Prefabricated metal plate laser cutting device for building construction and using method of prefabricated metal plate laser cutting device

The laser cutting device for prefabricated metal sheets, which features multi-point flexible clamping and precise positioning, solves the problem of difficult-to-control clamping force in existing devices, achieving high-precision cutting and convenient unloading, thus improving construction quality and efficiency.

CN122033472APending Publication Date: 2026-05-15ZHUOYUAN (XIANNING) CONSTRUCTION STEEL PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUOYUAN (XIANNING) CONSTRUCTION STEEL PRODUCTS CO LTD
Filing Date
2026-03-20
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing laser cutting devices for prefabricated metal panels used in building construction have difficulty accurately controlling the clamping force during the clamping process, resulting in deformation of the panel surface, warping of the edges, low positioning accuracy, and dimensional deviations of the cut panels exceeding construction standards. In addition, the panels are easily scratched during unloading, affecting subsequent building assembly and use.

Method used

Employing a multi-point flexible clamping structure, the combination of a moving platform, an electric telescopic rod, a linkage mechanism, and a cleaning mechanism enables precise positioning and uniform clamping of metal sheets. Combined with a transmission system of a moving screw and bevel gears, it ensures the stability and accuracy of the sheet during cutting and unloading, and the cleaning mechanism removes cutting debris.

Benefits of technology

It improves the positioning accuracy and dimensional accuracy of sheet metal cutting, avoids deformation and displacement of the sheet metal during the cutting process, simplifies the unloading operation, and ensures the integrity of the sheet metal edges and the quality of the cut surface.

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Abstract

The invention discloses a prefabricated metal plate laser cutting device for building construction and a using method of the prefabricated metal plate laser cutting device, and belongs to the technical field of plate cutting. The prefabricated metal plate laser cutting device is provided with a movable platen, an electric telescopic rod, a linkage strip, a movable push plate, a push chute, a push convex block, a top plate and a push plate; meanwhile, when the movable table plate moves back and forth on the surface of a movable screw rod along with a movable screw sleeve, a wave-shaped pushing strip is driven to synchronously slide between two supporting plates, and when the wave-shaped pushing strip is tightly attached to a pushing rolling wheel, the metal plate is pushed to move upwards to be away from the movable table plate; a pushing roller pushes a movable sliding seat to slide on the surface of a guide sliding rod along with a wave-shaped track of a wave-shaped pushing strip, a third reset spring is extruded to deform, the movable sliding seat is jacked up under the springback effect of the third reset spring, and a cleaning brush is pushed to clean the surface of a metal plate clamped and fixed to the top of a movable platen.
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Description

Technical Field

[0001] This invention relates to the field of sheet metal cutting technology, specifically to a laser cutting device for prefabricated metal sheets used in building construction and its application method. Background Technology

[0002] With the rapid popularization of prefabricated buildings and steel structure construction, prefabricated metal panels have become core components of building envelopes, structural frames, and decorative panels. Their processing accuracy, forming efficiency, and on-site adaptability directly affect construction quality and schedule. Laser cutting, with its advantages of narrow kerf, small heat-affected zone, smooth cut, and strong flexible processing capabilities, is gradually replacing flame cutting, plasma cutting, and mechanical shearing, becoming the mainstream process for high-precision cutting of prefabricated metal panels.

[0003] Existing laser cutting equipment for precast metal sheets used in building construction often employs a single-point or single-sided rigid clamping structure when cutting precast metal sheets. This makes it difficult to precisely control the clamping force, which can easily cause surface deformation and edge warping of the sheet. The sheet is also prone to displacement during clamping, significantly reducing the positioning accuracy during laser cutting. This results in dimensional deviations of the cut sheet exceeding construction standards, affecting subsequent building assembly and use. Furthermore, after cutting, the metal sheet adheres tightly to the table surface due to its own weight, requiring manual prying with tools such as crowbars to unload the sheet. This prying process can easily scratch the cut surface and damage the edges of the sheet.

[0004] Based on this, the present invention designs a laser cutting device for prefabricated metal sheets used in building construction and its usage method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting device for precast metal sheets used in building construction and its method of use, in order to solve the problems mentioned in the background art. Existing laser cutting devices for precast metal sheets used in building construction often use a single-point or single-sided rigid clamping structure when cutting precast metal sheets. The clamping force is difficult to control precisely, which can easily cause deformation of the sheet surface and warping of the edges. The sheet is also prone to displacement during clamping, which greatly reduces the positioning accuracy during laser cutting. This results in the dimensional deviation of the cut sheet exceeding the construction standard, affecting subsequent building assembly and use. At the same time, after the metal sheet is cut, it is tightly attached to the surface of the table due to its own weight, and the sheet needs to be manually pried with tools such as pry bars to complete the unloading. Moreover, the prying process can easily scratch the cut surface of the sheet and damage the edges of the sheet.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A laser cutting device for precast metal sheets used in building construction includes a processing table. A movable laser cutting mechanism is bolted to one side of the top of the processing table. A movable table plate is located at the center of the bottom of the processing table, and a movable screw sleeve is fixedly installed at the center of the bottom of the movable table plate. A linkage mechanism is symmetrically arranged on both sides of the movable screw sleeve at the bottom of the movable table plate. A lifting mechanism is symmetrically arranged on both sides of the movable screw sleeve at the bottom of the movable table plate. Three movable guide clamping mechanisms are equidistantly arranged on both sides of the top of the movable table plate. A cleaning mechanism is fixedly installed on one side of the top of the processing table located on the movable laser cutting mechanism.

[0008] As a further embodiment of the present invention, the processing table includes a base frame, an installation frame is fixedly installed on one side of the top of the base frame, and the movable laser cutting mechanism is fixedly connected to the inside of the installation frame by bolts. A movable screw is rotatably installed between the central positions of the two sides inside the base frame via bearings. A movable motor is fixedly installed at the central position of the bottom of one side of the installation frame, and bevel gears are fixedly installed at the output end of the movable motor and the end of the movable screw near the movable motor, and the two bevel gears mesh with each other. The two sides of the inner wall of the base frame are symmetrically provided with movable limiting grooves.

[0009] As a further embodiment of the present invention, a limiting block is fixedly installed at the center of one side of the top of the movable platform. A rectangular mounting groove 1 is symmetrically provided through the top of the movable platform. Three rectangular mounting grooves 2 are respectively provided through the top of the movable platform on the side of the two rectangular mounting grooves 1 that are far apart from each other. The movable guide clamping mechanism is slidably connected inside the rectangular mounting grooves 2. The inner wall of the rectangular mounting grooves 2 is symmetrically provided with guide limiting grooves. Multiple limiting sliders are fixedly installed at equal intervals on both sides of the movable platform. The limiting sliders are slidably connected inside the movable limiting grooves.

[0010] As a further embodiment of the present invention, the movable screw sleeve is fixedly connected to the center position between the two rectangular mounting slots at the bottom of the movable platform, and the movable screw sleeve is threadedly connected to the thread on the surface of the movable screw. An mounting block is fixedly installed at the center position of the bottom of the movable screw sleeve, an electric telescopic rod is fixedly installed on one side of the bottom of the mounting block, a fixing plate is fixedly installed at the center position of the bottom of the mounting block, and a limiting slide rod is symmetrically and slidably installed on both sides of the fixing plate. A rectangular frame is fixedly installed at the telescopic end of the electric telescopic rod, and the inner wall of the rectangular frame is fixedly connected to both ends of the limiting slide rod. A return spring is sleeved on the surface of the limiting slide rod located on one side of the fixing plate, and connecting columns are fixedly installed at both ends of both sides of the rectangular frame.

[0011] As a further embodiment of the present invention, the linkage mechanism includes a movable push plate, a concave slide bracket symmetrically and slidably installed on the bottom of the movable push plate, and the two ends of the concave slide bracket are fixedly connected to the bottom of the movable platform through the movable push plate. The movable push plate is provided with three push oblique grooves at equal intervals, and the push oblique grooves correspond to the positions of the rectangular mounting grooves. Three push slide columns are fixedly installed on the side of the movable push plate near the movable screw sleeve. A connecting strip is fixedly installed between the two ends of the three push slide columns on the same side. A linkage strip is symmetrically fixedly installed on the side of one of the connecting strips away from the push slide column, and the linkage strip is fixedly connected to the connecting column.

[0012] As a further embodiment of the present invention, the lifting mechanism includes a top plate, three push plates are fixedly installed at equal intervals on the bottom of the top plate, and three push grooves are provided at equal intervals on the push plates. Each push groove is composed of a section of inclined groove and a horizontal through groove. The push grooves of the three push plates slide on the surface of the corresponding push slide column. Two mounting rods are symmetrically fixedly installed at both ends of the bottom of the top plate. A second fixing plate is slidably installed through the surface of two mounting rods, and the second fixing plate is fixedly connected to both ends inside the rectangular mounting groove. The bottom ends of the two mounting rods pass through the second fixing plate and are fixedly connected to a connecting end plate. A second return spring is sleeved on the surface of the mounting rod located between the second fixing plate and the connecting end plate.

[0013] As a further embodiment of the present invention, the movable guide clamping mechanism includes a movable slider, which is slidably connected to the inside of a rectangular mounting groove. A pushing protrusion is fixedly installed at the bottom of the movable slider and is slidably connected to a pushing inclined groove. Limiting protrusions are fixedly installed on both sides of the movable slider and are slidably connected to the inside of a guide limiting groove. A mounting frame is fixedly installed at the top of the movable slider and slides close to the top of the movable platform. Rectangular through grooves are symmetrically provided on both sides of the mounting frame. Limiting slide rods are symmetrically fixedly installed on the inner walls of the rectangular through grooves. Movable plates are slidably installed on the surfaces of the two limiting slide rods. A lifting spring is sleeved on the surface of the limiting slide rod on one side of the movable plate.

[0014] As a further embodiment of the present invention, a mounting base one is fixedly installed on one side of the movable plate, a top frame is rotatably installed inside the mounting base one, and a mounting base two is rotatably installed on the end of the top frame away from the mounting base one via a rotating shaft. Clamping plates are fixedly installed on the sides of the two mounting base two away from the mounting frame. A rotating sleeve is movably sleeved at the center position of the rotating shaft surface of the mounting base two. A positioning slide rod is fixedly installed on the surface of the rotating sleeve, and the end of the positioning slide rod away from the rotating sleeve is slidably connected to both sides of the mounting frame. Limiting plates are fixedly installed on the inner surfaces of the rotating sleeve on both sides of the mounting frame, and lifting springs two are sleeved on the inner surfaces of the rotating sleeve on both sides of the mounting frame. The lifting springs two are located on one side of the limiting plates.

[0015] As a further embodiment of the present invention, the cleaning mechanism includes two support plates, which are fixedly positioned relative to each other on the top of the base frame at the center of one side of the mounting frame. Guide slide rods are symmetrically fixed between the two support plates, and movable slide blocks are symmetrically slidably mounted through both ends of the two guide slide rods. Return springs are respectively sleeved on the sides of the two movable slide blocks that are far apart from each other at both ends of the guide slide rods. A cleaning brush is fixedly mounted at the bottom between the two movable slide blocks. Push rollers are rotatably mounted on the bottom of the movable slide blocks via a rotating shaft. Wave-shaped push strips are symmetrically fixed on both sides of the top of the movable platform, and the positions of the wave-shaped push strips correspond to those of the push rollers.

