Laser cutting equipment for metal plate machining

Abstract

The invention discloses laser cutting equipment for metal plate machining, and particularly relates to the technical field of laser cutting, the laser cutting equipment comprises a shell, a material conveying structure used for bearing and conveying plates is arranged on one side of the shell, and translation driving equipment is fixedly mounted on the inner surface of the shell; a laser cutter used for cutting plates is fixedly mounted at the upper end of the translation driving equipment, and a plate treatment structure used for pretreating the plates is arranged on the side, close to the material conveying structure, of an inner cavity of the shell. Automatic pretreatment and return secondary cleaning of plates are achieved through cooperation of the plate treatment structure and the material conveying structure, the treatment box of the plate treatment structure is slidably connected with the shell through the pulleys and matched with the elastic connection design, and the treatment box can flexibly move up and down and automatically reset; and the cleaning assembly and the dust collection assembly in the device are linked with the driving assembly and the concave plate, so that plate dust can be cleaned, stubborn particles can be scraped, the laser cutter is protected, the service life of the laser cutter is prolonged, and the cutting precision and the finished product cleanliness are improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a laser cutting device for processing metal sheets. Background Technology

[0002] Laser cutting technology encompasses the use of high-energy-density laser beams to cut and process materials. The core of this technology involves a laser generator producing a laser beam, which is then transmitted and focused via optical lens assemblies. A motion control system drives the cutting head along a predetermined trajectory, while an auxiliary gas system removes molten material to achieve cutting. The overall technology systematically includes laser source types such as fiber lasers and carbon dioxide lasers, beam control components such as reflectors and focusing lenses, a cutting head structure integrating gas nozzles and sensors, and a numerical control unit coordinating laser parameters and motion paths, forming a complete technological system from laser generation and beam processing to cutting execution.

[0003] One type of laser cutting equipment for metal sheet processing refers to a mechanical device specifically designed for cutting metal sheets. This equipment addresses technical issues such as improved cutting accuracy, stable sheet positioning, and control of processing heat-affected zones by employing adjustable focusing lens groups, multi-axis linkage platform drive mechanisms, air-cooled cutting head structures, and real-time monitoring sensors. Specific components include servo motor-driven ball screws, inert gas supply pipelines, photoelectric encoder feedback elements, and an industrial control computer. The cutting operation is completed based on optical focusing principles, mechanical kinematics principles, and closed-loop control principles.

[0004] Existing laser cutting equipment focuses on laser beam generation and motion control, without integrating surface pretreatment functions. Before processing, the sheet metal is covered with dust, grease, and metal particles. During cutting, the high temperature causes contaminants to carbonize or splatter, interfering with the beam focusing accuracy, resulting in slag on the cutting edge and uneven cross-section. At the same time, particles enter the motion guide rail or lead screw, aggravating mechanical wear and affecting positioning accuracy. The accumulation of contaminants may also cause gas nozzle blockage, affecting the slag removal effect. These factors together lead to fluctuations in cutting quality, increased equipment maintenance costs, and intermittent processing, limiting efficiency. Summary of the Invention

[0005] The main objective of this invention is to provide a laser cutting device for processing metal sheets, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A laser cutting device for processing metal sheets includes a housing, an exhaust pipe disposed at the upper end of the housing, a cabinet door disposed on one side of the housing, a material conveying structure for carrying and transporting the sheet metal disposed on one side of the housing, a translation drive device fixedly installed on the inner surface of the housing, a laser cutter for cutting the sheet metal fixedly installed at the upper end of the translation drive device, the translation drive device driving the laser cutter to move horizontally inside the housing, and a sheet metal processing structure for pre-processing the sheet metal disposed on the side of the inner cavity of the housing near the material conveying structure.

