Steel plate laser cutting device

Abstract

The embodiment of the invention provides a steel plate laser cutting device, and relates to the technical field of metal material laser machining, the steel plate laser cutting device comprises a workbench, a portal frame is mounted on the workbench in the width direction, a laser cutting device is mounted on the portal frame, and the workbench comprises a mounting frame; a plurality of first supporting pieces parallel to one another are fixed to the mounting box in the width direction, second supporting pieces corresponding to the first supporting pieces are arranged in the mounting box, the second supporting pieces are arranged on the workbench in a sliding mode and slide in the length direction of the workbench, and a supporting plate moving in the vertical direction is arranged in the mounting box in a sliding mode; a plurality of sets of supports are fixed to the supporting plate, feeding rollers rotate on the same set of supports, the feeding rollers are parallel to one another and located between the adjacent first supporting pieces, and hydraulic oil cylinders for controlling the supporting plate to move up and down and feeding devices for adjusting sliding of the second supporting pieces are arranged on the supports. The device has the effect of facilitating steel plate collection and waste residue cleaning.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology for metal materials, and in particular to a laser cutting device for steel plates. Background Technology

[0002] Laser cutting uses a focused, high-power-density laser beam to irradiate the workpiece, causing the irradiated material to melt, vaporize, ablate, or reach its ignition point. At the same time, a high-speed airflow coaxial with the beam blows away the molten material, thereby cutting the workpiece.

[0003] Currently, existing steel plate laser cutting devices, such as the patent with publication number CN210413098U, disclose a laser cutting machine for steel plate processing, including longitudinal bars and transverse bars. The bottom end of the worktable is connected to the top end of the frame via a transmission device. Two sets of symmetrical columns are set on the right side of the top end of the frame, and a top plate is set on the top of the columns. Support plates are set on the left and right ends of the frame, and through holes are set on the top of the support plates. The top end of the first motor is connected to the bottom end of the support plates, and the top output end of the first motor is connected to the bottom input end of the first coupling. The top output end of the first coupling is connected to the bottom end of the first lead screw. The top end of the first lead screw is rotatably connected to the bottom end of the top plate. The top end of the crossbeam is provided with multiple sets of threaded holes that are connected vertically. The threaded holes at the top end of the crossbeam are fitted with the external threads of the first lead screw for installation. The crossbeam can move up and down on the first lead screw. The controller automatically cuts the steel plate, can automatically adapt to the shape of the steel plate, and quickly fix the steel plate to be cut, thereby improving the stability of the steel plate during the cutting process.

[0004] Regarding the aforementioned technologies, the cut steel plates need to be collected by workers themselves, which is time-consuming and labor-intensive. The residue produced by cutting cannot be cleaned up in a timely manner, and the residue at high temperatures has a certain degree of adhesion, easily adhering to the cut surface and becoming difficult to clean after cooling. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a steel plate laser cutting device.

[0006] The steel plate laser cutting device provided in this application adopts the following technical solution: A steel plate laser cutting device includes a worktable, a gantry frame mounted on the worktable along its width, a laser cutting device slidably mounted on the gantry frame, a mounting frame with a bottom for support, a mounting box with an open top fixed on the mounting frame, a plurality of parallel first support members fixed on the mounting box along its width for supporting parts, a second support member corresponding to the first support member disposed inside the mounting box, the second support member being slidably mounted on the worktable and sliding along the length of the worktable, a support plate moving vertically slidably disposed inside the mounting box, a plurality of sets of brackets fixed on the support plate, a feeding roller rotating on the same set of brackets, the plurality of feeding rollers being parallel to each other and located between adjacent first support members, and a hydraulic cylinder for controlling the up and down movement of the support plate and a feeding device for adjusting the sliding of the second support member disposed on the bracket.

[0007] Furthermore, the feeding device includes a drive shaft rotatably connected to the support plate, a plurality of drive bevel gears coaxially fixed on the drive shaft, a transmission shaft rotatably connected to the bracket, transmission shaft gears coaxially fixed at both ends of the transmission shaft, a driven bevel gear rotatably connected to the bracket, two transmission bevel gears meshing with the drive bevel gear and the driven bevel gear respectively, a feeding roller rotatably connected to the corresponding transmission bevel gear, a drive motor for driving the drive shaft to rotate fixed on the support plate, and a hydraulic cylinder for driving the support plate to move up and down fixed inside the mounting box; the feeding device also includes an adjustment mechanism for adjusting the distance between adjacent support members.

