WO2021223463A1 - 一种钢帘线、其制造方法及轮胎 - Google Patents

一种钢帘线、其制造方法及轮胎 Download PDF

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Publication number
WO2021223463A1
WO2021223463A1 PCT/CN2021/071663 CN2021071663W WO2021223463A1 WO 2021223463 A1 WO2021223463 A1 WO 2021223463A1 CN 2021071663 W CN2021071663 W CN 2021071663W WO 2021223463 A1 WO2021223463 A1 WO 2021223463A1
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Prior art keywords
steel cord
strength element
convex curve
strength
periodic
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PCT/CN2021/071663
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English (en)
French (fr)
Inventor
刘祥
姚海东
苗为钢
刘湘慧
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江苏兴达钢帘线股份有限公司
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Publication of WO2021223463A1 publication Critical patent/WO2021223463A1/zh

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/2007—Wires or filaments characterised by their longitudinal shape
    • D07B2201/2008—Wires or filaments characterised by their longitudinal shape wavy or undulated
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire cords

Definitions

  • the invention belongs to the technical field of rubber products, and particularly relates to a steel cord, a manufacturing method thereof and a tire.
  • the tire has a requirement for the orientation of the steel cord of the belt layer during the driving process.
  • the rigidity of the steel cord will be reduced and the flexibility will be increased, so that it can easily overcome obstacles such as pebbles.
  • the rigidity of the steel cord in the axial direction of the tire is increased and the flexibility is reduced, so that the stability during bending is better and the steering performance is good.
  • steel cords are always isotropic during the manufacturing process, and oriented steel cords require special processing and manufacturing.
  • EP0264145A1 discloses steel cords with elongated cross-sections including flat steel wires as the core.
  • CN102482844B discloses a steel rope with an elliptical cross section including an elliptical steel wire as a core.
  • the elongated cross-section or the elliptical cross-section makes the obtained steel cord have orientation, but the flat steel wire or the elliptical steel wire will reduce the mechanical properties of the steel wire during manufacturing, such as the fatigue resistance and the tensile strength.
  • the flat steel wire or The method of elliptical steel wire is cold-drawn or cold-rolled using a forming die, the manufacturing process is complicated and difficult, and the production cost is increased.
  • JP-A-09-268485 discloses another method for manufacturing oriented steel cords, which is to arrange round steel wires according to the geometric characteristics of the ellipse, but the process of manufacturing the steel cords is not easy to implement, and the cost is also high.
  • the present invention provides a steel cord, a manufacturing method thereof and a tire.
  • a steel cord comprising at least one strength element, the strength element having a periodic discontinuous convex curve, and the convex curve is always placed on one or both sides of the steel cord Or multi-sided.
  • steel cord does not mean that all the constituent elements are steel elements, but only that most of the elements are steel elements.
  • Other elements such as nylon or aromatic polyester amine elements or other materials can also be present in the steel cord as strength elements or filling elements.
  • element can be a single steel wire or a strand with multiple single steel wires.
  • the ratio of the cyclic distance C of the discontinuous convex curve of the strength element to the twist pitch P of the strength element at the twisting position of the steel cord is C/P ⁇ 1.
  • the ratio L/C of the length L of the convex curve to the periodic distance C of the discontinuous convex curve of the strength element is less than or equal to 0.5.
  • the periodic distance C of the discontinuous convex curve of the strength element refers to the axial distance from the initial position of the convex curve of a single strength element to the initial position of the next adjacent convex curve.
  • the length L of the convex curve refers to the axial distance from the initial position to the end position of the convex curve.
  • the twist position refers to the position where the strength element is arranged in the steel cord.
  • the ratio of the wave height H of the convex curve to the diameter d of the intensity element is 1.02 to 2.50, and the convex curve has several wavelengths. Further, in some embodiments, the convex curve has 2 to 4 wavelengths.
  • the wave height H of the convex curve refers to the distance from the peak to the valley of the convex curve perpendicular to the axial direction of the element.
  • the wavelength refers to the axial distance between adjacent peaks (or troughs).
  • the ratio of the wave height H of the convex curve to the diameter d of the strength element is less than 1.02, the difference in orientation of the steel cord cannot be clearly shown; the ratio of the wave height H of the convex curve to the diameter d of the strength element is greater than 2.50, then Makes the strength loss of the strength element significantly increased.
  • all the strength elements that make up the steel cord at the same twist position have periodic discontinuous convex curves, and the convex curves are always placed on one or both sides or more of the steel cord. side.
  • the periodic discontinuous convex curve of the strength element is in a plane.
  • the periodic discontinuous convex curve of the strength element is in a continuous curved surface.
  • the diameter of the strength element is generally 0.10mm to 0.80mm, and other diameters can also be designed as required.
  • the strength element When the strength element is used as a steel element, in order to obtain higher strength, its carbon content is generally 0.60% to 1.02%.
