A stamping die for saving sheet material for a vehicle door inner panel
Patent Information
- Application Number
- CN202522341824.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-05
AI Technical Summary
然而，传统的拉深模具，传统的单动模具仅使用一个下压边圈，压边圈形状由产品顶面和制件深度决定，拉延深度通常在100—130mm左右，在窗框和门槛两侧，拉延补偿也就会各需要100—130mm左右的板料，因为这些板料是在废料区，也就直接拉低了制件的材料利用率，因此需要一种为车门内板节省板料的冲压模具来解决上述问题
本实用新型，通过设置有上模组件和下模组件，上压机向下移动，上压边圈、第一上压料芯和第二上压料芯随之向下移动；板料在上压边圈和下压边圈的固定下，随着上压机继续向下移动，直至上模座和下模座完全闭合，到达下死点；在上压边圈和下压边圈闭合时，第一下压料芯和第二下压料芯对板料进行固定；车门内板的窗框及门槛侧设计两个独立的第一上压料芯和第二上压料芯；车门内板的铰链及门锁侧采用传统的压边圈，车门内板的窗框及门槛侧设计两个独立的第一下压料芯和第二下压料芯，最大程度的减少废料区域，提高材料利率用，以达到节省板料的目的；
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Figure CN224794398U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stamping die technology, and in particular relates to a stamping die for saving sheet metal for the inner panel of a car door. Background Technology
[0002] The inner door panel is the component on the inside of a car door that is closest to the passenger. The manufacturing of the inner door panel uses different core processes depending on the material. Metal inner panels are mainly produced by stamping, while plastic inner panels are mainly produced by injection molding. In the stamping process of metal inner panels, a blanking die is used to cut the metal coil into individual blanks suitable for stamping, determining the initial outline. Then, a deep drawing die is used to "draw" the flat blank into a semi-finished product with a three-dimensional shape, forming the basic structure of the inner panel, such as curved surfaces and recesses. Subsequently, a trimming die is used to remove the excess edges after deep drawing, and a punching die is used to punch out mounting holes. However, traditional deep drawing dies, especially single-action dies, only use one pressure ring. The shape of the pressure ring is determined by the top surface of the product and the depth of the part. The drawing depth is usually around 100-130mm. On both sides of the window frame and door sill, the drawing compensation requires about 100-130mm of sheet metal each. Since this sheet metal is in the scrap area, it directly reduces the material utilization rate of the part. Therefore, a stamping die that saves sheet metal for the inner door panel is needed to solve the above problems. Utility Model Content
[0003] The purpose of this utility model embodiment is to provide a stamping die for saving sheet metal in the inner panel of a car door, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A stamping die for saving sheet metal in the inner panel of a car door includes: The upper die assembly includes an upper die base, an upper die cavity, a first upper pressing core, a second upper pressing core, and an upper pressing ring, all fixed to an upper press. The upper die cavity is fixedly installed on the upper die base, and the upper pressing ring is installed on the upper die base and looped around the upper die cavity. The upper pressing ring is stepped, and both the first and second upper pressing cores are installed on the upper pressing ring. The lower die assembly includes a lower die base, a lower punch, a first lower pressing core, a second lower pressing core, and a lower pressing edge ring, all fixed to the lower die base. The lower punch is fixedly installed on the lower die base. The first and second lower pressing cores are both installed on the lower pressing edge ring, which is stepped. The lower pressing edge ring is installed on the lower die base and loops around the lower punch. The lower die base has a through hole for the air ejector rod of the lower die press to pass through. The upper die and the lower punch, the first upper pressing core and the first lower pressing core, and the second lower pressing core and the second upper pressing core are all adapted to each other. The lower die base and the upper die base have corresponding sidewalls that are adapted to each other.
[0005] In a further technical solution, the lower die assembly also includes multiple limiting blocks, which are installed on the side of the lower punch, and the second lower pressing core is slidably inserted into the limiting blocks.
