CN100594118C - 制造减厚轮胎帘布层的装置和方法 - Google Patents
制造减厚轮胎帘布层的装置和方法 Download PDFInfo
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Abstract
提供了一种制造具有缩减厚度和缩减帘线间距的加强帘布层的方法和装置。缩减的厚度和缩减的epi帘布层可以使用压延机构或横向给料挤出机构来形成。帘线可以埋入外部橡胶表面,或者可以从外部橡胶表面中露出。可选胶清橡胶涂层可以覆盖帘线以保护它们在制造中免受移动。
Description
技术领域
[001]本发明涉及一种充气轮胎,并且更特别地,本发明涉及用于轮胎的帘布层结构。
背景技术
[002]现代客车轮胎一般利用两个或多个帘布层或者由加强纤维或帘线编织而成的纤维层构成。在轮胎制造业中存在一种日益增加的趋向,就是在不牺牲结构完整性的条件下降低轮胎重量。一种减轻轮胎重量的方式就是去除不需要的帘布层。一般胎面以下的区域就是可以在帘布层厚度上予以减少的区域。即使是很少量的减少生产轮胎所需要的材料,对制造商而言,也能够在进行高产量的轮胎生产中导致材料成本的显著降低。因此存在对具有较低重量的轮胎的需求,这种轮胎提供了所需要的性能特性并且能够利用较少的材料以更低的成本而制造。
发明内容
[003]本发明提供了一种制造用于轮胎的加强帘布层的方法,所述方法包括包括以下步骤:在第一和第二压延辊筒之间压延基底橡胶涂层,在组配辊筒和第四压延辊筒之间压延胶清橡胶层,挤压多个帘线至胶清橡胶层之上形成帘线层,并使基底橡胶涂层与帘线层配合以形成帘布层。
[004]本发明在第二方面提供了制造帘布层的方法,包括:挤出多个帘线穿过横向头部挤出机,其中帘线在机头中列置,并形成橡胶基底层,其中帘线浸入基底层中。
[005]本发明在第二方面提供了一种帘布层,包括纯胶料橡胶层,和多个部分埋入橡胶层中的帘线。
[006]本发明将结合附图并参照对优选实施方案的下述说明得以更好的理解。
定义
[007]“扁平比”是指其断面高度与其断面宽度的比例。
[008]“轴向”和“沿轴向”是指平行于轮胎旋转轴的线或者方向。
[009]“胎圈”或者“胎圈芯”通常指的是包括环形抗拉构件的轮胎部分,径向内胎圈与将轮胎保持在轮辋上相关,并由帘布层帘线包绕和成形,带有或不带有其它增强元件如钢丝圈包布(flippers)、切片包布(chippers)、三角胶或填料、护趾胶和胎圈包布。
[0010]“带束结构”或者“加强带束层”指的是由平行的帘线构成的至少两个环形层或帘布层,帘线经过编织或未经编织,位于胎面下方,未锚定于胎圈上,并且左右帘线角度相对于轮胎赤道面均处于17°~27°的范围内。
[0011]“斜交轮胎”是指胎体帘布层中的加强帘线相对于轮胎赤道面以约25°~65°角度从一个胎圈到另一个胎圈横跨轮胎倾斜延伸,帘布层帘线在交叠的层中以相反的角度设置。
[0012]“缓冲层”或“轮胎缓冲层”含义与带束层或带束结构或加强带束层相同。
[0013]“胎体”是指轮胎帘布层材料的层压片与其它轮胎组件切成适于搭接、或已经搭接的长度,以构成圆柱形或环形。其它组件可以在胎体被硫化以构成模塑轮胎之前施加至胎体上。
[0014]“周向”是指沿垂直于轴向的环形胎面表面周边延伸的线或者方向;它还可以指相邻环形曲线组的方向,这些环形曲线的半径限定了胎面的轴向曲率,如在断面图中所示。
[0015]“帘线”是指一个包含有纤维的加强线股,包括纤维,用于增强帘布层。
[0016]“内衬”是指形成无内胎轮胎内表面并且将膨胀流体包含入轮胎内的层或弹性体层或其它材料层。
[0017]“插入物”是指一般用于加强泄气保用型轮胎胎侧的加强件;它还可以指用于支撑胎面的弹性体插入物。
[0018]“帘布层”是指用弹性体涂覆、径向配置的加强帘线层,或其它平行帘线。
[0019]“径向”和“沿径向”指的是沿径向朝向或者背离轮胎转动轴线的方向。
[0020]“径向帘布结构”是指一个或更多的胎体帘布层或至少一个具有以相对于轮胎赤道面65°~90°角度定向的加强帘线的帘布层。
[0021]“径向帘布轮胎”指的是一种带束式或者沿周向约束的充气轮胎,其中帘布层帘线以相对于轮胎赤道面成65°~90°之间的帘线角度从胎圈延伸到胎圈。
[0022]“胎侧”指的是位于胎面和胎圈之间的轮胎部分。
[0023]“层压结构”是指由一个或多个轮胎层、或者例如内衬、胎侧、任选帘布层等的弹性组件构成的未硫化结构。
附图说明
在附图中,
图1A和1B是帘布层(分别是第一和第二帘布层)第一具体实施方案的部分横断面图;
