Aluminum shell die-casting mold for vehicle

Abstract

The utility model relates to die casting mould technical field, especially a kind of vehicle aluminium shell die casting mould, including main mould, forming die, first driving device and second driving device, main mould includes upper die holder and lower die holder, and upper die holder and lower die holder are closed to form forming cavity, forming die is set in forming cavity, and forming die is by first fixed die holder, second fixed die holder, third fixed die holder, first movable die holder and second movable die holder, first fixed die holder is closed with second fixed die holder and third fixed die holder, and forms die casting cavity between each other, and the first direction of die casting cavity is provided with first movable slot, and the second direction is provided with second movable slot, and second movable die holder is set in second movable slot, and first movable die holder is set in first movable slot.The utility model effectively reduces the blowhole, shrinkage and other defects in the interior of aluminium shell, improves the internal quality and mechanical properties of aluminium shell.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, and in particular to a die-casting mold for automotive aluminum shells. Background Technology

[0002] In aluminum die-casting molds, some current mold structures lack sufficient stability. This is mainly manifested in the mold's tendency to deform or shift during the die-casting process due to structural design flaws or improper material selection. The high pressure and high speed of molten metal impact during die-casting further damages the already unstable mold structure, making it impossible to accurately maintain the intended shape. This lack of stability directly reduces the quality of the aluminum shell. Due to the instability of the mold structure, dimensional deviations are prone to occur during molding, failing to meet high-precision design requirements. This can lead to defects such as flow marks and porosity on the aluminum shell surface, severely affecting its appearance and mechanical properties. Utility Model Content

[0003] To address the aforementioned issues, this invention provides an automotive aluminum shell die-casting mold that allows for better control of the aluminum melt filling and forming during the die-casting process, effectively reducing defects such as porosity and shrinkage inside the aluminum shell, and improving the internal quality and mechanical properties of the aluminum shell.

[0004] The technical solution adopted by this utility model is: a die-casting mold for automotive aluminum shells, including a main mold, a forming mold, a first driving device, and a second driving device. The main mold includes an upper mold base and a lower mold base, which are mated to form a forming cavity. The forming mold is disposed in the forming cavity. The forming mold consists of a first fixed mold base, a second fixed mold base, a third fixed mold base, a first movable mold base, and a second movable mold base. The first fixed mold base is mated and connected to the second fixed mold base and the third fixed mold base, forming a die-casting cavity between them. The die-casting cavity has a first movable groove in a first direction and a second movable groove in a second direction. The second movable mold base is disposed in the second movable groove, and the first movable mold base is disposed in the first movable groove. The first driving device is drivenly connected to the first movable mold base, and the second driving device is drivenly connected to the second movable mold base.

[0005] A further improvement to the above solution is that the lower mold base is provided with a movable pin plate, the movable pin plate is provided with a plurality of movable ejector pins, one end of the movable ejector pins extends to the die casting cavity, the lower mold base is provided with a base, the base is provided with a movable pin plate groove, and the movable pin plate is located in the movable position.

[0006] A further improvement to the above scheme is that the first fixed mold base is disposed on the upper mold base, and the second and third fixed mold bases are both disposed on the lower mold base.

[0007] A further improvement to the above scheme is that the second movable groove is disposed on one side of the second fixed mold base, and one end of the second movable groove extends through to one side of the main mold.

[0008] A further improvement to the above scheme is that the first fixed mold base is provided with a first groove, the second fixed mold base is provided with a second groove, and the third fixed mold base is provided with a third groove, wherein the first groove is connected to the second groove and the third groove to form a second movable groove.

[0009] A further improvement to the above scheme is that the second movable mold base is provided with a shaping ejector pin, one end of which extends into the die-casting cavity.