[0008] Furthermore, the inner sidewalls of the mounting box are provided with adjustment grooves along the length direction. The adjustment mechanism includes an adjustment block that is slidably disposed in the adjustment groove. The second support member is fixedly connected to the corresponding adjustment block. An extension block extending to the space between the corresponding first support member and the feeding roller is fixed at the bottom of the adjustment block. A connector is rotatably connected to the extension block. The other end of the connector is rotatably connected to the bracket.

[0009] Furthermore, the first support member, the second support member, the support plate, the bracket, and the support plate are all coated with laser rack protective agent.

[0010] Furthermore, both the first support member and the second support member include a vertically arranged positioning plate. The upper surface of the positioning plate is integrally formed with a positioning rod that is parallel to the positioning plate and has a width on both sides greater than the positioning plate. The upper end of the positioning rod is integrally formed with a plurality of positioning blocks. The positioning blocks are isosceles triangles and the plurality of positioning blocks are evenly distributed along the length direction of the positioning rod.

[0011] Furthermore, the positioning plate is hollow inside, and several sliding rods that slide upward through the positioning rod and positioning block are slidably arranged inside the positioning plate. The upper end face of the sliding rod is smoothly connected to the inclined surface of the positioning block. The positioning plate is provided with a driving assembly for driving the sliding rod to move upward and for cleaning welding slag.

[0012] Furthermore, the driving assembly includes a sliding plate connected to several sliding rods, a driving block is slidably disposed within the positioning plate, a driving inclined surface is formed on the upper end face of the driving block, the driving inclined surface abuts against the lower end face of the sliding plate, a driving rod extending out of the positioning plate is fixed on the driving block, the two positioning plates move toward each other, and the driving block drives the sliding rod to move upward by squeezing the driving rod, a driving spring is disposed within the positioning plate to pull the sliding plate downward, and a stop block is also fixed within the positioning plate to stop the downward movement of the sliding plate.

[0013] Furthermore, the connector is a telescopic cylinder that connects the extension block and the bracket.

[0014] Furthermore, discharge troughs are provided on both sides of the mounting box along its length to facilitate cleaning of the support plate.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. Enables automatic collection of cut steel plates, saving labor costs. In existing technologies, the cut steel plates need to be collected manually, which is time-consuming and labor-intensive. This device achieves automatic conveying of steel plates and collection of waste by setting up a feeding roller, a feeding device, and a sliding second support: Before cutting, the feeding roller moves upward and rotates, delivering the steel plate below the laser cutting device. Then, the feeding roller descends, and the first and second supports support and position the steel plate. After cutting, the hydraulic cylinder drives the support plate to rise, making the feeding roller higher than the first support. At this time, the feeding device (drive motor, drive shaft, bevel gear transmission, etc.) drives the feeding roller to rotate, which can automatically convey the cut steel plate along the length of the worktable to the designated position without manual handling, significantly improving production efficiency and reducing labor consumption.

[0016] 2. Clean up cutting debris promptly to prevent its accumulation and adhesion. To address the problems of timely residue removal, high-temperature residue adhesion, and difficulty in removal after cooling in existing technologies, this device achieves efficient residue removal through a multi-layered structural design: The sliding rod works in conjunction with the drive assembly: the sliding rod within the positioning plate moves upward under the action of the drive assembly (drive block, drive ramp, drive rod, etc.). When the second support moves towards the center, the drive rod is compressed, causing the drive block to move upward. The drive ramp then pushes the sliding plate and sliding rod upward, lifting the residue adhering to the positioning block (support), achieving immediate residue removal. The cleaning action can be completed after cutting but before the residue has completely cooled and hardened, avoiding the increased adhesion of high-temperature residue after cooling and reducing the workload of subsequent cleaning processes.

[0017] 3. Adaptable to steel plates of different sizes, enhancing the versatility and stability of the lifting device. The device adjusts the position of the second support member through an adjustment mechanism (adjustment groove, adjustment block, extension block, connector, etc.) to accommodate steel plates of different widths. At the same time, the positioning block design of the first and second support members (uniformly distributed isosceles triangles) enhances the support stability of the steel plate. Combined with the conveying function of the feeding roller, it ensures that the steel plate is not easily deviated during cutting and conveying, thus improving the cutting accuracy.

