High-efficiency aluminum hot extrusion die for double-layer porous ultrathin high-precision water-cooling plate

Abstract

This utility model discloses a high-efficiency aluminum hot extrusion die for a double-layer, multi-hole, ultra-thin, high-precision water-cooled plate, comprising: an upper die with a flow divider bridge; a lower die with a welding chamber and a discharge hole communicating with the welding chamber; a die core disposed on the flow divider bridge and adapted to the welding chamber; and four sets of flow dividers disposed on the upper die and distributed around the flow divider bridge, with flow divider blocks disposed in the flow dividers. The beneficial effect of this utility model is that by setting four sets of flow dividers distributed around the flow divider bridge on the upper die, and cooperating with the flow divider blocks in the flow dividers, the aluminum profile can be stably and evenly distributed to the welding chamber, effectively avoiding problems such as local stress concentration and structural defects caused by uneven distribution of aluminum material, and ensuring the consistency of the aluminum material state before welding.

Description

Technical Field

[0001] This utility model relates to a high-efficiency aluminothermic extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate. Background Technology

[0002] With the rapid development of electronic equipment, new energy vehicles and other fields, the performance requirements of heat dissipation components are increasing. As a high-efficiency heat dissipation element, the double-layer porous ultra-thin high-precision water-cooled plate is widely used in the heat dissipation system of high power density devices due to its advantages such as large heat dissipation area, light weight and compact structure.

[0003] Previously, double-layer porous ultra-thin high-precision water-cooled plates were mostly formed using aluminothermic extrusion, and their forming quality directly depended on the structural design of the hot extrusion die. However, in the production of such water-cooled plates, the traditional aluminothermic extrusion die has an unreasonable distribution of flow holes, resulting in uneven distribution of aluminum profiles when entering the welding chamber. This can easily lead to local accumulation or insufficient supply, which in turn causes forming defects such as wall thickness deviation and internal voids in the water-cooled plate, affecting the structural strength and heat dissipation performance of the product. In view of this, this utility model proposes an aluminothermic extrusion die for double-layer porous ultra-thin high-precision water-cooled plates to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate includes: The upper mold is provided with a flow divider bridge; The lower mold has a welding chamber and a discharge hole that communicates with the welding chamber. A mold core, which is disposed on the flow divider bridge and is adapted to the welding chamber; Four sets of diversion holes are provided on the upper mold and distributed around the diversion bridge. Diversion blocks are provided in the diversion holes. The flow distribution hole is used to evenly distribute the aluminum profile into the welding chamber, the discharge hole is used for the extrusion of the formed aluminum profile, and the die core is used for the hot extrusion production of the aluminum profile.

[0006] As an improvement to the above technical solution, the diversion block is disposed on the inner wall of the diversion hole; The diversion block is positioned close to the diversion bridge.

[0007] As an improvement to the above technical solution, the diverter block is provided with guide arc surfaces on both sides, and the two sets of guide arc surfaces are symmetrically arranged.

[0008] As an improvement to the above technical solution, the discharge hole is set in a stepped shape, and the outlet width of the discharge hole on the side away from the upper mold is greater than the outlet width on the side closer to the upper mold.

[0009] As an improvement to the above technical solution, both the upper mold and the lower mold are made of H 13 mold steel.

[0010] As an improvement to the above technical solution, the welding chamber is opened on the surface of the lower mold near the upper mold; The lower mold is also provided with a cavity, which is connected to the discharge hole, and the mold core is disposed in the cavity.

[0011] As an improvement to the above technical solution, the four sets of diversion holes are symmetrically distributed with the central axis of the diversion bridge as the center.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By setting four sets of diversion holes distributed around the diversion bridge in the upper mold, and cooperating with the diversion blocks in the diversion holes, the aluminum profile can be stably and evenly distributed to the welding chamber, effectively avoiding problems such as local stress concentration and structural defects caused by uneven distribution of aluminum material, ensuring the consistency of the aluminum material state before welding, and laying the foundation for subsequent high-quality welding and efficient welding. The discharge hole of the lower die is precisely matched with the outer dimensions of the target double-layer porous ultra-thin high-precision water-cooled plate, which can accurately form and stably extrude the aluminum profile after the welding chamber is processed, ensuring that the dimensional tolerance and shape and position accuracy of the formed aluminum profile meet the high-precision requirements, and reducing defects such as deformation and twisting during the extrusion process. The die core is fixedly connected to the flow divider bridge and is adapted to the welding chamber. During the hot extrusion process, it can play a precise guiding and shaping role for aluminum profiles. Especially for complex double-layer porous structures, it can ensure the complete forming of the internal structure and porous structure of aluminum profiles, and improve the density and regularity of the internal structure of the product. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the lower mold of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the lower mold of this utility model; Figure 5This utility model Figure 4 Enlarged structural diagram at point B; Figure 6 This utility model Figure 1 Another structural diagram; Figure 7 This utility model Figure 6 Enlarged structural diagram at point C; Figure 8 This is a cross-sectional schematic diagram of the upper mold of this utility model; Figure 9 This utility model Figure 8 A magnified structural diagram at point D.

