Injection moulds

How are injection moulds created?

1. Project of the element

• a three-dimensional model of the element (3D model)
• establishing cast alignment
• the choice of materials used to create the element (taking shrinkages into consideration)
• surface finishing (surface quality, texture, structure, colour – the final finish of the product)
• tolerances of the manufactured element
• method of delivery of the element, considering installation requirements

2. Project of the injection mould

• the choice of materials for the mould
• division – outlining the elements of the mould and choosing normalised materials
• considering the type of connection with the moulding machine to be used
• considering cast shrinkages
• checking the mould elements’ collision factor
• preparing CNC programs and the technology used to create the mould

3. Mould creation

• purchase of materials
• manufacture of projected elements – CNC milling
• hardening
• grinding
• EDM processing (die-sink and wire-cut)
• surface cleaning
• threading
• matching
• socket inspection
• tightness inspection

4. First test of the mould

• mould functionality check
• manufacturing first elements
• measurement of the manufactured elements after the initial tests
• quality evaluation

5. Post-test mould adjustment

• removal of flashes
• dimensional adjustment
• surface finishing according to the project specification

6. Final tests

7. Element