[0010] A further improvement to the above solution is that the first driving device includes a first driving mounting frame, a first driving module, a first sliding module, a first limiting module, and a first driving link. The first driving mounting frame is disposed on one side of the main mold. The first driving module is disposed on the first driving mounting frame and is used to drive the first driving link to move. The first limiting module is used to limit the movement of the first driving link. One end of the first driving link is connected to the first sliding module. The first sliding module is connected to the first movable mold base to drive the first movable mold base to reciprocate toward the die-casting cavity.

[0011] A further improvement to the above solution is that the first sliding module includes a first sliding guide plate disposed opposite to both sides of the first driving link and a first slider disposed between the two first sliding guide plates. The first slider is slidably disposed on the first sliding guide plate, and the first movable mold base is disposed on the first slider and slides with the first slider.

[0012] A further improvement to the above solution is that the second driving device includes a second driving mounting frame, a second driving module, a second sliding module, a second limiting module, and a second driving link. The second driving mounting frame is disposed on one side of the main mold. The second driving module is disposed on the second driving mounting frame and is used to drive the second driving link to move. The second limiting module is used to limit the movement of the second driving link. One end of the second driving link is connected to the second sliding module. The second sliding module is connected to the second movable mold base to drive the second movable mold base to reciprocate toward the die-casting cavity.

[0013] A further improvement to the above solution is that the second sliding module includes a second sliding guide plate disposed opposite to both sides of the second drive link and a second slider disposed between the two second sliding guide plates. The second slider is slidably disposed on the second sliding guide plate, and the second movable mold base is disposed on the second slider and slides with the second slider.

[0014] The beneficial effects of this utility model are:

[0015] Compared to existing aluminum shell die-casting molds, this utility model's forming mold is composed of a first fixed mold base, a second fixed mold base, a third fixed mold base, a first movable mold base, and a second movable mold base, forming a die-casting cavity. This multi-mold base structure effectively improves the overall stability of the mold, ensuring precise positioning of each component during the die-casting process. Movable slots are arranged in different directions within the die-casting cavity—a first movable slot in the first direction and a second movable slot in the second direction—each adapted to the first and second movable mold bases, respectively. This layout allows for more flexible and precise movement of the movable mold bases, contributing to improved precision and dimensional stability in aluminum shell forming. A rationally configured drive device drives the first movable mold base within the first movable slot. Precise control of the drive device enables smooth and accurate movement of the first movable mold base, thereby ensuring accurate mold closing and opening actions. During the die-casting process, it allows for better control of the aluminum melt filling and forming, effectively reducing defects such as porosity and shrinkage within the aluminum shell, and improving the internal quality and mechanical properties of the aluminum shell. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the automotive aluminum shell die-casting mold of this utility model;

[0017] Figure 2 for Figure 1 Exploded view of the aluminum shell die-casting mold used by CRRC;

[0018] Figure 3 for Figure 1 An exploded view of the aluminum shell die-casting mold used by CRRC;

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the aluminum shell die-casting mold used by CRRC;

[0020] Figure 5 for Figure 1 A schematic diagram of the structure of the aluminum shell die-casting mold used by CRRC;

[0021] Figure 6 for Figure 1 An exploded view of the structure of the aluminum shell die-casting mold used by CRRC.

[0022] Explanation of reference numerals in the attached drawings: Main mold 1, Upper mold base 11, Lower mold base 12, Movable pin plate 121, Movable ejector pin 122, Base 123, Movable pin plate groove 124, Molding cavity 13, Molding mold 2, First fixed mold base 21, Second fixed mold base 22, Third fixed mold base 23, First movable mold base 24, Second movable mold base 25, Shaping ejector pin 251, Die casting cavity 26, First movable groove 261, Second movable groove 262, First driving device 3, First driving mounting frame 31, First driving module 32, First sliding module 33, First sliding guide plate 331, First slider 332, First limiting module 34, First driving link 35, Second driving device 4, Second driving mounting frame 41, Second driving module 42, Second sliding module 43, Second sliding guide plate 431, Second slider 432, Second limiting module 44, Second driving link 45. Detailed Implementation