[0007] Preferably, the material conveying structure includes a support frame installed on one side of the outer shell, a guide rail is provided at the upper end of the support frame, a platform is slidably connected to the upper end of the support frame and the inner wall of the guide rail, a collision protection frame is fixedly connected to the side of the support frame away from the outer shell, a drive motor for driving the platform to move horizontally is provided on one side of the support frame, and push blocks for coordinating the actions of the plate processing structure are rectangularly distributed at the upper end of the platform.

[0008] Preferably, the board processing structure includes a processing box slidably connected to the inner cavity of the outer shell via pulleys. The upper end of the processing box is elastically connected to the top wall of the inner cavity of the outer shell. In the initial state, the processing box is located in the upper part of the inner cavity of the outer shell. The inner cavity of the processing box is provided with a cleaning component for cleaning dust on the surface of the board. The inner cavity of the processing box is symmetrically provided with a dust suction component for scraping off particles on the surface of the board. The upper end of the processing box is provided with a connecting pipe that communicates with the exhaust pipe and the cleaning component and the two dust suction components. The end of the processing box adjacent to the inner wall of the outer shell is provided with a driving component for driving the cleaning component. The inner wall of the outer shell is symmetrically provided with concave plates for driving the driving components.

[0009] Preferably, the cleaning assembly includes a rectangular box elastically connected to the processing box. The inner wall of the rectangular box is symmetrically rotatably connected with cleaning rollers for cleaning the surface of the board. Both cleaning rollers are elastically connected to the inner wall of the rectangular box by springs. A second cable driven by a drive assembly is wound around the central axis of both cleaning rollers. When the second cable moves, the two cleaning rollers rotate towards the center of the rectangular box.

[0010] Preferably, a dust collection box connected to a connecting pipe is fixedly connected to the top wall of the inner cavity of the rectangular box, and scraper blades for scraping the outer surface of the cleaning roller brush are fixedly connected symmetrically to the lower end of the dust collection box. A suction nozzle connected to the lower end of the dust collection box and connected to its inner cavity and suspended at the junction of the two cleaning roller brushes is fixedly connected to the lower end of the dust collection box.

[0011] Preferably, the drive assembly includes a torsion spring disk rotatably mounted on one side of the rectangular box, a cable wound around the central shaft of the torsion spring disk, a winding shaft rotatably connected to the central shaft of the torsion spring disk, a lower end of the cable extending to the lower end of the rectangular box and having a drive slider located below the path of the concave plate, and the initial elastic force of the torsion spring disk being greater than the initial elastic force of the top of the outer shell on the processing box.

[0012] Preferably, the upper end of the driving slider is fixedly connected to a spherical rod that fits against the lower end of the concave plate. The lower end of the spherical rod extends through the upper end of the driving slider into the inner cavity of the driving slider and is fixedly connected to a U-shaped block that is elastically connected to the inner cavity of the driving slider. The lower end of the driving slider has a slot that matches the push block, and the inner wall of the slot is rotatably connected to an elastic flap via a torsion spring. When the spherical rod is at the high point of the path of the concave plate, the U-shaped block separates from the elastic flap. When the spherical rod is at the low point of the path of the concave plate, the U-shaped block is engaged with both sides of the elastic flap.

[0013] Preferably, the vacuuming assembly includes a fixed box fixedly connected to one side of the rectangular box. Several obliquely distributed scrapers are fixedly connected in an array at the lower end of the fixed box. The portion of the inner cavity of the rectangular box located above the scrapers is rotatably connected to a one-way flap. When the rectangular box is at its lowest point, the bottom end of the scrapers contacts the upper end of the plate.

