A large-format plane cutting machine with a multi-section hollow bed structure

Abstract

The present invention relates to a large-format plane cutting machine with a multi-section spliced hollow bed structure, comprising two hollow bed structures, which are spliced and connected by a fixing device, a movable laser cutting device is provided on the top of the two hollow bed structures, a cutting workbench is provided on the two hollow bed structures, a plurality of supporting blade seats are installed on the cutting workbench, a plurality of supporting blade seats are installed on the supporting blade seats, a plurality of fireproof brick carts are provided at the bottom of the cutting workbench, a plurality of floating drag chain supporting devices are installed on one side of the hollow bed structure, a telescopic hard limit device is provided on both sides of the two hollow bed structures at one side of the splicing of the two hollow bed structures, and an intelligent safety grating is provided on the movable laser cutting device; the problem that the traditional ground rail type laser cutting machine has a bulky bed structure, low dust removal selectivity, poor safety and cannot be supported by the drag chain is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting machines, and in particular to a large-scale plane cutting machine with a multi-section spliced hollow bed structure. Background Art

[0002] Laser cutting is an advanced processing technology that uses a high-power density laser beam to illuminate the surface of a material to achieve the desired cutting effect. This technology boasts advantages such as high precision, high speed, small kerf, minimal heat-affected zone, and a high degree of automation. Therefore, it is widely used in modern manufacturing, particularly in the metalworking industry. However, since cutting large-format workpieces places higher demands on the equipment's accuracy, stability, mobility, and safety, existing technologies still face several challenges that need to be addressed, particularly in terms of bed structure, cutting accuracy, and dust removal safety. Currently, traditional large-format laser cutting machines mostly use a floor-track structure. While this structure can meet the cutting requirements of large workpieces to a certain extent, the stability and accuracy of their bed structure often struggle to meet higher requirements. Furthermore, because floor-track cutting machines often use a single, relatively bulky bed structure, their installation and commissioning process is complex and requires a high level of space. During the laser cutting process, smoke and splashing not only affect the cutting effect but can also damage the equipment and even endanger the operator's safety. Traditional cutting machines usually only have a single fixed point for external dust collection systems, which are less flexible and practical. In addition, splashes may interfere with the safety grating signals of the laser cutting machine, leading to misoperation or safety hazards, and increasing the operational risks for workers. In large-format cutting machines, the drag chain needs to support the cables and pipes of important components such as the laser cutting head. As the cutting machine moves constantly, the stability and support performance of the drag chain are crucial. Most existing drag chain support devices lack flexibility, especially in spliced bed types. Drag chains with long travels require additional support devices to avoid swinging and friction problems of the drag chain, to ensure the smooth operation of the drag chain and the efficient operation of the equipment. Summary of the Invention

[0003] In response to the defects in the above-mentioned prior art, the present invention provides a large-format plane cutting machine with a multi-section spliced hollow bed structure, which solves the problems of bulky bed structure, low dust removal selectivity, poor safety and inability to support drag chains of traditional ground-rail laser cutting machines.

[0004] The objective of the present invention is achieved through the following technical solutions: a large-format plane cutting machine with a multi-section spliced hollow bed structure, comprising two hollow beds, the two hollow beds being spliced and connected by a fixing device, the tops of the two hollow beds being provided with a mobile laser cutting device, the two hollow beds being provided with a cutting workbench, a plurality of supporting blade seats being installed on the cutting workbench, a plurality of supporting blade seats being installed on the supporting blade seats, a plurality of fireproof brick trolleys being provided at the bottom of the cutting workbench, a plurality of floating drag chain support devices being installed on one side of the hollow bed, a telescopic hard limit device being provided on both sides of the two hollow beds located at the side where the two hollow beds are spliced, and an intelligent safety grating being provided on the mobile laser cutting device.

[0005] Furthermore, the hollow bed includes two hollow beams, and connecting hollow beams are connected on both sides between the two hollow beams. Several supporting hollow beams and reinforcing beams are evenly cross-connected between the two hollow beams. One of the connecting hollow beams is provided with a front exhaust port on one side, and the hollow beam is provided with a side exhaust port on one side. The supporting hollow beam is connected with the hollow beam, and a linear guide mounting gasket and a rack mounting gasket are installed on the top of the hollow beam. Several follow-up damper assemblies are provided on one side of the hollow beam.

