Laser cutting dust removal device

Abstract

The utility model 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 utility model relates to the technical field of pole piece processing device, concretely relates to a laser cutting dust collector. BACKGROUND

[0002] The application of battery is more and more extensive, and the pole piece is the main component of the battery. In the manufacturing process of the pole piece, using the laser cutting equipment is one of the main ways to manufacture the pole piece. In the cutting process, dust will be generated, if the dust adheres to the pole piece and is brought into the subsequent process, or even is rolled into the inside of the battery, it is easy to pierce the diaphragm in the battery cell, causing the micro short circuit of the battery, and even the battery self-ignition and explosion.

[0003] The laser cutting is through the laser head to irradiate the laser to the pole piece material belt to be cut, and the high temperature of the laser melts or gasifies the material on the surface of the pole piece material belt and the metal foil material in the middle of the pole piece material belt. In this process, dust will be generated, and the dust will diffuse in the cutting cavity and adhere to the adsorption belt and the pole piece, affecting the service life of the adsorption belt and causing pollution to the pole piece.

[0004] At present, the main dust removal way of laser cutting is to set the dust hood on one side of the cutting cavity, and to set the standard air knife on the opposite side of the dust hood to blow air to the cutting point. But this way mainly removes dust from the cutting point, and the dust removal range is too concentrated, and the airflow affects the stability of the pole piece at the cutting point, and then affects the laser cutting effect, resulting in that the blowing strength is not easy to control, and the dust removal effect is not ideal. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a laser cutting dust collector with small airflow disturbance and stable cutting.

[0006] The utility model solves the technical scheme that adopts:

[0007] A laser cutting dust collector, comprising: a cutting cavity, a first air blowing assembly, an air extraction assembly and a laser cutting assembly;

[0008] The cutting cavity comprises a top wall, a bottom wall and a front wall, the top wall is provided with a feeding port for the pole piece material belt to pass through, and the bottom wall is provided with a discharging port for the pole piece material belt to pass through;

[0009] 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 the laser to pass through, the laser cutting assembly is arranged adjacent to the cutting cavity, and the laser cutting assembly can emit the laser to pass through the cutting window and cut the material belt in the cutting cavity;

[0010] The first air blowing assembly is fixed to one side of the cutting cavity, and the air suction 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 suction assembly.

[0011] The first air blowing assembly is fixed to one side of the cutting cavity, and the air suction 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 suction assembly.

[0012] The laser cutting and dust removal device as described above, wherein the cutting cavity 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 the side of the rear wall away from the air suction assembly, and one side of the second air blowing block is fixed to the side of the front wall away from the air suction assembly.

[0014] The first air blowing block and the second air blowing block have a gap position, and the gap position is in communication with the material inlet and the material outlet.

[0015] The laser cutting and dust removal device as described above further comprises a material belt conveying assembly.

[0016] The rear wall is provided with a gap slot, the material belt conveying assembly passes through the gap slot 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 in the direction of the material outlet.

[0017] The laser cutting and dust removal device as described above, wherein the side of the cutting cavity adjacent to the air suction assembly is provided with a slot.

[0018] The bottom wall is fixed with a second air blowing assembly, and the second air blowing assembly is located between the slot and the material belt conveying assembly.

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

[0020] The laser cutting and 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 to the bottom wall and the rear wall, one side of the dust removal block facing the material belt conveying assembly is a first inclined surface, and the air blowing pipe is fixed to 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 in the direction of the first inclined surface.

[0023] The laser cutting dust removal device, the one side of the dust removal block towards 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] The laser cutting dust removal device, the length of the second air blowing assembly is D in the direction from the rear wall to the front wall, and the length of the material belt conveying assembly in the cutting cavity is d.

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

[0026] The laser cutting dust removal device, further comprising a waste edge material belt dust removal assembly, the waste edge material belt dust removal assembly partially extends into the cutting cavity from the discharge port, so as to adsorb the waste edge generated in the cutting process and take the waste edge out of the cutting cavity.

[0027] The laser cutting dust removal device, the waste edge material belt dust removal assembly comprises a support, a waste edge adsorption conveying belt, a dust extraction part and a dust removal brush.

