Aluminum alloy die-casting device

Abstract

The invention discloses an aluminum alloy die-casting device and relates to the technical field of aluminum alloy die-casting, the aluminum alloy die-casting device comprises a supporting frame, linear motors are fixedly connected to the left end and the right end of the upper portion of the supporting frame, telescopic air cylinders are fixedly connected to the output ends of the linear motors, and electric clamping jaws are fixedly connected to the output ends of the telescopic air cylinders; a casting mold is arranged in the electric clamping jaw, a mold cavity is formed in the casting mold, a condensation channel is additionally formed in the casting mold, a round barrel is arranged below the casting mold, a crucible is arranged in the round barrel, a cover plate is arranged above the round barrel, the cover plate is in threaded connection with the round barrel, a liquid inlet pipe is arranged below the casting mold, and a liquid outlet pipe is arranged below the liquid inlet pipe. The liquid inlet pipe penetrates through the cover plate and is fixedly connected with the cover plate, a plurality of air inlets are additionally formed in the cover plate, the air inlets are communicated with an air pump through pipelines, the air pump is fixedly connected to the cover plate, and a control machine is arranged on one side of the supporting frame.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy die casting, and specifically to an aluminum alloy die casting device. Background Art

[0002] Die casting is a metal casting process, characterized by applying high pressure to the molten metal using the inner cavity of the mold. The mold is usually processed from an alloy with higher strength, and this process is somewhat similar to injection molding.

[0003] The existing die casting exhaust method is to set exhaust grooves at the end of the overflow groove (slag trap). The thickness of the exhaust groove gradually thins. Because it is simple, this method is commonly used. However, the disadvantages are that once the exhaust groove is blocked, the exhaust effect is affected. Second, there is a concentrated exhaust block. A concentrated exhaust block similar to a washboard is set at the place where the casting entraps air for exhaust. The exhaust block is provided with a cooling water channel to cool the incoming molten metal. This method is now widely used for more complex molds. Most rely on mold flow analysis software to determine the position and quantity of the exhaust blocks, and it is also used in conjunction with the exhaust groove. This method is more troublesome and not applicable to all molds.

[0004] Therefore, it is necessary to design an aluminum alloy die casting device that improves die casting quality and reduces the generation of pores. Summary of the Invention

[0005] The purpose of the present invention is to provide an aluminum alloy die casting device to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: An aluminum alloy die casting device includes a support frame. Linear motors are fixedly connected above the left and right ends of the support frame. The output ends of the linear motors are fixedly connected with telescopic cylinders. The output ends of the telescopic cylinders are fixedly connected with electric grippers. A mold is arranged inside the electric grippers. A cavity is opened inside the mold. A condensation channel is also opened inside the mold. A round barrel is arranged below the mold. A crucible is arranged inside the round barrel. A cover plate is arranged above the round barrel. The cover plate is screwed to the round barrel. A liquid inlet pipe is arranged below the mold. The liquid inlet pipe penetrates through the cover plate and is fixedly connected with the cover plate. A plurality of air inlets are also opened on the cover plate. The air inlets are connected to an air pump through pipes. The air pump is fixedly connected to the cover plate. A control machine is arranged on one side of the support frame.

[0007] According to the above technical solution, a lifting placement table is arranged inside the support frame. A water tank is fixedly connected above the left side of the support frame. A water pump is arranged on one side of the water tank. The water pump is fixedly connected above the support frame. The input end of the water pump is connected to the water tank through pipes. The output end of the water pump is connected to the input end of the condensation channel through pipes. The output end of the condensation channel is connected to the water tank through pipes.

[0008] According to the above technical solution, an annular protrusion is provided at the input end port of the cavity, an annular groove is provided at the output end of the liquid inlet pipe, and the annular protrusion is matched with the annular groove to make the liquid inlet pipe be hermetically connected to the casting mold.

[0009] According to the above technical solution, an air pipe is connected to the liquid inlet pipe, the other end of the air pipe is connected to a vacuum pump, and the vacuum pump is fixedly connected to the cover plate.

