A semi-solid aluminum alloy die-casting composite feeding device

Abstract

The application discloses a kind of semi-solid aluminum alloy die-casting composite feeding device, it is related to the field of die-casting machine feeding device, including feeding device, injection chamber and push rod, the injection chamber outside is equipped with fixed shell, and fixed shell inner wall is equipped with storage cavity.The application can continuously stir semi-solid molten metal throughout the process by the cooperation of storage cavity and rotatable lifting stirring blade structure, effectively suppresses the stratification and specific gravity segregation problem of metal raw materials due to the difference in component proportion, keeps the internal composition of molten metal uniform and consistent at all times, avoids the drawbacks of traditional mechanical watch layer material taking, stabilizes the internal structure of casting, significantly improves the overall forming quality of product, the temperature control of heat supplement pipe and heat preservation layer outside storage cavity, the heat insulation shell outside feeding pipe and the high-temperature steam waste heat reuse structure of storage cavity are matched, realize the closed conveying of molten metal and whole process heat preservation, substantially reduce the heat loss in the process of material conveying and storage, reduce the heat supplement energy consumption.

Description

Technical Field

[0001] This invention relates to the field of feeding devices for die casting machines, specifically a composite feeding device for semi-solid aluminum alloy die casting. Background Technology

[0002] In the fields of automotive parts and precision hardware manufacturing, die casting machines can inject molten metal into a mold under pressure to cool and solidify. After the mold is opened, solid metal castings can be obtained. Among them, semi-solid aluminum alloy die casting has gradually replaced the traditional liquid die casting process and become the mainstream process for mass production of high-end aluminum alloy components due to its advantages such as low forming temperature, good casting density, and excellent mechanical properties.

[0003] Existing semi-solid die casting machines mainly rely on heating furnaces to melt raw materials, and then use robotic arms to scoop them into the injection chamber to complete the material feeding and conveying. This can realize the basic functions of melting and transferring aluminum alloy raw materials and feeding materials for die casting, and meet the basic usage requirements of batch die casting production of conventional aluminum alloy castings. This device is also the most widely used material feeding equipment in the semi-solid die casting industry.

[0004] However, when metal raw materials are smelted at high temperatures in a heating furnace for a long time, the difference in the specific gravity of the internal components makes it easy for the components to separate into layers and sink or float due to gravity segregation. The robotic arm can only pick up the material from the surface of the molten metal without the intervention of the internal mixing structure, which causes the proportion of material components fed into the injection chamber to be unbalanced. This seriously affects the uniformity of the internal structure and the molding quality of the casting. At the same time, the material is exposed to the air throughout the process, resulting in a large amount of heat loss and high production energy consumption, which further exacerbates the problem of unstable casting quality. Therefore, a composite feeding device for semi-solid aluminum alloy die casting is proposed. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a composite feeding device for semi-solid aluminum alloy die casting to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a composite feeding device for semi-solid aluminum alloy die casting, comprising a feeding device, an injection chamber, and a pusher rod. The injection chamber is provided with a fixed outer shell, and a storage cavity is formed on the inner wall of the fixed outer shell. The bottom of the storage cavity is provided with a discharge valve that connects to the inlet of the injection chamber, and a stirring blade is provided inside the storage cavity for real-time stirring of the molten metal inside the storage cavity. A heat insulation layer is provided between the storage cavity and the fixed outer shell, and a heat replenishing pipe is provided inside the heat insulation layer. A cover plate is provided on the top of the storage cavity, and a motor is fixedly installed on the top of the cover plate. A drive structure is fixedly installed on the bottom of the motor for driving the stirring blade to rotate and move up and down inside the storage cavity.

[0007] By adopting the above technical solution, a sealed storage chamber with stirring function is integrated on the outside of the injection chamber. The motor and drive structure drive the stirring blades to achieve rotation, lifting and mixing, which effectively avoids the specific gravity segregation of molten metal and ensures that the material composition is uniform and stable. At the same time, the insulation layer and the heat supply pipe work together to keep the temperature and maintain the temperature. Combined with the overall sealed chamber layout, the heat loss during the material transportation and storage process is greatly reduced, and energy waste is reduced.

