发明名称 |
PROCESS AND APPARATUS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS |
摘要 |
<p>A carcass ply (3) is built on a forming drum (11) by application of a plurality of strip-like elements (13), through the steps of : setting a width of these strip- like elements (13), setting a width of the overlapped part S between two adjacent strip-like elements (13), setting a fitting diameter of the forming drum (11) by calculating a corresponding extension of a radially external laying surface (14), calculating a whole number (n) of strip-like elements (13) to be applied. The whole number (n) of strip-like elements (13) is applied by rotating the forming drum (11) around a geometric rotation axis (X-X) thereof, and applying pairs of strip-like elements (13) by means of a first laying unit (18) and a second laying unit (19) located close to opposite portions of the forming drum (11) relative to the geometric rotation axis (X-X). When the calculated whole number (n) of strip-like elements (13) is an odd number, before at least one application step, the first laying unit (18) is shifted along an adjustment path (C-C) orthogonal to the geometric rotation axis (X-X) and substantially tangent to the radially external laying surface (14) of the forming drum (11).</p> |
申请公布号 |
WO2009068939(A1) |
申请公布日期 |
2009.06.04 |
申请号 |
WO2007IB54875 |
申请日期 |
2007.11.30 |
申请人 |
PIRELLI TYRE S.P.A.;MARCHINI, MAURIZIO;AMURRI, CESARE EMANUELE;CANTU', MARCO;MANCINI, GIANNI;SGALARI, GIORGIA |
发明人 |
MARCHINI, MAURIZIO;AMURRI, CESARE EMANUELE;CANTU', MARCO;MANCINI, GIANNI;SGALARI, GIORGIA |
分类号 |
B29D30/16;B29D30/00;B29D30/30 |
主分类号 |
B29D30/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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