Smoke prevention mechanism of laser cutting device

Abstract

The invention discloses a smoke prevention mechanism of a laser cutting device, which relates to the technical field of laser cutting and comprises a base frame, a top frame is fixedly mounted at the top of the base frame, a driving mechanism is fixedly mounted on the outer side of the top frame, and a cutting mechanism is fixedly mounted on one side of the driving mechanism. And an air inducing mechanism is fixedly mounted on the outer side of the cutting mechanism. By the adoption of the structure, the purifying mechanism and the air inducing mechanism are arranged, smoke generated by laser cutting can be efficiently treated during operation, the suction fan generates negative pressure, the smoke is sucked into the filter box and the activated carbon filter element through the hose and the air inducing hopper to be effectively purified, the air inducing hopper moves along with the laser cutting head, and the purifying efficiency is improved; the dustproof separation net filters small impurities, large particles are prevented from damaging equipment, meanwhile, the second motor drives the sliding frame and the brush plate to clean the dustproof separation net, the air inducing capacity is ensured, and the overall smoke prevention effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cutting, and particularly relates to a smoke prevention mechanism for a laser cutting device. Background Art

[0002] A laser cutting device is a high-precision and high-efficiency processing equipment. Its core working principle is to use the laser beam emitted by a laser. After being focused by an optical path system, a laser beam with a high power density is formed. When the laser beam irradiates the surface of a workpiece, it will cause the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the melted or vaporized metal. As the relative position of the beam and the workpiece moves, finally a cut is formed in the material, thus achieving the purpose of cutting. The laser cutting device has various advantages, including high precision, fast cutting speed, not limited by cutting pattern restrictions, automatic layout to save materials, smooth cut, low processing cost, etc. At the same time, the mechanical part of the laser cutter head has no contact with the workpiece and will not scratch the surface of the workpiece; the cutting heat-affected zone is small, the sheet metal deformation is small, the cut is narrow, there is no mechanical stress at the cut, no shear burr, high processing precision, and good repeatability. During the working process of the laser cutting device, smoke and dust will be generated. These smoke and dust will not only affect the working environment but also may pose a hazard to the health of the operators.

[0003] Chinese Patent with the publication number of "CN220073554U" discloses a laser cutting smoke and dust absorption structure, which includes a laser cutting mechanism. A filter box for treating flue gas is arranged outside the laser cutting mechanism, and a gas collection mechanism that operates synchronously with it is fixedly connected below the laser cutting mechanism; a gas collection area is formed on one side of the gas collection mechanism facing the cutting head of the laser cutting mechanism to absorb the cutting flue gas, and the gas collection mechanism and the filter box are communicated. In this solution, by arranging a gas collection mechanism that moves with the laser cutting mechanism on the side of the laser cutting mechanism, and the opening position of the gas collection mechanism is a flat structure, the airflow movement is accelerated, and the collection effect of the flue gas is improved. The flue gas enters the filter box through the gas collection mechanism for treatment and then is discharged. Compared with the method of sucking from below in the comparative document, the extraction effect of the flue gas is improved, and the impact of the cutting flue gas on the workers is reduced.

[0004] During the use of the above device, although it can assist in adsorbing flue gas and can achieve a certain anti-smoke effect, there are still certain defects and deficiencies during its specific use. During its use, the laser cutting device will generate soot, which contains a mixture of soot or aerosol with extremely fine particles. If these soot are not treated, they will not only harm the health of operators, but may also damage the laser equipment itself, affecting the cutting accuracy and the normal operation of the equipment. Regarding the anti-smoke device, however, if large-particle impurities in the flue gas enter the connecting pipe, it will have a certain impact on the filtration and purification efficiency. These large-particle impurities will block the pores of the activated carbon purification core, reducing the overall purification adsorption capacity and thus lowering the purification efficiency. It can be seen that the existing equipment has certain defects and needs to be improved. Summary of the Invention

[0005] Aiming at the problems mentioned in the background technology, the purpose of the present invention is to provide an anti-smoke mechanism for a laser cutting device to solve the problems proposed in the background technology.

