Baking Machine and Winding Device

A winding device (1) for the continuous production of edible wafer rolls provided on the inside with an edible substance, comprising:

• a mandrel (2) running along a main axis (5), the mandrel (2) having a mounted portion (3), a projecting portion (4) having a free end (19), and a cylindrical winding wall (6), wherein the mandrel (2) in its projecting portion (4) is delimited transversely to the main axis (5) by the cylindrical winding wall (6), the cylindrical winding wall (6) having an exterior winding surface (7) which is adapted for abutment and for rolling of a warm plastically deformable wafer strip and by means of which, during operation, heat transfer takes place due to the abutment of the wafer strip,
• the interior of the cylindrical winding wall (6) defining a substance channel (8) running along the main axis (5) and at least one temperature-control channel (9), said substance defining channel adapted for introducing the edible substance into an interior of an endless sleeve-shaped hollow body or wafer roll, wherein the substance channel (8) exits from the mandrel (2) in the region of the free end (19), and wherein the substance channel (8) is delimited by a substance channel wall (10), and wherein said at least one temperature-control channel (9) is adapted for guiding a temperature-control medium provided in the interior of the cylindrical winding wall (6),
• wherein the temperature-control channel (9) extends from the mounted portion (3) of the mandrel (2) into the projecting portion (4) of the mandrel (2) and back again into the mounted portion (3) of the mandrel (2).