CN114701114A - 一种汽车真木饰件大小件一次性成型工艺及其成型模具 - Google Patents
一种汽车真木饰件大小件一次性成型工艺及其成型模具 Download PDFInfo
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Abstract
本发明公开了一种汽车真木饰件大小件一次性成型工艺及其成型模具,成型模具布置有两个成型腔,大成型腔连接多个带阀针的浇口、小成型腔连接一个带阀针的浇口,成型工艺包括:步骤一、将真木层粘附于成型模具上模;步骤二、合模;步骤三、大成型腔对应的多个浇口在阀针的顺序控制下依次开启,小成型腔的浇口与大成型腔的最后一个浇口联动开启,使大、小成型腔同时被填满;大、小成型腔被填满前,当总进料量达到大、小成型腔总体积的95%~98%时,对大、小成型腔进行保压;步骤四、冷却;步骤五、开模。本发明通过对进料时机与进料压力的把控实现了在一副模具上加工大小两件真木饰件,减少了一副模具的成本以及整个生命周期中一台注塑机的占用。
Description
技术领域
本发明涉及汽车饰件注塑技术领域,特别是一种汽车真木饰件大小件一次性成型工艺及其成型模具。
背景技术
真木类汽车饰件的受喜爱程度近些年是节节攀升的,但是为了节约成本,提升其耐用度,往往需要对真木饰件进行注塑加工,也即使真木饰材层与塑胶材料相结合,得到一种表层是真木材质,里层是塑胶材质的汽车饰件,在注塑过程中,首先需要将木皮放入模具内,以往真木饰件模具因为木皮无法承受过大的注塑压力,通常一副模具上都只会布置尺寸相近的零件,或相同的零件一出二,例如驾驶侧饰条或较小的副驾驶侧饰条,也即一台注塑机上生产的产品尺寸接近或相同,若有两个尺寸差异较大的零件,则需要开两副模具,由两台注塑机生产。
而当生产大件的真木装饰件时(普遍为长条形),例如较大的副驾驶侧饰条或左右门饰条,一副模具内由于无法放下两个饰条,一般采用一出一的模具,但这样模具内部空间的利用率是较低的,虽然剩余空间足够再布置一个小饰条成型腔,但由于生产工艺受限,小饰条仍然需要开另一副模具,由另一台较小的注塑机来完成生产。因此,现有的注塑模具和注塑工艺无法通过一副模具去生产尺寸差异巨大的汽车真木饰件,模具利用率和生产效率均较低。
发明内容
本发明的目的在于,提供一种汽车真木饰件大小件一次性成型工艺及其成型模具。本发明通过对进料时机与进料压力的把控实现在一副模具上加工大小差异巨大的两件真木饰件,减少了一副模具的成本以及整个生命周期中一台注塑机的占用。
为达到上述目的,本发明采用如下技术方案:
本发明的第一方面,提供一种汽车真木饰件大小件一次性成型工艺,
采用布置有一大一小两个成型腔的一副成型模具,且大成型腔连接多个带阀针的浇口、小成型腔连接一个带阀针的浇口,成型工艺按以下步骤进行:
步骤一、取一大一小预先打有孔位的真木饰材层,将真木饰材层的孔位对准浇口并将其粘附于成型模具的上模;
步骤二、成型模具合模;
步骤三、大成型腔对应的多个浇口在阀针的顺序控制下依次开启进料,小成型腔的浇口与大成型腔的最后一个浇口联动开启,通过对各个浇口开启时机的控制与进料压力的控制,最终使大成型腔与小成型腔同时被填满;大、小成型腔被填满前,当总进料量达到大成型腔与小成型腔总体积的95%~98%时,对大、小成型腔进行保压,直至大、小成型腔内剩余的空间同时被填满;
步骤四、冷却;
步骤五、成型模具开模,取出一大一小的两件真木饰件。
与现有技术相比,本发明成型工艺的有益效果体现在:基于大小两个成型腔,大成型腔顺序进料最后一个浇口的开启与小成型腔浇口的开启相关联,结合各浇口的开启时间与进料压力的调控最终使大、小成型腔同时被填满,当产品完全填满后,注塑压力将全部施加到真木饰材层及模具,同步填满有助于消除两个型腔的注塑压力差,使得真木饰材层不易被冲裂。
