A Novel Design Method of an Evolutionary Mold Cooling Channel Using Biomimetic Engineering

Choi, Jae-Hun; Gim, Jinsu; Rhee, Byong-Duk

doi:10.3390/polym15040798

Cited by 9 publications

(5 citation statements)

References 22 publications

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“…The cooling goal of the cooling channel is to make the plastic parts cooled evenly, based on this idea, many researchers get inspiration from nature and daily life, apply it to the design of conformal cooling channel through complex algorithms, and get good results [24][25][26][27][28][29] . According to the growth mechanism of plant roots, the product is divided into smaller domains by CVD algorithm and the cooling channels are made by connecting the thermal centers with the binary branching law [24] .…”

Section: Related Workmentioning

confidence: 99%

“…According to the growth mechanism of plant roots, the product is divided into smaller domains by CVD algorithm and the cooling channels are made by connecting the thermal centers with the binary branching law [24] . Furthermore, in [25], the authors proposed a design methodology for a conformal cooling channel minimizing the stagnation of cooling water by mimicking the growth of plant roots. The binary branching rule was used for the cooling channel so that two child cooling channels were differentiated from one parent cooling channel.…”

Section: Related Workmentioning

confidence: 99%

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Research on Automatic Generation Technology of Cooling Channels for Injection Mold of Automotive Interior Door Panel

Wang,

2024

Preprint

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The automotive interior door panel is an important injection molded part in automotive interiors, and a good cooling system is crucial to ensure its molding quality. In fact, due to the complex structure of the automotive interior door panel mold, designing hundreds of cooling channels inside it is often a very tedious and time-consuming task. For a long time, designers can only rely on basic modeling tools and build cooling channels through a large number of interactive operations, which will require a lot of time and effort. To solve this problem, this paper proposes an automatic generation method for cooling channels from a practical perspective based on the basic structural characteristics of cooling channels and the basic rules of mold cooling system design. The basic idea is to first offset adjacent boundary lines on the side of the mold core, and generate a series of scan lines starting from the intersection of the offset lines; Then generate channel entities with specified channel diameters along the scanning line, and perform interference checks on all generated channels; Finally, optimize the positions of all channels and remove unsuitable ones. Experimental results show that this method is simple and practical, and can quickly generate cooling channels that meet the requirements, greatly saving design time, reducing design errors, and improving design efficiency.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Research on Automatic Generation Technology of Cooling Channels for Injection Mold of Automotive Interior Door Panel

Wang,

2024

Preprint

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“…It was found that CCC shows an average temperature peak at 58.78 °C. Choi et al [ 10 ] used the biomimetic engineering method to design the CCC. The results showed that the pressure loss was reduced by about 10 times.…”

Section: Introductionmentioning

confidence: 99%

“…Minh et al [9] optimized the cooling channel in injection molds using Taguchi-integrated principal component analysis. It was found that CCC shows an average temperature peak at 58.78 • C. Choi et al [10] used the biomimetic engineering method to design the CCC. The results showed that the pressure loss was reduced by about 10 times.…”

Section: Introductionmentioning

confidence: 99%

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Kuo,

Lin,

et al. 2024

Polymers

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A conformal cooling channel (CCC) follows the mold core or cavity profile to carry out uniform cooling in the cooling stage. However, the significant pressure drop along the cooling channels is a distinct disadvantage of the CCC. In this study, an innovative waterfall cooling channel (WCC) was proposed and implemented. The WCC cools the injected products via surface contact, replacing the conventional line contact to cool the injected products. The WCC was optimized using numerical simulation software. Silicone rubber molds with two kinds of cooling channels were designed and implemented. The cooling time of the molded part was evaluated using a low-pressure wax injection molding machine. The experimental results of the cooling time of the molded part were compared with the simulation results from numerical simulation software. The results showed that the optimal mesh element count was about 1,550,000 with a mesh size of 1 mm. The simulation software predicted the filling time of the water cup injection-molded product to be approximately 2.008 s. The cooling efficiency for a silicone rubber mold with a WCC is better than that of the silicone rubber mold with a CCC since the core and cavity cooling efficiency is close to 50%. The pressure drop of the WCC is smaller than that of the CCC, which reduces the pressure drop by about 56%. Taking a water cup with a mouth diameter of 70 mm, a height of 60 mm, and a thickness of 2 mm as an example, the experimental results confirmed that the use of the WCC can save the cooling time of the product by about 265 s compared with the CCC. This shows how a WCC can increase cooling efficiency by approximately 17.47%.

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“…The results indicated a 9.26% reduction in warpage for the cup-shaped injection-molded part when CC was used, as opposed to the conventional cooling channel. Minh et al [9] optimized injection mold cooling channels using Taguchi-integrated principal component analysis, revealing that CC resulted in an average temperature peaking at 58.78 • C. In the biomimetic engineering approach by Choi et al [10], CC design led to a remarkable ten-fold reduction in pressure loss and approximately 46% improvement in temperature deviation compared to conventional cooling channels. Torres-Alba et al [11] proposed an innovative CC system with high resistance to warping, demonstrating a 66% reduction in cycle time and an 81.88% decrease in residual stress.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Cooling Efficiency of Aluminum-Filled Epoxy Resin Rapid Tool by Changing Inner Surface Roughness of Cooling Channels

Kuo,

Chen,

Lin

et al. 2024

Polymers

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In low-pressure wax injection molding, cooling time refers to the period during which the molten plastic inside the mold solidifies and cools down to a temperature where it can be safely ejected without deformation. However, cooling efficiency for the mass production of injection-molded wax patterns is crucial. This work aims to investigate the impact of varying surface roughness on the inner walls of the cooling channel on the cooling efficiency of an aluminum-filled epoxy resin rapid tool. It was found that the cooling time for the injection-molded products can be determined by the surface roughness according to the proposed prediction equation. Employing fiber laser processing on high-speed steel rods allows for the creation of microstructures with different surface roughness levels. Results demonstrate a clear link between the surface roughness of cooling channel walls and cooling time for molded wax patterns. Employing an aluminum-filled epoxy resin rapid tool with a surface roughness of 4.9 µm for low-pressure wax injection molding can save time, with a cooling efficiency improvement of approximately 34%. Utilizing an aluminum-filled epoxy resin rapid tool with a surface roughness of 4.9 µm on the inner walls of the cooling channel can save the cooling time by up to approximately 60%. These findings underscore the significant role of cooling channel surface roughness in optimizing injection molding processes for enhanced efficiency.

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A Novel Design Method of an Evolutionary Mold Cooling Channel Using Biomimetic Engineering

Cited by 9 publications

References 22 publications

Research on Automatic Generation Technology of Cooling Channels for Injection Mold of Automotive Interior Door Panel

Research on Automatic Generation Technology of Cooling Channels for Injection Mold of Automotive Interior Door Panel

Development of a Silicone Rubber Mold with an Innovative Waterfall Cooling Channel

Enhancing the Cooling Efficiency of Aluminum-Filled Epoxy Resin Rapid Tool by Changing Inner Surface Roughness of Cooling Channels

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