The invention relates to the technical field of steam tool processing, and discloses an automobile injection mould with an external cooling system, which comprises an upper mould and a lower mould. The upper mould is concave, the lower mould is punch, the upper mould and the lower mould are clamped together to form a closed forming cavity. The upper mould is provided with an injection channel and an air channel, and the outer part of the upper mould is provided with an annular pipe, an injection channel and an air channel connected with the air channel. The bottom of the lower die is connected with the forming cavity, and the cooling cavity is filled with coolant. An exhaust pipe is connected with the forming cavity, and a one-way valve is installed in the exhaust pipe. The exhaust pipe is located at the outlet of the cooling cavity and a condensation pipe is installed. After cooling liquid, the condensation pipe is exported to an annular pipe outside the lower die. The annular pipe is provided with pressure. The output end of the pump and the pressure pump is connected with the airway. The invention can rapidly cool the plastic melt in the forming cavity and improve the forming efficiency of the mould.
【技术实现步骤摘要】
一种带有外冷却系统的汽车注塑模具
本专利技术涉及模具加工
,具体涉及一种带有外冷却系统的汽车注塑模具。
技术介绍
注塑是一种工业产品生产造型的方法。产品通常使用橡胶注塑或塑料注塑。注塑还可以分注塑成型模压法和压铸法。汽车绝大多数零部件都是通过注塑成型模压法,一般会使用注射成型机即注射机和注塑机,注塑机将热塑性塑料或热固性塑料利用塑料成型模具制成各种形状的塑料汽车零部件,因此汽车零部件注塑是通过注塑机和注塑模具实现的。现有技术中注塑模具包括凹模和下模,凹模为凹模,下模为凸模,凹模和下模卡合时,凹模和下模之间构成一个封闭的成型腔,向成型腔内注入塑料熔体,等待塑料熔体在成型腔内自然冷却成型,就能够制造出特定形状的汽车零部件,但塑料熔体自然散热的时间过长,影响零部件成型的效率,同时还会长时间占用注塑模具。为了加快塑料熔体冷却成型,传统的方式是从注塑模具外部浇冷水,通过冷水来对模具散热,通过模具来对塑料熔体散热。这种散热方式是从外部散热,塑料熔体的热传递速度较慢,会降低塑料熔体成型的效率,同时还会浪费大量的水,造成制造成本提高。为了解决上述问题申请号为201711482442.4的专利技术专利,包括上模和下模,上模为凹模,下模为凸模,上模和下模卡合时上模与下模之间构成一个封闭的成型腔,所述凹模上设有注塑道和与气道,注塑道与成型腔连通,所述气道外周设有环形腔,气道上设有与环形腔连通的出气口,出气口靠近气道的一端倾斜向下且朝向气道内,气道的一侧设有可与环形腔连通的高压气腔,高压气腔与气道之间设有与凹模滑动连接的滑块,滑块上设有连接口,连接口可连通环形腔与高压气腔, ...
【技术保护点】
1.一种带有外冷却系统的汽车注塑模具,包括上模具和下模具,上模具为凹模,下模具为凸模,其特征在于,上模具和下模具卡合构成一封闭的成形腔,所述上模具中设有注塑道和气道,上模具外部设有与气道连通的环形管道,注塑道和气道分别与成形腔连通,所述下模具的底部设有冷却腔,冷却腔中填充有冷却液,冷却腔与成形腔之间连接有排气管,排气管中安装有单向阀,排气管位于冷却腔的出口安装有冷凝管,冷凝管经过冷却液后导出到位于下模具外部的环形管道中,所述环形管道中设有加压泵,加压泵的输出端与气道相连通。
【技术特征摘要】
1.一种带有外冷却系统的汽车注塑模具,包括上模具和下模具,上模具为凹模,下模具为凸模,其特征在于,上模具和下模具卡合构成一封闭的成形腔,所述上模具中设有注塑道和气道,上模具外部设有与气道连通的环形管道,注塑道和气道分别与成形腔连通,所述下模具的底部设有冷却腔,冷却腔中填充有冷却液,冷却腔与成形腔之间连接有排气管,排气管中安装有单向阀,排气管位于冷却腔的出口安装有冷凝管,冷凝管经过冷却液后导出到位于下模具外部的环形管道中,所述环形管道中设有加压泵,加压泵的输出端与气道相连通。2.根据权利要求1所述的带有外冷却系统的汽车注塑模具,其特征在于,所述单向阀为电磁阀。3.根据权利要求1所述的带有外冷却系统的汽车注塑模具,其特征在于,所述气道位于成形腔的端口处设有喷头,喷头...
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