Plate laser cutting platform and laser cutting process

Abstract

The invention relates to the technical field of laser cutting equipment, and provides a plate laser cutting platform and a laser cutting technology.The laser cutting platform comprises a workbench, a grating table, a cross beam, a longitudinal translation assembly, a transverse translation assembly, a laser cutting machine body, a follow-up assembly and a protection assembly. The cross beam is installed on the workbench through the longitudinal translation assembly, the laser cutting machine body is installed on the transverse translation assembly through the follow-up assembly, and the transverse translation assembly is arranged on the top of the cross beam. The follow-up assembly is used for driving the laser cutting machine body to float up and down so as to adapt to plate surface fluctuation. The protection assembly is arranged at the bottom of the laser cutting machine body and used for spraying protection gas and collecting cutting waste gas. Through cooperation of the longitudinal translation assembly and the transverse translation assembly, multi-dimensional movement of the laser cutting machine body is achieved. The height adjusting structure is simplified through the follow-up assembly, and the cutting stability is improved; and the safety and the environmental protection performance are effectively improved through the arrangement of the protection assembly.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of laser cutting equipment, and in particular, to a plate laser cutting platform and a laser cutting process. Background Art

[0002] In modern manufacturing, sheet metal laser cutting equipment is widely used for high-precision processing of sheet metal, offering advantages such as fine kerfs, a minimal heat-affected zone, and high cutting efficiency. Conventional laser cutting platforms primarily consist of a worktable, the laser cutting machine itself, a motion control system, and exhaust and safety components. The laser cutting machine itself must move along the sheet metal surface in multiple dimensions during the cutting process to accommodate varying sheet sizes and topography.

[0003] Existing technologies typically rely on complex numerical control systems or visual tracking systems to control the laser head, enabling it to adjust its height in real time based on the plate's fluctuations to maintain the optimal focus. However, these automatic control systems are often complex, difficult to debug, and expensive to maintain. Failures in the control algorithm or actuators can cause the laser head's height adjustment to fail, reducing cutting accuracy or even rendering the plate useless. Furthermore, during long-term operation, the large amounts of smoke and harmful gases generated by laser cutting can severely impact the working environment and pose a health risk to operators if not promptly and effectively exhausted. Summary of the Invention

[0004] To overcome these shortcomings, the present invention provides a sheet metal laser cutting platform and laser cutting process. These solutions address the technical issues inherent in existing sheet metal laser cutting platforms, which typically rely on complex numerical control systems or visual tracking systems to control the laser head. These automated control systems are often complex, difficult to debug, and expensive to maintain. Failures in the control algorithm or actuators can lead to malfunction of the laser head's height adjustment, resulting in reduced cutting accuracy or even the scrapping of the sheet metal.

[0005] According to one aspect, at least one embodiment of the present invention provides a plate laser cutting platform, comprising a workbench, a grid platform being mounted on the top wall of the workbench, and further comprising: A crossbeam, wherein both sides of the bottom wall of the crossbeam are equipped with longitudinal translation components, the crossbeam is installed on the top wall of the workbench through the longitudinal translation components, and the top wall of the crossbeam is equipped with a transverse translation component; A laser cutting machine body, wherein the laser cutting machine body is mounted on the transverse translation assembly via a follower assembly, wherein the follower assembly is used to control the laser cutting machine body to move up and down along with the fluctuation of the plate; A protection component is installed at the bottom of the laser cutting machine body. The protection component is used to spray protective gas during the cutting process of the laser cutting machine body and collect and discharge the exhaust gas generated during the cutting process.

[0006] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the longitudinal translation assembly includes a base, a servo motor No. 1 is fixed to the middle of the top wall of the base, a shell is fixed to the outer side of the top wall of the base, and the shell is fixed to the bottom wall of the beam, and the power shaft at the bottom of the No. 1 servo motor passes through the base through a bearing and is fixed with a No. 1 gear, and the No. 1 gear is meshed and connected with a No. 1 rack, and the No. 1 rack is fixed on the top wall of the workbench, and a No. 1 guide rail is installed on one side of the No. 1 rack, and the No. 1 guide rail is fixed on the top wall of the workbench, and a matching No. 1 slider is slidably installed on the No. 1 guide rail, and the No. 1 slider is fixed to the bottom wall of the base.