图2A和2B是帘布层(分别是第一和第二帘布层)第二具体实施方案的部分横断面图;
图3A、3B、3C、3D是帘布层第三具体实施方案的部分横断面图;
图4是用于成形帘布层的压延机构的侧视图;
图5是横向给料挤出机构的侧视图,该系统具有如图5A所示的机头以用于成形如图5B、5C和5D所示的帘布层。
图6是用于成形帘布层的压延机构第二具体实施方案的侧视图。
图7是用于成形帘布层的压延机构第二具体实施方案的侧视图。
图8-10是在本发明压延机构中使用的可选机头的前视图。
图11是轮胎组件的横断面图。
具体实施方式
[0025]轮胎中的任一或全部帘布层均可以包括一个或多个具有降低厚度的减厚(reduced gauge)帘布层,其厚度等于约30%~约100%标准帘布层测量厚度。此处所述的帘布层构造可以在诸如客车轮胎、货车轮胎、航空器轮胎或非路面轮胎等轮胎结构中使用。
[0026]在此,标准帘布层限定为具有在约.03~约.06英寸(一般为.045英寸)范围内的深度或厚度。标准帘布层一般具有在约18~约36epi(通常为约28epi)范围内的帘线间距,以及具有在约.020~约.04英寸范围内的帘线直径。轮胎中的帘线层可以具有不同厚度。可选地,一个或更多帘线层可以具有等于约30%~约100%标准帘线层epi间距的缩减帘线间距。可选地,在轮胎中任意或所有帘布层可以包括具有等于约30%~约100%正常帘布层测量厚度的缩减厚度,以及等于约30%~约100%epi间距的缩减帘线间距。
[0027]一个帘布层构造的实施例示于图1a和1b中。帘布层10的第一层和第二层可以各自具有处于约30%~约100%标准帘布层厚度的测量厚度,以及处于约30%~约100%epi标准帘线间距的帘线间距。在一个实施例中,帘布层10可以各自包括约50%标准厚度的测量厚度以及约50%标准帘线间距的缩减帘线间距。当将层10结合在一起时,两个层的总厚度为约100%标准厚度,并且具有约100%标准epi的结合epi帘线间距。然而,帘布层10可以具有各自不同的测量厚度和帘线间距,并且当将其层压在一起时,结合的总厚度可以导致不标准的厚度和帘线间距。
[0028]如图1B中所示,帘布层10的帘线可以在帘布层顶部边缘定向以使帘线12埋入橡胶层14中。第一层帘布10的帘线可以与第二层帘布的帘线形成错距设置,如图9B中所示。比如,当两个帘布层组装在一起时,它们可以具有一般帘布层的厚度和帘线间距。在一个实施例中,帘布层的厚度为约0.036英寸,以及其帘线直径为约0.026英寸。每一层的帘线间距为约14epi。如图1B所示,当被层压至一起时,结合层的整体测量厚度为约0.072英寸和28EPI。帘线被交错排开。
[0029]可选地,如图2A和2B所示,帘布层20具有浸入帘布层橡胶表面24约一半位置的帘线22。层20可以上下相邻叠置,以使第一帘布层的橡胶面或背面26与第二帘布层的上表面28紧密配合,如图2B所示。比如说,如果0.026英寸直径帘线在0.023英寸厚橡胶基底上使用,这就造成了在帘线下端至帘布层下端之间存在0.10的厚度“t”。在一种实施例中,帘布层20的厚度为约0.023英寸,以及帘线直径为约0.026英寸直径。每一层的帘线间距为14epi。当如图2B所示层压在一起时,结合层的整体测量厚度为约0.042英寸和28EPI。当帘布层组配在一起时,帘线优选为交错排列设置。
[0030]可选地,如图3A-3D所示,帘布层30具有浸入帘布层橡胶表面34约一半位置的帘线32,在帘线上带有胶清橡胶涂层36。层30可以上下相邻叠置,以使第一帘布层的橡胶面或背面与第二帘布层的上表面紧密配合,如图3D所示。层30可以组配成使得帘线面对面毗邻,其中上层帘线设置在下层帘线之间,如图3B、C所示。胶清涂层36在帘线32上方形成保护壁。胶清涂层可以包括橡胶薄层,具有一般处于约0.003至约0.007范围内的厚度。优选帘线在纯胶胶料和胶清涂层之间受到封装。
[0031]上述帘布层可以由如图4所示的压延机构400形成。将橡胶进给至第一压延辊筒402和第二压延滚筒404的辊隙中,以形成帘布层的基底橡胶层406。修整刀具408用于修整掉过量的橡胶以使基底橡胶层406形成预期的宽度。引出辊筒410用于导引基底橡胶层406并保持适当的拉伸力。将基底橡胶层406向组配辊筒412给料,组配辊筒具有设置成与基底橡胶层406紧密接触的机头414。多个帘线415通过机头进口给料以与越过组配辊筒412而安装的基底橡胶层接合。机头410保持预期的帘线间距。可用于机构400的机头的实施例如图8-10中所示,并且在于2005年9月30日提交的、号为11/240,430的共同未决专利申请中进行了更详细的描述,该申请在此引入以作为参考。
