Laser cutting bed with flue gas treatment function

Abstract

The laser cutting bed with the flue gas treatment function comprises a machine tool body which is of a rectangular structure, and a rectangular groove is formed in the middle of the upper end of the machine tool body; the workbench is installed in the rectangular groove and used for bearing a to-be-cut material. The numerical control unit is mounted at the upper end of the machine tool body; the cutting unit is installed on the numerical control unit, the numerical control unit is used for driving the cutting unit to move in the horizontal direction, and the cutting unit is used for cutting a to-be-cut material and collecting smoke generated by cutting; through linkage of the rotating mechanism and the cleaning mechanism, automatic disassembly, high-pressure back flushing and impurity recovery of the filter plate are achieved, filter screen regeneration can be completed without shutdown, the filter assembly keeps high permeability for a long time, and the problem of efficiency attenuation caused by frequent blockage of a traditional filter screen is solved.

Description

Technical Field

[0001] This application relates to the technical field of laser cutting machine tools, and particularly to a laser cutting table with a flue gas treatment function. Background Art

[0002] Due to the advantages of high precision, high efficiency, and non-contact processing, laser cutting technology is widely used in the precision machining fields of materials such as metals and plastics. However, during the laser cutting process, the high temperature causes the material to vaporize or burn, generating a large amount of soot containing harmful particulate matters (such as metal dust and volatile organic compounds). If these soot are directly dispersed into the workshop environment without effective treatment, they will not only pollute the air and endanger the health of operators, but also adhere to the inside of the equipment, affecting the service life of precision components such as laser cutting heads, and even causing equipment failures.

[0003] For the Chinese patent with the publication number CN 215091347 U and the name of "a laser cutting device with flue gas treatment", through the provided flue gas cooling block, adsorption orifice plate group, flue gas treatment box and exhaust fan, the vaporized flue gas can be first inhaled into the flue gas treatment box for cooling and then adsorbed, which can improve the adsorption effect, reduce the situation of vaporized flue gas overflowing, improve the health of workers, and is beneficial to people's use. The whole laser cutting device with flue gas treatment has a simple structure and convenient operation.

[0004] In the prior art of the above patent, when sucking the sheet material, there are usually the following defects: when the prior art treats the flue gas generated by laser cutting, the cleaning device is only arranged on one side of the laser cutting head, resulting in poor adsorption treatment effect on the other side and easy occurrence of flue gas overflow; secondly, a large amount of particulate debris and ultrafine dust are mixed in the flue gas. The traditional fixed filter screen needs to be cleaned or replaced frequently by shutting down the machine, and cannot automatically clean the filter screen, affecting the filtration and purification efficiency of the flue gas. Based on this, there is still room for improvement on the basis of the existing laser cutting table with flue gas treatment function. Summary of the Invention

[0005] In order to accurately realize the functions of filtering and purifying the flue gas generated during the cutting of the laser cutting table, this application provides a laser cutting table with a flue gas treatment function.

[0006] The laser cutting table with a flue gas treatment function provided by this application adopts the following technical solutions:

[0007] A laser cutting cutting bed with a flue gas treatment function includes a machine tool main body, which is in a rectangular structure, and a rectangular groove is provided in the middle of the upper end of the machine tool main body; a workbench, which is installed inside the rectangular groove and is used to support the material to be cut; a numerical control unit, which is installed on the upper end of the machine tool main body; a cutting unit, which is installed on the numerical control unit, and the numerical control unit is used to drive the displacement of the cutting unit in the horizontal direction, and the cutting unit is used to cut the material to be cut and collect and process the dust generated by the cutting.

[0008] The cutting unit includes a moving frame, a dust collection frame, a flue gas filtering component, a flue gas purification component, a lifting component and a laser cutting head. A moving frame is installed in the middle of the front end of the numerical control unit. The moving frame is in an L-shaped structure. A rectangular through groove is provided inside the moving frame, and a circular through hole is provided at the lower end of the moving frame. A dust collection frame is installed at the lower end of the moving frame. A flue gas filtering component is installed at the lower end inside the rectangular through groove, a flue gas purification component is installed in the middle inside the rectangular through groove, a lifting component is installed at the upper end inside the rectangular through groove, and a laser cutting head is installed in the middle of the lifting component. The laser cutting head sequentially passes through the middle of the flue gas filtering component and the flue gas purification component and reaches the lower end of the moving frame.

[0009] Further, the dust collection frame is in a rectangular structure, a conical through hole is provided inside the dust collection frame, the conical through hole is communicated with the circular through hole, and a collection pad is further installed in the middle of the upper end of the dust collection frame. The collection pad is in an annular rubber structure and extends into the circular through hole.

[0010] Further, the flue gas filtering component includes an annular slide rail, a filtering frame, a filter plate, a rotating mechanism and a cleaning mechanism. Annular slide rails are symmetrically arranged inside the rectangular through groove. The annular slide rail at the lower end inside the rectangular through groove is installed on the moving frame, and the annular slide rail at the upper end inside the rectangular through groove is installed at the lower end of the flue gas purification component. A filtering frame is installed between the two annular slide rails. The filtering frame is in a circular ring structure. Filtering grooves are evenly provided on the outer side of the filtering frame, and air holes communicating with the inside of the filtering grooves are evenly provided on the inner side surface of the filtering frame. A filter plate is installed at the outer end of the filtering groove. A rotating mechanism is installed at the lower end inside the moving frame, and a cleaning mechanism is installed on the inner wall of the moving frame. The gap between the outer side of the filtering frame and the inner wall of the moving frame is an adsorption space.

[0011] Further, the filter plate is in a rectangular structure, the middle part of the filter plate is a hollow structure, a filter cloth bag is installed in the middle of the filter plate, the filter cloth bag is arranged in a wavy shape, insertion rods are evenly installed on both sides of the filter plate, and the filter plate is fixedly connected to the filtering groove through the insertion rods. Unlocking holes are evenly provided on the outer side surface of the filter plate.

[0012] Further, the rotating mechanism includes a rotating gear and an annular gear. The rotating gear is installed in the adsorption space through a bearing, the rotating gear is connected to the output shaft of the motor, an annular gear is installed on the outer side of the lower end of the filtering frame, and the annular gear meshes with the rotating gear.

[0013] Furthermore, the cleaning mechanism includes a cleaning frame, a telescopic cylinder, a disassembly plate, a flipping plate and a collection rack. The cleaning frame is installed inside the moving frame. An installation groove is formed in the middle of the cleaning frame. The inner side surface of the cleaning frame is in close contact with the outer side surface of the filter rack. A telescopic cylinder is installed in the installation groove. The end of the telescopic cylinder is installed with a disassembly plate, and the disassembly plate cooperates with the filter plate. The flipping plate is installed on the side wall of the installation groove through a pin shaft. The cross section of the flipping plate is in an L-shaped structure. Collection areas are formed on both sides of the cleaning frame. A flexible rubber is installed between the inner end of the flipping plate and the collection area. The flipping plate is in a louver structure, and a collection rack is installed in the collection area.

[0014] Furthermore, disassembly rods are uniformly arranged on the inner side surface of the disassembly plate. The end of the disassembly rod is provided with a cam disc, and the disassembly rod is rotatably arranged.

[0015] Furthermore, the flue gas purification component includes a fixed frame, a negative pressure fan and a purification filter screen. The fixed frame is installed in the middle of the rectangular through groove. The fixed frame is in a ring-shaped hollow structure. An annular groove is provided in the middle of the fixed frame. Connecting holes communicating with the adsorption space are uniformly arranged at the lower end of the annular groove. A negative pressure fan is installed in the middle of the annular groove. A purification filter screen is installed at the upper end inside the annular groove. The negative pressure fan is used to drive the filtered gas inside the adsorption space to be discharged upward through the purification filter screen.

[0016] Furthermore, a flexible gasket is installed between the middle of the fixed frame and the laser cutting head.

[0017] Furthermore, the lifting component includes a lifting frame, a connecting frame and a connecting rod. The lifting frame is installed at the upper end inside the rectangular through groove. The lifting frame can move up and down along the length direction of the rectangular through groove. A connecting frame is arranged in the middle of the lifting frame. Connecting rods are uniformly installed between the connecting frame and the lifting frame. The upper end of the laser cutting head is fixedly installed inside the connecting frame.

[0018] Beneficial effects

[0019] Compared with the prior art, the present invention provides a laser cutting and trimming machine with a flue gas treatment function, having the following beneficial effects:

[0020] 1. In this invention, through the synergistic effect of the negative pressure fan and the conical through hole of the dust collection rack, a directional negative pressure adsorption area is formed near the cutting point, realizing the instant capture and rapid diversion of dust, and the dynamic sealing of the flexible gasket for the laser cutting head and the flue gas purification component, effectively preventing dust from escaping and improving the air quality in the workshop.

[0021] 2. In this invention, the flue gas filtration component adopts a filtration method of a rotary filter rack and a corrugated filter bag, which can accurately intercept particulate matter. Through the linkage of the rotation mechanism and the cleaning mechanism, the automatic disassembly, high-pressure backwashing, and impurity recovery of the filter plate are realized, and the regeneration of the filter screen can be completed without stopping the machine. The filtration component maintains a high permeability for a long time, avoiding the problem of efficiency attenuation caused by frequent blockage of traditional filter screens.

