A low-pressure casting mold for producing a lightweight aluminum subframe with accessories

Abstract

This utility model relates to a low-pressure casting mold for producing lightweight aluminum subframes with accessories, comprising an upper mold and a lower mold, which are stacked vertically to form a frame mold cavity. An accessory upper mold is mounted on the rear side of the upper mold, and an accessory lower mold is mounted on the rear side of the lower mold. The accessory upper and lower molds are stacked vertically. Two first material outlets are symmetrically arranged on the rear part of the upper end face of the upper mold, two second material outlets are symmetrically arranged on the middle part of the upper end face of the upper mold, and two third material outlets are symmetrically arranged on the front part of the upper end face of the upper mold. A rear expansion flow channel is provided between the middle of the front side of the frame mold cavity and the first material outlets. This utility model features multi-purpose molds, improved production efficiency, reduced costs, and ensured consistent product quality.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, and in particular to a low-pressure casting mold for producing a lightweight aluminum subframe with accessories. Background Technology

[0002] As the automotive industry continues to grow its demand for energy conservation, emission reduction, and performance improvement, lightweighting has become a key development direction for automobile manufacturing. Aluminum subframes, with their low density and high strength, are widely used in automobile chassis systems, which can effectively reduce vehicle weight, improve fuel economy and handling performance. At the same time, accessories such as brackets and connectors work in conjunction with the aluminum subframe and are also crucial to the overall performance of the vehicle.

[0003] In traditional production models, aluminum subframes and accessories are typically manufactured using different molds and processes. This not only leads to high mold development costs, long production cycles, and low equipment utilization, but also increases the complexity of production management. Furthermore, products produced by different molds vary in dimensional accuracy, surface quality, and internal structure. During subsequent assembly, it is difficult to ensure precise matching and coordinated operation between components, affecting the overall vehicle performance and reliability.

[0004] Therefore, it is essential to develop a die-casting mold that solves the above problems. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a low-pressure casting mold for the production of lightweight aluminum subframes with accessories, which has the characteristics of multi-purpose mold, improved production efficiency, reduced cost, and ensured product quality consistency.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A low-pressure casting mold for producing lightweight aluminum subframes with accessories is provided, including an upper mold and a lower mold. The upper mold and the lower mold are stacked vertically, forming a frame mold cavity between them. An accessory upper mold is installed on the rear side of the upper mold, and an accessory lower mold is installed on the rear side of the lower mold. The accessory upper mold and the accessory lower mold are stacked vertically. Two first material outlets are symmetrically arranged on the rear part of the upper end face of the upper mold, and two second material outlets are symmetrically arranged in the middle part of the upper end face of the upper mold. The upper mold has two symmetrically arranged third material outlets on its upper front end. A rear expansion flow channel is provided between the middle of the front side of the frame mold cavity and the first material outlet. The left and right sides of the frame mold cavity have middle expansion flow channels connecting the frame mold cavity and the second material outlet. The front side of the frame mold cavity has a front expansion flow channel connecting the frame mold cavity and the third material outlet. The upper mold and lower mold of the accessory component form two symmetrical accessory mold cavities. The upper mold of the accessory component has a fourth material outlet, which is connected to the accessory mold cavity through the accessory flow channel.

[0007] This technical solution uses a first, second, and third material inlet to facilitate the rapid filling of the chassis mold cavity with molten aluminum alloy, thereby improving production efficiency. Additionally, an upper and lower mold for the accessories are added to ensure their molding. A fourth material inlet facilitates filling the accessory mold cavity. Furthermore, rear, middle, and front expansion channels are used to increase the flow rate of the green leaf material, further ensuring product quality and improving molding efficiency.

[0008] As a supplement to this technical solution, a left core puller is installed at the left side between the upper mold and the lower mold, and a right core puller is installed at the right side between the upper mold and the lower mold. The central expansion channel is set on the upper side of the left core puller or the right core puller, and is connected to the frame mold cavity through several branch channels. In this technical solution, the left and right core pullers are set to ensure that the left and right sides of the product are formed.

[0009] As a supplement to this technical solution, riser structures are provided at the four corners of the frame mold cavity, the rear expansion channel is connected to the two riser structures located at the rear, and the front expansion channel is connected to the two riser structures located at the front.

[0010] As a supplement to this technical solution, the upper and lower molds are equipped with a number of molding inserts that are inserted into the frame mold cavity. The molding inserts are equipped with ejector pin structures that extend from the upper end face of the upper mold or the lower end face of the lower mold. This technical solution uses molding inserts to facilitate the smooth molding of local structures on the frame and improve product quality. The installation of ejector pin structures facilitates product ejection.

[0011] As a supplement to this technical solution, the upper end of the lower mold is provided with upward protruding embedded steps at both the front and rear ends. By setting the embedded steps, it is ensured that the upper mold and the lower mold can be more tightly joined, thus ensuring the sealing degree of the mold.