[0006] Furthermore, the fixing device includes an extension plate, and one end of the hollow beam is connected to two of the extension plates through reinforcing ribs, and the extension plates of the two hollow beams corresponding to the two hollow bed frames are fixedly connected by bolts, and one end of the hollow beam is located between the two extension plates and a fixing plate is installed, and the fixing plates of the two hollow beams corresponding to the two hollow bed frames are fixedly connected to a connecting plate through bolts.

[0007] Furthermore, the mobile laser cutting device includes two first linear guides and two first racks, the first linear guides and the first racks are respectively mounted on the linear guide mounting gasket and the rack mounting gasket, the top of the first linear guide is connected to a mobile mounting frame, the mobile mounting frame is installed with a first servo motor, the output end of the first servo motor is connected to a first gear, the first gear is meshed with the first rack, the tops of the two mobile mounting frames are commonly connected to a beam, the top and one side of the beam are both equipped with a second linear guide, the top of the beam is equipped with a second rack, the two second linear guides are commonly connected to a T-shaped mobile mounting frame, the T-shaped mobile mounting frame A second servo motor is installed on the frame, and the output end of the second servo motor is connected to the second gear, and the second gear is meshed with the second rack. A ball screw linear slide module is installed on one side of the T-shaped mobile mounting frame, and a laser cutting head is installed on the slide of the ball screw linear slide module. Anti-splash protective covers are installed on both sides of the T-shaped mobile mounting frame on the outside of the laser cutting head, and third linear guide rails are installed on both sides of the anti-splash protective cover. A fire curtain is connected to one side of the third linear guide rail, and a first lifting cylinder is installed on the front side of the anti-splash protective cover, and the output end of the first lifting cylinder is connected to the fire curtain. Two symmetrical intelligent safety gratings are installed on both ends of the beam.

[0008] Furthermore, a first drag chain placement groove is installed on one side of the hollow beam through a plurality of triangular support frames, and a second drag chain placement groove is installed on one side of the crossbeam through a plurality of triangular support frames.

[0009] Furthermore, the floating drag chain support device includes an L-shaped mounting plate, which is mounted on one side of the hollow beam, and two shells are connected to the top of the transverse section of the L-shaped mounting plate, a fixed plate is connected between the two inner side walls of the shell, and a support rod is connected between the fixed plate and the inner side wall of the shell, and the surface of the support rod is slidably connected to a rotating plate, and the bottom of the rotating plate is hingedly connected to the top of the transverse section of the L-shaped mounting plate by a hinge, and the surface of the support rod is located between the rotating plate and the side wall of the shell and is provided with a spring, and the top of the rotating plate is rotatably connected to the pulley, and the side wall of the shell is provided with a groove for the rotation of the pulley, and the bottom of the first drag chain placement groove is connected to the transverse section of the L-shaped mounting plate and is located between the two shells.

[0010] Furthermore, the telescopic hard limit device includes a guide plate with a groove, the guide plate is installed on one side of the hollow beam, a second telescopic cylinder is installed at the bottom of the guide plate, a limit plate is slidably connected in the groove of the guide plate, and a limit shock-absorbing pad is connected to the top of the limit plate.

[0011] Furthermore, both the front air vent and the side air vent may be installed with external air exhaust and dust removal equipment for exhausting and removing dust.

[0012] Furthermore, the follower damper assembly includes a cylinder mounting plate, an air outlet is opened on the inner side of the hollow beam, the cylinder mounting plate is connected to the inner wall of the hollow beam, a third telescopic cylinder is installed on the cylinder mounting plate, the output end of the third telescopic cylinder is connected to a sealing plate adapted to the air outlet, and a protective cover is installed on the outer side of the hollow beam outside the third telescopic cylinder.

[0013] Furthermore, a drag chain is provided in both the first drag chain placement groove and the second drag chain placement groove, and one end of the drag chain is connected to the laser cutting head.

