A die-casting device for thin-walled special-shaped aluminum alloy structural parts

Abstract

The present invention relates to a die-casting device for aluminum alloy thin-wall special-shaped structural parts in the technical field of die-casting equipment, including a base and a top plate located above the base. Vertical guide columns are provided on both sides between the base and the top plate. A lifting structure capable of moving up and down is provided between the top plate and the base. A die-casting mold capable of forming aluminum alloy thin-wall special-shaped structural parts is provided between the base and the lifting structure. Due to the two-stage design of the push rod structure in the present invention, the lower push rod that moves synchronously with the upper die can be in contact and cooperate with the fixed upper push rod, so that the lower push rod moves downward relative to the upper die, realizing the function of casting demoulding. The entire demoulding process does not require manual participation, solving the technical problem in the prior art that manual participation is required for casting demoulding.

Description

Technical Field

[0001] The invention relates to the technical field, and in particular to a die-casting device for aluminum alloy thin-walled special-shaped structural parts. Background Art

[0002] With the rapid development of industry, many places such as new electronic products and aerospace equipment are made of aluminum alloy materials. However, such thin-walled special-shaped aluminum alloy structural parts generally need to be produced by die casting.

[0003] Die casting refers to a casting method in which molten metal is filled into the mold cavity under high pressure and high speed conditions, and then cooled and molded under high pressure to form the required parts and products. Die casting molds are generally composed of two parts, namely the covering part (lower mold) and the movable part (upper mold). The covering part is usually connected to the fixed pressure plate or the front pressure plate, while the movable part is connected to the movable pressure plate. The movable part is provided with a push rod for demolding the casting. When the mold is opened, the casting will remain in the movable part, and then the casting will be pushed out by the push rod.

[0004] At present, the existing Chinese patent with publication number CN209349482U discloses an aluminum alloy die-casting device, and the Chinese patent with publication number CN112371940A discloses a die-casting device for aluminum alloy preparation. Both devices have the following defects: 1. Manual participation is required to demold the casting, and due to the high temperature of the casting and the mold just demolded, there is a risk of scalding; 2. There is no function to process the casting just demolded. Summary of the invention

[0005] The purpose of the present invention is to provide a die-casting device for aluminum alloy thin-walled special-shaped structural parts in order to solve the above-mentioned problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A die-casting device for aluminum alloy thin-walled special-shaped structural parts, comprising a base and a top plate located above the base, vertical guide pillars are arranged on both sides between the base and the top plate, a lifting structure capable of moving up and down is arranged between the top plate and the base, and a die-casting mold capable of molding aluminum alloy thin-walled special-shaped structural parts is arranged between the base and the lifting structure, characterized in that: the die-casting mold comprises a lower mold installed on the top surface of the base and an upper mold installed on the bottom surface of the lifting part of the lifting structure; the upper mold is evenly provided with a plurality of push rod structures for demolding the aluminum alloy thin-walled special-shaped structural parts at a position corresponding to the die-casting mold cavity, and a plurality of demolding holes for the push rod structures to penetrate are arranged at a position of the upper mold corresponding to the push rod structure;

[0008] The push rod structure includes an upper push rod and a lower push rod, the demolding hole is a stepped hole with a smaller upper part and a larger lower part; the lower end of the lower push rod is inserted into the large diameter section of the demolding hole, and the lower end of the lower push rod is provided with an expansion portion adapted to the large diameter section of the demolding hole, the lower push rod is provided with a limit ring at a position above the upper mold, and the lower push rod body is provided with a first compression spring at a position matching the position of the limit ring and the upper mold, an upper push rod is provided above the lower push rod and can cooperate with the lower push rod during the rising process of the upper mold, and the upper push rod is correspondingly installed on the top plate.

[0009] Preferably, the lifting structure includes a telescopic device vertically installed on the top plate, the telescopic end of the telescopic device faces downward, a mounting plate is provided at the telescopic end of the telescopic device, and the mounting plate slides up and down to cooperate with the guide column, and the upper mold is installed on the lower plate surface of the mounting plate.

