CN115027077A - 高压罐制造装置及高压罐制造方法 - Google Patents
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Abstract
本发明提供高压罐制造装置及高压罐制造方法。高压罐制造装置具备:模具,具有配置中间体的模腔,该中间体在内衬上卷绕有纤维束;及销部,以能够相对于所述模具移动的方式配置,并在接触位置与分离位置之间移动,该接触位置是所述销部从所述模腔的表面向所述模腔内突出而与配置于所述模腔的中间体接触的位置,该分离位置是所述销部与配置于所述模腔的中间体分离的位置,所述销部配置为,在所述接触位置,流入到所述模腔的熔融树脂能够在所述模腔的所述表面与所述中间体之间越过所述销部地流动。
Description
技术领域
本说明书公开高压罐制造装置及高压罐制造方法。
背景技术
在日本特开2019-142118中公开了高压罐的制造方法。在该制造方法中,通过使以包围模具的树脂注入口的方式设置的滑动芯从模具的模腔面向中间体的方向移动,使滑动芯与纤维束抵接,从树脂注入口注入树脂而使其含浸于纤维束。通过在树脂注入时使滑动芯与中间体的表面抵接,使树脂的流动强制性地朝向纤维束的内层侧,使树脂含浸至纤维束的内层部。
高压罐的形状由搭载高压罐的区域决定。高压罐的中间体是在内衬上卷绕纤维束而制作的。中间体的形状与高压罐的形状相匹配地形成。例如,在高压罐为细长的形状的情况下,中间体也以细长的形状形成。根据中间体的形状,有时在含浸树脂前发生变形,中间体在大范围内与模腔的表面接触。
在中间体的表面中的与模腔的表面接触的区域中,熔融树脂不流入到中间体与模腔之间。其结果,熔融树脂不与中间体的表面接触,熔融树脂无法从中间体的表面含浸。其结果,可能在纤维束产生未充分含浸树脂的部位。
发明内容
在本说明书中,提供一种抑制中间体与模腔的表面接触的技术。
在本说明书中,公开一种高压罐制造装置。高压罐制造装置具备:模具,具有配置中间体的模腔,该中间体在内衬上卷绕有纤维束;及销部,以能够相对于所述模具移动的方式配置,并在接触位置与分离位置之间移动,该接触位置是该销部从所述模腔的表面向所述模腔内突出而与配置于所述模腔的中间体接触的位置,该分离位置是该销部与配置于所述模腔的中间体分离的位置,所述销部配置为,在所述接触位置,流入到所述模腔的熔融树脂能够在所述模腔的所述表面与所述中间体之间越过所述销部地流动。
另外,在本说明书中,公开一种高压罐的制造方法。该制造方法包括:配置工序,在上述的高压罐制造装置的模腔配置中间体,且将销部配置于接触位置,该中间体在内衬上卷绕有纤维束;填充工序,向所述模腔注入熔融树脂,使所述熔融树脂在所述模腔的所述表面与所述中间体之间越过所述销部地流动,从而向所述模腔内填充所述熔融树脂;含浸工序,使所述模腔内的所述树脂含浸于所述纤维束;及移动工序,使所述销部从接触位置移动到分离位置。
发明效果
根据上述的结构,在模腔内,通过销部与中间体接触,能够抑制中间体与模腔表面接触。熔融树脂能够越过销部而在模腔表面与中间体之间流动,因此能够抑制熔融树脂的流动被销部阻碍。另外,通过使销部从接触位置移动到分离位置,能够使熔融树脂也与和销部接触的部分的中间体的表面接触。
附图说明
下面参照附图描述本发明的示例性实施例的特征、优点和技术和工业意义,在附图中相同的附图标记表示相同的元件。
图1是实施例的高压罐制造装置的纵剖视图。
图2是实施例的高压罐的纵剖视图。
图3是表示在实施例的模腔流动的树脂的流动的示意图。
图4是表示实施例的高压罐的制造方法的流程图。
图5是实施例的销部位于分离位置的状态的高压罐制造装置的纵剖视图。
具体实施方式
下面列出本说明书公开的高压罐制造装置的技术要素。此外,以下的各技术要素分别独立而有用。
所述销部也可以具备多个销,所述多个销从所述模腔的所述表面向同一方向突出且相互分离地配置。
根据该结构,通过向同一方向突出的多个销在多个位置与中间体接触,能够支承中间体。由此,能够抑制中间体与模腔表面接触。
也可以是,所述中间体具备:在所述中间体的长度方向上延伸的筒状的中央部分;及在所述中央部分的两端分别朝前端逐渐变细的前端部分,所述销部与所述中央部分接触。
由于中间体的前端部分具有逐渐变细的形状,因此难以变形。另一方面,中间体的中央部分具有筒状,容易变形。通过销部与中央部分接触,能够使销部与更容易变形的中央部分接触。
也可以是,在高压罐的制造方法的所述移动工序中,在所述树脂在所述模腔内固化之前,使所述销部从所述接触位置移动到所述分离位置。
根据该结构,能够使未固化的熔融树脂流入到通过销部从接触位置移动到分离位置而形成的空间。由此,能够使树脂也与中间体的表面中的与销部接触的部分接触。由此,能够在中间体的整个区域使树脂从中间体的表面含浸于纤维束。
