Laser cutting dust removal device

Abstract

The invention discloses a laser cutting dust removal device. The laser cutting dust removal device comprises a cutting cavity, a first air blowing assembly, an air exhaust assembly and a laser cutting assembly. The cutting cavity comprises a top wall, a bottom wall and a front wall, a feeding port is formed in the top wall, and a discharging port is formed in the bottom wall; one end of the front wall is connected with the top wall, the other end of the front wall is connected with the bottom wall, the front wall is provided with a cutting window for laser to penetrate through, the laser cutting assembly is adjacent to the cutting cavity, and the laser cutting assembly can emit laser to penetrate through the cutting window and cut a material belt in the cutting cavity; the first air blowing assembly is fixed to one side of the cutting cavity, the air exhaust assembly is arranged on the other side of the cutting cavity, and the front wall is located between the first air blowing assembly and the air exhaust assembly. A plurality of air blowing openings are uniformly formed in the surface, facing the air exhaust assembly, of the first air blowing assembly, and the air blowing direction of the first air blowing assembly is perpendicular to the conveying direction of the pole piece material belt. When the laser cutting dust removal device is applied, disturbance of airflow to a pole piece material belt is small, and cutting stability is good.

Description

Technical Field

[0001] The invention relates to the technical field of pole piece processing devices, and in particular to a laser cutting dust removal device. Background Art

[0002] Batteries are increasingly used, and pole pieces are the main component of batteries. In the manufacturing process of pole pieces, the use of laser cutting equipment is one of the main ways to manufacture pole pieces. Dust is generated during the cutting process. If this dust adheres to the pole piece and is brought into the subsequent process, or even rolled into the battery, it is easy to pierce the diaphragm in the battery cell, causing a micro short circuit in the battery, or even spontaneous combustion and explosion of the battery.

[0003] Laser cutting is to irradiate the laser head onto the pole piece strip to be cut. The high temperature of the laser melts or vaporizes the material on the surface of the pole piece strip and the metal foil in the middle of the pole piece strip. Dust is generated in the process. The dust diffuses in the cutting cavity and adheres to the adsorption belt and pole piece, which affects the service life of the adsorption belt and pollutes the pole piece.

[0004] At present, the main dust removal method for laser cutting is to set a dust hood on one side of the cutting chamber, and set a standard air knife on the opposite side of the dust hood to blow air to the cutting point. However, this method mainly removes dust at the cutting point, the dust removal range is too concentrated, and the airflow affects the stability of the pole piece at the cutting point, thereby affecting the laser cutting effect, resulting in poor control of the blowing force and unsatisfactory dust removal effect. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a laser cutting dust removal device with small airflow disturbance and stable cutting.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A laser cutting dust removal device comprises: a cutting chamber, a first air blowing component, an air extraction component and a laser cutting component;

[0008] The cutting cavity comprises a top wall, a bottom wall and a front wall, the top wall is provided with an inlet for the electrode sheet strip to pass through, and the bottom wall is provided with an outlet for the electrode sheet strip to pass through;

[0009] One end of the front wall is connected to the top wall, and the other end of the front wall is connected to the bottom wall. A cutting window for laser to pass through is provided on the front wall. The laser cutting assembly is arranged adjacent to the cutting cavity. The laser cutting assembly can emit laser to pass through the cutting window and cut the material strip in the cutting cavity.

[0010] The first air blowing component is fixed to one side of the cutting chamber, the air extraction component is arranged on the other side of the cutting chamber, and the front wall is located between the first air blowing component and the air extraction component;

[0011] A plurality of blowing ports are evenly arranged on a side of the first blowing component facing the vacuum component, and a blowing direction of the first blowing component is perpendicular to a transmission direction of the pole piece strip.

[0012] The laser cutting dust removal device as described above, wherein the cutting chamber further comprises a rear wall arranged opposite to the front wall;

[0013] The first air blowing assembly comprises a first air blowing block and a second air blowing block, one side of the first air blowing block is fixed to a side of the rear wall away from the air extraction assembly, and one side of the second air blowing block is fixed to a side of the front wall away from the air extraction assembly;

[0014] There is a gap between the first air blowing block and the second air blowing block, and the gap is connected to the inlet and the outlet.

[0015] The laser cutting dust removal device as described above further includes a material belt conveying assembly;

[0016] The rear wall is provided with a clearance groove, the material belt conveying assembly passes through the clearance groove and is partially located in the cutting cavity, and the material belt conveying assembly is used to drive the material belt pole piece of the cutting cavity to move along the direction of the discharge port.

[0017] The laser cutting dust removal device as described above, wherein a groove is provided on one side of the cutting chamber adjacent to the exhaust assembly;

[0018] A second blowing assembly is fixed on the bottom wall, and the second blowing assembly is located between the slot and the material belt conveying assembly;

[0019] The blowing direction of the second air blowing component is toward the bottom wall, and the second air blowing component is used to blow up the dust deposited between the material belt conveying component and the bottom wall.

[0020] The laser cutting dust removal device as described above, wherein the second air blowing assembly comprises a dust removal block and an air blowing pipe;

[0021] The dust removal block is fixed on the bottom wall and the rear wall, the side of the dust removal block facing the material belt conveying assembly is a first inclined surface, and the air blowing pipe is fixed on the top of the inclined surface of the dust removal block;

[0022] The air blowing pipe is provided with a plurality of dust removal air blowing ports facing the first inclined surface.

[0023] In the laser cutting dust removal device as described above, the side of the dust removal block facing the front wall is a second inclined surface, the second inclined surface is arranged adjacent to the first inclined surface, and the top edge of the second inclined surface intersects with the top edge of the first inclined surface.

[0024] In the laser cutting dust removal device as described above, along the direction from the rear wall to the front wall, the length of the second blowing assembly is D, and the length of the material belt conveying assembly in the cutting chamber is d;

[0025] D and d satisfy the relationship: D>d.

[0026] The laser cutting dust removal device as described above also includes a waste edge material belt dust removal component, and the waste edge material belt dust removal component partially extends from the discharge port into the cutting cavity to absorb the waste edges generated during the cutting process and bring the waste edges out of the cutting cavity.

[0027] The laser cutting dust removal device as described above, wherein the scrap edge material belt dust removal assembly comprises a support member, a scrap edge adsorption conveyor belt, a dust extraction member and a dust removal brush;

[0028] The scrap edge adsorption conveyor belt is rotatably arranged on the support member, the dust extraction member is provided with a dust extraction port, the support member is partially located in the dust extraction port, the dust removal brush is fixedly arranged on the dust extraction port, and the dust removal brush is used to remove dust on the scrap edge adsorption conveyor belt.

[0029] As described above, in the laser cutting dust removal device, a plurality of bottom blowing ports are provided at the connection between the first blowing block and / or the second blowing block and the bottom wall.

[0030] The beneficial effects of the present invention are:

[0031] The pole piece material strip enters from the inlet and exits from the outlet; during cutting, the laser cutting component emits laser through the cutting window to cut the pole piece material strip located in the cutting cavity, and at the same time starts the first blowing component to blow the dust generated during the cutting process into the exhaust component to reduce the adsorption of dust on the pole piece material strip. During cutting, the cutting surface of the pole piece material strip is perpendicular to the blowing direction of the first blowing component, and dust removal can prevent the airflow from directly impacting the cutting surface and causing the pole piece material strip to shake. The air blowing port is evenly arranged on the side of the first blowing component facing the exhaust component, so the pressure on the pole piece material strip in various places in the cutting cavity is consistent, the airflow has little interference with the pole piece material strip, and the relative position of the laser and the material strip remains stable, ensuring that the cutting process can be carried out stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1It is a schematic diagram of the structure of the laser cutting dust removal device omitting the exhaust component and the laser cutting component;

[0034] Figure 2 It is one of the schematic diagrams of the structure of the laser cutting dust removal device omitting the exhaust component and the laser cutting component;

[0035] Figure 3 This is the second schematic diagram of the structure of the laser cutting dust removal device omitting the exhaust component and the laser cutting component;

[0036] Figure 4 is a schematic diagram of the three-dimensional structure of the first blowing component;

[0037] Figure 5 It is a three-dimensional structural schematic diagram of the waste edge material belt dust removal component;

[0038] Figure 6 It is a three-dimensional structural schematic diagram of the air extraction component;

