Aluminum alloy round bar casting apparatus with closed feed chute

Abstract

The application relates to an aluminum alloy round bar casting equipment with a closed feeding chute, which comprises a processing box, a lifting mechanism fixedly connected outside the processing box, a blocking bottom plate fixedly connected outside the lifting mechanism, a cooling forming ring abutting against the top end of the blocking bottom plate, a plurality of limiting inclined blocks arranged outside the cooling forming ring, a leakage ring arranged outside the cooling forming ring, and a connecting tank fixedly connected to the top end of the leakage ring. Through cooperation of the limiting chute, the chute cover and the auger conveying structure, the beneficial effect of closed conveying of aluminum alloy molten raw materials is realized, material spattering is effectively prevented, casting operation safety is ensured, uniform and stable feeding can be realized, and the influence of uneven material conveying on casting quality is avoided. Through cooperation of the rotating circular fan, the screw transmission structure and the spring, the reciprocating rotary flow guide structure is realized, the beneficial effect of uniform dispersion and sufficient shunting of the molten aluminum liquid is realized, local accumulation of raw materials is prevented, and material conveying is more uniform and stable.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy round bar casting technology, specifically to an aluminum alloy round bar casting equipment with a closed feeding chute. Background Technology

[0002] Aluminum alloy round bars are the basic raw materials for aluminum alloy profile processing and are widely used in many industries such as aerospace, automobile manufacturing, hardware and building materials, and precision instruments, with huge market demand. In the industrial production process of aluminum alloy round bars, the conveying and feeding of molten aluminum alloy is the core link of casting processing, which directly determines the safety of casting operations and the basic quality of the finished round bars. Therefore, extremely high requirements are placed on the feeding stability, sealing performance, and safety of casting equipment.

[0003] Currently, traditional aluminum alloy round bar casting equipment mostly adopts an open chute direct feeding method in the material feeding stage. The molten aluminum alloy is directly transported into the forming structure through the open chute to complete the casting operation. However, the feeding structure of the existing equipment has obvious defects. On the one hand, the open chute has no closed protective structure, and the high-temperature molten aluminum alloy raw material is very prone to splashing during the transportation process. This not only causes material waste, but also easily leads to safety accidents such as high temperature burns and equipment damage, resulting in a low safety factor. On the other hand, traditional open chutes rely on the material's own weight for gravity feeding, making it impossible to accurately control the feeding speed. This easily leads to inconsistent material conveying speed, material accumulation, or material interruption. The material conveying uniformity is poor, which in turn leads to uneven thickness and many forming defects in the subsequent aluminum alloy round bar casting, seriously affecting the product casting quality and production yield. Summary of the Invention

[0004] The purpose of this invention is to provide an aluminum alloy round bar casting equipment with a closed feeding chute.

[0005] The objective of this invention is achieved through the following technical solution: an aluminum alloy round bar casting equipment with a sealed feeding chute, comprising a processing box, a lifting mechanism fixedly connected to the outside of the processing box, a sealing base plate fixedly connected to the outside of the lifting mechanism, a cooling and forming ring abutting at the top of the sealing base plate, multiple limiting inclined blocks provided outside the cooling and forming ring, a perforated ring provided outside the cooling and forming ring, a connecting tank fixedly connected to the top of the perforated ring, a fixed long plate fixedly connected to the top of the connecting tank, a fixed round block fixedly connected to the bottom of the fixed long plate, a fixed threaded rod threadedly connected to the outside of the fixed round block, a rotating threaded sleeve threadedly connected to the outside of the fixed threaded rod, a spring sleeved on the outside of the fixed threaded rod, a fixed long rod provided at the bottom of the rotating threaded sleeve, a rotating ring slidably connected to the outside of the fixed long rod, a rotating fan fixedly connected to the bottom of the fixed long rod, and a rotating guide rod fixedly connected to the bottom of the rotating ring.