[0028] The waste edge adsorption conveying belt is rotationally arranged on the support, the dust extraction part is provided with a dust extraction port, the support is partially located in the dust extraction port, and the dust removal brush is fixedly arranged on the dust extraction port and used to remove dust on the waste edge adsorption conveying belt.

[0029] The laser cutting dust removal device, the junction between the first air blowing block and / or the second air blowing block and the bottom wall is provided with a plurality of bottom air blowing ports.

[0030] The laser cutting dust removal device has the following beneficial effects:

[0031] The pole piece material belt enters from the feeding port and exits from the discharge port; during cutting, the laser cutting assembly emits laser light through the cutting window to cut the pole piece material belt in the cutting cavity, and the first air blowing assembly is started to blow air to blow the dust generated in the cutting process into the air extraction assembly, so that the adsorption of dust on the pole piece material belt is reduced. During cutting, the cutting surface of the pole piece material belt is perpendicular to the blowing direction of the first air blowing assembly, so that dust removal can be achieved while avoiding the direct impact of airflow on the cutting surface to cause the pole piece material belt to vibrate, and the air blowing ports are uniformly arranged on the side of the first air blowing assembly facing the air extraction assembly. Therefore, the pressure borne by the pole piece material belt in the cutting cavity is uniform, the airflow interference on the pole piece material belt is small, the relative position of the laser and the material belt is kept stable, and the cutting process can be stably performed. BRIEF DESCRIPTION OF DRAWINGS

[0032] The utility model is further described below in combination with the drawings and examples.

[0033] Figure 1is a structural schematic diagram of a laser cutting dust removal device omitting an air extraction assembly and a laser cutting assembly;

[0034] Figure 2 is one of partial structural schematic diagrams of a laser cutting dust removal device omitting an air extraction assembly and a laser cutting assembly;

[0035] Figure 3 is two of partial structural schematic diagrams of a laser cutting dust removal device omitting an air extraction assembly and a laser cutting assembly;

[0036] Figure 4 is a three-dimensional structural schematic diagram of a first air blowing assembly;

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

[0038] Figure 6 is a three-dimensional structural schematic diagram of an air extraction assembly;

[0039] The reference signs are as follows:

[0040] 1, cutting cavity; 11, top wall; 111, feeding port; 12, bottom wall; 121, discharging port; 13, front wall; 131, cutting window; 14, rear wall; 141, accommodation groove; 15, slot;

[0041] 2, first air blowing assembly; 21, first air blowing block; 22, second air blowing block; 23, gap position; 26, first speed regulating valve;

[0042] 3, air extraction assembly; 31, second speed regulating valve;

[0043] 5, material belt conveying assembly;

[0044] 61, dust removal block; 209, air blowing pipe;

[0045] 7, waste edge material belt dust removal assembly; 71, support; 72, waste edge adsorption conveying belt; 74, dust removal brush. DETAILED DESCRIPTION

[0046] The utility model discloses a concept, specific structure and the technical effect produced of the utility model will be clearly and completely described in the following combining with the embodiment and the drawing, to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all embodiments, on the basis of the embodiment of the utility model, the other embodiments obtained by the person skilled in the art without paying creative labor, all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can be composed of a better connection structure by adding or reducing the connection auxiliary parts according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined under the premise of not mutually contradictory conflict.

[0047] Reference Figure 1 , Figure 2 , Figure 6 A laser cutting dust removal device, comprising: a cutting cavity 1, a first blowing assembly 2, a gas suction assembly 3 and a laser cutting assembly;

[0048] The cutting cavity 1 comprises a top wall 11, a bottom wall 12 and a front wall 13, the top wall 11 is provided with a feeding port 111 for the passage of the pole piece material belt, and the bottom wall 12 is provided with a discharging port 121 for the passage of the pole piece material belt;

[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, the front wall 13 is provided with a cutting window 131 for the passage of the laser, the laser cutting assembly is arranged adjacent to the cutting cavity 1, and the laser cutting assembly can emit laser to cut the material belt in the cutting cavity 1 through the cutting window 131;

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

[0051] The first blowing assembly 2 is uniformly provided with a plurality of blowing ports on the side facing the gas suction assembly 3, and the blowing direction of the first blowing assembly 2 is perpendicular to the transmission direction of the pole piece material belt.