[0010] Preferably, the upper end of the upper push rod is provided with an electromagnet that can be adsorbed on the lower surface of the top plate, and the lifting structure is provided with a clearance hole for the lower end of the upper push rod to pass through at the position corresponding to the upper push rod.

[0011] Preferably, the upper push rod includes an outer tube with an open lower end, the upper end of the outer tube is fixedly connected to the electromagnet, a piston plate matching the outer tube is provided inside the outer tube, and a telescopic rod with a lower end extending out of the outer tube is provided in the middle of the lower plate surface of the piston plate, a second compression spring is provided in the inner cavity of the outer tube above the piston plate, and a shrinkage structure matching the telescopic rod is provided at the open end of the outer tube.

[0012] Preferably, the height of the expanded diameter portion is smaller than the depth of the large diameter section of the demolding hole, the inner annular surface of the large diameter section of the demolding hole is a conical surface, and the aperture of the lower end of the large diameter section of the demolding hole is larger than the aperture of the upper end.

[0013] Preferably, a material receiving mechanism for receiving aluminum alloy thin-walled special-shaped structural parts after demolding is provided at a position corresponding to the die-casting mold on the rear side of the base, and the material receiving part of the material receiving mechanism is correspondingly driven and connected to the lifting part of the lifting structure, and the material receiving part of the material receiving mechanism can move forward and backward during the lifting process of the lifting part of the lifting structure.

[0014] Preferably, the material receiving mechanism includes a mounting frame installed on the rear side of the base, the upper end of the mounting frame is provided with front and rear guide rails, and the guide rail body is slidably connected with a slider along its length direction, and a material receiving plate for receiving the aluminum alloy thin-walled special-shaped structural parts after demolding is provided above the slider, and the slider is correspondingly driven and connected to the lifting part of the lifting structure.

[0015] Preferably, a driving assembly for driving the slider to slide along the length direction of the guide rail body is provided on the rear side of the lifting portion of the lifting structure.

[0016] Preferably, the driving assembly comprises a rack fixedly mounted on the rear side of the lifting part of the lifting structure, the rack is vertically arranged, and a gear meshing with the rack is arranged on the rear side of the rack, the gear axle is coaxially sleeved with a wire take-up drum, and the outer end of the wire on the wire take-up drum is correspondingly connected to the slider;

[0017] The driving assembly also includes a third compression spring, and the third compression spring is arranged between the front end of the guide rail and the sliding block.

[0018] Preferably, the material receiving plate includes a material receiving section, which is inclined up and down, and the front end of the material receiving section is higher than the rear end thereof, a horizontal section is provided at the rear end of the material receiving section, an upward flip surface is provided at the rear end of the horizontal section, and the upper plate surface of the material receiving section and the inner side surface of the flip surface are both provided with a high temperature resistant flexible layer.

[0019] The beneficial effects are:

[0020] 1. Due to the two-stage design of the push rod structure, the fixed upper push rod can be in contact with the lower push rod that rises synchronously with the upper mold, so that the lower push rod moves downward relative to the upper mold to realize the demoulding function of the casting. The entire demoulding process does not require manual participation, which solves the technical problem of manual participation in the demoulding of castings in the prior art;

[0021] 2. Due to the setting of the upper push rod, when the lower push rod rises to contact with the upper push rod, the telescopic rod squeezes the second compression spring, and the second compression spring absorbs kinetic energy and shrinks and deforms. At this time, the force between the lower push rod and the telescopic rod gradually increases and overcomes the force of the first compression spring. The rise of the lower push rod gradually slows down, and the lower push rod moves relative to the casting to realize the demoulding function of the casting. In this process, the casting is prevented from being subjected to a large instantaneous force, which causes deformation of the casting, thereby improving the production quality of the casting;

[0022] 3. Since the height of the expanded diameter portion is smaller than the depth of the large diameter section of the demoulding hole, the thickness of the casting pushed by the lower push rod is appropriately increased to prevent indentations from occurring at the position where the casting is pushed by the lower push rod, thereby further improving the quality of the casting;