[0039] The reference numerals are as follows:

[0040] 1. Cutting cavity; 11. Top wall; 111. Inlet; 12. Bottom wall; 121. Outlet; 13. Front wall; 131. Cutting window; 14. Back wall; 141. Make way slot; 15. Slotting;

[0041] 2. First air blowing assembly; 21. First air blowing block; 22. Second air blowing block; 23. Clearance position; 26. First speed regulating valve;

[0042] 3. Air extraction assembly; 31. Second speed regulating valve;

[0043] 5. Material belt conveyor assembly;

[0044] 61. Dust removal block; 209. Air blowing pipe;

[0045] 7. Waste edge material belt dust removal assembly; 71. Support member; 72. Waste edge adsorption conveyor belt; 74. Dust removal brush. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0047] Reference Figure 1 , Figure 2 , Figure 6 , a laser cutting dust removal device, comprising: a cutting chamber 1, a first blowing component 2, an exhaust component 3 and a laser cutting component;

[0048] The cutting chamber 1 comprises a top wall 11, a bottom wall 12 and a front wall 13. The top wall 11 is provided with an inlet 111 for the electrode sheet strip to pass through, and the bottom wall 12 is provided with an outlet 121 for the electrode sheet strip to pass through.

[0049] One end of the front wall 13 is connected to the top wall 11, and the other end of the front wall 13 is connected to the bottom wall 12. A cutting window 131 for laser to pass through is provided on the front wall 13. The laser cutting assembly is arranged adjacent to the cutting cavity 1. The laser cutting assembly can emit laser through the cutting window 131 and cut the material strip in the cutting cavity 1.

[0050] The first blowing assembly 2 is fixed to one side of the cutting chamber 1, the exhaust assembly 3 is arranged on the other side of the cutting chamber 1, and the front wall 13 is located between the first blowing assembly 2 and the exhaust assembly 3;

[0051] A plurality of blowing ports are evenly arranged on one side of the first blowing component 2 facing the vacuum component 3 , and the blowing direction of the first blowing component 2 is perpendicular to the transmission direction of the electrode strip.

[0052] When the device is working, the pole piece material strip enters from the feed port 111 and exits from the discharge port 121; the laser cutting component emits laser through the cutting window 131 to cut the pole piece material strip in the cutting cavity 1, and at the same time starts the first blowing component 2 to blow the dust generated during the cutting process into the exhaust component 3 to reduce the adsorption of dust on the pole piece material strip. During cutting, the cutting surface of the pole piece strip is perpendicular to the blowing direction of the first blowing component 2, and the blowing ports are evenly arranged on the side of the first blowing component 2 facing the exhaust component, and the blowing ports are evenly distributed in the first blowing component 2, so that relatively soft convection is generated in the cutting cavity 1, so that the diffused dust can effectively enter the exhaust component 3, and at the same time, it is avoided that the first blowing component 2 blows towards the cutting point to affect the stability of the pole piece cutting. While removing dust, it can avoid the airflow directly impacting the cutting surface and causing the pole piece strip to shake. Therefore, the pressure on the pole piece strip at various places in the cutting cavity 1 is consistent, the airflow has little interference with the pole piece strip, and the relative position of the laser and the strip remains stable, ensuring that the cutting process can be carried out stably.

[0053] Specifically, the laser cutting component is used to cut the pole piece strip into pole pieces, and the cutting position is located on the side close to the vacuum component 3. Along the airflow direction, the amount of dust passing through the pole piece body will be less, and the path for the dust to be blown to the vacuum component 3 is also the shortest. At this time, the amount of dust in the cutting chamber 1 is small, reducing the probability of dust adhering to the pole piece strip.

[0054] In one embodiment, the cutting chamber 1 further comprises a rear wall 14 arranged opposite to the front wall 13;

[0055] The first blowing assembly 2 includes a first blowing block 21 and a second blowing block 22, one side of the first blowing block 21 is fixed to a side of the rear wall 14 away from the air extraction assembly 3, and one side of the second blowing block 22 is fixed to a side of the front wall 13 away from the air extraction assembly 3;

[0056] A gap 23 is defined between the first air blowing block 21 and the second air blowing block 22 , and the gap 23 is communicated with the material inlet 111 and the material outlet 121 .