大成型腔顺序进料最后一个浇口的开启与小成型腔浇口的开启相关联,也即大成型腔最后一个浇口与小成型腔浇口可先后或同步开启,其中同步开启为最佳,由于注塑机螺杆处施加的液压压力不可能瞬变,两浇口同步打开时大成型腔的最后一个浇口处能分担部分小成型腔浇口打开带给小成型腔的冲击,小成型腔内的瞬时进料速度能够得到有效的缓解,从而可以防止进料瞬间冲裂小成型腔内的真木饰材层;同理,小成型腔内浇口的打开也是对大成型腔最后一个浇口附近的真木饰材层的一种保护,由于两个浇口同时打开,大成型腔最后一个浇口相对于前面的几个浇口,浇口处瞬时出料所带给真木饰材层的冲击更小,可有效防止真木饰材层冲裂。本发明的工艺从真木饰材层冲裂的多个因素着手,解决了一大一小两件真木饰件同时加工时真木饰材层容易冲裂的问题,最终可在一副模具的一次注塑后得到一大一小的两件真木饰件,减少了一副模具的成本以及整个生命周期中一台注塑机的占用。
作为一种技术方案的完善:
前述的汽车真木饰件大小件一次性成型工艺中,所述大成型腔与小成型腔在成型模具合模后为完全分离的两个空间,进料互不干扰,大成型腔与小成型腔的体积比为100:8。
前述的汽车真木饰件大小件一次性成型工艺中,所述步骤三中,小成型腔对应的浇口与大成型腔最后一个浇口同时开启。
前述的汽车真木饰件大小件一次性成型工艺中,所述步骤三中,大成型腔对应的多个浇口的开启满足:当上一浇口注入的填料完全覆盖下一浇口时,下一浇口方能开启;下一浇口开启时,上一浇口仍保持开启,该设定有助于消除熔接线。
该设定下小成型腔内浇口与大成型腔最后一个浇口同步开启的还有一点好处是:由于大成型腔最后一个浇口开启相对于前面的几个浇口的开启,浇口处瞬时出料所带给真木饰材层的冲击更小,因此,大成型腔最后一个浇口的打开时机也能得到提前,最早能提前至大成型腔的最后一个浇口刚被上一浇口输出的填料完全覆盖,能有效提升注塑的效率。
前述的汽车真木饰件大小件一次性成型工艺中,所述步骤三中,进料压力的控制满足:从开启大成型腔第二个浇口起,每开启一个浇口的瞬间,进料压力达到一个波峰值,且后打开浇口的波峰值大于前一浇口打开的波峰值,进料压力的最大波峰值不超过105Mpa,该数值以下的压力不易使真木饰材层冲裂。
前述的汽车真木饰件大小件一次性成型工艺中,所述大成型腔连有六个浇口,记为N1、N2、N3、N4、N5和N6,小成型腔连接的浇口记为N7;步骤三中先打开N1,填料填充至大、小成型腔总体积的20%时打开N2、填充至总体积的35%时打开N3、填充至总体积的65%时打开N4、填充至总体积的72%时打开N5、填充至总体积的85%时同时打开N6和N7,兼顾了注塑效率与对真木饰材层的保护。
作为另一种技术方案的完善:
前述的汽车真木饰件大小件一次性成型工艺中,所述大成型腔与小成型腔在成型模具合模后由一条支路相互连通。
前述的汽车真木饰件大小件一次性成型工艺中,所述步骤三中,大成型腔对应的最后一个浇口的开启时机满足使大成型腔与小成型腔内填料的熔接线位于所述支路上,这种方案相对于上一方案的难点在于大成型腔最后一个浇口的开启时机更难把控,得到的大小真木饰件需要进一步切开,而好处是真木饰材层的冲裂风险更小。
前述的汽车真木饰件大小件一次性成型工艺中,所述步骤五中,成型模具开模后,一大一小的两件真木饰件附着于成型模具的下模。
本发明的第二方面,提供一种成型模具,包括上模和下模,所述上模和下模在合模后内部形成有大成型腔和小成型腔,所述上模上设有若干连通大成型腔的第一浇口以及一个连通小成型腔的第二浇口,若干所述第一浇口和所述第二浇口均内置阀针。
与现有技术相比,本发明成型模具的有益效果体现在:模具内部的空间利用率高,利用该模具结合各个浇口进料的时机可以实现对大小差异巨大的两件真木饰件的加工,因此能省去一副模具的成本以及整个生命周期中一台注塑机的占用。
前述的成型模具中,所述大成型腔包括饰件功能区、第一饰件外观面区和第一饰件废料区,若干所述第一浇口设置在饰件功能区或第一饰件废料区的上方,所述下模上对应第一浇口的位置设有第一内凹,所述第一内凹底部设有上凸的第一支撑部。
前述的成型模具中,所述小成型腔包括第二饰件外观面区和第二饰件废料区,所述第二浇口设置在第二饰件废料区的上方,所述下模上对应第二浇口的位置设有第二内凹,所述第二内凹底部设有上凸的第二支撑部。
附图说明
