Intelligent laser cutting device and method for range hood shell production

Abstract

The application discloses an intelligent laser cutting device and method for range hood shell production and relates to the technical field of metal cutting. The intelligent laser cutting device and method for range hood shell production are characterized in that: through the cooperation between the cross guide rail mechanism, the driving mechanism, the first cutting placement table mechanism, the second cutting placement table mechanism, the connecting rod and the first gear, the driving mechanism transmits accurate power, the first gear and the connecting rod drive the double-cutting placement table mechanism to operate, and the cross guide rail mechanism completes the limit of the motion track, converts the circular motion into directional reciprocating motion, realizes the purpose that the double-cutting placement table mechanism alternately reaches the cutting center operation position, the laser cutting is performed on the operation position table body, the non-operation position table body can be fully cooled, the thermal deformation and material aging of the table body due to continuous heating are avoided, the service life of the cutting placement table mechanism components is prolonged, and the stability and positioning accuracy when the metal raw material plate is placed are ensured.

Description

Technical Field

[0001] This invention relates to the field of metal cutting technology, specifically to an intelligent laser cutting device and method for the production of range hood housings. Background Technology

[0002] With the rapid development of the home kitchen appliance industry, the material of the range hood shell, as a core structural component, has gradually been upgraded from ordinary cold-rolled sheet to 304 stainless steel. This places higher demands on processing precision, production efficiency, and appearance quality. Traditional sheet metal processes are no longer suitable for the production needs of multiple varieties, small batches, and high precision. Laser cutting technology, with its advantages of non-contact processing, smooth cuts, small deformation, and high flexibility, has been widely used in the production of range hood shells. This technology can complete precise operations from sheet material cutting and contour forming to hole processing, achieving efficient forming of complex structures and significantly improving production efficiency and product consistency.

[0003] The laser cutting machine disclosed in patent application CN214443846U is easy to clean and can effectively collect a large amount of debris generated during the cutting process, improving positioning accuracy and cutting precision. It has a simple overall structure, is easy to use, and is highly practical.

[0004] A comprehensive analysis of the above-mentioned patents reveals the following shortcomings: Existing intelligent laser cutting devices and methods for producing range hood housings involve cutting platforms that operate at high temperatures for extended periods. These platforms are prone to accumulating metal debris and impurities generated during laser cutting and are susceptible to thermal deformation. Furthermore, it is difficult to achieve alternating operation of the two cutting platforms and timely mutual cleaning and cooling. This results in decreased stability and positioning accuracy when placing subsequent metal raw material plates, ultimately affecting the processing precision and product quality of the laser cutting. Therefore, it is necessary to provide an intelligent laser cutting device and method for producing range hood housings to address these technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent laser cutting device and method for the production of range hood housings. It solves the problems of the cutting platform being in a high-temperature working state for a long time, the platform surface easily accumulating metal debris and impurities generated by laser cutting, and being prone to thermal deformation. However, it is difficult to achieve alternating operation of the two cutting platforms and timely cleaning and cooling, which leads to a decrease in stability and positioning accuracy when placing metal raw material plates, ultimately affecting the processing accuracy and product quality of laser cutting.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent laser cutting device for the production of range hood housings, comprising: A base is placed on the ground. An operating chassis is fixedly installed on the top of the base. A linear module is fixedly installed on the top of the inner cavity of the operating chassis. A laser cutting robotic arm is installed at the bottom of the linear module. A controller is fixedly installed on the left side of the operating chassis. A long slot is opened between the linear module and the top of the operating chassis. The top of the laser cutting robotic arm is connected to the controller via a cable. Transparent protective doors are provided at the front and rear ends of the operating chassis. Two cross guide rail mechanisms are symmetrically arranged on the top left and right sides of the base. A drive mechanism located between the outer sides of the two cross guide rail mechanisms is provided on the top of the base. A servo motor is fixedly installed on the lower left side of the drive mechanism. Both the cross guide rail mechanisms and the drive mechanism are located inside the operating box. The first cutting and placing platform mechanism is used to place the raw material plate of the range hood housing to be cut. The first cutting and placing platform mechanism is set between two cross guide rail mechanisms. The second cutting platform mechanism is used to work alternately with the first cutting platform mechanism in the working position. The second cutting platform mechanism is set between the two cross guide rail mechanisms. Connecting rods are provided between the left and right sides of the first and second cutting platform mechanisms. A first gear is fixedly set in the middle of the side of the two connecting rods that are far apart from each other.

[0007] Preferably, both of the cross guide rail mechanisms include a cross bracket. The bottom of the cross bracket is fixedly mounted on the top of the base by a frame. A vertical guide groove is provided on the side of the cross bracket away from the first cutting and placing table mechanism, and a horizontal guide groove is provided on the side of the cross bracket away from the first cutting and placing table mechanism. The vertical guide groove and the horizontal guide groove are arranged in a cross-shaped pattern. A first piston cylinder assembly is provided at the bottom front end of the cross bracket, and a second piston cylinder assembly is provided at the front upper end of the cross bracket. The first piston cylinder assembly is obtained by rotating the second piston cylinder assembly counterclockwise by ninety degrees around the center of the cross bracket.

[0008] Preferably, the second piston cylinder assembly includes a hollow cylinder, which is fixedly connected to the upper front end of the cross bracket. A piston block is slidably disposed between the inner wall of the hollow cylinder. A piston rod is fixedly disposed at the bottom of the piston block and slides through the bottom of the hollow cylinder. An air outlet valve located inside the hollow cylinder is fixedly disposed at the upper part of the piston rod. A bent push plate is fixedly disposed at the bottom of the piston rod. The upper rear end of the bent push plate is slidably disposed in a vertical guide groove. A spring is sleeved on the outside of the piston rod. The spring is located between the bottom of the hollow cylinder and the lower part of the bent push plate.