[0016] A method of using a laser cutting device for prefabricated metal sheets in building construction, the method comprising the following steps: Place the prefabricated metal sheet to be cut on top of the moving platform, ensuring it adheres tightly to the limiting blocks on the platform. This initial positioning of the sheet lays the foundation for subsequent clamping and fixing. Activate the electric telescopic rod at the bottom of the moving screw sleeve. Control the telescopic end of the electric telescopic rod to push the rectangular frame along the limiting slide rod one in a horizontal linear motion. The rectangular frame, through the connecting column, drives the linkage bar of the linkage mechanism to move synchronously, thereby pulling the moving push plate to slide horizontally within the concave slide. The pushing groove on the surface of the moving push plate and the pushing protrusion create a sliding engagement, pushing the moving slider to move linearly within the rectangular mounting groove two of the moving platform. The moving slider drives... The top mounting bracket is close to the metal sheet. When the clamping plate on the mounting bracket contacts the edge of the sheet, the sheet exerts a reverse compressive force on the clamping plate, causing the top bracket to rotate between mounting seat one and mounting seat two. The top bracket pushes the moving plate to slide along the limiting slide rod two and compresses the lifting spring one. The reverse elastic force of the lifting spring one is transmitted to the clamping plate through the feedback of the top bracket, making the clamping plate tightly adhere to the surface of the sheet. At the same time, the clamping plate pushes the positioning slide rod to slide inside the two sides of the mounting bracket, causing the limiting plate to squeeze the lifting spring two. Its rebound force assists the clamping plate to adhere tightly to the sheet, realizing multi-point uniform and flexible clamping of the metal sheet and avoiding deformation or displacement of the sheet. After the sheet metal is clamped and fixed, the moving motor of the processing table is started. The bevel gear at its output end meshes with the bevel gear at the end of the moving screw, driving the moving screw to rotate in the base frame. The moving screw sleeve, which is threadedly connected to the moving screw, drives the moving table to move horizontally and linearly along the moving screw. After passing through the sliding guide of the limiting sliders on both sides of the moving table along the moving limiting groove, the moving table accurately transfers the metal sheet to the designated position at the bottom of the moving laser cutting mechanism. The moving laser cutting mechanism is then started to complete the laser cutting operation on the metal sheet. After the sheet metal is cut, the moving motor reverses, causing the moving screw sleeve to move the moving table away from the moving laser cutting mechanism on the surface of the moving screw. The moving table moves the wave-shaped push bar between the two support plates and presses it against the push roller, causing the push roller to slide along the wave trajectory of the wave-shaped push bar. This pushes and lifts the moving slide block, which slides and compresses the return spring three at both ends of the guide slide rod. Under the rebound action of the return spring three, the moving slide block slides back and forth in a straight line on the surface of the guide slide rod, causing the cleaning brush to move back and forth on the surface of the metal sheet to clean up the debris generated during the cutting of the metal sheet. After the moving table moves away from the laser cutting mechanism to the designated unloading position, the electric telescopic rod extends in the opposite direction, causing the rectangular frame to return to its original position along the limit slide bar. The reset spring assists in the frame's reset, and simultaneously, the connecting column pulls the moving push plate in the opposite direction via the linkage bar. This causes the push chute and push protrusion to engage, moving the sliding block away from the metal sheet. The clamping plate simultaneously releases its fixation on the sheet. During the reverse sliding of the moving push plate, the push column on one side slides from the horizontal through groove of the push chute to the inclined groove section. Under the guidance of the inclined groove, the push column generates an upward pushing force on the push plate, causing the top plate to move upward. The slide bar installed at the bottom of the top plate slides along the fixed plate and presses the reset spring. The top plate contacts the bottom of the cut metal sheet and lifts it up, creating a gap between the sheet and the surface of the moving table, making it easy for the operator to directly pick up the sheet and complete the unloading. After unloading, the electric telescopic rod moves again, and the push column slides back to the horizontal through groove of the push chute. Under the rebound action of the reset spring, the top plate resets downward to the initial position, completing one cutting cycle, and the next sheet can be cut.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a movable platform, an electric telescopic rod, a linkage bar, a movable push plate, a pushing groove, a pushing protrusion, a top plate, and a pushing plate, allows the metal sheet to be placed on top of the movable platform. The electric telescopic rod is then controlled to extend and retract, pushing the rectangular frame at its end to move horizontally along a limiting slide bar. The connecting column drives the linkage bar to control the movable push plate to slide within two concave slide frames, causing the pushing groove on the surface of the movable push plate to slide on the surface of the pushing protrusion. This pushes the movable slider to move linearly within a rectangular mounting groove, clamping and fixing the metal sheet. Then, the movable motor is started, and the bevel gear at the output end meshes with the bevel gear at the end of the movable screw, driving the movable screw. This causes the movable platform, along with the movable screw sleeve, to move to the bottom of the movable laser cutting mechanism for cutting. After cutting, the metal sheet moves away from the movable laser cutting mechanism along with the movable platform. After the light cutting mechanism, the electric telescopic rod is extended and retracted, and the moving push plate pushes the push protrusion away from the metal plate to release it. At the same time, the rectangular frame drives the push slide column and the moving push plate to reset, so that the push slide column slides from the horizontal slide groove to the inclined groove, and lifts the push plate to move up. This makes the top plate lift the metal plate to move up away from the moving table to facilitate the picking and unloading of the metal plate. At the same time, when the moving table moves back and forth on the surface of the moving screw with the moving screw sleeve, it drives the wave-shaped push bar to slide synchronously between the two support plates. When the wave-shaped push bar is close to the push roller, the push roller pushes the moving slide block to slide on the surface of the guide slide bar along the wave-shaped track of the wave-shaped push bar, squeezing the return spring three to deform. Under the rebound action of the return spring three, the moving slide block is lifted, and the cleaning brush is pushed to clean the surface of the metal plate clamped and fixed on the top of the moving table. 2. This invention, through the configuration of a movable slider, a top frame, a first lifting spring, a movable plate, a positioning slide rod, and a second lifting spring, allows the movable slider to slide until the clamping plate contacts the metal sheet. The metal sheet then exerts a reverse compressive force on the clamping plate, which is transmitted to the second mounting base fixed to the clamping plate. This force causes the top frame to rotate between the first and second mounting bases. As the top frame rotates, it pushes the movable plate along the second limiting slide rod, simultaneously compressing the first lifting spring. The reverse elastic force generated by the first lifting spring is fed back to the clamping plate through the movable plate and the top frame, ensuring the clamping plate is tightly attached to the surface of the metal sheet. This achieves multi-point, uniform, and flexible clamping of the metal sheet, preventing displacement and warping during laser cutting and ensuring cutting accuracy. Simultaneously, when the clamping plate approaches the mounting frame, it pushes the positioning slide rod to slide on both sides of the mounting frame, causing the limiting plate to deform by compressing the second lifting spring. The rebound of the second lifting spring further pushes the clamping plate tightly against the edge of the metal sheet for clamping and fixing. The positioning slide rod limits the clamping plate, ensuring that it does not tilt or deflect when clamping the metal sheet. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the base frame and mounting frame of the present invention; Figure 4 This is a schematic diagram of the moving platform and lifting mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the movable platform and the limiting block of the present invention; Figure 6 This is a schematic diagram of the structure of the movable screw sleeve and the movable push plate of the present invention; Figure 7 This is a schematic diagram of the movable screw sleeve and rectangular frame of the present invention; Figure 8 This is a schematic diagram of the structure of the movable push plate and the movable guide clamping mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the top plate and the push plate of the present invention; Figure 10 This is a cross-sectional view of the movable slider and mounting bracket of the present invention; Figure 11 This is a cross-sectional structural diagram of the top frame and positioning slide rod of the present invention; Figure 12 This is a schematic diagram of the movable slide and guide slide of the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Processing table; 101. Base frame; 102. Mounting frame; 103. Moving screw; 104. Moving limit slide; 105. Moving motor; 106. Bevel gear; 2. Moving laser cutting mechanism; 3. Moving table; 301. Limiting block; 302. Rectangular mounting slot one; 303. Rectangular mounting slot two; 304. Guide limit slide; 305. Limiting slider; 4. Moving screw sleeve; 401. Mounting block; 402. Electric telescopic rod; 403. Fixing plate one; 404. Rectangular frame; 405. Limiting slide one; 406. Return spring one; 407. Connecting column; 5. Linkage mechanism; 501. Moving push plate; 502. Concave slide; 503. Pushing sloping groove; 504. Pushing slide column; 505. Connecting bar; 506. Linkage bar; 6. Lifting mechanism; 601. Top plate; 6 02. Push plate; 603. Push chute; 604. Mounting slide bar; 605. Fixing plate two; 606. Connecting end plate; 607. Reset spring two; 7. Moving guide clamping mechanism; 701. Moving slider; 702. Pushing protrusion; 703. Limiting protrusion; 704. Mounting bracket; 705. Rectangular through groove; 706. Limiting slide bar two; 707. Moving plate; 708. Lifting spring one; 709. Mounting seat one; 710. Top frame; 711. Mounting seat two; 712. Rotating sleeve; 713. Positioning slide bar; 714. Limiting plate; 715. Lifting spring two; 716. Clamping plate; 8. Cleaning mechanism; 801. Support plate; 802. Guide slide bar; 803. Moving slide seat; 804. Reset spring three; 805. Cleaning brush; 806. Push roller; 807. Wave-shaped push bar. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-12 The present invention provides a technical solution:

