WO2024045308A1 - 一种钢丝帘线、其生产方法及轮胎 - Google Patents

一种钢丝帘线、其生产方法及轮胎 Download PDF

Info

Publication number
WO2024045308A1
WO2024045308A1 PCT/CN2022/128486 CN2022128486W WO2024045308A1 WO 2024045308 A1 WO2024045308 A1 WO 2024045308A1 CN 2022128486 W CN2022128486 W CN 2022128486W WO 2024045308 A1 WO2024045308 A1 WO 2024045308A1
Authority
WO
WIPO (PCT)
Prior art keywords
cord
steel
waveform
uneven surface
steel wire
Prior art date
Application number
PCT/CN2022/128486
Other languages
English (en)
French (fr)
Inventor
周志嵩
寇首鹏
姚利丽
姚海东
柯增光
Original Assignee
江苏兴达钢帘线股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏兴达钢帘线股份有限公司 filed Critical 江苏兴达钢帘线股份有限公司
Publication of WO2024045308A1 publication Critical patent/WO2024045308A1/zh

Links

Images

Classifications

    • 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
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/025—Preforming the wires or strands prior to closing
    • 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
    • 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
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/208—Enabling filler penetration
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties

Definitions

  • the present invention relates to the technical field of steel cords, and in particular to a steel cord, its production method and tires.
  • Car tires have high performance requirements during driving, especially the orientation requirements of the tire belt cords. Generally, it is hoped that the stiffness of the steel cords in the radial direction of the tire will be small and the flexibility will increase. , the softness increases, resulting in better comfort when passing some uneven roads; however, in the axial direction of the tire, it is hoped that the stiffness of the belt cord will increase, thereby reducing the hysteresis of the tire when turning. Improve steering performance and improve car handling.
  • the purpose of the present invention is to provide a steel cord, its production method and a tire to solve the problems of poor permeability of flat cords and uncontrollable production process in the prior art.
  • the present invention discloses a steel cord, which is twisted from a plurality of steel wires. At least one of the steel wires is deformed so that the cord has an uneven surface topography. The unevenness is The surface topography is located at the same position in the axial direction of the cord, and the same position is one or two symmetrical positions, so that the cord has a long diameter and a short diameter with unequal values in the cross section.
  • the cord is a cord of 1 ⁇ n structure, a cord of 1+n structure or a cord of layered structure, and the number of outermost steel wires of the cord of layered structure is n; wherein, n ⁇ 5.
  • At least one steel wire among the untwisted steel wires of the cord has a periodic composite waveform, and the composite waveform includes a first waveform and a second waveform superimposed on the first waveform.
  • the uneven curve generated by the second waveform has the same orientation.
  • the second waveform positions of all untwisted steel wires will be arranged sequentially along the axial direction of the cord.
  • the projection of the uneven surface topography on the cross section of the cord occupies a range of 0° to 180°.
  • the projection of the uneven surface topography on the cross section of the cord occupies a range of 0° to 120°.
  • the ratio of the long diameter to the short diameter ranges from 1 to 1.546.
  • the ratio of the long diameter to the short diameter ranges from 1 to 1.394.
  • the present invention discloses a production method of steel cords according to the first aspect, including:
  • At least one deformed steel wire is twisted with other steel wires to form a cord; during the twisting process, the periodic waveforms in the steel wire are arranged at the same position along the axial direction of the cord, and the same position is one or the same position.
  • the two are symmetrical so that the same position in the axial direction of the cord has an uneven surface topography.
  • the present invention discloses a tire including the steel cord described in the first aspect.
  • the uneven surface morphology of the cord designed in this application is located at the same position in the axial direction of the cord.
  • the uneven surface morphology breaks the uniform support state of the steel wire in the circumferential direction of the cord, and eliminates stress during the subsequent process of the cord. , it is difficult for the cord to maintain its original circular cross-sectional shape, so a flat cord can be produced.
  • the flat shape refers to the cord having unequal long and short diameters in the cross section; due to This application produces flat cords through uneven surface morphology, and the production process is controllable and convenient; by always placing the uneven surface morphology on one or both sides of the cord, the glue penetration rate of the cord is also improved .
