Design of Injection Mould for Cup Body Shell with Improved Half Slides
Mechanical & Electrical Engineering Institute, Ningbo Poiytechnic, Ningbo 315800, China
Abstract：A two-plate injection mould with half slides was designed according to the structure characteristic of cup body shell plastic part of coffee machine. For the gating system of the mould, two inner side-gates were used for balanced gating and two spring block were used to push the runner waste for demoulding. In view of the difficulty in demoulding the outer wall of the plastic part, two improved half slide mechanisms and two first core-pulling mechanisms in fixed mould were used for demoulding of the outer wall. The complete demoulding of the plastic part was realized by pushing the moving mould plate. The opening actions of the mould were divided into four steps: the first step was used to drive two first core-pulling mechanisms in fixed mould, the second was used for core pulling of first core-pulling mechanisms on left and right half slide blocks, the third was used for side core pulling opening of half slide block, the fourth was used for ejection of moving mould plate for demoulding the plastic part completely. The improved design of half slider mechanism makes it has multi-directional core pulling function, avoids the complex design of core-pulling mechanism, and effectively simplifies the mould structure.
Keywords：half slide; injection mould; automatic demoulding; structure design; core-pulling mechanism
Lou Yonggou. Design of injection mould for cup body shell with improved half slides[J]. Engineering Plastics Application，2020，48(10)：93-99.