Sumitomo Rubber Industries Limited

Susumu Suga

Satoru Kokubu

Susumu Itou

Kazuo Satou

Kazuo Sato

Susumu Ito

A methods and an apparatus for applying the belt-shaped bead filler on the bead core with apex. The method comprises the the steps of: rotating a bead core with an apex together with a belt-shaped bead filler; mounting the bead filler on the internal circumferential surface in an approximately cylindrical shape so as to form an overlapping portion; joining at least a part of the overlapping portion; folding up the cylindrical bead filler on both sides of apex and bead core and press-fitting so as to unify them. The apparatus comprises bead supporting means for supporting rotatably a bead core with an apex, bead filler guide means having a movable table to mount a starting edge of the bead filler against the internal circumferential surface of the bead core, bead filler cutting means for cutting the bead filler, bead rotating means for rotating the bead core with the bead filler, bead filler joining means for joining at least a part of overlapping portions, bead filler folding-up means for folding up the bead filler and bead filler press-fitting means for adhering the bead filler to the both side faces of the apex and bead core. Thereby, since the belt-type bead filler is folded up after being formed in the shape of cylindrical and the overlapping portion being jointed on both sides of the bead core, it hence becomes possible to enhance the quality of tire by preventing the formation of staggered joint and wrinkles.

Method for applying bead flipper

A method and an apparatus for applying the belt-shaped bead filler on the bead core with apex. The method comprises the the step of: rotating a bead core with an apex together with a belt-shaped bead filler; mounting the bead filler on the internal circumferential surface in an approximately cylindrical shape so as to form an overlapping portion; joining at least a part of the overlapping portion; folding up the cylindrical bead filler on both sides of apex and bead core and press-fitting so as to unify them. The apparatus comprises bead supporting means for supporting rotatably abead core with an apex, bead filler guide means having a movable table to mount a starting edge of the bead filler against the internal circumferential surface of the bead core, bead filler cutting means for cutting the bead filler, bead rotating means for rotating the bead core with the bead filler, bead filler joining means for joining at least a part of overlapping portions, bead filler folding-up means for folding up the bead filler and bead filler press-fitting means for adhering the bead filler to the both side faces of the apex and bead core. Thereby, since the belt-type bead filler is folded up after being formed in the shape of cylindrical and the overlapping portion being jointed on both sides of the bead core, it hence becomes possible to enhance the quality of tire by preventing the formation of staggered joint and wrinkles.

Method and apparatus for applying bead filler

In manufacture of an automobile tire, a method and a device for making a bead apex/bead ring assembly. More particularly, a method and a device for automatically applying an extruded belt-like rubber material generally referred to as 'bead apex' or 'bead filler' onto a core material referred to as 'bead ring' which is previously mounted on a circular holding device referred to as 'former' to make a bead ring/bead apex assembly. In the proposed method and device, the 'apex' is drawn out from an extruder or a roll and fed to the 'bead ring' and, then it is wound around and bonded to the outer periphery of the 'bead ring' with rotation of the 'former', and at least the leading end of the apex is caught and restrained by a holding device during at least a period from the start to the end of the apex applying process.

Growing community of inventors

Fukushima, Japan

Susumu Suga