Extrusion casting device for forming aluminum-based composite material

Abstract

The extrusion casting device comprises a base, a conveying mechanism used for conveying molten aluminum is installed on the outer side of the base, a smelting furnace mechanism used for smelting raw materials of the aluminum-based composite material is arranged on the outer side of the base, and a mold mechanism is arranged on the outer side of a connecting plate. A pneumatic mechanism is mounted on the outer side of the base; through cooperation of an air extracting pump, a connecting valve, an air inlet groove and other components, preheating of a mold, impurity cleaning, casting pushing out and cooling of the casting and the mold are achieved, the air extracting pump is started to exhaust hot air of a smelting furnace into an air storage bag and then enter the air inlet groove, a push rod is pushed to move outwards to preheat the mold, and impurities are blown out; and after casting is completed, hot air is discharged to push the push rod to push out the casting and cool the casting, so that the thermal stress of the casting and the thermal fatigue of the mold are relieved, and the use performance of the mold and the quality of the casting are improved.

Description

Technical Field

[0001] The invention relates to the technical field of extrusion casting, in particular to an extrusion casting device for forming aluminum-based composite materials. Background Art

[0002] Squeeze casting, also known as liquid die forging, continuous casting and forging, is an emerging metal forming process that has both casting characteristics and is similar to die forging. It is to pour a certain amount of molten metal directly into a cavity coated with lubricant, and continuously apply mechanical static pressure, using the easy flow of metal casting solidification and forging technology to make the solidified hard shell plastically deformed, so that the metal crystallizes and solidifies under pressure and forcibly eliminates shrinkage cavities and shrinkage formed by solidification shrinkage, so as to obtain liquid die forging parts without casting defects.

[0003] At present, the extrusion casting of aluminum-based materials is usually performed by pouring molten aluminum into a casting mold through a pouring container, and then mechanically squeezing the aluminum in the mold through an external mechanical extrusion device to complete the casting operation. First, when the aluminum-based material is melted, it is difficult to speed up the discharge of impurities in the aluminum water. Secondly, if the mold preheating temperature is not enough, the fluidity of the liquid aluminum-based composite material will drop rapidly after being injected into the mold cavity, which may lead to incomplete filling. Finally, the existing cooling is water cooling or room temperature gas cooling of the mold and casting. On the one hand, the long-term and drastic changes in the mold temperature will lead to excessive thermal stress inside the casting. On the other hand, thermal stress is generated inside the mold, and long-term accumulation will lead to thermal fatigue.

[0004] To this end, an extrusion casting device for forming aluminum-based composite materials is proposed. Summary of the invention

[0005] The object of the present invention is to provide an extrusion casting device for forming aluminum-based composite materials to solve the problem of avoiding thermal stress of molds and castings proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an extrusion casting device for forming aluminum-based composite materials, comprising a base, three connecting plates are arranged on the base, the connecting plate in the middle is slidably connected to the base, the connecting plates on both sides are fixedly connected to the base, the connecting plate on one side is fixedly connected to a hydraulic press, wherein the output end of the hydraulic press is fixedly connected to the connecting plate in the middle, a conveying mechanism for conveying molten aluminum is installed on the outer side of the base, the conveying mechanism comprises a hydraulic assembly, the hydraulic assembly comprises a hydraulic rod, an oil storage tank and an oil pump, the output end of the hydraulic rod is fixedly connected to a push rod, a feed pipe is fixedly installed inside the connecting plate on the other side, and a gate is fixedly connected to the outer side of the connecting plate on the other side;

[0007] A furnace mechanism for melting aluminum-based composite material raw materials is arranged on the outer side of the base, and the furnace mechanism comprises a furnace body, and a limiting groove is arranged on the inner side of the furnace body, and a baffle is slidably connected to the inner side of the limiting groove, and the baffle is connected to the push rod through a connecting rod, and the aluminum-based composite material raw materials are placed on the top of the baffle;

[0008] A mold mechanism is arranged on the outer side of the connecting plate, and the mold mechanism comprises a movable mold and a fixed mold fixedly connected to the connecting plate;

[0009] A pneumatic mechanism is installed on the outer side of the base, and the pneumatic mechanism includes an air pump fixedly connected to the base, a connecting valve is fixedly connected to the top of the fixed mold, a closing port is provided inside the connecting valve, a sealing strip is installed at the opening of the closing port, a closing plate for cooperating with the closing port is fixedly installed on the top of the movable mold, an air inlet groove is provided inside the fixed mold, a spring is fixedly connected inside the air inlet groove, a push rod is fixedly connected to the outer side of the spring, a sealing block is fixedly connected inside the air inlet groove, the air inlet of the air pump is connected to the furnace body through a pipeline and a filter valve, and the air outlet of the air pump is connected to the connecting valve through a pipeline.

