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    • 2. 发明申请
    • PROCESS AND APPARATUS FOR MANUFACTURING PNEUMATIC TYRES
    • 制造气动轮胎的工艺和装置
    • WO2008129363A1
    • 2008-10-30
    • PCT/IB2007/051481
    • 2007-04-23
    • PIRELLI TYRE S.P.A.PIANTANIDA, Pier GiuseppeCASALI, AndreaMARIANI, Fiorenzo
    • PIANTANIDA, Pier GiuseppeCASALI, AndreaMARIANI, Fiorenzo
    • B29D30/00B29D30/20
    • B29D30/244B29C2035/0283B29D30/0005B29D30/20
    • In a process of manufacturing pneumatic tyres, a carcass sleeve (14) is made which comprises at least one carcass ply (3) provided with axially opposite flaps (3a) turned up around annular anchoring structures (5), so as to form respective loops (16). An outer sleeve (35) is positioned around the carcass sleeve (14) and the latter is radially expanded in order to cause application of same against a radially internal surface of the outer sleeve (35). After each of the end flaps (3a) has been turned up and before radial expansion, only a portion (25) belonging to each of the loops (16) and extending substantially parallel to the respective annular anchoring structure (5) is submitted to a step of carrying out heating under pressure, to make each loop (16) integral with the annular anchoring structure (5) and prevent the turned- up ply/plies from even partly slipping off, during the subsequent radial-expansion step of the carcass sleeve (14) and vulcanisation step of the tyre (2).
    • 在制造充气轮胎的过程中,制造胎体套筒(14),其包括至少一个胎体帘布层(3),胎体帘布层(3)设置有围绕环形锚定结构(5)向上折叠的轴向相对的折板(3a),以形成相应的环 (16)。 外套筒(35)围绕胎体套筒(14)定位,并且后套筒(14)径向膨胀,以便使其相对于外套筒(35)的径向内表面施加。 在每个端翼(3a)已经向上并且在径向膨胀之前,仅属于每个环(16)并且基本上平行于相应的环形锚定结构(5)延伸的部分(25)被提交到 在压力下进行加热的步骤,以使每个环(16)与环形锚定结构(5)成一体,并且在随后的胎体套筒的径向膨胀步骤期间防止翻起的帘布层/帘布层均匀地部分地脱落 (14)和轮胎(2)的硫化步骤。