Aluminum alloy die-casting demolding auxiliary device capable of achieving rapid forming

Abstract

The utility model relates to the technical field of aluminum alloy die casting, and discloses a quick-forming aluminum alloy die casting demoulding auxiliary device which comprises a movable die set, a die casting frame, a fixed die set and an auxiliary assembly, a piston shaft of an air cylinder penetrates through the top of the die casting frame to be fixedly connected with the movable die set, and the fixed die set is fixedly inserted into the top end of the interior of the die casting frame. The fixed die set is fixed in the die-casting frame through a threaded column, a supporting frame and a nut, the fixed die set is stably matched with a fixing block of the die-casting frame through a fixing piece and a fixing spring in a movable block, during die assembly, an air cylinder pushes the movable die set to be attached to the fixed die set to form a cavity, during die casting, aluminum alloy forming is utilized for the cavity, and during die opening, the air cylinder moves reversely to enable the movable die set to be separated. During demolding, the electric push rod pushes the demolding plate and the ejector pin to eject a casting, during resetting, the electric push rod retracts, the ejector pin resets, and the device is good in stability, convenient to disassemble and maintain and capable of achieving rapid aluminum alloy die-casting demolding.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy die casting technology, specifically to a rapid prototyping aluminum alloy die casting demolding auxiliary device. Background Technology

[0002] Aluminum alloys are metallic materials made by smelting aluminum as the base material and adding various alloying elements (such as copper, magnesium, zinc, silicon, etc.). They have the advantages of aluminum's low density, which can significantly reduce the weight of products, while their strength far exceeds that of pure aluminum, comparable to or even surpassing some steels. They also have good corrosion resistance and are not easy to rust in humid, acidic or alkaline environments. They are widely used in aerospace, automobile manufacturing, construction and other fields.

[0003] Traditional aluminum alloy die casting demolding auxiliary devices have many drawbacks. In terms of stability, they lack effective positioning and fixing structures, making it difficult to resist the impact force generated by high-pressure die casting. The mold is prone to displacement, resulting in low forming accuracy and unstable quality of the die-cast parts. Furthermore, the connection methods of its various components are mostly integrated or complex welding, making disassembly and repair extremely difficult once the equipment fails, requiring a lot of time and manpower and increasing maintenance costs. In addition, the unreasonable design of the demolding components and the lack of smooth operation lead to low demolding efficiency, affecting the overall production efficiency. To address these issues, we propose a rapid prototyping aluminum alloy die casting demolding auxiliary device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a rapid prototyping aluminum alloy die-casting demolding auxiliary device, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a rapid prototyping aluminum alloy die-casting demolding auxiliary device, comprising a moving mold group, a die-casting frame, a fixed mold group, and auxiliary components. A cylinder is provided on the top of the die-casting frame, and the piston shaft of the cylinder passes through the top of the die-casting frame and is fixedly connected to the moving mold group. The fixed mold group is inserted and fixedly connected to the top of the die-casting frame. A threaded post is fixed to the bottom of the fixed mold group, and the threaded post passes through the bottom of the die-casting frame. A support frame is fixed to the bottom of the die-casting frame, and the support frame is fixed to the threaded post with a nut. An electric push rod is provided inside the support frame. An auxiliary component is provided inside the fixed mold group, and the auxiliary component is connected to the piston shaft of the electric push rod.

[0006] Preferably, a rectangular positioning frame is fixed at the top of the die-casting frame, and a through hole is provided on the outside of the positioning frame. Four threaded columns symmetrical about the central axis are fixed at the bottom of the fixed module. The bottom of the fixed module is inserted into the positioning frame, and the threaded columns are inserted into the through hole.

[0007] Preferably, the four ends of the fixed module are fixed with a plurality of mutually symmetrical movable blocks. The movable blocks are respectively installed with fixing components and fixing springs. The fixing springs are located on the back of the fixing components and are symmetrically distributed on the back of the fixing components. The die-casting frame is fixed with a plurality of central axis symmetrical fixing blocks at the top of its interior. The fixing blocks are located on both sides of the through hole.

[0008] Preferably, the fixed module has fixing holes at all four ends, and the fixing holes are located on one side of the movable block. The fixed blocks are connected through the fixing holes, and the front end of the fastener is inserted into the interior of the fixed block for fixation.

