The Fast Design and the Optimization of the Injection Mold Based on CAD and CAE Technology

2012 ◽  
Vol 430-432 ◽  
pp. 1352-1356
Author(s):  
Heng Tan ◽  
Ze Wang ◽  
Guo Hong Dai ◽  
Xiu Xiang Chen ◽  
Jian Fu Zhu
Keyword(s):  
Injection Molding ◽  
Reverse Engineering ◽  
Characteristic Curve ◽  
3D Models ◽  
Mold Design ◽  
Injection Mold ◽  
Plastic Model ◽  
Cloud Data ◽  
Engineering Software ◽  
Cae Technology

Using the reverse engineering software “Imageware”, the kakou points cloud data were processed, the characteristic curve grids were divided and the curve surfaces were reconstructed in the paper. Then the reconstructed plastic model of the kakou was inputed in UG. With the help of the repair functions for UG software, the incontinuous curve surfaces were sew up, then the STL style of the kakou was saved. Using Mold Wizards of the UG, the assemble model of the mold was established, the parting surfaces were designed, the 3D models of the mold parts were acquired. With the help of Moldflow, the injection molding of the kakou was simulated and analyzed. According to the results of simulation, the structures of mold and the technology parameters were optimized .The mold design was changed digital, virtual and modern design from tradition design based on paper and experience.

The Optimal Design of Injection Mold Gate Based on CAE

2013 ◽  
Vol 690-693 ◽  
pp. 2772-2775
Author(s):  
Jian Wen Tang
Keyword(s):  
Optimal Design ◽  
Injection Molding ◽  
Traditional Method ◽  
Injection Molding Process ◽  
Mold Design ◽  
Injection Mold ◽  
Molding Process ◽  
Design And Manufacturing ◽  
The Cost ◽  
Cae Technology

In the injection molding process, CAE technology is used for detailed analysis of the designing of injection mold gate location and number, this method can optimize the pouring system, and change the traditional method which improves the mold structure by mold testing, so the cost of mold design and manufacturing can be reduced.

Optimal Layout and Sizing of Ejector Pins for Injection Mold Design

1998 ◽  
Author(s):  
Seongjoon Kwak ◽  
Kunwoo Lee
Keyword(s):  
Wavelet Transform ◽  
Injection Molding ◽  
Mold Design ◽  
Injection Mold ◽  
Optimal Layout ◽  
Rule Based ◽  
Rule Based System ◽  
Molded Part ◽  
Injection Mold Design ◽  
Local Stresses

Abstract Injection molding is the most prevalent technology used for processing thermoplastic polymers. At the end of the injection molding cycle, the plastic molded part should be ejected when the injection mold opens. Complex moldings with bosses, ribs, or other features are generally ejected by ejector pins because they are economical and easy to be installed. However, the ejector pins can cause high local stresses and strains in the molding at the stage of ejection leading to the part deformation and damage. This paper proposes a method to determine the layout and size of the ejector pins required to eject thermoplastic moldings with minimizing the part deformation and damage. The proposed method calculates the distribution of the necessary ejecting forces to overcome the friction between the part and its mold. Then, it transforms the ejecting forces into a certain number of representative forces by the wavelet transform. Finally, we can get the location and size of the ejector pins corresponding to the discrete ejecting forces with the help of a rule-based system. The proposed method helps an injection mold designer to systematically obtain an optimum ejector design.

The Application of Moldflow in Injection Mold Design of Mobile Phone Cover

2011 ◽  
Vol 228-229 ◽  
pp. 542-547
Author(s):  
Wen Jian Zhang ◽  
Qi Zhang
Keyword(s):  
Mobile Phone ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
Mold Design ◽  
Injection Mold ◽  
Three Dimensional Model ◽  
Molding Process ◽  
Injection Mold Design ◽  
Cae Technology

Based the CAE technology, the paper introduced the application of Moldflow Insight in injection mold design of mobile phone cover. First, we must preprocess the finite element model, including importing three-dimensional model, meshing, and process setting. And then, we can use preliminary simulation analysis to determine the number and location of the gate. Finally to filling, cooling, packing and warpage analysis for part which can help us to find the causes from warpage generated. By optimizing the molding process parameters, adjusting the dwell pressure and the dwell time we can get less warpage, which can meet the precision demand of parts, consequently, the result can provide gist for the mold designers to design and for the injection molding technologist to process parameter adjustment.

Imageware and Pro/E Based Reverse Engineering Techniques for Drawbar in Heavy-Duty Railway Freight Cars

2008 ◽  
Vol 392-394 ◽  
pp. 320-324 ◽  
Author(s):  
Bi Hong Lu ◽  
H.P. Zheng
Keyword(s):  
Reverse Engineering ◽  
High Reliability ◽  
Dynamic Performance ◽  
3D Models ◽  
Railway Vehicle ◽  
Innovative Design ◽  
Cloud Data ◽  
Data Alignment ◽  
Railway Freight ◽  
Measuring Machine

As a new for heavy-railway vehicle connecting device, drawbar can eliminate connective gap and improve dynamic performance of the train obviously as it is well interchangeable, simple structure, easy manufacture, convenient maintenance, mature technology, high reliability, and widely applied abroad. Through the research on reverse engineering of foreign drawbar, authors present data collecting method based on the coordinates measuring machine (CMM) and data preprocessing by Imageware software, which including noise points removal, data alignment, simplification, sorting and benchmark transformation. Converting points cloud data by Pro/E independent geometric module, 3D models based on features and constraints were reconstructed, which support the redesign of parts and their manufacturing analysis. The outcome of the paper provides effective ways in terms of drawbar techniques digesting and absorption, and also supports innovative design of new products.