[0024] A laser cutting device for prefabricated metal sheets used in building construction includes a processing table 1. A movable laser cutting mechanism 2 is bolted to one side of the top of the processing table 1. A movable table 3 is located at the center of the bottom of the processing table 1, and a movable screw sleeve 4 is fixedly installed at the center of the bottom of the movable table 3. A linkage mechanism 5 is symmetrically arranged on both sides of the movable screw sleeve 4 at the bottom of the movable table 3. A lifting mechanism 6 is symmetrically arranged on both sides of the movable screw sleeve 4 at the bottom of the movable table 3. Three movable guide clamping mechanisms 7 are equidistantly arranged on both sides of the top of the movable table 3. A cleaning mechanism 8 is fixedly installed on one side of the top of the processing table 1, located on the movable laser cutting mechanism 2.

[0025] During operation, the mobile laser cutting mechanism 2 is fixedly installed inside the mounting frame 102 of the processing table 1. It consists of four parts: an X-axis moving module, a Y-axis moving module, a laser cutting head assembly, and an electronically controlled drive assembly. It performs horizontal position adjustment to adapt to the processing needs of prefabricated metal sheets of different specifications and cutting trajectories. The electronically controlled drive assembly drives the X-axis and Y-axis moving modules to control the position of the laser cutting head assembly on the top of the metal sheet. After the laser cutting head assembly moves to the cutting position, it starts to precisely cut the metal sheet. The metal sheet to be cut is moved to the top of the mobile table 3 and pressed against the top of the two lifting mechanisms 6. Then, the linkage mechanism 5 drives the lifting mechanism 6 and the moving guide clamping mechanism 7 to move synchronously, causing the lifting mechanism 6 to move downwards until the metal sheet is pressed against the table. At the top of the moving table 3, the moving guide clamping mechanism 7 moves close to the edge of the metal plate, clamping and fixing the metal plate to the top of the moving table 3. The moving screw sleeve 4 is controlled to move the moving table 3 and the metal plate to the bottom of the moving laser cutting mechanism 2 for cutting. After the metal plate is cut, the moving screw sleeve 4 moves the moving table 3 away from the bottom of the moving laser cutting mechanism 2. The linkage mechanism 5 is controlled to move the lifting mechanism 6 and the moving guide clamping mechanism 7 in the opposite direction, so that the moving guide clamping mechanism 7 moves away from the metal plate. The lifting mechanism 6 lifts the metal plate away from the moving table 3, making it easy to remove the cut metal plate from the top of the moving table 3. When the metal plate moves away from the moving table 3 after cutting, the cleaning mechanism 8 moves back and forth on the top of the metal plate to clean up the debris generated by cutting the metal plate.

[0026] As a further embodiment of the present invention, the processing table 1 includes a base frame 101, a mounting frame 102 is fixedly installed on one side of the top of the base frame 101, and the movable laser cutting mechanism 2 is fixedly connected to the inside of the mounting frame 102 by bolts; a movable screw 103 is rotatably installed between the central positions of the two sides inside the base frame 101 through a bearing, and a movable screw sleeve 4 is threadedly connected to the thread on the surface of the movable screw 103; a movable motor 105 is fixedly installed at the central position of the bottom of one side of the mounting frame 102, and bevel gears 106 are fixedly installed at the output end of the movable motor 105 and the end of the movable screw 103 near the movable motor 105, and the two bevel gears 106 mesh with each other;

[0027] During operation, the base frame 101 provides mounting support for each component, and the mounting frame 102 ensures the stable fixation of the mobile laser cutting mechanism 2, guaranteeing the basic stability of the cutting operation. When it is necessary to move the metal sheet to be cut to the bottom of the mobile laser cutting mechanism 2 for cutting, the mobile motor 105 on one side of the mounting frame 102 is started. The bevel gear 106 at the output end of the mobile motor 105 meshes with the bevel gear 106 at the end of the mobile screw 103, transmitting the rotational power of the mobile motor 105 to the mobile screw 103, causing the mobile screw 103 to rotate inside the base frame 101, so that the mobile screw sleeve 4 drives the mobile table 3 to move horizontally and linearly along the mobile screw 103 until the mobile table 3 smoothly moves the sheet to be cut to the designated cutting position at the bottom of the mobile laser cutting mechanism 2 for cutting.

[0028] As a further embodiment of the present invention, a limiting block 301 is fixedly installed at the center of one side of the top of the movable platform 3, and multiple limiting sliders 305 are fixedly installed at equal intervals on both sides of the movable platform 3. The inner walls of the base frame 101 are symmetrically provided with movable limiting grooves 104, and the limiting sliders 305 are slidably connected inside the movable limiting grooves 104.

[0029] During operation, the metal plate is placed on top of the movable platform 3 and pressed against the limiting block 301 to initially position the metal plate. The limiting sliders 305 on both sides of the movable platform 3 slide in the movable limiting groove 104 on the inner wall of the base frame 101 to provide guidance and limit for the displacement of the movable platform 3, and to prevent the movable platform 3 from shifting or shaking during the displacement process.

[0030] As a further embodiment of the present invention, the top of the movable platform 3 is symmetrically provided with rectangular mounting grooves 302, the movable screw sleeve 4 is fixedly connected to the center position between the two rectangular mounting grooves 302 at the bottom of the movable platform 3, the center position of the bottom of the movable screw sleeve 4 is fixedly installed with a mounting block 401, and one side of the bottom of the mounting block 401 is fixedly installed with an electric telescopic rod 402; the center position of the bottom of the mounting block 401 is fixedly installed with a fixing plate 403, the two sides of the fixing plate 403 are symmetrically and slidably installed with limit slide rods 405, the telescopic end of the electric telescopic rod 402 is fixedly installed with a rectangular frame 404, and the inner wall of the rectangular frame 404 is fixedly connected to the two ends of the limit slide rod 405, the surface of the limit slide rod 405 located on one side of the fixing plate 403 is sleeved with a return spring 406, and the two ends of the two sides of the rectangular frame 404 are respectively fixedly installed with connecting columns 407.

[0031] During operation, after the metal sheet to be cut is placed on the top of the movable platform 3 and initially positioned by the limiting block 301, the electric telescopic rod 402 on the bottom mounting block 401 of the movable screw sleeve 4 is activated. The electric telescopic rod 402 performs telescopic movement, pushing the rectangular frame 404 at its telescopic end to move horizontally in a straight line along the limiting slide rod 405 on the fixed plate 403. The limiting slide rod 405 provides guidance for the displacement of the rectangular frame 404, and the reset spring 406 can subsequently reset the rectangular frame 404.

