Die set for welding fins and a base plate of a heat sink
US6223970A · kind A · utility
Inventor
Key dates
| Filing date | May 11, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | May 11, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A die set for welding fins and a base plate of a heat sink, it is used to complete fixing of the U shaped heat sinking fins and the base plate of the heat sink by welding. It has the object to increase heat-sinking efficiency and to render the welding process to finish fast. The die set comprises mainly a first die seat and a second die seat. Wherein, the first die seat is disposed beneath the base plate of the heat sink to support the latter. While the second die seat is disposed above the U shaped heat sinking fins, and is comprised of a pressing portion and a connecting portion. The pressing portion is provided in corresponding to the lower bends of the U shaped fins with pressing bars. The connecting portion having a plurality of connecting ends is provided on the bottoms of the pressing bars to supply energy to generate large heat. When the pressing portion exerts force on the pressing bars, the U shaped fins are pressed against the top of the base plate and get large heat by means of the connecting portion. Thereby, the U shaped heat sinking fins are quickly welded to the base plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.