(实施例)
如图1所示,本实施例的高压罐制造装置10在制造高压罐100(参照图2)时使用。
(高压罐的结构)
首先,参照图2对高压罐100进行说明。高压罐100搭载在燃料电池汽车上,贮藏天然气、氢气等燃料气体。高压罐100具备内衬102、含浸有树脂的纤维束104及环状部件106。内衬102由阻气性的树脂材料制作。内衬102在中央部分102a具有圆筒形状。内衬102的前端部分102b随着从中央部分102a分离并朝内衬102的端部而逐渐变细。
在内衬102的外侧表面配置有纤维束104。纤维束104通过在内衬102的外侧表面卷绕碳纤维而形成。纤维束104在内衬102的全长范围配置。纤维束104通过编织法卷绕有碳纤维。
纤维束104在高压罐100的两端由内衬102和环状部件106夹持而保持。高压罐制造装置10用于使树脂含浸于在内衬102卷绕有纤维束104且由环状部件106保持纤维束104的中间体200的纤维束104。因此,高压罐制造装置10也能够称为含浸装置10。此外,在变形例中,高压罐100的用途不限于贮存燃料电池汽车的燃料气体的罐,也可以是具有与上述同样的结构并贮存高压的气体的罐。
(高压罐制造装置的结构)
如图1所示,具备模具11、销部20。模具11具备上模12和下模14。若上模12与下模14闭合,则在模具11内形成模腔40。在模腔40配置中间体200。模腔40具有比中间体200的外形稍大的空间。因此,在中间体200配置于模腔40的状态下,在模腔40与中间体200之间形成供熔融树脂流动的程度的小的间隙。此外,在图1及图5中,优先观察容易度,较大地描绘了模腔40与中间体200的间隙。
在上模12安装有销部20。销部20具备多个销22、支承板24、致动器26。多个销22分别具有圆柱形状。多个销22在上模12中配置于从模腔40的表面向上方延伸的配置孔42内。此外,在图1及图5中,销22与配置孔42的间隙被较大地描绘,但在销22与配置孔42之间,设置有熔融树脂不流入的程度的间隙。
多个销22在上模12中在中间体200的长度方向(即图1的左右方向)上相互具有间隔地排列。多个销22相互平行地配置。多个销22在上端安装于支承板24。支承板24配置为能够通过致动器26相对于上模12在上下方向上移动。致动器26可以是液压缸,也可以是气缸、伺服电动机等。通过利用致动器26使支承板24在上下方向上移动,多个销22配置为能够在图1所示的与中间体200接触的接触位置与图5所示的从中间体200分离的分离位置之间沿上下方向移动。在多个销22配置于分离位置的状态下,多个销22的下端面位于与模腔40的表面相同的面上。
在下模14安装有销部30。销部30具备多个销32、支承板34、致动器36。多个销32分别具有与多个销22相同的结构。多个销32在下模14中配置于从模腔40的表面向下方延伸的配置孔44内。销32和配置孔44的关系与销22和配置孔42的关系相同。
多个销32在下端安装有与支承板24同样的支承板34。支承板34配置为能够通过与致动器26同样的致动器36而相对于下模14在上下方向上移动。由此,多个销32配置为,通过利用致动器36使支承板34在上下方向上移动,从而能够在与图1所示的中间体200接触的接触位置与图5所示的从中间体200分离的分离位置之间沿上下方向移动。在多个销32配置于分离位置的状态下,多个销32的下端面位于与模腔40的表面相同的面上。
如图3所示,在下模14具备对中间体200的两端进行支承的支承部16、18。支承部16、18支承中间体200的环状部件106。由此,中间体200在模具11内被支承。另外,在下模14配置有用于向模腔40填充树脂的多个流路46。多个流路46具有将从模具11外向模具11内注入的熔融树脂向模腔40内引导的槽形状。
(高压罐的制造方法)
接着,对高压罐100的制造方法进行说明。在高压罐100中,首先,将纤维束104配置于内衬102并利用环状部件106进行保持,由此制作中间体200。中间体200具有由内衬102的中央部分102a形成的中央部分200a和由内衬102的前端部分102b形成的前端部分200b。中央部分200a具有圆筒形状。前端部分200b从中央部分200a分离而朝向中间体200的前端逐渐变细。
接着,执行使树脂含浸于纤维束104的树脂含浸处理。在树脂含浸处理中,如图1所示,在安装有设备300(例如冲压装置)的模具11,向配置有中间体200的模腔40注入树脂,进行加压,由此执行使树脂含浸于纤维束104的所谓的RTM(Resin Transfer Molding(树脂传递模塑)的简称)成形。
