CN103476572B - 用于生产具有纤维强化支撑件和功能部件的模制部件的方法和设备 - Google Patents
用于生产具有纤维强化支撑件和功能部件的模制部件的方法和设备 Download PDFInfo
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- CN103476572B CN103476572B CN201280012634.8A CN201280012634A CN103476572B CN 103476572 B CN103476572 B CN 103476572B CN 201280012634 A CN201280012634 A CN 201280012634A CN 103476572 B CN103476572 B CN 103476572B
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- 238000000034 methods Methods 0.000 claims description 15
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- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 4
- 239000007943 implant Substances 0.000 claims description 3
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Classifications
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Abstract
Description
技术领域
[0001]本发明涉及一种用于生产具有纤维强化支撑件和至少一个装接部件的模制部件的设备和方法,该至少一个装接部件连接到该纤维强化支撑件并且包括塑性材料,其中,模制部件特别适于用作或进一步开发作为车辆内部的装饰部件。
背景技术
[0002]装饰部件,例如门的内部面板、门的中央跨距(center span)以及中央操控台的侧翼等的支撑件至今是通过注塑成型方法或通过按压热塑性或热固性天然纤维垫系统生产。与功能元件(例如加强肋,装接部件等)的连接通常通过塑性材料部件的粘合或焊接来实现。最终,利用装饰品覆盖这些支撑件。进一步的生产方法是从后面进行的装饰部件的直接注塑。
[0003]在被压缩的支撑件的情况下,通常利用不同的工序和不同的工具执行压缩支撑垫和注塑功能元件以及将功能元件连接到被压缩的支撑件的工序。
[0004] DE 10 2004 054 228 Al公开了一种用于生产模制部件的方法和设备,其中,在第一步骤中,加热含有天然纤维的坯料,然后,通过压缩两个模制元件而用该坯料生产模制部件,然后,通过注塑塑性材料熔化物在模制部件上模制功能部件,其中,在注塑所述塑性材料熔化物之前,在模制部件中形成空腔。这些步骤在一个设备中执行。在DE 692 22 130 T2中公开了类似的方法和类似的设备。
[0005]在这两种情况下,所述功能元件或塑性材料部件被注塑(inject)到所述天然纤维垫上。被按压的垫和功能部件的改进的一体化要求进一步的工作步骤和进一步的设备。
发明内容
[0006]本发明的目的在于改进包括塑性材料的装接部件和被压缩的纤维强化支撑件的一体化,从而以优化的生产工艺来生产模制部件。
[0007]为实现该目的,本发明提供一种用于生产具有纤维强化支撑件和至少一个装接部的模制部件的设备,该至少一个装接部连接到该纤维强化支撑件上并且包括塑性材料,其中,该设备具有:
[0008]至少两个工具构件,至少第一工具构件能够相对于第二工具构件移动;并且,以这样方式,该设备能够打开以使纤维强化垫插入,并且该设备能够闭合以对所述垫施加压力并且压缩该垫,从而生产所述纤维强化支撑件,其中