[0014] In summary, the present invention has the following advantages compared with the prior art:

[0015] 1. The present invention adopts a spliced bed design, which significantly expands the travel in the Y-axis direction, making the machine tool more flexible when cutting large-sized workpieces. The hollow bed is spliced together to give the bed a higher stability and stronger load-bearing capacity, while reducing the overall weight of the bed. Cross-connected support beams and reinforcement beams are used to form a stable support structure in the spliced bed, ensuring that the machine can still maintain accuracy and stability when working under high loads. The cutting head can move flexibly in the X, Y, and Z axis directions, ensuring that large-format workpieces can be processed efficiently with high cutting accuracy. Driven by a servo motor and a rack, the movement accuracy of the laser cutting head can achieve more refined cutting operations.

[0016] 2. The two joined bed frames utilize a unified exhaust duct, and the location of the exhaust ports can be flexibly adjusted as needed. Front and side exhaust ports, combined with external dust removal equipment, effectively remove smoke and dust generated during the cutting process. This design ensures a clean working environment and effectively protects the health of operators. The automatic opening and closing of the damper ensures that smoke and dust generated during the cutting process are promptly drawn into the system and discharged, improving cutting results and the working environment.

[0017] 3. This design uses a floating drag chain support device to ensure unrestricted movement of the drag chain in the Y-axis direction, especially within the long travel range after the bed is spliced. The support and pulley cooperate to prevent the drag chain from sagging and dragging, effectively supporting the drag chain. Even at the front end of the cutting equipment, the drag chain can maintain stability and effective support. This design avoids the problems of drag chain loosening or instability that may occur with traditional drag chain supports, thereby improving the working efficiency and operational stability of the equipment.

[0018] 4. This invention utilizes intelligent safety grating detection technology. By installing intelligent safety gratings in front and behind the crossbeam, it can detect obstacles in the work area in real time. During operation, if the grating detects an obstacle on the work surface, the system immediately triggers the emergency brake of the first servo motor and stops the operation, effectively ensuring the safety of the operator.

[0019] 5. In order to reduce the interference of splashes on the safety grating during the laser cutting process, which may lead to misjudgment and endanger the safety of personnel and equipment, a special splash-proof protective cover is designed. The protective cover can effectively prevent splashes from entering the grating area, avoid misjudgment, and improve operational safety. The equipped fire curtain can automatically descend during the laser cutting process to further prevent splashes from interfering with the safety grating and ensure the accuracy of the grating signal.

[0020] 6. The telescopic hard limit device designed in the present invention can provide direct mechanical blocking effect when other protective measures fail, ensuring the safe limitation of the beam. The limit shock-absorbing pad can effectively buffer the impact and reduce the degree of damage to the equipment. Normally, the second telescopic cylinder is in a retracted state and does not affect the normal operation of the equipment.

[0021] 7. This design, through modular bed assembly and an adjustable exhaust system, not only makes the equipment more flexible in installation and commissioning, but also offers strong adaptability and scalability. Whether it's adjusting the equipment layout or customizing the exhaust system, both can be met through reasonable configuration and flexible design to meet actual production needs, enhancing the equipment's versatility and long-term operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the hollow bed structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the hollow bed structure of the present invention;

[0025] Figure 4 This is an enlarged view of the structure of part A of the present invention;

[0026] Figure 5 This is an enlarged view of the structure of part B of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the present invention;

[0028] Figure 7 This is a structural schematic diagram of the mobile laser cutting device of the present invention;

[0029] Figure 8 This is a structural schematic diagram of the mobile laser cutting device of the present invention;

[0030] Figure 9 This is a structural schematic diagram of the mobile laser cutting device of the present invention;

[0031] Figure 10 This is a structural schematic diagram of the mobile laser cutting device of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of the floating drag chain support device of the present invention;

[0033] Figure 12 It is a structural schematic diagram of the telescopic hard limit device of the present invention.

