Laser cutting equipment for metal honeycomb aluminum plate machining

Abstract

The invention relates to the technical field of laser cutting equipment, in particular to laser cutting equipment for metal honeycomb aluminum plate machining. A cutting bed; the cutting mechanism is assembled on the cutting bed, and the cutting mechanism comprises a laser cutting head which moves in the horizontal transverse direction, the horizontal longitudinal direction and the vertical direction to execute cutting; the linkage rack is fixed on the horizontal longitudinal moving part of the cutting mechanism and extends to the lower part of the cutting bed; and the adsorption fixing frame is fixedly assembled on the cutting bed and is used for adsorbing and fixing the honeycomb aluminum plate so as to prevent the honeycomb aluminum plate from moving. According to the cutting equipment provided by the invention, the problems of non-uniform temperature distribution, existence of temperature gradient, unreasonable cooling position control and the like on the upper plate surface and the lower plate surface when the metal honeycomb aluminum plate is cut are further solved; the cutting quality problems such as plate deformation and layering and slag residues and burrs at the position close to the lower part of the cutting edge of the plate still occur, so that the laser cutting quality of the metal honeycomb aluminum plate is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting equipment, and specifically provides a laser cutting equipment for processing metal honeycomb aluminum plates. Background Art

[0002] A metal honeycomb aluminum plate is a composite plate composed of two layers of aluminum panels and a honeycomb-shaped metal core sandwiched in the middle. It is formed by a specific process and has the characteristics of light weight, high strength, strong corrosion resistance, and good sound insulation and heat insulation performance. It is widely used in fields such as building decoration, transportation, and aerospace. In the actual production process, the finished honeycomb aluminum plate also needs to be further cut according to the actual size and structure of the used plate, including cutting edges and opening holes, etc. Under the existing technology, laser cutting by laser cutting equipment is a common and efficient cutting method.

[0003] The laser cutting equipment uses a laser cutting head to emit a high-energy laser beam that is focused on the cutting point of the plate for cutting. During cutting, the temperature at the cutting point rises sharply, generating a large amount of heat, and will spread and transfer to the area near the cutting of the plate, forming a heat-affected zone. The aluminum panels in the metal honeycomb aluminum plate and the metal plates constituting the honeycomb core are generally relatively thin, and the aluminum panel and the honeycomb core are in a layer composite structure. When laser cutting the metal honeycomb aluminum plate, due to the high temperature problem, at least the following quality problems may occur to the metal honeycomb aluminum plate: 1) Heat-affected zone: During the laser cutting process, due to the heat conduction to the surrounding area of the cutting point of the plate, the microstructure changes, which may cause the hardness increase or brittleness enhancement of the plate area near the cutting point, affecting the overall performance of the cutting edge of the plate.

[0004] 2) Deformation: High temperature can cause the relatively thin plate to bend or warp. Especially in the case of uneven heating or cooling, the deformation will seriously affect the flatness and dimensional accuracy of the plate. For the metal honeycomb aluminum plate, it may also cause delamination between the aluminum panel and the metal core.

[0005] 3) Burrs and dross: Although this quality problem is mainly related to the laser cutting parameters, too high temperature may also cause more molten materials to fail to be effectively removed, thus leaving burrs or dross on the cutting edge, affecting the flatness quality of the cutting edge.

[0006] 4) Cracks: It may cause cracks to occur, affecting the mechanical strength of the plate.

[0007] Based on the above-mentioned quality problems, under the existing technology, laser cutting equipment is generally provided with an auxiliary gas cooling mechanism, which is often integrated and installed at one end of the laser cutting head. The auxiliary gas is used for timely cooling and blowing away the slag, thereby weakening the impact of the high cutting temperature on the quality defects of the plate to a certain extent. However, the existing auxiliary gas cooling mechanism can only cool the upper plate surface of the plate from top to bottom as the laser cutting head moves, and the cooling position is not adjustable. However, for composite plates such as metal honeycomb aluminum plates, especially when the metal honeycomb aluminum plates are thicker, only cooling the upper plate surface of the plate can easily cause uneven temperature distribution at the upper and lower plate surfaces of the plate cutting, and there is a temperature gradient, so that the plate deformation, stratification, and slag residue and burrs near the lower edge of the plate cutting still occur. Cutting quality problems such as burrs affect the final cutting and forming quality of the metal honeycomb aluminum plate. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a metal honeycomb aluminum plate processing laser cutting equipment, which is used to solve the problems mentioned in the above background technology.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: a metal honeycomb aluminum plate processing laser cutting equipment, comprising: a cutting bed; a cutting mechanism, which is mounted on the cutting bed, and the cutting mechanism comprises a laser cutting head that moves in the horizontal, longitudinal and vertical directions to perform cutting; a linkage frame, which is fixed on the horizontal longitudinal moving part of the cutting mechanism and extends to the bottom of the cutting bed; a cooling assembly, which is fixed on the linkage frame and is located below the cutting bed, and the cooling assembly is located directly below the laser cutting head; under the linkage cooperation between the linkage frame and the cutting mechanism, the cooling assembly moves with the laser The cutting head moves synchronously in the horizontal lateral and horizontal longitudinal directions and keeps the relative position unchanged; the cooling assembly includes a plurality of spray guns which are hingedly installed and distributed circumferentially around the laser cutting head, the spray guns spray cooling gas to cool the cutting area of ​​the lower plate surface of the honeycomb aluminum plate and simultaneously blow away and clean the slag and metal chips, the nozzle of the spray gun is biased toward the laser cutting head, and the deflection and elevation angles of the plurality of spray guns relative to the laser cutting head are synchronously adjustable, and the gas injection angle is changed by adjusting the deflection and elevation angle of the spray gun, thereby changing the adjustment accuracy of the heat-affected zone of the plate; and an adsorption fixing frame, which is fixedly mounted on the cutting bed and is used to adsorb and fix the honeycomb aluminum plate to prevent the plate from moving.

[0010] Preferably, the cooling assembly comprises: a base fixed on the linkage frame; a horn fixed on the base and the central axis of which coincides with the focus of the laser cutting head; a plurality of windows circumferentially distributed on the horn corresponding to the plurality of spray guns; A plurality of hinge seats, which are arranged in one-to-one correspondence and cooperation with a plurality of spray guns, have a shell structure and are all fixed on the outer wall of the horn-shaped cylinder. The spray guns are hinged in the corresponding hinge seats, and the spray nozzles are exposed from the corresponding windows. One end of the spray gun far away from the spray nozzle extends outwards from the hinge seat. And an adjustment driving mechanism, which is fixed on the base and is used to drive the plurality of spray guns to synchronously adjust the deflection elevation angle.

[0011] Preferably, the spray gun includes: a spray head, which is in the shape of a round cake, is internally hinged in the hinge seat, and the spray nozzle of the spray head is located on the cylindrical surface; an air pipe, which is fixedly connected to the cylindrical surface of the spray head and extends outwards from the hinge seat.

[0012] Preferably, the adjustment driving mechanism includes: a slewing bearing, which is fixed on the base; a driving rotary cylinder, which is fixed on the inner ring of the slewing bearing; a guiding cylinder, which is fixed on the base and is coaxially arranged with the horn-shaped cylinder; a plurality of driving members, which are arranged in one-to-one correspondence and cooperation with the plurality of spray guns, are connected between the driving rotary cylinder and the air pipes of the spray guns, and are all guided by the guiding cylinder. Under the guidance of the guiding cylinder, when the driving rotary cylinder rotates, the driving rotary cylinder drives the spray gun to rotate around the hinge axis to adjust the deflection elevation angle.

[0013] Preferably, the cutting bed includes: a support frame; the cutting mechanism is assembled on the support frame; a serrated bed surface, which is fixed inside the frame of the support frame. The serrated bed surface includes a plurality of serrated plates arranged in a row and all horizontally fixed inside the frame of the support frame. A plurality of connecting frames are fixedly connected in series between the plurality of serrated plates. The connecting frame includes two connecting plates both fixed on the plurality of serrated plates, and a plurality of parallel connecting blocks are fixed between the two connecting plates.

[0014] Preferably, the adsorption fixing frame includes: a lifting frame, which is installed in the frame of the support frame in a lifting and sliding manner; a pipeline frame, which is installed in a vertically sliding and matching manner above the lifting frame. The pipeline frame is a hollow pipeline structure for externally connecting a vacuum pipeline; a plurality of springs, with both ends respectively fixed on the pipeline frame and the lifting frame; a plurality of shunt pipes, which are all horizontally communicated inside the pipeline frame and are distributed in one-to-one correspondence directly below the plurality of connecting frames; a plurality of support rods are vertically communicated on the shunt pipes. The plurality of support rods on the same shunt pipe vertically pass through the plurality of parallel connecting blocks of the connecting frame at the upper position one by one from above. The support rod is a pipe structure, and air holes for vacuum adsorption are arranged at the top end of the support rod.

[0015] Preferably, the driving member includes: a slider slidably mounted on the guiding cylinder in the radial direction; a moving pin vertically fixed on the slider; a plurality of driving blocks are fixed on the inner wall of the driving rotating cylinder and are arranged in one-to-one correspondence and cooperation with the plurality of driving members. A guiding hole is vertically formed through the driving block and is inclined with respect to the radial direction of the driving rotating cylinder. The guiding hole extends on the horizontal plane, and the moving pin moves along the guiding hole on the driving block at the corresponding position; at least one telescopic rod, the bottom end of which is vertically fixed on the slider; a connecting sleeve, hinged to the top end of the telescopic rod and sleeved and fixed on the air pipe of the spray gun at the corresponding position.

[0016] Preferably, the linkage frame includes: two suspension plates, both fixed on the horizontally longitudinal moving part of the cutting mechanism; a transverse moving guide rail horizontally fixed between the two suspension plates; an electric slider horizontally slidably mounted on the transverse moving guide rail, and the electric slider moves horizontally in the transverse direction on the transverse moving guide rail; the base is fixed to the top end of the electric slider.

[0017] Preferably, a central cylinder is fixed at the center of the base, and the horn-shaped cylinder is sleeved and fixed on the inner wall of the central cylinder; the guiding cylinder is sleeved and fixed on the outer wall of the central cylinder.

[0018] Preferably, a ceramic coating is attached and fixed on the inner side wall surface of the horn-shaped cylinder.

[0019] The above technical solution has the following advantages or beneficial effects: The present invention provides a laser cutting device for processing metal honeycomb aluminum plates, which is provided with a linkage frame that moves synchronously with the cutting mechanism, and a cooling assembly that can cool the lower plate surface of the plate is assembled on the linkage frame, so as to realize synchronous cooling of the upper and lower plate surfaces of the plate during cutting, which can greatly reduce the temperature difference gradient between the upper and lower plate surfaces of the plate during cutting, ensure the uniformity of cooling at the cutting position of the plate, and form a circumferential cooling isolation zone around the laser cutting head in the cooling assembly to the vicinity of the cutting point of the plate, avoiding the rapid conduction of cutting heat to the vicinity of the cutting point of the plate. The adjustable design of the spray gun in the cooling assembly with a bias elevation angle can greatly improve the rationality of controlling the heat influence area; in addition, the synchronous tracking type auxiliary cooling design of the cooling assembly improves the efficiency and pertinence of gas-assisted cooling, can reduce the usage amount of cooling gas, and the cooling assembly can blow and clean the slag and metal debris formed by cutting the plate. In summary, the cutting device provided by the present invention changes the existing cutting and cooling method of metal honeycomb aluminum plates, adopts the method of synchronous cooling of the upper and lower plates of the plate, improves the efficiency and rationality of cutting and cooling, and further solves the problems of plate deformation, delamination, and slag residue and burrs near the lower position of the cutting edge of the plate during the cutting of metal honeycomb aluminum plates due to uneven temperature distribution, temperature gradient, and unreasonable cooling position control on the upper and lower plate surfaces, so as to ensure the quality of laser cutting of metal honeycomb aluminum plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention, its features, shape, and advantages will become more apparent by reading the following detailed description of non - restrictive embodiments with reference to the accompanying drawings. In all the drawings, the same reference numerals indicate the same parts, and the drawings are not deliberately drawn to scale. The emphasis is on showing the gist of the present invention.

[0021] Figure 1 is a three - dimensional structural schematic diagram of a laser cutting device for processing metal honeycomb aluminum plates provided by the present invention.

[0022] Figure 2 is a side view of a laser cutting device for processing metal honeycomb aluminum plates provided by the present invention.

[0023] Figure 3 is a three - dimensional structural schematic diagram of an integrated machine frame equipped with a cooling assembly and assembled with a cutting mechanism.

[0024] Figure 4 is a three - dimensional structural schematic diagram of a serrated bed surface.

[0025] Figure 5 is a three - dimensional assembly drawing of an adsorption fixing frame assembled on a cutting bed after removing the serrated plate.

[0026] Figure 6 is a three - dimensional structural diagram of a cooling assembly.

[0027] Figure 7 is a three - dimensional sectional view of the assembly structure of a base, a horn tube, and a guide tube.

[0028] Figure 8 is a three - dimensional structural diagram of a hinge seat.

[0029] Figure 9 is a three - dimensional structural diagram of an assembly of a driving part and a spray gun.

[0030] Figure 10 is a three - dimensional structural schematic diagram of a metal honeycomb aluminum plate.

[0031] In the figure: 1. Cutting bed; 11. Support frame; 12. Serrated bed surface; 121. Serrated plate; 122. Serial connection frame; 1221. Fixed plate; 1222. Serial connection plate; 1223. Parallel connection block.

[0032] 2. Cutting mechanism; 21. Gantry frame; 22. Laser cutting head.

[0033] 3. Integrated machine frame; 31. Suspension plate; 32. Cross - movement guide rail; 33. Electric slider.

[0034] 4. Cooling assembly; 41. Base; 411. Central cylinder; 42. Horn cylinder; 421. Window; 43. Hinge seat; 44. Spray gun; 441. Air pipe; 442. Nozzle; 45. Adjusting drive mechanism; 451. Slewing bearing; 452. Driving drum; 4521. Gear ring; 4522. Driving block; 4523. Guide hole; 453. Guide cylinder; 4531. Slide rail; 454. Driving part; 4541. Slide block; 4542. Moving pin; 4543. Telescopic rod; 4544. Connecting sleeve.

[0035] 5. Adsorption fixing frame; 51. Lifting frame; 52. Pipeline frame; 521. Guide rod; 522. Connector pipe; 53. Spring; 54. Shunt pipe; 55. Support rod. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Note: For the accuracy and uniformity of direction expression, in this article, the horizontal transverse, horizontal longitudinal, and vertical directions respectively correspond to the X, Y, and Z axes in the Cartesian coordinate system.

[0039] A laser cutting device for processing metal honeycomb aluminum plates, the structure of the metal honeycomb aluminum plate is as Figure 10 shown, as Figure 1 , Figure 4 and Figure 5As shown in the figure, the device includes a cutting bed 1 for horizontally placing a metal honeycomb aluminum plate; the cutting bed 1 includes a support frame 11 and a serrated bed surface 12 fixed within the frame of the support frame 11. The serrated bed surface 12 includes a plurality of serrated plates 121 that are evenly distributed along the horizontal longitudinal direction and are all horizontally welded within the frame of the support frame 11. A plurality of connecting frames 122 are commonly connected and fixed between the plurality of serrated plates 121, and the plurality of connecting frames 122 are evenly arranged and distributed in the horizontal transverse direction; the connecting frame 122 includes two fixing plates 1221 welded within the frame of the support frame 11 and two connecting plates 1222 horizontally welded between the two fixing plates 1221. The connecting plate 1222 is perpendicularly arranged relative to the serrated plate 121. Plug-in interfaces are provided on the connecting plate 1222 corresponding to each serrated plate 121. The serrated plate 121 is inserted and welded at the corresponding plug-in interfaces on the connecting plate 1222. A plurality of parallel connection blocks 1223 are also welded between the two connecting plates 1222 on the same connecting frame 122, and the plurality of parallel connection blocks 1223 are evenly distributed along the horizontal longitudinal direction. Circular guide holes are vertically and penetratingly formed on the parallel connection blocks 1223.

[0040] As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown in the figure, an adsorption fixing frame 5 for fixing the cutting of metal honeycomb aluminum plates is assembled on the cutting bed 1; the adsorption fixing frame 5 includes a lifting frame 51 in the shape of a rectangular frame, and a vertical slide rail 4531 is fixed inside the frame of the support frame 11. The lifting frame 51 is slidably installed on the vertical slide rail 4531; in this embodiment, an electric hydraulic cylinder (not shown in the figure) that can be vertically and fixedly installed is located on the support frame 11, and the bottom end of the lifting frame 51 is fixed to the output end of the electric hydraulic cylinder, so that the electric hydraulic cylinder drives the lifting frame 51 to lift and lower; a pipeline frame 52 in the shape of a rectangular frame is arranged above the lifting frame 51. The pipeline frame 52 is welded and connected by four frame beam pipelines to form a rectangular frame. On the pipeline frame 52, a row of guide rods 521 are vertically welded to the bottom ends of the two frame beam pipelines located in the horizontal longitudinal position. The guide rods 521 vertically penetrate and are slidably installed on the lifting frame 51. The pipeline frame 52 is vertically slidably installed on the lifting frame 51 through two rows of guide rods 521. A spring 53 is sleeved on each guide rod 521, and both ends of the spring 53 are welded to the pipeline frame 52 and the lifting frame 51 respectively; the pipeline frame 52 is a hollow pipeline structure. A joint pipe 522 is vertically welded and connected to the side wall of the frame beam pipeline located at one of the horizontal transverse positions of the pipeline frame 52. The end of the joint pipe 522 is connected to a vacuum pump through a pipeline; a plurality of shunt pipes 54 are horizontally welded and connected inside the frame of the pipeline frame 52, and the plurality of shunt pipes 54 are correspondingly distributed directly below a plurality of series connection frames 122; a plurality of support rods 55 are vertically welded and connected to the shunt pipes 54. A plurality of support rods 55 on the same shunt pipe 54 vertically penetrate through the guide holes of a plurality of parallel connection blocks 1223 of the series connection frame 122 at the upper position one by one; the support rod 55 is a pipe structure, and air holes for vacuum adsorption are provided at the top end of the support rod 55.

[0041] The support rod 55 is vertically penetrated and installed in the guide hole of the parallel connection block 1223, realizing the guiding and mating installation between the adsorption fixing frame 5 and the sawtooth bed surface 12. On the one hand, the sleeved support of the parallel connection block 1223 for the support rod 55 improves the strength of the support rod 55, thereby improving the stability of the adsorption fixing frame 5 for supporting the metal honeycomb aluminum plate. On the other hand, the parallel connection block 1223 provides a certain protection for the support rod 55, so that during the cutting process, more high-temperature molten slag is prevented from falling and contacting the support rod 55 to cause thermal deformation, so as to maintain the common support accuracy of the plurality of support rods 55.

[0042] When cutting a metal honeycomb aluminum plate, the plate can first be placed flat on the sawtooth bed surface 12, and the plate is aligned. Then, the electric hydraulic cylinder is started to drive the lifting frame 51 to rise, so that the pipeline frame 52 rises synchronously, and then the plate is horizontally lifted on the plane formed by the top surfaces of multiple support rods 55. Subsequently, the support rods 55 perform vacuum adsorption and fixation on the lower plate surface of the plate, so that the metal honeycomb aluminum plate is horizontally fixed and positioned, avoiding the movement of the plate during the cutting process and affecting the cutting accuracy. Finally, the lifting frame 51 descends, so that the pipeline frame 52 drives the plate to descend synchronously through multiple support rods 55, and then the plate falls on the sawtooth plate 121 of the sawtooth bed surface 12. At this time, regardless of whether the support ends of all the sawtooth plates 121 are at the same height, the sawtooth plate 121 supplements and provides more support points relative to the support rods 55, ensuring the stability of the plate placement. In addition, it should be added that in the present invention, since the pipeline frame 52 is elastically supported and installed on the lifting frame 51 through the spring 53, during the process of driving the plate to descend, it can buffer and place on the support end of the sawtooth plate 121, avoiding obvious indentations on the aluminum plate surface of the lower plate surface of the plate caused by hard pressing contact with the support end of the sawtooth plate 121 during the descent of the plate.

[0043] As Figure 1 , Figure 2 and Figure 3 shown, the cutting mechanism 2 is assembled on the cutting bed 1. The cutting mechanism 2 includes a gantry frame 21 and a laser cutting head 22. The bottom end of the gantry frame 21 is slidably installed horizontally and longitudinally on the top end of the support frame 11. The gantry frame 21 drives the laser cutting head 22 to move in the horizontal transverse, horizontal longitudinal, and vertical directions to perform cutting; the laser cutting head 22 is assembled on the vertically moving mobile end of the gantry frame 21. It should be noted that the gantry frame 21 and the laser cutting head 22 are both existing devices, and the laser cutting head 22 represents a complete set of laser systems including laser emitting devices. In addition, most of the existing laser cutting devices integrally assemble a cooling system at the laser cutting head 22 end for synchronously cooling the upper plate surface of the plate during cutting. In the present invention, the existing cooling system is still retained and assembled at the laser cutting head 22 end.

[0044] As Figure 1 , Figure 2 and Figure 3As shown, a linkage frame 3 is fixedly assembled on the gantry frame 21. The linkage frame 3 includes two suspension plates 31 respectively welded to the horizontal transverse ends of the frame parts that perform horizontal longitudinal movement on the gantry frame 21, and a transverse movement guide rail 32 horizontally welded to the bottom ends of the two suspension plates 31. The transverse movement guide rail 32 horizontally passes through below the serrated bed surface 12 in the horizontal transverse direction, and the transverse movement guide rail 32 also avoids the lifting frame 51 and is located below the lifting frame 51; an electric slider 33 is slidably installed on the transverse movement guide rail 32, and the electric slider 33 moves in the horizontal transverse direction on the transverse movement guide rail 32; a cooling assembly 4 for ejecting cooling auxiliary gas is fixed on the electric slider 33. Similarly, the cooling assembly 4 avoids the lifting frame 51 and is located below the lifting frame 51, and the cooling assembly 4 is located directly below the laser cutting head 22; in the present invention, the cooling assembly 4 maintains linkage with the gantry frame 21 through the linkage frame 3 as a medium. On the one hand, the entire linkage frame 3 moves horizontally longitudinally in synchronization with the frame parts that perform horizontal longitudinal movement on the gantry frame 21. On the other hand, the electric slider 33 and the horizontally moving components in the gantry frame 21 move horizontally transversely in synchronization, so that under the linkage cooperation between the linkage frame 3 and the gantry frame 21, the cooling assembly 4 moves horizontally transversely and horizontally longitudinally in synchronization with the laser cutting head 22 and maintains a relative position unchanged; it should be added that the displacement drives of both the electric slider 33 and the horizontally moving components in the gantry frame 21 that perform horizontal transverse movement are essentially driven by motors. Therefore, during the displacement process, the drive motors of the two can input the same displacement signal to achieve synchronous displacement drive. Or, an existing displacement sensor is assembled at the laser cutting head 22 end to be used for real-time monitoring of the horizontal transverse distance position of the laser cutting head 22 relative to the reference point. In the closed-loop control system composed of a displacement sensor, a signal controller, an execution motor, etc., the execution motor here refers to the drive motor used by the electric slider 33. The displacement sensor emits a position signal, the signal controller receives the position signal and sends a control signal to the execution motor, and the execution motor receives the control signal to achieve synchronous drive. The optimal method is selected for actual implementation to achieve synchronous linkage.

