Aluminum alloy rapid casting mechanism capable of improving surface quality

Abstract

The utility model relates to the technical field of aluminum alloy casting, in particular to an aluminum alloy rapid casting mechanism capable of improving surface quality, which comprises a die cavity, a vibrating mechanism is arranged below the die cavity, a vibrating motor drives the die cavity above a connecting seat to vibrate, molten metal in the die cavity fluctuates through vibration, and the surface quality of the die cavity is improved. The vibration motor drives the mold cavity above the connecting seat to vibrate, and the right-angle plate limits the mold cavity, so that the aluminum liquid casting is filled into each corner in the mold cavity, and air is discharged before the metal liquid is filled, so that the situation that the aluminum liquid casting is wrapped in the casting to form a cavity or the surface of the casting forms a recess is avoided. The mold cavity can only vibrate in an up-down moving mode, molten metal in the mold cavity fluctuates through vibration, all corners in the mold cavity are filled with molten aluminum castings, air is discharged before the molten metal is filled, and the situation that the molten aluminum castings are wrapped in the castings to form cavities or pits are formed in the surfaces of the castings is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy casting, in particular to a rapid aluminum alloy casting mechanism for improving surface quality. Background Technique

[0002] The main purpose of aluminum alloy casting is to manufacture qualified shaped parts. During use, aluminum alloy liquid is poured into a casting cavity adapted to the shape of the part. After it cools and solidifies, the corresponding part can be obtained.

[0003] The prior art, such as the publication number CN206169256U, provides an aluminum alloy wheel casting mechanism, belonging to the technical field of metal melting and casting. It includes a low-pressure heat preservation furnace, a low-pressure casting platform, a wheel forming die, a riser tube, and a riser tube protective sleeve. The low-pressure heat preservation furnace is located below the low-pressure casting platform. The wheel forming die is installed on the low-pressure casting platform. The riser tube is connected to the pouring port of the wheel forming die, and its lower end is immersed in the aluminum liquid in the low-pressure heat preservation furnace. A ceramic filter plate is arranged in the riser tube. The ceramic filter plate is composed of a protective layer, a filtering layer, and a protective layer in sequence. Uniform grid-shaped liquid flow holes are arranged on the protective layer, and uniform honeycomb holes are arranged on the filtering layer. The through-hole rate of the protective layer is greater than that of the filtering layer. It solves the defect that placing an iron filter screen for filtration causes the gate not to be directly recycled, affecting the excessive iron content in the aluminum liquid, and has the advantages of reducing the pouring resistance, increasing the pouring speed, ensuring smooth and continuous pouring, and protecting the strength, high-temperature impact resistance, and high-temperature load-bearing capacity of the filter plate.

[0004] In this solution, the quality of casting processing is mainly improved by filtering impurities in the aluminum liquid. However, in the actual use process, in addition to the impurities in the aluminum liquid affecting the quality of the casting, the following situations may also affect the quality of the casting: 1. The air in the cavity cannot be discharged: During the casting process, if the original air in the cavity cannot be discharged before the metal liquid fills it, it will be wrapped in the casting to form a cavity. 2. The cooling rate of the mold is uneven: This causes the solidification rates of different parts of the casting to be out of sync and the shrinkage to be uneven, resulting in cavities. In view of this, we propose a rapid aluminum alloy casting mechanism for improving surface quality. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rapid aluminum alloy casting mechanism for improving surface quality. This rapid aluminum alloy casting mechanism for improving surface quality solves the problem of possible cavities during the casting process of the casting.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rapid casting mechanism for aluminum alloy to improve surface quality, including a mold cavity. A vibration mechanism is arranged below the mold cavity. The vibration mechanism includes a base, which is arranged below the mold cavity. Right-angle plates are respectively connected to the four corners of the top of the base, and the right-angle plates are slidably connected to the outer wall of the mold cavity. A connecting seat is connected to the bottom of the mold cavity, and a vibration motor is arranged at the bottom of the connecting seat. Support springs are respectively connected between the connecting seat and the base.

