PROCESS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS
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Accused Products
Abstract
In the building of a carcass structure for tyres of vehicle wheels, the step of reinforcing with a loop at least one annular anchoring structure associated at the axially opposite end edges of a carcass ply is carried out on at least one radially expandable/contractable service drum and includes the steps of: setting the service drum to a predetermined radial dimension selected according to the fitting diameter of the tyre to be manufactured, depositing the loop on the service drum, loading the annular anchoring structure onto the service drum in a radially outer position with respect to the loop, radially expanding the service drum up to lock in position the annular anchoring structure, rotating the service drum about a longitudinal axis thereof and, during the rotation, turning the loop up about the annular anchoring structure.
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Citations
64 Claims
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1-32. -32. (canceled)
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33. A process for manufacturing a tyre for a vehicle wheel, comprising the step of building a carcass structure comprising at least one carcass ply associated, at axially opposite end edges thereof, with respective annular anchoring structures, wherein the step of building the carcass structure comprises the step of reinforcing said at least one annular anchoring structure with a loop, said reinforcement step being carried out on at least one radially expandable/contractable service drum and comprising the steps of:
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a) setting the service drum to a predetermined operative radial dimension selected according to a fitting diameter of a tyre to be manufactured; b) depositing the loop on an annular portion of an annular outer surface of the service drum; c) loading an annular anchoring structure onto the service drum in a radially outer position with respect to the loop; d) radially expanding the service drum up to lock in position the annular anchoring structure; e) rotating the service drum about a longitudinal axis thereof; f) during rotation of the service drum turning the loop up about the annular anchoring structure so as to form a reinforced annular anchoring structure; and g) unloading the reinforced annular anchoring structure from the service drum. - View Dependent Claims (34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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35. A process for reinforcing with a loop an annular anchoring structure of a tyre for a vehicle wheel, comprising the steps of:
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a) setting a radially expandable/contractable service drum to a predetermined operative radial dimension selected according to a fitting diameter of a tyre to be manufactured; b) depositing the loop on an annular portion of an annular outer surface of the service drum; c) loading the annular anchoring structure onto the service drum in a radially outer position with respect to the loop; d) radially expanding the service drum up to lock in position the annular anchoring structure; e) rotating the service drum, about a longitudinal axis thereof; f) during rotation of the service drum, turning the loop up about the annular anchoring structure so as to form a reinforced annular anchoring structure; and g) unloading the reinforced annular anchoring structure from the service drum.
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50. An apparatus for reinforcing with a loop an annular anchoring structure of a tyre for a vehicle wheel, comprising:
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at least one service drum having a longitudinal axis; a device for feeding the loop toward the service drum; a device for loading/unloading the annular anchoring structure onto/from the service drum; and a device for turning the loop up about the annular anchoring structure, to form a reinforced annular anchoring structure, wherein the service drum is radially expandable/contractable with respect to said longitudinal axis so as to be adjustable to a plurality of predetermined radial dimensions selected according to a fitting diameter of a tyre to be manufactured. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification