A stainless steel plate plasma laser cutting device

Abstract

The application provides a stainless steel plate plasma laser cutting device, which comprises a device base, a cutting platform, a feeding mechanism arranged on one side of the device base and a cutting mechanism arranged on the cutting platform, characterized in that: the cutting platform is provided with a positioning mechanism, the positioning mechanism comprises two groups of negative pressure seats for adsorbing and fixing the plate and capable of synchronous and opposite folding, and a stamping assembly for applying pressure to the cut part of the plate to assist the bending; the cutting mechanism comprises a laser head and a transmittance enhancer nozzle; the device gradually bends the cut part of the plate through the bending structure and the stamping structure in the positioning mechanism, expands the cutting opening, facilitates the efficient contact of the laser with the bottom of the cutting groove and the dropping and coating of the transmittance enhancer, and realizes the efficient cutting of the thicker plate by cooperating with the dropping and coating of the transmittance enhancer and the repeated movement of the cutting.

Description

Technical Field

[0001] This invention relates to the field of plasma laser cutting technology, and more particularly to a plasma laser cutting device for stainless steel plates. Background Technology

[0002] Plasma laser cutting is a metal processing technology primarily used for cutting various materials. It combines the advantages of both plasma and laser technologies, enabling it to meet the cutting needs of different sheet materials.

[0003] Chinese patent CN201721213274.4 discloses a high-efficiency plasma laser cutting machine, including a platform support and a power protection device. The lower end of the platform support is fixedly installed with a support leg, and the upper end of the platform support is provided with an operating platform. A longitudinal sliding rail is provided on one side of the operating platform. A longitudinal moving stage is provided on the outer surface of the longitudinal sliding rail. A heat sink is fixedly installed on the upper end of the longitudinal moving stage. A transverse moving stage is fixedly installed on the lower surface of the heat sink. A first laser cutting head is fixedly installed on the lower end of the transverse moving stage. A second laser cutting head is provided on one side of the first laser cutting head.

[0004] However, this technical solution has certain drawbacks in use. The plasma laser cutting machine has a limited cutting thickness. When the stainless steel plate is thick, the cutting quality (such as bevel, roughness, and slag) is poor, the heat-affected zone is large, and the precision is limited. Therefore, we propose a plasma laser cutting device for stainless steel plates. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a plasma laser cutting device for stainless steel plates. This device achieves the cutting function through a folding mechanism in conjunction with a stamping mechanism, thus solving the problem of the inconvenience in cutting and processing thicker plates.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A plasma laser cutting device for stainless steel plates includes a device base, a cutting platform, a feeding mechanism disposed on one side of the device base, and a cutting mechanism disposed on the cutting platform. The device is characterized in that: a positioning mechanism is provided on the cutting platform, the positioning mechanism including two sets of negative pressure seats for adsorbing and fixing the plate and capable of synchronously folding in opposite directions, and a stamping assembly for applying pressure to the cut portion of the plate to assist in bending; the cutting mechanism includes a laser head and an anti-reflection agent nozzle.

[0007] The feeding mechanism includes a feeding rack mounted on the base of the device, a conveyor belt mounted on the feeding rack, a material frame mounted at the top of the feeding rack, multiple sets of material plates stacked in the material frame, the multiple sets of material plates being stainless steel plates, and multiple sets of limiting components mounted inside the feeding rack.

[0008] The positioning mechanism includes an adsorption plate disposed on two sets of negative pressure seats, and a folding assembly, a guide assembly, and a clamping assembly are installed at the bottom of the two sets of negative pressure seats.

[0009] The folding assembly includes: a folding shaft fixedly disposed on opposite sides of the two sets of negative pressure seats; a gear sleeve distributed and fixedly installed at both ends of the two sets of folding shafts, with the two sets of folding shafts meshing with each other via the gear sleeve; a structural seat installed at the bottom of one set of negative pressure seats; a stepper motor installed inside the structural seat; an output gear installed at one end of the stepper motor drive shaft; a reduction gear set disposed inside the structural seat; an output shaft extending through and connected to one side of the structural seat; a transmission wheel disposed at one end of the output shaft and the folding shaft; and a transmission belt connecting the output shaft and the transmission wheel at one end of the folding shaft via a transmission belt.

