Radiator shaping device

FIELD OF THE INVENTION

The present invention relates to a radiator shaping device which serves in manufacturing a radiator with a high heat conductivity, thus the radiator may be used to effectively and rapidly cool electronic elements with high heat generation.

BACKGROUND OF THE INVENTION

The radiator

1

of a conventional electronic elements is illustrated in

FIG. 1

, the structure thereof is formed by aluminum material By aluminum extrusion or press molding, a lower plate

10

and a plurality of spaced fins

11

stand upright at the lower plate so that by the increment of area and the slots

12

between the fins

11

, a heat dissipating function is achieved. However, in the radiator

1

made by aluminum extrusion or press molding, the widths of the fins

11

are limited and thus can not be reduced to a desired size. Namely, the fins

11

shaped from a lower plate

10

with the same area are finite. Therefore. under the confinement of the same area and height, the total area of heat dissipation can not be increased greatly.

Therefore, a radiator with the same area and height but having a large heat dissipating area has been developed. As shown in

FIG. 2

, the radiator

2

has a U shaped lower plate

20

. A folded radiating piece formed by folding single thin aluminum piece is fixed in the U shape space. By the character that the width of the piece is very thin, more fins

210

and slots

211

are formed on the same area and height. However, this aluminum folded radiating piece

21

is adhered to the aluminum lower plate

20

by glue (such as head conductive glue) having a bad heat conductivity. Because of the isolation of the glue the heat transformation between the folded radiating piece

21

and the lower plate

20

is poor. Therefore, heat efficiency can not be attained to desired effect. Besides, since the glue is applied between the folded radiating piece

21

and the lower plate

20

and has a physical property different from aluminum. Thus, for a long period of heat expansion and cool contraction, the glue will deteriorate in quality and the adhesion becomes poor so that the contact between the folded radiating piece

21

and the lower plate

20

is worse and thus heat transformation is not preferred. This is necessary to be improved.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to provide a radiator shaping device comprising a lower mold, an upper mold and two movable molds. The aluminum folded radiating piece is formed integrally with an aluminum lower plate, thus the radiator may effectively use the folded radiating piece with a large radiating area and a preferred heat radiating effect. Moreover, the folded radiating piece and the lower plate are made of the same material, thus heat is transferred directly and rapidly. Moreover, the structure is more steady. Therefore, the complete heat dissipation effect is improved effectively.

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1

shows the perspective view of a conventional radiator structure.

FIG. 2

is a perspective view showing assembly of another radiator.

FIG. 3

is an exploded perspective view of the present invention.

FIG. 4

is a schematic cross sectional view showing the use of the radiator according to the present invention.

FIG. 5

shows the perspective view of a radiator shaped according to the present invention.

FIG. 6

is a schematic cross sectional view showing the use of another radiator shaped from the present invention.

FIG. 7

is a schematic cross sectional view showing the use of further radiator shaped from the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to

FIG. 3

, a preferred embodiment for the radiator shaping device according to the present invention is illustrated. The radiator shaping device of the present invention includes a lower mold

30

, an upper mold

31

and two movable molds

32

. The inner portion of the lower mold

30

has a lower chamber

300

for containing folded radiating piece

40

, while the inner portion of the upper mold

31

has an upper chamber

310

with a shallow depth so that a closing chamber is formed as the upper mold and the lower mold are engaged. A plurality of parallel inserting plates are formed on the lower plate

320

of each movable mold

32

. The length of each inserting plate

321

may be extended to be as one half of that of the folded radiating piece

40

. Thus, two movable molds

32

may be inserted into the slots

401

of the fins

400

at two ends of the folded radiating piece

40

and thus the two movable molds are connected with one another so that the folded radiating piece

40

is supported between the two ends thereof. Adjacent ones of the inserting plates

321

of each movable mold

32

are spaced by a dimension substantially equivalent to a thickness dimension of the radiating piece fin

400

received therebetween in the embodiment shown; but, they may be spaced by different relative dimensions in other embodiments, such as by a dimension sufficient to receive therebetween portions of at least one adjacent pair of radiating piece fin sections (as in the embodiment of FIG.

7

). The inserting pieces

321

and fins

400

are in any event accordingly dimensioned such that they tightly engage, with the inserting plates

321

then intermediately partitioning each slot

401

between the fins

400

.

Accordingly, if a radiator is desired to be shaped, at first, the two movable molds

32

serve to support the folded radiating piece

40

. Then the folded radiating piece

40

and the two movable molds

32

are placed in the lower chamber

300

of the lower mold

30

, so that the folded radiating piece

40

and the two movable molds

32

may be tightly inserted within the peripheral wall of the lower chamber

300

so that the upper and lower spaces are isolated. Then, the upper mold

31

covers the lower mold

30

, next, melt aluminum liquid is filled into a filling hole

311

, as shown in FIG.

4

. At this time, due to the isolation of the folded radiating piece

40

and the two movable molds, the aluminum liquid is contained only in the upper chamber of the folded radiating piece

40

and tightly contacts the top surface of the folded radiating piece

40

. After the aluminum liquid is cooled, it will become a single piece integrally formed with the folded radiating piece

40

. Thus, under the condition of same area and height, the folded radiating piece

40

has a larger radiating area than the conventional aluminum extruding or pressing molding radiator. Especially, by the shaping device

3

of the present invention, the aluminum folded radiating piece

40

and the lower plate

41

can be combined together and have identical property. Thus the heat conductive glue or other material for adhesion is unnecessary. Thus, heat conduction is more rapid, directly and steadily. Moreover, since the folded radiating piece

40

and the lower plate

41

are formed by welding, thus, the connection therebetween is strong and stable.

The physical reactions for the hot expansion and cold contraction are identical. Thus, the radiator will not deteriorate in quality or become loose. Therefore, the effect of heat transfer is retained.

Accordingly, the radiator shaping device according to the present invention has a preferred heat transferred effect and a well structure, and thus the heat dissipating efficiency is increased.

Although the present invention has been described with reference to the preferred embodiments, it will be understood that the invention is not limited to the details described thereof. Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims.