An apparatus for cutting sheet material

Abstract

The utility model relates to cutting equipment technical field discloses an equipment for cutting board, including work table, the top right side fixedly connected with cutting mechanism of work table, the top left side fixedly connected with fixed mechanism of work table, the bottom four corners of fixed mechanism all are fixedly connected with sliding column, the outside of multiple sliding columns is connected with lifting mechanism, the top inner wall of lifting mechanism installs limit component, the fixed mechanism includes fixed plate, the top fixedly connected with guide rail of fixed plate, the outside sliding connection of guide rail has sliding block. In the utility model, the fixed of board when cutting is realized, and then the size of the cut board is ensured accurate and faultless, the cutout is smooth and even, greatly improves the processing quality of board, effectively reduces the rejection rate, provides high-quality basic material for subsequent assembly, processing and other procedures, improves the overall product quality.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and in particular to a device for cutting sheet metal. Background Technology

[0002] Cutting equipment is a specialized tool used to separate or cut various materials according to predetermined requirements. It has wide applications in many fields such as industrial production, construction, artistic creation, and daily life. When making various types of furniture, it is necessary to cut boards of different materials (such as wood, artificial boards, etc.) into specific sizes and shapes for assembling various furniture parts, such as tabletops, side panels, and drawer panels. For example, to create a custom wardrobe, the boards need to be precisely cut to fit different spaces and functional needs.

[0003] A search revealed Chinese patent publication number CN219484355U, which discloses a cutting device for building materials and pipes. The device includes a main body with a horizontal rail inside. The horizontal rail has teeth, a fixed seat on the left side of the horizontal rail, and a movable seat on the horizontal rail. Clamping mechanisms are installed within the fixed and movable seats. Pipe conical blocks are located inside the fixed and movable seats. A front-to-back adjusting screw mechanism is located at the top of the main body. This mechanism includes a screw seat, a screw, a wheel II, and a movable block. A top rod is located on one side of the movable block, with a graduated horizontal bar on the top rod. A moving part is located on the graduated horizontal bar, and a branch pipe and a lifting rod are located below the moving part. A rack is located on the side of the lifting rod, and a gear II is installed inside the branch pipe. A handle is located on the gear II. A motor is fixed to the lifting rod, and a cutting blade is mounted on the motor. A dust collection mechanism is located outside the main body. This invention achieves the function of cutting building materials and pipes, avoiding large swings or shaking during cutting, precisely adjusting the cutting position, and collecting dust.

[0004] The aforementioned patent mentions that "by setting up a dust extraction mechanism, the dust inside the main body is adsorbed during the cutting process using a dust extraction pipe, reducing dust emission and thus minimizing the impact on the worker's body." While the patent solves the problem of dust adsorption during cutting, in the prior art, the sheet metal is difficult to fix during some cutting processes and is prone to displacement, which can easily cause the tool's trajectory to deviate from the preset path. This results in deviations between the cut sheet metal dimensions and design requirements, uneven and non-straight cuts, seriously affecting the processing quality of the sheet metal, reducing the product qualification rate, increasing the scrap rate and production costs. Therefore, a device for cutting sheet metal is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a device for cutting sheet metal, which aims to improve the problem of difficulty in fixing sheet metal when cutting some sheet metal in the prior art.

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

[0007] A device for cutting sheet metal includes a workbench, a cutting mechanism fixedly connected to the top right side of the workbench, a fixing mechanism fixedly connected to the top left side of the workbench, sliding columns fixedly connected to the bottom four corners of the fixing mechanism, a lifting mechanism slidably connected to the outside of a plurality of sliding columns, and a limit component installed on the top inner wall of the lifting mechanism.

[0008] The fixing mechanism includes a fixing plate, a guide rail fixedly connected to the top of the fixing plate, a slider slidably connected to the outside of the guide rail, a moving block fixedly connected to the right side of the slider, a second motor fixedly connected to the inner wall of the right side of the moving block, a rotating column fixedly connected to the drive end of the second motor, sliding blocks slidably connected to the left and right sides of the inside of the rotating column, and square openings on the left and right sides of the inside of the moving block, with clamping plates slidably connected to the inner walls of the left and right sides of the square openings.

