A robotic method for introducing a solidifying substance into the inner cavity of wind turbine blades

A method for introducing a solidifying substance into an inner cavity of a wind turbine blade, the method comprising the following steps:

• (i) drilling coaxial apertures in a wind turbine blade opposite walls by a filing means comprising a drilling means, a rod and a core fixed together, wherein the core is provided with a channel and one or more apertures connected with the channel and designed to allow supply of a liquid or semiliquid solidifying material through the channel and the apertures;
• wherein the rod is made substantially from the same material as the wind turbine blade;
• (ii) pushing out the drilling means through the created apertures so that the apertures in the core part of the filling means are located in the inner cavity of the blade;
• (iii) supplying a solidifying substance in the liquid or semiliquid form into the inner cavity of the blade through the channel and aperture or apertures of the core part of the filling means;
• (iv) partially pulling or pushing out the filling means so that only the rod part of the filling means remains within the inner cavity of the blade;
• (v) cutting away the ends of the rod of the filling means from the outer sides of the wind turbine blade, so that the rod part of the filling means remains within the inner cavity of the blade and the ends of the rod part are closing the apertures made in the wind turbine blade walls.