Case Study : Injection
mould design for handle of a refrigerator
Our client Promoulds is
supplier of injection and die-casting molds to many companies in
India. They specialize in medium size molds for appliance and consumer
industry. This particular mold was meant for Godrej Appliance Ltd.
India for one of their many refrigerator models.
The product to mold is a
aesthetic part for the refrigerator which also has recess which
forms the handle to open and close the refrigerator. Uniqueness
of this product is that it forms undercut on cavity side of the
mold. Customer did not want any split line on the component on this
region since it was aesthetic part of the component.
We studied the product design's
special requirement. Intelligent mold design had to be contrived.
We used the advantage shrinkage factor on the long component. No
ejection was given in the core / moving side. The component remains
with the cavity and is released automatically when it shrinks and
then falls. Parting line was decided after close consultation with
our customer- the mold maker and our customer's customer. We used
our experience and careful logical analysis to finalize the design
and split line
Scope of work
Scope of work involved
digital 3d part creation from 2d controlled copy received
from the customer. The 3d model was thoroughly checked for
deviations, surface quality, and drafts. Mold design was done
with complete detailing for all parts as per customer standards.
Special care was taken to ensure ease in manufacturing with
complete and systematic detailing. Core, cavity, slider were
split and extracted. CNC codes as per the tools available
were created. We provided each part complete shopfloor level
documentation. Electrodes were designed wherever required
and we provided the complete CAM support.
Top Main Channel
of the end product were satisfactorily met. Previous molds,
which were not designed in this manner, caused parting line
on the aesthetic surface. But with this new design the aesthetic
for the product was enhanced. All future molds for similar
parts for Godrej appliances now use the same concept. With
timely delivery and support from ICS, promould could meet
its delivery schedule also ensuring quality at all levels.
This project helped them in acquiring more business from their
Parting line for the part
3d model of Core, Cavity and
Mold layout with detailed