[0012] As a supplement to this technical solution, a casting sand core corresponding to the vehicle frame mold cavity is embedded and installed on the upper surface of the lower mold. By installing the casting sand core, the degree of product completion is ensured.

[0013] Beneficial effects: This utility model relates to a low-pressure casting mold for producing lightweight aluminum subframes with accessories. By setting a first, second, and third sprue, it facilitates the rapid filling of the frame mold cavity with molten aluminum alloy, improving production efficiency. Simultaneously, the addition of an upper and lower mold for accessories ensures their molding. A fourth sprue facilitates filling the accessory mold cavity. The setting of a rear, middle, and front extended flow channel increases the flow rate of the green leaf material, further ensuring product quality and improving molding efficiency. It features multi-purpose mold design, improved production efficiency, reduced costs, and ensured consistent product quality. Attached Figure Description

[0014] Figure 1 This is the front view of this utility model;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a top view of the present invention after the upper mold has been removed;

[0017] Figure 4 This is a structural view of the present invention after the upper mold has been removed;

[0018] Figure 5 This is a top view of the present invention after removing the upper mold and the frame mold cavity;

[0019] Figure 6 This is a structural view of the present invention after removing the upper mold and the frame mold cavity.

[0020] Illustration: 1. Upper mold, 2. Lower mold, 3. Upper mold for accessories, 4. Lower mold for accessories, 5. First sprue, 6. Second sprue, 7. Third sprue, 8. Fourth sprue, 9. Molding insert, 10. Ejector pin structure, 11. Rear expansion runner, 12. Middle expansion runner, 13. Front expansion runner, 14. Frame mold cavity, 15. Riser structure, 16. Accessory mold cavity, 17. Accessory runner, 18. Casting sand core, 19. Left core pull, 20. Right core pull, 21. Embedded step. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0022] The embodiments of this utility model relate to a low-pressure casting mold for producing a lightweight aluminum subframe with accompanying parts, such as... Figure 1 — Figure 6 As shown, the device includes an upper mold 1 and a lower mold 2, which are stacked vertically to form a frame mold cavity 14. An auxiliary upper mold 3 is mounted on the rear side of the upper mold 1, and an auxiliary lower mold 4 is mounted on the rear side of the lower mold 2. The auxiliary upper mold 3 and auxiliary lower mold 4 are stacked vertically. Two first material outlets 5 are symmetrically arranged at the rear of the upper end face of the upper mold 1, two second material outlets 6 are symmetrically arranged at the middle of the upper end face of the upper mold 1, and two third material outlets 7 are symmetrically arranged at the front of the upper end face of the upper mold 1. A rear expansion channel 11 is provided between the front middle of the frame mold cavity 14 and the first material port 5. The left and right sides of the frame mold cavity 14 are provided with middle expansion channels 12 connecting the frame mold cavity 14 and the second material port 6. The front side of the frame mold cavity 14 is provided with a front expansion channel 13 connecting the frame mold cavity 14 and the third material port 7. Two accessory mold cavities 16 are formed between the accessory upper mold 3 and the accessory lower mold 4. The accessory upper mold 3 is provided with a fourth material port 8, which is connected to the accessory mold cavity 16 through the accessory flow channel 17.

[0023] In this technical solution, the first material outlet 5, the second material outlet 6, and the third material outlet 7 are set to facilitate the rapid filling of aluminum alloy liquid into the frame mold cavity 14, thereby improving the production efficiency of the product. At the same time, the upper mold 3 and the lower mold 4 of the accessory are added to ensure the molding of the accessory. The fourth material outlet 8 is used to facilitate the filling of the accessory mold cavity 16. The rear expansion channel 11, the middle expansion channel 12, and the front expansion channel 13 are set to increase the flow rate of the green leaf entering at the same time, further ensuring product quality and improving the molding efficiency of the product.

[0024] As a supplement to this technical solution, a left core puller 19 is installed on the left side between the upper mold 1 and the lower mold 2, and a right core puller 20 is installed on the right side between the upper mold 1 and the lower mold 2. The central expansion channel 12 is located on the upper side of the left core puller 19 or the right core puller 20, and is connected to the frame mold cavity 14 through several branch channels. In this technical solution, the left core puller 19 and the right core puller 20 are set to ensure that the left and right sides of the product are formed.

[0025] As a supplement to this technical solution, riser structures 15 are provided at the four corners of the frame mold cavity 14, the rear expansion channel 11 is connected to the two riser structures 15 located at the rear, and the front expansion channel 13 is connected to the two riser structures 15 located at the front.

