Die-casting die for lightweight component

Abstract

The invention discloses a die-casting die for a lightweight component, and belongs to the technical field of die-casting dies, the die-casting die comprises a movable die holder and a fixed die holder, a pouring hole is formed in the fixed die holder in a penetrating manner, and a liquid rotating groove communicated with the pouring hole is formed in the side, located on the movable die holder, of the fixed die holder. Through the arrangement of the heat conduction right-angle glass tube and the multiple liquid rotating arc plates, the principle structure of a Stirling engine can be utilized, heat energy of injected metal liquid is converted into mechanical energy of rotation of the autorotation gear, the pressed metal liquid has larger power flowing towards the edge, the flowing direction of liquid vortex is uncertain, and the heat conduction effect is good. Meanwhile, through the arrangement of a plurality of transition pipes and a unified valve assembly, cooling water in an outer cooling ring pipe can be controlled to flow into an inner cooling ring pipe and a staggered net pipe from multiple directions at the same time through the cooperation of a guide hopper and a transition valve plug in the transition pipes, and therefore the cooling effect of the inner cooling ring pipe and the staggered net pipe is improved. And synchronous cooling of multiple parts of the aluminum alloy component is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of die casting molds, and in particular to a die casting mold for a lightweight component. Background Art

[0002] The die-casting mold is a tool for casting metal parts. Its basic process flow is: the molten metal is first cast into the mold cavity at a low or high speed. The mold has a movable cavity surface, which is pressurized and forged as the molten metal cools, which not only eliminates the shrinkage defects of the blank, but also makes the internal structure of the blank reach the broken grains in the forged state.

[0003] Lightweight components are generally produced by die-casting of aluminum alloy materials. The melting point of aluminum alloy materials is usually around 600°C. This means that after the aluminum alloy solution is die-cast in the die-casting mold, when the cooling water flows to cool it, the aluminum alloy component at the cooling water outflow position is cooled first. Due to its low melting point, if the aluminum alloy component is large, the aluminum alloy component at the starting flow position has already produced a relatively large temperature difference with other parts before the cooling water starts to flow and circulate completely, which makes the component prone to dimensional instability, structural deformation and other problems. In addition, some components have local protrusions or structures with small rounded corners during production, which makes it difficult for the metal solution to completely fill the mold cavity after injection, which in turn causes the die-cast component to be prone to cold line defects. Therefore, a die-casting mold for lightweight components is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the aluminum alloy component at the cooling water outflow position is cooled first. Due to its low melting point, if the aluminum alloy component is large, the aluminum alloy component at the starting flow position has already produced a relatively large temperature difference with other parts before the cooling water starts to flow and circulate completely, which makes the component prone to dimensional instability, structural deformation and other problems, and some components have local protrusions or structures with small rounded corners during production, which makes it difficult for the metal solution to completely fill the mold cavity after injection. A die-casting mold for lightweight components is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A die-casting mold for a lightweight component, comprising a movable mold base and a fixed mold base, wherein a pouring hole is penetrated through the fixed mold base, wherein a liquid spinning groove interconnected with the pouring hole is provided on a side of the movable mold base, wherein a heat-conducting right-angle glass tube is provided on one side of the pouring hole, wherein a piston tube is connected to the lower end of the heat-conducting right-angle glass tube through a heat dissipation tube, wherein the heat dissipation tube and the piston tube are respectively connected to two eccentric shafts through a partition plate and a piston plate, wherein the two eccentric shafts are respectively connected to a self-rotating gear through two swinging gears, wherein a liquid spinning component for allowing metal liquid to escape to the surroundings is provided on one side of the self-rotating gear;

[0007] Two outer cooling ring tubes and two inner cooling ring tubes are arranged in the movable mold base, and are arranged in two layers, the outer cooling ring tubes are connected to the inner cooling ring tubes through multiple transition tubes, and unified valve assemblies in opposite directions are respectively arranged in two adjacent transition tubes. The inner side of the inner cooling ring tube located at the bottom is provided with a staggered mesh pipe for cooling the end face of the component.

[0008] Preferably, the heat-conducting right-angle glass tube is fixedly arranged in the fixed mold base, the heat-conducting right-angle glass tube is connected with the heat dissipation tube, and the side wall of the heat dissipation tube is connected with the piston tube through a connecting tube.

