The present invention provides an injection mould, including static and dynamic, the dynamic model in the static model, which is characterized in that the static mold is arranged on the surface of rectangular cross section sealing convex platform, the sealing convex platform inside the surrounding area into the mold cavity, the static model of the injection hole is arranged in the center of the upper and lower surface, whose upper surface is provided with a rectangular groove section for sealing, the sealing convex platform and the sealing groove coincide, the sealing groove around the area under internal cavity, the lower cavity of the upper surface of the edge is provided with a plurality of suction holes, the the suction hole and is positioned in the vacuum cavity is communicated with the internal dynamic, the outer wall of the vacuum chamber in the dynamic model of the opening, the opening is connected with the outside of the vacuum tube. There are sealing and vacuum pipes installed inside the mold cavity. The vacuum tube is connected with the vacuum tube by the external vacuum pump to evacuate the gas in the mold cavity, so that the die can be pressed tightly to prevent the formation of stomata and improve the quality of finished products.
【技术实现步骤摘要】
一种注塑模具
本专利技术涉及一种注塑模具。
技术介绍
注塑模具广泛的应用于塑料产品加工行业。注塑模具一般适应于热塑性塑料加热成型。利用热塑性塑料的热熔原理,将熔融的塑料通过注塑机将其注射进模具的型腔内,然后冷却定型,打开模具取出塑料产品。现有的注塑模具在合模之后,往往会因为模具内的气压过高,致使还成品有气孔或者表面不均匀。
技术实现思路
本专利技术目的是提供一种注塑模具,可以解决模具合模后,内压过高造成气孔或表面不均匀的现象。专利技术的技术方案是一种注塑模具,包括静模和动模,所述动模位于所述静模之下,其特征在于:所述静模下表面装有截面为矩形的密封凸台,所述密封凸台的内部环绕区域为上模腔,所述静模的中心设有上下表面贯通的注塑孔,其上表面设有截面为矩形的密封凹槽,所述密封凸台与所述密封凹槽相吻合,所述密封凹槽内部环绕区域为下模腔,所述下模腔的上表面边部开有若干抽气孔,所述抽气孔与位于所述动模内部的真空腔相通,所述真空腔在所述动模的外壁有开口,所述开口外侧连接有真空管。进一步,所述密封凸台的凸出高度大于所述密封凹槽的凹陷深度0.5~1mm。进一步,所述密封凸台的横截面宽度与 ...
【技术保护点】
一种注塑模具,包括静模和动模,所述动模位于所述静模之下,其特征在于:所述静模下表面装有截面为矩形的密封凸台,所述密封凸台的内部环绕区域为上模腔,所述静模的中心设有上下表面贯通的注塑孔,其上表面设有截面为矩形的密封凹槽,所述密封凸台与所述密封凹槽相吻合,所述密封凹槽内部环绕区域为下模腔,所述下模腔的上表面边部开有若干抽气孔,所述抽气孔与位于所述动模内部的真空腔相通,所述真空腔在所述动模的外壁有开口,所述开口外侧连接有真空管。
【技术特征摘要】
1.一种注塑模具,包括静模和动模,所述动模位于所述静模之下,其特征在于:所述静模下表面装有截面为矩形的密封凸台,所述密封凸台的内部环绕区域为上模腔,所述静模的中心设有上下表面贯通的注塑孔,其上表面设有截面为矩形的密封凹槽,所述密封凸台与所述密封凹槽相吻合,所述密封凹槽内部环绕区域为下模腔,所述下模腔的上表面边部开有若干抽气孔,所述抽气孔与位于所述动模内部的真空腔相通,所述真空腔在所述动模的外壁有开口,所述开口外侧连接有真空管。2.根据权利要求1所述...
【专利技术属性】
技术研发人员:李颖,冯贺著,
申请(专利权)人:天津永炬模具有限公司,
类型:发明
国别省市:天津,12
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。