Die casting equipment for aluminum alloy die casting and forming process of die casting equipment

Abstract

The invention discloses die-casting equipment for aluminum alloy die castings and a forming process of the die-casting equipment, and relates to the related technical field of the aluminum alloy die-casting equipment, the die-casting equipment comprises a rack body, and a die-casting module used for forming the aluminum alloy die castings is arranged above the rack body; the die-casting module comprises a movable die base and a fixed die base matched with the movable die base, when the die-casting module is used, the arc-shaped contour of the outer side of the protruding locking block can extrude the arc-shaped contour of the locking groove at the moment when the movable die base makes contact with the side die, at the moment, the side die shell can slightly displace outwards, and after the protruding locking block and the locking groove are completely clamped, the side die shell can be locked. The side mold shell is returned under the ejection of the ejection spring, so that the locking of the movable mold seat and the side mold is realized; the inert gas purges the first cavity and the second cavity through the injection pipe, so that a workpiece does not make contact with air in the die-casting forming process, the inert gas is used for protection, metal liquid is prevented from making contact with the air to generate oxidation, and the surface quality and the structure quality of the workpiece are improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to aluminum alloy die-casting equipment, and in particular to a die-casting equipment for aluminum alloy die-castings and a molding process thereof. Background Art

[0002] Die casting is a kind of pressure-cast parts. It uses a pressure casting machine equipped with a casting mold to pour liquid metals such as copper, zinc, aluminum or aluminum alloy into the inlet of the die casting machine. The die casting machine is die-cast to cast copper, zinc, aluminum or aluminum alloy parts in the shape and size of the mold. Such parts are usually called die castings.

[0003] During die casting, the two molds are first closed, and then the aluminum alloy liquid is fed into the piston cylinder by a spoon. The liquid is then filled into the cavity by pressing the piston, and the cavity is formed after cooling.

[0004] When die-casting products, the existing die-casting machine uses the pushing force of the oil cylinder or the air cylinder to close and lock the mold. However, the mold itself does not have a locking structure. The liquid pushed in by the piston rod also has a certain pressure, and this pressure gradually increases as the piston rod is pushed in. Therefore, there is a top force between the two molds, which makes it possible for a gap to exist between the two molds, resulting in a layer of excess material on the outer edge of the die-cast product, which requires subsequent manual processing. Moreover, traditional die-casting equipment has a large contact area with the air during die-casting. During the molding process, it will come into contact with the air and produce oxidation, and a large area of ​​oxidized slag will appear on the surface of the workpiece; in addition, there are a large number of pinhole-shaped pores in the cross section of the workpiece. Summary of the invention

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a die-casting device for aluminum alloy die-casting parts, which can achieve mold locking between the fixed mold and the movable mold when closing the mold, prevent the generation of excess material during the die-casting process, and use inert gas to purge the mold in advance to avoid oxidation and pinhole-shaped pores caused by excessive contact between the aluminum alloy liquid and the air during the die-casting process, so as to solve the technical problems mentioned in the above background.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A die-casting device for aluminum alloy die-castings comprises a frame body, a die-casting die set for forming aluminum alloy die-castings is arranged above the frame body; the die-casting die set comprises a movable die seat and a fixed die seat matched with the movable die seat; side dies are arranged on both sides of the movable die seat and the fixed die seat, and a driving member is matched and installed at the bottom of the side die; The fixed mold base comprises a fixed mold body, on which a rectangular groove and a through groove are provided, wherein an inner mold locking hook is fitted in the through groove, and the inner mold locking hook is rotatably connected to the upper end of the rotating shaft; The side mold comprises a side mold shell, which is arranged in a C-shape, an inner clamping piece matched with the inner mold locking hook is arranged in the middle position of the inner side of the side mold shell, and a locking groove locked with the raised locking block is arranged on the top; The driving member includes a first driving rod and a second driving rod, the first driving rod is rotationally connected to the first protruding column, the second driving rod is rotationally connected to the second protruding column, and the other ends of the first driving rod and the second driving rod are connected to a connecting rod through a rotating shaft; the connecting rod is movably connected to the traction column.

[0007] Furthermore, the movable mold base includes a movable mold body, a second cavity is opened on the inner side of the movable mold body, and a die-casting runner is opened in the middle position below the second cavity; a stepped hole is opened through the lower end of the movable mold body; second raised columns are welded at both ends of the bottom of the movable mold body, and raised locking blocks are welded at both ends of the top of the movable mold body.

