| 摘要 |
PCT No. PCT/US91/00288 Sec. 371 Date Jul. 7, 1992 Sec. 102(e) Date Jul. 7, 1992 PCT Filed Jan. 15, 1991 PCT Pub. No. WO91/11094 PCT Pub. Date Jul. 25, 1991.An invertor (10) is disclosed including first and second probes (12, 14) which are pivotably mounted to a U-shaped housing (20) and to a block (18) which is reciprocally mounted to the housing (20) by guide shafts (38). The block (18) is reciprocated by a rotary actuator (42) between a first position where the probes (12, 14) are in a parallel relation and a second position where the probes (12, 14) are in line. The suction pin (80) of the first probe (12) is extended to attach to the first surface (96) of the chip (98) and then retracted. The probes (12, 14) are then moved to their in line relation where the chip (98) is passed from the first probe (12) to the second probe (14) by attaching the opposing surface (100) of the chip (98) to the suction pin (80) of the second probe (14). After moving the probes (12, 14) to their parallel relation, the suction pin (80) of the second probe (14) is extended to place and release the chip (98). In the most preferred form, probes (12, 14) include a housing (72) divided into upper and lower chambers (74, 76) by an insert (78) which also reciprocally receives the suction pin (80). The suction pin (80) includes a piston (86) to define a pressure chamber (88) with the insert (78). Chambers (74, 88) are subjected to fluid pressure, vacuum, or vented to attach the suction pin (80) to the chip (98) and/or to reciprocate the suction pin (80) within the housing (72). |
