Modification of Cold Runner Design in Injection Molding Processes

2018 ◽  
pp. 45-63
Author(s):  
Mehdi Moayyedian
Keyword(s):  
Injection Molding ◽  
Runner Design

Numerical Simulation and Balance Design of Rubber Injection Mold Gating System Based on POLYFLOW

2012 ◽  
Vol 501 ◽  
pp. 190-195
Author(s):  
Lian Shuai Chen ◽  
Hui Min Zhang ◽  
Jia Teng Niu
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Injection Velocity ◽  
Mold Design ◽  
Injection Mold ◽  
Gating System ◽  
Processing Parameter ◽  
Inlet Flow ◽  
Injection Mold Design ◽  
Runner Design

Rubber injection molding is applied in more and more applications in rubber production process. Design of gating system is the most important in rubber injection mold design. Poor runner design will lead to uneven injection velocity and pressure which affect the size and shape and the quality of the rubber products. This paper first adopted POLYFLOW numerical simulation. Three different inlet flow rates for multi-cavity mold were simulated and analyzed by POLYFLOW software in this paper. Non-equilibrium gating system was further optimized by the calculation method of Balanced Gate Value and numerical simulation. The best inlet flow rate and the best runner size were ultimately obtained. It was proven that Numerical simulation results are of great significance for rubber injection mold design and injection molding processing parameter selection.

scholarly journals Optimization of Runner Design Using Injection-Molding Flow Simulator. Control of Position of Weld-Line.

Seikei-Kakou ◽  
1998 ◽  
Vol 10 (7) ◽  
pp. 548-553 ◽  
Author(s):  
Kenji YASUTAKE ◽  
Atushi YOKOYAMA ◽  
Hiroyuki HAMADA
Keyword(s):  
Injection Molding ◽  
Weld Line ◽  
Runner Design ◽  
Molding Flow ◽  
Flow Simulator

scholarly journals Rapid Numerical Estimation of Pressure Drop in Hot Runner System

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 207
Author(s):  
Jae Sung Jung ◽  
Sun Kyoung Kim
Keyword(s):  
Pressure Drop ◽  
Injection Molding ◽  
Steady Flow ◽  
Design Process ◽  
Newtonian Fluid ◽  
Numerical Estimation ◽  
Generalized Newtonian Fluid ◽  
Computer Tool ◽  
Pressure Drops ◽  
Runner Design

To determine dimensions in the hot runner systems, given a material, it is necessary to predict the pressure drop according to them. Although modern injection molding simulators are able to evaluate such pressure drops, they are expensive and demanding to be employed as a design utility. This work develops a computer tool that can calculate a pressure drop from the sprue to the gate assuming a steady flow of a generalized Newtonian fluid. For a four drop hot runner system, the accuracy has been verified by comparing the obtained results with those by a commercial simulator. This paper presents how to utilize the proposed method in the hot runner design process.

Filling Behavior of Polymer Material into Sub-^|^mu;m Structure in Injection Molding Process

2013 ◽  
Vol 133 (4) ◽  
pp. 105-111
Author(s):  
Chisato Yoshimura ◽  
Hiroyuki Hosokawa ◽  
Koji Shimojima ◽  
Fumihiro Itoigawa
Keyword(s):  
Injection Molding ◽  
Polymer Material ◽  
Injection Molding Process ◽  
Molding Process

Technological characteristics of injection molding of dynamic elastoplasts based on thermoplastic polyolefins and butyl rubber

2019 ◽  
pp. 58-67
Author(s):  
N. T. Kakhramanov ◽  
◽  
Z. N. Huseynova ◽  
V. S. Osipchik ◽  
R. V. Kurbanova ◽  
...  
Keyword(s):  
Injection Molding ◽  
Butyl Rubber ◽  
Technological Characteristics
Sign in / Sign up

Export Citation Format

Share Document