The present invention provides a method for improving the construction process of a wide-base radial truck tire, and the improvement of the tire construction process is realized by the design of carcass ply, the tire belt drum and the tire semi-finished components. The invention solves the problem of carcass bending, and provides theoretical guidance and technical support for improving the performance of wide-angle radial tires. The design method of the belt drum of the tire molding machine effectively controls the cords elongation of the belt. In addition, the problem of uneven force in the cords of the belt is eliminated, which dispels the abnormal flow of the wide-base tire shoulder rubber to the center of the crown during the shaping process, thus improving the durability and operability of the tire. The proposed semi-finished components design method in this invention can accurately design the tire semi-finished parts material distribution map, significantly improve the finished tire and the theoretical design of tire material distribution consistency, thus reducing tire development cycle and development costs.

A dual mold spacer for use with a dual mold assembly is provided that includes a first side portion configured to engage a first side rail of the dual mold assembly. A second side portion is configured to engage a second side rail of the dual mold assembly. A body portion extends from the first side portion to the second side portion and is configured to be located between a press of the dual mold assembly and first and second molds of the dual mold assembly. The body portion is configured for being spaced from and free from engagement with the first and second molds.

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).

The present disclosure provides a method and apparatus for cleaning a workpiece, and a method and apparatus for cleaning a ventless tire segment mold. The method for cleaning a workpiece comprises: heating the workpiece to a preset temperature; and applying a cleaning solution onto the workpiece so that the cleaning solution is vaporized instantaneously to form a micro-explosion at each shocking point, thereby peeling dirt off the workpiece and achieving the purpose of workpiece cleaning. The apparatus for cleaning a workpiece comprises: a heating device for heating the workpiece into a preset temperature range, and a cleaning device for applying a cleaning solution onto the workpiece so that the cleaning solution is vaporized instantaneously to form a micro-explosion at each shocking point, thereby peeling dirt off the workpiece and achieving the purpose of workpiece cleaning. The present disclosure not only cleans the dirt on the surface of the workpiece, but also makes a significant breakthrough in the cleaning of the gaps of micron or nano scale on the workpiece. The present disclosure has the characteristics of lower cost, simple cleaning, thorough dirt removal, etc.

A method and device for manufacturing the tire are provided. For each tire obtained by feeding green tires having an identical specification into an identical vulcanizer, using an arrangement mechanism, with circumferential positions of the green tires varied with respect to the vulcanizer and vulcanizing the green tires, a storage unit stores characteristic value data of at least one of a UF or DB value and feed position data identifying the circumferential position of the green tires, a calculation unit calculates, based on the stored data, the circumferential position of the green tires with respect to the vulcanizer at which a characteristic value related to the characteristic value data is brought within a tolerance range, and feeding using the arrangement mechanism, into the vulcanizer, the green tire to be newly vulcanized while adjusting the green tire to the circumferential position with respect to the vulcanizer being calculated.

The present invention is directed to a 3D-printed tire segment model having a tread portion comprising a plurality of grooves, ribs and/or tread blocks, and a plurality of blades extending out of the ribs and/or tread blocks, wherein the tire segment model is made of a 3D-printed polymer. Moreover, the present invention is drawn to a method of making a tire mold segment, including the step of 3D-printing the above tire segment model with a polymer.

A tire vulcanizing method includes a tire removal step for removing a vulcanized tire from a mold. The tire removal step includes a stage in which upper and lower side molds are moved inward in a tire axial direction so as to deform the vulcanized tire in a direction in which a bead width of the vulcanized tire is decreased, and a stage in which, in the deformed state of the vulcanized tire, the segments are moved outward in a tire radial direction so that the segments are removed from the vulcanized tire.

A heating press (1) for vulcanizing a vehicle tire under a vacuum, comprising a heating press upper part (3) and a heating press lower part (6), wherein a container (2) having the mold parts (14, 16, 17, 18, 21) of a segmented vulcanizing mold and a cylindrical hood upper part (4) enclosing said container are arranged on the heating press upper part (3), wherein the hood upper part (4) is arranged fixedly on the heating press upper part (3), wherein the diameter of the hood upper part (4) is dimensioned such that said hood upper part can be pushed over the heating press lower part (6) with a small clearance and said hood upper part has a length (23) which is sufficient to form a closed hood interior space (12) with the heating press lower part (6) and heating press upper part (4) when the vulcanizing mold is still open, wherein, in the course of a first stroke (H.sub.1), the heating press upper part (3) can be moved in the axial direction (P1) in such a way that the hood upper part (4) forms a vacuum-tight hood interior space (12) with the heating press lower part (6), although the vulcanizing mold remains open in an air-permeable manner, wherein, in the course of a second stroke (H.sub.2), the heating press upper part (3) can be moved further in the axial direction (P1) in such a way that the vulcanizing mold can be completely closed under vacuum conditions in the interior space of the hood (12).

Method for cleaning a vulcanization mould for tyres in a curing press, using a device (1) comprising a collaborative mobile robot (10), incorporating a computer program, said robot comprising an autonomous mobile platform (2) mounted on drive wheels and comprising batteries supplying electricity, a dry ice dispenser (6), sensors for identifying the location of the mould to be cleaned and motors ensuring its displacement between a storage location of the device and the mould to be cleaned and the displacement of an articulated mobile arm (3) of said robot, said robot bearing a nozzle (4) for spraying dry ice from said dispenser, wherein the device comprises means for communication with a control unit.

According to the invention, the control unit sends a mission instruction to said device, which navigates between a storage location and the location of the mould and automatically cleans the vulcanization mould.

A vent hole cleaning method for cleaning a vent hole provided on a molding surface of a mold for vulcanizing a rubber product includes a step of detecting a shape of the molding surface; a step of calculating a position of the vent hole by comparing the shape of the molding surface obtained in the step of detecting with molding surface information stored in a controlling device in advance and including a position of the vent hole; a step of moving a cleaning means to the vent hole based on the calculated position of the vent hole; and a step of cleaning the vent hole by the cleaning means.