[0007] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the lateral translation assembly includes a mounting shell, a No. 2 servo motor is fixed to the bottom wall of the inner cavity of the mounting shell, a power shaft at the bottom of the No. 2 servo motor passes through the bottom wall of the mounting shell through a bearing and is fixed with a No. 2 gear, the No. 2 gear is meshed with a No. 2 rack, the No. 2 rack is fixed on the top wall of the beam, No. 2 guide rails are installed on both sides of the No. 2 rack, the No. 2 guide rails are fixed on the top wall of the beam, a matching No. 2 slider is slidably installed on the No. 2 guide rail, and the No. 2 slider is fixed on the bottom wall of the mounting shell.

[0008] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the follower assembly includes an electric push rod, the electric push rod is fixed in the mounting shell, the movable end at the bottom of the electric push rod slides through the bottom wall of the mounting shell and is fixed with a cross plate, one end of the cross plate is fixed with a mounting seat, a slide groove is opened on one side of the mounting seat, a sliding shaft is fixed in the slide groove, a movable block is slidably installed on the slide shaft, the movable block is slidably installed in the slide groove, a spring is fixed between the top wall of the movable block and the top wall of the slide groove, the spring is sleeved on the outside of the slide shaft, the side wall of the movable block is fixed with a mounting block, the laser cutting machine body is fixed on the side wall of the mounting block, the bottom wall of the mounting block is fixed with an adjusting rod, and the bottom end of the adjusting rod is fixed with a moving mechanism.

[0009] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the adjusting rod includes a sleeve, a rectangular groove is opened inside the sleeve, a threaded sleeve is rotatably installed at the bottom end of the sleeve, a rectangular limit block is slidably installed in the rectangular groove, a threaded rod is fixed at the bottom end of the rectangular limit block, and the threaded rod is threadedly connected to the threaded sleeve.

[0010] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the moving mechanism includes a mounting ring, a connecting plate is fixed on one side of the mounting ring, the connecting plate is fixed to the bottom end of the threaded rod, a plurality of inclined rods are symmetrically fixed on the bottom wall of the mounting ring, a ball is rotatably installed on the bottom end of the inclined rod, and a plurality of rollers are rotatably installed on the middle part of the inclined rod.

[0011] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the protective component includes an air collecting hood with a hollow wall, the air collecting hood is sleeved on the outside of the laser head of the laser cutting machine body, an air guide ring tube is fixed inside the air collecting hood, a linkage mechanism is fixed on the outside of the air collecting hood, a plurality of nozzles are symmetrically fixed to the bottom end of the air guide ring tube, and a plurality of air inlet holes are symmetrically opened at the bottom of the inner wall of the air collecting hood.

[0012] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the linkage mechanism includes a shell, a vertical tube is fixed to the bottom wall of the shell, a rotating shaft is rotatably installed in the center of the top wall of the vertical tube, the top end of the rotating shaft passes through the bottom wall of the shell through a leakage-proof bearing and is fixed with a plurality of blades, an exhaust fan blade is fixed to the bottom end of the rotating shaft, one side of the shell is connected to the air guide ring tube through an air inlet duct, and the bottom end of the vertical tube is connected to the inside of the air collecting hood wall through an air outlet duct.

[0013] For example, at least one embodiment of the present invention provides a plate laser cutting platform, wherein the side of the shell away from the air inlet duct is fixedly connected to an air inlet pipe, the air inlet pipe corresponds to the position of the blade, the air inlet pipe is connected to an external high-pressure protective gas tank, and one side of the vertical pipe is fixedly connected to an air outlet pipe, and the other end of the air outlet pipe is connected to an external gas purification device.

[0014] According to another aspect, at least one embodiment of the present invention further provides a plate laser cutting process, comprising the following steps: Step 1: Fix the plate to be cut on the grid table on the top of the workbench, and control the longitudinal translation component and the transverse translation component through the preset program to drive the laser cutting machine body to move; Step 2: Use the longitudinal translation assembly and the transverse translation assembly to drive the laser cutting machine body to move to the initial cutting position, and then control the electric push rod on the follower assembly to extend, so that the moving mechanism contacts the top wall of the plate until the spring is compressed to a certain extent, and its compressed length is greater than the height difference between the moving mechanism and the lowest point of the plate at this time, ensuring that the moving mechanism can also contact the top wall of the plate when it moves to the lowest point of the plate, and then perform the focusing operation on the laser cutting machine body; Step 3: Turn on the switch of the external high-pressure shielding gas tank, and at the same time drive the laser cutting machine body to move along the predetermined route through the longitudinal translation assembly and the transverse translation assembly. The laser cutting machine body uses the shielding gas ejected from the nozzle during the plate cutting process to protect the cutting position. At the same time, the exhaust fan blades in the linkage mechanism during the jetting process can draw the exhaust gas generated during the cutting process into the gas collection hood, and finally transmit it to the external gas purification equipment through the vertical pipe and the outlet pipe for purification operation.