[0006] In a further technical solution, the lower mold assembly also includes multiple limiting studs, the second lower pressing core is provided with multiple limiting holes, the limiting studs are installed in the limiting holes, and the lower end of the limiting studs is installed in the lower pressing edge ring.
[0007] In a further technical solution, the upper mold assembly further includes a plurality of first wear-resistant sliders, and the lower mold assembly further includes a plurality of second wear-resistant sliders. The plurality of first wear-resistant sliders are respectively disposed on the first upper pressure core and the second upper pressure core, and the plurality of second wear-resistant sliders are respectively disposed on the first lower pressure core and the second lower pressure core.
[0008] In a further technical solution, the upper mold assembly further includes a plurality of first guide blocks, and the lower mold assembly further includes a plurality of second guide blocks. The plurality of first guide blocks are respectively disposed on the first upper pressing core and the second upper pressing core, and the plurality of second guide blocks are respectively disposed on the first lower pressing core and the second lower pressing core.
[0009] In a further technical solution, the upper mold assembly also includes a plurality of elastic elements, the elastic elements being connected to the upper mold base and the first upper pressure core, as well as the relative contact surfaces of the upper mold base and the second upper pressure core.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention, by comprising an upper mold assembly and a lower mold assembly, allows the upper press to move downwards, along with the upper pressure ring, the first upper pressure core, and the second upper pressure core. The sheet metal, fixed by the upper and lower pressure rings, continues to move downwards with the upper press until the upper and lower mold bases are fully closed, reaching the bottom dead center. When the upper and lower pressure rings are closed, the first and second lower pressure cores fix the sheet metal. The window frame and sill sides of the inner door panel are designed with two independent first and second upper pressure cores. The hinge and door lock sides of the inner door panel use traditional pressure rings, while the window frame and sill sides are designed with two independent first and second lower pressure cores, minimizing waste areas and improving material utilization to achieve sheet metal savings. This invention incorporates an elastic element connected to the upper mold base and the first upper pressure core, as well as the relative contact surfaces of the upper mold base and the second upper pressure core. When the first and second upper pressure cores contact the first and second lower pressure cores respectively, the elastic element deforms, causing the first and second upper pressure cores to move upward relative to the upper die until the upper mold base reaches its bottom dead center. When the upper mold base opens, the first and second upper pressure cores move upward accordingly. When the first and second upper pressure cores leave the first and second lower pressure cores, the elastic element returns to its original state, and the first and second upper pressure cores return to their open state.
[0011] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the lower mold assembly of this utility model; Figure 3 This is a structural diagram of the second wear-resistant slider and the second guide block of this utility model; Figure 4 This is a structural diagram of the first and second pressing cores of this utility model; Figure 5 This is a structural diagram of the lower pressure ring of this utility model; Figure 6 This is a structural diagram of the lower punch of this utility model; Figure 7 This is a structural diagram of the upper mold assembly of this utility model.
[0013] In the diagram: 1. Upper mold assembly; 11. Upper mold base; 12. Upper die; 13. First upper pressure core; 14. Second upper pressure core; 15. Upper pressure ring; 16. First wear-resistant slider; 17. First guide block; 18. Elastic element; 2. Lower mold assembly; 21. Lower mold base; 22. Lower punch; 221. Through hole; 23. First lower pressure core; 24. Second lower pressure core; 241. Limiting hole; 25. Lower pressure ring; 26. Limiting block; 27. Limiting stud; 28. Second wear-resistant slider; 29. Second guide block. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0016] like Figures 1 to 7 As shown, this utility model embodiment provides a stamping die for saving sheet metal in the inner panel of a car door, comprising: The upper mold assembly 1 includes an upper mold base 11 fixed to the upper press, an upper die 12, a first upper pressing core 13, a second upper pressing core 14, and an upper pressing ring 15. The upper die 12 is fixedly installed on the upper mold base 11, and the upper pressing ring 15 is installed on the upper mold base 11 and is sleeved around the upper die 12. The upper pressing ring 15 is set in a stepped manner, and the first upper pressing core 13 and the second upper pressing core 14 are both installed on the upper pressing ring 15. The lower die assembly 2 includes a lower die base 21 fixed to the lower press, a lower punch 22, a