[0009] The above technical solution achieves the function of stable fixing of the board. The fixing plate provides a basic platform for placing the board. The guide rail and slider work together to flexibly adjust the position of the moving block and clamping plate according to the size of the board. The motor drives the rotating column, which drives the clamping plate to open and close through the sliding block, ensuring that boards of different specifications can be stably clamped.

[0010] As a further description of the above technical solution:

[0011] The cutting mechanism includes a motor, the bottom of which is fixedly connected to the top right side of the workbench. A drive wheel is fixedly connected to the drive end of the motor, and a belt is fitted around the drive wheel. A support frame is fixedly connected to the top of the workbench, and a rotating rod is rotatably connected inside the support frame. A driven wheel is fixedly connected to the front side of the rotating rod, and a cutting blade is fixedly connected to the outside of the driven wheel. A control panel is fixedly connected to the top of the support frame.

[0012] The above technical solution achieves efficient and precise cutting of sheet materials. Motor 1 serves as the power core, driving the drive wheel to power the belt, which smoothly transmits power to the driven wheel, causing the cutting blade to rotate at high speed. The support frame firmly supports the rotating rod, ensuring stability during the cutting process. The control panel provides operators with the ability to flexibly adjust cutting parameters to meet the cutting needs of different sheet materials.

[0013] As a further description of the above technical solution:

[0014] The lifting mechanism includes a fixed box, the inside of which is slidably connected to the outside of the sliding column. A motor is fixedly connected to the left inner wall of the fixed box. A rotating disk is fixedly connected to the drive end of the motor. A rotating rod is fixedly connected to the right side of the rotating disk. A rotating plate is rotatably connected to the outside of the rotating rod. A connecting plate is rotatably connected to the bottom of the rotating plate. An arc-shaped groove is opened inside the connecting plate. A connecting column is rotatably connected to the front inside of the arc-shaped groove. Support columns are fixedly connected to both the left and right sides of the connecting column.

[0015] The above technical solution realizes the lifting function of the worktable. The three motors drive the rotating disk to rotate, and the rotating rod, rotating plate and connecting plate work together to convert the circular motion into the vertical linear motion of the connecting column and support column, thereby driving the worktable to rise and fall smoothly to adapt to the diverse requirements of worktable height when processing different materials.

[0016] As a further description of the above technical solution:

[0017] The tops of the two support columns are fixedly connected to the bottom left and right sides of the workbench, and the outside of the two support columns are slidably connected to the inside left and right sides of the fixed box.

[0018] The above technical solution achieves a stable connection and guiding function between the workbench and the lifting mechanism. The top of the support column is fixed to the workbench, while the outside slides inside the fixed box. It not only bears the weight of the workbench and the plate, but also ensures that the workbench moves smoothly along the predetermined track during the lifting process, ensuring accurate and smooth lifting action.

[0019] As a further description of the above technical solution:

[0020] The limiting component includes a support plate, the bottom and top of which are fixedly connected to the top inner wall of the fixed box, and a support rod is fixedly connected to the right side of the support plate, with the outer side of the support rod contacting the inner wall of the arc-shaped groove.

[0021] The above technical solution achieves the safety limit function of the lifting mechanism. The support plate firmly supports the support rod. When the worktable is lifted, the support rod contacts the inner wall of the arc groove, which strictly limits the movement range of the connecting plate, prevents the lifting mechanism from being damaged due to excessive movement, ensures stable operation of the equipment, and extends the service life of the equipment.

[0022] As a further description of the above technical solution:

[0023] Limiting rods are fixedly connected to the left and right sides of the movable block, and the two sliding blocks are slidably connected to the left and right sides of the outside of the limiting rods.

[0024] The above technical solution achieves precise control of the sliding block's movement direction. The limiting rod passes through the sliding block, restricting it to slide left and right only along the direction of the limiting rod. This ensures that when the rotating column rotates, the sliding block drives the clamping plate to move smoothly along a predetermined trajectory, accurately realizing the clamping and releasing operation of the plate.

[0025] As a further description of the above technical solution:

[0026] The bottom of the sliding block is slidably connected to the inside of the moving block, and the rear side of the clamping plate is fixedly connected to the rear side of the sliding block;

[0027] The above technical solution realizes the coordinated movement of the clamping plate and the sliding block. The bottom of the sliding block slides inside the moving block, and the rear side of the clamping plate is fixed to the sliding block. When the sliding block slides left and right under the action of the rotating column and the limiting rod, the clamping plate moves synchronously and works closely together to complete the fixing action of the plate, and ensures that the movement of the clamping plate is stable and reliable.

