Air pipe iron sheet bending device

Abstract

The utility model discloses an air pipe iron sheet bending device which comprises an operation platform, a fixing mechanism for fixing an iron sheet and a pulley guide rail for limiting the moving direction of the fixing mechanism are installed on the top surface of the operation platform, a pressing plate for bending the iron sheet is arranged on the operation platform, and the pressing plate is movably connected with the operation platform. The iron sheet bending device is simple in structure, the pressing plate is arranged to be movably connected with the operation platform, after an iron sheet is placed at a proper position, the pulley guide rail drives the fixing mechanism to the proper position to fix the iron sheet, finally, the pressing plate is rotated to bend the iron sheet, operation is more convenient and faster, and the working efficiency is improved. And the practicability of the device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of duct processing technology, specifically a duct sheet metal bending device. Background Technology

[0002] As the subway ventilation and air conditioning industry matures, each room in a subway station has corresponding requirements for exhaust and fresh air volumes. However, due to the structural design of some rooms, the ventilation ducts must pass through areas with high air pressure before entering the rooms. Most air conditioning ducts require insulation, necessitating measures to secure the insulation. At the junction of the ductwork and the track area's small platforms, excessive air pressure can cause the insulation to detach. Therefore, a 0.5mm galvanized steel plate needs to be wrapped around the insulation layer of the air conditioning ducts to avoid affecting train safety. However, due to the large size of the ducts within the ductwork, the area of ​​the steel plate used for wrapping is also large. Furthermore, sheet metal is typically rolled up for ease of transport, requiring cutting and bending during processing to meet specific dimensions. Furthermore, due to space limitations, operators cannot use large bending equipment to bend the sheet metal when bending it. They can only bend the sheet metal manually based on experience, which is time-consuming and laborious. The bending angle of the same sheet metal is not consistent and is not precise, making it impossible to achieve the same bending angle for multiple sheets of sheet metal.

[0003] Currently, for large-area sheet metal bending, specialized sheet metal bending machines are typically used. However, these machines are difficult to operate and expensive. Furthermore, their large size makes on-site transportation and placement extremely difficult. Since the demand for bending sheet metal on-site is not particularly high, a simplified sheet metal bending device is being designed to address the sheet metal processing problems encountered in subway electromechanical construction projects. Utility Model Content

[0004] The purpose of this utility model is to provide a duct sheet metal bending device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sheet metal bending device for air ducts, comprising an operating platform, a fixing mechanism for fixing iron sheets and a pulley guide rail for restricting the movement direction of the fixing mechanism are installed on the top surface of the operating platform, and a pressure plate for bending the sheet metal is provided on the operating platform, wherein the pressure plate is movably connected to the operating platform.

[0006] As a further embodiment of this utility model: the surface of the pressure plate is provided with at least one hinge connected to the operating platform, and the hinge is provided with a first handle that drives the pressure plate to rotate.

[0007] As a further embodiment of this utility model: four support frames are fixedly installed at the bottom of the operating platform, and a fixing plate is fixedly installed between the four support frames.

[0008] As a further embodiment of this utility model, a measuring scale is provided on the top surface of the operating platform.

[0009] As a further embodiment of this utility model: the number of pulley guide rails is two, and the two pulley guide rails are symmetrically arranged on two non-adjacent sides of the operating platform.

[0010] As a further embodiment of this utility model: the fixing mechanism includes two limiting blocks and sliding seats disposed on the end faces of the two limiting blocks. The two sliding seats are respectively movably sleeved on the outer circumferential surfaces of the two pulley guides, and the opposite sides of the two limiting blocks are connected to the fixing clamp.

[0011] As a further embodiment of this utility model: both ends of the fixing clamp are equipped with limiting posts that are respectively inserted into two limiting blocks, and the outer circumferential surface of the limiting posts is fitted with torsion springs to assist the fixing clamp in resetting.

[0012] As a further embodiment of this utility model: the fixing clamp is integrally formed from a rectangular block and a circular arc block. A second handle is installed on the circular arc convex surface of the circular arc block. When the rectangular block is in a position perpendicular to the top surface of the operating platform, the surface of the fixing clamp will contact the top surface of the operating platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This application uses a pressure plate on the operating platform. When the iron sheet to be bent is placed in the appropriate position, it can be bent by rotating the pressure plate, making the operation more convenient and faster. Secondly, the fixing mechanism can fix the iron sheet placed on the operating platform, preventing it from shifting during the bending process. At the same time, the position of the fixing mechanism on the operating platform can be adjusted in real time by the pulley guide rail to accommodate iron sheets of different sizes, effectively improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the bending device of this utility model;

