Die casting method of aluminum alloy housing die casting

Abstract

The present invention discloses a die-casting method for aluminum alloy shell die-castings. The present invention comprises a mounting frame, the inner wall of the mounting frame is slidably connected with a transmission column driven to rise and fall by a power mechanism, the lower surface of the transmission column is fixedly connected with a fixed disk, the lower surface of the fixed disk close to the edge is fixedly connected with four limit rods, the four limit rods are movably connected with the same disk, the lower surface of the disk is fixedly connected with an upper mold, the inner bottom wall of the mounting frame is fixedly connected with a liquid supply mechanism, a layer plate fixed on the inner wall of the mounting frame is arranged above the liquid supply mechanism, and the upper surface of the layer plate is fixedly connected with a mold matched with the upper mold. The torsion spring and the rotating rod arranged between the opposite surfaces of the disk and the fixed disk are used to achieve the effect of rapid separation of the upper mold and the die-casting, and the movable disk is slid up and down to enter and store the release agent.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy die-casting, and in particular to a die-casting forming method for an aluminum alloy housing die-casting. Background Art

[0002] When die-casting the alloy shell, the aluminum alloy is heated to melt the aluminum metal into liquid aluminum, which is then poured into the mold of the die-casting machine for die-casting and cooling. The operating process and problem-solving steps for die-casting and cooling the aluminum alloy are the die-casting method.

[0003] In conventional aluminum alloy die casting methods, two sets of upper and lower or left and right molds are usually used. First, the metal solution is poured into the mold, and then the die casting is closed and die-cast. Finally, the die casting is cooled and demolded and the die casting is taken out. For example, CN113399641A is a high-density die-casting method for aluminum alloy die castings and CN101905305B is a die-casting method for aluminum alloy housing die castings. The waiting time is long during the process of liquid injection, die casting and demolding. Therefore, this application proposes a die-casting method for aluminum alloy housing die castings. Summary of the invention

[0004] The object of the present invention is to provide a die-casting method for an aluminum alloy housing die-casting, which has the advantages of a series of continuous operations of liquid filling, die-casting and demoulding for the die-casting and better efficiency, and solves the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] S1. Downward pressure inflation: In the initial state, the transmission column is at the highest position. Driven by the power mechanism, the transmission column drives the transmission rod to move downward, and the other end of the transmission rod is fixedly connected to a gas plug. At the same time, the inert gas inside the gas cylinder is squeezed downward by the gas plug, passes through the one-way air guide valve A and the air inlet pipe into the crucible furnace. There is a temporarily stored metal solution inside the crucible furnace. The inert gas is on the surface of the metal solution, increasing the pressure of the liquid surface, and the metal solution will enter the mold from bottom to top through the runner;

[0007] S2, Rotational die casting: Driven by the power mechanism, the transmission column drives the fixed plate, and the fixed plate drives the sliding rod, the sliding rod drives the disc and drives the upper die downward for die casting. When the upper die and the mold are die-casting, the torsion spring is in a contracted state under the pressure, and the rotating rod arranged between the fixed plate and the opposite surface of the disc is in an inclined state, and the rotating rod drives the disc to rotate clockwise;

[0008] S3, rotation separation: After the die-casting action is completed, the transmission column is driven by the power mechanism to separate upward from the mold, the torsion spring rebounds without being affected by the downward pressure, the fixed plate and the disc begin to move away, and the rotating rod drives the disc to rotate counterclockwise to avoid adhesion between the upper mold and the die-casting;

[0009] S4. Liquid inlet and demolding: In the initial state, the movable disk is in the middle position inside cavity B. When the die-casting device moves downward, the demolding agent liquid passes through the liquid inlet pipe and enters cavity B through the one-way valve C. When the upper mold and the mold are molded together for die-casting, the sliding rod drives the movable disk to slide upward on the inner wall of cavity B, and the liquid on the upper surface of the movable disk flows downward through the one-way valve A. After the die-casting is completed, the mold is separated from the upper die-casting device, and the sliding rod drives the movable disk to slide downward on the inner wall of cavity B. The demolding agent liquid on the lower surface of the movable disk enters the liquid guide tube through the one-way valve B, and the demolding agent liquid passes through the disc and enters cavity A of the upper mold. The liquid is ejected through the inclined hole at the end of cavity A, and the orifice is facing the die-casting processed below, so that the die-casting is quickly cooled and demolded.

