Tire building apparatus

Claim 2

TIRE BUILDING APPARATUS FOR APPLYING NARROW STRIP CIRCUMFERENTIALLY ABOUT A TIRE BUILDING DRUM COMPRISING A STRIP-APPLYING WHEEL HAVING A CIRCUMFERENTIAL SURFACE FOR TRANSFERRING STRIP TO A CARCASS ON THE DRUM, THE WHEEL BEING ROTATABLE ABOUT AN AXIS PARALLEL TO THE DRUM AXIS, A PLURALITY OF ANOTHER GOOVES OPENING TO SAID SURFACE, A STRIP CONTROL PALM MOUNTED TO ROCK ABOUT AN AXIS FIXED PARALLEL TO THE WHEEL AXIS, THE PALM HAVING A STRIP CONVEYING GUIDE EXTENDING TANGENT TO THE TRANSFER SURFACE AND HAVING FINGERS EXTENDING RESPECTIVELY INTO SAID GROOVES, A KNIFE FIXED ADJACENT SAID WHEEL, EXTENDING TRANSVERSELY OF THE TRANSFER SURFACEE AND CLOSE TO THE TERMINALS OF SAID FINGERS,AND MEANS FOR ROCKING SAID PALM TO MOVE SAID FINGERS OUT OF THE GOOVES TO LIFT SAID STRIP FROM THE TRANSFER SURFACE TO SERVING RELATION WITH SAID KNIFE.

Claim 3

Tire building apparatus for applying narrow strip on an incomplete tire carcass carried on a tire building drum, comprising a strip-applying wheel mounted for rotation about an axis parallel to the axis of the tire building drum and movable in a plane normal to the drum axis between a remote position and a position defining a strip-applying nip with said carcass; said wheel having a pair of circumferential ridges providing a cylindrical strip transfer surface and spaced axially of said wheel to define a plurality of annular grooves about the wheel; a multiplicity of strip penetrating needle points fixed in said ridges to extend radially of said strip transfer surface, a shaft mounting said wheel for rotation, bearing means rotatably supporting said shaft; a frame including a pair of parallel spaced side plates carrying said bearing means, an elevator plate, and a plurality of slide rods extending parallel to said plane between the respective side plates and said elevator plate; a pair of support beams extending parallel to the axis of said drum and a base slidably supported on said beams and adjustably fixed thereon relative to the axial length of the drum, said base having a plurality of slides each slidably accommodating one of said plurality of slide rods, a lift cylinder having its mounting flange secured to said elevator plate and its piston rod secured to said base and operable to move said wheel toward and away from said drum, a strip control palm for controlling advance of the strip toward said wheel, said palm having strip guide surface tangent to the strIp transfer surface of said wheel adjacent said nip and a plurality of fingers each extending in one of said grooves toward said nip and beneath said strip, a spring plate fixed on said palm and biased toward said fingers to control said strip therebetween, a hot knife fixed on said frame close to said nip to cooperate with said fingers to sever said strip parallel to and between adjacent cord elements therein, a rock shaft carrying said palm to rock about an axis parallel to the wheel axis, an air cylinder operable to rock the rock shaft and palm to move said fingers out of said grooves to lift said strip into severing relation with said knife, and rotation responsive means emitting a signal at a predetermined angle of rotation of the drum and effective to actuate said air cylinder.

Claim 4

Tire building apparatus for applying narrow strip on an incomplete tire carcass carried on a tire building drum, comprising a strip-applying wheel mounted for rotation about an axis parallel to the axis of the tire building drum and movable in a plane normal to the drum axis between a remote position and a position defining a strip-applying nip with said carcass; said wheel having a pair of circumferential ridges providing a cylindrical strip transfer surface and spaced axially of said wheel to define a plurality of annular grooves about the wheel; a multiplicity of strip penetrating needle points fixed in said ridges to extend radially of said strip transfer surface, a shaft mounting said wheel for rotation, bearing means rotatably supporting said shaft; a frame including a pair of parallel spaced side plates carrying said bearing means, an elevator plate, and a plurality of slide rods extending parallel to said plane between the respective side plates and said elevator plate; a pair of support beams extending parallel to the axis of said drum and a base slidably supported on said beams and adjustably fixed thereon relative to the axial length of the drum, said base having a plurality of slides each slidably accommodating one of said plurality of slide rods, a lift cylinder having its mounting flange secured to said elevator plate and its piston rod secured to said base and operable to move said wheel toward and away from said drum, a strip control palm for controlling advance of the strip toward said wheel, said palm having strip guide surface tangent to the strIp transfer surface of said wheel adjacent said nip and a plurality of fingers each extending in one of said grooves toward said nip and beneath said strip, a spring plate fixed on said palm and biased toward said fingers to control said strip therebetween, a hot knife fixed on said frame close to said nip to cooperate with said fingers to sever said strip parallel to and between adjacent cord elements therein, a rock shaft carrying said palm to rock about an axis parallel to the wheel axis, an air cylinder operable to rock the rock shaft and palm to move said fingers out of said grooves to lift said strip into severing relation with said knife, and rotation responsive means emitting a signal at a predetermined angle of rotation of the drum and effective to actuate said air cylinder.