1.重庆工商学校，重庆 402289； 2.西南大学工程技术学院，重庆 400715
Design of Injection Mold with Compound Slider Mechanism on Carrier for Small Gap Shell
Yi Zuquan1, Fu Lin1, Kou Jin1, Pan Xinxin2
1. Chongqing Industrial and Commercial School, Chongqing 402289, China; 2. College of Engineering and Technology, Southwest University, Chongqing 400715, China
Abstract：Aimed at the forming of plastic parts of small gap charger shell, a kind of injection mold with two-plates and two times opening cold-hot-runner mold without ejection was designed. In the mold, single cavity layout was adopted, using hot runner and moving cold gate gating system and air blowing demoulding were adopted to ensure the molding quality of the plastic part surface. The demoulding of the plastic parts was divided into outer wall demoulding and inner wall demoulding, a kind of half slide block mechanism with spring ejecting was used to realize the demoulding of four side outer walls, a composite core pulling mechanism was used to demould the inner wall of the plastic part. A step-by-step core pulling demoulding method was adopted in the mechanism. One main bearing slider mechanism carried and driven five auxiliary mechanisms to demould the inner wall of plastic parts and the waste materials step by step. Among the five auxiliary mechanisms, there were three slide core pulling sub-mechanisms, one sliding block moving sub-mechanism and one waste ejection sub-mechanism. The mechanism design and structure is novel, which solves the injection molding production problem of small gap plastic parts.
Keywords：small gap shell; compound mechanism; inner wall demoulding; cold-hot-runner; injection mold
Yi Zuquan，Fu Lin，Kou Jin，et al. Design of injection mold with compound slider mechanism on carrier for small gap shell[J]. Engineering Plastics Application，2021，49(2)：110-116.