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US 5,385,621 AGranted
Tire bead-making method with two winding tension levels
AssigneeThe Goodyear Tire & Rubber Company
InventorRalph W. Golightly
Life of this patent
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Abstract
A plurality of helically wound tire beads are made by winding them on a forming wheel at two predetermined tension levels. The tension levels are generated by a braking pulley and magnetic particle brake in conjunction with a programmable logic controller. The first few turns of wires are made at a relatively low tension level. Subsequent turns are made at a higher tension level. The lower tension level contributes to longer life of the forming wheel assembly.
Claims12
A method of making tire beads on a forming wheel comprising:
- a. attaching an end of a wire to said forming wheel;
- b. initially winding said wire around said forming wheel by rotating said forming wheel a predetermined number of turn, said initial winding being at a first tension level in said wire, said first tension level created by resisting said winding with braking means at a first resistance level;
- and,
- c. continuing said winding at a predetermined second tension level in said wire greater than said first tension level, said second tension level created by resisting said winding with said braking means at a second resistance level greater than said first resistance level after said rotation of said forming wheel said predetermined number of turns whereby the increased resistance of said braking means is resisted by the friction of the revolutions of wire about the forming wheel.
1 more element
A method of making tire beads on a forming wheel comprising:
- a coating a plurality of parallel wires with an elastomeric material and connecting said wires with a web of said material to provide a ribbon;
- b. passing said ribbon over a braking pulley to control the tension in said wires;
- c. slitting said ribbon to separate said parallel wires after passing over said braking pulley;
- d. clamping said wires and guiding them to said forming wheel;
- e. gripping the ends of said wires on said forming wheel;
- f. rotating said forming wheel a predetermined number of turns with low resistance to turning of said braking pulley to provide frictional adherence of said wires to said forming wheel while maintaining low tension in said wires;
- g. increasing the resistance to turning of said braking pulley to provide a predetermined higher tension in said wires as they are wound on said forming wheel;
- h. moving said wires axially of said forming wheel after a predetermined rotation of said forming wheel with said wires under tension to form a plurality of helically wound beads;
- i. stopping said forming wheel;
- j. cutting said trailing ends of said wires;
- k. releasing said leading ends of said wires from said forming wheel;
- and,
- l. removing said formed helical beads from said forming wheel.
10 more elements
Dependencies are inferred from the claim text.