[0008] Furthermore, a first cavity matching with the second cavity is formed inside the fixed mold body; a push plate is slidably connected in the rectangular groove, the push plate is fixed to the slide plate through two fixing columns, tooth plates are welded at both ends of the slide plate, and two springs are provided between the slide plate and the rectangular groove; Each of the toothed plates corresponds to a ratchet gear; the ratchet gear is mounted on a rotating shaft; the rotating shaft is rotationally connected to the fixed mold body; a torsion spring is also fixed on the rotating shaft, and two claws of the torsion spring are engaged with the fixed mold body.

[0009] Furthermore, a fixed frame is welded to the inner side of the lower end of the side mold shell, a sliding block is slidably connected inside the fixed frame, and tensioning springs are provided on both sides of the sliding block; a traction column is welded to the bottom of the tensioning spring.

[0010] Furthermore, two slide grooves are provided at the bottom of the side mold shell and are slidably connected to a slide; the slide is fixed on the frame body.

[0011] Furthermore, a stepped shaft is fitted in the stepped hole, one end of the stepped shaft is fixedly connected to the push plate, and the other end is fixedly connected to the sliding block; guide columns are fixed at the four corners of the movable mold base; the guide columns are slidably connected to the sliding block; The sliding block is slidably connected to the sliding rail; the sliding rail is fixed to the frame body through countersunk bolts; the sliding block is also connected to the second fixed seat through a hinge mechanism, and a cylinder is fixedly installed at the middle position of the second fixed seat; the cylinder rod of the cylinder is fixed to the sliding block.

[0012] Furthermore, the fixed mold seat is fixedly connected to the first fixed seat, a C-frame is fixed on the other side of the first fixed seat, and an injection piston assembly is fixed on the outer end of the C-frame; the injection piston assembly is connected to the first cavity on the fixed mold body through an injection pipe.

[0013] Furthermore, an air chamber is installed above the injection piston assembly, and an air inlet hole is provided between the air chamber and the piston cylinder in the injection piston assembly; a gas cylinder is fixed on the top of the air chamber; the gas cylinder is connected to a pressure reducing valve installed on the top of the inert gas bottle; and the inert gas bottle is installed on a base.

[0014] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that: In the present invention, the torsion spring drives the rotating shaft to rotate according to its own torque force, so that the inner mold locking hook is engaged with the inner clamping member, thereby achieving mold locking and fixation of the fixed mold seat and the side mold; In the present invention, at the moment when the movable mold seat contacts the side mold, the arc-shaped contour of the outer side of the protruding locking block will squeeze the arc-shaped contour of the locking groove, and the side mold shell will be slightly displaced outward. After the protruding locking block is completely engaged with the locking groove, the side mold shell returns to its original position under the pushing of the tightening spring, thereby realizing the locking of the movable mold seat and the side mold; In the present invention, the inert gas bottle is transported to the gas cylinder after being decompressed, and after the solenoid valve between the gas cylinder and the gas chamber is opened, the inert gas enters the injection piston assembly through the gas chamber, and then the first cavity and the second cavity are purged through the injection pipe, so that the workpiece does not contact with the air during the die-casting process, and the inert gas is used for protection, so that the oxidation of the metal liquid caused by contact with the air is avoided, and the surface quality and the workpiece structure quality are improved; In the present invention, when the mold is opened, when the stepped shaft drives the push plate to move, the toothed plate drives the ratchet gear to rotate, and the inner mold locking hook is deflected under the drive of the rotating shaft, thereby realizing the disengagement of the inner mold locking hook and the inner clamping member, and releasing the locking state of the fixed mold seat and the side mold; with the cooperation of the driving member, the two side molds are opened outward along the slide, thereby realizing the mold opening of the equipment and facilitating the removal of the casting.