[0052] When the device is working, the pole piece strip enters from the inlet 111 and exits from the outlet 121; the laser cutting assembly emits laser through the cutting window 131 to cut the pole piece strip in the cutting cavity 1, and the first blowing assembly 2 is started to blow the dust generated in the cutting process into the air exhaust assembly 3, reducing the adsorption of the dust on the pole piece strip. When cutting, the cutting surface of the pole piece strip is perpendicular to the blowing direction of the first blowing assembly 2, and the blowing port is uniformly arranged on the side of the first blowing assembly 2 facing the air exhaust assembly, and the blowing port is uniformly distributed on the first blowing assembly 2, so that a relatively soft convection is generated in the cutting cavity 1, the dust diffused is effectively entered into the air exhaust assembly 3, and the stability of the pole piece cutting is avoided when the first blowing assembly 2 blows against the cutting point. Dust removal can avoid the airflow directly impacting the cutting surface to cause the pole piece strip to vibrate, so that the pole piece strip bears the same pressure in the cutting cavity 1, the airflow has little interference to the pole piece strip, the relative position of the laser and the strip is kept stable, and the cutting process can be stably carried out.

[0053] Specifically, the laser cutting assembly is used to cut the pole piece strip into pole pieces, and the cutting position is located on the side close to the air exhaust assembly 3 along the airflow direction. The amount of dust passing through the pole piece body is small, the path of the dust blown to the air exhaust assembly 3 is the shortest, and the amount of dust in the cutting cavity 1 is small at this time, thereby reducing the probability of dust adhering to the pole piece strip.

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

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

[0056] The first blowing block 21 and the second blowing block 22 have a gap position 23 therebetween, and the gap position 23 is in communication with the inlet 111 and the outlet 121.

[0057] The first blowing block 21 is responsible for blowing one side of the pole piece strip, the second blowing block 22 is responsible for blowing the other side of the pole piece strip, the airflow speed blown by the first blowing block 21 and the second blowing block 22 is the same, the pressure on both sides of the pole piece strip is the same, and the pole piece strip is less likely to deviate and swing.

[0058] Further, the strip conveying assembly 5 is further included;

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

[0060] Specifically, the feeding conveying assembly 5 is provided with a vacuum adsorption belt. When the vacuum adsorption belt rotates, the pole piece material belt is adsorbed, thereby driving the pole piece material belt to move.

[0061] Since the material belt conveying assembly 5 is partially located in the cutting cavity 1, when the first air blowing assembly 2 blows air, the material belt conveying assembly 5 will block part of the airflow. There is no airflow between the material belt conveying assembly 5 and the bottom wall 12, and dust is easily accumulated at this position. When the dust accumulated at this position reaches a certain amount, the dust is easily in contact with the pole piece material belt and is adsorbed on the pole piece material belt, thereby affecting the dust removal effect of the device. In order to solve the above technical problems, referring to Figures 1 to 4 , specifically, the side of the cutting cavity 1 adjacent to the air extraction assembly 3 is provided with a slot 15.

[0062] The bottom wall 12 is fixed with a second air blowing assembly, and the second air blowing assembly is located between the slot 15 and the material belt conveying assembly 5.

[0063] The blowing direction of the second air blowing assembly is towards the bottom wall 12, and the second air blowing assembly is used to blow the dust deposited between the material belt conveying assembly 5 and the bottom wall 12. The airflow of the second air blowing assembly changes direction after passing through the bottom wall 1, the dust is lifted, and the dust is blown to the side wall of the material belt conveying assembly 5. At the same time, the dust is extracted by the air extraction assembly 3. The second air blowing assembly and the air extraction assembly 3 cooperate with each other to solve the problem of dust accumulation between the material belt conveying assembly 5 and the bottom wall 12, ensure the stable transmission of the pole piece material belt, and further reduce the adsorption of dust on the pole piece material belt.