[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] like Figures 1-6As shown, in one embodiment of this utility model, a die-casting mold for automotive aluminum shells is provided, including a main mold 1, a forming mold 2, a first driving device 3, and a second driving device 4. The main mold 1 includes an upper mold base 11 and a lower mold base 12. The upper mold base 11 and the lower mold base 12 are mated to form a forming cavity 13. The forming mold 2 is disposed in the forming cavity 13. The forming mold 2 consists of a first fixed mold base 21, a second fixed mold base 22, a third fixed mold base 23, a first movable mold base 24, and a second movable mold base 25. The first fixed mold base 21 is mated and connected to the second fixed mold base 22 and the third fixed mold base 23, forming a die-casting cavity 26 between them. The die-casting cavity 26 has a first movable groove 261 in a first direction and a second movable groove 262 in a second direction. The second movable mold base 25 is disposed in the second movable groove 262, and the first movable mold base 24 is disposed in the first movable groove 261. The first driving device 3 is drivenly connected to the first movable mold base 24, and the second driving device 4 is drivenly connected to the second movable mold base 25. In this embodiment, the forming mold 2 is composed of a first fixed mold base 21, a second fixed mold base 22, a third fixed mold base 23, a first movable mold base 24, and a second movable mold base 25, forming a die-casting cavity 26. This multi-mold base structure effectively improves the overall stability of the mold and ensures the precise positioning of each component during the die-casting process. The die-casting cavity 26 is provided with movable grooves in different directions, namely a first movable groove 261 in the first direction and a second movable groove 262 in the second direction, which are respectively adapted to the first movable mold base 24 and the second movable mold base 25. This layout makes the movement of the movable mold base more flexible and precise, which helps to improve the accuracy and dimensional stability of the aluminum shell forming. The reasonable configuration of the driving device is used to drive the first movable mold base 24 to move within the first movable groove 261. By precisely controlling the driving device, the smooth and precise movement of the first movable mold base 24 can be achieved, thereby realizing the accurate execution of mold closing and opening actions. During the die-casting process, the filling and forming of the aluminum liquid can be better controlled, effectively reducing defects such as porosity and shrinkage inside the aluminum shell, and improving the internal quality and mechanical properties of the aluminum shell.

[0027] The lower mold base 12 is equipped with a movable pin plate 121, which has multiple movable ejector pins 122. One end of each movable ejector pin 122 extends into the die-casting cavity 26. The lower mold base 12 is also equipped with a base 123, which has a pin plate movable groove 124. The movable pin plate 121 is positioned in a movable manner. In this embodiment, the arrangement of the movable pin plate 121 and multiple movable ejector pins 122 greatly improves the quality and efficiency of aluminum shell demolding. After die casting is completed, the movable ejector pins 122, driven by the movable pin plate 121, can accurately eject the formed aluminum shell from the die-casting cavity 26. Because the movable ejector pins 122 are reasonably distributed and sufficient in number, they can evenly apply ejection force to the aluminum shell, avoiding deformation or damage to the aluminum shell due to uneven local force, effectively ensuring the dimensional accuracy and appearance quality of the aluminum shell. The pin plate movable groove 124 on the base 123 provides a stable and smooth movement space for the movable pin plate 121. The movable pin plate 121 can move flexibly within this movable slot, ensuring that the movable ejector pin 122 can accurately reach the corresponding position in the die-casting cavity 26, and extend and retract in a timely manner when needed. This precise matching mechanism not only improves the operational stability of the mold, but also reduces production failures caused by poor ejection.

