The mold cost estimation calculator for plastic injection mold manufacturing

Kamalrudin, Massila; Mohan, Sharmini; Jun, Liew Pay; Abdullah, Rosmiza Wahida

doi:10.1109/itsim.2008.4631859

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…There are several advantages of injection moulding process such as it can produce complex shape with good dimensional ability and short cycle operation time as compared to others polymer processing. However, in the injection moulding process four factors always influence the quality of plastic parts; machine parameters [1], plastics materials [2], mould design [3] and machine operators [4,5].…”

Section: Introductionmentioning

confidence: 99%

Warpage Analysis of Different Number Cooling Channels for Dumbbell Plastic Part in Injection Moulding

Amran

Salmah

Izamshah

et al. 2015

AMM

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Warpage deflection is one of the common pitfalls in plastic injection moulding which is always affected the quality and accuracy of the plastic products. It occurs due to the influences of mould temperature during injection moulding process and it is related to the number of cooling system existed in the mould. Therefore, this paper studies the effect of cooling channels on warpage of dumbbell plastic part having different number of cooling channel using Moldflow software. Warpage analysis was run using four and eight cooling channels. Parameters involved in this study are injection time, packing time, melt temperature and mould temperature. The result of warpage from simulation analysis was projected on the graphic having different colour which is presented the actual value of warpage. It is found from warpage simulation result that the maximum warpage for four cooling channels is 1.283mm and the maximum warpage for eight cooling channels is 1.280mm. It shows that the increasing of the number of cooling channel from four to eight channels in the injection mould reduces the warpage deflection about 0.2%. Thus, the result shows that the number of cooling system in the mould plays an important role on the quality of plastic part during injection moulding process.

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Section: Introductionmentioning

confidence: 99%

Warpage Analysis of Different Number Cooling Channels for Dumbbell Plastic Part in Injection Moulding

Amran

Salmah

Izamshah

et al. 2015

AMM

View full text Add to dashboard Cite

show abstract

“…Uneven mould temperature could cause defects such as warpage, weld line, sink marks and shrinkage. Researchers have identified the causes of the plastics defects such as machine process parameters [4], injection mould attributes [5], plastics materials [6], and machine operators [7]. The well known mould conditions, such as core and cavity temperature, can affect plastic part quality in terms of temperature difference between the mould and injected plastic.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Coolant Medium on Warpage Deflection Using Moldflow Insight Analysis

Ali

Salmah

Abdullah

et al. 2015

AMM

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The effect of mould temperature on warpage using water and oil as coolant fluid was studied using flow software analysis. Mould temperature was controlled using two types of coolants; where cold mould was controlled by water and hot mould was controlled by oil. The simulation analysis was performed using flow software analysis Moldflow Plastics Insight (MPI). Taguchi method was used to design the planning matrix and to find the optimum levels of input variables. Then, to find the percentage contribution of input variables on output variables, analysis of variance (ANOVA) was used. It is found that mould temperature controlled by water shows less warpage analysis compared to oil. The minimum and maximum percentage of warpage analysis between cold mould and hot mould are 3.1% and 7.1% respectively. In addition, ANOVA analysis shows that the most significant parameters affected the warpage analysis for both moulds using oil and water are melt temperature (255°C) followed by mould temperature (water 15°C and oil 70°C) and cooling time (water 8s and oil 6s). Thus, it shows that coolant medium used in mould cooling system contributes the quality of plastic parts.

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The mold cost estimation calculator for plastic injection mold manufacturing

Cited by 2 publications

References 6 publications

Warpage Analysis of Different Number Cooling Channels for Dumbbell Plastic Part in Injection Moulding

Warpage Analysis of Different Number Cooling Channels for Dumbbell Plastic Part in Injection Moulding

Effect of Different Coolant Medium on Warpage Deflection Using Moldflow Insight Analysis

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