Rapid metal cutting device for constructional engineering

Abstract

The invention discloses a rapid metal cutting device for constructional engineering, and relates to the technical field of rapid metal cutting devices for constructional engineering. According to the rapid metal cutting device for constructional engineering, before a metal material is cut, the metal material is placed on the supporting table provided with the arc-shaped upper surface and matched with the through groove formed in the center of the supporting table, so that the metal material placed on the supporting table is self-adaptive, and the situation that the metal material is irregular in shape and cannot be damaged is avoided. The metal material is directly placed on the supporting table, the gravity center deviates, so that the metal material cannot be fixed when the metal material is pushed by the clamping block, meanwhile, the clamps are arranged on the two sides of the protective cover, and the situation that the clamps are damaged when the laser transmitter cuts the metal material due to the fact that the clamps appear in the range of the laser transmitter is avoided; the problem that the metal material possibly deviates from the direction when being stressed when the shape is irregular, so that the metal material moves in the cutting process, and cutting errors occur is solved, and meanwhile, the clamp is prevented from being damaged in the cutting process.

Description

Technical Field

[0001] This invention relates to the technical field of rapid metal cutting devices for construction engineering, specifically a rapid metal cutting device for construction engineering. Background Technology

[0002] In construction engineering, metal cutting is a common and critical process that directly affects construction efficiency, precision, and safety. As construction projects become larger and more precise, higher demands are being placed on the efficiency, precision, safety, and automation of metal cutting.

[0003] Chinese patent CN212122097U discloses a steel plate cutting device for construction engineering. It utilizes a first servo motor to drive a first lead screw, and the cooperation between the first lead screw, first lead screw seat, slider, and longitudinal guide rail facilitates the forward and backward movement of a laser generator. A second servo motor drives a second lead screw, and the cooperation between the second lead screw, second lead screw seat, and transverse guide rail facilitates the left and right movement of the laser generator. The connection tube and suction cup facilitate the collection of the steel plate. However, this cutting device still uses an outdated disc cutter, which cannot accurately control the cutting length. Furthermore, the device lacks an adjustment mechanism, requiring multiple manual adjustments by the operator when placing the metal onto the clamp. Otherwise, the metal parts are easily rotated or displaced by the clamp pressure during cutting, leading to significant cutting errors. Additionally, the clamp is also within the cutting range, making it difficult to avoid the disc during cutting, resulting in the clamp being cut as well. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rapid metal cutting device for construction engineering, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid metal cutting device for construction engineering, comprising a worktable, a support leg fixed to the bottom surface of the worktable, a caster wheel fixed to the end of the support leg away from the worktable, a control rod fixed to the side wall of the worktable, a telescopic rod passing through the end of the control rod and slidably connected at the passing point, a protective cover fixed to the bottom end of the telescopic rod, a laser cutting mechanism fixed to the upper surface of the inner wall of the protective cover, a laser emitter slidably mounted on the bottom surface of the laser cutting mechanism, a fixing device for facilitating the fixing of metal materials provided above the worktable, a protective device for enhancing the protective effect provided on the outer wall of the fixing device, and a stabilizing device for facilitating the stabilization of metal materials provided on the inner wall of the fixing device; The fixing device includes a support platform, a guide rod, a tension spring, a clamping block, a fixing rod, a positioning rod, and an arc-shaped spring rod. The support platform is fixedly connected to the upper surface of the workbench. The upper surface of the support platform is arc-shaped and has a through groove in the center. The guide rod is fixedly connected to the upper surface of the support platform, and a circular plate is fixed to the upper end of the guide rod.

[0006] According to the above technical solution, the tension spring is fixedly connected to the bottom surface of the circular plate, the guide rod passes through the clamping block and is slidably connected at the point of penetration, the end of the tension spring away from the circular plate is fixedly connected to the upper surface of the clamping block, and the fixing rod is fixedly connected to the side wall of the clamping block away from the protective cover. When the clamping block slides upward, it compresses the tension spring.