图1是实施例1注塑模流分析过程中浇口N2打开时的注塑状态示意图;
图2是实施例1注塑模流分析过程中浇口N3打开时的注塑状态示意图;
图3是实施例1注塑模流分析过程中浇口N4打开时的注塑状态示意图;
图4是实施例1注塑模流分析过程中浇口N5打开时的注塑状态示意图;
图5是实施例1注塑模流分析过程中浇口N6、N7打开时的注塑状态示意图;
图6是实施例1注塑模流分析过程中保压时的注塑状态示意图;
图7是大、小腔成型腔内填充总体积与螺杆速度的关系变化图;
图8是注塑过程中注塑机螺杆处施加的压力随时间的变化图;
图9是注塑过程中锁模力随时间的变化图;
图10是本发明成型模具的主要部分结构示意图;
图11是下模的结构示意图;
图12是图10在A处的局部放大图;
图13是图10在B处的局部放大图。
附图标记:1-上模,2-下模,3-大成型腔,4-小成型腔,5-第一浇口,6-第二浇口,7-真木饰材层,31-饰件功能区,32-第一饰件外观面区,33-第一饰件废料区,34-第一内凹,35-第一支撑部,41-第二饰件外观面区,42-第二饰件废料区,43-第二内凹,44-第二支撑部。
具体实施方式
下面结合附图和实施例对本发明作进一步的说明,但并不作为对本发明限制的依据。
实施例1:一种汽车真木饰件大小件一次性成型工艺,本发明的工艺首先根据待加工大、小真木饰件的尺寸确定成型模具两个成型腔的大小,再根据成型模具两个成型腔的大小确定浇口的数量以及其布置的位置,最终设计出可以加工大、小两件真木饰件的成型模具。
本发明的工艺采用根据以上思路设计的布置有一大一小两个成型腔的一副成型模具,且大成型腔3连接多个带阀针的浇口、小成型腔4连接一个带阀针的浇口,在本实施例中,大成型腔3与小成型腔4的体积比为100:8,大成型腔3与小成型腔4在成型模具合模后为完全分离的两个空间,成型工艺按以下步骤进行,用以一次加工驾驶侧真木饰件(小)和副驾驶侧真木饰件(大),大的副驾驶侧真木饰件为长条形,最大长度与最大宽度的比值大于5:
步骤一、取一大一小预先打有孔位的真木饰材层7,该孔位根据模具上的浇口位置预打,将真木饰材层7的孔位对准浇口并将其粘附于成型模具的上模1。
步骤二、成型模具合模,合模后真木饰材层7下方与下模2形成了用于注塑的空间。
步骤三、大成型腔3对应的多个浇口在阀针的顺序控制下依次开启进料,且大成型腔3的最后一个浇口与小成型腔4的浇口同时开启,通过对各个浇口开启时机的控制与进料压力的控制,最终使大成型腔3与小成型腔4同时被填满。
大成型腔3连有六个浇口,浇口的分布可参考图10,浇口在下模上对应的位置可参考图11,记为N1、N2、N3、N4、N5和N6,小成型腔4连接的浇口记为N7,各个浇口按以下步骤开启(填充的填料温度在290℃以下):
步骤3.1、先打开浇口N1,填料逐渐填充,先覆盖浇口N2,填料继续填充至大、小成型腔总体积的20%时打开浇口N2保持N1开启,如图1所示,此图为N1打开0.6634s后的注塑状态示意图,此时注塑机螺杆行程35mm,总进料口压力为82.28Mpa,浇口N1处的压力为31.34Mpa,浇口N1周边压力在2.68Mpa-13.54Mpa之间分布,取决于该处填料还能否流动扩散;
步骤3.2、填料逐渐填充,先覆盖浇口N3,填料继续填充至大、小成型腔总体积的35%时打开浇口N3保持N1、N2开启,如图2所示,此图为N1打开0.9768s后的注塑状态示意图,此时注塑机螺杆行程38mm,总进料口压力为87.81Mpa,浇口N1处的压力为53.09Mpa,浇口N2处的压力为47.00Mpa,浇口N3处的压力为57.04Mpa,各浇口周边的压力值辐射式降低;
步骤3.3、填料逐渐填充,先覆盖浇口N4,填料继续填充至大、小成型腔总体积的65%时打开浇口N4保持N1、N2、N3开启,如图3所示,此图为N1打开1.514s后的注塑状态示意图,此时注塑机螺杆行程78mm,总进料口压力为92.94Mpa,浇口N1处的压力为69.69Mpa,浇口N2处的压力为67.24Mpa,浇口N3处的压力为58.11Mpa,浇口N4处的压力为38.46Mpa,各浇口周边的压力值辐射式降低;