[0010] Preferably, it includes a mounting frame, the inner wall of the mounting frame is slidably connected with a transmission column driven to rise and fall by a power mechanism, the lower surface of the transmission column is fixedly connected with a fixed plate, the lower surface of the fixed plate close to the edge is fixedly connected with four limit rods, the four limit rods are movably connected with the same disc, the lower surface of the disc is fixedly connected with an upper mold, the inner bottom wall of the mounting frame is fixedly connected with a liquid supply mechanism, a layer plate fixed to the inner wall of the mounting frame is arranged above the liquid supply mechanism, and the upper surface of the layer plate is fixedly connected with a mold matching the upper mold.

[0011] Preferably, the liquid supply mechanism comprises a crucible furnace for temporarily storing the molten metal, the upper space of the crucible furnace is filled with an inert gas, the upper surface of the crucible furnace is penetrated and fixedly connected with a runner for guiding the molten metal from bottom to top, the top of the runner extends upward to the inner bottom wall of the mold, and the crucible furnace is provided with a gas supply mechanism;

[0012] The gas supply mechanism includes an air cylinder fixed on the inner bottom wall of the mounting frame, the inner wall of the air cylinder is slidably connected with an air plug in upper and lower limit positions, the air cylinder and the crucible furnace are connected via an identical air inlet pipe, the inner wall of the air inlet pipe is fixedly connected with a one-way air guide valve A, the arc-shaped contour of the air cylinder is penetrated by and fixedly connected with an air supply pipe connected to an external inert gas source, the inner wall of the air supply pipe is fixedly connected with a one-way air guide valve B, and the upper surface of the air plug is fixedly connected with a transmission rod driven to slide in upper and lower limit positions.

[0013] Preferably, a cavity A is opened inside the upper mold, the bottom of the cavity A extends downward to the inner wall of the upper mold, and the end of the cavity A is inclined and points to the die-casting to be demolded.

[0014] Preferably, the upper surface of the disc is penetrated and fixedly connected with two liquid guide tubes, the bottoms of the two liquid guide tubes penetrate the upper mold and communicate with the top of cavity A, and a cavity B for storing a release agent is opened inside the fixed disc.

[0015] Preferably, the inner wall of the cavity B is slidably connected with a movable disk in upper and lower limit positions, the lower surface of the movable disk is fixedly connected with a sliding rod, the bottom of the sliding rod is fixedly connected to the upper surface of the disc, the upper surface of the movable disk is penetrated by and fixedly connected with a one-way valve A, the bottom of the fixed disk is penetrated by and fixedly connected with a one-way valve B, the top of the fixed disk is penetrated by and fixedly connected with a one-way valve C, the upper surface of the fixed disk facing the one-way valve C is fixedly connected with a liquid inlet pipe connected to an external release agent, the arc-shaped contour of the sliding rod is covered with a torsion spring, and the two ends of the torsion spring are fixedly connected to the opposite surfaces of the disc and the fixed disk.

[0016] Preferably, the portion of the limit rod near the bottom is a vertical section that matches the arc-shaped contour of the disc, the upper and middle portion of the limit rod is an inclined section that limits the vertical movement of the disc, a hemispherical groove A is provided on the lower surface of the fixed disc, and a universal ball A is rotatably connected in the groove, a rotating rod is fixedly connected to the bottom of the universal ball A, a universal ball B is fixedly connected to the bottom of the rotating rod, and a hemispherical groove B that matches the universal ball B is provided on the upper surface of the disc.

[0017] Preferably, the number of the rotating rods is two and the two rotating rods are symmetrically arranged on the upper surface of the disc, and the rotating rods are in an inclined state when the transmission column is in the highest position.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention cooperates with the liquid supply mechanism and the gas supply mechanism arranged below the mold to facilitate the inert gas to enter the crucible furnace, so that the metal solution in the crucible furnace enters the mold from bottom to top, and the effect of automatic liquid feeding during die casting can be achieved.

[0020] 2. The present invention provides a cavity in the upper die for the release agent to fall, and the end of the cavity is inclined and points downward to the die casting, so that the die casting can be sprayed and demolded quickly.

