Patent ID: 9362250
Filing Date: 2016-06-07
CPC Classification: H01L,Y10T

Claim Text:
1. A die bonder comprising: a collet holder that holds a collet by a magnet; a bonding head that includes the collet holder at its tip end and absorbs a die with the collet to bond the die on a substrate; a collet replacing unit having a discarding unit that includes a first opening portion having plural first engagement portions engaged with the collet on the upper side and discards a used collet, a supplying unit that includes a second opening portion having plural second engagement portions engaged with the collet on the upper side, stacking plural unused collets, a moving means that moves the unused collets to the second opening portion by a compression spring, and a protrusion prevention means to prevent the unused collets from protruding from the second opening portion by the plural second engagement portions; and a control device that inserts the collet holder from the first opening portion, controls engagement of the engagement portions with the collet holder to discard used collets to the discarding unit, inserts the collet holder from the second opening portion, and ejects an upper collet of the plural stacked unused collets to be attached to the collet holder, wherein the collet holder comprises attachment confirmation means that confirms attachment of at least one of the unused collets, the attachment confirmation means confirms the attachment, based on either changes in a volume of flow flowing to an absorption hole of the bonding head including the collet holder or differential pressure, and the attachment confirmation means includes an orifice provided at the absorption hole of the bonding head including the collet holder, and a confirmation bar that moves the orifice when the collet holder holds the collet.