Bending forming device for omega-shaped part or part with negative angle

Abstract

The utility model discloses a bending forming device for an omega-shaped part or a part with a negative angle. The die comprises an upper die assembly and a lower die assembly, the upper die assembly comprises a male die bottom plate, a male die fixed to the lower portion of the male die bottom plate through a male die fixing plate and two wedge blocks fixed to the lower portion of the male die fixing plate, the two wedge blocks are symmetrically arranged on the two sides of the male die, and the inner sides of the wedge blocks are provided with slopes; the female die fixing plate is fixed on the female die base, the female die comprises two bending die blocks which are oppositely arranged, the two bending die blocks are movably arranged on the female die fixing plate, and the opposite sides of the two bending die blocks are respectively provided with a forming part matched with a bending line. Inclined planes which can be matched with the inclined planes on the inner sides of the wedge blocks are respectively arranged on the outer sides of the two bending modules; and bending module resetting mechanisms are arranged on the female die fixing plate corresponding to the outer side ends of the bending modules. According to the utility model, the omega-shaped part or the part with the negative angle can be bent and formed at one time.

Description

Technical Field

[0001] This utility model relates to a bending and forming device, which is mainly used for bending and forming Ω-shaped or negative angle parts. Background Technology

[0002] In existing technologies, when stamping Ω-shaped or negative angle workpieces, the process is generally divided into multiple steps, requiring pre-forming, shaping, secondary stamping, and shaping. The process requires multiple positioning, which can easily lead to inaccurate positioning, making it difficult to ensure the consistency of the workpiece and affecting product quality. Moreover, the multi-step processing reduces production efficiency. In addition, multi-step or multi-press operation wastes labor costs, electricity costs, equipment costs, and turnover expenses. Utility Model Content

[0003] To address the aforementioned deficiencies in the existing technology, this utility model provides a bending forming device with a simple structure that can bend Ω-shaped or negative angle parts in one step.

[0004] This utility model is achieved through the following technical solution: an Ω-shaped or negative angle bending forming device, characterized in that: it includes an upper die assembly and a lower die assembly. The upper die assembly includes a punch base plate, a punch fixed to the lower part of the punch base plate by a punch fixing plate, and two wedge blocks fixed to the lower part of the punch fixing plate. The two wedge blocks are symmetrically arranged on both sides of the punch, and the inner side of the wedge blocks has an inclined surface. The lower die assembly includes a die base, a die fixing plate, and a die. The die fixing plate is fixed on the die base. The die includes two opposing bending modules. Both bending modules are movably arranged on the die fixing plate. The opposing side of the two bending modules is respectively provided with a forming part that corresponds to the bending line. The outer side of the two bending modules is respectively provided with an inclined surface that can cooperate with the inner inclined surface of the wedge block. A bending module reset mechanism is provided on the die fixing plate corresponding to the outer end of the bending module.

[0005] The working principle of this utility model is as follows: This utility model is a bending forming process. Through the forming part of the bending module, in conjunction with the closing action of the upper and lower dies, a bending force is formed on the processed material to achieve the desired shape. At the beginning of the bending stage, the metal sheet first undergoes elastic deformation. At this time, the sheet bends under the action of external force, but when the external force is removed, the sheet tends to return to its original shape. As the punch continues to descend and apply pressure, the sheet enters the plastic deformation stage. At this time, the internal crystal structure of the sheet slips and rearranges, and the sheet undergoes irreversible deformation, thus gradually forming the desired bending shape. When this utility model is working, the workpiece is placed on the concave die. The upper die assembly falls downward under the action of the equipment. Two wedge blocks press the outer inclined surfaces of the two bending modules in the lower die assembly through their inner inclined surfaces, causing the two bending modules to converge in the middle and squeeze the workpiece. The upper and lower dies close, and the workpiece is squeezed and formed. After the external force is removed from the upper die assembly, the upper die assembly moves upward. Under the action of the bending module reset mechanism, the two bending modules move outward and reset. At this time, the workpiece can be pushed out and unloaded from one side.

[0006] Furthermore, to ensure the reliability and safety of the bending module's movement, an inner guide groove is provided at the bottom of the bending module along the movement direction, and a limiting and fixing pin is provided on the die fixing plate to cooperate with the inner guide groove at the bottom of the bending module.

[0007] Furthermore, the bending module reset mechanism includes a spring positioning plate, a spring pin, and a compression spring fixed on the die fixing plate. The spring pin is movably inserted through the spring positioning plate and connected to the bending module. The compression spring is connected between the outer end of the spring pin and the spring positioning plate.

[0008] The beneficial effects of this utility model are: the utility model has a simple structure, can bend and form Ω-shaped or negative angle parts in one go, the workpiece forming is simple, the workpiece does not need to be positioned multiple times during the processing, the workpiece forming quality is reliable, the processing efficiency is high, and it can greatly improve production efficiency and reduce production costs. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of the present invention (the upper mold assembly and the lower mold assembly are in a separated state);

[0010] Figure 2 This is a schematic diagram of the upper mold assembly and the lower mold assembly when closed in this utility model;

[0011] In the figure, 1. Upper die shank, 2. Punch base plate, 3. Punch fixing plate, 4. Fastening bolt, 5. Wedge block, 5.1, Inclined surface, 6. Punch, 7. Formed part, 8. Die base, 9. Die fixing plate, 10. Limiting pin, 11. Bending module, 11.1, Inner guide groove, 11.2, Inclined surface, 12. Spring positioning plate, 13. Spring pin, 14. Compression spring. Detailed Implementation

[0012] The present invention will be further described below through non-limiting embodiments and in conjunction with the accompanying drawings:

[0013] As shown in the attached figure, an Ω-shaped or negative angle bending forming device includes an upper die assembly and a lower die assembly. The upper die assembly includes a punch base plate 2, a punch fixing plate 3, a punch 6, and two wedge blocks 5. The punch 6 is mounted on the punch fixing plate 3, which is fixed to the lower part of the punch base plate by fastening bolts 4. The two wedge blocks 5 are fixed to the lower part of the punch fixing plate 3 and are symmetrically arranged on both sides of the punch 6. The inner side of the wedge blocks 5 has an inclined surface 5.1. The lower die assembly includes a die base 8, a die fixing plate 9, and a die. The die fixing plate 9 is fixed on the die base 8. The die includes two opposing bending modules 11, both of which are movably mounted on the die fixing plate 9. Each of the two bending modules 11 has a forming part corresponding to the bending line on its opposite side. When the two bending modules 11 are closed, their forming parts form the die. The outer sides of the two bending modules 11 are respectively provided with inclined surfaces 11.2 that can cooperate with the inner inclined surfaces of the wedge block 5. A bending module reset mechanism is provided on the outer ends of the two bending modules 11 on the die fixing plate 9. The bending module reset mechanism is connected to the bending module 11. In this embodiment, the bending module reset mechanism includes a spring positioning plate 12, a spring pin 13, and a compression spring 14 fixed on the die fixing plate 9. The spring pin 13 is movably inserted through the spring positioning plate 12 and connected to the bending module 11. The compression spring 14 is connected between the outer end of the spring pin 13 and the spring positioning plate 12.

[0014] To ensure the reliability and safety of the bending module movement, preferably, the bottom of the bending module 11 is provided with an inner guide groove 11.1 arranged along the movement direction, and the die fixing plate 9 is provided with a limiting fixing pin 10 that cooperates with the inner guide groove 11.1 at the bottom of the bending module.

[0015] In operation, the workpiece is placed on the concave die, and the upper die assembly falls downward under the action of the equipment. Two wedge blocks 5, through their inner inclined surfaces 5.1, press against the outer inclined surfaces 11.2 of the two bending modules 11 in the lower die assembly, causing the two bending modules 11 to converge towards the center, squeezing the workpiece. The upper and lower dies close, and the workpiece is formed. When the bending modules 11 converge towards the center, the compression spring 14 is compressed. This invention is a bending forming process. Its working principle is: through the forming part of the bending module, in conjunction with the closing action of the upper and lower dies, a bending force is formed on the processed material, thereby achieving the desired shape. At the beginning of the bending stage, the metal sheet first undergoes elastic deformation. At this time, the sheet bends under the action of external force, but when the external force is removed, the sheet tends to return to its original shape. As the punch continues to descend and apply pressure, the sheet enters the plastic deformation stage. At this time, the internal crystal structure of the sheet slips and rearranges, causing irreversible deformation, thus gradually forming the desired bending shape. After the workpiece is formed, the upper mold assembly is freed from external force and moves upward. The two bending modules 11 move outward and reset under the action of the compression spring 14. At this time, the workpiece can be pushed out and unloaded from one side.

[0016] This invention has a simple structure and can be bent into Ω-shaped or negative angle parts in one step, making workpiece forming simple and processing efficiency high.

[0017] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. An Ω-shaped or negative angle bending forming device, characterized in that: The assembly includes an upper die assembly and a lower die assembly. The upper die assembly includes a punch base plate, a punch fixed to the lower part of the punch base plate by a punch fixing plate, and two wedge blocks fixed to the lower part of the punch fixing plate. The two wedge blocks are symmetrically arranged on both sides of the punch, and the inner side of the wedge blocks has an inclined surface. The lower die assembly includes a die base, a die fixing plate, and a die. The die fixing plate is fixed on the die base. The die includes two opposing bending modules. Both bending modules are movably arranged on the die fixing plate. The opposing side of the two bending modules is respectively provided with a forming part that corresponds to the bending line. The outer side of the two bending modules is respectively provided with an inclined surface that can cooperate with the inner inclined surface of the wedge block. The die fixing plate is provided with a bending module reset mechanism corresponding to the outer end of the bending module.

2. The Ω-shaped or negative angle bending forming device according to claim 1, characterized in that: The bottom of the bending module is provided with an inner guide groove that is positioned along the moving direction, and the die fixing plate is provided with a limiting fixing pin that cooperates with the inner guide groove at the bottom of the bending module.

3. The Ω-shaped or negative angle bending forming device according to claim 1 or 2, characterized in that: The bending module reset mechanism includes a spring positioning plate, a spring pin, and a compression spring fixed on the die fixing plate. The spring pin is movably inserted through the spring positioning plate and connected to the bending module. The compression spring is connected between the outer end of the spring pin and the spring positioning plate.

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