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    Method of forming composite material articles
    22.
    发明授权
    Method of forming composite material articles 失效
    形成复合材料制品的方法

    公开(公告)号：US4608220A

    公开(公告)日：1986-08-26

    申请号：US684245

    申请日：1984-12-20

    申请人： John E. Caldwell ,  Michael R. Chapman ,  Kenneth J. Goodwin ,  Patrick A. Lowery

    发明人： John E. Caldwell ,  Michael R. Chapman ,  Kenneth J. Goodwin ,  Patrick A. Lowery

    IPC分类号： A43B17/14 ,  B29C43/12 ,  B29C43/36 ,  B29C43/56 ,  B29C70/44 ,  B29C43/10 ,  B29C43/14 ,  B29C43/20

    CPC分类号： B29C43/3642 ,  A43B17/14 ,  B29C70/44 ,  B29C2043/043 ,  B29C2043/3644 ,  B29C2043/3655 ,  B29C2791/001 ,  B29C33/08 ,  B29C43/12 ,  B29C43/52 ,  B29C43/56 ,  B29C70/46

    摘要： Improvements in manufacturing composite material articles. The use of male molds in forming such articles has the problem of requiring large tolerances for the outer dimensions of the articles. The use of female molds has the problem of inaccurate forming of highly contoured inner surfaces. The invention produces an accurately formed inner surface by molding material against a male mold, and outer dimensions within close tolerances by curing the material in a female mold. A male caul (34) is positioned on a male mold (30). A preplied stack (32) of composite material is supported on a blanket (36) and held in position against caul (34) with caul (34) and mold (30) in an inverted position. Stack (32) is heated. A vacuum causes blanket (36) to mold stack (32) against caul (34). Mold (30) is rotated 180.degree., and stack (32) is allowed to cool. A female mold surface (43) is placed into contact with formed stack (32). Male mold (30) is moved away, leaving caul (34 ) and formed stack (32) in female mold (42). Stack (32) is cured in female mold (42), preferably by a vacuum bagging operation.

    摘要翻译： 制造复合材料制品的改进。 在形成这种制品时使用阳模具有对物品的外部尺寸需要大的公差的问题。 使用阴模具有形成高度轮廓的内表面不精确的问题。 本发明通过在阳模上模制材料来产生精确形成的内表面，并且通过在阴模中固化材料，在紧密公差内外部尺寸。 雄性塞子（34）定位在阳模（30）上。 复合材料的预制叠层（32）被支撑在橡皮布（36）上，并且以相反的位置将卡尔（34）和模具（30）保持在与盖（34）相对的位置上。 堆叠（32）被加热。 真空使得毯（36）抵抗卡尔（34）模制堆叠（32）。 模具（30）旋转180°，并使堆叠（32）冷却。 阴模表面（43）被放置成与形成的叠层（32）接触。 将阳模（30）移开，留下卡尔（34）并在阴模（42）中形成堆叠（32）。 堆叠（32）在阴模（42）中固化，优选通过真空装袋操作。

    Flow molding
    23.
    发明授权
    Flow molding 失效
    流动成型

    公开(公告)号：US4441876A

    公开(公告)日：1984-04-10

    申请号：US301313

    申请日：1981-09-11

    申请人： Michel Marc

    发明人： Michel Marc

    IPC分类号： B29C33/08 ,  B29C33/40 ,  B29C35/08 ,  H05B6/54 ,  H05B6/62 ,  B29C1/02 ,  B29G7/00

    CPC分类号： H05B6/62 ,  B29C33/08 ,  B29C33/405 ,  H05B6/54 ,  B29C2035/0861 ,  B29K2027/06 ,  B29K2083/00 ,  B29K2105/0061 ,  B29K2105/16 ,  B29L2031/504 ,  Y10S425/013 ,  Y10S425/044

    摘要： A flow molding process and associated molding apparatus for making plastic parts or pieces utilizing a radio frequency heating fluid. The molding apparatus includes a pair of spaced electrodes, at least one of which supports a molding material which may be in the form of an imprinted diaphragm (mold) for forming an imprint on at least one side of the plastic piece being fabricated. The apparatus is, in particular, employed for forming pieces having different thicknesses throughout, the purpose being to provide uniform heating throughout the piece being fabricated regardless of the varying thicknesses thereof. This is accomplished by maintaining the capacitance constant throughout all different thickness sections of the piece. This may be accomplished by equalizing the dielectric constants between the thermoplastic or the like material and the diaphragm (mold) material. In another version of the invention the capacitance is equalized by altering the spacing between the main electrodes in the different thickness sections.

