Mold for extruding an aluminum seat of a heat sink and a method for making the same
a technology of heat sink and mold, which is applied in the direction of extrusion dies, manufacturing tools, mechanical equipment, etc., can solve the problems of bulky conventional heat sinks, high manufacturing costs, and complicated manufacturing processes, and achieve the effect of reducing manufacturing costs and reducing manufacturing costs
Inactive Publication Date: 2013-07-25
HUANG TSUNG HSIEN
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- Abstract
- Description
- Claims
- Application Information
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Benefits of technology
This patent describes a mold and method for making an aluminum seat for a heat sink. The mold has a forming slot with countless indentations on its interior wall, and the fixed amount of aluminum material is distributed over the forming slot and indentations during the extrusion process. This efficient production method reduces waste and cost by using a fixed amount of aluminum material. The resulting heat sink has multiple ribs formed on its exterior wall and a firm buckling achieved through a pressing process. The mold also has a taper contour, which allows for efficient die drawing.
Problems solved by technology
However, the manufacturing process is complicated, and the manufacturing cost is high.
Moreover, the conventional heat sink is bulky and the number of the fin units is unsatisfactory for efficiently dispersing heat.
Obviously, the soldering is time-consuming and laborious, and the soldering even needs electroplating.
The manufacturing process is not good for the environment and the completed product is inefficient in dispersing heat.
While the aluminum material is directly trimmed into solid disks, the trimming is still time-consuming and laborious.
Accordingly, it is not desirable to produce the heat sink in large numbers by the conventional means.
Even worse, extra costs are required to treat the waste material.
Method used
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[0026]FIGS. 1 to 4 show a method for extruding an aluminum seat of a heat sink. A fixed amount of aluminum material 10 is provided and placed in a forming slot 11 of a lower die 1. A punch 21 of an upper die 2 allows the fixed amount of aluminum material 10 to be integrally formed into the aluminum seat 100 of the heat sink by one-time extrusion. Referring to FIGS. 5 and 6, the forming slot 11 of the lower die 1 includes a plurality of like or unlike indentations 111, 112 longitudinally defined on an interior wall of the forming slot 11. A slot bottom of the forming slot 11 is a closed end. First, the fixed amount of aluminum material 10 is placed in the forming slot 11 in accordance with a correspondent shape. Then, the aluminum material 10 is pressed by the upper die 2. The aluminum material 10 is accordingly distributed over the forming slot 11 and the indentations 111, 112. The aluminum seat 100 (as shown in FIGS. 7 to 9) of the heat sink with a plurality of ribs 101, 102 corres...
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Abstract
An aluminum seat of a heat sink is made by placing a fixed amount of aluminum material into a forming slot of a lower die to undergo one-time extrusion by a punch of an upper die. A plurality of indentations are longitudinally disposed on an interior wall of the forming slot of the lower die, and the bottom of the forming slot is a closed end. When the fixed amount of aluminum material is distributed over the forming slot and the indentations during the extrusion, corresponding ribs are formed on an exterior wall of the aluminum seat of the heat sink after the dies are drawn off. Each rib facilitates firm insertion of fin units into the seat. The heat sink with radial fin units is produced from the aluminum seat and the fin units.
Description
BACKGROUND OF THE INVENTION[0001](a) Field of the Invention[0002]The present invention relates to a mold for extruding an aluminum seat of a heat sink and a method for making the same. More particularly, the invention relates to extruding a fixed amount of aluminum material into the aluminum seat with a plurality of ribs defined on an exterior wall thereof by one-time extrusion using an upper die and a lower die.[0003](b) Description of the Prior Art[0004]A conventional heat sink comprises a plurality of fin units and an aluminum seat, wherein the fin units are radially and integrally structured on an exterior wall of the aluminum seat. However, the manufacturing process is complicated, and the manufacturing cost is high. Moreover, the conventional heat sink is bulky and the number of the fin units is unsatisfactory for efficiently dispersing heat.[0005]Conventionally, the fin units are respectively soldered to the exterior wall of the aluminum seat. Obviously, the soldering is time...
Claims
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IPC IPC(8): B21C23/10B21C25/00
CPCB21K1/76H01L2924/0002H01L2924/00B21C25/02B21C23/06
InventorHUANG, TSUNG-HSIEN
OwnerHUANG TSUNG HSIEN