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《工程塑料应用》 2019年第09期
DOI:10.3969/j.issn.1001-3539.2019.09.017
内壁六面包围框形塑料件脱模机构及模具设计
陈黎明1,熊建武2,沈忠良3
1.湖南财经工业职业技术学院,湖南衡阳 421002; 2.湖南工业职业技术学院,长沙 410208; 3.浙江工商职业技术学院工程学院,浙江宁波 315012 
Design of Compound Core-pulling Mechanism and Injection Mold for Six-bread Frame-Shaped Parts with Inner Wall
Chen Liming1, Xiong Jianwu2, Shen Zhongliang3
1. Hunan Financial & Industrial Vocational Technical College, Hengyang 421002, China; 2. Hunan Industry Polytechnic, Changsha 410208, China; 3. School of Engineering, Zhejiang Business Technology Institute, Ningbo 315012, China 
摘要:针对塑料件内壁六面包围内壁脱模困难的特点,设计了其一模一腔点浇口三板模注塑模具。模具中,针对内、外壁脱模困难问题,设计了3个油缸驱动的滑块侧抽芯机构来实施外壁的脱模;设计了1个7滑块6次抽芯复合机构来实施内壁脱模,机构采用分层抽芯的办法,先在塑料件内壁的底部,利用油缸驱动1个中央滑块先抽芯,再让出底部2个侧面抽芯滑块的运动空间后,由驱动条带动2个侧面抽芯滑块进行侧抽芯,在侧抽芯完成后,由油缸再带动一起移出,为后续4个滑块的抽芯让出空间;底部抽芯完成后,再通过另一油缸驱动的1个主体驱动块进行侧向移动,先驱动其上的2个中央部位滑块下移抽芯,为后续的2个内壁侧抽芯滑块让出运动空间,而后,主体驱动块再驱动2个侧壁滑块进行内收侧抽芯来实现塑料件内壁的完全脱模。模具结构布局合理,脱模机构设置巧妙,特别是内壁脱模机构的设计,有较好的机构设计创新性。 
Abstract:In view of the difficulty of demoulding the inner wall of six parts of the inner wall of the plastic part, a mold with one cavity and three points for gate was designed. In the mould, aiming at the difficulty of demoulding the inner and outer walls, three cylinder-driven slider side core-pulling mechanisms were designed to demould the outer walls; a compound mechanism with seven sliders and six core-pulling mechanisms were designed to demould the inner walls. The mechanism adopted the method of layered core-pulling. First, at the bottom of the inner wall of the plastic parts, a central slider was driven by the cylinder to core-pull first, and then two side sliders were released from the bottom. After the movement space, two side core-pulling sliders were driven by the driving strip for side core-pulling. After the side core-pulling was completed, the oil cylinder drived them out together to make room for the core-pulling of the following four sliders. After the bottom core-pulling was completed, one main driving block driven by another oil cylinder was moved laterally, and two central sliders on the top were driven down to pull core for the following two inner parts. The wall side core-pulling slider given up the motion space, and then the main driving block driven two side wall sliders to pull the core in the side to realize the complete demoulding of the inner wall of the plastic part. The layout of die structure was reasonable, and the setting of demoulding mechanism was ingenious. Especially the design of inner wall demoulding mechanism was innovative and worth learning. 
关键词:内壁;多面包围;多级抽芯;抽芯机构;机构设计;结构设计 
Keywords:inner wall; multi-bread circumference; multi-stage core-pulling; core-pulling mechanism; mechanism design; structural design 
本文引用格式:
陈黎明,熊建武,沈忠良.内壁六面包围框形塑料件脱模机构及模具设计[J].工程塑料应用,2019,47(9):87-93.
Chen Liming,Xiong Jianwu,Shen Zhongliang. Design of compound core-pulling mechanism and injection mold for six-bread frame-shaped parts with inner wall[J]. Engineering Plastics Application,2019,47(9):87-93. 

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