[0009] Preferably, the partition is arranged in the heat dissipation tube, the side wall of the piston plate is slidingly connected to the inner wall of the piston tube, the partition is rotationally connected to the swing gear through an eccentric shaft, the piston plate is rotationally connected to the swing gear through an eccentric shaft, the bottom ends of the two swing gears are rotationally connected to the fixed mold seat through a fixed seat, and the two swing gears are meshed with each other.

[0010] Preferably, the bottom end of the swing gear located on one side of the heat dissipation pipe is fixedly connected to the top end of the self-rotating gear through a fixed shaft, and the self-rotating gear is meshingly connected with a driven gear ring, and the driven gear ring is arranged on the periphery of the pouring hole.

[0011] Preferably, the liquid spinning assembly consists of a liquid spinning ring and multiple liquid spinning arc plates, the bottom end of the driven gear ring is fixedly connected to the top of the liquid spinning ring through a fixed tube, the inner side wall of the liquid spinning ring is fixedly connected to the side walls of multiple liquid spinning arc plates, and the liquid spinning ring is rotatably connected to the inner side wall of the liquid spinning groove on the fixed mold base.

[0012] Preferably, three liquid inlet pipes are fixedly connected to one side of the external cooling ring pipe, and are interconnected. The external cooling ring pipe located on the upper layer is arranged on the outside of the edge of the core of the movable mold base, and the external cooling ring pipe located on the lower layer is arranged on the outside of the end face of the core of the movable mold base. The external cooling ring pipe located on the upper layer is interconnected with the external cooling ring pipe located on the lower layer through multiple flow pipes.

[0013] Preferably, the unified valve assembly consists of a guide bucket and a transition valve plug, the inner wall of the transition pipe is fixedly connected with a flow orifice plate, the end of the flow orifice plate is fixedly connected to the large-diameter end of the guide bucket, the end of the flow orifice plate is fixedly connected to the side wall of the transition valve plug through a return spring, the transition valve plug is arranged at the small-diameter end of the guide bucket, and the diameter of the transition valve plug is slightly larger than the inner diameter of the small-diameter end of the guide bucket.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can utilize the principle structure of the Stirling engine by setting up a heat-conducting right-angle glass tube and a plurality of liquid swirl arc plates, and can convert the thermal energy of the injected metal liquid into the mechanical energy of the rotation of the self-rotating gear, so that the pressed metal liquid has a greater power to flow toward the edge. The flow direction of the liquid vortex is uncertain, and it is easier to pass through and fill the local protrusions and areas with smaller fillets of the component. Compared with the current method of simply relying on pressure to compress the flow of the liquid, the filling effect is better and the filling efficiency is higher.

[0016] 2. The present invention, through the arrangement of multiple transition pipes and a unified valve assembly, can utilize the cooperation of the guide bucket and the transition valve plug in the transition pipe to control the cooling water in the outer cooling ring pipe to flow into the inner cooling ring pipe and the staggered network pipe from multiple directions at the same time, thereby achieving synchronous cooling of multiple parts of the aluminum alloy component and avoiding large temperature differences in different parts of the aluminum alloy component with a lower melting point during cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a die-casting mold for a lightweight component proposed by the present invention;

[0018] Figure 2 An exploded view of a die-casting mold for a lightweight component proposed by the present invention;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 A structural schematic diagram of the positions of an outer cooling ring pipe and an inner cooling ring pipe in a die-casting mold of a lightweight component proposed by the present invention;

[0021] Figure 5 A schematic diagram of the structure of the staggered mesh pipe positions in a die-casting mold for a lightweight component proposed by the present invention;

[0022] Figure 6 A structural schematic diagram of a uniform position of a valve assembly and a transition pipe in a die-casting mold of a lightweight component proposed by the present invention;

[0023] Figure 7 A structural schematic diagram of a unified valve assembly in a die-casting mold of a lightweight component proposed by the present invention;

[0024] Figure 8 A structural schematic diagram of the positions of the self-rotating gear and the driven gear ring in a die-casting mold of a lightweight component proposed by the present invention

[0025] Fig. 9 A structural schematic diagram of the positions of a partition plate and a piston plate in a die-casting mold of a lightweight component proposed by the present invention;

[0026] Fig.10A structural schematic diagram of the flow direction of hot and cold gases between a heat dissipation pipe and a piston tube in a die-casting mold of a lightweight component proposed by the present invention;

[0027] Fig.11 The present invention is a schematic structural diagram of a hydro-spinning assembly in a die-casting mold for a lightweight component.

