Development of Barrel Heating via Induction in Injection Molding Machine

2015 ◽  
Vol 764-765 ◽  
pp. 249-253
Author(s):  
Huy Tien Bui ◽  
Sheng Jye Hwang
Keyword(s):  
Temperature Distribution ◽  
Injection Molding ◽  
Induction Heating ◽  
Heating System ◽  
Resistance Heating ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Heating Systems ◽  
Induction Heating System ◽  
Current Resistance

A barrel heating system will be developed by using induction heating instead of current resistance heating. The experiment results showed the induction heating system can change successfully the current resistance heating system in heated the barrel of injection molding machine. A working coil coupled with magnetic concentrator bars was also considered. Finally, the uniformity of temperature distribution is compared between two barrel heating systems.

Development of barrel heating system in injection molding machine via induction heating

2015 ◽  
Vol 21 (3) ◽  
pp. 244-249 ◽  
Author(s):  
Huy-Tien Bui ◽  
Sheng-Jye Hwang
Keyword(s):  
Temperature Distribution ◽  
Magnetic Flux ◽  
Induction Heating ◽  
Heating System ◽  
Resistance Heating ◽  
Uniform Temperature ◽  
Content Type ◽  
Uniform Temperature Distribution ◽  
Proper Design ◽  
Induction Heating System

Purpose – The purpose of this paper is to develop a barrel heating system using induction heating instead of resistance heating. And, a working coil for the induction heating system was designed so that the barrel has uniform temperature distribution. Design/methodology/approach – A coupling design combining the pitch of turns of working coil with the magnetic flux concentrators in the barrel induction heating system was developed to achieve uniform temperature distribution which was approximately the same as temperature uniformity obtained from that of resistance heating system. Findings – In contrast to resistance heating method, induction heating is more efficient because the heating is directly applied on the work-piece. Its heating rate is higher than that of resistance heating method. However, the uneven temperature distribution in the barrel is the main disadvantage of the induction heating system. But, with proper design of adjusting the pitch of turns at the center of working coil and adding magnetic flux concentrators at areas with lower magnetic flux, the barrel heating system via induction can achieve temperature distribution uniformity. Originality/value – Under proper design of working coil, the barrel heating system by induction method can achieve the same uniform temperature distribution as the barrel heated by resistance method, and could be practically used in an injection molding machine.

Design of an induction heating coil coupled with magnetic flux concentrators for barrel heating of an injection molding machine

2014 ◽  
Vol 229 (3) ◽  
pp. 518-527 ◽  
Author(s):  
Huy-Tien Bui ◽  
Sheng-Jye Hwang
Keyword(s):  
Temperature Distribution ◽  
Injection Molding ◽  
Magnetic Flux ◽  
Heating Rate ◽  
Induction Heating ◽  
Heating Time ◽  
Resistance Heating ◽  
Molding Machine ◽  
Heating Method ◽  
Heating Coil

In an injection molding machine, the conventional barrel heating system which uses resistance heating method (RH) has some drawbacks such as low heating rate, long heating time, and energy loss. With induction heating (IH) technique, the barrel can better handle almost all of these disadvantages. However, non-uniform temperature distribution on inside surface of a barrel is the main drawback of induction heaters. A working coil coupled with magnetic flux concentrators via adjustment of magnetic flux concentrator spacing to achieve uniformity of magnetic flux and temperature distribution on the inside surface of a barrel was proposed and experimented. Results showed that, when barrel was heated by induction heating method with the proposed induction heating coil, heating time to reach a specific temperature could be reduced, and heating rate increased compared to resistance heating method. With 8 mm pitch of magnetic flux concentrators on a coil, the temperature distribution was the most uniform.