[0014] Preferably, the top wall of the inner cavity of the fixed box is fixedly connected to a flow guide box that communicates with the connecting pipe. The lower end of the flow guide box is provided with a conical flow collecting groove for guiding the airflow direction. The top wall of the inner cavity of the flow guide box is provided with an arc-shaped flow guide groove for guiding dust diversion. The junction of the arc-shaped flow guide groove and the conical flow collecting groove is rotatably connected by a torsion spring to a one-way flap for preventing dust backflow. The upper side of the inner cavity of the flow guide box is provided with a mounting bracket for supporting the arc-shaped flow guide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves automated pre-processing and secondary cleaning of sheet metal through the coordination of a sheet metal processing structure and a material conveying structure. The processing box of the sheet metal processing structure is slidably connected to the outer shell via pulleys and features an elastic connection design, allowing for flexible up-and-down movement and automatic resetting. Its internal cleaning components, dust collection components, drive components, and concave plates work in tandem to precisely clean dust from the sheet metal and scrape away stubborn particles. The cleaning roller brush of the cleaning component is elastically adaptable to sheet metal of different thicknesses, while the dust collection component efficiently removes dust through a guide box, connecting pipe, and exhaust pipe. This, combined with the pusher block of the platform, enables collaborative operation, protecting the laser cutter, extending its service life, improving cutting accuracy and finished product cleanliness, and achieving integrated processing that improves efficiency and reduces steps.

[0016] 2. This invention achieves precise and efficient cleaning of material surfaces through the cooperation of the cleaning component and the drive component. The rectangular box and the treatment box of the cleaning component are elastically connected. Combined with the springs on the inner wall of the rectangular box and the cleaning roller brush, it can adapt to materials of different thicknesses. Cable 2 drives the cleaning roller brush to rotate towards the center, generating concentrated cleaning force. The dust collection box, together with scraper 2, avoids secondary dust pollution, and the suction nozzle improves dust collection efficiency. The torsion spring disc of the drive component ensures a reasonable sequence of actions, the ball joint of the drive slider reduces friction, the U-shaped block and the elastic flap ensure reliable power transmission, and the torsion spring disc enables automatic component reset, improving cleaning stability and adaptability.

[0017] 3. This invention achieves efficient removal of stubborn particles from sheet metal and orderly dust discharge through the cooperation of the fixed box and the guide box of the dust collection component. The inclined array of scrapers at the lower end of the fixed box enhances scraping force and ensures no particles are missed, while the one-way flap prevents particle backflow, guaranteeing the pre-treatment effect. The conical collecting groove of the guide box gathers airflow to increase dust collection power, the arc-shaped guide groove prevents dust accumulation, and the one-way flap blocks backflow of dust, significantly improving dust collection efficiency. The mounting bracket provides stable support for the arc-shaped guide groove, ensuring stable structural operation, adapting to the pre-treatment needs of sheet metal, and helping to improve the quality of subsequent cutting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the outer casing of the present invention; Figure 3 This is a schematic diagram of the material conveying structure of the present invention; Figure 4 This is a schematic diagram of the sheet metal processing structure of the present invention; Figure 5 This is a cross-sectional structural diagram of the sheet metal processing structure of the present invention; Figure 6 This is a schematic diagram of the cleaning assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the driving component of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of a local structure at point A; Figure 9 This is a schematic diagram of the structure of the dust collection component of the present invention.

