Combinational heatsink tube for intercooler

1. A method for forming a heatsink tube comprising:

a first step, a second step, and a third step;

wherein:

the first step includes performing a tube folding to initially roll a base sheet plate and then cut the base sheet plate into a first molded frame and a second molded frame;

the base sheet plate is made of aluminum;

the first molded frame is formed with a first end faceplate and two first connecting portions;

the two first connecting portions are formed on two sides of the first end faceplate;

each of the two first connecting portions is formed with a first abutting section;

the second molded frame is formed with a second end faceplate and two second connecting portions;

the two second connecting portions are formed on two sides of the second end faceplate;

each of the two second connecting portions is formed with a second abutting section;

the second abutting section of each of the two second connecting portions corresponds to the first abutting section of each of the two first connecting portions;

the second step includes applying a flux on an inner face of the first molded frame and the second molded frame;

the third step includes mounting the first molded frame on a heatsink fin module with the heatsink fin module being inserted into the first molded frame, and mounting the second molded frame on the first molded frame, to assemble the first molded frame, the heatsink fin module, and the second molded frame, and to form a product of a heatsink tube;

the heatsink fin module is flexible;

the heatsink tube has a flat shape;

the first molded frame, the heatsink fin module, and the second molded frame are combined to construct the heatsink tube;

the heatsink fin module is sandwiched between the first molded frame and the second molded frame;

each of the two first connecting portions of the first molded frame is mounted on the heatsink fin module;

each of the two second connecting portions of the second molded frame is mounted on each of the two first connecting portions of the first molded frame; and

the second abutting section of each of the two second connecting portions rests on and presses the first abutting section of each of the two first connecting portions.

2. The method as claimed in claim 1 , wherein each of the first molded frame and the second molded frame has a U-shaped configuration.

3. The method as claimed in claim 1 , wherein the heatsink tube has two parallel sides forming two opposite pressing edges each of which is pressed by the first abutting section of each of the two first connecting portions and the second abutting section of each of the two second connecting portions.

4. The method as claimed in claim 1 , wherein the heatsink tube has two diagonal corners forming two opposite pressing edges each of which is pressed by the first abutting section of each of the two first connecting portions and the second abutting section of each of the two second connecting portions.

5. The method as claimed in claim 1 , wherein the third step of mounting the first molded frame on a heatsink fin module further includes:

fully fitting the heatsink fin module in the first molded frame.

6. The method as claimed in claim 1 , wherein the third step of mounting the first molded frame on a heatsink fin module further includes:

fully fitting the heatsink fin module in the first molded frame, with two sides of the heatsink fin module resting on and covered by the two first connecting portions of the first molded frame.

7. The method as claimed in claim 1 , wherein the first step further includes:

disposing each of the two first connecting portions of the first molded frame at an upright flat state.

8. The method as claimed in claim 1 , wherein the first step further includes:

disposing each of the two second connecting portions of the second molded frame at an upright flat state.

9. The method as claimed in claim 1 , wherein the first abutting section and each of the two first connecting portions of the first molded frame form an L-shaped configuration.

10. The method as claimed in claim 1 , wherein the second abutting section and each of the two second connecting portions of the second molded frame form an L-shaped configuration.

11. The method as claimed in claim 1 , wherein each of the two first connecting portions of the first molded frame has a height equal to a thickness of the heatsink fin module.

12. The method as claimed in claim 1 , wherein each of the two second connecting portions of the second molded frame has a height equal to a thickness of the heatsink fin module.

13. The method as claimed in claim 1 , wherein the heatsink fin module has a flat shape.

14. The method as claimed in claim 1 , wherein the third step of mounting the second molded frame on the first molded frame further includes:

closely fitting the second molded frame onto the first molded frame.