[0045] As Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown in the figure, the cooling assembly 4 includes a base 41 fixed to the electric slider 33 by bolts. A central cylinder 411 is welded at the center of the base 41, and the central cylinder 411 is coaxially arranged with the laser cutting head 22. A circular overlapping surface is reserved on the upper end surface of the base 41 within the central cylinder 411. A horn-shaped cylinder 42 is sleeved and welded within the central cylinder 411, and the bottom end of the horn-shaped cylinder 42 abuts against the overlapping surface. The horn mouth of the horn-shaped cylinder 42 faces upward, and the central axis of the horn-shaped cylinder 42 coincides with the focus of the laser cutting head 22. A ceramic coating is fixedly attached to the inner side wall surface of the horn-shaped cylinder 42. During the laser cutting process, the molten slag and metal debris generated and falling during cutting will be concentrated and fall into the horn-shaped cylinder 42, playing a role in concentrating and guiding the collection of cutting waste. The horn-shaped cylinder 42 can cover and protect the structure below the horn-shaped cylinder 42 in the cooling assembly 4, and the inner wall surface of the horn-shaped cylinder 42 with the ceramic coating can prevent the molten slag from directly contacting the metal material of the horn-shaped cylinder 42 itself. A plurality of windows 421 are circumferentially and evenly distributed on the horn-shaped cylinder 42. At each window 421 on the outer wall of the horn-shaped cylinder 42, a hinge seat 43 is correspondingly fixed by screws. The hinge seat 43 has a shell structure, and a spray gun 44 is correspondingly assembled at each hinge seat 43. The spray gun 44 includes a nozzle 442 in the shape of a round cake and an air pipe 441 welded and connected to the cylindrical surface of the nozzle 442. The nozzle 442 is internally hinged within the hinge seat 43, the spray port of the nozzle 442 is on the cylindrical surface and is biased towards the laser cutting head 22, and the air pipe 441 extends outwards from the hinge seat 43. The end of the air pipe 441 is connected to a branch hose. There is a pipe hole provided on the base 41, the branch hoses pass through the pipe hole, and multiple branch hoses are centrally docked on the same main hose. The main hose is connected to an external gas supply device. It should be noted that in this embodiment, nitrogen is used as the auxiliary cooling gas. Additionally, the connection pipeline system is not shown in the drawings.

[0046] As Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the deflection elevation angles of multiple spray guns 44 relative to the laser cutting head 22 are synchronously adjustable. An adjustment drive mechanism 45 for synchronously adjusting the deflection elevation angles of the multiple spray guns 44 is assembled on the base 41. The adjustment drive mechanism 45 includes a slewing bearing 451 fixed to the base 41 by screws. A drive drum 452 is welded to the inner ring of the slewing bearing 451. A guiding cylinder 453 is sleeved and welded on the central cylinder 411. A plurality of slide rails 4531 corresponding to the multiple spray guns 44 one by one are circumferentially distributed on the guiding cylinder 453. The direction of the slide rails 4531 is along the radial direction of the guiding cylinder 453. A plurality of drive blocks 4522 corresponding to the multiple spray guns 44 one by one are circumferentially distributed and welded on the inner wall of the drive drum 452. A guiding hole 4523 inclined relative to the radial direction of the drive drum 452 is vertically penetrated through the drive block 4522, and the guiding hole 4523 extends on the horizontal plane. A drive member 454 is assembled between each drive block 4522 and the spray gun 44 at the corresponding position. The drive member 454 includes a slider 4541 slidably mounted on the corresponding slide rail 4531. A moving pin 4542 is vertically welded on the slider 4541, and the moving pin 4542 moves along the guiding hole 4523 on the drive block 4522 at the corresponding position. Two telescopic rods 4543 are vertically welded on the slider 4541. A connecting sleeve 4544 is hinged between the tops of the two telescopic rods 4543. The connecting sleeve 4544 is sleeved and welded on the air pipe 441 of the spray gun 44 at the corresponding position. A gear ring 4521 is also welded on the drive drum 452. A motor capable of installing and assembling a gear cooperating with the gear ring 4521 is located on the base 41 for driving the drive drum 452 to rotate.

[0047] In the cooling assembly 4 provided by the present invention, the multiple spray guns 44 are circumferentially distributed around the laser cutting head 22. And under the linkage action of the linkage frame 3, the distribution positions of the multiple spray guns 44 relative to the laser cutting head 22 can always be kept unchanged. The multiple spray guns 44 are jointly used to synchronously cool the lower plate surface of the metal honeycomb aluminum plate. Before cutting, according to the specific thickness and material of the metal honeycomb aluminum plate, on the one hand, parameters such as the cutting speed, laser power, and laser focus position of the laser cutting equipment can be adjusted. On the other hand, the deflection elevation angle of the spray gun 44 can also be adjusted.

[0048] When adjusting the deflection elevation angle, the driving drum 452 is rotated by the motor. The driving drum 452 drives the slider 4541 to slide along the slide rail 4531 through the driving block 4522. The slider 4541 drives the spray gun 44 to rotate in the hinge seat 43 through two telescopic rods 4543 and the connecting sleeve 4544, and then adjusts the spraying angle of the nozzle 442 of the spray gun 44. During the laser cutting process, a large amount of heat is instantaneously generated at the cutting point of the sheet. On the one hand, a certain temperature needs to be maintained to ensure cutting. On the other hand, it is necessary to cool and dissipate heat in a timely manner to avoid cutting defects caused by excessive temperature. The purpose of synchronously adjusting the deflection elevation angles of multiple spray guns 44 is to accurately adjust and control the temperature influence area during cutting, so that the cooling position formed after adjusting the elevation angle falls in the most appropriate area, which can not only ensure the cutting temperature, but also minimize the impact of cutting high temperature on the cutting quality.

