Finite element analysis on the injection molding and productivity of conformal cooling channel

2011 ◽  
Vol 16 (2) ◽  
pp. 231-235 ◽  
Author(s):  
Zhong Zheng ◽  
Hai-ou Zhang ◽  
Gui-lan Wang ◽  
Ying-ping Qian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Injection Molding ◽  
Cooling Channel ◽  
Conformal Cooling Channel ◽  
Element Analysis ◽  
Conformal Cooling

scholarly journals Improving Cooling Performance of Injection Molding Tool with Conformal Cooling Channel by Adding Hybrid Fillers

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1224
Author(s):  
Chil-Chyuan Kuo ◽  
Wei-Hua Chen
Keyword(s):  
Thermal Conductivity ◽  
Injection Molding ◽  
Cooling Time ◽  
Performance Ratio ◽  
Cooling Efficiency ◽  
Cooling Channel ◽  
Conformal Cooling Channel ◽  
Conformal Cooling ◽  
Fused Deposition ◽  
Silicone Rubber Mold

Silicone rubber mold (SRM) is capable of reducing the cost and time in a new product development phase and has many applications for the pilot runs. Unfortunately, the SRM after injection molding has a poor cooling efficiency due to its low thermal conductivity. To improve the cooling efficiency, the thermal conductivity of the SRM was improved by adding fillers into the SRM. An optimal recipe for fabricating a high cooling efficiency low-pressure injection mold with conformal cooling channel fabricated by fused deposition modeling technology was proposed and implemented. This study proposes a recipe combining 52.6 wt.% aluminum powder, 5.3 wt.% graphite powder, and 42.1 wt.% liquid silicon rubber can be used to make SRM with excellent cooling efficiency. The price–performance ratio of this SRM made by the proposed recipe is around 55. The thermal conductivity of the SRM made by the proposed recipe can be increased by up to 77.6% compared with convention SRM. In addition, the actual cooling time of the injection molded product can be shortened up to 69.1% compared with the conventional SRM. The actual cooling time obtained by the experiment is in good agreement with the simulation results with the relative error rate about 20%.

Optimum Cooling Channels Design and Thermal Analysis of an Injection Moulded Plastic Part Mould

2007 ◽  
Vol 561-565 ◽  
pp. 1999-2002 ◽  
Author(s):  
Abul B.M. Saifullah ◽  
Syed H. Masood
Keyword(s):  
Cooling Time ◽  
Free Form ◽  
Cooling Channel ◽  
Channel Design ◽  
Conformal Cooling Channel ◽  
Plastic Part ◽  
Element Analysis ◽  
Conformal Cooling ◽  
Cooling Channels ◽  
Conformal Cooling Channels

Cooling channel design is important in mould designs to achieve shorter cycles, dimensional stability and reduced part stresses. Traditionally, cooling channels have been machined into mould components to avoid interference with the ejection system, coring, cavity and other mould details. Over the years straight drilled cooling channels have given away, in part, to conformal cooling technique often using free form fabrication techniques. This paper presents a study of optimised mould design with conformal cooling channel using finite element analysis. Various configurations of conformal cooling channels have been developed. The part cooling time using the conformal cooling channels and the straight cooling channels in the mould are computed using the Pro/Mechanica Thermal FEA software. Results are presented based on temperature distribution and cooling time using steady state and transient analysis conditions. The results show a reduction in cycle time for the plastic part with conformal cooling channel design.

OPTIMIZATION OF INJECTION MOLDING PARAMETERS FOR LED LAMPSHADE

2013 ◽  
Vol 37 (3) ◽  
pp. 313-323 ◽  
Author(s):  
Kingsun Lee ◽  
Jui-Chang Lin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Injection Molding ◽  
Taguchi Method ◽  
Design Of Experiments ◽  
Light Emitting Diodes ◽  
Injection Mold ◽  
Element Analysis ◽  
Light Emitting ◽  
Injection Parameters

The unibody of LED (light-emitting diodes) lampshades is fabricated by injection mold; the forming technique is complicated, especially for multi-cavity molds. This study applies a finite element analysis to explore the influences of the shrinkage of LED lampshades. The effect of selected injection parameters and their levels on shrinkage size, and the subsequent design of experiments were accomplished using the Taguchi method. The results were confirmed by experiments, which indicated that the selected injection parameters effectively reduce the shrinkage. The error between optimal estimated value and verified value is within 3.82%.

