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    Apparatus for supplying uniform tail lengths
    9.
    发明授权
    Apparatus for supplying uniform tail lengths 失效
    用于提供均匀尾巴长度的装置

    公开(公告)号：US4771930A

    公开(公告)日：1988-09-20

    申请号：US879939

    申请日：1986-06-30

    申请人： Gary S. Gillotti ,  David A. Leonhardt

    发明人： Gary S. Gillotti ,  David A. Leonhardt

    IPC分类号： B23K20/00 ,  H01L21/00 ,  B23K37/00

    CPC分类号： H01L24/85 ,  B23K20/005 ,  H01L24/78 ,  H01L2224/48472 ,  H01L2224/78302 ,  H01L2224/78313 ,  H01L2224/78318 ,  H01L2224/786 ,  H01L2224/851 ,  H01L2224/85205 ,  H01L2224/859 ,  H01L2924/00014 ,  H01L2924/01027 ,  H01L2924/01033 ,  H01L2924/01065 ,  H01L2924/01082

    摘要： A novel and improved monitoring and detecting circuit is provided for an automatic wedge wire bonder. The detecting circuit is initiated at the second wire bond while the bonding tool is pressing the bonding wire on the pad or electrode. If the fine wire is missing under the working face of the bonding tool, the sensing circuit initiates a signal which is detected by control means so as to initiate an interrupt signal stopping the operation of the wire bonder. Sensing of the presence or absence of a wire under the bonding wedge at a bond may take place at a first or a second wire bond. At the second wire bond, the novel sensing and detecting circuit is actuated to determine the amount of longation that takes place in the bonding wire between the bonding wedge and the wire clamps so as to correct the movement of the wire clamps when supplying a tail under the working face of the bonding tool and to ensure that a uniform tail length is supplied unaffected by the elongation of the bonding wire.

    摘要翻译： 为自动楔形丝焊机提供了一种新颖且改进的监控和检测电路。 检测电路在第二线接合时启动，而接合工具将焊接线焊接在焊盘或电极上。 如果在焊接工具的工作面下缺少细线，则感测电路启动由控制装置检测到的信号，以便启动中断信号来停止引线接合器的操作。 可以在第一或第二引线接合处发生在键合处的接合楔下存在或不存在电线的情况。 在第二引线接合时，启动新的感测和检测电路以确定在接合楔和线夹之间的接合线中发生的长度的量，以便在提供尾部时修正线夹的移动 焊接工具的工作面，并且确保提供均匀的尾部长度，而不受接合线的伸长的影响。