Cutting platform and lifting device of laser cutting equipment

Abstract

The invention discloses a cutting platform and a lifting device of laser cutting equipment, and particularly relates to the technical field of laser cutting equipment.The cutting platform and the lifting device of the laser cutting equipment are characterized in that a butt-joint cutting platform which moves twice in the vertical direction is arranged, when the butt-joint cutting platform ascends for the first time, the upper surface of the lifting platform is attached to the lower surface of a plate, and the side edges of the plate are fixed through clamping push plates on the two sides; during secondary rising, the upper portion of the plate is clamped into the sealing frame and attached to the lower surface of the fixing table, a closed cutting space is formed, ash residues are prevented from remaining on the upper surface of the lifting table, and the lifting table can still keep the flatness of the supporting face after cutting of a current workpiece is completed; as the protective gas is continuously filled into the press-cutting groove, a stable protective atmosphere environment is formed in the press-cutting groove, a directional airflow layer distributed in the cutting direction is formed, a cutting area is located in the atmosphere guided by nitrogen, joint cutting oxidation is reduced, and the cutting quality is improved. The cutting section quality is improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, specifically to a cutting platform and lifting device for laser cutting equipment. Background Technology

[0002] Laser cutting equipment, as a widely used high-precision processing tool in the industrial processing field, typically processes various workpieces, including metal sheets, composite material sheets, and non-metallic thin sheets. To ensure the stability of the laser beam's focal position and the accuracy of the cutting path during the cutting process, the equipment is generally equipped with a cutting platform to support the workpiece and a lifting device to adjust the height of the workpiece relative to the laser head.

[0003] A search revealed that the invention patent with publication number CN119216829A discloses a laser cutting worktable for sheet metal processing. By improving the design of traditional laser cutting equipment, it adds a box and a liquid cooling system, which solves the problems of sparks and molten metal diffusion during laser cutting, and significantly improves cutting quality and the safety of the working environment.

[0004] However, laser cutting generates a large amount of metal slag, fumes, and molten slag deposits. Existing cutting platforms typically rely on manual cleaning or simple slag discharge structures for slag removal, making it difficult to efficiently and controllably remove the continuously generated molten slag during the cutting process. Because molten slag and ash easily accumulate in the cutting area and on the surface of the supporting platform, they not only easily cause blockages in the cutting platform but may also contaminate the cut surface, affecting cutting quality. Furthermore, residual molten slag can lead to uneven support surfaces when placing subsequent workpieces, thus affecting the stability and consistency of the subsequent cutting process. Based on these problems, there is an urgent need for a cutting platform structure that can effectively guide and collect ash during the cutting process and prevent molten slag residue from affecting the processing of subsequent workpieces. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting platform and lifting device for a laser cutting equipment to solve the problems mentioned in the background art.

[0006] The main technical problem solved by this invention is: Because molten slag and ash tend to accumulate in the cutting area and on the surface of the support platform, they can easily cause blockages in the cutting platform and contaminate the cut surface, affecting cutting quality. Furthermore, residual slag can lead to uneven support surfaces when subsequent workpieces are placed, thus affecting the stability and consistency of the subsequent cutting process.

[0007] This invention can be achieved through the following technical solutions: A cutting platform for a laser cutting device includes a base, a transmission unit for fixed-point conveying of multiple plates is installed at a U-shaped opening on the upper surface of the base, and a cutting chamber is provided in the middle of the upper surface of the base, and a pressure protection unit is fixed inside the cutting chamber. Inside the transmission unit and directly below the cutting chamber, there is a docking cutting platform that moves twice in the vertical direction. The docking cutting platform includes a lifting platform, and clamping push plates that simultaneously fix the two sides of the plate are slidably installed on both edges of the upper surface of the lifting platform. The inner wall of the clamping push plate is provided with several notches, and the upper surface of the lifting platform is provided with several cuts, which are arranged adjacent to the notches. The pressure protection unit includes a fixed platform. The lower surface of the fixed platform is provided for the plate to be snapped into the sealing frame after it rises. The upper surface of the fixed platform is provided with several pressure cutting grooves that cooperate with the corresponding cutting grooves. The lower part of the inner wall of the pressure cutting grooves diffuses outward. The interior of the fixed platform and the inner cavity of each pressure cutting groove are provided with a stable atmosphere unit filled with protective gas. A laser cutting head for transverse cutting of plates is slidably mounted longitudinally on the top of the inner cavity of the cutting chamber; During each ascent, the upper surface of the lifting platform is in contact with the lower surface of the plate, and the clamping push plate fixes the side of the plate. During the second ascent, the upper part of the plate is inserted into the sealing frame and fits against the lower surface of the fixed platform; The laser cutting head slides longitudinally to each cutting groove to perform transverse laser cutting on the sheet metal.

