Tire building apparatus

Abstract

Abstract A tire building apparatus embodying an expandable and contractable intermediate drum, inboard and outboard end drum assemblies at opposite ends of the intermediate drum for initially supporting loosely thereon a cylindrical tire carcass having tire beads embedded at opposite ends thereof, tire bead supporting and locating means at the inner ends of the end drums in an arrangement including first carrier means and in which the tire bead supporting and locating means may be positioned with respect to the first carrier means in equidistant axially spaced apart relation with respect to the transverse centerline of the intermediate drum, stop means providing for initial slipping engagement of the tire bead supporting and locating means with the tire carcass material at the tire beads to center the cylindrical tire carcass material and encased tire beads to center both radially and axially the tire carcass and the tire beads on the tire building apparatus, holding pin means for holding the tire carcass material and the tire beads in such centered position as that upon expansion of the intermediate drum the tire carcass material and tire beads remain in the aforesaid centered position and the tire carcass material is maintained under tension between the tire beads. A tire building machine having such additional features as the provision of preliminary tire carcass locating means at the inner end of the inboard drum for preliminarily positioning a tire carcass generally centrally on the apparatus, tapered shroud means at the outer end of the outboard end drum for facilitating position of a tire carcass, and resilient stop means associated with the outboard drum assembly for limiting inward movement of the intermediate drum.

Inventors

• 👤 E Mallory

Bibliographic Details