  • the strength element can be a bare steel wire without any coating or a coated steel wire.
  • the strength element is coated with brass or other metal alloy coating that promotes adhesion to the rubber.
  • the present invention also discloses a method for manufacturing the above-mentioned steel cord, including:
  • At least one of the elements is subjected to a periodic discontinuous bending operation, so that the at least one element has a periodic discontinuous convex curve;
  • the periodic discontinuous bending operation accepted by at least one strength element in the element is completed in a plane.
  • the periodic discontinuous bending operation accepted by at least one strength element in the element is completed in a spiral manner.
  • the present invention also discloses a tire, which includes the above-mentioned steel cord.
  • the steel cord, its manufacturing method and tire provided by the present invention the steel cord has orientation, and the steel cord has more The gap and opening of the steel cord result in a small rigidity, while the steel cord has a large rigidity on the other side.
  • the steel cords are arranged in the tire belt.
  • the side with less rigidity is placed in the radial direction of the tire, and the side with greater rigidity is placed in the axial direction of the tire, so as to achieve good driving comfort and steering performance.
  • the convex curve can increase the gap between the strength components of the steel cord, thereby improving the rubber permeability of the steel cord, reducing the wear of the strength components, and improving the corrosion resistance of the strength components.
  • FIG. 1 is a schematic diagram of the structure of a steel cord in the prior art: the existing steel cord 10, the first element 11, and the second element 12.
  • Fig. 2 is a schematic diagram of a strength element of an embodiment of the present invention.
  • FIG 3 is a schematic diagram of the structure of a steel cord according to an embodiment of the present invention: the steel cord 20, the first strength element 21, and the second strength element 22.
  • Fig. 4 is a schematic diagram of a double twister for manufacturing steel cords according to an embodiment of the present invention.
  • Fig. 5 is a schematic diagram of a convex gear in the embodiment.
  • a method for manufacturing oriented steel cords including:
  • At least one of the elements is subjected to a periodic discontinuous bending operation, so that the at least one element has a periodic discontinuous convex curve;
  • the convex gear 42 shown in FIG. 5 can be used to perform periodic and discontinuous bending operations on the strength element.
  • the convex teeth of the convex gear 42 are arranged periodically and discontinuously, so that the configuration shown in FIG. 2 can be obtained. ⁇ strength element 30.
  • the wheel diameter, the number of teeth and the number of teeth of the convex gear 42, the required wave height H, convex curve length L and the period distance C of the convex curve of the strength element 30 can be obtained, and the convex curve of the strength element 30 can be obtained.
  • Several wavelengths of can be set according to the tooth profile of the convex gear 42.
  • the convex gear 42 may be actively rotated to perform a bending operation on the strength element, or may be passively rotated to perform a bending operation on the strength element.
  • the convex gear 42 can perform a bending operation on the strength element in a plane, or it can rotate around the strength element axial direction, so as to perform a spiral bending operation on the strength element.
  • Convex gears are only one way to perform bending operations on the strength elements, and other methods such as deforming rollers, bearings, and periodic deformation of the strength elements can also be used.
  • the original strength element 40 is paid out from the pay-off spool 41 and passes through the convex gear 42 to obtain the strength element 30 with a periodic discontinuous convex curve.
  • the strength element 30 is twisted into the steel cord 20 by the double-twisting machine 43, the strength element 30 forms the steel cord 20 in a nearly helical manner, and at the same time, the strength element 30 itself is centered in the axial direction of the steel cord 20.
  • twisting the strength element 30 twists once for each twist pitch.
  • Example 1 uses the original strength element with a diameter of 0.30mm to undergo periodic discontinuous bending operations through convex gears. Since the bending operation will reduce the breaking load of the strength element to a certain extent, in the process of manufacturing the 0.30mm strength element, Properly increase the initial strength of the strength element before the bending operation to maintain the fracture load of the final steel cord at a good level. This can be obtained by increasing the drawing strain or increasing the tensile strength of the drawn strong steel wire. For this industry It is a common way for the technicians in the.
  • the period distance of the convex curve of the strength element of 0.30mm is 7.00mm
  • the length of the convex curve is 3.50mm
  • the wave height is 0.37mm
  • the wavelength is 1.40mm.
  • Example 2 uses a strength element with a diameter of 0.25mm to undergo periodic discontinuous bending operations through a convex gear. Since the bending operation will reduce the breaking load of the strength element to a certain extent, in the process of making a 0.25mm strength element, appropriate Improve the initial strength of the strength element before the bending operation to maintain the breaking load of the final steel cord at a good level. This can be obtained by increasing the drawing strain or increasing the tensile strength of the drawn strong steel wire. It's a common way for the technicians.
  • the period distance of the convex curve of the strength element of 0.25mm is 6.00mm
  • the length of the convex curve is 1.50mm
  • the wave height is 0.30mm
  • the wavelength is 0.43mm.