[0049] During actual cutting, after the metal honeycomb aluminum plate is adsorbed and fixed by the adsorption fixing frame 5 (adsorption fixing also avoids the possible movement of the sheet caused by the blowing and cooling of the cooling assembly 4), laser cutting can be carried out. During the cutting process, on the one hand, the cooling system at the end of the laser cutting head 22 can cool the upper plate surface of the sheet. Under the linkage of the linkage frame 3, the cooling assembly 4 can cool the lower plate surface of the sheet. In the present invention, the upper and lower plate surfaces of the sheet can be cooled synchronously during cutting, which can greatly reduce the temperature difference gradient between the upper and lower plate surfaces of the sheet during cutting and ensure the uniformity of cooling at the cutting position of the sheet. In the cooling assembly 4, the circumferential cooling distribution points formed around the laser cutting head 22 all the time constitute a circumferential cooling isolation zone near the cutting point of the sheet, avoiding the rapid conduction of cutting heat to the vicinity of the cutting point of the sheet. The adjustable design of the deflection elevation angle of the spray gun 44 in the cooling assembly 4 can greatly improve the rationality of controlling the heat influence area. In addition, the synchronous tracking type auxiliary cooling design of the cooling assembly 4 improves the efficiency and pertinence of gas-assisted cooling, can reduce the usage amount of cooling gas, and the cooling assembly 4 can blow and clean the molten slag and metal debris formed by the cutting of the sheet. To sum up, the cutting equipment provided by the present invention changes the cutting and cooling method of the existing metal honeycomb aluminum plate, adopts the method of synchronously cooling the upper and lower surfaces of the sheet, improves the efficiency and rationality of cutting and cooling, and further solves the cutting quality problems such as sheet deformation, delamination, and the existence of molten slag residue and burrs near the lower position of the cutting edge of the sheet due to uneven temperature distribution, temperature gradient, and unreasonable cooling position control at the upper and lower plate surface positions during the cutting of the metal honeycomb aluminum plate, so as to ensure the quality of laser cutting of the metal honeycomb aluminum plate.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0051] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0052] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A laser cutting device for processing metal honeycomb aluminum plates, characterized in that: Comprising: Cutting bed (1); Cutting mechanism (2), assembled on the cutting bed (1), the cutting mechanism (2) includes a laser cutting head (22) that moves along the horizontal transverse, horizontal longitudinal, and vertical directions to perform cutting; Linkage frame (3), fixed on the horizontal longitudinal movement part of the cutting mechanism (2) and extending below the cutting bed (1); Cooling assembly (4), fixed on the linkage frame (3) and located below the cutting bed (1), the cooling assembly (4) is directly below the laser cutting head (22); under the linkage cooperation between the linkage frame (3) and the cutting mechanism (2), the cooling assembly (4) moves synchronously with the laser cutting head (22) in the horizontal transverse and horizontal longitudinal directions and maintains a constant relative position; the cooling assembly (4) includes a plurality of spray guns (44) that are hingedly installed and circumferentially distributed around the laser cutting head (22), the spray guns (44) spray cooling gas to cool the cutting area of the lower plate surface of the honeycomb aluminum plate and synchronously blow and clean the molten slag and metal chips, the spray nozzles of the spray guns (44) are biased towards the laser cutting head (22), and the deflection elevation angles of the plurality of spray guns (44) relative to the laser cutting head (22) are synchronously adjustable. By adjusting the deflection elevation angle of the spray guns (44), the gas injection angle is changed, and then the adjustment accuracy of the heat affected zone of the plate is changed; And an adsorption fixing frame (5), fixedly assembled on the cutting bed (1) for adsorbing and fixing the honeycomb aluminum plate to prevent the plate from moving.

2. The laser cutting device for processing metal honeycomb aluminum plates according to claim 1, wherein: The cooling assembly (4) includes: Base (41), fixed on the linkage frame (3); Flared tube (42), fixed on the base (41) and the central axis coincides with the focus of the laser cutting head (22); a plurality of windows (421) corresponding to the plurality of spray guns (44) are circumferentially distributed on the flared tube (42); A plurality of hinge seats (43), corresponding to and cooperating with the plurality of spray guns (44), are in a shell structure and are all fixed on the outer wall of the flared tube (42), the spray guns (44) are hinged in the corresponding hinge seats (43) and the spray nozzles are exposed from the corresponding windows (421); the end of the spray gun (44) far from the spray nozzle extends outwards from the hinge seat (43); And an adjustment driving mechanism (45), fixed on the base (41) for driving the plurality of spray guns (44) to synchronously adjust the deflection elevation angle.