[0006] The above technical object of the present invention is achieved through the following technical solutions:

[0007] An anti-smoke mechanism for a laser cutting device includes a base frame. A top frame is fixedly installed on the top of the base frame. A driving mechanism is fixedly installed on the outside of the top frame. A cutting mechanism is fixedly installed on one side of the driving mechanism. An air guiding mechanism is fixedly installed on the outside of the cutting mechanism. A purification mechanism is fixedly installed on the top of the base frame. The purification mechanism is connected and communicated with the air guiding mechanism. Both ends inside the base frame are rotatably connected with conveyor belts. The cutting mechanism is arranged between the inner sides of the conveyor belts;

[0008] The cutting mechanism includes side plates. The side plates are fixedly installed on one side of the driving mechanism. The cutting mechanism includes a telescopic cylinder. The telescopic cylinder is fixedly installed at the outer end of the side plate. The bottom output end of the telescopic cylinder penetrates through the side plate and is fixedly installed with a fixed seat. A laser cutting head is fixedly installed at the bottom of the fixed seat. The base frame serves as the supporting part of the entire device, stably carrying other components. The top frame is fixedly installed on the top of the base frame, providing a stable working environment for the driving mechanism and the cutting mechanism. The driving mechanism is the key part that drives the cutting mechanism to work. It can drive the cutting mechanism to perform precise cutting operations. The cutting mechanism is the core of the entire device. It includes parts such as side plates, a telescopic cylinder, a fixed seat, and a laser cutting head. The telescopic cylinder can drive the laser cutting head to move up and down to adapt to the cutting requirements of materials with different thicknesses. The laser cutting head is the key component to achieve the cutting function. It uses a laser beam to quickly and precisely cut materials. The role of the air guiding mechanism is to timely adsorb and guide the flue gas generated during the cutting process to the purification mechanism for treatment.

[0009] As a preferred technical solution, the driving mechanism includes a support frame which is arranged in a concave shape and fixedly installed at the middle part of the outer side of the top frame. A chute is opened at the top of the support frame. A lead screw is rotatably connected inside the chute. A sliding block is threadedly connected to the outer surface of the lead screw. The sliding block is slidably connected to the inner side of the chute. A first motor is fixedly installed at one side of the upper end of the support frame. The output end of the first motor penetrates through the support frame and is fixedly connected to one end of the lead screw. The side plate is fixedly installed at one side of the slider. The support frame is designed in a concave shape and is firmly fixedly installed at the middle part of the outer side of the top frame, providing stable support for the entire driving mechanism. A chute is opened at the top of the support frame, and a lead screw is rotatably connected inside the chute. This design allows the lead screw to rotate freely inside the chute while maintaining its stability. A sliding block is threadedly connected to the outer surface of the lead screw, and the sliding block is slidably connected to the inner side of the chute. This structure enables the sliding block to slide along the lead screw inside the chute when the lead screw rotates, thereby achieving lateral displacement. A first motor is fixedly installed at one side of the upper end of the support frame, and the output end of the first motor penetrates through the support frame and is fixedly connected to one end of the lead screw. By starting the first motor, the lead screw can be driven to rotate, and then the sliding block can be driven to slide inside the chute. This driving method not only has high precision but also fast response speed, and can meet the requirements of the laser cutting head for accurate positions.

[0010] As a preferred technical solution, the air guiding mechanism includes side connection plates which are fixedly installed on both sides of the side plate. A connecting frame is fixedly installed on the outer side of the side connection plates. An air guiding hopper is fixedly installed on the outer side of the connecting frame. A hose is fixedly installed on the outer side of the air guiding hopper and is communicated with the purification mechanism. A cleaning component is fixedly installed between the inner sides of the telescopic cylinder and the sliding block on the side plate. A dust-proof partition net is fixedly installed inside the air guiding hopper. The overall cross-sectional shape of the air guiding hopper is arranged in an isosceles trapezoid. The side connection plates are fixedly installed on both sides of the side plate, not only providing stable support for other components but also ensuring the stability of the entire air guiding mechanism.