[0015] The beneficial effects of the embodiments of the present invention are: (1) In the present invention, the follower assembly uses an electric push rod and a spring loading structure to enable the laser cutting machine body to automatically float up and down with the fluctuation of the plate surface height, ensuring that the laser head always maintains a suitable working distance, avoiding the focus offset problem caused by the unevenness of the plate, and eliminating the need for complex sensors and visual control systems. The operation process is simplified and the cutting quality is improved. The set adjustment rod structure can realize fine-tuning of the distance between the laser head and the plate, meeting the processing requirements of plates of different thicknesses or materials, and improving the versatility and flexibility of the equipment.

[0016] (2) In the present invention, by setting up a protective component, protective gas is sprayed synchronously during the laser cutting process, which effectively suppresses slag splashing and stabilizes the cutting environment; at the same time, the waste gas generated by cutting is collected and transported to the purification device with the help of a pneumatic linkage mechanism, thereby improving the working environment and meeting environmental protection requirements. The entire platform adopts a modular structure, and the functions of each component are clear and the installation method is simple, which facilitates subsequent maintenance and replacement, and reduces operation and maintenance costs; the platform can adapt to different specifications and types of plates and has good versatility and scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0018] Figure 1 This is a three-dimensional diagram of the external structure of the present invention; Figure 2 This is a three-dimensional diagram of the longitudinal translation assembly structure of the present invention; Figure 3 This is a three-dimensional diagram of the structure of the lateral translation assembly of the present invention; Figure 4 This is a three-dimensional diagram of the bottom structure of the lateral translation assembly of the present invention; Figure 5 This is a three-dimensional diagram of the follower assembly structure of the present invention; Figure 6This is a three-dimensional diagram of the mobile mechanism structure of the present invention; Figure 7 This is a three-dimensional diagram of a half-section structure of the adjusting rod of the present invention; Figure 8 This is a three-dimensional diagram of the top structure of the protection assembly of the present invention; Figure 9 This is a three-dimensional diagram of the bottom structure of the protection component of the present invention Figure 10 It is a half-section stereoscopic view of the linkage structure of the present invention.

[0019] In the figure: 1. Workbench; 2. Grid table; 3. Crossbeam; 4. Longitudinal translation assembly; 41. Base; 42. Servo motor No. 1; 43. Housing; 44. Gear No. 1; 45. Rack No. 1; 46. Guide rail No. 1; 47. Slider No. 1; 5. Lateral translation assembly; 51. Mounting housing; 52. Servo motor No. 2; 53. Gear No. 2; 54. Rack No. 2; 55. Guide rail No. 2; 56. Slider No. 2; 6. Follow-up assembly; 61. Electric push rod; 62. Cross plate; 63. Mounting seat; 64. Mounting block; 65. Adjustment rod; 651. Sleeve; 652. Threaded sleeve; 653. Threaded rod; 65 4. Rectangular limit block; 66. Moving mechanism; 661. Mounting ring; 662. Connecting plate; 663. Inclined rod; 664. Roller; 665. Ball; 67. Slide shaft; 68. Movable block; 69. Spring; 7. Laser cutting machine body; 8. Protective assembly; 81. Gas hood; 82. Air guide ring tube; 83. Linkage mechanism; 831. Shell; 832. Vertical pipe; 833. Rotating shaft; 834. Blade; 835. Exhaust fan blade; 836. Inlet pipe; 837. Outlet pipe; 84. Inlet duct; 85. Outlet duct; 86. Injector head; 87. Inlet hole; 9. Slide groove; 10. Rectangular groove. DETAILED DESCRIPTION The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0020] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0021] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0022] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0023] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] like Figure 1 , which shows a plate laser cutting platform in one embodiment of the present invention, including a workbench 1, a grid platform 2 is installed on the top wall of the workbench 1, and further comprising: The crossbeam 3, both sides of the bottom wall of the crossbeam 3 are equipped with longitudinal translation components 4, the crossbeam 3 is installed on the top wall of the workbench 1 through the longitudinal translation components 4, and the top wall of the crossbeam 3 is equipped with a transverse translation component 5; The laser cutting machine body 7 is mounted on the lateral translation assembly 5 via a follower assembly 6. The follower assembly 6 is used to control the laser cutting machine body 7 to move up and down along with the fluctuation of the plate; The protection component 8 is installed at the bottom of the laser cutting machine body 7. The protection component 8 is used to spray protective gas during the cutting process of the laser cutting machine body 7 and collect and discharge the exhaust gas generated during the cutting process.

