Bending die special for aluminized zinc plate

Abstract

The utility model discloses a special bending die for an aluminized zinc plate, which comprises an upper die and a lower die, a bending part is integrally formed at the lower end of the upper die, a V-shaped bending groove is arranged at the upper end of the lower die, the bending part is clamped in the bending groove, one-way valves are arranged in a first connecting pipe and a second connecting pipe, a piston is movably connected in a device box, and the device box is internally provided with a piston rod. And a driving mechanism for driving the piston to move is mounted in the device box. Through meshing of the gear and the rack, a lubricating agent is driven to be uniformly released to the contact surface of the bending groove in advance in the initial pressing stage of the upper die, a continuous isolation lubricating film is formed, direct friction between an aluminized zinc plate and the die is continuously blocked in the bending process, local temperature rise is reduced, and the bending quality is improved. And the aluminum-zinc alloy coating is prevented from being softened at high temperature and adhered to the surface of the lower die, so that the problems of coating stripping, base material exposure and the like are avoided, and the corrosion resistance and the surface smoothness of the aluminum-zinc plated plate are ensured.

Description

Technical Field

[0001] This utility model relates to the field of bending die technology, and in particular to a bending die for aluminum-zinc coated steel sheets. Background Technology

[0002] Currently, when bending workpieces, the workpiece is usually placed horizontally on the lower die, and then the bending punch is used to press the upper surface of the workpiece vertically downward, so that the lower surface of the workpiece fits into the inclined or vertical bending surface of the lower die, thereby achieving the purpose of bending the workpiece.

[0003] In the existing technology, when bending aluminized zinc sheets, traditional bending dies are still used. When bending with traditional bending dies, due to the low melting point of the aluminum-zinc alloy coating, local high temperatures may be generated during high-pressure and high-speed deformation, which may cause the outer coating of the aluminized zinc sheet to melt and adhere to the surface of the lower die, affecting subsequent processing. Therefore, it is necessary to propose a special bending die for aluminized zinc sheets to address the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the meshing of gears and racks drives the lubricant to be evenly released to the contact surface of the bending groove in advance during the initial pressing of the upper die, forming a continuous insulating lubricating film. This reduces local temperature rise and prevents the outer coating of the aluminum-zinc plate from melting and adhering to the surface of the lower die, thus affecting subsequent processing.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: It includes an upper mold and a lower mold. The lower end of the upper mold is integrally formed with a bending portion. The upper end of the lower mold has a V-shaped bending groove. The bending portion is engaged within the bending groove. Lubrication grooves are provided on both inner walls of the bending groove. A device box is fixedly connected to the side wall of the lower mold. A connecting pipe I and a connecting pipe II are fixedly connected to the outer wall of the device box. One end of the connecting pipe I is connected to the lower mold and communicates with the two sets of lubrication grooves. A one-way valve is installed inside both the connecting pipe I and the connecting pipe II. A piston is movably connected inside the device box, and a drive mechanism for driving the piston is installed inside the device box.

[0008] Preferably, the driving mechanism includes a slider slidably connected inside the device housing, and two sets of connecting rods are symmetrically arranged on the outer wall of the slider, with the ends of the two sets of connecting rods away from the slider being fixedly connected to the piston.

[0009] Preferably, a rotating rod is rotatably connected inside the device housing, and a limiting block is fixedly connected to the end of the rotating rod, with the radius of the limiting block being larger than the radius of the rotating rod.

[0010] Preferably, a limiting ring is sleeved on the outer wall of the rotating rod, the outer diameter of the limiting ring is the same as the outer diameter of the limiting block, a threaded section is opened on the outer wall of the rotating rod and is located between the limiting block and the limiting ring, and the slider is threadedly connected to the threaded section of the rotating rod.

[0011] Preferably, a gear is rotatably connected to the outer wall of the device box, and the gear is coaxially and fixedly connected to the rotating rod.

[0012] Preferably, a rack is fixedly connected to the outer wall of the lower mold, and the rack meshes with a gear.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a folding and packing device for medical non-woven sheets, which has the following beneficial effects:

[0015] 1. This utility model utilizes the meshing of gears and racks to drive the lubricant to be evenly released to the contact surface of the bending groove in advance during the initial pressing of the upper die, forming a continuous isolation lubricating film. During the bending process, it continuously blocks the direct friction between the aluminum-zinc plate and the die, reduces local temperature rise, and prevents the aluminum-zinc alloy coating from softening at high temperature and adhering to the surface of the lower die, thereby avoiding problems such as coating peeling and substrate exposure, and ensuring the corrosion resistance and surface smoothness of the aluminum-zinc plate.

[0016] 2. This utility model utilizes the cooperation between the threaded section of the rotating rod and the slider, as well as the self-replenishing mechanism of the piston's reciprocating motion. The lubricant is automatically injected before bending and automatically withdrawn to replenish after bending, requiring no manual intervention throughout the entire process. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a special bending die for aluminum-zinc coated steel sheet proposed in this utility model;

[0018] Figure 2 for Figure 1 Structural diagram.

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of components such as the central assembly box, connecting pipe, and gears.

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the central device box.

[0021] In the diagram: 1. Upper die; 2. Lower die; 3. Bending section; 4. Device box; 5. Connecting pipe one; 6. Connecting pipe two; 7. Bending groove; 8. Lubrication groove; 9. Gear; 10. Rack; 11. Limiting ring; 12. Limiting block; 13. Sliding block; 14. Connecting rod; 15. Piston; 16. Rotating rod. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution:

[0024] Reference Figure 1-4 A special bending die for aluminum-zinc coated sheet includes an upper die 1 and a lower die 2. The lower end of the upper die 1 is integrally formed with a bending part 3. The upper end of the lower die 2 is provided with a V-shaped bending groove 7. The bending part 3 is engaged in the bending groove 7. Lubrication grooves 8 are provided on both sides of the inner wall of the bending groove 7. A device box 4 is fixedly connected to the side wall of the lower die 2. A connecting pipe 1 5 and a connecting pipe 2 6 are fixedly connected to the outer wall of the device box 4 respectively. One end of the connecting pipe 1 5 is connected to the lower die 2 and communicates with the two sets of lubrication grooves 8. A one-way valve is installed in both the connecting pipe 1 5 and the connecting pipe 2 6. A piston 15 is movably connected in the device box 4. A drive mechanism for driving the piston 15 is installed in the device box 4.

[0025] Furthermore, the lubrication grooves 8 are evenly distributed along the length of the bending grooves 7 and form a continuous lubrication channel with the connecting pipe 5. During the bending process, the lubricant is controlled by the drive mechanism to seep out from the lubrication grooves 8, which can form an isolation film on the contact surface between the aluminum-zinc plate and the mold, reduce the coefficient of friction, suppress local temperature rise, and thus prevent the coating from melting and adhering.

[0026] The driving mechanism includes a slider 13 slidably connected in the device box 4. Two sets of connecting rods 14 are symmetrically arranged on the outer wall of the slider 13. The ends of the two sets of connecting rods 14 away from the slider 13 are fixedly connected to the piston 15. A rotating rod 16 is rotatably connected in the device box 4. A limit block 12 is fixedly connected to the end of the rotating rod 16, and the radius of the limit block 12 is larger than the radius of the rotating rod 16. A limit ring 11 is sleeved on the outer wall of the rotating rod 16. The outer diameter of the limit ring 11 is the same as the outer diameter of the limit block 12. A threaded section is opened on the outer wall of the rotating rod 16 and is located between the limit block 12 and the limit ring 11. The slider 13 is threadedly connected to the threaded section of the rotating rod 16.

[0027] Furthermore, by rotating the rotating rod 16, the slider 13 and the piston 15 on one side slide. When the piston 15 slides to the left, the lubricant in the device box 4 can be injected into the lubrication groove 8. When the piston 15 slides to the right, the external lubricant can be drawn into the device box 4 through the connecting pipe 2 6 for subsequent use. The length and angle of the threaded section set on the outer wall of the rotating rod 16 are designed to avoid injecting too much lubricant and causing waste.

[0028] A gear 9 is rotatably connected to the outer wall of the device box 4. The gear 9 is coaxially and fixedly connected to the rotating rod 16. A rack 10 is fixedly connected to the outer wall of the lower mold 2. The rack 10 and the gear 9 mesh with each other.

[0029] Furthermore, the length of the rack 10 is designed to be proportional to the stroke of the upper die 1. When the upper die 1 slides downward, the rack 10 drives the gear 9 to rotate, so that the lubricant is released into the lubrication groove 8 in advance before the bending begins, effectively covering the contact surface between the aluminum-zinc plate and the die, and preventing the coating from being damaged by high-pressure friction in the initial stage.

[0030] In practical use, the working principle of this utility model is as follows:

[0031] The operator lays the galvanized sheet flat on the surface of the lower mold 2. When the upper mold 1 begins to press down, the bending part 3 gradually embeds into the bending groove 7, causing the galvanized sheet to undergo plastic deformation. Before the bending part 3 contacts the end face of the galvanized sheet, the rack 10 fixed to the side wall of the lower mold 2 moves down with the upper mold 1 and meshes with the gear 9, driving the gear 9 to rotate the rotating rod 16, which in turn drives the slider 13 to slide, and then pushes the piston 15 to the left through the connecting rod 14. When the piston 15 moves, it squeezes the lubricant in the extrusion device box 4. Before bending, the lubricant is unidirectionally transported to the lubrication groove 8 through the connecting pipe 5, and evenly seeps out at the contact surface between the bending groove 7 and the galvanized sheet, forming a layer of insulating lubricating film.

[0032] During the bending process, the lubricating film effectively isolates the surface of the aluminum-zinc plate from direct contact with the mold, reducing frictional resistance and local temperature rise. The lubrication grooves 8 on both sides of the bending groove 7 continuously release lubricant along the length of the bending area, ensuring that the coating does not reach a melting state due to high pressure deformation, thereby preventing the aluminum-zinc alloy coating from adhering to the mold surface.

[0033] When the upper die 1 completes the bending and returns to its original position, the rack 10 moves in the opposite direction, the drive gear 9 drives the rotating rod 16 to reverse, and the slider 13 slides to the right, pulling the piston 15 to its original position. At this time, external lubricant is drawn into the device box 4 through the connecting pipe 2 6 for storage, replenishing lubricant for the next bending operation.

[0034] In summary, this device achieves automatic synchronization between bending action and lubricant release through the meshing transmission of gear 9 and rack 10. The lubricant covers the contact area in advance at the beginning of bending, suppressing the instantaneous temperature rise caused by high-pressure friction. After bending, it automatically resets and replenishes the lubricant, which not only ensures the integrity of the coating when bending aluminum-zinc plate, but also improves processing efficiency.

[0035] In summary, this device achieves coordinated operation of the internal and external double-sided cleaning mechanisms through a gear transmission system, and, combined with elastic pressure compensation and manual fine-tuning mechanisms, completely solves the problem of insect carcasses remaining on the inner and outer walls of the power grid.

[0036] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A special bending die for aluminized zinc plate, comprising an upper die (1) and a lower die (2), characterized in that, The upper mold (1) has an integrally formed bending part (3) at the lower end. The lower mold (2) has a V-shaped bending groove (7) at the upper end. The bending part (3) is engaged in the bending groove (7). Lubrication grooves (8) are provided on both sides of the inner wall of the bending groove (7). A device box (4) is fixedly connected to the side wall of the lower mold (2). A connecting pipe one (5) and a connecting pipe two (6) are fixedly connected to the outer wall of the device box (4). One end of the connecting pipe one (5) is connected to the lower mold (2) and communicates with the two sets of lubrication grooves (8). A one-way valve is installed in both the connecting pipe one (5) and the connecting pipe two (6). A piston (15) is movably connected in the device box (4). A drive mechanism for driving the piston (15) is installed in the device box (4).

2. The special bending die for aluminized zinc plate according to claim 1, characterized in that, The driving mechanism includes a slider (13) slidably connected in the device box (4). Two sets of connecting rods (14) are symmetrically arranged on the outer wall of the slider (13). The ends of the two sets of connecting rods (14) away from the slider (13) are fixedly connected to the piston (15).

3. The special bending die for aluminized zinc plate according to claim 2, characterized in that, The device box (4) is rotatably connected to a rotating rod (16), and a limiting block (12) is fixedly connected to the end of the rotating rod (16), and the radius of the limiting block (12) is larger than the radius of the rotating rod (16).

4. The special bending die for aluminized zinc plate according to claim 3, characterized in that, The outer wall of the rotating rod (16) is fitted with a limiting ring (11), the outer diameter of the limiting ring (11) is the same as the outer diameter of the limiting block (12), the outer wall of the rotating rod (16) is provided with a threaded section, and is located between the limiting block (12) and the limiting ring (11), and the slider (13) is threadedly connected to the threaded section of the rotating rod (16).

5. A special bending die for aluminized zinc plate according to claim 4, characterized in that, The outer wall of the device box (4) is rotatably connected to a gear (9), and the gear (9) is coaxially and fixedly connected to the rotating rod (16).

6. A special bending die for aluminized zinc plate according to claim 5, characterized in that, A rack (10) is fixedly connected to the outer wall of the lower mold (2), and the rack (10) meshes with the gear (9).

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