如图4所示,在树脂含浸处理中,首先,使模具11的上模12与下模14分离,在下模14的模腔40的形状部分配置中间体200,利用支承部16、18固定中间体200(S12)。接着,闭合上模12和下模14。在将中间体200配置于模具11的工序中,多个销22、32在配置中间体200之前,配置于接触位置。此外,在变形例中,多个销22、32也可以在中间体200配置于模具11时配置于分离位置,在中间体200配置于模具11后移动到接触位置。多个销22、32配置在与中间体200De中央部分200a接触的位置,另一方面,不配置在与前端部分200b对应的位置。
接着,向模腔40内注入熔融树脂(S14)。注入的树脂例如是环氧树脂。在向模腔40内填充树脂时,将模腔40内的树脂升压至预定压力(S16)。接着,当模腔40内的树脂升压至预定压力时,以预定压力保持预定期间(S18)。由此,使树脂含浸于纤维束104。
当树脂被保压而含浸进行时,树脂逐渐固化。在S20中,在树脂完全固化之前,使多个销22、32从接触位置移动到分离位置。其结果,固化前的树脂通过多个销22、32移动而流入到形成的空间。由此,从多个销22、32接触的位置也能够使树脂含浸。
接着,在树脂固化后(S20),使上模12和下模14分离,将已成形的高压罐100从模具11取出(S22),结束树脂含浸处理。
(效果)
中间体200有时因树脂制的内衬102变形地成形而以相对于设计值变形的状态制作。在中间体200配置于模具11的阶段,中间体200被支承部16、18支承。在中间体200未变形的情况下,在模腔40的表面与中间体200之间形成若干的间隙,以使熔融树脂流入。但是,由于实际上中间体200变形,因此在两端被支承部16、18支承的状态下,中间体200的中央部分200a会弯曲。此外,为了避免中间体200与模腔40的表面的接触,若增大中间体200与模腔40的表面的间隙,则含浸所需的树脂量增加。
在高压罐制造装置10中,配置有向模腔40突出的销部20、30。根据该结构,通过销部20、30,能够以弯曲的中间体200不与模腔40的表面接触的方式进行支承。由此,维持中间体200与模腔40的表面的间隙。其结果,如图3所示,从流路46流入到模腔40内的熔融树脂在中间体200与模腔40之间流动,遍及中间体200的表面的整体。
多个销22、32从流路46分离地配置。另外,多个销22、32在模腔40内相互分离地配置。因此,在中间体200与模腔40之间流动的熔融树脂不会被多个销22、32遮挡,能够越过多个销22、32而流动。由此,能够避免由多个销22、32阻碍熔融树脂的流动的情况。此外,在变形例中,将熔融树脂注入到模腔40内的流路不限于流路46。例如,流路也可以在上模12中配置于模腔40的上方。另外,流路的数量没有限制。无论是哪种流路,销部20、30都不具有妨碍在模腔40内流动的熔融树脂的流动那样的配置及形状。
另外,多个销22朝向同一方向(即,下方向)从模腔40的表面突出。根据该结构,能够利用多个销22抑制中间体200的变形。由此,能够抑制中间体200向多个销22突出的方向弯曲而与模腔40的表面接触的情况。多个销32也是同样的。
多个销22、32在熔融树脂固化之前从接触位置移动到分离位置,由此从多个销22、32接触的位置也能够使树脂含浸。由此,能够抑制产生树脂未被适当地含浸的部分。
多个销22、32配置于中间体200的中央部分200a,另一方面,未配置于中间体200的前端部分200b。在内衬102,在圆筒形状的中央部分102a容易产生变形,另一方面,在具有逐渐缩径的形状的前端部分102b,难以产生变形。在高压罐制造装置10中,以与中央部分200a接触的方式配置多个销22、32,另一方面,不配置与前端部分102b接触的销。由此,通过在有效的位置配置销22、32,能够抑制销的个数。
此外,多个销22、32不限于圆柱形状。例如,多个销22、32中的与中间体200接触的部分可以具有弯曲面例如局部的球面形状。通过减小销22、32与中间体200的接触面积,能够避免因销22、32而妨碍熔融树脂与中间体200的接触。其结果,例如,能够不使多个销22、32移动到分离位置,而使树脂适当地含浸。
另一方面,也可以使多个销22、32的形状为与中间体200的接触面积变大的形状。例如,也可以将多个销22、32的形状形成为沿着中间体200的表面形状的形状。通过增大销22、32与中间体200的接触面积,能够降低中间体200的表面、即纤维束104从销22、32受到的接触压力。由此,能够抑制纤维束104由于与销22、32的接触压力而凹陷的情况。
多个销22、32的形状也可以不相同。例如,也可以在中间体200的变形量大的部位配置为了降低接触压力而接触面积大的形状的销,另一方面,在中间体200的变形量小的部位配置接触面积小的形状的销。在该情况下,接触面积小的销也可以相对于模具11固定。