[0026] In this embodiment, the longitudinal translation component 4 and the transverse translation component 5 are provided to drive the laser cutting machine body 7 to move forward, backward, left and right to realize the cutting operation of the plate. The follower component 6 is provided to drive the laser cutting machine body 7 to move up and down with the ups and downs of the plate. There is no need to set up a complex automatic control system to ensure the cutting operation of the laser cutting machine body 7 on the plate. The operation is simple and convenient, which effectively reduces the production cost and avoids the accidental failure of the automatic control system causing the cutting effect to deteriorate. The protective component 8 provided can spray protective gas during the cutting process and collect and discharge the exhaust gas generated during the cutting process.

[0027] like Figure 2 As shown, it shows a longitudinal translation component 4 in another embodiment of the present invention, the longitudinal translation component 4 includes a base 41, a servo motor 42 is fixed in the middle of the top wall of the base 41, a shell 43 is fixed on the outer side of the top wall of the base 41, the shell 43 is fixed on the bottom wall of the beam 3, the power shaft at the bottom of the servo motor 42 passes through the base 41 through a bearing and is fixed with a gear 44, the gear 44 is meshed and connected with a rack 45, the rack 45 is fixed on the top wall of the workbench 1, a guide rail 46 is installed on one side of the rack 45, the guide rail 46 is fixed on the top wall of the workbench 1, a matching slider 47 is slidably installed on the guide rail 46, and the slider 47 is fixed on the bottom wall of the base 41. In this embodiment, the longitudinal translation assembly 4 is used to drive the laser cutting machine body 7 to move forward and backward. When the longitudinal translation assembly 4 is in operation, the first servo motor 42 drives the first gear 44 to rotate. The first gear 44 cooperates with the first rack 45 to drive the base 41 to move forward and backward along the first guide rail 46, thereby driving the laser cutting machine body 7 on the crossbeam 3 to move forward and backward.

[0028] like Figure 3~Figure 4 As shown, it shows a lateral translation assembly 5 in another embodiment of the present invention, the lateral translation assembly 5 includes a mounting shell 51, a No. 2 servo motor 52 is fixed to the bottom wall of the inner cavity of the mounting shell 51, a power shaft at the bottom of the No. 2 servo motor 52 passes through the bottom wall of the mounting shell 51 through a bearing and is fixed with a No. 2 gear 53, the No. 2 gear 53 is meshed with a No. 2 rack 54, the No. 2 rack 54 is fixed on the top wall of the beam 3, and No. 2 guide rails 55 are installed on both sides of the No. 2 rack 54, the No. 2 guide rails 55 are fixed on the top wall of the beam 3, and a matching No. 2 slider 56 is slidably installed on the No. 2 guide rail 55, and the No. 2 slider 56 is fixed to the bottom wall of the mounting shell 51.

[0029] In this embodiment, the transverse translation assembly 5 is used to drive the laser cutting machine body 7 to move left and right. When the transverse translation assembly 5 is in operation, the second servo motor 52 drives the second gear 53 to rotate. The second gear 53 cooperates with the second rack 54 to drive the mounting housing 511 to move left and right along the second guide rail 55, thereby driving the laser cutting machine body 7 on the mounting housing 511 to move left and right.

[0030] like Figures 4 to 7 As shown, it shows a follower assembly 6 in another embodiment of the present invention. The follower assembly 6 includes an electric push rod 61, which is fixed in the mounting shell 51. The movable end of the bottom of the electric push rod 61 slides through the bottom wall of the mounting shell 51 and is fixed with a cross plate 62. A mounting seat 63 is fixed at one end of the cross plate 62. A slide groove 9 is provided on one side of the mounting seat 63. A slide shaft 67 is fixed in the slide groove 9. A movable block 68 is slidably installed on the slide shaft 67. The movable block 68 is slidably installed in the slide groove 9. A spring 69 is fixed between the top wall of the movable block 68 and the top wall of the slide groove 9. The spring 69 is sleeved on the outside of the slide shaft 67. The side wall of the movable block 68 is fixed with a mounting block 64. The laser cutting machine body 7 is fixed on the side wall of the mounting block 64. The bottom wall of the mounting block 64 is fixed with an adjusting rod 65, and the bottom end of the adjusting rod 65 is fixed with a moving mechanism 66.

