A stamping and drawing die for a new energy automobile battery box chassis

Abstract

This utility model discloses a stamping and drawing die for a new energy vehicle battery box chassis, relating to the field of automotive parts technology, including an upper die and a lower die. The upper die has an upper die core, which is identical to the exterior of the product and fits perfectly with the lower die core, ensuring the quality of the drawn product. The upper die also has a square groove that mates with a square guide block of the lower die, serving as a positioning element for die assembly. Furthermore, the upper die has a pressure ring with an opening, further ensuring material flow and allowing for more complete drawing. The lower die has a square block, within which is a lower die core. The lower die core is identical to the interior of the product and fits perfectly with the upper die core, ensuring the quality of the drawn product. The square block contains a limiting guide post, which restricts the displacement of the sheet metal, preventing other problems during the stamping process. The square block also contains an ejector block, connected to a nitrogen spring below. After stamping, the nitrogen spring drives the ejector block to eject the drawn product. The lower die also has a lower die square guide block, which mates with the upper die square groove and serves as a die assembly and positioning element. The square shape simplifies the manufacturing process. By maintaining the shape of the object between the upper and lower dies during the drawing process, processing efficiency is increased, and the product is protected.

Description

Technical Field

[0001] This utility model relates to the field of stamping and drawing die technology, and more specifically to a stamping and drawing die for a new energy vehicle battery box chassis. Background Technology

[0002] In recent years, the increase in car ownership, the growth in personalized demand, and the popularization of new energy vehicles have further promoted innovation and upgrading in the auto parts industry. At the same time, auto parts manufacturing technology is also constantly improving, with intelligentization, lightweighting, and environmental protection becoming new directions for industry development, prompting the entire industrial chain to move towards greater efficiency and sustainability.

[0003] Currently, the battery box chassis of new energy vehicles are mostly made of high-strength steel plates or aluminum alloys in one piece. Traditional drawing dies are prone to problems such as excessive local thinning rate or cracking during deep drawing process due to the closed pressure ring, as well as problems when ejecting products. Utility Model Content

[0004] The purpose of this utility model is to provide a stamping and drawing die for a new energy vehicle battery box chassis, so as to solve the problems of insufficient material flow and product ejection caused by the pressure ring in the existing stamping dies in the background art when processing objects.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A stamping and drawing die for a new energy vehicle battery box chassis is characterized by comprising: an upper die core on the upper die, the upper die core being identical to the exterior of the product and fitting with the lower die core to ensure the quality of the drawn product; an upper die square groove on the upper die, the upper die square groove cooperating with the lower die square guide block of the lower die and serving as a die assembly and positioning function; and a pressure ring on the upper die, the pressure ring being open to better ensure the fluidity of the material and allow for more complete drawing.

[0007] A stamping and drawing die for a new energy vehicle battery box chassis is characterized by: a square block on the lower die, a lower die core inside the square block, the lower die core being identical to the interior of the product and fitting with the upper die core to ensure the quality of the drawn product; a limiting guide post inside the square block to restrict the displacement of the sheet metal and prevent other problems from occurring during the stamping process; an ejector block inside the square block connected to a nitrogen spring below, which, after stamping, drives the ejector block to eject the drawn product; a lower die guide post on the square block, which mates with a lower die positioning hole; and a lower die square guide block on the lower die, which mates with a square groove in the upper die and serves as a die assembly and positioning element. The use of a square shape simplifies the manufacturing process.

[0008] In a preferred embodiment of this utility model, the upper die is provided with a pressure ring. The pressure ring adopts an open structure, which can effectively control the flow resistance of the sheet metal during the stamping process, optimize the material deformation distribution, thereby significantly improving the drawing limit and avoiding local thinning or cracking defects.

[0009] In a preferred embodiment of this invention, the square block is provided with several limiting guide posts. These guide posts are used to precisely position the sheet metal and constrain its displacement during the stamping process, effectively preventing forming defects caused by material misalignment. The limiting guide posts are arranged in a uniform array within the square block. Compared to traditional integral guide structures, this distributed layout reduces processing and assembly costs. Each limiting guide post adopts a modular and independent design, facilitating individual replacement or position adjustment, significantly improving mold maintenance efficiency and process adaptability.