[0023] 4. Due to the setting of the material receiving mechanism and the driving assembly, when the die-casting mold is opened, the lifting structure drives the rack to move upward, and then drives the gear to rotate, and the gear axle drives the wire take-up drum to rotate, and the wire take-up drum starts to take up the wire. At this time, the wire connected to the wire take-up drum drives the slider to move, and the slider moves forward along the guide rail, and the slider drives the material receiving plate to move forward, so that the material receiving plate extends to the bottom of the upper mold; in the process of demolding, the casting separates from the upper mold and falls on the material receiving plate under the action of gravity; when the mold is closed, the material receiving plate leaves and resets from the bottom of the upper mold under the action of the third compression spring, thereby realizing the unloading processing of the casting, and the structure for unloading the casting does not require additional power equipment.

[0024] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a front view of the present invention;

[0028] Figure 3 yes Figure 2 AA section view;

[0029] Figure 4 yes Figure 3 A local enlarged view of I in FIG.

[0030] Figure 5 It is a structural schematic diagram of another state of the present invention;

[0031] Figure 6 yes Figure 5 Part II of the figure is an enlarged view.

[0032] The following are the descriptions of the reference numerals:

[0033] 1. Base; 2. Guide column; 3. Top plate; 4. Lifting structure; 41. Telescopic device; 42. Mounting plate; 43. Make way hole; 5. Die-casting mold; 51. Lower mold; 52. Upper mold; 521. Demolding hole; 6. Push rod structure; 61. Upper push rod; 611. Outer cylinder; 612. Piston plate; 613. Telescopic rod; 614. Second compression spring; 615. Narrowing structure; 62. Lower push rod; 621. Diameter expansion part; 622. Limiting ring; 623. First compression spring; 63. Electromagnet; 7. Material receiving mechanism; 71. Mounting frame; 72. Guide rail; 73. Slider; 74. Material receiving plate; 741. Material receiving section; 742. Horizontal section; 743. Turn over; 8. Driving assembly; 81. Rack; 82. Gear; 83. Take-up reel; 84. Third compression spring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0036] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] Embodiment 1, as Figure 1-4 As shown, a die-casting device for aluminum alloy thin-walled special-shaped structural parts comprises a base 1 and a top plate 3 located above the base 1, vertical guide pillars 2 are arranged on both sides between the base 1 and the top plate 3, a lifting structure 4 capable of moving up and down is arranged between the top plate 3 and the base 1, a die-casting mold 5 capable of molding aluminum alloy thin-walled special-shaped structural parts is arranged between the base 1 and the lifting structure 4, the die-casting mold 5 comprises a lower mold 51 installed on the top surface of the base 1 and an upper mold 52 installed on the bottom surface of the lifting part of the lifting structure 4; a plurality of push rod structures 6 for demolding the aluminum alloy thin-walled special-shaped structural parts are evenly arranged at positions of the upper mold 52 corresponding to the positions of the push rod structures 6, and a plurality of demolding holes 521 for the push rod structures 6 to penetrate are arranged at positions of the upper mold 52 corresponding to the push rod structures 6;

[0042] Specifically, the die-casting mold 5 is designed according to conventional techniques in the prior art in which the casting remains in the active part after the mold is opened.

[0043] like Figure 4 As shown, the push rod structure 6 includes an upper push rod 61 and a lower push rod 62, and the demolding hole 521 is a stepped hole with a smaller upper part and a larger lower part; the lower end of the lower push rod 62 is correspondingly inserted into the large diameter section of the demolding hole 521, and the lower end of the lower push rod 62 is provided with an expansion portion 621 adapted to the large diameter section of the demolding hole 521, the lower push rod 62 is located above the upper mold 52 and is provided with a limit ring 622, and the lower push rod 62 is located between the limit ring 622 and the upper mold 52 and is matched with a first compression spring 623, and an upper push rod 61 is provided above the lower push rod 62, which can abut and cooperate with the lower push rod 62 during the rising process of the upper mold 52, and the upper push rod 61 is correspondingly installed on the top plate 3.

[0044] With such arrangement, when working or not working, the limiting ring 622 is supported by the elastic force of the first compression spring 623, so that the lower push rod 62 has a tendency to move upward, thereby enabling the top surface of the expanded diameter portion 621 to tightly rest against the step surface of the demolding hole 521, so that the lower push rod 62 will not affect the normal use of the die-casting mold 5.