步骤3.4、填料逐渐填充,先覆盖浇口N5,填料继续填充至大、小成型腔总体积的72%时打开浇口N5保持N1、N2、N3、N4开启,如图4所示,此图为N1打开1.634s后的注塑状态示意图,此时注塑机螺杆行程87mm,总进料口压力为95.08Mpa,浇口N1处的压力为73.56Mpa,浇口N2处的压力为70.93Mpa,浇口N3处的压力为61.80Mpa,浇口N4处的压力为60.67Mpa,浇口N5处的压力为75.23Mpa,各浇口周边的压力值辐射式降低;
步骤3.5、填料逐渐填充,先覆盖浇口N6,填料继续填充至大、小成型腔总体积的85%时同时打开浇口N6和N7保持N1、N2、N3、N4、N5开启,如图5所示,此图为N1打开1.890s后的注塑状态示意图,此时注塑机螺杆行程100mm,总进料口压力为99.24Mpa,浇口N1处的压力为79.37Mpa,浇口N2处的压力为78.91Mpa,浇口N3处的压力为73.96Mpa,浇口N4处的压力为73.62Mpa,浇口N5处的压力为62.44Mpa,浇口N6处的压力为72.61Mpa,各浇口周边的压力值辐射式降低。
步骤3.6、大、小成型腔被填满前,当总进料量达到大成型腔3与小成型腔4总体积的96%时,如图6所示,此图为N1打开2.067s后的注塑状态示意图,此时注塑机螺杆行程110mm,调小总进料口压力,总进料口压力为78.93Mpa,浇口N1处的压力为65.05Mpa,浇口N2处的压力为64.58Mpa,浇口N3处的压力为61.93Mpa,浇口N4处的压力为62.25Mpa,浇口N5处的压力为57.56Mpa,浇口N6处的压力为51.45Mpa,浇口N7处的压力为35.04Mpa,各浇口周边的压力值辐射式降低,对大、小成型腔进行保压,直至大、小成型腔内剩余的空间同时被填满,最终达到模内压力平衡。
步骤四、冷却。
步骤五、成型模具开模,一大一小的两件真木饰件附着于成型模具的下模2,用顶针顶出,得到一大一小的两件真木饰件。
如图7所示,图7为大、小腔成型腔内填充总体积与螺杆速度的关系变化图,螺杆的速度需要不断地变化以控制注塑机螺杆处施加的液压压力,因为产品截面积变化,为了达到较小的注塑填充压力且填料能在模具内尽量以匀速流动的目的,所以需要通过注塑机螺杆速度变化的控制来达到填料在模具内匀速流动的目的,图7为经过多次模流分析得到的在实际试制过程中通过控制注塑机螺杆速度,来尽量控制填料在模具内流速均匀的一种较佳的方案。
如图8所示,实际填充过程中模具内压力无法监控,只能监控注塑设备施加的压力,通过对注塑机螺杆处施加的液压压力的控制能反映模具内部的情况,本发明注塑机螺杆处施加的液压压力的控制满足:从开启大成型腔第二个浇口起,每开启一个浇口的瞬间,进料压力达到一个波峰值,且后打开浇口的波峰值大于前一浇口打开的波峰值,进料压力的最大波峰值不超过105Mpa,图7中出现的几个波峰对应N2、N3、N4、N5和N6的打开瞬间,由于N6打开瞬间N7同步打开,因此需要更大的注塑压力以维持填料在两个成型腔的均匀流动,N6打开时的注塑压力可作为注塑机螺杆处施加的最大的液压压力,图7中的时间、压力与图1至图6中的数据略有出入,这是由于整个成型周期时间较短,时间截取存在些许误差,图7中注塑机螺杆处施加的压力值不等同于图1至图6中总进料口的压力值,总进料口的压力值会略小于注塑机螺杆处施加的压力值。
图7显示注塑过程中注塑机螺杆处施加的液压压力最高在102.3Mpa左右,低于105Mpa,真木饰材层冲裂风险较小。
如图9所示,锁模力在注塑过程中逐步上升,随后保持一段时间较大的锁模力,该期间对应工艺中的冷却步骤,待饰件冷却后逐渐降低开模。
实施例2:一种汽车真木饰件大小件一次性成型工艺,本发明的工艺首先根据待加工大、小真木饰件的尺寸确定成型模具两个成型腔的大小,再根据成型模具两个成型腔的大小确定浇口的数量以及其布置的位置,最终设计出可以加工大、小两件真木饰件的成型模具。