[0028] In the figure: 1. movable mold base; 2. fixed mold base; 3. pouring hole; 4. heat-conducting right-angle glass tube; 5. heat dissipation pipe; 6. piston tube; 7. partition; 8. eccentric shaft; 9. piston plate; 10. swing gear; 11. self-rotating gear; 12. driven gear ring; 13. fixed cylinder; 14. swirl ring; 15. swirl arc plate; 16. liquid inlet pipe; 17. external cooling ring pipe; 18. transition pipe; 19. internal cooling ring pipe; 20. staggered mesh pipe; 21. circulation orifice plate; 22. guide bucket; 23. reset spring; 24. transition valve plug; 25. fixed shaft. DETAILED DESCRIPTION

[0029] 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 only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example, see Figures 1 to 11A die-casting mold for a lightweight component includes a movable mold base 1 and a fixed mold base 2. A pouring hole 3 is penetrated on the fixed mold base 2. A liquid spinning tank interconnected with the pouring hole 3 is opened on the fixed mold base 2 at one side of the movable mold base 1. A heat-conducting right-angle glass tube 4 is arranged on one side of the pouring hole 3. The lower end of the heat-conducting right-angle glass tube 4 is connected to a piston tube 6 through a heat dissipation tube 5. The heat dissipation tube 5 and the piston tube 6 are respectively connected to two eccentric shafts 8 through a partition plate 7 and a piston plate 9. The two eccentric shafts 8 are respectively connected to a self-rotating gear 11 through two swing gears 10. The eccentric shaft 8 is eccentrically arranged on the swing gear 10, so as to drive the self-rotating gear 11 to rotate by utilizing the principle structure of the Stirling engine, wherein the thermal expansion and contraction principle of air is utilized to make the partition plate 7 and the piston plate 9 continuously move forward and backward, thereby driving the two eccentric shafts 8 to swing on the two swing gears 10 respectively, so that the two swing gears 10 keep synchronous meshing rotation, and the rotation of the swing gear 10 will drive the self-rotating gear 11 to rotate together, and a liquid spinning component for allowing the metal liquid to escape to the surrounding is provided on one side of the self-rotating gear 11;

[0033] Further, the heat-conducting right-angle glass tube 4 is fixedly arranged in the fixed mold seat 2, the heat-conducting right-angle glass tube 4 is connected with the heat dissipation tube 5, the side wall of the heat dissipation tube 5 is connected with the piston tube 6 through the connecting tube, the partition 7 is arranged in the heat dissipation tube 5, the side wall of the piston plate 9 is slidably connected with the inner wall of the piston tube 6, the partition 7 is rotatably connected with the swing gear 10 through the eccentric shaft 8, the piston plate 9 is rotatably connected with the swing gear 10 through the eccentric shaft 8, the bottom ends of the two swing gears 10 are rotatably connected with the inner chamber of the fixed mold seat 2 through the fixed seat, and the two swing gears 10 Meshing with each other, the bottom end of the swing gear 10 located on one side of the heat dissipation tube 5 is fixedly connected to the top of the self-rotating gear 11 through a fixed shaft 25, the self-rotating gear 11 is meshed with a driven gear ring 12, the driven gear ring 12 is arranged on the periphery of the pouring hole 3, the liquid spinning assembly is composed of a liquid spinning ring 14 and a plurality of liquid spinning arc plates 15, the bottom end of the driven gear ring 12 is fixedly connected to the top of the liquid spinning ring 14 through a fixed cylinder 13, the inner side wall of the liquid spinning ring 14 is fixedly connected to the side walls of the plurality of liquid spinning arc plates 15, and the liquid spinning ring 14 is rotatably connected to the inner side wall of the liquid spinning groove on the fixed mold seat 2;

[0034] It should be noted that: the fixed die base 2 is fixed on the fixed die mounting plate of the die casting machine, wherein the pouring hole 3 far away from the movable die base 1 is connected to the injection part, and the movable die base 1 is installed on the middle plate of the die casting machine, and is closed or separated from the fixed die base 2 as the middle plate of the machine moves. During the die casting process, the aluminum alloy solution is pressed into the mold center of the movable die base 1 and the fixed die base 2 through the pouring hole 3;