3. The laser cutting device for processing metal honeycomb aluminum plates according to claim 2, characterized in that: The spray gun (44) includes: Spray head (442), in a round cake shape, internally hinged in the hinge seat (43), and the spray nozzle of the spray head (442) is located on the cylindrical surface; Air pipe (441), fixedly connected to the cylindrical surface of the spray head (442) and extending outwards from the hinge seat (43).

4. A laser cutting device for processing metal honeycomb aluminum plates according to claim 3, characterized in that: The adjustment driving mechanism (45) includes: Slewing bearing (451), fixed on the base (41); Driving drum (452), fixed on the inner ring of the slewing bearing (451); Guide tube (453), fixed on the base (41) and coaxially arranged with the flared tube (42); A plurality of driving members (454), which are arranged in one-to-one correspondence and cooperation with a plurality of spray guns (44), are connected between the driving rotating cylinder (452) and the air pipes (441) of the spray guns (44), and are all guided by a guiding cylinder (453); under the guidance of the guiding cylinder (453), when the driving rotating cylinder (452) rotates, the driving rotating cylinder (452) drives the spray gun (44) to rotate around the hinge axis through the driving member (454) to adjust the deflection elevation angle.

5. A laser cutting device for processing metal honeycomb aluminum plates according to claim 1, characterized in that: The cutting bed (1) includes: A support frame (11); the cutting mechanism (2) is assembled on the support frame (11); A serrated bed surface (12), which is fixed inside the frame of the support frame (11). The serrated bed surface (12) includes a plurality of serrated plates (121) arranged in a row and horizontally fixed inside the frame of the support frame (11). A plurality of connecting frames (122) are fixedly connected in series between the plurality of serrated plates (121); the connecting frame (122) includes two connecting plates (1222) both fixed on the plurality of serrated plates (121), and a plurality of parallel connecting blocks (1223) are fixed between the two connecting plates (1222).

6. The laser cutting device for processing metal honeycomb aluminum plates according to claim 5, wherein: The adsorption fixing frame (5) includes: A lifting frame (51), which is installed in the frame of the support frame (11) in a lifting and sliding manner; A pipeline frame (52), which is vertically slidably installed above the lifting frame (51). The pipeline frame (52) is a hollow pipeline structure for externally connecting a vacuum pipeline; A plurality of springs (53), with both ends respectively fixed on the pipeline frame (52) and the lifting frame (51); A plurality of shunt pipes (54), which are all horizontally communicated inside the pipeline frame (52) and are distributed in one-to-one correspondence directly below the plurality of connecting frames (122); a plurality of support rods (55) are vertically communicated on the shunt pipes (54). The plurality of support rods (55) on the same shunt pipe (54) vertically pass through the plurality of parallel connecting blocks (1223) of the connecting frame (122) at the upper position one by one from above; the support rod (55) is a pipe structure, and air holes for vacuum adsorption are provided at the top end of the support rod (55).

7. A laser cutting device for processing metal honeycomb aluminum plates according to claim 4, characterized in that: The driving member (454) includes: A slider (4541), which is installed on the guiding cylinder (453) in a radial sliding manner; A moving pin (4542), which is vertically fixed on the slider (4541); a plurality of driving blocks (4522) are fixed on the inner wall of the driving rotating cylinder (452) and are arranged in one-to-one correspondence and cooperation with the plurality of driving members (454). A guiding hole (4523) is vertically penetrated through the driving block (4522) and is inclined radially with respect to the driving rotating cylinder (452). The guiding hole (4523) extends on the horizontal plane, and the moving pin (4542) moves along the guiding hole (4523) on the corresponding driving block (4522); At least one telescopic rod (4543), with the bottom end vertically fixed on the slider (4541); A connecting sleeve (4544), which is hinged at the top end of the telescopic rod (4543) and sleeved and fixed on the air pipe (441) of the corresponding spray gun (44).

8. The laser cutting device for processing metal honeycomb aluminum plates according to claim 2, characterized in that: The linkage frame (3) includes: Two suspension plates (31), which are both fixed on the horizontal longitudinal moving part of the cutting mechanism (2); The transverse movement guide rail (32) is horizontally fixed between two suspension plates (31); The electric slider (33) is horizontally slidably mounted on the transverse movement guide rail (32), and the electric slider (33) moves horizontally and transversely on the transverse movement guide rail (32); the base (41) is fixed to the top end of the electric slider (33).

9. A laser cutting device for processing metal honeycomb aluminum plates according to claim 4, characterized in that: A central cylinder (411) is fixed at the center of the base (41), and the horn cylinder (42) is sleeved and fixed on the inner wall of the central cylinder (411); the guiding cylinder (453) is sleeved and fixed on the outer wall of the central cylinder (411).

10. A laser cutting device for processing metal honeycomb aluminum plates according to claim 2, characterized in that: A ceramic coating is attached and fixed to the inner side wall surface of the horn cylinder (42).

Images