Programmed density of wound coils
AssigneeREELEX Packaging Solutions, Inc.
InventorFrank W. Kotzur
Life of this patent
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Abstract
Apparatus and process for winding filamentary material in a figure 8 configuration including a rotatable spindle for retaining a mandrel upon which the filamentary material is wound; a traverse mechanism for controlling the laying of wound coils on the mandrel; and controlling the advance of the wound layers on the mandrel in accordance with the rotation of the spindle and the movement of the traverse mechanism to vary the angular displacement of the wound coil so that the number of crossovers of succeeding layers of the wound coils increases as the winding process progresses, thereby increasing the density of the wound coils.
Claims14
Apparatus for winding filamentary material in a figure 8 configuration, comprising:
- a rotatable spindle for retaining a mandrel upon which the filamentary material is wound;
- a traverse mechanism for controlling the laying of wound coils on the mandrel;
- means for controlling the wound layers on the mandrel in accordance with the rotation of the spindle and the movement of the traverse mechanism to vary the angular displacement, radial displacement between successive coils, of the wound coil so that the number of cross-overs of succeeding layers of the wound coils increases as the winding process progresses, the advance of the wound coil, thereby increasing the density of the wound coils;
- wherein the advance, φ1, is determined from the following equations to determine the angular displacement of the coil:
- φ=COS−1(Rm/(Rm+D));
- (1)
- and where:
- Rm=Radius of the mandrel;
- D=Diameter of the filamentary material;
- and
- φ/cos[24]=φ1 (2).
A process for winding filamentary material in a figure 5 configuration, comprising:
- rotating a spindle retaining a mandrel upon which the filamentary material is wound;
- moving a traverse mechanism for laying of wound coils on the mandrel;
- controlling the wound layers on the mandrel in accordance with the rotation of the spindle and the movement of the trayerse mechanism to vary the angular displacement, radial displacement between successive coils, of the wound coil so that the number of cross-overs of succeeding layers of the wound coil increases as the winding process progresses, the advance of the wound coil, thereby increasing the density of the wound coils;
- and
- wherein in the step of controlling the advance φ1, is determined from the following equations to determine the angular displacement of the coil:
- φ=COS−1(Rm/(Rm+D));
- and where:
- Rm=Radius of the mandrel;
- D=Diameter of the filamentary material;
- and
- φ/cos[24]=φ1.
A package of filamentary material wound in a figure 8 configuration and wherein the number of crossovers of the filamentary material in succeeding layers increase so that the density of the wound coil increases with increasing diameter of the package, whereby the length of material wound for a given diameter of the wound material is greater than if the number of cross-overs remained constant and made by the process, comprising:
- rotating a spindle retaining a mandrel upon which the filamentary material is wound;
- moving a traverse mechanism for laying of wound coils on the mandrel;
- controlling the wound layers on the mandrel in accordance with the rotation of the spindle and the movement of the traverse mechanism to vary the angular displacement, the advance of the wound coil, of the wound coil so that the number of cross-overs of succeeding layers of the wound coil increases as the winding process progresses, the advance of the wound coil, thereby increasing the density of the wound coils;
- and
- wherein in the step of controlling the advance φ1, is determined from the following equations to determine the angular displacement of the coil:
- φ=COS−1(Rm/(Rm+D));
- and where:
- Rm=Radius of the mandrel;
- D=Diameter of the filamentary material;
- and
- φ/cos[24]=φ1.
Dependencies are inferred from the claim text.