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All Journal IJOMEST : International Journal of Mechanical Engineering Science and Technology
Mulyadi Mulyadi
Politeknik Negeri Padang, Indonesia

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Design of a Mini Injection Molding Machine and Injection Analysis of Products Using CAE Software Nurul Dwi Rahma; Aidil Zamri; Mulyadi Mulyadi; Yuliarman Yuliarman
International Journal of Mechanical Engineering Science and Technology Vol. 1 No. 1 (2026): IJOMEST: International Journal of Mechanical Engineering Science and Technology
Publisher : Asosiasi Diseminasi Rekayasa Dan Inovasi Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67795/ijomest.v1i1.17

Abstract

The  increasing  amount  of  HDPE  (High-Density  Polyethylene)  plastic  waste  requires  more  efficient  and  economical processing  technologies,  particularly  for  small-and  medium-scale  applications.  This  study  aims  to  design  a  mini injection  molding  machine  for  processing  HDPE  plastic  waste  and  to  analyze  the  product  injection  process  using Computer-Aided  Engineering  (CAE)-based  software.  The  machine  was  designed  using  SolidWorks,  focusing  on  the injection system, clamping system, and heating system. The injection process was analyzed using SolidWorks Plastics with  variations  in gate  position  and  melt  temperature  to evaluate injection  pressure, material  flow  distribution,  and product defects. The results show that the designed machine is capable of producing a stable HDPE injection process using a screw with an L/D ratio of 20:1 and a ball screw-based clamping system. Simulation results indicate that a gate position  located  at  the  center  of  the  product  provides  the  best  flow  distribution  with  minimal  weldline  defects.  The optimum  melt  temperature  was  found  to  be  240°C,  with  an  injection  pressure  of  approximately  10  MPa.  These findings indicate that the integration of mini injection molding technology and CAE-based analysis has the potential to support   more   efficient   plastic   recycling   processes   while   minimizing   design   revisions,   material   waste,   and manufacturing costs in small-scale production systems
Co-Authors Aidil Zamri Nurul Dwi Rahma Yuliarman Yuliarman