Sheet metal machining stamping device

Abstract

The utility model relates to the technical field of plate bending, in particular to a stamping device for sheet metal working, which comprises a frame, two symmetrically arranged movable blocks and a cylinder positioned above the middle of the two movable blocks and capable of moving up and down, the movable blocks are rotatably connected with the frame through a first support shaft and are provided with arc-shaped grooves, and the arc-shaped grooves are arranged in the arc-shaped grooves. A first opening and a second opening are formed between the two movable blocks from top to bottom, the size of the first opening is defined as L1, the size of the second opening is defined as L2, the diameter of the cylinder is defined as D, the thickness of the plate is defined as tau, and L2 < D + tau < L1. A plate is placed on the two movable blocks, the plate is driven by the cylinder to be pressed downwards from the first opening, finally abuts against the position of the second opening and continues to be pressed downwards, the movable blocks rotate, the plate is bent to the cylinder through the arc-shaped grooves, the cylinder is formed, the operation process is simple, the device is suitable for cylinder forming of small and medium-sized plates, and the operation labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal bending technology, and in particular to a sheet metal processing stamping device. Background Technology

[0002] In the sheet metal processing industry, shaping flat sheet metal into cylindrical structures is a common forming process. Traditionally, large-scale or batch production typically relies on specialized equipment such as three-roll or four-roll plate bending machines to achieve sheet metal bending and forming. However, such equipment is expensive and requires a large footprint.

[0003] For small and medium-sized enterprises, it is often difficult to invest in high-cost plate rolling machines. Therefore, in actual production, the cylindrical forming of small plates is mostly carried out using the traditional manual hammering method. This method usually uses simple molds (such as round tubes, shafts, etc.), and operators use rubber mallets or wooden mallets to gradually bend the plate along the mold, eventually forming an approximately cylindrical structure.

[0004] However, manual hammering has many problems. On the one hand, the operation relies on manual experience, resulting in poor molding accuracy and consistency, making it difficult to meet the dimensional or concentricity requirements of some structural parts; on the other hand, it has low production efficiency, high labor intensity, and significant work fatigue, making it unsuitable for long-term, high-frequency repetitive operations. Utility Model Content

[0005] The purpose of this utility model is to solve the problems pointed out in the background art and to propose a sheet metal processing stamping device suitable for small enterprises.

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

[0007] A sheet metal stamping device includes a frame, two symmetrically arranged movable blocks, and a cylinder located above and between the two movable blocks that can move up and down. The movable blocks are rotatably connected to the frame via a first support shaft. Each movable block has an arc-shaped groove. From top to bottom, the two movable blocks have a first opening and a second opening. The dimensions of the first opening are defined as L1, the dimensions of the second opening as L2, the cylinder diameter as D, and the sheet metal thickness as τ, where L2 < D + τ < L1.

[0008] The sheet metal stamping device proposed in this utility model has the following advantages: the sheet metal is placed on two movable blocks, and then continuously pressed down by a cylinder. The cylinder drives the sheet metal to be pressed down from the first opening and finally against the second opening. The movable blocks rotate and use the arc groove to bend the sheet metal onto the cylinder to form a cylinder. The operation process is simple and suitable for the cylindrical forming of small and medium-sized sheet metal, reducing the labor intensity of operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the state structure of the present invention. Figure 1 ;

[0010] Figure 2 This is a schematic diagram of the state structure of the present invention. Figure 2 ;

[0011] Figure 3 This is a schematic diagram of the state structure of the present invention. Figure 3 ;

[0012] Figure 4 This is a schematic diagram of the state structure of the present invention. Figure 4 ;

[0013] Figure 5 This is a schematic diagram of the state structure of the present invention. Figure 5 ;

[0014] Figure 6 This is a schematic diagram of one embodiment of the power mechanism of this utility model;

[0015] Figure 7 This is a schematic diagram of the support rod of this utility model in the open state.

[0016] In the figure: 1. Frame; 2. Movable block; 3. First support shaft; 4. Arc groove; 5. Pressure application part; 6. Pressure bearing part; 7. Support surface; 8. First opening; 9. Second opening; 10. Cylinder; 11. Support plate; 12. Thrust spring; 13. Guide shaft; 14. Pressure rod; 15. Cam; 16. Second support shaft; 17. Support frame; 18. Third support shaft; 19. Support rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figures 1-7 A sheet metal stamping device includes a frame 1, two symmetrically arranged movable blocks 2, and a cylinder 10 located above and between the two movable blocks 2 and capable of moving up and down. The movable blocks 2 are rotatably connected to the frame 1 via a first support shaft 3. The movable blocks 2 have an arc-shaped groove 4. From top to bottom, there is a first opening 8 and a second opening 9 between the two movable blocks 2. The dimensions of the first opening 8 are defined as L1, the dimensions of the second opening 9 are defined as L2, the diameter of the cylinder 10 is D, and the thickness of the sheet metal is τ, where L2 < D + τ < L1. This dimension ensures that the cylinder 10 carries the sheet metal through the first opening 8 but does not pass through the second opening 9, so that the cylinder 10 can push the movable blocks 2 to rotate.

[0019] refer to Figures 1-5First, the sheet material is placed flat on the supporting surfaces of the two movable blocks 2. Then, the cylinder 10 begins to move downwards and contacts the upper surface of the sheet material. As the cylinder 10 continues to press down, the sheet material is forced under its drive to gradually press into the clamping area between the two movable blocks 2 along the direction of the first opening 8.

[0020] As the plate continues to move downwards until it abuts against the second opening 9, the cylinder 10 presses down further. At this point, its downward pressure acts on the movable block 2 through the plate. Since the movable block 2 is rotatably connected to the frame 1 via the first support shaft 3, it will rotate outwards around the first support shaft 3 after being subjected to pressure.

[0021] The movable block 2 has an arc-shaped groove 4 inside. During the rotation of the movable block 2, the arc-shaped groove 4 applies a continuous lateral guiding and covering effect to the plate. During this process, the plate is gradually bent and fits against the outer circumference of the cylinder 10. Finally, the plate is bent and shaped along the outer surface of the cylinder 10 to form a cylindrical structure with a regular arc shape.

[0022] The operation process is simple and suitable for cylindrical forming of small and medium-sized plates, reducing the labor intensity of operation.

[0023] The movable block 2 has a pressure-applying part 5 located on the upper part of the arc groove 4, and a pressure-bearing part 6 located on the lower part of the arc groove 4. The cylinder 10 can push the pressure-bearing part 6 to make the movable block 2 rotate around the first support shaft 3, and make the pressure-applying part 5 abut against the outer circumferential surface of the cylinder 10.

[0024] The plate is initially placed above the two movable blocks 2 and in contact with the cylinder 10. When the cylinder 10 begins to move downward, its lower surface first applies downward pressure to the plate, causing the plate to bend initially, while the bottom of the plate contacts the pressure-bearing part 6.

[0025] As the cylinder 10 continues to press down, the downward pressure on the plate is transmitted to the movable block 2 through the pressure-bearing part 6. Since the movable block 2 is connected to the frame 1 through the first support shaft 3, when the pressure-bearing part 6 is subjected to downward thrust, the movable block 2 rotates around the first support shaft 3.

[0026] As the movable block 2 rotates, the pressure part 5 located on its upper part moves accordingly and gradually comes into contact with the outer circumference of the cylinder 10. At this time, the plate is clamped between the cylinder 10 and the pressure part 5, and during the rotation, it covers the outer circumference of the cylinder 10, gradually bending to form an arc-shaped structure, and finally forming a cylinder.

[0027] The movable block 2 has a support surface 7 on top, which makes it easy to place the board on the movable block.

[0028] The stamping device also includes a damping assembly, which includes a support plate 11 and a guide shaft 13. The support plate 11 is supported on the bottom surface of two movable blocks 2. The guide shaft 13 is fixed to the bottom of the support plate 11 and is slidably connected to the frame 1. A thrust spring 12 that can push the support plate 11 to move upward is installed between the support plate 11 and the frame 1.

[0029] When the cylinder 10 presses down and drives the movable block 2 to rotate around the first support shaft 3, the movable block 2 moves down and presses the support plate 11, causing the thrust spring 12 to be compressed, thereby generating a certain damping effect on the rotation process of the movable block 2, avoiding excessive rotation or excessive force, and improving the smoothness of movement and the forming quality of the sheet metal.

[0030] When the cylinder 10 is raised and the downward pressure on the plate and the movable block 2 is relieved, the thrust spring 12 returns to its original position under the drive of the support plate 11, thereby pushing the movable block 2 to rotate and reset, preparing for the next bending operation.

[0031] The stamping device includes a support frame 17 that is slidably connected to the frame 1 and a power mechanism that can drive the support frame 17 to move up and down. One end of the cylinder 10 is fixedly connected to the support frame 17, and a support rod 19 that can be opened and closed is installed between the other end of the cylinder 10 and the support frame 17. The support rod 19 is rotatably connected to the support frame 17 through a third support shaft 18. When the support rod 19 is in the open state, the cylinder can detach from one end of the cylinder 10. When the support rod 19 is in the closed state, it can abut against the cylinder 10.