[0028] The first fixed mold base 21 is disposed on the upper mold base 11, and the second fixed mold base 22 and the third fixed mold base 23 are both disposed on the lower mold base 12. Specifically, the second movable groove 262 is disposed on one side of the second fixed mold base 22, and one end of the second movable groove 262 extends to one side of the main mold 1. The second movable mold base 25 is provided with a shaping ejector pin 251, one end of which extends to the die-casting cavity 26. In this embodiment, the layout of the first fixed mold base 21 disposed on the upper mold base 11 and the second fixed mold base 22 and the third fixed mold base 23 disposed on the lower mold base 12 makes the overall structure of the mold more stable and reasonable, and can effectively withstand the huge pressure generated during the die-casting process. The second movable groove 262 is disposed on one side of the second fixed mold base 22 and one end extends to one side of the main mold 1. This design provides precise guidance and sufficient space for the movement of the second movable mold base 25. During die-casting, the second movable mold base 25 can slide smoothly along the second movable groove 262, ensuring the accuracy and stability of the die-casting action. The shaping ejector pin 251, located on the second movable mold base 25, extends one end into the die-casting cavity 26 and plays a crucial role. After the molten aluminum is injected into the die-casting cavity 26 and cools, the shaping ejector pin 251 promptly ejects the formed aluminum shell, ensuring smooth demolding. During the die-casting process, the shaping ejector pin 251 provides support and shaping for the aluminum shell, preventing deformation due to internal stress or external pressure.

[0029] The first driving device 3 includes a first driving mounting frame 31, a first driving module 32, a first sliding module 33, a first limiting module 34, and a first driving link 35. The first driving mounting frame 31 is disposed on one side of the main mold 1. The first driving module 32 is disposed on the first driving mounting frame 31 and is used to drive the first driving link 35 to move. The first limiting module 34 is used to limit the movement of the first driving link 35. One end of the first driving link 35 is connected to the first sliding module 33. The first sliding module 33 is connected to the first movable mold base 24 to drive the first movable mold base 24 to reciprocate toward the die-casting cavity 26. Specifically, the first sliding module 33 includes first sliding guide plates 331 disposed opposite to both sides of the first driving link 35 and a first slider 332 disposed between the two first sliding guide plates 331. The first slider 332 is slidably disposed on the first sliding guide plates 331. The first movable mold base 24 is disposed on the first slider 332 and slides with the first slider 332. In this embodiment, the first drive module 32 is mounted on the first drive mounting bracket 31, providing precise power to the first drive linkage 35 to ensure it moves along a preset trajectory. This precise power transmission provides a stable and reliable driving force for the movement of the first movable mold base 24. The first limit module 34's design for limiting the movement of the first drive linkage 35 greatly improves the stability and safety of the entire device. It effectively avoids equipment damage or die-casting deviations caused by excessive movement of the first drive linkage 35, ensuring the accuracy and consistency of the die-casting process. The first sliding module 33, as a key component connecting the first drive linkage 35 and the first movable mold base 24, has a unique structural design that ensures the first movable mold base 24 can reciprocate smoothly and steadily toward the die-casting cavity 26. The opposing first sliding guide plate 331 provides a precise sliding track for the first slider 332, minimizing deviation during sliding and allowing the first movable mold base 24 mounted on the first slider 332 to approach or move away from the die-casting cavity 26 with extremely high precision.

[0030] The second driving device 4 includes a second driving mounting frame 41, a second driving module 42, a second sliding module 43, a second limiting module 44, and a second driving connecting rod 45. The second driving mounting frame 41 is disposed on one side of the main mold 1. The second driving module 42 is disposed on the second driving mounting frame 41 and is used to drive the second driving connecting rod 45 to move. The second limiting module 44 is used to limit the movement of the second driving connecting rod 45. One end of the second driving connecting rod 45 is connected to the second sliding module 43. The second sliding module 43 is connected to the second movable mold base 25 to drive the second movable mold base 25 to reciprocate toward the die-casting cavity 26. Specifically, the second sliding module 43 includes second sliding guide plates 431 disposed opposite to both sides of the second driving connecting rod 45 and a second slider 432 disposed between the two second sliding guide plates 431. The second slider 432 is slidably disposed on the second sliding guide plates 431. The second movable mold base 25 is disposed on the second slider 432 and slides with the second slider 432. In this embodiment, the second drive module 42 is mounted on the second drive mounting bracket 41, providing stable and precise power output to the second drive linkage 45, enabling its flexible movement. The second limiting module 44 limits the movement of the second drive linkage 45, ensuring accurate trajectory and effectively preventing mold damage or product defects caused by movement deviations. The second sliding module 43, as a key component connecting the second drive linkage 45 and the second movable mold base 25, with its corresponding second sliding guide plate 431 and the second slider 432, ensures that the second movable mold base 25, driven by the second drive linkage 45, can smoothly and steadily reciprocate towards the die-casting cavity 26. This allows the second movable mold base 25 to accurately close and open during die-casting, ensuring the forming accuracy of the aluminum shell die-casting.