[0019] In the diagram: 1. Outer shell; 11. Laser cutter; 12. Translation drive device; 2. Material conveying structure; 21. Support frame; 22. Platform; 23. Guide rail; 24. Anti-collision frame; 25. Drive motor; 26. Push block; 3. Exhaust duct; 4. Cabinet door; 5. Sheet metal processing structure; 51. Processing box; 52. Drive assembly; 521. Torsion spring disc; 522. Winding shaft; 523. Cable one; 524. Drive slider; 5241. Ball rod; 5242 5243. U-shaped block; 53. Elastic flap; 54. Concave plate; 55. Dust collection assembly; 541. Fixing box; 542. Flow guide box; 543. One-way flap one; 544. Conical flow collection channel; 545. Arc-shaped flow guide channel; 546. One-way flap two; 547. Scraper one; 55. Sweeping assembly; 551. Rectangular box; 552. Dust collection box; 553. Scraper two; 554. Dust suction nozzle; 555. Sweeping roller brush; 556. Cable two; 56. Connecting pipe. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] Example: A laser cutting device for processing metal sheets, see reference. Figure 1 and Figure 2 The system includes an outer shell 1, which serves as an overall protective structure and a mounting carrier for components. It prevents debris from splashing and dust from spreading during the cutting process, protecting the safety of operators and maintaining a stable internal environment. An exhaust pipe 3 located at the top of the outer shell 1 is used to remove dust and debris generated during equipment operation, ensuring smooth internal airflow. A cabinet door 4 located on one side of the outer shell 1 facilitates inspection, maintenance, and cleaning of the equipment's interior by operators. A material conveying structure 2 is located on one side of the outer shell 1 to carry and transport sheet metal, enabling automated feeding and unloading of sheet metal, reducing manual intervention and improving processing efficiency. A translation drive device 12 is fixedly installed on the inner surface of the outer shell 1. A laser cutter 11 for cutting sheet metal is fixedly installed at the top of the translation drive device 12. The translation drive device 12 drives the laser cutter 11 to move horizontally inside the outer shell 1, enabling precise cutting of different positions on the sheet metal, improving cutting flexibility and accuracy. A sheet metal processing structure 5 is located on the side of the inner cavity of the outer shell 1 near the material conveying structure 2, which can remove dust and particles from the surface of the sheet metal in advance, preventing them from affecting the cutting quality and the service life of the laser cutter 11.

[0022] For further details, please refer to [link / reference]. Figure 2 and Figure 3The material conveying structure 2 includes a support frame 21 installed on one side of the outer shell 1. The support frame 21 provides stable support for the entire conveying structure, ensuring structural stability and preventing shaking during operation. A guide rail 23 is provided at the upper end of the support frame 21, which provides precise guidance for the movement of the platform 22, preventing the platform 22 from shifting and causing misalignment of the conveyed materials. The platform 22 is slidably connected to the upper end of the support frame 21 and the inner wall of the guide rail 23. The platform 22 is used to carry the materials to be processed and the processed materials. Its sliding cooperation with the guide rail 23 makes the material conveying more stable and smooth. A collision protection frame 2 is fixedly connected to the side of the support frame 21 away from the outer shell 1. 4. It can effectively prevent the platform 22 from moving excessively, avoid violent collisions with the outer shell 1, protect the platform 22 and the outer shell 1 and other equipment components from damage, and extend the service life of the equipment. A drive motor 25 is provided on one side of the support frame 21 to drive the platform 22 to move horizontally. The drive motor 25 provides stable power to the platform 22 to realize the automated reciprocating movement of the platform 22. Push blocks 26 are arranged in a rectangular distribution on the upper end of the platform 22 to coordinate the action of the plate processing structure 5. The rectangular distribution design can ensure precise cooperation with the drive component 52, ensure that the action of the plate processing structure 5 is coordinated and consistent, and improve the pre-processing effect.

[0023] For further details, please refer to [link / reference]. Figure 4 and Figure 5 The board processing structure 5 includes a processing box 51 slidably connected to the inner cavity of the outer shell 1 via pulleys. The pulley connection makes the up-and-down movement of the processing box 51 smoother and reduces frictional wear. The upper end of the processing box 51 is elastically connected to the top wall of the inner cavity of the outer shell 1. In the initial state, the processing box 51 is located in the upper part of the inner cavity of the outer shell 1. The elastic connection design facilitates the automatic reset of the processing box 51 after completing the operation, preparing it for the next processing action. The inner cavity of the processing box 51 is equipped with a cleaning component 55 for cleaning dust on the surface of the board, which can efficiently remove floating dust from the surface of the board. The inner cavity of the processing box 51 is symmetrically equipped with a dust suction component 54 for scraping off particulate matter on the surface of the board, which can target... The treatment box 51 is equipped with a connecting pipe 56 at the top, which is connected to the exhaust pipe 3 and the cleaning component 55 and the two dust suction components 54. The dust particles that are swept and scraped can be quickly guided into the exhaust pipe 3 for discharge. The end of the treatment box 51 adjacent to the inner wall of the outer shell 1 is equipped with a drive component 52 for driving the cleaning component 55, which provides power support for the cleaning component 55. The inner wall of the outer shell 1 is symmetrically equipped with concave plates 53 for driving the drive component 52. By cooperating with the drive component 52, the timing of the action of the cleaning component 55 is controlled, so as to achieve coordinated linkage with the movement of the platform 22.