[0015] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 The present invention Figure 1 The main view; Figure 3 The present invention Figure 1 Schematic diagram of the rear structure; Figure 4 It is a schematic diagram of the structure of the die-casting die set in the present invention; Figure 5 The present invention Figure 4 The main view; Figure 6 The present invention Figure 5 AA section view; Figure 7 The present invention Figure 5 BB cross-sectional view; Figure 8 The present invention Figure 4 Schematic diagram of the bottom structure; Fig. 9 The present invention Figure 4 Schematic diagram of the split structure; Fig.10 The present invention Fig. 9 Schematic diagram of the rear structure; Fig.11 The present invention Fig. 9 Schematic diagram of some structures; Fig.12 It is a structural schematic diagram of the fixed mold base in the present invention; Fig.13 It is a schematic diagram of the side mold structure in the present invention; Fig.14 The present invention Figure 4 A partial enlarged schematic diagram of Fig.15 The present invention Figure 8 A local enlarged schematic diagram; Fig.16 The present invention Fig.10 A partial enlarged schematic diagram of Fig.17 The present invention Figure 7 A partial enlarged schematic diagram of Fig.18 It is a schematic diagram of a die casting product produced by using the present invention.

[0017] The reference numerals are as follows: 1-base, 2-frame body, 3-slide rail, 4-slide block, 5-die casting die, 6-first fixed seat, 7-guide column, 8-hinge mechanism, 9-cylinder, 10-C-frame, 11-injection pipe, 12-injection piston assembly, 13-gas cylinder, 14-gas chamber, 15-inert gas bottle, 16-second fixed seat, 17-slide column; 51-movable die seat, 52-fixed die seat, 53-rear fixed seat, 54-side die, 55-slide, 56-driving member, 57-stepped shaft, 58-push plate, 59-fixed column, 510-tooth plate, 511-spring, 512-ratchet gear, 513-rotating shaft, 514-inner die locking hook, 515-torsion spring; 521 - fixed mold body, 522 - first mold cavity, 523 - rectangular groove, 524 - through groove, 525 - first protruding column; 541-side mold shell, 542-internal clamp, 543-locking groove, 544-fixing frame, 545-sliding block, 546-tension spring, 547-traction column; 561-first driving rod, 562-second driving rod, 563-connecting rod; 5101-movable mold body, 5102-second cavity, 5103-step hole, 5104-die casting runner, 5105-raised locking block, 5106-arc top block, 5107-second raised column. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the present application, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0020] Please refer to Figure 4-11 As shown, a die-casting device for aluminum alloy die-casting parts includes a frame body 2, and a die-casting die set 5 for forming aluminum alloy die-casting parts is arranged above the frame body 2; the die-casting die set 5 includes a movable die seat 51 and a fixed die seat 52 matched with the movable die seat 51; side dies 54 are arranged on both sides of the movable die seat 51 and the fixed die seat 52, and a driving member 56 is installed at the bottom of the side die 54; The fixed mold seat 52 is fixedly connected to the first fixed seat 6, a C-frame 10 is fixed on the other side of the first fixed seat 6, and an injection piston assembly 12 is fixed on the outer end of the C-frame 10; the injection piston assembly 12 is connected to the first cavity 522 on the fixed mold body 521 through the injection pipe 11.

[0021] By adopting the above technical solution, when in use, the cylinder rod of the cylinder 9 extends to push the sliding block 4 to slide along the slide rail 3. When the sliding block 4 contacts the movable mold base 51, it will drive the movable mold base 51 to slide toward the fixed mold base 52, thereby achieving mold closing.

[0022] See also Fig.12 In this embodiment, the fixed mold base 52 includes a fixed mold body 521, and a rectangular groove 523 and a through groove 524 are formed on the fixed mold body 521, wherein an inner mold locking hook 514 is installed in the through groove 524, and the inner mold locking hook 514 is rotatably connected to the upper end of the rotating shaft 513; See also Fig.13 The side mold 54 includes a side mold shell 541, which is arranged in a C-shape. An inner clamp 542 that matches with the inner mold locking hook 514 is arranged in the middle position of the inner side of the side mold shell 541, and a locking groove 543 that locks with the protruding locking block 5105 is opened on the top; Please refer to Figures 11-17. The driving member 56 includes a first driving rod 561 and a second driving rod 562. The first driving rod 561 is rotationally connected to the first protruding column 525, and the second driving rod 562 is rotationally connected to the second protruding column 5107. The other ends of the first driving rod 561 and the second driving rod 562 are connected to the connecting rod 563 through a rotating shaft; the connecting rod 563 is movably connected to the traction column 547.

