Patent ID: 6260259
Filing Date: 2001-07-17
Classification: B23K,B23P,B65G,H01L,H05K,Y10T

Abstract:
A solder ball mounting device for mounting solder balls on a workpiece, comprising:a solder ball supply in which the solder balls are stored;a sucking head having a plurality of solder ball sucking holes in a lower surface thereof;sucking means for creating a vacuum in said sucking head, said sucking means coupled to said sucking head so as to suck the solder balls in said ball sucking holes;lift means for vertically moving said sucking head; andpressure adjusting means for adjusting and setting a degree of vacuum in said sucking head to a first pressure for sucking the solder balls, and to a second pressure which is lower in the degree of vacuum than the first pressure and is high enough to hold the solder balls sucked;wherein, when said sucking head is lowered by said lift means to a lower position where said sucking head sucks the solder balls in said ball sucking holes, said pressure adjusting means is operable to adjust and set the degree of vacuum in said sucking head to the first pressure, and when the degree of vacuum in said sucking head reaches the first pressure, said lift means is operable to move said sucking head upwardly, and thereafter said pressure adjusting means is operable to adjust the degree of vacuum in said sucking head thereby setting to said second pressure.