Abstract

一种钢帘线（20）、其制造方法及轮胎，钢帘线（20）包含至少一个强度元件（30），强度元件（30）具有周期性的不连续的凸形曲线，凸形曲线总是置于钢帘线（20）的一侧或两侧或多侧。

Description

一种钢帘线、其制造方法及轮胎 技术领域
本发明属于橡胶制品技术领域，特别涉及一种钢帘线、其制造方法及轮胎。
背景技术
轮胎在行驶过程中对带束层的钢帘线有取向性的要求，在轮胎径向方向希望钢帘线的刚度减小并且挠性增大，从而很容易能够越过障碍物例如鹅卵石，具有良好的驾驶舒适性；在轮胎轴向方向希望钢帘线的刚度增大并且挠性减小，从而使得在弯曲时稳定性更好，具有良好的转向性能。通常钢帘线在制造过程中总是呈各向同性，具有取向性的钢帘线需要特别的方式加工制造。
EP0264145A1披露了包括扁钢丝作为芯部的具有拉长横截面的钢帘线。CN102482844B披露了包括椭圆钢丝作为芯部的具有椭圆横截面的钢绳。拉长横截面或椭圆横截面使得获得的钢帘线具有取向性，但是扁钢丝或椭圆钢丝在制造期间都会降低钢丝的机械性能，例如抗疲劳性能降低并且抗拉强度降低，另外制造扁钢丝或椭圆钢丝的方式是采用成型模具冷拉拔或者采用冷轧的方式，制造过程复杂并且困难，生产成本提高。
JP-A-09-268485披露了另一种取向钢帘线的制造方法是，根据椭圆形的几何特征布置圆钢丝，但是制造该钢帘线的工艺不是很容易实施，并且成本也较高。
发明内容
目的：为了克服现有技术中存在的不足，本发明提供一种钢帘线、其制造方法及轮胎。
技术方案：为解决上述技术问题，本发明采用的技术方案为：
一种钢帘线，所述钢帘线包含至少一个强度元件，所述强度元件具有周期性的不连续的凸形曲线，所述凸形曲线总是置于钢帘线的一侧或两侧或多侧。
本申请中，“钢帘线”一词并不意味着所有组成元件都是钢元件，而只是意味着其中大部分元件为钢元件。其它元件如尼龙或芳族聚酯胺元件或其它材料也可作为强度元件或填充元件在钢帘线中存在。
“元件”一词可以是单一钢丝，也可以是具有多根单一钢丝的股线。
作为优选方案，所述强度元件的不连续的凸形曲线的周期距离C与所述强度元件在钢帘线的捻合位置的捻制捻距P的比值C/P≤1。
作为优选方案，所述凸形曲线的长度L与所述强度元件的不连续的凸形曲线的周期距离C的比值L/C≤0.5。
强度元件的不连续的凸形曲线的周期距离C指的是单个强度元件的凸形曲线初始位置至下一相邻凸形曲线初始位置的轴向距离。
凸形曲线的长度L指的是凸形曲线初始位置至结束位置的轴向距离。
捻合位置指的是强度元件布置在钢帘线中的位置。
作为优选方案，所述凸形曲线的波高H与强度元件直径d的比值为1.02～2.50，所述凸形曲线有若干个波长。进一步的，在一些实施例中，所述凸形曲线有2～4个波长。
凸形曲线的波高H指的是垂直于元件轴向方向的凸形曲线的波峰到波谷的距离。
波长指的是相邻波峰(或波谷)之间的轴向距离。
所述凸形曲线的波高H与强度元件直径d的比值小于1.02，则不能明显呈现出钢帘线的取向差异；所述凸形曲线的波高H与强度元件直径d的比值大于2.50，则会使得强度元件的强度损失显著上升。
作为优选方案，组成钢帘线的捻合位置相同的所有强度元件都具有周期性的不连续的凸形曲线，且所述凸形曲线总是置于钢帘线的一侧或两侧或多侧。
作为优选方案，所述凸形曲线总是置于钢帘线的对称两侧。更优选的是，所述强度元件的不连续的凸形曲线的周期距离C与所述强度元件在钢帘线的捻合位置的捻制捻距P的比值为C/P＝0.5，所述凸形曲线的长度L与所述强度元件的不连续的凸形曲线的周期距离C的比值L/C≤0.5。
作为优选方案，所述强度元件的周期性的不连续的凸形曲线在一个平面内。
作为优选方案，所述强度元件的周期性的不连续的凸形曲线在连续曲面内。