[0009]至少第二工具构件具有至少一个用于供给液化的塑性材料的喷嘴,并且第一工具构件具有至少一个用于形成所述装接部的空腔,使得能够通过将所述塑性材料经过喷嘴并且经过垫弓I入到所述空腔内并且在其中凝固而生产并且一体化所述装接部。
[0010]为实现该目的,本发明还提供一种用于生产具有纤维强化支撑件和至少一个装接部的模制部件的方法,该至少一个装接部连接到所述纤维强化支撑件上并且包括塑性材料,该方法包括如下步骤:
[0011] a)将纤维强化垫插入处于打开状态的第一和第二工具构件之间,其中,第二工具构件具有至少一个用于供给液化的塑性材料的喷嘴,并且第一工具构件具有至少一个用于形成所述装接部的空腔;
[0012] b)闭合所述第一和第二工具构件,使得所述垫被施加压力并且被压缩,以生产所述纤维强化支撑件;以及
[0013] c)通过将塑性材料经过所述喷嘴并且经过所述垫引入到所述空腔内并且在其中凝固,生产并且一体化所述装接部。
[0014]根据本发明的工具结合了按压和注塑工具的性能。装饰部件支撑件,例如车门的内饰面板的支撑件的生产都在一个车间里实现,该装饰部件支撑件具有作为基础支撑件的热塑性或热固性纤维强化垫和设置在后侧的诸如功能元件、加强元件等的装接部件。
[0015]根据本发明,用于生产具有纤维强化支撑件和至少一个装接部件(该至少一个装接部件连接到该纤维强化支撑件,并且包括塑性材料)的模制部件的设备具有至少两个工具构件,该至少两个工具构件能够相对于彼此移动,或者其中至少一个工具构件能够相对于另一个工具构件移动。所述工具构件能够设计为两个工件,该两个工件能够通过相对的位移而打开和闭合。在所述工具构件的打开状态中,能够插入纤维强化垫,而在所述被压制为两个工件的工具构件闭合时,给予该垫以三维轮廓,且利用压力来压缩并固化该垫。为此,所述垫优选地是热塑性或热固性天然纤维垫。在所述两个工具构件中的一个中,设置了至少一个喷嘴,液化的塑性材料能够以如下的方式经过该喷嘴被施加到所述插入的垫上:所述优选高温和加压的熔化物穿过所述压缩的或尚未压缩的垫,并且在相反侧上到达空腔;该空腔形成在另一个工件中。该空腔与例如加强肋或紧固部的功能元件的形状对应,或一般地与装接部件的形状对应。通过所述优选的可控制的喷嘴,能够调整熔化量和压力。与压缩支撑件并接着安装或引入功能部件相比,减少了工具和生产车间的数量并且因此降低了生产成本。与具有功能元件的注塑模制支撑件相比,减轻了重量。
[0016]根据本发明的工具在另一方面也得到简化,因为所述用于供给塑性材料的一个或多个喷嘴以及所述用于成型和凝固功能元件的一个或多个空腔不必位于一个工件中。以这种方式,很复杂的功能元件也能够毫无困难地并利用更不复杂的工件来形成。由于穿透注塑(through inject1n)的塑性材料与优选仍然高温的垫的聚合物结合,功能元件与支撑件的紧固或一体化明显得到了改进。此外,在所述垫的穿透注塑区域的整个厚度上形成机械连接(某类型的机械挂钩连接),这也改进一体化。在装饰侧的表面上,不形成凸缘、不平坦等。通过受控的穿透注塑塑性材料,在周围区域中所述纤维垫能够被清空,用于可能发的生随后的覆盖工序。
[0017]优选地,在工具外或通过在工具中的一体化了的加热设备,对所述垫进行预热,优选地达到100 0C和300 °C之间的温度,特别地,180 °C和220 °C之间的温度。以这种方式,简化了三维轮廓的成型以及必要时与用于穿透注塑的塑性材料的连接。所述被加热的垫位于或固定于打开的工具构件之间。通过张紧框架、夹具或销等能够实现该固定。
[0018]优选地将一个工具构件设置为固定的,而另一个工具构件可移动。在这种情况下,所述可移动的工具构件优选地具有一个或多个空腔而没有喷嘴,并且所述另一个固定的工具构件具有一个或多个喷嘴而没有空腔。通过所述固定的工具构件能够更容易地完成所述塑性材料的提供和供给,同时,在所述可移动侧上,装接部件的排出是有利的。
[0019]所述设备优选地具有至少一个切割缘(cutting edge),在该切割缘上进行轮廓的修剪或孔的修剪。所述切割缘能够这样构成:在该切割缘上,例如在工具构件被按压在一起时,直接进行切割,或者,所述切割缘能够这样构成:在该切割缘处,纤维垫上形成切割轮廓,用于随后对支撑件的修剪。