[0014] In the diagram: 10. Upper mold; 11. Diverter hole; 12. Diverter bridge; 13. Diverter block; 14. Guide arc surface; 20. Lower mold; 21. Welding chamber; 22. Discharge hole; 23. Cavity; 30. Mold core. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example: like Figure 1-9 As shown, this embodiment proposes a high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate, comprising: Upper mold 10, wherein a flow divider bridge 12 is provided on the upper mold 10; The lower mold 20 has a welding chamber 21 and a discharge hole 22 communicating with the welding chamber 21. Mold core 30, the mold core 30 is disposed on the flow divider bridge 12, and the mold core 30 is adapted to the welding chamber 21; Four sets of diversion holes 11 are provided on the upper mold 10, and the four sets of diversion holes 11 are distributed around the diversion bridge 12. Diversion blocks 13 are provided in the diversion holes 11. The diversion hole 11 is used to evenly distribute the aluminum profile into the welding chamber 21, the discharge hole 22 is used for the extrusion of the formed aluminum profile, and the die core 30 is used for the hot extrusion production of the aluminum profile.

[0017] In this embodiment, when producing a double-layer porous ultra-thin high-precision water-cooled plate, the upper die 10 and the lower die 20 are respectively installed in the corresponding positions of the extrusion press to ensure that the flow divider bridge 12 of the upper die 10 and the welding chamber 21 of the lower die 20 are precisely aligned, and to ensure that the die core 30 is compatible with the welding chamber 21 and the lower die 20. Then, the heated aluminum profile billet is fed into the equipment, the extrusion press is started, and the aluminum profile enters the welding chamber 21 through the flow divider hole 11. At the same time, the flow divider block 13 assists in uniform flow division. After welding is completed in the welding chamber 21, the profile is shaped by the die core 30 and finally extruded from the discharge hole 22. After extrusion, the mold is cooled, the upper die 10, the lower die 20 and the die core 30 are disassembled, and the residual aluminum shavings in the flow divider hole 11, the welding chamber 21 and the discharge hole 22 are cleaned. After checking that there is no wear on each part, they are properly stored for the next use. By setting four sets of diversion holes 11 distributed around the diversion bridge 12 in the upper mold 10, and cooperating with the diversion blocks 13 in the diversion holes 11, the aluminum profile can be stably and evenly distributed to the welding chamber 21, effectively avoiding problems such as local stress concentration and structural defects caused by uneven distribution of aluminum material, ensuring the consistency of the aluminum material state before welding, and laying the foundation for subsequent high-quality welding and efficient welding. The discharge hole 22 of the lower die 20 is precisely matched with the outer dimensions of the target double-layer porous ultra-thin high-precision water-cooled plate, which can accurately form and stably extrude the aluminum profile after the welding chamber 21, ensuring that the dimensional tolerance and positional accuracy of the formed aluminum profile meet the high-precision requirements, and reducing defects such as deformation and twisting during the extrusion process. The mold core 30 is fixedly connected to the flow divider bridge 12 and is adapted to the welding chamber 21. During the hot extrusion process, it can play a precise guiding and shaping role for the aluminum profile. Especially for complex double-layer porous structures, it can ensure the complete forming of the internal structure and porous structure of the aluminum profile, and improve the density and regularity of the internal structure of the product.

[0018] Specifically, the diversion block 13 is disposed on the inner wall of the diversion hole 11; The diversion block 13 is positioned close to the diversion bridge 12.

[0019] In this embodiment, the diversion block 13 is disposed on the inner wall of the diversion hole 11 and close to the diversion bridge 12. It can accurately guide and limit the aluminum profile entering the diversion hole 11, avoid the aluminum profile from deviating or becoming congested in the diversion hole 11, and ensure that the aluminum profile can flow stably along the preset path to the surrounding area of ​​the diversion bridge 12, providing a basic guarantee for the subsequent uniform distribution to the welding chamber 21. This setting allows the diversion block 13 to be closer to the key nodes of the aluminum profile flow direction, which can further assist the diversion hole 11 in evenly distributing the aluminum profile to the welding chamber 21, reducing welding defects caused by uneven aluminum material distribution, and ensuring the consistency of the forming quality of the double-layer porous ultra-thin high-precision water-cooled plate. The positioning of the flow divider block 13, the flow divider hole 11, and the flow divider bridge 12 allows the various components of the mold to form a more efficient collaborative working relationship during the hot extrusion of aluminum profiles. This not only ensures the installation stability of the flow divider block 13 itself under high-pressure extrusion environment, but also improves the overall extrusion efficiency of the mold through its guiding effect, thus meeting the needs of high-efficiency production.