[0008] A further technical improvement of the present invention is that: the stable atmosphere unit includes an air blowing port provided on one side of the inner wall of each cutting groove, an exhaust channel provided on the other side of the inner wall of each cutting groove, multiple air blowing ports being connected to a gas cylinder through an air inlet manifold, and multiple exhaust channels being connected to the outside through an air outlet manifold.

[0009] A further technical improvement of the present invention is that: a ash storage box is provided inside the cavity of the lifting platform and located below the cutting channel, and a drive wheel is installed on the lower surface of the ash storage box; A linear guide rail is installed on the side of the U-shaped opening on the upper surface of the base near the conveying direction, and the drive wheel is tactilely connected to the linear guide rail. The lifting platform has a slot on the side facing the linear guide rail for the drive wheel to pass through.

[0010] A further technical improvement of the present invention is that: the transmission unit includes a conveyor belt disposed on the inner wall of the U-shaped opening of the base, and the conveyor belt is provided with a plurality of positioning strips for positioning the plate along the transmission direction; The displacement of the conveyor belt in each transmission is the distance between two adjacent positioning bars.

[0011] A further technical improvement of the present invention is that: a support rail is installed on the side of the cutting chamber away from the conveying direction, a slide block is slidably installed on the lower surface of the support rail, the upper end of the slide block is limited to slide with the rail groove on the bottom surface of the support rail, and a connecting frame is installed on the side of the slide block facing the cutting chamber, and an adsorption fixing unit is installed on the lower surface of the connecting frame. A conveyor belt is installed on the U-shaped opening on the upper surface of the base and inside the conveyor belt.

[0012] A further technical improvement of the present invention is that: the adsorption and fixing unit includes an electric push rod fixed on the lower end face of the connecting frame, the pushing end of the electric push rod is equipped with an adsorption frame, the adsorption frame is equipped with a positive and negative screw, and two sleeve blocks that move towards or away from the center at the same time are threaded onto the positive and negative screw, and a suction cup is installed on the bottom surface of the sleeve block; The upper surface of the adsorption frame is provided with a strip-shaped opening. The upper end of the sleeve is connected to a suction tube that communicates with the suction cup and slides within the strip-shaped opening. One end of the suction tube is connected to a flexible tube installed on the connecting frame, and the flexible tube is connected to a vacuum pump.

[0013] A further technical improvement of the present invention is that two screws with opposite thread directions are embedded in the middle of the inner cavity of the lifting platform, and each screw is threadedly connected to the corresponding clamping push plate.

[0014] A lifting device for a laser cutting equipment includes a segmented stroke cylinder embedded in a U-shaped opening on the upper surface of a base platform. The pushing end of the segmented stroke cylinder is fixed to the lower surface of the lifting platform, and a telescopic column extending into the base platform is installed on the lower surface of the lifting platform.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The vertically movable cutting platform is used for two-stage vertical movement. During the first ascent, the upper surface of the lifting platform is in contact with the lower surface of the workpiece, and the side clamping plates on both sides fix the side of the workpiece. During the second ascent, the upper part of the workpiece is inserted into the sealing frame and in contact with the lower surface of the fixed platform, forming a closed cutting space. This prevents slag from remaining on the upper surface of the lifting platform and ensures that the supporting surface remains flat after the current workpiece is cut. This prevents the cutting quality from being affected by uneven supporting surfaces when cutting the next workpiece. As protective gas is continuously injected into the pressure cutting groove, a stable protective atmosphere is formed inside the pressure cutting groove, and a directional airflow layer distributed along the cutting direction is formed on its inner wall. The cutting area is always in a nitrogen-dominated atmosphere, which reduces the degree of oxidation of the cut and improves the quality of the cut surface. The cutting area is continuously isolated and protected by gas, preventing air from entering the cutting area, improving the quality of the cut surface, and reducing the risk of oxidation and slag buildup. 2. By arranging the air inlets and exhaust channels opposite each other on both sides of the inner wall of the cutting groove, the protective gas forms a directional airflow channel from the air inlets to the exhaust channels inside the cutting groove. This keeps the gas inside the cutting groove in a continuous flow state. The directional flow of protective gas continuously washes the cutting area, effectively preventing outside air from entering the cutting position, reducing oxidation of the cutting surface, improving cutting quality, and reducing the probability of slag adhesion. 3. Under the action of gravity, the ash falls through the cutting channel and directly enters the ash storage box inside the lifting platform, reducing the splashing or stagnation of ash in the cutting area. After cutting, the lifting platform performs a vertical descent. The drive wheel is connected to the linear guide rail, so that the ash storage box always moves in a controlled manner along the predetermined trajectory to the end of the base, which facilitates the emptying of the ash storage box. 4. The lateral spacing of the suction cups on the bottom surfaces of the two sleeve blocks is adjusted synchronously, increasing the lateral spacing to accommodate the two end plates after cutting. Once the suction cups contact the plate surfaces, the vacuum pump is activated, drawing air into the suction cups through hoses and suction pipes, creating negative pressure adsorption between the suction cups and the plate surfaces. This reliably fixes the plates to their corresponding positions on the conveyor belt and the docking cutting platform. Next, the adsorbed plates are lifted. During this process, the two sleeve blocks move synchronously to a preset position towards the center of the adsorption frame under the action of the threads, causing the suction cups installed on the bottom surfaces of the sleeve blocks to adjust their lateral spacing synchronously, decreasing the lateral spacing. This adjustment allows the adsorption fixing unit to maintain stable adsorption of the already adsorbed plates while transferring them to the conveyor belt. The suction cups with reduced spacing then adsorb and fix the workpieces adjacent to the end plates on the lifting platform, achieving continuous adsorption and transfer between plates. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the lifting platform and the cutting chamber of the present invention. Figure 3 This is a schematic diagram of the installation structure of the fixing platform and sealing frame of the present invention; Figure 4 This is a three-dimensional structural diagram of the lifting platform of the present invention; Figure 5 This is a schematic diagram of the installation structure of the suction cup of the present invention; Figure 6 This is a schematic diagram of the installation structure of the ash storage box of the present invention.

[0018] In the diagram: 1. Base; 2. Cutting chamber; 3. Conveyor belt; 4. Linear guide rail; 5. Transmission belt; 6. Laser cutting head; 7. Fixed platform; 8. Cutting groove; 9. Sealing frame; 10. Slide; 11. Connecting frame; 12. Support rail; 13. Lifting platform; 14. Segmented stroke cylinder; 15. Clamping push plate; 16. Screw; 17. Air inlet; 18. Exhaust duct; 19. Notch; 20. Cutting track; 22. Electric actuator; 23. Strip opening; 24. Suction cup; 25. Positive and negative lead screws; 26. Hose; 27. Ash collection box; 28. Drive wheel; 29. ​​Positioning strip. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figures 1-6 As shown, the present invention provides a cutting platform for a laser cutting device, including a base 1. A transmission unit for fixed-point conveying of multiple plates is installed at the U-shaped opening on the upper surface of the base 1, and a cutting chamber 2 is provided in the middle of the upper surface of the base 1. A pressure protection unit is fixed inside the cutting chamber 2. Inside the transmission unit and directly below the cutting chamber 2, there is a docking cutting platform that moves twice in the vertical direction. The docking cutting platform includes a lifting platform 13. Both edges of the upper surface of the lifting platform 13 are slidably fitted with clamping push plates 15 that simultaneously fix the two sides of the plate. The inner wall of the clamping push plate 15 is provided with several notches 19, and the upper surface of the lifting platform 13 is provided with several cuts 20, which are arranged adjacent to the notches 19. The pressure protection unit includes a fixed platform 7. The lower surface of the fixed platform 7 is provided with a sealing frame 9 for the plate to be locked in after it rises. The upper surface of the fixed platform 7 is provided with a number of pressure cutting grooves 8 that cooperate with the corresponding cutting grooves 20. The lower part of the inner wall of the pressure cutting grooves 8 diffuses outward. The interior of the fixed platform 7 and the inner cavity of each pressure cutting groove 8 are provided with a stable atmosphere unit filled with protective gas. A laser cutting head 6 for transverse cutting of plates is slidably mounted longitudinally on the top of the inner cavity of the cutting chamber 2; During the first rise, the upper surface of the lifting platform 13 is in contact with the lower surface of the plate, and the clamping push plate 15 fixes the side of the plate. During the second ascent, the upper part of the plate is inserted into the sealing frame 9 and fits against the lower surface of the fixed platform 7; The laser cutting head 6 slides longitudinally to each cutting groove 8 to perform transverse laser cutting on the plate.