[0011] As a preferred technical solution, the cleaning component includes a fixing frame which is fixedly installed at the top of the side plate and located between the inside of the sliding block and the side connection plate. A threaded rod is rotatably connected inside the fixing frame. A second motor is fixedly installed at the top of the fixing frame, and the output end of the second motor is fixedly connected to one end of the threaded rod. A carriage is threadedly connected to the outer surface of the threaded rod. The carriage is slidably connected to the inside of the fixing frame. Brush plates are fixedly installed at the lower ends on both sides of the carriage, and the outer sides of the brush plates are in fit connection with the dust-proof net inside the air induction hopper. The fixing frame is fixedly installed at the top of the side plate and located between the inside of the sliding block and the side connection plate, providing stable support for the entire cleaning component. Inside the fixing frame, a threaded rod is rotatably connected. This threaded rod is driven by the second motor at the top of the fixing frame. When the second motor is started, it will drive the threaded rod to rotate. A carriage is threadedly connected to the outer surface of the threaded rod. This design enables the carriage to slide up and down along the threaded rod when the threaded rod rotates. At the same time, the carriage is slidably connected to the inside of the fixing frame, ensuring the stability of the carriage during movement.

[0012] As a preferred technical solution, the overall cross-sectional shape of the sliding block and the sliding block is cross-shaped. The inner cross-sectional shape of the fixing frame and the upper cross-sectional shape of the carriage are both set to be square. The overall cross-sectional shape of the sliding block and the sliding block is cross-shaped. This design provides better structural strength and stability, ensuring that the movement of the sliding block driven by the lead screw is more stable and accurate. At the same time, the cross-shaped cross-sectional shape also helps to disperse the force, reducing the probability of deformation or damage caused by uneven force.

[0013] As a preferred technical solution, the purification mechanism includes a filter box which is fixedly installed at the top of the base frame. An activated carbon filter element is slidably connected inside the filter box. A sealing plate is fixedly installed on the outer side of the activated carbon filter element. An air suction fan is fixedly installed at one end of the filter box away from the connection with the hose. The input end of the air suction fan is communicated with the inside of the filter box. The filter box is fixedly installed at the top of the base frame, providing a closed space for accommodating and filtering harmful gases. Inside the filter box, an activated carbon filter element is slidably connected. This is a highly efficient adsorption material that can adsorb and remove harmful substances in the gas. Through the sliding design, the activated carbon filter element can be conveniently replaced or cleaned to ensure its continuous and efficient filtration and purification performance.

[0014] As a preferred technical solution, fixing plates are fixedly installed at both ends of the sealing plate. Installation screws are threadedly connected to the outer ends of the fixing plates. The fixing plates are connected to the filter box through the installation screws. The design of the sealing plate plays a key role in the purification mechanism. It not only ensures the airtightness inside the filter box, preventing the leakage of harmful gases during the filtration process, but also plays a role in fixing and protecting the activated carbon filter element.

[0015] In summary, the present invention mainly has the following beneficial effects:

[0016] First, by setting up a purification mechanism and an air induction mechanism, when the device is running, it can efficiently process the fumes generated by laser cutting. The suction fan generates negative pressure, and the fumes are sucked into the filter box through a hose and an air induction hopper. The activated carbon filter core effectively purifies the fumes. The air induction hopper moves with the laser cutting head, improving the purification efficiency. The dust-proof net filters fine impurities, preventing large particles from damaging the equipment. At the same time, the second motor drives the carriage and the brush plate to clean the dust-proof net, ensuring the air induction capacity and enhancing the overall anti-smoke effect;

[0017] Second, by setting up a driving mechanism and a cutting mechanism, the device can flexibly adjust the position of the laser cutting head. When in use, the first motor is started to drive the lead screw to rotate, causing the sliding block to slide horizontally in the chute, thereby driving the laser cutting head to move horizontally. At the same time, the telescopic cylinder can drive the cutting head to move downward to achieve linear cutting processing. This design improves the cutting processing ability and adaptability of the device, making it convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the bottom view structural schematic diagram of the present invention;

[0020] Figure 3 is the structural schematic diagram of the cutting mechanism and the air induction mechanism of the present invention;

[0021] Figure 4 is the structural schematic diagram of the cutting mechanism and the air induction mechanism of the present invention.