[0023] By adopting the above technical solution, during the movement of the movable mold seat 51, the first driving rod 561 and the second driving rod 562 arranged in an eight-shaped shape are closed inwardly, and under the pulling of the connecting rod 563, the side molds 54 on both sides are closed toward the movable mold seat 51 and the fixed mold seat 52. Since the stroke of the side molds 54 is short, they will first engage with the fixed mold seat 52. When engaging, the torsion spring 515 drives the rotating shaft 513 to rotate according to its own torque force, so that the inner mold locking hook 514 is engaged with the inner clamping member 542, thereby achieving the locking and fixation of the fixed mold seat 52 and the side molds 54. At this time, the movable mold base 51 is still moving, and the side mold 54 is no longer moving. The traction column 547 will compress the tensioning spring 546 through the sliding block 545 to compensate for the displacement until the movable mold base 51 is engaged with the side mold 54.

[0024] For further explanation of this embodiment, see Figure 14-16The movable mold base 51 includes a movable mold body 5101, a second cavity 5102 is opened on the inner side of the movable mold body 5101, and a die-casting runner 5104 is opened in the middle position below the second cavity 5102; a stepped hole 5103 is opened through the lower end of the movable mold body 5101; second protruding columns 5107 are welded at both ends of the bottom of the movable mold body 5101, and protruding locking blocks 5105 are welded at both ends of the top of the movable mold body 5101.

[0025] The fixed mold body 521 has a first cavity 522 formed inside thereof to match the second cavity 5102; a push plate 58 is slidably connected to the rectangular groove 523, and the push plate 58 is fixed to the slide plate through two fixing columns 59, tooth plates 510 are welded at both ends of the slide plate, and two springs 511 are provided between the slide plate and the rectangular groove 523; Each of the toothed plates 510 corresponds to a ratchet gear 512; the ratchet gear 512 is mounted on a rotating shaft 513; the rotating shaft 513 is rotationally connected to the fixed mold body 521; a torsion spring 515 is also fixed on the rotating shaft 513, and two claws of the torsion spring 515 are engaged with the fixed mold body 521.

[0026] To be more specific, a fixed frame 544 is welded to the inner side of the lower end of the side mold shell 541, a sliding block 545 is slidably connected inside the fixed frame 544, and tensioning springs 546 are provided on both sides of the sliding block 545; a traction column 547 is welded to the bottom of the tensioning spring 546.

[0027] By adopting the above technical solution, when the movable mold seat 51 contacts the side mold 54 at the moment, the arc-shaped contour on the outer side of the raised locking block 5105 will squeeze the arc-shaped contour of the locking groove 543. At this time, the side mold shell 541 will be slightly displaced outward. When the raised locking block 5105 is fully engaged with the locking groove 543, the side mold shell 541 returns to its original position under the pushing of the tightening spring 546, thereby realizing the locking of the movable mold seat 51 and the side mold 54.

[0028] In this embodiment, two sliding grooves are provided at the bottom of the side mold shell 541 and are slidably connected to the slide 55; the slide 55 is fixed on the frame body 2.

[0029] In this embodiment, please refer to the attached Figure 1-3 An air chamber 14 is installed above the injection piston assembly 12, and an air inlet hole is provided between the air chamber 14 and the piston cylinder in the injection piston assembly 12; a gas cylinder 13 is fixed to the top of the air chamber 14; the gas cylinder 13 is connected to a pressure reducing valve installed on the top of an inert gas bottle 15; the inert gas bottle 15 is installed on the base 1.

[0030] By adopting the above technical solution, the inert gas bottle 15 is transported to the gas cylinder 13 after being decompressed. After the solenoid valve between the gas cylinder 13 and the gas chamber 14 is opened, the inert gas enters the injection piston assembly 12 through the gas chamber 14, and then the first cavity 522 and the second cavity 5102 are purged through the injection pipe 11 to reduce the contact between the liquid and the air. Subsequently, the molten alloy liquid is poured from the injection piston assembly 12, and the piston rod in the piston assembly 12 moves to push the liquid to flow along the injection pipe 11, thereby filling the first cavity 522 and the second cavity 5102 through the flow channel. After cooling, the die casting is formed.

[0031] In this embodiment, a stepped shaft 57 is fitted in the stepped hole 5103, one end of the stepped shaft 57 is fixedly connected to the push plate 58, and the other end is fixedly connected to the sliding block 4; guide columns 7 are fixed at the four corners of the movable mold base 51; the guide columns 7 are slidably connected to the sliding block 4; The sliding block 4 is slidably connected to the sliding rail 3; the sliding rail 3 is fixed to the frame body 2 by countersunk bolts; the sliding block 4 is also connected to the second fixed seat 16 by a hinge mechanism 8, and a cylinder 9 is fixedly installed at the middle position of the second fixed seat 16; the cylinder rod of the cylinder 9 is fixed to the sliding block 4.