[0020]所述至少一个喷嘴优选地是具有针型阀的热流道喷嘴,通过压力使塑性材料经过该流道喷嘴而施加到所述垫上。在使用针型阀的情况下,在注塑之后,喷嘴开口利用针而闭合。例如,所述针可以是尖针、圆锥形或圆筒形。注塑残余被按压到塑性材料部件内,使得装接部件的表面通过针系统实现干净的“闭合”和无凹陷的形状。此外,能够通过单独的可控制的针型阀来调整熔化量和熔化压力。
[0021]优选地,所述喷嘴的针刺穿到垫内,从而使得穿透注塑更容易。
[0022]除了在后侧上的装接部件之外,也可以使用额外的注塑点将元件或覆盖物安装到装饰侧。为此,每个所述工具构件都优选地各自具有至少一个喷嘴以及至少一个空腔。在一个特定实施例中,装接部件形成在后侧上,并且塑性材料的装饰层形成在前侧上。在这种情况下,两个工具构件中的每一个都各自具有至少一个喷嘴,其中,后侧上设有适于形成裝接部的空腔,而在前侧上没有空腔或者设置了适于形成装饰层的一个浅的空腔。这能够为例如在所述垫的正面作为装饰层的塑性材料提供有纹理的表面结构。
[0023]为了使塑性材料的穿过更容易,所述垫可以穿孔或者制备有开口和/或沟槽。
[0024]在一个特定实施例中,所述两个工具构件中的一个作为中间工具构件,布置在另一个工具构件与第三工具构件之间。所述中间工具构件具有两侧,每一侧都各自具有至少一个空腔和/或至少一个喷嘴。优选地,该中间工具构件与两个其它工具构件这样同时协作,即两个垫能够同时被压缩并且装备装接部件。
[0025]在优选实施例中,所述中间工具构件设置为固定的和/或可移动的。所述两个其它工具构件这样构成,即两者都能够移动,或者所述两个工具构件中的一个固定而所述两个工具构件中的另一个能够移动。
[0026]所述中间工具构件优选地形成为可移动转向单元。该转向单元能够相对于所述两个其它工具构件旋转。
[0027]当设置有中间工具构件时,能够利用该设备执行一步或两步的方法。在所述一步方法的情况下,优选地,根据上面描述的方法,在中间工具构件的两侧同时地形成模制部件,而无所述第三工具构件。因此,设备的产量加倍。在这种情况下,所述中间工具构件能够既能够构成为固定和/或可移动工具构件,也可以构成为转向单元的形式,从而例如使要在一个工具中压缩的一个或两个垫更容易插入。
[0028]在所述两步方法的情况下,在所述设备的其中一侧上进行垫的压缩和第一装接部件或第一组装接部件的一体化。为此,所述工具闭合并且类似于上述描述地执行该方法。然后,打开所述工具,并且使转向单元(中间产品紧固到该转向单元上)旋转,使得该中间产品被供给到第三工件。所述工具再一次闭合,从而安装或从后面注塑装饰层和/或从而使下一组裝接部件与所述垫在注塑模制过程中一体化。通过这样向所述设备供应垫,即在所述设备的每次闭合过程中,两个模制空腔都设置有垫,虽然该方法具有两个步骤,也能够避免生产周期的延长。
[0029]所述三个工具构件一起形成用于垫的压缩和装接部件的一体化的两个单元。优选地,以可移动的方式设置至少所述中间工具构件和两个工具构件的一个,其中,两个外部工具构件以及外部可移动工具构件优选地各自具有喷嘴。在优选实施例中,所述中间工具构件在两侧上各自至少设置有一个空腔而无喷嘴,而另一个工具构件具有至少一个喷嘴而无空腔。
[0030]优选地,在工具闭合终止和垫的压缩之后,经过短时间的等待,再执行塑性材料的注塑(即,装接部件的生产和一体化)。以这种方式,能够控制实现装接部件一体化应有的凝固程度。
[0031 ]塑性材料优选地包括聚合物,优选PP、ABS、PC/ABS ;特别地,所述聚合物中可以添加填充物和/或强化材料,如PP T20 O。
[0032] 所述垫优选地是具有天然纤维、玻璃纤维、矿物纤维、合成纤维、纤维素纤维和/或碳素纤维的热塑性或热固性纤维系统。
附图说明
[0033]图1A示意性地示出处于打开状态的用于生产模制部件的设备,该设备具有两个工具构件。
[0034]图1B示出处于闭合状态的图1A的设备。
[0035]图2A示出处于打开插入状态的用于生产模制部件的设备,该设备具有三个工具构件。