[0008] Furthermore, the drive structure includes a drive rod, a fixed rod, and a lifting frame, wherein the top end of the drive rod is fixedly connected to the output shaft of the motor, and the outer wall of the drive rod is rotatably mounted on the inner wall of the fixed rod. The lifting frame is slidably mounted between the drive rod and the fixed rod, and a rotating shaft is fixedly mounted on the top of the stirring blade. The stirring blade is fixedly mounted on the bottom end of the lifting frame through the rotating shaft.

[0009] By adopting the above technical solution, the integrated transmission layout of the drive rod, fixed rod and lifting frame can realize the combined rotation and lifting motion of the stirring blades by relying on the power output of the motor. The combined motion effect can be achieved without the need to add multiple sets of drive sources, thereby reducing the manufacturing cost and control complexity of the equipment.

[0010] Furthermore, a limit block is fixedly installed at the bottom of the drive rod, and a limit groove adapted to the limit block is provided on the lifting frame. The limit block is slidably installed in the limit groove to realize that the drive rod drives the lifting frame to rotate synchronously.

[0011] By adopting the above technical solution, the fitting and sliding cooperation between the limiting block and the limiting groove can stably transmit the rotational power of the drive rod to the lifting frame, and slippage or disengagement is not likely to occur during operation.

[0012] Furthermore, a guide column is fixedly installed on one side of the bottom of the lifting frame, and an annular guide groove adapted to the guide column is opened on the inner wall of the fixed rod. The guide column is slidably installed in the guide groove to guide the lifting frame to achieve reciprocating lifting when it rotates.

[0013] By adopting the above technical solution, and utilizing the sliding cooperation between the guide column and the annular guide groove, there is no need to add additional lifting drive components. The lifting frame can be automatically guided to complete the reciprocating lifting action during the rotation process simply by relying on the rotational motion.

[0014] Furthermore, the stirring blades are designed to be inclined to the side wall of the storage chamber, and when the stirring blades are rotated and raised with the lifting frame, they can be stirred in close contact with the inner wall of the storage chamber to avoid material segregation or residue.

[0015] By adopting the above technical solution, during the rotation and lifting process, the stirring blades can effectively break up the stratification tendency of different components of molten metal, eliminate the phenomenon of specific gravity segregation, ensure the uniformity and stability of material composition, and scrape off the material adhering to the cavity wall in a timely manner.

[0016] Furthermore, a discharge valve is fixedly installed at the bottom of the storage chamber, and the discharge valve is a quantitative control valve. The discharge valve is installed between the bottom of the storage chamber and the inlet of the injection chamber to control the quantitative delivery of molten metal.

[0017] By adopting the above technical solution, the discharge valve adopts a quantitative control structure and is arranged between the storage chamber and the injection chamber inlet. The discharge flow rate and conveying volume of semi-solid molten metal can be controlled and regulated by the system to ensure that the material dosage sent into the injection chamber each time is uniform and consistent, matching the requirements of the die casting process.

[0018] Furthermore, an exhaust mechanism is fixedly installed at one end of the injection chamber near the die-casting machine, and multiple exhaust grooves are opened on the upper part of the exhaust mechanism. A limit frame is fixedly installed on the inner wall of the exhaust mechanism, and a sealing ball is movably installed on the inner wall of the exhaust mechanism. The diameter of the sealing ball corresponds to the inner diameter of the exhaust mechanism. When the push rod pushes the material, the gas in the cavity can push up the sealing ball and be discharged from the exhaust groove to prevent air from mixing into the molten metal.

[0019] By adopting the above technical solution, the self-weight unidirectional exhaust structure that combines the sealing ball with the exhaust groove can automatically complete the exhaust by relying on internal air pressure during the material pushing operation.

[0020] Furthermore, a feed pipe is fixedly installed on the top of the storage chamber for conveying semi-solid molten metal into the storage chamber, and a heat insulation shell is fitted on the outer wall of the feed pipe.