[0010] Preferably, an electromagnetic pump is fixedly installed on the top of the base, a feed hole of the electromagnetic pump is connected to the furnace body through a pipeline, and a discharge hole of the electromagnetic pump is connected to the gate through a pipeline.

[0011] Preferably: a discharge groove is provided on the outside of the furnace body, the discharge groove is connected to the limit groove, both sides of the bottom of the baffle are fixedly connected with a de-impurity plate and a blocking block for blocking the discharge groove, and a discharge hopper is fixedly connected to the outside of the furnace body, and the discharge hopper is located below the discharge groove.

[0012] Preferably: a vacuum pump is fixedly connected to the top of the connecting plate, an exhaust groove is provided inside the fixed mold, the air inlet of the vacuum pump is connected to the exhaust groove through a pipeline, the air outlet of the vacuum pump is connected to an external gas processing device through a pipeline, and a ceramic plate is fixedly connected to the inside of the exhaust groove.

[0013] Preferably, an air storage bag is fixedly connected to the top of the connecting valve, the air storage bag is connected to the air inlet groove through the connecting valve, and the air outlet of the air pump is connected to the air storage bag through a pipeline.

[0014] Preferably, the push rod has a shape of one thick section and one thin section, the thick section of the push rod is arranged to fit the inside of the air inlet groove, and the thin section of the push rod is arranged not to fit the inner wall of the sealing block.

[0015] Preferably, the push rod is slidably connected to the gate and the inside of the feed pipe, and a control valve is fixedly installed inside the feed pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, through the cooperation of the vacuum pump, the connecting valve, the air inlet groove and other components, the preheating of the mold, the cleaning of impurities, the pushing out of the casting and the cooling of the casting and the mold are achieved. The vacuum pump is started to discharge the hot air from the furnace into the air storage bag and then into the air inlet groove, pushing the push rod to move outward to preheat the mold and blow out impurities; after the mold is closed, the vacuum pump evacuates air to form a vacuum environment, which is conducive to the filling of aluminum water and the discharge of bubbles. After the casting is completed, the hot gas is discharged to push the push rod to push out the casting and cool it, which reduces the thermal stress of the casting and the thermal fatigue of the mold, and improves the mold performance and the casting quality.

[0018] 2. In the present invention, the baffle, limit groove and related structures in the furnace mechanism are used to effectively separate and control the space in the furnace. When the push rod moves, the baffle is inserted into the limit groove to form a closed space, and the vacuum pump extracts the gas to create a quasi-vacuum environment, which promotes the volatilization of hydrogen and low-boiling-point impurities in the molten aluminum, reduces the gas and impurity content, and thus effectively reduces the bubbles and impurities in the aluminum-based composite material after extrusion casting, thereby improving the quality of molten aluminum. At the same time, the furnace mechanism also has the functions of automatic feeding and impurity discharge. During the casting process, it will switch between a quasi-vacuum environment and a normal air pressure environment, so that the temperature of the molten aluminum is more uniform, effectively improving the stability of the casting quality.

[0019] 3. In the present invention, when demoulding and the movable mold moves outward, the vacuum pump maintains the vacuum in the mold cavity, so that there is almost no air pressure difference between the casting and the mold, which greatly reduces the friction and avoids scratches on the surface of the casting. After the movable mold is completely separated from the fixed mold, the closing plate is moved out, the baffle is opened, and the air storage bag is exhausted to push the push rod to push out the casting. The whole process is smooth and orderly, and the surface quality of the casting is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the mold opening state of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the present invention in the mold opening state;

[0022] Figure 3 It is a cross-sectional schematic diagram of the connecting plate, the fixed mold and the gate in the mold opening state of the present invention;

[0023] Figure 4 It is a cross-sectional schematic diagram of the connection plate, the fixed mold and the gate in the mold opening state of the present invention from another perspective;

[0024] Figure 5 It is a cross-sectional view of the furnace body in the mold opening state of the present invention;

[0025] Figure 6 It is a schematic diagram of the overall structure of the present invention in a molded state;

[0026] Figure 7 It is a cross-sectional schematic diagram of the connecting plate, the fixed mold and the gate in the mold closing state of the present invention;

[0027] Figure 8 It is a cross-sectional view of the furnace body in the mold closing state of the present invention;

[0028] Fig. 9 For the present invention Figure 3 A in the enlarged view;

[0029] Fig.10 For the present invention Figure 4 The enlarged view of point B in the figure;

[0030] Fig.11 For the present invention Figure 7 The enlarged view of point C in the figure;

[0031] Fig.12 For the present invention Fig. 9 Enlarged view of point D in .

[0032] In the figure:

[0033] 1. Base; 2. Hydraulic press;

[0034] 3. Pneumatic mechanism; 31. Air pump; 32. Connecting valve; 33. Closing port; 34. Closing plate; 35. Air storage bag; 36. Air inlet groove; 37. Sealing block; 38. Spring; 39. Push rod; 310. Vacuum pump; 311. Air extraction groove; 312. Ceramic plate;

[0035] 4. Connecting plate;

[0036] 5. Furnace mechanism; 51. Furnace body; 52. Limiting groove; 53. Discharge groove; 54. Discharge hopper; 55. Baffle;

[0037] 6. Conveying mechanism; 61. Hydraulic assembly; 62. Push rod; 63. Electromagnetic pump; 64. Gate; 65. Feed pipe; 66. Control valve;

[0038] 7. Mold mechanism; 71. Moving mold; 72. Fixed mold;

[0039] 8. Connecting rod; 9. Aluminum-based composite material raw material; 10. Filter valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 12 The present invention provides a technical solution for an extrusion casting device for forming aluminum-based composite materials:

[0042] An extrusion casting device for forming aluminum-based composite materials comprises a base 1, three connecting plates 4 are arranged on the base 1, the connecting plate 4 located in the middle is slidably connected to the base 1, the connecting plates 4 located on both sides are fixedly connected to the base 1, the connecting plate 4 on one side is fixedly connected to a hydraulic press 2, wherein the output end of the hydraulic press 2 is fixedly connected to the connecting plate 4 located in the middle, a conveying mechanism 6 for conveying molten aluminum is installed on the outer side of the base 1, the conveying mechanism 6 comprises a hydraulic assembly 61, the hydraulic assembly 61 comprises a hydraulic rod, an oil storage tank and an oil pump, a push rod 62 is fixedly connected to the output end of the hydraulic rod, a feed pipe 65 is fixedly installed inside the connecting plate 4 on the other side, and a gate 64 is fixedly connected to the outer side of the connecting plate 4 on the other side;

[0043] A furnace mechanism 5 for melting the aluminum-based composite material raw material 9 is arranged on the outer side of the base 1. The furnace mechanism 5 includes a furnace body 51. A limiting groove 52 is arranged on the inner side of the furnace body 51. A baffle 55 is slidably connected to the inner side of the limiting groove 52. The baffle 55 is connected to the push rod 62 through a connecting rod 8. The aluminum-based composite material raw material 9 is placed on the top of the baffle 55.

[0044] A mold mechanism 7 is provided on the outer side of the connecting plate 4, and the mold mechanism 7 includes a movable mold 71 and a fixed mold 72 fixedly connected to the connecting plate 4;

[0045] A pneumatic mechanism 3 is installed on the outer side of the base 1, and the pneumatic mechanism 3 includes an air pump 31 fixedly connected to the base 1, a connecting valve 32 is fixedly connected to the top of the fixed mold 72, a closing port 33 is provided inside the connecting valve 32, and a sealing strip is installed at the opening of the closing port 33, a closing plate 34 for cooperating with the closing port 33 is fixedly installed on the top of the movable mold 71, an air inlet groove 36 is provided inside the fixed mold 72, a spring 38 is fixedly connected inside the air inlet groove 36, a push rod 39 is fixedly connected to the outside of the spring 38, and a sealing block 37 is fixedly connected inside the air inlet groove 36, the air inlet of the air pump 31 is connected to the furnace body 51 through a pipeline and a filter valve 10, and the air outlet of the air pump 31 is connected to the connecting valve 32 through a pipeline.

[0046] As an embodiment of the present invention, Figure 1, Figure 3 and Fig.10 As shown, an electromagnetic pump 63 is fixedly installed on the top of the base 1, the feed hole of the electromagnetic pump 63 is connected to the furnace body 51 through a pipeline, the discharge hole of the electromagnetic pump 63 is connected to the gate 64 through a pipeline, the push rod 62 is slidably connected inside the gate 64 and the feed pipe 65, and a control valve 66 is fixedly installed inside the feed pipe 65.

[0047] During operation, when the movable mold 71 and the fixed mold 72 are closed, the electromagnetic pump 63 starts to introduce a certain amount of molten aluminum water in the furnace body 51 into the feed pipe 65 through the gate 64, and then the electromagnetic pump 63 is turned off. After the hydraulic component 61 is started, the aluminum water in the feed pipe 65 will be pushed into the mold cavity through the control valve 66.

[0048] As an embodiment of the present invention, Figure 1 , Figure 5 and Figure 8 As shown, a discharge groove 53 is provided on the outer side of the furnace body 51, and the discharge groove 53 is connected to the limiting groove 52. A de-impurity plate and a blocking block for blocking the discharge groove 53 are fixedly connected to both sides of the bottom of the baffle 55 respectively. A discharge hopper 54 is fixedly connected to the outer side of the furnace body 51, and the discharge hopper 54 is located below the discharge groove 53.

[0049] During operation, the aluminum-based composite material raw material 9 is first placed in the furnace body 51 for melting treatment to produce a certain amount of molten aluminum. The push rod 62 moves to drive the baffle 55 to insert into the limit groove 52, dividing the furnace body 51 into two upper and lower spaces. The lower space is a closed space for molten aluminum. The vacuum pump 31 sucks out the gas below to form a vacuum-like environment, reducing the gas and impurities in the molten aluminum, and then reducing the bubbles and impurities in the casting. Then the hydraulic press 2 pushes the connecting plate 4 to drive the moving mold 71 to move to complete the extrusion casting to form a casting. After the casting is completed, the hydraulic component 61 resets the push rod 62 and drives the baffle 55 to open, realizing automatic feeding and discharging impurities at the same time. The opening and closing of the baffle 55 changes the air pressure in the space below the furnace body 51, causing gas flow, promoting heat transfer, improving the temperature distribution of molten aluminum, and improving the stability of product quality.

[0050] As an embodiment of the present invention, Figure 1 , Figure 3 , Fig. 9 , Fig.11 and Fig.12As shown, a vacuum pump 310 is fixedly connected to the top of the connecting plate 4, an exhaust groove 311 is provided inside the fixed mold 72, the air inlet of the vacuum pump 310 is connected to the exhaust groove 311 through a pipeline, and the air outlet of the vacuum pump 310 is connected to the external gas processing equipment through the pipeline, and a ceramic plate 312 is fixedly connected to the inside of the exhaust groove 311, and a through hole is provided on the ceramic plate 312, which can allow gas molecules to enter and exit but can isolate aluminum molecules from entering and exiting, and an air storage bag 35 is fixedly connected to the top of the connecting valve 32, and the air storage bag 35 is connected to the air inlet groove 36 through the connecting valve 32, and the air outlet of the exhaust pump 31 is connected to the air storage bag 35 through a pipeline, and the outer shape of the push rod 39 adopts a thick section and a thin section setting, the thick section of the push rod 39 is arranged to fit the inside of the air inlet groove 36, and the thin section of the push rod 39 is not arranged to fit the inner wall of the sealing block 37.

[0051] When working, the vacuum pump 31 and the hydraulic press 2 are started: the baffle 55 is opened, the vacuum pump 31 discharges the hot air in the furnace body 51 into the air storage bag 35, and pushes the push rod 39 outward through the air inlet groove 36, and the hot air is discharged to the inside of the fixed mold 72 for preheating and blowing out impurities. At the same time, the hydraulic press 2 pushes the connecting plate 4 to close the movable mold 71 and the fixed mold 72, and the closing plate 34 blocks the connecting valve 32, and the hot gas is stored in the air storage bag 35;

[0052] Operation after mold closing: start the vacuum pump 310, electromagnetic pump 63 and hydraulic assembly 61 in sequence. The vacuum pump 310 extracts the air in the mold cavity to form a vacuum environment. The electromagnetic pump 63 introduces molten aluminum. The hydraulic assembly 61 pushes the molten aluminum into the mold cavity. The vacuum environment allows the molten aluminum to quickly fill the mold cavity and suck out the bubbles. The ceramic plate 312 ensures that the gas is discharged but the molten aluminum is not discharged.

[0053] After the extrusion casting is completed: the hydraulic press 2 drives the movable mold 71 to move outward. When demolding, the mold cavity maintains a vacuum to reduce the friction between the casting and the mold to avoid scratches. After the movable mold 71 is completely separated from the fixed mold 72, the closing plate 34 is pulled out, the baffle 55 is opened, the vacuum pump 31 extracts the hot air from the furnace, the air storage bag 35 resets and exhausts the push rod 39 to push the casting out. The hot air cools the fixed mold 72 and the casting, slowing down the temperature change of the casting, thermal stress and temperature difference of the fixed mold 72, and avoiding thermal fatigue of the fixed mold 72.

[0054] Working principle: When working, firstly, the aluminum-based composite material raw material 9 is placed inside the furnace body 51, and the aluminum-based composite material raw material 9 is melted to melt a certain amount of aluminum liquid inside the furnace body 51;

[0055] When squeeze casting is required, the vacuum pump 31 is started first and then the hydraulic press 2 is started. Since the baffle 55 is in the open state at this time, Figure 1As shown, after the vacuum pump 31 is started, the hotter gas inside the furnace body 51 will be sucked in and discharged into the interior of the air storage bag 35 through the pipeline. Since the air storage bag 35 is connected to the air inlet groove 36 through the connecting valve 32, and a sealing strip is installed at the opening of the closing port 33, the hotter gas will push the push rod 39 to move outward through the air inlet groove 36 until the thicker section on the push rod 39 moves out from the interior of the air inlet groove 36. At this time, the gas will be discharged to the inner side of the fixed mold 72 through the air inlet groove 36, which can preheat the fixed mold 72 on the one hand and blow out impurities inside the fixed mold 72 on the other hand. At the same time, the middle connecting plate 4 is pushed to move through the output end of the hydraulic press 2, so that the movable mold 71 and the fixed mold 72 are molded together. At this time, the closing plate 34 on the movable mold 71 will pass through the sealing strip and be inserted into the interior of the closing port 33, thereby blocking the connecting valve 32, and the hotter gas will no longer enter the interior of the air inlet groove 36, and the hotter gas will be stored in the air storage bag 35.

[0056] When the movable mold 71 and the fixed mold 72 are molded together, the vacuum pump 310, the electromagnetic pump 63 and the hydraulic assembly 61 are started in sequence. After the vacuum pump 310 is started, the air inside the mold cavity formed by the movable mold 71 and the fixed mold 72 are extracted through the exhaust groove 311, so that a vacuum environment is formed inside the mold cavity. After the electromagnetic pump 63 is started, a certain amount of molten aluminum water in the furnace body 51 is introduced into the feed pipe 65 through the gate 64. Then the electromagnetic pump 63 is turned off. After the hydraulic assembly 61 is started, the aluminum water in the feed pipe 65 is pumped out through the exhaust groove 311. The control valve 66 is pushed into the mold cavity. Since the mold cavity is in a vacuum environment, the molten aluminum that enters the mold cavity will quickly fill all positions of the mold cavity. At the same time, the vacuum environment in the mold cavity will quickly suck out the bubbles in the molten aluminum and discharge them through the vacuum groove 311. Since the vacuum groove 311 is provided with a ceramic plate 312 (a through hole is provided on the ceramic plate 312, which allows gas molecules to enter and exit but isolates aluminum molecules from entering and exiting), the gas will be discharged through the vacuum groove 311 while the molten aluminum will not be discharged through the vacuum groove 311.

[0057] When the push rod 62 moves, the baffle 55 will be driven to move through the connecting rod 8, and when the push rod 62 moves to the specified position, the baffle 55 will be fully inserted into the limit groove 52, thereby dividing the furnace body 51 into two spaces, the lower space is molten aluminum water, and the upper space can be placed in the aluminum-based composite material raw material 9 to be melted, and the lower space is a completely closed space. At this time, the vacuum pump 31 will suck out the gas in the space below the furnace body 51, so that the space below the furnace body 51 forms a quasi-vacuum environment. The quasi-vacuum environment helps the hydrogen and low-boiling impurities in the aluminum water to volatilize, thereby effectively reducing the gas and impurities in the aluminum water, and then reducing the bubbles and impurities in the aluminum-based composite material after extrusion casting;

[0058] Then the hydraulic press 2 will continue to push the connecting plate 4 to drive the movable die 71 to move to the specified position, thereby completing the extrusion casting of the aluminum-based composite material and finally forming a casting;

[0059] After the extrusion casting is completed, the movable mold 71 is first driven to move outward by the hydraulic press 2. When the movable mold 71 moves outward to be completely separated from the fixed mold 72, the vacuum pump 310 is turned off, and the hydraulic component 61 drives the push rod 62 to reset. After the push rod 62 is reset, the baffle 55 is driven to open through the connecting rod 8. The mold cavity formed by the movable mold 71 and the fixed mold 72 is always in a vacuum environment. Since the casting will form a vacuum environment with the inner wall of the mold during extrusion casting, when the mold cavity is in a vacuum environment, there is almost no air pressure difference between the casting and the mold, thereby reducing the friction between the casting and the mold, thereby avoiding scratches on the surface of the casting during demolding. When the movable mold 71 is completely separated from the fixed mold 72, the closing plate 34 will also be pulled out from the inside of the closing port 33, and after the baffle 55 is opened, the vacuum pump 31 can extract more hot air from the furnace body 51. At this time, the air storage bag 35 is connected to the air inlet groove 36 through the connecting valve 32. The air storage bag 35 quickly resets to quickly discharge the air stored inside through the air inlet groove 36. The gas will push the push rod 39 to move. After the push rod 39 moves, the casting inside the fixed mold 72 is pushed out. At the same time, the hot air will cool the fixed mold 72 and the casting. The hot air that cools the casting can slow down the temperature change of the casting, thereby reducing the thermal stress inside the casting, and at the same time slow down the temperature difference of the fixed mold 72 to avoid thermal fatigue of the fixed mold 72 (because the temperature of the gas in the furnace body 51 is transferred from the aluminum liquid, and the baffle 55 is in the process of opening and closing, the temperature of the hot air inside the furnace body 51 is lower than the temperature of the aluminum liquid. At the same time, the hot air is extracted and transferred by the vacuum pump 31, so the temperature of the hot air blown into the fixed mold 72 will be further cooled, so the hot air can be used for cooling);