    摘要翻译： 流动模制工艺和相关联的模制设备，用于利用射频加热流体制造塑料部件。 模制设备包括一对间隔开的电极，其中至少一个支撑模制材料，该模制材料可以是压印隔膜（模具）的形式，用于在所制造的塑料件的至少一侧上形成压印。 特别地，该装置用于形成整个具有不同厚度的片材，其目的是在制造的整个片材上提供均匀的加热，而不管其变化的厚度如何。 这是通过在片的所有不同厚度部分保持电容恒定来实现的。 这可以通过均衡热塑性材料等与隔膜（模具）材料之间的介电常数来实现。 在本发明的另一个版本中，通过改变不同厚度部分中的主电极之间的间距来均衡电容。

    Flow molding
    24.
    发明授权
    Flow molding 失效
    流动成型

    公开(公告)号：US4268238A

    公开(公告)日：1981-05-19

    申请号：US88776

    申请日：1979-10-29

    申请人： Michel Marc

    发明人： Michel Marc

    IPC分类号： B29C33/04 ,  B29C33/08 ,  B29C35/04 ,  B29C35/08 ,  B29C43/12 ,  B29C59/02 ,  B30B5/02 ,  B29H5/26

    CPC分类号： B30B15/34 ,  B29C33/04 ,  B29C33/08 ,  B29C43/12 ,  B29C59/02 ,  B30B5/02 ,  B29C2035/042 ,  B29C2035/044 ,  B29C2035/0861

    摘要： A three-dimensional flow molding process and associated molding apparatus for making plastic parts or pieces utilizing a radio frequency heating field and means for applying constant pressure, along with an even temperature gradient, to the plastic part. In the process two metallic mold halves are joined clamping therebetween an imprinted diaphragm having the plastic on one side thereof between the diaphragm and one of the mold halves. In one version which may be preferred in constructing planar (two-dimensional) pieces or parts, pressure is applied directly by closing the mold halves and the diaphragm has a constant thickness therealong to provide even heating of the plastic that is being molded. In another version of the invention preferably for molding three-dimensional parts, a liquid conductor, such as mercury, or a sodium or graphite solution extends about the other side of the diaphragm in a space provided in one of the mold halves. In this version each of the mold halves is preferably provided with means for cooling. After the plastic, which may be in many different forms, is in place and the mold has been closed, the field may be applied for, for example, 5 seconds. The pressure on the mercury is maintained for the initial 5 second interval and for an additional like interval to produce a part of high quality having an excellent and consistent imprint from the diaphragm.

    摘要翻译： 用于利用射频加热场制造塑料部件的三维流动模制工艺和相关联的模制装置以及用于将恒定压力以及均匀的温度梯度施加到塑料部件的装置。 在该过程中，两个金属半模连接在其间夹紧，其压印隔膜在其隔膜与其中一个半模之间的一侧具有塑料。 在构造平面（二维）件或部件中可能优选的一种方案中，通过关闭半模直接施加压力，并且隔膜具有恒定的厚度以便均匀地加热待模制的塑料。 在本发明的另一个方案中，优选地用于模制三维部件，诸如汞的液体导体或钠或石墨溶液在设置在一个半模中的空间中围绕隔膜的另一侧延伸。 在该版本中，每个半模优选地设置有用于冷却的装置。 在可能具有许多不同形式的塑料就位并且模具已经关闭之后，该场可以被施加例如5秒钟。 汞的压力保持在初始的5秒间隔，并且为了产生高质量的一部分，具有来自隔膜的优良和一致的印记。