[0024] In the operation of this embodiment, the automatic pre-processing and return secondary cleaning of the sheet metal are achieved through the cooperation of the sheet metal processing structure 5 and the material conveying structure 2. The processing box 51 of the sheet metal processing structure 5 is slidably connected to the outer shell 1 through pulleys and with a flexible connection design, which can move up and down flexibly and automatically reset. Its internal cleaning component 55, dust suction component 54, drive component 52, and concave plate 53 are linked to accurately clean the dust on the sheet metal and scrape off stubborn particles. The cleaning roller brush 555 of the cleaning component 55 is flexible to adapt to sheet metal of different thicknesses. The dust suction component 54 is connected to the connecting pipe 56 and the exhaust pipe 3 through the guide box 542 to efficiently remove dust. It works in conjunction with the push block 26 of the platform 22 to achieve collaborative operation, which not only protects the laser cutter 11 and extends its service life, but also improves the cutting accuracy and the cleanliness of the finished product, realizing integrated processing to improve efficiency and reduce steps.

[0025] Example 2: Building upon Example 1, this example achieves precise and efficient cleaning of the board surface through the cooperation of the cleaning component 55 and the drive component 52. The rectangular box 551 of the cleaning component 55 is elastically connected to the processing box 51. Combined with the cleaning roller brush 555 and the springs on the inner wall of the rectangular box 551, it can adapt to boards of different thicknesses. Cable 2 556 drives the cleaning roller brush 555 to rotate towards the center, forming a concentrated cleaning force. The dust collection box 552, in conjunction with scraper 2 553, prevents secondary dust pollution, and the suction nozzle 554 improves dust collection efficiency. The torsion spring disc 521 of the drive component 52 ensures a reasonable sequence of actions, the ball rod 5241 of the drive slider 524 reduces friction, the U-shaped block 5242 and the elastic flap 5243 ensure reliable power transmission, and the torsion spring disc 521 enables automatic component reset, improving cleaning stability and adaptability. For further details, please refer to [link / reference]. Figure 6 The cleaning assembly 55 includes a rectangular box 551 elastically connected to the processing box 51. The elastic connection allows the rectangular box 551 to slightly adjust its position according to the thickness of the board, improving adaptability. The inner wall of the rectangular box 551 is symmetrically rotatably connected to cleaning roller brushes 555 for cleaning the surface of the board. By rotating, the surface of the board is thoroughly cleaned. Both cleaning roller brushes 555 are elastically connected to the inner wall of the rectangular box 551 by springs, which can adapt to boards of different thicknesses, closely fit the surface of the board to improve the cleaning effect, and avoid incomplete cleaning due to uneven board thickness. The central axis of both cleaning roller brushes 555 is wound with a second cable 556 driven by the drive assembly 52. ​​When the second cable 556 moves, the two cleaning roller brushes 555 rotate towards the center of the rectangular box 551, which can form a concentrated cleaning force on the surface of the board and enhance the cleaning effect.

[0026] For further details, please refer to [link / reference]. Figure 6A dust collection box 552, which is connected to the connecting pipe 56, is fixedly connected to the top wall of the inner cavity of the rectangular box 551. The dust collection box 552 is used to temporarily collect the dust generated during cleaning, so as to prevent the dust from accumulating in the rectangular box 551. The lower end of the dust collection box 552 is symmetrically connected to scraper blades 553 for scraping the outer surface of the cleaning roller brush 555. These scraper blades can remove the dust attached to the outer surface of the cleaning roller brush 555 in time, so as to prevent the dust from falling back onto the surface of the board and causing secondary pollution, and to ensure that the cleaning roller brush 555 works continuously and efficiently. The lower end of the dust collection box 552 is fixedly connected to a suction nozzle 554 that is connected to its inner cavity and suspended at the junction of the two cleaning roller brushes 555. This nozzle can accurately absorb the dust generated by the two cleaning roller brushes 555, improve the dust collection efficiency, and reduce dust residue.

