Optimizing Flow for the Two Color Injection Mould Design

2013 ◽  
Vol 441 ◽  
pp. 627-630
Author(s):  
Yan Fang Yin ◽  
Zhen Hui Tian
Keyword(s):  
Analytical Solutions ◽  
Material Behavior ◽  
Governing Equations ◽  
Window Frame ◽  
Moulding Process ◽  
Injection Moulding Process ◽  
Cad Cam ◽  
Pros And Cons ◽  
Mould Design ◽  
Cam Systems

Commercial CAD/CAM systems provide semi-automatic tools to assist the designer in the dimensioning process. Analytical solutions to injection molding problems are very rare due to thecomplexities of the governing equations, the material behavior and the cavity geometry. Study of window frame fabrication by injection moulding process was carried out with the aid of Moldflow® software. Ejector plate designs were created to compare the pros and cons of each design. The investigations were carried out on flowing, packing, cooling and costing of injection moulded window frame. Using the method, good results have been obtained for several basic geometric models.

Integration of CAD CAM Techniques in the Development of an Injection Mould for Automotive Parts

2014 ◽  
Vol 216 ◽  
pp. 322-325 ◽  
Author(s):  
Andrei Adam ◽  
Cristian Cosma ◽  
Adrian Ilie Dume ◽  
Sorin Jadaneantu
Keyword(s):  
Injection Moulding ◽  
Unit Cost ◽  
Value Added ◽  
Injection Mould ◽  
Moulding Process ◽  
Global Competitiveness ◽  
Plastic Materials ◽  
Injection Moulding Process ◽  
Cad Cam ◽  
Automotive Parts

Processing by injection is the technological process by that the thermoplastics material is injected, under pressure, in the cavity of a mould, where it cools down and solidifies. This process is the most common method for obtaining plastic materials. Injection moulding of thermoplastics has emerged as the premier vehicle for delivering high quality, value added commercial products. Continued global competitiveness has increased standards for product capability and quality while requiring reduced product development time and unit cost. Despite advanced design methods and new process technologies, it is becoming apparent that the injection moulding process is neither flexible nor robust. This paper presents a design process using CAD-CAM software applied to an injection mould for manufacturing a plastic component that is used in the automotive industry. The component was analyzed, measured and subjected to simulations that will certify the quality of the final product.

scholarly journals Optimisation of Mould Design for Injection Moulding – Numerical Approach

2021 ◽  
Vol 15 (2) ◽  
pp. 258-266
Author(s):  
Damir Godec ◽  
Vladimir Brnadić ◽  
Tomislav Breški
Keyword(s):  
Computer Simulation ◽  
Injection Moulding ◽  
Numerical Approach ◽  
Processing Parameters ◽  
Simulation Software ◽  
Moulding Process ◽  
Part Geometry ◽  
Injection Moulding Process ◽  
Mould Cavity ◽  
Mould Design

Computer simulation of injection moulding process is a powerful tool for optimisation of moulded part geometry, mould design and processing parameters. One of the most frequent faults of the injection moulded parts is their warpage, which is a result of uneven cooling conditions in the mould cavity as well as after part ejection from the mould and cooling down to the environmental temperature. With computer simulation of the injection moulding process it is possible to predict potential areas of moulded part warpage and to apply the remedies to compensate/minimize the value of the moulded part warpage. The paper presents application of simulation software Moldex 3D in the process of optimising mould design for injection moulding of thermoplastic casing.

scholarly journals Modeling and Analysis of Injection Moulding Process Parameters for Plastic Gear Industry Application

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Nik Mizamzul Mehat ◽  
Shahrul Kamaruddin ◽  
Abdul Rahim Othman
Keyword(s):  
Polymer Melt ◽  
Optimization Method ◽  
Processing Parameters ◽  
Taguchi Optimization ◽  
Modeling And Analysis ◽  
Moulding Process ◽  
Real Process ◽  
Injection Moulding Process ◽  
Mould Design ◽  
Plastic Gears

The performance of plastic gears in wide variety of power and motion transmission applications is rather limited due to weak mechanical properties and divergent mechanism of failures. A methodical simulation is carried out to analyze the gear performance with various gating system types, gate locations, and processing parameters via grey-based Taguchi optimization method. With the obtained optimum results in simulation stage, the flow patterns of polymer melt inside the mould during filling, packing, and cooling processes are studied and the plastic gear failures mechanism related to processing parameters are predicted. The output results in the future can be used as guidance in selecting the appropriate materials, improving part and mould design, and predicting the performance of the plastic gear before the real process of the part manufacturing takes place.

