Aluminum profile hot extrusion die of star-shaped radiating pipe

Abstract

The utility model discloses an aluminum profile hot extrusion die of a star-shaped radiating tube, four shunting holes of a feeding port of the hot extrusion die are symmetrically distributed and uniformly distributed and obliquely expanded outwards to ensure sufficient aluminum flow supply and good welding, an inlet horn bridge is adopted to ensure the compressive strength of the die, and the treatment of an outlet sinking bridge and the later maintenance of the die become simple. An aluminum bar enters the lower die welding chamber through the upper die shunting holes, the star-shaped radiating pipe aluminum profile is produced through the center cavity of the cavity and the radiating long-edge cavities radiating outwards from the center cavity, and it is guaranteed that the surface of the profile is smoother, the radiating performance is perfect, the size is accurate, and the using effect is outstanding.

Description

Technical Field

[0001] The utility model relates to the technical field of hot extrusion dies, in particular to an aluminum profile hot extrusion die for a star-shaped heat dissipation pipe. Background Art

[0002] Aluminum has good extrusion formability, fast heat dissipation, light weight, good metal toughness, certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance, easy recycling, high thermal and electrical conductivity, non-magnetic, good shielding and non-toxic characteristics.

[0003] Star-shaped heat pipes Figure 1 As shown, it includes a central tube 100 and outward-radiating long heat pipes 200, with an outer diameter of 196.8mm and an inner diameter of 30mm. The long heat pipes are star-shaped, with a sheet thickness of 1.2mm and an inner tube wall thickness of 2.5mm. This type of star-shaped heat pipe is a thin-walled part and requires a specially designed mold to be hot-extruded from aluminum profiles. Utility Model Content

[0004] The utility model aims to provide an aluminum profile hot extrusion die for a star-shaped radiating pipe, so as to solve the problem that the aluminum profile star-shaped radiating pipe is difficult to be hot-extruded.

[0005] In order to solve the above technical problems, the utility model provides an aluminum profile hot extrusion die for a star-shaped heat dissipation pipe, comprising an upper die and a lower die arranged in sequence from front to back, and the two groups are tightly connected by bolts and pins; the inlet is divided into multiple diversion holes in the upper die by a trumpet bridge; the lower die is sequentially provided with a welding chamber, a cavity and a discharge port starting from the side close to the upper die; an inclined platform is provided in the welding chamber, and the inclined platform extends obliquely from the edge toward the center to guide the aluminum flow to flow toward the cavity; the cavity includes a central cavity and several heat dissipation long side cavities radiating outward from the central cavity; the upper die is provided with a core on the side close to the lower die, and the core extends into the cavity, so that the aluminum flow forms a star-shaped heat dissipation pipe in the cavity.

[0006] Preferably, the horn bridge divides the inlet of the upper mold into four diversion holes.

[0007] Preferably, the four diversion holes are evenly distributed and expand obliquely outward.

[0008] Preferably, the side of the horn bridge close to the diversion hole is an inclined extending material feeding surface.

[0009] Preferably, the outlet of the speaker bridge is countersunk.

[0010] Preferably, a plurality of inclined pull tables are processed and evenly distributed around the central axis in the welding chamber, and a plurality of heat dissipation long side cavities are opened between two adjacent inclined pull tables.

[0011] Preferably, the mold core is an oblique protection mold core, and the portion extending into the mold cavity is an effective working annular surface.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The star-shaped heat pipe aluminum profile hot extrusion die has four symmetrically distributed diverter holes at the inlet, evenly distributed and diagonally expanding to ensure sufficient aluminum flow and good welding. A trumpet bridge at the inlet ensures the mold's compressive strength, and a sunken bridge at the outlet simplifies subsequent mold maintenance. The aluminum bar enters the lower die welding chamber through the diverter holes in the upper die. The star-shaped heat pipe aluminum profile is produced by the central cavity and several long side cavities radiating outward from the central cavity. This ensures a smoother profile surface, perfect heat dissipation performance, precise dimensions, and outstanding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a star-shaped heat pipe;

[0015] Figure 2 This is a front view of an aluminum profile hot extrusion die for a star-shaped heat dissipation pipe provided by the utility model;

[0016] Figure 3 yes Figure 2 Cross-sectional view at the mid-CC position;

[0017] Figure 4 This is a front view of the upper die of the aluminum profile hot extrusion die provided by the utility model;

[0018] Figure 5 yes Figure 4 Cross-sectional view at the AA position;

[0019] Figure 6 This is a front view of the lower die of the aluminum profile hot extrusion die provided by the utility model;

[0020] Figure 7 yes Figure 6 Cross-sectional view of the middle BB position.

[0021] In the figure: 1. Upper mold; 2. Lower mold; 3. Trumpet bridge; 4. Diverter hole; 5. Feed surface; 6. Welding chamber; 7. Cavity; 8. Discharge port; 9. Inclined pull table; 10. Mold core; 101. Effective working annular surface. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0025] The utility model provides a star-shaped heat pipe aluminum profile hot extrusion die, please refer to Figure 2-3 , including an upper mold 1 and a lower mold 2 arranged in sequence from front to back, and the two groups are tightly connected by bolts and pins; the inlet is divided into multiple diversion holes 4 in the upper mold 1 by a speaker bridge 3; the lower mold 2 is sequentially provided with a welding chamber 6, a cavity 7 and a discharge port 8 starting from the side close to the upper mold 1; an inclined platform 9 is provided in the welding chamber 6, and the inclined platform 9 extends obliquely from the edge toward the center to guide the aluminum flow to flow toward the cavity 7; the cavity 7 includes a central cavity and several long side cavities for heat dissipation radiating outward from the central cavity, and a core 10 is provided on the side of the upper mold 1 close to the lower mold 2, and the core 10 extends into the cavity 7, so that the aluminum flow forms a star-shaped heat dissipation pipe in the cavity 7.

[0026] Specifically, such as Figure 4 and Figure 5 As shown, the horn bridge 3 divides the inlet of the upper mold 1 into four diversion holes 4, and the four diversion holes 4 are evenly distributed and obliquely expanded outward to ensure sufficient aluminum flow and good welding. The use of the horn bridge 3 at the inlet can ensure the compressive strength of the mold.

[0027] Furthermore, the side of the speaker bridge 3 close to the diversion hole 4 is an inclined extending material feeding surface 5; and the outlet is countersunk.

[0028] Specifically, such as Figure 6 and Figure 7 As shown, the inclined pull tables 9 are processed in plurality and are evenly distributed around the central axis in the welding chamber 6 , and a plurality of heat dissipation long side cavities are opened between two adjacent inclined pull tables 9 .

[0029] Furthermore, the mold core 10 is an oblique protection mold core, and the portion extending into the mold cavity 7 is an effective working annular surface 101 .

[0030] The star-shaped heat pipe aluminum profile hot extrusion die has four symmetrically distributed diverter holes 4 at the inlet, evenly distributed and diagonally expanding outward to ensure sufficient aluminum flow and good welding. A horn bridge 3 is used at the inlet to ensure mold compressive strength, and a sunken bridge is used at the outlet to simplify subsequent mold maintenance. The aluminum bar enters the lower die welding chamber 6 through the upper die diverter holes 4. The star-shaped heat pipe aluminum profile is produced by the central cavity 7 and several heat-dissipating long side cavities radiating outward from the central cavity. This ensures a smoother profile surface, perfect heat dissipation performance, precise dimensions, and outstanding performance.

[0031] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A star-shaped heat pipe aluminum profile hot extrusion die, characterized in that: It comprises an upper die (1) and a lower die (2) arranged in sequence from front to back, and the two sets are tightly connected by bolts and pins; In the upper mold (1), the inlet is divided into a plurality of diversion holes (4) by a speaker bridge (3); The lower mold (2) is provided with a welding chamber (6), a mold cavity (7) and a discharge port (8) in sequence starting from a side close to the upper mold (1); An inclined platform (9) is provided in the welding chamber (6), and the inclined platform (9) extends obliquely from the edge toward the center to guide the aluminum flow toward the mold cavity (7); The mold cavity (7) includes a central mold cavity and a plurality of heat dissipation long side mold cavities radiating outward from the central mold cavity. A mold core (10) is provided on a side of the upper mold (1) close to the lower mold (2), and the mold core (10) extends into the mold cavity (7), so that the aluminum flow forms a star-shaped heat dissipation tube in the mold cavity (7).

2. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 1, characterized in that: The speaker bridge (3) divides the inlet of the upper mold (1) into four diversion holes (4).

3. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 2, characterized in that: The four diversion holes (4) are evenly distributed and expand obliquely outward.

4. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 3, characterized in that: A side of the speaker bridge (3) close to the diversion hole (4) is an inclined extending material feeding surface (5).

5. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 4, characterized in that: The outlet of the speaker bridge (3) is countersunk.

6. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 1, characterized in that: A plurality of inclined pull tables (9) are processed and evenly distributed around the central axis in the welding chamber (6), and a plurality of heat dissipation long side cavities are opened between two adjacent inclined pull tables (9).

7. The aluminum profile hot extrusion die for a star-shaped heat pipe according to claim 1, characterized in that: The mold core (10) is an oblique protection mold core, and the portion extending into the mold cavity (7) is an effective working annular surface (101).

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