[0009] Preferably, an air inlet pipe is fixedly installed at the upper front end of the hollow cylinder, and an air inlet valve is fixedly installed in the middle of the air inlet pipe. The piston block, piston rod, and bending push plate are all hollow inside. The piston block, piston rod, and bending push plate are connected to each other. An exhaust hole communicating with the inside of the hollow cylinder is opened at the top of the piston block, and a docking hole is opened on the lower surface of the upper rear end of the bending push plate.

[0010] Preferably, the drive mechanism includes two side supports, both of which are fixedly mounted on the top of the base and located on the left and right sides of the two cross guide rail mechanisms, respectively. A protective cover is fixedly mounted on the side of the two side supports that are far apart from each other. A second gear is rotatably mounted on the upper part of the side of the two side supports that are close to each other via a short shaft. The ends of the two short shafts that are far apart from each other are rotatably inserted into the corresponding protective cover and fixedly fitted with a first sprocket. A long shaft is rotatably mounted between the lower parts of the side supports that are close to each other.

[0011] Preferably, the two ends of the long shaft are respectively rotatably inserted into the corresponding protective cover and fixedly fitted with second sprockets. Each first sprocket and the exterior of the adjacent second sprocket are meshed with a chain located inside the protective cover. The servo motor is fixedly installed on the left side of the left protective cover. The output shaft of the servo motor rotatably inserts through the side wall of the protective cover and is fixedly connected to the left end of the long shaft. Each second gear meshes with the adjacent first gear.

[0012] Preferably, the first cutting and placing platform mechanism includes a placing platform located between two cross supports. The upper surface of the placing platform has several T-shaped slots evenly distributed from left to right. A placing groove is provided at the rear end of the placing platform. A serrated support strip slides through each T-shaped slot. Slider blocks are fixedly installed on both the left and right sides of the placing platform. The sliders are slidably positioned within corresponding vertical guide grooves. The end of the slider away from the placing platform is rotatably connected to one end of an adjacent connecting rod. The slider is hollow inside. Openings are provided at the top and on the side closest to the placing platform. The opening at the top of the slider matches a docking hole. An exhaust bracket assembly is fixedly installed at the bottom of the placing platform. A baffle slides through the placing groove.

[0013] Preferably, the exhaust rack assembly includes a manifold pipe, which is fixedly connected to the bottom center of the placement platform. Several branch pipes are evenly fixedly connected to the front and rear ends of the manifold pipe from left to right. Several air outlet pipes are fixedly connected to the bottom of each branch pipe. The bottom of the air outlet pipe at the front of the manifold pipe is inclined forward, and the bottom of the air outlet pipe at the rear of the manifold pipe is inclined backward. The manifold pipe, the placement platform, and the slider are in a state of communication.

[0014] Preferably, the second cutting platform mechanism and the first cutting platform mechanism have the same structure. The second cutting platform mechanism is slidably disposed between two transverse guide grooves, and the slider in the second cutting platform mechanism is rotatably connected to the other end of the adjacent connecting rod.

[0015] This invention also provides an intelligent laser cutting method for the production of range hood housings, employing an intelligent laser cutting device for range hood housing production. The specific method includes the following steps: Step 1: The servo motor drives the drive mechanism to rotate. The drive mechanism drives the two first gears to rotate at the same speed and in the same direction, so that the first gears make circular motion. With the cooperation of the connecting rod, the first gears transmit the motion to the first cutting and placing stage mechanism and the second cutting and placing stage mechanism. At the same time, under the limiting action of the cross guide rail mechanism, the first cutting and placing stage mechanism and the second cutting and placing stage mechanism make up-down reciprocating motion. During the process, the first cutting and placing stage mechanism moves up and down along the two cross guide rail mechanisms, and the second cutting and placing stage mechanism moves back and forth along the two cross guide rail mechanisms. Step Two: When the first cutting platform mechanism is at the center of the two cross guide rail mechanisms, the servo motor stops working, and the position of the first cutting platform mechanism remains stationary. The raw material plate of the range hood housing to be cut is placed on top of the first cutting platform mechanism. The linear module drives the laser cutting robotic arm to move, and the laser cutting robotic arm performs laser cutting on the raw material plate below. After cutting, the raw material plate is removed, and the servo motor is restarted. At this time, the first cutting platform mechanism moves downward, and the second cutting platform mechanism moves forward. During this process, the movements of the first and second cutting platform mechanisms will not interfere with each other. As the mechanism moves forward, it triggers the cross guide mechanism to work, causing the cross guide mechanism to squeeze the internal gas into the second cutting and placing stage mechanism. The second cutting and placing stage mechanism then blows the surface of the first cutting and placing stage mechanism below, removing metal impurities generated during cutting and cooling the surface of the first cutting and placing stage mechanism. When the second cutting and placing stage mechanism is at the foremost position, the first cutting and placing stage mechanism is once again at the center of the two cross guide mechanisms. The servo motor stops working again, and the raw material plate is placed on top of the first cutting and placing stage mechanism. The laser cutting robot arm then performs laser cutting on the plate, and the plate is removed after cutting. Step 3: Restart the servo motor. The first cutting platform moves upward, and the second cutting platform moves backward. During the upward movement of the first cutting platform, the cross guide mechanism is triggered, causing it to force internal gas into the first cutting platform. This allows the first cutting platform to purge and cool the surface of the second cutting platform below. When the first cutting platform is at its highest point, the second cutting platform is at the center of the two cross guide mechanisms. The servo motor pauses again, and the raw material plate is placed on top of the second cutting platform. The laser cutting robotic arm then performs laser cutting on it. After cutting, the plate is removed, and the servo motor is restarted. The first cutting platform moves downward, and the second cutting platform moves backward. The first cutting platform is once again at the center of the two cross guide mechanisms, and the second cutting platform is at its rearmost position. The servo motor pauses again, and the cutting operation is repeated. This process allows the second and first cutting platforms to work alternately, each in a different position to support the raw material plate. Beneficial effects