[0034] In the figure: 1-hollow bed, 2-fixed device, 3-mobile laser cutting device, 4-cutting workbench, 5-support blade seat, 6-support blade, 7-fire brick cart, 8-floating drag chain support device, 9-telescopic hard limit device, 10-intelligent safety grating, 101-hollow beam, 102-connecting hollow beam, 103-supporting hollow beam, 104-reinforcement beam, 105-front exhaust port, 106-side exhaust port, 107-linear guide rail mounting gasket, 108-rack mounting gasket, 109-follow-up damper assembly, 201-extension plate, 202-mounting plate, 203-connecting plate, 301-first linear guide, 302-first rack, 303-movable mounting frame, 304-first servo motor, 305-first gear, 306-crossbeam, 307-second linear guide, 308-second rack, 309-T-type mobile mounting frame, 310-second servo motor, 311-second gear, 312-ball screw linear slide module, 313-laser cutting head, 314-anti-splash protective cover, 315-third linear guide, 316-fire curtain, 317-first lifting cylinder, 11-first drag chain placement slot, 111-second drag chain placement slot, 12-drag chain, 801-L-type mounting plate, 802-housing, 803-fixed plate, 804-support rod, 805-rotating plate, 806-spring, 807-pulley, 901-guide plate, 902-second telescopic cylinder, 903-limit plate, 904-limit shock-absorbing pad, 1091-cylinder mounting plate, 1092-air outlet, 1093-third telescopic cylinder, 1094-sealing plate, 1095-protective cover. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further specifically described below through specific embodiments, but the present invention is not limited to these embodiments.

[0036] Combine Figures 1 to 12A large-format plane cutting machine with a multi-section spliced hollow bed structure includes two hollow beds 1, which are spliced and connected by a fixing device 2. A mobile laser cutting device 3 is provided on the top of the two hollow beds 1, and a cutting workbench 4 is provided on the two hollow beds 1. A plurality of supporting blade seats 5 are installed on the cutting workbench 4, and a plurality of supporting blade seats 5 are installed on the supporting blade seats 5. A plurality of fireproof brick carts 7 are provided at the bottom of the cutting workbench 4, and a plurality of floating drag chain support devices 8 are installed on one side of the hollow bed 1. Telescopic hard limit devices 9 are provided on both sides of the two hollow beds 1 at one side of the splicing of the two hollow beds 1, and an intelligent safety grating 10 is provided on the mobile laser cutting device 3.

[0037] Combine Figures 1 to 3 The hollow bed 1 includes two hollow beams 101, and a connecting hollow beam 102 is connected on both sides between the two hollow beams 101. A number of supporting hollow beams 103 and reinforcing beams 104 are evenly cross-connected between the two hollow beams 101. A front exhaust port 105 is opened on one side of the connecting hollow beam 102, and a side exhaust port 106 is opened on one side of the hollow beam 101. The supporting hollow beam 103 is connected to the hollow beam 101, and the top of the hollow beam 101 is installed. There are linear guide rail mounting gaskets 107 and rack mounting gaskets 108, and several follow-up damper assemblies 109 are set on one side of the hollow beam 101; the supporting hollow beam 103 is connected with the hollow beam 101, and the hollow beam 101 and the supporting hollow beam 103 are both hollow. The cavity of the hollow bed 1 after splicing is all through, and external exhaust and dust removal equipment can be selected at the front exhaust port 105 and the two side exhaust ports 106 to effectively reduce the accumulation of dust and smoke.

[0038] Combine Figure 4 The fixing device 2 includes an extension plate 201. One end of the hollow beam 101 is connected to two extension plates 201 through reinforcing ribs. The extension plates 201 of the two hollow beams 101 corresponding to the two hollow bed frames 1 are fixedly connected by bolts. One end of the hollow beam 101 is located between the two extension plates 201 and a mounting plate 202 is installed. The mounting plates 202 of the two hollow beams 101 corresponding to the two hollow bed frames 1 are fixedly connected with a connecting plate 203 through bolts. The four hollow beams 101 of the two hollow bed frames 1 are spliced together, and then the corresponding extension plates 201 are fixedly connected by bolts, and then the connecting plate 203 is fixedly connected to the mounting plate 202 by bolts, ensuring the firm splicing of the two hollow bed frames, which can withstand large cutting loads, increase the durability of the equipment, avoid loosening at the splicing joints, and improve the stability of the equipment.