[0007] According to the above technical solution, the fixing rod passes through the positioning rod and is rotatably connected at the penetration point. The arc-shaped spring rod is fixedly connected to the side wall of the positioning rod. The side wall of the clamping block away from the protective cover is fixed with a square protrusion. The end of the arc-shaped spring rod away from the positioning rod is fixedly connected to the side wall of the square protrusion on the side wall of the clamping block. When the positioning rod rotates, it squeezes the arc-shaped spring rod.

[0008] According to the above technical solution, the protective device includes a top plate, a reset spring, a pressing block, a limiting rod, an L-shaped rod, a support spring, a support rod, a moving plate, a pressing plate, and a push plate. The top plate is slidably connected to the side wall of the support platform away from the protective cover.

[0009] According to the above technical solution, a square protrusion is fixed on the side wall of the support platform away from the protective cover. The reset spring is fixedly connected to the side wall of the square protrusion on the side wall of the support platform. The pressing block is fixedly connected to the end of the reset spring away from the square protrusion. The pressing block is slidably connected to the side wall of the support platform away from the protective cover. When the pressing block slides, it pushes the top plate to slide.

[0010] According to the above technical solution, the limiting rod is fixedly connected to the side wall of the clamping block away from the protective cover. The limiting rod passes through the L-shaped rod and is rotatably connected at the point of penetration. A circular groove is opened on the upper surface of the clamping block. The supporting spring is fixedly connected to the bottom surface of the inner wall of the circular groove. The supporting rod is fixedly connected to the end of the supporting spring away from the circular groove.

[0011] According to the above technical solution, the movable plate is fixedly connected to the end of the support rod away from the support spring, the pressing plate is fixedly connected to the bottom surface of the movable plate, a groove is formed on the upper surface of the clamping block, the side wall of the pressing plate is slidably connected to the inner wall of the groove, and the push plate is slidably connected to the inner wall of the groove. When the movable plate moves downward, the pressing plate pushes the push plate away from each other. According to the above technical solution, the stabilizing device includes a suction cup, a hinge rod, and a sealing plate. The bottom surface of the clamping block has a through hole. The suction cup is fixedly connected to the bottom surface of the clamping block and communicates with the through hole. One end of the hinge rod is hinged to the bottom surface of the push plate. The sealing plate is slidably connected to the inner wall of the groove. The other end of the hinge rod is hinged to the upper surface of the sealing plate. The push plates move away from each other and drive the sealing plate to slide upward through the hinge rod.

[0012] This invention provides a rapid metal cutting device for construction engineering. It has the following beneficial effects: 1. This invention includes a fixing device. Before cutting the metal material, the metal material is placed on a support platform with an arc-shaped upper surface. A through groove in the center of the platform allows the metal material to adapt to its own shape, preventing irregular shapes from shifting the center of gravity and sliding laterally under pressure. This prevents the metal material from being properly secured by the clamping force. The clamps are positioned on both sides of a protective cover to prevent them from being within the laser emitter's range and thus from being damaged during laser cutting. This solves the problem of irregularly shaped metal materials shifting under pressure, causing cutting errors, and also prevents damage to the clamps during cutting. After the metal material is placed on the support platform, a fixing rod and an arc-shaped spring rod clamp and position the metal material, pushing it to the bottom of the support platform for precise centering. This reduces cutting errors and solves the problem of misalignment of the metal material during placement, leading to cutting errors.

[0013] 2. This invention includes a protective device. When placing metal materials, if the metal material is plate-shaped, the L-shaped rod rotates due to the thrust of the positioning rod. This, combined with a return spring, the pressing block, and the limiting rod, pushes the top plate upwards, supporting the metal material from the bottom. This prevents the metal material from deforming along the upper surface of the support platform under the thrust of the clamping block, thus avoiding errors during cutting. This solves the problem of plate-shaped metal materials easily deforming under pressure on an arc-shaped plane, leading to cutting errors. After the metal material is placed, when the protective cover and laser cutting mechanism are moved to bring the laser emitter into contact with the metal material, the supporting spring, support rod, and moving plate work together to form a light-blocking plate that adapts to the position of the protective cover. This prevents the protective cover from failing to completely block laser or external light during cutting, thus avoiding laser refraction that could injure workers or cutting errors caused by external light. This solves the problem that the protective cover's position sometimes affects its ability to provide complete protection.