[0020] Specifically, the diverter block 13 is provided with guide arc surfaces 14 on both sides, and the two sets of guide arc surfaces 14 are symmetrically arranged.

[0021] In this embodiment, the guide arc surfaces 14 symmetrically arranged on both sides of the diversion block 13 can optimize the flow path of the aluminum profile in the diversion hole 11, reduce the frictional resistance between the aluminum profile and the diversion block, avoid the accumulation and stagnation of the aluminum profile due to excessive local resistance during the flow process, ensure that the aluminum profile can flow smoothly through the diversion hole 11 to the welding chamber 21, and ensure the continuity and stability of the hot extrusion process. The symmetrically distributed guiding arc surface 14 can play a balanced guiding role for the aluminum profile in the diversion hole 11, so that the aluminum profile can be evenly distributed to each area of ​​the diversion hole 11 during the diversion process. In conjunction with the diversion hole 11, the aluminum profile is evenly distributed to the welding chamber 21, which effectively avoids welding defects caused by uneven distribution of aluminum material (such as obvious weld lines, local non-welding, etc.), thereby improving the forming accuracy and structural consistency of the double-layer porous ultra-thin high-precision water-cooled plate.

[0022] Specifically, the discharge hole 22 is stepped, and the outlet width of the discharge hole 22 on the side away from the upper mold 10 is greater than the outlet width on the side closer to the upper mold 10.

[0023] In this embodiment, the stepped discharge hole 22 facilitates the extrusion of the aluminum profile after molding, ensuring the integrity of the aluminum profile surface.

[0024] Specifically, both the upper mold 10 and the lower mold 20 are made of H13 mold steel.

[0025] Specifically, the welding chamber 21 is formed on the surface of the lower mold 20 near the upper mold 10; The lower mold 20 is also provided with a cavity 23, which is connected to the discharge hole 22, and the mold core 30 is disposed in the cavity 23.

[0026] Specifically, the four sets of diversion holes 11 are symmetrically distributed with the central axis of the diversion bridge 12 as the center.

[0027] In this embodiment, the four groups of flow holes 11 are symmetrically distributed around the central axis of the flow bridge 12, which can ensure that the aluminum profiles entering each flow hole 11 maintain consistency in flow rate and velocity. This avoids situations where there is too much or too little aluminum material in some areas due to the asymmetrical distribution of the flow holes 11, and thus evenly distributes the aluminum profiles to the welding chamber 21. This ensures that the aluminum profiles are fully and evenly welded in the welding chamber 21, reduces welding defects, and ensures the structural integrity and forming accuracy of the double-layer porous ultra-thin high-precision water-cooled plate.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate, characterized in that: include: Upper mold (10), on which a flow divider bridge (12) is provided; The lower mold (20) has a welding chamber (21) and a discharge hole (22) communicating with the welding chamber (21). Mold core (30), the mold core (30) is disposed on the flow divider bridge (12), and the mold core (30) is adapted to the welding chamber (21); Four sets of diversion holes (11) are provided on the upper mold (10), and the four sets of diversion holes (11) are distributed around the diversion bridge (12). Diversion blocks (13) are provided in the diversion holes (11). The flow distribution hole (11) is used to evenly distribute the aluminum profile to the welding chamber (21), the discharge hole (22) is used for the extrusion of the formed aluminum profile, and the die core (30) is used for the hot extrusion production of the aluminum profile.

2. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: The diversion block (13) is disposed on the inner wall of the diversion hole (11); The diversion block (13) is positioned close to the diversion bridge (12).

3. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: The diversion block (13) is provided with guide arc surfaces (14) on both sides, and the two sets of guide arc surfaces (14) are symmetrically arranged.

4. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: The discharge hole (22) is stepped, and the outlet width of the discharge hole (22) on the side away from the upper mold (10) is greater than the outlet width on the side closer to the upper mold (10).

5. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: Both the upper mold (10) and the lower mold (20) are made of H13 mold steel.

6. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: The welding chamber (21) is located on the side surface of the lower mold (20) near the upper mold (10); The lower mold (20) is also provided with a cavity (23), which is connected to the discharge hole (22), and the mold core (30) is provided in the cavity (23).

7. The high-efficiency aluminum hot extrusion die for a double-layer porous ultra-thin high-precision water-cooled plate according to claim 1, characterized in that: The four sets of diversion holes (11) are symmetrically distributed with the central axis of the diversion bridge (12) as the center.

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