[0064] Referring to 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 to the bottom wall 12 and the rear wall 14, and one side of the dust removal block 61 facing the material belt conveying assembly 5 is a first inclined surface. The air blowing pipe 209 is fixed to 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 is an inclined surface for guiding the airflow. The airflow blown by the dust-removing air outlet 621 forms an angle with the bottom wall 12, so that the dust between the first inclined surface and the bottom wall 12 is blown towards the material belt conveying assembly 5. After being blocked by the material belt conveying assembly 5, the airflow drives the dust to be blown upwards into the dust extraction range of the dust extraction assembly 3, thereby reducing the accumulation of dust between the second air outlet assembly 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, which is arranged adjacent to the first inclined surface and the top edge of the second inclined surface intersects the top edge of the first inclined surface.

[0069] The second inclined surface is also used to guide the airflow blown by the dust-removing air outlet 621, thereby further reducing the accumulation of dust between the second air outlet assembly and the bottom wall 12.

[0070] In any of the above embodiments, in the direction from the rear wall 14 to the front wall 13, the length of the second air outlet assembly is D, and the length of the material belt conveying assembly 5 in the cutting cavity 1 is d; D and d satisfy the relationship: D>d. This ensures that there is no dust accumulation between the second air outlet assembly and the material belt conveying assembly 5, and ensures that there is gas flow everywhere in the cutting cavity 1, without dead angles for dust accumulation, thereby further reducing the possibility of dust adhering to the pole piece material belt.

[0071] In one embodiment, the waste edge material belt dust-removing assembly 7 is further included, which partially extends into the cutting cavity 1 from the discharge port 121 to absorb the waste edge generated in the cutting process and take the waste edge out of the cutting cavity 1.

[0072] In the cutting cavity 1, the pole piece material belt is absorbed by the material belt conveying assembly 5 and the waste edge material belt dust-removing assembly 7, and the pole piece material belt has two stable support points, thereby further reducing the shaking of the pole piece material belt during the cutting process.

[0073] Specifically, in the direction from the rear wall 14 to the front wall 13, the length of the waste edge material belt dust-removing assembly 7 in the cutting cavity 1 is less than the sum of d.

[0074] Referring to Figure 5 Further, the waste edge material belt dust-removing assembly 7 includes a support 71, a waste edge absorbing conveying belt 72, a dust extraction member, and a dust-removing brush 74.

[0075] The waste edge absorbing conveying belt 72 is rotatably arranged on the support 71, the dust extraction member is located below the support 71, the dust extraction member is provided with a dust extraction port, the support 71 is partially located in the dust extraction port, and the dust-removing brush 74 is fixedly arranged on the dust extraction port and used to remove the dust on the waste edge absorbing conveying belt 72.

[0076] Since the scrap edge adsorption conveying belt 72 is fixed to the pole piece material belt by adsorption force, part of the scrap edge adsorption conveying belt 72 in the cutting cavity 1 and not in contact with the scrap edge adsorption conveying belt 72 will adsorb a little dust. If not cleaned in time, the dust will accumulate on the scrap edge adsorption conveying belt 72, causing the scrap edge adsorption conveying belt 72 to be blocked, affecting the effect of adsorbing and fixing the scrap edge. Therefore, the dust removal brush 74 is arranged to remove the dust on the scrap edge adsorption conveying 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 member is minimized. After the dust on the scrap edge adsorption conveying belt 72 is swept off, it is sucked into the dust extraction member under the action of gravity and adsorption force, reducing the possibility of dust flying in the environment outside the device and improving the cleanliness of the work workshop.

[0078] The junction between the first air blowing block 21 and / or the second air blowing block 22 and the bottom wall 12 is provided with a plurality of bottom air blowing ports (not shown in the figure), which are used to blow away the dust deposited between the first air blowing block 21 and / or the second air blowing block 22 and the bottom wall 12, reducing the diffusion of dust in the cutting cavity 1.

[0079] In one embodiment, the first air blowing assembly 2 is provided with a first speed regulating valve 26 for controlling the air blowing speed, and / or the air extraction assembly 3 is provided with a second speed regulating valve 31 for controlling the air extraction speed. The air blowing speed of the first speed regulating valve 26 and the air extraction speed of the second speed regulating valve 31 are adjusted according to the amount of dust, reducing the content and residence time of dust in the cutting cavity 1, and further reducing the possibility of dust adhering to the pole piece material belt.

