【摘要】 为保证艺术提篮灯罩塑料件艺术曲面外观的成型质量,针对艺术提篮灯罩外壁上特征需要异向抽芯脱模,设计了一模一腔三板注塑模具。模腔采用单点点浇口进行浇注,以保证流动路径上塑料件冷却时的收缩一致性,防止塑料件的冷却收缩变形差异。模具分三次分型打开,一次顶出脱模。设计了一种复合式哈夫滑块抽芯脱模机构来实现塑料件外观面的完整脱模,在脱模机构中,先通过三板模的前2次分型打开,来驱动插杆机构对哈夫滑块内的二次成型件进行先抽芯脱模,而后再通过模具的第3次分型打开来驱动斜导柱对两个哈夫滑块进行侧抽芯脱模,解决了同区域内两个抽芯方向异向的成型件的无干涉顺序抽芯,保证了塑料件的外观成型质量,脱模机构设计新颖,模具结构设计简单、可靠。更多还原

【Abstract】 In order to ensure the appearance quality of art basket lampshade plastic part,aimed at the need of different-directions core pulling on the outer wall of art basket lampshade,a three-plate injection mold with one cavity was designed. The single point gate was used to gate the cavity to ensure the consistency of the shrinkage of the plastic part during cooling in the flow path and to prevent the difference of the cooling shrinkage deformation of the plastic part. The mold can be opened by 3 times,and be ejected by 1 time. A compound half slider core-pulling mechanism was designed to realize the complete demoulding of the plastic part’s appearance surface. In the demoulding mechanism,the first two parting openings of the three-plate mold were used to drive the plunger mechanism to pull out the core and demount the second forming parts in the half slider,and then the third parting opening of the mold was used to drive the inclined guide pillar to pull the side core and demount the two half sliders. The mechanism solves the problem that the non-interference sequential core-pulling of two parts with different core-pulling directions in the same area and ensures the appearance quality of the plastic part. The structure design of the demoulding mechanism is novel,and the structure design of the mold is simple and reliable.更多还原