Innovative electrotechnological systems to provide the temperature modes of technological pipelines

2019 ◽  
Vol 2 (1) ◽  
pp. 29-39 ◽  
Author(s):  
S. G. Konesev ◽  
P. A. Khlyupin
Keyword(s):  
Induction Heating ◽  
Thermal Exposure ◽  
Heating System ◽  
The Arctic ◽  
Process Conditions ◽  
Heating Systems ◽  
Fluid Properties ◽  
Low Efficiency ◽  
Extreme North ◽  
Induction Heating System

Introduction: the systems of thermal effects on thermo-dependent, viscous and highly viscous liquids under conditions of the Arctic and the Extreme North are considered. Low efficiency and danger of heating systems based on burned hydrocarbons, heated liquids and steam are shown. Electrothermal heating systems used to maintain thermo-dependent fluids in a fluid state are considered. The evaluation of the effectiveness of the application of the most common electrothermal system — heating cables (tapes). The most effective electrothermal system based on induction technologies has been determined. Materials and methods: considered methods of thermal exposure to maintain the fluid properties of thermo-dependent fluids at low extreme temperatures. Results: presents an induction heating system and options for its implementation in the Extreme North and the Arctic. Conclusions: induction heating system to minimize loss of product quality, improve the system performance under changing process conditions, eliminate fire product, to reduce the influence of the human factor.

A COMPACT HALF-BRIDGE INDUCTION HEATING SYSTEM FOR MAGNETIC NANOPARTICLE THERMOTHERAPY APPLICATIONS

2007 ◽  
Vol 19 (01) ◽  
pp. 27-35 ◽  
Author(s):  
Cheng-Chi Tai ◽  
Ming-Kun Chen
Keyword(s):  
Induction Heating ◽  
Magnetic Nanoparticle ◽  
Field Effect Transistor ◽  
Heating System ◽  
Electrical Circuit ◽  
Oxide Semiconductor ◽  
Preliminary Heating ◽  
Heating Systems ◽  
Effect Transistor ◽  
Induction Heating System

Appling magnetic nanoparticle (MNP) in curing cancers has been a significant subject of medical research. A variety of switched-mode resonant inverters using voltage-fed-type high-frequency applicator with power MOSFET (metal oxide semiconductor field effect transistor) gate has been recently developed for medical use in electromagnetic thermotherapy. In this paper, a MNP heating system is presented and the electrical circuit characteristics of resonant components are analyzed. A half-bridge induction heating incorporate component functions directly at the applicator thereby reducing the size, weight, and cost of MNP heating systems. Preliminary heating results show a rise of about 3.8°C with 10-nm MNP for a 220-kHz frequency during the first 20 min.

Numerical Simulation of Temperature Field in Barrel of Injection Molding Machine during Induction Heating Process Based on ANSYS Software

2009 ◽  
Vol 87-88 ◽  
pp. 16-21 ◽  
Author(s):  
Shi Jia Chang ◽  
Peng Cheng Xie ◽  
Xue Tao He ◽  
Wei Min Yang
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Injection Molding ◽  
Induction Heating ◽  
Heating Process ◽  
Magnetic Vector Potential ◽  
Ansys Software ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
Field Problem

A finite element model of temperature field coupled with electromagnetic field has been established based on induction heating theory including Maxwell’s equations, thermal conductivity differential equation and magnetic vector potential to simulate the induction heating process of barrel of injection molding machine by universal ANSYS software, and to obtain temperature field of the barrel related to time variation. The coupled thermal and electromagnetic field problem taking account of nonlinear materials characteristics related to temperature was discussed. The induction heating process of barrel was analyzed, and the temperature distribution and its variation with time were obtained.

scholarly journals Industrial heating system creating given temperature distribution

2008 ◽  
Vol 5 (1) ◽  
pp. 57-66 ◽  
Author(s):  
Ilona Iatcheva ◽  
Ilonka Lilianova ◽  
Hristophor Tahrilov ◽  
Rumena Stancheva
Keyword(s):  
Temperature Distribution ◽  
Induction Heating ◽  
Heating System ◽  
Field Analysis ◽  
The Finite Element Method ◽  
Optimization Task ◽  
Surface Method ◽  
Nonlinear Transient ◽  
Industrial Heating ◽  
Induction Heating System