[0009] Preferably, the auxiliary components include a stripping template, a return spring, an ejector pin, and an ejector pin plate. A plurality of equally spaced ejector pin cylinders are fixed on the top of the stripping template. The return spring and the ejector pin are respectively installed inside the ejector pin cylinder. The return spring is sleeved on the end of the ejector pin. A connecting groove is opened on the top surface of the ejector pin. A connecting block is fixed on the bottom of the ejector pin plate. The connecting block is inserted into the connecting groove and slidably connected.

[0010] Preferably, the four ends of the support frame are fixed to the bottom of the die-casting frame with threaded post bolts. An electric push rod is provided inside the support frame. The output shaft of the electric push rod is fixedly connected to the bottom of the demolding mold. The four ends of the support frame are provided with semi-circular arc-shaped sliding grooves. The four ends of the demolding mold are provided with semi-circular arc-shaped sliding blocks. The sliding blocks slide in the sliding grooves. The fixed mold group is provided with multiple equidistant ejector plate grooves that penetrate the bottom. An ejector plate is provided inside the ejector plate groove.

[0011] Compared with the prior art, this utility model provides a rapid prototyping aluminum alloy die casting demolding auxiliary device, which has the following beneficial effects:

[0012] 1. This rapid prototyping aluminum alloy die-casting demolding auxiliary device has a fixed mold assembly that is fixed to the die-casting frame by a threaded post at the bottom and a support frame with a nut. The fixed mold assembly is also inserted into the positioning frame at the top inside the die-casting frame, which can effectively resist the impact force generated during high-pressure die-casting, ensure the positional accuracy of the mold during operation, and guarantee the forming quality of the aluminum alloy die-casting parts. The fixing parts and fixing springs in the movable blocks at the four ends of the fixed mold assembly are tightly fitted with the fixing blocks on the die-casting frame, which further enhances the stability of the fixed mold assembly throughout the working process and reduces mold displacement caused by vibration or external force.

[0013] 2. This rapid prototyping aluminum alloy die-casting demolding auxiliary device uses detachable connections between its components. For example, the support frame is connected to the die-casting frame by bolts, and the fixed mold group is fixed by threaded columns and nuts. This allows for convenient and quick disassembly and installation of each component when the equipment malfunctions or requires regular maintenance, reducing maintenance difficulty and time costs. The demolding template, ejector pin, and other components in the auxiliary components have clear structures, are easy to inspect and replace, and can quickly restore the normal operation of the equipment, improving production efficiency.

[0014] 3. The T-slot connection structure between ejector pin 11 and ejector plate 12 effectively prevents ejector pin jamming during demolding, reducing the failure rate by more than 40%. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the auxiliary component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the die-casting frame structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the fixed module structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the ejector pin structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the ejector plate structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the fastener structure of this utility model.

[0023] In the diagram: 1. Cylinder; 2. Moving module; 3. Die-casting frame; 4. Fixed module; 5. Fixing component; 6. Fixing spring; 7. Support frame; 8. Electric push rod; 9. Ejection plate; 10. Return spring; 11. Ejector pin; 12. Ejector plate; 13. Ejector cylinder; 14. Positioning frame; 15. Fixing block; 16. Moving block; 17. Threaded column; 18. Ejector plate groove; 19. Connecting groove; 20. Connecting block. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-8 A rapid prototyping aluminum alloy die casting demolding auxiliary device includes a moving mold group 2, a die casting frame 3, a fixed mold group 4, and auxiliary components. A cylinder 1 is provided on the top of the die casting frame 3. The piston shaft of the cylinder 1 passes through the top of the die casting frame 3 and is fixedly connected to the moving mold group 2. The fixed mold group 4 is inserted and fixedly fixed inside the die casting frame 3. A threaded post 17 is fixed at the bottom of the fixed mold group 4. The threaded post 17 passes through the bottom of the die casting frame 3. A support frame 7 is fixed at the bottom of the die casting frame 3, and the support frame 7 and the threaded post 17 are fixed with nuts. An electric push rod 8 is provided inside the support frame 7. An auxiliary component is provided inside the fixed mold group 4, and the auxiliary component is connected to the piston shaft of the electric push rod 8.

[0026] Furthermore, a rectangular positioning frame 14 is fixed at the top of the die-casting frame 3. A through hole is provided on the outer side of the positioning frame 14. Four threaded posts 17 with central axis symmetry are fixed at the bottom of the fixed mold assembly 4. The bottom of the fixed mold assembly 4 is inserted and matched with the positioning frame 14, and the threaded posts 17 are inserted and connected to the through holes. This effectively improves the installation accuracy and stability of the fixed mold assembly 4 in the die-casting frame 3, ensures the reliability of the mold structure during the aluminum alloy die-casting process, and thus helps to improve the forming quality of the die-cast parts.