[0021] During operation, multiple plates are first transported sequentially to the lower position of the cutting chamber 2 by the transmission unit located at the U-shaped opening on the upper surface of the base 1 according to a predetermined pitch, and are aligned with the docking cutting platform.

[0022] Once the panel is in place, the docking and cutting platform begins its lifting and lowering motion.

[0023] During the first upward movement, the lifting platform 13 moves upward, so that the upper surface of the lifting platform 13 fits against the lower surface of the plate. At the same time, the clamping push plates 15 installed on both sides of the upper surface of the lifting platform 13 move inward under the limiting action of the transmission unit, clamping and fixing both sides of the plate at the same time, thereby limiting the horizontal displacement of the plate and completing the initial positioning and stable support of the plate.

[0024] Subsequently, the docking and cutting platform continues to perform a second upward movement. The lifting platform 13 drives the plate that has been clamped and fixed to move upward as a whole, breaking away from the positioning restriction of the transmission unit, so that the upper part of the plate enters the sealing frame 9 set below the fixed platform 7 and fits against the lower surface of the fixed platform 7, thereby forming a relatively closed cutting space above the plate.

[0025] In this state, the cutting groove 20 on the lifting platform 13 and the pressure cutting groove 8 correspondingly provided on the lower surface of the fixed platform 7 are aligned in the vertical direction, and the notch 19 provided on the inner wall of the clamping push plate 15 provides clearance space for the cutting area.

[0026] At the same time, the stable atmosphere unit inside the fixed stage 7 and corresponding to each cutting groove 8 continuously fills the cutting groove 8 with protective gas (nitrogen), so that a stable protective atmosphere environment is formed inside the cutting groove 8, and a directional airflow layer distributed along the cutting direction is formed on its inner wall. The cutting area is always in a nitrogen-dominated atmosphere, which reduces the degree of oxidation of the cut and improves the quality of the cut surface, and provides continuous gas isolation and protection for the cutting area.

[0027] After the plate completes its second ascent and is stably positioned, the laser cutting head 6, which is longitudinally slidably mounted on the top of the inner cavity of the cutting chamber 2, moves sequentially to the position directly above each cutting groove 8 and performs transverse laser cutting on the plate through the cutting groove 8.

[0028] During the cutting process, the plate remains stably positioned before and during cutting to prevent warping, displacement or vibration, thereby improving the precision of laser cutting. The cutting area forms a relatively enclosed space, and the stable atmosphere unit continuously supplies protective gas into the cutting groove 8, effectively preventing air from entering the cutting area, improving the quality of the cut surface, and reducing the risk of oxidation and slag buildup.

[0029] After all transverse cuts are completed, the docking cutting platform descends in the reverse direction, the clamping push plate 15 releases its grip on the plate, and the plate continues to be transported to the subsequent workstation by the transmission unit, thus completing a complete cutting operation process.

[0030] See Figure 2 and Figure 3 As shown, the stable atmosphere unit includes an air inlet 17 on one side of the inner wall of each cutting groove 8, and an exhaust duct 18 on the other side of the inner wall of each cutting groove 8. The multiple air inlets 17 are connected to the gas cylinder through the air inlet manifold, and the multiple exhaust ducts 18 are connected to the outside through the air outlet manifold.

[0031] Multiple air inlets 17 are connected to the gas cylinder through the main air inlet pipe, so that the protective gas is stably delivered to each pressure cutting groove 8 under uniform pressure conditions.

[0032] After the protective gas enters the cutting groove 8 through the air inlet 17, it diffuses along the length of the cutting groove 8 inside the groove and forms a continuously renewed protective atmosphere on the inner wall of the cutting groove 8 and near the cutting area. At the same time, the exhaust duct 18, located on the other side of the inner wall of the cutting groove 8, provides a gas release channel for the inside of the cutting groove 8. Under the action of pressure difference, the gas in the cutting groove 8 is discharged along the direction of the exhaust duct 18 and communicates with the external space through the exhaust manifold.

[0033] By arranging the air inlet 17 and exhaust channel 18 opposite each other on both sides of the inner wall of the cutting groove 8, the protective gas forms a directional airflow channel inside the cutting groove 8, pointing from the air inlet 17 to the exhaust channel 18. This keeps the gas inside the cutting groove 8 in a continuous flow state. The directional flow of protective gas continuously washes the cutting area, effectively preventing outside air from entering the cutting position, reducing oxidation of the cutting surface, improving cutting quality, and reducing the probability of slag adhesion.

