| 摘要 |
A method of manufacturing a bead reinforcement structure (10) of at least one steel wire (11) which makes several windings. The windings build several layers, amongst which a radially inner layer and a radially outer layer. Each of the layers are built of one or more of the windings so as to form a polygonal cross-sectional form. The wire has a leading end (23) and a trailing end. The method comprises the steps of: (a) starting from the leading end, preforming at least one steel wire so that the steel wire forms a first winding in a first layer being different from the radially inner layer; (b) varying the preforming so that a further winding is formed in the first layer or in another layer. The advantage of the invention is a simplified method of manufacturing a more efficient bead reinforcement structure. |
