CN101903160A - 用于接合孔格吸音板的方法 - Google Patents

用于接合孔格吸音板的方法 Download PDF

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CN101903160A
CN101903160A CN200880121882XA CN200880121882A CN101903160A CN 101903160 A CN101903160 A CN 101903160A CN 200880121882X A CN200880121882X A CN 200880121882XA CN 200880121882 A CN200880121882 A CN 200880121882A CN 101903160 A CN101903160 A CN 101903160A
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让-伯纳德·瓦舍
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Safran Nacelles SAS
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Abstract

本发明涉及一种用于将具有蜂窝型孔格结构的第一吸音板(2)与第二板(2’)接合的方法，其中所述方法包括以下步骤：将具有与腔室(3)相应的形状的至少一个轴柄(5、8)插入到位于所述吸音板的接合边缘(6)附近的至少一个腔室(3)中，使得辊子(12)在所述吸音板的所述接合边缘上滚动，将所述吸音板的所述接合边缘与所述第二板的接合边缘(6’)接合在一起，并且施加连接物而连接所述两个接合边缘。

Description

用于接合孔格吸音板的方法
本发明涉及一种用于将具有蜂窝型孔格结构的第一吸音板与第二板接合的方法。
此方法更加特别地用于装配喷气发动机机舱的吸音板的组装。
事实上，飞机喷气发动机产生很大的噪音污染。非常希望减少这种污染，倘若所使用的喷气发动机变得越来越强劲，则更是如此。包围着喷气发动机的机舱的设计在减少这种噪音污染方面起着重要的作用。
为了进一步改善飞行器的吸音性能，机舱上设有吸音板，其目的在于减小由于空气通过喷气发动机的气流循环以及机舱结构的振动而产生的噪音。
公知的用于吸收这些噪音的吸音板为夹层式结构。这些吸音板通常包括一层或多层孔格芯体结构(通常称为“蜂窝”结构)。在这些层的所谓外面(也就是在径向上离发动机轴线最远的面)上能够涂覆不透气的表层(称为“实心”表层)，并且在这些层的内面(也就是在径向上最靠近发动机轴线的面)上能够涂覆透气的穿孔表层(称为“吸音”表层)。
在已知的方式中，孔格芯体结构通过具有大体六边形或椭圆形腔室的孔格单元接合在一起而形成。
吸音板的吸音性能(也就是与噪音的频率和噪声级有关的噪音吸收率)尤其依赖于孔格单元的接合。
侧向端面的接合通常利用具有很强膨胀能力的诸如粘合剂AFM
Figure BPA00001161100300011
的发泡粘合剂来实现。在孔格单元的邻接边缘处涂覆粘合剂，在粘合剂膨胀期间，该粘合剂由于形成过大尺寸而堵塞腔室。该过大尺寸的不利之处在于：减小了孔格结构的有效吸音表面，并且还造成突然的阻抗中断，所述突然的阻抗中断是使得吸音板在喷气发动机运转期间的吸音性能降低的因素之一。
此外，在孔格板组装之前，需要将孔格板切割成所需的尺寸。
该切割操作产生了接合边缘，在该接合边缘处的腔室可能被压碎和破坏，这进一步地降低了最终的吸音性能。
还值得注意的是，在切割操作后，所得到的接合边缘具有从接合边缘处伸出的腔室壁残余，这些腔室壁残余会使得组装区域的厚度紊乱。
通过开放位于设计成待接合边缘处的腔室而将多个孔格单元边挨边地接合在一起是公知的，将腔室及开口彼此叠搭也是公知的。
但是，这种孔格芯体结构的应用不适用于仅包含一个孔格单元的孔格芯体结构。此外，该应用是复杂的。
为了解决上述缺点，本发明涉及一种用于将具有蜂窝型孔格结构的第一吸音板与第二板接合的方法，所述方法包括以下步骤：
-将具有与腔室相应的形状的至少一个轴柄插入到位于吸音板的接合边缘附近的至少一个腔室中，
-使得辊子在吸音板的所述接合边缘上滚动，
-将所述吸音板的所述接合边缘与所述第二板的接合边缘接合在一起，并且通过施加连接物而连接上述两个接合边缘。
优选地，所述连接物为粘接物。
有利地，所述粘接物为施加在所述两个接合边缘的至少一个上的粘接膜。
有利地，第二板为具有孔格结构的吸音板。
优选地，在所述第二吸音板上也实施引入至少一个轴柄和滚动辊子的步骤。
有利地，向位于所述接合边缘附近的每一个腔室中引入轴柄。
还有利地，特征在于向多个腔室中引入轴柄是同时进行的。
借助于以下的详细描述以及参照附图，将更好地理解本发明的实施。
图1为使得可以实施所述方法的装置的示意图。
图2为示出实施所述方法后的吸音板的示意图。
图3为接合后的两个吸音板的示意图。
图1示出了装置1，装置1用于实施根据本发明的方法，以接合具有包括六边形腔室3的孔格结构的吸音板2。
该装置包括上板4，该上板4承载了多个轴柄5，其中每个轴柄5大体具有腔室3形式的截面并且按照一定间隔设置，由此使得吸音板2的接合边缘6的腔室3能够每隔一个引入一个轴柄5。
装置1还包括下板7，该下板7也承载了多个轴柄8，其中每个轴柄8大体具有腔室3形式的截面并且按照一定间隔设置，由此使得吸音板2的接合边缘6的腔室3能够每隔一个引入一个轴柄8。
该装置还包括用于保持吸音板的下板9和上板10，该下板9和上板10均具有能够由轴柄5、8贯穿的开口11。
该装置1最后包括辊子12，辊子12设置成能够沿着吸音板2的接合边缘6滚动。
对于沿着接合边缘6(设计用于与另一吸音板接合)切下的吸音板2，上板4和下板7的轴柄5、8被引导穿过保持板9、10并位于相应的腔室3中。
上板4的每个轴柄5因此插入腔室3，而该腔室3旁边的腔室3则被下板7的轴柄8穿过。
轴柄5、8穿入腔室3中使得可以在由于切割吸音板2而导致的任何变形或破碎后对腔室3再成型。
一旦轴柄5、8被引入腔室3，由于辊子12(其沿着接合边缘6的整个长度滚动)的作用，接合边缘6于是自身成型。
因此，由于切削而导致的任何孔格壁60残余被压平和压倒而紧贴着接合边缘6。
在该成型操作过程中，轴柄5、8使得辊子12不至于压坏腔室。
利用图1所示的装置而成型的孔格吸音板2在图2中示出。
沿着接合边缘6’在第二吸音板2’上重复该方法。
这样成形的两个吸音板2、2’的接合是通过在接合边缘上施加粘接膜和互锁而传统实现的。这样组装的两个吸音板2，2’在图3中示出。
尽管仅通过一个具体实施例对本发明进行了描述，但是显然本发明并不限于该具体实施例，本发明涵盖了落入本发明保护范围之内的所有技术上等同的手段及其结合。特别地，吸音板能够和非吸音板接合，并且能够使用其他的粘接物。