[0022] Reference Signs: 1, base frame; 2, top frame; 3, driving mechanism; 31, support frame; 32, chute; 33, lead screw; 34, sliding block; 35, first motor; 4, conveyor belt; 5, purification mechanism; 51, filter box; 52, activated carbon filter core; 53, sealing plate; 54, suction fan; 55, fixed plate; 56, mounting screw; 6, air induction mechanism; 61, side connection plate; 62, connecting frame; 63, air induction hopper; 64, hose; 65, dust-proof net; 66, cleaning assembly; 661, fixed frame; 662, threaded rod; 663, second motor; 664, carriage; 665, brush plate; 7, cutting mechanism; 71, side plate; 72, telescopic cylinder; 73, fixed seat; 74, laser cutting head. DETAILED DESCRIPTION OF THE INVENTION

[0023] Embodiment

[0024] Reference Figures 1 to 4, A smoke prevention mechanism of a laser cutting device in this embodiment includes a base frame 1. A top frame 2 is fixedly installed on the top of the base frame 1. A driving mechanism 3 is fixedly installed on the outer side of the top frame 2. A cutting mechanism 7 is fixedly installed on one side of the driving mechanism 3. An air guiding mechanism 6 is fixedly installed on the outer side of the cutting mechanism 7. A purification mechanism 5 is fixedly installed on the top of the base frame 1. The purification mechanism 5 is communicated with the air guiding mechanism 6. Both ends inside the base frame 1 are rotatably connected with a conveyor belt 4. The cutting mechanism 7 is arranged between the inner sides of the conveyor belt 4;

[0025] The cutting mechanism 7 includes side plates 71. The side plates 71 are fixedly installed on one side of the driving mechanism 3. The cutting mechanism 7 includes a telescopic cylinder 72. The telescopic cylinder 72 is fixedly installed at the outer end of the side plate 71. The bottom output end of the telescopic cylinder 72 penetrates through the side plate 71 and is fixedly installed with a fixed seat 73. A laser cutting head 74 is fixedly installed at the bottom of the fixed seat 73. The base frame 1 serves as the supporting part of the entire device, stably carrying other components. The top frame 2 is fixedly installed on the top of the base frame 1, providing a stable working environment for the driving mechanism 3 and the cutting mechanism 7. The driving mechanism 3 is the key part that drives the cutting mechanism 7 to work, and it can drive the cutting mechanism 7 to perform precise cutting operations. The cutting mechanism 7 is the core of the entire device, and it includes parts such as side plates 71, a telescopic cylinder 72, a fixed seat 73, and a laser cutting head 74. The telescopic cylinder 72 can drive the laser cutting head 74 to move up and down to adapt to the cutting requirements of materials with different thicknesses. The laser cutting head 74 is the key component to achieve the cutting function, and it uses a laser beam to quickly and precisely cut the material. The function of the air guiding mechanism 6 is to timely adsorb and guide the smoke generated during the cutting process to the purification mechanism 5 for treatment. It adsorbs the smoke into the filter box 51 through a hose 64 and an air guiding hopper 63, and then purifies and adsorbs it through an activated carbon filter element 52 to effectively remove harmful substances in the smoke. The purification mechanism 5 is responsible for further purifying the smoke guided by the air guiding mechanism 6 to ensure that the discharged smoke meets the environmental protection standards. It filters and adsorbs the smoke through an internal filtration system to remove particulate matter and harmful gases in it. In addition, the device is equipped with a conveyor belt 4, which can automatically convey the material to be cut to the cutting area for processing, improving the work efficiency.