[0006] As a further description of the above technical solution: The lifting mechanism includes a motor, the drive end of which is fixedly connected to a lifting threaded rod, the external thread of which is connected to a connecting threaded sleeve, and the external thread of which is fixedly connected to a connecting long rod. As a further description of the above technical solution: A cooling box is fixedly connected to the outside of the leaky ring. A limiting ring is fixedly connected to the top of the cooling box. A second motor is fixedly connected to the top of the limiting ring. A gear is fixedly connected to the drive end of the second motor. A toothed ring is provided inside the limiting ring. The toothed ring and the gear are meshed together. Multiple rotating abutment plates are rotatably connected to the outside of the toothed ring. A telescopic rod is provided outside the rotating abutment plate. A second spring is sleeved on the outside of the telescopic rod. As a further description of the above technical solution: The connecting tank is fixedly connected to a limiting chute, the limiting chute is rotatably connected to a chute cover, the limiting chute is fixedly connected to a motor three, and the drive end of the motor three is fixedly connected to an auger rod. As a further description of the above technical solution: One end of the spring is fixedly connected to the bottom end of the fixed circular block, and the other end of the spring is fixedly connected to the top end of the rotating threaded sleeve. As a further description of the above technical solution: The rotating threaded sleeve has two layers. The outer layer of the rotating threaded sleeve can be fixed, and the inner thread of the rotating threaded sleeve is connected to the outer layer of the fixed threaded rod. The bottom end of the inner layer of the rotating threaded sleeve is fixedly connected to the top ends of two fixed long rods. As a further description of the above technical solution: The outer part of the rotating ring is rotatably connected to the outside of the connecting tank, the inner part of the rotating fan is fixedly connected to the outside of the rotating guide rod, and the bottom end of the fixed threaded rod is rotatably connected to the top end of the rotating ring. As a further description of the above technical solution: The rotating abutment plate is rotatably connected to the outside of the toothed ring, one end of the second spring is fixedly connected to the outside of the rotating abutment plate, and the other end of the second spring is fixedly connected to the outside of the toothed ring. As a further description of the above technical solution: The bottom end of the motor is fixedly connected to the top of the processing box, the outer side of the connecting threaded sleeve is slidably connected to the inside of the processing box, and the outer side of the connecting long rod is slidably connected to the inside of the processing box.

[0007] Compared with the prior art, the advantages of the present invention are as follows: By combining a limiting chute, chute cover, and auger conveyor structure, a closed-loop conveying system for molten aluminum alloy raw materials is achieved, effectively preventing material splashing, ensuring casting operation safety, and providing uniform and stable feeding to avoid uneven material delivery affecting casting quality. A reciprocating rotary guide structure using a rotating fan, threaded drive, and spring-driven mechanism ensures uniform dispersion and full diversion of molten aluminum, preventing localized material accumulation and making material delivery more uniform and stable. A lifting screw-driven lifting structure enables continuous forming of aluminum alloy round bars, allowing for continuous material replenishment and steady demolding, significantly improving casting efficiency. A vibration structure using gear and ring drive, rotating abutment plate, and spring-driven mechanism effectively removes bubbles from the molten material within the forming cavity, reducing internal porosity defects in the aluminum alloy round bars and significantly improving the density and overall processing quality of the finished product. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the main body of an embodiment of an aluminum alloy round bar casting equipment with a closed feeding chute according to the present invention. Figure 2 This is a schematic diagram of the cooling box of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 3 This is a schematic diagram of the structure of the fixed long plate of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 4 This is a schematic diagram of the telescopic rod structure of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 5 This is a schematic diagram of the rotating abutment plate of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 6 This is a schematic diagram of the limiting chute of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 7 This is a schematic diagram of the connecting tank of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention. Figure 8 This is a schematic diagram of the rotating guide rod of an aluminum alloy round bar casting equipment with a closed feeding chute proposed in this invention.

[0009] Labeling Explanation: 1. Machining Box; 2. Motor 1; 3. Lifting Threaded Rod; 4. Connecting Threaded Sleeve; 5. Connecting Long Rod; 6. Sealing Bottom Plate; 7. Cooling Forming Ring; 8. Limiting Inclined Block; 9. Leakage Ring; 10. Connecting Tank; 11. Fixed Long Plate; 12. Fixed Round Block; 13. Fixed Threaded Rod; 14. Rotating Threaded Sleeve; 15. Spring 1; 16. Fixed Long Rod; 17. Rotating Ring; 18. Rotating Fan; 19. Rotating Guide Rod; 20. Limiting Ring; 21. Motor 2; 22. Gear; 23. Gear Ring; 24. Rotating Abutment Plate; 25. Telescopic Rod; 26. Spring 2; 27. Limiting Chute; 28. Chute Cover; 29. ​​Motor 3; 30. Screw Rod; 31. Cooling Box. Detailed Implementation

