Mould Tool Types - Explained by Toolcraft Plastics
Below are the most common injection mould tool types we can offer you, together a definition of what the tool can achieve & the projects it is suitable for, as well as a Cost Comparison.
We can offer you various mould tool options e.g. a family tool or separate automatic unscrewing tools, thus you can choose the type to match your project needs.
For details of our range of conventional & CNC machines, please view our plant list or if you have a requirement for an injection mould tool please contact us.
| Tool Type | Definition | Suitability / Comments |
|---|---|---|
| Core Pulling (Manual) | Makes parts with side holes & features, but needs machine operator to manually remove tool parts to get finished part | Low - medium quantities of more complex parts. Lower tool cost than automatic cp tool, higher moulding costs |
| Core Pulling (Automatic) | Contains mechanism to automatically produce holes & features in parts which otherwise could not be released from tool | Medium - high quantities of more complex parts. Higher tool cost than manual cp tool - moulding costs lower, larger amounts made quicker |
| Family | Makes several different shaped & sized parts to produce a set made in same material & colour | Low - medium quantities of kit type parts e.g. knife, fork & spoon set |
| Hot Runner | Uses heated tool parts so standard cavity feed not needed & only parts (no waste) are made | Medium - high quantities of parts needing lower costs. Higher tool cost than standard tool |
| Insert (Manual) | Makes parts with feature holes which enable metal inserts to be e.g. pushed in afterwards | Low - medium quantities. Cost benefits or losses depend on job |
| Insert (Semi-Auto) | Moulds around inserts put in tool by machine operator to make parts inc. metal inserts | Low - medium quantities. Cost benefits or losses depend on job |
| Multi Impression | Makes several identical parts | Medium - large quantities, higher tool cost than single impression, moulding costs lower, larger amounts made quicker |
| Overmould | Moulds around parts put in tool by machine operator to make final part e.g. shaver plug | Low - medium quantities of parts needing encapsulation |
| Single Impression | Makes one part only | Low quantities, tool cost lower than multi impression, higher moulding costs |
| Thread manual unscrewing |
Makes parts with screw thread/s, but machine operator needed to manually unscrew tool inserts to get finished parts | Low - medium quantities of screw threaded parts. Lower tool cost than automatic unscrewing tool, higher moulding costs |
| Thread automatic unscrewing |
Contains mechanism to automatically make & unscrew parts with screw threads | Medium - high quantities of screw threaded parts. Higher tool cost than manual unscrewing tool - moulding costs lower, larger amounts made quicker |
| Universal | Gate position offset or moved to enable parts to be made in e.g. small machine & split position | All moulding quantities. Part & tool costs lower than standard due to machine efficiency |
| Upgradeable | Larger than if made to make e.g. just 1 part, only 1 or more impressions produce parts, with others blank, but upgradeable in future | Good for if moulding quantities are likely to increase in the future. Higher tool cost than if tool made to make e.g. just 1 part |
Please view our help page for more injection mould tool help. Alternatively, return to the Toolmaking Page.