[0014] 3. This invention is equipped with a stabilizing device. After the metal material is placed, the force of the tension spring causes the clamping block to apply pressure to the suction cup, making the suction cup adhere to the metal material and further fixing the metal material. This prevents the shape of the metal material from changing again after cutting, which would cause the center of gravity of the metal material to shift and slide to the side under pressure, thus shifting the position of the metal material. This solves the problem that the center of gravity of the metal material cannot be fixed after cutting and may cause displacement under pressure. When the protective cover is lowered further, the sliding of the push plate drives the hinge rod to rotate, causing the sealing plate to extract air from the contact point between the suction cup and the metal material through the through hole, making the metal material more tightly fixed under the suction cup. This prevents the center of gravity from shifting due to partial falling of the metal material during cutting, which would cause vibration and affect the cutting process. This solves the problem that vibration caused by changes in the shape of the metal material during cutting may lead to cutting errors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of some of the fixing and protective devices of the present invention; Figure 3 This is a schematic diagram of the half-section structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure of region A; Figure 5 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 6 This is a schematic diagram of some of the protective and fixing devices of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure of region B.

[0016] In the diagram: 1. Workbench; 2. Support leg; 3. Control rod; 4. Protective cover; 5. Laser cutting mechanism; 6. Laser emitter; 71. Support platform; 72. Guide rod; 73. Tension spring; 74. Clamping block; 75. Fixing rod; 76. Positioning rod; 77. Arc-shaped spring rod; 81. Top plate; 82. Return spring; 83. Extrusion block; 84. Limiting rod; 85. L-shaped rod; 86. Support spring; 87. Support rod; 88. Moving plate; 89. Extrusion plate; 810. Push plate; 91. Suction cup; 92. Hinge rod; 93. Sealing plate. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-7 One embodiment of the present invention is as follows: a rapid metal cutting device for construction engineering includes a worktable 1, a support leg 2 fixed to the bottom surface of the worktable 1, a caster wheel fixed to the end of the support leg 2 away from the worktable 1, a control rod 3 fixed to the side wall of the worktable 1, a telescopic rod passing through the end of the control rod 3 and slidably connected at the passing point, a protective cover 4 fixed to the bottom end of the telescopic rod, after the metal material is placed, the control rod 3 controls the telescopic rod to slide downward, the telescopic rod drives the protective cover 4 to move downward, a laser cutting mechanism 5 fixed to the upper surface of the inner wall of the protective cover 4, a laser emitter 6 sliding on the bottom surface of the laser cutting mechanism 5, the protective cover 4 drives the laser cutting mechanism 5 to move downward, so that the laser emitter 6 sliding below the laser cutting mechanism 5 is in contact with the upper surface of the metal material, and a fixing device for fixing the metal material is provided above the worktable 1.