[0022] 3. In this invention, through the full-process closed-loop design of "cutting - adsorption - filtration - purification - self-cleaning", it solves the defects such as lagging soot treatment, inefficient filter screen maintenance, and residual harmful gases in traditional laser cutting. While improving the processing accuracy, it realizes environmental protection in production, intelligent operation and maintenance, and cost intensification, and is applicable to high-standard precision manufacturing scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the drawings and embodiments.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present application.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the cutting unit of the present application.

[0026] Figure 3 It is a sectional structural schematic diagram of the cutting unit of the present application.

[0027] Figure 4 It is a first sectional structural schematic diagram of the cutting unit of the present application.

[0028] Figure 5 It is a second sectional structural schematic diagram of the cutting unit of the present application.

[0029] Figure 6 It is a sectional structural schematic diagram between the dust collection rack, the flue gas filtration component and the flue gas purification component of the present application.

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the flue gas filtration component of the present application.

[0031] Figure 8 It is a sectional structural schematic diagram of the flue gas filtration component of the present application.

[0032] Figure 9 It is a sectional structural schematic diagram of the filter plate of the present application.

[0033] Figure 10 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present application.

[0034] Figure 11 It is a sectional structural schematic diagram of the cleaning mechanism of the present application.

[0035] Description of reference numerals: 1. Machine tool main body; 2. Workbench; 3. Numerical control unit; 31. Transverse electric slide rail; 32. Mounting seat; 33. Crossbeam frame; 34. Longitudinal electric slide rail; 4. Cutting unit; 41. Moving frame; 42. Dust collection frame; 421. Collection pad; 43. Flue gas filtration assembly; 431. Annular slide rail; 432. Filtration frame; 433. Filter plate; 434. Rotating mechanism; 4341. Rotating gear; 4342. Annular gear; 435. Cleaning mechanism; 4351. Cleaning frame; 4352. Telescopic cylinder; 4353. Demountable plate; 4354. Flipping plate; 4355. Collection rack; 44. Flue gas purification assembly; 441. Fixed frame; 442. Negative pressure fan; 443. Purification filter screen; 45. Lifting assembly; 451. Lifting frame; 452. Connecting frame; 453. Connecting rod; 46. Laser cutting head; 461. Flexible gasket. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figures 1-11 A laser cutting and trimming machine with a flue gas treatment function provided in an embodiment of the present invention includes a machine tool main body 1 having a rectangular structure, and a rectangular groove is provided in the middle of the upper end of the machine tool main body 1; a workbench 2 installed inside the rectangular groove for supporting the material to be cut; a numerical control unit 3 installed on the upper end of the machine tool main body 1; and a cutting unit 4 installed on the numerical control unit 3. The numerical control unit 3 is used to drive the cutting unit 4 to displace in the horizontal direction, and the cutting unit 4 is used to cut the material to be cut and collect and process the dust generated during cutting.

[0038] The numerical control unit 3 includes a transverse electric slide rail 31, a mounting seat 32, a crossbeam frame 33 and a longitudinal electric slide rail 34. The transverse electric slide rails 31 are symmetrically installed on the upper end of the machine tool main body 1, the mounting seat 32 is installed on the upper end of the transverse electric slide rail 31, the crossbeam frame 33 is fixedly installed between the upper ends of the two mounting seats 32, the longitudinal electric slide rail 34 is installed at the front end of the crossbeam frame 33, and the cutting unit 4 is installed on the crossbeam frame 33. The inner side of the cutting unit 4 is connected to the longitudinal electric slide rail 34.

[0039] In the above technical solution, the cutting unit 4 can be driven to move arbitrarily in the horizontal plane by the transverse electric slide rail 31 and the longitudinal electric slide rail 34. The cutting unit 4 realizes the function of accurately cutting the material to be cut by means of laser cutting. At the same time, the cutting unit 4 can collect and process the flue gas generated during cutting to avoid the influence of flue gas overflow on the workshop air environment.