[0027] For further details, please refer to [link / reference]. Figure 7 The drive assembly 52 includes a torsion spring disc 521 rotatably mounted on one side of the rectangular box 551. The torsion spring disc 521 has a reset function, which can drive the relevant components back to their initial position after the operation is completed. A cable 523 is wound around the central shaft of the torsion spring disc 521, and the cable 523 plays a role in power transmission. The central shaft of the torsion spring disc 521 is driven by a winding shaft 522 that is rotatably connected to the rectangular box 551. The winding shaft 522 can tighten or loosen the cable 556 by rotation, thereby controlling the cleaning. The rotation of the roller brush 555 causes the lower end of the cable 523 to extend to the lower end of the rectangular box 551 and a drive slider 524 located below the path of the concave plate 53. The drive slider 524 is used to cooperate with the push block 26 and the concave plate 53 to trigger the action of the drive assembly 52. ​​The initial elastic force of the torsion spring disc 521 is greater than the initial elastic force of the top of the outer shell 1 on the treatment box 51, ensuring that when the push block 26 pulls the cable 523, it can first drive the treatment box 51 to move down, and then drive the cleaning roller brush 555 to rotate, ensuring a reasonable action sequence.

[0028] For further details, please refer to [link / reference]. Figure 8 The upper end of the drive slider 524 is fixedly connected to a spherical rod 5241 that fits against the lower end of the concave plate 53. The spherical rod 5241 reduces friction with the concave plate 53, making the sliding smoother. The lower end of the spherical rod 5241 extends through the upper end of the drive slider 524 into the inner cavity of the drive slider 524 and is fixedly connected to a U-shaped block 5242 that is elastically connected to the inner cavity of the drive slider 524. The elastic connection facilitates the flexible extension and retraction of the U-shaped block 5242. The lower end of the drive slider 524 has a slot that matches the push block 26. The inner wall of the slot is rotatably connected to an elastic flap 5243 via a torsion spring. The torsion spring can automatically reset the elastic flap 5243. When the ball rod 5241 is at the high point of the path of the concave plate 53, the U-shaped block 5242 separates from the elastic flap 5243. At this time, the push block 26 can be smoothly inserted into or removed from the slot. When the ball rod 5241 is at the low point of the path of the concave plate 53, the U-shaped block 5242 is engaged on both sides of the elastic flap 5243, so that the push block 26 is stably connected to the drive slider 524, ensuring reliable power transmission.

[0029] Example 3: Building upon Example 2, this example utilizes the cooperation of the fixing box 541 and the flow guide box 542 of the dust collection component 54 to achieve efficient removal of stubborn particles from the board and orderly discharge of dust. The inclined array of scrapers 547 at the lower end of the fixing box 541 enhances scraping force and ensures no particles are missed, while the one-way flap 546 prevents backflow of particles, guaranteeing the pre-treatment effect. The conical collecting groove 544 of the flow guide box 542 gathers airflow to increase suction power, while the arc-shaped flow guide groove 545 prevents dust accumulation. The one-way flap 543 blocks backflow of dust, significantly improving suction efficiency. The mounting bracket provides stable support for the arc-shaped flow guide groove 545, ensuring stable structural operation, adapting to the pre-treatment needs of the board, and helping to improve the subsequent cutting quality.