[0010] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figure 1 and 8 The diagram shows an embodiment of an aluminum alloy round bar casting equipment with a closed feeding chute provided by the present invention. It includes a processing box 1, which heats and melts the aluminum alloy raw material at high temperature, converting solid aluminum alloy into liquid molten aluminum, providing qualified liquid processing material for subsequent aluminum alloy round bar casting. A lifting mechanism is fixedly connected to the outside of the processing box 1. The lifting mechanism includes a motor 2, the bottom of which is fixedly connected to the top of the processing box 1. A connecting threaded sleeve 4 is slidably connected to the inside of the processing box 1, and a connecting long rod 5 is slidably connected to the inside of the processing box 1. A lifting threaded rod 3 is fixedly connected to the drive end of the motor 2. A connecting threaded sleeve 4 is threadedly connected to the outside of the lifting threaded rod 3, and a connecting long rod 5 is fixedly connected to the outside of the connecting threaded sleeve 4. The lifting mechanism, consisting of motor 12, lifting threaded rod 3, connecting threaded sleeve 4, and connecting long rod 5, has the function of uniformly driving the sealing base plate 6 to move downward, which can realize the steady demolding of the formed round bar, while continuously replenishing the top of the forming cavity with molten raw materials to maintain the stability of the liquid level in the cavity, realizing uninterrupted continuous casting processing of aluminum alloy round bars, and effectively improving the overall casting processing efficiency.

[0011] The lifting mechanism is externally fixedly connected to a sealing base plate 6, the top of which abuts against a cooling forming ring 7. The sealing base plate 6 serves to seal the bottom of the cooling forming ring 7, allowing it to receive molten aluminum to form a sealed forming cavity, while also supporting incompletely solidified aluminum billets, ensuring stable initial cooling and shaping operations. Multiple limiting inclined blocks 8 are provided externally to the cooling forming ring 7. The cooling forming ring 7 limits the forming specifications of the aluminum alloy round bars, allowing the molten aluminum to be formed in a regular shape within the cavity, and simultaneously working with the vibration structure to complete the defoaming operation, ensuring the forming accuracy of the round bars. The limiting inclined blocks 8 work with the vibration structure to achieve high-frequency striking, alternating with the rotating abutment plate 24 to provide a structural basis for cavity vibration defoaming. A perforated ring 9 is provided externally to the cooling forming ring 7, the top of which is fixedly connected to a connecting tank 10. The connecting tank 10 serves to transfer and store molten aluminum, receiving materials conveyed by the limiting chute 27, temporarily buffering the molten aluminum, and ensuring a continuous and stable supply of materials to the subsequent forming structure.

[0012] A fixed long rod 16 is provided at the bottom end of the rotating threaded sleeve 14. A rotating ring 17 is slidably connected to the outside of the fixed long rod 16. The fixed long rod 16 and the rotating ring 17 have a linkage transmission function, which can ensure the stability of the flow guiding structure and complete the rotational flow guiding operation to ensure smooth equipment operation. The outside of the rotating ring 17 is rotatably connected to the outside of the connecting tank 10, and the bottom end of the fixed threaded rod 13 is rotatably connected to the top end of the rotating ring 17. A rotating fan 18 is fixedly connected to the bottom end of the fixed long rod 16. The rotating fan 18 has the function of sensing the pressure of the molten aluminum and cooperating to complete the flow guiding operation. It can complete the vertical displacement by relying on the self-weight pressure of the molten aluminum, and at the same time, it can initially disperse and guide the falling molten aluminum. A rotating guide rod 19 is fixedly connected to the bottom end of the rotating ring 17. The rotating guide rod 19 has the function of secondary guiding and conveying, which can accurately guide the falling molten aluminum, so that the molten aluminum falls evenly into the interior of the cooling and forming ring 7, avoiding material deviation and spillage, and ensuring that the material in the forming cavity is evenly filled.