[0016] This invention provides an intelligent laser cutting device and method for the production of range hood housings. Compared with the prior art, it has the following advantages: 1. An intelligent laser cutting device and method for producing range hood housings, comprising a cross guide rail mechanism, a drive mechanism, a first cutting platform mechanism, a second cutting platform mechanism, a connecting rod, and a first gear, wherein the drive mechanism transmits precise power, which drives the dual cutting platform mechanisms to operate via the first gear and the connecting rod, and the cross guide rail mechanism completes the motion trajectory limit, converting the circular motion into directional reciprocating motion, thereby achieving the purpose of the dual cutting platform mechanisms alternating to the cutting center working position. The working position platform is laser cut, while the non-working position platform can be fully cooled, avoiding thermal deformation and material aging of the platform due to continuous heating, extending the life of the cutting platform mechanism components, and thus ensuring the stability and positioning accuracy when placing metal raw material plates.

[0017] 2. An intelligent laser cutting device and method for producing range hood housings, comprising a servo motor, a second gear, a connecting rod, a first gear, a vertical guide groove, and a horizontal guide groove, wherein the drive mechanism is driven by a long shaft driven by a servo motor, which drives the second gears on both sides to rotate synchronously via a first sprocket and a chain meshing transmission, and then transmits power through a connecting rod meshing with the first gear. This allows for precise control of the movement position and start / stop timing of the cutting platform mechanism. With the precise limiting of the vertical and horizontal guide grooves of the cross guide rail mechanism, the circular motion of the first gear is converted into the directional reciprocating motion of the cutting platform mechanism, ensuring that it accurately resets to the cutting center working position each time. This enables precise alternating operation of the two platforms. While the platform at the working position is continuously cutting, the platform at the non-working position can be fully cooled, effectively reducing the high temperature of the platform caused by laser cutting, avoiding thermal deformation and material aging of the platform, and significantly extending the service life of each component of the cutting platform mechanism.

[0018] 3. An intelligent laser cutting device and method for producing range hood housings, comprising a slider, a first piston cylinder assembly, a second piston cylinder assembly, and an exhaust frame assembly, wherein when the cutting platform mechanism moves, the slider triggers the first or second piston cylinder assembly to work, compressing the internal gas into the hollow structure of the platform plate, and then directionally ejecting it through the exhaust pipe of the exhaust frame assembly. The gas effectively cleans the laser-cut metal debris and impurities on the upper surface of the other cutting platform mechanism located below, preventing long-term residue from affecting the positioning and cutting accuracy of the subsequent raw material plate. Simultaneously, the gas flow automatically cools the high-temperature upper surface of the cutting platform mechanism after cutting, preventing significant deformation of the platform plate and serrated support strips due to high temperatures, ensuring the structural stability of the platform plate and serrated support strips, and thus guaranteeing subsequent cutting accuracy. By switching the positions of the two cutting platform mechanisms, the surface cleaning and cooling can be automatically achieved, eliminating the need for an additional air pump for cleaning and cooling, thus reducing device costs.

[0019] 4. An intelligent laser cutting device and method for producing range hood housings, comprising a serrated support strip, a T-shaped slot, and a baffle plate, wherein the serrated support strip adopts a serrated structure design, which significantly reduces the contact area between the raw material plate and the placement table, preventing the table from obstructing the laser beam during cutting and ensuring the accuracy of laser cutting, while allowing the blowing gas to pass smoothly through the gap and efficiently blow away the metal impurities generated during cutting. The T-shaped slot and placement groove on the placement table form a convenient disassembly and assembly structure. When the serrated support strip is worn or damaged, simply pull the baffle plate in the placement groove upward to release the restriction on the serrated support strip, and the damaged part can be pulled out along the T-shaped slot for targeted replacement without disassembling the entire table, greatly reducing maintenance difficulty and improving equipment maintenance efficiency.

[0020] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the operating chassis of the present invention; Figure 3 This is a first sectional perspective view of the present invention; Figure 4 This is a second sectional perspective view of the present invention; Figure 5 This is an exploded view of the drive mechanism and the first gear of the present invention; Figure 6 This is an assembly drawing of the cross guide rail mechanism, the first cutting and placing table mechanism, the second cutting and placing table mechanism, the connecting rod, and the first gear of the present invention. Figure 7 This is an exploded view of the cross guide rail mechanism, the first cutting and placing platform mechanism, the second cutting and placing platform mechanism, the connecting rod, and the first gear of the present invention. Figure 8 This is a perspective view of the cross guide rail mechanism of the present invention; Figure 9 This is an exploded view of the cross guide rail mechanism of the present invention; Figure 10 This is a cross-sectional perspective view of the second piston cylinder assembly of the present invention; Figure 11 This is a perspective view of the driving mechanism of the present invention; Figure 12 This is a perspective view of the first cutting and placing stage mechanism of the present invention; Figure 13 This is an exploded view of the first cutting and placing stage mechanism of the present invention; Figure 14 This is a perspective view of the platform on which the present invention is placed; Figure 15 For the present invention Figure 14 A magnified view of a section at point A in the middle; Figure 16 This is a perspective view of the slider of the present invention; Figure 17 This is a perspective view of the serrated support strip of the present invention; Figure 18 This is a perspective view of the exhaust bracket assembly of the present invention.

