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
US7094303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2004 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Apr 26, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/3228
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.