Nexans

Nico Lange

Michael Meyer

Christian Frohne

Holger Schulz

Ralf Egerer

Olaf Petersen

Steven Dinkel

Christian Reiter

Wilhelm Unger

Christian Dr Frohne

A method for the continuous production of a thin-walled, perforated metal hollow profile with one or more fibre waveguides mounted therein. The method includes supplying of a flat metal strip at a first supply rate to a deforming device, which continuously deforms the metal strip into a metal hollow profile with a slot running in a longitudinal direction. Two opposite edges of the metal strip deformed into the metal hollow profile that lie flush against one another in a contact region extending in the longitudinal direction of the metal hollow profile are continuously welded to one another, drawn off from the welding region and perforated. The method further includes positioning a protective tube reaching into the welded metal hollow profile on the draw-off side to beyond the perforation point and supplying one or more fibre waveguides from one or more fibre unwinders via the protective tube, such that the fibre waveguide or waveguides are introduced into the perforated metal hollow profile from the guide or protective tube downstream of the perforation point in the drawing-off direction. The perforated metal hollow profile with the fibre waveguide or fibre waveguides mounted therein is received in a receiving unit.

Method for the continuous production of optical fibre waveguide sensors mounted in a perforated metal hollow profile

A corrugating unit is used which presses a first corrugation into the pipe which is moved in its longitudinal direction through the corrugating device. The spacing between the wave peaks is subsequently reduced, for obtaining a second corrugation, by a clamping unit composed of two separately arranged clamping devices resting against the pipe. The pipe provided with a first corrugation is pressed continuously by the first clamping device against a fixed point realized by the second clamping device, which, in the position of operation, is arranged, in relation to the clamping device, in axial direction behind the first clamping device. Both clamping devices are removed cyclically from the pipe and are moved back into a new position in the opposite direction of the direction of movement of the pipe and, in this new position, again rest in the two different areas against the pipe.

Method and device for manufacturing a corrugated metal pipe

Growing community of inventors

Wunstorf, Germany

Nico Lange