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Apparatus for removing an insulating layer from a portion of a conductor
| Details |
Inventors: Cardineau, Yan; Frankovich, Mark M.;
Assignee: Intermedics Inc. (Angleton, TX)
Primary Examiner: Evans; Geoffrey S.
Assistant Examiner:
Attorney, Agent or Firm: Schwegman, Lundberg, Woessner & Kluth, P.A.
An apparatus for using a laser beam to remove or ablate an insulating coating from a desired segment of an insulating coating from a desired segment of an insulated conductor (wire) without damaging or causing mechanical stress to the wire. A lens can be used to focus the laser beam at a focal point and a support to locate the insulated conductor in a position between the lens and the focal point in a path of the laser bean. A reflector can be aligned with the opening so as to reflect the laser beam portion back toward the conductor. The support can include a generally planar coil guide such as a Y-shaped groove. |
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DETAILED DESCRIPTION Oour invention relates to an apparatus and technique for stripping an insulating coating from a conductor without damaging the conductor, and for selectively stripping an insulating coating from a individual conductors in a multi-conductor coil.
A laser beam formulated to ablate the insulating coating is directed at the portion of the wire from which it is desired to remove the insulation.
Because no mechanical force is used and the conductor is not deformed in the process, the present technique causes no damage to the conductor.
Because the insulation layer ablates well before significant energy is transferred to the conductor, the present technique has no permanent effect on the conductor.
In a multi-conductor coil in which the insulating layers on the individual conductors are the same, selective stripping is accomplished by uncoiling the conductors, stripping the desired portion of each and recoiling the conductors, if desired.
Alternatively, in a multi-conductor coil, the insulating coating on some of the individual conductors can differ from that on others of the conductors, such that a laser beam can be employed to selectively cause the ablation of one coating without causing the ablation of other coatings.
Because the insulation removal method is selective, it is not necessary to uncoil the multiple conductors from one another.
The insulating layers on individual conductors may differ in their physical properties, such as melting point or thermal absorption, or may differ in color or thickness, so as to render them selectable.
A device is disclosed that uses a laser beam to completely strip the insulating layer from a desired segment of a conductor.
The device includes means for directing the laser beam at one side of a predetermined segment of the conductor and at least one reflector for directing a portion of the laser beam toward the opposite side of the same segment.
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Metal Working 