强度元件的直径一般为0.10mm～0.80mm，根据需要也可以设计为其它直径。
强度元件作为钢元件时，为了获得较高的强度，其碳含量一般为0.60％～1.02％。
强度元件可以为没有任何涂层的裸钢丝或者涂层钢丝。优选的是，为了改善钢帘线与橡胶的粘合，强度元件涂有黄铜或其它促进与橡胶粘合的金属合金涂层。
本发明还公开了上述的钢帘线的制造方法，包括：
——使所述元件中至少有一个元件接受周期性的不连续的弯曲操作，从而使所述至少一个元件具有周期性的不连续的凸形曲线；
——使所述元件中的至少一个元件与其他元件一起组成所述钢帘线，在组成过程中把接受周期性的不连续的弯曲操作的所述元件具有的周期性的不连续的凸形曲线成周期地置于钢帘线的一侧或两侧或多侧。
作为优选方案，所述元件中至少有一个强度元件接受的周期性的不连续的弯曲操作在一个平面内完成。
作为优选方案，使所述元件中至少有一个强度元件接受的周期性的不连续的弯曲操作呈螺旋方式完成。
本发明还公开了一种轮胎，包括上述的钢帘线。
有益效果：本发明提供的钢帘线、其制造方法及轮胎，所述钢帘线具有取向性，所述钢帘线在具有所述凸形曲线一侧或两侧或多侧由于具有更多的间隙和开度导致其刚度小，而所述钢帘线在其他侧的刚度大。根据刚度的取向性布置钢帘线在轮胎带束层中，把刚度小的侧置于轮胎径向，把刚度大的侧置于轮胎轴向，从而实现驾驶的良好舒适性和转向性。另外，凸形曲线可以增加组成钢帘线的强度元件之间的间隙，从而提高钢帘线的橡胶渗透性，减少强度元件的磨损，提高强度元件的抗腐蚀性能。
附图说明
图1是现有技术钢帘线的结构示意图：现有钢帘线10、第一元件11、第二元件12。
图2是本发明实施例强度元件的示意图。
图3是本发明实施例钢帘线的结构示意图：钢帘线20、第一强度元件21、第二强度元件22。
图4是制造本发明实施例钢帘线的双捻机的示意图。
图5是实施例中凸形齿轮的示意图。
图4、图5中：钢帘线20、强度元件30、原始强度元件40、放线工字轮41、凸形齿轮42、双捻机43、过捻器44、收线工字轮45。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。对于相关领域普通技术人员已知的技术、方法和设备可能不作 详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以还包括不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
一种取向钢帘线的制造方法，包括：
——使所述元件中至少有一个元件接受周期性的不连续的弯曲操作，从而使所述至少一个元件具有周期性的不连续的凸形曲线；
——使所述元件中的至少一个元件与其他元件一起组成所述钢帘线，在组成过程中把接受周期性的不连续的弯曲操作的所述元件具有的周期性的不连续的凸形曲线成周期地置于钢帘线的一侧或两侧或多侧。
可以采用图5所示的凸形齿轮42来对强度元件进行周期性的不连续的弯曲操作，凸形齿轮42的凸形齿呈周期性的不连续排布，从而可以获得如图2所示的强度元件30。通过设计调整凸形齿轮42的轮径、齿数大小及齿数多少，可以获得需要的强度元件30的波高H、凸形曲线长度L和凸形曲线的周期距离C，同时强度元件30的凸形曲线的若干个波长可以根据凸形齿轮42的齿形设置。
凸形齿轮42可以是主动转动对强度元件进行弯曲操作，也可以是被动的转动对强度元件进行弯曲操作。
凸形齿轮42可以对强度元件在一个平面内进行弯曲操作，也可以以强 度元件轴向为中心转动，从而对强度元件进行螺旋方式的弯曲操作。
凸形齿轮仅是对强度元件进行弯曲操作的一种方式，也可以采用变形辊、轴承周期性的给予强度元件变形等其它方式。