[0008] Preferably, a pouring port is connected to the top of the mold cavity, and an exhaust hole is connected to the position on the left side of the pouring port at the top of the mold cavity.

[0009] Preferably, a cooling mechanism is arranged on the back of the mold cavity. The cooling mechanism includes cooling pipes, which are connected inside the connecting seat and are evenly distributed. The two ends of the cooling pipes are respectively connected with shunt pipes.

[0010] Preferably, the cooling mechanism further includes a cooling tank, which is arranged on the back of the mold cavity. A liquid injection pipe is connected to the top of the cooling tank, and the liquid injection pipe is connected to the shunt pipe at the back, while the bottom of the shunt pipe at the front is connected with a liquid discharge pipe.

[0011] Preferably, air injection pipes are respectively connected to the bottom sides of the cooling tank, and an exhaust valve is connected to the air injection pipes. Air injection assemblies are respectively arranged on both sides of the base, and the air injection pipes are respectively connected to the air injection assemblies at the corresponding positions.

[0012] Preferably, a piston disk is slidably connected to the inner wall of the cooling tank, and a limiting column is connected to the bottom of the piston disk.

[0013] Preferably, the air injection assembly is composed of a connecting block, a pressing block, a cylinder and an air inlet pipe. The connecting block is connected to one side of the base, the pressing block is connected to one side of the connecting seat, the cylinder is on the top of the connecting base, the air inlet pipe is slidably connected to the inner wall of the cylinder, the air inlet pipe penetrates through the pressing block, and a one-way valve is connected to the bottom of the inner wall of the air inlet pipe.

[0014] By means of the above technical solution, the present utility model provides a rapid casting mechanism for aluminum alloy to improve surface quality. It has at least the following beneficial effects:

[0015] First, in the present utility model, the vibration motor drives the mold cavity above the connecting seat to vibrate. Due to the limitation of the mold cavity by the right-angle plates, the mold cavity can only vibrate in a way of moving up and down. Through vibration, the molten metal in the mold cavity fluctuates, so that the aluminum liquid casting fills into every corner inside the mold cavity, and the air is discharged before the molten metal fills, so as to avoid the formation of cavities wrapped in the casting or depressions on the surface of the casting.

[0016] II. In the utility model, the injection gas assembly uses the vibration generated by the vibration mechanism as power to inject air into the injection gas pipe. The air is injected into the cooling tank through the injection gas pipe and jacks up the piston disc. When the piston disc rises, the coolant above the piston disc in the cooling tank is extruded from the injection liquid pipe. The coolant flows into the cooling pipe through the shunt pipe. When the coolant flows through the cooling pipe, it will take away the heat at the bottom of the upper mold cavity. In the initial stage of pouring, the flowing cooling water will take away a large amount of heat of the molten metal, enabling the molten metal to quickly form a hard and thick solidified shell, evenly release the bottom stress, and prevent cracks caused by stress concentration. In the subsequent stage, since the heat will always be lost from below the molten metal, when the molten metal solidifies and shrinks, the subsequent injected molten metal will fill it. In this way, while avoiding the problem of cavity formation caused by shrinkage and resulting in a decline in the quality of the casting, the cooling speed of the casting is also increased, improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the utility model and form a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure above the base in the utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the cooling tank in the utility model;

[0021] Figure 4 It is a partial cross-sectional view of the injection gas assembly in the utility model.

