Automobile tail door outer plate stamping die with negative-angle flanging

Abstract

The utility model relates to an automobile tail door outer plate stamping die with a negative angle flanging, and belongs to the technical field of stamping dies. Comprising an upper die base and a lower die base, lower inclined wedges capable of horizontally moving are arranged on the two sides of the top of the lower die base, fixedly-connected lower inserts are arranged on the tops of the lower inclined wedges, fixedly-connected standard inclined wedges are arranged on the two sides of the lower die base, negative angle forming faces are arranged on the abutting portions of the standard inclined wedges and the lower inserts, and an upper forming face is arranged between the bottom face of an upper pressing plate and the top faces of the lower inclined wedges. Tail door outer plates used for stamping are arranged on the negative angle forming face and the upper forming face, a horizontally-arranged nitrogen spring is arranged on the side, close to the outer portion of the die, of the lower inclined wedge, and the other end of the nitrogen spring abuts against the lower die base. According to the scheme, in the one-time stamping process, the upper surface of the metal plate and the structure of the negative-angle flanging can be machined at the same time, the manufacturing procedure is simplified, the production efficiency is improved, the lower insert used for machining the negative-angle flanging can be reset and retracted, and part taking is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies and relates to a stamping die for an automobile tailgate outer panel with a negative angle flange. Background Art

[0002] Stamping dies are mainly used for processing metal products and are widely used in the manufacturing of automobiles, home appliances, electronic equipment and other fields. They can process metal raw materials into parts with specific structures for subsequent production and manufacturing. The use of stamping dies to produce parts has the advantages of high precision and high efficiency, and is therefore widely used in the field of industrial manufacturing.

[0003] However, the stamping dies in the prior art still have some shortcomings in the production process. For parts with flanging structures, it is necessary to first stamp the surface of the metal sheet and then stamp the flanging structure on the edge of the sheet during processing. This method reduces production efficiency, and the flanging angles on both sides of some parts are large, forming a flanging structure with a negative angle. After stamping, the flanging on both sides will be clamped on the forming surface, making it difficult to remove the product, which also reduces production efficiency. Summary of the Invention

[0004] The purpose of the utility model is to address the problems existing in the existing technology and propose a car tailgate outer panel stamping die with a negative angle flange. The technical problem to be solved by the utility model is: how to improve the production efficiency of processing products with a negative angle flange structure in a stamping die.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a stamping die for an automobile tailgate outer panel with a negative angle flange, comprising an upper die base and a lower die base, wherein the bottom of the upper die base is provided with a fixed upper pressure plate, the top of the lower die base is provided with lower inclined wedges that can move horizontally on both sides, the tops of the lower inclined wedges are provided with fixed lower inserts, the two sides of the lower die base are provided with fixed standard inclined wedges, the bottom of the upper die base is provided with an upper inclined guide plate, the top of the lower inclined wedge is provided with a lower inclined guide plate, The upper inclined guide plate abuts against the lower inclined guide plate, so that the side wall of the standard inclined wedge abuts against the side wall of the lower insert. The abutting portion between the standard inclined wedge and the lower insert is provided with a negative angle forming surface. An upper forming surface is provided between the bottom surface of the upper pressure plate and the top surface of the lower inclined wedge. The negative angle forming surface and the upper forming surface are provided with a tailgate outer panel for stamping. A horizontally arranged nitrogen spring is provided on the side of the lower inclined wedge close to the outside of the mold, and the other end of the nitrogen spring abuts against the lower mold base.

[0006] In this solution, the metal sheet to be processed is placed on the upper forming surface and the negative angle forming surface of the lower insert. During the mold closing process, the upper mold base moves vertically downward, and the upper inclined guide plate abuts against the lower inclined guide plate, pushing the lower inclined guide plates and the lower inclined wedge on both sides to move toward the outside of the mold. During the movement, the lower insert on the lower inclined wedge will abut against the standard inclined wedge, thereby stamping the metal sheet on the negative angle forming surface, forming a negative angle flanging on the metal sheet, and at the same time, the bottom of the upper pressure plate abuts against the top of the lower insert, pressing the metal sheet on the upper forming surface. Stamping is performed to form the required tailgate outer panel structure from the metal sheet. After the stamping is completed, the upper die seat moves upward, and the nitrogen spring on the side of the lower inclined wedge pushes the lower inclined wedge toward the center of the die, so that the lower inserts on both sides used to form the negative angle flanging are retracted inward, making it easier to remove the workpiece from the die. In this way, the upper surface of the metal sheet and the structure of the negative angle flanging can be processed simultaneously during one stamping process, which simplifies the manufacturing process and improves production efficiency. In addition, the lower insert used for processing the negative angle flanging can be reset and retracted, making it easier to remove the workpiece.

[0007] In the aforementioned automotive tailgate outer panel stamping die with a negative-angle flange, a mounting bracket is fixedly attached to the top of the lower die base. The standard bevel wedge is fixedly mounted on the mounting bracket, and the standard bevel wedge is fixedly mounted above the lower bevel wedge via the mounting bracket. Mounting the standard bevel wedge above the lower bevel wedge facilitates horizontal movement of the lower bevel wedge on the lower die base, reducing the area occupied by this structure on the die.