[0010] The guiding assembly includes: a horizontal plate, which is fixedly installed inside the cutting platform; a guide rail, with multiple sets of guide rails fixedly installed on the horizontal plate; a guide slider, which is movably connected to the multiple sets of guide rails; a crank seat a, which is disposed on the multiple sets of guide sliders; a crank seat b, which is fixedly installed at the bottom of two sets of negative pressure seats; and a connecting rod, with the crank seat a and crank seat b movably connected by a connecting rod.

[0011] The stamping assembly includes: a stamping base, which is fixedly mounted on the horizontal plate; a hydraulic cylinder, which is disposed on the stamping base; a hydraulic rod, which is the output rod of the hydraulic cylinder; an output plate, which is fixedly mounted on the top end of the hydraulic rod; and two sets of guide rods, which are fixedly connected to the bottom of the output plate.

[0012] The clamping assembly includes: an L-shaped support fixedly connected to both sides of the two sets of negative pressure seats; a hinge located at the connection point of the L-shaped support on the two sets of negative pressure seats; clamping cylinders mounted on the L-shaped support; a pressure plate fixedly connected to the output ends of the two sets of clamping cylinders; and multiple buffer springs located at the connection point between the pressure plate and the output ends of the clamping cylinders.

[0013] The cutting mechanism includes a displacement beam located at the top of the cutting platform. Two sets of support plates are provided at the bottom of the displacement beam. The displacement beam is equipped with a longitudinal movement component, a lateral movement component, a vertical movement component, and a cutting component.

[0014] The longitudinal movement component includes: a longitudinal guide plate, which is fixedly mounted on the cutting platform; a longitudinal drive group, which is disposed on the outer side of the longitudinal guide plate; and a longitudinal rack, which is fixedly mounted on the longitudinal guide plate. The transverse movement component includes: a transverse base plate, which is movably connected to the displacement beam; a transverse drive group, which is disposed on the transverse base plate; and a transverse rack, which is fixedly connected to the displacement beam. The vertical movement component includes: a vertical plate, which is fixedly connected to one side of the transverse base plate; an adjusting plate, which is movably connected to one side of the vertical plate; a vertical motor, which is disposed at the top of the vertical plate; a lead screw, which is fixedly connected to the bottom end of the vertical motor drive shaft; and a nut, which is fixedly connected to the inner side of the adjusting plate.

[0015] The cutting assembly includes: a device plate movably connected to the outside of the adjusting plate; an assembly plate fixedly connected to the outside of the device plate; a structural plate fixedly connected to the outside of the assembly plate; a crossbar disposed between two sets of structural plates; and a conduit disposed at the tail end of the penetration enhancer nozzle.

[0016] The beneficial effects of this invention are as follows: (1) This invention fundamentally changes the traditional operation mode of thick plate laser cutting by using an iterative composite process of cutting-mechanical bending and grooving-enhancing and re-cutting. Traditional processes rely on single high-power cutting, which is easily limited by the kerf depth-to-width ratio, resulting in energy attenuation, slag retention, and a decline in cut surface quality. This invention decomposes the task of cutting thick plates that is difficult to penetrate in a single cut into a finely executed, cyclical process: First, an initial laser cut is performed to form a guide cut; then, a special mechanism is used to simultaneously and precisely bend the plate along both sides of the cut at a certain angle (e.g., 5°), and combined with bottom stamping assistance, the linear cut is mechanically expanded into a V-shaped open groove; next, an enhancing agent is dripped into the open V-shaped groove; finally, the laser performs a deeper cut on the bottom of the groove that has been coated with the enhancing agent. By repeating the cycle of bending and grooving-enhancing and deep cutting, the material is removed layer by layer until the workpiece is completely separated. This technological innovation combines the physical spatial advantages of mechanical grooving with the energy coupling advantages of the brightening agent, synergistically improving the effectiveness and efficiency of each laser cut, and systematically solving the problems of energy transmission, slag removal and cut surface quality control in thick plate cutting.

