Patent ID: 6182884
Filing Date: 2001-02-06
Classification: B23K,H05K

Abstract:
A nozzle device for attaching chips to a substrate and/or detaching chips or other components from a substrate comprising:a housing having an upper wall section enclosing an internal hot gas chamber and a lower wall section configured to hold a solder connection containing chip to be attached to corresponding solder connection sites on a substrate and the housing having an open planar base which rests on the substrate surface;an inlet to the upper wall section for supplying hot gases to the housing;a planar support member in the lower portion of the housing positioned above the base and forming a recessed area below the support member at the lower end of the housing for holding the chip in the housing parallel to the planar base, the support member having an upper surface and a lower surface and having a plurality of peripheral through openings communicating with the gas chamber and the recessed area so that hot gases from the hot gas chamber pass through the openings and contact the chip;resilient member means attached to the lower surface of the support member and covering the lower surface of the support member; andvacuum means extending through said housing and communicating with the chip within said recess area wherein the vacuum holds the chip against the resilient member so that the resilient member is compressed and the lower portion of the solder connections extend below the base of the housing;wherein when the base of the nozzle containing the chip held therein by the vacuum means is placed on the substrate which substrate is positioned on a planar surface, a resilient pressure force is generated between the substrate and chip so that the solder connections on the chip are pressed against the corresponding solder connection sites on the substrate.