scholarly journals Efficient cooling of hot spots in injection molding. A biomimetic cooling channel versus a heat-conductive mold material and a heat conductive plastics

2018 ◽  
Vol 59 (s2) ◽  
pp. E180-E188 ◽  
Author(s):  
Gerald R. Berger ◽  
David Zorn ◽  
Walter Friesenbichler ◽  
Franz Bevc ◽  
Christian J. Bodor
Keyword(s):  
Injection Molding ◽  
Hot Spots ◽  
Mold Material ◽  
Cooling Channel ◽  
Conductive Plastics

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.

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%.

scholarly journals Cooling channel optimization for injection molding

2007 ◽  
Author(s):  
N. Pirc ◽  
F. Bugarin ◽  
F. M. Schmidt ◽  
M. Mongeau
Keyword(s):  
Injection Molding ◽  
Cooling Channel
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