车门拉钩底座盖热流道注塑模及模内热切机构结构设计

doi:10.19491/j.issn.1001-9278.2020.09.016

中国塑料 ›› 2020, Vol. 34 ›› Issue (9): 90-95.DOI: 10.19491/j.issn.1001-9278.2020.09.016

车门拉钩底座盖热流道注塑模及模内热切机构结构设计

刘少华¹, 熊建武²(), 徐文庆¹, 胡智清¹, 陈黎明¹, 汪哲能¹

^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

收稿日期:2020-03-13 出版日期:2020-09-26 发布日期:2020-09-25

Structure Design of Hot Runner Injection Mold and Hot Cutting Mechanism in Mold for Door Hook Base Cover

LIU Shaohua¹, XIONG Jianwu²(), XU Wenqing¹, HU Zhiqing¹, CHEN Liming¹, WANG Zheneng¹

^1.Hunan Financial & Industrial Vocational Technical College, Hengyang 421002，China
^2.Hunan Industry Polytechnic, Changsha 410208，China

Received:2020-03-13 Online:2020-09-26 Published:2020-09-25
Contact: XIONG Jianwu E-mail:3167690142@qq.com

摘要/Abstract

摘要：

针对塑件脱模困难、扁干寿命短和生产效率低等实际生产难题，设计了1种1模2腔底盖塑件的热流道两板注塑模具。模具中，设计了斜顶头+圆斜顶杆组合的斜顶机构有利于降低斜顶机构的加工难度和装配难度；设计了扁斜顶杆+圆杆导向的斜顶机构解决了扁顶杆工作寿命短的难题，提高了模具的整体使用寿命；设计了一种模内热切侧浇口机构，有效提高了塑件生产效率和降低人工剪除浇口成本。模具通过开设等间距型排气槽、成型件单侧定位压紧安装、模板闭模平衡块、导套开槽通气等措施来保证模具工作的可靠性。冷浇口模内热切机构由浇口切除机构和驱动机构组成，机构结构简单，有较好的模具生产推广价值。

关键词: 热流道, 注塑, 斜顶杆机构, 浇口热切, 结构设计

Abstract:

Aiming at three defects in the current mold, we designed a hot runner two?plate injection mold with two cavities for a bottom cover plastic part. In view of the difficulty in demolding plastic parts, we first designed an inclined roof mechanism consisting of an inclined head and a round rod lifter to reduce the machining and assembly difficulties of the lifter mechanism. Afterward, we designed a lifter mechanism with a flat lifter guided by a round rod to overcome the short lifetime of the flat lifter and improve the overall service life of the mold. Thirdly, we designed a hot side gate removing mechanism in the mold, which could effectively improve the production efficiency of plastic parts and reduce the cost of manual gate removing. The reliability of the mold was guaranteed by setting the equal distance type exhaust slot, one side positioning and pressing installation of the forming part, closing the balance block of the mold, and slotting and ventilation of the guide sleeve. The cold side-gate hot removing mechanism in the mold was composed of a gate remo-ving mechanism and a driving mechanism. The mechanism has a simple structure and exhibits a potential for future practical application.

Key words: hot runner, injection molding, lifter mechanism, gate hot removing, structural design

中图分类号:

TQ320.66⁺2

刘少华, 熊建武, 徐文庆, 胡智清, 陈黎明, 汪哲能. 车门拉钩底座盖热流道注塑模及模内热切机构结构设计[J]. 中国塑料, 2020, 34(9): 90-95.

LIU Shaohua, XIONG Jianwu, XU Wenqing, HU Zhiqing, CHEN Liming, WANG Zheneng. Structure Design of Hot Runner Injection Mold and Hot Cutting Mechanism in Mold for Door Hook Base Cover[J]. China Plastics, 2020, 34(9): 90-95.

图/表 9

图1 塑件的三维模型

Fig.1 3D model of plastic part

图2 塑件结构分析

Fig.2 Structure analysis of plastic parts

图3 浇注系统分析

Fig.3 Analysis of gating system

图4 分型及脱模设置

Fig.4 Setting of parting and demoulding

图5 模内热切原理

Fig.5 Principle of gate hot removing in the mold

图6 模具结构

Fig.6 Mold structures

图7 脱模机构安装

Fig.7 Demoulding mechanism installation

图8 模内热切机构

Fig.8 Hot removing part in mold mechanism

图9 成型塑件

Fig.9 Plastic molded parts

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车门拉钩底座盖热流道注塑模及模内热切机构结构设计

Structure Design of Hot Runner Injection Mold and Hot Cutting Mechanism in Mold for Door Hook Base Cover

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