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公开(公告)号：US11097447B2
公开(公告)日：2021-08-24
申请号：US16073407
申请日：2017-01-12
摘要： A method for producing a rubber member according to the present invention includes the steps of: supplying a rubber composition to a cylinder provided in an extruder; extruding the rubber composition to a downstream side of the cylinder while kneading the rubber composition in an internal space of the cylinder that includes a plurality of protruding members protruding from an inner wall surface of the cylinder; compressing the rubber composition at least once in the step of extruding the rubber composition to the downstream side; discharging a gas generated from the compressed rubber composition to outside of the cylinder; discharging, through a discharge outlet of the cylinder, the rubber composition after the gas has been generated; and molding the rubber composition that has been discharged through the discharge outlet into a predetermined rubber member shape.
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公开(公告)号：US09956829B2
公开(公告)日：2018-05-01
申请号：US14613036
申请日：2015-02-03
发明人： Masayuki Sakamoto , Kenji Ueda
CPC分类号： B60C15/04 , B60C2015/046 , B60C2015/048
摘要： A pneumatic tire 1 is provided in a bead portion 4 with a bead core 5 formed of a bead wire 20. The bead core 5 has a wound single bead wire structure formed from turns of the single bead wire 20, and has at least three wire layers 10. Each side face of the bead core 5 has a shape such that it is possible to draw a common tangent 30 to at least two turns of the bead wire 20 appearing in the side face 51 which common tangent is substantially parallel with the tire radial direction. The turns of the bead wire 21 in the 1st wire layer 11 are alternated with the turns of the bead wire 22 in the 2nd wire layer 12 disposed on the outside of the 1st wire layer 11. The 1st wire layer 11 includes a turn 21 having the winding-start end 16 of the bead wire, which turn 21 is positioned between adjacent two turns 22 of the bead wire in the 2nd wire layer 12.
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公开(公告)号：US11104053B2
公开(公告)日：2021-08-31
申请号：US15296712
申请日：2016-10-18
发明人： Masayuki Sakamoto , Tomoo Tanaka , Takuma Konishi
IPC分类号： B29C48/66 , B29C48/60 , B29C48/76 , B29C48/685 , B29C48/54 , B29C48/68 , B29C48/25 , B29B7/74 , B29B7/84 , B29C48/67 , B29K21/00
摘要： The extruder includes: a cylinder having a first end portion and a second end portion respectively formed at two ends of the cylinder in an axial direction, and an ejection port formed in the first end portion; a screw including a shaft that is configured to rotate within the cylinder, and a screw blade that is provided on an outer circumferential surface of the shaft; a supplier that is attached to the second end portion side of the cylinder and is configured to supply a kneading target to an inside of the cylinder; and a plurality of protruding members that protrude from an inner wall surface of the cylinder.
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公开(公告)号：US10538046B2
公开(公告)日：2020-01-21
申请号：US15523575
申请日：2015-11-04
发明人： Masayuki Sakamoto , Kenji Ueda , Takamichi Sagawa
摘要： A pneumatic tire manufacturing method is provided in which winding collapse is prevented, there is no possibility of adverse effects on the FV, a current-carrying layer can be formed easily, and down-stitching can be dispensed with or minimized in the manufacture of SOT-structure pneumatic tires having a base-pen structure in the tread. This pneumatic tire manufacturing method involves: a step in which a sidewall, an inner liner, and a ply are bonded on a first molding drum, beads are set, and the tread side part that will form the current-carrying layer is formed on the side wall, forming a first cover; a step in which a breaker and band are bonded on a second molding drum and the tread center part is formed on the band, shaping the tread ring; a step in which the first cover is inserted inside of the tread ring and inflated to bond to the tread ring with pressure; and a step in which the sidewall is bonded to the lateral surface of the first cover, and the tread side part and the tread center part are bonded together.
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公开(公告)号：US20150210026A1
公开(公告)日：2015-07-30
申请号：US14426057
申请日：2013-08-20
发明人： Masayuki Sakamoto
CPC分类号： B29D30/0629 , B29C33/02 , B29C33/424 , B29D30/0661 , B29D30/12 , B29D2030/0616 , B29L2030/00
摘要： According to the present invention, the cycle time is reduced for a core removal step while suppressing displacement of the affixing position for the rubber member during a green-tire forming step. This rigid core has a ring-shaped core body having a tire forming surface for molding the inner surface of a pneumatic tire. The core body is formed from a plurality of core segments that are split in the circumferential direction and movable in the tire radius direction. The surface roughness (Ra) of the outer surface of the core segments forming the tire forming surface is 2.0-20.0 μm.
