Sumitomo Rubber Industries Limited

Yuichi Takai

Masayuki Sakamoto

Takayuki Nagase

Saki Okudaira

Kotaro Hirose

A tire repairing apparatus includes: a tire support portion rotatably supporting a pneumatic tire; and an application mechanism configured to apply an additive that has a softening effect, to a tread portion of the pneumatic tire supported by the tire support portion, thereby causing the additive to permeate into the tread portion.

Tire processing apparatus, tire repairing apparatus, repair sheet, tire repairing method, and tire manufacturing method

To accurately cut a ply for a tire. It is a cutting devicefor cutting a plyfor a tire in which a plurality of cordsparallelly arranged at fixed pitches are coated with an unvulcanized topping rubber. It has a pitch increasing meansfor increasing the pitches of the cordsby pressing the plyfrom a second surfaceside to a first surfaceside of the plyso as to stretch the plytoward the first surfaceside; and a ply cutting meansdisposed on the first surfaceside of the ply, for cutting the stretched portion of the plyalong the cords

Cutting device

A belt drum devicefor forming a beltincludes a drum baserotatable around a drum rotational axis () and belt support portionsarranged outside the drum baseand capable of extending and contracting. Each belt support portionincludes a first link plateand a second link plateboth rotatable and each having an outer peripheral surfacearound which the beltis wound. The outer peripheral surfacein a contracted state includes a flat surface portionextending straight in a drum axial direction on an outer-end side and an arc-shaped curved surface portioncurved toward the drum rotational axis (). The curved surface portionsof both link platesandin an expanded state are substantially continuous to form a continuous arc regionconvex outwardly in a drum radial direction.

Growing community of inventors

Kobe, Japan

Yuichi Takai