[0021] By adopting the above technical solution, the feed pipe is directly connected to the storage chamber to achieve closed feeding, which can avoid the molten metal being directly exposed to the air during the conveying process and reduce heat loss.

[0022] Furthermore, an air inlet is fixedly installed on the cover plate, and the top of the air inlet is fixedly installed at the open end of the heat insulation shell near the storage chamber. The end of the heat insulation shell away from the fixed outer shell is a closed end. The air inlet is connected to the storage chamber and the inner cavity of the heat insulation shell respectively. The high-temperature steam in the storage chamber can enter the cavity between the heat insulation shell and the feed pipe through the air inlet, so as to use the residual heat of the steam to reduce the heat dissipation of the molten metal in the feed pipe.

[0023] By adopting the above technical solution, the storage chamber and the inner cavity of the insulation shell are connected through the air inlet. The high-temperature steam generated spontaneously in the chamber can be introduced into the interlayer space between the insulation shell and the feed pipe to provide a surrounding waste heat insulation for the feed pipe. No additional heating and insulation equipment is required, and waste heat can be recovered and recycled.

[0024] In summary, the present invention has the following main beneficial effects:

[0025] This invention utilizes a storage chamber combined with a rotatable and liftable stirring blade structure to continuously stir semi-solid molten metal throughout the entire process. This effectively suppresses stratification and gravity segregation problems caused by differences in the specific gravity of the metal raw materials, ensuring that the internal composition of the molten metal remains uniform and consistent. This avoids the drawbacks of traditional mechanical watch-style material handling, stabilizes the internal structure of the casting, and significantly improves the overall molding quality of the product. The insulation layer on the outside of the storage chamber and the heat replenishment pipe work together to control the temperature. Combined with the external insulation shell of the feed pipe and the high-temperature steam waste heat reuse structure of the storage chamber, this achieves closed-loop conveying and full-process insulation of the molten metal, greatly reducing heat loss during material conveying and storage, and lowering the energy consumption for heat replenishment. At the same time, the overall closed layout replaces the open robotic arm material scooping and feeding method, reducing the leakage of flue gas and thermal radiation pollution caused by the contact between high-temperature materials and air. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the main body of the device of the present invention;

[0027] Figure 2 This is a cross-sectional structural diagram of the main body of the device of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0029] Figure 4 For the present invention Figure 2 Enlarged view of point B;

[0030] Figure 5 This is a cross-sectional view of the fixed outer shell of the present invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged view of point C;

[0032] Figure 7 This is a cross-sectional schematic diagram of the driving structure of the present invention;

[0033] Figure 8 This is a cross-sectional schematic diagram of the fixing rod of the present invention.

[0034] In the diagram: 1. Feeding device; 2. Fixed outer shell; 201. Storage chamber; 202. Insulation layer; 21. Feeding pipe; 211. Insulation shell; 212. Air inlet; 22. Cover plate; 23. Motor; 231. Drive rod; 232. Limiting block; 24. Fixing rod; 241. Guide groove; 25. Lifting frame; 251. Guide column; 252. Limiting groove; 26. Stirring blade; 261. Rotating shaft; 27. Heating pipe; 28. Discharge valve; 3. Injection chamber; 31. Exhaust mechanism; 311. Exhaust groove; 312. Sealing ball; 313. Limiting frame; 4. Push rod. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of the present invention will now be described.