[0045] When the mold is opened, the upper mold 52 is driven to rise by the lifting structure 4. Due to the fixed position of the lower mold 51 and the design of the die-casting mold 5, the upper mold 52 carries the aluminum alloy thin-walled special-shaped structural casting to rise, thus realizing the function of mold opening;

[0046] During demoulding, the upper mold 52 continues to be driven up by the lifting structure 4, and the upper mold 52 drives the lower push rod 62 to rise. At this time, the lower push rod 62 gradually approaches the upper push rod 61. When the lower push rod 62 and the upper push rod 61 collide with each other, the lifting structure 4 continues to drive the upper mold 52 to rise. At this time, the lower push rod 62 no longer rises. The lower push rod 62 blocks the aluminum alloy thin-walled special-shaped structural parts casting from rising, and the aluminum alloy thin-walled special-shaped structural parts casting can be separated from the upper mold 52, thereby realizing the demoulding function.

[0047] In some embodiments, Figure 1-3 As shown, the lifting structure 4 includes a telescopic device 41 vertically installed on the top plate 3, the telescopic end of the telescopic device 41 faces downward, a mounting plate 42 is provided at the telescopic end of the telescopic device 41, and the mounting plate 42 slides up and down to cooperate with the guide column 2, and an upper mold 52 is installed on the lower plate surface of the mounting plate 42.

[0048] When in use, the telescopic device 41 can be used to drive the mounting plate 42 to move up and down, thereby driving the upper mold 52 to move up and down, thereby realizing the function of closing or opening the die-casting mold 5.

[0049] Embodiment 2, based on embodiment 1, as Figure 4 As shown, in order to facilitate the movement of the upper push rod 61, an electromagnet 63 capable of being adsorbed on the lower surface of the top plate 3 is provided at the upper end of the upper push rod 61, and a clearance hole 43 for the lower end of the upper push rod 61 to penetrate is provided at the position corresponding to the upper push rod 61 of the lifting structure 4;

[0050] Further, such as Figure 4 As shown, the mounting plate 42 is provided with a clearance hole 43 for the lower end of the upper push rod 61 to pass through.

[0051] This arrangement allows different die-casting molds 5 to be selected according to the model or type of the castings actually produced, and then the position of the upper push rod 61 is moved according to the position of the lower push rod 62 on the die-casting mold 5 .

[0052] In some embodiments, the clearance hole 43 may be a bar-shaped hole, the diameter of which is much larger than the diameter of the upper push rod 61 , so as to ensure that the upper push rod 61 can work normally after being moved.

[0053] In some embodiments, Figure 3 As shown, the mounting plate 42 is provided with a mounting groove, and a mounting top plate is provided on the top of the upper mold 52, and the mounting top plate is installed in the mounting groove. The mounting top plate is provided with a clearance hole 43. At this time, the clearance hole 43 can correspond to the upper push rod 61, that is, the aperture of the clearance hole 43 can be adapted to the diameter of the upper push rod 61; in this way, the upper push rod 61 located in the correct position is always in a coaxial state with the clearance hole 43, so the aperture of the clearance hole 43 can be adapted to the diameter of the upper push rod 61.

[0054] Embodiment 3, based on embodiment 1, Figure 4 As shown, in order to prevent a large instantaneous force from being generated between the lower push rod 62 and the aluminum alloy thin-walled special-shaped structural casting, the upper push rod 61 is designed as an elastic telescopic structure. Specifically, the upper push rod 61 includes an outer cylinder 611 with an open lower end, the upper end of the outer cylinder 611 is correspondingly fixed to the electromagnet 63, a piston plate 612 matching it is provided inside the outer cylinder 611, and a telescopic rod 613 with a lower end extending out of the outer cylinder 611 is provided in the middle of the lower plate surface of the piston plate 612, a second compression spring 614 is provided in the inner cavity of the outer cylinder 611 above the piston plate 612, and a shrinkage structure 615 matching the telescopic rod 613 is provided at the open end of the outer cylinder 611.