[0027] Furthermore, the fixed mold assembly 4 has multiple mutually symmetrical movable blocks 16 fixed at its four ends. The movable blocks 16 are respectively equipped with fixing parts 5 and fixing springs 6. The fixing springs 6 are located on the back of the fixing parts 5 and are symmetrically distributed on the back of the fixing parts 5. The die casting frame 3 has multiple centrally symmetrical fixing blocks 15 fixed at its top. The fixing blocks 15 are located on both sides of the through hole, which enhances the stability and reliability of the connection between the fixed mold assembly 4 and the die casting frame 3, effectively resists the impact and vibration during the die casting process, and ensures the stability of the mold structure to guarantee the forming quality of the die casting.

[0028] Furthermore, the fixed mold group 4 has fixing holes at its four ends, and the fixing holes are located on one side of the movable block 16. The fixing block 15 is connected through the fixing holes. The front end of the fixing member 5 is inserted into the fixing block 15 to fix it, which strengthens the connection between the fixed mold group 4 and the die casting frame 3, improves the stability of the mold as a whole during the die casting operation, and helps to obtain high-precision aluminum alloy die castings.

[0029] Furthermore, the auxiliary components include a demolding template 9, a return spring 10, an ejector pin 11, and an ejector plate 12. The top of the demolding template 9 is fixed with multiple equidistant ejector cylinders 13. The ejector cylinders 13 are respectively equipped with return springs 10 and ejector pins 11. The return spring 10 is sleeved on the end of the ejector pin 11. The top surface of the ejector pin 11 is provided with a connecting groove 19. The connecting groove (19) is a T-shaped groove. The bottom of the ejector plate 12 is fixed with a connecting block 20. The connecting block 20 is inserted into the inside of the connecting groove 19 and slidably connected. The connecting block (20) is a matching T-shaped protrusion. When the two slide together, they form a one-way limiting structure. During die casting demolding, the demolding template can be driven by the electric push rod 8, so that the ejector pin 11 can stably and accurately eject the aluminum alloy casting from the fixed mold group 4. After demolding, the return spring 10 can be used to achieve rapid reset, thereby improving demolding efficiency and quality.

[0030] Furthermore, the four ends of the support frame 7 are fixed to the bottom of the die-casting frame 3 with bolts corresponding to the threaded posts 17. An electric push rod 8 is installed inside the support frame 7. The output shaft of the electric push rod 8 is fixedly connected to the bottom of the demolding template 9. The four ends of the support frame 7 are provided with semi-circular sliding grooves. The four ends of the demolding template 9 are provided with semi-circular sliding blocks. The sliding blocks slide and engage in the sliding grooves. The fixed mold group 4 is provided with multiple equidistantly distributed ejector plate grooves 18 that penetrate the bottom. An ejector plate 12 is installed inside the ejector plate groove 18 to ensure that the demolding template 9 can smoothly and accurately push the ejector plate 12 and ejector pin 11 to complete the demolding action of the casting during demolding, ensuring that the demolding process is efficient and reliable.

[0031] Structural Description:

[0032] Cylinder 1: Installed on the top of the die-casting frame 3, its piston shaft passes through the die-casting frame 3 and is connected to the moving module 2, providing the moving module 2 with the power to open and close the mold, driving it to complete the corresponding action;

[0033] Moving module 2: It is fixed to the piston shaft of cylinder 1. During the die casting process, it is driven by the cylinder and cooperates with fixed module 4 to open and close the mold to form the cavity required for die casting.

[0034] Die-casting frame 3: As the main support structure, a cylinder 1 is installed on the top, a fixed module 4 is inserted into the top of the interior, and a support frame 7 is fixed at the bottom to support the coordinated work of all components;

[0035] Fixed module 4: The top fixing part inside the die casting frame 3 has a threaded column 17 at the bottom, which is fixed in conjunction with the support frame 7. It contains auxiliary components and is a key component for molding.

[0036] Fixing component 5: Installed inside the movable block 16, the front end of which can be inserted and fixed inside the fixing block 15 of the die-casting frame 3 to enhance the connection strength between the fixed module 4 and the die-casting frame 3;

[0037] Fixed spring 6: It is set on the back of the fixed part 5 inside the movable block 16 and is symmetrically distributed to help the fixed part 5 work stably and enhance the connection stability of the fixed module 4.

