Negative angle forming structure of metal part

Abstract

The utility model relates to stamping processing technical field, concretely relates to a metal piece negative angle forming structure, including pressure material forming subassembly, negative angle forming subassembly, forming drive subassembly, negative angle forming subassembly includes negative angle forming seat, swing seat of rotation connection in negative angle forming seat bottom, the negative angle forming piece of setting in swing seat one side, forming drive subassembly drives swing seat swing towards pressure material assembly one side, swing seat and negative angle forming seat between be connected with elastic reset piece, the utility model discloses swing seat under the cooperation of drive subassembly, when closing mould can swing towards pressure material forming subassembly, make the negative angle forming piece from side stamping metal piece, realize the forming of negative angle structure, once closing mould stamping can realize the forming of metal piece with negative angle, swing seat can be far away from pressure material forming subassembly and let out space when opening mould, avoid the interference to the discharge, convenient operation, high efficiency, reduced production cost.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology, specifically to a negative angle forming structure for metal parts. Background Technology

[0002] Hardware, also known as metal parts, refers to workpieces or products made from metal through processing, and is widely used in various fields. In industrial manufacturing products, such as electronic products, home appliances, and transportation vehicles, hardware is frequently used to achieve purposes such as connection, structural reinforcement, and decoration. In the processing of automotive parts, some metal components involve curved surfaces and bending structures; these types of metal parts are typically formed through stamping, for example... Figure 4 The metal part shown has curved surfaces, bends, and different hole positions. The bend is also a negative angle bend. However, due to the presence of the negative angle, an "undercut" occurs between the metal part and the demolding direction after forming, making it impossible to remove the workpiece from the mold in a straight direction. Therefore, metal parts with negative angle bends usually need to be bent to 90 degrees by stamping, and then bend to the required negative angle by secondary processing. This operation requires two processing steps, which is cumbersome, inefficient, and costly. Utility Model Content

[0003] To solve the above problems, this utility model provides a negative angle forming structure for metal parts.

[0004] This utility model is achieved using the following solution: A negative angle forming structure for metal parts includes a pressing forming assembly, a negative angle forming assembly, and a forming drive assembly. The negative angle forming assembly is located between the pressing forming assembly and the forming drive assembly. The negative angle forming assembly includes a negative angle forming base, a swing base rotatably connected to the bottom of the negative angle forming base, and a negative angle forming part disposed on the side of the swing base facing the pressing forming assembly. The forming drive assembly drives the swing base to swing towards the pressing forming assembly. An elastic reset member is connected between the swing base and the negative angle forming base.

[0005] Furthermore, the upper end of the swing seat is rotatably connected to the negative angle forming seat, and a boss is provided on the side of the swing seat near the negative angle forming seat, and the lower end of the elastic reset member is connected to the boss.

[0006] Furthermore, the boss is arranged along the length direction of the swing seat, and multiple elastic reset members are provided, and the multiple elastic reset members are evenly arranged along the length direction of the swing seat.

[0007] Furthermore, the elastic reset element is a helical spring.

[0008] Furthermore, the swing seat has a mounting surface on the side facing the pressing and forming assembly, and the negative angle forming part is fixed to the mounting surface.

[0009] Furthermore, the pressing and forming assembly includes a fixed base, a lower pressing base disposed on the fixed base, and an upper pressing base that cooperates with the lower pressing base.

[0010] Furthermore, the molding drive assembly includes a drive base and a drive block disposed on the drive base. The drive block is inclined relative to the bottom surface of the drive base, and the swing seat has an inclined surface that cooperates with the drive block on the side facing the molding drive assembly.

[0011] Furthermore, the bottom surface of the negative angle forming seat is provided with an arc-shaped groove, and the top of the swing seat is provided with an arc-shaped part that mates with the arc-shaped groove.