[0010] In a preferred embodiment of this invention, the square block contains several ejector blocks, which are linked to a nitrogen spring below them via a rigid connection mechanism. After the stamping process is completed, the nitrogen spring elastically recovers under a preset pressure, driving the ejector blocks to rise smoothly in the vertical direction, ensuring complete separation of the drawn product from the mold surface. The ejector end face of the ejector block matches the product contour and is arranged in a partitioned manner to achieve uniform force ejection.

[0011] By maintaining the shape of the object between the upper and lower dies and drawing the object, not only is processing efficiency increased, but the product is also protected.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention features a blank holder ring on the upper die. The blank holder ring has an open structure, which effectively controls the flow resistance of the sheet metal during stamping, optimizes material deformation distribution, and thus significantly improves the drawing limit, avoiding localized thinning or cracking defects. The open blank holder ring can adjust the material feeding resistance in sections, ensuring uniform flow of the sheet metal during drawing, reducing stress concentration, and improving forming stability.

[0014] The square block contains several guide posts, which are used to precisely position the sheet metal and constrain its displacement during stamping, effectively preventing forming defects caused by material misalignment. The guide posts are arranged in a uniform array within the square block; compared to traditional integral guide structures, this distributed layout reduces processing and assembly costs. Each guide post adopts a modular, independent design, facilitating individual replacement or position adjustment, significantly improving mold maintenance efficiency and process adaptability. The height and spacing of each guide post are adjustable to accommodate stamping requirements for different materials such as aluminum plates and high-strength steel, expanding the mold's application scenarios.

[0015] The square block contains several ejector blocks, which are rigidly connected to a nitrogen spring below them. After the stamping process is completed, the nitrogen spring elastically recovers under a preset pressure, driving the ejector blocks to rise smoothly in the vertical direction, ensuring complete separation of the drawn product from the mold surface. The ejector end face of the ejector block matches the product contour and is arranged in a zoned manner to achieve uniform force ejection. Using a nitrogen spring as the power source, compared with traditional mechanical ejection mechanisms, it features fast response speed and smooth, impact-free operation. By adjusting the preload of the nitrogen spring, it can adapt to the ejection requirements of steel / aluminum plates of different thicknesses. The ejection stroke is adjustable from 15-50mm, meeting the universal production requirements of various battery box chassis products. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the mold assembly structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the upper mold structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the lower mold structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the lower die, the product, and the ejection structure after drawing according to this utility model.

[0020] Figure 5 This is a cross-sectional view and a partial structural schematic diagram of the ejection mechanism of this utility model.

[0021] Figure 6 This is a schematic diagram of the sheet metal limiting structure of this utility model.

[0022] In the diagram: 1. Upper die; 2. Lower die guide post; 3. Lower die square guide block; 4. Lower die; 5. Sheet metal; 6. Sheet metal hole; 7. Lower die core; 8. Square block; 9. Blank holder ring; 10. Lower die positioning hole; 11. Blank holder ring positioning hole; 12. Upper die square groove; 13. Upper die core; 14. Sheet metal guide post; 15. Limiting guide post; 16. Ejector block; 17. Draw product; 18. Nitrogen spring Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6This utility model provides a technical solution:

[0025] A stamping and drawing die for a new energy vehicle battery box chassis is characterized by comprising: an upper die 1 having an upper die core 13, the upper die core 13 being identical to the exterior of the product and fitting with a lower die core 7 to ensure the quality of the drawn product; an upper die 1 having an upper die square groove 12, the upper die square groove 12 cooperating with a lower die square guide block 3 of the lower die 4 and serving as a die assembly and positioning function; and an upper die 1 having a pressure ring 9, the pressure ring 9 being open to better ensure the fluidity of the material and allow for more complete drawing.

[0026] A stamping and drawing die for a new energy vehicle battery box chassis is characterized by the following: a square block 8 is provided on the lower die 4, and a lower die core 7 is provided inside the square block 8. The lower die core 7 is completely identical to the interior of the product and fits with the upper die core 13 to ensure the quality of the drawn product; a limiting guide post 15 is provided inside the square block 8, which limits the displacement of the sheet material and prevents other problems from occurring during the stamping process; an ejector block 16 is provided inside the square block 8, which is connected to a nitrogen spring 18 below. After stamping is completed, the nitrogen spring drives the ejector block 16 to eject the drawn product 17; a lower die guide post 2 is provided on the square block 8, which cooperates with the lower die positioning hole 10; a lower die square guide block 3 is provided on the lower die 4, which cooperates with the upper die square groove 12 and plays a role in die assembly and positioning. The use of a square shape makes the manufacturing process simpler.

