Moldflow⁃based Optimization Analysis and Die Design of UAV Upper Cover

doi:10.19491/j.issn.1001-9278.2020.06.015

Abstract

Abstract:

In this paper, the mold flow analysis of plastic products of UAV upper cover was performed with the Moldflow analysis software, and several schemes of gating system were designed by combining with the molding technology of plastic products. The gating system of the UAV upper cover model was optimized through the analysis of mold flow, and a set of effective gating systems were determined. The injection process parameters were optimized, and the design of injection mold was completed on the basis of the analysis results. The product was found to meet the design requirements according to the molding test results.

Key words: injection?molding process, Moldflow software, mold design, all effects deflection

CLC Number:

TQ 320.66⁺2

Hong YANG. Moldflow⁃based Optimization Analysis and Die Design of UAV Upper Cover[J]. China Plastics, 2020, 34(6): 92-99.

Figures/Tables 17

Fig. 1. Engineering drawing

Fig. 2. Product gating system diagram

Fig.3. Filling time of six point inlet

Fig. 4. Filling process of eight point inlet

Fig. 5. Gating system

Fig.6. Six gates and eight gates’ pressure at V/P switchover

Fig.7. Weld lines

Fig.8. Air traps

Fig. 9. Runner system

Fig. 10. All effects: deflection

Fig. 11. Temperature at flow front

Fig. 12. Volumetric shrinkage at ejection

Fig.13. Pressure at injection location

Fig.14. Filling control curve setting

Fig.15. Parting and forming part

Fig.16. Cooling system

Fig.17. Injection mold drawing of UAV upper cover

References 11

1	史勇.Moldflow模流分析实例教程[M].北京:化学工业出版社，2019.
2	秦欣,苏小平.基于Moldflow 的PLC外壳盖注塑模设计与优化[J]. 塑料科技,2018(9): 115⁃120.
	QIN X, SU X P. Design and Optimization of Injection Mold for PLC Shell Cover Based on Moldflow[J].Plastics Science and Technology,2018(9): 115⁃120.
3	董丽媛,周博.基于 Moldflow的薄壁注塑件优化设计[J]. 机械工程师,2015(12)：106⁃108.
	DONG L Y, ZHOU B. Optimal Design of Thin⁃wall Injection Molding Parts Based on Moldflow[J].Mechanical Engineer,2015(12)：106⁃108.
4	高源熙,杜武青,王莹,等.基于Moldflow的生物仪器盖板注塑模具优化设计[J]. 塑料工业，2019（1）:64⁃68.
	GAO Y X, DU W Q, WANG Y,etc. Optimized Design of Biological Instrument Cover of Injection Mould Based on Moldflow[J].China Plastics Industry,2019（1）:64⁃68.
5	孙国栋,刘长华. 基于Moldflow软件的开关盒上盖浇口优化设计[J]. 塑料, 2011, 40(4): 103⁃105.
	SUN G D, LIU C H. Optimization of Gate Location for Switch Box Top Head based on Moldfolw Software[J].Plastics,2011, 40(4): 103⁃105.
6	赵战锋. 某汽车轮毂罩热流道模流分析与模具设计 [J]. 塑料工业，2016，44(9):58⁃62，69.
	ZHAO Z F. Hot Runner Mould Flow Analysis and Injection Mould Design of Automobile Hub Cap[J]. China Plastics Industry，2016，44(9):58⁃62，69.
7	俞芙芳，李智超. 汽车空调下机壳热流道模具设计 [J]. 工程塑料应用，2010，38(4):72⁃74.
	YU F F,LI Z C. Design of Hot Runner Mould for the Sheel of the Automobile Air⁃conditioning[J]. Engineering Plastics Application，2010，38(4):72⁃74.
8	韩以伦,李志恒,梁彦高. 基于Moldflow的家用电器薄壁外壳翘曲优化分析[J]. 塑料工业, 2017, 45(5): 48⁃51.
	HAN Y L,LI Z H, LIANG Y G. Analysis of Warpage Optimization of Thin Wall Shell for Household Appliance Based on Moldflow[J].China Plastics Industry,2017, 45(5): 48⁃51.
9	秦贞明，王晓瑾，郭建芬，等. 厚壁塑料制品的注射成型流动模拟分析及模具结构优化 [J]. 工程塑料应用，2011，39(7):41⁃43.
	QIN Z M，WANG X J，GUO J F，et al. Injection Molding Analysis and Die Structure Optimization of Thick plastics[J]. Engineering Plastics Application，2011，39(7):41⁃43.
10	屈华昌. 塑料成型工艺与模具设计[M]. 北京: 高等教育出版社,2001：231⁃233.
11	闵志宇，沈俊芳，盛腾飞，等.基于 Moldflow 的复杂塑件模具优化设计［J］.塑料工业，2015，43 (6): 39⁃43．
	MIN Z Y, SHEN J F, SHENG T F,etc. Optimum Design of Injection Molding of Complex Mould Based on Moldflow［J］.China Plastics Industry,2015，43 ( 6): 39⁃43．

[1]	ZHAO Zhanfeng. Mold Design of Automobile Handle Based on GAIM CAE Optimization [J]. China Plastics, 2020, 34(3): 78-84.
[2]	WANG Jing , ZHOU Laishui , LI Peng, BI Jianping , LIU Jun. Study on Automatic Parting Design Technology of Injection Mold [J]. China Plastics, 2020, 34(12): 53-58.
[3]	WANG Jing, LIU Xuemin, CUI Yubo. Design of Injection Mold for Plastic Parts with Dense Shaped Holes [J]. China Plastics, 2020, 34(11): 81-85.
[4]	LI Ya. Optimization of Balanced Flow for Injection Molding of Soap Box Based on Moldflow [J]. China Plastics, 2019, 33(9): 72-76,99.
[5]	. Design of Secondary Core-pulling Mechanism and Simplified Four-time Opening Three-platemould for Slider in Medicine Transit Box [J]. China Plastics, 2019, 33(8): 118-126.
[6]	TANG Dingde, TIAN Ke. Design of Simplified Mold with Special Three-step Demolding Mechanism for Blade of Unmanned Aerial Vehicle [J]. China Plastics, 2019, 33(12): 80-88.
[7]	. Design of Combined Cavity Injection Mold for Small-size Plastic Parts [J]. China Plastics, 2018, 32(11): 125-130.
[8]	. Reverse Engineering Modeling and Mold Design of Handle Back Cover of Hair Dryer [J]. China Plastics, 2018, 32(11): 131-135.
[9]	. Structural Analysis of Injection Moulds Based on Moldflow and Abaqus Softwares [J]. China Plastics, 2018, 32(02): 128-133.
[10]	. Application of CAE Technology in Mold Design of Car Engine Hood [J]. China Plastics, 2017, 31(7): 132-136 .
[11]	. Design of Injection Molds for Multi-pin Plug Insulators [J]. China Plastics, 2017, 31(5): 98-102 .
[12]	. Optimization of GasAssisted Injectionmolding Process for Vertical Beam Base Parts Based on Moldflow [J]. China Plastics, 2017, 31(1): 75-79 .
[13]	. Design of Injection Molds for Toilet Seats Based on Moldflow and UG Software [J]. China Plastics, 2017, 31(1): 98-104 .
[14]	. On-line Test Technique for PVT Property of Polymer Materials and Its Application in Mold Design [J]. China Plastics, 2016, 30(07): 57-61 .
[15]	. Application of CAE in Injection Mould Parting Surface Compensation [J]. China Plastics, 2016, 30(05): 82-86 .