Computer simulation of the filling process in gas-assisted injection molding based on gas-penetration modeling

2003 ◽  
Vol 90 (9) ◽  
pp. 2377-2384 ◽  
Author(s):  
Huamin Zhou ◽  
Dequn Li
Keyword(s):  
Computer Simulation ◽  
Injection Molding ◽  
Filling Process ◽  
Gas Penetration

Analysis on vibration characteristics of screw in filling process of dynamic injection molding machine

2016 ◽  
Vol 36 (8) ◽  
pp. 861-866 ◽  
Author(s):  
Quan Wang ◽  
Zhenghuan Wu
Keyword(s):  
Injection Molding ◽  
Processing Parameters ◽  
Axial Vibration ◽  
Filling Process ◽  
Molding Machine ◽  
Lumped Mass ◽  
Injection Molding Machine ◽  
Injection Speed ◽  
And Performance ◽  
Injection Screw

Abstract This paper presents a study of the characteristics of axial vibration of a screw in the filling process for a novel dynamic injection molding machine. By simplifying a generalized model of the injection screw, physical and mathematic models are established to describe the dynamic response of the axial vibration of a screw using the method of lumped-mass. The damping coefficient of the screw is calculated in the dynamic filling process. The amplitude-frequency characteristics are analyzed by the simulation and experimental test of polypropylene. The results show that the amplitude of a dynamic injection molding machine is not only is related to structure parameters of the screw and performance of the material, such as non-Newtonian index, but also depends on the processing parameters, such as vibration intensity and injection speed.

The role of gas penetration on morphological formation of polycarbonate/polyethylene blend molded by gas-assisted injection molding

2007 ◽  
Vol 42 (17) ◽  
pp. 7275-7285 ◽  
Author(s):  
Guo-Qiang Zheng ◽  
Wei Yang ◽  
Li Huang ◽  
Zhong-Ming Li ◽  
Ming-Bo Yang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Polyethylene Blend ◽  
Gas Penetration
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