如图4所示，原始强度元件40从放线工字轮41放线，经过凸形齿轮42，获得具有周期性的不连续凸形曲线的强度元件30。当强度元件30经过双捻机43捻制成钢帘线20时，强度元件30呈近螺旋线的方式组成钢帘线20，同时强度元件30自身也发生以钢帘线20轴向为中心的扭转，每形成一个捻距则强度元件30扭转一周。调整凸形齿轮42的变形位置，把每个强度元件30以凸形曲线相互顺次排列，使得捻制后强度元件30的凸形曲线螺旋缠绕的位置总是成周期地置于钢帘线20的一侧或两侧或多侧，最后通过收线工字轮45收线，从而获得本发明实施例的具有取向的钢帘线，如图3所示。
实施例1
实施例1采用直径0.30mm的原始强度元件经过凸形齿轮进行周期性的不连续的弯曲操作，由于弯曲操作会在一定程度上降低强度元件的断裂负载，因此在制作0.30mm强度元件过程中，适当提高弯曲操作前强度元件的初始强度，以保持最终制作的钢帘线的断裂负载在良好水平，这可以通过增加拉拔应变或提高拉拔强钢丝的抗拉强度等方式获得，对于本行业中的技术人员来说是常见的方式。0.30mm的强度元件凸形曲线的周期距离7.00mm，凸形曲线长度3.50mm，波高0.37mm，波长1.40mm。把两根0.30mm的强度元件的凸形曲线位置顺次排列，捻制得到2×0.30结构的钢帘线，捻 制捻距14.00mm，如图3所示。
对于制造相同结构的现有技术钢帘线2×0.30，如图1所示，本实施例和现有技术的对比例进行比较试验，试验结果见表1。
表1
Figure PCTCN2021071663-appb-000001
从表1可以看出，对于比较例1，长轴和短轴之间没有任何差异，沿着短轴的刚度和沿着长轴的刚度也没有任何差异。但是对于本实施例1，沿着短轴的刚度和沿着长轴的刚度之间存在很大的差异，与比较例1相比有更好的性能。硫化条件下的空气保持率是橡胶渗透性的测试方式，空气保持率越高(最高为1)则说明橡胶渗透性越好，比较例1和实施例1的钢帘线均具有较好的橡胶渗透性。
实施例2
实施例2采用直径0.25mm的强度元件经过凸形齿轮进行周期性的不连续的弯曲操作，由于弯曲操作会在一定程度上降低强度元件的断裂负载，因此在制作0.25mm强度元件过程中，适当提高弯曲操作前强度元件的初始 强度，以保持最终制作的钢帘线的断裂负载在良好水平，这可以通过增加拉拔应变或提高拉拔强钢丝的抗拉强度等方式获得，对于本行业中的技术人员来说是常见的方式。0.25mm的强度元件凸形曲线的周期距离6.00mm，凸形曲线长度1.50mm，波高0.30mm，波长0.43mm。把4根0.25mm的强度元件的凸形曲线位置顺次排列，捻制得到4×0.25结构的钢帘线，捻制捻距12.00mm，如图3所示。
对于制造相同结构的现有技术钢帘线4×0.25，如图1所示，本实施例和现有技术的对比例进行比较试验，试验结果见表2。
表2
Figure PCTCN2021071663-appb-000002
从表2可以看出，对于比较例2，长轴和短轴之间没有任何差异，沿着短轴的刚度和沿着长轴的刚度也没有任何差异。但是对于本实施例2，沿着短轴的刚度和沿着长轴的刚度之间存在很大的差异，与比较例2相比有更好的性能。对比比较例2的硫化条件下的空气保持率，实施例2的空气保持率较好，说明实施例2具有更好的橡胶渗透性。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为便于描述本发明和简化描述，而不是指示或暗指所指的装置或元件必须具有特定的方位、为特定的方位构造和操作，因而不能理解为对本发明保护内容的限制。
以上所述仅是本发明的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (13)