Claims (7)

1.一种用于将具有蜂窝型孔格结构的第一吸音板(2)与第二板(2’)接合的方法，包括以下步骤：
-将具有与腔室(3)相应的形状的至少一个轴柄(5、8)引入到位于所述吸音板的接合边缘(6)附近的至少一个腔室(3)中，
-使得辊子(12)在所述吸音板的所述接合边缘上滚动，
-将所述吸音板的所述接合边缘与所述第二板的接合边缘(6’)接合在一起，并且通过施加连接物而连接所述两个接合边缘。
2.根据权利要求1所述的方法，其特征在于，所述连接物为粘接物。
3.根据权利要求2所述的方法，其特征在于，所述粘接物为施加在所述两个接合边缘(6，6’)中的至少一个上的粘接膜。
4.根据权利要求1所述的方法，其特征在于，所述第二板为具有孔格结构的吸音板(2’)。
5.根据权利要求4所述的方法，其特征在于，在所述第二吸音板(2’)上也实施引入轴柄(5、8)和滚动辊子(12)的步骤。
6.根据权利要求1-5中任一项所述的方法，其特征在于，向位于所述接合边缘(6、6’)附近的每一个腔室(3)引入轴柄(5、8)。
7.根据权利要求1-6中任一项所述的方法，其特征在于，向多个腔室(3)中引入轴柄(5、8)是同时进行的。
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US8273204B2 (en) 2012-09-25
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