[0039] Combine Figures 7 to 10The mobile laser cutting device 3 includes two first linear guide rails 301 and two first racks 302. The first linear guide rails 301 and the first racks 302 are respectively mounted on the linear guide rail mounting pads 107 and the rack mounting pads 108. The top of the first linear guide rail 301 is connected to a mobile mounting frame 303. The mobile mounting frame 303 is mounted with a first servo motor 304. The output end of the first servo motor 304 is connected to a first gear 305. The first gear 305 is meshed with the first rack 302. The tops of the two mobile mounting frames 303 are commonly connected to a crossbeam 306. The crossbeam 30 6. A second linear guide rail 307 is installed on the top and one side of the crossbeam 306. A second rack 308 is installed on the top of the crossbeam 306. The two second linear guide rails 307 are connected to a T-shaped mobile mounting frame 309. A second servo motor 310 is installed on the T-shaped mobile mounting frame 309. The output end of the second servo motor 310 is connected to a second gear 311. The second gear 311 is meshed with the second rack 308. A ball screw linear slide module 312 is installed on one side of the T-shaped mobile mounting frame 309. A laser cutting head 313 is installed on the slide of the ball screw linear slide module 312. Anti-splash protective covers 314 are installed on both sides of the mounting frame 309 outside the laser cutting head 313. Third linear guide rails 315 are installed on both sides of the anti-splash protective cover 314. A fire curtain 316 is connected to one side of the third linear guide rail 315. A first lifting cylinder 317 is installed on the front side of the anti-splash protective cover 314. The output end of the first lifting cylinder 317 is connected to the fire curtain 316. Two symmetrical intelligent safety gratings 10 are installed at both ends of the beam 306. The first and second servo motors cooperate with the rack and guide rail system to provide precise motion control, ensuring that the laser cutting head 313 can move freely in X, Y, Precise positioning on the Z-axis improves cutting accuracy. The intelligent safety grating 10 can detect in real time whether there are obstacles in the working area. During equipment operation, when the grating detects the existence of an obstacle on the working surface, the system will immediately trigger the first servo motor 304 for emergency braking and stop operation, effectively ensuring the safety of the operator. The anti-splash protective cover 314 can effectively prevent splashes from entering the grating area, avoid misjudgment, and improve operational safety. The fire curtain 316 can automatically descend during the laser cutting process to further prevent splashes from interfering with the safety grating and ensure the accuracy of the grating signal.

[0040] Combine Figure 1 、 Figure 7 A first drag chain placement slot 11 is installed on one side of the hollow beam 101 through several triangular support frames, and a second drag chain placement slot 111 is installed on one side of the beam 306 through several triangular support frames, providing convenient space for storing the drag chain 12.

[0041] Combine Figure 11801 is mounted on one side of the hollow beam 101. Two shells 802 are connected to the top of the transverse section of the L-shaped mounting plate 801. A fixed plate 803 is connected between the inner side walls of the shell 802. A support rod 804 is connected between the fixed plate 803 and the inner side wall of the shell 802. A rotating plate 805 is slidably connected to the surface of the support rod 804. The bottom of the rotating plate 805 is hinged to the top of the transverse section of the L-shaped mounting plate 801 by a hinge. The surface of the support rod 804 is located at the rotating plate 805 and the side wall of the shell 802. A spring 806 is sleeved on the rotating plate 805 and the side wall of the shell 802. The top of the rotating plate 805 is rotatably connected to the pulley 807. The side wall of the shell 802 is provided with a groove for the rotation of the pulley 807. The bottom of the first drag chain placement slot 11 is connected to the transverse section of the L-shaped mounting plate 801, and is positioned Between the two shells 802, in actual production, the laser cutting head and various servo motors all require a drag chain 12 to organize the wiring harness. Since the Y-axis stroke of the spliced bed is too large, the drag chain 12 cannot be supported when moving, so a floating drag chain support device 8 is designed to support the drag chain 12. The drag chain 12 will be U-shaped, and the bottom of the drag chain 12 will be placed in the first drag chain placement groove 11, and the top of the drag chain 12 will slide on the two pulleys 807 for support. When the U-shaped part of the drag chain 12 passes between the two shells 802, the drag chain 12 will squeeze the two pulleys 807, forcing the rotating plate 805 to tilt along the hinge. At this time, the two pulleys 807 will have enough distance to allow the U-shaped part of the drag chain 12 to pass, and then the rotating plate 805 and the pulley 807 are restored by the spring 806.

