Electronic component mounting apparatus and nozzle replacement m

Details Electronic component mounting apparatus and nozzle replacement m Electronic component mounting apparatus and nozzle replacement m

1998-08-07

1999-12-07

Hughes, S. Thomas

Metal working

Method of mechanical manufacture

With testing or indicating

29833, 29743, 29721, 29740, B23Q 1700

Patent

active

059962038

ABSTRACT:
An electronic component mounting apparatus for determining whether or not a nozzle replacement operation is successfully performed. A horizontal array of nozzles are accommodated in the holder in a nozzle stocker, and a light emitting device and a light receiving device are arranged so that the light path between both runs above the nozzles. The nozzle stocker is arranged in a travel path of a feeding head. The nozzle mount of the feeding head returns a used nozzle into the holder or mounts a new nozzle thereon. When any nozzle remains lifted from the holder intercepting the light path, a returning operation of the used nozzle is determined to be a failure. When a nozzle replacement is performed, its success or failure is reliably determined by detecting a intercepting height of light and release height of light by the nozzle and nozzle mount, respectively.

REFERENCES:
patent: 4790069 (1988-12-01), Maruyama
patent: 5003692 (1991-04-01), Izumi et al.
patent: 5018266 (1991-05-01), Hutchinson et al.
patent: 5105528 (1992-04-01), Soth et al.
patent: 5331831 (1994-07-01), Schneider
patent: 5619328 (1997-04-01), Sakuri
patent: 5741114 (1998-04-01), Onodera
patent: 5749142 (1998-05-01), Hanamura

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