[0022] In the diagram: 1. Base; 2. Control box; 3. Linear module; 4. Laser cutting robotic arm; 5. Cross guide rail mechanism; 51. Cross support; 52. Vertical guide groove; 53. Horizontal guide groove; 54. First piston cylinder assembly; 55. Second piston cylinder assembly; 551. Hollow cylinder; 552. Piston block; 553. Piston rod; 554. Spring; 555. Bending push plate; 556. Air inlet pipe; 6. Drive mechanism; 61. Side support; 62. Protective cover; 63. Second gear; 64. 65. Sprocket; 66. Long shaft; 67. Second sprocket; 78. Chain; 79. First cutting platform mechanism; 70. Platform plate; 71. T-shaped slot; 72. Placement slot; 73. Serrated support bar; 74. Slider; 75. Exhaust rack assembly; 761. Manifold; 762. Branch pipe; 763. Exhaust pipe; 77. Baffle; 80. Second cutting platform mechanism; 91. Connecting rod; 10. First gear; 11. Servo motor; 12. Controller; 13. Cable; 14. Transparent protective door. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This invention provides two technical solutions: like Figures 1 to 4 A first embodiment is shown: an intelligent laser cutting device for producing range hood housings, comprising: The base 1 is placed on the ground. An operating box 2 is fixedly installed on the top of the base 1. A linear module 3 is fixedly installed on the top of the inner cavity of the operating box 2. A laser cutting robotic arm 4 is installed at the bottom of the linear module 3. A controller 12 is fixedly installed on the left side of the operating box 2. A long slot is opened between the linear module 3 and the top of the operating box 2. The top of the laser cutting robotic arm 4 is connected to the controller 12 by a cable 13, which passes through the long slot. Transparent protective doors 14 are provided at the front and rear ends of the operating box 2. Slag discharge ports are opened at the lower part of the front and rear ends of the operating box 2. A V-shaped guide plate is fixedly installed in the middle of the upper surface of the base 1. Two cross guide rail mechanisms 5 are symmetrically arranged on the top left and right sides of the base 1. A drive mechanism 6 located between the outer sides of the two cross guide rail mechanisms 5 is provided on the top of the base 1. A servo motor 11 is fixedly installed on the lower left side of the drive mechanism 6. Both the cross guide rail mechanism 5 and the drive mechanism 6 are located inside the operating housing 2. The first cutting and placing platform mechanism 7 is used to place the raw material plate of the range hood shell to be cut. The first cutting and placing platform mechanism 7 is set between two cross guide rail mechanisms 5. The second cutting platform mechanism 8 is used to work alternately with the first cutting platform mechanism 7. The second cutting platform mechanism 8 is located between the two cross guide rail mechanisms 5. Connecting rods 9 are provided between the left and right sides of the first cutting platform mechanism 7 and the second cutting platform mechanism 8. A first gear 10 is fixedly provided in the middle of the side of the two connecting rods 9 that are far apart from each other.

[0025] Through the cooperation of the cross guide rail mechanism 5, drive mechanism 6, first cutting and placing table mechanism 7, second cutting and placing table mechanism 8, connecting rod 9 and first gear 10, the drive mechanism 6 transmits precise power, which drives the double cutting and placing table mechanism to operate through the first gear 10 and connecting rod 9. The cross guide rail mechanism 5 completes the motion trajectory limit, converting the circular motion into directional reciprocating motion, so as to realize the purpose of the double cutting and placing table mechanism alternating to the cutting center working position. The working position table body is laser cut, and the non-working position table body can be fully cooled to avoid thermal deformation and material aging of the table body due to continuous heating, thus extending the life of the cutting and placing table mechanism components and ensuring the stability and positioning accuracy when placing metal raw material plates.