[0027] Further improvements, such as Figure 2 As shown: The upper die is provided with a pressure ring, which adopts an open structure. During the stamping process, it can effectively control the flow resistance of the sheet metal, optimize the material deformation distribution, thereby significantly improving the drawing limit and avoiding local thinning or cracking defects.

[0028] Further improvements, such as Figure 4-5 As shown: The square block 8 is provided with several ejector blocks 16, which are linked to a nitrogen spring 18 below them via a rigid connection mechanism. After the stamping process is completed, the nitrogen spring 18 elastically recovers under a preset pressure, driving the ejector blocks 16 to rise smoothly in the vertical direction, ensuring that the drawn product 17 is completely separated from the mold surface. The ejector end face of the ejector block 16 matches the product contour and is arranged in a partitioned manner to achieve uniform force ejection.

[0029] Further improvements, such as Figure 6As shown: The square block 8 is equipped with several limiting guide posts 15. These limiting guide posts 15 are used to accurately position the sheet metal 5 and constrain its displacement during the stamping process, effectively preventing forming defects caused by material misalignment. The limiting guide posts 15 are arranged in a uniform array within the square block. Compared to the traditional integral guide structure, this distributed layout can reduce processing and assembly costs. Each limiting guide post 15 adopts a modular and independent design, which facilitates individual replacement or position adjustment, significantly improving mold maintenance efficiency and process adaptability.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stamping and drawing die for a battery box chassis of a new energy vehicle, characterized in that, It includes: Upper mold (1); the upper mold (1) is provided with an upper mold core (13), the upper mold core (13) is completely the same as the outside of the product, and fits with the lower mold core (7) to ensure the quality of the drawn product; the upper mold (1) is provided with an upper mold square groove (12), the upper mold square groove (12) cooperates with the lower mold square guide block (3) of the lower mold (4), and plays the role of mold assembly positioning; the upper mold (1) is provided with a pressure ring (9), the pressure ring (9) is open, which can better ensure the fluidity of the material and make it more fully drawn.

2. The stamping and drawing die for a new energy vehicle battery box chassis according to claim 1, characterized in that, It includes: The lower die (4) is provided with a square block (8), and a lower die core (7) is provided inside the square block (8). The lower die core (7) is completely identical to the interior of the product and fits with the upper die core (13) to ensure the quality of the drawn product. A limiting guide post (15) is provided inside the square block (8). The limiting guide post (15) restricts the displacement of the sheet metal (5) to prevent other problems from occurring during the stamping process. An ejector block (16) is provided inside the square block (8). The square block (8) is connected to the nitrogen spring (18) below. After the stamping is completed, the nitrogen spring (18) drives the ejector block (16) to eject the drawn product (17). The square block (8) is provided with a lower mold guide post (2), which cooperates with the lower mold positioning hole (10). The lower mold (4) is provided with a lower mold square guide block (3), which cooperates with the upper mold square groove (12) and plays a role in mold assembly and positioning. The square shape makes the production simpler.

3. The stamping and drawing die for a new energy vehicle battery box chassis according to claim 1, characterized in that: The upper die (1) is provided with a pressure ring (9), which is open in form. During the stamping process, it can ensure the fluidity of the material and make it more fully drawn.

4. The stamping and drawing die for a new energy vehicle battery box chassis according to claim 2, characterized in that: The square block (8) is provided with a limiting guide post (15). The limiting guide post (15) positions the sheet material (5) and restricts the sheet material (5) from displacement, preventing other problems from occurring during the stamping process. The limiting guide post (15) is evenly distributed in the square block (8). Compared with the traditional method, this setting achieves the effect of reducing costs. Each limiting guide post (15) is independent of each other, making it convenient to replace and adjust.

5. The stamping and drawing die for a new energy vehicle battery box chassis according to claim 2, characterized in that: The square block (8) is provided with an ejector block (16), which is connected to the nitrogen spring (18) below it. When the stamping is completed, the nitrogen spring (18) drives the ejector block (16) to eject the drawn product (17).

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