[0026] As a supplement to this technical solution, a plurality of molding inserts 9 are installed in the upper mold 1 and the lower mold 2, which are inserted into the frame mold cavity 14. Ejector pin structures 10 are installed on the molding inserts 9, and the ejector pin structures 10 extend out of the upper end face of the upper mold 1 or the lower end face of the lower mold 2. This technical solution uses the installation of molding inserts 9 to facilitate the smooth molding of local structures on the frame and improve the quality of the product. The installation of ejector pin structures 10 facilitates the ejection of the product.

[0027] As a supplement to this technical solution, the upper front and rear ends of the lower mold 2 are provided with upward protruding embedded steps 21. By setting the embedded steps 21, it is ensured that the upper mold 1 and the lower mold 2 can be more tightly combined, thus ensuring the sealing degree of the mold.

[0028] As a supplement to this technical solution, a casting sand core 18 corresponding to the vehicle frame mold cavity 14 is embedded and installed on the upper surface of the lower mold 2. By installing the casting sand core 18, the degree of product completion is ensured.

[0029] Example

[0030] This mold is used in a simple low-pressure casting process. Its main mold-closing structure is relatively simple. During installation, the mold closing and opening are controlled by a mold-closing machine. During production, molten aluminum is injected into the frame mold cavity 14 through the casting structure from the first sprue 5, the second sprue 6, and the third sprue 7. There are two sprues for each of the first sprue 5, the second sprue 6, and the third sprue 7. The molten aluminum alloy is injected simultaneously, allowing it to flow quickly along the casting sand core 18 and quickly form a complete product. At the same time, the rear expansion channel 11, the middle expansion channel 12, and the front expansion channel 13 increase the flow direction of the molten aluminum alloy, thereby ensuring that the product will not have local defects and further improving the production efficiency. After the molten aluminum alloy is injected, it is cooled and formed. After the product is formed, the mold is opened by the mold-closing machine, and the product is ejected by the ejector pin structure 10.

Claims

1. A low pressure casting mold for producing a lightweight aluminum subframe with an attached part, characterized by: The system includes an upper mold (1) and a lower mold (2), which are stacked vertically. A frame mold cavity (14) is formed between the upper mold (1) and the lower mold (2). An accessory upper mold (3) is installed on the rear side of the upper mold (1), and an accessory lower mold (4) is installed on the rear side of the lower mold (2). The accessory upper mold (3) and accessory lower mold (4) are stacked vertically. Two first material outlets (5) are symmetrically arranged on the rear part of the upper end face of the upper mold (1), two second material outlets (6) are symmetrically arranged on the middle part of the upper end face of the upper mold (1), and two third material outlets (7) are symmetrically arranged on the front part of the upper end face of the upper mold (1). A rear expansion channel (11) is provided between the front middle of the frame mold cavity (14) and the first material port (5). A middle expansion channel (12) connecting the frame mold cavity (14) and the second material port (6) is provided on the left and right sides of the frame mold cavity (14). A front expansion channel (13) connecting the frame mold cavity (14) and the third material port (7) is provided on the front side of the frame mold cavity (14). Two accessory mold cavities (16) are formed between the accessory upper mold (3) and the accessory lower mold (4). A fourth material port (8) is provided on the accessory upper mold (3). The fourth material port (8) is connected to the accessory mold cavity (16) through the accessory flow channel (17).

2. The low-pressure casting mold for producing a lightweight aluminum subframe with an accessory according to claim 1, characterized in that: A left core puller (19) is installed on the left side between the upper mold (1) and the lower mold (2), and a right core puller (20) is installed on the right side between the upper mold (1) and the lower mold (2). The middle expansion channel (12) is located on the upper side of the left core puller (19) or the right core puller (20) and is connected to the frame mold cavity (14) through several branch channels.

3. The low pressure casting mold for producing the lightweight aluminum subframe with accessories according to claim 1, characterized in that: Riser structures (15) are provided at the four corners of the frame mold cavity (14). The rear expansion channel (11) is connected to the two riser structures (15) located at the rear. The front expansion channel (13) is connected to the two riser structures (15) located at the front.

4. The low pressure casting mold for producing the lightweight aluminum subframe with accessories according to claim 1, characterized in that: The upper mold (1) and lower mold (2) are equipped with a plurality of molding inserts (9) that are inserted into the frame mold cavity (14). The molding inserts (9) are equipped with ejector pin structures (10), which extend out of the upper end face of the upper mold (1) or the lower end face of the lower mold (2).

5. The low pressure casting mold for producing the lightweight aluminum subframe with accessories according to claim 1, characterized in that: The lower mold (2) has an upwardly protruding embedded step (21) at both the front and rear of its upper end.

6. The low pressure casting mold for producing the lightweight aluminum subframe with accessories according to claim 1, characterized in that: The upper surface of the lower mold (2) is embedded with a casting sand core (18) corresponding to the frame mold cavity (14).

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