Method and apparatus for forming a core of plies, belts and beads and for positioning the core in a mold for forming an elastomeric tire
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United States of America Patent
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Aug 22, 2006
Grant Date -
Feb 2, 2006
app pub date -
Aug 2, 2004
filing date -
Aug 2, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for forming a core of plies, belts and beads and for positioning the core in a mold for forming an elastomeric tire. The core is built up on a mandrel of the inner mold that is formed from hard foam core segments positioned between top and bottom hub plates, around a center hub that includes flow passages formed therethrough and through the hub plates. Plies for building the core are formed as a woven sleeve for passage along an expander cone and over the mandrel whereon a separator has been positioned, and a bead is passed over each sleeve end that receives a bead centering plate fitted through the sleeve, capturing the bead and positioning it on the mandrel side and provides for folding the plies end over the bead and up each mandrel side. Similarly, a belt or belts, formed as a weave of belt cords, is passed along an expander cone and onto the mandrel crown, with separators positioned between the mandrel, plies and belt or belts, and above a final belt, and a tire core is wound around the crown, from one side to the other.
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