[0026] Reference Figures 1 - 4, the driving mechanism 3 includes a support frame 31 which is arranged in a concave shape. The support frame 31 is fixedly installed in the middle of the outer side of the top frame 2. A chute 32 is formed at the top of the support frame 31. A lead screw 33 is rotatably connected inside the chute 32. A sliding block 34 is threadedly connected to the outer surface of the lead screw 33. The sliding block 34 is slidably connected to the inner side of the chute 32. One side of the upper end of the support frame 31 is fixedly installed with a first motor 35. The output end of the first motor 35 penetrates through the support frame 31 and is fixedly connected to one end of the lead screw 33. The side plate 71 is fixedly installed on one side of the sliding block. The support frame 31 is designed in a concave shape and is stably fixedly installed in the middle of the outer side of the top frame 2, providing stable support for the entire driving mechanism 3. A chute 32 is formed at the top of the support frame 31, and a lead screw 33 is rotatably connected inside the chute 32. This design allows the lead screw 33 to rotate freely inside the chute 32 while maintaining its stability. A sliding block 34 is threadedly connected to the outer surface of the lead screw 33, and the sliding block 34 is also slidably connected to the inner side of the chute 32. This structure enables the sliding block 34 to slide along the lead screw 33 inside the chute 32 when the lead screw 33 rotates, thereby achieving a lateral displacement. One side of the upper end of the support frame 31 is fixedly installed with a first motor 35. The output end of the first motor 35 penetrates through the support frame 31 and is fixedly connected to one end of the lead screw 33. By starting the first motor 35, the lead screw 33 can be driven to rotate, and then the sliding block 34 can be driven to slide inside the chute 32. This driving method not only has high precision but also fast response speed, and can meet the requirements of the laser cutting head 74 for precise positions. The side plate 71 is fixedly installed on one side of the sliding block 34, and the laser cutting head 74 is installed on the side plate 71 through a telescopic cylinder 72. Therefore, when the sliding block 34 moves under the drive of the lead screw 33, the side plate 71 and the laser cutting head 74 will also move accordingly, thereby achieving the lateral displacement of the laser cutting head 74. This design enables the laser cutting head 74 to flexibly move to the required position for precise cutting operations.

[0027] Reference Figures 1 - 4, the air induction mechanism 6 includes side connection plates 61 which are fixedly installed on both sides of the side plate 71. An attachment bracket 62 is fixedly installed on the outer side of the side connection plate 61. An air induction hopper 63 is fixedly installed on the outer side of the attachment bracket 62. A flexible hose 64 is fixedly installed on the outer side of the air induction hopper 63. The flexible hose 64 communicates with the purification mechanism 5. A cleaning assembly 66 is fixedly installed on the side plate 71 between the inner sides of the telescopic cylinder 72 and the sliding block 34. A dust-proof partition net 65 is fixedly installed on the inner side of the air induction hopper 63. The overall cross-sectional shape of the air induction hopper 63 is arranged in an isosceles trapezoid. The side connection plates 61 are fixedly installed on both sides of the side plate 71, which not only provides stable support for other components but also ensures the stability of the entire air induction mechanism 6. The attachment bracket 62 is fixedly installed on the outer side of the side connection plate 61, and its function is to fix and support the air induction hopper 63. The design of the air induction hopper 63 takes into account the concentration and guiding effect of the wind. The flexible hose 64 is fixedly installed on its outer side, and the flexible hose 64 communicates with the purification mechanism 5 to ensure that the adsorbed flue gas can be smoothly introduced into the purification mechanism 5 for treatment. It is particularly worth mentioning that the cleaning assembly 66 is fixedly installed on the side plate 71 between the inner sides of the telescopic cylinder 72 and the sliding block 34. This design aims to automatically clean the impurities in the air induction mechanism 6 to ensure that the air induction capacity of the air induction hopper 63 is not affected. At the same time, the dust-proof partition net 65 is fixedly installed on the inner side of the air induction hopper 63 to effectively filter the fine impurities in the flue gas and prevent large particle impurities from entering the interior of the air induction mechanism 6 and causing damage to the equipment. In addition, the overall cross-sectional shape of the air induction hopper 63 is arranged in an isosceles trapezoid, and this design helps to better concentrate and guide the wind and improve the air induction effect.