[0028] As a further description of the above technical solution:

[0029] The left side of the rotating column is rotatably connected to the right side of the slider, and the bottom of the moving block is slidably connected to the top of the fixed plate;

[0030] The above technical solution achieves stable support for the rotating column and flexible sliding of the moving block. The left side of the rotating column is rotatably connected to the slider to ensure smooth rotation of the rotating column. The bottom of the moving block slides on the top of the fixed plate, allowing the entire fixing mechanism to flexibly adjust its position according to the size of the plate, thus enhancing the equipment's adaptability to different specifications of plates.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, the sheet material is placed on the fixed plate, and the motor is started. Its drive end drives the rotating column to rotate. The sliding block inside the rotating column, under the restriction of the limiting rod, will slide left and right inside the rotating column as it rotates. Since the sliding block is fixedly connected to the clamping plate, and the clamping plate slides within the square opening, the left and right sliding of the sliding block causes the clamping plate to move towards or away from each other, thereby fixing the sheet material during cutting. This ensures that the cut sheet material is accurate in size and the cut is smooth and flat, greatly improving the processing quality of the sheet material, effectively reducing the scrap rate, providing high-quality basic materials for subsequent assembly, processing and other processes, and improving the overall quality of the product.

[0033] 2. In this utility model, the motor starts in three stages, driving the rotating disk to rotate. The rotating rod on the right side of the rotating disk rotates together with the rotating disk, and the rotating rod drives the rotating plate to make circular motion around its connection point with the rotating disk. The bottom of the rotating plate is rotatably connected to the connecting plate, and the connecting plate has an arc-shaped groove. The connecting column rotates in the arc-shaped groove. When the rotating plate moves, it drives the connecting column and the support column to move up and down through the connecting plate, realizing the lifting and lowering of the worktable. This makes the operation more convenient, greatly improves the comfort of employees when operating the equipment, reduces errors caused by uncomfortable operating postures, and improves work efficiency. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of a device for cutting sheet metal according to the present invention.

[0035] Figure 2 This is a schematic diagram of the slider structure of a device for cutting sheet metal according to the present invention;

[0036] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0037] Figure 4 This is a schematic diagram of the sliding column structure of a cutting plate device proposed in this utility model;

[0038] Figure 5 for Figure 4 Enlarged view of point B in the image.

[0039] Legend:

[0040] 1. Workbench; 2. Cutting mechanism; 21. Motor 1; 22. Drive wheel; 23. Belt; 24. Support frame; 25. Rotating rod; 26. Driven wheel; 27. Cutting blade; 28. Control panel; 3. Fixing mechanism; 31. Fixing plate; 32. Guide rail; 33. Slider; 34. Moving block; 35. Motor 2; 36. Rotating column; 37. Sliding block; 38. Limiting rod; 39. Square opening; 310. Clamping plate; 4. Lifting mechanism; 41. Fixing box; 42. Motor 3; 43. Rotary disk; 44. Rotating rod; 45. Rotating plate; 46. Connecting plate; 47. Arc groove; 48. Connecting column; 49. Supporting column; 5. Limiting assembly; 51. Support plate; 52. Supporting rod; 6. Sliding column. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Reference Figures 1 to 3 An embodiment of this utility model is provided: a device for cutting plates, including a workbench 1, a cutting mechanism 2 fixedly connected to the top right side of the workbench 1, a fixing mechanism 3 fixedly connected to the top left side of the workbench 1, sliding columns 6 fixedly connected to the bottom four corners of the fixing mechanism 3, a lifting mechanism 4 slidably connected to the outside of the multiple sliding columns 6, and a limit component 5 installed on the top inner wall of the lifting mechanism 4.

