Design and simulation-based optimization of cooling channels for plastic injection mold

Park, Hong Seok; Dang, Xiaohong

doi:10.5772/32730

Cited by 19 publications

(12 citation statements)

References 42 publications

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“…Similarly, Park and Dang 13 in their study suggests that runner and cooling channel geometry can improve the¯nal quality of products. One speci¯c study was found for minimizing the warpage in thin shell plastic parts by employing the response surface methodology and genetic algorithm (GA).…”

Section: Introductionmentioning

confidence: 83%

Warpage and Shrinkage Analysis and Optimization of Rapid Tooling Molded thin Wall Component Using Modified Particle Swarm Algorithm

Kumar

Singh

2019

J. Adv. Manuf. Syst.

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This paper presents a systematic methodology to determine optimal injection molding conditions for minimum warpage and shrinkage in a thin wall relay part using modified particle swarm optimization algorithm (MPSO). Polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) were injected in a thin wall relay component for different processing parameters: melt temperature, packing pressure and packing time. Further, Taguchi’s L9 (3[Formula: see text] orthogonal array is used for conducting simulation analysis to consider the interaction effects of the above parameters. A predictive mathematical model for shrinkage and warpage is developed in terms of the above process parameters using regression analysis. ANOVA analysis is performed to establish statistical significance within the injection molding parameters. The analytical model is further optimized using a newly developed MPSO algorithm and the process parameters values are predicted for minimizing shrinkage and warpage. The predicted values of shrinkage and warpage using MPSO algorithm are improved by approximately 30% as compared to the initial simulation values and comparable to previous literature results.

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Section: Introductionmentioning

confidence: 83%

Warpage and Shrinkage Analysis and Optimization of Rapid Tooling Molded thin Wall Component Using Modified Particle Swarm Algorithm

Kumar

Singh

2019

J. Adv. Manuf. Syst.

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“…According to Park and Dang [17] , when the heat balance is established the heat flux supplied to the mould and the heat flux removed from the mould are in equilibrium. The heat balance is expressed by Equation 1.…”

Section: Thermal Analysismentioning

confidence: 99%

“…Turbulent flow enables the heat to be transferred more effectively. According to Park and Dang [17] , for linear channels it is not appropriate use channels in series circuits in the following situations:…”

Section: Conformal Cooling In Series Channelsmentioning

confidence: 99%

“…As a result, cooling of the mould may not be uniform with a parallel cooling channel configuration, but a balanced parallel circuit provides uniform heat extraction. However, it is suggested only to use a parallel circuit if the model has one of the following circumstances [17] : ▪ The pressure drop over a series circuit is too high to be realistic.…”

Section: Conformal Cooling In Parallel Channelsmentioning

confidence: 99%

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Design of conformal cooling for plastic injection moulding by heat transfer simulation

et al. 2015

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SbstractThe cooling channels of a mold for plastic injection have to be as close as possible to the part geometry in order to ensure fast and homogeneous cooling. However, conventional methods to manufacture cooling channels (drilling) can only produce linear holes. Selective laser melting (SLM) is an additive manufacturing technique capable to manufacture complex cooling channels (known as conformal cooling). Nevertheless, because of the high costs of SLM the benefits of conformal collings are still not clear. The current work investigates two designs of conformal coolings: i) parallel circuit; ii) serial circuit. Both coolings are evaluated against to traditional cooling circuits (linear channels) by CAE simulation to produce parts of polypropylene. The results show that if the conformal cooling is not properly designed it cannot provide reasonable results. The deformation of the product can be reduced significantly after injection but the cycle time reduced not more than 6%.

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“…An appropriate cooling channels design can considerably reduce the cooling time and increase the productivity of the molding process. On the other hand, an efficient cooling system which achieves a uniform temperature distribution can minimize the undesired defects that influence the quality of molded part such as hot spots, sink marks, differential shrinkage, and thermal residual stress, so conventional straight drilled cooling system helps to reduce the cycle time of production [13]. The velocity of the cooling water must be high enough to maintain the turbulent flow for cooling the mould.…”

Section: Nr/br Blend Materialsmentioning

confidence: 99%

Conceptual Design of Transfer Mould Tool for Rubber Bumper Spring

.¹

2014

IJRET

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This paper presents the conceptual design of transfer mould for rubber bumper spring, which is used as housing for auto parts. The fundamental aim of the designer is to achieve balance between productivity and design, by optimizing the design, process and manufacturing parameters, which results in the final cost reduction of the mouldings without compromising the quality of the product. The various parameters like processing temperature, pressure, moulding material, parting line selection, mould cooling, ejection system, etc. affects the design of mould and its functions with variation in cost and quality for producing optimized quality mouldings. By varying some of the above said parameters an effort is made to attain a cost effective conceptual design. The suggested material for rubber bumper spring is NR/BR (Natural & Polybutadiene Rubber) blend. Designing of mould is carried out by using computer aided designing software solid works 13.

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Design and simulation-based optimization of cooling channels for plastic injection mold

Cited by 19 publications

References 42 publications

Warpage and Shrinkage Analysis and Optimization of Rapid Tooling Molded thin Wall Component Using Modified Particle Swarm Algorithm

Warpage and Shrinkage Analysis and Optimization of Rapid Tooling Molded thin Wall Component Using Modified Particle Swarm Algorithm

Design of conformal cooling for plastic injection moulding by heat transfer simulation

Conceptual Design of Transfer Mould Tool for Rubber Bumper Spring

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