[0010] According to the above technical solution, the input end of the liquid inlet pipe is located inside the crucible, a control valve I is fixedly connected to the input end port, a control valve II is fixedly connected to the input port of the air pipe, and a flow control valve is fixedly connected to the part of the liquid inlet pipe connecting the input end of the cavity.

[0011] According to the above technical solution, a return pipe is connected to the liquid inlet pipe, a plurality of groups of heating sleeves are fixedly connected to both the return pipe and the liquid inlet pipe, and a heating plate is fixedly connected to the inner wall of the round barrel.

[0012] According to the above technical solution, a bubble sensor is fixedly connected to the junction of the return pipe and the liquid inlet pipe, a control valve III is fixedly connected to the return pipe, and the control valve III is located on the right side of the bubble sensor.

[0013] According to the above technical solution, a temperature sensor is fixedly connected to the liquid inlet pipe, and the temperature sensor is located on one side of the control valve I.

[0014] According to the above technical solution, the linear motor, the telescopic cylinder, the electric gripper, the vacuum pump, the elevator, the air pump, the control valve I, the control valve II, the flow control valve, the heating sleeve, the heating plate, the bubble sensor, and the temperature sensor are all signal-connected to the control machine.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0016] By providing heating sleeves to heat the liquid inlet pipe and the return pipe, the aluminum alloy solidified in the pipeline is remelted, achieving the beneficial effect of preventing pipeline blockage;

[0017] By providing a temperature sensor to detect whether the temperature of the aluminum alloy liquid meets the die-casting conditions, and if the temperature is lower than the die-casting temperature, heating treatment can be performed through the heating plate, achieving the function of adjusting the die-casting temperature;

[0018] By providing a bubble sensor to detect bubbles in the aluminum alloy liquid, if the bubble content in the aluminum alloy liquid is high and does not meet the die-casting conditions, the aluminum alloy liquid is controlled to flow back through the return pipe, and pressure is applied through the air pump to squeeze out the bubbles in the aluminum alloy liquid, achieving the beneficial effect of detecting and treating the bubble content in the aluminum alloy liquid. Description of the Drawings

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall front sectional structure of the present invention;

[0021] Figure 2 is of the present invention Figure 1 a partially enlarged schematic diagram of area A;

[0022] Figure 3 is a schematic diagram of the side structure of the present invention;

[0023] Figure 4 is of the present invention Figure 3 a partially enlarged schematic diagram of area B;

[0024] Figure 5 is of the present invention Figure 3 a partially enlarged schematic diagram of area C;

[0025] In the figures: 1, support frame; 2, linear motor; 3, telescopic cylinder; 4, electric gripper; 5, lifting placement table; 6, mold; 7, cavity; 8, condensation channel; 9, water tank; 10, water pump; 11, annular protrusion; 12, liquid inlet pipe; 13, annular groove; 14, air pipe; 15, vacuum pump; 16, barrel; 17, crucible; 18, cover plate; 19, elevator; 20, air inlet; 21, air pump; 22, control valve I; 23, control valve II; 24, flow control valve; 25, control machine; 26, heating jacket; 27, return pipe; 28, bubble sensor; 29, control valve III; 30, temperature sensor; 31, heating plate. Detailed Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1, please refer to Figures 1-5, the present invention provides a technical solution: an aluminum alloy die-casting device, including a support frame 1. At both the left and right ends above the support frame 1, linear motors 2 are fixedly connected. The output ends of the linear motors 2 are fixedly connected with telescopic cylinders 3. The output ends of the telescopic cylinders 3 are fixedly connected with electric grippers 4. A mold 6 is arranged inside the electric grippers 4. The output ends of the telescopic cylinders 3 extend to clamp the mold 6 by the electric grippers 4. An elevating placement table 5 is arranged inside the support frame 1 for placing the aluminum alloy die-castings after die-casting is completed;