[0031] The adjusting rod 65 includes a sleeve 651, a rectangular groove 10 is opened inside the sleeve 651, a threaded sleeve 652 is rotatably installed at the bottom end of the sleeve 651, a rectangular limit block 654 is slidably installed in the rectangular groove 10, a threaded rod 653 is fixed to the bottom end of the rectangular limit block 654, and the threaded rod 653 is screwed to the threaded sleeve 652.

[0032] The moving mechanism 66 includes a mounting ring 661, a connecting plate 662 is fixed to one side of the mounting ring 661, the connecting plate 662 is fixed to the bottom end of the threaded rod 653, and a plurality of inclined rods 663 are symmetrically fixed to the bottom wall of the mounting ring 661. A ball 665 is rotatably installed at the bottom end of the inclined rod 663, and a plurality of rollers 664 are rotatably installed in the middle of the inclined rod 663.

[0033] In this embodiment, the follower assembly 6 can drive the laser cutting machine body 7 to move up and down with the fluctuation of the plate. There is no need to set up a complex automatic control system to ensure that the laser cutting machine body 7 can cut the plate. The operation is simple and convenient. First, the electric push rod 61 on the follower assembly 6 is controlled to extend, so that the moving mechanism 66 contacts the top wall of the plate until the spring 69 is compressed to a certain extent, and its compressed length is greater than the height difference between the moving mechanism 66 and the lowest point of the plate at this time, ensuring that the moving mechanism 66 can also contact the top wall of the plate when it moves to the lowest point of the plate, and then the focusing operation of the laser cutting machine body 7 is performed. During the cutting process of the laser cutting machine body 7, the moving mechanism 66 abuts against the top wall of the plate. When the laser cutting machine body 7 moves, the moving mechanism 66 moves along the top wall of the plate. When the top wall of the plate fluctuates, the moving mechanism 66 drives the movable block 68 to move up and down along the slide groove 9 through the provided adjusting rod 65 and the mounting block 64. At the same time, the spring 69 can ensure that the moving mechanism 66 is always in contact with the top wall of the plate. The ball 665 and the roller 664 provided on the moving mechanism 66 can facilitate the movement of the moving mechanism 66 on the surface of the plate. The adjusting rod 65 provided can adjust the distance between the laser cutting machine body 7 and the plate according to actual needs. When the adjusting rod 65 is adjusted, the threaded sleeve 652 is rotated, and the threaded sleeve 652 drives the threaded rod 653 to move up and down, thereby adjusting the position of the moving mechanism 66 to adjust the distance between the laser cutting machine body 7 and the plate.

[0034] like Figures 8 to 10 As shown, it shows a protection component 8 in another embodiment of the present invention. The protection component 8 includes an air collecting hood 81 with a hollow wall. The air collecting hood 81 is sleeved on the outside of the laser head of the laser cutting machine body 7. An air guide ring tube 82 is fixed in the air collecting hood 81, and a linkage mechanism 83 is fixed on the outside of the air collecting hood 81. A number of nozzles 86 are symmetrically fixed to the bottom end of the air guide ring tube 82, and a number of air inlet holes 87 are symmetrically opened at the bottom of the inner wall of the air collecting hood 81.

[0035] The linkage mechanism 83 includes a shell 831, a vertical pipe 832 is fixed to the bottom wall of the shell 831, a rotating shaft 833 is rotatably installed in the center of the top wall of the vertical pipe 832, the top of the rotating shaft 833 passes through the bottom wall of the shell 831 through a leakage-proof bearing and is fixed with a number of blades 834, and the bottom end of the rotating shaft 833 is fixed with an exhaust fan blade 835. One side of the shell 831 is connected to the air guide ring pipe 82 through the air inlet duct 84, and the bottom end of the vertical pipe 832 is connected to the inside of the wall of the air collecting hood 81 through the air outlet duct 85.

