Method and device for electromagnetic spot welding of moulded parts

A device for electromagnetic spot welding of moulded parts, wherein the moulded parts comprise an induction-sensitive component incorporated in a heat meltable coupling means, said device comprising:

• a pressurizing body;
• and
• first displacing means configured for moving a pressurizing surface of the pressurizing body against the moulded parts or vice versa to join contact surfaces of the moulded parts to be fused by welding under pressure;
• wherein the pressurizing body further comprises:
• an inductor provided in the pressurizing body and configured to generate an electromagnetic field in at least the contact surfaces of the moulded parts thereby heat melting the coupling means by heating the induction-sensitive component;
• a heat sink provided in between the inductor and the pressurizing surface in direct contact with the inductor and the pressurizing surface, wherein additional heat sink material is disposed between parts of the inductor, and
• a mechanical fastener that is configured to be heated by the electromagnetic field generated by the inductor, and second displacing means configured for moving the heated mechanical fastener towards the heated moulded parts and drive the heated mechanical fastener into the joined heated moulded parts to a position further than the contact surfaces of the heated moulded parts, such that reinforcing fibers in the heated moulded parts are deviated and formed around a cavity produced by the mechanical fastener.