[0019] The fixing device includes a support platform 71, a guide rod 72, a tension spring 73, a clamping block 74, a fixing rod 75, a positioning rod 76, and an arc-shaped spring rod 77. The support platform 71 is fixedly connected to the upper surface of the workbench 1. The upper surface of the support platform 71 is arc-shaped and has a through groove in the center. The two ends of the metal material are placed on the upper surface of the support platform 71, and the metal material will slide along the arc edge of the upper surface of the support platform 71 to the bottom. At the same time, the center of gravity of the metal material is adjusted through the through groove. When the metal material slides to the bottom of the arc edge, the center of gravity is automatically adjusted so that the gravity on the metal material is vertically downward. The guide rod 72 is fixedly connected to the upper surface of the support platform 71, and a circular plate is fixed to the upper end of the guide rod 72. The tension spring 73 is fixedly connected to the circular plate. On the bottom surface, guide rod 72 passes through clamping block 74 and is slidably connected at the point of penetration. The end of tension spring 73 away from the circular plate is fixedly connected to the upper surface of clamping block 74. When clamping block 74 is lifted upwards, it slides upwards along guide rod 72, compressing tension spring 73 as it slides upwards. When clamping block 74 is released, it is no longer subjected to upward thrust, but instead experiences the restoring elastic force of tension spring 73, sliding downwards along guide rod 72. Upon contact with the metal material, the metal material is pushed downwards by the thrust of tension spring 73. Clamping block 74 and support platform 71 are fixed to the metal material via the interaction of forces. Fixing rod 75 is fixedly connected to the side wall of clamping block 74 away from protective cover 4. The positioning rod 76 is inserted and rotated at the penetration point. After lifting the clamping block 74, the positioning rod 76 is moved to both sides. The positioning rod 76 rotates around the fixing rod 75. The arc-shaped spring rod 77 is fixedly connected to the side wall of the positioning rod 76. A square protrusion is fixed on the side wall of the clamping block 74 away from the protective cover 4. The end of the arc-shaped spring rod 77 away from the positioning rod 76 is fixedly connected to the side wall of the square protrusion on the side wall of the clamping block 74. When the positioning rod 76 rotates around the fixing rod 75, it compresses the arc-shaped spring rod 77. After the metal material is placed, the positioning rod 76 is released. The positioning rods 76 are brought closer together by the restoring elastic force of the arc-shaped spring rod 77, pushing the metal material to slide towards the center of the support platform 71, fixing the metal material in the center of the support platform 71. This fixing device Before cutting the metal material, the metal material is placed on a support platform 71 with a rounded upper surface. With the through groove in the center of the platform, the metal material placed on the support platform 71 adapts itself. This prevents the metal material from being irregularly shaped and being placed directly on the support platform 71, which would cause the center of gravity to shift and the metal material to slide to the side when subjected to force. This would prevent the metal material from being fixed when subjected to the pushing force of the clamping block 74. At the same time, the clamps are set on both sides of the protective cover 4 to prevent the clamps from being within the range of the laser emitter 6 and being damaged when the laser emitter 6 cuts the metal material. This solves the problem that if the metal material is irregularly shaped, it may deviate from the direction when subjected to force, causing the metal material to move during cutting and resulting in cutting errors. At the same time, it avoids damage to the clamp during cutting; after the metal material is placed on the support table 71, the positioning rod 76 clamps and positions the metal material in conjunction with the fixing rod 75 and the arc spring rod 77, pushing the metal material to the bottom of the support table 71 so that it can be more accurately fixed in the center of the support table 71, thereby reducing the error generated during cutting and solving the problem of the metal material being misaligned during placement, which leads to cutting errors.

[0020] In this embodiment, during operation: The clamping block 74 is lifted upwards, sliding upwards along the guide rod 72. Simultaneously, the clamping block 74 compresses the tension spring 73. After lifting the clamping block 74, the positioning rod 76 is moved to both sides, rotating around the fixed rod 75 and compressing the arc-shaped spring rod 77. The two ends of the metal material are placed on the upper surface of the support platform 71. The metal material slides along the arc edge of the upper surface of the support platform 71 to the bottom, while the center of gravity of the metal material is adjusted through the through groove. When the metal material slides to the bottom of the arc edge, its center of gravity automatically adjusts, ensuring that the gravity acting on the metal material is vertically downwards. After the metal material is placed, the positioning rod 76 is released. The positioning rod 76, subjected to the restoring force of the arc-shaped spring rod 77, rotates around the fixed rod 75. The positioning rods 76 are simultaneously brought closer together by the elastic force of the arc-shaped spring rods 77, pushing the metal material to slide towards the center of the support platform 71, fixing the metal material in the center of the support platform 71. Then, the clamping block 74 is released, and the clamping block 74 is no longer subjected to the upward pushing force. At the same time, it is subjected to the restoring elastic force of the tension spring 73 and slides downward along the guide rod 72. After contacting the metal material, it is pushed downward by the pushing force of the tension spring 73. The clamping block 74 and the support platform 71 fix the metal material on the support platform 71 through the interaction of forces. After the metal material is placed, the control rod 3 controls the telescopic rod to slide downward. The telescopic rod drives the protective cover 4 to move downward. The protective cover 4 drives the laser cutting mechanism 5 to move downward, so that the laser emitter 6 sliding below the laser cutting mechanism 5 is in contact with the upper surface of the metal material.

