Design of Headphone Shell Injection Mold Based on Pro/E

2013 ◽  
Vol 816-817 ◽  
pp. 307-310
Author(s):  
Yue Feng Li
Keyword(s):  
Injection Molding ◽  
Theoretical Basis ◽  
Mold Design ◽  
Manufacturing Cost ◽  
Injection Mold ◽  
Customer Requirements ◽  
Plastic Injection

This article studies headphone shell injection molding crafts analysis and mold design. According to mold structure crafts characteristics and customer requirements, we find out the best location of plastic injection, rational arrangement of the shunt and reasonable side core-pulling mechanism by using Pro/E, which simplifies mold structure, reduces mold manufacturing cost and provides a strong theoretical basis for the rationality of mold design.

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.

Design and fabrication of multi-cavity injection mold using hot runners and direct edge gates

2014 ◽  
Vol 228 (15) ◽  
pp. 2790-2798 ◽  
Author(s):  
Tae-Il Seo ◽  
Byeong-Uk Song ◽  
Jeong-Won Lee
Keyword(s):  
Mold Design ◽  
Injection Mold ◽  
Cooling Channel ◽  
Direct Edge ◽  
Injection Mold Design ◽  
Computer Aided ◽  
Structural Differences ◽  
Filling Analysis ◽  
Cavity Cooling ◽  
Plastic Injection

A hot runner system can provide many advantages to plastic injection mold engineers for improving product quality. In edge gate systems in particular, the gate traces can appear on the side of products rather than the top. However, it is difficult to establish hot runner systems using edge gates because of their structural differences from conventional gate systems. This article presents the entire process of preparing a 48-cavity plastic injection molding system with edge gates. This process consists of 48-cavity injection mold design, structural analysis, verification of design plans, filling analysis of multi-cavity, cooling channel design on the basis of cooling analysis, fabrication of the mold system, and test injection. All presented computer-aided engineering analyses were conducted using ANSYS and MoldFlow.

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.

Design of Plastic Injection Mold for the Crisper Cover

2011 ◽  
Vol 337 ◽  
pp. 498-502
Author(s):  
Dong Ling Yu ◽  
Xing Guo Wang ◽  
Nan Xing Wu
Keyword(s):  
Reference Value ◽  
Multiple Point ◽  
Mold Design ◽  
Injection Mold ◽  
Technological Characteristics ◽  
Operation Process ◽  
Injection Mold Design ◽  
Plastic Injection

A parting surface, gate form and location were confirmed by analyzing the structure and technological characteristics of a crisper cover, respectively. The insertion and splice mold structure were adopted, and a multiple point gate three-plate injection mold was designed. The mould structure and operation process were introduced. This designd had reference value for the injection mold design of other product.

Sustainable Manufacturing in Injection Molding: Development of Energy Map

2015 ◽  
Vol 735 ◽  
pp. 91-95
Author(s):  
Mohamad Farizal Rajemi ◽  
Maizal Mohd Hassan
Keyword(s):  
Energy Consumption ◽  
Injection Molding ◽  
Sustainable Manufacturing ◽  
Electrical Energy ◽  
Plastic Injection Molding ◽  
Manufacturing Cost ◽  
Electrical Energy Consumption ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Plastic Injection

Plastic injection molding machine consume high electricity during manufacturing process which can increase carbon emissions indirectly. The research aim is to generate an energy map for plastic injection molding machine. It involved several experimental investigations by having to record the electrical energy consumption of the machine. The results were than analyzed to develop an energy map for plastic injection molding operation. The results revealed effect of different parameter setting towards electrical energy consumption in injection molding. From this energy map, it can be used by the manufacturer in order to determine the optimized setting parameter in injection molding. This in turn will help to reduce the electrical energy in injection molding process. The reduction of electrical energy will not only reduce the manufacturing cost, but it also can help to reduce the carbon emission emitted during the generation of electrical energy at the power plant. Eventually this research will support sustainable manufacturing processes especially in injection molding industries.

Determination of Optimal Parting Directions in Plastic Injection Mold Design

CIRP Annals ◽  
1997 ◽  
Vol 46 (1) ◽  
pp. 429-432 ◽  
Author(s):  
A.Y.C. Nee ◽  
M.W. Fu ◽  
J.Y.H. Fuh ◽  
K.S. Lee ◽  
Y.F. Zhang
Keyword(s):  
Mold Design ◽  
Injection Mold ◽  
Injection Mold Design ◽  
Plastic Injection

scholarly journals Development and Application of Rapid Injection Molds Using Aluminum-Filled Epoxy Resins for Metal Injection Molding

2021 ◽  
Author(s):  
Chil-Chyuan Kuo ◽  
Xin-Yu Pan ◽  
Cheng-Xuan Tasi
Keyword(s):  
Injection Molding ◽  
Epoxy Resins ◽  
Metal Injection Molding ◽  
Manufacturing Cost ◽  
Injection Mold ◽  
Rapid Injection ◽  
Near Net Shape ◽  
Tooling Technology ◽  
Manufacturing Time ◽  
Conventional Machining

Abstract Metal injection molding (MIM) is a near net-shape manufacturing process combing conventional plastic injection molding and powder metallurgy. Two kinds of injections molds for MIM were developed using conventional mold steel and aluminum (Al)-filled epoxy resins in this study. The characteristics of the mold made by rapid tooling technology (RTT) were evaluated and compared to that fabricated conventional machining method through MIM process. It was found that the service life of the injection mold fabricated by Al-filled epoxy resins is about 1300 molding cycles. The saving in manufacturing cost of an injection mold made by Al-filled epoxy resins is about 30.4% compared to that fabricated conventional mold steel. The saving in manufacturing time of an injection mold made by RT technology is about 30.3% compared to that fabricated conventional machining method.

A Windows-native 3D plastic injection mold design system

2003 ◽  
Vol 139 (1-3) ◽  
pp. 81-89 ◽  
Author(s):  
L. Kong ◽  
J.Y.H. Fuh ◽  
K.S. Lee ◽  
X.L. Liu ◽  
L.S. Ling ◽  
...  
Keyword(s):  
Design System ◽  
Mold Design ◽  
Injection Mold ◽  
Injection Mold Design ◽  
Plastic Injection
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