first lower pressing core 23, a second lower pressing core 24, and a lower pressing ring 25. The lower punch 22 is fixedly installed on the lower die base 21. The first lower pressing core 23 and the second lower pressing core 24 are both installed on the lower pressing ring 25. The lower pressing ring 25 is stepped and is installed on the lower die base 21 and surrounds the lower punch 22. The lower die base 21 is provided with a through hole 221 for the air ejector rod of the lower press to pass through. The upper die 12 is adapted to the lower punch 22, the first upper pressing core 13 is adapted to the first lower pressing core 23, and the second lower pressing core 24 is adapted to the second upper pressing core 14. The lower die base 21 and the upper die base 11 have corresponding sidewalls that are adapted to each other. In this embodiment, the upper press moves downward, and the upper pressing ring 15, the first upper pressing core 13, and the second upper pressing core 14 move downward accordingly. When they reach a certain height, the upper and lower sides of the upper pressing ring 15 contact the upper and lower sides of the lower pressing ring 25 and close. The sheet metal, fixed by the upper pressing ring 15 and the lower pressing ring 25, continues to move downward with the upper press until the upper die holder 11 and the lower die holder 21 are completely closed, reaching the bottom dead center. When the upper pressing ring 15 and the lower pressing ring 25 are closed, the first lower pressing core 23 contacts the first upper pressing core 14. The second lower pressing core 24 contacts the second upper pressing core 14 to fix the sheet metal; in this way, the window frame and sill side of the inner door panel are designed with two independent first upper pressing cores 13 and second upper pressing cores 14; the hinge and door lock side of the inner door panel adopts a traditional pressing ring, and the window frame and sill side of the inner door panel are designed with two independent first lower pressing cores 23 and second lower pressing cores 24, thereby minimizing the supplementary vertical wall height on the window frame and sill side, minimizing the waste area, improving material utilization, and achieving the purpose of saving sheet metal; Specifically, the lower die assembly 2 also includes a plurality of limiting blocks 26, which are installed on the side of the lower punch 22, and the second lower pressing core 24 is slidably inserted into the limiting blocks 26. In this embodiment, during the downward movement of the first pressing core 23 and the second pressing core 24, a limiting block 26 of corresponding height will be set on the lower mold base 21 to ensure that the first pressing core 23 and the second pressing core 24 will not continue to move downward with the pressing edge ring 25. At this time, the first upper pressing core 13 and the second upper pressing core 14 also remain in the closed state and no longer move downward. Specifically, the lower mold assembly 2 also includes multiple limiting studs 27, the second pressing core 24 is provided with multiple limiting holes 241, the limiting studs 27 are installed in the limiting holes 241, and the lower end of the limiting studs 27 is installed in the pressing edge ring 25. Specifically, the upper mold assembly 1 further includes a plurality of first wear-resistant sliders 16, and the lower mold assembly 2 further includes a plurality of second wear-resistant sliders 28. The plurality of first wear-resistant sliders 16 are respectively disposed on the first upper pressure core 13 and the second upper pressure core 14, and the plurality of second wear-resistant sliders 28 are respectively disposed on the first lower pressure core 23 and the second lower pressure core 24. Specifically, the upper mold assembly 1 further includes a plurality of first guide blocks 17, and the lower mold assembly 2 further includes a plurality of second guide blocks 29. The plurality of first guide blocks 17 are respectively disposed on the first upper pressing core 13 and the second upper pressing core 14, and the plurality of second guide blocks 29 are respectively disposed on the first lower pressing core 23 and the second lower pressing core 24. Specifically, the upper mold assembly 1 also includes a plurality of elastic elements 18, which are connected to the upper mold base 11 and the first upper pressing core 13, as well as the relative contact surfaces of the upper mold base 11 and the second upper pressing core 14. In this embodiment, when the first upper pressing core 13 and the second upper pressing core 14 contact the first lower pressing core 23 and the second lower pressing core 24 respectively, the elastic element 18 deforms, causing the first upper pressing core 13 and the second upper pressing core 14 to move upward relative to the upper die 12 until the upper die holder 11 reaches the lower dead point; when the upper die holder 11 opens, the first upper pressing core 13 and the second upper pressing core 14 move upward accordingly; when the first upper pressing core 13 and the second upper pressing core 14 leave the first lower pressing core 23 and the second lower pressing core 24, the elastic element 18 recovers, and the first upper pressing core 13 and the second upper pressing core 14 return to the open state.
