A 3D study on the effect of gate location on the cooling of polymer by injection molding

Hassan, Hamdy; Régnier, Nicolas; Defaye, G.

doi:10.1016/j.ijheatfluidflow.2009.06.005

Cited by 20 publications

(9 citation statements)

References 19 publications

(19 reference statements)

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“…Hassan et al [6] examined the effect of the runner inlet point on shrinkage, warpage and residual stress in the chilling of the polymer material. Kovacs and Siklo [7] developed a new measuring method by making a plastic sample part molding in V type different from the currently undergoing studies.…”

Section: (365)mentioning

confidence: 99%

Forming Behavior of ABS and PC Polymers under Plastic Injection Molding Process

Kamber¹

2018

Acta Phys. Pol. A

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Remote control devices are tools that are used by people in their daily life. Dimensional instabilities on remote control results in many disadvantages in production, assembly phases, and ergonomic problem in use. Therefore in this study, the effects of various parameters including cold and hot runner system, process temperature on important dimensional measurements such as shrinkage and warpage is investigated. To manufacture remote control covers, two different plastic materials, acrylonitrile butadiene styrene (ABS) and polycarbonate (PC), are used. Thus the forming response of these materials is also investigated and compared in this study. Plastic injection process of these two materials to produce remote control is simulated by utilizing commercially available computer aided engineering software. The experimental findings were compared with the numerical results to compare shrinkage percentage and warpage ratio. Remote control cover part was produced by using cold runner system and hot runner system at constant injection pressure and different process temperatures. The results showed that as process temperature increases, volumetric shrinkage and warpage continuously increase for both ABS and PC raw material. Besides, cold runner system almost always generates much larger percentages of shrinkage and much larger warpage as compared with hot runner system.

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Section: (365)mentioning

confidence: 99%

Forming Behavior of ABS and PC Polymers under Plastic Injection Molding Process

Kamber¹

2018

Acta Phys. Pol. A

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“…The injection gate location plays a crucial role in determining the temperature distribution within the final product in injection molding processes. Proper optimization of the gate location is essential for achieving uniform cooling and, consequently, improving overall product quality [1].…”

Section: Introductionmentioning

confidence: 99%

A Multifaceted Approach to Injection Mold Design, Analysis and Manufacturing

Krishnappa,

Mallaradhya

et al. 2024

Preprint

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The injection molding procedure primarily involves a sequential process that converts plastic pellets into a molded item. Through a repetitive cycle, identical components are created by melting resin pellets or powder and then injecting the resulting polymer melt into a hollow mold cavity using high pressure. Injection molding has posed challenges for numerous manufacturers and researchers aiming to create cost-effective products that meet specified criteria. This research explores the holistic process of designing, analyzing, and manufacturing of an injection mold for an air filter box bottom cover, focusing on cost-effectiveness while addressing common challenges in achieving high-quality parts. For the production of this part, a material called Poly Propylene talc filled [PPTF] is employed due to its enhanced stiffness, making it appropriate for this application where dimensional stability is crucial. Through moldflow simulation, potential issues like uneven flow, problematic weld lines, and air traps are identified. Based on these findings, the mold design is optimized by strategically placing gates, controlling weld line position, eliminating gas traps, equalizing pressure drops, and reducing stress levels. The optimized parameters are then implemented in manufacturing, leading to improved part quality through reduced defects and better dimensional accuracy. Additionally, the research helps minimize production costs by reducing rejections and rework. This, multifaceted approach not only streamlines the process but also contributes to the efficient and cost-effective production of high-quality air filter box bottom covers.

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“…There are researches on the influence of gate location and injection molding parameters on the injection molding process such as using a 3D method to demonstrate the effect of gate location on the cooling of plastics material in injection molding [10], finding efficient frontier of process parameters to apply for injection molding of a digital camera [11], using a genetic algorithm method to minimize the defect of weld line in injection molding product [12], developing a neutral network for surface defect prediction of polypropylene product by injection molding [13], using an analysis of short shot possibility in the plastic injection molding [14], introducing a new gate system geometry in injection molding to reduce the defects of plastic parts [15]. This paper demonstrates a numerical simulation method to find an optimal gate location for the plastic injection moulding to reduce defects and enhance the product quality.…”

Section: Introductionmentioning

confidence: 99%

Nghiên Cứu Tối Ưu Hóa Vị Trí Cổng Phun Cho Khuôn Ép Nhựa Để Nâng Cao Chất Lượng Sản Phẩm

Long¹,

Dũng²,

Sơn³

et al. 2022

TNUJST

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Cổng phun là vị trí dòng nhựa nóng chảy được phun trực tiếp vào lòng khuôn để tạo hình sản phẩm. Vị trí cổng phun có ảnh hưởng lớn đến khả năng điền đầy vật liệu trong lòng khuôn và chất lượng sản phẩm vì có liên quan việc đến định hướng dòng chảy trong lòng khuôn. Các khuyết tật không mong muốn có thể tạo ra trong quá trình ép phun liên quan đến việc lựa chọn vị trí cổng phun như: đường hàn, cong vênh, và hiện tượng co ngót. Do đó vị trí cổng phun là một trong những tiêu chí quan trọng nhất để điều khiển chất lượng của sản phẩm ép phun. Bài báo trình bày một phương pháp mô phỏng số hóa để tìm ra vị trí cổng phun tối ưu trong thiết kế khuôn ép nhựa để làm giảm các khuyết tật và nâng cao chất lượng sản phẩm trong quá trình ép phun các sản phẩm nhựa. Các khuyết tật trên sản phẩm nhựa được phân tích và giảm thiểu thông qua việc sử dụng công cụ mô phỏng số có sự trợ giúp của máy tính. Thông qua phương pháp này, vị trí cổng phun tối ưu được lựa chọn, các khuyết tật trên sản phẩm dễ dàng được phát hiện và kiểm soát, chất lượng sản phẩm ép phun được cải thiện.

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A 3D study on the effect of gate location on the cooling of polymer by injection molding

Cited by 20 publications

References 19 publications

Forming Behavior of ABS and PC Polymers under Plastic Injection Molding Process

Forming Behavior of ABS and PC Polymers under Plastic Injection Molding Process

A Multifaceted Approach to Injection Mold Design, Analysis and Manufacturing

Nghiên Cứu Tối Ưu Hóa Vị Trí Cổng Phun Cho Khuôn Ép Nhựa Để Nâng Cao Chất Lượng Sản Phẩm

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