[0017] (2) This invention provides a precise and reliable physical execution guarantee for the above-mentioned composite process through an intelligent positioning and bending mechanism that integrates synchronous folding, stamping assistance and dynamic edge clamping. The core of this mechanism lies in its high integration and collaborative control: a double folding shaft system driven by a stepper motor and driven by gear sleeve meshing ensures that the negative pressure seats on both sides drive the material to fold in strict synchronization and opposite directions, and the angle control is precise; an independent stamping component is innovatively set in the folding path, and its output plate can press the back of the cut from bottom to top during bending, forming a composite force field of folding + pressing, which significantly reduces bending resistance, especially beneficial for efficient grooving of thick plates; at the same time, it is equipped with a clamping component connected by a hinge and can be linked with the negative pressure seat. The pressure plate driven by its clamping cylinder can continuously apply elastic clamping force to the cutting edge of the plate throughout the entire processing cycle, effectively suppressing the deformation and displacement of the plate during repeated bending and cutting.

[0018] (3) This invention achieves precise synchronization and seamless connection between two different functional operations in space and time by constructing an integrated collaborative execution terminal and three-dimensional motion system for laser cutting and anti-reflection agent application. This innovation is reflected in terminal integration and motion coordination: the laser head and anti-reflection agent nozzle are rigidly integrated on the same cutting component through an assembly plate, structural plate, and crossbar, ensuring a fixed relative position between the two; the integrated terminal is driven by a unified longitudinal movement component, a transverse movement component, and a vertical movement component, which can be precisely positioned in three-dimensional space. This integrated design allows the laser cutting path and the anti-reflection agent spraying path to perfectly overlap, and the process switching does not require repositioning, ensuring that the anti-reflection agent can be accurately coated on the area to be cut within the V-shaped groove formed by bending, and then the laser beam can act on the same area. It solves the problems of positioning accumulation error and complex action timing coordination in multi-process collaboration from the hardware level, and improves the linkage accuracy, response speed, and overall process flow of the two core processes of anti-reflection and cutting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the feeding mechanism of the present invention; Figure 4 This is a schematic diagram of the cutting platform structure of the present invention; Figure 5 This is a schematic diagram of the overall structure of the positioning mechanism of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the positioning mechanism of the present invention; Figure 7 This is a schematic diagram of the negative pressure seat structure of the present invention; Figure 8This is a partial structural diagram of the folding component of the present invention; Figure 9 This is a schematic diagram of the stamping component structure of the present invention; Figure 10 This is a schematic diagram of the puncture structure of the stamping component of the present invention; Figure 11 This is a schematic diagram of the clamping component structure of the present invention; Figure 12 This is a schematic diagram of the overall structure of the cutting component of the present invention; Figure 13 This is a partial structural diagram of the cutting component of the present invention; Figure 14 This is a schematic diagram illustrating the bending effect of the present invention.

[0020] The reference numerals in the accompanying drawings of this application are as follows: 1. Device base; 2. Feeding mechanism; 201. Feeding rack; 202. Conveyor belt; 203. Material frame; 204. Material plate; 205. Limiting component; 3. Cutting platform; 4. Positioning mechanism; 401. Negative pressure seat; 402. Adsorption plate; 41. Folding assembly; 411. Folding shaft; 412. Gear sleeve; 413. Structural seat; 414. Stepper motor; 415. Output gear; 416. Reduction gear set; 417. Output shaft; 418. Transmission wheel; 419. Transmission belt; 42. Guide assembly; 421. Horizontal plate; 422. Guide rail; 423. Guide slider; 424. Crank seat a; 425. Crank seat b; 426. Connecting rod; 43. Stamping assembly; 431. Stamping seat; 432. Hydraulic cylinder; 433. Hydraulic rod; 434. 435. Guide rod; 44. Clamping assembly; 441. L-shaped support; 442. Hinge; 443. Clamping cylinder; 444. Buffer spring; 445. Pressure plate; 5. Cutting mechanism; 501. Displacement beam; 502. Support plate; 51. Longitudinal movement assembly; 511. Longitudinal guide rail plate; 512. Longitudinal drive group; 513. Longitudinal rack; 52. Lateral movement assembly; 521. Lateral base plate; 522. Lateral drive group; 523. Lateral rack; 53. Vertical movement assembly; 531. Vertical plate; 532. Adjusting plate; 533. Vertical motor; 534. Lead screw; 535. Nut; 54. Cutting assembly; 541. Equipment plate; 542. Assembly plate; 543. Laser head; 544. Structural plate; 545. Crossbar; 546. Penetrating agent nozzle; 547. Conduit. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Example 1: As Figures 1-14 As shown, this embodiment provides a plasma laser cutting device for stainless steel plates, including a device base 1, a cutting platform 3, a feeding mechanism 2 disposed on one side of the device base 1, and a cutting mechanism 5 disposed on the cutting platform 3. The device is characterized in that: a positioning mechanism 4 is disposed on the cutting platform 3, the positioning mechanism 4 including two sets of negative pressure seats 401 for adsorbing and fixing the plate and being able to flip in opposite directions synchronously, and a stamping component 43 for applying pressure to the cut part of the plate to assist its bending; the cutting mechanism 5 includes a laser head 543 and an anti-reflection agent nozzle 546.

