肘杆式全电动注塑机胀模特性实验研究

doi:10.19491/j.issn.1001-9278.2020.05.010

中国塑料 ›› 2020, Vol. 34 ›› Issue (5): 59-62.DOI: 10.19491/j.issn.1001-9278.2020.05.010

肘杆式全电动注塑机胀模特性实验研究

刘刚¹, 傅南红², 焦晓龙², 窦希宇¹, 许宇轩¹, 谢鹏程¹()

^1.北京化工大学机电工程学院，北京 100029
^2.海天塑机集团有限公司，浙江宁波 315801

收稿日期:2020-02-19 出版日期:2020-05-26 发布日期:2020-05-22
基金资助:
宁波市重大科技专项(2018B10082)

Experimental Investigation on Mold Separation Characteristics of Toggle⁃type Full Electric Injection Molding Machine

Gang LIU¹, Nanhong FU², Xiaolong JIAO², Xiyu DOU¹, Yuxuan XU¹, Pengcheng XIE¹()

^1.College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
^2.Haitian Plastic Machinery Group Co, Ltd, Ningbo 315801, China

Received:2020-02-19 Online:2020-05-26 Published:2020-05-22
Contact: Pengcheng XIE E-mail:xiepc@foxmail.com

摘要/Abstract

摘要：

注射成型过程中由于型腔压力大于锁模力而产生的胀模现象对注塑制品质量具有显著的影响。基于全电动三板肘杆式注塑机，系统研究了注射成型过程中的胀模特性和由胀模引起的锁模力变化特性。结果表明，在肘杆式注塑机的胀模过程中，锁模力变化量能够反映胀模程度的大小，锁模力最大增量与锁模力变均可作为衡量注塑制品质量的指标。

关键词: 胀模特性, 胀模量, 锁模力最大增量, 锁模力变

Abstract:

The phenomenon of mold separation caused by a cavity pressure greater than the clamping force during the injection molding process has a significant impact on the quality of injection?molded products. Based on an all?electric three?plate elbow?bar injection?molding machine, the characteristics of mold separation during the injection molding process and the change in clamping force caused by the mold separation were systematically investigated. The results indicated that the change in clamping force could reflect the degree of mold separation during the injection cycle of the toggle injection?molding machine. Both the increment of maximum clamping force and the change of clamping force could be used as an indicator to measure the weight of injection?molded product.

Key words: characteristics of mold separation, mold separation, maximum increment in clamping force, clamping force change

中图分类号:

TQ320.66⁺2

刘刚, 傅南红, 焦晓龙, 窦希宇, 许宇轩, 谢鹏程. 肘杆式全电动注塑机胀模特性实验研究[J]. 中国塑料, 2020, 34(5): 59-62.

Gang LIU, Nanhong FU, Xiaolong JIAO, Xiyu DOU, Yuxuan XU, Pengcheng XIE. Experimental Investigation on Mold Separation Characteristics of Toggle⁃type Full Electric Injection Molding Machine[J]. China Plastics, 2020, 34(5): 59-62.

图/表 7

图1 模具型腔结构图

Fig.1 Structural diagram of the mold cavity

注射速度/

$m m ? s - 1$

转压点位置/

$m m$

保压压力/

$M P a$

保压时间/

$s$

储料位置/

$m m$

注射速度/

$m m ? s - 1$

转压点位置/

$m m$

保压压力/

$M P a$

保压时间/

$s$

储料位置/

$m m$

表1 实验主要工艺参数

Tab.1 Main technological parameters of the experiment

表1 实验主要工艺参数

Tab.1 Main technological parameters of the experiment

图2 胀模特性相关变量示意图

Fig.2 Schematic diagram of variables related to mold separation characteristics

图3 胀模特性曲线

Fig.3 Mold separation characteristic curve

图4 锁模力?时间曲线

Fig.4 Clamping force?time curve

相关系数（r）
锁模力最大增量	锁模力变
0.99	-0.94

表2 锁模力最大增量、锁模力变?制品质量相关系数

Tab.2 Maximum clamping force increase, clamping force change?product mass correlation coefficient

图5 锁模力最大增量?制品质量、锁模力变?制品质量曲线

Fig.5 Maximum increase of clamping force?product mass, clamping force change?product mass curve

参考文献 6

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肘杆式全电动注塑机胀模特性实验研究

Experimental Investigation on Mold Separation Characteristics of Toggle⁃type Full Electric Injection Molding Machine

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