The Effect of Thermo-Mechanical Environment on the Shrinkage and Warpage in Thermoplastic Parts

2008 ◽  
Vol 587-588 ◽  
pp. 558-562 ◽  
Author(s):  
P.S. Alves ◽  
A.J. Pontes
Keyword(s):  
Material Properties ◽  
Injection Moulding ◽  
Data Acquisition System ◽  
Monitoring And Control ◽  
Process Variables ◽  
Mechanical Environment ◽  
Moulding Process ◽  
Injection Moulding Process ◽  
Mould Design ◽  
And Control

During the injection moulding process, the material is subjected to successive transformations, being submitted to a thermo-mechanical environment that determines the final dimensions of the part. This environment is characterized by several parameters which are related to material properties, the mould design, equipment and process variables. As a result, deviations of the dimensions of the moulded parts from the dimensions of the cavity cannot be avoided. If differences on shrinkage occur, caused for example by anisotropies of the material or non-uniform cooling, distortions will happen. In order to predict this two effects on the injection cycles is require one strategy to monitoring and control the process variables. The aim is to achieve highest quality control of all manufacture parts. This paper presents the effect of different holding pressures and mould temperatures on shrinkage and warpage in two different materials, one amorphous (PC) and another semi crystalline (PP). An instrumented mould was manufactured. During the injection moulding process sensors signals were continuously monitored by a Data Acquisition System. The experimental results were compared with predictions made by commercial software.

Mould Filling and Pressure Distribution for Polymer Resins

2011 ◽  
Vol 264-265 ◽  
pp. 771-776
Author(s):  
A. Mohd ◽  
C. Hindle ◽  
W.A.Y. Yusoff
Keyword(s):  
Simulation Software ◽  
Cylindrical Shape ◽  
Moulding Process ◽  
Polymer Resin ◽  
Mould Filling ◽  
Packing Pressure ◽  
Injection Moulding Process ◽  
Mould Cavity ◽  
Mould Design ◽  
Market Needs

The application of simulation software packages for mould design and injection moulding process is becoming importance to optimizing the moulding quality and satisfy market needs. This paper presents the simulation of mould filling and packing for various polymer resin types. The filling and packing pressure phases for different type of polymer resins as well as the flow behaviour of molten resin in the mould cavity were investigated. Three common polymer resins which are amorphous and crystalline thermoplastics were used. Cylinder component cups with variation of wall thicknesses were designed. Two-cavity prototype moulds for cylindrical shape component were constructed by using AutoCAD 2006 including assembly and part drawings. The 3D model was produced by using Autodesk Inventor Professional. The result successfully revealed that polyamide resin required shorter time for filling the cavity and less pressure compared to PS and ABS.

Warpage Analysis of Single and Dual Gates Designed for Injection Moulding Using Response Surface Methodology

2015 ◽  
Vol 754-755 ◽  
pp. 775-783 ◽  
Author(s):  
S.M. Nasir ◽  
Khairul Azwan Ismail ◽  
Z. Shayfull ◽  
M.A. Fairuz
Keyword(s):  
Injection Moulding ◽  
Variable Parameter ◽  
Acrylonitrile Butadiene Styrene ◽  
Inlet Temperature ◽  
Melt Temperature ◽  
Mould Material ◽  
Moulding Process ◽  
Packing Pressure ◽  
Injection Moulding Process ◽  
Mould Design

This study focuses on the analysis of plastic injection moulding process simulation using Autodesk Moldflow Insight (AMI) software in order to correlate between process parameters as an input and warpage as an output for single and dual gates mould design. Nessei NEX 1000 injection moulding machine and P20 mould material details are incorporated in this study on top of Acrylonitrile Butadiene Styrene (ABS) as a moulded thermoplastic material. Coolant inlet temperature, material melt temperature, packing pressure and packing time are selected as a variable parameter. Design Expert software is obtained as a medium for analysis and optimization of input variables in order to minimize the warpage. RSM method as well as Analysis of Variance (ANOVA) has been applied in this study. The results of ANOVA show that some interactions between factors are significant towards warpage existence, which is coolant inlet temperature, material melt temperature and packing pressure. Furthermore, the model created using RSM can be used for warpage prediction and improvement due to a minimum value of error. From this study, the dual gate is the best solution which able to improve the warpage up to 80% instead of single.

ANALYSIS OF THE PRICE OF THE MANUFACTURE OF BATCH PARTS FOR CNC MILLING AUXILIATED BY CAD / CAM SYSTEMS

2018 ◽  
Author(s):  
ERIC RAMALHO FERREIRA DE CARVALHO ◽  
MARCOS VINICYUS OLIVEIRA ◽  
erijanio Silva ◽  
Gutembergy Diniz ◽  
João Dehon Rocha Junior ◽  
...  
Keyword(s):  
Cnc Milling ◽  
Cad Cam ◽  
Cam Systems
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