[0037] A composite feeding device for semi-solid aluminum alloy die casting, such as Figure 1-8 As shown, the device includes a feeding device 1, an injection chamber 3, and a pusher rod 4. The injection chamber 3 is externally fitted with a fixed outer shell 2, and the inner wall of the fixed outer shell 2 has a storage chamber 201. The storage chamber 201 can temporarily store the fed semi-solid molten metal in a sealed manner, preventing the material from being exposed to direct contact with the outside air. The bottom of the storage chamber 201 is equipped with a discharge valve 28 that connects to the inlet of the injection chamber 3. The discharge valve 28 enables quantitative and controllable material conveying. The storage chamber 201 is internally equipped with stirring blades 26 for real-time stirring of the molten metal inside the storage chamber 201. The stirring blades 26 can agitate the material inside the chamber in all directions, suppressing stratification and segregation of different components due to differences in specific gravity. The storage chamber 201 and... An insulation layer 202 is provided between the fixed outer shell 2, and a heat replenishing pipe 27 is provided inside the insulation layer 202. The insulation layer 202 and the heat replenishing pipe 27 form an integrated constant temperature protection structure to stably maintain the process temperature required for semi-solid materials. A cover plate 22 is provided on the top of the storage cavity 201. The cover plate 22 seals the top of the storage cavity 201 to reduce heat loss. A motor 23 is fixedly installed on the top of the cover plate 22, and a drive structure is fixedly installed on the bottom of the motor 23 to drive the stirring blade 26 to rotate and move up and down inside the storage cavity 201. The drive structure can drive the stirring blade 26 to perform a combined rotation and reciprocating up and down motion, expand the stirring coverage area, and improve the uniformity of material mixing.

[0038] Please see Figure 1-8 The drive structure includes a drive rod 231, a fixed rod 24, and a lifting frame 25. The top of the drive rod 231 is fixedly connected to the output shaft of the motor 23. The operation of the motor 23 can directly drive the drive rod 231 to rotate synchronously in the circumferential direction. The outer wall of the drive rod 231 is rotatably mounted on the inner wall of the fixed rod 24. The fixed rod 24 provides radial limit and rotational support for the drive rod 231, ensuring coaxial rotation. The lifting frame 25 is slidably mounted between the drive rod 231 and the fixed rod 24. The lifting frame 25 can perform reciprocating sliding motion along the axial direction while rotating in the circumferential direction. The top of the stirring blade 26 is fixedly mounted with a rotating shaft 261, which serves as a connection and power transmission. The stirring blade 26 is fixedly mounted to the bottom of the lifting frame 25 through the rotating shaft 261. When the lifting frame 25 moves, it can synchronously drive the stirring blade 26 to complete the combined action of rotation and lifting.

[0039] Please see Figure 1-8 A limiting block 232 is fixedly installed at the bottom of the drive rod 231. The limiting block 232 rotates synchronously with the drive rod 231. The lifting frame 25 is provided with a limiting groove 252 that matches the limiting block 232. The limiting groove 252 can form a locking space for the limiting block 232. The limiting block 232 is slidably installed in the limiting groove 252 to realize that the drive rod 231 drives the lifting frame 25 to rotate synchronously. The torsional torque is transmitted by the engagement of the limiting block 232 and the limiting groove 252, thereby completing the stable transmission of power from the drive rod 231 to the lifting frame 25.

[0040] Please see Figure 1-8 A guide column 251 is fixedly installed on one side of the bottom of the lifting frame 25. The guide column 251 moves circumferentially along with the lifting frame 25. The inner wall of the fixed rod 24 is provided with an annular guide groove 241 that is adapted to the guide column 251. The annular guide groove 241 can provide a limited movement trajectory for the guide column 251. The guide column 251 is slidably installed in the guide groove 241 to guide the lifting frame 25 to achieve reciprocating lifting when it rotates. The guide column 251 moves circumferentially along the inner wall of the annular guide groove 241. With the help of trajectory constraints, the lifting frame 25 automatically completes up and down reciprocating movement during rotation.

[0041] Please see Figure 1-8 The stirring blades 26 are inclined to the side wall of the storage chamber 201. The inclined shape can fit the internal contour of the storage chamber 201 and adapt to the internal space shape of the chamber to avoid interference. When the stirring blades 26 rotate and rise with the lifting frame 25, they can fit against the inner wall of the storage chamber 201 to stir, so as to avoid material segregation or residue. The stirring blades 26 can follow the lifting frame 25 to complete the combined motion of rotation and up and down reciprocating, which can stir in all directions to make the components with different proportions evenly mixed.