[0022] In the figures: 1, mold cavity; 11, pouring port; 12, exhaust hole; 2, vibration mechanism; 21, base; 22, right-angle plate; 23, connecting seat; 24, vibration motor; 25, support spring; 3, cooling mechanism; 31, injection gas assembly; 311, connecting block; 312, pressing block; 313, cylinder; 3131, injection gas pipe; 3132, exhaust valve; 314, intake pipe; 3141, check valve; 32, cooling tank; 321, piston disc; 322, limit post; 33, injection liquid pipe; 34, shunt pipe; 35, cooling pipe; 36, drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] A rapid casting mechanism for aluminum alloy to improve surface quality, as Figures 1-4 shown, includes a mold cavity 1. A vibration mechanism 2 is provided below the mold cavity 1. The vibration mechanism 2 includes a base 21. The base 21 is arranged below the mold cavity 1. Right-angle plates 22 are respectively connected to the four corners of the top of the base 21. The right-angle plates 22 are slidably connected to the outer wall of the mold cavity 1. A connecting seat 23 is connected to the bottom of the mold cavity 1. A vibration motor 24 is arranged at the bottom of the connecting seat 23. Support springs 25 are respectively connected between the connecting seat 23 and the base 21. Starting the vibration motor 24 drives the mold cavity 1 above the connecting seat 23 to vibrate. Due to the limitation of the mold cavity 1 by the right-angle plates 22, the mold cavity 1 can only vibrate in a vertical movement manner. Through vibration, the molten metal in the mold cavity 1 fluctuates, enabling the aluminum liquid casting to fill into every corner inside the mold cavity 1, and discharging the air before the molten metal fills, so as to avoid the formation of cavities wrapped in the casting or depressions on the surface of the casting. A pouring port 11 is connected to the top of the mold cavity 1 for pouring molten metal. An exhaust hole 12 is connected to the left side position of the top of the mold cavity 1 where the pouring port 11 is located, for the excess gas in the mold cavity 1.

[0026] In this embodiment, starting the vibration motor 24 drives the mold cavity 1 above the connecting seat 23 to vibrate. Due to the limitation of the mold cavity 1 by the right-angle plates 22, the mold cavity 1 can only vibrate in a vertical movement manner. Through vibration, the molten metal in the mold cavity 1 fluctuates, enabling the aluminum liquid casting to fill into every corner inside the mold cavity 1, and discharging the air before the molten metal fills, so as to avoid the formation of cavities wrapped in the casting or depressions on the surface of the casting.

[0027] Embodiment 2

[0028] As Figure 2 、 Figure 3 、 Figure 4As shown, a cooling mechanism 3 is provided on the back of the mold cavity 1. The cooling mechanism 3 includes a cooling pipe 35. The cooling pipe 35 is connected inside the connecting seat 23 and is evenly distributed. Both ends of the cooling pipe 35 are respectively connected with a shunt pipe 34. The coolant flows into the cooling pipe 35 through the shunt pipe 34. When the coolant flows through the cooling pipe 35, it will take away the heat at the bottom of the upper mold cavity 1. In the initial stage of pouring, the flowing cooling water will take away a large amount of heat of the molten metal, enabling the molten metal to quickly form a hard and thick solidified shell, evenly releasing the bottom stress and preventing cracks caused by stress concentration. In the subsequent stage, since heat will always be lost from below the molten metal, when the molten metal solidifies and shrinks, the subsequent injected molten metal will fill it. In this way, while avoiding the problem of cavity formation caused by shrinkage and resulting in a decline in the quality of the casting, it also improves the cooling speed of the casting and enhances the working efficiency. The cooling mechanism 3 also includes a cooling tank 32. The cooling tank 32 is arranged on the back of the mold cavity 1. The top of the cooling tank 32 is connected with a liquid injection pipe 33, and the liquid injection pipe 33 is connected with the shunt pipe 34 on the back. The bottom of the shunt pipe 34 on the front is connected with a drain pipe 36. After the coolant flows through the shunt pipe 34 and the cooling pipe 35 through the liquid injection pipe 33, the coolant that has absorbed a large amount of heat is discharged from the drain pipe 36. The bottoms of both sides of the cooling tank 32 are respectively connected with air injection pipes 3131, and an exhaust valve 3132 is connected to the air injection pipes 3131. The exhaust valve 3132 is used to discharge the gas in the air injection pipes 3131. Air injection assemblies 31 are respectively arranged on both sides of the base 21, and the air injection pipes 3131 are respectively connected with the air injection assemblies 31 at the corresponding positions. A piston disc 321 is slidably connected to the inner wall of the cooling tank 32, and a limiting column 322 is connected to the bottom of the piston disc 321. By injecting air into the air injection pipes 3131 through the air injection assemblies 31, the air is injected into the cooling tank 32 through the air injection pipes 3131 and pushes up the piston disc 321. When the piston disc 321 rises, the coolant above the piston disc 321 in the cooling tank 32 will be extruded into the liquid injection pipe 33. The air injection assembly 31 is composed of a connecting block 311, a pressing block 312, a cylinder 313, and an air inlet pipe 314. The connecting block 311 is connected to one side of the base 21, the pressing block 312 is connected to one side of the connecting seat 23, the cylinder 313 is on the top of the connecting base 21, and the air inlet pipe 314 is slidably connected to the inner wall of the cylinder 313. The air inlet pipe 314 penetrates through the pressing block 312. While driving the mold cavity 1 to vibrate up and down, the connecting seat 23 will drive the air inlet pipe 314 connected in the pressing block 312 to slide on the inner wall of the cylinder 313. A one-way valve 3141 is connected to the bottom of the inner wall of the air inlet pipe 314. When the air inlet pipe 314 slides on the inner wall of the cylinder 313, due to the effect of the one-way valve 3141, each time the air inlet pipe 314 is pressed down, the one-way valve 3141 will be in a closed state. At this time, the air in the cylinder 313 will be squeezed into the air inlet pipe 314. Each time the air inlet pipe 314 rises, the one-way valve 3141 will be in an open state. At this time, new air will re-enter the cylinder 313.This reciprocating movement facilitates the continuous squeezing of the air in the cylinder 313 into the air inlet pipe 314.