[0035] When the high-temperature aluminum alloy solution flows in the pouring hole 3, it will transfer heat to the heat-conducting right-angle glass tube 4 on one side, so that the air in the heat-conducting right-angle glass tube 4 expands due to the heat. The expanded hot air flow pushes the partition 7 forward, and part of the hot air flow passes through the annular edge space between the partition 7 and the heat dissipation tube 5 into the piston tube 6, pushing the piston plate 9 forward. The hot air flow flows to the heat dissipation tube 5 section, and most of the heat of the air flow will be dissipated by the heat dissipation tube 5 that is easy to dissipate heat. Then, the cold and hot air flows before and after the partition 7 can be exchanged. After the hot air flow is exchanged to the front of the partition 7, the gas expansion pushes the partition 7 backward. When the partition 7 is at the rear, it will isolate most of the heat sources, so that The gas in the piston tube 6 cools and contracts, causing the piston plate 9 to move backward. The continuous forward and backward movement of the partition plate 7 and the piston plate 9 will swing on the two swing gears 10 through the two eccentric shafts 8, respectively, so that the two swing gears 10 keep synchronous meshing and rotating. The rotation of the swing gear 10 will drive the self-rotating gear 11 to rotate together, and the self-rotating gear 11 will drive the meshing driven gear ring 12 to rotate. The rotation of the driven gear ring 12 will drive the liquid spinning ring 14 to rotate through the fixed cylinder 13, thereby driving multiple liquid spinning arc plates 15 to rotate in the liquid spinning groove of the fixed mold base 2, so that the metal liquid pressed into the center of the mold of the movable mold base 1 and the fixed mold base 2 generates eddy currents, which have the initial power to flow to the edge;

[0036] The above benefits are: this allows the pressed metal liquid to have a greater driving force to flow toward the edge, the flow direction of the liquid vortex is uncertain, and it is easier to pass through and fill the local protrusions and areas with small rounded corners of the component. Compared with the current method of simply relying on pressure to push the liquid flow, the filling effect is better and the filling efficiency is higher;

[0037] Two outer cooling ring pipes 17 and two inner cooling ring pipes 19 are arranged in the movable mold base 1, and are arranged in two layers, the outer cooling ring pipes 17 are connected with the inner cooling ring pipes 19 through multiple transition pipes 18, and two adjacent transition pipes 18 are respectively provided with unified valve assemblies in opposite directions, and the inner side of the inner cooling ring pipe 19 located at the bottom is provided with a staggered mesh pipe 20 for cooling the end face of the component;

[0038] Furthermore, three liquid inlet pipes 16 are fixedly connected to one side of the outer cooling ring pipe 17, and are interconnected. The outer cooling ring pipe 17 located at the upper layer is arranged on the outer side of the core edge of the movable mold base 1, and the outer cooling ring pipe 17 located at the lower layer is arranged on the outer side of the core end face of the movable mold base 1. The outer cooling ring pipe 17 located at the upper layer is interconnected with the outer cooling ring pipe 17 located at the lower layer through multiple flow pipes. The unified valve assembly consists of a guide bucket 22 and a transition valve plug 24. A flow orifice plate 21 is fixedly connected to the inner side wall of the transition pipe 18. The end of the flow orifice plate 21 is fixedly connected to the large-diameter end of the guide bucket 22. The end of the flow orifice plate 21 is fixedly connected to the side wall of the transition valve plug 24 through a reset spring 23. The transition valve plug 24 is arranged at the small-diameter end of the guide bucket 22, and the diameter of the transition valve plug 24 is slightly larger than the inner diameter of the small-diameter end of the guide bucket 22.

[0039] It should be noted that: when cooling is required after die-casting, the cooling water pipes are respectively connected to the liquid inlet pipes 16 on the movable mold base 1, so that the cooling water can continuously flow into the outer cooling ring pipe 17. At this time, the transition valve plug 24 in the transition pipe 18 that initially contacts the cooling water is always pulled by the return spring 23 and pressed on the small-diameter end of the guide bucket 22 due to the low hydraulic pressure, so that the transition pipe 18 cannot flow. After the upper and lower outer cooling ring pipes 17 are filled with cooling water, as the cooling water is continuously injected, the transition valve plug 24 gradually becomes the largest due to the hydraulic pressure, thereby stretching the return spring 23, so that a gap is generated between the transition valve plug 24 and the small-diameter end of the guide bucket 22, allowing the cooling water to flow through multiple transition pipes 18 to the inner cooling ring pipe 19 and the staggered mesh pipe 20 at the same time, so as to achieve synchronous cooling of various parts of the die-cast component, and the cooling water flows out through the unified valve assembly set in the opposite direction in the transition pipe 18, and then flows out through the liquid inlet pipe 16 that is not connected to the cooling water pipe, so as to achieve circulating cooling of the cooling water;