[0025] The feeding mechanism 2 includes a feeding rack 201 mounted on the device base 1, a conveyor belt 202 mounted on the feeding rack 201, a material frame 203 mounted at the top of the feeding rack 201, multiple sets of material plates 204 stacked inside the material frame 203, the multiple sets of material plates 204 being stainless steel plates, and multiple sets of limiting members 205 mounted inside the feeding rack 201.

[0026] In this embodiment, the feeding mechanism 2 automatically transports the bottom plate 204 of the material frame 203 to a predetermined position on the cutting platform 3 via the conveyor belt 202. The positioning mechanism 4 uses two sets of negative pressure seats 401 to adsorb and fix the plate, and through its unique synchronous folding function, combined with the pressure applied by the stamping component 43, the plate can be gradually bent after the initial cut, thereby widening and opening the cut. The laser head 543 of the cutting mechanism 5 can make deeper cuts in the open cut, while the anti-reflection agent nozzle 546 can accurately drip anti-reflection agent into the cut. Through this cycle of cutting-bending-anti-reflection-recutting, efficient and high-quality cutting of thicker stainless steel plates is achieved.

[0027] Example 2: Figures 4-11 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: The positioning mechanism 4 includes an adsorption plate 402 disposed on two sets of negative pressure seats 401, and a folding assembly 41, a guide assembly 42 and a clamping assembly 44 are installed at the bottom of the two sets of negative pressure seats 401.

[0028] The folding assembly 41 includes: a folding shaft 411, which is fixedly disposed on opposite sides of two sets of negative pressure seats 401; a gear sleeve 412, which is distributed and fixedly installed at both ends of the two sets of folding shafts 411, and the two sets of folding shafts 411 are engaged with each other through the gear sleeves 412; a structural seat 413, which is installed at the bottom of one set of negative pressure seats 401; a stepper motor 414, which is installed inside the structural seat 413; and an output gear 415. Output gear 415 is mounted on one end of the drive shaft of stepper motor 414; reduction gear set 416 is set inside structural base 413; output shaft 417 is connected through to one side of structural base 413; transmission wheel 418 is set at one end of output shaft 417 and folding shaft 411; transmission belt 419 is used to drive the transmission wheel 418 at one end of output shaft 417 and folding shaft 411.

[0029] In this embodiment, the folding assembly 41 is the core component for achieving synchronous, opposite-facing folding of the negative pressure seat 401. After the stepper motor 414 starts, the power is transmitted via the output gear 415 to the reduction gear set 416 for speed reduction and torque increase, and then output by the output shaft 417. The output shaft 417 transmits power to a set of folding shafts 411 connected to it via the transmission wheel 418 and the transmission belt 419, causing them to rotate. Since the two sets of folding shafts 411 mesh with each other through the toothed sleeves 412 at their ends, the rotation of one set of folding shafts 411 will synchronously drive the other set of folding shafts 411 to rotate in the opposite direction, thereby precisely driving the two sets of negative pressure seats 401 and the two sides of the plates fixed on them to achieve synchronous, opposite-facing folding actions.

[0030] The guide assembly 42 includes: a horizontal plate 421, which is fixedly installed inside the cutting platform 3; a guide rail 422, with multiple sets of guide rails 422 fixedly installed on the horizontal plate 421; a guide slider 423, which is movably connected to the multiple sets of guide rails 422; a crank seat a 424, which is disposed on the multiple sets of guide sliders 423; a crank seat b 425, which is fixedly installed at the bottom of two sets of negative pressure seats 401; and a connecting rod 426, which movably connects the crank seats a 424 and b 425.