[0029] In this embodiment, while the connecting seat 23 drives the mold cavity 1 to vibrate up and down, it will drive the air inlet pipe 314 connected in the pressing block 312 to slide on the inner wall of the cylinder 313. Due to the function of the one-way valve 3141, each time the air inlet pipe 314 is pressed down, the one-way valve 3141 will be in a closed state. At this time, the air in the cylinder 313 will be squeezed into the air inlet pipe 314. Each time the air inlet pipe 314 rises, the one-way valve 3141 will be in an open state. At this time, new air will re-enter the cylinder 313, so as to facilitate the continuous squeezing of the air in the cylinder 313 into the air inlet pipe 314. The air is injected into the cooling tank 32 through the air injection pipe 3131 and lifts the piston disk 321. When the piston disk 321 rises, the coolant in the cooling tank 32 above the piston disk 321 will be squeezed out of the injection pipe 33 After the coolant flows through the injection pipe 33, the shunt pipe 34 and the cooling pipe 35, the coolant that has absorbed a large amount of heat is discharged from the discharge pipe 36. When the coolant flows into the cooling pipe 35 through the shunt pipe 34, the heat at the bottom of the upper mold cavity 1 will be taken away when the coolant flows through the cooling pipe 35. In the early stage of pouring, the cooling water will take away a large amount of heat from the molten metal, so that the molten metal will quickly form a hard and thick solidified shell, evenly release the bottom stress, and prevent stress concentration from causing cracks. In the subsequent stage, since heat will always be lost from the bottom of the molten metal, when the molten metal solidifies and shrinks, the subsequent injected molten metal will fill it. In this way, while avoiding the problem of cavities caused by shrinkage and the quality of the casting being reduced, the cooling speed of the casting is also improved, thereby improving the work efficiency.