[0040] The above advantages are: in this way, the cooperation of the guide bucket 22 and the transition valve plug 24 in the transition pipe 18 can be used to control the cooling water in the outer cooling ring pipe 17 to flow into the inner cooling ring pipe 19 and the staggered network pipe 20 from multiple directions at the same time, so as to achieve synchronous cooling of multiple parts of the aluminum alloy component, and avoid the situation where the temperature difference between different parts of the aluminum alloy component with a lower melting point is large during cooling;

[0041] When the present invention is used, the fixed die base 2 is fixed on the fixed die mounting plate of the die casting machine, wherein the pouring hole 3 far away from the movable die base 1 is connected to the injection part, and the movable die base 1 is installed on the middle plate of the die casting machine, and is closed or separated from the fixed die base 2 as the middle plate of the machine moves. During the die casting process, the aluminum alloy solution is pressed into the mold center of the movable die base 1 and the fixed die base 2 through the pouring hole 3;

[0042] See attached Figure 8 , Attachment Fig. 9 and attached Fig.10During the flow of the high-temperature aluminum alloy solution in the pouring hole 3, the heat will be transferred to the heat-conducting right-angle glass tube 4 on one side, so that the air in the heat-conducting right-angle glass tube 4 will expand due to the heat. The expanded hot air flow pushes the partition 7 forward, and part of the hot air flow passes through the annular edge space between the partition 7 and the heat dissipation tube 5 into the piston tube 6, pushing the piston plate 9 forward. The hot air flow flows to the heat dissipation tube 5 section, and most of the heat of the air flow will be dissipated by the heat dissipation tube 5 that is easy to dissipate heat. Then, the hot and cold air flows before and after the partition 7 can be exchanged. After the hot air flow is exchanged to the front of the partition 7, the gas expansion pushes the partition 7 to move backward. When the partition 7 is at the rear, it will isolate most of the heat sources, so that the gas in the piston tube 6 cools and contracts, causing the piston plate 9 to move backward. The continuous forward and backward movement of the partition 7 and the piston plate 9 will pass through the two eccentric shafts 8 The two swing gears 10 are swung respectively to keep the two swing gears 10 in synchronous meshing rotation. The rotation of the swing gear 10 will drive the self-rotating gear 11 to rotate together, and the self-rotating gear 11 will drive the meshing driven gear ring 12 to rotate. The rotation of the driven gear ring 12 will drive the liquid spinning ring 14 to rotate through the fixed cylinder 13, thereby driving multiple liquid spinning arc plates 15 to rotate in the liquid spinning groove of the fixed mold seat 2, so that the metal liquid pressed into the mold center of the movable mold seat 1 and the fixed mold seat 2 generates eddy currents, which have an initial force to flow toward the edge. In this way, the pressed metal liquid has a greater force to flow toward the edge. The flow direction of the liquid eddy current is uncertain, and it is easier to pass through and fill the local protrusions and areas with smaller fillets of the component. Compared with the current flow method of simply relying on pressure to drive the liquid, the filling effect is better and the filling efficiency is higher.

[0043] When cooling is required after die-casting, the cooling water pipes are respectively connected to the liquid inlet pipes 16 on the movable mold base 1, so that the cooling water can continuously flow into the outer cooling ring pipe 17. At this time, the transition valve plug 24 in the transition pipe 18 that initially contacts the cooling water is always pulled by the return spring 23 and pressed on the small-diameter end of the guide bucket 22 due to the low hydraulic pressure, so that the transition pipe 18 cannot flow. After the upper and lower outer cooling ring pipes 17 are filled with cooling water, as the cooling water is continuously injected, the transition valve plug 24 is gradually maximized due to the hydraulic pressure, thereby stretching the return spring 23, so that a gap is generated between the transition valve plug 24 and the small-diameter end of the guide bucket 22, allowing the cooling water to pass through at the same time. Multiple transition pipes 18 flow into the inner cooling loop 19 and the staggered mesh pipe 20, achieving synchronous cooling of various parts of the die-cast component. The cooling water flows out through the unified valve assembly set in the opposite direction in the transition pipe 18, and then flows out through the liquid inlet pipe 16 that is not connected to the cooling water pipe, to achieve circulating cooling of the cooling water. In this way, the cooperation of the guide bucket 22 and the transition valve plug 24 in the transition pipe 18 can be utilized to control the cooling water in the outer cooling loop 17 to flow into the inner cooling loop 19 and the staggered mesh pipe 20 from multiple directions at the same time, to achieve synchronous cooling of multiple parts of the aluminum alloy component, and to avoid large temperature differences in different parts of the aluminum alloy component with a low melting point during cooling.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A die-casting mold for a lightweight component, comprising a movable mold base (1) and a fixed mold base (2), wherein a pouring hole (3) is provided through the fixed mold base (2), characterized in that: The fixed mold base (2) is provided with a liquid spinning groove interconnected with the pouring hole (3) on one side of the movable mold base (1); a heat-conducting right-angle glass tube (4) is provided on one side of the pouring hole (3); the lower end of the heat-conducting right-angle glass tube (4) is connected to a piston tube (6) via a heat dissipation tube (5); the heat dissipation tube (5) and the piston tube (6) are respectively connected to two eccentric shafts (8) via a partition (7) and a piston plate (9); the two eccentric shafts (8) are respectively connected to a self-rotating gear (11) via two swing gears (10); and a liquid spinning component for allowing the metal liquid to escape to the surroundings is provided on one side of the self-rotating gear (11); Two outer cooling ring pipes (17) and two inner cooling ring pipes (19) are arranged in two layers, the outer cooling ring pipes (17) are connected to the inner cooling ring pipes (19) through a plurality of transition pipes (18), and two adjacent transition pipes (18) are respectively provided with a unified valve assembly in opposite directions, and the inner side of the inner cooling ring pipe (19) located at the bottom is provided with a staggered mesh pipe (20) for cooling the end face of the component.