[0055] During use, when the lower push rod 62 rises to contact with the upper push rod 61, the telescopic rod 613 squeezes the second compression spring 614, and the second compression spring 614 absorbs kinetic energy and shrinks and deforms. At this time, the action force between the lower push rod 62 and the telescopic rod 613 gradually increases and overcomes the action force of the first compression spring 623. The rise of the lower push rod 62 gradually slows down, and the lower push rod 62 moves relative to the aluminum alloy thin-walled special-shaped structural part casting, thereby realizing the demolding function of the aluminum alloy thin-walled special-shaped structural part casting.

[0056] Embodiment 4, based on embodiment 1, Figure 4 As shown, in order to further improve the quality of aluminum alloy thin-walled special-shaped structural castings, the height of the expanded diameter portion 621 is less than the depth of the large diameter section of the demolding hole 521, the inner annular surface of the large diameter section of the demolding hole 521 is a conical surface, and the aperture of the lower end of the large diameter section of the demolding hole 521 is greater than the aperture of the upper end;

[0057] Specifically, the taper of the inner annular surface of the large diameter section of the demoulding hole 521 is 3-5 degrees, and 5 degrees is adopted in this embodiment;

[0058] Specifically, the height difference between the enlarged diameter portion 621 and the depth of the large diameter section of the demoulding hole 521 is 0.5-1 mm;

[0059] Specifically, the enlarged diameter portion 621 matches the inner end portion of the large diameter section of the demoulding hole 521 .

[0060] Such an arrangement can appropriately increase the excess thickness of the aluminum alloy thin-walled special-shaped structural part casting, that is, appropriately increase the thickness of the aluminum alloy thin-walled special-shaped structural part casting pushed by the lower push rod 62, prevent the aluminum alloy thin-walled special-shaped structural part casting from having indentations at the position where the aluminum alloy thin-walled special-shaped structural part casting is pushed by the lower push rod 62, and further improve the quality of the aluminum alloy thin-walled special-shaped structural part casting.

[0061] Embodiment 5, based on embodiment 1, Figure 3 and 5 -6, a receiving mechanism 7 for receiving the aluminum alloy thin-walled special-shaped structural parts after demolding is provided at the position corresponding to the die-casting mold 5 on the rear side of the base 1, and the receiving part of the receiving mechanism 7 is correspondingly driven and connected to the lifting part of the lifting structure 4, and the receiving part of the receiving mechanism 7 can move forward and backward during the lifting process of the lifting part of the lifting structure 4.

[0062] Further, such as Figure 3 and 5 As shown, the material receiving mechanism 7 includes a mounting frame 71 installed on the rear side of the base 1, and a guide rail 72 is provided at the upper end of the mounting frame 71, and a slider 73 is slidably connected to the guide rail 72 along its length direction. A material receiving plate 74 for receiving the aluminum alloy thin-walled special-shaped structural parts after demolding is provided above the slider 73, and the slider 73 is correspondingly driven and connected to the lifting part of the lifting structure 4.

[0063] Furthermore, a driving assembly 8 is provided at the rear side of the lifting part of the lifting structure 4 for driving the slider 73 to slide along the length direction of the guide rail 72;

[0064] As needed, such as Figure 3 and 5 -6, the driving assembly 8 includes a rack 81 fixedly mounted on the rear side of the lifting part of the lifting structure 4, the rack 81 is vertically arranged, and a gear 82 meshing with the rack 81 is arranged on the rear side, the gear 82 is coaxially sleeved with a take-up drum 83, and the outer end of the wire on the take-up drum 83 is correspondingly connected to the slider 73;

[0065] Specifically, the axle of the gear 82 is rotatably connected to the base 1 through the bracket, that is, the bracket is installed on the base 1, and the axle of the gear 82 is rotatably connected to the bracket;

[0066] The driving assembly 8 further includes a third compression spring 84 , which is disposed between the front end of the guide rail 72 and the slider 73 .

[0067] In some embodiments, Figure 3 and 5 As shown, in order to ensure the stability of the receiving plate 74 , two guide rails 72 and driving assemblies 8 are provided, which are respectively located on both sides of the receiving plate 74 .