[0060] When the baffle 55 is opened, the aluminum-based composite material raw material 9 above the baffle 55 will fall into the space below the furnace body 51, thereby realizing automatic feeding, and the blocking block at the bottom will be separated from the discharge groove 53, and the impurity removal plate will scrape off the impurities precipitated above the aluminum liquid in the furnace body 51, and discharge them through the discharge groove 53 and the discharge hopper 54. At the same time, since the baffle 55 is in an open state and a closed state at the same time, the space below the furnace body 51 is in a quasi-vacuum state and a normal air pressure state at the same time. This state will cause the flow of gas in the furnace body 51, which can promote heat transfer. When the furnace is evacuated, the flow direction of the gas in the furnace will change, the hot gas will be extracted, and the surrounding colder gas will be supplemented, so that the temperature of the aluminum liquid will be more uniform. When the air is taken in, the incoming gas will also generate convection in the furnace, further improving the temperature distribution in the aluminum liquid, which is beneficial to improving the stability of product quality.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion casting device for forming aluminum-based composite materials, comprising a base (1), wherein three connecting plates (4) are arranged on the base (1), wherein the connecting plate (4) located in the middle is slidably connected to the base (1), and the connecting plates (4) located on both sides are fixedly connected to the base (1), and the connecting plate (4) on one side is fixedly connected to a hydraulic press (2), wherein the output end of the hydraulic press (2) is fixedly connected to the connecting plate (4) located in the middle, and characterized in that: A conveying mechanism (6) for conveying molten aluminum is installed on the outer side of the base (1), and the conveying mechanism (6) includes a hydraulic component (61), and the hydraulic component (61) includes a hydraulic rod, an oil storage tank and an oil pump. The output end of the hydraulic rod is fixedly connected to a push rod (62), and a feed pipe (65) is fixedly installed inside the connecting plate (4) on the other side, and a gate (64) is fixedly connected to the outer side of the connecting plate (4) on the other side; A furnace mechanism (5) for melting the aluminum-based composite material raw material (9) is arranged on the outer side of the base (1), the furnace mechanism (5) comprising a furnace body (51), a limiting groove (52) is arranged on the inner side of the furnace body (51), a baffle (55) is slidably connected to the inner side of the limiting groove (52), the baffle (55) is connected to the push rod (62) via a connecting rod (8), and the aluminum-based composite material raw material (9) is placed on the top of the baffle (55); A mold mechanism (7) is arranged on the outer side of the connecting plate (4), and the mold mechanism (7) comprises a movable mold (71) and a fixed mold (72) fixedly connected to the connecting plate (4); A pneumatic mechanism (3) is installed on the outer side of the base (1), and the pneumatic mechanism (3) includes an air pump (31) fixedly connected to the base (1); a connecting valve (32) is fixedly connected to the top of the fixed mold (72); a closed port (33) is provided inside the connecting valve (32); a sealing strip is installed at the opening of the closed port (33); a closing plate (34) for use with the closed port (33) is fixedly installed on the top of the movable mold (71); An air inlet groove (36) is provided inside the fixed mold (72), a spring (38) is fixedly connected inside the air inlet groove (36), a push rod (39) is fixedly connected to the outside of the spring (38), a sealing block (37) is fixedly connected inside the air inlet groove (36), an air inlet of the vacuum pump (31) is connected to the furnace body (51) through a pipeline and a filter valve (10), and an air outlet of the vacuum pump (31) is connected to the connecting valve (32) through a pipeline.

2. The extrusion casting device for forming aluminum-based composite materials according to claim 1, characterized in that: An electromagnetic pump (63) is fixedly installed on the top of the base (1), and the feed hole of the electromagnetic pump (63) is connected to the furnace body (51) through a pipeline, and the discharge hole of the electromagnetic pump (63) is connected to the gate (64) through a pipeline.

3. The extrusion casting device for forming aluminum-based composite materials according to claim 1, characterized in that: A discharge groove (53) is provided on the outer side of the furnace body (51), and the discharge groove (53) is communicated with the limiting groove (52). A de-impurity plate and a blocking block for blocking the discharge groove (53) are fixedly connected on both sides of the bottom of the baffle (55), respectively. A discharge hopper (54) is fixedly connected to the outer side of the furnace body (51), and the discharge hopper (54) is located below the discharge groove (53).

4. The extrusion casting device for forming aluminum-based composite materials according to claim 1, characterized in that: A vacuum pump (310) is fixedly connected to the top of the connecting plate (4), an exhaust groove (311) is provided inside the fixed mold (72), an air inlet of the vacuum pump (310) is connected to the exhaust groove (311) through a pipeline, an air outlet of the vacuum pump (310) is connected to an external gas processing device through a pipeline, and a ceramic plate (312) is fixedly connected to the inside of the exhaust groove (311).

5. The extrusion casting device for forming aluminum-based composite materials according to claim 4, characterized in that: An air storage bag (35) is fixedly connected to the top of the connecting valve (32); the air storage bag (35) is connected to the air inlet groove (36) through the connecting valve (32); and the air outlet of the air pump (31) is connected to the air storage bag (35) through a pipeline.

6. The extrusion casting device for forming aluminum-based composite materials according to claim 1, characterized in that: The push rod (39) has a thick section and a thin section. The thick section of the push rod (39) is arranged to fit the inside of the air inlet groove (36), and the thin section of the push rod (39) is not arranged to fit the inner wall of the sealing block (37).

7. The extrusion casting device for forming aluminum-based composite materials according to claim 2, characterized in that: The push rod (62) is slidably connected to the inside of the gate (64) and the feed pipe (65), and a control valve (66) is fixedly installed inside the feed pipe (65).

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