Method and apparatus for manufacture of printed circuit cards
    5.
    发明授权
    Method and apparatus for manufacture of printed circuit cards 失效
    制造印刷电路卡的方法和装置

    公开(公告)号:US5394609A

    公开(公告)日:1995-03-07

    申请号:US142997

    申请日:1993-10-26

    Abstract: Disclosed is a method of populating printed circuit boards with surface mount technology devices in a multi-board work board holder. The method includes the steps placing the printed circuit boards into a multi-board work board holder having a plurality of apertures corresponding to the individual printed circuit boards. The multi-board work board holder is placed onto a surface mount technology production line, and solder paste is selectively applied onto contact pads on surfaces of the printed circuit boards. Integrated circuit chips are next placed onto the solder paste bearing surface of the printed circuit boards, with the contact leads of the integrated circuit chips bearing on deposited solder paste. The printed circuit boards and the work board holder are heated to the reflow temperature of the solder. The x-y plane and z axis coefficients of thermal expansion of the multi-board work board holder are matched to the x-y plane and z-axis coefficients of thermal expansion of the printed circuit boards to avoid warpage and misalignment of the printed circuit boards.

    Abstract translation: 公开了一种在多板工作板固定器中用表面贴装技术装置填充印刷电路板的方法。 该方法包括将印刷电路板放置到具有对应于各个印刷电路板的多个孔的多板工作板保持器中的步骤。 将多板工作板固定器放置在表面安装技术生产线上,并且将焊膏选择性地施加到印刷电路板表面上的接触焊盘上。 集成电路芯片接下来放置在印刷电路板的焊膏支撑表面上,集成电路芯片的接触引线承载沉积的焊膏。 印刷电路板和工作板支架被加热到焊料的回流温度。 多板工作板支架的x-y平面和z轴热膨胀系数与印刷电路板的x-y平面和z轴热膨胀系数匹配,以避免印刷电路板的翘曲和不对准。

    Intelligent touch integrated machine shell

    公开(公告)号:USD1028973S1

    公开(公告)日:2024-05-28

    申请号:US29794932

    申请日:2021-06-16

    Applicant: Simon Yu

    Designer: Simon Yu

    Abstract: FIG. 1 is a perspective view of an intelligent touch integrated machine shell showing my new design;
    FIG. 2 is a front elevational view thereof;
    FIG. 3 is a rear elevational view thereof;
    FIG. 4 is a left side elevational view thereof;
    FIG. 5 is a right side elevational view thereof;
    FIG. 6 is a top plan view thereof; and,
    FIG. 7 is a bottom plan view thereof.
    The broken lines throughout the drawing figures depict portions of the intelligent touch integrated machine shell that form no part of the claimed design.

    Vehicle control panel
    7.
    外观设计
    Vehicle control panel 有权
    车控面板

    公开(公告)号:USD586278S1

    公开(公告)日:2009-02-10

    申请号:US29319920

    申请日:2008-06-17

    Applicant: Simon Yu

    Designer: Simon Yu

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