Aluminum alloy backrest body die-casting die for electric vehicle

Abstract

This utility model belongs to the field of die-casting mold technology, and particularly relates to a die-casting mold for an aluminum alloy backrest body of an electric vehicle. The mold body includes a mold body comprising a fixed mold, a fixed mold core, a moving mold, a moving mold core, a cavity, and a side core-pulling structure. The fixed mold core is fixedly installed on the inner side of the fixed mold, and the moving mold core is fixedly installed on the inner side of the moving mold. The cavity is formed between the fixed mold core and the moving mold core after mold closing. The shape of the cavity is adapted to the outer shape of the aluminum alloy backrest body of the electric vehicle. The side core-pulling structure is disposed on the moving mold, and the position of the side core-pulling structure corresponds to the complex structural area on the side of the cavity. This utility model, by setting a side core-pulling structure, especially by using a slanted core-pulling rod in conjunction with a core-pulling block and a driving mechanism, effectively solves the demolding problem caused by the complex structure on the side of the backrest body, avoiding parts jamming, deformation, or damage, and significantly improving product molding quality and production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, and relates to a die casting mold for an aluminum alloy backrest body of an electric vehicle. Background Technology

[0002] With the rapid development of the electric vehicle industry, the requirements for lightweight and high-strength electric vehicle components are increasing. Aluminum alloys, with their advantages of lightweight, corrosion resistance, and ease of forming, are widely used in the manufacturing of electric vehicle components. The aluminum alloy backrest body is a typical example of an aluminum alloy die-cast part. The die-casting production process of the electric vehicle aluminum alloy backrest body requires the use of die-casting molds. Because the backrest body typically has complex structures such as buckles, bosses, or holes on its sides to meet installation and usage requirements, this poses a significant challenge to the demolding process. Most existing die-casting molds adopt an integral cavity structure. For backrest bodies with complex side structures, demolding can easily lead to parts jamming, deformation, or even damage, affecting product molding quality, reducing production efficiency, and making it difficult to meet mass production needs. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a die-casting mold for the aluminum alloy backrest body of an electric vehicle.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A die-casting mold for an electric vehicle aluminum alloy backrest body includes a mold body, which comprises a fixed mold, a fixed mold core, a moving mold, a moving mold core, a cavity, and a side core-pulling structure. The fixed mold core is fixedly installed on the inner side of the fixed mold, and the moving mold core is fixedly installed on the inner side of the moving mold. The cavity is formed between the fixed mold core and the moving mold core after they are closed. The shape of the cavity is adapted to the outer shape of the electric vehicle aluminum alloy backrest body. The side core-pulling structure is disposed on the moving mold, and the position of the side core-pulling structure corresponds to the complex structural area on the side of the cavity. A casting system is disposed on the other side of the moving mold. The side core-pulling structure includes a core-pulling block and a driving mechanism. The driving mechanism is pulsatorically connected to the core-pulling block and is used to drive the core-pulling block to move along the lateral direction of the cavity to realize the core-pulling action and the resetting action.

[0005] In the aforementioned die-casting mold for the aluminum alloy backrest body of an electric vehicle, the driving mechanism is an inclined core-pulling rod. The inclined core-pulling rod is set at an inclined angle on the moving mold, one end of which is connected to the core-pulling block, and the other end is located in the fixed mold.

[0006] In the above-mentioned die-casting mold for the aluminum alloy backrest body of the electric vehicle, the moving mold is provided with a core-pulling channel adapted to the core-pulling block, the core-pulling block is slidably disposed in the core-pulling channel, and one end of the core-pulling block extends into the cavity.

[0007] In the above-mentioned die-casting mold for the aluminum alloy backrest body of the electric vehicle, a guide structure is provided between the core-pulling block and the core-pulling channel. The guide structure includes a guide protrusion provided on the side wall of the core-pulling block and a guide groove opened on the inner wall of the core-pulling channel. The guide protrusion and the guide groove are slidably engaged.

[0008] In the aforementioned die-casting mold for the aluminum alloy backrest body of an electric vehicle, the core-pulling block includes a forming part and an mounting part. The forming part is fixedly mounted on the mounting part by bolts, and the forming part is located on one side of the cavity.

[0009] In the above-mentioned die-casting mold for the aluminum alloy backrest body of electric vehicle, the mold body also includes an ejection mechanism. The ejection mechanism is disposed in the moving mold and includes an ejector plate and an ejector pin. The ejector pin is fixedly installed on the ejector plate, and one end of the ejector pin can pass through the moving mold core and extend into the cavity.

[0010] In the above-mentioned die-casting mold for the aluminum alloy backrest body of the electric vehicle, there are multiple ejector pins, which are evenly distributed along the bottom of the cavity.