[0028] Reference Figures 1 - 4, the cleaning component 66 includes a fixing frame 661. The fixing frame 661 is fixedly installed at the top of the side plate 71 and is located between the inner sides of the sliding block 34 and the side connection plate 61. A threaded rod 662 is rotatably connected inside the fixing frame 661. A second motor 663 is fixedly installed at the top of the fixing frame 661. The output end of the second motor 663 is fixedly connected to one end of the threaded rod 662. A carriage 664 is threadedly connected to the outer surface of the threaded rod 662. The carriage 664 is slidably connected to the inner side of the fixing frame 661. Brush plates 665 are fixedly installed at the lower ends on both sides of the carriage 664. The outer sides of the brush plates 665 are in close fit connection with the dust-proof net 65 inside the air guide hopper 63. The fixing frame 661 is fixedly installed at the top of the side plate 71, between the inner sides of the sliding block 34 and the side connection plate 61, providing stable support for the entire cleaning component 66. Inside the fixing frame 661, a threaded rod 662 is rotatably connected. This threaded rod 662 is driven by the second motor 663 at the top of the fixing frame 661. When the second motor 663 is started, it will drive the threaded rod 662 to rotate. A carriage 664 is threadedly connected to the outer surface of the threaded rod 662. This design enables the carriage 664 to slide up and down along the threaded rod 662 when the threaded rod 662 rotates. At the same time, the carriage 664 is slidably connected to the inner side of the fixing frame 661, ensuring the stability of the carriage 664 during movement. Brush plates 665 are fixedly installed at the lower ends on both sides of the carriage 664. The outer sides of these brush plates 665 are in close fit with the dust-proof net 65 inside the air guide hopper 63. When the carriage 664 slides up and down driven by the threaded rod 662, the brush plates 665 will also move accordingly to brush and clean the dust-proof net 65. This design can automatically and effectively remove the impurities attached to the dust-proof net 65, ensuring the filtering effect of the dust-proof net 65 and the air guiding ability of the air guide hopper 63.

[0029] Reference Figures 1 - 4 , the overall cross-sectional shape of the sliding block 34 and the sliding block 34 is cross-shaped. The inner cross-sectional shape of the fixing frame 661 and the upper cross-sectional shape of the carriage 664 are both set to square. The overall cross-sectional shape of the sliding block 34 and the sliding block 34 is cross-shaped. This design provides better structural strength and stability, ensuring that the movement of the sliding block 34 driven by the lead screw 33 is smoother and more accurate. At the same time, the cross-shaped cross-sectional shape also helps to disperse the force, reducing the probability of deformation or damage caused by uneven force. In addition, the inner cross-sectional shape of the fixing frame 661 and the upper cross-sectional shape of the carriage 664 are both set to square. This design makes the fit between the fixing frame 661 and the carriage 664 closer and more stable, reducing the shaking or friction caused by shape mismatch. The square cross-sectional shape also provides good structural strength, enabling the fixing frame 661 and the carriage 664 to withstand greater loads and impact forces.

[0030] Reference Figures 1 - 4, the purification mechanism 5 includes a filter box 51. The filter box 51 is fixedly installed on the top of the base frame 1. An activated carbon filter element 52 is slidably connected inside the filter box 51. A sealing plate 53 is fixedly installed on the outer side of the activated carbon filter element 52. One end of the filter box 51 far from the connection with the hose 64 is fixedly installed with an air suction fan 54. The input end of the air suction fan 54 is communicated with the inside of the filter box 51. The filter box 51 is fixedly installed on the top of the base frame 1, providing a closed space for containing and filtering harmful gases. Inside the filter box 51, an activated carbon filter element 52 is slidably connected. This is a highly efficient adsorption material that can adsorb and remove harmful substances in the gas. Through the sliding design, the activated carbon filter element 52 can be conveniently replaced or cleaned to ensure its continuous and efficient filtering and purification performance. A sealing plate 53 is fixedly installed on the outer side of the activated carbon filter element 52. The function of the sealing plate 53 is to ensure the sealing inside the filter box 51, prevent harmful gases from leaking during the filtering process. At the same time, the sealing plate 53 can also fix and protect the filter element, extending its service life. One end of the filter box 51 far from the connection with the hose 64 is fixedly installed with an air suction fan 54. The input end of the air suction fan 54 is communicated with the inside of the filter box 51. When the air suction fan 54 works, the harmful gases generated during the cutting process are sucked into the inside of the filter box 51. After being assisted by the activated carbon filter element 52 for filtering, it can achieve a good adsorption and purification effect, avoiding harm to the human body caused by the fumes.