[0028] A cavity 7 is opened inside the mold 6 for die-casting aluminum alloy. Another condensation channel 8 is opened inside the mold 6 for cooling the die-cast aluminum alloy. A water tank 9 is fixedly connected above the left side of the support frame 1. A water pump 10 is arranged on one side of the water tank 9. The water pump 10 is fixedly connected above the support frame 1. The input end of the water pump 10 is connected to the water tank 9 through a pipeline. The output end of the water pump 10 is connected to the input end of the condensation channel 8 through a pipeline. The output end of the condensation channel 8 is connected to the water tank 9 through a pipeline;

[0029] A round barrel 16 is arranged below the mold 6. A crucible 17 is arranged inside the round barrel 16 for containing aluminum alloy liquid. A cover plate 18 is arranged above the round barrel 16. The cover plate 18 is screwed to the round barrel 16. An elevator 19 is arranged below the round barrel 16 for controlling the lifting of the round barrel 16. An annular protrusion 11 is arranged at the input end port of the cavity 7. An inlet pipe 12 is arranged below the mold 6. An annular groove 13 is opened at the output end of the inlet pipe 12. The annular protrusion 11 cooperates with the annular groove 13 to make the inlet pipe 12 be hermetically connected to the mold 6. An air pipe 14 is connected to the inlet pipe 12. The other end of the air pipe 14 is connected to a vacuum pump 15. The vacuum pump 15 is fixedly connected to the cover plate 18 for pumping out the air inside the cavity 7 to keep the inside of the cavity 7 in a vacuum state, ensuring that the die-cast aluminum alloy will not produce pores. The inlet pipe 12 penetrates through the cover plate 18 and is fixedly connected to the cover plate 18. Several air inlets 20 are opened on the cover plate 18. The air inlets 20 are connected to an air pump 21 through a pipeline for conveying inert gas into the round barrel 16. The inert gas is insoluble in the aluminum alloy liquid, increasing the air pressure inside the round barrel 16 and squeezing the aluminum alloy liquid into the cavity 7 through the inlet pipe 12. The air pump 21 is fixedly connected to the cover plate 18. The input end of the inlet pipe 12 is located inside the crucible 17, and a control valve one 22 is fixedly connected to the input end port for controlling the inflow of the aluminum alloy liquid. A control valve two 23 is fixedly connected to the input port of the air pipe 14 to control the closing of the air pipe 14, preventing the aluminum alloy liquid from entering the air pipe 14 when inputting the aluminum alloy liquid. A flow control valve 24 is fixedly connected to the part of the inlet pipe 12 connecting to the input end of the cavity 7 to control the flow rate of the aluminum alloy liquid when entering the cavity 7, preventing the quality of the die-cast aluminum alloy casting from being affected by an excessive or insufficient amount of aluminum alloy liquid;

[0030] On one side of the support frame 1, a control machine 25 is provided. The linear motor 2, telescopic cylinder 3, electric gripper 4, vacuum pump 15, elevator 19, air pump 21, control valve I 22, control valve II 23, and flow control valve 24 are all signal-connected to the control machine 25.

[0031] In this embodiment, the crucible 17 containing aluminum alloy liquid is placed in the round barrel 16, the cover plate 18 is screwed on, the linear motor 2 is started to move, so that the cavity 7 is located directly above the crucible 17, the elevator 19 is started to rise, the annular groove 13 of the liquid inlet pipe 12 is sleeved on the annular protrusion 11, so that the liquid inlet pipe 12 is communicated with the cavity 7 to make the cavity 7 form a sealed state. The vacuum pump 15 is started. At this time, the flow control valve 24 is opened and the control valve I 22 is closed. The vacuum pump 15 extracts the air in the cavity 7 and the liquid inlet pipe 12 through the air pipe 14, so that the cavity 7 and the liquid inlet pipe 12 are in a vacuum state. At this time, the control valve II 23 and the flow control valve 24 are closed, and at the same time the control valve I 22 is opened. The air pump 21 is started. The air pump 21 extracts inert gas and sends it into the round barrel 16, increasing the air pressure in the round barrel 16 and pressing the aluminum alloy liquid into the liquid inlet pipe 12. Then the flow control valve 24 is opened, and the aluminum alloy liquid enters the cavity 7 and fills the cavity 7. The water pump 10 is started. The water pump 10 sucks the water in the water tank 9 into the condensation channel 8 to cool and form the aluminum alloy liquid in the cavity 7. After cooling is completed, the water pump 10 stops running. The air pump 21 runs in the reverse direction to make the air pressure in the round barrel 16 return to normal. The uncooled aluminum alloy liquid in the liquid inlet pipe 12 flows back to the crucible 17. The condensed casting mold 6 is moved to the lifting placement table 5 on one side by the linear motor 2. The telescopic cylinder 3 is controlled to retract, and the electric gripper 4 opens with the casting mold 6, so that the die-casting part falls on the lifting placement table 5. After the die-casting part is taken away manually, the telescopic cylinder 3 extends, the electric gripper 4 closes with the separated casting mold 6 together, and the linear motor 2 brings the casting mold 6 back to the original position to start the next die-casting.

[0032] Embodiment 2, the following structure is added on the basis of Embodiment 1:

[0033] The liquid inlet pipe 12 is connected to a reflux pipe 27. Several groups of heating sleeves 26 are fixedly connected to the reflux pipe 27 and the liquid inlet pipe 12 for heating the pipe to melt the aluminum alloy solidified in the pipe to prevent the pipe from being blocked and affecting the next use. A bubble sensor 28 is fixedly connected to the junction of the reflux pipe 27 and the liquid inlet pipe 12. Through the strong penetration of ultrasound, there are obvious interface reflection and refraction phenomena in the liquid column and the solid. At the same time, it has the high-frequency characteristics of ultrasound, which is convenient for counting actual pulses and ultrasonic pulses to determine the size and number of bubbles. A control valve three 29 is fixedly connected to the reflux pipe 27. The control valve three 29 is located on the right side of the bubble sensor 28 and is used to control the opening and closing of the reflux pipe 27. A temperature sensor 30 is fixedly connected to the liquid inlet pipe 12. The temperature sensor 30 is located on one side of the control valve one 22 and is used to measure whether the temperature of the aluminum alloy liquid before entering the cavity 7 meets the requirements of die casting. A heating plate 31 is fixedly connected to the inner wall of the barrel 16 for heating the aluminum alloy liquid in the crucible 17.

[0034] In this embodiment, after the aluminum alloy liquid enters the liquid inlet pipe 12, the temperature of the aluminum alloy liquid is detected by the temperature sensor 30. When the temperature of the aluminum alloy liquid is lower than the temperature required for die casting, the control valve 3 29 is opened to allow the aluminum alloy liquid in the liquid inlet pipe 12 to flow into the crucible 17 through the reflux pipe 27, and the heating plate 31 is controlled to heat so that the temperature of the aluminum alloy liquid meets the die casting requirements;

[0035] When the temperature of the aluminum alloy liquid is higher than the temperature required for die casting, the control valve 3 29 is also opened to allow the aluminum alloy liquid to flow back into the crucible 17, and wait for the aluminum alloy liquid to cool naturally to a suitable temperature;

[0036] When the bubble sensor 28 detects that the aluminum alloy liquid contains a large amount of bubbles, it is not suitable for die casting. At this time, the control valve 3 29 is opened to allow the liquid to flow back into the crucible 17. At the same time, the operating power of the air pump 21 is increased to increase the air pressure in the barrel 16, so that the bubbles in the aluminum alloy liquid are pressed out.

[0037] When the die casting is completed, the heating jacket 26 is controlled to heat the liquid inlet pipe 12, so that the solidified aluminum alloy in the liquid inlet pipe 12 melts and flows back into the crucible 17 to prevent the liquid inlet pipe 12, the air pipe 14 and the reflux pipe 27 from being blocked;

[0038] When the bubble sensor 28 detects that the gas in the reflux pipe 27 increases, it indicates that the aluminum alloy liquid in the crucible 17 has been used up, and the control machine 25 prompts the personnel to refill the aluminum alloy liquid.