[0040] Refer to Figures 2-5As shown in the figure, the cutting unit 4 includes a moving frame 41, a dust collection frame 42, a flue gas filtering component 43, a flue gas purification component 44, a lifting component 45 and a laser cutting head 46. In the middle of the front end of the numerical control unit 3, a moving frame 41 is installed. The moving frame 41 is in an L-shaped structure. A rectangular through groove is arranged inside the moving frame 41, and a circular through hole is arranged at the lower end of the moving frame 41. A dust collection frame 42 is installed at the lower end of the moving frame 41. A flue gas filtering component 43 is installed at the lower end inside the rectangular through groove, a flue gas purification component 44 is installed in the middle inside the rectangular through groove, and a lifting component 45 is installed at the upper end inside the rectangular through groove. A laser cutting head 46 is installed in the middle of the lifting component 45. The laser cutting head 46 passes through the middle parts of the flue gas filtering component 43 and the flue gas purification component 44 in sequence and reaches the lower end of the moving frame 41.

[0041] In the above technical solution, the laser cutting head 46 is used to perform laser cutting on the material to be cut. The height of the laser cutting head 46 can be adjusted through the lifting component 45. The flue gas generated by the cutting of the laser cutting head 46 is negatively pressured and filtered by the flue gas filtering component 43, and the filtered gas is further processed by the flue gas purification component 44 to ensure that the discharged gas meets the emission standards. The dust collection frame 42 can play a role in guiding the flue gas. At the same time, the large particle dust that does not enter the inside of the filtering component 43 will fall on the upper end of the dust collection frame 42, and the dust collection frame 42 can collect the dust to avoid secondary diffusion of the dust.

[0042] A sealing plate is installed at the upper end of the rectangular through groove on the moving frame 41. A circular hole is opened in the middle of the sealing plate. The gas filtered by the flue gas filtering component 43 and the flue gas purification component 44 is discharged outward through the circular hole in the middle of the sealing plate.

[0043] Refer to Figures 5-6 As shown in the figure, as a preferred technical solution of this embodiment, the dust collection frame 42 is in a rectangular structure. A conical through hole is arranged inside the dust collection frame 42, and the conical through hole is communicated with the circular through hole. A collection pad 421 is also installed in the middle of the upper end of the dust collection frame 42. The collection pad 421 is in an annular rubber structure, and the collection pad 421 extends into the circular through hole.

[0044] In the above technical solution, when cutting generates flue gas, under the action of negative pressure, the flue gas enters the inner side of the flue gas filtering component 43 through the conical through hole. At the same time, since there are a large number of particulate debris in the flue gas, the particulate debris that does not enter the inside of the flue gas filtering component 43 will fall downward on the inner side of the collection pad 421; after a long time, the dust collection frame 42 can be disassembled to clean the collected particulate impurities.

[0045] Refer to Figures 5-9As shown in the figure, as a preferred technical solution of this embodiment, the flue gas filtering assembly 43 includes an annular slide rail 431, a filtering frame 432, a filtering plate 433, a rotating mechanism 434 and a cleaning mechanism 435. Annular slide rails 431 are symmetrically arranged inside the rectangular through groove. The annular slide rail 431 at the lower end inside the rectangular through groove is installed on the moving frame 41, and the annular slide rail 431 at the upper end inside the rectangular through groove is installed at the lower end of the flue gas purification assembly 44. A filtering frame 432 is installed between the two annular slide rails 431. The filtering frame 432 is in a circular ring structure. Filtering grooves are evenly formed on the outer side of the filtering frame 432. Air holes communicating with the inside of the filtering grooves are evenly formed on the inner side surface of the filtering frame 432. A filtering plate 433 is installed at the outer end of the filtering groove. A rotating mechanism 434 is installed at the lower end inside the moving frame 41, and a cleaning mechanism 435 is installed on the inner wall of the moving frame 41. The gap between the outer side of the filtering frame 432 and the inner wall of the moving frame 41 is an adsorption space.

[0046] In the above technical solution, when a negative pressure is generated inside the adsorption space, the flue gas generated by cutting enters the filtering groove through the air holes. The filtering plate 433 filters the flue gas, so that the particles inside the flue gas stay on the inner side surface of the filtering plate 433. The filtered gas enters the adsorption space. At the same time, the rotating mechanism 434 can drive the filtering frame 432 to rotate intermittently. When a filtering plate 433 on the filtering frame 432 rotates to the inner side surface of the cleaning mechanism 435, the cleaning mechanism 435 first closes the outer side surface of the filtering plate 433 and then disassembles and removes the filtering plate 433, so that the filtering plate 433 can move into the cleaning mechanism 435. The filtering plate 433 can be cleaned by the way of back blowing, preventing impurities in the flue gas from accumulating on the inner side surface of the filtering plate 433 after long-term use and avoiding the phenomenon that the filtering plate 433 is blocked.