Finite Element Analysis and Topology Optimization Design for Motional Board of Injection Molding Machine

2014 ◽  
Vol 607 ◽  
pp. 573-576
Author(s):  
En Guang Zhang ◽  
Li Wang ◽  
Wen Ju Shan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Topology Optimization ◽  
Injection Molding ◽  
Optimization Design ◽  
Structure Design ◽  
Molding Machine ◽  
Element Analysis ◽  
Injection Molding Machine ◽  
Load Carrying

The structure and the load-carrying capability of the front board of injection molding machine are more complex. The error of the approximation algorithm employed in engineering is larger so that the board may become invalid in the process of using, The finite element analysis can obtain the stress distribution in the parts so as to improve the accuracy of calculation and the quality of design; through The topology optimization analysis will take the initiative to find the optimal plan, which provides the theoretical basis for the improvement of the load-carrying capability and the structure design of board. This paper have conducted a parametric design, finite element analysis and the topology optimization design for a motional board of the injection molding machine using “Advanced simulation” of NX8.0, and get a quantitative conclusion of that the motional board volume is reduced and its stiffness is significantly enhanced.

Optimal Design for Injection Molding Process Using Design of Experiments and Finite Element Analysis

2000 ◽  
Author(s):  
K. Park ◽  
J. H. Ahn ◽  
S. R. Choi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Injection Molding ◽  
Design Of Experiments ◽  
Process Parameters ◽  
Injection Molding Process ◽  
Mold Design ◽  
Molding Process ◽  
Element Analysis

Abstract The present work concerns optimal design for the injection molding process of a deflection yoke (coil separator). The optimal design for the injection molding process is developed using design of experiments and finite element analysis. Two design of experiments approaches are applied such as: the design of experiment for mold design and the design of experiments for determination of process parameters. Finite element analyses have been carried out as a design of experiments for mold design: runner system and cooling channel. In order to determine optimal process parameters, experiments have been performed for various process conditions with the design of experiments scheduling.

scholarly journals COOLING UNIFORMITY ANALYSIS of INJECTION MOLDING PLASTIC PRODUCTS WITH COOLING SYSTEM VARIATIONS USING CFD METHOD

2020 ◽  
Vol 25 (2) ◽  
Author(s):  
Angger Bagus Prasetiyo
Keyword(s):  
Injection Molding ◽  
Cooling System ◽  
Maximum Temperature ◽  
Mold Material ◽  
Cooling Channel ◽  
Conformal Cooling Channel ◽  
Channel System ◽  
Conformal Cooling ◽  
Cfd Method ◽  
Plastic Products

The cooling system design selection plays an important role in a product cooling process in injection molding. This study presents an analysis of the uniform cooling of plastic products with a variety of cooling systems using the CFD method. Good cooling design, able to uniform the temperature drop in plastic products. There are two types of cooling system variations used, namely the conformal cooling channel system and the straight cooling channel system using the volume of fluid model with the k-epsilon turbulent model. The mold material used is steel and the plastic material used is polypropylene. The simulation results using the CFD method show that the variations in the conformal cooling channel system resulting from a decrease in temperature for each product are more uniform, as evidenced by the color of the contour experiencing light green degradation on all sides of the product, the maximum temperature value is 422, 44 ° K and the minimum temperature value is 338. , 00 ° K, while the straight cooling channel system has a non-uniform temperature reduction, as evidenced by the value with the contour color that is still orange, the maximum temperature value is 473.11 ° K.

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