[0011] In the above-mentioned die-casting mold for the aluminum alloy backrest body of the electric vehicle, the casting system includes a gate and a runner. One end of the runner is connected to the gate, and the other end is located on one side of the fixed mold core and the moving mold core and is connected to the cavity.

[0012] In the above-mentioned die-casting mold for the aluminum alloy backrest body of the electric vehicle, a flow guide component is installed at the bottom of the gating system. The flow guide component is provided with an arc-shaped channel. The flow guide component is detachably installed at the connection position between the moving mold and the moving mold core. The molten aluminum alloy is injected into the cavity from the side of the fixed mold core and the moving mold core through the flow guide component.

[0013] In the aforementioned die-casting mold for the aluminum alloy backrest body of an electric vehicle, the mold body also includes a cooling system. The cooling system includes cooling water channels and a cooling medium inlet. The cooling water channels are opened in the fixed mold and the moving mold, and the cooling water channels are arranged around the cavity.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. This utility model effectively solves the demolding problem caused by the complex side structure of the backrest body by setting a side core-pulling structure, especially by using a combination of a slanted core-pulling rod, a core-pulling block, and a driving mechanism. This avoids parts jamming, deformation, or damage, and significantly improves product molding quality and production efficiency.

[0015] 2. This invention, by incorporating a flow guiding component, injects molten aluminum alloy into the mold cavity from the sides of the fixed and moving mold cores. This casting method not only reduces splashing and oxidation of the molten aluminum alloy during injection but also improves the filling and uniformity of the casting, thereby enhancing the quality of the die-cast parts. Furthermore, the detachable design of the flow guiding component facilitates mold cleaning and maintenance, reducing mold maintenance costs.

[0016] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0018] Figure 2 This is an exploded view of the present invention from another perspective.

[0019] Figure 3 This is a partial structural diagram of the moving mold core of this utility model.

[0020] Figure 4 This is a partial explosion diagram of the present invention.

[0021] Figure 5 This is a partial schematic diagram from another perspective of this utility model.

[0022] In the diagram: 1. Mold body; 2. Fixed mold; 3. Fixed mold core; 4. Moving mold; 5. Moving mold core; 6. Cavity; 7. Side core-pulling structure; 8. Core-pulling block; 9. Angled core-pulling rod; 10. Core-pulling channel; 11. Guide protrusion; 12. Guide groove; 13. Molding part; 14. Mounting part; 15. Ejector pin; 16. Ejector plate; 17. Gate; 18. Sprue; 19. Guide component; 20. Cooling water channel; 21. Channel. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-5As shown, a die-casting mold for an electric vehicle aluminum alloy backrest body includes a mold body 1. The mold body 1 includes a fixed mold 2, a fixed mold core 3, a moving mold 4, a moving mold core 5, a cavity 6, and a side core-pulling structure 7. The fixed mold core 3 is fixedly installed on the inner side of the fixed mold 2, and the moving mold core 5 is fixedly installed on the inner side of the moving mold 4. The cavity 6 is formed between the fixed mold core 3 and the moving mold core 5 after mold closing. The shape of the cavity 6 is adapted to the shape of the electric vehicle aluminum alloy backrest. The side core-pulling structure 7 is disposed on the moving mold 4, and the position of the side core-pulling structure 7 corresponds to the complex structural area on the side of the cavity 6. A casting system is provided on the other side of the moving mold 4. The side core-pulling structure 7 includes a core-pulling block 8 and a driving mechanism. The driving mechanism is connected to the core-pulling block 8 for transmission. The driving mechanism is used to drive the core-pulling block 8 to move along the lateral direction of the cavity 6 to realize the core-pulling action and the resetting action.

[0025] Furthermore, the driving mechanism is an inclined core-pulling rod 9, which is set at an inclined angle on the moving mold 4. One end of the inclined core-pulling rod 9 is connected to the core-pulling block 8, and the other end is located in the fixed mold 2.

[0026] In this embodiment, the inclined core-pulling rod 9 enables the core-pulling block 8 to achieve stable lateral core-pulling and resetting actions during the mold opening and closing process. When the mold is closed, the inclined core-pulling rod 9 drives the core-pulling block 8 to accurately reset to the side of the cavity 6, ensuring the forming accuracy of the complex structure area on the side of the aluminum alloy backrest. When the mold is opened, the inclined core-pulling rod 9 drives the core-pulling block 8 to be pulled out smoothly, avoiding damage to the already formed aluminum alloy backrest.

[0027] Furthermore, the moving mold 4 is provided with a core-pulling channel 10 that is adapted to the core-pulling block 8. The core-pulling block 8 is slidably disposed in the core-pulling channel 10, and one end of the core-pulling block 8 extends into the cavity 6.