[0047] After the filtering plate 433 inside a filtering groove is cleaned, the rotating mechanism 434 drives the filtering frame 432 to rotate by a certain angle, so that the next filtering plate 433 above and below the filtering frame 432 rotates to the inner side surface of the cleaning mechanism 435. By repeating the above steps, the function of cleaning the filtering plates 433 on the filtering frame 432 one by one can be realized, improving the filtering efficiency of the filtering plates 433, ensuring the permeability of the filtering plates 433, and avoiding the phenomenon that the flue gas overflows due to untimely adsorption of the flue gas caused by the blockage of the filtering plates 433.

[0048] Continuing to refer to Fig. 9, as a preferred technical solution of this embodiment, the filtering plate 433 is in a rectangular structure. The middle part of the filtering plate 433 is a hollow structure. A filtering cloth bag is installed in the middle of the filtering plate 433. The filtering cloth bag is arranged in a wavy shape. Insertion rods are evenly installed on both sides of the filtering plate 433. The filtering plate 433 is inserted and fixed in the jacks on the filtering groove through the insertion rods. Unlocking holes are evenly arranged on the outer side surface of the filtering plate 433.

[0049] In the above technical solution, the filter plate 433 is installed and fixed by the insertion rod. When negative pressure is generated inside the adsorption space, the flue gas enters the inside of the filter tank through the air holes. The filter cloth bag in the middle of the filter plate 433 can filter the flue gas, so that impurities such as dust and particles in the flue gas can stay on the inner side of the filter cloth bag. When it is necessary to clean the filter plate 433, it is inserted into the unlocking hole through the inner side of the cleaning mechanism 435, and the insertion rod is squeezed and contracted inward, so that the insertion rod is separated from the insertion hole, so that the function of disassembling the filter plate 433 can be realized, which is convenient for cleaning the filter plate 433.

[0050] A limiting frame is also arranged inside the filter tank. The limiting frame is used to limit and block the filter plate 433. When the disassembled filter plate 433 is installed, the limiting frame can block the filter plate 433 to ensure that the insertion rod on the filter plate 433 can be accurately inserted into the insertion hole on the side wall of the filter tank.

[0051] Refer to Figures 4-7 As shown in the figure, as a preferred technical solution of this embodiment, the rotating mechanism 434 includes a rotating gear 4341 and an annular gear 4342. The rotating gear 4341 is installed inside the adsorption space through a bearing, and the rotating gear 4341 is connected to the output shaft of the motor. An annular gear 4342 is installed on the outer side of the lower end of the filter rack 432, and the annular gear 4342 meshes with the rotating gear 4341.

[0052] In the above technical solution, the motor can drive the rotating gear 4341 to rotate, and the rotating gear 4341 drives the annular gear 4342 to rotate through the meshing of gears, so that the function of rotating and adjusting the filter rack 432 can be realized.

[0053] Refer to Figures 7-10 As shown in the figure, as a preferred technical solution of this embodiment, the cleaning mechanism 435 includes a cleaning frame 4351, a telescopic cylinder 4352, a disassembly plate 4353, a turning plate 4354 and a collection rack 4355. The cleaning frame 4351 is installed inside the moving frame 41. An installation groove is opened in the middle of the cleaning frame 4351. The inner side of the cleaning frame 4351 is closely attached to the outer side of the filter rack 432. A telescopic cylinder 4352 is installed in the installation groove. A disassembly plate 4353 is installed at the end of the telescopic cylinder 4352. The disassembly plate 4353 cooperates with the filter plate 433. A turning plate 4354 is installed on the side wall of the installation groove through a pin shaft. The cross section of the turning plate 4354 is in an L-shaped structure. Collection areas are opened on both sides of the cleaning frame 4351. A flexible rubber is installed between the inner end of the turning plate 4354 and the collection area. The turning plate 4354 is in a louver structure, and a collection rack 4355 is installed in the collection area.

[0054] Refer to Figure 10As shown, as a preferred technical solution of this embodiment, disassembly rods are evenly arranged on the inner side surface of the disassembly plate 4353. A cam disc is arranged at the end of the disassembly rod, and the disassembly rod is rotatably arranged.

[0055] In the above technical solution, when it is necessary to disassemble and clean the filter plate 433 inside the filter tank, the telescopic cylinder 4352 drives the disassembly plate 4353 to move inward, so that the disassembly rods on the inner side surface of the disassembly plate 4353 can be inserted into the unlocking holes. The disassembly rods are rotatable, and the rotation of the cam disc at the end of the disassembly rod will squeeze the insertion rod, so that the insertion rod can be separated from the insertion hole, thereby achieving the purpose of disassembling the filter plate 433. After that, the telescopic cylinder 4352 drives the disassembly plate 4353 to contract to the inside of the installation groove, and the filter plate 433 will synchronously enter the inside of the installation groove. When the disassembly plate 4353 contracts, it will squeeze the turning plate 4354, so that the turning plate 4354 will turn inward, and when the turning plate 4354 turns, it will pull the flexible rubber to deform, so that when the two turning plates 4354 turn inward synchronously, the end of the installation groove will be closed.