以上,对本发明的实施方式详细地进行了说明,但这些只是例示,并不限定请求保护的范围。在请求保护的范围所记载的技术中,包含对以上例示的具体例进行各种变形、变更的技术。
另外,本说明书或附图中说明的技术要素通过单独或各种组合来发挥技术上的有用性,并不限定于申请时请求保护的范围所记载的组合。另外,本说明书或附图中例示的技术同时达成多个目的,达成其中一个目的本身就具有技术上的有用性。
Claims (5)
1.一种高压罐制造装置,具备:
模具,具有配置中间体的模腔,所述中间体在内衬上卷绕有纤维束;及
销部,以能够相对于所述模具移动的方式配置,并在接触位置与分离位置之间移动,所述接触位置是所述销部从所述模腔的表面向所述模腔内突出而与配置于所述模腔的所述中间体接触的位置,所述分离位置是所述销部与配置于所述模腔的所述中间体分离的位置,
所述销部配置为,在所述接触位置,流入到所述模腔的熔融树脂能够在所述模腔的所述表面与所述中间体之间越过所述销部地流动。
2.根据权利要求1所述的高压罐制造装置,其中,
所述销部具备多个销,所述多个销从所述模腔的所述表面向同一方向突出且相互分离地配置。
3.根据权利要求1或2所述的高压罐制造装置,其中,
所述中间体具备:在所述中间体的长度方向上延伸的筒状的中央部分;及在所述中央部分的两端分别朝前端逐渐变细的前端部分,
所述销部与所述中央部分接触。
4.一种高压罐制造方法,包括:
配置工序,在权利要求1至3中任一项所述的高压罐制造装置的模腔配置中间体,且将销部配置于接触位置,所述中间体在内衬上卷绕有纤维束;
填充工序,向所述模腔注入所述熔融树脂,使所述熔融树脂在所述模腔的所述表面与所述中间体之间越过所述销部地流动,从而向所述模腔内填充所述熔融树脂;
含浸工序,使所述模腔内的所述熔融树脂含浸于所述纤维束;及
移动工序,使所述销部从接触位置移动到分离位置。
5.根据权利要求4所述的高压罐制造方法,其中,
在所述移动工序中,在所述熔融树脂在所述模腔内固化之前,使所述销部从所述接触位置移动到所述分离位置。
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US5236656A (en) * | 1990-09-29 | 1993-08-17 | Keeper Co., Ltd. | Method of injection blow molding synthetic resin bellows product |
ES2222730T3 (es) * | 1998-09-11 | 2005-02-01 | Essef Corporation | Metodo para la fabricacion de recipientes compuestos a presion y productos fabricados con el metodo. |
CN104943081A (zh) * | 2014-03-27 | 2015-09-30 | 双叶电子工业株式会社 | 注射成型用模具 |
CN105216219A (zh) * | 2015-06-30 | 2016-01-06 | 北京市塑料研究所 | 一种全包覆塑料制品的一次注塑成型方法 |
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US5236656A (en) * | 1990-09-29 | 1993-08-17 | Keeper Co., Ltd. | Method of injection blow molding synthetic resin bellows product |
ES2222730T3 (es) * | 1998-09-11 | 2005-02-01 | Essef Corporation | Metodo para la fabricacion de recipientes compuestos a presion y productos fabricados con el metodo. |
CN104943081A (zh) * | 2014-03-27 | 2015-09-30 | 双叶电子工业株式会社 | 注射成型用模具 |
CN105216219A (zh) * | 2015-06-30 | 2016-01-06 | 北京市塑料研究所 | 一种全包覆塑料制品的一次注塑成型方法 |
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