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1. 发明授权

US4186918A Method and apparatus for locating and aligning flimsy sheets 失效
标题翻译：用于定位和对齐脆弱片材的方法和装置
公开(公告)号：US4186918A
公开(公告)日：1980-02-05
申请号：US859777
申请日：1977-12-12
申请人： Walter W. Ficker , David E. Lonser , William G. Rance , Alfred A. Stricker , Walter von Kaenel
发明人： Walter W. Ficker , David E. Lonser , William G. Rance , Alfred A. Stricker , Walter von Kaenel
IPC分类号： H05K13/02 , B28B1/30 , B32B15/04 , H01L21/67 , H01L21/677 , H01L21/68 , H05K3/46 , B65H5/22 , B65H9/08
CPC分类号： H01L21/68 , H01L21/67 , H01L21/67787
摘要： A method and apparatus permitting accurate and repeatable steps of location and alignment of flimsy sheets during their transfer. A preferred embodiment comprises a sheet handler and method for aligning unfired ceramic green sheets used in multi-layer ceramic semiconductor packages. The thin flexible sheets are square or rectangular in shape and are provided with holes accurately punched in each corner thereof for alignment purposes. The sheets are moved by a vacuum input transfer head into orientation with a porous registration surface of an alignment fixture. The sheet is then trapped between opposed pressure zones emanating from the input transfer head and through the porous registration surface, respectively. With the sheet stabilized between the pressure zones four bullet-nosed alignment pins are raised from the registration surface into contact with the holes in the corners of the green sheet, thereby accurately aligning the sheet with respect to the alignment fixture. The input transfer head is then withdrawn and an output transfer head picks up the aligned sheet via vacuum means and transfers it to other processing locations. In an alternate embodiment the pressure zones are created between the output transfer head and the registration surface of the alignment fixture.
摘要翻译：一种方法和装置，允许脆弱片在其转移期间的位置和对准的精确和可重复的步骤。优选实施例包括用于对准在多层陶瓷半导体封装中使用的未焙烧陶瓷生片的片处理器和方法。薄的柔性片的形状为方形或矩形，并且在其每个拐角处设有准确冲孔的孔用于对准目的。纸张通过真空输入转印头移动到具有对准夹具的多孔对准表面的方向上。然后将片材分别从输入转印头发出的相对的压力区域和多孔配准表面之间分配。当片材在压力区域之间稳定时，四个子弹对准销从对准表面升高成与生片的角部接触，从而使片材相对于对准夹具精确对准。然后输入传送头被抽出，输出传送头通过真空装置拾取对准的片材并将其传送到其它处理位置。在替代实施例中，在输出转印头和对准夹具的配准表面之间产生压力区。

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