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    • 51. 发明申请
    • FILTRATION OF FLUX CONTAMINANTS
    • 过滤污染物的过滤
    • WO2003090507A1
    • 2003-10-30
    • PCT/US2003/012018
    • 2003-04-17
    • SPEEDLINE TECHNOLOGIES, INC.DAUTENHAHN, Jon, M.
    • DAUTENHAHN, Jon, M.
    • H05K13/04
    • H05K13/0465B23K3/08
    • A two-stage filtration system is coupled with an oven, such as a solder reflow oven, to remove a vapor stream from the oven and to remove organic compounds that have volatilized from a solder flux and other contaminants from the vapor stream. The filtration system includes a first stage for trapping larger particles and a second stage including a packed bed of wettable media, such as steel balls, for trapping smaller particles and serving as a nucleation site for condensed organic compounds. The first stage can be a centrifugal self-cleaning element in the form of a mesh strainer coupled with a rotary motor for spinning the mesh strainer.
    • 两级过滤系统与诸如焊料回流炉的烘箱结合,以除去来自烘箱的蒸汽流,并除去从焊剂和其它污染物从蒸汽流中挥发的有机化合物。 过滤系统包括用于捕获较大颗粒的第一阶段和包括诸如钢球的可湿性介质填充床的第二阶段,用于捕获较小的颗粒并用作冷凝的有机化合物的成核位点。 第一阶段可以是与用于纺丝网状过滤器的旋转马达相结合的网状过滤器形式的离心自清洁元件。
    • 52. 发明申请
    • METHOD AND APPARATUS FOR HOLDING A PRINTED CIRCUIT BOARD IN A PRECISE POSITION DURING PROCESSING
    • 用于在处理过程中将印刷电路板保持在精确位置的方法和设备
    • WO0135708A3
    • 2001-12-27
    • PCT/US0042009
    • 2000-11-08
    • SPEEDLINE TECHNOLOGIES INC
    • ASHTON AUGUSTUS TWILLSHERE RICHARD
    • H05K3/12H05K13/00H05K13/04
    • H05K13/0069H05K3/1216
    • A printed circuit board holding mechanism includes a vertically movable pin support table having at least one tooling pin mounted thereon. A pair of elongated conveyor rails are separated and oriented parallel with respect to each other. The conveyor rails each support a number of pulleys, which pulleys have a drive belt mounted thereon. A segment of each conveyor rail includes a clamping rail that is spring biased downwardly. Clamping rails mounted on opposing rails are oriented to face each other so that foils associated with each clamping rail can engage opposite top edges of a printed circuit board when the movable pin support table is actuated upwardly. The movable pin support table is actuated upwardly so that the tooling pin mounted thereon contacts a bottom surface of the printed circuit board to move the printed circuit board up and off of the drive belts and into engagement with the foils associated with the clamping rails. On or more slotted support strips mounted on the rails are contacted by the pin support table and move with the table to contact the bottom surface of the printed circuit board to provide edge support for the board. In this orientation, the printed circuit board is no longer supported by the resilient drive belts, rather, the printed circuit board is securely held between the clamping rails and the tooling pin.
    • 印刷电路板保持机构包括可垂直移动的销支撑台,其上安装有至少一个工具销。 一对细长输送轨道相互平行地分开并定向。 输送轨道各自支撑多个皮带轮,该皮带轮上安装有传动皮带。 每个输送轨道的一段包括向下弹簧偏压的夹轨。 安装在相对的轨道上的夹持轨道被定向为彼此面对,使得当可移动的销支撑台被向上致动时,与每个夹持轨道相关联的箔可以接合印刷电路板的相对的顶部边缘。 向上致动可动销支撑台,使得安装在其上的工具销接触印刷电路板的底表面,从而使印刷电路板向上移动并从驱动带脱离并与与夹紧轨道关联的箔接合。 安装在导轨上的一个或多个开槽支撑条与销支撑台接触,并随着工作台移动而与印刷电路板的底表面接触,以为板提供边缘支撑。 在此方向上,印刷电路板不再由弹性驱动带支撑,而是印刷电路板牢固地保持在夹持导轨和工具销之间。