[0043] The fixing mechanism 3 includes a fixing plate 31. A guide rail 32 is fixedly connected to the top of the fixing plate 31. A slider 33 is slidably connected to the outside of the guide rail 32. A moving block 34 is fixedly connected to the right side of the slider 33. A second motor 35 is fixedly connected to the inner wall of the right side of the moving block 34. A rotating column 36 is fixedly connected to the drive end of the second motor 35. Sliding blocks 37 are slidably connected to both the left and right sides of the interior of the rotating column 36. The sliding blocks 37 are constrained by the limiting rod 38 and slide left and right inside, converting the rotational motion of the rotating column 36 into the linear motion of the sliding blocks 37, thereby controlling the opening and closing of the clamping plate 310. Square openings are provided on both the left and right sides of the interior of the moving block 34. The square opening 39 has clamping plates 310 slidably connected to the inner walls of both sides. Limiting rods 38 are fixedly connected to the left and right sides of the moving block 34, passing through the sliding block 37 and restricting its movement direction. This ensures that the sliding block 37 can only slide left and right along the direction of the limiting rods 38, guaranteeing that the clamping plates 310 move smoothly along a predetermined trajectory, accurately clamping or releasing the material. The interior of the two sliding blocks 37 is slidably connected to the exterior left and right sides of the limiting rods 38, and the bottom of the sliding blocks 37 is slidably connected to the interior of the moving block 34. The clamping plates 310 slide within the square opening 39, and through their connection with the sliding blocks 37, they achieve the clamping and releasing operations on the material. The surface of the clamping plates 310 typically has an anti-slip design to enhance the fixing effect on the material. The rear side of the clamping plates 310 is fixedly connected to the rear side of the sliding blocks 37. The left side of the rotating column 36 is rotatably connected to the right side of the slider 33, and the bottom of the moving block 34 is slidably connected to the top of the fixed plate 31.

[0044] Specifically, the cooperation between guide rail 32 and slider 33 allows operators to easily adjust the positions of moving block 34 and clamping plate 310 according to the size of the sheet material, enhancing the equipment's adaptability to sheet material specifications. Motor 35 drives rotating column 36 to rotate. Under the constraint of limit rod 38, sliding block 37 converts the rotation of rotating column 36 into linear motion, causing clamping plate 310 to slide smoothly within square opening 39, achieving precise clamping and releasing operations. The anti-slip design on the surface of clamping plate 310 further ensures that the sheet material will not shift during cutting, providing a stable processing foundation for the cutting operation and guaranteeing cutting accuracy and quality.

[0045] Reference Figure 1 The cutting mechanism 2 includes a motor 21, which serves as the cutting power source. After starting, the motor drives the drive wheel 22 to rotate at high speed with its strong torque, providing initial power for the cutting blade 27. Its power and speed determine the cutting efficiency and applicability to different materials. The bottom of the motor 21 is fixedly connected to the top right side of the worktable 1. The drive wheel 22 is fixedly connected to the drive end of the motor 21. A belt 23 is fitted around the drive wheel 22. A support frame 24 is fixedly connected to the top of the worktable 1. A rotating rod 25 is rotatably connected inside the support frame 24. A driven wheel 26 is fixedly connected to the front side of the rotating rod 25. The drive wheel 22 transmits the rotational motion of the motor 21 to the belt 23. The belt 23 uses friction to drive the driven wheel 26, achieving smooth power transmission and ensuring a stable cutting process. The cutting blade 27 is fixedly connected to the outside of the driven wheel 26. The support frame 24 provides stable support for the rotating rod 25, allowing it to rotate smoothly. The rotating rod 25 carries the driven wheel 26 and the cutting blade 27, converting the rotation of the driven wheel 26 into the cutting action of the cutting blade 27. The top of the support frame 24 is fixedly connected to the control panel 28. The operator can input commands through the control panel 28 to precisely control the speed, start and stop parameters of the motor 21 to adapt to the cutting needs of different materials and thicknesses of plates and improve the operational flexibility of the equipment.

[0046] Specifically, motor 21 serves as the power source, driving the drive wheel 22 to rotate at high speed with its powerful torque, providing initial power for the entire cutting process. Its adjustable power and speed allow the equipment to adapt to materials of varying hardness and thickness. The drive wheel 22, via belt 23, smoothly transmits power to the driven wheel 26, ensuring stable power transmission and preventing jamming or vibration during cutting, thus guaranteeing cutting quality. The support frame 24 provides stable support for the rotating rod 25, allowing the driven wheel 26 and cutting blade 27 to rotate smoothly, converting rotational motion into cutting action to process the material. The control panel 28 enables operators to precisely control motor 21, adjusting its speed and controlling its start / stop to meet the cutting process requirements of different materials, greatly improving the equipment's operational flexibility and applicability, and adapting to diverse production and processing scenarios.