[0031] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A die-casting mold for automotive aluminum shells, characterized in that: The device includes a main mold, a forming mold, a first driving device, and a second driving device. The main mold includes an upper mold base and a lower mold base, which are mated to form a forming cavity. The forming mold is disposed within the forming cavity. The forming mold consists of a first fixed mold base, a second fixed mold base, a third fixed mold base, a first movable mold base, and a second movable mold base. The first fixed mold base is mated and connected to the second and third fixed mold bases, forming a die-casting cavity between them. The die-casting cavity has a first movable groove in a first direction and a second movable groove in a second direction. The second movable mold base is disposed in the second movable groove, and the first movable mold base is disposed in the first movable groove. The first driving device is drivenly connected to the first movable mold base, and the second driving device is drivenly connected to the second movable mold base.

2. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The lower mold base is provided with a movable pin plate, the movable pin plate is provided with a plurality of movable ejector pins, one end of the movable ejector pins extends to the die casting cavity, the lower mold base is provided with a base, the base is provided with a movable pin plate groove, and the movable pin plate is located in the movable position.

3. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The first fixed mold base is disposed on the upper mold base, and the second and third fixed mold bases are both disposed on the lower mold base.

4. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The second movable groove is located on one side of the second fixed mold base, and one end of the second movable groove extends through to one side of the main mold.

5. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The first fixed mold base is provided with a first groove, the second fixed mold base is provided with a second groove, and the third fixed mold base is provided with a third groove. The first groove is connected to the second groove and the third groove to form a second movable groove.

6. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The second movable mold base is provided with a shaping ejector pin, one end of which extends into the die-casting cavity.

7. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The first driving device includes a first driving mounting frame, a first driving module, a first sliding module, a first limiting module, and a first driving link. The first driving mounting frame is disposed on one side of the main mold. The first driving module is disposed on the first driving mounting frame and is used to drive the first driving link to move. The first limiting module is used to limit the movement of the first driving link. One end of the first driving link is connected to the first sliding module. The first sliding module is connected to the first movable mold base to drive the first movable mold base to reciprocate toward the die-casting cavity.

8. The automotive aluminum shell die-casting mold according to claim 7, characterized in that: The first sliding module includes a first sliding guide plate disposed on both sides of the first driving link and a first slider disposed between the two first sliding guide plates. The first slider is slidably disposed on the first sliding guide plate, and the first movable mold base is disposed on the first slider and slides with the first slider.

9. The automotive aluminum shell die-casting mold according to claim 1, characterized in that: The second driving device includes a second driving mounting frame, a second driving module, a second sliding module, a second limiting module, and a second driving link. The second driving mounting frame is disposed on one side of the main mold. The second driving module is disposed on the second driving mounting frame and is used to drive the second driving link to move. The second limiting module is used to limit the movement of the second driving link. One end of the second driving link is connected to the second sliding module. The second sliding module is connected to the second movable mold base to drive the second movable mold base to reciprocate toward the die-casting cavity.

10. The automotive aluminum shell die-casting mold according to claim 9, characterized in that: The second sliding module includes a second sliding guide plate disposed opposite to both sides of the second drive link and a second slider disposed between the two second sliding guide plates. The second slider is slidably disposed on the second sliding guide plate, and the second movable mold base is disposed on the second slider and slides with the second slider.

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