[0021] 3. The present invention realizes the falling and storage of the release agent liquid by setting a movable disk in the cavity A, and the movable disk slides up and down on the inner wall of the cavity A during the die-casting process, thereby achieving the effect of liquid before die-casting and falling and spraying after die-casting.

[0022] 4. The present invention achieves the effect of rapid separation of the upper mold and the die casting by the cooperation of the torsion spring and the rotating rod arranged between the opposite surfaces of the circular disk and the fixed disk, and also achieves the effect of the movable disk sliding up and down to fill and store the release agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the liquid supply mechanism and the gas supply mechanism of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the portion where the upper mold of the present invention is located;

[0026] Figure 4 It is a cross-sectional schematic diagram of the portion where the fixed disk of the present invention is located;

[0027] Figure 5 A three-dimensional diagram of the structure where the torsion spring of the present invention is located;

[0028] Figure 6 A three-dimensional diagram of the structure where the universal ball A of the present invention is located;

[0029] Figure 7 A three-dimensional diagram of the structure where the universal ball B of the present invention is located;

[0030] Figure 8 This is a schematic diagram of the interior of the crucible furnace of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Fig.10 The present invention is a flow chart of the die-casting method of the aluminum alloy housing die-casting.

[0033] In the figure: 1. transmission column; 2. mounting frame; 3. fixed plate; 4. limiting rod; 5. liquid guide tube; 6. disc; 7. upper mold; 8. mold; 9. layer plate; 10. runner; 11. liquid supply mechanism; 12. crucible furnace; 13. liquid inlet pipe; 14. cavity B; 15. sliding rod; 16. torsion spring; 17. rotating rod; 18. air supply mechanism; 19. one-way valve A; 20. one-way valve B; 21. air inlet pipe; 22. transmission rod; 23. air plug; 24. air cylinder; 25. cavity A; 26. movable plate; 27. one-way air guide valve A; 28. one-way air guide valve B; 29. ​​air supply pipe; 30. hemispherical groove B; 31. one-way valve C; 32. hemispherical groove A; 33. universal ball A; 34. universal ball B. DETAILED DESCRIPTION

[0034] 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.

[0035] Embodiment 1:

[0036] See also Figures 1 to 10 The present invention provides a technical solution: a die-casting method for an aluminum alloy housing die-casting, comprising a mounting frame 2, characterized in that: the inner wall of the mounting frame 2 is slidably connected with a transmission column 1 driven to rise and fall by a power mechanism, the lower surface of the transmission column 1 is fixedly connected with a fixed plate 3, the lower surface of the fixed plate 3 near the edge is fixedly connected with four limit rods 4, the four limit rods 4 are movably connected with the same disc 6, the lower surface of the disc 6 is fixedly connected with an upper mold 7,

[0037] The inner bottom wall of the mounting frame 2 is fixedly connected with a liquid supply mechanism 11 , and a layer plate 9 fixed on the inner wall of the mounting frame 2 is arranged above the liquid supply mechanism 11 , and a mold 8 matched with the upper mold 7 is fixedly connected to the upper surface of the layer plate 9 .

[0038] When in use, first, a transmission column 1 is arranged on the inner wall of the mounting frame 2 and at the same time, the transmission column 1 is driven by the power mechanism to slide up and down. In the initial state, the transmission column 1 is in the highest position. When the transmission column 1 moves downward, it drives the fixed disk 3, and four limit rods 4 are evenly arranged on the lower surface of the fixed disk 3 near the edge. The four limit rods 4 are in contact with the same disc 6. When the disc 6 moves downward, the four limit rods 4 will limit the contact with the disc 6. At the same time, an upper mold 7 for die-casting the die-casting part is arranged on the lower surface of the disc 6, and a mold 8 for placing the molten metal is arranged directly below the upper mold 7, and a layer plate 9 is arranged on the lower surface of the mold 8, so that the power mechanism drives the die-casting device to perform downward die-casting. At the same time, a liquid supply mechanism 11 for casting the molten metal on the mold 8 is arranged on the lower surface of the layer plate 9.