[0032]离开机头的帘线由于受到机头抵靠组配辊筒412的压力而被压入基底帘布层的上层。可选胶清橡胶涂层422可以作为盖层施加至帘线上方。将橡胶在两个辊筒418、420之间给料,两个辊筒之间具有预期的净空间隙以用于形成橡胶胶清涂层的所需厚度。胶清涂层422可以施加至帘线/橡胶层上方,其中压合辊筒414将胶清涂层压合至帘线/橡胶层上。修整刀具424将成形帘布层修整到预期宽度。
[0033]如在图1-3中所示的帘布层也可以由在图5中所示的横向给料挤出机构500形成。可以使用如在图5a中所示的横向给料挤出机头510,在用于将帘线容纳于其中的机头上板512上具有槽514。槽被间隔设置以与预期帘线epi间距相匹配。帘线受到上引辊筒520的拉伸穿过在横向给料挤出机头中的槽514。上引辊筒520的角度α是可调的,以便较紧或较松地靠着机头中的槽514拉伸帘线。角度越高,抵靠在槽514的帘线越紧。比如说,角度α可以在约20-60度的范围内。随着帘线受到拉伸穿过横向给料挤出机,它们得以被橡胶所涂覆。由横向头挤出机成形的合成帘布层530具有基底橡胶层532,该基底橡胶层带有浸入底层中的帘线534。使用橡胶薄层涂覆帘线。对生成的帘布层530可以进行顶对底的组配,如图5c中所示,或者将其中之一的帘布层倒装以使帘线得以面对面设置,如图5d中所示。
[0034]压延机构的第二具体实施方案如图6所示。将橡胶向第一压延辊筒602和第二压延辊筒604的辊隙中给料,从而形成帘布层的基底橡胶层600。修整刀具608用于修整掉过量的橡胶以形成基底橡胶层600的预期宽度。比如说,基底橡胶层可以修整成约3.7英寸宽的条带,具有约.030英寸的厚度。
[0035]将橡胶坯料向压延辊筒612、620的辊隙中给料,以便生成薄胶清橡胶涂层630,所述涂层可以具有例如约0.003~约0.005英寸的厚度。将多个帘线借助上述机头410压入胶清涂层630,并设置成与胶清涂层630紧密接触。机头410与组配辊筒612相邻安置,从而使帘线与胶清涂层630紧密接合。进给多个帘线使其穿过机头进口以进入与越过组配辊筒612而安装的胶清橡胶涂层630接合状态。机头保持预期帘线间距。帘线由于受到机头抵靠组配辊筒612的压力而被压入基底帘布层的上层。帘线可以由帘线压合辊筒632压合进入胶清涂层。将基底橡胶层600向组配辊筒612的辊隙中给料以与浸入帘线的胶清涂层650紧密接合,从而形成帘布层655。任选二级压合机660可以用于消除任何残留的陷入空气。在帘布层由辊筒680拉出压延机构之前,修整刀具670修整帘布层655至预期宽度。
[0036]压延机构700的第三具体实施方案如图7所示。借助挤出机或其它处理橡胶(未示出)的装置将橡胶向第一压延辊筒702和第二压延辊筒704的辊隙中给料,以形成帘布层的基底橡胶层706。修整刀具708用于修整掉过量的橡胶以形成基底橡胶层706的预期宽度。比如说,基底橡胶层可以修整成约3.7英寸宽的条带,具有约.030英寸的厚度。之后将基底橡胶层进给至组配辊筒710处。将进给进入机头410的帘线压入组配辊筒710之上的基底橡胶层中。将浸入基底橡胶层702中的帘线向组配辊筒712和辊筒714的辊隙中给料以使其与胶清涂层716紧密接合,其中装配组件形成帘布层720。任选二级压合机760可以用于消除任何残留的陷入空气。在帘布层由辊筒780拉出压延机构之前,修整刀具770修整帘布层720至预期宽度。
实施例1
[0037]轮胎组件200的横断面视图如图11所示。帘布层210设置在内衬112的径向外侧,并且具有与胎圈114b相邻设置的第一端部212。帘布层210从第一端部212向上延伸,上经胎侧104b,经过胎面102下方,向下经另一胎侧104a,并且向下延伸至另一胎圈114a。帘布层210的端部212、214没有包绕任一胎圈。胎侧帘布层220a、b的第二层在胎侧和胎肩区域中设置在第一帘布层210的径向外侧。第一胎侧帘布层220a具有位于内部胎面带束层108之下的第一端部222,并且沿胎侧104a向下延伸,包绕胎圈114a和三角胶116a,并且具有位于轮胎组件内部的反包端224。第二胎侧帘布层220b具有位于内部轮胎带束层108之下的第一端226,并且沿胎侧104b向下延伸,包绕胎圈114b和三角胶116b,并且具有位于轮胎组件内部的反包端228。这样帘布层220的第二层没有从轮胎胎冠下方延伸。每个帘布层210、220具有约为0.026的缩减厚度以及约为18epi的缩减帘线间距。当组配在一起时,整体测量厚度为约0.052英寸,具有为36epi的帘线间距。任一在之前段落中描述的帘布层构造将与轮胎构造共同作用。
