Method for producing a pneumatic tyre
AssigneeContinental Reifen Deutschland GmbH
InventorsRainer Mauruschat, Stephan Knull
Life of this patent
Estimating the term…
Abstract
A method, device, system and a computer product for producing a pneumatic tire are disclosed. The method comprising placing the inner layer and the carcass ply on a tire building drum and on a supporting ring with a bladder, moving core fixings radially to a larger radius, where the radius to which the core fixings are moved is greater than the unexpanded radius of the tire building drum, moving the core fixings radially to a smaller radius, forming tire shoulders by expanding the tire building drum, setting a bead core on the carcass ply at the drum shoulder, fixing the bead core by the radially movable core fixing, turning up the carcass ply and the inner layer by a bladder.
Claims14
A method for producing a pneumatic tire with an inner layer, a carcass ply, a bead core, a tire belt and a tread strip, the method comprising:
- a) placing the inner layer and the carcass ply on a tire building drum and on a supporting ring with a bladder,
- b) moving core fixings radially to a larger radius, where the radius to which the core fixings are moved is greater than the unexpanded radius of the tire building drum,
- c) moving the core fixings radially to a smaller radius, where the radius to which the core fixing is moved is not greater than the unexpanded radius of the tire building drum,
- d) forming tire shoulders by expanding the tire building drum,
- e) setting a bead core on the carcass ply at the drum shoulder,
- f) fixing the bead core by the radially movable core fixing,
- g) turning up the carcass ply and the inner layer around the bead core by filling a bladder, and
- h) finishing the green tire.
A tire building system comprising:
- a tire building drum on a supporting ring with a bladder;
- a processor having instructions executed to:
- place an inner layer and a carcass ply on the tire building drum and on the supporting ring with a bladder;
- move core fixings radially to a larger radius;
- move the core fixings to a smaller radius;
- expand the tire building drum to form tire shoulders;
- set a bead core on the carcass ply at the drum shoulder;
- fix the bead core by the radially movable core fixing;
- and
- turn up the carcass ply and the inner layer around the bead core by filling the bladder.
A tire building system comprising:
- a building drum having an unexpanded state;
- bladders arranged to a first side of the building drum;
- core fixings arranged to a second side of the building drum and arranged in a radial direction of the building drum;
- wherein the bladders are located on a radius smaller than a radius of the building drum;
- wherein the core fixings are configured to move radially outward to cause the bladder and an inner layer to move radially outward and cause axially outer ends of the inner layer and axially outer ends of a carcass ply to move toward each other.
Dependencies are inferred from the claim text.