[0039] Embodiment 2:

[0040] On the basis of the first embodiment, further:

[0041] The liquid supply mechanism 11 includes a crucible furnace 12 for temporarily storing the molten metal. The upper space of the crucible furnace 12 is filled with an inert gas. The upper surface of the crucible furnace 12 is penetrated and fixedly connected with a runner 10 for guiding the molten metal from bottom to top. The top of the runner 10 extends upward to the inner bottom wall of the mold 8. The crucible furnace 12 is provided with a gas supply mechanism 18.

[0042] The gas supply mechanism 18 includes an air cylinder 24 fixed on the inner bottom wall of the mounting frame 2, the inner wall of the air cylinder 24 is slidably connected with an air plug 23 in upper and lower limit positions, the air cylinder 24 and the crucible furnace 12 are connected via the same air inlet pipe 21, the inner wall of the air inlet pipe 21 is fixedly connected with a one-way air guide valve A27, the arc-shaped contour of the air cylinder 24 is penetrated and fixedly connected with an air supply pipe 29 connected to an external inert gas source, the inner wall of the air supply pipe 29 is fixedly connected with a one-way air guide valve B28, and the upper surface of the air plug 23 is fixedly connected with a transmission rod 22 driven to slide in upper and lower limit positions.

[0043] When in use, firstly, the crucible furnace 12 is arranged on the inner bottom wall of the mounting frame 2 and there is temporarily stored molten metal in the crucible furnace 12. When the upper space in the crucible furnace 12 is filled with inert gas, the inert gas will increase the pressure on the liquid surface, and the pouring channel 10 connected to the crucible furnace 12 will extend into the molten metal. When subjected to pressure, the molten metal will be led from the pouring channel 10 from bottom to top to the inner bottom wall of the mold 8. When the upper die-casting mechanism performs die-casting downward, the molten metal completes the die-casting. At the same time, a gas supply mechanism 18 connected to introduce inert gas is arranged on the crucible furnace 12;

[0044] In the initial state, the gas plug 23 on the gas supply mechanism 18 is located at the highest position of the inner wall of the gas cylinder 24, and the gas cylinder 24 is fixedly installed on the inner bottom wall of the mounting frame 2. At the same time, the gas plug 23 slides up and down on the inner wall of the gas cylinder 24. Inert gas is introduced into the gas cylinder 24, and the gas cylinder 24 is connected to the crucible furnace 12 through the air inlet pipe 21. A one-way air guide valve A27 is installed at one end of the air inlet pipe 21. When the gas plug 23 slides downward along the inner wall of the gas cylinder 24, the inert gas is pressurized and passes through the one-way air guide valve A27 and passes through The air inlet pipe 21 enters into the interior of the crucible furnace 12, and at the same time, an air supply pipe 29 connected to the external inert gas is arranged on the air cylinder 24, and a one-way air guide valve B28 is arranged on the air supply pipe 29. When the air plug 23 moves upward along the inner wall of the air cylinder 24, the external inert gas enters into the air cylinder 24 through the one-way air guide valve B28. At the same time, a transmission rod 22 is installed on the upper surface of the air plug 23, and the other end of the transmission rod 22 is fixedly connected to the transmission column 1, thereby realizing the purpose of the die-casting mechanism driving the air supply mechanism 18 to intake air and guide liquid.

[0045] Embodiment three:

[0046] On the basis of the second embodiment, further:

[0047] A cavity A25 is formed inside the upper mold 7 , and the bottom of the cavity A25 extends downward to the inner wall of the upper mold 7 . The end of the cavity A25 is inclined and points to the die-casting to be demolded.

[0048] When in use, first, the cavity A25 set inside the upper mold 7 is passed through, and the bottom of the cavity A25 extends downward to the inner wall of the bottom of the upper mold 7. At the same time, the outlet of the lower end of the cavity A25 is inclined and points to the die-casting to be demolded below. When the release agent liquid falls through the cavity A25, the liquid is sprayed on the die-casting to be demolded, thereby achieving the effect of quickly cooling and demolding the die-casting through the cavity A25 set on the die-casting mechanism.

[0049] Embodiment 4:

[0050] On the basis of the third embodiment, further:

[0051] Two liquid guide tubes 5 are penetrated and fixedly connected to the upper surface of the disc 6. The bottoms of the two liquid guide tubes 5 penetrate the upper mold 7 and are connected to the top of the cavity A25. A cavity B14 for storing a release agent is provided inside the fixed disc 3.