[0028] In this embodiment, the core-pulling channel 10 provides a stable sliding track for the core-pulling block 8, ensuring that the core-pulling block 8 can move accurately in the lateral direction under the drive of the inclined core-pulling rod 9. One end of the core-pulling block 8 that extends into the cavity 6 can fit tightly with the cavity 6 during the die-casting process, thereby ensuring the complete forming of the complex structural area on the side of the aluminum alloy backrest.

[0029] Furthermore, a guide structure is provided between the core-pulling block 8 and the core-pulling channel 10. The guide structure includes a guide protrusion 11 provided on the side wall of the core-pulling block 8 and a guide groove 12 opened on the inner wall of the core-pulling channel 10. The guide protrusion 11 and the guide groove 12 are slidably engaged.

[0030] In this embodiment, the sliding engagement between the guide protrusion 11 and the guide groove 12 provides precise guidance for the sliding of the core-pulling block 8 within the core-pulling channel 10.

[0031] Furthermore, the core-pulling block 8 includes a molding part 13 and a mounting part 14. The molding part 13 is fixedly mounted on the mounting part 14 by bolts, and the molding part 13 is located on one side of the cavity 6.

[0032] In this embodiment, the core-pulling block 8 is configured as two parts: a molding part 13 and a mounting part 14. The molding part 13 is fixedly mounted on the mounting part 14 by bolts. This design facilitates the replacement and maintenance of the molding part 13.

[0033] Furthermore, the mold body 1 also includes an ejection mechanism, which is disposed in the moving mold 4. The ejection mechanism includes an ejector plate 16 and an ejector pin 15. The ejector pin 15 is fixedly installed on the ejector plate 16, and one end of the ejector pin 15 can pass through the moving mold core 5 and extend into the cavity 6.

[0034] In this embodiment, the ejector mechanism is designed so that after die casting is completed, the ejector plate 16 drives the ejector pin 15 to move, thereby smoothly ejecting the formed aluminum alloy backrest from the cavity 6.

[0035] Furthermore, there are multiple ejector pins 15, which are evenly distributed along the bottom of the cavity 6.

[0036] In this embodiment, the uniform distribution of multiple ejector pins 15 along the bottom of the cavity 6 ensures more uniform force distribution when the aluminum alloy backrest is ejected.

[0037] Furthermore, the casting system includes a gate 17 and a runner 18. One end of the runner 18 is connected to the gate 17, and the other end is located on one side of the fixed mold core 3 and the moving mold core 5 and is connected to the cavity 6.

[0038] In this embodiment, the casting system allows the molten aluminum alloy to flow smoothly from the gate 17 into the runner 18, and then precisely enter the cavity 6 through the runner 18, ensuring the filling effect of the aluminum alloy in the cavity and helping to improve the quality of die casting.

[0039] Furthermore, a flow guide component 19 is installed at the bottom of the runner 18. The flow guide component 19 is provided with an arc-shaped channel 21. The flow guide component 19 is detachably installed at the connection position between the moving mold 4 and the moving mold core 5. Molten aluminum alloy is injected into the cavity 6 from the side of the fixed mold core 3 and the moving mold core 5 through the flow guide component 19.

[0040] In this embodiment, the arc-shaped channel 21 of the flow guide component 19 can effectively guide the molten aluminum alloy to flow smoothly and steadily into the cavity 6.

[0041] Furthermore, the mold body 1 also includes a cooling system, which includes a cooling water channel 20 and a cooling medium inlet. The cooling water channel 20 is opened in the fixed mold 2 and the moving mold 4, and the cooling water channel 20 is arranged around the cavity 6.

[0042] In this embodiment, the cooling water channel 20 is arranged around the cavity 6, so that the cooling medium can enter the cooling water channel 20 from the cooling medium inlet and evenly surround the cavity 6, thereby rapidly and evenly cooling the aluminum alloy in the cavity 6.

[0043] The working principle of this utility model is as follows: In use, this invention first involves closing the moving mold 4 and the fixed mold 2. At this point, the fixed mold core 3 and the moving mold core 5 fit tightly together to form a cavity 6, the shape of which perfectly matches the shape of the aluminum alloy backrest of the electric vehicle. Next, the molten aluminum alloy flows into the gating system through the gate 17 and into the runner 18. Guided by the arc-shaped channel 21 of the guide component 19, it is smoothly and steadily injected into the cavity 6 from the sides of the fixed mold core 3 and the moving mold core 5, ensuring the filling effect of the aluminum alloy within the cavity. During the die-casting process, the inclined core-pulling rod 9 drives the core-pulling block 8 to accurately return to the side of the cavity 6. One end of the core-pulling block 8 extends into the cavity 6 and fits tightly with it. Simultaneously, the guide protrusion 11 slides with the guide groove 12, providing precise guidance for the sliding of the core-pulling block 8 within the core-pulling channel 10, ensuring the complete forming of the complex structural area on the side of the aluminum alloy backrest. After die casting is completed, the moving mold 4 and the fixed mold 2 open, and the inclined core-pulling rod 9 drives the core-pulling block 8 to be smoothly pulled out, avoiding damage to the formed aluminum alloy backrest. Subsequently, the ejector plate 16 of the ejection mechanism drives multiple ejector pins 15 evenly distributed along the bottom of the cavity 6 to move, smoothly ejecting the formed aluminum alloy backrest from the cavity 6. At the same time, the cooling system starts to work, and the cooling medium enters the cooling water channel 20 arranged around the cavity 6 from the cooling medium inlet, rapidly and uniformly cooling the aluminum alloy in the cavity 6, which helps to improve the quality of die casting.