[0036] An air inlet pipe 836 is fixedly connected to one side of the shell 831 away from the air inlet duct 84. The air inlet pipe 836 corresponds to the position of the blade 834. The air inlet pipe 836 is connected to an external high-pressure protective gas tank. An air outlet pipe 837 is fixedly connected to one side of the vertical pipe 832. The other end of the air outlet pipe 837 is connected to an external gas purification device.

[0037] In this embodiment, the protective assembly 8 is configured to eject protective gas during the cutting process and collect and discharge the waste gas generated during the cutting process. During the cutting process, the high-pressure gas in the external high-pressure protective gas tank quickly enters the housing 831, then enters the air guide ring tube 82 through the air inlet duct 84, and finally is ejected through the nozzle 86 to protect the cutting position. At the same time, the high-pressure gas can impact the blades 834 during the rapid flow, thereby driving the rotating shaft 833 to rotate rapidly. During the rotation of the rotating shaft 833, the exhaust fan blades 835 are driven to rotate, and the waste gas generated during the cutting process is drawn into the wall of the gas collecting hood 81, and then enters the vertical pipe 832 through the air outlet duct 85, and finally is introduced into the external gas purification equipment through the air outlet pipe 837 for purification.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A plate laser cutting platform, comprising a workbench (1), wherein a grid platform (2) is mounted on the top wall of the workbench (1), characterized in that: Also includes: A crossbeam (3), wherein longitudinal translation components (4) are installed on both sides of the bottom wall of the crossbeam (3), the crossbeam (3) is installed on the top wall of the workbench (1) through the longitudinal translation components (4), and the top wall of the crossbeam (3) is installed with a transverse translation component (5); A laser cutting machine body (7), the laser cutting machine body (7) being mounted on the transverse translation assembly (5) via a follower assembly (6), the follower assembly (6) being used to control the laser cutting machine body (7) to move up and down along with the fluctuation of the plate; A protection component (8) is installed at the bottom of the laser cutting machine body (7), and is used to spray protective gas during the cutting process of the laser cutting machine body (7) and to collect and discharge waste gas generated during the cutting process.

2. A plate laser cutting platform according to claim 1, characterized in that: The longitudinal translation assembly (4) includes a base (41), a servo motor (42) is fixed in the middle of the top wall of the base (41), a shell (43) is fixed on the outer side of the top wall of the base (41), and the shell (43) is fixed on the bottom wall of the beam (3). The power shaft at the bottom of the servo motor (42) passes through the base (41) through a bearing and is fixed with a gear (44), the gear (44) is meshed and connected with a rack (45), the rack (45) is fixed on the top wall of the workbench (1), a guide rail (46) is installed on one side of the rack (45), the guide rail (46) is fixed on the top wall of the workbench (1), a matching slider (47) is slidably installed on the guide rail (46), and the slider (47) is fixed on the bottom wall of the base (41).

3. The plate laser cutting platform according to claim 1, characterized in that: The lateral translation assembly (5) includes a mounting shell (51), a No. 2 servo motor (52) is fixed to the bottom wall of the inner cavity of the mounting shell (51), a power shaft at the bottom of the No. 2 servo motor (52) passes through the bottom wall of the mounting shell (51) through a bearing and is fixed with a No. 2 gear (53), the No. 2 gear (53) is meshed with a No. 2 rack (54), the No. 2 rack (54) is fixed on the top wall of the beam (3), and No. 2 guide rails (55) are installed on both sides of the No. 2 rack (54), the No. 2 guide rails (55) are fixed on the top wall of the beam (3), and a matching No. 2 slider (56) is slidably installed on the No. 2 guide rail (55), and the No. 2 slider (56) is fixed on the bottom wall of the mounting shell (51).

4. A plate laser cutting platform according to claim 3, characterized in that: The follower assembly (6) includes an electric push rod (61), the electric push rod (61) is fixed in the mounting shell (51), the movable end at the bottom of the electric push rod (61) slides through the bottom wall of the mounting shell (51) and is fixed with a transverse plate (62), one end of the transverse plate (62) is fixed with a mounting seat (63), a sliding groove (9) is provided on one side of the mounting seat (63), a sliding shaft (67) is fixed in the sliding groove (9), a movable block (68) is slidably mounted on the sliding shaft (67), and the movable block (68) is slidably mounted in the slide groove (9), a spring (69) is fixed between the top wall of the movable block (68) and the top wall of the slide groove (9), the spring (69) is sleeved on the outside of the sliding shaft (67), a mounting block (64) is fixed to the side wall of the movable block (68), the laser cutting machine body (7) is fixed on the side wall of the mounting block (64), an adjusting rod (65) is fixed to the bottom wall of the mounting block (64), and a moving mechanism (66) is fixed to the bottom end of the adjusting rod (65).