[0030] For further details, please refer to [link / reference]. Figure 9 The vacuuming assembly 54 includes a fixed box 541 fixedly connected to one side of the rectangular box 551. The fixed box 541 provides a mounting carrier for other components of the vacuuming assembly 54. Several obliquely distributed scrapers 547 are fixedly connected in an array at the lower end of the fixed box 541. The oblique design can enhance the scraping force on stubborn particles on the surface of the board. The array distribution can achieve comprehensive scraping and avoid omissions. The part of the inner cavity of the rectangular box 551 located above the scrapers 547 is rotatably connected to a one-way flap 546. The one-way flap 546 can prevent the scraped particles from flowing back to the surface of the board and ensure the pre-treatment effect. When the rectangular box 551 is at its lowest point, the bottom of the scrapers 547 contacts the top of the board to ensure that the scraping action is effectively implemented.

[0031] For further details, please refer to [link / reference]. Figure 9 A guide box 542, which communicates with the connecting pipe 56, is fixedly connected to the top wall of the inner cavity of the fixed box 541. The guide box 542 is used to guide the dust airflow towards the connecting pipe 56. The guide box 542 has a conical collecting groove 544 at its lower end to guide the airflow direction. The conical structure can gather the airflow and improve the suction power. An arc-shaped groove is provided on the top wall of the inner cavity of the guide box 542 to guide the dust diversion. The arc-shaped guide channel 545 can prevent dust accumulation and allow dust to enter the connecting pipe 56 smoothly. At the junction of the arc-shaped guide channel 545 and the conical collecting channel 544, a one-way flap 543 is rotatably connected by a torsion spring to prevent dust backflow. This can effectively block dust from flowing back from the connecting pipe 56 and improve dust collection efficiency. The upper side of the inner cavity of the guide box 542 is provided with a mounting bracket to support the arc-shaped guide channel 545. The mounting bracket provides a stable support for the arc-shaped guide channel 545 and ensures its structural stability.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for processing metal sheets, comprising a housing (1), an exhaust pipe (3) disposed at the upper end of the housing (1), and a cabinet door (4) disposed on one side of the housing (1), characterized in that: A material conveying structure (2) for carrying and transporting the sheet metal is provided on one side of the outer shell (1). A translation drive device (12) is fixedly installed on the inner surface of the outer shell (1). A laser cutter (11) for cutting the sheet metal is fixedly installed on the upper end of the translation drive device (12). The translation drive device (12) drives the laser cutter (11) to move horizontally inside the outer shell (1). A sheet metal processing structure (5) for pre-processing the sheet metal is provided on the side of the inner cavity of the outer shell (1) close to the material conveying structure (2).

2. The laser cutting equipment for processing metal sheets according to claim 1, characterized in that: The material conveying structure (2) includes a support frame (21) installed on one side of the outer shell (1). A guide rail (23) is provided on the upper end of the support frame (21). A platform (22) is slidably connected to the upper end of the support frame (21) and the inner wall of the guide rail (23). A collision protection frame (24) is fixedly connected to the side of the support frame (21) away from the outer shell (1). A drive motor (25) for driving the platform (22) to move horizontally is provided on one side of the support frame (21). Push blocks (26) for coordinating the action of the plate processing structure (5) are rectangularly distributed on the upper end of the platform (22).

3. The laser cutting equipment for metal sheet processing according to claim 2, characterized in that: The board processing structure (5) includes a processing box (51) that is slidably connected to the inner cavity of the outer shell (1) via pulleys. The upper end of the processing box (51) is elastically connected to the top wall of the inner cavity of the outer shell (1). In the initial state, the processing box (51) is located in the upper part of the inner cavity of the outer shell (1). The inner cavity of the processing box (51) is provided with a cleaning component (55) for cleaning dust on the surface of the board. The inner cavity of the processing box (51) is symmetrically provided with a dust suction component (54) for scraping off particles on the surface of the board. The upper end of the processing box (51) is provided with a connecting pipe (56) that is connected to the exhaust pipe (3) and to the cleaning component (55) and the two dust suction components (54). The processing box (51) is provided with a driving component (52) for driving the cleaning component (55) at one end adjacent to the inner wall of the outer shell (1). The inner wall of the outer shell (1) is symmetrically provided with a concave plate (53) for driving the driving component (52).