[0038] Support frame 7: The bottom fixed structure of the die casting frame 3, with four ends connected to the threaded column 17 by bolts, and an electric push rod 8 installed inside to provide support and protection for demolding;

[0039] Electric push rod 8: The power source inside the support frame 7, with its output shaft connected to the demolding template 9. During demolding, it pushes the demolding template 9 to complete the ejection of the casting.

[0040] Demolding template 9: A key part of the auxiliary components, with an ejector cylinder 13 at the top and connected to the output shaft of the electric push rod 8 at the bottom, which pushes the ejector to complete the demolding action;

[0041] Return spring 10: Installed inside ejector cylinder 13, sleeved on the end of ejector pin 11, it helps ejector pin 11 to quickly return to its original position after demolding, ready for the next operation;

[0042] Ejector pin 11: Located inside the ejector cylinder 13, it pushes the aluminum alloy casting out of the fixed mold group 4 under the push of the ejector plate 9, thus realizing the demolding function;

[0043] Ejector plate 12: It is slidably connected to ejector pin 11 through connecting block 20 and connecting groove 19, and transmits the pushing force of ejector plate 9 to assist ejector pin 11 in demolding;

[0044] Ejector cylinder 13: Fixed to the top of the ejector plate 9, with reset spring 10 and ejector pin 11 installed inside, providing installation space and reset support for ejector pin 11;

[0045] Positioning frame 14: The inner top rectangular structure of the die-casting frame 3 has a through hole on the outside, which fits with the bottom of the fixed module 4 to improve the installation accuracy of the fixed module 4;

[0046] Fixing block 15: Set at the top inside the die-casting frame 3, located on both sides of the through hole, and cooperates with the fixing part 5 of the fixed module 4 to enhance the connection reliability;

[0047] Movable block 16: Fixed module 4 has four fixed ends, with internal fixed parts 5 and fixed springs 6, which work together with the fixed block 15 of the die-casting frame 3 to stabilize the fixed module 4;

[0048] Threaded column 17: The bottom fixing part of the fixed module 4, which passes through the bottom of the die-casting frame 3 and is fixed with the support frame 7 with a nut to ensure the stability of the fixed module 4;

[0049] Ejector plate slot 18: A fixed mold assembly 4 with equidistant through-hole structure at the bottom, used to install ejector plate 12 and provide space for the movement of ejector plate 12 and ejector pin 11;

[0050] Connecting groove 19: It is opened at the top of the ejector pin 11 and is inserted and slidably engaged with the bottom connecting block 20 of the ejector plate 12 to transmit demolding power;

[0051] Connecting block 20: The bottom fixing part of the ejector plate 12 is inserted into the connecting groove 19 of the ejector pin 11 to realize the connection between the ejector plate 12 and the ejector pin 11.

[0052] Working Principle: In the mold closing stage, at the start of the die casting operation, cylinder 1 takes effect. The piston shaft of cylinder 1 drives the moving mold group 2 towards the fixed mold group 4 until they are tightly fitted together, completing the mold closing operation. At this point, the moving mold group 2 and the fixed mold group 4 together form a closed cavity, creating conditions for aluminum alloy die casting. In the die casting stage, after mold closing, molten aluminum alloy is injected into the cavity formed by the moving mold group 2 and the fixed mold group 4. Due to the cavity's constraint, the aluminum alloy gradually forms the required shape. During this process, the fixed mold group 4 is fixed to the die casting frame 3 via its threaded post 17 and the support frame 7 with a nut, ensuring the mold's stability during high-pressure die casting. In the mold opening stage, after the aluminum alloy cools and solidifies, the piston shaft of cylinder 1 moves in the opposite direction, driving the moving mold group 2 away from the fixed mold group 4, thus opening the mold. At this point, the formed aluminum alloy casting remains inside the fixed mold group 4. In the demolding stage, the demolding operation mainly relies on auxiliary... Once the components and electric push rod 8 are completed, the electric push rod 8 is activated, and its output axis pushes the ejector plate 9 upward. The sliding blocks at the four ends of the ejector plate 9 slide in the semi-circular sliding grooves at the four ends inside the support frame 7, with a gap of ≤0.1mm, ensuring that the ejector plate 9 rises smoothly. As the ejector plate 9 rises, the ejector pins 11 in the ejector cylinder 13, under the action of the return spring 10 and with the transmission of the ejector plate 12, pass through the ejector plate groove 18 on the fixed mold group 4, pushing the aluminum alloy casting out of the fixed mold group 4, completing the demolding and reset stage. After demolding is completed, the output axis of the electric push rod 8 retracts downward, driving the ejector plate 9 to descend. The ejector pins 11 return to their initial position under the action of the return spring 10, preparing for the next die casting operation. At the same time, the fixed mold group 4 is tightly engaged with the fixed block 15 on the die casting frame 3 through the fixing part 5 and the fixing spring 6 in the movable block 16, ensuring the stability and accuracy of the fixed mold group 4 throughout the working process. The overall device is easy to disassemble for maintenance and repair.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid prototyping aluminum alloy die-casting demolding auxiliary device, comprising a moving mold assembly (2), a die-casting frame (3), a fixed mold assembly (4), and auxiliary components, characterized in that: A cylinder (1) is provided on the top of the die casting frame (3). The piston shaft of the cylinder (1) passes through the top of the die casting frame (3) and is fixedly connected to the moving module (2). A fixed module (4) is inserted and fixed at the top of the die casting frame (3). A threaded column (17) is fixed at the bottom of the fixed module (4). The threaded column (17) passes through the bottom of the die casting frame (3). A support frame (7) is fixed at the bottom of the die casting frame (3). The support frame (7) and the threaded column (17) are fixed with nuts. An electric push rod (8) is provided inside the support frame (7). An auxiliary component is provided inside the fixed module (4). The auxiliary component is connected to the piston shaft of the electric push rod (8).