[0034] During the transverse laser cutting of the plate by the laser cutting head 6, the cutting area is always in a stable protective atmosphere formed by the directional airflow. The high-temperature gas and dust generated during the cutting process are discharged along the exhaust duct 18 under the push of the protective gas, reducing interference to the cutting area.

[0035] See Figure 2 As shown, two screws 16 with opposite thread directions are embedded in the middle of the inner cavity of the lifting platform 13, and each screw 16 is threadedly connected to the corresponding clamping push plate 15.

[0036] The screw 16 drives the clamping push plates 15 on different sides to move. The two clamping push plates 15 move closer or further away at the same time. When they move closer, they clamp and limit the side of the plate.

[0037] See Figure 1 and Figure 6As shown, a dust storage box 27 is provided inside the lifting platform 13 and in the cavity below the cutting channel 20. A drive wheel 28 is installed on the lower surface of the dust storage box 27. A linear guide rail 4 is installed on the side of the U-shaped opening on the upper surface of the base 1 near the conveying direction, and the drive wheel 28 is rolledly connected to the linear guide rail 4. The lifting platform 13 has a slot on the side facing the linear guide rail 4 for the drive wheel 28 to pass through.

[0038] Ash storage box 27 is used to receive and collect ash and slag generated during laser cutting.

[0039] During the cutting process, the ash generated after the plate is cut by the laser cutting head 6 falls through the cutting channel 20 under the action of gravity and directly enters the ash storage box 27 inside the lifting platform 13, reducing the situation of ash splashing or lingering in the cutting area, which helps to keep the cutting area clean and avoids the accumulation of ash in the cutting area. Meanwhile, since the ash residue is collected in the ash storage box 27, it avoids the ash residue remaining on the upper surface of the lifting platform 13. This ensures that the lifting platform 13 can maintain the flatness of the support surface after the current workpiece is cut, thereby preventing the cutting quality from being affected by the uneven support surface when cutting the next workpiece.

[0040] The drive wheel 28 extends through a slot provided on one side of the lifting platform 13 toward the linear guide rail 4 and is rolledly connected to the linear guide rail 4 installed on the base 1, so that the ash storage box 27 always moves in a controlled manner along a predetermined trajectory to the end of the base 1, which facilitates the emptying of the ash storage box 27.

[0041] When the lifting platform 13 performs a vertical upward or downward movement, the drive wheel 28 moves synchronously until the cutting is completed, at which point the drive wheel 28 contacts the linear guide rail 4.

[0042] See Figure 1 As shown, the transmission unit includes a conveyor belt 3 disposed on the inner wall of the U-shaped opening of the base 1, and a plurality of positioning strips 29 for positioning the plate are disposed on the conveyor belt 3 along the transmission direction. The displacement of the conveyor belt 3 in each transmission is the distance between two adjacent positioning bars 29.

[0043] After the plate is placed on the conveyor belt 3, multiple positioning bars 29 spaced apart along the conveying direction of the conveyor belt 3 limit and position the plate, so that the plate always maintains its predetermined posture during the transmission process.

[0044] The conveyor belt 3 is driven according to a preset transmission rhythm. The displacement generated by each transmission is set to the distance between two adjacent positioning bars 29. In this working mode, after each transmission action is completed, the plate moves from the current positioning bar 29 to the position corresponding to the next positioning bar 29, thereby realizing the step-by-step movement of the plate in the conveying direction.

[0045] By matching the single transmission displacement of the conveyor belt 3 with the spacing of the positioning strips 29, the plate can stop at the predetermined position without additional detection or calibration during the conveying process, and maintain stable spatial alignment with the docking cutting platform in the cutting chamber 2 located below the conveying path, thus avoiding conveying errors and improving the positioning accuracy of the plate.

[0046] A support rail 12 is installed on the side of the cutting chamber 2 away from the conveying direction. A slide block 10 is slidably installed on the lower surface of the support rail 12. The upper end of the slide block 10 is limited to slide with the rail groove on the bottom surface of the support rail 12. A connecting frame 11 is installed on the side of the slide block 10 facing the cutting chamber 2. An adsorption and fixing unit is installed on the lower surface of the connecting frame 11. A U-shaped opening on the upper surface of the base 1 and a conveyor belt 5 are installed inside the conveyor belt 3.