[0026] like Figures 5 to 18The second embodiment is shown, and its main difference from the first embodiment is that: an intelligent laser cutting device for producing range hood housings, each of the two cross guide rail mechanisms 5 includes a cross bracket 51. The bottom of the cross bracket 51 is fixedly mounted on the top of the base 1 by a frame. A vertical guide groove 52 is opened on the side of the cross bracket 51 away from the first cutting platform mechanism 7, and a horizontal guide groove 53 is opened on the side of the cross bracket 51 away from the first cutting platform mechanism 7. The vertical guide groove 52 and the horizontal guide groove 53 are arranged in a cross-shaped pattern. A first piston cylinder assembly 54 is provided at the bottom front end of the cross bracket 51, and a second piston cylinder assembly 55 is provided at the front upper end of the cross bracket 51. The first piston cylinder assembly 54 is surrounded by the second piston cylinder assembly 55 around the cross bracket. Obtained by rotating the center of 51 counterclockwise by 90 degrees, the second piston cylinder assembly 55 includes a hollow cylinder 551, which is fixedly connected to the upper front end of the cross bracket 51. A piston block 552 is slidably disposed between the inner wall of the hollow cylinder 551. A piston rod 553, which slides through the bottom of the hollow cylinder 551, is fixedly disposed at the bottom of the piston block 552. An air outlet valve located inside the hollow cylinder 551 is fixedly disposed at the upper part of the piston rod 553. A bent push plate 555 is fixedly disposed at the bottom of the piston rod 553. The upper rear end of the bent push plate 555 is slidably disposed in the vertical guide groove 52. A spring 554 is sleeved on the outside of the piston rod 553. The spring 554 is located between the bottom of the hollow cylinder 551 and the lower part of the bent push plate 555. The front end of the hollow cylinder 551... An air inlet pipe 556 is fixedly installed at the top, and an air inlet valve is fixedly installed in the middle of the air inlet pipe 556. The piston block 552, piston rod 553, and bending push plate 555 are all hollow. The interiors of the piston block 552, piston rod 553, and bending push plate 555 are connected. The top of the piston block 552 has an exhaust hole that communicates with the hollow cylinder 551. The lower surface of the upper rear end of the bending push plate 555 has a docking hole. The drive mechanism 6 includes two side supports 61. The two side supports 61 are fixedly installed on the top of the base 1 and are located on the left and right sides of the two cross guide rail mechanisms 5, respectively. The side of the two side supports 61 that is far apart from each other is fixedly equipped with a protective cover 62. The upper part of the side of the two side supports 61 that is close to each other is rotated by a short shaft. A second gear 63 is provided. The ends of two short shafts that are far apart from each other rotate through into the corresponding protective cover 62 and are fixedly fitted with first sprockets 64. A long shaft 65 is rotatably provided between the lower parts of the two side supports 61 that are close to each other. The two ends of the long shaft 65 rotate through into the corresponding protective cover 62 and are fixedly fitted with second sprockets 66. Each first sprocket 64 is meshed with the outside of the adjacent second sprocket 66 by a chain 67 located inside the protective cover 62. A servo motor 11 is fixedly provided on the left side of the left protective cover 62. The output shaft of the servo motor 11 rotates through the side wall of the protective cover 62 and is fixedly connected to the left end of the long shaft 65. Each second gear 63 meshes with the adjacent first gear 10. The first cutting and placing platform mechanism 7 includes a placing platform 71.The placement platform 71 is located between two cross supports 51. Several T-shaped slots 72 are evenly distributed from left to right on the upper surface of the placement platform 71. A placement groove 73 is provided at the rear end of the placement platform 71. A serrated support strip 74 slides through each T-shaped slot 72. Slider blocks 75 are fixedly installed on both the left and right sides of the placement platform 71. The sliders 75 are slidably positioned within corresponding vertical guide grooves 52. The end of the slider 75 furthest from the placement platform 71 is rotatably connected to one end of an adjacent connecting rod 9. The interior of the slider 75 is hollow. Openings are provided on the top and the side closest to the placement platform 71 of the slider 75. The opening at the top of the slider 75 matches the mating hole. An exhaust bracket assembly 76 is fixedly installed at the bottom of the placement platform 71. A baffle 77 slides through the placement groove 73. The exhaust rack assembly 76 includes a manifold 761, which is fixedly connected to the bottom center of the placement platform 71. Several branch pipes 762 are evenly fixedly connected to the front and rear ends of the manifold 761 from left to right. Several exhaust pipes 763 are fixedly connected to the bottom of each branch pipe 762. The bottom of the exhaust pipes 763 at the front of the manifold 761 slopes forward, and the bottom of the exhaust pipes 763 at the rear of the manifold 761 slopes backward. The manifold 761, the placement platform 71, and the slider 75 are internally connected. The second cutting placement platform mechanism 8 has the same structure as the first cutting placement platform mechanism 7. The second cutting placement platform mechanism 8 is slidably disposed between two transverse guide grooves 53. The slider 75 in the second cutting placement platform mechanism 8 is rotatably connected to the other end of the adjacent connecting rod 9.

[0027] Through the mutual cooperation between the servo motor 11, the second gear 63, the connecting rod 9, the first gear 10, the vertical guide groove 52, and the horizontal guide groove 53, the drive mechanism 6 is driven by the servo motor 11 to drive the long shaft 65, which is then driven by the meshing of the first sprocket 64 and the chain 67 to drive the second gears 63 on both sides to rotate synchronously. The power is then transmitted through the connecting rod 9 meshing with the first gear 10, which can precisely control the movement position and start and stop timing of the cutting platform mechanism. With the precise limiting of the vertical guide groove 52 and the horizontal guide groove 53 of the cross guide rail mechanism 5, the circular motion of the first gear 10 is converted into the directional reciprocating motion of the cutting platform mechanism, ensuring that it accurately resets to the cutting center working position each time, realizing the two-piece... With precise alternating operation, the non-working stage can be fully cooled while the working stage is continuously cutting, effectively reducing the high temperature of the table surface caused by laser cutting, avoiding thermal deformation and material aging of the stage, and significantly extending the service life of each component of the cutting stage mechanism. Through the cooperation between the slider 75, the first piston cylinder assembly 54, the second piston cylinder assembly 55, and the exhaust frame assembly 76, when the cutting stage mechanism moves, the slider 75 will trigger the first piston cylinder assembly 54 or the second piston cylinder assembly 55 to work, compressing the internal gas into the hollow structure of the placement plate 71, and then spraying it out in a direction through the exhaust pipe 763 of the exhaust frame assembly 76. The gas can also thoroughly blow away the other cutting stage mechanism located below. The laser-cut metal debris and impurities on the upper surface are removed, preventing long-term residue from affecting the positioning and cutting accuracy of subsequent raw material plates. On the other hand, gas flow automatically cools the high-temperature upper surface of the cutting platform mechanism after cutting, preventing significant deformation of the platform plate 71 and serrated support strip 74 due to high temperatures. This ensures the structural stability of the platform plate 71 and serrated support strip 74, thereby guaranteeing subsequent cutting accuracy. By switching the positions of the two cutting platform mechanisms, the cleaning and cooling of the platform surface can be automatically achieved, eliminating the need for an additional air pump for purging and cooling, thus reducing equipment costs. Through the cooperation between the serrated support strip 74, T-slot 72, and baffle 77, the saw... The toothed support bar 74 adopts a sawtooth structure design, which greatly reduces the contact area between the raw material plate and the placement table 71. This not only prevents the table from blocking the laser beam during cutting, ensuring the accuracy of laser cutting, but also allows the blowing gas to pass smoothly through the gap, efficiently blowing away the metal impurities generated during cutting. The T-shaped slot 72 and placement groove 73 on the placement table 71 form a convenient disassembly and assembly structure. When the toothed support bar 74 is worn or damaged, simply pull out the baffle 77 in the placement groove 73 upwards to release the restriction on the toothed support bar 74, and then pull out the damaged part along the T-shaped slot 72 for targeted replacement. There is no need to disassemble the entire table, which greatly reduces the difficulty of maintenance and improves the efficiency of equipment maintenance.