[0068] When in use, the lifting structure 4 drives the upper mold 52 to rise to complete the mold opening and demoulding operations. During the mold opening process, the lifting structure 4 drives the rack 81 to move upward, thereby driving the gear 82 to rotate, and the gear 82 axle drives the wire take-up drum 83 to rotate, and the wire take-up drum 83 starts to take up the wire. At this time, the wire connected to the wire take-up drum 83 drives the slider 73 to move, and the slider 73 moves forward along the guide rail 72. The slider 73 drives the receiving plate 74 to move forward, so that the receiving plate 74 extends to the bottom of the upper mold 52; during the demoulding process, the aluminum alloy thin-walled special-shaped structural casting is separated from the upper mold 52 and falls on the receiving plate 74 under the action of gravity;

[0069] When the mold is closed, that is, the lifting structure 4 drives the upper mold 52 to descend, the lifting structure 4 drives the rack 81 to descend, and then drives the gear 82 to rotate in the opposite direction, and the gear 82 axle drives the wire take-up drum 83 to rotate in the opposite direction, and the wire take-up drum 83 starts to pay out the wire. At this time, the slider 73 starts to reset under the action of the third compression spring 84, and the slider 73 moves backward along the guide rail 72. The slider 73 drives the receiving plate 74 to start resetting, so that the receiving plate 74 leaves from the bottom of the upper mold 52.

[0070] In some embodiments, Figure 3 As shown, the material receiving plate 74 includes a material receiving section 741, which is inclined up and down, and the front end of the material receiving section 741 is higher than the rear end thereof, a horizontal section 742 is provided at the rear end of the material receiving section 741, and an upward flip surface 743 is provided at the rear end of the horizontal section 742, and the upper plate surface of the material receiving section 741 and the inner side surface of the flip surface 743 are both provided with a high temperature resistant flexible layer.

[0071] When in use, the receiving section 741 receives the aluminum alloy thin-walled special-shaped structural casting, and the aluminum alloy thin-walled special-shaped structural casting moves to the horizontal section 742 under the action of gravity, that is, moves to the rear end of the receiving plate 74, making it convenient for the staff of the next process to take the material.

[0072] As required, a device for accelerating the heat dissipation of the aluminum alloy thin-walled special-shaped structural casting, such as a fan, a spray device or an oil injection device, etc., may be provided above the receiving plate 74 .

[0073] In some embodiments, a material receiving box may be provided at the front end of the material receiving plate 74 .