[0047] After the cutting is completed, the lifting platform 13 moves down to the initial height, and then the slide block 10 slides along the rail groove on the bottom surface of the support rail 12 to limit the movement of the adsorption and fixing unit into the cutting chamber 2. When the adsorption and fixing unit moves above the plate and starts, it fixes the plate in a predetermined position above the conveyor belt 5 by negative pressure adsorption, thereby stabilizing and constraining the plate before and during the cutting process by the laser cutting head 6, preventing the plate from shifting or tilting during the cutting process, adsorbing and fixing the plate at different positions inside the cutting chamber 2 after cutting, and transferring the adsorbed plate to the conveyor belt 5.

[0048] See Figure 2 and Figure 5 As shown, the adsorption and fixing unit includes an electric push rod 22 fixed on the lower end face of the connecting frame 11. An adsorption frame is installed at the pushing end of the electric push rod 22. A positive and negative screw 25 is installed inside the adsorption frame. Two sleeves that move towards or away from the center at the same time are threaded onto the positive and negative screw 25. A suction cup 24 is installed on the bottom surface of the sleeve. The upper surface of the adsorption frame is provided with a strip-shaped opening 23. The upper end of the sleeve is connected to a suction tube that communicates with the suction cup 24 and slides within the strip-shaped opening 23. One end of the suction tube is connected to a flexible hose 26 installed on the connecting frame 11. The flexible hose 26 is connected to a vacuum pump.

[0049] When the plates are adsorbed and fixed, the positive and negative screws 25 are driven by the motor built into the adsorption frame. When they rotate, the two sleeves move away from the center of the adsorption frame in sync under the action of the screws, thereby driving the suction cups 24 installed on the bottom surface of the sleeves to adjust the lateral spacing in sync. At this time, the lateral spacing becomes larger to accommodate the two plates at the very end after cutting. The suction tube slides in the strip opening 23 as the sleeves move laterally.

[0050] Then, the electric actuator 22 is activated, which drives the suction cup to move downward in the vertical direction, so that the suction cup 24 gradually approaches the surface of the board.

[0051] When the suction cup 24 comes into contact with the surface of the plate, the vacuum pump starts and draws air into the suction cup 24 through the hose 26 and the suction pipe, so that the suction cup 24 and the surface of the plate form a negative pressure adsorption, thereby reliably fixing the plate to the corresponding position of the conveyor belt 5 and the docking cutting platform. During the cutting process, the adsorption and fixing unit maintains a negative pressure state, which plays a stable constraint role on the plate. Next, the adsorbed plate is lifted. During this process, the two sleeve blocks move synchronously to the center of the adsorption frame under the action of the threads, which drives the suction cups 24 installed on the bottom surface of the sleeve blocks to adjust the lateral spacing synchronously. At this time, the lateral spacing becomes smaller. Through this lateral spacing adjustment, the adsorption fixing unit can transfer the adsorbed plate to the conveyor belt 5 while maintaining stable adsorption of the adsorbed plate. The suction cups 24 with the reduced spacing adsorb the workpieces adjacent to the end plate on the lifting platform 13 to adsorb and fix them, so as to realize continuous adsorption and transfer between the plates.

[0052] See Figure 2 As shown, a lifting device for a laser cutting equipment includes a segmented stroke cylinder 14 embedded in a U-shaped opening on the upper surface of a base 1. The pushing end of the segmented stroke cylinder 14 is fixed to the lower surface of a lifting platform 13, and a telescopic column extending into the base 1 is installed on the lower surface of the lifting platform 13.

[0053] When initial support and positioning of the plate is required, the segmented stroke cylinder 14 first outputs the first stroke segment, pushing the lifting platform 13 to rise to the first height position, so that the lifting platform 13 fits against the lower surface of the plate, completing the initial support and alignment of the plate.

[0054] Subsequently, the segmented stroke cylinder 14 continues to output the second stroke segment, pushing the lifting platform 13 to rise further to the height position for introducing the cutting station, so as to meet the installation requirements of the plate entering the upper pressing, sealing or cutting structure.

[0055] During the lifting process of the lifting platform 13, the telescopic column installed on its lower surface moves synchronously with the lifting platform 13 and extends into the base 1 to form a guiding fit with the base 1, thereby constraining the movement posture of the lifting platform 13, avoiding deviation or shaking during the lifting process, and ensuring the stability and repeatability of the lifting movement.