  1. 一种钢帘线，其特征在于：所述钢帘线包含至少一个强度元件，所述强度元件具有周期性的不连续的凸形曲线，所述凸形曲线总是置于钢帘线的一侧或两侧或多侧。
  2. 根据权利要求1所述的钢帘线，其特征在于：所述强度元件的不连续的凸形曲线的周期距离C与所述强度元件在钢帘线的捻合位置的捻制捻距P的比值C/P≤1。
  3. 根据权利要求1～2中任意一项所述的钢帘线，所述凸形曲线的长度L与所述强度元件的不连续的凸形曲线的周期距离C的比值L/C≤0.5。
  4. 根据权利要求1～3中任意一项所述的钢帘线，其特征在于：所述凸形曲线的波高H与强度元件直径d的比值为1.02～2.50，所述凸形曲线有若干个波长。
  5. 根据权利要求1～4中任意一项所述的钢帘线，其特征在于：组成钢帘线的捻合位置相同的所有强度元件都具有周期性的不连续的凸形曲线，且所述凸形曲线总是置于钢帘线的一侧或两侧或多侧。
  6. 根据权利要求1～5中任意一项所述的钢帘线，其特征在于：所述凸形曲线总是置于钢帘线的对称两侧。
  7. 根据权利要求6所述的钢帘线，其特征在于：所述强度元件的不连续的凸形曲线的周期距离C与所述强度元件在钢帘线的捻合位置的捻制捻距P的比值为C/P＝0.5，所述凸形曲线的长度L与所述强度元件的不连续的凸形曲线的周期距离C的比值L/C≤0.5。
  8. 根据权利要求1～7中任意一项所述的钢帘线，其特征在于：所述强度 元件的周期性的不连续的凸形曲线在一个平面内。
  9. 根据权利要求1～7中任意一项所述的钢帘线，其特征在于：所述强度元件的周期性的不连续的凸形曲线在连续曲面内。
  10. 权利要求1～9中任意一项所述的钢帘线的制造方法，包括：
    ——使所述元件中至少有一个强度元件接受周期性的不连续的弯曲操作，从而使所述至少一个强度元件具有周期性的不连续的凸形曲线；
    ——使所述元件中的至少一个强度元件与其他元件一起组成所述钢帘线，在组成过程中把接受周期性的不连续的弯曲操作的所述强度元件具有的周期性的不连续的凸形曲线成周期地置于钢帘线的一侧或两侧或多侧。
  11. 根据权利要求10所述的制造方法，其特征在于：所述元件中至少有一个强度元件接受的周期性的不连续的弯曲操作在一个平面内完成。
  12. 根据权利要求10所述的制造方法，其特征在于：使所述元件中至少有一个强度元件接受的周期性的不连续的弯曲操作呈螺旋方式完成。
  13. 一种轮胎，其特征在于：包括权利要求1至9中任意一项所述的钢帘线。
PCT/CN2021/071663 2020-05-07 2021-01-14 一种钢帘线、其制造方法及轮胎 WO2021223463A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115323816A (zh) * 2022-08-31 2022-11-11 江苏兴达钢帘线股份有限公司 一种钢丝变形装置、其使用方法及帘线生产装置