[0042] Please see Figure 1-8 A discharge valve 28 is fixedly installed at the bottom of the storage chamber 201. The discharge valve 28 is a quantitative control valve. As a key opening and closing component for material discharge from the storage chamber 201, the discharge valve 28 is connected to the control system and can set the single discharge flow rate and discharge time. The discharge valve 28 is installed between the bottom of the storage chamber 201 and the inlet of the injection chamber 3 to control the quantitative conveying of molten metal, realize the sealed connection between the storage chamber 201 and the feed channel of the injection chamber 3, and send the material into the injection chamber 3 at a uniform speed and in a quantitative manner according to the die casting process requirements.

[0043] Please see Figure 1-8An exhaust mechanism 31 is fixedly installed at one end of the injection chamber 3 near the die-casting machine. The exhaust mechanism 31 is integrated into the end of the injection chamber 3 and can centrally guide and discharge internal gases. Multiple exhaust slots 311 are provided on the upper part of the exhaust mechanism 31 to improve exhaust efficiency. A limit frame 313 is fixedly installed on the inner wall of the exhaust mechanism 31. The limit frame 313 can limit and constrain the upward stroke of the sealing ball 312 to prevent the sealing ball 312 from leaving the working position. The sealing ball 312 is movably installed on the inner wall of the exhaust mechanism 31. The plugging ball 312 can move freely up and down along the axial direction inside the exhaust mechanism 31. The diameter of the plugging ball 312 corresponds to the inner diameter of the exhaust mechanism 31. When the pusher rod 4 pushes the material, the gas in the cavity can lift the plugging ball 312 and be discharged from the exhaust groove 311 to prevent air from mixing into the molten metal. Under normal conditions, the plugging ball 312 can rely on its own weight to adhere to the inner wall to achieve sealing. The air pressure generated by pushing the material can automatically lift the plugging ball 312 to achieve passive automatic exhaust and prevent air from being trapped inside the molten metal to form porosity defects.

[0044] Please see Figure 1-8 The top of the storage chamber 201 is fixedly installed with a feed pipe 21. The feed pipe 21 serves as a dedicated channel for conveying semi-solid molten metal. It can smoothly guide externally conveyed materials into the storage chamber 201 for temporary storage. It is used to convey semi-solid molten metal into the storage chamber 201. The outer wall of the feed pipe 21 is fitted with a heat insulation shell 211. The heat insulation shell 211 wraps around the outside of the feed pipe 21, forming an annular heat insulation cavity structure.

[0045] Please see Figure 1-8 An air inlet 212 is fixedly installed on the cover plate 22, and the top of the air inlet 212 is fixedly installed on the open end of the heat insulation shell 211 near the storage chamber 201. The air inlet 212 is opened on the cover plate 22 to form a through-connecting channel, so that the internal space of the storage chamber 201 can be connected to the inner cavity of the heat insulation shell 211 through the air inlet 212. The end of the heat insulation shell 211 away from the fixed outer shell 2 is a closed end, which can block the heat from dissipating outward and form a closed waste heat circulation chamber.

[0046] Please see Figure 1-8 The air inlet 212 is connected to the storage chamber 201 and the inner cavity of the heat insulation shell 211, forming a flow channel for the storage chamber 201 to deliver high-temperature steam to the heat insulation shell 211 interlayer. The high-temperature steam in the storage chamber 201 can enter the cavity between the heat insulation shell 211 and the feed pipe 21 through the air inlet 212. This is used to reduce the heat dissipation of the molten metal in the feed pipe 21 by utilizing the residual heat of the steam, so that the high-temperature steam surrounds the outer wall of the feed pipe 21 and forms a constant temperature insulation effect on the feed pipe 21 by relying on the residual heat of the steam itself.

[0047] The working principle of this invention is as follows: During operation, the feeding device 1 is located at the feeding position of the die-casting machine, which is the same as the installation position of the existing injection chamber 3. The other end of the feeding pipe 21 is installed and matched with the metal heating furnace. The semi-solid molten metal is transported to the storage chamber 201 through the feeding pipe 21. The storage chamber 201 is used to temporarily store the molten metal, avoiding the exposed transfer of traditional robotic arm feeding, reducing heat loss and environmental pollution. The cover plate 22 seals the top of the storage chamber 201 to further prevent heat leakage and flue gas leakage, and improve the sealing performance and environmental protection of the device.