[0031] In this embodiment, the guide component 42 is used to constrain and guide the folding trajectory of the negative pressure seat 401, ensuring a smooth and precise folding process. When the negative pressure seat 401 rotates under the drive of the folding component 41, the crank seat b425 fixed to its bottom moves accordingly, pushing or pulling the crank seat a424 connected to the guide slider 423 via the connecting rod 426. The guide slider 423 is restricted to slide on the fixed guide rail 422, thereby converting the rotational folding motion of the negative pressure seat 401 into a stable motion along a predetermined path, preventing deviation and serving as a limiting function.

[0032] The stamping assembly 43 includes: a stamping base 431, which is fixedly mounted on a horizontal plate 421; a hydraulic cylinder 432, which is mounted on the stamping base 431; a hydraulic rod 433, which is the output rod of the hydraulic cylinder 432; an output plate 434, which is fixedly mounted on the top of the hydraulic rod 433; and guide rods 435, with two sets of guide rods 435 fixedly connected to the bottom of the output plate 434.

[0033] In this embodiment, the stamping assembly 43 plays an auxiliary and reinforcing role during the bending process of the sheet metal. When the negative pressure seat 401 causes the sheet metal to begin bending, the hydraulic cylinder 432 is activated, driving the hydraulic rod 433 to extend and causing the output plate 434 to rise. The output plate 434 extends from the gap between the two sets of folding shafts 411, with its top surface contacting the bottom back surface of the cut section of the sheet metal, and continuously applying upward pressure. This pressure, in conjunction with the flipping torque of the negative pressure seat 401, allows for more effortless and efficient plastic bending of the sheet metal along the cutting seam, especially when cutting thicker sheets, significantly improving bending efficiency and opening size. The guide rod 435 engages with the guide hole on the stamping seat 431 to ensure stable vertical movement of the output plate 434.

[0034] The clamping assembly 44 includes: an L-shaped support 441, which is fixedly connected to both sides of the two sets of negative pressure seats 401; a hinge 442, which is located at the connection point of the L-shaped support 441 on the two sets of negative pressure seats 401; a clamping cylinder 443, which is installed on the L-shaped support 441; a pressure plate 445, which is fixedly connected to the output end of the two sets of clamping cylinders 443; and a buffer spring 444, which is located at the connection point between the pressure plate 445 and the output end of the clamping cylinder 443.

[0035] In this embodiment, the clamping assembly 44 is used to clamp and fix the two sides of the cutting path of the sheet metal before and during the cutting and bending processes. The clamping cylinder 443 can be a hydraulic cylinder or a pneumatic cylinder that drives the pressure plate 445 to press down, and the buffer spring 444 provides elastic clamping force, which not only ensures sufficient clamping force to prevent the sheet metal from shifting or warping during cutting or bending, but also avoids damage to the surface of the sheet metal due to excessive pressure. The L-shaped support 441 is connected to the negative pressure seat 401 through the hinge 442, so that the clamping assembly 44 can be folded together with the negative pressure seat 401, always maintaining effective clamping of the edge of the sheet metal, which is crucial for ensuring the quality and positional accuracy of the cut during multiple bending and cutting processes.

[0036] Example 3: Figures 12-13 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows: The cutting mechanism 5 includes a displacement beam 501 located on the top of the cutting platform 3. Two sets of support plates 502 are provided at the bottom of the displacement beam 501. The displacement beam 501 is provided with a longitudinal moving component 51, a transverse moving component 52, a vertical moving component 53 and a cutting component 54.

[0037] The longitudinal movement assembly 51 includes: a longitudinal guide plate 511, which is fixedly mounted on the cutting platform 3; a longitudinal drive group 512, which is disposed on the outside of the longitudinal guide plate 511; and a longitudinal rack 513, which is fixedly mounted on the longitudinal guide plate 511. The transverse movement assembly 52 includes: a transverse base plate 521, which is movably connected to the displacement beam 501; and a transverse drive group 522, which is disposed on the transverse base plate 521. The rack 523 is fixedly connected to the displacement beam 501; the vertical moving assembly 53 includes: a vertical plate 531, which is fixedly connected to one side of the horizontal moving base plate 521; an adjusting plate 532, which is movably connected to one side of the vertical plate 531; a vertical motor 533, which is located at the top of the vertical plate 531; a lead screw 534, which is fixedly connected to the bottom end of the drive shaft of the vertical motor 533; and a nut 535, which is fixedly connected to the inside of the adjusting plate 532.