[0032] By adopting the above technical solution, when the mold is opened, the cylinder rod of the cylinder 9 contracts, driving the sliding block 4 to move along the slide rail 3. At this time, the movable mold seat 51 and the fixed mold seat 52 are still in a locked state, and the sliding block 4 can only slide along the guide column 7. When the stepped shaft 57 drives the push plate 58 to move, the toothed plate 510 drives the ratchet gear 512 to rotate, and the inner mold locking hook 514 is deflected under the drive of the rotating shaft 513, thereby realizing the decoupling of the inner mold locking hook 514 and the inner clamping member 542, and releasing the locking state of the fixed mold seat 52 and the side mold 54; Since the stepped shaft 57 moves outward, it loses the tightening force on the movable die seat 51, and the protruding locking block 5105 and the locking groove 543 are no longer in a closed state. As the stepped shaft 57 continues to move backward, the push plate 58 drives the movable die seat 51 to slide outward. With the cooperation of the driving member 56, the two side molds 54 are opened outward along the slide 55, thereby realizing the mold opening of the equipment and facilitating the removal of the casting. A process for forming aluminum alloy die castings using die casting equipment comprises the following steps: Step 1: mold closing. When in use, the cylinder rod of the air cylinder 9 extends to push the sliding block 4 to slide along the slide rail 3. When the sliding block 4 contacts the movable mold base 51, it will drive the movable mold base 51 to slide toward the fixed mold base 52, thereby achieving mold closing. Step 2: Automatic mold locking. During the movement of the movable mold base 51, the first driving rod 561 and the second driving rod 562 arranged in an eight-shaped shape are closed inwardly. Under the pull of the connecting rod 563, the side molds 54 on both sides are closed toward the movable mold base 51 and the fixed mold base 52. Since the stroke of the side molds 54 is shorter, they will first engage with the fixed mold base 52. When engaging, the torsion spring 515 drives the rotating shaft 513 to rotate according to its own torque force, so that the inner mold locking hook 514 is engaged with the inner clamping member 542, thereby realizing the mold locking and fixation of the fixed mold base 52 and the side molds 54. At this time, the movable mold base 51 is still moving, and the side mold 54 is no longer moving. The traction column 547 will compress the tension spring 546 through the sliding block 545 to compensate for the displacement until the movable mold base 51 is engaged with the side mold 54. When the movable mold base 51 contacts the side mold 54, the arc-shaped contour of the outer side of the protruding locking block 5105 will squeeze the arc-shaped contour of the locking groove 543. At this time, the side mold shell 541 will slightly displace outward. After the protruding locking block 5105 and the locking groove 543 are fully engaged, the side mold shell 541 returns to its original position under the pushing of the tightening spring 546, thereby achieving the locking of the movable mold base 51 and the side mold 54. Step 3: Inert gas purging: the inert gas bottle 15 is transported to the gas cylinder 13 after being decompressed. After the solenoid valve between the gas cylinder 13 and the gas chamber 14 is opened, the inert gas enters the injection piston assembly 12 through the gas chamber 14, and then the first cavity 522 and the second cavity 5102 are purged through the injection pipe 11 to reduce air. Step 4: Injection: Pour the molten alloy liquid from the injection piston assembly 12. The piston rod in the piston assembly 12 moves to push the liquid to flow along the injection pipe 11, thereby filling the first cavity 522 and the second cavity 5102 through the flow channel. After cooling, the die casting is formed. Step 5: Open the mold and take out the parts. When opening the mold, the cylinder rod of the air cylinder 9 contracts, driving the sliding block 4 to move along the slide rail 3. At this time, the movable mold seat 51 and the fixed mold seat 52 are still in a locked state, and the sliding block 4 can only slide along the guide column 7. When the stepped shaft 57 drives the push plate 58 to move, the toothed plate 510 drives the ratchet gear 512 to rotate, and the inner mold locking hook 514 deflects under the drive of the rotating shaft 513, thereby realizing the decoupling of the inner mold locking hook 514 and the inner clamping member 542, and releasing the locking state of the fixed mold seat 52 and the side mold 54; Since the stepped shaft 57 moves outward, the clamping force on the movable mold base 51 is lost, and the protruding locking block 5105 and the locking groove 543 are no longer in a closed state. As the stepped shaft 57 continues to move backward, the push plate 58 drives the movable mold base 51 to slide outward. With the cooperation of the driving member 56, the two side molds 54 are opened outward along the slide 55, thereby realizing the mold opening of the equipment and facilitating the removal of the casting.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A die-casting device for aluminum alloy die-castings, characterized in that: The machine comprises a frame body (2), wherein a die-casting die set (5) for forming aluminum alloy die-casting parts is arranged above the frame body (2); the die-casting die set (5) comprises a movable die seat (51) and a fixed die seat (52) matched with the movable die seat (51); side dies (54) are arranged on both sides of the movable die seat (51) and the fixed die seat (52), and a driving member (56) is mounted on the bottom of the side die (54); The fixed mold base (52) comprises a fixed mold body (521), the fixed mold body (521) is provided with a rectangular groove (523) and a through groove (524), wherein an inner mold locking hook (514) is mounted in the through groove (524), and the inner mold locking hook (514) is rotatably connected to the upper end of the rotating shaft (513); The side mold (54) comprises a side mold shell (541) which is arranged in a C-shape. An inner clamping member (542) which matches with the inner mold locking hook (514) is arranged at the middle position of the inner side of the side mold shell (541), and a locking groove (543) which is locked with the protruding locking block (5105) is arranged at the top. The driving member (56) comprises a first driving rod (561) and a second driving rod (562); the first driving rod (561) is rotationally connected to the first protruding column (525); the second driving rod (562) is rotationally connected to the second protruding column (5107); the other ends of the first driving rod (561) and the second driving rod (562) are connected to a connecting rod (563) via a rotating shaft; the connecting rod (563) is movably connected to the traction column (547).

