汽车中控壳注塑模及其五次六元复合斜滑块设计

Design of injection mould with five-times six-element composite angle-slider mechanism for the automotive central control shell

汽车中控壳塑件注塑模具设计中,因塑件正面和背面都需要采用斜向脱模方式脱模,特别是背面的特征组成中,特征多且构成复杂,因此为该区域特征的脱模创新设计了一种五次六元复合斜滑块机构在局部区域实施抽芯脱模,并构建了该机构的力学运动模型。该复合斜滑块机构的结构设计为:利用油缸驱动1个主体斜滑块实施主抽芯,主体斜滑块的上端设置了一个先抽芯斜滑块即上斜滑块,上斜滑块先抽芯时驱动3个斜顶、4根弹簧顶针和1个C4侧型芯镶件;主体斜滑块的下端还设置了一个先抽芯斜滑块即斜型芯,该斜型芯也先于主体斜滑块抽芯;在上斜滑块完成先抽芯后,主体斜滑块的驱动油缸先驱动斜型芯抽芯,而后再驱动主体斜滑块及其上其余5种脱模元件一起完成抽芯。为实现塑件的自动化生产,在此复合斜滑块机构设计基础上,塑件的模具结构设计成热流道两板式两次开模模具,模具中还设计了1个正面油缸斜抽芯机构和4个斜导柱滑块机构,较好地实现了塑件的自动化生产。

In the design of the plastic injection mould for the automotive central control shell plastic parts,both the front and the back require angle demoulding,especially in the composition of the back features,where are numerous and complex.Therefore,a five-time 6-element composite angle-slider mechanism was innovatively designed for demoulding the features in this area to implement core pulling demoulding in local areas,and a mechanical motion model of the mechanism was constructed.In the design of the composite angle-slider mechanism,its structural design was as follows:A main angle-slider was driven by a hydraulic cylinder to implement the main core pulling.The upper end of the main angle-slider was equipped with a first core pulling angle-slider-the upper angle-slider.When the upper angle-slider first pulled the core,it drove three lifters,four spring ejectors,and one C4 side-coreinsert.The lower end of the main angle-slider was also equipped with a pre-core-pulling angle-slider-an angle-core,which was also pre-core-pulling before the main angle-slider.After the upper angle-slider completed the core pulling,the driving oil cylinder of the main angle-slider first drove the angle-slider core pulling,and then drove the main angle-slider and its other 5 demoulding components to complete the core pulling together.In order to achieve automated production of plastic parts,based on the design of the composite angle-slider mechanism,the mould structure of the plastic parts was designed as a hot runner two-plate-mould with double opening.In the mould,one front oil cylinder angle core pulling mechanism and four angle-guide-pin slider mechanisms were also designed,which effectively realized the automated production of plastic parts.