[0038]尽管本发明结合某些实施例进行了描述,但显然在不脱离所附权利要求范围下进行的多种修改和变型也是可能的。
Claims (3)
1.一种制造用于轮胎的加强帘布层的方法,所述方法的特征在于,包括以下步骤:在第一和第二压延辊筒之间压延基底橡胶涂层,其中基底涂层具有在0.02~0.06英寸范围内的测量厚度,在组配辊筒和第四压延辊筒之间压延胶清橡胶层,其中胶清层具有处于0.003至0.007英寸范围内的厚度,挤压多个帘线至胶清橡胶层之上形成帘线层,并使基底橡胶涂层与帘线层配合以形成第一层;重复上述步骤以形成第二层;将所述第一层与所述第二层结合来形成帘布层。
2.根据权利要求1的方法,其特征在于帘线与基底层齐平。
3.根据权利要求1的方法,其特征在于帘线不与基底层齐平。
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FR2922143B1 (fr) * | 2007-10-11 | 2012-01-13 | Michelin Soc Tech | Installation et procede de gainage d'une nappe de fils |
TR201104076A1 (tr) * | 2011-04-26 | 2012-11-21 | Kordsa Global End�Str�Yel �Pl�K Ve Kord Bez� San. Ve T�C. A.�. | Araç lastiği üst kuşak şeridinin üretim yöntemi. |
CN104540663B (zh) * | 2012-07-31 | 2016-10-12 | 米其林集团总公司 | 用于弹性体混合物的压延驱动装置的自动启动和连续操作 |
JP5756451B2 (ja) * | 2012-12-11 | 2015-07-29 | 住友ゴム工業株式会社 | 空気入りタイヤ |
CN104476778B (zh) * | 2014-12-01 | 2017-02-22 | 浙江大学台州研究院 | 橡胶履带用钢丝帘布的制造装置及制造方法 |
JP6152867B2 (ja) | 2015-04-06 | 2017-06-28 | 横浜ゴム株式会社 | ゴム押出部材の製造方法及び製造装置 |
NL2016826B1 (en) * | 2016-05-25 | 2017-12-12 | Vmi Holland Bv | Extruder head for extruding cord-reinforced extrudate |
WO2019076618A1 (en) * | 2017-10-16 | 2019-04-25 | Compagnie Generale Des Etablissements Michelin | PRODUCTION OF A SEMI-FINISHED LAMINATE PRODUCT FOR USE IN THE PRODUCTION OF TIRES |
WO2019123200A1 (en) * | 2017-12-20 | 2019-06-27 | Bridgestone Europe Nv/Sa | Method for the production of a fabric for the manufacture of a ply of a pneumatic tyre and method for the construction of said pneumatic tyre |
WO2019198544A1 (ja) * | 2018-04-09 | 2019-10-17 | 住友ゴム工業株式会社 | ゴム被覆コード製造装置およびゴム被覆コード製造方法 |
US20210387395A1 (en) * | 2020-06-10 | 2021-12-16 | The Goodyear Tire & Rubber Company | Die for a polymer mixing machine and tire ply produced by same |
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-
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