[0018] 4. Enhance device durability and reduce maintenance costs Key components such as the first support, the second support, and the support plate are all coated with laser rack protective agent, which can reduce the corrosion of components by high temperature and residue during laser cutting, extend the service life of the device, and reduce maintenance frequency and cost.

[0019] 5. Compact structural design and high degree of functional integration The device integrates cutting, supporting, conveying, and cleaning functions into one unit. Through the coordinated action of hydraulic cylinders, drive motors, bevel gear transmissions, and other structures, it achieves continuous "cutting-conveying-cleaning" operations without affecting laser cutting efficiency. The overall structure is compact, with high space utilization, and is suitable for industrial mass production scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0021] Figure 2 This is a schematic diagram illustrating the structure of the feeding device in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of the feeding device for driving according to an embodiment of this application.

[0023] Figure 4 This is a structural schematic diagram of the first support component.

[0024] Figure 5 This is a schematic diagram illustrating the structure of the driving component used in this application.

[0025] Figure 6 This is a schematic diagram of the structure of the driver block used in this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Mounting box; 3. Gantry frame; 4. Laser cutting device; 5. First support member; 6. Second support member; 7. Support plate; 8. Bracket; 9. Feeding roller; 10. Discharge chute; 11. Drive shaft; 12. Drive bevel gear; 13. Transmission shaft; 14. Transmission bevel gear; 15. Driven bevel gear; 16. Adjustment groove; 17. Adjustment block; 18. Extension block; 19. Connecting piece; 20. Positioning plate; 21. Positioning rod; 22. Positioning block; 23. Sliding rod; 24. Sliding plate; 25. Drive block; 26. Drive rod; 27. Drive spring; 28. Stop block. Detailed Implementation

[0027] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0028] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0029] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0030] Reference Figure 1 and Figure 2 A steel plate laser cutting device includes a worktable, the worktable including a mounting frame 1 fixed on the ground for support, a mounting box 2 with an open upper end fixed on the mounting frame 1, a gantry frame 3 installed in the width direction of the mounting box 2, and a laser cutting device for cutting steel plates slidably mounted on the gantry frame 3.

[0031] Reference Figure 1 and Figure 2 The mounting box 2 has several parallel first support members 5 fixed along its width. The first support members 5 are used to support the steel plate. The mounting box 2 is provided with second support members 6 corresponding to the first support members 5. The second support members 6 are slidably mounted on the worktable and slide along the length of the worktable, so that the distance between the first support members 5 and the second support members 6 can be adjusted to prevent parts that are too small from falling. The mounting box 2 has a support plate 7 that moves vertically. Several sets of brackets 8 are fixed on the support plate 7. Feeding rollers 9 rotate on the same set of brackets 8. The feeding rollers 9 are parallel to the first support members 5 and are located between adjacent first support members 5. The brackets 8 are provided with hydraulic cylinders to control the up and down movement of the support plate 7 and feeding devices to adjust the sliding of the second support members 6. The mounting box 2 has discharge slots 10 on both sides along its length to facilitate cleaning of the support plate 7.

[0032] Reference Figure 2 and Figure 3 The feeding device includes a drive shaft 11 rotatably connected to the support plate 7. Several drive bevel gears 12 are coaxially fixed on the drive shaft 11. The drive bevel gears 12 correspond to the bracket 8. A vertically arranged transmission shaft 13 is rotatably connected to the bracket 8. Transmission bevel gears 14 are coaxially fixed at both ends of the transmission shaft 13. A driven bevel gear 15 is rotatably connected to the bracket 8. The two transmission bevel gears 14 mesh with the drive bevel gears 12 and the driven bevel gears 15 respectively. The feeding roller 9 is rotatably connected to the corresponding transmission bevel gear 14. A drive motor that drives the drive shaft 11 to rotate is fixed on the support plate 7. Several hydraulic cylinders that drive the support plate 7 to move up and down are fixed inside the mounting box 2.

[0033] The hydraulic cylinder drives the support plate 7 to move upward, so that the feeding roller 9 protrudes above the first support member 5 and the second support member 6. The drive motor drives the transmission shaft 13 to rotate, and through the mutual cooperation of the drive bevel gear 12, the transmission bevel gear 14 and the driven bevel gear 15, the feeding roller 9 is driven to rotate, thereby facilitating the transport of the steel plate to the bottom of the laser cutting device.