[0031] Reference Figures 1 - 4 , both ends of the sealing plate 53 are fixedly installed with fixing plates 55. The outer ends of the fixing plates 55 are threadedly connected with installation screws 56. The fixing plates 55 are connected to the filter box 51 through the installation screws 56. The design of the sealing plate 53 plays a key role in the purification mechanism 5. It not only ensures the sealing inside the filter box 51, prevents harmful gases from leaking during the filtering process, but also plays a role in fixing and protecting the activated carbon filter element 52. In order to ensure that the sealing plate 53 can be stably installed on the filter box 51, fixing plates 55 are fixedly installed at both ends of it. The screw installation can be threadedly connected with it. Through this threaded connection method, the fixing plates 55 can be firmly connected to the filter box 51 through the installation screws 56. This design is not only convenient for installation, but also firmly connected and not easy to loosen.

[0032] Principle of use and advantages: By setting up the purification mechanism 5 and the air induction mechanism 6 to cooperate, during the use of this device, the suction fan 54 can be started to operate. The operation of the suction fan 54 generates negative pressure. At this time, the flue gas generated during air cutting can be adsorbed into the interior of the filter box 51 through the hose 64 and the air induction hopper 63. The activated carbon filter element 52 in the filter box 51 assists in purification and adsorption, enabling it to have a good adsorption and purification function. During the adsorption and purification process, since the air induction hopper 63 moves linearly following the laser cutting head 74 and is located on both sides of the laser cutting head 74, the overall adsorption and purification efficiency of this device can be improved. And during this process, the fine impurities in the flue gas can be filtered by the dust-proof net 65, avoiding the influence of large particle impurities in the flue gas on the equipment. During the air suction and purification process, the second motor 663 can be started to operate. The second motor 663 drives the threaded rod 662 to rotate. By the rotation of the threaded rod 662, the carriage 664 can be driven to slide up and down inside the fixed frame 661. At this time, the carriage 664 drives the brush plate to slide inside the air induction hopper 63, and can automatically brush and clean the inside of the dust-proof net 65 during the equipment operation, avoiding the situation that the dust-proof net 65 is covered by large particle impurities in the flue gas and resulting in a decrease in its air induction ability, and improving the overall smoke prevention ability of this device;

[0033] By setting up the drive mechanism 3 and the cutting mechanism 7 to cooperate, during the use of this device, the first motor 35 can be started to operate. The first motor 35 drives the lead screw 33 to rotate. The rotation of the lead screw 33 can drive the sliding block 34 to slide inside the chute 32. By the lateral sliding of the sliding block 34, the laser cutting head 74 can be assisted to move laterally. At this time, by starting the telescopic cylinder 72 to drive the cutting head to move downward, the position of the laser cutting head 74 can be flexibly adjusted, enabling this device to perform linear cutting processing during use, improving the overall cutting processing equipment ability and its adaptability of this device, and facilitating the use of this device.

Claims

1. A smoke prevention mechanism for a laser cutting device, comprising a base frame (1), characterized in that: A top frame (2) is fixedly installed at the top of the base frame (1). A driving mechanism (3) is fixedly installed on the outer side of the top frame (2). A cutting mechanism (7) is fixedly installed on one side of the driving mechanism (3). An air guiding mechanism (6) is fixedly installed on the outer side of the cutting mechanism (7). A purification mechanism (5) is fixedly installed at the top of the base frame (1). The purification mechanism (5) is communicated with the air guiding mechanism (6). Both ends inside the base frame (1) are rotatably connected with conveyor belts (4). The cutting mechanism (7) is arranged between the inner sides of the conveyor belts (4). The cutting mechanism (7) includes side plates (71). The side plates (71) are fixedly installed on one side of the driving mechanism (3). The cutting mechanism (7) includes a telescopic cylinder (72). The telescopic cylinder (72) is fixedly installed at the outer end of the side plate (71). The bottom output end of the telescopic cylinder (72) penetrates through the side plate (71) and is fixedly installed with a fixed seat (73). A laser cutting head (74) is fixedly installed at the bottom of the fixed seat (73).