[0032] To facilitate the unloading of the cylinder, the support rod 19 can be rotated around the third support shaft 18 to the open position during operation, moving it away from the side of the cylinder 10. After the support rod 19 is opened, an open channel is formed at this end of the cylinder 10, allowing the formed cylinder to slide freely along the axial direction of the cylinder 10, thereby achieving rapid unloading.

[0033] When the support rod 19 is in the closed state, it can provide better support for the cylinder 10.

[0034] The power mechanism is a telescopic cylinder, with the cylinder barrel fixed to the frame 1 and the piston rod fixed to the support frame 17. The telescopic cylinder drives the support frame 17 to move up and down.

[0035] To improve the flexibility of the device, the power mechanism includes a cam 15, which is rotatably connected to the frame 1 via a second support shaft 16. The outer circumferential surface of the cam 15 abuts against the top surface of the support frame 17. A pressure rod 14 is fixedly connected to the cam 15, and a pull rope connects the pressure rod 14 to the support frame 17. The worker manually rotates the pressure rod 14, which applies pressure to the support frame 17 via the cam 15 to complete the rolling process of the sheet metal. Since the entire device does not require external power, its application scenarios are more flexible.

[0036] In one implementation, the movable block 2 is detachably mounted on the frame 1, and the cylinder 10 is detachably mounted on the support frame 17. This allows for better replacement of movable blocks 2 and cylinders 10 of different sizes, and can handle the rolling of cylinders of different sizes.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sheet metal stamping device, comprising a frame (1), characterized in that, It also includes two symmetrically arranged movable blocks (2) and a cylinder (10) located above the middle of the two movable blocks (2) and capable of moving up and down. The movable blocks (2) are rotatably connected to the frame (1) through a first support shaft (3). The movable blocks (2) have arc-shaped grooves (4). From top to bottom, there are a first opening (8) and a second opening (9) between the two movable blocks (2). The size of the first opening (8) is defined as L1, the size of the second opening (9) is defined as L2, the diameter of the cylinder (10) is D, and the thickness of the plate is τ, where L2 < D + τ < L1.

2. The sheet metal stamping device according to claim 1, characterized in that, The movable block (2) has a pressure-applying part (5) located on the upper part of the arc groove (4), and a pressure-bearing part (6) located on the lower part of the arc groove (4). The cylinder (10) can push the pressure-bearing part (6) to make the movable block (2) rotate around the first support shaft (3) and make the pressure-applying part (5) abut against the outer circumferential surface of the cylinder (10).

3. The sheet metal stamping device according to claim 2, characterized in that, The movable block (2) has a support surface (7) on its top.

4. The sheet metal stamping device according to claim 2, characterized in that, The stamping device also includes a damping assembly, which includes a support plate (11) and a guide shaft (13). The support plate (11) is supported on the bottom surface of two movable blocks (2). The guide shaft (13) is fixed to the bottom of the support plate (11) and is slidably connected to the frame (1) vertically. A thrust spring (12) capable of pushing the support plate (11) upward is installed between the support plate (11) and the frame (1).

5. A sheet metal stamping apparatus according to any one of claims 1-4, characterized in that, The stamping device includes a support frame (17) that is slidably connected to the frame (1) and a power mechanism that can drive the support frame (17) to move up and down. One end of the cylinder (10) is fixed to the support frame (17), and the other end of the cylinder (10) is connected to the support frame (17) with a support rod (19) that can be opened and closed. The support rod (19) is rotatably connected to the support frame (17) through a third support shaft (18). When the support rod (19) is in the open state, the cylinder can be separated from one end of the cylinder (10). When the support rod (19) is in the closed state, it can abut against the cylinder (10).

6. The sheet metal stamping device according to claim 5, characterized in that, The power mechanism is a power telescopic cylinder, the cylinder barrel of which is fixed to the frame (1) and the piston rod is fixed to the support frame (17).

7. A sheet metal stamping device according to claim 5, characterized in that, The power mechanism includes a cam (15), which is rotatably connected to the frame (1) via a second support shaft (16). The outer peripheral surface of the cam (15) abuts against the top surface of the support frame (17). A pressure rod (14) is fixedly connected to the cam (15), and a pull rope is connected between the pressure rod (14) and the support frame (17).

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