[0042] Combine Figure 12 The telescopic hard limit device 9 includes a guide plate 901 with a groove. The guide plate 901 is installed on one side of the hollow beam 101. A second telescopic cylinder 902 is installed at the bottom of the guide plate 901. The groove of the guide plate 901 is slidingly connected to a limit plate 903. The top of the limit plate 903 is connected to a limit shock-absorbing pad 904. When other protection measures fail, the second telescopic cylinder 902 will drive the limit plate 903 upward, and the limit shock-absorbing pad 904 will prevent the mobile laser cutting device 3 from continuing to operate, providing a direct mechanical blocking effect. Normally, the second telescopic cylinder 902 is in a retracted state and does not affect the normal operation of the equipment.

[0043] Combine Figure 1 and Figure 3 Both the front exhaust port 105 and the side exhaust port 106 can be installed with external exhaust and dust removal equipment for exhaust and dust removal, which can effectively remove the smoke and dust generated during the cutting process, improve the working environment, and improve the cutting accuracy. They can be flexibly installed and adjusted according to specific needs to more efficiently clean the pollutants in the working area.

[0044] Combine Figure 1 、 Figure 3The follow-up damper assembly 109 includes a cylinder mounting plate 1091, and an air outlet 1092 is opened on the inner side of the hollow beam 101. The cylinder mounting plate 1091 is connected to the inner wall of the hollow beam 101, and a third telescopic cylinder 1093 is installed on the cylinder mounting plate 1091. The output end of the third telescopic cylinder 1093 is connected to a sealing plate 1094 adapted to the air outlet 1092. A protective cover 1095 is installed outside the third telescopic cylinder 1093 on the outside of the hollow beam 101. When the laser cutting head 313 is located at a certain place for cutting, the third telescopic cylinder 1093 under the laser cutting head 313 drives the sealing plate 1094 to be pushed out. At this time, the air outlet 1092 will be opened, and the smoke will be sucked into the exhaust dust removal equipment through the inner cavity of the hollow beam 101 to achieve the effect of follow-up dust removal, while the air outlets at other positions are not opened, thereby improving the dust extraction effect.

[0045] Combine Figure 1 、 Figure 7 A drag chain 12 is provided in both the first drag chain placement slot 11 and the second drag chain placement slot 111. One end of the drag chain 12 is connected to the laser cutting head 313, ensuring that the cables, harnesses, etc. of the laser cutting head 313 can be transmitted safely and efficiently without being interfered with or damaged by the outside world.

[0046] Working principle: First, connect the two hollow bed frames 1 through the fixing device 2 to ensure that the bed frames are firmly and stably spliced, and then splice the four hollow beams 101 of the two hollow bed frames 1 together, and then fix the corresponding extension plates 201 with bolts, and then fix the connecting plate 203 with the mounting plate 202 with bolts. At this time, the two hollow bed frames 1 are fixed together. Since the supporting hollow beam 103 is connected with the hollow beam 101, the hollow beam 101 and the supporting hollow beam 103 are both hollow, so the cavity of the spliced hollow bed frame 1 is all through. You can choose to connect an external exhaust dust removal device at the front exhaust port 105 and the two side exhaust ports 106, and when the laser cutting head 313 is cutting During cutting, when the laser cutting head 313 is located at a certain place for cutting, the third telescopic cylinder 1093 below the laser cutting head 313 drives the sealing plate 1094 to be pushed out. At this time, the air outlet 1092 will be opened, and the smoke will be sucked into the exhaust dust removal equipment through the inner cavity of the hollow beam 101 to achieve the effect of follow-up dust removal. The first servo motor 304 drives the first gear 305 to engage with the first rack 302, so that the movable mounting frame 303 can move on the first linear guide rail 301, that is, the Y-axis movement. The second servo motor 310 drives the second gear 311 to engage with the second rack 308, so that the T-shaped movable mounting frame 309 can move on the second linear guide rail 307, that is, the X-axis movement. The screw linear slide module 312 enables the laser cutting head 313 to move up and down on the slide, that is, the Z-axis movement. At this time, the laser cutting head 313 can move freely on the X, Y, and Z axes. During the cutting process, splashes may affect the grating signal, resulting in misjudgment, thereby endangering the safety of personnel and equipment. The anti-splash protective cover 314 effectively reduces the interference of splashes on the signal of the intelligent safety grating 10. The fire curtain 316 is driven by the first lifting cylinder 317 to move along the third linear guide rail 315 to further prevent splashes from affecting the grating signal. In actual production, the laser cutting head and various servo motors require the drag chain 12 to organize the wiring harness. Since the Y-axis stroke of the spliced bed is too large, the drag chain 1 2 cannot be supported when moving, so a floating drag chain support device 8 is designed to support the drag chain 12. The drag chain 12 will be U-shaped, with the bottom of the drag chain 12 placed in the first drag chain placement groove 11, and the top of the drag chain 12 will slide on the two pulleys 807 for support. When the U-shaped part of the drag chain 12 passes between the two shells 802, the drag chain 12 will squeeze the two pulleys 807, forcing the rotating plate 805 to tilt along the hinge. At this time, the two pulleys 807 will have enough distance to allow the U-shaped part of the drag chain 12 to pass, and then the rotating plate 805 and the pulley 807 are restored by the spring 806. The intelligent safety grating 10 is installed before and after the crossbeam 306 to realize real-time detection of whether there are obstacles in the working area.During the operation of the equipment, when the grating detects the presence of an obstacle on the working surface, the system will immediately trigger the first servo motor 304 to perform emergency braking and stop operation, effectively ensuring the safety of the operator. When other protective measures fail, the second telescopic cylinder 902 will drive the limit plate 903 upward, and the limit shock-absorbing pad 904 will block the mobile laser cutting device 3 from continuing to operate, providing a direct mechanical blocking effect. Normally, the second telescopic cylinder 902 is in a retracted state and does not affect the normal operation of the equipment.

