Design of Multi-Cavity Injection Mold for Tensile and Flexural Test Specimens

The purpose of this project is to design a multi cavity mold allows me an opportunity to
learn about the mold and the injection molding process. With the increasing number of
students in Universiti Teknologi PETRONAS that utilize the materials laboratory and
using the ISO 3167 molded sample for multi purpose testing and with the existing design
which can be further utilized to produce more specimens for learning purposes has lead to
the design of the new mold. Gathering of information need to be done on the current and
with research on mold design, the new mold is redesigned with the use of design software
CATIA. The design of the new mold consists of new parts for the multicavity mold and
existing design and parts of the current mold. Components are reutilized so that fewer
new components are needed. The design of the mold follows closely with the design
guidelines and existing design such as runner design and mold plate thickness allows the
mold to be designed within the parameters. In the new mold design, new parts that were
redesigned are the core plate, cavity plate and the ejector plates. Existing components
such as ejector pins and springs were redesigned to fit into the new two cavity mold.
Other components such as the rise bars, setting plate are reuse to fit into the new design.