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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.