[0016] Figure 2 This is a schematic diagram of the top position of the operating platform of this utility model;

[0017] Figure 3 This is a schematic diagram showing the disassembled fixing mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation of the measuring scale of this utility model;

[0019] In the diagram: 1. Operating platform; 10. Fixing plate; 11. Support frame; 12. Measuring ruler; 13. Pulley guide rail; 2. Pressure plate; 20. Hinge; 21. First handle; 3. Fixing clamp; 30. Limiting block; 31. Sliding seat; 32. Second handle. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 In this embodiment of the utility model, a duct sheet metal bending device includes an operating platform 1. The top surface of the operating platform 1 is equipped with a fixing mechanism for fixing iron sheets and a pulley guide rail 13 that restricts the movement direction of the fixing mechanism. There are two pulley guide rails 13, symmetrically arranged on non-adjacent sides of the operating platform 1. The fixing mechanism's position can be fixed or released by changing its state. Furthermore, the pulley guide rails 13 restrict the movement direction of the fixing mechanism. The operating platform 1 is equipped with a pressure plate 2 for bending the iron sheet. The pressure plate 2 is movably connected to the operating platform 1. The pressure plate 2 is a V-shaped strip with an included angle of 90°. In its initial state, the upper surface of the pressure plate 2 is flush with or lower than the upper surface of the operating platform 1, allowing the iron sheet to be bent while remaining flat.

[0022] Please see Figure 1 In one embodiment, preferably, please refer to [link to previous embodiment]. Figure 1 In one embodiment, preferably, the surface of the pressure plate 2 is provided with at least one hinge 20 connected to the operating platform 1. The number of hinges 20 is not limited. In this embodiment, there are two hinges 20. When in use, the overall supporting force of the pressure plate 2 is improved, thereby improving the stability of the structure. The hinge 20 is provided with a first handle 21 that drives the pressure plate 2 to rotate. The hinge 20 consists of two parts, one part is connected to the operating platform 1 and the other part is connected to the pressure plate 2. The two parts of the hinge 20 are rotatably connected, which can ensure that the pressure plate 2 rotates synchronously with the first handle 21. There are two first handles 21. The two first handles 21 are respectively connected to the part of the hinge 20 and the pressure plate 2. When in use, the hinge 20 is rotated by rotating the first handle 21, and then the pressure plate 2 is rotated by the hinge 20 (the principle of the hinge 20 and the rotating rod can be referred to the principle of the connection between the door and the door frame, which will not be elaborated here).

[0023] Please see Figure 1 In one embodiment, preferably, four support frames 11 are fixedly provided at the bottom of the operating platform 1, and a fixing plate 10 is fixedly provided between the four support frames 11. Furthermore, by providing support frames 11 and fixing plates 10, the entire structure is supported by the support frames 11 during use, and is easy to move. The entire support structure is reinforced by the fixing plates 10, which improves the stability during use and transportation.

[0024] Please see Figure 1 In one embodiment, preferably, the top surface of the operating platform 1 is provided with a measuring scale 12. Further, there are three measuring scales 12, located on the side of the top surface of the operating platform 1 away from the pressure plate 2 and on both sides where the pulley guide rail 13 is provided. The bottom of the two sliding seats 31 are respectively slidably disposed above the measuring scales 12 on both sides of the bottom of the operating platform 1 and flush with the scale lines of the measuring scales 12. By setting the measuring scales 12, the length and width of the iron sheet can be accurately measured during use, which not only facilitates the adjustment of the bending point but also improves the bending accuracy.

[0025] Please see Figure 1 and Figure 3 In one embodiment, preferably, the fixing mechanism includes two limiting blocks 30 and sliding seats 31 disposed on the end faces of the two limiting blocks 30. The two sliding seats 31 are respectively movably sleeved on the outer peripheral surfaces of the two pulley guide rails 13. The opposite sides of the two limiting blocks 30 are connected to the fixing clamp 3. There is a gap between the two limiting blocks 30 and the top of the operating platform 1 for the iron sheet to slide. The fixing clamp 3 is rotatably disposed between the two limiting blocks 30. By setting the fixing clamp 3, the limiting blocks 30 and the sliding seats 31, when the iron sheet is placed, the iron sheet slides and moves in the gap formed between the limiting blocks 30, the sliding seats 31 and the operating platform 1. After reaching the appropriate position, the fixing clamp 3 is rotated so that the fixing clamp 3 fixes the iron sheet on the top of the operating platform 1, which effectively improves the convenience of fixing the iron sheet and improves the stability of fixing.

