Apparatus for manufacturing a tire having the sidewalls ends ove

Details Apparatus for manufacturing a tire having the sidewalls ends ove Apparatus for manufacturing a tire having the sidewalls ends ove

1998-09-11

2000-08-08

Knable, Geoffrey L.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156403, 1564214, B29D 3030

Patent

active

060986867

ABSTRACT:
A method and apparatus for manufacturing a tire in which the sidewalls overlap the ends of the tread band. The method comprises the steps of inserting an extensible tubular releasing element around the carcass plies at each end of an assembly drum, wrapping the sidewalls on these elements, applying another tubular element on the sidewalls, and overturning the tubular elements to spread apart the sidewalls in an open position aside of the assembly drum. The carcass, in the form of a first-step cylindrical sleeve comprising open sidewalls, is transferable to a (second-step) forming drum to be torically formed against a separately prepared assembly comprising the belt pack and the tread band. Next, the band ends are turned down onto the toric carcass and the sidewalls are folded back against the carcass and over the ends of the tread band.

REFERENCES:
patent: 3728194 (1973-04-01), Enders
patent: 4006766 (1977-02-01), Takayanagi et al.
patent: 4923553 (1990-05-01), Nishide et al.
patent: 5087316 (1992-02-01), Sumiuchi et al.
patent: 5380384 (1995-01-01), Tokunaga et al.
patent: 5746860 (1998-05-01), Moriyama

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