[0052] When in use, first, through the two liquid guide tubes 5 set on the disc 6, the liquid guide tubes 5 pass through the upper mold 7 and are connected with the top of the cavity A25. When the release agent liquid falls through the liquid guide tubes 5, the liquid will pass through the upper mold 7 and be sprayed onto the die-casting through the cavity A25. At the same time, a cavity B14 for guiding and storing liquid is provided inside the fixed disk 3.

[0053] Embodiment five:

[0054] On the basis of the fourth embodiment, further:

[0055] The inner wall of the cavity B14 is slidably connected with a movable disk 26 in upper and lower limit positions, and the lower surface of the movable disk 26 is fixedly connected with a sliding rod 15, and the bottom of the sliding rod 15 is fixedly connected to the upper surface of the disc 6. The upper surface of the movable disk 26 is penetrated by and fixedly connected with a one-way valve A19, the bottom of the fixed disk 3 is penetrated by and fixedly connected with a one-way valve B20, and the top of the fixed disk 3 is penetrated by and fixedly connected with a one-way valve C31. The upper surface of the fixed disk 3 facing the one-way valve C31 is fixedly connected with a liquid inlet pipe 13 connected with an external release agent, and the arc-shaped contour of the sliding rod 15 is covered with a torsion spring 16, and the two ends of the torsion spring 16 are fixedly connected to the opposite surfaces of the disc 6 and the fixed disk 3.

[0056] When in use, first, a movable disk 26 is arranged on the inner wall of the cavity B14, and the movable disk 26 slides up and down on the inner wall of the cavity B14, and at the same time, a sliding rod 15 is installed on the lower surface of the movable disk 26, and the other end of the sliding rod 15 is fixedly connected to the disc 6, a one-way valve A19 is arranged on the upper surface of the movable disk 26, a one-way valve B20 is arranged on the bottom of the fixed disk 3, and a one-way valve C31 is arranged on the bottom of the fixed disk 3, and a liquid inlet pipe 13 connected to the external release agent liquid is installed on the upper surface of the fixed disk 3. When the movable disk 26 is driven by the sliding rod 15 and moves upward on the inner wall of the cavity B14, the release agent liquid flows from the upper surface of the movable disk 26 through the one-way valve A19 enters into the lower surface of the movable disk 26. When the movable disk 26 moves downward on the inner wall of the cavity B14, the release agent liquid on the lower surface of the movable disk 26 enters into the liquid guide tube 5 through the one-way valve B20, and is passed through the torsion spring 16 arranged on the arc-shaped contour of the sliding rod 15, and the two ends of the torsion spring 16 are fixedly connected to the opposite surfaces of the disc 6 and the fixed disk 3. When the die-casting mechanism performs downward die-casting and the upper mold 7 contacts the mold 8, the torsion spring 16 contracts and deforms, and the sliding rod 15 drives the movable disk 26 to move upward in the cavity B14. When the die-casting is completed, the die-casting mechanism moves upward, and the torsion spring 16 rebounds to drive the sliding rod 15 and the movable disk 26 to move downward, thereby realizing the process of liquid injection and spraying of the release agent liquid during the die-casting process.

[0057] Embodiment six:

[0058] On the basis of the fifth embodiment, further:

[0059] The portion of the limit rod 4 near the bottom that is adapted to the arc-shaped contour of the disc 6 is a vertical section, the middle and upper portion of the limit rod 4 is an inclined section that limits the vertical movement of the disc 6, a hemispherical groove A32 is provided on the lower surface of the fixed disc 3, and a universal ball A33 is rotatably connected in the groove, a rotating rod 17 is fixedly connected to the bottom of the universal ball A33, a universal ball B34 is fixedly connected to the bottom of the rotating rod 17, and a hemispherical groove B30 adapted to the universal ball B34 is provided on the upper surface of the disc 6.

