Multi Cavity Mould

Multi Cavity Mould


A multi-cavity mould can be understood, obviously referring to mold with
multiple cavities. The multi-cavity mold comprises a multi-cavity of the same
plastic part and a multi-cavity of different plastic parts. The use of multi-
cavity molds for injection molding of plastic products can increase production
efficiency and reduce costs, so the multi-cavity moulds are becoming more
popular.

Since the multi-cavity mould must have multiple runners to supply the melt to
each cavity, the rationality of multi cavity injection molding system multi
cavity mold design directly affects the quality of the injection molded parts,
material consumption, production efficiency and economic benefits.

In order to ensure the uniformity and performance of the quality and
performance of each cavity, the flow balance of the gating system during the
injection process is very critical, so that the plastic melt can be filled the
cavity with the same pressure and temperature at the same time. Therefore,
filling balance is the most important factor to consider when designing a mold
cavity.


The arrangement of the cavity and the runner is divided into two categories:
balanced and unbalanced.

The feature of balance type is the length, shape and section dimension of the
runner from the sprue to each cavity are correspondingly the same, it can
realize even feeding of all cavities and fill the cavity at the same time.
However, the unbalanced feature is that the lengths of the runners from the
sprue to the cavity gates are not equal, which is not conducive to balanced
feeding, but the unbalanced arrangement can significantly shorten the overall
flow of the melt in the gating system. The compact mechanism reduces heat loss
and injection pressure loss during flow and shortens the mold filling time.

Hanking Mould Engineering Ltd. is a professional injection moulding companies
china, we provide plastic injection molding, industrial molds, insert moulding
products and etc. Want to know more? Please contact us.

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