摘要翻译： 根据本发明，在生坯轮胎成型工序中，在抑制橡胶部件的固定位置的位移的同时，对于芯部移除工序，循环时间缩短。 这种刚性芯具有环形芯体，其具有用于模制充气轮胎的内表面的轮胎形成表面。 芯体由沿圆周方向分割并可沿轮胎半径方向移动的多个芯部段形成。 构成轮胎成型面的芯部分的外表面的表面粗糙度（Ra）为2.0〜2.0μm。
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公开(公告)号：US10328651B2
公开(公告)日：2019-06-25
申请号：US14427604
申请日：2013-09-12
发明人： Masayuki Sakamoto
摘要： A technique for easily taking out a main body of a core mold is proposed. An annular core-mold main portion 11 having a molding surface 18 for shaping an inner surface of a pneumatic tire is included, and the core-mold main portion 11 is composed of a plurality of segments each of which is taken out toward the inside in a radial direction. In the molding surface 18 of the core-mold main portion 11, a ratio Bd/W of a maximum width W lying in regions for shaping sidewall portions and a width Bd in the tire axial direction measured at toe-end shaping positions 18e for shaping toe ends of bead portions is not less than 0.80. In an inside zone 30 from the toe-end shaping position 18e of the molding surface 18 to the position of the maximum width W, the angle α of a tangent T drawn to the molding surface 18 is not more than 15 degrees. The inside zone 30 includes an oblique part 32 in which the angle α of the tangent T is 30 to 45 degrees, and a ratio h/H of a length h in a radial direction of the oblique part 32 and a length H from the toe-end shaping position 18e to an intersecting point P of a line drawn in the tire radial direction from the toe-end shaping position 18e outwardly in the radial direction with the molding surface 18 is less than 0.25.
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公开(公告)号：US10538047B2
公开(公告)日：2020-01-21
申请号：US15523600
申请日：2015-11-04
摘要： A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves a first cover molding step for molding a first cover having a sidewall, an inner lining, a ply, beads and a tread-side edge, a tread ring forming step for forming a tread ring having a breaker, a band and a tread center part, a shaping step for pressure-bonding the tread ring and the first cover to mold this to the shape of the raw cover, and a turn-up step for bonding the side wall to the lateral surface of the first cover, wherein the tread-side edge is formed in a position adjacent to the end of the tread center portion in the shaping step, and in the turn-up step, the tread-side edge and the tread center part are bonded together.
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公开(公告)号：US10239269B2
公开(公告)日：2019-03-26
申请号：US14426057
申请日：2013-08-20
发明人： Masayuki Sakamoto
摘要： According to the present invention, the cycle time is reduced for a core removal step while suppressing displacement of the affixing position for the rubber member during a green-tire forming step. This rigid core has a ring-shaped core body having a tire forming surface for molding the inner surface of a pneumatic tire. The core body is formed from a plurality of core segments that are split in the circumferential direction and movable in the tire radius direction. The surface roughness (Ra) of the outer surface of the core segments forming the tire forming surface is 2.0-20.0 μm.
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9.发明申请公开(公告)号：US20150246492A1
公开(公告)日：2015-09-03
申请号：US14427604
申请日：2013-09-12
发明人： Masayuki Sakamoto
CPC分类号： B29D30/0661 , B29C33/76 , B29D30/0601 , B29D30/12 , B29L2030/00
摘要： A technique for easily taking out a main body of a core mold is proposed. An annular core-mold main portion 11 having a molding surface 18 for shaping an inner surface of a pneumatic tire is included, and the core-mold main portion 11 is composed of a plurality of segments each of which is taken out toward the inside in a radial direction. In the molding surface 18 of the core-mold main portion 11, a ratio Bd/W of a maximum width W lying in regions for shaping sidewall portions and a width Bd in the tire axial direction measured at toe-end shaping positions 18e for shaping toe ends of bead portions is not less than 0.80. In an inside zone 30 from the toe-end shaping position 18e of the molding surface 18 to the position of the maximum width W, the angle α of a tangent T drawn to the molding surface 18 is not more than 15 degrees. The inside zone 30 includes an oblique part 32 in which the angle α of the tangent T is 30 to 45 degrees, and a ratio h/H of a length h in a radial direction of the oblique part 32 and a length H from the toe-end shaping position 18e to an intersecting point P of a line drawn in the tire radial direction from the toe-end shaping position 18e outwardly in the radial direction with the molding surface 18 is less than 0.25.
摘要翻译： 提出了一种容易取出芯模主体的技术。 包括具有用于使充气轮胎的内表面成形的成形面18的环状芯模主体部11，并且芯模主体部11由多个片段构成，每个片段向内取出 径向。 在芯模主体部11的成形面18中，在形成侧壁部的区域中的最大宽度W的比率Bd / W和轮胎轴向的宽度Bd在用于成形的端部成形位置18e 胎圈部的脚趾端部不小于0.80。 在从成型面18的端部成形位置18e到最大宽度W的位置的内侧区域30中，向模制面18拉出的切线T的角度α为15度以下。 内侧区域30包括倾斜部32，切线T的角度α为30度〜45度，倾斜部32的径向长度h的比h / H和脚趾处的长度H 前端成形位置18e到成型面18的从前端成形位置18e向径向外侧的轮胎径向的线的交点P小于0.25。
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公开(公告)号：US10532615B2
公开(公告)日：2020-01-14
申请号：US15523585
申请日：2015-11-04
摘要： A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves: a step in which a sidewall, an inner liner, and a ply are bonded on a first molding drum, a pair of beads is set, and the tread side part is formed on the side wall, forming a first cover; a step in which a breaker and band are bonded on a second molding drum and the tread center part is formed on the band, shaping the tread ring; a step in which the first cover is inserted inside of the tread ring and the first cover is inflated, bonding the tread ring and the first cover with pressure; and a step in which the sidewall is folded back towards the lateral surface of the inflated first cover and bonded to the lateral surface of the first cover, and the tread side part and the tread center part are bonded together.
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