[0057] The first blowing block 21 is responsible for blowing air to one side of the pole piece material strip, and the second blowing block 22 is responsible for blowing air to the other side of the pole piece material strip. The air flow speeds blown out by the first blowing block 21 and the second blowing block 22 are the same, the pressures on both sides of the pole piece material strip are the same, and the pole piece material strip rarely deviates and swings.

[0058] Furthermore, it also includes a material belt conveying component 5;

[0059] The rear wall 14 is provided with a clearance groove 141, the material belt conveyor assembly 5 passes through the clearance groove 141 and is partially located in the cutting cavity 1, and the material belt conveyor assembly 5 is used to drive the material belt pole piece of the cutting cavity 1 to move along the direction of the discharge port 121. The material belt conveyor assembly 5 serves as a power source to move the material belt pole piece in a single direction.

[0060] Specifically, a vacuum adsorption belt is provided on the feeding conveyor assembly 5. When the vacuum adsorption belt rotates, it adsorbs the pole piece material belt, thereby driving the pole piece material belt to move.

[0061] Since the material belt conveyor assembly 5 is partially located in the cutting chamber 1, when the first blowing assembly 2 blows air, the material belt conveyor assembly 5 will block part of the airflow, and there is no airflow between the material belt conveyor assembly 5 and the bottom wall 12, so dust is easily accumulated here. When the dust here accumulates to a certain amount, it is easy to contact with the pole piece material belt and be adsorbed on the pole piece material belt, thereby affecting the dust removal effect of the device. In order to solve the above technical problems, refer to Figures 1 to 4 Specifically, a groove 15 is provided on one side of the cutting chamber 1 adjacent to the exhaust assembly 3;

[0062] A second blowing assembly is fixed on the bottom wall 12, and the second blowing assembly is located between the slot 15 and the material belt conveying assembly 5;

[0063] The blowing direction of the second blowing assembly is toward the bottom wall 12, and the second blowing assembly is used to blow up the dust deposited between the material belt conveyor assembly 5 and the bottom wall 12. The airflow of the second blowing assembly changes direction after passing through the bottom wall 1, and the dust rises and blows toward the side wall of the material belt conveyor assembly 5, while the exhaust assembly 3 extracts the dust. The second blowing assembly cooperates with the exhaust assembly 3 to solve the problem of dust accumulation between the material belt conveyor assembly 5 and the bottom wall 12, and further reduces the adsorption of dust on the electrode sheet material belt while ensuring the smooth transmission of the electrode sheet material belt.

[0064] Reference Figure 4 , more specifically, the second air blowing assembly includes a dust removal block 61 and an air blowing pipe 209;

[0065] The dust removal block 61 is fixed on the bottom wall 12 and the rear wall 14, the side of the dust removal block 61 facing the material belt conveying assembly 5 is a first inclined surface, and the air blowing pipe 209 is fixed on the top of the inclined surface of the dust removal block 61;

[0066] The air blowing pipe 209 is provided with a plurality of dust removal air blowing ports 621 facing the first inclined surface.

[0067] The first inclined surface serves as an inclined surface for guiding the airflow. The airflow blown out of the dust removal blowing port 621 forms an angle with the bottom wall 12, thereby blowing the dust between the first inclined surface and the bottom wall 12 toward the direction of the material belt conveying component 5. After the airflow is blocked by the material belt conveying component 5, the dust is driven to blow upward and enter the dust extraction range of the exhaust component 3, thereby reducing the accumulation of dust between the second blowing component and the bottom wall 12.

[0068] More specifically, one side of the dust removing block 61 facing the front wall 13 is a second inclined surface, the second inclined surface is arranged adjacent to the first inclined surface, and the top edge of the second inclined surface intersects with the top edge of the first inclined surface.

[0069] The second inclined surface is also used to guide the direction of the air flow blown out of the dust removal air outlet 621, further reducing the accumulation of dust between the second air blowing assembly and the bottom wall 12.

[0070] In any of the above embodiments, along the direction from the rear wall 14 to the front wall 13, the length of the second blowing assembly is D, and the length of the material belt conveyor assembly 5 in the cutting chamber 1 is d; D and d satisfy the relationship: D>d. It is ensured that there is no dust accumulation between the second blowing assembly and the material belt conveyor assembly 5, and that there is gas flow everywhere in the cutting chamber 1, and there is no dead corner for dust accumulation, which further reduces the possibility of dust adhesion on the pole piece material belt.

[0071] In one embodiment, a waste edge material belt dust removal component 7 is also included, and a portion of the waste edge material belt dust removal component 7 extends from the discharge port 121 into the cutting chamber 1 to absorb the waste edges generated during the cutting process and bring the waste edges out of the cutting chamber 1.

[0072] In the cutting chamber 1, the pole piece strip is adsorbed by the strip conveying assembly 5 and the waste strip dust removal assembly 7, and the pole piece strip has two stable supporting points, which further reduces the shaking of the pole piece strip during the cutting process.

[0073] Specifically, along the direction from the rear wall 14 to the front wall 13 , the sum of the length of the scrap strip dust removal assembly 7 located in the cutting chamber 1 and d is less than D.

[0074] Reference Figure 5 , further, the scrap edge material belt dust removal assembly 7 includes a support member 71, a scrap edge adsorption conveyor belt 72, a dust extraction member and a dust removal brush 74;

[0075] The scrap edge adsorption conveyor belt 72 is rotatably arranged on the support member 71, the dust extraction member is located below the support member 71, the dust extraction member is provided with a dust extraction port, the support member 71 is partially located in the dust extraction port, the dust removal brush 74 is fixed on the dust extraction port, and the dust removal brush 74 is used to remove dust on the scrap edge adsorption conveyor belt 72.

[0076] Since the scrap edge adsorption conveyor belt 72 fixes the electrode material belt by adsorption force, the scrap edge adsorption conveyor belt 72 that is partly in the cutting cavity 1 and not in contact with the scrap edge adsorption conveyor belt 72 will adsorb a small amount of dust. If it is not cleaned in time, the dust will accumulate on the scrap edge adsorption conveyor belt 72, causing the scrap edge adsorption conveyor belt 72 to be blocked, affecting the effect of adsorbing and fixing the scrap edge. Therefore, a dust removal brush 74 is provided to remove the dust on the scrap edge adsorption conveyor belt 72;

[0077] The dust removal brush 74 is fixed on the dust extraction port so that the distance between the dust removal brush 74 and the dust extraction part is minimized. After the dust on the waste edge adsorption conveyor belt 72 is swept away, it is sucked into the dust extraction part under the action of gravity and adsorption force, thereby reducing the possibility of dust flying in the environment outside the device and improving the cleanliness of the workshop.

[0078] A plurality of bottom blowing ports (not shown in the figure) are provided at the connection between the first blowing block 21 and / or the second blowing block 22 and the bottom wall 12, and the bottom blowing ports are used to blow away dust deposited between the first blowing block 21 and / or the second blowing block 22 and the bottom wall 12, thereby reducing the diffusion of dust in the cutting chamber 1.

[0079] In one embodiment, the first blowing assembly 2 is provided with a first speed regulating valve 26 for controlling the blowing speed, and / or the exhaust assembly 3 is provided with a second speed regulating valve 31 for controlling the exhaust speed. The blowing speed of the first speed regulating valve 26 and the exhaust speed of the second speed regulating valve 31 are adjusted according to the amount of dust, so as to reduce the content and retention time of dust in the cutting chamber 1, and further reduce the possibility of dust adhering to the pole piece strip.

[0080] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A laser cutting dust removal device, characterized in that: include: A cutting chamber (1), a first air blowing component (2), an air extraction component (3), and a laser cutting component; The cutting chamber (1) comprises a top wall (11), a bottom wall (12) and a front wall (13); the top wall (11) is provided with an inlet (111) for the electrode sheet strip to pass through, and the bottom wall (12) is provided with an outlet (121) for the electrode sheet strip to pass through; One end of the front wall (13) is connected to the top wall (11), and the other end of the front wall (13) is connected to the bottom wall (12); a cutting window (131) is provided on the front wall (13) for laser to pass through; the laser cutting component is arranged adjacent to the cutting cavity (1); the laser cutting component is capable of emitting laser light through the cutting window (131) and cutting the material strip in the cutting cavity (1); The first air blowing component (2) is fixed to one side of the cutting chamber (1), the air extraction component (3) is arranged on the other side of the cutting chamber (1), and the front wall (13) is located between the first air blowing component (2) and the air extraction component (3); A plurality of blowing ports are evenly arranged on a side of the first blowing component (2) facing the exhaust component (3), and the blowing direction of the first blowing component (2) is perpendicular to the transmission direction of the pole piece strip.

