baffle; 15. Semi-circular shield; 16. Exhaust hood; 17. Guide frame; 18. Filter screen; 19. Separation gap; 20. Material guide bar; 21. 21. Connecting frame; 22. Slider; 23. Spring; 24. Limiting contact groove; 25. Clamping rod; 26. Retraction step; 27. Vertical plate; 28. Inclined plate; 29. ​​Dust extraction pipe; 30. Linear actuator; 31. Lifting frame; 32. Ventilation hole; 33. Brush roller; 34. Dust extraction channel; 35. Rotary actuator; 36. Synchronous belt; 37. Exhaust duct; 38. Electrode plate; 39. Electrode lug; 40. Foil sheet. Detailed Implementation

[0020] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-10 The laser die-cutting device shown includes a laser die-cutting head 1 and a conveying device 2. A cutting base plate 3 with vacuum adsorption function is provided below the laser die-cutting head 1. A dust adsorption component is provided above the cutting base plate 3. A waste collection component is provided at the end of the conveying device 2. The dust adsorption component includes a dust collection frame 4 with a clearance opening 5 for avoiding the laser. A dust collection plate 6 is provided next to the clearance opening 5. The dust collection plate 6 is connected to a negative pressure device. Two sheet material pressure rollers 7 for pressing foil sheets 40 are also provided on the dust collection frame 4. The sheet material pressure roller 7 near the end of the conveying device 2 is a blowing roller 8. A vacuum conveyor belt 9 for adsorbing waste is provided next to the conveying device 2. A separation air knife 10 is provided above the end of the vacuum conveyor belt 9. A second dust collection device is provided below the separation air knife 10. An inclined shovel plate 12 is installed below the vacuum conveyor belt 9. A feeding air knife 13 is provided on the inclined shovel plate 12 and the blowing direction is directed towards the end of the vacuum conveyor belt 9.

[0022] Two sheet material pressure rollers 7 are installed on the dust collection rack 4 above the cutting base plate 3. The sheet material pressure roller 7 near the end of the conveying device 2 is designed as a blowing roller 8. The sheet material pressure roller 7 directly presses the foil 40 next to the electrode and the sheet waste generated during cutting. It provides a limit for the sheet waste through physical pressing, replacing the traction limit of the strip waste, and preventing the sheet waste from shifting during cutting. The blowing roller 8 blows air while pressing, preventing the sheet waste from sticking to the roller surface and rotating with the sheet material pressure roller 7. The cutting base plate 3 has a vacuum adsorption function, which can adsorb the foil 40 and prevent the foil 40 from shifting and affecting the cutting of the electrode tab 39. The clearance 5 above the cutting base plate 3 is used to avoid the path of laser cutting electrode tab 39 and prevent laser obstruction. The dust collection plate 6 on the side is connected to the negative pressure device to directionally adsorb the metal dust generated when laser cutting foil 40, preventing dust from adhering to electrode tab 39, electrode plate 38 and contaminating the working environment.

[0023] A vacuum conveyor belt 9 is installed beside the conveying device 2. Utilizing the negative pressure characteristic of the sheet-like waste material, it adsorbs the cut sheet-like waste material, preventing it from scattering or sticking to the tabs 39. A separating air knife 10 above the end of the vacuum conveyor belt 9 blows airflow, removing the sheet-like waste material from the conveyor belt, separating the tabs 39 from the sheet-like waste material, and ensuring it adheres tightly to the surface of the vacuum conveyor belt 9. A slanted shovel 12 below lifts the sheet-like waste material adhering to the surface of the vacuum conveyor belt 9, and, in conjunction with the unloading air knife 13, blows any remaining sheet-like waste material to the collection area, preventing adhesion. This invention improves the cutting accuracy of the tabs 39, reduces the sheet-like waste material offset rate, ensures separation of sheet-like waste material from the tabs 39, ensures residue-free collection of sheet-like waste material, eliminates the need for manual cleaning, increases production efficiency, reduces dust adhesion on the surface of the tabs 39, and improves conductivity.

[0024] A wind deflector is fitted on the outside of the blowing roller 8. The wind deflector is divided into a semi-circular shield 15 and an air guide 16 by a vertically arranged wind-blocking baffle 14. The semi-circular shield 15 is located on the side of the wind deflector close to the avoidance opening 5. The air guide 16 is connected to the separating air knife 10. The air direction of the separating air knife 10 is vertically downward.