2. The die-casting equipment for aluminum alloy die-casting according to claim 1, characterized in that: The movable mold base (51) comprises a movable mold body (5101), a second mold cavity (5102) is provided on the inner side of the movable mold body (5101), and a die-casting runner (5104) is provided in the middle position below the second mold cavity (5102); a stepped hole (5103) is provided through the lower end of the movable mold body (5101); second protruding columns (5107) are welded at both ends of the bottom of the movable mold body (5101), and protruding locking blocks (5105) are welded at both ends of the top of the movable mold body (5101).

3. The die-casting equipment for aluminum alloy die-casting according to claim 1, characterized in that: A first cavity (522) matching with the second cavity (5102) is formed inside the fixed mold body (521); a push plate (58) is slidably connected inside the rectangular groove (523); the push plate (58) is fixed to the slide plate via two fixing columns (59); tooth plates (510) are welded at both ends of the slide plate; and two springs (511) are provided between the slide plate and the rectangular groove (523); Each of the toothed plates (510) is respectively matched with a ratchet gear (512); the ratchet gear (512) is matched and mounted on a rotating shaft (513); the rotating shaft (513) is rotationally connected to a fixed mold body (521); a torsion spring (515) is also fixed on the rotating shaft (513), and two claws of the torsion spring (515) are engaged with the fixed mold body (521).

4. The die-casting equipment for aluminum alloy die-casting according to claim 1, characterized in that: A fixing frame (544) is welded to the inner side of the lower end of the side mold shell (541), a sliding block (545) is slidably connected inside the fixing frame (544), and tightening springs (546) are provided on both sides of the sliding block (545); a traction column (547) is welded to the bottom of the tightening spring (546).

5. The die-casting equipment for aluminum alloy die-casting according to claim 4, characterized in that: The bottom of the side mold shell (541) is provided with two sliding grooves and is slidably connected to a sliding rack (55); the sliding rack (55) is fixed on the frame body (2).

6. The die-casting equipment for aluminum alloy die-casting according to claim 2, characterized in that: A stepped shaft (57) is fitted in the stepped hole (5103), one end of the stepped shaft (57) is fixedly connected to the push plate (58), and the other end is fixedly connected to the sliding block (4); guide columns (7) are fixed at the four corners of the movable mold base (51); the guide columns (7) are slidably connected to the sliding block (4); The sliding block (4) is slidably connected to the sliding rail (3); the sliding rail (3) is fixed to the frame body (2) by countersunk bolts; the sliding block (4) is also connected to the second fixed seat (16) by a hinge mechanism (8), and a cylinder (9) is fixedly installed at the middle position of the second fixed seat (16); the cylinder rod of the cylinder (9) is fixed to the sliding block (4).