[0080] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A laser cutting dust removal device characterized by, The utility model relates to a cutting cavity (1), first blowing assembly (2), air extraction assembly (3) and laser cutting assembly are included: The cutting cavity (1) includes top wall (11), bottom wall (12) and front wall (13), is equipped with the inlet (111) of the passage of pole piece material belt on top wall (11), is equipped with the outlet (121) of the passage of pole piece material belt on bottom wall (12); Front wall (13) one end is connected top wall (11), front wall (13) other end is connected bottom wall (12), is equipped with the cutting window (131) of the passage of laser on front wall (13), laser cutting assembly is adjacent with cutting cavity (1) setting, laser cutting assembly can emit laser and cut the material belt in cutting cavity (1) through cutting window (131); First blowing assembly (2) is fixed in one side of cutting cavity (1), air extraction assembly (3) is equipped with in the other side of cutting cavity (1), and front wall (13) is located between first blowing assembly (2) and air extraction assembly (3); The one side of first blowing assembly (2) towards air extraction assembly (3) is evenly equipped with a plurality of blowing ports, and the blowing direction of first blowing assembly (2) is perpendicular to the transmission direction of pole piece material belt. The cutting cavity (1) further comprises a rear wall (14) disposed opposite to the front wall (13); 2. The laser cutting dust extraction apparatus of claim 1, wherein: The first blowing assembly (2) comprises a first blowing block (21) and a second blowing block (22), one side of the first blowing block (21) is fixed on the rear wall (14) away from the air extraction assembly (3), one side of the second blowing block (22) is fixed on the front wall (13) away from the air extraction assembly (3); The first blowing block (21) and the second blowing block (22) have a gap (23) therebetween, the gap (23) is in communication with the inlet (111) and the outlet (121). Further comprising a material belt conveying assembly (5); 3. The laser cutting dust extraction apparatus of claim 2, wherein: The rear wall (14) is provided with a gap slot (141), the material belt conveying assembly (5) passes through the gap slot (141) and is partially located in the cutting cavity (1), the material belt conveying assembly (5) is used to drive the material belt pole piece of the cutting cavity (1) to move along the outlet (121) direction. The side adjacent to the air extraction assembly (3) of the cutting cavity (1) is provided with a slot (15); 4. The laser cutting dust extraction apparatus of claim 3, wherein: The bottom wall (12) is fixed with a second blowing assembly, 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 assembly is towards the bottom wall (12), and the second blowing assembly is used to blow up the dust deposited between the material belt conveying assembly (5) and the bottom wall (12). The second blowing assembly comprises a dust removal block (61) and a blowing pipe (209); 5. The laser cutting dust extraction apparatus of claim 4, wherein: ​ The dust removal block (61) is fixed on the bottom wall (12) and the rear wall (14), one 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). A plurality of dust removal air blowing openings (621) are arranged on the air blowing pipe (209) and face the first inclined surface.

6. The laser cutting dust extraction apparatus of claim 5, wherein: One 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 extraction apparatus of claim 4 or 5, wherein: In the direction from the rear wall (14) to the front wall (13), the length of the second air blowing assembly is D, and the length of the material belt conveying assembly (5) in the cutting cavity (1) is d. D and d satisfy the relationship: D>d.

8. The laser cutting dust extraction apparatus of claim 1, wherein: The waste edge material belt dust removal assembly (7) is further included, the waste edge material belt dust removal assembly (7) partially extends into the cutting cavity (1) from the discharge port (121) to adsorb the waste edge generated in the cutting process and take the waste edge out of the cutting cavity (1).

9. The laser cutting dust extraction apparatus of claim 8, wherein: The waste edge material belt dust removal assembly (7) includes a support (71), a waste edge adsorption conveying belt (72), a dust extraction member and a dust removal brush (74). The waste edge adsorption conveying belt (72) is rotatably arranged on the support (71), the dust extraction member is provided with a dust extraction opening, the support (71) is partially arranged in the dust extraction opening, the dust removal brush (74) is fixedly arranged on the dust extraction opening, and the dust removal brush (74) is used to remove dust on the waste edge adsorption conveying belt (72).

10. The laser cutting dust extraction apparatus of claim 2, wherein: A plurality of bottom air blowing openings are arranged at the joint between the first air blowing block (21) and / or the second air blowing block (22) and the bottom wall (12).

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