本发明的工艺采用根据以上思路设计的布置有一大一小两个成型腔的一副成型模具,且大成型腔3连接多个带阀针的浇口、小成型腔4连接一个带阀针的浇口,在本实施例中,大成型腔3与小成型腔4的体积比为100:8,大成型腔3与小成型腔4在成型模具合模后由一条支路相互连通,成型工艺按以下步骤进行:
步骤一、取一大一小预先打有孔位的真木饰材层7,将真木饰材层7的孔位对准浇口并将其粘附于成型模具的上模1;
步骤二、成型模具合模;
步骤三、大成型腔3对应的多个浇口在阀针的顺序控制下依次开启进料,当大成型腔3对应的最后一个浇口开启时,同步开启小成型腔4对应的一个浇口进料,通过对各个浇口开启时机的控制与进料压力的控制,最终使大成型腔3与小成型腔4同时被填满,大成型腔3对应的多个浇口的开启满足:当上一浇口注入的填料完全覆盖下一浇口时,下一浇口方能开启,下一浇口开启时,上一浇口仍保持开启;
大成型腔3对应的最后一个浇口的打开时机满足使大成型腔3与小成型腔4内填料的熔接线位于支路上。
大、小成型腔被填满前,当总进料量达到大成型腔3与小成型腔4总体积的96%时,对大、小成型腔进行保压直至大、小成型腔内同时被填充满;
步骤四、冷却;
步骤五、成型模具开模,一大一小的两件真木饰件附着于成型模具的下模2,用顶针顶出,从两件真木饰件的连接处切开,得到一大一小的两件真木饰件。
实施例3:一种成型模具,用于注塑成型,主要结构如图10至13所示,包括上模1和下模2,上模1和下模2在合模后内部形成有大成型腔3和小成型腔4,当大成型腔3与小成型腔4的体积比大于55:45时即可视为大小差异较大的两个零件,本实施例中大成型腔3与小成型腔4的体积比为100:8,上模1上设有若干连通大成型腔3的第一浇口5以及一个连通小成型腔4的第二浇口6,若干第一浇口5和第二浇口6均内置阀针。
大成型腔3包括饰件功能区31、第一饰件外观面区32和第一饰件废料区33,若干第一浇口5设置在饰件功能区31或第一饰件废料区33的上方,下模2上对应第一浇口5的位置设有第一内凹34,第一内凹34底部设有上凸的第一支撑部35。
饰件功能区31为饰件上需要二次加工以安装中控、出风口的位置,因此可以用作浇口进料,第一饰件废料区33为需要切除的多余部位,因此也可以用作浇口进料,第一饰件外观面区32为光滑的外观面,不能用于浇口进料,第一内凹34用于第一浇口5进料的瞬时缓冲,第一支撑部35用于支撑真木饰材层。
小成型腔4包括第二饰件外观面区41和第二饰件废料区42,第二浇口6设置在第二饰件废料区42的上方,下模2上对应第二浇口6的位置设有第二内凹43,第二内凹43底部设有上凸的第二支撑部44。
第二饰件废料区42为需要切除的多余部位,因此可以用作浇口进料,第二饰件外观面区41为光滑的外观面,不能用于浇口进料,第二内凹43用于第二浇口6进料的瞬时缓冲,第二支撑部44用于支撑真木饰材层。
在本发明的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
以上仅是本发明的优选实施方式,本发明的保护范围并不仅仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (10)
1.一种汽车真木饰件大小件一次性成型工艺,其特征在于:采用布置有一大一小两个成型腔的一副成型模具,且大成型腔连接多个带阀针的浇口、小成型腔连接一个带阀针的浇口,成型工艺按以下步骤进行:
步骤一、取一大一小预先打有孔位的真木饰材层,将真木饰材层的孔位对准浇口并将其粘附于成型模具的上模;
步骤二、成型模具合模;
步骤三、大成型腔对应的多个浇口在阀针的顺序控制下依次开启进料,小成型腔的浇口与大成型腔的最后一个浇口联动开启,通过对各个浇口开启时机的控制与进料压力的控制,最终使大成型腔与小成型腔同时被填满;大、小成型腔被填满前,当总进料量达到大成型腔与小成型腔总体积的95%~98%时,对大、小成型腔进行保压,直至大、小成型腔内剩余的空间同时被填满;
步骤四、冷却;
步骤五、成型模具开模,取出一大一小的两件真木饰件。