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Publication number Priority date Publication date Assignee Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462716A1 (en) * 1990-06-16 1991-12-27 Tokusen Kogyo Company Limited Steel cord for reinforcing rubber product
JPH04308287A (ja) * 1991-03-28 1992-10-30 Tokusen Kogyo Kk ゴム製品補強用スチールコード
JPH04352887A (ja) * 1991-05-30 1992-12-07 Tokusen Kogyo Kk ゴム製品補強用スチールコード　
JPH08176980A (ja) * 1994-12-26 1996-07-09 Bridgestone Corp スチールコード及び空気入りラジアルタイヤ
CN101848804A (zh) * 2007-11-06 2010-09-29 株式会社晓星 单线钢丝帘线
CN111535063A (zh) * 2020-05-07 2020-08-14 江苏兴达钢帘线股份有限公司 一种钢帘线、其制造方法及轮胎

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462716A1 (en) * 1990-06-16 1991-12-27 Tokusen Kogyo Company Limited Steel cord for reinforcing rubber product
JPH04308287A (ja) * 1991-03-28 1992-10-30 Tokusen Kogyo Kk ゴム製品補強用スチールコード
JPH04352887A (ja) * 1991-05-30 1992-12-07 Tokusen Kogyo Kk ゴム製品補強用スチールコード　
JPH08176980A (ja) * 1994-12-26 1996-07-09 Bridgestone Corp スチールコード及び空気入りラジアルタイヤ
CN101848804A (zh) * 2007-11-06 2010-09-29 株式会社晓星 单线钢丝帘线
CN111535063A (zh) * 2020-05-07 2020-08-14 江苏兴达钢帘线股份有限公司 一种钢帘线、其制造方法及轮胎

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115323816A (zh) * 2022-08-31 2022-11-11 江苏兴达钢帘线股份有限公司 一种钢丝变形装置、其使用方法及帘线生产装置

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