外侧整圈倒扣产品多向顺序抽芯注射模具  

Injection Mold with Multi Direction and Sequential Core Pulling for the Whole Circle of Gradient-section

作　　者：熊毅[1,2] 冯啸霖 XIONG Yi;FENG Xiao-lin(School of Mechanical Engineering of Henan Polytechnic Institute,Nanyang 473009 China;Henan Material Forming Equipment Intelligent Technology Engineering Research Center,Nanyang 473009,China)

机构地区：[1]河南工业职业技术学院机械工程学院,河南南阳473009 [2]河南省材料成形装备智能技术工程研究中心,河南南阳473009

出　　处：《塑料工业》2021年第8期81-86,共6页China Plastics Industry

基　　金：2021年河南省科技攻关计划项目(212102210372)。

摘　　要：针对防雾器罩壳外侧整圈倒扣截面不一致的问题,将其分解为5个典型倒扣特征F 1-F 5,其中,将产品右侧扭曲面等效为倒扣F 3,消除了成形区域归属的歧义。对产品进行了分型,设计了5个侧型芯滑块,并分析了滑块的抽芯参数。针对各滑块脱模方向差异大、一次抽芯困难等难题,确定了3次顺序抽芯的运动方案。采用2个斜导柱机构完成第一次抽芯、2个斜滑块机构完成第二次抽芯、1个斜顶完成第三次抽芯,分别由开闭器控制模具分型面Ⅰ、Ⅱ依次打开而实现。分型面Ⅱ打开时,用复位杆+挡圈的结构使推出机构和型芯保持相对静止,延迟了斜顶的提前运动。最后,完善了模具的浇注系统、冷却水道和推出机构,设计了1模4腔的热流道注射模具。In order to solve the problem of inconsistent cross-section of the outer ring undercut of the demister,it was decomposed into five typical features F 1-F 5,in which the twisted surface on the right side of the product was equivalent to the inverted F 3 to eliminate the ambiguity of forming area.Five side core sliders were designed,and the core pulling parameters of the sliders were analyzed.Aiming at the problems of big difference in demoulding direction of each slider and difficulty in core pulling at one time,the motion scheme of three times sequential core pulling was determined.The first core pulling was completed by two slant guide post mechanisms,the second by two slant slider mechanisms,and the third by one slant top.The parting surfaces I and II of the die were opened successively by the shutter.When parting surface II was opened,the push out mechanism and core were kept relatively static by the structure of reset rod and retaining ring,which delayed the advance movement of inclined top.Finally,the gating system,cooling system and pushing mechanism of the mold were improved,and the hot runner injection mold with 1 mold and 4 cavity was designed.

关 键 词：防雾器罩壳 倒扣 等斜度 滑块 斜顶 二次开模 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]