[0047] Reference Figure 1 , Figure 4 and Figure 5 The lifting mechanism 4 includes a fixed box 41, which is slidably connected to the outside of the sliding column 6. A motor 3 42 is fixedly connected to the inner left side of the fixed box 41. After the motor 3 42 is started, it drives the rotating disk 43 to rotate. Its output torque and speed determine the lifting speed and load capacity of the worktable 1. The drive end of the motor 3 42 is fixedly connected to the rotating disk 43. A rotating rod 44 is fixedly connected to the right side of the rotating disk 43. A rotating plate 45 is rotatably connected to the outside of the rotating rod 44. The rotating disk 43 transmits the rotational motion of the motor 3 42 to the rotating rod 44. The rotating rod 44 drives the rotating plate 45 to perform circular motion, realizing the conversion and transmission of power. A connecting plate 46 is rotatably connected to the bottom of the rotating plate 45. An arc-shaped groove 47 is opened inside the connecting plate 46. A connecting column 48 is rotatably connected to the front side of the arc-shaped groove 47. Support columns 49 are fixedly connected to both sides of the connecting column 48. The tops of the two support columns 49 are fixedly connected to the worktable. On the bottom left and right sides of the worktable 1, the connecting plate 46 converts the circular motion of the rotating plate 45 into the vertical linear motion of the connecting column 48 and the support column 49, thereby realizing the lifting and lowering of the worktable 1. The two support columns 49 are externally slidably connected to the inside left and right sides of the fixed box 41, and their tops are fixed to the bottom of the worktable 1. They slide up and down within the fixed box 41, directly bearing the weight of the worktable 1 and the plate. The lifting and lowering function of the worktable 1 is realized by moving up and down. The limiting component 5 includes a support plate 51. The bottom and top of the support plate 51 are fixedly connected to the top inner wall of the fixed box 41. A support rod 52 is fixedly connected to the right side of the support plate 51, providing stable support for the support rod 52 and ensuring that its position is stable when restricting the movement of the connecting plate 46, without shaking or displacement. The outside of the support rod 52 contacts the inner wall of the arc groove 47. During the lifting and lowering of the worktable 1, the movement range of the connecting plate 46 in the direction of the arc groove 47 is limited, preventing the lifting mechanism 4 from being damaged due to excessive movement.

[0048] Specifically, it achieves stable and precise lifting and lowering of the worktable 1, as well as safety protection functions. Motor 3 42 drives the rotary disk 43 to rotate, and through a series of transmissions via the rotating rod 44, rotating plate 45, and connecting plate 46, the circular motion is converted into the vertical linear motion of the support column 49, thereby driving the worktable 1 to lift smoothly. Its lifting speed and load-bearing capacity can be flexibly adjusted according to the output torque and speed of motor 3 42 to adapt to the height requirements of the worktable 1 during the processing of different materials. The support plate 51 in the limiting assembly 5 firmly supports the support rod 52. During the lifting and lowering of the worktable 1, the support rod 52 closely fits the inner wall of the arc-shaped groove 47, strictly limiting the movement range of the connecting plate 46, effectively preventing damage to the lifting mechanism 4 due to excessive movement, ensuring stable equipment operation, extending equipment service life, and providing a safe and reliable working platform for cutting operations.

[0049] Working principle: When motor 21 starts, its drive end drives the drive wheel 22 to rotate. The drive wheel 22 transmits power to the driven wheel 26 through the belt 23. Therefore, the rotation of the driven wheel 26 drives the rotating rod 25 to rotate, which in turn causes the cutting blade 27 fixed on the rotating rod 25 to rotate at high speed, thereby realizing the cutting operation of the plate. The control panel 28 is used to control the operating parameters of motor 21, such as speed, to adapt to different cutting needs.

[0050] The sheet material is placed on the fixed plate 31, and the motor 35 is started. Its drive end drives the rotating column 36 to rotate. The sliding block 37 inside the rotating column 36, limited by the limit rod 38, slides left and right inside the rotating column 36 as it rotates. Since the sliding block 37 is fixedly connected to the clamping plate 310, and the clamping plate 310 slides within the square opening 39, the left and right sliding of the sliding block 37 causes the clamping plate 310 to move in opposite directions, thereby clamping and releasing the sheet material.