[0026] Please see Figure 3In one embodiment, preferably, both ends of the fixing clamp 3 are equipped with limiting posts that are respectively inserted into the two limiting blocks 30. The outer circumferential surface of the limiting posts is fitted with a torsion spring (not shown in the figure) to assist the fixing clamp 3 in resetting. The two ends of the torsion spring are fixedly connected to the limiting block 30 and the fixing clamp 3 respectively. When the torsion spring is in the initial state, the gap between it and the operating platform 1 is greater than the gap between the limiting block 30 and the operating platform 1, so that the iron sheet can pass through smoothly. When the fixing clamp 3 fixes the iron sheet, the two ends of the torsion spring remain unchanged and rotate itself, while the end of the fixing clamp 3 squeezes the iron sheet. At this time, the torsion spring cannot reset, thus achieving the fixing of the iron sheet. When the fixing clamp 3 no longer fixes the iron sheet, the torsion spring returns to the initial state, and the fixing clamp 3 also completes the reset.

[0027] Please see Figure 3 In one embodiment, preferably, the fixing clamp 3 is integrally formed from a rectangular block and an arc block. A second handle 32 is installed on the arc convex surface of the arc block. When the rectangular block is in a position perpendicular to the top surface of the operating platform 1, the surface of the fixing clamp 3 will contact the top surface of the operating platform 1. The end face of the rectangular block away from the arc block is made of rubber, which can avoid hard contact with the surface of the iron sheet.

[0028] The working principle and usage process of this utility model are as follows: First, place the iron sheet on a suitable position on the top surface of the operating platform 1. Then, use the pulley guide rail 13 to drive the fixing mechanism to a suitable position to fix the iron sheet. Next, rotate the first handle 21 to drive the pressure plate 2 to bend the iron sheet. This makes operation more convenient and faster, effectively improving the practicality of the device. When the iron sheet is placed, it slides within the gap formed between the limit stop 30, the sliding seat 31, and the operating platform 1. After reaching a suitable position, rotate the fixing clamp 3 so that the arc-shaped convex surface at the bottom of the fixing clamp 3 cooperates with the top of the operating platform 1 to fix the iron sheet. This effectively improves the convenience and stability of fixing the iron sheet. By setting a measuring scale 12, the length and width of the iron sheet can be accurately measured during use, facilitating the adjustment of the bending point and improving the bending accuracy.

[0029] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A duct sheet metal bending device, comprising an operating platform (1), characterized in that, The top surface of the operating platform (1) is equipped with a fixing mechanism for fixing iron sheets and a pulley guide rail (13) for restricting the movement direction of the fixing mechanism. The operating platform (1) is provided with a pressure plate (2) for bending iron sheets. The pressure plate (2) and the operating platform (1) are movably connected.

2. The duct sheet metal bending device according to claim 1, characterized in that, The surface of the pressure plate (2) is provided with at least one hinge (20) connected to the operating platform (1), and the hinge (20) is provided with a first handle (21) that drives the pressure plate (2) to rotate.

3. The duct sheet metal bending device according to claim 1, characterized in that, The operating platform (1) has four support frames (11) fixedly installed at its bottom, and a fixing plate (10) is fixedly installed between the four support frames (11).

4. The duct sheet metal bending device according to claim 1, characterized in that, The top surface of the operating platform (1) is provided with a measuring scale (12).

5. The duct sheet metal bending device according to claim 1, characterized in that, The number of pulley guide rails (13) is two, and the two pulley guide rails (13) are symmetrically arranged on the two non-adjacent sides of the operating platform (1).

6. The duct sheet metal bending device according to claim 5, characterized in that, The fixing mechanism includes two limiting blocks (30) and sliding seats (31) provided on the end faces of the two limiting blocks (30). The two sliding seats (31) are respectively movably sleeved on the outer circumferential surfaces of the two pulley guide rails (13). The opposite sides of the two limiting blocks (30) are connected to the fixing clamp (3).

7. The duct sheet metal bending device according to claim 6, characterized in that, Both ends of the fixing clamp (3) are equipped with limiting posts that are respectively inserted into two limiting blocks (30), and the outer circumferential surface of the limiting posts is fitted with torsion springs to assist the fixing clamp (3) in resetting.

8. The duct sheet metal bending device according to claim 6, characterized in that, The fixing clamp (3) is integrally formed from a rectangular block and an arc block. A second handle (32) is installed on the arc convex surface of the arc block. When the rectangular block is in a position perpendicular to the top surface of the operating platform (1), the surface of the fixing clamp (3) will contact the top surface of the operating platform (1).

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