5. The plate laser cutting platform according to claim 4, characterized in that: The adjusting rod (65) comprises a sleeve (651), a rectangular groove (10) is provided inside the sleeve (651), a threaded sleeve (652) is rotatably mounted on the bottom end of the sleeve (651), a rectangular stop block (654) is slidably mounted in the rectangular groove (10), a threaded rod (653) is fixed to the bottom end of the rectangular stop block (654), and the threaded rod (653) is screwed to the threaded sleeve (652).

6. The plate laser cutting platform according to claim 5, characterized in that: The moving mechanism (66) comprises a mounting ring (661), a connecting plate (662) being fixed to one side of the mounting ring (661), the connecting plate (662) being fixed to the bottom end of the threaded rod (653), a plurality of inclined rods (663) being symmetrically fixed to the bottom wall of the mounting ring (661), a ball bearing (665) being rotatably mounted on the bottom end of the inclined rod (663), and a plurality of rollers (664) being rotatably mounted on the middle portion of the inclined rod (663).

7. The plate laser cutting platform according to claim 1, characterized in that: The protection component (8) includes an air collecting hood (81) with a hollow wall, the air collecting hood (81) is sleeved on the outside of the laser head of the laser cutting machine body (7), an air guide ring tube (82) is fixed in the air collecting hood (81), a linkage mechanism (83) is fixed on the outside of the air collecting hood (81), a plurality of air injection heads (86) are symmetrically fixed at the bottom end of the air guide ring tube (82), and a plurality of air inlet holes (87) are symmetrically opened at the bottom of the inner wall of the air collecting hood (81).

8. The plate laser cutting platform according to claim 7, characterized in that: The linkage mechanism (83) comprises a housing (831), a vertical tube (832) being fixed to the bottom wall of the housing (831), a rotating shaft (833) being rotatably mounted in the center of the top wall of the vertical tube (832), the top end of the rotating shaft (833) penetrating the bottom wall of the housing (831) via a leak-proof bearing and being fixed with a plurality of blades (834), an exhaust fan blade (835) being fixed to the bottom end of the rotating shaft (833), one side of the housing (831) being connected to the air guide ring tube (82) via an air inlet duct (84), and the bottom end of the vertical tube (832) being connected to the interior of the wall of the air collecting hood (81) via an air outlet duct (85).

9. The plate laser cutting platform according to claim 8, characterized in that: An air inlet pipe (836) is fixedly connected to one side of the housing (831) away from the air inlet duct (84), the air inlet pipe (836) corresponds to the position of the blade (834), and the air inlet pipe (836) is connected to an external high-pressure protective gas tank. An air outlet pipe (837) is fixedly connected to one side of the vertical pipe (832), and the other end of the air outlet pipe (837) is connected to an external gas purification device.

10. A sheet metal laser cutting process, using a sheet metal laser cutting platform as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Fix the plate to be cut on the grid table (2) on top of the workbench (1), and control the longitudinal translation component (4) and the transverse translation component (5) through a preset program to drive the laser cutting machine body (7) to move; Step 2: The laser cutting machine body (7) is driven to move to the initial cutting position by the longitudinal translation component (4) and the transverse translation component (5), and then the electric push rod (61) on the follower component (6) is controlled to extend so that the moving mechanism (66) contacts the top wall of the plate until the spring (69) is compressed to a certain extent, and its compressed length is greater than the height difference between the moving mechanism (66) and the lowest point of the plate at this time, ensuring that the moving mechanism (66) can also contact the top wall of the plate when it moves to the lowest point of the plate, and then the laser cutting machine body (7) is focused; Step 3: Turn on the switch of the external high-pressure protective gas tank, and at the same time drive the laser cutting machine body (7) to move along the predetermined route through the longitudinal translation component (4) and the transverse translation component (5). The laser cutting machine body (7) protects the cutting position with the protective gas ejected by the nozzle (86) during the plate cutting process. At the same time, the exhaust fan blade (835) in the linkage mechanism (83) during the jetting process can extract the waste gas generated by the cutting into the gas collecting hood (81), and finally transmit it to the external gas purification equipment through the vertical pipe (832) and the outlet pipe (837) for purification operation.

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