The utility model discloses an ejection mechanism for injection moulds, which comprises a lower die base, a lower die core arranged in the lower die base, a pair of corresponding and connected ejection through holes between the lower die base and the lower die core, an ejection through hole with an ejection rod, at least two vertical grooves evenly arranged on the side wall of the ejection rod, an ejection counterbalance block arranged in the vertical groove, and the bottom end of the ejection counterbalance block is connected. The pin shaft is connected to the bottom wall of the vertical groove, and a spring is arranged between the middle part of the top pressing block and the middle part of the vertical groove, a concave cavity is arranged at the top of the top rod, a pressure block is arranged in the concave cavity, a wedge-shaped insert plate is fixed at the bottom side of the pressing block, and a buffer spring is fixed between the bottom surface of the pressing block and the bottom wall of the concave cavity. The structure of the utility model is reasonable, which is not only convenient to operate, but also conducive to improving the ejection efficiency, good stability in use, strong applicability and good practicability.
【技术实现步骤摘要】
注塑模具用顶出机构
本技术属于注塑模具
,具体涉及一种注塑模具用顶出机构。
技术介绍
注塑模具是生产塑胶制品的工具,其将受热融化的材料由高压射入模腔内,经过冷却固化后,得到成型品,由于现有技术的多数注塑制品的结构十分复杂,在实际开模过程中,为了便于将注塑制品顶出,需要借助各种顶出结构,然而这些顶出结构多数是柱杆,采用点顶二度,其接触面积较为有限且为直接将成品直接顶出,这样容易造成产品损伤,降低了成品率,故而适用性和实用性受到限制。
技术实现思路
本技术的目的是提供一种结构设置合理且适用性强的注塑模具用顶出机构。实现本技术目的的技术方案是一种注塑模具用顶出机构,包括下模座,设置在所述下模座内的下模芯,在所述下模座与所述下模芯之间设置有一一对应且相连通的顶出通孔,在所述顶出通孔内设置有顶杆,在所述顶杆的侧壁上均匀设置有至少两个竖槽,在所述竖槽内设置有顶压抵块,所述顶压抵块的底端通过销轴连接在所述竖槽的底壁且在所述顶压抵块的中部与所述竖槽的中部之间设置有弹簧,在所述顶杆的顶部设置有凹腔,在所述凹腔内设置有压块,在所述压块的底面侧边均固定有楔形插板,在所述压块的底面与所 ...
【技术保护点】
1.一种注塑模具用顶出机构,包括下模座,设置在所述下模座内的下模芯,在所述下模座与所述下模芯之间设置有一一对应且相连通的顶出通孔,在所述顶出通孔内设置有顶杆,其特征在于:在所述顶杆的侧壁上均匀设置有至少两个竖槽,在所述竖槽内设置有顶压抵块,所述顶压抵块的底端通过销轴连接在所述竖槽的底壁且在所述顶压抵块的中部与所述竖槽的中部之间设置有弹簧,在所述顶杆的顶部设置有凹腔,在所述凹腔内设置有压块,在所述压块的底面侧边均固定有楔形插板,在所述压块的底面与所述凹腔的底壁之间固定有缓冲弹簧,所述压块在下移时,所述楔形插板插卡在所述顶压抵块与竖槽的内壁之间使顶压抵块向外展开。
【技术特征摘要】
1.一种注塑模具用顶出机构,包括下模座,设置在所述下模座内的下模芯,在所述下模座与所述下模芯之间设置有一一对应且相连通的顶出通孔,在所述顶出通孔内设置有顶杆,其特征在于:在所述顶杆的侧壁上均匀设置有至少两个竖槽,在所述竖槽内设置有顶压抵块,所述顶压抵块的底端通过销轴连接在所述竖槽的底壁且在所述顶压抵块的中部与所述竖槽的中部之间设置有弹簧,在所述顶杆的顶部设置有凹腔,在所述凹腔内设置有压块,在所述压块的底面侧边均固定有楔形插板,在所述压块的底面与所述凹腔的底壁之间固定有缓冲弹簧,所...
【专利技术属性】
技术研发人员:陈彦,王建,杨建林,田耕,王志琼,
申请(专利权)人:重庆莱拓包装有限公司,
类型:新型
国别省市:重庆,50
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