Universal bending die

Abstract

The utility model relates to the field of bending die, especially a general type bending die, including work table and setting in work table top's support frame, work table middle part rotationally connected with lower mould, the support frame top is equipped with the pneumatic cylinder, the output shaft bottom fixedly connected with fixed part of pneumatic cylinder, the fixed part bottom is connected with upper mould, the lower mould is provided with the locating rod, the lower mould with the position of upper mould corresponds, and a plurality of mould shapes are equipped on different circumferential direction of lower mould.

Description

Technical Field

[0001] This utility model relates to the field of bending dies, and in particular to a general-purpose bending die. Background Technology

[0002] Bending dies, as a key "tool assembly" on a bending machine, are responsible for pressing metal sheets into predetermined angles and shapes. Traditional dies typically consist of a lower die, an upper die, and a drive unit that moves the upper die. The fixed shapes of the upper and lower dies limit each die to bending only a single shape. However, market demands for diverse bending forms of metal sheets make it difficult for fixed-shape dies to meet the requirements of flexible production. To improve adaptability, existing technologies often employ detachable die structures, allowing for multi-shape processing by changing different dies. However, frequent disassembly and assembly significantly increases operation time and impacts production efficiency.

[0003] To address the aforementioned issues, a Chinese utility model patent (application number: 202220160129.9) proposes a high-precision, universal aluminum sheet bending device. This device includes a base and a support frame. The support frame is fixed to one side of the base, which has multiple sets of mounting slots, each containing a detachable module. A bending die mounting frame is mounted on the support frame via hydraulic rods, on which a detachable bending die is mounted, corresponding to and engaging with the modules on the base. Multiple sets of parallel rolling shafts are also provided at both ends of the base modules to assist in the positioning and movement of the sheet metal. This solution, by arranging multiple modules of different shapes, avoids the efficiency loss caused by frequent die changes and enhances the versatility of the dies. However, this parallel arrangement of multiple modules also significantly increases the overall space occupied by the dies, resulting in low space utilization of the equipment. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides a universal bending die that is highly adaptable, has high production efficiency, and high space utilization.

[0005] The solution adopted by this utility model to solve its technical problem is: a general-purpose bending die, including a workbench and a support frame set on the top of the workbench. A lower die is rotatably connected to the middle of the workbench. A cylinder is provided on the top of the support frame. A fixing member is fixedly connected to the bottom of the output shaft of the cylinder. An upper die is connected to the bottom of the fixing member. A positioning rod is provided on the lower die. The lower die and the upper die are positioned correspondingly. Multiple molds are provided on different circumferential positions of the lower die.

[0006] Furthermore, the model includes at least a triangular model, a trapezoidal model, and a U-shaped model.

[0007] Furthermore, the triangular model includes isosceles triangular models and isosceles triangular models.

[0008] Furthermore, the bottom of the lower mold is provided with an elastic pad.

[0009] Furthermore, the bottom of the fixing component is provided with a fixing groove, and the upper mold is detachably disposed at the bottom of the fixing groove.

[0010] Furthermore, the fixing component has a rotating shaft in the middle, the upper mold is fixedly connected to the rotating shaft, the upper mold is provided with a positioning rod and has multiple molds in different circumferential orientations.

[0011] In summary, the beneficial effects of this utility model are as follows:

[0012] The lower mold of this application integrates various shapes and sizes of mold openings, such as triangular, trapezoidal, and U-shaped molds, in different circumferential orientations, effectively reducing the overall space occupied by the equipment and improving space utilization. At the same time, this integrated design enables the mold to have diverse bending capabilities, greatly expanding the processing range and providing good adaptability.

[0013] Furthermore, when processing workpieces of different shapes or angles, operators do not need to disassemble the entire lower mold. They only need to rotate the integrated lower mold to position the corresponding die opening, which then cooperates with the upper mold to complete the bending. This conversion process is simple and quick, effectively shortening mold change time and reducing equipment downtime, thereby improving effective working time and overall production efficiency.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is the front view of Embodiment 1;

[0016] Figure 2 This is the front view of Embodiment 2;

[0017] Figure 3 This is a schematic diagram of the structure of Example 2;

[0018] Figure 4 This is an exploded view of Example 2.