The aim of the work is precise coupled electromagnetic-temperature field analysis using the finite element method of an induction heating system and creation of adequate field models at chosen control points. The obtained models have been applied in an optimization task, concerning special requirements for temperature distribution in the heated detail. The field analysis problem was solved as nonlinear, transient and axisymmetrical. The field models used in the optimization problem were based on the Response surface method and Design of experiment. The presented example refers to a real induction heating system. Heated details after plastic deformation and hardening are used for producing farm instruments.

Estimate the Melt Flow Length with Internal Induction Heating for the Injection Molding Process

2020 ◽  
Vol 863 ◽  
pp. 97-102
Author(s):  
Huynh Duc Thuan ◽  
Tran Anh Son ◽  
Pham Son Minh
Keyword(s):  
Temperature Distribution ◽  
Injection Molding ◽  
Heating Rate ◽  
Induction Heating ◽  
Heating System ◽  
Mold Temperature ◽  
Heating Process ◽  
Injection Molding Process ◽  
Molding Process ◽  
Internal Induction

In this paper, an induction heating system was applied to the heating stage in the injection molding process. Through simulation and experiment, the heating process was estimated by the temperature distribution and the heating rate. In the simulation, the mold temperature was increased from 30°C to 180°C in 9 s. Therefore, the heating rate was higher than 16°C/s, which represents a positive result in the field of mold heating. Additionally, the temperature distribution revealed that the higher temperature is concentrated on the gate area, while the outside of the mold cavity is at a lower temperature. The same parameters were applied to both the experiment and the simulation, and the results were in good agreement.

scholarly journals EVALUATION OF THE HEATING SYSTEM FROM AN INJECTION MOLDING MACHINE

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
LUMINITA BIBIRE ◽  
NARCIS BARSAN
Keyword(s):  
Injection Molding ◽  
Heating System ◽  
Second Phase ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
The Matrix ◽  
Main Factors ◽  
The Creation ◽  
Economical Process

<p>Injection is an economical process characterised through an increased productivity that leads, in the majority of cases, to finite pieces. The process of injection includes two distinctive phases, firstly, when the melting occurs, followed by the homogenisation and the creation of pressure; the process takes place in the plasticizing unity; coming next being the second phase that consists in the forming of the producs, in the cavity of the matrix. Regarding the main factors, the purpose of this paper was insuring a thermic regime as uniform as possible in order to obtain an appropriate plastifying process. To do this, with the help of a thermovision camera type Fluke Ti20, the thermic regime has been studied in the area of the plastifying cylinder, following the balancing of the heating resistances.</p>

scholarly journals EVALUATION OF THE HEATING SYSTEM FROM AN INJECTION MOLDING MACHINE

2018 ◽  
Vol 24 (2) ◽  
pp. 15-24
Author(s):  
LUMINITA BIBIRE ◽  
NARCIS BARSAN
Keyword(s):  
Injection Molding ◽  
Heating System ◽  
Second Phase ◽  
Molding Machine ◽  
Injection Molding Machine ◽  
The Matrix ◽  
Main Factors ◽  
The Creation ◽  
Economical Process

Injection is an economical process characterised through an increased productivity that leads, in the majority of cases, to finite pieces. The process of injection includes two distinctive phases, firstly, when the melting occurs, followed by the homogenisation and the creation of pressure; the process takes place in the plasticizing unity; coming next being the second phase that consists in the forming of the producs, in the cavity of the matrix. Regarding the main factors, the purpose of this paper was insuring a thermic regime as uniform as possible in order to obtain an appropriate plastifying process. To do this, with the help of a thermovision camera type Fluke Ti20, the thermic regime has been studied in the area of the plastifying cylinder, following the balancing of the heating resistances.

Sign in / Sign up

Export Citation Format

Share Document