[0028] This invention also provides an intelligent laser cutting method for producing range hood housings, employing an intelligent laser cutting device for producing range hood housings. The specific method includes the following steps: Step 1: The servo motor 11 is powered on and starts, driving the drive mechanism 6 to operate as a whole. The drive mechanism 6 drives the second gears 63 on both sides to rotate synchronously through the meshing transmission between the first sprocket 64, the second sprocket 66 and the chain 67. This drives the two first gears 10 meshing with it to make circular motion at the same speed and in the same direction. The first gear 10 revolves clockwise around the second gear 63. The first gear 10 transmits the circular motion to the first cutting platform mechanism 7 and the second cutting platform mechanism 8 through the connecting rod 9. Under the limiting action of the vertical guide groove 52 and the horizontal guide groove 53 of the two symmetrically arranged cross guide rail mechanisms 5, the circular motion is converted into directional reciprocating motion. The first cutting platform mechanism 7 moves up and down along the vertical guide groove 52 between the two cross guide rail mechanisms 5, and the second cutting platform mechanism 8 moves back and forth along the horizontal guide groove 53 between the two cross guide rail mechanisms 5. The two cutting platform mechanisms form an interference-free up and down alternating motion mode until the equipment completes the motion debugging and enters the ready-to-work state. Step 2: When the first cutting platform mechanism 7 moves to the center of the two cross guide rail mechanisms 5, i.e., the laser cutting work position, the servo motor 11 stops working, and the first cutting platform mechanism 7 remains stationary. The operator places the metal raw material plate of the range hood shell to be cut smoothly on the serrated support bar 74 of the first cutting platform mechanism 7 to complete the positioning of the raw material plate. Subsequently, the controller 12 controls the linear module 3 to drive the laser cutting robotic arm 4 to move precisely in the horizontal direction. The laser cutting robotic arm 4 performs non-contact laser cutting on the raw material plate below according to the cutting process parameters of the range hood shell. After completing the material blanking, contour forming or hole processing, the operator removes the cut semi-finished product. The linear module 3, the laser cutting robotic arm 4, and the controller 12 are all prior art known to those skilled in the art. The controller 12 mainly consists of a main control chip, a drive module, a communication module, and a storage unit. It can receive and parse the preset cutting process parameters, and adjust the displacement speed and positioning accuracy of the linear module 3 in real time according to the preset program. At the same time, it adjusts the laser power and light emission sequence of the laser cutting robotic arm 4 to achieve coordinated and precise control. Then, the servo motor 11 is restarted. The first cutting platform mechanism 7 moves downward along the vertical guide groove 52, and the second cutting platform mechanism 8 moves forward along the horizontal guide groove 53. The two movement trajectories do not intersect or interfere with each other. When the second cutting platform mechanism 8 moves forward, its slider 75 triggers the first piston cylinder assembly 54 of the cross guide rail mechanism 5 to work, squeezing the gas inside the first piston cylinder assembly 54 into the hollow slider 75 and exhaust frame assembly 76 of the second cutting platform mechanism 8. The gas is then ejected from the inclined exhaust pipe 763 through the manifold 761 and branch pipe 762, spraying downwards. The surface of the first cutting platform 7, which moves downward, is thoroughly blew away to remove metal chips and impurities generated by laser cutting. At the same time, the airflow is used to cool the high-temperature cutting surface of the first cutting platform 7 to prevent the platform from deforming due to high temperature. When the second cutting platform 8 moves to the foremost limit position, the first cutting platform 7 returns to the center working position of the cross guide mechanism 5, and the servo motor 11 pauses again. The operator can then place a new raw material plate on the first cutting platform 7 and repeat the above laser cutting operation. After completion, the finished product is removed. Step 3: Restart the servo motor 11. The first cutting platform mechanism 7 moves upward along the vertical guide groove 52, and the second cutting platform mechanism 8 moves backward along the horizontal guide groove 53. During the upward movement of the first cutting platform mechanism 7, its slider 75 triggers the second piston cylinder assembly 55 of the cross guide rail mechanism 5 to work. During this process, the opening at the top of the slider 75 and the docking hole of the bent push plate 555 are aligned and overlapped. At the same time, the slider 75 pushes the bent push plate 555 upward, and the piston rod 553 and piston block 552 move upward accordingly. During the upward movement of the piston block 552, the gas inside the hollow cylinder 551 and located above the piston block 552 passes through the interior of the piston block 552, piston rod 553, and bent push plate 555, and finally exits from the docking hole. Gas is squeezed into slider 75, then passes through placement plate 71 into manifold 761 and various branch pipes 762. The gas is then blown downwards through various outlet pipes 763. Because the bottom of the outlet pipe 763 at the front of manifold 761 is tilted forward, and the bottom of the outlet pipe 763 at the rear of manifold 761 is tilted backward, the bottoms of the outlet pipes 763 at the front and rear of manifold 761 are in opposite tilt positions. The gas blown from the outlet pipe 763 at the front of manifold 761 flows obliquely forward, and the gas blown from the outlet pipe 763 at the rear of manifold 761 flows obliquely backward. This purifies and cools the surface of the second cutting placement table mechanism 8, which is moving backward below, removing any impurities that may remain on the table surface. Simultaneously, it prepares the surface for the second cutting placement table machine. The first cutting platform 7 is ready to receive the raw material plate. When the first cutting platform 7 moves to its uppermost limit position, the second cutting platform 8 moves to the center working position of the two cross guide rail mechanisms 5. The servo motor 11 stops working. The operator places the raw material plate to be cut on the second cutting platform 8. The linear module 3 drives the laser cutting robotic arm 4 to move and perform laser cutting on the raw material plate on the second cutting platform 8. After cutting, the shaped part is removed, and the servo motor 11 is restarted. The first cutting platform 7 moves downward along the vertical guide groove 52, and the second cutting platform 8 continues to move backward along the horizontal guide groove 53 until the first cutting platform 7 returns to the cross guide rail mechanism. At the center working position of 5, the second cutting platform mechanism 8 moves to the last limit position, and the servo motor 11 pauses again. The same cycle is then performed so that the first cutting platform mechanism 7 and the second cutting platform mechanism 8 are always alternately in the center working position of laser cutting, carrying the raw material plate to complete the cutting. At the same time, the movement of the cutting platform mechanism in the non-working position triggers gas purging to clean and cool the cutting table surface, ensuring the good use condition of the cutting table surface, thereby improving the cutting accuracy. Since a V-shaped guide plate is fixedly set in the middle of the upper surface of the base 1, and the V-shaped guide plate is in the state of being high in the middle and low at both ends, the metal chips and impurities blown off automatically slide out through the slag discharge port along the V-shaped guide plate.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent laser cutting device for the production of range hood housings, characterized in that, include: A base is placed on the ground. An operating chassis is fixedly installed on the top of the base. A linear module is fixedly installed on the top of the inner cavity of the operating chassis. A laser cutting robotic arm is installed at the bottom of the linear module. A controller is fixedly installed on the left side of the operating chassis. A long slot is opened between the linear module and the top of the operating chassis. The top of the laser cutting robotic arm is connected to the controller via a cable. Transparent protective doors are provided at the front and rear ends of the operating chassis. Two cross guide rail mechanisms are symmetrically arranged on the top left and right sides of the base. A drive mechanism located between the outer sides of the two cross guide rail mechanisms is provided on the top of the base. A servo motor is fixedly installed on the lower left side of the drive mechanism. Both the cross guide rail mechanisms and the drive mechanism are located inside the operating box. The first cutting and placing platform mechanism is used to place the raw material plate of the range hood housing to be cut. The first cutting and placing platform mechanism is set between two cross guide rail mechanisms. The second cutting platform mechanism is used to work alternately with the first cutting platform mechanism in the working position. The second cutting platform mechanism is set between the two cross guide rail mechanisms. Connecting rods are provided between the left and right sides of the first and second cutting platform mechanisms. A first gear is fixedly set in the middle of the side of the two connecting rods that are far apart from each other.