[0013] A cooling box 31 is fixedly connected to the outside of the perforated ring 9. The cooling box 31 provides a low-temperature cooling environment for the forming cavity, which can accelerate the solidification and forming of molten aluminum and improve the cooling and shaping efficiency of the aluminum alloy round bar. A limiting ring 20 is fixedly connected to the top of the cooling box 31. The limiting ring 20 fixes the transmission components and limits the rotation trajectory of the gear ring 23, ensuring the stability and regularity of the vibration transmission structure. A second motor 21 is fixedly connected to the top of the limiting ring 20. A gear 22 is fixedly connected to the drive end of the second motor 21. A gear ring 23 is provided inside the limiting ring 20, and the gear ring 23 and the gear 22 are meshed. The second motor 21, the gear 22 and the gear ring 23 cooperate with each other to provide a power source for the vibration striking operation, which can drive the rotating abutment plate 24 to rotate uniformly around the cooling and forming ring 7.

[0014] Multiple rotating abutment plates 24 are rotatably connected to the outside of the toothed ring 23. A telescopic rod 25 is mounted on the outside of each rotating abutment plate 24, and a second spring 26 is sleeved on the outside of the telescopic rod 25. One end of the second spring 26 is fixedly connected to the outside of the rotating abutment plate 24, and the other end is fixedly connected to the outside of the toothed ring 23. The rotating abutment plates 24 and the second spring 26 cooperate to provide a high-frequency impact cooling and forming ring 7, which generates continuous micro-vibration in the forming cavity, effectively breaking up tiny air bubbles trapped inside the molten aluminum, reducing porosity defects in the finished round bar, and significantly improving the density and overall processing quality of the finished aluminum alloy round bar.

[0015] The external fixed connection of the connecting tank 10 is a limiting chute 27. The limiting chute 27 serves to receive the molten aluminum output from the processing box 1, providing a dedicated conveying channel for the molten raw materials and ensuring the regularity and orderliness of material conveying. The external rotatable connection of the limiting chute 27 is a chute cover 28, which seals the channel of the limiting chute 27, enabling fully enclosed conveying operations. This effectively prevents splashing during the conveying of high-temperature molten aluminum alloy materials, avoids safety hazards caused by high-temperature materials, and improves the safety of equipment operation. The external fixed connection of the limiting chute 27 is a motor 29. The drive end of the motor 29 is fixedly connected to an auger rod 30. The motor 29 and the auger rod 30 work together to uniformly push the molten aluminum, precisely controlling the material conveying speed, achieving stable and uniform feeding, avoiding material interruption, accumulation, and uneven conveying, and ensuring the basic quality of subsequent casting processing.

[0016] Working principle: The aluminum alloy raw material is heated to high temperature and melted inside the processing box 1. After melting, the liquid aluminum alloy raw material is transported from inside the processing box 1 to the limiting chute 27. The limiting chute 27 is equipped with a motor 29 and an auger rod 30. After the motor 29 is started, the motor output drives the auger rod 30 to rotate continuously. Relying on the spiral pushing force of the auger blades, the liquid aluminum alloy stored inside the limiting chute 27 is transported forward at a uniform speed. The chute cover 28 closes and covers the outside of the limiting chute 27, completely sealing the conveying channel and preventing the high-temperature molten metal from splashing out, avoiding the safety hazards caused by the splashing of high-temperature materials. The auger rod 30 continues to rotate and steadily pushes the liquid aluminum alloy into the connecting tank 10.

[0017] After the liquid aluminum alloy enters the cavity of the connecting tank 10, the fluid material directly contacts the rotating fan 18 at the bottom of the cavity. The liquid metal itself exerts continuous downward pressure, pushing the rotating fan 18 to move downward in the vertical direction. The rotating fan 18 simultaneously drives the two fixed long rods 16 connected to the top to move downward in sync. The top of the fixed long rods 16 is fixedly connected to the rotating threaded sleeve 14, which moves downward in sync with the fixed long rods 16. The internal threads of the rotating threaded sleeve 14 are engaged with the outer wall of the fixed threaded rod 13. The fixed threaded rod 13 remains in a fixed position. During the downward linear movement of the rotating threaded sleeve 14, it is constrained by the engagement of the threaded pair and simultaneously generates a circumferential rotation. When the rotating threaded sleeve 14 rotates downward, it simultaneously drives the fixed long rod 16 connected to the bottom, the rotating ring 17 slidably assembled on the outside of the fixed long rod 16, and the rotating fan 18 at the bottom to rotate together. The rotating fan 18 in the rotating state rotates and guides the liquid aluminum alloy flowing into the connecting tank 10, evenly dispersing the material and avoiding local accumulation of raw materials.