[0036]图2B示出处于闭合状态的图2A的设备。
[0037]图3示出处于打开状态的用于生产模制部件的设备,该设备具有三个工具构件。
[0038]图4示出用于生产模制部件的另一设备,该设备具有三个工具构件。
具体实施方式
[0039]图1A示出可移动工具构件10和固定工具构件20。这两个工具构件形成为具有压纹表面11和21的模制元件,并且具有这样的形状:该形状使得在压缩所述压纹表面11和21时,插入在所述压纹表面11和21之间的纤维垫30成为预期的支撑元件的形状。图1A示出了打开状态,在该打开状态中,插入纤维垫30。
[0040]固定工具构件20具有带有针型阀22的热流道喷嘴,该热流道喷嘴适于利用压力来将熔化的热塑性材料施加到仍未压缩或已经压缩的垫30。如果施加到仍未压缩的垫30,则该工具具有至少一个进一步的中间状态,在该中间状态中,所述工具闭合但是垫的压缩尚未发生或仅部分地发生。
[0041]当所述设备处于闭合状态时,空腔12与喷嘴22相对,使得在所述喷嘴22的阀的针打开之后,高温加压的熔化物穿过压缩垫30或至少部分压缩的垫30,并且到达对置的空腔
12。以这种方式,在所述垫30的被指定为后侧的一侧上形成装接部。在这种情况下,空腔12的中空空间对应于装接部的形状。可以在可替换或可移动的工具元件13中设置所述空腔12,使得能够通过工具的简单修改,能够生产不同的装接部,和不同的装饰元件支撑件或装饰元件。
[0042]图1A和IB各自仅示出了一个喷嘴22和一个空腔12。当然,可以设置多个喷嘴和多个空腔。在这种情况下,并不限制图1A和IB中所示的空腔12和喷嘴22布置在可移动工具工件10或固定工具工件20上。通过在两侧的每一侧上各自设置空腔和在两侧的每一侧上各自设置喷嘴,能够在所述纤维垫的两侧上设置装接部或塑性材料装饰层。在这种情况下,可以在所述垫的前侧形成具有从后侧注塑的塑性材料的或从前侧施加的塑性材料的装饰层。
[0043] 在第一制造工序中,将所述垫30布置在所述工具构件10和20之间,并且可以将垫30紧固到两个工具工件10和20中的一个。可以预先或通过一体化在所述工具构件10、20中的一个或两个中的加热设备来提高所述垫30的温度。然后,所述工具构件10、20压合并且压缩垫30,如图1B所示。
[0044]通过压缩使所述垫30定形,并且确定要形成的支撑件的三维轮廓。在所述压缩垫30已经冷却之后,获得尺寸稳定的支撑件。此外,当所述两个工具构件压合时,切割/折叠缘23作用在所述垫30上,使得在这一工序期间,已经能够执行轮廓修剪或孔修剪。
[0045]在模制过程期间或在模制过程终止之后,在该工具闭合的情况下,塑性材料熔化物经由喷嘴22引入,穿过纤维垫30,并且填充仍然空着的空腔12。为了促进塑性材料熔化物的穿过,可以事先对纤维垫30穿孔,或以其它方式打孔或使其能够被透过。
[0046]例如,为了缩短穿过路径或创建透过垫30的孔,可以将喷嘴22的针刺入到垫30内。
[0047]在注塑的塑性材料穿过热塑性或热固性纤维垫系统时,由于在生产过程期间,二者都是仍然粘性的、可连接的状态,所以不仅在尺寸稳定的支撑件后面基于凝固的装接部的机械钩吊作用(mechanical hooking)产生了牢固的连接,而且基于各个塑性材料的连接产生了牢固的连接。在产品冷却之后,装接部和纤维强化支撑件之间实现了优异的一体化。
[0048]当然,可以执行诸如例如按尺寸切割、最终成型、覆盖等进一步的加工步骤。
[0049]在根据图2A和2B的另一个实施例中,工件20布置为具有用于按压和注塑的两个工具侧25的转向单元26。两个工具侧25各自具有可以设置为相同或不同的压纹表面21和21’。压纹表面21和21’与工具构件10的压纹表面11以及第三工具构件40的压纹表面41协作。转向单元26能够相对于工具构件1和40旋转。
[0050]利用该模具的一种布置,能够执行一步方法和两步方法。
