Bending springback-preventing sheet metal forming die

Abstract

This utility model provides a sheet metal forming mold for bending with anti-springback properties, belonging to the field of sheet metal forming. It includes a support plate, a mold frame fixedly connected to the top of the support plate, an inner extension plate fixedly connected to one side of the mold frame, an electric push rod fixedly connected to the bottom of the inner extension plate, a limit plate fixedly connected to the bottom end of the electric push rod, and a heating column fixedly connected inside the mold frame. This utility model, through the arrangement of the support plate, mold frame, inner extension plate, electric push rod, limit plate, heating column, outer extension plate, hydraulic power supply device, hydraulic rod, and bending block, makes the sheet metal forming mold for bending more stable and provides an anti-springback effect for the bent material, thereby reducing the springback rate of the bent material, reducing the probability of defects in the overall production, improving the overall production quality, and reducing the overall operating costs.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal forming, and more specifically, to a sheet metal forming mold that prevents springback during bending. Background Technology

[0002] Sheet metal forming is a manufacturing technology that shapes thin metal sheets (usually ≤6mm thick) into specific geometric structures through pressure processing (such as stamping, bending, stretching, spinning, etc.). Its core lies in applying external force to the sheet metal using molds or tools to induce permanent plastic deformation. At the same time, the material flowability is optimized by controlling process parameters (such as pressure, speed, and temperature) to ultimately achieve the manufacturing of high-precision, high-strength parts with good surface quality. It is widely used in the automotive, electronics, aerospace and other fields. In order to obtain a bent shape, bending sheet metal forming molds are used.

[0003] A search revealed that Chinese patent CN113275468A discloses a "sheet metal stamping forming die," comprising a base, an mounting block fixedly connected to the upper end of the base, two support rods fixedly connected to the upper end of the base, and a top plate fixedly connected to the upper ends of the two support rods; a stamping mechanism is provided at the lower end of the top plate and the upper end of the mounting block, the stamping mechanism including a hydraulic telescopic rod installed at the lower end of the top plate, a stamping block fixedly connected to the telescopic end of the hydraulic telescopic rod, and a stamping groove that mates with the stamping block at the upper end of the mounting block. This die can reduce noise generated during stamping, optimize the factory environment, and quickly cool the stamped sheet metal for easy movement to the next process. It can also lift the stamped sheet metal for easy removal later. However, it still has the following drawbacks:

[0004] (1) Most of the bending sheet metal forming molds on the market are not very stable and do not provide anti-springback effect for the bent material. This increases the springback rate of the bent material, reduces the probability of defective products during production, affects the overall production quality, and increases the overall work cost.

[0005] (2) It does not provide an effect that can adapt to bending materials of different lengths, which reduces the overall adaptability of the structure to the environment, increases the demand for different types of molds in operation, and is not conducive to the long-term use of bending sheet metal forming molds. To this end, a bending anti-springback sheet metal forming mold is proposed. Utility Model Content

[0006] The purpose of this utility model is to address the current problem of not providing anti-springback materials for bending.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a sheet metal forming mold for bending and preventing springback, comprising a support plate, a mold frame fixedly connected to the top of the support plate, an inner extension plate fixedly connected to one side of the mold frame, an electric push rod fixedly connected to the bottom of the inner extension plate, a limit pressure plate fixedly connected to the bottom end of the electric push rod, and a heating column fixedly connected inside the mold frame.

[0009] An extension plate is fixedly connected to one side of the mold frame, a hydraulic power supply device is fixedly connected to the top of the extension plate, a hydraulic rod is fixedly connected to the bottom of the hydraulic power supply device, and a bending block is fixedly connected to the bottom end of the hydraulic rod. This makes the bending sheet metal forming mold more stable and provides an anti-springback effect for the bent material, thereby reducing the springback rate of the bent material, reducing the probability of defects in the overall production, improving the overall production quality, and reducing the overall operating costs.

[0010] As a preferred technical solution of this utility model, a lower plate is fixedly connected to the bottom of the support plate, and an adjustment motor is fixedly connected to one side of the lower plate.

[0011] As a preferred technical solution of this utility model, the output shaft of the adjustment motor is fixedly connected to a rotating threaded column via a coupling, and a movable block is movably connected to the outer wall of the rotating threaded column.

[0012] As a preferred technical solution of this utility model, a limiting column is movably connected to one side of the movable block, and the length of the limiting column is equal to the length of the rotating threaded column.

[0013] As a preferred technical solution of this utility model, the top of the movable block is fixedly connected to an upper connecting block, and the top of the upper connecting block is fixedly connected to a limit frame.

[0014] As a preferred technical solution of this utility model, the bottom of the support plate is fixedly connected with an electric lifting base column, and the number of electric lifting base columns is four.

[0015] As a preferred technical solution of this utility model, the bottom end of the electric lifting column is fixedly connected to a base plate, and each base plate is provided with two electric lifting columns on its top, and the bottom area of ​​the base plate is larger than the bottom area of ​​the electric lifting column.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. By setting up support plates, mold frames, inner extension plates, electric push rods, limit pressure plates, heating columns, outer extension plates, hydraulic power supply equipment, hydraulic rods, and bending blocks, the bending sheet metal forming mold can be made more stable to use, and can provide an anti-springback effect for the bent material, thereby reducing the springback rate of the bent material, reducing the probability of defects in the overall production, improving the overall production quality, and reducing the overall operating costs.

[0018] 2. The design incorporates a lower plate, adjusting motor, rotating threaded column, movable block, limiting column, upper block, and limiting frame, which facilitates bending and forming of materials of different lengths, reduces the need for different types of molds, and promotes the long-term use of bending sheet metal forming molds. Attached Figure Description

[0019] Figure 1 A schematic diagram of the sheet metal forming mold for bending and preventing springback provided by this utility model;

[0020] Figure 2 A bottom view of the sheet metal forming mold for bending and preventing springback provided by this utility model;

[0021] Figure 3 A top view of the sheet metal forming mold for preventing springback during bending provided by this utility model;

[0022] Figure 4 A schematic diagram of the left side of the sheet metal forming mold for bending and preventing springback provided by this utility model;

[0023] Figure 5 A rear view structural diagram of the sheet metal forming mold for bending and preventing springback provided by this utility model.

[0024] The diagram shows: 1. Support plate; 2. Mold frame; 3. Inner extension plate; 4. Electric push rod; 5. Limiting pressure plate; 6. Heating column; 7. Outer extension plate; 8. Hydraulic power supply equipment; 9. Hydraulic rod; 10. Bending block; 11. Lower connecting plate; 12. Adjusting motor; 13. Rotating threaded column; 14. Movable block; 15. Limiting column; 16. Upper connecting block; 17. Limiting frame; 18. Electric lifting base column; 19. Base plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] As shown in 1-5, this embodiment proposes a sheet metal forming mold for bending and preventing springback, including a support plate 1, a mold frame 2 fixedly connected to the top of the support plate 1, an inner extension plate 3 fixedly connected to one side of the mold frame 2, an electric push rod 4 fixedly connected to the bottom of the inner extension plate 3, a limit pressure plate 5 fixedly connected to the bottom end of the electric push rod 4, and a heating column 6 fixedly connected inside the mold frame 2.

[0030] An extension plate 7 is fixedly connected to one side of the mold frame 2. A hydraulic power supply device 8 is fixedly connected to the top of the extension plate 7. A hydraulic rod 9 is fixedly connected to the bottom of the hydraulic power supply device 8. A bending block 10 is fixedly connected to the bottom end of the hydraulic rod 9. This makes the bending sheet metal forming mold more stable and provides an anti-springback effect for the bent material, thereby reducing the springback rate of the bent material, reducing the probability of defects in the overall production, improving the overall production quality, and reducing the overall operating cost.

[0031] As shown in 1-5, in a preferred embodiment, based on the above method, a lower plate 11 is fixedly connected to the bottom of the support plate 1, and an adjustment motor 12 is fixedly connected to one side of the lower plate 11, which allows the components connected to the adjustment motor 12 to rotate stably. The output shaft of the adjustment motor 12 is fixedly connected to a rotating threaded column 13 through a coupling. A movable block 14 is movably connected to the outer wall of the rotating threaded column 13, which allows the movable block 14 to move laterally. A limiting column 15 is movably connected to one side of the movable block 14, and the length of the limiting column 15 is equal to the length of the rotating threaded column 13, which allows the movable block 14 to move stably in a straight line. An upper block 16 is fixedly connected to the top of the movable block 14, and a limiting frame 17 is fixedly connected to the top of the upper block 16, which can limit the bending of the material.

[0032] The bottom of the support plate 1 is fixedly connected with an electric lifting column 18, and there are four electric lifting columns 18, which can adjust the overall working height of the structure. The bottom end of the electric lifting column 18 is fixedly connected with a base plate 19. Each base plate 19 has two electric lifting columns 18 on its top, and the bottom area of ​​the base plate 19 is larger than the bottom area of ​​the electric lifting column 18, which improves the overall stability of the structure.

[0033] Specifically, when using this anti-springback sheet metal forming mold: the electric lifting base column 18 works to adjust the height of the support plate 1, so that the support plate 1 reaches the appropriate working height. The adjusting motor 12 works to rotate the rotating threaded column 13. The rotation of the rotating threaded column 13 causes the movable block 14 to move, thereby driving the upper connecting block 16 and the limiting frame 17 to move to the appropriate position, so that the material and the limiting frame 17 are pressed together. The heating tube column 6 is exactly the bending point. At this time, the material is put in, the electric push rod 4 extends and the limiting pressure plate 5 applies pressure to the material downward, so that it will not be pried during bending. At this time, the hydraulic power supply device 8 starts to work, so that the hydraulic rod 9 extends downward, so that the bending block 10 can bend the material to the appropriate angle. At the same time, the heating tube column 6 will also be heated, which will cause the temperature of the material at the bend to rise and soften, so that the bent material will no longer spring back.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A sheet metal forming mold for preventing springback during bending, comprising a support plate (1), characterized in that, A mold frame (2) is fixedly connected to the top of the support plate (1), an inner extension plate (3) is fixedly connected to one side of the mold frame (2), an electric push rod (4) is fixedly connected to the bottom of the inner extension plate (3), a limit pressure plate (5) is fixedly connected to the bottom end of the electric push rod (4), and a heating column (6) is fixedly connected inside the mold frame (2). An extension plate (7) is fixedly connected to one side of the mold frame (2), a hydraulic power supply device (8) is fixedly connected to the top of the extension plate (7), a hydraulic rod (9) is fixedly connected to the bottom of the hydraulic power supply device (8), and a bending block (10) is fixedly connected to the bottom end of the hydraulic rod (9).

2. The sheet metal forming mold for bending and preventing springback according to claim 1, characterized in that, The bottom of the support plate (1) is fixedly connected to a lower plate (11), and a positioning motor (12) is fixedly connected to one side of the lower plate (11).

3. The sheet metal forming mold for bending and preventing springback according to claim 2, characterized in that, The output shaft of the adjustment motor (12) is fixedly connected to a rotating threaded column (13) via a coupling, and a movable block (14) is movably connected to the outer wall of the rotating threaded column (13).

4. A sheet metal forming mold for bending and preventing springback as described in claim 3, characterized in that, One side of the movable block (14) is movably connected to a limiting column (15), and the length of the limiting column (15) is equal to the length of the rotating threaded column (13).

5. A sheet metal forming mold for preventing springback during bending according to claim 3, characterized in that, The top of the movable block (14) is fixedly connected to an upper connecting block (16), and the top of the upper connecting block (16) is fixedly connected to a limit frame (17).

6. A sheet metal forming mold for preventing springback during bending according to claim 1, characterized in that, The bottom of the support plate (1) is fixedly connected to an electric lifting base column (18), and the number of electric lifting base columns (18) is four.

7. A sheet metal forming mold for preventing springback during bending according to claim 6, characterized in that, The bottom end of the electric lifting column (18) is fixedly connected to a base plate (19). Each base plate (19) has two electric lifting columns (18) on its top, and the bottom area of ​​the base plate (19) is larger than the bottom area of ​​the electric lifting column (18).

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