[0060] When in use, firstly, four limit rods 4 are arranged on the lower surface of the fixed plate 3, and the bottom part of the limit rod 4 is a vertical section adapted to the arc contour of the disc 6, and the upper and middle part is an inclined section for limiting the vertical movement of the disc 6. When the disc 6 moves downward, the four limit rods 4 limit it, and a hemispherical groove is arranged on the lower surface of the fixed plate 3, and a universal ball A33 is installed through the groove, a rotating rod 17 is arranged on the universal ball A33, and a universal ball B34 is also arranged on the other end of the rotating rod 17, and a hemispherical groove B30 is also arranged on the upper surface of the disc 6, so as to realize the rotation effect of the die-casting mechanism on the disc 6, so that the rotating rod 17 can rotate quickly and separate from the die-casting after die-casting, thereby avoiding adhesion to the die-casting.

[0061] Embodiment seven:

[0062] On the basis of the sixth embodiment, further:

[0063] There are two rotating rods 17 and the two rotating rods 17 are symmetrically arranged on the upper surface of the disc 6. When the transmission column 1 is at the highest position, the rotating rods 17 are in an inclined state.

[0064] When in use, two symmetrical rotating rods 17 are arranged on the upper surface of the disc 6, and the rotating rods 17 are in an inclined state when the transmission column 1 is in the highest position, so that the rotating rods 17 rotate clockwise every time the die-casting mechanism moves downward, thereby improving the die-casting and separation efficiency.

[0065] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0066] 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. A die-casting method for an aluminum alloy housing die-casting, characterized in that: The steps of this method are as follows: S1. Downward pressure inflation: In the initial state, the transmission column (1) is at the highest position. Driven by the power mechanism, the transmission column (1) drives the transmission rod (22) to move downward, and the other end of the transmission rod (22) is fixedly connected to the gas plug (23). At the same time, the inert gas inside the gas cylinder (24) is squeezed downward by the gas plug (23) and enters the crucible furnace (12) through the one-way gas guide valve A (27) and the gas inlet pipe (21). There is temporarily stored metal solution inside the crucible furnace (12). The inert gas is on the surface of the metal solution, increasing the pressure of the liquid surface. The metal solution will enter the mold (8) from bottom to top through the runner (10); S2, rotary die-casting: the transmission column (1) is driven by the power mechanism, and the transmission column (1) drives the fixed disk (3), and the fixed disk (3) drives the sliding rod (15), and the sliding rod (15) drives the disc (6) and drives the upper mold (7) to perform downward die-casting. When the upper mold (7) and the mold (8) are die-casting molded together, the torsion spring (16) is in a contracted state under the action of pressure, and the rotating rod (17) arranged between the opposite surfaces of the fixed disk (3) and the disc (6) is in an inclined state, and the rotating rod (17) drives the disc (6) to rotate clockwise; S3, rotational separation: after the die-casting action is completed, the transmission column (1) is driven by the power mechanism to separate upward from the mold (8), the torsion spring (16) rebounds without being affected by the downward pressure, the fixed plate (3) and the disc (6) begin to move away from each other, and at the same time, the rotating rod (17) drives the disc (6) to rotate counterclockwise to avoid adhesion between the upper mold (7) and the die-casting; S4, liquid injection and demoulding; S4. The specific steps of liquid inlet and demoulding are as follows: in the initial state, the movable disk (26) is in the middle position inside the cavity B (14). When the die-casting device moves downward, the demoulding agent liquid passes through the liquid inlet pipe (13) and enters the cavity B (14) through the one-way valve C (31). When the upper mold (7) and the mold (8) are molded together for die casting, the sliding rod (15) drives the movable disk (26) to slide upward on the inner wall of the cavity B (14). The liquid on the upper surface of the movable disk (26) flows downward through the one-way valve A (19). After the die-casting is completed, the mold (8) is separated from the upper die-casting device, and the sliding rod (15) drives the movable disk (26) to slide downward on the inner wall of the cavity B (14). The demoulding agent liquid on the lower surface of the movable disk (26) enters the liquid guide tube (5) through the one-way valve B (20), and the demoulding agent liquid passes through the disc (6) and enters the cavity A (25) of the upper mold (7). The liquid is ejected through the inclined hole at the end of the cavity A (25), and the hole is directly facing the die-casting processed below, so that the die-casting is quickly cooled and demoulded; The inner wall