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    PROCESS AND APPARATUS FOR BUILDING TYRES FOR VEHICLE WHEELS
    5.
    发明申请
    PROCESS AND APPARATUS FOR BUILDING TYRES FOR VEHICLE WHEELS 有权

    公开(公告)号：US20210268760A1

    公开(公告)日：2021-09-02

    申请号：US17322150

    申请日：2021-05-17

    申请人： Pirelli Tyre S.p.A.

    发明人： Davide CONTI

    IPC分类号： B29D30/46 ,  B26D1/04 ,  B26D3/00 ,  B29D30/08

    摘要： The present disclosure is directed to a process and an apparatus for cutting a continuous rubber-covered belt in a process for building tyres for vehicle wheels, wherein the apparatus comprises a cutting group, in turn comprising: a knife formed by a first half-part and a second half-part and movable along a cutting direction that is tilted with respect to a supply direction of a rubber-covered belt placed beneath the knife. The process comprises: lifting a lifting element placed below the continuous rubber-covered belt and at the cutting zone, until a portion of rubber-covered belt is lifted, and lowering the single first-half part of the knife, making it slide with respect to the second half-part.

    Cutting device
    6.
    发明授权
    Cutting device 有权

    公开(公告)号：US11007737B2

    公开(公告)日：2021-05-18

    申请号：US16083360

    申请日：2017-01-13

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： Yuichi Takai

    IPC分类号： B29D30/46 ,  B29D30/08

    摘要： To accurately cut a ply for a tire. It is a cutting device 1 for cutting a ply 10 for a tire in which a plurality of cords 12 parallelly arranged at fixed pitches are coated with an unvulcanized topping rubber 10. It has a pitch increasing means 2 for increasing the pitches of the cords 12 by pressing the ply 10 from a second surface 10b side to a first surface 10b side of the ply 10 so as to stretch the ply 10 toward the first surface 10a side; and a ply cutting means 3 disposed on the first surface 10a side of the ply 10, for cutting the stretched portion of the ply 10 along the cords 12.

    Tire
    7.
    发明授权
    Tire 有权

    公开(公告)号：US10967590B2

    公开(公告)日：2021-04-06

    申请号：US15582920

    申请日：2017-05-01

    申请人： BRIDGESTONE CORPORATION

    发明人： Yoshihide Kouno ,  Seiji Kon ,  Keiichi Hasegawa

    IPC分类号： B29D30/08 ,  B60C15/06 ,  B29D30/06 ,  B60C5/00 ,  B60C15/04 ,  B60C5/01 ,  B29D30/48 ,  B60C15/05 ,  B60C1/00 ,  B29K101/12

    摘要： A tire includes: a tire frame member formed in a ring shape from a frame resin material, and including a pair of bead sections, a pair of side sections, and a crown section; a ring shaped bead core that is embedded in and joined to each of the bead sections, and that is formed by a single strand, or plurality of strands, of bead cord extending in the tire circumferential direction, and covered with, and joined to, a covering resin material; and an extension portion that extends from each of the bead cores in a direction that intersects with the tire circumferential direction when viewed from a tire side face, and that is joined to the tire frame member.

    Process and apparatus for manufacturing tyres for vehicle wheels
    9.
    发明授权
    Process and apparatus for manufacturing tyres for vehicle wheels 有权

    公开(公告)号：US10807334B2

    公开(公告)日：2020-10-20

    申请号：US15615889

    申请日：2017-06-07

    申请人： Pirelli Tyre S.p.A.

    发明人： Maurizio Marchini ,  Christian De Col

    IPC分类号： B29D30/30 ,  B29D30/08 ,  B29D30/00 ,  B29D30/16 ,  B29D30/70

    摘要： A process for manufacturing tyres for vehicle wheels includes associating at least one reinforcing structure with at least one surface portion of at least one tyre component laid on a forming support, wherein associating the at least one reinforcing structure includes bringing, through a handling and deposition member, at least one reinforcing element to the forming support and depositing, through said handling and deposition member, the reinforcing element on a respective deposition part defined on a surface portion of the component. The depositing includes gradually laying the reinforcing element on the deposition part following the profile of the deposition part in a circumferential direction.

    Tire building drum
    10.
    发明授权
    Tire building drum 有权

    公开(公告)号：US10654234B2

    公开(公告)日：2020-05-19

    申请号：US15317671

    申请日：2015-05-11

    申请人： BRIDGESTONE CORPORATION

    发明人： Tatsuya Itoh

    IPC分类号： B29D30/26 ,  B29D30/24 ,  B29D30/08 ,  B29D30/06

    摘要： A tire building drum (10) is used to build a large green tire. The tire building drum (10) comprises: a cylindrical drum main body (12) having an outer peripheral surface (14) a diameter of which is capable of being increased and reduced; and a coating (16) formed on the outer peripheral surface of the drum main body. The coating (16) includes a silicon layer (26) defining a surface of the coating (16), and the silicon layer has a surface roughness Ra of 10 μm or greater. The tire building drum (10) requires no application of stearic acid onto the surface thereof in release of the green tire.