[0047] The embodiments of the present invention are not limited to the above embodiments. Without departing from the spirit and scope of the present invention, ordinary technicians in this field can make various changes and improvements to the present invention in form and details, and these are all considered to fall within the scope of protection of the present invention.

Claims

1. A large-format plane cutting machine with a multi-section hollow bed structure, comprising two hollow beds (1), characterized in that: The two hollow bed frames (1) are connected by a fixing device (2), and a movable laser cutting device (3) is provided on the top of the two hollow bed frames (1). A cutting workbench (4) is provided on the two hollow bed frames (1), and a plurality of supporting blade seats (5) are installed on the cutting workbench (4). A plurality of supporting blade seats (6) are installed on the supporting blade seats (5). A plurality of fireproof brick trolleys (7) are provided at the bottom of the cutting workbench (4). A plurality of floating drag chain support devices (8) are installed on one side of the hollow bed frame (1). A telescopic hard limit device (9) is provided on both sides of the two hollow bed frames (1) at one side of the splicing point of the two hollow bed frames (1), and an intelligent safety grating (10) is provided on the movable laser cutting device (3). The hollow bed (1) comprises two hollow beams (101), both sides of the two hollow beams (101) are connected with connecting hollow beams (102), and a plurality of supporting hollow beams (103) and reinforcing beams (104) are evenly cross-connected between the two hollow beams (101), one side of the connecting hollow beams (102) is provided with a front exhaust port (105), and one side of the hollow beam (101) is provided with a side exhaust port (106), the supporting hollow beam (103) is connected to the hollow beam (101), a linear guide rail mounting gasket (107) and a rack mounting gasket (108) are installed on the top of the hollow beam (101), and a plurality of follower damper assemblies (109) are provided on one side of the hollow beam (101); The floating drag chain support device (8) includes an L-shaped mounting plate (801), the L-shaped mounting plate (801) is mounted on one side of the hollow beam (101), the top of the transverse section of the L-shaped mounting plate (801) is connected to two shells (802), a fixed plate (803) is connected between the inner side walls of the shell (802), a support rod (804) is connected between the fixed plate (803) and the inner side wall of the shell (802), a rotating plate (805) is slidably connected to the surface of the support rod (804), the bottom of the rotating plate (805) is hingedly connected to the top of the transverse section of the L-shaped mounting plate (801) by a hinge, and the surface of the support rod (804) is located between the rotating plate (805) and the side wall of the shell (802). A spring (806) is provided, the top of the rotating plate (805) is rotatably connected to a pulley (807), the side wall of the shell (802) is provided with a groove for rotating the pulley (807), the bottom of the first drag chain placement groove (11) is connected to the transverse section of the L-shaped mounting plate (801), and is located between the two shells (802); the telescopic hard limit device (9) includes a guide plate (901) with a groove, the guide plate (901) is installed on one side of the hollow beam (101), a second telescopic cylinder (902) is installed at the bottom of the guide plate (901), a limit plate (903) is slidably connected in the groove of the guide plate (901), and a limit shock-absorbing pad (904) is connected to the top of the limit plate (903).