[0034] Reference Figure 1 , Figure 2 and Figure 3The feeding device also includes an adjustment mechanism for adjusting the distance between adjacent support members. An adjustment groove 16 is provided along the length of the inner sidewall of the mounting box 2. The adjustment mechanism includes an adjustment block 17 slidably disposed within the adjustment groove 16. The end of the second support member 6 is fixedly connected to the corresponding adjustment block 17. An extension block 18 is fixed to the bottom of the adjustment block 17, extending to the space between the corresponding first support member 5 and the feeding roller 9. A connector 19 is rotatably connected to the extension block 18. The connector 19 is a telescopic cylinder, with one end rotatably connected to the extension block 18 and the other end rotatably connected to the support bracket 8. On one hand, the telescopic cylinder can control the sliding of the second support member 6; on the other hand, the hydraulic cylinder can drive the lifting and lowering of the support plate 7 and the support bracket 8 to control the sliding of the second support member 6, thereby controlling the distance between the first support member 5 and the second support member 6.

[0035] Reference Figure 2 and Figure 4 The first support 5, the second support 6, the support plate 7, the bracket 8, and the support plate 7 are all coated with a laser rack protectant. Laser rack protectants typically have excellent high-temperature resistance (able to withstand instantaneous high temperatures of hundreds to thousands of degrees Celsius), forming a heat barrier on the component surface to reduce heat conduction into the component, preventing deformation, oxidation, or material deterioration due to high temperatures (such as annealing or embrittlement of metal components). During laser cutting, a large amount of molten metal slag (such as iron oxide) is generated. These high-temperature residues have strong adhesion and easily adhere firmly to the support surface after cooling, not only affecting subsequent cleaning but also potentially causing corrosion (such as oxidation and rust) due to repeated high-temperature heating. The protectant surface typically has low surface energy characteristics, reducing the adhesion between the slag and the component surface, making the residue easier to clean (with the push-pull structure of the sliding rod 23 in the patent, the cleaning effect is even better); at the same time, the protectant can isolate the metal component from oxygen, water vapor, and corrosive gases that may be generated during the cutting process (such as oxide gases produced by metal oxidation), reducing rust and chemical corrosion of the component.

[0036] Reference Figure 4 and Figure 5 The first support member 5 and the second support member 6 both include a vertically arranged positioning plate 20. The upper end surface of the positioning plate 20 is integrally formed with a positioning rod 21 parallel to the positioning plate 20. The width of the two sides of the positioning rod 21 is greater than the width of the positioning plate 20, which effectively reduces the possibility of welding slag adsorbing on the positioning plate 20. Several positioning blocks 22 are integrally formed on the upper end of the positioning rod 21. The positioning blocks 22 are isosceles triangles and are evenly laid on the positioning rod 21.

[0037] Reference Figure 4 , Figure 5 and Figure 6The positioning plate 20 is hollow inside. Several sliding rods 23 are slidably disposed within the positioning plate 20, extending upwards through the positioning rods 21 and positioning blocks 22. The upper end faces of the sliding rods 23 are smoothly connected to the inclined surfaces of the positioning blocks 22. The positioning plate 20 is equipped with a drive assembly for driving the sliding rods 23 upwards and for cleaning welding slag. The drive assembly includes a sliding plate 24 slidably disposed within the positioning plate 20 and connected to the several sliding rods 23. A drive block 25 is slidably disposed within the positioning plate 20. A drive inclined surface is formed on the upper end face of the drive block 25, abutting against the lower end face of the sliding plate 24. An extension extending to the positioning plate 22 is fixed on the drive block 25. The drive rod 26 outside the first support member 5 and the two positioning plates 20 of the second support member 6 move towards each other, and the drive block 25 drives the sliding rod 23 to move upward by squeezing the drive rod 26, so that the drive rod 26 can clean the positioning block 22. The positioning plate 20 is fixed with a drive spring 27 that pulls the sliding plate 24 downward. The positioning plate 20 is also fixed with a stop block 28. When the drive spring 27 pulls the sliding plate 24 downward, the stop block 28 is used to limit the movement stroke of the sliding plate 24. When the sliding plate 24 abuts against the stop block 28, the upper end surface of the sliding rod 23 and the inclined surface of the positioning block 22 form a smooth plane.

