Vmi Holland B.v.

Dave Papot

Martin De Graaf

Tom Regterschot

A turn-up section for a tire building drum, includes a plurality of turn-up arms distributed circumferentially about a central axis and an arm support for supporting the turn-up arms with respect to a base, wherein the turn-up arms are rotatable with respect to the arm support from an arms-down position towards an arms-up position in response to the movement of the arm support in an arm drive direction. Each turn-up arm comprises a hinge pin for rotatably coupling the respective turn-up arm to the arm support. The arm support includes a hinge seat for removably receiving the hinge pin of the respective turn-up arm. The hinge pin is retained in the hinge seat by one or more biasing members. The hinge pin of the turn-up arm is removable from the hinge seat in a radial direction with respect to the central axis by counteracting the bias of the one or more biasing members.

Turn-up section and tire building drum comprising said turn-up section

Disclosed are to a transfer apparatus and a method for transferring plies onto a carcass package on a tire building drum. The transfer apparatus includes a transfer ring with first ring segments and a frame that extends in a circumferential direction about a central axis for holding the first ring segments in first angular positions distributed in the circumferential direction along the frame, wherein the first ring segments are movable relative to the frame in a radial direction from a first radial distance to a second radial distance from the central axis that is smaller than the first radial distance. The transfer apparatus further includes a first rolling device that is positionable in a second angular position interposed between the first angular positions, and a second ring segment that is positionable in the second angular position at the second radial distance from the central axis.

Transfer apparatus and method for transferring one or more plies onto a carcass package on a tire building drum

Disclosed is a tire building drum with a first bladder or sleeve, wherein the tire building drum has a first release member and a first actuator for generating a relative movement between the first release member and the drum body to move the first release member in a first release direction with respect to the drum body from a first fixation position in which the first release member fixates the first circumferential edge of the first bladder or sleeve to the drum body into a first release position in which the first release member releases the first circumferential edge from the drum body. Also disclosed is a method for operating the aforementioned tire building drum.

Tire building drum with a bladder or sleeve

Disclosed are a transfer apparatus and a method for transferring plies onto a carcass package on a tire building drum. The transfer apparatus includes a transfer ring with first ring segments and a frame that extends in a circumferential direction about a central axis for holding the first ring segments in first angular positions distributed in the circumferential direction along the frame, wherein the first ring segments are movable relative to the frame in a radial direction from a first radial distance to a second radial distance from the central axis that is smaller than the first radial distance. The transfer apparatus further includes a first rolling device that is positionable in a second angular position interposed between the first angular positions, and a second ring segment that is positionable in the second angular position at the second radial distance from the central axis.

Disclosed is a tire building drum and a method for building a tire, wherein the tire building drum includes a crown section and a bead-lock section, wherein the bead-lock section defines a bead-lock position, wherein the crown section includes crown segments movable with respect to the base from a crown-down position into a crown-up position in a crown-up direction, wherein the crown segments together form a crown surface, a leading edge and a shoulder, wherein the tire building drum further includes a sleeve that extends around the crown segments in the circumferential direction, wherein the sleeve includes a first circumferential edge that is fixed to the crown segments at a side of the shoulder facing away from the bead-lock section, a second circumferential edge that is located between the shoulder and the bead-lock position, wherein the second circumferential edge is unfixed at least when the crown segments are in the crown-down position.

Tire building drum and method for tire building

A tire building drum has a crown section with crown segments which are movable from a crown-down position into a crown-up position, wherein the crown segments together form a crown surface facing outwards in the radial direction, a leading edge and a shoulder that forms the transition from the crown surface to the leading edge, wherein the shoulder leaves a gap, wherein the tire building drum further includes a plurality of support members that extend in said gap, wherein each crown segment has a first side and a second side, wherein each crown segment further includes one or more guide channels, wherein each guide channel is arranged for receiving a respective one of the plurality of support members in the respective crown segment between the first side and the second side. Also disclosed is a method for tire building using the aforementioned tire building drum.

A method for manufacturing a tyre is provided, in particular a run-flat tyre. The method includes providing a drum with a first shrink section and a second shrink section. Each shrink section is provided with a shrink surface that is radially movable. The method includes moving the shrink surfaces radially inwards with respect to the central axis from a level position to a shrink position in which the drum, at the shrink surfaces, has a circumference with a second diameter that is smaller than the first diameter, while creating a partial vacuum between the shrink surfaces and a first tyre layer at the first shrink section and the second shrink section. The method further includes shrinking the first tyre layer onto the shrink surfaces in the shrink position under the influence of the partial vacuum. A drum for use in the aforementioned method is also disclosed.

Method and drum for manufacturing a tyre, in particular a run-flat tyre

Disclosed is a tire building drum and method for operating the tire building drum, which tire building drum include a left section, a right section, a center section, and a support member for supporting the center section in the radially outward direction. The support member is movable together with the center section in the radially outward direction. The tire building drum further includes a blocking device for blocking the support member against movement in a radially inward direction when the center section is in the expanded position.

Tire building drum and method for operating said tire building drum

Disclosed is a first drum half together with a second drum half forming a tire building drum of a tire building machine, and a method for operating the machine. The machine includes a first drive member and a second drive member movable in the axial direction inside the drum shaft. The first drum half includes a base movable over the drum shaft in an axial direction, a crown-up section having a plurality of crown segments and a displacement member for displacing the crown segments in a crown-up direction, wherein the first drum half further includes a first coupling member for coupling the first drive member to the base to drive the movement of the base and a second coupling member for coupling the second drive member to the displacement member to drive the displacement of the crown segments.

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Epe, Netherlands

Dave Papot