[0008] In the above-mentioned automobile tailgate outer panel stamping die with negative angle flange, the negative angle forming surface is recessed toward the side wall of the lower insert. The flange formed on the negative angle forming surface also recesses toward the lower insert, forming a negative angle flange.

[0009] In the aforementioned automotive tailgate outer panel stamping die with a negative-angle flange, the upper inclined guide plate has an upper inclined surface at its bottom, and the lower inclined guide plate has a lower inclined surface at its top. When the upper and lower inclined surfaces abut, the lower inclined wedge moves outward. The upper inclined guide plate pushes the lower inclined wedge outward through contact between the upper and lower inclined surfaces.

[0010] In the aforementioned automotive tailgate outer panel stamping die with a negative angle flange, a horizontally disposed slide rail is provided at the top of the lower die base, and the bottom of the lower bevel wedge is slidably connected to the slide rail. The slide rail is provided to restrict the movement direction of the lower bevel wedge, allowing it to be pushed horizontally outward.

[0011] In the aforementioned automotive tailgate outer panel stamping die with a negative-angle flange, the lower die base is provided with a stopper, and the bottom of the lower oblique wedge is provided with an abutment portion capable of abutting against the stopper. During the nitrogen spring's reset of the lower oblique wedge, the abutment portion abuts against the stopper, preventing the lower oblique wedge from colliding with the lower die base.

[0012] In the aforementioned automotive tailgate outer panel stamping die with a negative-angle flange, the lower die base is equipped with several drill platforms located around the upper forming surface. These drill platforms are equipped with retractable drill bits that extend to the upper forming surface. These drill platforms can drill holes in the tailgate outer panel during the stamping process, improving production efficiency.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. In this solution, the upper surface of the metal sheet and the structure of the negative angle flange can be processed simultaneously during a single stamping process, which simplifies the manufacturing process and improves production efficiency. In addition, the lower insert used for processing the negative angle flange can be reset and retracted, making it easy to remove the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the lower oblique wedge portion of the utility model;

[0016] Figure 2 yes Figure 3 Schematic diagram of the local enlarged structure in;

[0017] Figure 3 It is a schematic diagram of the internal structure of the lower die base of the present utility model.

[0018] In the figure, 1, upper die base; 1a, upper pressure plate; 1b, upper inclined guide plate; 1b1, upper inclined surface; 2, lower die base; 2a, limit block; 2b, slide rail; 3, lower inclined wedge; 3a, nitrogen spring; 3b, abutment part; 3c, lower inclined guide plate; 3c1, lower inclined surface; 4, lower insert; 5, standard inclined wedge; 5a, mounting frame; 6, negative angle forming surface; 7, upper forming surface; 8, tailgate outer panel; 9, drilling platform; 9a, drill bit. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] Example

[0021] like Figure 1 As shown, the stamping die includes an upper die base 1 and a lower die base 2, the bottom of the upper die base 1 is provided with a fixed upper pressure plate 1a, and the top of the lower die base 2 is provided with horizontally arranged slide rails 2b, and the slide rails 2b are provided with a slidingly connected lower inclined wedge 3, and the top of the lower inclined wedge 3 is provided with a fixed lower insert 4, and the bottom of the lower inclined wedge 3 is provided with a supporting portion 3b, and the upper die base 1 is provided with a limit block 2a, and the supporting portion 3b can be abutted against the limit block 2a, and the side of the lower inclined wedge 3 away from the die is provided with a nitrogen spring 3a, and the end of the nitrogen spring 3a is abutted against the lower die base 2.

[0022] like Figure 2 As shown, the upper die base 1 is provided with an upper inclined guide plate 1b at the bottom, and the lower inclined guide plate 3c is provided with a lower inclined guide plate 3c at the top. The upper inclined guide plate 1b is provided with an upper inclined surface 1b1 at the bottom, and the lower inclined surface 3c1 is provided at the top. When the upper inclined surface 1b1 abuts against the lower inclined surface 3c1, the lower inclined wedge 3 moves outward, and then the upper inclined guide plate 1b and the lower inclined guide plate 3c abut against each other in the horizontal direction. The lower die base 2 is provided with a standard inclined wedge 5, and a negative angle forming surface 6 is provided between the standard inclined wedge 5 and the lower insert 4. The negative angle forming surface 6 and the upper forming surface 7 are provided with a stamped tailgate outer panel 8. The lower die base 2 is provided with several drilling platforms 9, and the drilling platforms 9 are provided on the peripheral side of the upper forming surface 7. The drilling platform 9 is provided with a retractable drill bit 9a, and the drill bit 9a extends to the upper forming surface 7.

[0023] like Figure 3 As shown, a fixed mounting frame 5a is provided on the top of the lower die base 2, and the standard bevel wedge 5 is fixedly set on the mounting frame 5a. The standard bevel wedge 5 is fixedly mounted above the lower bevel wedge 3 through the mounting frame 5a, and the upper forming surface 7 is provided with stamping forming.

