Abstract: A vulcanizing device of a vehicle tire includes a lower plate, on which segments shoes are fitted, the segment shoes profile segments are arrangeable in order to form a tread pattern in the tire blank, and a closure ring for moving the segment shoes in the radial direction of the closure ring, which is placed around the segment shoes against the back surfaces of the segment shoes. The closure ring includes wear plates coated with a ceramic coating layer and arranged on the inner surface of the closure ring so that the ceramic coating layers are fitted against the back surfaces of the segment shoes, and/or the lower plate includes wear plates, which are coated with a ceramic coating layer. The wear plates are arranged on the surface of the lower plate so that the ceramic coating layers are fitted against the lower surfaces of the segment shoes.

Abstract: A venting valve (1) for removing air from a vulcanising mould of a vehicle tyre, which comprises a valve body (2) having a venting channel (12), a movable valve insert (3) arranged in the venting channel (12), which valve insert (3) comprises a valve stem (4), one end of which is provided with a valve member (5) for opening and closing the venting channel (12), and a stroke limiter (6) for limiting an opening stroke of the valve insert (3), and a spring member (7) for pressing the valve insert (3) towards an open position, in which air flow through the venting channel (12) is allowed. The stroke limiter (6) comprises a hole (8) provided with an internal thread (9), and the other end of the valve stem (4) is provided with an externally threaded portion (10), which is fastened to the internal thread (9) of the stroke limiter (6).

Abstract: A valve insert (4) for use in an air venting valve (1) of a vulcanizing mould of a vehicle tyre, which valve insert (4) comprises a valve stem (6) arranged to be inserted into a valve sleeve (3) of the air venting valve (1), a first end of which valve stem (6) is provided with a valve disk (7) and a second end of which valve stem (6) is provided with an elastically compressible retainer member (8) for detachably attaching the valve insert (4) to the valve sleeve (3) and for limiting an opening stroke of the valve insert (4). The retainer member (8) comprises a stop surface (14) which is arranged to abut an end surface (16) of the valve sleeve (3) and thus limit the opening stroke of the valve insert (4).

Abstract: A valve insert (4) for use in an air venting valve (1) of a vulcanizing mould of a vehicle tyre, which valve insert (4) comprises a valve stem (6) arranged to be inserted into a valve sleeve (3) of the air venting valve (1), a first end of which valve stem (6) is provided with a valve disk (7) and a second end of which valve stem (6) is provided with an elastically compressible retainer member (8) for detachably attaching the valve insert (4) to the valve sleeve (3) and for limiting an opening stroke of the valve insert (4). The retainer member (8) comprises a stop surface (14) which is arranged to abut an end surface (16) of the valve sleeve (3) and thus limit the opening stroke of the valve insert (4).

Abstract: A vulcanising device of a vehicle tyre includes a lower plate, on which segments shoes are fitted, on which segment shoes profile segments are arrangeable in order to form a tread pattern in the tyre blank to be vulcanised, and a closure ring for moving the segment shoes in the radial direction of the closure ring, which is placed around the segment shoes against the back surfaces of the segment shoes. The closure ring includes wear plates, which are coated with a ceramic coating layer, which wear plates are arranged on the inner surface of the closure ring so that the ceramic coating layers are fitted against the back surfaces of the segment shoes, and/or the lower plate includes wear plates, which are coated with a ceramic coating layer, which wear plates are arranged on the surface of the lower plate so that the ceramic coating layers are fitted against the lower surfaces of the segment shoes.

Abstract: An air venting valve for removing air from a vulcanizing mold of a vehicle tire. The air venting valve includes a valve sleeve, an air venting channel arranged inside the valve sleeve, and a movable inner part arranged in the valve sleeve, which includes a stem, the end of which is provided with a valve disc for opening and closing the air venting channel. The valve disc is against a stop surface of the valve sleeve in a closed position of the air venting valve and in an open position at a clearance from the stop surface. Furthermore, the air venting valve includes a spring member for forcing the inner part towards opening position. The front surface of the valve disc comprises a bulge.

Abstract: An air venting valve for removing air from a vulcanising mould of a vehicle tyre. The air venting valve includes a valve sleeve, an air venting channel arranged inside the valve sleeve, and a movable inner part arranged in the valve sleeve, which includes a stem, the end of which is provided with a valve disc for opening and closing the air venting channel. The valve disc is against a stop surface of the valve sleeve in a closed position of the air venting valve and in an open position at a clearance from the stop surface. Furthermore, the air venting valve includes a spring member for forcing the inner part towards opening position. The front surface of the valve disc comprises a bulge.

Abstract: An air venting valve and method for removing air from a vulcanizing mold of a vehicle tire by the aid of an air venting valve having a body functioning as an air channel and an inner part movable in a longitudinal direction. The body includes a stem and a valve disc disposed at an inner end of the stem on the side of a mold surface, the diameter of the valve disc is larger than the inner diameter of the body. A spring member is arranged in the air venting valve for forcing the inner part in a predetermined position for opening the valve when a blank is removed from the vulcanizing mold. The lower part of the inner part of the body includes an outer thread and in the lower part of the body a respective inner thread for screwing the valve stem in the body.

Abstract: An air venting valve and method for removing air from a vulcanizing mold of a vehicle tire by the aid of an air venting valve having a body functioning as an air channel and an inner part movable in a longitudinal direction. The body includes a stem and a valve disc disposed at an inner end of the stem on the side of a mold surface, the diameter of the valve disc is larger than the inner diameter of the body. A spring member is arranged in the air venting valve for forcing the inner part in a predetermined position for opening the valve when a blank is removed from the vulcanizing mold. The lower part of the inner part of the body includes an outer thread and in the lower part of the body a respective inner thread for screwing the valve stem in the body.

Abstract: An air venting valve for removing air from a vulcanising mould of a vehicle tyre and method for removing air from a vulcanising mould of a vehicle tyre by the aid of air venting valve, in which air venting valve there is a body (2) functioning as an air channel and an inner part (3) moving in its longitudinal direction which body comprises a stem (4), an outer diameter of which is smaller than an inner diameter of the body, and a valve disc (5) at an inner end of the stem on the side of a mould surface, a diameter of which valve disc is larger than the inner diameter of the body, which valve disc supports itself in a closing position of the air venting valve on a stop surface of the body and is in an open position at a clearance from said stop surface, and in which a spring member has been arranged in the air venting valve for forcing the inner part in a predetermined position, particularly for opening the valve to the open position when a blank is removed from the vulcanising mould, and the body is substanti