| 摘要 |
PURPOSE:To eliminate the necessity of set-changing of magazine, make it possible to supply a large amount of lead frames to each device from the stacked magazines and improve working efficiency by continuously executing a series of processes for depression of island of lead frame into the recessed part, prefoaming and die-bonding. CONSTITUTION:A lead frame 1 is supplied sheet by sheet to the supply side of guide rail 12 from magazine 10 by the lead frame supply device 11. The lead frame is depressed by a punch 13a and lower die 13b of the island depression apparatus 13 and the island 2 is recessed. The depressed lead frame 3 is sent to the prefoaming apparatus 14 and a prefoam material 16 is dropped on the island 2 from a nozzle 14a. It is then sent to a die bonding apparatus 15, a collet 15a moves downward and the vacuum-sucking die 17 is bonded to the island 2 through the prefoaming material 16. |