[0056] Spray holes are evenly arranged on the inner side surface of the disassembly plate 4353. When it is necessary to clean the filter plate 433, high-pressure gas is generated through the spray holes, and the high-pressure gas will blow back the filter plate 433, so that dust, particles and other impurities adhered to the inner side surface of the filter plate 433 will be cleaned out. The cleaned dust, particles and other impurities enter the collection rack 4355 through the turning plate 4354 of the louver structure.

[0057] The collection rack 4355 is detachably arranged. Installation holes matching the collection rack 4355 are provided on the side wall of the moving frame 41. When the collection rack 4355 is used for a period of time, the collection rack 4355 can be disassembled to clean the collected dust, particles and other impurities.

[0058] Refer to Figures 5-6 As shown, as a preferred technical solution of this embodiment, the flue gas purification assembly 44 includes a fixing frame 441, a negative pressure fan 442 and a purification filter screen 443. The fixing frame 441 is installed in the middle of the rectangular through groove. The fixing frame 441 has an annular hollow structure. An annular groove is provided in the middle of the fixing frame 441. Connecting holes communicating with the adsorption space are evenly arranged at the lower end of the annular groove. A negative pressure fan 442 is installed in the middle of the annular groove, and a purification filter screen 443 is installed at the upper end inside the annular groove. The negative pressure fan 442 is used to drive the filtered gas inside the adsorption space to be discharged upward through the purification filter screen 443. An activated carbon layer and a membrane filtration layer are sequentially arranged inside the purification filter screen 443.

[0059] In the above technical solution, the high-speed rotation of the negative pressure fan 442 generates a downward negative pressure adsorption force, which makes the inside of the adsorption space in a negative pressure state, facilitating the upward movement of the filtered gas. The upward moving gas is filtered and purified by the purification filter screen 443. The harmful substances inside the flue gas can be effectively removed through the activated carbon layer and the membrane filtration layer, improving the purification effect of the flue gas.

[0060] Refer to Figure 6 As shown, as a preferred technical solution of this embodiment, a flexible sealing gasket 461 is installed between the middle of the fixing frame 441 and the laser cutting head 46.

[0061] In the above technical solution, the flexible sealing gasket plays a role in sealing between the laser cutting head 46 and the flue gas purification assembly 44, preventing the flue gas from moving upward through the gap between the laser cutting head 46 and the flue gas purification assembly 44, ensuring that the flue gas can be completely filtered and purified. At the same time, the laser cutting head 46 needs to move up and down to adjust the height during laser cutting. Therefore, when the lifting assembly 45 moves up and down, the flexible sealing gasket can effectively generate corresponding deformations to ensure the sealing effect between the laser cutting head 46 and the flue gas purification assembly 44.

[0062] Refer to Figure 5 As shown, as a preferred technical solution of this embodiment, the lifting assembly 45 includes a lifting frame 451, a connecting frame 452 and a connecting rod 453. The lifting frame 451 is installed at the upper end inside the rectangular through groove. The lifting frame 451 can move up and down along the length direction of the rectangular through groove. A connecting frame 452 is arranged in the middle of the lifting frame 451. Connecting rods 453 are evenly installed between the connecting frame 452 and the lifting frame 451. The upper end of the laser cutting head 46 is fixedly installed inside the connecting frame 452.

[0063] In the above technical solution, the lifting frame 451 can drive the laser cutting head 46 to move up and down, enabling the laser cutting head 46 to cut materials with different thicknesses.

[0064] Combined with the above structure, when the laser cutting and cutting bed with flue gas treatment function of the present invention cuts and processes the material to be cut, it is implemented according to the following steps:

[0065] S1: Material positioning and equipment startup

[0066] Place the material to be cut on the workbench 2, and set the cutting path parameters through the numerical control unit 3. After starting the equipment, the transverse electric slide rail 31 drives the mounting seat 32 to move horizontally along the machine tool main body 1, driving the cross beam frame 33 and the longitudinal electric slide rail 34 to move together, so that the cutting unit 4 moves to the initial processing position. The lifting assembly 45 adjusts the laser cutting head 46 to the preset height to ensure the cutting accuracy.