[0017] The working principle of this utility model is as follows: First, the upper press moves downward, and the upper pressing ring 15, the first upper pressing core 13, and the second upper pressing core 14 move downward accordingly. When it moves down to a certain height, the upper and lower sides of the upper pressing ring 15 contact the upper and lower sides of the lower pressing ring 25 and close. With the upper pressing ring 15 and the lower pressing ring 25 fixed, the sheet metal continues to move downward with the upper press until the upper die holder 11 and the lower die holder 21 are completely closed and the bottom dead point is reached. When the upper pressure ring 15 and the lower pressure ring 25 are closed, the first lower pressure core 23 contacts the first upper pressure core 13, and the second lower pressure core 24 contacts the second upper pressure core 14 to fix the sheet material. Since the first pressing core 23 is mounted on the pressing edge ring 25, the first pressing core 23 and the pressing edge ring 25 have relative movement, so that the stroke of the first pressing core 23 is different from that of the pressing edge ring 25; similarly, the stroke of the second pressing core 24 is different from that of the pressing edge ring 25; in this way, the drawing depth of the upper pressing edge ring 15 and the lower pressing edge ring 25 in four directions can be minimized, and the sheet can be lifted at the same time. In this way, in the upper mold assembly 1, two independent first upper pressing cores 13 and second upper pressing cores 14 are designed on the window frame and sill side of the inner door panel; in the lower mold assembly 2, the hinge and door lock side of the inner door panel adopts a traditional pressing ring, and two independent first lower pressing cores 23 and second lower pressing cores 24 are designed on the window frame and sill side of the inner door panel, thereby minimizing the supplementary vertical wall height on the window frame and sill side and minimizing the waste area, improving material utilization, and achieving the purpose of saving sheet metal. During the downward movement of the first pressing core 23 and the second pressing core 24, a limit block 26 of corresponding height will be set on the lower mold base 21 to ensure that the first pressing core 23 and the second pressing core 24 will not continue to move downward with the pressing edge ring 25. At this time, the first upper pressing core 13 and the second upper pressing core 14 also remain in the closed state and no longer move downward. When the first upper pressing core 13 and the second upper pressing core 14 come into contact with the first lower pressing core 23 and the second lower pressing core 24 respectively, the elastic element 18 deforms, causing the first upper pressing core 13 and the second upper pressing core 14 to move upward relative to the upper die 12 until the upper die holder 11 reaches the lower dead point; when the upper die holder 11 opens, the first upper pressing core 13 and the second upper pressing core 14 move upward accordingly; when the first upper pressing core 13 and the second upper pressing core 14 leave the first lower pressing core 23 and the second lower pressing core 24, the elastic element 18 recovers, causing the first upper pressing core 13 and the second upper pressing core 14 to return to the open state; The air ejector rod of the lower press passes through the perforation 221. At this time, the force of the air ejector rod acts directly on the lower pressing edge ring 25, and the air ejector rod serves as the power system for the lower pressing edge ring 25. The first lower pressing core 23 and the second lower pressing core 24 are guided by the profile of the lower pressing edge ring 25. When the upper pressing edge ring 15, the first upper pressing core 13, and the second upper pressing core 14 move downward with the upper press and come into contact with the lower pressing edge ring 25, the first lower pressing core 23, and the second lower pressing core 24, the lower pressing edge ring 25, the first lower pressing core 23, and the second lower pressing core 24 are pressed and move downward with the sheet metal. Since the lower pressing edge ring 25 has a larger stroke, when the first lower pressing core 23 and the second lower pressing core 24 reach the bottom dead center, the lower pressing edge ring 25 continues to be forced and moves downward until the lower pressing edge ring 25 reaches the bottom dead center, at which point the forming is completed. Finally, the forming process ends, the upper die holder 11 opens upward with the upper press, and the upper pressure ring 15, the first upper pressure core 13 and the second upper pressure core 14 open downward under the action of gravity; the lower pressure ring 25 is pushed upward under the action of the ejector rod, returning to the open height, and the first lower pressure core 23 and the second lower pressure core 24 are lifted by the upper contact surface of the lower pressure ring 25 and also return to the open height; the formed sheet metal is pushed out of the lower punch 22 along with the lower pressure ring 25, and at this time the stamping is completed.