[0038] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or variations made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. A steel plate laser cutting device, comprising a worktable, wherein a gantry (3) is mounted on the worktable along its width direction, and a laser cutting device is slidably mounted on the gantry (3), characterized in that: The workbench includes a mounting frame (1) for bottom support. A mounting box (2) with an open top is fixed on the mounting frame (1). Several parallel first support members (5) supporting the parts are fixed on the mounting box (2) along the width direction. A second support member (6) corresponding to the first support member (5) is provided inside the mounting box (2). The second support member (6) is slidably mounted on the workbench and slides along the length direction of the workbench. A support plate (7) moving in the vertical direction is slidably mounted inside the mounting box (2). Several sets of brackets (8) are fixed on the support plate (7). Feeding rollers (9) rotate on the same set of brackets (8). Several feeding rollers (9) are parallel to each other and located between adjacent first support members (5). A hydraulic cylinder for controlling the up and down movement of the support plate (7) and a feeding device for adjusting the sliding of the second support member (6) are provided on the bracket (8).

2. The steel plate laser cutting device according to claim 1, characterized in that: The feeding device includes a drive shaft (11) rotatably connected to the support plate (7), a plurality of drive bevel gears (12) coaxially fixed on the drive shaft (11), a transmission shaft (13) rotatably connected to the bracket (8), transmission bevel gears (14) coaxially fixed at both ends of the transmission shaft (13), a driven bevel gear (15) rotatably connected to the bracket (8), the two transmission bevel gears (14) meshing with the drive bevel gears (12) and the driven bevel gears (15) respectively, a feeding roller (9) rotatably connected to the corresponding transmission bevel gear (14), a drive motor for driving the drive shaft (11) to rotate is fixed on the support plate (7), and a hydraulic cylinder for driving the support plate (7) to move up and down is fixed in the mounting box (2); the feeding device also includes an adjustment mechanism for adjusting the distance between adjacent support members.

3. The steel plate laser cutting device according to claim 2, characterized in that: The mounting box (2) has an adjustment groove (16) along its length on its inner sidewall. The adjustment mechanism includes an adjustment block (17) that is slidably disposed in the adjustment groove (16). The second support member (6) is fixedly connected to the corresponding adjustment block (17). The bottom of the adjustment block (17) is fixed with an extension block (18) that extends between the corresponding first support member (5) and the feeding roller (9). A connector (19) is rotatably connected to the extension block (18). The other end of the connector (19) is rotatably connected to the bracket (8).

4. The steel plate laser cutting device according to claim 3, characterized in that: The first support member (5), the second support member (6), the support plate (7), the bracket (8), and the support plate (7) are all coated with laser rack protectant.

5. The steel plate laser cutting device according to claim 4, characterized in that: The first support member (5) and the second support member (6) both include a vertically arranged positioning plate (20). The upper surface of the positioning plate (20) is integrally formed with a positioning rod (21) parallel to the positioning plate (20) and with a width on both sides greater than that of the positioning plate (20). The upper end of the positioning rod (21) is integrally formed with a plurality of positioning blocks (22). The positioning blocks (22) are isosceles triangles and the plurality of positioning blocks (22) are evenly distributed along the length direction of the positioning rod (21).

6. The steel plate laser cutting device according to claim 5, characterized in that: The positioning plate (20) is hollow inside. Several sliding rods (23) are slidably arranged inside the positioning plate (20) and penetrating the positioning rod (21) and the positioning block (22) upward. The upper end face of the sliding rod (23) is smoothly connected to the inclined surface of the positioning block (22). The positioning plate (20) is provided with a driving component for driving the sliding rod (23) to move upward and for cleaning welding slag.

7. A steel plate laser cutting device according to claim 6, characterized in that: The driving assembly includes a sliding plate (24) connected to several sliding rods (23). A driving block (25) is slidably disposed in the positioning plate (20). A driving inclined surface is provided on the upper end face of the driving block (25). The driving inclined surface abuts against the lower end face of the sliding plate (24). A driving rod (26) extending out of the positioning plate (20) is fixed on the driving block (25). The two positioning plates (20) move toward each other. By squeezing the driving rod (26), the driving block (25) drives the sliding rods (23) to move upward. A driving spring (27) is provided in the positioning plate (20) to pull the sliding plate (24) downward. A stop block (28) is also fixed in the positioning plate (20) to limit the downward movement of the sliding plate (24).

8. A steel plate laser cutting device according to claim 7, characterized in that: The connector (19) is a telescopic cylinder that connects the extension block (18) and the bracket (8).

9. A steel plate laser cutting device according to claim 8, characterized in that: The mounting box (2) has discharge slots (10) on both sides along its length to facilitate cleaning of the support plate (7).

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