[0021] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, the outer wall of the fixing device is provided with a protective device to enhance the protective effect. The protective device includes a top plate 81, a return spring 82, a pressing block 83, a limiting rod 84, an L-shaped rod 85, a support spring 86, a support rod 87, a moving plate 88, a pressing plate 89, and a push plate 810. If the metal material to be cut is a long plate, after the metal material is placed on the support platform 71, the two sets of positioning rods 76 continue to rotate in a direction away from each other due to the pushing force of the metal material. When the two sets of positioning rods 76 rotate until their sides are in contact with the upper surface of the metal material, the included angle between the two sets of positioning rods 76 is a flat angle. The top plate 81 is slidably connected to the side wall of the support platform 71 away from the protective cover 4. A square protrusion is fixed to the side wall of the support platform 71 away from the protective cover 4. The return spring 82 is fixedly connected to the side wall of the square protrusion on the side wall of the support platform 71. The pressing block 83 is fixedly connected to the end of the return spring 82 away from the square protrusion. The pressing block 83 is slidably connected to the side wall of the support platform 71 away from the protective cover 4. As the pressing block 83 slides towards the center of the support platform 71, it presses the return spring 82. When the pressing block 83 slides to the top plate 81, it pushes the top plate 81 to slide upward, so that the top plate 81 slides to be flush with the upper surface of the support platform 71, supporting the metal material. The limiting rod 84 is fixedly connected to the side wall of the clamping block 74 away from the protective cover 4. The limiting rod 84 passes through the L-shaped rod 85 and is rotatably connected at the point of penetration. The positioning rod 76 When the L-shaped rod 85 is rotated to the horizontal bar, it pushes the L-shaped rod 85 to rotate around the limiting rod 84, so that the horizontal bar of the L-shaped rod 85 rotates to the horizontal direction. During the rotation, when the L-shaped rod 85 rotates to the pressing block 83, it pushes the pressing block 83 to slide towards the center of the support table 71. The upper surface of the clamping block 74 has a circular groove. The support spring 86 is fixedly connected to the bottom surface of the inner wall of the circular groove. The support rod 87 is fixedly connected to the end of the support spring 86 away from the circular groove. The moving plate 88 is fixedly connected to the end of the support rod 87 away from the support spring 86. When the protective cover 4 drives the laser cutting mechanism 5 to move downward to the upper surface of the laser emitter 6 that is in contact with the metal material, if the protective cover 4 is in contact with the worktable 1, the protective cover 4 moves to the moving plate 88. When the laser cutting mechanism 5 is moved downwards, the moving plate 88 drives the support rod 87 to slide downwards, simultaneously compressing the support spring 86. The pressing plate 89 is fixedly connected to the bottom surface of the moving plate 88. As the moving plate 88 moves downwards, it also drives the pressing plate 89 to slide downwards. The upper surface of the clamping block 74 has a groove. The side wall of the pressing plate 89 is slidably connected to the inner wall of the groove. The push plate 810 is slidably connected to the inner wall of the groove. When the pressing plate 89 slides downwards, it pushes the push plates 810 on both sides away from each other, so that the groove of the protective cover 4 is engaged with the moving plate 88. When the protective cover 4 drives the laser cutting mechanism 5 to move downwards to the upper surface of the metal material where the laser emitter 6 is in contact, if there is still a certain distance between the protective cover 4 and the worktable 1...The inclined surface of the pressing plate 89 on the bottom of the movable plate 88 fits against the inclined surfaces of the push plates 810 on both sides, forming a light-blocking plate that shields the light at the groove of the protective cover 4. When placing metal materials, if the metal material is plate-shaped, the L-shaped rod 85 rotates due to the pushing force received by the positioning rod 76. In conjunction with the return spring 82, the pressing block 83 and the limiting rod 84 push the top plate 81 upwards, supporting the metal material from the bottom. This prevents the metal material from deforming along the upper surface of the support platform 71 under the pushing force of the clamping block 74, thus avoiding errors during cutting. This solves the problem of plate-shaped metal materials easily deforming under pressure on an arc-shaped plane, leading to cutting errors. After the metal material is placed, when the movable protective cover 4 and the laser cutting mechanism 5 bring the laser emitter 6 into contact with the metal material, the support spring 86, support rod 87 and movable plate 88 work together to make the extrusion plate 89 and push plate 810 form a light-blocking plate that adapts to the position of the protective cover 4. This prevents the protective cover 4 from failing to completely block the laser or external light during cutting, which could lead to laser refraction accidentally injuring workers or errors in cutting due to the influence of external light. This solves the problem that the protective cover 4 is sometimes unable to provide complete protection due to its position.