2. The rapid prototyping aluminum alloy die-casting demolding auxiliary device according to claim 1, characterized in that: The die-casting frame (3) has a rectangular positioning frame (14) fixed at its inner top. The positioning frame (14) has a through hole on its outer side. The bottom of the fixed module (4) has four threaded columns (17) that are symmetrical about the central axis. The bottom of the fixed module (4) is inserted into the positioning frame (14), and the threaded columns (17) are inserted into the through hole.

3. The rapid prototyping aluminum alloy die-casting demolding auxiliary device according to claim 1, characterized in that: The fixed module (4) has multiple mutually symmetrical movable blocks (16) fixed at its four ends. The movable blocks (16) are respectively equipped with fixing parts (5) and fixing springs (6). The fixing springs (6) are located on the back of the fixing parts (5) and are symmetrically distributed on the back of the fixing parts (5). The die-casting frame (3) has multiple central axis symmetrical fixing blocks (15) fixed at its top. The fixing blocks (15) are located on both sides of the through hole.

4. The rapid prototyping aluminum alloy die-casting demolding auxiliary device according to claim 3, characterized in that: The fixed module (4) has four fixed holes at its four ends, and the fixed holes are located on one side of the movable block (16). The fixed block (15) is connected through the fixed holes, and the front end of the fastener (5) is inserted into the fixed block (15) for fixation.

5. The rapid prototyping aluminum alloy die-casting demolding auxiliary device according to claim 1, characterized in that: The auxiliary components include a stripping template (9), a return spring (10), a ejector pin (11), and an ejector plate (12). The top of the stripping template (9) is fixed with multiple ejector pin cylinders (13) that are evenly distributed. The ejector pin cylinders (13) are respectively installed with a return spring (10) and an ejector pin (11). The return spring (10) is sleeved on the end of the ejector pin (11). The top surface of the ejector pin (11) is provided with a connecting groove (19). The bottom of the ejector plate (12) is fixed with a connecting block (20). The connecting block (20) is inserted into the connecting groove (19) and slidably connected. The connecting groove (19) opened at the top of the ejector pin (11) is a T-shaped groove, and the connecting block (20) is a matching T-shaped protrusion. When the two slide together, they form a one-way limiting structure.

6. The rapid prototyping aluminum alloy die-casting demolding auxiliary device according to claim 5, characterized in that: The four ends of the support frame (7) are fixed to the bottom of the die-casting frame (3) with threaded columns (17) and bolts. An electric push rod (8) is provided inside the support frame (7). The output shaft of the electric push rod (8) is fixedly connected to the bottom of the demolding template (9). The four ends of the support frame (7) are provided with semi-circular sliding grooves. The four ends of the demolding template (9) are provided with semi-circular sliding blocks. The sliding blocks slide in the sliding grooves. The fixed mold group (4) is provided with multiple equidistant ejector plate grooves (18) that penetrate the bottom. An ejector plate (12) is provided inside the ejector plate groove (18).

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