Device and method for producing an adhesive thread and for connecting workpieces using the adhesive thread

A device for joining workpieces using an adhesive thread, comprising

• an adhesive thread device comprising:
• a feeding device for supplying an adhesive-free crude thread,
• an adhesive tank for receiving and storing an adhesive granulate,
• a main heater arranged at a lower portion of the adhesive tank to define an activation zone of the adhesive tank, where the adhesive granulate is melted,
• a substantially horizontally arranged first closed receptacle, which is connected to the activation zone of the adhesive tank with a first end,
• wherein the first closed receptacle comprises at least one inlet opening for feeding and at least one outlet opening for withdrawing the adhesive thread, and
• wherein, when passing the crude thread through the first closed receptacle, the entire outer surface of the crude thread is wetted with adhesive in an oxidation-free manner,
• wherein the adhesive thread device further comprises an expansion tube arranged at the first closed receptacle between the adhesive tank and the at least one outlet opening, and
• a working plane for placing the workpieces to be joined, which extends below the closed receptacle, and
• a press-on device for pressing the adhesive thread onto the workpieces to be joined.