2.根据权利要求1所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述大成型腔与小成型腔在成型模具合模后为完全分离的两个空间,大成型腔与小成型腔的体积比为100:8。
3.根据权利要求1所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述步骤三中,小成型腔对应的浇口与大成型腔最后一个浇口同时开启。
4.根据权利要求1、2或3所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述步骤三中,大成型腔对应的多个浇口的开启满足:当上一浇口注入的填料完全覆盖下一浇口时,下一浇口方能开启;下一浇口开启时,上一浇口仍保持开启。
5.根据权利要求1、2或3所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述步骤三中,进料压力的控制满足:从开启大成型腔第二个浇口起,每开启一个浇口的瞬间,进料压力达到一个波峰值,且后打开浇口的波峰值大于前一浇口打开的波峰值,进料压力的最大波峰值不超过105Mpa。
6.根据权利要求3所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述大成型腔连有六个浇口,记为N1、N2、N3、N4、N5和N6,小成型腔连接的浇口记为N7;步骤三中先打开N1,填料填充至大、小成型腔总体积的20%时打开N2、填充至总体积的35%时打开N3、填充至总体积的65%时打开N4、填充至总体积的72%时打开N5、填充至总体积的85%时同时打开N6和N7。
7.根据权利要求1所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述大成型腔与小成型腔在成型模具合模后由一条支路相互连通。
8.根据权利要求7所述的汽车真木饰件大小件一次性成型工艺,其特征在于:所述步骤三中,大成型腔对应的最后一个浇口的开启时机满足使大成型腔与小成型腔内填料的熔接线位于所述支路上。
9.一种成型模具,用于注塑成型,其特征在于:包括上模(1)和下模(2),所述上模(1)和下模(2)在合模后内部形成有大成型腔(3)和小成型腔(4),所述上模(1)上设有若干连通大成型腔(3)的第一浇口(5)以及一个连通小成型腔(4)的第二浇口(6),若干所述第一浇口(5)和所述第二浇口(6)均内置阀针。
10.根据权利要求9所述的成型模具,其特征在于:所述大成型腔(3)包括饰件功能区(31)、第一饰件外观面区(32)和第一饰件废料区(33),若干所述第一浇口(5)设置在饰件功能区(31)或第一饰件废料区(33)的上方,所述下模(2)上对应第一浇口(5)的位置设有第一内凹(34),所述第一内凹(34)底部设有上凸的第一支撑部(35);
所述小成型腔(4)包括第二饰件外观面区(41)和第二饰件废料区(42),所述第二浇口(6)设置在第二饰件废料区(42)的上方,所述下模(2)上对应第二浇口(6)的位置设有第二内凹(43),所述第二内凹(43)底部设有上凸的第二支撑部(44)。
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JP2005053074A (ja) * | 2003-08-04 | 2005-03-03 | Gifu Plast Ind Co Ltd | バルブゲート式射出成形方法 |
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JP2005053074A (ja) * | 2003-08-04 | 2005-03-03 | Gifu Plast Ind Co Ltd | バルブゲート式射出成形方法 |
CN101746026A (zh) * | 2008-12-22 | 2010-06-23 | 重庆工商大学 | 一种针阀式顺序热流道注射成型方法 |
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