2. The large-format plane cutting machine with a multi-section hollow bed structure according to claim 1, characterized in that: The fixing device (2) includes an extension plate (201), one end of each of the hollow beams (101) is connected to the two extension plates (201) via reinforcing ribs, the extension plates (201) of the two hollow beams (101) corresponding to the two hollow bed frames (1) are fixedly connected via bolts, one end of the hollow beam (101) is provided with a mounting plate (202) located between the two extension plates (201), and the mounting plates (202) of the two hollow beams (101) corresponding to the two hollow bed frames (1) are fixedly connected to a connecting plate (203) via bolts.

3. The large-format plane cutting machine with a multi-section hollow bed structure according to claim 2, characterized in that: The mobile laser cutting device (3) comprises two first linear guide rails (301) and two first racks (302), wherein the first linear guide rails (301) and the first racks (302) are respectively mounted on the linear guide rail mounting pads (107) and the rack mounting pads (108), a mobile mounting frame (303) is connected to the top of the first linear guide rail (301), a first servo motor (304) is mounted on the mobile mounting frame (303), and the first servo motor (304) ) output end is connected to a first gear (305), the first gear (305) is meshed with the first rack (302), the tops of the two mobile mounting frames (303) are commonly connected to a crossbeam (306), the top and one side of the crossbeam (306) are both installed with a second linear guide rail (307), the top of the crossbeam (306) is installed with a second rack (308), the two second linear guide rails (307) are commonly connected to a T-shaped mobile mounting frame (309), the T-shaped mobile mounting frame (3 09) is installed with a second servo motor (310), the output end of the second servo motor (310) is connected to a second gear (311), the second gear (311) is meshed with the second rack (308), a ball screw linear slide module (312) is installed on one side of the T-shaped mobile mounting frame (309), a laser cutting head (313) is installed on the slide of the ball screw linear slide module (312), and the laser cutting head (313) is located on both sides of the T-shaped mobile mounting frame (309). A splash-proof shield (314) is installed on the outside of the splash-proof shield (313), and third linear guide rails (315) are installed on both sides of the splash-proof shield (314). One side of the third linear guide rail (315) is connected to a fire curtain (316). A first lifting cylinder (317) is installed on the front side of the splash-proof shield (314), and the output end of the first lifting cylinder (317) is connected to the fire curtain (316). Two symmetrical intelligent safety gratings (10) are installed at both ends of the beam (306).

4. The large-format plane cutting machine with a multi-section hollow bed structure according to claim 3, characterized in that: A first drag chain placement slot (11) is installed on one side of the hollow beam (101) via a plurality of triangular support frames, and a second drag chain placement slot (111) is installed on one side of the crossbeam (306) via a plurality of triangular support frames.

5. The large-format plane cutting machine with a multi-section hollow bed structure according to claim 4, characterized in that: Both the front air exhaust port (105) and the side air exhaust port (106) can be equipped with external air exhaust and dust removal equipment for exhausting and removing dust.

6. The large-scale plane cutting machine with a multi-section hollow bed structure according to claim 5, characterized in that: The follower damper assembly (109) comprises a cylinder mounting plate (1091), an air outlet (1092) is provided on the inner side of the hollow beam (101), the cylinder mounting plate (1091) is connected to the inner side wall of the hollow beam (101), a third telescopic cylinder (1093) is mounted on the cylinder mounting plate (1091), an output end of the third telescopic cylinder (1093) is connected to a sealing plate (1094) adapted to the air outlet (1092), and a protective cover (1095) is mounted on the outer side of the hollow beam (101) and outside the third telescopic cylinder (1093).

7. The large-scale plane cutting machine with a multi-section hollow bed structure according to claim 6, characterized in that: A drag chain (12) is provided in both the first drag chain placement groove (11) and the second drag chain placement groove (111), and one end of the drag chain (12) is connected to the laser cutting head (313).

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