Optimization design of mold cooling channel with lattice structure

doi:10.19491/j.issn.1001-9278.2024.11.019

Abstract

Abstract:

Taking a certain spray cosmetic cap as an object， a lattice structure was designed on the top of the mold core based on the design of the conformal cooling channel of mold core. A simulation was carried out with the help of the Moldex and Ansys software to analyze the temperature distribution on the surface of the mold core as well as the stress situation. Futhermore， the experimental validation was also performed on the mold core parts manufactured by selective laser melting. The results indicated that the resultant lattice structure exhibited good heat transfer performance and improved the problem in the uneven temperature distribution significantly. The surface of the core presented a homogenous temperature distribution， and its surface temperature difference was improved by 78 %. The strength of the core of the mold with the added lattice structure could meet a requirement of practical use.

Key words: mold, conformal cooling channel, lattice structure

CLC Number:

TQ320.66

CHU Zhong, ZHAO Caoxi, KANG Hui, NI Zihan, LI Zhitong, ZHANG Jicong. Optimization design of mold cooling channel with lattice structure[J]. China Plastics, 2024, 38(11): 114-117.

Figures/Tables 13

Fig.1. Shape of the plastic part and its design parameter

Fig.2. Tridiametral cell

Fig.3. Structure of the clear powder

Fig.4. Structure of the lattice

Fig.5. Structure of the final core

Fig.6. Temperature of the mold core

Fig.7. Selection of the temperature points

点位	1	2	3	4	5
添加晶格结构前	28.05	27.42	30.90	26.08	26.07
添加晶格结构后	27.33	26.57	27.05	26.04	26.02

Tab.1. Temperature distribution at each point of the water circuit before and after adding lattice structure

Fig.8. Selection of the analysed surfaces

Fig.9. Analysis results of stress

Fig.10. Cores of the 3D printed mould

Fig.11. Test setup

Fig.12. Temperature changes of the monitoring sites

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