[0048] After the motor 23 is started, its bottom drive structure starts to work, driving the stirring blades 26 to rotate and lift simultaneously inside the storage chamber 201.

[0049] In the drive structure, the drive rod 231 rotates synchronously with the motor 23. Through the engagement of the limit block 232 and the limit groove 252, the lifting frame 25 rotates synchronously. At the same time, the guide column 251 on the lifting frame 25 slides in the annular guide groove 241 of the fixed rod 24, guiding the lifting frame 25 to perform a smooth reciprocating lifting motion while rotating, thereby driving the stirring blade 26 connected to the bottom of the lifting frame 25 through the rotating shaft 261 to move synchronously.

[0050] The stirring blade 26 is inclined to the side wall of the storage chamber 201. When it is at its lowest position during rotation and lifting, it can fit against the inner wall of the storage chamber 201 to stir the molten metal in real time and comprehensively, breaking the stratification trend of different proportions of heavy components in the molten metal, avoiding the phenomenon of specific gravity segregation, ensuring that the molten metal composition in the storage chamber 201 is uniform, and ensuring the quality of subsequent product molding.

[0051] The insulation layer 202 between the storage chamber 201 and the fixed outer shell 2 serves to insulate the heat and reduce the heat loss of the molten metal in the storage chamber 201. The heat-replenishing pipe 27 in the insulation layer 202 can automatically adjust its operation according to the temperature in the storage chamber 201. The insulation layer 202 is equipped with a temperature sensing system, which is connected to the control system and adjusts the working state of the heat-replenishing pipe 27 through sensing information. This system can be achieved directly using existing related technologies, so it will not be described in detail. The insulation layer 202 and the heat-replenishing pipe 27 can maintain the molten metal in a suitable semi-solid temperature range, further reducing heat loss, reducing energy consumption, and achieving energy-saving effects.

[0052] The high-temperature steam generated inside the storage chamber 201 enters the sealed cavity between the heat insulation shell 211 and the feed pipe 21 through the air inlet 212. The waste heat of the steam is used to keep the molten metal in the feed pipe 21 warm, reducing heat loss during the feeding process, further improving the energy-saving effect, and realizing the recovery and utilization of waste heat.

[0053] When it is necessary to supply material to the injection chamber 3, the quantitative discharge valve 28 at the bottom of the storage chamber 201 is opened by the control system to control the uniform semi-solid molten metal in the storage chamber 201 to be quantitatively fed into the injection chamber 3, so as to avoid the die casting process being affected by too much or too little material supply.

[0054] When the pusher rod 4 pushes molten metal into the injection chamber 3, the residual air in the injection chamber 3 will generate pressure, which will push up the sealing ball 312 on the inner wall of the exhaust mechanism 31. The sealing ball 312 rises under the limiting action of the limiting frame 313, so that the air in the injection chamber 3 is discharged through the exhaust groove 311 at the top of the exhaust mechanism 31.

[0055] After the material is pushed out, the sealing ball 312 falls back under its own gravity and fits against the inner wall of the exhaust mechanism 31 to achieve sealing, preventing external air from entering the injection chamber 3, preventing air from mixing into the molten metal and causing defects such as pores, and further ensuring the product molding quality.

[0056] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A composite feeding device for semi-solid aluminum alloy die casting, comprising a feeding device (1), an injection chamber (3), and a pusher rod (4), characterized in that: The injection chamber (3) is provided with a fixed outer shell (2) on the outside, and a storage chamber (201) is provided on the inner wall of the fixed outer shell (2). The bottom of the storage chamber (201) is provided with a discharge valve (28) that is connected to the inlet of the injection chamber (3). The storage chamber (201) is provided with stirring blades (26) for stirring the molten metal inside the storage chamber (201) in real time. The storage chamber (201) and the fixed outer shell (2) are provided with a heat insulation layer (202), and a heat replenishing pipe (27) is provided inside the heat insulation layer (202). The top of the storage chamber (201) is provided with a cover plate (22), and a motor (23) is fixedly installed on the top of the cover plate (22). The bottom of the motor (23) is fixedly installed with a drive structure for driving the stirring blades (26) to rotate and move up and down inside the storage chamber (201).

2. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: The drive structure includes a drive rod (231), a fixed rod (24), and a lifting frame (25). The top end of the drive rod (231) is fixedly connected to the output shaft of the motor (23), and the outer wall of the drive rod (231) is rotatably mounted on the inner wall of the fixed rod (24). The lifting frame (25) is slidably mounted between the drive rod (231) and the fixed rod (24), and a rotating shaft (261) is fixedly mounted on the top of the stirring blade (26). The stirring blade (26) is fixedly mounted on the bottom end of the lifting frame (25) through the rotating shaft (261).

3. The composite feeding device for semi-solid aluminum alloy die casting according to claim 2, characterized in that: The bottom end of the drive rod (231) is fixedly installed with a limiting block (232), and the lifting frame (25) is provided with a limiting groove (252) that is compatible with the limiting block (232). The limiting block (232) is slidably installed in the limiting groove (252) to enable the drive rod (231) to drive the lifting frame (25) to rotate synchronously.

4. The composite feeding device for semi-solid aluminum alloy die casting according to claim 2, characterized in that: A guide column (251) is fixedly installed on one side of the bottom of the lifting frame (25), and an annular guide groove (241) adapted to the guide column (251) is opened on the inner wall of the fixing rod (24). The guide column (251) is slidably installed in the guide groove (241) to guide the lifting frame (25) to achieve reciprocating lifting when it rotates.

5. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: The stirring blade (26) is inclined to the side wall of the storage chamber (201), and when the stirring blade (26) moves up and down with the lifting frame (25), it can fit against the inner wall of the storage chamber (201) to stir, so as to avoid material segregation or residue.

6. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: A discharge valve (28) is fixedly installed at the bottom of the storage chamber (201), and the discharge valve (28) is a quantitative control valve. The discharge valve (28) is installed between the bottom of the storage chamber (201) and the inlet of the injection chamber (3) to control the quantitative delivery of molten metal.

7. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: The injection chamber (3) is fixedly installed with an exhaust mechanism (31) at one end near the die casting machine. The exhaust mechanism (31) has multiple exhaust grooves (311) on its upper part. The inner wall of the exhaust mechanism (31) is fixedly installed with a limit frame (313), and a sealing ball (312) is movably installed on the inner wall of the exhaust mechanism (31). The diameter of the sealing ball (312) corresponds to the inner diameter of the exhaust mechanism (31). When the push rod (4) pushes the material, the gas in the cavity can lift the sealing ball (312) and be discharged from the exhaust groove (311) to prevent air from mixing into the molten metal.

8. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: The top of the storage chamber (201) is fixedly installed with a feed pipe (21) for conveying semi-solid molten metal into the storage chamber (201), and the outer wall of the feed pipe (21) is fitted with a heat insulation shell (211).

9. The composite feeding device for semi-solid aluminum alloy die casting according to claim 1, characterized in that: An air inlet (212) is fixedly installed on the cover plate (22), and the top of the air inlet (212) is fixedly installed on the open end of the heat insulation shell (211) near the storage chamber (201), and the end of the heat insulation shell (211) away from the fixed shell (2) is a closed end.

10. A composite feeding device for semi-solid aluminum alloy die casting according to claim 9, characterized in that: The air inlet (212) is connected to the storage chamber (201) and the inner cavity of the heat insulation shell (211) respectively. The high-temperature steam in the storage chamber (201) can enter the cavity between the heat insulation shell (211) and the feed pipe (21) through the air inlet (212) to reduce the heat dissipation of the molten metal in the feed pipe (21) by utilizing the residual heat of the steam.

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