Mold design for oblique orifice air chamber in automotive heat exchanging system

doi:10.19491/j.issn.1001-9278.2023.09.015

Abstract

Abstract:

According to the design characteristics and production requirements of the mold for an oblique orifice air chamber in the automotive heat exchange system. A more detailed molding process scheme was proposed for the PA66/30 %GF plastic parts， which included the characteristic process analysis of plastic parts， structural design， working principle， and product pre⁃variation technology. The core technologies for the three⁃time slider mechanism of the inclined orifice air chamber mold and product pre⁃variation were intensively studied， and the structural design and application investigation of the molding process for the plastic parts were conducted. Through verifying the preform of the orifice chamber repeatedly， the optimal mathematical model of the orifice chamber was designed， and an orifice chamber mold was developed to directly meet the requirement of production assembly. The research results indicated that the developed mold was more compact with fewer molding defects， which improved productivity and stable operation significantly through three slider designs. Owing to the use of an open mold design solution for the PA66/30 %GF parts， the product was converted from a metal part to a plastic part. This significantly reduced the material costs and obtained a lightweight design for automotive parts. As a result， the overall weight of the vehicle was reduced and the fuel economy was improved.

Key words: forming process, triple slider mechanism, working principle, product pre?variation

CLC Number:

TQ320.66⁺2

YE Weiwen, CHEN Zhensen, JIANG Bingchun, WU Guangming. Mold design for oblique orifice air chamber in automotive heat exchanging system[J]. China Plastics, 2023, 37(9): 102-108.

Figures/Tables 16

Fig.1. 3D view of circulating air chamber Q2

Fig.2. 3D View of oblique tube air chamber Q1

Fig.3. Cross⁃sectional view of the oblique orifice air chamber Q1

Fig.4. Parting surface and exhaust

Fig.5. Overall structure of the mould in 2D

Fig.6. Three⁃time slide mechanism

Fig.7. Original closed mould state

Fig.8. State of the first movement

Fig.9. State of the second movement

Fig.10. State of the third movement

Fig.11. Physical picture of the air chamber

Fig.12. Pouring system （hot runner）

Fig.13. Cooling system

Fig.14. Moldflow X，Y，Z direction variant data of oblique tube air chamber Q1 and recirculation air chamber Q2

Fig.15. First pre⁃variation design data

Fig.16. Final pre⁃variation product diagram

References 13

1	张维合，邓成林，张艳华，等.汽车C柱左下护板顺序阀热流道倒推注塑模设［J］.中国塑料，2022，36（12）：127⁃132.
	ZHANG W H， DENG C L， ZHANG Y H， et al. Design of hot runner reverse injection mold for the sequential valve of the left lower guard plate of the automobile C⁃pillar ［J］. China Plastics， 2022， 36 （12）： 127⁃132.
2	张维合.注塑模具设计实用手册［M］.北京：化学工业出版社，2019.
3	赵利平，张维合，侯贤州，等.电热水壶手柄旋转抽芯模具设计［J］.工程塑料应用，2023，51（03）：82⁃87.
	ZHAO L P， ZHANG W H， HOU X Z， et al. Design of a rotating core⁃pulling mold for the handle of an electric kettle ［J］. Engineering Plastics Application， 2023，51 （03）： 82⁃87.
4	张维合，冯国树，宋东阳，等.机器人关节轴二次抽芯及随形水路注塑模具设计［J］.塑料工业，2022，50（03）：63⁃66，109.
	ZHANG W H， FENG G S， SONG D Y， et al. Design of injection molds for robot joint shaft secondary core pulling and shape following waterway ［J］. Plastic Industry， 2022，50 （03）： 63⁃66，109.
5	陈叶娣，黄敏高，严小锋.管接头的二次抽芯机构注塑模具开发［J］.现代塑料加工应用，2019，31（06）：48⁃51.
	CHEN Y D， HUANG M G， YAN X F. Development of injection mold for secondary core pulling mechanism of pipe joint ［J］. Modern Plastic Processing Application， 2019，31 （06）： 48⁃51.
6	赵利平，秦瑞亮，侯贤州，等.弯管热流道模具的旋转抽芯脱模设计［J］.塑料科技，2023，51（02）：84⁃87.
	ZHAO L P， QIN R L， HOU X Z， et al. Rotary core⁃pulling demolding design of hot runner molds for bent pipes ［J］. Plastic Technology， 2023，51 （02）： 84⁃87.
7	简忠武，苏曦，王品，等.给排水管三通接头旋转抽芯机构注塑模具设计［J］.工程塑料应用，2020，48（9）：88⁃91，102.
	JIAN Z W， SU X， WANG P， et al. Design of injection mold for rotary core pulling mechanism of water supply and drainage pipe tee joint ［J］. Engineering Plastics Application， 2020，48 （9）： 88⁃91，102.
8	贺柳操，卞平，肖国华.双头螺纹花洒旋转式抽芯脱模机构及其注塑模具设计［J］.塑料工业，2016，44（10）：42⁃45，49.
	HE L C， BIAN P， XIAO G H. Design of a double head thread sprinkler rotary core pulling and demolding mechanism and its injection mold ［J］. Plastic Industry， 2016，44 （10）： 42⁃45，49.
9	肖国华.180°弯管塑件的抽芯机构及注塑模设计［J］.工程塑料应用，2021，49（08）：81⁃86.
	XIAO G H. Core pulling mechanism and injection mold design for 180 ° bend plastic parts ［J］. Engineering Plastics Application， 2021，49 （08）： 81⁃86.
10	王怀奥，沈忠良.汽车液压油管90°弯管接头注塑模具设计［J］.工程塑料应用，2017，45（11）：76⁃80，97.
	WANG H A， SHEN Z L. Design of injection mold for 90 ° bend joint of automotive hydraulic oil pipe ［J］. Engineering Plastics Application， 2017，45 （11）： 76⁃80，97.
11	罗文锋.大角度圆弧弯管抽芯机构及注射模设计［J］.模具工业，2019，45（03）：31⁃36.
	LUO W F. Design of the core pulling mechanism and injection mold for large angle arc bend ［J］. Mold Industry， 2019，45 （03）： 31⁃36.
12	简发萍，郑得庆，陈小红，等.曲面分型多方位斜向抽芯注塑模设计［J］.塑料工业，2022，50（1）：94⁃98.
	JIAN F P， ZHENG D Q， CHEN X H， et al. Design of a multi directional oblique core pulling injection mold for curved surface parting ［J］. Plastic Industry， 2022，50 （1）： 94⁃98.
13	杨安，肖国华.端盖轴承槽半圆周旋转抽芯机构模具设计［J］.塑料，2019，48（5）：128⁃131.
	YANG A， XIAO G H. Mold design for the semi circular rotation core pulling mechanism of the end cover bearing groove ［J］. Plastics， 2019，48 （5）： 128⁃131.

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