2. The laser cutting dust removal device according to claim 1, characterized in that: The cutting cavity (1) further comprises a rear wall (14) arranged opposite to the front wall (13); The first air blowing assembly (2) comprises a first air blowing block (21) and a second air blowing block (22), one side of the first air blowing block (21) is fixed to a side of the rear wall (14) away from the air extraction assembly (3), and one side of the second air blowing block (22) is fixed to a side of the front wall (13) away from the air extraction assembly (3); A gap (23) is provided between the first air blowing block (21) and the second air blowing block (22), and the gap (23) is connected to the material inlet (111) and the material outlet (121).

3. The laser cutting dust removal device according to claim 2, characterized in that: It also includes a material belt conveying component (5); The rear wall (14) is provided with a clearance groove (141), the material belt conveying assembly (5) passes through the clearance groove (141) and is partially located in the cutting cavity (1), and the material belt conveying assembly (5) is used to drive the material belt pole piece of the cutting cavity (1) to move along the direction of the discharge port (121).

4. The laser cutting dust removal device according to claim 3, characterized in that: A groove (15) is provided on one side of the cutting chamber (1) adjacent to the air extraction component (3); A second blowing assembly is fixed on the bottom wall (12), and the second blowing assembly is located between the slot (15) and the material belt conveying assembly (5); The blowing direction of the second blowing component is toward the bottom wall (12), and the second blowing component is used to blow up the dust deposited between the material belt conveying component (5) and the bottom wall (12).

5. The laser cutting dust removal device according to claim 4, characterized in that: The second air blowing assembly comprises a dust removal block (61) and an air blowing pipe (209); The dust removal block (61) is fixed on the bottom wall (12) and the rear wall (14); the side of the dust removal block (61) facing the material belt conveying assembly (5) is a first inclined surface; and the air blowing pipe (209) is fixed on the top of the inclined surface of the dust removal block (61); The air blowing pipe (209) is provided with a plurality of dust removal air blowing ports (621) facing the first inclined surface.

6. The laser cutting dust removal device according to claim 5, characterized in that: The side of the dust removal block (61) facing the front wall (13) is a second inclined surface, the second inclined surface is arranged adjacent to the first inclined surface, and the top edge of the second inclined surface intersects with the top edge of the first inclined surface.

7. The laser cutting dust removal device according to claim 4 or 5, characterized in that: Along the direction from the rear wall (14) to the front wall (13), the length of the second blowing assembly is D, and the length of the material belt conveying assembly (5) in the cutting chamber (1) is d; D and d satisfy the relationship: D>d.

8. The laser cutting dust removal device according to claim 1, characterized in that: It also includes a waste edge material belt dust removal component (7), wherein a portion of the waste edge material belt dust removal component (7) extends from the discharge port (121) into the cutting chamber (1) to absorb the waste edges generated during the cutting process and bring the waste edges out of the cutting chamber (1).

9. The laser cutting dust removal device according to claim 8, characterized in that: The scrap edge material belt dust removal assembly (7) comprises a support member (71), a scrap edge adsorption conveyor belt (72), a dust extraction member and a dust removal brush (74); The scrap edge adsorption conveyor belt (72) is rotatably arranged on the support member (71); the dust extraction member is provided with a dust extraction port; a portion of the support member (71) is located in the dust extraction port; the dust removal brush (74) is fixedly arranged on the dust extraction port; and the dust removal brush (74) is used to remove dust on the scrap edge adsorption conveyor belt (72).

10. The laser cutting dust removal device according to claim 2, characterized in that: A plurality of bottom blowing ports are provided at the connection between the first blowing block (21) and / or the second blowing block (22) and the bottom wall (12).

Images