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By overmoulding insert parts with a magnetic compound, magnets can be combined with axes, bushes or other functional elements.
We have automated the process of supplying and overmoulding insert parts, such as sintered or plastic-bonded magnets, axes, bushes, etc. If needed, the finished part can be qualified via integrated 100% testing.
The multi-component injection moulding technique allows the combination of multiple materials in one injection moulding process even if they have different material properties.
Compared to conventional processes, the use of the multi-component injection moulding technique offers distinct advantages:
We have used the multi-component injection moulding technique for years for the production of high-quality magnets.
The multi-station technique is used for assemblies with insert parts. In a station not actively integrated in the injection moulding process, the completed assembly can be removed and a new insert part can be loaded. Because of the parallel operation of these processes to the actual injection moulding process, cycle time savings of up to 30 per cent can be achieved depending on the complexity of the moulded and insert parts.
Multi-stage injection moulding is among the addition methods that are part of injection moulding and it is used for thick-walled moulded parts or plastic-bonded magnets. The moulded part of the magnet is produced in two separate, subsequent process steps. In each process step, approximately half of the component volume is injected. Due to the roughly squared dependency of the cooling period to the wall thickness, the resulting cooling period is reduced drastically. As the same time, the component quality increases due to the reduced individual shrinkage of the partial components.