[0018] During the downward movement of the rotating threaded sleeve 14, the spring 15, which is mounted on the outside of the fixed threaded rod 13, is continuously compressed. The two ends of the spring 15 abut against the bottom of the fixed circular block 12 and the top of the rotating threaded sleeve 14, respectively. When the rotating fan 18 moves downward to the bottom of its stroke, the downward pressure of the liquid aluminum alloy reaches the critical value and gradually weakens. The compressed spring 15 releases its own elastic restoring force and pushes the rotating threaded sleeve 14 upward along the fixed threaded rod 13 to rotate back to its original position. At the same time, it drives the fixed long rod 16, the rotating ring 17, and the rotating fan 18 to move upward, completing the reciprocating lifting and rotating motion of the single flow guiding component. This continuously cycles and stirs and diverts the molten aluminum flowing into the connecting tank 10.

[0019] When the rotating ring 17 rotates synchronously with the fixed long rod 16, it drives the rotating guide rod 19 fixed at the bottom to rotate synchronously. The rotating guide rod 19 extends into the cooling and forming ring 7. During the rotation, it guides the liquid aluminum alloy dripping from the connecting tank 10 to fall evenly into the cavity of the cooling and forming ring 7. The bottom opening of the cooling and forming ring 7 abuts against the upper surface of the sealing base plate 6. The liquid aluminum alloy gathers in the sealed cavity formed by the top of the sealing base plate 6 and the cooling and forming ring 7, and begins to contact the low temperature cavity for preliminary cooling and shaping.

[0020] After a certain amount of molten aluminum liquid accumulates inside the cooling and forming ring 7 and the bottom material initially solidifies, the motor 2 mounted on the top of the processing box 1 is started. The drive end of the motor 2 drives the lifting threaded rod 3 to rotate continuously. The threaded sleeve 4 is connected to the outer wall of the lifting threaded rod 3. Under the action of thread transmission, the connecting threaded sleeve 4 moves vertically downward along the lifting threaded rod 3. The connecting long rod 5 is fixedly connected to the outside of the connecting threaded sleeve 4. The connecting long rod 5 slides downward synchronously. The end of the connecting long rod 5 is connected to the sealing base plate 6, thereby driving the sealing base plate 6 to move downward at a uniform speed. During the downward movement of the sealing base plate 6, the aluminum alloy round bar that has been initially cooled and formed inside the cooling and forming ring 7 descends synchronously with the sealing base plate 6. The upper end of the cooling and forming ring 7 continuously receives the fresh molten aluminum liquid delivered from the connecting tank 10 and continuously replenishes the liquid raw material to the top center of the forming cavity, maintaining the stability of the liquid level inside the cavity and realizing the uninterrupted continuous casting processing of the aluminum alloy round bar.

[0021] Multiple sets of limiting inclined blocks 8 are evenly distributed on the outer side of the cooling and forming ring 7. A limiting ring 20 is fixedly installed at the top of the cooling box 31. A motor 21 is mounted on the top of the limiting ring 20. The output end of the motor 21 drives the gear 22 to rotate. The gear 22 meshes with the toothed ring 23 inside the limiting ring 20. When the gear 22 rotates, it drives the toothed ring 23 to rotate circumferentially along the inner wall of the limiting ring 20. Multiple rotating abutment plates 24 are hinged to the inner side of the toothed ring 23. A spring 26 is installed between each rotating abutment plate 24 and the toothed ring 23. The two ends of the spring 26 are fixed to the outer wall of the rotating abutment plate 24 and the inner wall of the toothed ring 23, respectively. During the continuous rotation of the toothed ring 23, the rotating abutment plate 24 rotates synchronously around the cooling and forming ring 7 with the toothed ring 23. The end of the rotating abutment plate 24 continuously interacts with the limiting inclined blocks 8 on the outer wall of the cooling and forming ring 7. The inclined structure of the limiting wedge 8 pushes the rotating abutment plate 24 outward, simultaneously stretching the second spring 26. After the rotating abutment plate 24 slides away from the limiting wedge 8, the second spring 26 contracts and rebounds, pulling the rotating abutment plate 24 to quickly impact the outer wall of the cooling forming ring 7. This cycle repeats, continuously striking and vibrating the outer wall of the cooling forming ring 7 at high frequency. The vibration force is transmitted to the molten aluminum alloy material inside the cooling forming ring 7 that has not yet fully solidified, breaking up the tiny air bubbles trapped inside the molten metal, reducing the porosity defects inside the formed round bar, and improving the density of the finished aluminum alloy round bar. The cooling forming ring 7 and the rotating guide rod 19 work together to complete the entire process of material guidance and conveying. Combined with the continuous downward feeding of the lifting mechanism and the defoaming vibration of the limiting ring 20 assembly, the entire continuous casting process of the aluminum alloy round bar is completed.