2. The intelligent laser cutting device for producing range hood housings according to claim 1, characterized in that: Both of the aforementioned cross guide rail mechanisms include a cross bracket. The bottom of the cross bracket is fixedly mounted on the top of the base via a frame. A vertical guide groove is provided on the side of the cross bracket away from the first cutting and placing table mechanism, and a horizontal guide groove is provided on the side of the cross bracket away from the first cutting and placing table mechanism. The vertical guide groove and the horizontal guide groove are arranged in a cross-shaped staggered state. A first piston cylinder assembly is provided at the bottom front end of the cross bracket, and a second piston cylinder assembly is provided at the front upper end of the cross bracket. The first piston cylinder assembly is obtained by rotating the second piston cylinder assembly counterclockwise by ninety degrees around the center of the cross bracket.

3. The intelligent laser cutting device for producing range hood housings according to claim 2, characterized in that: The second piston cylinder assembly includes a hollow cylinder, which is fixedly connected to the upper front end of the cross bracket. A piston block is slidably disposed between the inner wall of the hollow cylinder. A piston rod is fixedly disposed at the bottom of the piston block and slides through the bottom of the hollow cylinder. An air outlet valve located inside the hollow cylinder is fixedly disposed at the upper part of the piston rod. A bent push plate is fixedly disposed at the bottom of the piston rod. The upper rear end of the bent push plate is slidably disposed in a vertical guide groove. A spring is sleeved on the outside of the piston rod. The spring is located between the bottom of the hollow cylinder and the lower part of the bent push plate.

4. The intelligent laser cutting device for producing range hood housings according to claim 3, characterized in that: An air inlet pipe is fixedly installed at the upper front end of the hollow cylinder, and an air inlet valve is fixedly installed in the middle of the air inlet pipe. The piston block, piston rod, and bending push plate are all hollow inside. The piston block, piston rod, and bending push plate are connected to each other. An exhaust hole communicating with the inside of the hollow cylinder is opened at the top of the piston block. A docking hole is opened on the lower surface of the upper rear end of the bending push plate.