[0019] In the diagram: 1. Workbench; 2. Support frame; 3. Lower mold; 4. Cylinder; 5. Fixing component; 51. Fixing groove; 52. Rotating shaft; 6. Upper mold; 7. Positioning rod; 8. Elastic pad. Detailed Implementation

[0020] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0021] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise stated, "a plurality of" means two or more.

[0022] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, a general-purpose bending die includes a workbench 1 and a support frame 2 set on the top of the workbench 1. A lower die 3 is rotatably connected to the middle of the workbench 1 via a rotating shaft 52. A cylinder 4 is provided on the top of the support frame 2. The output shaft of the cylinder 4 extends vertically downward and is fixedly connected to a fixing member 5. An upper die 6 is connected to the bottom of the fixing member 5. The lower die 3 is provided with a positioning hole and a positioning rod 7.

[0024] The lower mold 3 and the upper mold 6 are positioned correspondingly to form a bending station.

[0025] In this embodiment, the outer circumferential surface of the lower mold 3 is provided with multiple mold structures of different shapes to achieve various bending forms. The mold structures include trapezoidal molds, U-shaped molds, isosceles triangular molds, and isosceles triangular molds.

[0026] Through the above design, the bending die of this application can adapt to bending requirements of different angles and asymmetrical shapes, and by rotating the lower die 3, the required die shape can be quickly switched to the working position, thereby improving the applicability and production efficiency of the die.

[0027] like Figure 3 As shown, the workbench 1 in this embodiment is provided with a groove for installing the lower mold 3, and an elastic pad 8 is provided inside the groove.

[0028] Example 1

[0029] like Figure 1As shown, the bottom of the fixing part 5 is provided with a fixing groove 51, and the upper mold 6 is detachably set inside the fixing groove 51 by screw connection.

[0030] With the above design, operators only need to disassemble and assemble the upper mold 6, without disassembling and assembling the entire lower mold 3. They only need to rotate the integrated lower mold 3 to rotate the corresponding mold opening to the processing position, which can cooperate with the upper mold 6 to complete the bending. This effectively shortens the mold change time, reduces equipment standby time, and thus improves the effective working time and overall production efficiency.

[0031] The method of using the bending die in this embodiment is as follows:

[0032] ① Determine the specific mold shape of the lower die 3 to be used based on the bending shape requirements of the metal sheet, such as V-shape, U-shape, etc.

[0033] ② Manually rotate the lower mold 3 to align the selected mold shape with the center line of the upper mold 6 above. At this time, the positioning hole on the lower mold 3 corresponds to the through hole on the worktable 1. Insert the positioning rod 7 into the positioning hole and the through hole to achieve the positioning of the lower mold 3.

[0034] ③ If the shape of the metal sheet to be bent needs to be changed and the upper mold 6 needs to be replaced, use a tool to loosen the bolts on the fixing part 5, remove the current upper mold 6, replace it with an upper mold 6 that matches the selected lower mold shape, and then use bolts to fasten it in the fixing groove 51.

[0035] ④ Place the sheet material to be bent flat on the mold groove of the lower mold 3, operate the control switch to start the cylinder 4, and the output shaft of the cylinder 4 drives the fixing part 5 and the upper mold 6 to move downward.

[0036] ⑤ After the upper mold 6 contacts the metal sheet, it continues to apply downward pressure to press the metal sheet into the mold groove of the lower mold 3. At the same time, the elastic pad 8 at the bottom of the lower mold 3 plays a buffering role in this process and distributes the pressure evenly. When the upper mold 6 reaches the preset lower stop point, it holds the pressure for a moment to allow the workpiece to fully plastically deform.

[0037] ⑥ Operate the control switch to retract the output shaft of cylinder 4, causing the upper mold 6 to move away from the workpiece. At this time, the operator can manually remove the metal sheet.

[0038] Example 2

[0039] like Figure 2 , Figure 3 and Figure 4 As shown, the fixing part 5 has a rotating shaft 52 in the middle, the upper mold 6 is fixedly connected to the rotating shaft 52, the upper mold 6 is provided with a positioning rod 7 and has multiple molds in different circumferential orientations.

[0040] The method of using the bending die in this embodiment is as follows:

[0041] ① Determine the lower die 3 and its specific shape based on the bending shape requirements of the metal sheet, such as V-shape or U-shape;

[0042] ② Manually rotate the lower mold 3 and the upper mold 6 so that the selected mold shape of the lower mold 3 is aligned with the center line of the upper mold 6. At this time, the positioning hole on the lower mold 3 corresponds to the through hole on the worktable 1. Insert the positioning rod 7 into the positioning hole and the through hole to achieve the positioning of the lower mold 3.

[0043] ③ Make the positioning hole of the upper mold 6 correspond to the through hole on the fixing part 5, and insert the positioning rod 7 into the positioning hole and the through hole of the upper mold 6 to achieve the positioning of the upper mold 6.

[0044] ④ Place the sheet material to be bent flat on the mold groove of the lower mold 3, operate the control switch to start the cylinder 4, and the output shaft of the cylinder 4 drives the fixing part 5 and the upper mold 6 to move downward.

[0045] ⑤ After the upper mold 6 contacts the metal sheet, it continues to apply downward pressure to press the metal sheet into the mold groove of the lower mold 3. At the same time, the elastic pad 8 at the bottom of the lower mold 3 plays a buffering role in this process and distributes the pressure evenly. When the upper mold 6 reaches the preset lower stop point, it holds the pressure for a moment to allow the workpiece to fully plastically deform.

[0046] ⑥ Operate the control switch to retract the output shaft of cylinder 4, causing the upper mold 6 to move away from the workpiece. At this time, the operator can manually remove the metal sheet.

[0047] With the above design, operators do not need to disassemble the entire upper mold 6 and lower mold 3. They only need to rotate the integrated lower mold 3 and upper mold 6 to rotate the corresponding mold opening to the processing position to complete the bending, which further shortens the mold change time and improves the overall production efficiency.

[0048] It should be noted that, in order to achieve accurate alignment of the upper mold 6 and the lower mold 3 and to ensure operational stability, the perforation on the worktable 1 in this embodiment is the same size as the positioning hole on the lower mold 3. Similarly, in embodiment two, the positioning hole of the upper mold 6 is the same size as the perforation on the fixing member 5.

[0049] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A general-purpose bending die, comprising a worktable (1) and a support frame (2) disposed on the top of the worktable (1), characterized in that, The workbench (1) is rotatably connected to a lower mold (3) in the middle. The support frame (2) is equipped with a cylinder (4) at the top. The output shaft of the cylinder (4) is fixedly connected to a fixing part (5) at the bottom. The fixing part (5) is connected to an upper mold (6) at the bottom. The lower mold (3) is equipped with a positioning rod (7). The lower mold (3) is positioned corresponding to the upper mold (6), and multiple molds are provided on different circumferential orientations of the lower mold (3).

2. The universal bending die according to claim 1, characterized in that, The model includes at least a triangular model, a trapezoidal model, and a U-shaped model.

3. A general-purpose bending die according to claim 2, characterized in that, The triangular model includes isosceles triangular models and isosceles triangular models.

4. A general-purpose bending die according to claim 1, characterized in that, The bottom of the lower mold (3) is provided with an elastic pad (8).

5. A general-purpose bending die according to claim 1, characterized in that, The fixing member (5) has a fixing groove (51) at the bottom, and the upper mold (6) is detachably set at the bottom of the fixing groove (51).

6. A general-purpose bending die according to claim 1, characterized in that, The fixing member (5) has a rotating shaft (52) in the middle, the upper mold (6) is fixedly connected to the rotating shaft (52), the upper mold (6) is provided with a positioning rod (7) and has multiple molds in different circumferential directions.

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