[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A stamping die for saving sheet metal in the inner panel of a car door, characterized in that, include: The upper mold assembly (1) includes an upper mold base (11) fixed to the upper press, an upper die (12), a first upper pressing core (13), a second upper pressing core (14), and an upper pressing ring (15). The upper die (12) is fixedly installed on the upper mold base (11), and the upper pressing ring (15) is installed on the upper mold base (11) and is sleeved around the upper die (12). The upper pressing ring (15) is stepped, and the first upper pressing core (13) and the second upper pressing core (14) are both installed on the upper pressing ring (15). The lower die assembly (2) includes a lower die base (21) fixed to the lower press, a lower punch (22), a first lower pressing core (23), a second lower pressing core (24), and a lower pressing ring (25). The lower punch (22) is fixedly installed on the lower die base (21). The first lower pressing core (23) and the second lower pressing core (24) are both installed on the lower pressing ring (25). The lower pressing ring (25) is stepped. The upper die (12) is installed on the lower die base (21) and is ringed around the lower punch (22). The lower die base (21) is provided with a through hole (221) for the air ejector rod of the lower press to pass through. The upper die (12) and the lower punch (22), the first upper pressure core (13) and the first lower pressure core (23), and the second lower pressure core (24) and the second upper pressure core (14) are all adapted to each other. The lower die base (21) and the upper die base (11) are adapted to each other on opposite sidewalls.
2. The stamping die for saving sheet metal for the inner panel of a car door according to claim 1, characterized in that: The lower die assembly (2) also includes a plurality of limiting blocks (26), which are installed on the side of the lower punch (22), and the second lower pressing core (24) is slidably inserted into the limiting blocks (26).
3. A stamping die for saving sheet metal for the inner panel of a car door according to claim 2, characterized in that: The lower die assembly (2) also includes a plurality of limiting studs (27), the second lower pressing core (24) is provided with a plurality of limiting holes (241), the limiting studs (27) are installed in the limiting holes (241), and the lower end of the limiting studs (27) is installed in the lower pressing edge ring (25).
4. A stamping die for saving sheet metal for the inner panel of a car door according to claim 3, characterized in that: The upper mold assembly (1) further includes a plurality of first wear-resistant sliders (16), and the lower mold assembly (2) further includes a plurality of second wear-resistant sliders (28). The plurality of first wear-resistant sliders (16) are respectively disposed on the first upper pressure core (13) and the second upper pressure core (14), and the plurality of second wear-resistant sliders (28) are respectively disposed on the first lower pressure core (23) and the second lower pressure core (24).
5. A stamping die for saving sheet metal for the inner panel of a car door according to claim 4, characterized in that: The upper mold assembly (1) further includes a plurality of first guide blocks (17), and the lower mold assembly (2) further includes a plurality of second guide blocks (29). The plurality of first guide blocks (17) are respectively disposed on the first upper pressure core (13) and the second upper pressure core (14), and the plurality of second guide blocks (29) are respectively disposed on the first lower pressure core (23) and the second lower pressure core (24).
6. A stamping die for saving sheet metal for the inner panel of a car door according to claim 4, characterized in that: The upper mold assembly (1) also includes a plurality of elastic elements (18), which are connected to the upper mold base (11) and the first upper pressure core (13), as well as the relative contact surfaces of the upper mold base (11) and the second upper pressure core (14).