2. A die-casting mold for a lightweight component according to claim 1, characterized in that: The heat-conducting right-angle glass tube (4) is fixedly arranged in the fixed mold base (2); the heat-conducting right-angle glass tube (4) and the heat dissipation tube (5) are in communication with each other; and the side wall of the heat dissipation tube (5) is in communication with the piston tube (6) via a connecting tube.

3. A die-casting mold for a lightweight component according to claim 1, characterized in that: The partition (7) is arranged in the heat dissipation tube (5), the side wall of the piston plate (9) is slidably connected to the inner wall of the piston tube (6), the partition (7) is rotationally connected to the swing gear (10) through the eccentric shaft (8), the piston plate (9) is rotationally connected to the swing gear (10) through the eccentric shaft (8), the bottom ends of the two swing gears (10) are rotationally connected to the fixed mold base (2) through a fixed base, and the two swing gears (10) are meshed with each other.

4. The die-casting mold for a lightweight component according to claim 1, characterized in that: The bottom end of the swing gear (10) located on one side of the heat dissipation pipe (5) is fixedly connected to the top end of the self-rotating gear (11) via a fixed shaft (25); the self-rotating gear (11) is meshingly connected with a driven gear ring (12); and the driven gear ring (12) is arranged on the periphery of the pouring hole (3).

5. A die-casting mold for a lightweight component according to claim 4, characterized in that: The liquid spinning assembly is composed of a liquid spinning ring (14) and a plurality of liquid spinning arc plates (15); the bottom end of the driven gear ring (12) is fixedly connected to the top end of the liquid spinning ring (14) via a fixed cylinder (13); the inner side wall of the liquid spinning ring (14) is fixedly connected to the side walls of the plurality of liquid spinning arc plates (15); and the liquid spinning ring (14) is rotatably connected to the inner side wall of the liquid spinning groove on the fixed mold base (2).

6. The die-casting mold for a lightweight component according to claim 1, characterized in that: Three liquid inlet pipes (16) are fixedly connected to one side of the external cooling ring pipe (17) and are interconnected. The external cooling ring pipe (17) located at the upper layer is arranged on the outside of the edge of the core of the movable mold base (1), and the external cooling ring pipe (17) located at the lower layer is arranged on the outside of the end face of the core of the movable mold base (1). The external cooling ring pipe (17) located at the upper layer is interconnected with the external cooling ring pipe (17) located at the lower layer through a plurality of flow pipes.

7. The die-casting mold for a lightweight component according to claim 1, characterized in that: The unified valve assembly consists of a guide bucket (22) and a transition valve plug (24); the inner wall of the transition pipe (18) is fixedly connected with a flow orifice plate (21); the end of the flow orifice plate (21) is fixedly connected to the large-diameter end of the guide bucket (22); the end of the flow orifice plate (21) is fixedly connected to the side wall of the transition valve plug (24) via a return spring (23); the transition valve plug (24) is arranged at the small-diameter end of the guide bucket (22), and the diameter of the transition valve plug (24) is slightly larger than the inner diameter of the small-diameter end of the guide bucket (22).

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