[0032] As a further embodiment of the present invention, the linkage mechanism 5 includes a movable push plate 501, a concave slide 502 symmetrically slidably installed at the bottom of the movable push plate 501, and the two ends of the concave slide 502 are fixedly connected to the bottom of the movable platform 3 through the movable push plate 501; three push grooves 503 are equidistantly provided on the movable push plate 501, and the push grooves 503 correspond to the positions of the rectangular mounting groove 303; three push slide columns 504 are fixedly installed on the side of the movable push plate 501 near the movable screw sleeve 4; a connecting strip 505 is fixedly installed between the two ends of the three push slide columns 504 on the same side; a linkage strip 506 is symmetrically fixedly installed on the side of one of the connecting strips 505 away from the push slide column 504, and the linkage strip 506 is fixedly connected to the connecting column 407;

[0033] During operation, the rectangular frame 404 drives the linkage bar 506 of the linkage mechanism 5 to move synchronously through the connecting column 407, thereby pulling the movable push plate 501 to slide horizontally inside the concave slide 502. The concave slide 502 is fixed to the bottom of the movable platform 3, providing stable support for the sliding of the movable push plate 501. The pushing groove 503 on the surface of the movable push plate 501 is slidably connected to the pushing protrusion 702 of the movable guide clamping mechanism 7. During the sliding process of the movable push plate 501, the pushing groove 503 generates a horizontal pushing force on the pushing protrusion 702, driving the movable slider 701 to move linearly inside the rectangular mounting groove 303.

[0034] As a further embodiment of the present invention, the lifting mechanism 6 includes a top plate 601, three push plates 602 are fixedly installed at equal intervals at the bottom of the top plate 601, and three push grooves 603 are provided at equal intervals on the push plates 602. The push grooves 603 are composed of a section of inclined groove and a horizontal through groove. The push grooves 603 of the three push plates 602 slide on the surface of the push rods 504. The two ends of the bottom of the top plate 601 are respectively symmetrically fixedly installed with mounting rods 604. The surfaces of the two mounting rods 604 are slidably mounted with a second fixing plate 605, and the second fixing plate 605 is fixedly connected to the two ends inside the rectangular mounting groove 302. The bottom ends of the two mounting rods 604 pass through the second fixing plate 605 and are fixedly connected with a connecting end plate 606. The surface of the mounting rods 604 located between the second fixing plate 605 and the connecting end plate 606 is sleeved with a second return spring 607.

[0035] During operation, as the moving push plate 501 moves, the pusher slide 504 on one side simultaneously performs a horizontal reset movement. The pusher slide 504 slides from the horizontal through groove of the pusher slide groove 603 to the inclined groove position. Under the guidance of the inclined groove, the pusher slide 504 generates an upward pushing force on the push plate 602, causing the push plate 602 and the top plate 601 to move upward. The mounting slide rod 604 at the bottom of the top plate 601 slides upward along the second fixed plate 605, and the second reset spring 607 is compressed. During the upward movement of the top plate 601, it contacts the cut metal plate. The bottom of the material contacts the top surface of the moving platform 3, lifting the material and creating a gap between it and the platform. This allows workers to easily pick up the material for unloading without manually prying it, improving the convenience and efficiency of the unloading operation. After unloading, the electric telescopic rod 402 moves again, pushing the slide column 504 back to the horizontal through slot of the push slide groove 603. Under the rebound action of the return spring 607, the mounting slide rod 604 drives the top plate 601 to return to its initial position, preparing for the next material cutting operation.

[0036] As a further embodiment of the present invention, the top of the movable platform 3 is provided with three rectangular mounting slots 303 respectively on the side of the two rectangular mounting slots 302 that are far apart from each other, and the movable guide clamping mechanism 7 is slidably connected inside the rectangular mounting slots 303. The inner wall of the rectangular mounting slots 303 is symmetrically provided with guide limiting grooves 304. The movable guide clamping mechanism 7 includes a movable slider 701, which is slidably connected inside the rectangular mounting slots 303. A pushing protrusion 702 is fixedly installed at the bottom of the movable slider 701 and is slidably connected to the pushing inclined groove 503. Limiting protrusions 703 are fixedly installed on both sides of the movable slider 701 and are slidably connected inside the guide limiting grooves 304.

[0037] During operation, when the moving slider 701 slides inside the rectangular mounting groove 303 as the pushing protrusion 702 is pushed by the pushing inclined groove 503, it drives the limiting protrusion 703 to slide inside the corresponding guide limiting groove 304, ensuring that the moving slider 701 will not tilt or deflect during the movement.

[0038] As a further embodiment of the present invention, a mounting bracket 704 is fixedly installed on the top of the movable slider 701, and the mounting bracket 704 slides close to the top of the movable platform 3. Rectangular through slots 705 are symmetrically provided on both sides of the mounting bracket 704. Limiting slide rods 706 are symmetrically fixedly installed on the inner wall of the rectangular through slots 705. A movable plate 707 is slidably installed through the surfaces of the two limiting slide rods 706. A lifting spring 708 is sleeved on the surface of the limiting slide rods 706 on one side of the movable plate 707. A mounting base 709 is fixedly installed on one side of the movable plate 707. A top bracket 710 is rotatably installed inside the mounting base 709. The end of the top bracket 710 away from the mounting base 709 is open to the mounting bracket. Mounting base 2 711 is rotatably mounted on the shaft. Clamping plate 716 is fixedly mounted on the side of mounting base 2 711 away from mounting frame 704. Rotating sleeve 712 is movably sleeved at the center of the rotating shaft surface of mounting base 2 711. Positioning slide rod 713 is fixedly mounted on the surface of rotating sleeve 712, and the end of positioning slide rod 713 away from rotating sleeve 712 is slidably connected to both sides of mounting frame 704. Limiting plate 714 is fixedly mounted on the inner surface of rotating sleeve 712 on both sides of mounting frame 704. Lifting spring 2 715 is sleeved on the inner surface of rotating sleeve 712 on both sides of mounting frame 704. Lifting spring 2 715 is located on one side of limiting plate 714.