[0051]所述一步方法与已经描述的生产方法相同,其中,所述设备允许两个模制部件的同时生产。转向单元26的转向能力简化了垫的插入。在已经插入两个垫且设备处于在图2A中所示的状态之后,转向单元顺时针旋转90度。现在,工具侧25的压纹表面21和21’与工具工件10和40的相应压纹表面11和41相对。通过压合,在两侧上都实现压缩,如图2B所示,从而形成纤维强化支撑件。同时,或者在压缩之后,或是在等待短时间之后,塑性材料经过喷嘴22和42被注塑到转向单元26的工具侧25上的相应的空腔12和12’内。在经过冷却时间之后,工具打开,并且转向单元顺时针旋转90度或逆时针向回旋转90度,接着可以移除所生产的两个模制部件。
[0052]在所述两步方法中,首先在与图2A中示出的状态类似的插入状态下,垫30 ’插入或夹在转向单元26的一侧上,而在另一侧上,已经被压缩并且设置有装接部的垫30靠着转向单元26的压纹表面21放置。在接下来的工序中,转向单元26如图3所示地旋转,使得新插入的垫30’在工具的闭合期间与第三工具构件40协作,而第二垫30在工具的闭合期间与第一工具构件50协作。以与图1B中示出的方法类似地压缩新插入的垫30’,并且至少一个装接部件注塑在该新插入的垫30’上。已经压缩的垫30覆盖有装饰层60,优选地,装饰薄膜。为此,第一工具构件50的压纹表面51以合适的方式与转向单元26协作。
[0053]以这种方式,垫经过两个成型阶段和/或两个一体化阶段。将压缩和一体化的工序分配到在设备的两侧上进行是可能的。在这种情况下,工具构件50或50以及两个工件25中的一个可以没有空腔和/或喷嘴。
[0054]剩余的工序(装接部件的压缩和一体化)与上面涉及图1A和IB的描述类似。
[0055]在图4中示出了具有转向单元的实施例的改进,其中,通过同时插入垫和压缩垫而缩短了工作周期。为此,转向单元26具有“立方体结构”,在该立方体结构中,可移动转向单元26具有设有压纹表面21、21’、21”、21” ’的四个工具侧25。在可能的可替换工具元件13、13 ’、13”和13” ’中,工具侧25各自分配有空腔12、12 ’、12”、12” ’。这些空腔以上述方式与两个工具构件1和40的喷嘴22和42协作。
[0056]如上所述的设备的立方体结构能够进一步改进:除了工具构件10和40之外,设置另外两个工具构件,使得在四个侧面上,或更通用地,在立方体的任意数量的侧面上,能够同时地执行压缩和一体化。
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DE102004054228A1 (de) * | 2004-11-10 | 2006-06-08 | Volkswagen Ag | Verfahren und Vorrichtung zur Herstellung eines Verbundteils |
DE102007036660A1 (de) * | 2007-08-03 | 2009-02-05 | Kraussmaffei Technologies Gmbh | Verfahren und Vorrichtung zur Herstellung eines verstärkten Composite-Produktes |
CN201530092U (zh) * | 2009-07-27 | 2010-07-21 | 康佳集团股份有限公司 | 一种注塑模具装置 |
Also Published As
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CN103476572A (zh) | 2013-12-25 |
US20140084509A1 (en) | 2014-03-27 |
DE102011005350A1 (de) | 2012-09-13 |
WO2012120146A1 (de) | 2012-09-13 |
EP2683543A1 (de) | 2014-01-15 |
EP2683543B1 (de) | 2020-10-28 |
US9321202B2 (en) | 2016-04-26 |
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