Method and apparatus for forming cord reinforcement layer for tire
AssigneeBridgestone Corporation
InventorNobuyuki Suda
Life of this patent
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Abstract
A method for forming a cord reinforcement layer for tires, and a cord reinforcement member-forming apparatus for carrying out the method, flexibly allow small-lot tire production and provide tires with high uniformity level, by coating the cords with rubber in advance and attaching the rubber-coated cords one by one onto a tire-forming drum in its circumferential direction.
Claims4
A method for forming a cord reinforcement layer for a tire, wherein a rubber-coated cord with a predetermined length and coated with rubber in advance is attached one by one onto a tire shaping drum in parallel with, or with inclination relative to, the axis of the shaping drum.
A method for forming a cord reinforcement layer for a tire according to claim 1, wherein, when attaching said rubber-coated cord onto the shaping drum, after the rubber-coated cord is laminated in two layers comprising a radially inner layer and a radially outer layer, the rubber-coated cord in the outer layer is press-fitted between the rubber-coated cords in the inner layer.
A cord reinforcement layer-forming apparatus for carrying out the method according to claim 1, for forming a cord reinforcement layer for tires, comprising:
- a cord attaching/cutting machine for successively attaching the rubber-coated cords onto a shaping drum, as well as cutting continuous rubber-coated cord into said predetermined length;
- a relay drum for unwinding cords out of a cord reel and feeding the cords to the cord attaching/cutting machine, a rubber coating machine for continuously coating the rubber-coated cord between the cord reel and the relay drum;
- and a festoon for adjusting excess or shortage of the rubber-coated cord generated between the cord attaching/cutting machine and the relay drum.
Dependencies are inferred from the claim text.