Injection molding analysis of a needle cover — Optimum filling for gate location design

2012 ◽  
Vol 13 (9) ◽  
pp. 1185-1189 ◽  
Author(s):  
Du Hwan Chun ◽  
Byoung Hee You ◽  
Dong Joo Song
Keyword(s):  
Injection Molding ◽  
Gate Location ◽  
Location Design

Gate location optimization scheme for plastic injection molding

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Ming Zhai ◽  
Yeecheong Lam ◽  
Chikit Au
Keyword(s):  
Injection Molding ◽  
Objective Function ◽  
Flow Path ◽  
Computationally Efficient ◽  
Gate Location ◽  
Adjacent Node ◽  
Filling Time ◽  
Efficient Scheme ◽  
Balanced Flow ◽  
Search Routine

AbstractGate location of injection molding is vital to achieve high quality plastic part. The determination of gate location is an important issue in mold design. A computationally efficient scheme based on flow path is proposed to locate the optimum gate for achieving balanced flow. The range of filling time is employed as objective function. Comparisons were made between the flow path search scheme and the existing adjacent node evaluation scheme, and between the objective function of the range of filling time and the existing standard deviation of filling time. The two examples investigated indicated that the search routine based on the concept of flow path is more efficient computationally and the range of filling time is a better objective function to reflect the uniformity of fill.

Gate Location Optimization in Injection Molding Processing

2000 ◽  
Author(s):  
Baojiu Lin ◽  
Won Gil Ryim
Keyword(s):  
Injection Molding ◽  
Simulation Software ◽  
Innovative Technology ◽  
Software Module ◽  
Location Optimization ◽  
Gate Location ◽  
Part Quality ◽  
Design Cycle ◽  
Injection Molding Simulation ◽  
Complex Models

Abstract Improvements in part quality and cost reduction are the primary objectives of CAE use in the injection molding industry. Engineers use advanced injection molding simulation software to analyze and verify their part designs. Traditionally, engineers have had to rerun simulations to verify the effects of changes in gate locations. For complex models, simulations are very time consuming. To reduce the design cycle time, a Design Optimization Module is developed by C-MOLD. One of the functions of this new software module is to automatically select optimal gate locations. This innovative technology is the result of close R&D collaboration between C-MOLD and LG-PRC in Korea. An overview of gate location optimization technology is presented in this paper, and several examples are also presented as illustration.

Determination of the Optimal Locations for Injection Molding Gates with Higher Order Response Surface Approximations

2013 ◽  
Vol 479-480 ◽  
pp. 126-130 ◽  
Author(s):  
Kun Nan Chen ◽  
Wen Der Ueng
Keyword(s):  
Injection Molding ◽  
Pressure Distribution ◽  
Response Surface ◽  
Injection Pressure ◽  
Optimization Method ◽  
Higher Order ◽  
Programming Technique ◽  
Location Optimization ◽  
Gate Location ◽  
Response Surface Approximations

This paper proposed a gate location optimization scheme to minimize the maximum injection pressure in plastic injection molding. The method utilized a series of higher order response surface approximations (RSA) to model the maximum injection pressure distribution with respect to gate locations, and the global minimum of these response surface models were subsequently sought by a global optimization method based on a multi-start sequential quadratic programming technique. The design points for RSA were evaluated by the finite element method. After a sequence of repetitions of RSA and optimization, the converged minimizer would represent the optimal gate location. A rectangular plate with two segments of different thicknesses was selected to demonstrate the effectiveness of the procedure. The variation of the thicknesses causes the optimal gate location to deviate from the center and induce multiple valleys in the maximum injection pressure distribution, which is ideal for the application of the higher order RSA and a global searching technique.

Virtual Product Development and Reliability Design of Camera Cover

2011 ◽  
Vol 460-461 ◽  
pp. 40-43
Author(s):  
Wei Hua Kuang ◽  
Li Si Chen
Keyword(s):  
Numerical Simulation ◽  
Optimal Design ◽  
Injection Molding ◽  
Product Development ◽  
Reliability Design ◽  
Gate Location ◽  
Injection Process ◽  
Cad Cam ◽  
Virtual Product Development ◽  
Virtual Product

The paper finished the design of injection molding by UG MoldWizard module, and realized numerical simulation and analysis of injection process by MoldFlow software. Best gate location was obtained. Fill time was deeply studied. Though the mold designing process, it completed the CAD/CAM/CAE integration of the injection molding, and achieved the optimal design of the mold. NC machining of the mold core was programmed by UG NX software. CAD/CAM/CAE greatly improved the development efficient of the mold.

Complicated Model Establishment and Second Development for Enterprises by MoldWizard

2010 ◽  
Vol 97-101 ◽  
pp. 3451-3454
Author(s):  
Wei Hua Kuang ◽  
Biao Biao Chen ◽  
Yu Cheng Lin
Keyword(s):  
Injection Molding ◽  
Cooling System ◽  
Design Flow ◽  
Location Analysis ◽  
Mold Design ◽  
Gating System ◽  
Second Development ◽  
Gate Location ◽  
Complicated Model

Injection molding is among the most widely used techniques for thermoplastics, and many complicated models are used in the mold enterprises. In the paper, the mold design flow by UG MoldWizard was analyzed. A mold for hair drier cover was successfully developed. How to search parting lines, create/edit parting surfaces, extract regions and create cavity and core were researched deeply. Best gate location analysis was studied by MoldFlow software, and a multi-cavity mold was designed. Angled-lift splits were developed to form the concave grooves. Lastly, the gating system and the cooling system were designed. It proved that MoldWizard can obviously improve the drafting efficiency and quality.

The Influence of the Weld Line and the Selection of Mold Gate Location

2016 ◽  
Vol 693 ◽  
pp. 952-958
Author(s):  
Guo Yi Guo
Keyword(s):  
Injection Molding ◽  
Great Influence ◽  
Weld Line ◽  
Simulation Software ◽  
Location Selection ◽  
Gate Location ◽  
Products Analysis ◽  
Important Position ◽  
The Impact

Through injection molding simulation software and examples of injection,This paper analyzes the causes of the weld line when injection molding products, the impact on the quality of products, analysis of the injection mold gate location selection problems and defects produced by principle, think weld line has a great influence on the quality of injection molding, on this basis, put forward in view of the weld line, the influence of the mold gate location selection method in the practical work of is: reasonable choose the location of the gate, to control the degree of weld line, as far as possible to reduce the number of the weld line, or make them produce not important position in the mold. Etc.

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