Claims

1. A casting equipment for aluminum alloy round bars with a closed feeding chute, comprising a processing box (1), characterized in that: The processing box (1) is externally connected to a lifting mechanism, and a sealing base plate (6) is externally connected to the lifting mechanism. The top of the sealing base plate (6) abuts against a cooling forming ring (7). Multiple limiting inclined blocks (8) are provided on the outside of the cooling forming ring (7). A perforated ring (9) is provided on the outside of the cooling forming ring (7). A connecting tank (10) is fixedly connected to the top of the perforated ring (9). A fixed long plate (11) is fixedly connected to the top of the connecting tank (10). A fixed round block (12) is fixedly connected to the bottom of the fixed long plate (11). The fixed circular block (12) is externally threaded with a fixed threaded rod (13), the fixed threaded rod (13) is externally threaded with a rotating threaded sleeve (14), the fixed threaded rod (13) is externally sleeved with a spring (15), the bottom end of the rotating threaded sleeve (14) is provided with a fixed long rod (16), the outside of the fixed long rod (16) is slidably connected with a rotating ring (17), the bottom end of the fixed long rod (16) is fixedly connected with a rotating fan (18), and the bottom end of the rotating ring (17) is fixedly connected with a rotating guide rod (19).

2. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: The lifting mechanism includes a motor (2), the drive end of the motor (2) is fixedly connected to a lifting threaded rod (3), the external thread of the lifting threaded rod (3) is connected to a connecting threaded sleeve (4), and the external thread of the connecting threaded sleeve (4) is fixedly connected to a connecting long rod (5).

3. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: A cooling box (31) is fixedly connected to the outside of the leak ring (9). A limiting ring (20) is fixedly connected to the top of the cooling box (31). A motor (21) is fixedly connected to the top of the limiting ring (20). A gear (22) is fixedly connected to the drive end of the motor (21). A toothed ring (23) is provided inside the limiting ring (20). The toothed ring (23) and the gear (22) are meshed. Multiple rotating abutment plates (24) are rotatably connected to the outside of the toothed ring (23). A telescopic rod (25) is provided outside the rotating abutment plate (24). A spring (26) is sleeved on the outside of the telescopic rod (25).

4. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: The connecting tank (10) is fixedly connected to a limiting chute (27), the limiting chute (27) is rotatably connected to a chute cover (28), the limiting chute (27) is fixedly connected to a motor (29), and the drive end of the motor (29) is fixedly connected to an auger rod (30).

5. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: One end of the spring (15) is fixedly connected to the bottom end of the fixed round block (12), and the other end of the spring (15) is fixedly connected to the top end of the rotating threaded sleeve (14).

6. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: The rotating threaded sleeve (14) has two layers. The outer part of the rotating threaded sleeve (14) can be fixed. The inner thread of the rotating threaded sleeve (14) is connected to the outer part of the fixed threaded rod (13). The bottom of the inner layer of the rotating threaded sleeve (14) is fixedly connected to the top of the two fixed long rods (16).

7. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 1, characterized in that: The outer part of the rotating ring (17) is rotatably connected to the outside of the connecting tank (10), the inner part of the rotating fan (18) is fixedly connected to the outside of the rotating guide rod (19), and the bottom end of the fixed threaded rod (13) is rotatably connected to the top end of the rotating ring (17).

8. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 3, characterized in that: The outside of the rotating abutment plate (24) is rotatably connected to the outside of the toothed ring (23), one end of the second spring (26) is fixedly connected to the outside of the rotating abutment plate (24), and the other end of the second spring (26) is fixedly connected to the outside of the toothed ring (23).

9. The aluminum alloy round bar casting equipment with a closed feeding chute according to claim 2, characterized in that: The bottom end of the motor (2) is fixedly connected to the top end of the processing box (1), the outside of the connecting threaded sleeve (4) is slidably connected to the inside of the processing box (1), and the outside of the connecting long rod (5) is slidably connected to the inside of the processing box (1).

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