PRESSING-SHAPING METHOD FOR MANUFACTURING CIRCULAR COOLING BASE FOR BEING EMBEDDED WITH FINS AND MOLD USED IN THE METHOD
A pressing-shaping method for manufacturing a circular cooling base for being embedded with fins and a mold used in the method are disclosed. The method includes providing a blank ingot that has a first surface, a second surface, and a lateral circular surface encircling the rims of the first and second surfaces. The method further includes using a mold to press the blank ingot to cause the first surface of the blank ingot to indent inward to form a groove, and to cause a plurality of clipping grooves to be formed on the lateral circular surface of the blank ingot through extrusion. As a result, the blank ingot is shaped into the circular cooling base for being embedded with fins.
1. Technical Field
The present invention relates to the manufacturing process of a heat dissipator, and more particularly, to a pressing-shaping method for manufacturing a circular cooling base for being embedded with fins and a mold used in the method.
2. Related Art
Conventionally, a heat dissipator is shaped through squeezing or pulling a piece of aluminum. Most of such conventional heat dissipators are circular in shape. Generally speaking, the piece of aluminum is first squeezed or pulled to form a long pipe with a plurality of clipping grooves on the pipe's outer wall. The pipe is then cut into a plurality of heat dissipating bases, each of which is circular and has a hollow center. Afterward, a slab is forced into a central hollow area of each of the heat dissipating bases, so that the slab can become a heat-receiving part of the heat dissipating base. The clipping groove on the exterior of the heat dissipating base is then embedded with a plurality of fins to finalize a heat dissipator.
One of the primary disadvantages of this convention method is that the spaces between the clipping grooves are relatively large. As a result, there are relatively few and sparse clipping grooves. To cope with this problem, some manufacturers will apply additional flushing-cutting process to create some additional grooves. However, this process will not only waste raw material but also wear down the cutting tools. Furthermore, some liquid solution used to facilitate the process may also pollute the manufacturing factory.
BRIEF SUMMARYThe present invention provides a pressing-shaping method for manufacturing a circular cooling base for being embedded with fins and a mold used in the method. Generally speaking, a mold is used to press a blank ingot, such as an aluminum blank ingot, to form the required circular cooling base within a single step. This can result in a faster manufacturing process and avoid additional cutting process. Furthermore, the present invention can save raw material and avoid environment pollution.
The present invention provides a pressing-shaping method for manufacturing a circular cooling base for being embedded with fins. The method includes: a) providing a blank ingot that has a first surface, a second surface, and a lateral circular surface encircling the rims of the first and second surfaces; and b) using a mold to press the blank ingot to cause the first surface of the blank ingot to indent inward to form a groove, and to cause a plurality of clipping grooves to be formed on the lateral circular surface of the blank ingot through extrusion.
The present invention further provides the mold used in the pressing-shaping method. The mold includes a male mold and a female mold. The male mold is extruded with a groove shaping part for causing the first surface of the blank ingot to form the groove. The female mold is for working in coordination with the male mold. The female mold is indented with a mold cave space. The inner wall of the mold cave space is indented with a plurality of circularly arranged teeth. The circularly arranged teeth are for causing the lateral circular surface of the blank ingot to form the clipping grooves.
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It deserves mentioning that because the groove shaping part 200 of the male mold 20 of the mold 2 is used to press the first surface 10 of the blank ingot 1, the second surface 11 of the blank ingot 1 can remain its plane shape, as shown in
The aforementioned steps and mold structures serve as embodiments of the present invention's pressing-shaping method for manufacturing a circular cooling base for being embedded with fins and the present invention's mold.
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The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including configurations ways of the recessed portions and materials and/or designs of the attaching structures. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.
Claims
1. A pressing-shaping method for manufacturing a circular cooling base for being embedded with fins, the method comprising:
- a) providing a blank ingot that has a first surface, a second surface, and a lateral circular surface encircling the rims of the first and second surfaces; and
- b) using a mold to press the blank ingot to cause the first surface of the blank ingot to indent inward to form a groove, and to cause a plurality of clipping grooves to be formed on the lateral circular surface of the blank ingot through extrusion;
- wherein after steps a) and b) the blank ingot is shaped into the circular cooling base for being embedded with fins.
2. The method of claim 1, wherein the blank ingot provided in step a) is a solid cylinder.
3. The method of claim 1, wherein the blank ingot provided in step a) is an aluminum blank ingot.
4. The method of claim 1, wherein step b) further causes the second surface of the blank ingot to form a plane.
5. The method of claim 1, further comprising:
- after step b), embedding a plurality of fins onto the clipping grooves.
6. The method of claim 5, further comprising:
- assembling a circular lid to the bottom edges of the fins.
7. A mold for being used in the pressing-shaping method of claim 1, the mold comprising:
- a male mold, extruded with a groove shaping part for causing the first surface of the blank ingot to form the groove; and
- a female mold for working in coordination with the male mold, the female mold being indented with a mold cave space, the inner wall of the mold cave space being indented with a plurality of circularly arranged teeth, the circularly arranged teeth being for causing the lateral circular surface of the blank ingot to form the clipping grooves.
8. The mold of claim 7, wherein on the inner wall of the mold cave space of the female mold, a clipping arm shaping part is formed on each of the two sides of each of the teeth.
9. The mold of claim 8, wherein the teeth and a plurality of separation teeth are formed alternately on the inner wall of the mold cave space of the female mold.
10. The mold of claim 7, wherein the teeth and a plurality of separation teeth are formed alternately on the inner wall of the mold cave space of the female mold.
Type: Application
Filed: Jun 20, 2011
Publication Date: Dec 20, 2012
Inventor: Shih-Ming CHEN (New Taipei City)
Application Number: 13/163,819
International Classification: B21D 31/00 (20060101);