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A die-casting device for aluminum alloy thin-walled special-shaped structural parts, comprising a base (1) and a top plate (3) located above the base (1), vertical guide pillars (2) are arranged on both sides between the base (1) and the top plate (3), a lifting structure (4) capable of moving up and down is arranged between the top plate (3) and the base (1), and a die-casting mold (5) capable of molding the aluminum alloy thin-walled special-shaped structural parts is arranged between the base (1) and the lifting structure (4), Features: The die-casting mold (5) comprises a lower mold (51) mounted on the top surface of the base (1) and an upper mold (52) mounted on the bottom surface of the lifting part of the lifting structure (4); the upper mold (52) is evenly provided with a plurality of push rod structures (6) for demoulding the aluminum alloy thin-walled special-shaped structural parts at positions corresponding to the die-casting mold (5) cavity, and the upper mold (52) is provided with a plurality of demoulding holes (521) for the push rod structures (6) to pass through at positions corresponding to the push rod structures (6); The push rod structure (6) comprises an upper push rod (61) and a lower push rod (62); the demoulding hole (521) is a stepped hole with a smaller upper portion and a larger lower portion; the lower end of the lower push rod (62) is correspondingly inserted into the large diameter section of the demoulding hole (521), and the lower end of the lower push rod (62) is provided with an expanded diameter portion (621) adapted to the large diameter section of the demoulding hole (521); a position of the lower push rod (62) located above the upper mold (52) is provided with a limit ring (622), and a position of the lower push rod (62) located between the limit ring (622) and the upper mold (52) is matched with a first compression spring (623); an upper push rod (61) is provided above the lower push rod (62) and can abut against and cooperate with the lower push rod (62) during the ascending process of the upper mold (52), and the upper push rod (61) is correspondingly installed on the top plate (3); A receiving mechanism (7) for receiving the aluminum alloy thin-walled special-shaped structural part after demoulding is provided at a position corresponding to the die-casting mold (5) on the rear side of the base (1), and the receiving part of the receiving mechanism (7) is correspondingly driven and connected to the lifting part of the lifting structure (4), and the receiving part of the receiving mechanism (7) can move forward and backward during the lifting process of the lifting part of the lifting structure (4); The material receiving mechanism (7) comprises a mounting frame (71) mounted on the rear side of the base (1), the upper end of the mounting frame (71) is provided with guide rails (72) arranged in front and rear, and the guide rail (72) is slidably connected to a slider (73) along its length direction, and a material receiving plate (74) for receiving the aluminum alloy thin-walled special-shaped structural part after demoulding is provided above the slider (73), and the slider (73) is correspondingly driven and connected to the lifting part of the lifting structure (4); A driving assembly (8) is provided on the rear side of the lifting part of the lifting structure (4) for driving the sliding block (73) to slide along the length direction of the guide rail (72); The driving assembly (8) comprises a rack (81) fixedly mounted on the rear side of the lifting part of the lifting structure (4), the rack (81) being arranged vertically, and a gear (82) meshing with the rack (81) being arranged on the rear side, the gear (82) being coaxially sleeved with a wire take-up drum (83), and the outer end of the wire on the wire take-up drum (83) being correspondingly connected to the slider (73); The driving assembly (8) further comprises a third compression spring (84), wherein the third compression spring (84) is arranged between the front end of the guide rail (72) and the sliding block (73).

2. A die-casting device for aluminum alloy thin-walled special-shaped structural parts according to claim 1, Features: The lifting structure (4) comprises a telescopic device (41) vertically mounted on the top plate (3), the telescopic end of the telescopic device (41) facing downward, a mounting plate (42) being provided at the telescopic end of the telescopic device (41), and the mounting plate (42) being slidably matched with the guide column (2) up and down, and the upper mold (52) being mounted on the lower plate surface of the mounting plate (42).

3. The die-casting equipment for aluminum alloy thin-walled special-shaped structural parts according to claim 1, Features: The upper end of the upper push rod (61) is provided with an electromagnet (63) capable of being adsorbed on the lower surface of the top plate (3), and the lifting structure (4) is provided with a clearance hole (43) for the lower end of the upper push rod (61) to pass through at a position corresponding to the upper push rod (61).

4. The die-casting equipment for aluminum alloy thin-walled special-shaped structural parts according to claim 3, Features: The upper push rod (61) includes an outer tube (611) with an open lower end, the upper end of the outer tube (611) is fixedly connected to the electromagnet (63), a piston plate (612) matching the outer tube (611) is provided inside the outer tube (611), and a telescopic rod (613) with a lower end extending out of the outer tube (611) is provided in the middle of the lower plate surface of the piston plate (612), a second compression spring (614) is provided in the inner cavity of the outer tube (611) above the piston plate (612), and a constriction structure (615) matching the telescopic rod (613) is provided at the open end of the outer tube (611).

5. The die-casting equipment for aluminum alloy thin-walled special-shaped structural parts according to claim 1, Features: The height of the expanded diameter portion (621) is less than the depth of the large diameter section of the demoulding hole (521), the inner annular surface of the large diameter section of the demoulding hole (521) is a conical surface, and the aperture of the lower end of the large diameter section of the demoulding hole (521) is greater than the aperture of the upper end.

6. The die-casting equipment for aluminum alloy thin-walled special-shaped structural parts according to claim 1, Features: The material receiving plate (74) comprises a material receiving section (741), the material receiving section (741) is arranged to be inclined up and down, and the front end of the material receiving section (741) is higher than the rear end thereof, the rear end of the material receiving section (741) is provided with a horizontal section (742), the rear end of the horizontal section (742) is provided with an upward turning surface (743), and the upper plate surface of the material receiving section (741) and the inner side surface of the turning surface (743) are both provided with a high temperature resistant flexible layer.

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