An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin

A family mould consists of different shape of cavities used, while a multi cavity mould contains same shape of cavities to create injection products. The combinations of these features create a new family mould which is beneficial for the manufacturing cost and time reduction in injection moulding p...

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Main Author:	Mohd Yasin, Saiful Bahri
Format:	Thesis
Language:	English
Published:	2014
Subjects:	Molding and casting Reaction injection molding
Online Access:	http://ir.uitm.edu.my/id/eprint/14336/ http://ir.uitm.edu.my/id/eprint/14336/1/TM_SAIFUL%20BAHRI%20MOHD%20YASIN%20AS%2014_5.pdf

id	uitm-14336
recordtype	eprints
spelling	uitm-143362016-08-22T04:58:15Z http://ir.uitm.edu.my/id/eprint/14336/ An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin Mohd Yasin, Saiful Bahri Molding and casting Reaction injection molding A family mould consists of different shape of cavities used, while a multi cavity mould contains same shape of cavities to create injection products. The combinations of these features create a new family mould which is beneficial for the manufacturing cost and time reduction in injection moulding process. However, the main problem of the conventional family mould is the different cavity volume, led to an imbalance of melt filling behaviour. There are many successful family mould modifications which enabled a balance of melt filling such as an artificial balance runner system, runner shut-off system and variable runner system. Nevertheless, the inconsistencies of the melt filling behaviour in these family moulds are yet to be resolved especially when they are utilized in high mass production. Hence, the idea of an interchangeable turning sprue bushing (ITSB) insert was proposed in this study in order to overcome the imbalance of melt filling behaviour. The key for rotating ITSB insert was designed in three stages prior to a final ITSB design. The two chosen product geometry utilized were tensile and flexural test pieces, which were designed with the support of CAE analysis to obtain a favourable feeding system. With the incorporation of ITSB insert at the layout centre, the melt was able to shift in accordance to ITSB insert rotation. This allows filling of the tensile and flexural cavities during moulding at different times and different processing conditions, which resulted in melt filling balance behaviour. The optimization of the injection moulding process such as packing pressure, injection speed and holding time were successfully conducted through Scientific moulding analysis. The efficiency of the ITSB design and its consistency during production were successfully measured from the mass and wall thicknesses data during pilot production. In conclusion, ITSB insert was found to be a favourable optional design that can be considered for injection mould industry in order to produce multi design products 2014 Thesis NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/14336/1/TM_SAIFUL%20BAHRI%20MOHD%20YASIN%20AS%2014_5.pdf Mohd Yasin, Saiful Bahri (2014) An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin. Masters thesis, Universiti Teknologi MARA.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Molding and casting Reaction injection molding
spellingShingle	Molding and casting Reaction injection molding Mohd Yasin, Saiful Bahri An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
description	A family mould consists of different shape of cavities used, while a multi cavity mould contains same shape of cavities to create injection products. The combinations of these features create a new family mould which is beneficial for the manufacturing cost and time reduction in injection moulding process. However, the main problem of the conventional family mould is the different cavity volume, led to an imbalance of melt filling behaviour. There are many successful family mould modifications which enabled a balance of melt filling such as an artificial balance runner system, runner shut-off system and variable runner system. Nevertheless, the inconsistencies of the melt filling behaviour in these family moulds are yet to be resolved especially when they are utilized in high mass production. Hence, the idea of an interchangeable turning sprue bushing (ITSB) insert was proposed in this study in order to overcome the imbalance of melt filling behaviour. The key for rotating ITSB insert was designed in three stages prior to a final ITSB design. The two chosen product geometry utilized were tensile and flexural test pieces, which were designed with the support of CAE analysis to obtain a favourable feeding system. With the incorporation of ITSB insert at the layout centre, the melt was able to shift in accordance to ITSB insert rotation. This allows filling of the tensile and flexural cavities during moulding at different times and different processing conditions, which resulted in melt filling balance behaviour. The optimization of the injection moulding process such as packing pressure, injection speed and holding time were successfully conducted through Scientific moulding analysis. The efficiency of the ITSB design and its consistency during production were successfully measured from the mass and wall thicknesses data during pilot production. In conclusion, ITSB insert was found to be a favourable optional design that can be considered for injection mould industry in order to produce multi design products
format	Thesis
author	Mohd Yasin, Saiful Bahri
author_facet	Mohd Yasin, Saiful Bahri
author_sort	Mohd Yasin, Saiful Bahri
title	An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
title_short	An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
title_full	An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
title_fullStr	An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
title_full_unstemmed	An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin
title_sort	interchangeable turning sprue bushing (itsb) system in a family mould / saiful bahri mohd yasin
publishDate	2014
url	http://ir.uitm.edu.my/id/eprint/14336/ http://ir.uitm.edu.my/id/eprint/14336/1/TM_SAIFUL%20BAHRI%20MOHD%20YASIN%20AS%2014_5.pdf
first_indexed	2023-09-18T22:51:23Z
last_indexed	2023-09-18T22:51:23Z
_version_	1777417567698157568

An interchangeable turning sprue bushing (ITSB) system in a family mould / Saiful Bahri Mohd Yasin

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