The curing press for a tire blank includes a frame and a plurality of circumferentially distributed segments which are capable of forming a tread for the tire. Each of the segments has at least one opening. For each segment, at least one tie rod is mounted slidably and rotatably in the opening of the segment on the one hand and hinged to the frame on the other hand. The mounting and hinging form the only connections of the tie rod to elements of the press other than the tie rod.

A heating press (1) for vulcanizing a vehicle tire under a vacuum, having a heating press upper part (3) and a heating press lower part (6), wherein a circular-ring-shaped hood upper part (4) with a container (2) having the mold parts (14, 16, 17, 18, 21) of a vulcanizing mold is arranged on the heating press upper part (3), and wherein the heating press upper part (3) can be moved in an axial direction (P1) in such a way that the hood upper part (3) can be moved onto the heating press lower part (6) to form a closed hood interior space (12), wherein a press plate (23) is arranged above the container (2) in the hood upper part (4) such that this press plate (23) and thus the container (2) can be moved in the axial direction (P1), wherein at least one vacuum-tight seal (5) is arranged at least in the end face (24) of a hood part (4), wherein, in the course of a first stroke (H1), the hood upper part (3) can be moved in such a way that it rests on the heating press lower part (6) and the interior space of the hood (12) can be closed in a vacuum-tight manner by the seal(s) (5, 9) although the vulcanizing mold is still open in an air-permeable manner and wherein a pump (10) and a vacuum tank (11), by means of which a vacuum can be generated in the interior space of the hood (12) after the first stroke (H1), are provided, wherein, in the course of a second stroke (H2), the press plate can be moved in such a way that the vulcanizing mold can be completely closed under vacuum conditions in the interior space of the hood (12).

An inner mold mechanism for molding an annular structure according to an aspect of the invention comprises first inner mold segments and second inner mold segments, the first and second inner mold segments alternating with each other about a mold axis; a first axially movable actuator, the first actuator being mechanically connected to the first inner mold segments so as to move the first inner mold segments radially when the first actuator is moved axially; a second axially movable actuator, the second actuator being mechanically connected to the second inner mold segments so as to move the second inner mold segments radially when the first actuator is moved axially.

A tire vulcanizing apparatus includes a vulcanization mold including a lower mold and an upper mold to define a tire mold cavity for vulcanizing a green tire together with a rigid core on which the green tire is formed, a base portion, a lower plate to which the lower mold is attached, the lower plate supported by the base portion, a first ring having a circular shape with a center corresponding to an axial center of the vulcanization mold and arranged between the base portion and the lower plate, an upper plate to which the upper mold is attached so as to face the lower mold up and down, and a lifting device for moving the upper plate up and down between a lower location to close the vulcanization mold and an upper location in which the upper mold positions opening the vulcanization mold.

A mechanism releases a plate from a recess in a tire mold part. The mechanism includes a bolt insertable into a hole in the tire mold part and extending from a first end at an outer surface of the tire mold part to a second end at a recess for a pocket plate in the tire mold part. The first end of the bolt has an axially extending projection allowing manipulation of the bolt about an axis within the hole. The projection is defined by two diametrically opposite curved surfaces interconnected by two diametrically opposite planar surfaces.

A tire mold is provided with a groove-like saw cut in an area of a tire molding surface which comes into contact with a side surface of a tire. The saw cut comprises a pair of circumferential saw cuts arranged to be spaced in a tire diametrical direction, a grid-like saw cut which is expanded between the pair of circumferential saw cuts, and a plurality of frame-like saw cuts which are dotted between the pair of circumferential saw cuts. The frame-like saw cuts fringe a closed area which is wider than a smooth area defined by the grid-like saw cut. The grid-like saw cut surrounds the frame-like saw cuts to prevent the frame-like saw cuts from coming into contact with each other. The frame-like saw cuts are coupled to each other via the grid-like saw cut.

The present invention relates to the fields of tire vulcanizing machines and rubber vulcanizing apparatuses, in particular to tire vulcanizing equipment, comprising a mold assembly, a ring seat assembly provided in the mold assembly, a cylinder assembly supporting the ring seat assembly, a sealing hood for sealing a gas in the mold assembly, and a driving member. A gas circulating fan is provided on the ring seat assembly; a rotating shaft for driving the gas circulating fan to rotate is provided in the cylinder assembly; the driving member drives the rotating shaft to rotate; and the sealing hood isolates the driving member, such that high-temperature and high-pressure gas in the mold assembly cannot damage the driving member, thereby increasing the service life of the driving member.

The curing press for a tire blank includes a frame and a plurality of circumferentially distributed segments which are capable of forming a tread for the tire. Each of the segments has at least one opening. For each segment, at least one tie rod is mounted slidably and rotatably in the opening of the segment on the one hand and hinged to the frame on the other hand. The mounting and hinging form the only connections of the tie rod to elements of the press other than the tie rod.

A green tyre has a symmetric profile in radial section having a radially outer tread band, two radially inner beads and two sidewalls each extended from one edge of the tread band to one of the beads. During a moulding and vulcanisation treatment of the green tyre, a movement is imposed to the tread band with respect to the beads along a direction parallel to a rotation axis of the tyre, to obtain a moulded and vulcanised tyre having an asymmetric profile in radial section. A mould for vulcanizing tyres for vehicle wheels is also described, having a tread wall axially asymmetric with respect to a middle line plane of the mould.

A pressurization apparatus for preventing faulty formation of patterns of a tire includes a push part for pressing the upper surface of a green tire and fixing the green tire and configured to be separated at the center and located under an upper plate with closely contact with the upper plate; an upper plate formed on the upside of the push part; a press part being located under the upper plate and coupled with the external sides thereof; a pattern part formed to contact the inner surface of the press part and operated to slide and move up or down; and a support part placed under the green tire to contact with the lower surface of the green tire and to support the green tire.