[0038] In this embodiment, the longitudinal moving component 51, the transverse moving component 52, and the vertical moving component 53 together constitute the three-dimensional precision motion system of the cutting mechanism 5. The longitudinal drive group 512 and the transverse drive group 522 typically include servo motors and gears meshing with them. The motors drive the gears to roll on the fixed longitudinal rack 513 and transverse rack 523, thereby realizing the overall movement of the displacement beam 501 along the longitudinal Y-axis of the cutting platform 3, and the transverse base plate 521 carrying the cutting component 54 along the transverse X-axis of the displacement beam 501. The vertical moving component 53 drives the lead screw 534 to rotate through the vertical motor 533, forming a helical pair with the nut 535 fixed on the adjusting plate 532, thereby driving the adjusting plate 532 and the cutting component 54 mounted on it to perform vertical Z-axis lifting and lowering movements. The coordinated movement in these three directions enables the laser head 543 and the anti-reflection agent nozzle 546 to be quickly and accurately positioned at any position in three-dimensional space, so as to complete complex cutting paths and adapt to the cutting depth of different bending stages.

[0039] The cutting assembly 54 includes: an equipment plate 541, which is movably connected to the outside of the adjusting plate 532; an assembly plate 542, which is fixedly connected to the outside of the equipment plate 541; a structural plate 544, which is fixedly connected to the outside of the assembly plate 542; a crossbar 545, which is disposed between two sets of structural plates 544; and a conduit 547, which is disposed at the tail end of the penetration enhancer nozzle 546.

[0040] In this embodiment, the cutting assembly 54 integrates the core components for performing cutting and applying the anti-reflective agent. A laser head 543 is fixedly mounted on the bottom of the mounting plate 542 for emitting a laser for cutting. An anti-reflective agent nozzle 546 is mounted on the structural plate 544 via a crossbar 545, its position precisely adjusted to ensure timely and accurate application of the anti-reflective agent to the cut along the same path as the laser head 543. A conduit 547 connects the anti-reflective agent nozzle 546 to an external anti-reflective agent storage and pumping system. A movable connection between the equipment plate 541 and the adjusting plate 532 allows for fine-tuning to ensure optimal relative position and operating angle between the laser head 543 and the anti-reflective agent nozzle 546. This integrated design simplifies the structure and improves the synchronization and accuracy of the "cut-apply" action.

[0041] Work steps Step 1, feeding process: The conveyor belt 202 is driven by the transport motor to automatically transport the bottom layer of the stainless steel plate 204 in the material frame 203 to the predetermined working position on the cutting platform 3. Step 2, Positioning Process: After the sensor on the cutting platform 3 detects that the board is in place, such as the limit switch, it triggers the control signal, so that the adsorption plate 402 on the negative pressure seat 401 firmly adsorbs and fixes the board on the two sets of negative pressure seats 401 through negative pressure, thus completing the initial positioning. The clamping cylinder 443 of the clamping assembly 44 is activated, driving the pressure plate 445 to move down. Through the elastic pressure provided by the buffer spring 444, the two sides of the cutting path of the plate are pressed against the surface of the negative pressure seat 401, achieving secondary stable clamping, providing a solid foundation for subsequent cutting and bending, and preventing edge deformation. Step 3, Initial Cutting Process: The longitudinal drive group 512 and the transverse drive group 522 of the cutting mechanism 5 are activated, driving the displacement beam 501 and the transverse base plate 521 to move, precisely positioning the laser head 543 above the preset cutting starting point of the material. The vertical motor 533 drives the lead screw 534 to rotate, which, through the nut 535, drives the adjusting plate 532 and the cutting assembly 54 to descend, adjusting the laser head 543 to a suitable cutting focal point height; The laser cutting system is activated, and the laser head 543 emits a laser beam while moving along the preset cutting path to cut the first through-thickness slit in the sheet material. Step 4, Multiple Bending and Cutting Process: Start the stepper motor 414 of the folding assembly 41. Power is reduced and increased in torque via the output gear 415 and reduction gear set 416, and then transmitted from the output shaft 417 through the transmission wheel 418 and transmission belt 419 to a set of folding shafts 411, causing them to rotate. Because the gear sleeves 412 at the ends of the two sets of folding shafts 411 mesh with each other, they synchronously drive the other set of folding shafts 411 to rotate in the opposite direction, causing the two sets of negative pressure seats 401 and the plates fixed on them to be folded synchronously towards each other along the cut at a small angle, for example, 5°. The crank seat b425 of the guide assembly 42 moves with the negative pressure seat 401, pushing the crank seat a424 through the connecting rod 426, causing the guide slider 423 to slide along the guide rail 422, ensuring a smooth folding process and precise guidance. Simultaneously or shortly after the folding action begins, the hydraulic cylinder 432 of the stamping assembly 43 is activated. The hydraulic rod 433 pushes the output plate 434 upward, extending from between the two sets of folding shafts 411, pressing against the central area of ​​the back side of the sheet metal cut, applying upward auxiliary pressure. This pressure, in conjunction with the folding torque, efficiently further opens the cut, forming a V-groove, significantly increasing the openness and depth of the cut. Within the V-shaped incision formed by bending, a penetration enhancer supply system connected to conduit 547 supplies liquid to penetration enhancer nozzle 546, accurately spraying or dripping penetration enhancer onto the bottom and sidewalls of the incision. The cutting mechanism 5 drives the laser head 543 to move again, performing a second cut on the bottom of the enlarged V-shaped cut coated with an anti-reflective agent. The anti-reflective agent improves the material's absorption rate of laser energy, resulting in higher cutting efficiency and greater cutting depth. Repeat the cycle of "gradually increasing bending angle → applying anti-reflective agent → cutting". Each bend increases the kerf angle and deepens the groove, facilitating the flow of anti-reflective agent and allowing the laser beam to penetrate deeper into the material; each cut, aided by the anti-reflective agent, more effectively deepens the kerf. Repeat this process multiple times until the thicker stainless steel sheet is completely cut through. Step 5, Reset Process: After cutting, all moving parts reset. The clamping cylinder 443 retracts to release the sheet metal, the suction plate 402 releases the sheet metal, the hydraulic rod 433 of the stamping assembly 43 retracts, and the folding assembly 41 drives the negative pressure seat 401 to rotate back to the initial horizontal position. The cut finished product can be removed, and the device is ready to process the next sheet metal.