4. The laser cutting equipment for processing metal sheets according to claim 3, characterized in that: The cleaning assembly (55) includes a rectangular box (551) elastically connected to the processing box (51). The inner wall of the rectangular box (551) is symmetrically rotatably connected to cleaning roller brushes (555) for cleaning the surface of the board. Both cleaning roller brushes (555) are elastically connected to the inner wall of the rectangular box (551) by springs. Both cleaning roller brushes (555) have a cable second (556) driven by the drive assembly (52) wound around their central axis. When the cable second (556) moves, the two cleaning roller brushes (555) rotate toward the center of the rectangular box (551).

5. The laser cutting equipment for processing metal sheets according to claim 4, characterized in that: The rectangular box (551) has a dust collection box (552) that is connected to the top wall of the inner cavity and is connected to the connecting pipe (56). The dust collection box (552) has scraper blades (553) for scraping the outer surface of the cleaning roller brush (555) that are symmetrically connected to the lower end of the dust collection box (552). The dust collection box (552) has a suction nozzle (554) that is connected to its inner cavity and is suspended at the junction of the two cleaning roller brushes (555).

6. The laser cutting equipment for processing metal sheets according to claim 4, characterized in that: The drive assembly (52) includes a torsion spring disc (521) rotatably mounted on one side of the rectangular box (551). A cable (523) is wound around the central shaft of the torsion spring disc (521). The central shaft of the torsion spring disc (521) is driven to a winding shaft (522) rotatably connected to the rectangular box (551). The lower end of the cable (523) extends to the lower end of the rectangular box (551) and is provided with a drive slider (524) located below the path of the concave plate (53). The initial elastic force of the torsion spring disc (521) is greater than the initial elastic force of the top of the outer shell (1) on the processing box (51).

7. The laser cutting equipment for processing metal sheets according to claim 6, characterized in that: The upper end of the drive slider (524) is fixedly connected to a spherical rod (5241) that fits against the lower end of the concave plate (53). The lower end of the spherical rod (5241) extends through the upper end of the drive slider (524) to the inner cavity of the drive slider (524) and is fixedly connected to a U-shaped block (5242) that is elastically connected to the inner cavity of the drive slider (524). The lower end of the drive slider (524) has a slot that matches the push block (26), and the inner wall of the slot is rotatably connected to an elastic flap (5243) by a torsion spring. When the spherical rod (5241) is at the high point of the path of the concave plate (53), the U-shaped block (5242) separates from the elastic flap (5243). When the spherical rod (5241) is at the low point of the path of the concave plate (53), the U-shaped block (5242) is engaged on both sides of the elastic flap (5243).

8. The laser cutting equipment for processing metal sheets according to claim 3, characterized in that: The dust collection assembly (54) includes a fixed box (541) fixedly connected to one side of a rectangular box (551). Several obliquely distributed scraper blades (547) are fixedly connected in an array at the lower end of the fixed box (541). The part of the inner cavity of the rectangular box (551) located above the scraper blades (547) is rotatably connected to a one-way flap (546). When the rectangular box (551) is at its lowest point, the bottom end of the scraper blades (547) contacts the upper end of the plate.

9. The laser cutting equipment for processing metal sheets according to claim 8, characterized in that: The top wall of the inner cavity of the fixed box (541) is fixedly connected to a flow guide box (542) that communicates with the connecting pipe (56). The lower end of the flow guide box (542) is provided with a conical flow collecting groove (544) for guiding the airflow direction. The top wall of the inner cavity of the flow guide box (542) is provided with an arc-shaped flow guide groove (545) for guiding the dust diversion. The arc-shaped flow guide groove (545) and the conical flow collecting groove (544) are connected by a torsion spring to a one-way flap (543) for preventing dust backflow. The upper side of the inner cavity of the flow guide box (542) is provided with a mounting bracket for supporting the arc-shaped flow guide groove (545).

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