2. The smoke prevention mechanism of a laser cutting device according to claim 1, characterized in that: The driving mechanism (3) includes a support frame (31). The support frame (31) is arranged in a concave shape. The support frame (31) is fixedly installed in the middle of the outer side of the top frame (2). A chute (32) is opened at the top of the support frame (31). A lead screw (33) is rotatably connected inside the chute (32). A sliding block (34) is threadedly connected to the outer surface of the lead screw (33). The sliding block (34) is slidably connected to the inner side of the chute (32). A first motor (35) is fixedly installed on one side of the upper end of the support frame (31). The output end of the first motor (35) penetrates through the support frame (31) and is fixedly connected to one end of the lead screw (33). The side plate (71) is fixedly installed on one side of the sliding block.

3. The smoke prevention mechanism of a laser cutting device according to claim 2, characterized in that: The air guiding mechanism (6) includes side connection plates (61). The side connection plates (61) are fixedly installed on both sides of the side plate (71). A connection frame (62) is fixedly installed on the outer side of the side connection plate (61). An air guiding hopper (63) is fixedly installed on the outer side of the connection frame (62). A hose (64) is fixedly installed on the outer side of the air guiding hopper (63). The hose (64) is communicated with the purification mechanism (5). A cleaning assembly (66) is fixedly installed between the inner sides of the side plate (71) where the telescopic cylinder (72) and the sliding block (34) are located. A dust-proof partition net (65) is fixedly installed inside the air guiding hopper (63). The overall cross-sectional shape of the air guiding hopper (63) is arranged in an isosceles trapezoid shape.

4. The smoke prevention mechanism of a laser cutting device according to claim 3, characterized in that: The cleaning component (66) includes a fixing frame (661). The fixing frame (661) is fixedly installed at the top of the side plate (71) and is located between the inside of the sliding block (34) and the side connection plate (61). A threaded rod (662) is rotatably connected inside the fixing frame (661). A second motor (663) is fixedly installed at the top of the fixing frame (661). The output end of the second motor (663) is fixedly connected to one end of the threaded rod (662). A sliding frame (664) is threadedly connected to the outer surface of the threaded rod (662). The sliding frame (664) is slidably connected to the inside of the fixing frame (661). Brush plates (665) are fixedly installed at the lower ends of both sides of the sliding frame (664). The outer sides of the brush plates (665) are in fitting connection with the dust-proof net (65) inside the air induction hopper (63).

5. The smoke prevention mechanism of a laser cutting device according to claim 4, characterized in that: The overall cross-sectional shape of the sliding block (34) and the sliding block (34) is cross-shaped. The cross-sectional shape of the inside of the fixing frame (661) and the upper cross-sectional shape of the sliding frame (664) are both set to be square.

6. The smoke prevention mechanism of a laser cutting device according to claim 1, characterized in that: The purification mechanism (5) includes a filter box (51). The filter box (51) is fixedly installed at the top of the base frame (1). An activated carbon filter element (52) is slidably connected inside the filter box (51). A sealing plate (53) is fixedly installed on the outer side of the activated carbon filter element (52). An air suction fan (54) is fixedly installed at one end of the filter box (51) away from the connection with the hose (64). The input end of the air suction fan (54) is communicated with the inside of the filter box (51).

7. The smoke prevention mechanism of a laser cutting device according to claim 6, characterized in that: Fixing plates (55) are fixedly installed at both ends of the sealing plate (53). Mounting screws (56) are threadedly connected to the outer ends of the fixing plates (55). The fixing plates (55) are connected to the filter box (51) through the mounting screws (56).

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