[0022] The inner wall of the fixing device is equipped with a stabilizing device for stabilizing metal materials. The stabilizing device includes a suction cup 91, a hinge rod 92, and a sealing plate 93. A through hole is opened on the bottom surface of the clamping block 74. The suction cup 91 is fixedly connected to the bottom surface of the clamping block 74 and communicates with the through hole. When the clamping block 74 is subjected to a downward pushing force by the tension spring 73, the suction cup 91 on the bottom surface of the clamping block 74 is pressed and more tightly adheres to the metal material, adsorbing the metal material. One end of the hinge rod 92 is hinged to the push plate 810. When the moving plate 88 moves downward, the pressing plate 89 slides downward, pushing the push plates 810 on both sides away from each other. When the push plates 810 slide away from the center of the clamping block 74, they drive the hinge rod 92 to rotate. The sealing plate 93 is slidably connected to the inner wall of the groove. The other end of the hinge rod 92 is hinged to the upper surface of the sealing plate 93. The rotation of the hinge rod 92 pulls the sealing plate 93 upward, evacuating the air from the through hole on the bottom surface of the clamping block 74, so that the suction cup 91 contacts the metal material. The adsorption is tighter. After the metal material is placed, the stabilizing device uses the thrust of the tension spring 73 to apply pressure to the suction cup 91 through the clamping block 74, making the suction cup 91 adhere to the metal material and further fixing the metal material. This prevents the metal material from changing shape again after cutting, which would cause the center of gravity of the metal material to change and slide to the side under pressure, causing the position of the metal material to shift. This solves the problem that the center of gravity of the metal material cannot be fixed after cutting and may cause displacement under pressure. When the protective cover 4 is lowered further, the sliding of the push plate 810 drives the hinge rod 92 to rotate, causing the sealing plate 93 to extract air from the adhesion point between the suction cup 91 and the metal material through the through hole, making the metal material more tightly fixed under the suction cup 91. This prevents the center of gravity from shifting due to partial falling of the metal material during cutting, which would cause vibration and affect the cutting. This solves the problem that vibration caused by changes in the shape of the metal material during cutting may cause cutting errors.