[0042] It should be noted that in this embodiment, a thicker steel plate is cut multiple times. The first cut creates a slit in the steel plate. Then, the bending angle on both sides of the steel plate should not be too large, preferably 5°. The resulting slit is V-shaped. An anti-reflective agent is applied to the V-shaped slit, and the laser head 543 makes a second cut at the V-shaped slit. The anti-reflective agent enhances the plasma laser cutting effect. Then, the steel plate is bent on both sides again, and the angle of the V-shaped slit is gradually increased before further cutting. The increased angle of the V-shaped slit facilitates the flow of the anti-reflective agent to the bottom of the slit and also makes it easier for the laser head 543 to insert into the V-shaped slit for another cut. This process is repeated multiple times until the stainless steel plate is cut through.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plasma laser cutting device for stainless steel plates, comprising a device base (1), a cutting platform (3), a feeding mechanism (2) disposed on one side of the device base (1), and a cutting mechanism (5) disposed on the cutting platform (3), characterized in that: The cutting platform (3) is provided with a positioning mechanism (4), which includes two sets of negative pressure seats (401) for adsorbing and fixing the plate and being able to flip in opposite directions synchronously, and a stamping assembly (43) for applying pressure to the cut part of the plate to assist its bending; the cutting mechanism (5) includes a laser head (543) and a penetration enhancer nozzle (546).

2. The plasma laser cutting device for stainless steel plates according to claim 1, characterized in that, The feeding mechanism (2) includes a feeding rack (201) on the device base (1), a conveyor belt (202) is provided on the feeding rack (201), a material frame (203) is provided at the top of the feeding rack (201), and multiple sets of material plates (204) are stacked in the material frame (203). The multiple sets of material plates (204) are stainless steel plates, and multiple sets of limiting members (205) are provided in the feeding rack (201).

3. The plasma laser cutting device for stainless steel plates according to claim 1, characterized in that, The positioning mechanism (4) includes an adsorption plate (402) disposed on the two sets of negative pressure seats (401), and a folding component (41), a guide component (42) and a clamping component (44) are installed at the bottom of the two sets of negative pressure seats (401).