[0012] Furthermore, the negative angle forming assembly also includes a first rotating seat and a second rotating seat respectively disposed at both ends of the negative angle forming base, and the swing seat is provided with a connecting shaft, the two ends of the connecting shaft being connected to the first rotating seat and the second rotating seat respectively.

[0013] Compared with the prior art, the present invention has the following advantages: This invention features a negative angle forming component. With the cooperation of the drive component, the swing seat can swing towards the pressing forming component when the mold is closed, so that the negative angle forming part can be punched from the side to form the metal part, thus achieving the forming of the negative angle structure. The forming of the metal part with the negative angle can be achieved in one mold closing and punching. At the same time, when the mold is opened, the swing seat can move away from the pressing forming component to make room and avoid interference with the material discharge. The operation is convenient, efficient, and reduces production costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a negative angle forming structure for a metal part provided in an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram from another angle of an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the negative angle forming component in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of a metal part manufactured according to this utility model.

[0018] The image includes: The components include: a pressing and forming assembly 1, a fixed base 11, a lower pressing base 12, an upper pressing base 13, a negative angle forming assembly 2, a negative angle forming base 21, an arc groove 211, a swing base 22, a boss 221, a mounting surface 222, an arc-shaped part 223, an inclined surface 224, a negative angle forming part 23, an elastic reset part 24, a first rotating base 25, a second rotating base 26, a connecting shaft 27, a forming drive assembly 3, a drive base 31, a drive block 32, and a product 4. Detailed Implementation

[0019] To facilitate understanding of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Reference Figures 1 to 4 This embodiment provides a negative angle forming structure for metal parts, including a pressing forming component 1, a negative angle forming component 2, and a forming drive component 3. The negative angle forming component 2 is located between the pressing forming component 1 and the forming drive component 3 (in the mold-closed state). In specific implementation, the negative angle forming structure of this utility model is set in a forming mold, and the pressing forming component 1, the negative angle forming component 2, and the forming drive component 3 need to be connected to the mold base, template, and other structures of the forming mold. In this embodiment, the negative angle forming component 2 is used for... Figure 4 The negative angle section of the right front bend in product 4 is formed (the negative angle is small and not obvious in the attached diagram). During the mold closing process, the negative angle forming component 2 moves downward, and the forming drive component 3 contacts the negative angle forming component 2, pushing the negative angle forming component 2 towards the pressure forming component 1. The negative angle forming component 2 and the pressure forming component 1 cooperate to form the negative angle section of the metal part. When the mold opens, the negative angle forming component 2 will move away from the pressure forming component 1 and will not interfere with the demolding of the metal part.

[0021] The negative angle forming assembly 2 includes a negative angle forming base 21, a swing base 22 rotatably connected to the bottom of the negative angle forming base 21, and a negative angle forming component 23 disposed on the side of the swing base 22 facing the pressing forming assembly 1. The forming drive assembly 3 drives the swing base 22 to swing towards the pressing forming assembly. Specifically, the forming drive assembly 3 can drive the swing base 22 to swing around its rotational connection point with the negative angle forming base 21 towards the pressing forming assembly 1, thereby driving the negative angle forming component 23 to perform side stamping on the metal part, realizing the forming of the negative angle.

[0022] An elastic reset member 24 is connected between the swing seat 22 and the negative angle forming seat 21. The elastic reset member 24 is used to pull the swing seat 22 back to its initial position during the mold opening process after stamping, thereby moving the negative angle forming part 23 away from the metal part and creating clearance space for easy demolding. Specifically, when the swing seat 22 swings towards the pressing forming assembly 1 under the action of the forming drive assembly, the elastic reset member 24 is compressed, storing elastic potential energy. When the mold opens after stamping, and the swing seat 22 moves upward (i.e., the swing seat 22 moves away from the forming drive assembly), the elastic reset member 24 releases its potential energy, pulling the swing seat 22 back to its initial position. In this embodiment, the elastic reset member 24 is a helical spring; however, other types of elastic reset members 24 may be used depending on the specific mold design.

[0023] The upper end of the swing seat 22 is rotatably connected to the negative angle forming seat 21. A boss 221 is provided on the side of the swing seat 22 near the negative angle forming seat 21. The lower end of the elastic reset member 24 is fixedly connected to the boss 221, and the upper end passes through the negative angle forming seat 21 and connects to the mold base of the mold, forming a stable reset transmission structure. Alternatively, the upper end of the elastic reset member 24 can also be fixedly connected to the negative angle forming seat 21.

[0024] The bottom surface of the negative angle forming seat 21 is provided with an arc-shaped groove 211, and the top of the swing seat 22 is provided with an arc-shaped part 223 that mates with the arc-shaped groove 211. During the rotation of the swing seat 22, the arc-shaped part 223 slides along the inner wall of the arc-shaped groove 211, forming a constraint trajectory, thereby limiting the swing path of the swing seat 22, ensuring the motion accuracy of the swing seat 22 during the swing process, ensuring that the movement direction of the negative angle forming part 23 is always consistent with the preset negative angle, and ultimately avoiding punching angle errors caused by swing offset.

[0025] The boss 221 is arranged along the length of the swing seat 22. Multiple elastic reset members 24 are provided, and the multiple elastic reset members 24 are evenly arranged along the length of the swing seat 22. This not only ensures a fast reset response speed, but also ensures that the swing seat 22 is subjected to balanced force during reset, achieving stable reset, avoiding reset tilting or incomplete reset, reducing the risk of mold collision, and extending the service life of the mold.

[0026] The swing seat 22 has a mounting surface 222 on the side facing the pressing and forming assembly 1, and the negative angle forming part 23 is fixed to the mounting surface 222. In this embodiment, the mounting surface 222 is a planar structure and is adapted to the connection surface of the negative angle forming part 23. The negative angle forming part 23 is fixed to the mounting surface 222 by bolts or screws, which can be quickly replaced according to the negative angle and hole diameter requirements of different metal parts without replacing the entire mold, reducing equipment investment costs, and improving the equipment's adaptability to different products 4.

[0027] The pressing and forming assembly 1 includes a fixed base 11, a lower pressing base 12 disposed on the fixed base 11, and an upper pressing base 13 cooperating with the lower pressing base 12. The bottom surface of the upper pressing base 13 is provided with a first forming area for forming metal parts, and the top surface of the lower pressing base 12 is provided with a second forming area matching the first forming area. The upper pressing base 13 can move towards or away from the lower pressing base 12. When a metal part is placed on the lower pressing base 12, the upper pressing base 13 moves towards the lower pressing base 12, and the two work together to press and form the metal support from above and below. Simultaneously, the upper pressing base 13 and the lower pressing base 12 can restrict the horizontal movement of the metal part during forming, facilitating the stamping and forming of negative angle structures by the negative angle forming assembly 2.

[0028] The forming drive assembly includes a drive base 31 and a drive block 32 disposed on the drive base 31. The drive block 32 is inclined relative to the bottom surface of the drive base 31. The swing seat 22 has an inclined surface 224 on the side facing the forming drive assembly that cooperates with the drive block 32. When the stamping die is closed, the drive block 32 can fit against the inclined surface 224 of the swing seat 22 and push the swing seat 22 to swing around the rotation connection point, that is, push the swing seat 22 to press against the blank forming assembly 1 from the side, thereby realizing the negative angle forming of the metal part.

[0029] The negative angle forming assembly 2 further includes a first rotating seat 25 and a second rotating seat 26 respectively disposed at both ends of the negative angle forming base 21. The swing seat 22 is provided with a connecting shaft 27, the two ends of which are connected to the first rotating seat 25 and the second rotating seat 26 respectively. In specific implementation, the first rotating seat 25 and the second rotating seat 26 may be provided with corresponding shaft holes, and bearings may be provided in the shaft holes to reduce the coefficient of rotational friction. During the mold closing process, the negative angle forming assembly 2 moves downward, the inclined surface 224 of the swing seat 22 contacts the driving block 32, and the swing seat 22 is pushed by the driving block 32 to swing, that is, the swing seat 22 rotates about the connecting shaft 27 as the rotation axis.

[0030] During stamping, the metal material to be processed is placed between the upper pressure plate 13 and the lower pressure plate 12. When the stamping mold closes, the upper pressure plate 13 moves downwards towards the lower pressure plate 12. The upper pressure plate 13 and the lower pressure plate 12 cooperate to press the metal part into shape. At the same time, the negative angle forming component 2 moves downwards towards the forming drive component until the inclined surface 224 of the swing seat 22 contacts the drive block 32. As the negative angle forming component 2 continues to move downwards, the swing seat 22 is pushed by the drive block 32 to swing towards the pressure plate forming component 1. The negative angle forming component 23 stamps the metal part from the side, bending the edge of the metal part to form a negative angle structure. When the mold opens, the upper pressure plate 13 moves away from the lower pressure plate 12, and at the same time, the swing seat 22 of the negative angle forming component 2 moves upwards away from the forming drive component. At this time, the swing seat 22 swings back under the action of the elastic reset component 24, moving away from the pressure plate forming component 1 to form a clearance space. At this time, the product 4 can be quickly ejected without causing interference.

[0031] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to 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. For example, "upper," "lower," "left," "right," etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the scope of the appended claims.

Claims

1. A negative angle forming structure for a metal part, characterized in that, The device includes a pressing and forming assembly, a negative angle forming assembly, and a forming drive assembly. The negative angle forming assembly is located between the pressing and forming assembly and the forming drive assembly. The negative angle forming assembly includes a negative angle forming base, a swing base rotatably connected to the bottom of the negative angle forming base, and a negative angle forming part disposed on the side of the swing base facing the pressing and forming assembly. The forming drive assembly drives the swing base to swing towards the pressing and forming assembly. An elastic reset member is connected between the swing base and the negative angle forming base.

2. The metal part negative angle forming structure according to claim 1, characterized in that, The upper end of the swing seat is rotatably connected to the negative angle forming seat, and a boss is provided on the side of the swing seat near the negative angle forming seat. The lower end of the elastic reset member is connected to the boss.

3. The metal part negative angle forming structure according to claim 2, characterized in that, The boss is arranged along the length direction of the swing seat, and multiple elastic reset members are provided, and the multiple elastic reset members are evenly arranged along the length direction of the swing seat.

4. The metal part negative angle forming structure according to claim 1, characterized in that, The elastic reset element is a helical spring.

5. The metal part negative angle forming structure according to claim 1, characterized in that, The swing seat has a mounting surface on the side facing the pressing and forming assembly, and the negative angle forming part is fixed to the mounting surface.

6. The negative-angle forming structure of a metal piece according to claim 1, wherein The pressing and forming assembly includes a fixed base, a lower pressing base disposed on the fixed base, and an upper pressing base that cooperates with the lower pressing base.

7. The metal part negative angle forming structure according to claim 1, characterized in that, The molding drive assembly includes a drive base and a drive block disposed on the drive base. The drive block is inclined relative to the bottom surface of the drive base, and the swing seat has an inclined surface on the side facing the molding drive assembly that cooperates with the drive block.

8. The metal part negative angle forming structure according to claim 1, characterized in that, The bottom surface of the negative angle forming seat is provided with an arc-shaped groove, and the top of the swing seat is provided with an arc-shaped part that mates with the arc-shaped groove.

9. The metal part negative angle forming structure according to claim 1, characterized in that, The negative angle forming assembly also includes a first rotating seat and a second rotating seat respectively disposed at both ends of the negative angle forming base. The swing seat is provided with a connecting shaft, and the two ends of the connecting shaft are respectively connected to the first rotating seat and the second rotating seat.

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