[0023] In this embodiment, during operation: if the metal material to be cut is a long plate, after the metal material is placed on the support platform 71, the two sets of positioning rods 76 continue to rotate in a direction away from each other due to the pushing force of the metal material. When the two sets of positioning rods 76 rotate until their sides are in contact with the upper surface of the metal material, making the included angle between the two sets of positioning rods 76 a flat angle, when the positioning rod 76 rotates to the crossbar of the L-shaped rod 85, the sidewall of the positioning rod 76 slides against the sidewall of the L-shaped rod 85, and the positioning rod 76 pushes the L-shaped rod 85 to rotate around the limiting rod 84, causing the L-shaped rod 85 to... When the horizontal bar rotates to the horizontal direction, during the rotation of the L-shaped bar 85, when it rotates to the pressing block 83, the side wall of the L-shaped bar 85 slides against the side of the pressing block 83. The L-shaped bar 85 pushes the pressing block 83 to slide towards the center of the support platform 71. During the sliding of the pressing block 83 towards the center of the support platform 71, it compresses the return spring 82. When the pressing block 83 slides to the top plate 81, the side of the top plate 81 slides against the inclined surface of the pressing block 83. The pressing block 83 pushes the top plate 81 to slide upward, causing the top plate 81 to slide to... The protective cover 4 is flush with the upper surface of the support platform 71 to support the metal material. Because the side wall of the protective cover 4 has a groove, when the protective cover 4 moves the laser cutting mechanism 5 downwards until the laser emitter 6 is in contact with the upper surface of the metal material, if there is still a certain distance between the protective cover 4 and the worktable 1, the support rod 87 is supported by the support spring 86 and moves away from the clamping block 74. The inclined surface of the pressing plate 89 on the bottom surface of the moving plate 88 is in contact with the inclined surfaces of the push plates 810 on both sides, forming a light-blocking plate that blocks light at the groove of the protective cover 4. When the protective cover 4 moves the laser cutting mechanism 5 downwards... When the laser emitter 6 is in contact with the upper surface of the metal material, if the protective cover 4 is in contact with the worktable 1, when the protective cover 4 moves to the moving plate 88, it pushes the moving plate 88 downward. The moving plate 88 drives the support rod 87 to slide downward, and at the same time compresses the support spring 86. While the moving plate 88 moves downward, it also drives the pressing plate 89 to slide downward. The inclined surface of the pressing plate 89 is in contact with the inclined surface of the push plate 810. Therefore, when the pressing plate 89 slides downward, it pushes the push plates 810 on both sides away from each other, so that the groove of the protective cover 4 is engaged with the moving plate 88.

[0024] When the clamping block 74 is pushed downward by the tension spring 73, the suction cup 91 on the bottom surface of the clamping block 74 is pressed, making it more tightly attached to the metal material and adsorbing the metal material. When the protective cover 4 moves the laser cutting mechanism 5 downward to the upper surface of the laser emitter 6 that is attached to the metal material, if the protective cover 4 is attached to the worktable 1, when the protective cover 4 moves to the moving plate 88, it pushes the moving plate 88 downward. At the same time as the moving plate 88 moves downward, it also drives the pressing plate 89 to slide downward. When the pressing plate 89 slides downward, it pushes the push plates 810 on both sides away from each other, and the push plates 810 move away from the clamping block 74. When the center slides, the hinge point between the hinge rod 92 and the push plate 810 also slides away from the clamping block 74. The end of the hinge rod 92 away from the push plate 810 is hinged to the sealing plate 93. The sealing plate 93 can only slide up and down on the inner wall of the clamping block 74. Therefore, the position of the hinge point between the hinge rod 92 and the sealing plate 93 remains unchanged in the horizontal direction. So when the hinge point between the hinge rod 92 and the push plate 810 moves in the horizontal direction, it also rotates. The rotation of the hinge rod 92 pulls the sealing plate 93 to slide upward, evacuating the air from the through hole on the bottom surface of the clamping block 74, making the suction cup 91 adhere more tightly to the metal material.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid metal cutting device for construction engineering, comprising a worktable (1), characterized in that: The bottom surface of the workbench (1) is fixed with a support leg (2), and the end of the support leg (2) away from the workbench (1) is fixed with a caster wheel. The side wall of the workbench (1) is fixed with a control rod (3), and the end of the control rod (3) is through a telescopic rod, which is slidably connected at the through point. The bottom end of the telescopic rod is fixed with a protective cover (4). The upper surface of the inner wall of the protective cover (4) is fixed with a laser cutting mechanism (5). The bottom surface of the laser cutting mechanism (5) is slidably fitted with a laser emitter (6). A fixing device for fixing metal materials is provided above the workbench (1). The outer wall of the fixing device is provided with a protective device to enhance the protective effect. The inner wall of the fixing device is provided with a stabilizing device for stabilizing metal materials. The fixing device includes a support platform (71), a guide rod (72), a tension spring (73), a clamping block (74), a fixing rod (75), a positioning rod (76), and an arc-shaped spring rod (77). The support platform (71) is fixedly connected to the upper surface of the workbench (1). The upper surface of the support platform (71) is set as an arc shape and a through groove is opened in the center. The guide rod (72) is fixedly connected to the upper surface of the support platform (71), and a circular plate is fixed at the upper end of the guide rod (72).