Numerical Simulation and Balance Design of Rubber Injection Mold Gating System Based on POLYFLOW

2012 ◽  
Vol 501 ◽  
pp. 190-195
Author(s):  
Lian Shuai Chen ◽  
Hui Min Zhang ◽  
Jia Teng Niu
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Injection Velocity ◽  
Mold Design ◽  
Injection Mold ◽  
Gating System ◽  
Processing Parameter ◽  
Inlet Flow ◽  
Injection Mold Design ◽  
Runner Design

Rubber injection molding is applied in more and more applications in rubber production process. Design of gating system is the most important in rubber injection mold design. Poor runner design will lead to uneven injection velocity and pressure which affect the size and shape and the quality of the rubber products. This paper first adopted POLYFLOW numerical simulation. Three different inlet flow rates for multi-cavity mold were simulated and analyzed by POLYFLOW software in this paper. Non-equilibrium gating system was further optimized by the calculation method of Balanced Gate Value and numerical simulation. The best inlet flow rate and the best runner size were ultimately obtained. It was proven that Numerical simulation results are of great significance for rubber injection mold design and injection molding processing parameter selection.

Molding CAE Technology and its Application Research

2011 ◽  
Vol 201-203 ◽  
pp. 209-214
Author(s):  
Yan Feng Wang
Keyword(s):  
Molecular Orientation ◽  
Simulation Method ◽  
Mold Design ◽  
Injection Mold ◽  
Application Research ◽  
Cooling Process ◽  
Flow Process ◽  
Injection Mold Design ◽  
Injection Molding Cae ◽  
Cae Technology

In this paper, the study of numerical simulation method used in jet molding CAE major technology is carried out, including simulation of filling flow process, keeping the stress process, cooling process, warping deformation and molecular orientation and so on; also makes a system induced study on injection molding CAE successfully applied in the injection mold design.

Geometric Analysis of Pipeline Elbows Through Reverse Engineering and Their Associated Imperfections

2014 ◽  
Author(s):  
Muntaseer Kainat ◽  
Celal Cakiroglu ◽  
Samer Adeeb ◽  
J. J. Roger Cheng ◽  
Michael Martens
Keyword(s):  
Reverse Engineering ◽  
Wall Thickness ◽  
Geometric Analysis ◽  
Laser Scanner ◽  
Initial Imperfection ◽  
3D Models ◽  
Element Analysis ◽  
Engineering Software ◽  
Pipe Elbow ◽  
The Ideal

Pipe elbow is a common feature in pipelines and piping systems as a means to changing directions of otherwise straight pipelines. Irrespective of the processes involved in manufacturing pipe elbows, it is of interest to investigate whether they have any geometric imperfections. Researchers at the University of Alberta have devised a technique to measure initial imperfection of straight pipes prior to testing, using high resolution 3D surface profiler in conjunction with 3D reverse engineering software. The objective of the current study is to extend the imperfections measurement technique from measuring straight pipe segments to pipe elbows. Six (6) ninety (90) degree elbows are measured in this research with outside diameters ranging from NPS 12 inch to NPS 42 inch. A 3D laser scanner is used to acquire surface data and create 3D models corresponding to each elbow. A method for the geometric analysis of the elbows is developed using 3D inspection and reverse engineering software Geomagic®. The geometric idealization of a pipe elbow is a torus, which can be defined by a circle revolving around an axis, coplanar with the circle. The idealized geometry for each elbow is obtained through the developed method of geometric analysis, which includes the diameter of the circle defining the torus, and its distance from the axis of revolution. The difference between the ideal torus and the scanned geometry is considered as imperfection of each pipe elbow. The wall thickness values at the ends or edges of select pipe elbows are also measured from the scanned data and are reported as percentage deviation from the specified wall thickness around the perimeter at different cross sections. The 3D reverse engineering of the elbows indicated that they resemble the ideal geometry very closely. The ovalization imperfections are seen to be well within the value specified by CSA Z662-11. The wall thickness deviations are seen to vary between −10% to +25% of the specified value, with increased thickness being more prominent in the elbows. Finite element analysis of an elbow with thickness imperfection shows that higher hoop stress appears on the intrados than initially intended.

Analysis and Modifying of Injection-Mold for Notebook Computer Housing by CAE

2010 ◽  
Vol 426-427 ◽  
pp. 568-571
Author(s):  
Bai Liu ◽  
X.J. Liu ◽  
Long Liao ◽  
Y.B. Du
Keyword(s):  
Injection Molding ◽  
Color Variation ◽  
Mold Design ◽  
Injection Mold ◽  
Cooling Period ◽  
Notebook Computer ◽  
Filling Analysis ◽  
Cae Analysis ◽  
Sink Mark ◽  
Application Prospects

In the paper, C-Mold software was applied to the analysis of injecting molding of the notebook computer housing so as to solve the main problems of warpage and injection unbalance of the product. According to the results of filling analysis, the problem has been found out and the mold design has been improved. The described case showed the capability of CAE to find the reasons that cause warpage, duration of cooling period, sink mark, blush, color variation and shrinkage directly or indirectly. Thus, CAE analysis has a wide application prospects in injection molding.

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