[0039] It should be noted that in this text, 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 "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aluminum alloy die-casting device, comprising a support frame (1), characterized in that: The left and right ends of the upper part of the support frame (1) are fixedly connected to linear motors (2), the output ends of the linear motors (2) are fixedly connected to telescopic cylinders (3), the output ends of the telescopic cylinders (3) are fixedly connected to electric clamps (4), a casting mold (6) is arranged in the electric clamps (4), a cavity (7) is provided in the casting mold (6), a condensation channel (8) is further provided in the casting mold (6), a round barrel (16) is arranged below the casting mold (6), a crucible (17) is arranged in the round barrel (16), A cover plate (18) is arranged above the barrel (16), and the cover plate (18) is screwed to the barrel (16). A liquid inlet pipe (12) is arranged below the casting mold (6), and the liquid inlet pipe (12) passes through the cover plate (18) and is fixedly connected to the cover plate (18). A plurality of air inlets (20) are also opened on the cover plate (18), and the air inlet pipes (20) are connected to an air pump (21), and the air pump (21) is fixedly connected to the cover plate (18). A control machine (25) is arranged on one side of the support frame (1).

2. The aluminum alloy die-casting device according to claim 1, characterized in that: A lifting platform (5) is arranged inside the support frame (1); a water tank (9) is fixedly connected to the upper left side of the support frame (1); a water pump (10) is arranged on one side of the water tank (9); the water pump (10) is fixedly connected to the upper part of the support frame (1); a pipeline of the water tank (9) is connected to the input end of the water pump (10); an output end pipeline of the water pump (10) is connected to the input end of the condensation channel (8); and an output end pipeline of the condensation channel (8) is connected to the water tank (9).

3. The aluminum alloy die-casting device according to claim 1, characterized in that: The input port of the mold cavity (7) is provided with an annular protrusion (11), and the output end of the liquid inlet pipe (12) is provided with an annular groove (13). The annular protrusion (11) cooperates with the annular groove (13) to achieve a sealing connection between the liquid inlet pipe (12) and the casting mold (6).

4. The aluminum alloy die-casting device according to claim 3, characterized in that: The liquid inlet pipe (12) is connected to an air pipe (14), the other end of the air pipe (14) is connected to a vacuum pump (15), and the vacuum pump (15) is fixedly connected to the cover plate (18).

5. The aluminum alloy die-casting device according to claim 4, characterized in that: The input end of the liquid inlet pipe (12) is located in the crucible (17), and the input end port is fixedly connected to a control valve 1 (22), the input port of the air pipe (14) is fixedly connected to a control valve 2 (23), and the portion of the liquid inlet pipe (12) connected to the input end of the cavity (7) is fixedly connected to a flow control valve (24).

6. The aluminum alloy die-casting device according to claim 5, characterized in that: The liquid inlet pipe (12) is connected to a return pipe (27), and the return pipe (27) and the liquid inlet pipe (12) are fixedly connected to a plurality of groups of heating sleeves (26), and the inner wall of the barrel (16) is fixedly connected to a heating plate (31).

7. The aluminum alloy die-casting device according to claim 6, characterized in that: A bubble sensor (28) is fixedly connected at the junction of the return pipe (27) and the liquid inlet pipe (12), and a control valve three (29) is fixedly connected to the return pipe (27). The control valve three (29) is located on the right side of the bubble sensor (28).

8. The aluminum alloy die-casting device according to claim 7, characterized in that: A temperature sensor (30) is fixedly connected to the liquid inlet pipe (12), and the temperature sensor (30) is located on one side of the control valve (22).

9. The aluminum alloy die-casting device according to claim 8, characterized in that: The linear motor (2), telescopic cylinder (3), electric gripper (4), vacuum pump (15), lifter (19), air pump (21), control valve 1 (22), control valve 2 (23), flow control valve (24), heating sleeve (26), heating plate (31), bubble sensor (28), and temperature sensor (30) are all connected to the control machine (25) by signals.

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