| 摘要 |
Tire-building apparatus embodying combined tire bead holder and ply turnup means having bead placer means embodying bead finger frame means carrying bead-supporting fingers which in a one position of the bead finger frame means hold tire beads concentrically against tire bead shoulders inwardly of outer end portions of tire carcass material supported around first inflatable bag means which provides for displacing the bead finger frame means to another position freeing the bead supporting finger means from the beads while the bead placer means hold the beads against the tire bead shoulders, in which the bead placer means is moved outwardly by further expansion of the first inflatable bag means and the tire beads are further encased in the outer end portions of the tire carcass material, and in which the tire bead holder and ply turnup means are then moved axially to effect displacement of the outer end portions of the tire carcass material on the inflatable bag means to fully encase the beads in the outer end portions of the tire carcass material. The apparatus, as noted, embodying second inflatable bag means operative in association with the first bag means to permit upon inflation of the first inflatable bag means movement of the bead finger from the bead, and the apparatus as first noted in which the tire bead holder and ply turnup means embody sidewall pusher means for applying sidewall components to the tire carcass material after the latter is formed into a substantially torous configuration.
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