4. The plasma laser cutting device for stainless steel plates according to claim 3, characterized in that, The folding assembly (41) includes: a folding shaft (411), which is fixedly disposed on the opposite sides of the two sets of negative pressure seats (401); a gear sleeve (412), which is distributed and fixedly installed at both ends of the two sets of folding shafts (411), and the two sets of folding shafts (411) are meshed with each other through the gear sleeve (412); a structural seat (413), which is installed at the bottom of one set of negative pressure seats (401); a stepper motor (414), which is installed inside the structural seat (413); and an output gear (415). An output gear (415) is installed at one end of the drive shaft of the stepper motor (414); a reduction gear set (416) is disposed in the structural base (413); an output shaft (417) is connected through to one side of the structural base (413); a transmission wheel (418) is disposed at one end of the output shaft (417) and the folding shaft (411); and a transmission belt (419) is used to drive the transmission wheel (418) at one end of the output shaft (417) and the folding shaft (411).

5. The plasma laser cutting device for stainless steel plates according to claim 3, characterized in that, The guide assembly (42) includes: a horizontal plate (421), which is fixedly installed inside the cutting platform (3); a guide rail (422), which is fixedly installed on the horizontal plate (421); a guide slider (423), which is movably connected to the guide rail (422); a crank seat a (424), which is disposed on the guide slider (423); a crank seat b (425), which is fixedly installed at the bottom of two sets of negative pressure seats (401); and a connecting rod (426), which is movably connected to the crank seat a (424) and the crank seat b (425).

6. The plasma laser cutting device for stainless steel plates according to claim 5, characterized in that, The stamping assembly (43) includes: a stamping seat (431), which is fixedly installed on the horizontal plate (421); a hydraulic cylinder (432), which is disposed on the stamping seat (431); a hydraulic rod (433), which is the output rod of the hydraulic cylinder (432); an output plate (434), which is fixedly installed on the top of the hydraulic rod (433); and guide rods (435), two sets of guide rods (435) are fixedly connected to the bottom of the output plate (434).

7. The plasma laser cutting device for stainless steel plates according to claim 3, characterized in that, The clamping assembly (44) includes: an L-shaped support (441) fixedly connected to both sides of the two sets of negative pressure seats (401); a hinge (442) located at the connection point of the L-shaped support (441) on the two sets of negative pressure seats (401); a clamping cylinder (443) mounted on the L-shaped support (441); a pressure plate (445) fixedly connected to the output end of the two sets of clamping cylinders (443); and a buffer spring (444) located at the connection point between the pressure plate (445) and the output end of the clamping cylinder (443).

8. The plasma laser cutting device for stainless steel plates according to claim 1, characterized in that, The cutting mechanism (5) includes a displacement beam (501) located on the top of the cutting platform (3). Two sets of support plates (502) are provided at the bottom of the displacement beam (501). The displacement beam (501) is provided with a longitudinal moving component (51), a transverse moving component (52), a vertical moving component (53), and a cutting component (54).

9. A plasma laser cutting device for stainless steel plates according to claim 8, characterized in that, The longitudinal moving assembly (51) includes: a longitudinal guide plate (511), which is fixedly installed on the cutting platform (3); a longitudinal drive group (512), which is disposed on the outside of the longitudinal guide plate (511); and a longitudinal rack (513), which is fixedly installed on the longitudinal guide plate (511). The transverse moving assembly (52) includes: a transverse base plate (521), which is movably connected to the displacement beam (501); a transverse drive group (522), which is disposed on the transverse base plate (521); and a transverse rack. (523), the transverse rack (523) is fixedly connected to the displacement beam (501); the vertical moving assembly (53) includes: a vertical plate (531), the vertical plate (531) is fixedly connected to one side of the transverse base plate (521); an adjusting plate (532), the adjusting plate (532) is movably connected to one side of the vertical plate (531); a vertical motor (533), the vertical motor (533) is disposed on the top of the vertical plate (531); a lead screw (534), the lead screw (534) is fixedly connected to the bottom end of the drive shaft of the vertical motor (533); and a nut (535), the nut (535) is fixedly connected to the inside of the adjusting plate (532).

10. A plasma laser cutting device for stainless steel plates according to claim 9, characterized in that, The cutting assembly (54) includes: an equipment plate (541) movably connected to the outside of the adjusting plate (532); an assembly plate (542) fixedly connected to the outside of the equipment plate (541); a structural plate (544) fixedly connected to the outside of the assembly plate (542); a crossbar (545) disposed between two sets of the structural plates (544); and a conduit (547) disposed at the tail end of the penetrating agent nozzle (546).

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