| 摘要 |
PURPOSE:To prevent the interruption of work as well as to improve the working efficiency for the subject pellet bonding by a method wherein non defective pellets are carried on to the plurality of pockets provided on a positioning plate from the prescribed location and a device, with which each pocket location is shifted to the set position successively, is provided. CONSTITUTION:The pellet 1 arranged on a jig 8 is discriminated between the good and bad using a TV camera, for example, and the good pellets are carried and placed on the plurality of pockets provided on the positioning plate 9 by a pickup 3. The pellet 1 placed on the pocket 10 is carried to a lead frame 6, for example, by a collet 5 and a bonding is performed on it. An actuator 11, coupled to the positioning plte 9, is operated by the signal sent from the camera 3 and the position of the pocket 10 can be shifted to the set position successively. For example, the positioning plate is in operation when a defective pellet is carried in succession and the pellet 1 held in each pocket is feeded to the lead frame in succession. Through these procedures, the cycle time of the bonding is maintained constant, the interruption of work is prevented and the work can be performed efficiently. |