[0025] A wind deflector is provided on the outside of the blowing roller 8, and a semi-circular shield 15 covers the side of the blowing roller 8 near the electrode tab 39 where it separates. The forced airflow acts only on the edge of the sheet waste, which can enhance the force of tearing the electrode tab 39 and the sheet waste, and also prevent the airflow from contacting the foil 40 in the laser working area, preventing dust from being blown onto the electrode or the electrode tab 39. The air guide hood 16 collects the unused airflow inside the semi-circular shield 15 and directs it to the separation air knife 10 to provide wind power for separating the electrode tab 39 and the sheet waste.

[0026] When the sheet-like waste is blown off by the separating air knife 10, the airflow rebound will shake off the dust remaining on the surface again. This dust is easy to drift to the active material area of ​​the electrode sheet. If the sheet-like waste blown off by the separating air knife 10 is deformed at the edges and corners, it is easy to get stuck in the gap of the collection device. This not only affects the subsequent waste collection, but also generates dust during cleaning, further polluting the environment. In order to solve the above problems, the following structure is designed: the second dust collection device consists of a guide frame 17 fixedly installed at the end of the vacuum conveyor belt 9 and a filter screen 18 installed in the guide frame 17. The guide frame 17 is connected to the negative pressure device. The top of the guide frame 17 is provided with an arc plate. The distance between the arc plate and the surface of the vacuum conveyor belt 9 forms a separation gap 19, and the separation gap 19 gradually decreases from top to bottom. The filter screen 18 is installed on the arc plate and has the same curvature as the arc plate.

[0027] The second dust collection device consists of a guide frame 17 and a filter screen 18. The flaky waste head, separated only after being blown by the separating air knife 10, is guided by the guide frame 17 to move along the separation gap 19 after separation and gradually adhere to the surface of the vacuum adsorption belt. A filter screen 18 with the same curvature is installed on the inner side of the arc-shaped plate. When the negative pressure device is working, dust in the air at the separation position is blown into the guide frame 17 by the separating air knife, capturing residual dust from the flaky waste after being blown by the separating air knife 10, achieving secondary dust removal after separation. The reduced separation gap 19, combined with the arc-shaped plate, prevents the edges of the flaky waste from deforming and getting stuck in the gap, ensuring that the waste falls smoothly into the collection area.

[0028] Some sheet-like waste material remains slightly adhered to the electrode tab 39 due to incomplete separation. The suction force of the vacuum conveyor belt 9 cannot completely break off the adhered parts, causing the waste material to shift with the electrode or partially suspend on the conveyor belt. When the separating air knife 10 cannot effectively blow it off, the following structure is provided. The vacuum conveyor belt 9 is fixedly mounted with evenly spaced material-pulling rods 20 that can pass through the separation gap 19. The spacing between the material-pulling rods 20 is the same as the distance between the two tabs 39. The material-pulling rods 20 are connected to the surface of the vacuum conveyor belt 9 through the connecting frame 21.

[0029] Material-pulling rods 20 are installed on the surface of the vacuum conveyor belt 9 via connecting brackets 21. The spacing of the material-pulling rods 20 is consistent with the spacing between the two tabs 39 on the electrode sheet, ensuring that each material-pulling rod 20 corresponds to one piece of sheet waste. As the conveyor belt moves, the material-pulling rods 20 move from top to bottom along the separation gap 19 before the sheet waste reaches the position of the separating air knife 10. The end of the material-pulling rod 20 contacts the sheet waste, assisting the adsorption force of the vacuum conveyor belt 9 in breaking the slight adhesion between the material and the tab 39, thus achieving complete separation.

[0030] The feeding rod 20 is horizontally set and perpendicular to the transmission direction of the vacuum conveyor belt 9. The connecting frame 21 is equipped with a slider 22. The connecting frame 21 and the slider 22 are elastically connected by a spring 23. The feeding rod 20 is fixedly installed on the slider 22. A limiting contact ring groove 24 is also fixedly provided on the outside of the vacuum conveyor belt 9. A clamping rod 25 that abuts against the limiting contact ring groove 24 is installed on the slider 22. A retraction step 26 is provided on the limiting contact ring groove 24. The retraction step 26 is located at the corresponding position on the limiting contact ring groove 24 that the feeding rod 20 needs to avoid to prevent interference.

[0031] To prevent the material feeding rod 20 from interfering with other parts of the equipment during the displacement of the vacuum conveyor belt 9, a retraction step 26 area is set on the limiting contact ring groove 24. When the pressing rod 25 reaches this area, it pushes the slider 22 to compress the spring 23, and the material feeding rod 20 automatically retracts to avoid structures such as the wind deflector and the blowing roller 8.

[0032] Two dust collection plates 6 are symmetrically arranged on both sides of the clearance opening 5 along the transmission direction of the electrode plate 38. The dust collection plate 6 is composed of a vertical plate 27 and an inclined plate 28. The vertical plate 27 and the inclined plate 28 are connected. Several dust suction ports are evenly distributed on the dust collection plate 6. The two dust collection plates 6 are connected to the dust extraction pipe 29 installed on the top of the dust collection frame 4.

[0033] Two dust collection plates 6 correspond to the dust diffusion paths near and far from the electrode during the separation of sheet-like waste, respectively, completely covering the dust on both sides. The dust collection plate 6 consists of a vertical plate 27 and an inclined plate 28. The vertical plate 27 adsorbs cutting dust in the vertical direction, thus efficiently adsorbing dust during laser operation.

[0034] The dust collection rack 4 is equipped with a height adjustment device, which includes a linear driver 30 and a lifting frame 31 that is slidably mounted on the dust collection rack 4. The output end of the linear driver 30 is fixedly connected to the lifting frame 31, and both sheet material pressure rollers 7 are mounted on the lifting frame 31.

[0035] The existing sheet material pressure roller 7 has a fixed height, which cannot adapt to electrode sheets and foils 40 of different thicknesses. Firstly, for thick foils 40 (0.1mm), the pressure force of the fixed-height roller is insufficient to form a sufficient "pre-separation force." The self-adjusting height of the sheet material pressure roller 7 can adapt to foils 40 of different thicknesses. By precisely controlling the pre-separation force, it can prevent adhesion and pressure damage, thus improving the overall applicability of the equipment.

[0036] The blowing roller 8 has several ventilation holes 32, and the top of the blowing roller 8 has a brush roller 33 that is in contact with its surface. The baffle of the windproof cover has a dust extraction channel 34.

[0037] Ventilation holes 32 allow airflow to penetrate into the gap between the waste material and the roller body, preventing flaky waste material from sticking to the surface of the roller body; the brush roller 33 at the top rotates with the blowing roller 8 to remove dust and other particles stuck to the blowing roller 8; a dust extraction channel 34 is provided at the baffle plate of the wind shield, which is connected to the negative pressure device to promptly suck away the dust brushed off by the brush roller 33 and the dust blown off by the ventilation holes 32, preventing dust from accumulating on the surface of the blowing roller 8 or spreading.

[0038] The lifting frame 31 is equipped with a rotary driver 35 that drives the shaft end of the blower roller 8. The blower roller 8 rotates in the same direction as the brush roller 33 via the synchronous belt 36, that is, the contact part rotates in opposite directions.

[0039] The blower roller 8 and the brush roller 33 are connected by a synchronous belt 36. The brush roller 33 and the blower roller 8 are in contact with each other. During the rotation in the same direction, the brush roller 33 and the blower roller 8 are in opposite displacement directions at the contact position, so that the brush roller 33 can achieve the cleaning effect on the blower roller 8.

[0040] The semi-circular shield 15 is connected to the material discharge air knife 13 through the air duct 37.

[0041] The semi-circular shield 15 and the unloading air knife 13 are connected by the air duct 37. The unused airflow in the semi-circular shield 15 is guided to the unloading air knife 13, and superimposed with the airflow of the independent fan to enhance the blowing force; make full use of wind resources and reduce consumption.

[0042] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A laser die-cutting device with dust and waste removal function, characterized in that, The device includes a laser die-cutting head (1) and a conveying device (2). Below the laser die-cutting head (1) is a cutting base plate (3) with vacuum adsorption function. Above the cutting base plate (3) is a dust adsorption assembly. At the end of the conveying device (2) is a waste collection assembly. The dust adsorption assembly includes a dust collection rack (4) with a clearance opening (5) for avoiding the laser beam. A dust collection plate (6) is located beside the clearance opening (5). The dust collection plate (6) is connected to a negative pressure device. The dust collection rack (4) also has two clamping foils (…). 40) The sheet material pressure roller (7) near the end of the conveying device (2) is a blowing roller (8). A vacuum conveyor belt (9) for adsorbing waste is provided on the side of the conveying device (2). A separation air knife (10) is provided above the end of the vacuum conveyor belt (9). A second dust collection device is provided below the separation air knife (10). An inclined shovel plate (12) is installed below the vacuum conveyor belt (9). A feeding air knife (13) is provided on the inclined shovel plate (12) and the blowing direction is directed towards the end of the vacuum conveyor belt (9).