[0039] During operation, the movable slider 701 moves the top mounting bracket 704 synchronously, causing the clamping plate 716 on the mounting bracket 704 to gradually approach the edge of the metal plate. When the clamping plate 716 contacts the surface of the metal plate, the plate exerts a reverse compressive force on the clamping plate 716. This compressive force is transmitted to the second mounting base 711, which is fixed to the clamping plate 716, causing the top bracket 710 to rotate between the first mounting base 709 and the second mounting base 711. When the top bracket 710 rotates, it pushes the movable plate 707 to slide along the second limiting slide rod 706, while simultaneously compressing the first lifting spring 708. The reverse elastic force generated by the first lifting spring 708 is transmitted through the movable plate 707 and the top bracket 710. Feedback is sent to the clamping plate 716, causing it to fit tightly against the surface of the sheet metal, thus achieving flexible clamping of the sheet metal. Simultaneously, when the clamping plate 716 is squeezed closer to the mounting frame 704, it pushes the positioning slide rod 713 to slide on both sides of the mounting frame 704. The positioning slide rod 713 drives the rotating sleeve 712 to move synchronously, causing the limiting plate 714 to compress and deform the lifting spring 715. The rebound effect of the lifting spring 715 helps to push the clamping plate 716 to fit tightly against the edge of the sheet metal, further improving clamping stability. The positioning slide rod 713 limits the displacement and angle of the clamping plate 716, ensuring that the clamping plate 716 will not tilt or deflect during the clamping process.

[0040] As a further embodiment of the present invention, the cleaning mechanism 8 includes a support plate 801, and there are two support plates 801. The two support plates 801 are fixedly positioned relative to each other at the center of the top of the base frame 101 on one side of the mounting frame 102. Guide slide rods 802 are symmetrically fixed between the two support plates 801. Movable slide blocks 803 are symmetrically slidably installed through the two ends of the two guide slide rods 802. Reset springs 804 are respectively sleeved on the two ends of the guide slide rods 802 on the side of the two movable slide blocks 803 that are far apart from each other. A cleaning brush 805 is fixedly installed at the bottom between the two movable slide blocks 803. A push roller 806 is rotatably installed at the bottom of the movable slide block 803 through a rotating shaft. Wave-shaped push strips 807 are symmetrically fixed on both sides of the top of the movable platform 3, and the positions of the wave-shaped push strips 807 and the push rollers 806 correspond to those of the push rollers 806.

[0041] During operation, after the laser cutting of the metal sheet is completed, the moving motor 105 rotates in reverse, driving the moving screw sleeve 4 to pull the moving table 3 along the moving screw 103 in a direction away from the moving laser cutting mechanism 2. At this time, the wave-shaped push bars 807 fixed on both sides of the top of the moving table 3 move synchronously with the table and gradually come into contact with the push rollers 806. After the push rollers 806 come into contact with the wave-shaped push bars 807, the push rollers 806 roll along the wave-shaped trajectory of the wave-shaped push bars 807, pushing the moving slides on both sides. 803 slides back and forth along the guide slide bar 802. When the movable slide block 803 slides, it will squeeze the return springs 804 at both ends of the guide slide bar 802 to produce elastic deformation. The rebound force of the return springs 804 will push the movable slide block 803 to return to its original position, causing the cleaning brush 805 to move synchronously with the movable slide block 803. The bristles of the cleaning brush 805 are always in close contact with the surface of the cut metal plate on the movable table 3, and thoroughly sweep away the metal debris, dust and other impurities remaining on the surface and edges of the plate during the laser cutting process.

[0042] Working principle of this invention:

[0043] The precast metal sheet to be cut is placed on top of the movable platform 3, so that the sheet is pressed against the limiting block 301 on the movable platform 3, completing the initial position limitation of the sheet and laying the foundation for subsequent clamping and fixing. The electric telescopic rod 402 at the bottom of the movable screw sleeve 4 is activated, and the telescopic end of the electric telescopic rod 402 is controlled to push the rectangular frame 404 to move horizontally along the limiting slide bar 405. The rectangular frame 404 drives the linkage bar 506 of the linkage mechanism 5 to move synchronously through the connecting column 407, thereby pulling the movable push plate 501 to slide horizontally in the concave slide 502. The pushing groove 503 on the surface of the movable push plate 501 and the pushing protrusion 702 make sliding cooperation, pushing the movable slider 701 to move linearly in the rectangular mounting groove 303 of the movable platform 3. The movable slider 701 drives the top mounting frame. When the clamping plate 716 on the mounting bracket 704 comes into contact with the edge of the plate, the plate exerts a reverse compressive force on the clamping plate 716, causing the top bracket 710 to rotate between the mounting base 1 709 and the mounting base 2 711. The top bracket 710 pushes the moving plate 707 to slide along the limiting slide rod 2 706 and compress the lifting spring 1 708. The reverse elastic force of the lifting spring 1 708 is fed back to the clamping plate 716 through the top bracket 710, making the clamping plate 716 tightly adhere to the surface of the plate. At the same time, the clamping plate 716 pushes the positioning slide rod 713 to slide inside both sides of the mounting bracket 704, causing the limiting plate 714 to compress the lifting spring 2 715. Its rebound force assists the clamping plate 716 in adhering tightly to the plate, realizing multi-point uniform flexible clamping of the metal plate and avoiding plate clamping deformation or displacement.

[0044] After the sheet metal is clamped and fixed, the moving motor 105 of the processing table 1 is started. The bevel gear 106 at its output end meshes with the bevel gear 106 at the end of the moving screw 103, driving the moving screw 103 to rotate in the base frame 101. The moving screw sleeve 4, which is threadedly connected to the moving screw 103, drives the moving table 3 to move horizontally and linearly along the moving screw 103. After passing through the sliding guide of the limiting sliders 305 on both sides of the moving table 3 along the moving limiting slide groove 104, the moving table 3 accurately transfers the metal sheet to the designated position at the bottom of the moving laser cutting mechanism 2. The moving laser cutting mechanism 2 is started to complete the laser cutting operation on the metal sheet.

[0045] After the sheet metal is cut, the moving motor 105 rotates in reverse, causing the moving screw sleeve 4 to drive the moving table 3 away from the moving laser cutting mechanism 2 on the surface of the moving screw 103. The moving table 3 drives the wave-shaped push bar 807 to be pressed against the push roller 806 between the two support plates 801, so that the push roller 806 slides along the wave trajectory of the wave-shaped push bar 807, pushing and lifting the moving slide block 803 to slide and compress the return spring 3 804 at both ends of the guide slide rod 802, causing the moving slide block 803 to slide back and forth in a straight line on the surface of the guide slide rod 802 under the rebound action of the return spring 3 804, driving the cleaning brush 805 to move back and forth on the surface of the metal sheet to clean the debris generated by the cutting of the metal sheet.

[0046] After the movable table 3 is moved away from the movable laser cutting mechanism 2 to the designated unloading position, the electric telescopic rod 402 extends and retracts in the reverse direction, causing the rectangular frame 404 to return to its original position along the limit slide bar 405. The reset spring 406 assists in the frame's reset. At the same time, the connecting column 407 pulls the movable push plate 501 to slide in the reverse direction through the linkage bar 506, so that the pushing groove 503 and the pushing protrusion 702 cooperate to move the movable slider 701 away from the metal plate. The clamping plate 716 simultaneously loosens its fixation on the plate. During the reverse sliding of the movable push plate 501, the pushing slide column 504 on one side slides from the horizontal through groove of the pushing groove 603 to the inclined groove section. Under the guidance of the inclined groove, the pushing slide column 504... 04. An upward pushing force is generated on the push plate 602, which drives the top plate 601 to move upward. The slide rod 604 installed at the bottom of the top plate 601 slides along the fixed plate 605 and squeezes the reset spring 607. The top plate 601 contacts the bottom of the cut metal sheet and lifts it up, so that the sheet is separated from the surface of the moving table 3, making it convenient for the staff to directly pick up the sheet and complete the unloading. After the unloading is completed, the electric telescopic rod 402 moves again, and the push slide column 504 slides back to the horizontal through groove of the push slide groove 603. Under the rebound action of the reset spring 607, the top plate 601 returns to the initial position, completing one cutting operation cycle, and the cutting operation of the next sheet can be carried out.