[0030] When the aluminum alloy rapid casting mechanism for improving surface quality of the present utility model is in use, start the vibration motor 24 to drive the mold cavity 1 above the connecting seat 23 to vibrate. Due to the limitation of the mold cavity 1 by the right-angle plate 22, the mold cavity 1 can only vibrate in the up and down movement mode. Through vibration, the molten metal in the mold cavity 1 fluctuates, enabling the aluminum liquid casting to fill into every corner inside the mold cavity 1, and discharging the air before the molten metal fills to avoid the formation of cavities wrapped in the casting or depressions on the surface of the casting. While driving the mold cavity 1 to vibrate up and down, the connecting seat 23 will drive the connecting air inlet pipe 314 in the pressing block 312 to slide on the inner wall of the cylinder 313. Due to the function of the one-way valve 3141, every time the air inlet pipe 314 is pressed down, the one-way valve 3141 will be in the closed state. At this time, the air in the cylinder 313 will be squeezed into the air inlet pipe 314. Every time the air inlet pipe 314 rises, the one-way valve 3141 will be in the open state. At this time, new air will re-enter the cylinder 313. This process is repeated to conveniently squeeze the air in the cylinder 313 into the air inlet pipe 314 continuously. The air is injected into the cooling tank 32 through the injection pipe 3131 and pushes up the piston disc 321. When the piston disc 321 rises, it will extrude the coolant above the piston disc 321 in the cooling tank 32 out of the injection pipe 33. The coolant flows through the injection pipe 33, the shunt pipe 34 and the cooling pipe 35, and then discharges the coolant that has absorbed a large amount of heat from the drain pipe 36. When the coolant flows into the cooling pipe 35 through the shunt pipe 34, when the coolant flows through the cooling pipe 35, it will take away the heat at the bottom of the upper mold cavity 1 above. In the initial stage of pouring, the flowing cooling water will take away a large amount of heat of the molten metal, enabling the molten metal to quickly form a hard and thick solidified shell, evenly releasing the bottom stress and preventing cracks caused by stress concentration. In the subsequent stage, since heat will always be lost from below the molten metal, when the molten metal solidifies and shrinks, the subsequent injected molten metal will fill it.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid casting mechanism for aluminum alloy to improve surface quality, including a mold cavity (1), characterized in that: A vibration mechanism (2) is provided below the mold cavity (1). The vibration mechanism (2) includes a base (21). The base (21) is arranged below the mold cavity (1). Right-angle plates (22) are respectively connected to the four corners of the top of the base (21). The right-angle plates (22) are slidably connected to the outer wall of the mold cavity (1). A connecting seat (23) is connected to the bottom of the mold cavity (1). A vibration motor (24) is arranged at the bottom of the connecting seat (23). Support springs (25) are respectively connected between the connecting seat (23) and the base (21).

2. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 1, characterized in that: A pouring port (11) is connected to the top of the mold cavity (1). An exhaust hole (12) is connected to the top of the mold cavity (1) at a position to the left of the pouring port (11).

3. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 2, characterized in that: A cooling mechanism (3) is arranged on the back of the mold cavity (1). The cooling mechanism (3) includes cooling pipes (35). The cooling pipes (35) are connected inside the connecting seat (23) and are evenly distributed. The two ends of the cooling pipes (35) are respectively connected to a shunt pipe (34).

4. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 3, characterized in that: The cooling mechanism (3) further includes a cooling tank (32). The cooling tank (32) is arranged on the back of the mold cavity (1). A liquid injection pipe (33) is connected to the top of the cooling tank (32). The liquid injection pipe (33) is connected to the shunt pipe (34) on the back. The bottom of the shunt pipe (34) on the front is connected to a liquid discharge pipe (36).

5. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 4, characterized in that: Gas injection pipes (3131) are respectively connected to the bottoms of both sides of the cooling tank (32). An exhaust valve (3132) is connected to the gas injection pipes (3131). Gas injection assemblies (31) are respectively arranged on both sides of the base (21). The gas injection pipes (3131) are respectively connected to the gas injection assemblies (31) at corresponding positions.

6. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 5, characterized in that: A piston disk (321) is slidably connected to the inner wall of the cooling tank (32). A limiting column (322) is connected to the bottom of the piston disk (321).

7. A rapid casting mechanism for aluminum alloy to improve surface quality according to claim 6, characterized in that: The gas injection assembly (31) is composed of a connecting block (311), a pressing block (312), a cylinder (313), and an air inlet pipe (314). The connecting block (311) is connected to one side of the base (21). The pressing block (312) is connected to one side of the connecting seat (23). The cylinder (313) is on the top of the connecting base (21). The air inlet pipe (314) is slidably connected to the inner wall of the cylinder (313). The air inlet pipe (314) penetrates through the pressing block (312). A check valve (3141) is connected to the bottom of the inner wall of the air inlet pipe (314).

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