5. The intelligent laser cutting device for producing range hood housings according to claim 1, characterized in that: The drive mechanism includes two side supports, both of which are fixedly mounted on the top of the base and located on the left and right sides of the two cross guide rail mechanisms, respectively. Protective covers are fixedly mounted on the side of the two side supports that are far apart from each other. A second gear is rotatably mounted on the upper part of the side of the two side supports that are close to each other via a short shaft. The ends of the two short shafts that are far apart from each other are rotatably inserted into the corresponding protective covers and fixedly fitted with a first sprocket. A long shaft is rotatably mounted between the lower parts of the side of the two side supports that are close to each other.

6. The intelligent laser cutting device for producing range hood housings according to claim 5, characterized in that: The two ends of the long shaft respectively rotate through into the corresponding protective cover and are fixedly fitted with second sprockets. Each first sprocket and the exterior of the adjacent second sprocket are meshed with a chain located inside the protective cover. The servo motor is fixedly installed on the left side of the left protective cover. The output shaft of the servo motor rotates through the side wall of the protective cover and is fixedly connected to the left end of the long shaft. Each second gear meshes with the adjacent first gear.

7. The intelligent laser cutting device for producing range hood housings according to claim 2, characterized in that: The first cutting and placing platform mechanism includes a placing platform located between two cross supports. The upper surface of the placing platform has several T-shaped slots evenly spaced from left to right. A placing groove is located at the rear end of the placing platform. A serrated support strip slides through each T-shaped slot. Slider blocks are fixedly installed on both the left and right sides of the placing platform. The sliders are slidably positioned within corresponding vertical guide grooves. The end of the slider away from the placing platform is rotatably connected to one end of an adjacent connecting rod. The slider is hollow inside. Openings are located at the top and on the side closest to the placing platform. The opening at the top of the slider matches a docking hole. An exhaust bracket assembly is fixedly installed at the bottom of the placing platform. A baffle slides through the placing groove.

8. The intelligent laser cutting device for producing range hood housings according to claim 7, characterized in that: The exhaust rack assembly includes a manifold pipe, which is fixedly connected to the bottom center of the placement platform. Several branch pipes are evenly fixedly connected to the front and rear ends of the manifold pipe from left to right. Several air outlet pipes are fixedly connected to the bottom of each branch pipe. The bottom of the air outlet pipe at the front of the manifold pipe is inclined forward, and the bottom of the air outlet pipe at the rear of the manifold pipe is inclined backward. The manifold pipe, the placement platform, and the slider are in a connected state.

9. The intelligent laser cutting device for producing range hood housings according to claim 7, characterized in that: The second cutting platform mechanism has the same structure as the first cutting platform mechanism. The second cutting platform mechanism is slidably disposed between two horizontal guide grooves, and the slider in the second cutting platform mechanism is rotatably connected to the other end of the adjacent connecting rod.

10. A smart laser cutting method for producing range hood housings, characterized in that: The method using the intelligent laser cutting device for producing range hood housings as described in any one of claims 1-9 includes the following steps: Step 1: The servo motor drives the drive mechanism to rotate. The drive mechanism drives the two first gears to rotate at the same speed and in the same direction, so that the first gears make circular motion. With the cooperation of the connecting rod, the first gears transmit the motion to the first cutting and placing stage mechanism and the second cutting and placing stage mechanism. At the same time, under the limiting action of the cross guide rail mechanism, the first cutting and placing stage mechanism and the second cutting and placing stage mechanism make up-down reciprocating motion. During the process, the first cutting and placing stage mechanism moves up and down along the two cross guide rail mechanisms, and the second cutting and placing stage mechanism moves back and forth along the two cross guide rail mechanisms. Step Two: When the first cutting platform mechanism is at the center of the two cross guide rail mechanisms, the servo motor stops working, and the position of the first cutting platform mechanism remains stationary. The raw material plate of the range hood housing to be cut is placed on top of the first cutting platform mechanism. The linear module drives the laser cutting robotic arm to move, and the laser cutting robotic arm performs laser cutting on the raw material plate below. After cutting, the raw material plate is removed, and the servo motor is restarted. At this time, the first cutting platform mechanism moves downward, and the second cutting platform mechanism moves forward. During this process, the movements of the first and second cutting platform mechanisms will not interfere with each other. As the mechanism moves forward, it triggers the cross guide mechanism to work, causing the cross guide mechanism to squeeze the internal gas into the second cutting and placing stage mechanism. The second cutting and placing stage mechanism then blows the surface of the first cutting and placing stage mechanism below, removing metal impurities generated during cutting and cooling the surface of the first cutting and placing stage mechanism. When the second cutting and placing stage mechanism is at the foremost position, the first cutting and placing stage mechanism is once again at the center of the two cross guide mechanisms. The servo motor stops working again, and the raw material plate is placed on top of the first cutting and placing stage mechanism. The laser cutting robot arm then performs laser cutting on the plate, and the plate is removed after cutting. Step 3: Restart the servo motor. The first cutting platform moves upward, and the second cutting platform moves backward. During the upward movement of the first cutting platform, the cross guide mechanism is triggered, causing it to force internal gas into the first cutting platform. This allows the first cutting platform to purge and cool the surface of the second cutting platform below. When the first cutting platform is at its highest point, the second cutting platform is at the center of the two cross guide mechanisms. The servo motor pauses again, and the raw material plate is placed on top of the second cutting platform. The laser cutting robotic arm then performs laser cutting on it. After cutting, the plate is removed, and the servo motor is restarted. The first cutting platform moves downward, and the second cutting platform moves backward. The first cutting platform is once again at the center of the two cross guide mechanisms, and the second cutting platform is at its rearmost position. The servo motor pauses again, and the cutting operation is repeated. This process allows the second and first cutting platforms to work alternately, each in a different position to support the raw material plate.

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