Method of and apparatus for producing electrical conductor wire
AssigneeFelten & Guilleaume Carlswerk AG
InventorsWolfgang Volker, Fritz Pohlmann, Friedrich Radeck
Life of this patent
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Abstract
A method of and an apparatus for producing an electrical conductor wire, especially a profiled heavy wire wherein the wire to be coated is guided subsequently through applying means, calibrating means and through a hardening chamber in which the individual layers of varnish are exposed to ultraviolet radiation of different intensity of irradiation. The layers which are applied onto the conductor wire in superposing manner have different properties wherein the wire is running through the apparatus after each occurring application of varnish.
Claims21
A method of producing electrical conductor wires, especially profiled heavy wires, having the steps of providing a vertical supporting frame supported on a platform and including at least two sets of guide pulleys arranged in longitudinal direction so that one set of guide pulleys is provided at a distance to the platform on one end of the supporting frame, and the other set of guide pulleys is provided on the top of the supporting frame;
- applying varnish onto the conductor wire in applying means above the one set of guide pulleys in separated tanks each provided with throughopenings for the wire to be coated;
- calibrating the thickness of the varnished layer by stripping off superfluous varnish in calibrating means directly above the applying means and each being associated with one individual tank;
- hardening the applied and calibrated varnish in a hardening chamber arranged between the other set of guide pulleys and the calibrating means, wherein the improvement comprises:
- applying the varnish onto the conductor wire in the tanks in groups or of laterally disposed individual tanks;
- hardening the applied and calibrated varnish by ultraviolet radiation by at least a first pair of ultraviolet radiators within the hardening chamber and disposed transversely to the guide motion of the wires, and at least a second pair of ultraviolet radiators located parallel above the first pair of ultraviolet radiators and having a higher intensity of radiation than the first pair of ultraviolet radiators;
- intensifying and reflecting the radiation by a first group of reflectors each provided behind each ultraviolet radiator and a second group of reflectors each arranged equi-distantly between two wires, the reflectors being perpendicular to the longitudinal axis of the respective ultraviolet radiator;
- and cooling by cooling means connected to the hardening chamber to achieve an optimum temperature.
An apparatus for producing electrical conductor wires, especially profiled heavy wires, having a vertical supporting frame supported on a platform, the supporting frame including at least two sets of guide pulleys arranged in longitudinal direction, one set of guide pulleys being provided at a distance to the platform on one end of the supporting frame, the other set of guide pulleys being provided on the top of the supporting frame;
- means for applying varnish onto the conductor wire, the applying means being located above the one set of guide pulleys and having separated tanks each provided with through openings for the wire to be coated, means for calibrating the thickness of the varnished layer by stripping off superfluous varnish, the calibrating means being arranged directly above the applying means and each being associated with one individual tank, a hardening chamber arranged between the other set of guide pulleys and the calibrating means, wherein the improvement comprises:
- an arrangement of the tanks in groups or of laterally disposed individual tanks, at least a first pair of ultraviolet radiators within the hardening chamber and disposed transversely to the guide motion of the wires, at least a second pair of ultraviolet radiators located parallel above the first pair of ultraviolet radiators and having a higher intensity of radiation than the first pair of ultraviolet radiators, a first group of reflectors each provided behind each ultraviolet radiator for intensifying and reflecting the radiation, a second group of reflectors each arranged equi-distantly between two wires, the reflectors being perpendicular to the longitudinal axis of the respective ultraviolet radiator, and cooling means connected to the hardening chamber to achieve an optimum temperature.
Dependencies are inferred from the claim text.