[0056] After cutting is completed, the segmented stroke cylinder 14 reverses its movement, driving the lifting platform 13 to descend in stages according to the preset stroke sequence, so that the plate can be smoothly removed from the cutting area and enter the subsequent conveying or unloading state.

[0057] In use, this invention utilizes a vertically movable cutting platform. During the first ascent, the upper surface of the lifting platform 13 is in contact with the lower surface of the workpiece, and the sides of the workpiece are fixed by the clamping push plates 15 on both sides. During the second ascent, the upper part of the workpiece is inserted into the sealing frame 9 and in contact with the lower surface of the fixing platform 7, forming a closed cutting space. This prevents ash and slag from remaining on the upper surface of the lifting platform 13, ensuring that the lifting platform 13 can maintain the flatness of the supporting surface after completing the cutting of the current workpiece. This prevents the cutting quality from being affected by uneven supporting surfaces when cutting the next workpiece. As protective gas is continuously injected into the pressure cutting groove 8, a stable protective atmosphere is formed inside the pressure cutting groove 8, and a directional airflow layer distributed along the cutting direction is formed on its inner wall. The cutting area is always in a nitrogen-dominated atmosphere, reducing the degree of oxidation of the cut and improving the quality of the cut surface. This provides continuous gas isolation and protection for the cutting area, preventing air from entering the cutting area, improving the quality of the cut surface, and reducing the risk of oxidation and slag buildup. By arranging the air inlet 17 and the exhaust channel 18 opposite each other on both sides of the inner wall of the cutting groove 8, the protective gas forms a directional airflow channel inside the cutting groove 8 from the air inlet 17 to the exhaust channel 18, so that the gas inside the cutting groove 8 is in a continuous flow state. The directional flow of protective gas continuously washes the cutting area, effectively preventing outside air from entering the cutting position, reducing the oxidation phenomenon of the cutting surface, improving the cutting quality, and reducing the probability of slag adhesion. Under the action of gravity, the ash falls through the cutting channel 20 and directly enters the ash storage box 27 inside the lifting platform 13, reducing the splashing or stagnation of ash in the cutting area. After cutting, the lifting platform 13 performs a vertical descent. The drive wheel 28 is rolled and connected to the linear guide rail 4, so that the ash storage box 27 always moves in a controlled manner along a predetermined trajectory to the end of the base 1, which facilitates the emptying of the ash storage box 27. The lateral spacing of the suction cups 24 on the bottom surface of the two sleeve blocks is adjusted synchronously, increasing the lateral spacing to accommodate the two end plates after cutting. When the suction cups 24 contact the plate surface, the vacuum pump is activated, drawing air into the suction cups 24 through the hose 26 and suction pipe, creating a negative pressure adsorption between the suction cups 24 and the plate surface, thus reliably fixing the plate to the corresponding position on the conveyor belt 5 and the docking cutting platform. Next, the adsorbed plate is lifted. During this process, the two sleeve blocks move synchronously to the center of the adsorption frame under the action of the threads, causing the suction cups 24 installed on the bottom surface of the sleeve blocks to adjust the lateral spacing synchronously, decreasing the lateral spacing. Through this lateral spacing adjustment, the adsorption fixing unit can transfer the adsorbed plate to the conveyor belt 5 while maintaining stable adsorption of the adsorbed plate. The suction cups 24 with reduced spacing are then used to adsorb and fix the workpieces adjacent to the end plates on the lifting platform 13, realizing continuous adsorption and transfer between plates.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cutting table of a laser cutting apparatus comprising a base (1), characterized in that: The U-shaped opening of the upper surface of the base (1) is provided with a transmission unit for positioning and conveying a plurality of plate members, and the middle of the upper surface of the base (1) is provided with a cutting chamber (2), and the inside of the cutting chamber (2) is fixedly provided with a pressing protection unit; The inside of the transmission unit and directly below the cutting chamber (2) is provided with a docking cutting platform which moves in the vertical direction, and the docking cutting platform comprises a lifting platform (13), and the two edges of the upper surface of the lifting platform (13) are slidably provided with clamping push plates (15) for fixing the two sides of the plate member; The inner wall surface of the clamping push plate (15) is provided with a plurality of notches (19), and the upper surface of the lifting platform (13) is provided with a plurality of cutting channels (20), and the cutting channels (20) are arranged adjacent to the notches (19); The pressing protection unit comprises a fixed table (7), and the lower surface of the fixed table (7) is provided with a sealing frame (9) for clamping the plate member after rising, and the upper surface of the fixed table (7) is provided with a plurality of pressure cutting grooves (8) which are used in cooperation with the corresponding cutting channels (20), and the inner wall of the pressure cutting groove (8) is outwardly diffused at the lower part, and the inside of the fixed table (7) and the inner cavity corresponding to each pressure cutting groove (8) are provided with a stable atmosphere unit for filling protective gas; The inner cavity of the cutting chamber (2) is slidably provided with a laser cutting head (6) for transverse cutting of the plate member along the longitudinal direction at the top; When rising for the first time, the upper surface of the lifting platform (13) is attached to the lower surface of the plate member, and the clamping push plate (15) fixes the side edges of the plate member; When rising for the second time, the upper part of the plate member is clamped into the sealing frame (9) and attached to the lower surface of the fixed table (7); The laser cutting head (6) is sequentially longitudinally slid to each pressure cutting groove (8) for transverse laser cutting of the plate member.

