Design of injection mold for split air conditioning chassis

doi:10.19491/j.issn.1001-9278.2021.12.021

Abstract

Abstract:

Aiming at the problem that the split air conditioning chassis is easy to fracture and deform during injection production， an injection mold with a simple structure and a reliable operation was developed. According to the structure of the air conditioning chassis， the combined slider structure was adopted to solve the demolding problem of the air outlet and the upper stud of the air outlet. The demolding structure of sliding block plus horizontal inclined top was adopted to solve the problem that the central axis of the air guide plate hole in the middle could not stay on the same line with that of the air guide plate hole at both ends. The demolding structure of inclined core pulling plus slider and cylinder was adopted to solve the problem that the drainage hole of chassis was easy to produce the edge. A damping spring was installed on the inclined guide pillar slider. This can effectively overcome the impact of the slider on other mold parts when opening and closing the mold. The inclined top seat of the fixed mold inclined top was installed on the hot runner electrical parts plate. This makes the two plate molds have the characteristics of the three plate molds， and the demolding problem of the fixed mold inclined top is solved. A reinforcing rod was installed on the inclined top of the fixed mold to effectively avoid the deformation of the inclined top of the fixed mold.

Key words: air conditioning chassis, combined slide block, slide block plus horizontal inclined top, inclined core pulling plus slide block, horizontal inclined top, fixed mold inclined top

CLC Number:

TQ320.66⁺2

SUN Lingzhen, YE Shuo. Design of injection mold for split air conditioning chassis[J]. China Plastics, 2021, 35(12): 129-136.

Figures/Tables 15

Fig.1. Air conditioning chassis structure diagram

Fig.2. Detailed features on the product

Fig.3. Structure diagram of combined slider

Fig.4. Demoulding structure drawing of air guide plate hole with slider+horizontal inclined bar

Fig.5. Demoulding structure of oblique core?pulling + slider + cylinder

Fig.6. Demoulding structure of inclined stud with inclined core?pulling+slider

Fig.7. Slider structure with spring

Fig.8. Schematic diagram of moving die inserts

Fig.9. Fixed die inclined roof structure

Fig.10. Assembly schematic diagram of inclined top stiffening rod and fixed die inclined top

Fig.11. Six feed points

Fig.12. Modular flow analysis effect diagram

Fig.13. Cooling system of moving mold part

Fig.14. Profile structure of the mould

Fig.15. Photos of the split air conditioning chassis

References 16

1	塑料模具设计手册编写组.塑料模具设计手册［M］.北京：机械工业出版社，2002：29⁃30.
2	詹建新.分体空调器底盘注射模设计［J］.模具制造，2009，9（8）：11⁃15.
	ZHAN J X.Design of Injection mold for the split⁃type air condition underpan［J］.Die & Mould Manufacture，2009，9（8）：11⁃15.
3	张晓陆.壁挂空调器电器盒注射模具设计及制造［J］.模具工程，2012，38（5）69⁃71.
	ZHANG X L.Design and manufacture of the injection mould for handing air⁃condition electricity⁃box［J］.Mould＆Die Project，2012，38（5）69⁃71.
4	张建卿.L10面条机主体盖前模多重脱模机构及其注塑模具设计［J］.塑料，2016，45（5）：83⁃86.
	ZHANG J Q. Mould design and CAE optimization for automobile heater under⁃shell［J］.Plastics，2016，44（5）：65⁃69.
5	阳夏冰，杨素华.基于UG的控制器支架热流道注塑模具设计与成型件数控加工［J］.中国塑料，2019，33（8）：112⁃117.
	YANG X B，YANG S H.Design of hot runner injection mold for controller support based on UG and NC machining of molding parts［J］.China Plastics，2019，33（8）：112⁃117.
6	詹建新.分体空调器出风框注射模设计［J］.模具制造，2009，9（2）：71⁃75.
	ZHAN J X.Design of Injection mold for the split air⁃condition wind⁃casing［J］.Die & Mould Manufacture，2009， 9（2）：71⁃75.
7	余露，陈兴，王进，等.遥控器主体盖特殊脱模机构及注塑模具设计［J］.工程塑料应用，2018， 46（9）：83⁃88.
	YU L，CHEN X，WANG J，et al．Design of special demoulding mechanism and injection mould for remote control main body cover［J］.Engineering Plastics Application，2018，46（9）：83⁃88.
8	肖露云，张建卿.咖啡壶盖两次抽芯脱模机构及其注塑模具设计［J］.工程塑料应用，2018， 46（3）：94⁃99.
	XIAO L Y，ZHANG J Q.Design of secondary core pulling demoulding mechanism and its injection mold for coffee pot cover［J］.Engineering Plastics Application，2018， 46（3）：94⁃99.
9	张晓陆.壁挂空调器面板注射模设计及制造［J］.模具制造，2005，5（6）42⁃45.
	ZHANG X L.Design and manufacture of injection mold for hanging air⁃conditioner face⁃plate［J］. Die&Mould Manufacture，2005， 5（6）42⁃45.
10	杨安，董扬德，胡宏伟，等.法兰盖滑块脱模机构及注塑模具设计［J］.工程塑料应用，2017， 45（10）：82⁃86.
	YANG A，DONG Y D，HU H W，et al.Design of slider demoulding mechanism and injection mold for flange cover［J］.Engineering Plastics Application，2017， 45（10）：82⁃86.
11	游思坤，刘晓初，徐红辉，等.壁挂式空调后座注射模设计［J］.模具工业，2007， 33（6）：39⁃42.
	YOU S K，LIU X C，XU H H，et al.An injection mould for the backseat of hanging air⁃conditioner［J］.Die & Mould Industry，2007， 33（6）：39⁃42.
12	刘细芬，张帆.CAD/CAE技术在注射模设计中的应用［J］.现代塑料加工应用，2009， 21（4）：55⁃58.
	LIU X F， ZHANG F.Application of CAD/CAE techno⁃logy to injection mould design［J］.Modern Plastics Processing and Applications，2009， 21（4）：55⁃58.
13	高永生，陈建文，王洋.注塑模具整圈环形倒扣的一种内抽芯机构设计［J］.工程塑料应用，2019，47（8）：82⁃85.
	GAO Y S，CHEN J W，WANG Y.Design of an inner core⁃pulling mechanism for the whole ring undercut of injection mold［J］.Engineering Plastics Application，2019，47（8）：82⁃85.
14	陈长生. 机械基础［M］北京：机械工业出版社，2020：321⁃313.
15	王建玲，刘伟，王永瑛.豆浆机过滤器注塑模具设计［J］.塑料，2019，48（3）：78⁃81.
	WANG J L，LIU W， WANG Y Y. Soybean milk machine filter injection mold design ［J］. Plastics， 2019，48（3）：78⁃81.
16	李振宇.多种抽芯机构脱模的护帽注塑模设计［J］.塑料科技，2015，43（11）：82–86.
	LI Z Y. Design of injection mould for protective cap with various pulling core demoulding mechanism［J］. Plastics Science and Technology，2015，43（11）：82⁃86.

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