of the mounting frame (2) is slidably connected to a transmission column (1) driven to rise and fall by a power mechanism in an upper and lower limit position, the lower surface of the transmission column (1) is fixedly connected to a fixed plate (3), the lower surface of the fixed plate (3) near the edge is fixedly connected to four limit rods (4), the four limit rods (4) are movably connected to the same disc (6), the lower surface of the disc (6) is fixedly connected to an upper mold (7), The inner bottom wall of the mounting frame (2) is fixedly connected to a liquid supply mechanism (11), a layer plate (9) fixed to the inner wall of the mounting frame (2) is arranged above the liquid supply mechanism (11), and a mold (8) matching the upper mold (7) is fixedly connected to the upper surface of the layer plate (9); The liquid supply mechanism (11) comprises a crucible furnace (12) for temporarily storing the molten metal, the upper space of the crucible furnace (12) is filled with an inert gas, the upper surface of the crucible furnace (12) is penetrated and fixedly connected with a pouring channel (10) for guiding the molten metal from bottom to top, the top of the pouring channel (10) extends upward to the inner bottom wall of the mold (8), and the crucible furnace (12) is provided with a gas supply mechanism (18); The gas supply mechanism (18) comprises a gas cylinder (24) fixed on the inner bottom wall of the mounting frame (2); the inner wall of the gas cylinder (24) is slidably connected to a gas plug (23) in an upper and lower limit position; the gas cylinder (24) and the crucible furnace (12) are connected to the same gas inlet pipe (21); the inner wall of the gas inlet pipe (21) is fixedly connected to a one-way gas guide valve A (27); a gas supply pipe (29) connected to an external inert gas source is penetrated and fixedly connected on the arc profile of the gas cylinder (24); the inner wall of the gas supply pipe (29) is fixedly connected to a one-way gas guide valve B (28); and the upper surface of the gas plug (23) is fixedly connected to a transmission rod (22) driven to slide in an upper and lower limit position; A cavity A (25) is formed inside the upper mold (7), the bottom of the cavity A (25) extends downward to the inner wall of the upper mold (7), and the end of the cavity A (25) is inclined and points to the die casting to be demolded; The upper surface of the circular disk (6) is penetrated and fixedly connected with two liquid guide tubes (5), the bottoms of the two liquid guide tubes (5) penetrate the upper mold (7) and are connected to the top of the cavity A (25), and the interior of the fixed disk (3) is provided with a cavity B (14) for storing a release agent; The inner wall of the cavity B (14) is slidably connected to a movable disk (26) in an upper and lower limit position, the lower surface of the movable disk (26) is fixedly connected to a sliding rod (15), the bottom of the sliding rod (15) is fixedly connected to the upper surface of the disc (6), the upper surface of the movable disk (26) is penetrated and fixedly connected to a one-way valve A (19), the bottom of the fixed disk (3) is penetrated and fixedly connected to a one-way valve B (20), the top of the fixed disk (3) is penetrated and fixedly connected to a one-way valve C (31), and the upper surface of the fixed disk (3) facing the one-way valve C (31) is fixedly connected to a liquid inlet pipe (13) connected to an external release agent; A torsion spring (16) is sleeved on the arc-shaped profile of the sliding rod (15), and two ends of the torsion spring (16) are fixedly connected to the opposite surfaces of the disc (6) and the fixed disc (3).

2. The die-casting method of an aluminum alloy housing die-casting according to claim 1, characterized in that: The portion of the limiting rod (4) close to the bottom that is adapted to the arc-shaped contour of the disc (6) is a vertical section, and the upper middle portion of the limiting rod (4) is an inclined section that limits the vertical movement of the disc (6).

3. The die-casting method of an aluminum alloy housing die-casting according to claim 2, characterized in that: A hemispherical groove A (32) is provided on the lower surface of the fixed plate (3) and a universal ball A (33) is rotatably connected in the groove. A rotating rod (17) is fixedly connected to the bottom of the universal ball A (33).

4. The die-casting method of an aluminum alloy housing die-casting according to claim 3, characterized in that: A universal ball B (34) is fixedly connected to the bottom of the rotating rod (17), and a hemispherical groove B (30) matching the universal ball B (34) is formed on the upper surface of the disc (6).

5. The die-casting method of an aluminum alloy housing die-casting according to claim 4, characterized in that: The number of the rotating rods (17) is two and the two rotating rods (17) are symmetrically arranged on the upper surface of the disc (6); when the transmission column (1) is in the highest position, the rotating rods (17) are in an inclined state.

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