Claims

1. A laser cutting device for prefabricated metal sheets used in building construction, comprising a processing table (1), characterized in that: A movable laser cutting mechanism (2) is bolted to one side of the top of the processing table (1). A movable table plate (3) is provided at the center of the bottom of the processing table (1), and a movable screw sleeve (4) is fixedly installed at the center of the bottom of the movable table plate (3). A linkage mechanism (5) is symmetrically provided on both sides of the movable screw sleeve (4) at the bottom of the movable table plate (3). A lifting mechanism (6) is symmetrically provided on both sides of the movable screw sleeve (4) at the movable table plate (3). Three movable guide clamping mechanisms (7) are provided at equal intervals on both sides of the top of the movable table plate (3). A cleaning mechanism (8) is fixedly installed on one side of the top of the processing table (1) on the movable laser cutting mechanism (2).

2. The laser cutting device for prefabricated metal sheets used in building construction according to claim 1, characterized in that: The processing table (1) includes a base frame (101). A mounting frame (102) is fixedly installed on one side of the top of the base frame (101), and the movable laser cutting mechanism (2) is fixedly connected to the inside of the mounting frame (102) by bolts. A movable screw (103) is rotatably installed between the central positions of the two sides inside the base frame (101) through bearings. A movable motor (105) is fixedly installed at the central position of the bottom of one side of the mounting frame (102). A bevel gear (106) is fixedly installed at the output end of the movable motor (105) and the end of the movable screw (103) near the movable motor (105), and the two bevel gears (106) mesh with each other. The two sides of the inner wall of the base frame (101) are symmetrically provided with movable limiting grooves (104).

3. The laser cutting device for prefabricated metal sheets used in building construction according to claim 2, characterized in that: A limiting block (301) is fixedly installed at the center of one side of the top of the movable platform (3). A rectangular mounting groove (302) is symmetrically provided through the top of the movable platform (3). Three rectangular mounting grooves (303) are provided through the top of the movable platform (3) on the side of the two rectangular mounting grooves (302) that are far apart from each other. The movable guide clamping mechanism (7) is slidably connected inside the rectangular mounting groove (303). The inner wall of the rectangular mounting groove (303) is symmetrically provided with guide limiting slide grooves (304). Multiple limiting sliders (305) are fixedly installed at equal intervals on both sides of the movable platform (3). The limiting sliders (305) are slidably connected inside the movable limiting slide grooves (104).

4. The laser cutting device for prefabricated metal sheets used in building construction according to claim 3, characterized in that: The movable screw sleeve (4) is fixedly connected to the center position between the two rectangular mounting slots (302) at the bottom of the movable platform (3), and the movable screw sleeve (4) is threadedly connected to the thread on the surface of the movable screw (103). A mounting block (401) is fixedly installed at the center position of the bottom of the movable screw sleeve (4), an electric telescopic rod (402) is fixedly installed on one side of the bottom of the mounting block (401), and a fixing plate (402) is fixedly installed at the center position of the bottom of the mounting block (401). 3) A limiting slide rod (405) is symmetrically and slidably installed on both sides of the fixed plate (403). A rectangular frame (404) is fixedly installed on the telescopic end of the electric telescopic rod (402), and the inner wall of the rectangular frame (404) is fixedly connected to both ends of the limiting slide rod (405). A reset spring (406) is sleeved on the surface of the limiting slide rod (405) on one side of the fixed plate (403). Connecting columns (407) are fixedly installed at both ends of both sides of the rectangular frame (404).

5. The laser cutting device for prefabricated metal sheets used in building construction according to claim 4, characterized in that: The linkage mechanism (5) includes a movable push plate (501). A concave slide (502) is symmetrically slidably installed through the bottom of the movable push plate (501). Both ends of the concave slide (502) are fixedly connected to the bottom of the movable platform (3) through the movable push plate (501). The movable push plate (501) is provided with three push grooves (503) at equal intervals. The push grooves (503) correspond to the positions of the rectangular mounting grooves (303). Three push columns (504) are fixedly installed on the side of the movable push plate (501) near the movable screw sleeve (4). A connecting strip (505) is fixedly installed between the two ends of the three push columns (504) on the same side. A linkage strip (506) is symmetrically fixedly installed on the side of one of the connecting strips (505) away from the push column (504). The linkage strip (506) is fixedly connected to the connecting column (407).

6. The laser cutting device for prefabricated metal sheets used in building construction according to claim 5, characterized in that: The lifting mechanism (6) includes a top plate (601). Three push plates (602) are fixedly installed at equal intervals on the bottom of the top plate (601). The push plates (602) are provided with three push grooves (603) at equal intervals. Each push groove (603) is composed of a section of inclined groove and a horizontal through groove. The push grooves (603) of the three push plates (602) slide on the surface of the push column (504). The two ends of the bottom of the top plate (601) are respectively symmetrically fixedly installed with mounting slides. The rod (604) has a fixed plate (605) that slides through its surface. The fixed plate (605) is fixedly connected to both ends inside the rectangular mounting groove (302). The bottom ends of the two mounting rods (604) pass through the fixed plate (605) and are fixedly connected to a connecting end plate (606). A return spring (607) is sleeved on the surface of the mounting rod (604) between the fixed plate (605) and the connecting end plate (606).

7. The laser cutting device for prefabricated metal sheets used in building construction according to claim 5, characterized in that: The movable guide clamping mechanism (7) includes a movable slider (701), which is slidably connected to the inside of a rectangular mounting groove (303). A pushing protrusion (702) is fixedly installed at the bottom of the movable slider (701), and the pushing protrusion (702) is slidably connected to the pushing inclined groove (503). Limiting protrusions (703) are fixedly installed on both sides of the movable slider (701), and the limiting protrusions (703) are slidably connected to the inside of a guide limiting slide groove (304). A mounting bracket (704) is fixedly installed on the top of the movable slider (701), and the mounting bracket (704) slides close to the top of the movable platform (3). A rectangular through groove (705) is symmetrically provided on both sides of the mounting bracket (704). A limit slide rod (706) is symmetrically fixedly installed on the inner wall of the rectangular through groove (705). A movable plate (707) is slidably installed on the surface of the two limit slide rods (706). A lifting spring (708) is sleeved on the surface of the limit slide rod (706) located on one side of the movable plate (707).