2. The laser die-cutting device with dust and waste removal function according to claim 1, characterized in that, A wind deflector is fitted on the outside of the blowing roller. The wind deflector is divided into a semi-circular shield (15) and an air guide (16) by a vertically arranged wind-blocking baffle (14). The semi-circular shield (15) is located on the side of the wind deflector close to the avoidance opening (5). The air guide (16) is connected to the separation air knife (10). The air direction of the separation air knife (10) is vertically downward.

3. The laser die-cutting device with dust and waste removal function according to claim 2, characterized in that, The second dust collection device consists of a guide frame (17) fixedly installed at the end of the vacuum conveyor belt (9) and a filter screen (18) installed inside the guide frame (17). The guide frame (17) is connected to the negative pressure device. An arc plate is provided at the top of the guide frame (17). The distance between the arc plate and the surface of the vacuum conveyor belt (9) forms a separation gap (19), and the separation gap (19) gradually decreases from top to bottom. The filter screen (18) is installed on the arc plate and has the same curvature as the arc plate.

4. A laser die-cutting device with dust and waste removal function according to claim 3, characterized in that, The vacuum conveyor belt (9) is fixedly installed with evenly spaced push rods (20) that can pass through the separation gap (19). The spacing between the push rods (20) is the same as the spacing between the two tabs (39). The push rods (20) are connected to the surface of the vacuum conveyor belt (9) through the connecting frame (21).

5. A laser die-cutting device with dust and waste removal function according to claim 4, characterized in that, The feeding rod (20) is set horizontally and perpendicular to the transmission direction of the vacuum conveyor belt (9). The connecting frame (21) is provided with a slider (22). The connecting frame (21) and the slider (22) are elastically connected by a spring (23). The feeding rod (20) is fixedly installed on the slider (22). The vacuum conveyor belt (9) is also fixedly provided with a limiting contact ring groove (24). The slider (22) is provided with a clamping rod (25) that abuts against the limiting contact ring groove (24). The limiting contact ring groove (24) is provided with a retraction step (26). The retraction step (26) is located at the corresponding position on the limiting contact ring groove (24) that the feeding rod (20) needs to avoid to prevent interference.

6. A laser die-cutting device with dust and waste removal function according to claim 1, characterized in that, Two dust collection plates (6) are provided and symmetrically arranged on both sides of the clearance opening (5) along the transmission direction of the electrode plate (38). The dust collection plate (6) is composed of a vertical plate (27) and an inclined plate (28). The vertical plate (27) and the inclined plate (28) are connected. Several dust suction ports are evenly distributed on the dust collection plate (6). The two dust collection plates (6) are connected to the dust extraction pipe (29) installed on the top of the dust collection frame (4).

7. A laser die-cutting device with dust and waste removal function according to claim 1, characterized in that, The dust collection rack (4) is equipped with a height adjustment device, which includes a linear driver (30) and a lifting frame (31) that is slidably set on the dust collection rack (4). The output end of the linear driver (30) is fixedly connected to the lifting frame (31), and the two sheet material pressure rollers (7) are both installed on the lifting frame (31).

8. A laser die-cutting device with dust and waste removal function according to claim 2, characterized in that, The blowing roller (8) has several ventilation holes (32), and the top of the blowing roller (8) is provided with a brush roller (33) that is in contact with its surface. The baffle of the wind shield is provided with a dust extraction channel (34).

9. A laser die-cutting device with dust and waste removal function according to claim 8, characterized in that, The lifting frame (31) is equipped with a rotary driver (35) that drives the shaft end of the blower roller (8). The blower roller (8) rotates in the same direction as the brush roller (33) via a synchronous belt (36), that is, the contact part rotates in opposite directions.

10. A laser die-cutting device with dust and waste removal function according to claim 2, characterized in that, The semi-circular shield (15) is connected to the material feeding air knife (13) through the air duct (37).

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