2. A cutting table for a laser cutting apparatus as claimed in claim 1, wherein, The stable atmosphere unit comprises a gas blowing port (17) arranged on one side of the inner wall of each pressure cutting groove (8), and the other side of the inner wall of each pressure cutting groove (8) is provided with an exhaust channel (18), a plurality of gas blowing ports (17) are connected with a gas cylinder through a gas inlet main pipe, and a plurality of exhaust channels (18) are communicated with the outside through a gas outlet main pipe.

3. The cutting table of a laser cutting apparatus according to claim 1, wherein, The inside of the lifting platform (13) and the cavity below the cutting channel (20) are provided with a dust storage box (27), and the lower surface of the dust storage box (27) is provided with a driving wheel (28); The U-shaped opening of the upper surface of the base (1) is provided with a linear guide rail (4) on one side close to the conveying direction, and the driving wheel (28) is in rolling connection with the linear guide rail (4); The side of the lifting platform (13) facing the linear guide rail (4) is provided with a slot for the driving wheel (28) to pass through.

4. The cutting table of a laser cutting apparatus according to claim 1, wherein, The transmission unit comprises a conveying strip (3) arranged on the inner wall of the U-shaped opening of the base (1), and a plurality of positioning strips (29) for positioning the plate member are arranged on the conveying strip (3) along the transmission direction; The displacement of the conveying strip (3) in each transmission is the distance between two adjacent positioning strips (29).

5. The cutting table of a laser cutting apparatus according to claim 1, wherein, The support rail (12) is installed on the side of the cutting chamber (2) away from the conveying direction, the lower surface of the support rail (12) is slidably installed with a sliding seat (10), the upper end of the sliding seat (10) is limitedly slid with the rail groove of the bottom surface of the support rail (12), and the side of the sliding seat (10) facing the cutting chamber (2) is installed with a connecting frame (11), and the lower surface of the connecting frame (11) is installed with an adsorption fixing unit. The U-shaped opening on the upper surface of the base (1) and located on the inner side of the conveying strip (3) is installed with a conveying belt (5).

6. The cutting table of a laser cutting apparatus according to claim 1, wherein, The adsorption fixing unit comprises an electric push rod (22) fixed on the lower end face of the connecting frame (11), the pushing end of the electric push rod (22) is installed with an adsorption frame, the adsorption frame is installed with a forward and reverse screw (25) inside, the forward and reverse screw (25) is threadedly sleeved with two sleeve blocks simultaneously approaching or moving away from the middle part, and the bottom surface of the sleeve block is installed with a suction disc (24). The upper surface of the adsorption frame is provided with a strip-shaped opening (23), the upper end of the sleeve block is connected with a suction pipe communicated with the suction disc (24) and slidably arranged in the strip-shaped opening (23), one end of the suction pipe is connected with a hose (26) installed on the connecting frame (11), and the hose (26) is connected with a vacuum pump.

7. The cutting table of a laser cutting apparatus according to claim 1, wherein, The inner cavity of the lifting platform (13) is embeddedly installed with two screw rods (16) with opposite screw directions, and each screw rod (16) is threadedly connected with a corresponding clamping push plate (15).

8. A lifting device of a laser cutting apparatus, characterized by, The lifting device is installed on the cutting platform of the laser cutting equipment of claims 1-7, the lifting device comprises a segmented stroke air cylinder (14) embedded in the U-shaped opening on the upper surface of the base (1), the pushing end of the segmented stroke air cylinder (14) is fixed with the lower surface of the lifting platform (13), and the lower surface of the lifting platform (13) is installed with a telescopic column extending into the base (1).

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