[0067] S2: Laser Cutting and Synchronous Flue Gas Adsorption

[0068] The laser cutting head 46 emits a high-energy laser beam to cut the material. At the same time, the negative pressure fan 442 is started to create a negative pressure in the adsorption space. The dust and debris generated by cutting are guided by the conical through-hole of the dust collection rack 42 and sucked into the flue gas filtration assembly 43. The large-particle debris falls on the collection pad 421 due to gravity to avoid diffusion. The flue gas enters the filtration tank through the air holes, and the particulate impurities are intercepted by the wavy filter cloth bag of the filter plate 433. The gas after preliminary filtration enters the adsorption space.

[0069] S3: Automatic Cleaning of Filter Plate and Impurity Recycling

[0070] The rotating mechanism 434 periodically drives the annular gear 4342 to drive the filter rack 432 to rotate intermittently, so that a single filter plate 433 is aligned with the cleaning mechanism 435. The telescopic cylinder 4352 pushes the disassembly plate 4353 to insert into the unlocking hole, and the cam disc squeezes the insertion rod to unlock the filter plate 433. The disassembly plate 4353 retracts to pull the filter plate 433 into the cleaning frame 4351. The disassembly plate 4353 drives the flipping plate 4354 to seal the installation groove. High-pressure gas blows back the filter cloth bag through the spray holes to remove the adhered particles. The debris falls into the collection rack 4355 through the louver-shaped flipping plate 4354. The cleaned filter plate 433 is reinstalled into the filtration tank, and the limit rack ensures the accurate reset of the insertion rod.

[0071] S4: Multi-stage Purification and Gas Discharge

[0072] The gas after preliminary filtration enters the annular groove of the flue gas purification assembly 44 through the connection hole. The negative pressure fan 442 drives the gas to pass upward through the purification filter screen 443. The activated carbon layer adsorbs harmful gases, and the membrane filtration layer intercepts ultrafine particles. The finally purified gas is discharged from the top of the moving frame 41. The flexible gasket ensures the sealing performance of the purification assembly 44 when the laser cutting head 46 moves up and down to prevent flue gas leakage.

[0073] S5: Cutting Completion and Maintenance Operations

[0074] After cutting is completed, the numerical control unit 3 resets the cutting unit 4. The dust collection rack 42 is regularly disassembled to clean the debris on the collection pad 421, and the collection rack 4355 is taken out to process the back-blowing impurities. The cyclic cleaning mechanism of the filter rack 432 and the replaceable design of the purification filter screen 443 ensure the filtration efficiency and environmental protection compliance of the long-term operation of the equipment.

[0075] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser cutting machine with fume treatment function, characterized in that: include: The machine tool body (1) is of rectangular structure, and a rectangular groove is provided in the middle of the upper end of the machine tool body (1); A workbench (2) is installed inside the rectangular groove, and the workbench (2) is used to support the material to be cut; A numerical control unit (3) mounted on the upper end of the machine tool body (1); A cutting unit (4) is mounted on the numerical control unit (3), the numerical control unit (3) is used to drive the cutting unit (4) to move in a horizontal direction, and the cutting unit (4) is used to cut the material to be cut and collect and process the smoke generated by the cutting; The cutting unit (4) comprises a moving frame (41), a dust collecting frame (42), a smoke filter assembly (43), a smoke purification assembly (44), a lifting assembly (45) and a laser cutting head (46). The moving frame (41) is installed at the middle of the front end of the numerical control unit (3). The moving frame (41) is in an L-shaped structure. A rectangular through slot is arranged inside the moving frame (41). A circular through hole is arranged at the lower end of the moving frame (41). The dust collecting frame (42) is installed at the lower end of the moving frame (41). A smoke filter assembly (43) is installed at the lower end of the rectangular through slot. A smoke purification assembly (44) is installed at the middle of the rectangular through slot. A lifting assembly (45) is installed at the upper end of the rectangular through slot. A laser cutting head (46) is installed at the middle of the lifting assembly (45). The laser cutting head (46) passes through the middle of the smoke filter assembly (43) and the smoke purification assembly (44) in sequence and reaches the lower end of the moving frame (41).

2. The laser cutting machine with fume treatment function according to claim 1 is characterized in that: The dust collecting frame (42) is of rectangular structure, a conical through hole is arranged inside the dust collecting frame (42), the conical through hole is connected with the circular through hole, a collecting pad (421) is also installed in the middle of the upper end of the dust collecting frame (42), the collecting pad (421) is of an annular rubber structure, and the collecting pad (421) extends into the circular through hole.

