In building a tyre (1), in particular for two-wheeled vehicles, formation of annular stiffening inserts (10) is provided which are incorporated in the carcass structure (2), each close to one of the sidewalls (9). Each annular stiffening insert (10) is made up of a cord of the 3x3x0.175 HE HT type, wound up into coils (10a) disposed radially in side by side relationship with each other, starting from the annular reinforcing structures (4) arranged in the beads until close to a side edge (5a) of the belt structure (5).

A method of manufacturing a rim includes placing at least one braided sleeve on a core dimensioned to define a shape of an internal wall of the rim. The method includes inserting the braided sleeves placed on the core, inside a mold that is dimensioned to define a shape of an external wall shape of the rim. The method further includes injecting a resin inside the mold to contact the mold and impregnate the sleeves and other layers with resin. The method also includes curing the resin to form the internal and external walls of the rim and obtain a cured rim having the core connected thereto. The method further includes removing the cured rim and core from the mold and melting the core to get it out of the rim.

The invention relates to a toroidal forming drum and a process for building tyres. The toroidal forming drum (23) is expanded within a shaped carcass sleeve (12), for supporting the carcass sleeve (12) against an abutment surface ("S") externally provided by the forming drum (23). An elementary semi-finished product (54a, 54b) is applied around the shaped carcass sleeve (12), by pressing said elementary semi-finished product (54a, 54b) towards the abutment surface ("S"). The abutment surface ("S") has circumferential rows of solid portions (40) alternated with hollow portions (41). The solid portions (40), arranged along axially opposite circumferential edges of the abutment surface ("S"), have a transverse size comprised between 10% and 60% of a transverse size presented by the solid portions (40) arranged in proximity to an axial centreline plane of the abutment surface ("S").

内外のコア片（５ｉ、５ｏ）からのカーカスプライの抜けを抑え、操縦安定性を向上させる。カーカスプライの半径方向内端部は、ビードコアの廻りで折り返されることなく内外のコア片（５ｉ、５ｏ）間で狭持される。内外のコア片（５ｉ、５ｏ）は、ビードコード（１０ｉ、１０ｏ）がタイヤ軸芯廻りで渦巻き状に巻き重ねた渦巻き体からなる。内のコア片（５ｉ）では、ビードコード（１０ｉ）の最終の撚り方向は、タイヤ軸方向外側からの側面視におけるビードコード（１０ｉ）のタイヤ軸芯廻りの巻回方向と同方向である。又外のコア片（５ｏ）では、ビードコード（１０ｏ）の最終の撚り方向は、ビードコード（１０ｏ）の巻回方向と逆方向である。

　１つのライン上で、サイズ違いの複数サイズのタイヤを同時にかつランダムに形成する。　軌道に沿って配される複数の作業ステーションに配する部材組付け装置により、軌道上を移動する剛性中子の外表面に、タイヤ構成部材を組み付ける生タイヤ形成行程と、生タイヤを剛性中子ごと加硫金型内に投入する加硫行程とを具える。各作業ステーションに剛性中子が搬入される毎に、剛性中子のサイズを識別し、その識別情報と、制御装置に予め記憶させたサイズ毎の部材材料の貼付条件のデータとから、識別されたサイズに応じた貼付条件のデータを求める。そのデータに基づいて部材組付け装置を制御する。

A process for building a tyre comprises: - supplying a fluid flow through a first nozzle (31; 131) of a pneumatic sensor (30; 130) which is provided in the region of a head (23) of an extruder (20), the fluid flow being directed in a flow direction (A; B) which does not interfere with a second nozzle (32; 132) of the pneumatic sensor which is connected to a pressure measuring unit (33), - starting to extrude a continuous elongate element (21) through an opening (24) which is formed in the head of the extruder, - redirecting the fluid flow via the continuous elongate element (21) into the second nozzle of the pneumatic sensor, - detecting a variation in pressure in the second nozzle (32; 132), thereby determining the presence of the continuous elongate element (21) output from the opening, - after a predetermined time from the detection of the variation in pressure, causing a forming drum (2) to rotate about its own axis of rotation (X), - distributing the continuous elongate element over a radially external surface (3) of the forming drum (2).

Provided is a tire mold. The tire mold may comprise a top primary plate, a bottom primary plate, a first sidewall mold part, and a second sidewall mold part. The first sidewall mold part may comprise a first sidewall mold plate adapted for interchangeable engagement with both the top primary plate and the bottom primary plate, or a first sidewall removable component adapted for interchangeable engagement with both the top primary plate and the bottom primary plate. The second sidewall mold part may comprise a second interchangeable sidewall mold plate adapted for interchangeable engagement with both the top primary plate and the bottom primary plate, or a second sidewall removable component adapted for interchangeable engagement with both the top primary plate and the bottom primary plate.

　剛体コアに装着された生タイヤが、カーカスプライの折り返し部分離れて開いてしまう故障を防止することのできるタイヤの製造方法およびその製造方法に用いられる加硫モールドを提供する。生タイヤ１０を予熱するのに先立って、生タイヤ１０のビード部１１のそれぞれを、タイヤ幅方向外側から押さえるビード押さえリング２を剛体コア１に取り付けるタイヤの製造方法である。

The constituent elements (4, 4a, 5) of a carcass structure (3) of a tyre (2) are formed by laying elementary components on a building support (9) comprising an inflatable bladder (14) set in an inflated condition in which it substantially reproduces the inner configuration of the carcass structure (3) to be obtained. A belt structure (6) carrying a tread band (7), both produced separately, is coaxially disposed around the carcass structure (3) formed on the building support (9), and applied thereto following a radial expansion of the inflatable bladder (14). In a vulcanisation mould (13) the building support (9) is submitted to an over-inflation step to press the tyre (2) against the inner walls of the mould (13). The circumferential edges (14a) of the inflatable bladder (14) are in engagement with respective anchoring flanges (15, 16) with possibility of movement in a radial direction, so as to be submitted to an elastic expansion during the over-inflation step.

Automatic plant (1) for producing tyres comprising: a manufacturing unit (2) having a plurality of work stations (6, 7, 8, 9, 10), each designed to assemble at least one corresponding structural component of the processed tyres; a plurality of devices (R2, R3, R4, R5, R6, R7, R8) for transferring the processed tyres from one work station (6, 7, 8, 9, 10) to another work station (6, 7, 8, 9, 10) and for moving the processed tyres within the same work station (6, 7, 8, 9, 10); a vulcanizing unit (3) comprising at least one vulcanizing mould (34, 35, 36, 37, 38, 39) for the processed tyres; wherein said at least one structural component is supplied to at least one of said work stations (6, 7, 8, 9, 10) from a machine (711, 721) for producing said structural component through a dynamic storage unit (200, 300).