7. The die-casting equipment for aluminum alloy die-casting according to claim 6, characterized in that: The fixed mold seat (52) is fixedly connected to the first fixed seat (6); a C-shaped frame (10) is fixed on the other side of the first fixed seat (6); an injection piston assembly (12) is fixed on the outer end of the C-shaped frame (10); the injection piston assembly (12) is connected to the first mold cavity (522) on the fixed mold body (521) through an injection pipe (11).

8. The die-casting equipment for aluminum alloy die-castings according to claim 7, characterized in that: An air chamber (14) is installed above the injection piston assembly (12), and an air inlet hole is provided between the air chamber (14) and the piston cylinder in the injection piston assembly (12); a gas cylinder (13) is fixed on the top of the air chamber (14); the gas cylinder (13) is connected to a pressure reducing valve installed on the top of an inert gas bottle (15); and the inert gas bottle (15) is installed on the base (1).

9. A process for forming aluminum alloy die castings using the die casting equipment according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: mold closing. When in use, the cylinder rod of the air cylinder (9) extends to push the sliding block (4) to slide along the slide rail (3). When the sliding block (4) contacts the movable mold base (51), it drives the movable mold base (51) to slide toward the fixed mold base (52), thereby achieving mold closing. Step 2: Automatic mold locking. During the movement of the movable mold base (51), the first driving rod (561) and the second driving rod (562) arranged in an "eight" shape are closed inwardly. Under the pulling of the connecting rod (563), the side molds (54) on both sides are closed toward the movable mold base (51) and the fixed mold base (52). Since the stroke of the side molds (54) is shorter, they will first engage with the fixed mold base (52). When engaging, the torsion spring (515) drives the rotating shaft (513) to rotate according to its own torque force, so that the inner mold locking hook (514) is engaged with the inner clamping member (542); thus, the fixed mold base (52) and the side molds (54) are locked and fixed. At this time, the movable mold base (51) is still moving, and the side mold (54) is no longer moving. The traction column (547) compresses the tension spring (546) through the sliding block (545) to compensate for the displacement until the movable mold base (51) is engaged with the side mold (54). At the moment when the movable mold base (51) and the side mold (54) come into contact, the arc-shaped contour of the outer side of the protruding locking block (5105) will squeeze the arc-shaped contour of the locking groove (543), and at this time, the side mold shell (541) will slightly displace outward. After the protruding locking block (5105) and the locking groove (543) are completely engaged, the side mold shell (541) returns to its original position under the pushing of the tightening spring (546), thereby achieving the locking of the movable mold base (51) and the side mold (54). Step 3: Inert gas purging: the inert gas bottle (15) is transported to the gas cylinder (13) after being decompressed. After the solenoid valve between the gas cylinder (13) and the gas chamber (14) is opened, the inert gas enters the injection piston assembly (12) through the gas chamber (14), and then the first cavity (522) and the second cavity (5102) are purged through the injection pipe (11) to reduce air. Step 4: Injection, pouring molten alloy liquid from the injection piston assembly (12), the piston rod in the piston assembly (12) moves, pushing the liquid to flow along the injection pipe (11), thereby filling the first cavity (522) and the second cavity (5102) through the flow channel, and after cooling, the die casting is formed; Step 5: Open the mold and take out the parts. When opening the mold, the cylinder rod of the air cylinder (9) contracts, driving the sliding block (4) to move along the slide rail (3). At this time, the movable mold seat (51) and the fixed mold seat (52) are still in a locked state, and the sliding block (4) can only slide along the guide column (7). When the stepped shaft (57) drives the push plate (58) to move, the toothed plate (510) drives the ratchet gear (512) to rotate. Driven by the rotating shaft (513), the inner mold locking hook (514) deflects, thereby realizing the decoupling of the inner mold locking hook (514) and the inner clamping piece (542), and releasing the locking state of the fixed mold seat (52) and the side mold (54). Since the stepped shaft (57) moves outward, the tightening force on the movable mold base (51) is lost, and the protruding locking block (5105) and the locking groove (543) are no longer in a closed state. As the stepped shaft (57) continues to move backward, the push plate (58) drives the movable mold base (51) to slide outward. With the cooperation of the driving member (56), the two side molds (54) are opened outward along the slide (55), thereby realizing the mold opening of the equipment and facilitating the removal of the casting.

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