2. The rapid metal cutting device for construction engineering according to claim 1, characterized in that: The tension spring (73) is fixedly connected to the bottom surface of the circular plate, the guide rod (72) passes through the clamping block (74) and is slidably connected at the point of penetration, the end of the tension spring (73) away from the circular plate is fixedly connected to the upper surface of the clamping block (74), and the fixing rod (75) is fixedly connected to the side wall of the clamping block (74) away from the protective cover (4).

3. The rapid metal cutting device for construction engineering according to claim 2, characterized in that: The fixing rod (75) passes through the positioning rod (76) and is rotatably connected at the point of penetration. The arc-shaped spring rod (77) is fixedly connected to the side wall of the positioning rod (76). The side wall of the clamping block (74) away from the protective cover (4) is fixed with a square protrusion. One end of the arc-shaped spring rod (77) away from the positioning rod (76) is fixedly connected to the square protrusion side wall of the side wall of the clamping block (74).

4. The rapid metal cutting device for construction engineering according to claim 3, characterized in that: The protective device includes a top plate (81), a reset spring (82), a pressing block (83), a limiting rod (84), an L-shaped rod (85), a support spring (86), a support rod (87), a moving plate (88), a pressing plate (89), and a push plate (810). The top plate (81) is slidably connected to the side wall of the support platform (71) away from the protective cover (4).

5. A rapid metal cutting device for construction engineering according to claim 4, characterized in that: The support platform (71) has a square protrusion fixed on the side wall away from the protective cover (4). The reset spring (82) is fixedly connected to the side wall of the square protrusion on the side wall of the support platform (71). The pressing block (83) is fixedly connected to the end of the reset spring (82) away from the square protrusion. The pressing block (83) is slidably connected to the side wall of the support platform (71) away from the protective cover (4).

6. The rapid metal cutting device for construction engineering according to claim 5, characterized in that: The limiting rod (84) is fixedly connected to the side wall of the clamping block (74) away from the protective cover (4). The limiting rod (84) passes through the L-shaped rod (85) and is rotatably connected at the point of penetration. A circular groove is provided on the upper surface of the clamping block (74). The supporting spring (86) is fixedly connected to the bottom surface of the inner wall of the circular groove. The supporting rod (87) is fixedly connected to the end of the supporting spring (86) away from the circular groove.

7. A rapid metal cutting device for construction engineering according to claim 6, characterized in that: The movable plate (88) is fixedly connected to the end of the support rod (87) away from the support spring (86), the extrusion plate (89) is fixedly connected to the bottom surface of the movable plate (88), the upper surface of the clamping block (74) is provided with a groove, the side wall of the extrusion plate (89) is slidably connected to the inner wall of the groove, and the push plate (810) is slidably connected to the inner wall of the groove.

8. A rapid metal cutting device for construction engineering according to claim 7, characterized in that: The stabilizing device includes a suction cup (91), a hinge rod (92), and a sealing plate (93). The bottom surface of the clamping block (74) has a through hole. The suction cup (91) is fixedly connected to the bottom surface of the clamping block (74) and communicates with the through hole. One end of the hinge rod (92) is hinged to the bottom surface of the push plate (810). The sealing plate (93) is slidably connected to the inner wall of the groove. The other end of the hinge rod (92) is hinged to the upper surface of the sealing plate (93).

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