3. The laser cutting machine with fume treatment function according to claim 2 is characterized in that: The smoke filter assembly (43) comprises an annular slide rail (431), a filter frame (432), a filter plate (433), a rotating mechanism (434) and a cleaning mechanism (435), wherein the annular slide rails (431) are symmetrically arranged inside the rectangular through groove, the annular slide rail (431) at the lower end of the rectangular through groove is mounted on the moving frame (41), the annular slide rail (431) at the upper end of the rectangular through groove is mounted on the lower end of the smoke purification assembly (44), and a filter plate (433) is installed between the two annular slide rails (431). The filter frame (432) is in a circular ring structure, the filter frame (432) is evenly provided with filter grooves on the outside, the filter frame (432) is evenly provided with air holes connected with the inside of the filter grooves on the inside surface, a filter plate (433) is installed at the outer end of the filter groove, a rotating mechanism (434) is installed at the lower end of the inside of the mobile frame (41), a cleaning mechanism (435) is installed on the inner wall of the mobile frame (41), and the gap between the outer side of the filter frame (432) and the inner wall of the mobile frame (41) is an adsorption space.

4. The laser cutting machine with fume treatment function according to claim 3 is characterized in that: The filter plate (433) is of a rectangular structure, the middle of the filter plate (433) is of a hollow structure, a filter bag is installed in the middle of the filter plate (433), the filter bag is arranged in a wave shape, plug rods are evenly installed on both sides of the filter plate (433), the filter plate (433) is fixed to the filter tank by plugging the plug rods, and unlocking holes are evenly arranged on the outer surface of the filter plate (433).

5. The laser cutting machine with fume treatment function according to claim 4 is characterized in that: The rotating mechanism (434) comprises a rotating gear (4341) and a ring gear (4342); the rotating gear (4341) is installed inside the adsorption space via a bearing; the rotating gear (4341) is connected to the output shaft of the motor; a ring gear (4342) is installed on the outer side of the lower end of the filter frame (432); the ring gear (4342) is meshed with the rotating gear (4341).

6. The laser cutting machine with fume treatment function according to claim 5, characterized in that: The cleaning mechanism (435) comprises a cleaning frame (4351), a telescopic cylinder (4352), a disassembly plate (4353), a flip plate (4354) and a collection frame (4355). The cleaning frame (4351) is installed inside the movable frame (41). A mounting groove is provided in the middle of the cleaning frame (4351). The inner side surface of the cleaning frame (4351) is tightly attached to the outer side surface of the filter frame (432). A telescopic cylinder (4352) is installed in the mounting groove. A disassembly plate (4353) is installed at the end of (4352), and the disassembly plate (4353) cooperates with the filter plate (433). A flip plate (4354) is installed on the side wall of the installation groove through a pin shaft. The cross-section of the flip plate (4354) is an L-shaped structure. Collection areas are opened on both sides of the cleaning frame (4351). Flexible rubber is installed between the inner end of the flip plate (4354) and the collection area. The flip plate (4354) is a louver structure, and a collection rack (4355) is installed in the collection area.

7. The laser cutting machine with fume treatment function according to claim 6, characterized in that: Disassembly rods are evenly arranged on the inner side of the disassembly plate (4353), and a cam disc is arranged at the end of the disassembly rod, and the disassembly rod can be rotatably arranged.

8. The laser cutting machine with fume treatment function according to claim 7, characterized in that: The flue gas purification component (44) comprises a fixing frame (441), a negative pressure fan (442) and a purification filter (443); the fixing frame (441) is installed in the middle of the rectangular through groove; the fixing frame (441) is an annular hollow structure; an annular groove is arranged in the middle of the fixing frame (441); connection holes connected to the adsorption space are evenly arranged at the lower end of the annular groove; a negative pressure fan (442) is installed in the middle of the annular groove; a purification filter (443) is installed at the upper end of the annular groove; the negative pressure fan (442) is used to drive the filtered gas in the adsorption space to be discharged upward through the purification filter (443).

9. The laser cutting machine with fume treatment function according to claim 8, characterized in that: A flexible sealing pad (461) is installed between the middle of the fixing frame (441) and the laser cutting head (46).

10. The laser cutting machine with fume treatment function according to claim 9, characterized in that: The lifting assembly (45) comprises a lifting frame (451), a connecting frame (452) and a connecting rod (453); the lifting frame (451) is installed at the upper end of the rectangular through slot; the lifting frame (451) can move up and down along the length direction of the rectangular through slot; a connecting frame (452) is arranged in the middle of the lifting frame (451); connecting rods (453) are evenly installed between the connecting frame (452) and the lifting frame (451); and the upper end of the laser cutting head (46) is fixedly installed inside the connecting frame (452).

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