[0044] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0045] Although this document frequently uses terms such as 1. mold body; 2. fixed mold; 3. fixed mold core; 4. moving mold; 5. moving mold core; 6. cavity; 7. side core-pulling structure; 8. core-pulling block; 9. angled core-pulling rod; 10. core-pulling channel; 11. guide protrusion; 12. guide groove; 13. molding part; 14. mounting part; 15. ejector pin; 16. ejector plate; 17. gate; 18. sprue; 19. flow guiding component; 20. cooling water channel; 21. channel, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A die-casting mold for an aluminum alloy backrest body of an electric vehicle, comprising a mold body (1), characterized in that, The mold body (1) includes a fixed mold (2), a fixed mold core (3), a moving mold (4), a moving mold core (5), a cavity (6), and a side core-pulling structure (7). The fixed mold core (3) is fixedly installed on the inner side of the fixed mold (2), and the moving mold core (5) is fixedly installed on the inner side of the moving mold (4). The cavity (6) is formed between the fixed mold core (3) and the moving mold core (5) after they are closed. The shape of the cavity (6) is adapted to the shape of the aluminum alloy backrest of the electric vehicle. The core-pulling structure (7) is provided on the moving mold (4), and the position of the side core-pulling structure (7) corresponds to the complex structure area on the side of the cavity (6). A casting system is provided on the other side of the moving mold (4). The side core-pulling structure (7) includes a core-pulling block (8) and a driving mechanism. The driving mechanism is connected to the core-pulling block (8) in a transmission manner. The driving mechanism is used to drive the core-pulling block (8) to move along the lateral direction of the cavity (6) to realize the core-pulling action and the reset action.

2. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 1, characterized in that, The driving mechanism is a slanted core-pulling rod (9), which is set at an inclined angle on the moving mold (4). One end of the slanted core-pulling rod (9) is connected to the core-pulling block (8), and the other end is located in the fixed mold (2).

3. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 2, characterized in that, The moving mold (4) has a core-pulling channel (10) adapted to the core-pulling block (8). The core-pulling block (8) is slidably disposed in the core-pulling channel (10), and one end of the core-pulling block (8) extends into the cavity (6).

4. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 3, characterized in that, A guide structure is provided between the core-pulling block (8) and the core-pulling channel (10). The guide structure includes a guide protrusion (11) provided on the side wall of the core-pulling block (8) and a guide groove (12) opened on the inner wall of the core-pulling channel (10). The guide protrusion (11) and the guide groove (12) are slidably engaged.

5. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 4, characterized in that, The core-pulling block (8) includes a molding part (13) and a mounting part (14). The molding part (13) is fixedly mounted on the mounting part (14) by bolts. The molding part (13) is located on one side of the cavity (6).

6. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 5, characterized in that, The mold body (1) also includes an ejection mechanism, which is located in the moving mold (4). The ejection mechanism includes an ejector plate (16) and an ejector pin (15). The ejector pin (15) is fixedly installed on the ejector plate (16), and one end of the ejector pin (15) can pass through the moving mold core (5) and extend into the cavity (6).

7. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 6, characterized in that, The number of ejector pins (15) is multiple, and the multiple ejector pins (15) are evenly distributed along the bottom of the cavity (6).

8. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 7, characterized in that, The casting system includes a gate (17) and a runner (18). One end of the runner (18) is connected to the gate (17), and the other end is located on one side of the fixed mold core (3) and the moving mold core (5) and is connected to the cavity (6).

9. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 8, characterized in that, The bottom of the sprue (18) is equipped with a flow guide (19), and the flow guide (19) is provided with an arc-shaped channel (21). The flow guide (19) is detachably installed at the connection position between the moving mold (4) and the moving mold core (5). The molten aluminum alloy is injected into the cavity (6) from the side of the fixed mold core (3) and the moving mold core (5) through the flow guide (19).

10. The die-casting mold for the aluminum alloy backrest body of an electric vehicle according to claim 9, characterized in that, The mold body (1) also includes a cooling system, which includes a cooling water channel (20) and a cooling medium inlet. The cooling water channel (20) is opened in the fixed mold (2) and the moving mold (4), and the cooling water channel (20) is arranged around the cavity (6).

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