8. The laser cutting device for prefabricated metal sheets used in building construction according to claim 7, characterized in that: A mounting base one (709) is fixedly installed on one side of the movable plate (707). A top frame (710) is rotatably installed inside the mounting base one (709). A mounting base two (711) is rotatably installed on the end of the top frame (710) away from the mounting base one (709) via a rotating shaft. A clamping plate (716) is fixedly installed on the side of the two mounting base two (711) away from the mounting frame (704). A rotating sleeve (712) is movably sleeved at the center position of the rotating shaft surface of the mounting base two (711). A positioning slide rod (713) is fixedly installed on the surface of the rotating sleeve (712), and the end of the positioning slide rod (713) away from the rotating sleeve (712) is slidably connected to both sides of the mounting frame (704). A limiting plate (714) is fixedly installed on the surface of the rotating sleeve (712) located inside both sides of the mounting frame (704), and a lifting spring (715) is sleeved on the surface of the rotating sleeve (712) located inside both sides of the mounting frame (704). The lifting spring (715) is located on one side of the limiting plate (714).

9. A laser cutting device for prefabricated metal sheets used in building construction according to claim 7, characterized in that: The cleaning mechanism (8) includes a support plate (801), and there are two support plates (801). The two support plates (801) are fixed to each other at the center of the top of the base frame (101) on one side of the mounting frame (102). Guide slide rods (802) are symmetrically fixed between the two support plates (801). Movable slide blocks (803) are symmetrically slidably installed at both ends of the two guide slide rods (802). Reset springs (804) are respectively sleeved at both ends of the guide slide rods (802) on the side away from each other of the two movable slide blocks (803). A cleaning brush (805) is fixedly installed at the bottom between the two movable slide blocks (803). A push roller (806) is rotatably installed at the bottom of the movable slide block (803) through a rotating shaft. Wave-shaped push strips (807) are symmetrically fixed on both sides of the top of the movable platform (3), and the positions of the wave-shaped push strips (807) and the push rollers (806) correspond to each other.

10. A method of using a laser cutting device for prefabricated metal sheets in building construction, as described in any one of claims 1-9, characterized in that... The method of use includes the following steps: Place the precast metal sheet to be cut on the top of the moving platform (3), so that the sheet is close to the limiting block (301) on the moving platform (3), thus completing the initial position limitation of the sheet and laying the foundation for subsequent clamping and fixing. Start the electric telescopic rod (402) at the bottom of the moving screw sleeve (4), and control the telescopic end of the electric telescopic rod (402) to push the rectangular frame (404) to move horizontally along the limiting slide rod one (405). The rectangular frame (404) drives the linkage bar (506) of the linkage mechanism (5) to move synchronously through the connecting column (407), thereby pulling the moving push plate (501) to slide horizontally in the concave slide (502). The pushing groove (503) on the surface of the moving push plate (501) and the pushing protrusion (702) produce a sliding fit, pushing the moving slider (701) to move linearly in the rectangular mounting groove two (303) of the moving platform (3). The moving slider (701) drives the top mounting frame. (704) When the clamping plate (716) on the mounting bracket (704) comes into contact with the edge of the plate, the plate exerts a reverse compressive force on the clamping plate (716), causing the top bracket (710) to rotate between mounting base one (709) and mounting base two (711). The top bracket (710) pushes the moving plate (707) to slide along the limiting slide rod two (706) and compress the lifting spring one (708). The reverse elastic force of the lifting spring one (708) The force is fed back to the clamping plate (716) through the top frame (710), so that the clamping plate (716) is in close contact with the surface of the plate. At the same time, the clamping plate (716) pushes the positioning slide rod (713) to slide inside the two sides of the mounting frame (704), which drives the limiting plate (714) to squeeze and lift the second spring (715). Its rebound force assists the clamping plate (716) to stick to the plate, so as to realize multi-point uniform flexible clamping of the metal plate and avoid plate clamping deformation or displacement. After the plate is clamped and fixed, the moving motor (105) of the processing table (1) is started. The bevel gear (106) at its output end meshes with the bevel gear (106) at the end of the moving screw (103) to drive the moving screw (103) to rotate in the base frame (101). The moving screw sleeve (4) connected to the moving screw (103) is controlled to drive the moving table (3) to make a horizontal linear motion along the moving screw (103). After passing through the sliding guide of the limiting sliders (305) on both sides of the moving table (3) along the moving limiting slide groove (104), the moving table (3) accurately transfers the metal plate to the designated position at the bottom of the moving laser cutting mechanism (2). The moving laser cutting mechanism (2) starts to complete the laser cutting operation on the metal plate. After the plate is cut, the moving motor (105) rotates in reverse, causing the moving screw sleeve (4) to drive the moving table (3) away from the moving laser cutting mechanism (2) on the surface of the moving screw (103). The moving table (3) drives the wave-shaped push bar (807) to be close to the push roller (806) between the two support plates (801), so that the push roller (806) slides along the wave trajectory of the wave-shaped push bar (807), pushing and lifting the moving slide (803) to slide and squeeze the reset spring three (804) at both ends of the guide slide (802) to deform. Under the rebound action of the reset spring three (804), the moving slide (803) slides back and forth in a straight line on the surface of the guide slide (802), driving the cleaning brush (805) to move back and forth on the surface of the metal plate to clean the debris generated by the cutting of the metal plate. After the moving platform (3) is moved away from the moving laser cutting mechanism (2) to the designated unloading position, the electric telescopic rod (402) extends and retracts in the opposite direction, causing the rectangular frame (404) to return to its original position along the limit slide bar (405). The reset spring (406) assists in the frame's reset. At the same time, the connecting column (407) pulls the moving push plate (501) to slide in the opposite direction through the linkage bar (506), so that the pushing sloping groove (503) and the pushing protrusion (702) cooperate to drive the moving slider (701) away from the metal plate. The clamping plate (716) simultaneously releases the fixation on the plate. During the reverse sliding process of the moving push plate (501), the pushing slide column (504) on one side slides from the horizontal through groove of the pushing slide groove (603) to the sloping groove section. Under the guidance of the sloping groove, the pushing slide... The column (504) generates an upward pushing force on the push plate (602), causing the top plate (601) to move upward. The slide rod (604) installed at the bottom of the top plate (601) slides along the fixed plate (605) and squeezes the reset spring (607). The top plate (601) contacts the bottom of the cut metal plate and lifts it up, so that the plate and the surface of the moving table (3) form a gap, making it convenient for the staff to directly pick up the plate and complete the unloading. After the unloading is completed, the electric telescopic rod (402) moves again, and the push slide column (504) slides back to the horizontal through groove of the push slide groove (603). Under the rebound action of the reset spring (607), the top plate (601) returns to the initial position, completing one cutting operation cycle, and the next plate cutting operation can be carried out.