An injection mold design checklist enables a mold designer to ask the right questions so that any new mold build will go according to plan and be producing parts in the shortest possible lead-time.Right-click here to download a checklist in PDF format
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A part drawing will have all of this information.
The part drawing is then used to pre-determine the following basic mold design:
With this information, the ratio of the maximum flow length to wall thickness is be calculated. The maximum flow length is the distance from the gate to the furthest parting line.
This ratio is used to estimate the cavity pressure inside the mould tool during first stage filling. The higher it is the more robust the mould design must be.
These can be determined by experience or by computer simulation software.
The annual production quantity requirement will determine the type of material that the injection mould will made from and the accuracy of the mold build. It will also determine the number of cavities the mould will need.
A new injection mold is often required to fit into several different machines in any one molding company for production flexibility. The following platen layout information is required for each machine. This information is supplied by the injection molder.