[0024] The working principle of this scheme is as follows: Figure 1-3 As shown, negative angle stamping structures with the same structure are set on both sides of the mold, and the metal sheet is placed on the upper forming surface 7 and the negative angle forming surface 6 of the lower insert 4. During the mold closing process, the upper mold base 1 moves vertically downward, and the upper inclined surface 1b1 of the upper inclined guide plate 1b abuts against the lower inclined surface 3c1 of the lower inclined guide plate 3c. Under the guidance of the inclined surface, the lower inclined wedges 3 on both sides move horizontally toward the outside of the mold along the direction of the slide rail 2b. During the movement, the lower insert 4 on the lower inclined wedge 3 will abut against the standard inclined wedge 5, thereby pressing the metal sheet on the negative angle forming surface 6. Stamping is performed to form a negative-angle flange on the metal sheet. At the same time, the bottom of the upper pressure plate 1a is abutted against the top of the lower insert 4 to punch the metal sheet on the upper forming surface 7, and the drill bit 9a on the drill platform 9 is extended to punch holes in the metal sheet to form the required tailgate outer panel 8 structure of the metal sheet. After the stamping is completed, the upper die base 1 moves upward, and the nitrogen spring 3a on the side of the lower inclined wedge 3 pushes the lower inclined wedge 3 to move toward the center of the mold, so that the lower inserts 4 on both sides used to form the negative-angle flange are retracted inward, making it convenient to remove the workpiece from the mold.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0026] Although this article frequently uses terms such as 1. upper die base; 1a. upper pressure plate; 1b. upper inclined guide plate; 1b1. upper inclined surface; 2. lower die base; 2a. limit block; 2b. slide rail; 3. lower inclined wedge; 3a. nitrogen spring; 3b. abutment portion; 3c. lower inclined guide plate; 3c1. lower inclined surface; 4. lower insert; 5. standard inclined wedge; 5a. mounting bracket; 6. negative angle forming surface; 7. upper forming surface; 8. tailgate outer panel; 9. drilling platform; 9a. drill bit, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A stamping die for an automobile tailgate outer panel with a negative angle flange, comprising an upper die base (1) and a lower die base (2), wherein the bottom of the upper die base (1) is provided with a fixed upper pressure plate (1a), and both sides of the top of the lower die base (2) are provided with lower inclined wedges (3) that can move horizontally, and the tops of the lower inclined wedges (3) are provided with fixed lower inserts (4), characterized in that: The lower die base (2) is provided with fixed standard bevel wedges (5) on both sides, the upper die base (1) is provided with an upper bevel guide plate (1b) at the bottom, and the lower bevel guide plate (3c) is provided on the top of the lower bevel wedge (3). The upper bevel guide plate (1b) and the lower bevel guide plate (3c) are abutted against each other, so that the side wall of the standard bevel wedge (5) abuts against the side wall of the lower insert (4). The abutting portion between the standard bevel wedge (5) and the lower insert (4) is provided with a negative angle forming surface (6). An upper forming surface (7) is provided between the bottom surface of the upper pressure plate (1a) and the top surface of the lower bevel wedge (3). A tailgate outer panel (8) for stamping is provided on the negative angle forming surface (6) and the upper forming surface (7). A horizontally arranged nitrogen spring (3a) is provided on the side of the lower bevel wedge (3) close to the outside of the mold, and the other end of the nitrogen spring (3a) abuts against the lower die base (2).

2. The automobile tailgate outer panel stamping die with negative angle flange according to claim 1, characterized in that: A fixed mounting frame (5a) is provided on the top of the lower die base (2), and the standard bevel wedge (5) is fixedly arranged on the mounting frame (5a). The standard bevel wedge (5) is fixedly mounted above the lower bevel wedge (3) through the mounting frame (5a).

3. The automobile tailgate outer panel stamping die with negative angle flange according to claim 2, characterized in that: The negative angle forming surface (6) is recessed toward the interior of the side wall of the lower insert (4).

4. The automobile tailgate outer panel stamping die with negative angle flange according to claim 1, characterized in that: The upper inclined guide plate (1b) is provided with an upper inclined surface (1b1) at the bottom, and the lower inclined surface (3c1) is provided with a lower inclined surface (3c1) at the top. When the upper inclined surface (1b1) abuts against the lower inclined surface (3c1), the lower inclined wedge (3) moves outward.

5. The automobile tailgate outer panel stamping die with negative angle flange according to claim 1, characterized in that: A horizontally arranged slide rail (2b) is provided on the top of the lower die base (2), and the bottom of the lower inclined wedge (3) is slidably connected and arranged in the slide rail (2b).

6. The automobile tailgate outer panel stamping die with negative angle flange according to claim 5, characterized in that: A limiting block (2a) is provided on the lower die base (2), and a supporting portion (3b) is provided at the bottom of the lower inclined wedge (3), and the supporting portion (3b) can be in contact with the limiting block (2a).

7. The automobile tailgate outer panel stamping die with negative angle flange according to claim 1, characterized in that: The lower die base (2) is provided with a plurality of drilling platforms (9), which are arranged on the peripheral side of the upper forming surface (7). The drilling platforms (9) are provided with retractable drill bits (9a), which extend to the upper forming surface (7).

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