文章摘要
Study on Pressure Loss of Compound along Runner in Injection Molding Mold
Received:June 01, 2022  Revised:June 01, 2022
DOI：10.12136/j.issn.1000-890X.2023.08.0621
Key Words: injection molding mold；pressure loss of compound；process parameter；theoretical calculation；measure
Author NameAffiliationE-mail
CAO Guangru Zhuzhou Times Ruiwei Vibration Reduction Equipment Co.，Ltd 1073769330@qq. com 
LI Yong Zhuzhou Times Ruiwei Vibration Reduction Equipment Co.，Ltd  
LEI Junyu Zhuzhou Times New Materials Technology Co.，Ltd  
LI Bin Zhuzhou Times Ruiwei Vibration Reduction Equipment Co.，Ltd  
LIN Sheng Zhuzhou Times Ruiwei Vibration Reduction Equipment Co.，Ltd  
LIU Wensong Zhuzhou Times New Materials Technology Co.，Ltd  
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Abstract:
      The study on the pressure loss of the compound along the runner in the injection molding mold（referred to as the pressure loss of the compound） was introduced.The results showed that the pressure loss of the compound was related to the injection speed of the compound，temperature of the compound，runner length，runner cross-sectional parameters and rheological parameters of the compound.Under specific process parameters（injection pressure of 120 MPa，injection time of 60 s，plasticizing temperature of 70 ℃，mold temperature of 160 ℃ and injection volume of the compound of 220 mL），the pressure loss of the compound was 0.649 MPa for every 10 mm runner length.The measured pressure loss of the compound during the injection process was smaller than theoretical calculation value，and the error of the stabilized pressure loss of the compound was within 8 MPa.The pressure loss of the compound was more sensitive to the injection time，plasticizing temperature and mold temperature.The shorter the injection time was，the greater the pressure loss of the compound was，and the higher the plasticizing temperature and mold temperature were，the smaller the pressure loss of the compound was.
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