[0051] Motor 3 42 starts, driving the rotating disk 43 to rotate. The rotating rod 44 on the right side of the rotating disk 43 rotates together with the rotating disk 43, and the rotating rod 44 drives the rotating plate 45 to make circular motion around its connection point with the rotating disk 43. The bottom of the rotating plate 45 is rotatably connected to the connecting plate 46. The connecting plate 46 has an arc-shaped groove 47, and the connecting column 48 rotates in the arc-shaped groove 47. When the rotating plate 45 moves, it drives the connecting column 48 and the support column 49 to move up and down through the connecting plate 46, thereby realizing the lifting and lowering of the worktable 1.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for cutting sheet metal, comprising a workbench (1), characterized in that: A cutting mechanism (2) is fixedly connected to the top right side of the workbench (1), and a fixing mechanism (3) is fixedly connected to the top left side of the workbench (1). Sliding columns (6) are fixedly connected to the bottom four corners of the fixing mechanism (3). A lifting mechanism (4) is slidably connected to the outside of the multiple sliding columns (6). A limit component (5) is installed on the top inner wall of the lifting mechanism (4). The fixing mechanism (3) includes a fixing plate (31), a guide rail (32) is fixedly connected to the top of the fixing plate (31), a slider (33) is slidably connected to the outside of the guide rail (32), a moving block (34) is fixedly connected to the right side of the slider (33), a motor (35) is fixedly connected to the inner wall of the right side of the moving block (34), a rotating column (36) is fixedly connected to the drive end of the motor (35), a sliding block (37) is slidably connected to the left and right sides of the interior of the rotating column (36), a square opening (39) is opened on the left and right sides of the interior of the moving block (34), and a clamping plate (310) is slidably connected to the inner walls of the left and right sides of the square opening (39).

2. The device for cutting sheet metal according to claim 1, characterized in that: The cutting mechanism (2) includes a motor (21), the bottom of which is fixedly connected to the top right side of the workbench (1). The drive end of the motor (21) is fixedly connected to a drive wheel (22), and a belt (23) is sleeved on the outside of the drive wheel (22). A support frame (24) is fixedly connected to the top of the workbench (1). A rotating rod (25) is rotatably connected inside the support frame (24). A driven wheel (26) is fixedly connected to the front side of the rotating rod (25). A cutting blade (27) is fixedly connected to the outside of the driven wheel (26). A control panel (28) is fixedly connected to the top of the support frame (24).

3. The device for cutting sheet metal according to claim 1, characterized in that: The lifting mechanism (4) includes a fixed box (41), the inside of which is slidably connected to the outside of the sliding column (6). A motor (42) is fixedly connected to the left inner wall of the fixed box (41). A rotating disk (43) is fixedly connected to the drive end of the motor (42). A rotating rod (44) is fixedly connected to the right side of the rotating disk (43). A rotating plate (45) is rotatably connected to the outside of the rotating rod (44). A connecting plate (46) is rotatably connected to the bottom of the rotating plate (45). An arc-shaped groove (47) is provided inside the connecting plate (46). A connecting column (48) is rotatably connected to the front inside of the arc-shaped groove (47). Support columns (49) are fixedly connected to both the left and right sides of the connecting column (48).

4. The device for cutting sheet metal according to claim 3, characterized in that: The tops of the two support columns (49) are fixedly connected to the bottom left and right sides of the workbench (1), and the outside of the two support columns (49) are slidably connected to the inside left and right sides of the fixed box (41).

5. The device for cutting sheet metal according to claim 3, characterized in that: The limiting component (5) includes a support plate (51), the bottom and top of which are fixedly connected to the top inner wall of the fixed box (41), and a support rod (52) is fixedly connected to the right side of the support plate (51), the outside of which is in contact with the inner wall of the arc groove (47).

6. The device for cutting sheet metal according to claim 1, characterized in that: Limiting rods (38) are fixedly connected to the left and right sides of the movable block (34), and the two sliding blocks (37) are internally slidably connected to the left and right sides of the limiting rods (38).

7. The device for cutting sheet metal according to claim 1, characterized in that: The bottom of the sliding block (37) is slidably connected to the inside of the moving block (34), and the rear side of the clamping plate (310) is fixedly connected to the rear side of the sliding block (37).

8. The device for cutting sheet metal according to claim 1, characterized in that: The left side of the rotating column (36) is rotatably connected to the right side of the slider (33), and the bottom of the moving block (34) is slidably connected to the top of the fixed plate (31).

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