  • Figure 1 is a cross-sectional morphology diagram of the 1 ⁇ 5 structural cord of the present invention.
  • Figure 2 is another cross-sectional morphology diagram of the 1 ⁇ 5 structural cord of the present invention.
  • Figure 3 is a side view of the 1 ⁇ 5 structural cord of the present invention.
  • Figure 4 is a schematic diagram of the morphology of each steel wire at one twist pitch of conventional cord after untwisting
  • Figure 5 is a schematic diagram of the appearance of each steel wire at one twist pitch of the cord of the present invention after untwisting;
  • Figure 6 (a) and Figure 6 (b) are respectively a top view and a cross-sectional top view of the uneven surface morphology of the 1 ⁇ 5 structural cord of the present invention
  • Figure 7 (a) and Figure 7 (b) are respectively a top view and a cross-sectional top view of the uneven surface morphology of the 1 ⁇ 6 structural cord of the present invention.
  • Figure 8(a) and Figure 8(b) are respectively a schematic diagram of the morphology of a steel wire after untwisting a conventional cord and a schematic diagram of its projection on a cross section;
  • Figure 9(a) and Figure 9(b) are respectively a schematic diagram of the shape of a steel wire after the cord of the present invention is untwisted and a schematic diagram of its projection on the cross section;
  • Figure 10 is a schematic diagram of the cross-section projection of each untwisted steel wire of the 1 ⁇ 5 structure cord of the present invention.
  • Figure 11 is a schematic diagram of the production device used in the cord of the present invention.
  • Figure 12 is a schematic structural diagram of a pair of deformation teeth in the deformation device in Figure 11;
  • Figure 13(a) and Figure 13(b) are respectively a schematic diagram of the deformation device of the present invention and an enlarged view of the treated steel wire;
  • Figure 14(a) and Figure 14(b) are respectively schematic diagrams of the calculation of the cord untwisted steel wire and its length.
  • a steel cord is made of twisted steel wires. At least one of the steel wires is deformed so that the cord has an uneven surface topography. The uneven surface topography is located at The same position in the axial direction of the cord is one or two symmetrical positions, so that the cord has a long diameter and a short diameter with unequal values in the cross section.
  • the uneven surface topography of the cord designed in this application is located at the same position in the axial direction of the cord.
  • the uneven surface topography breaks the uniform support state of the steel wires in the circumferential direction of the cord.
  • the flat cord refers to a cord with unequal long and short diameters in the cross section; due to the application
  • At least one steel wire among the cord untwisted steel wires has a periodic second waveform, and the periodic second waveform is superimposed on the periodic first waveform, as shown in Figure 4,
  • the second waveform and the first waveform within one twist pitch can be called a composite waveform.
  • all the untwisted steel wires of the cord have a periodic second waveform.
  • the untwisted steel wire in conventional cords has only one wave shape, and the distance between adjacent wave crests or adjacent wave troughs is the twist length T of the cord.
  • the uneven morphology of the cord surface and the projection of the uneven morphology on the cross section are determined by the second wave morphology of the composed steel wires.
  • the projection of the untwisted steel wire in the conventional cord on the cross section is circular; the projection of the untwisted steel wire on the cross section of the cord in the present invention is A circle with an uneven curve, as shown in Figure 9(a) and Figure 9(b).
  • the direction of the uneven curve is the same.
  • the morphology of each untwisted steel wire per unit cord length is shown in Figure 3.
  • the appearance of the five untwisted steel wires on the cord is formed on the surface of the cord.
  • the cross-section projection of each untwisted steel wire is shown in Figure 10.
  • the second waveform positions of all untwisted steel wires will be arranged sequentially along the axial direction of the cord, as shown in Figure 5.
  • the cords of the present invention can be cords with a 1 ⁇ n structure, cords with a 1+n structure or cords with a layered structure.
  • the number of outermost steel wires of the cords with a layered structure is n; where n ⁇ 5 .
  • the present invention also provides a side view and cross-sectional topography of a 1 ⁇ 6 structure cord.
  • the projection of the uneven steel wire surface morphology on the cord cross-section occupies a range of 0° to 180°; further, the projection of the uneven steel wire surface morphology on the cord cross-section occupies a range of It is 0° ⁇ 120°.
  • the ratio of the major diameter to the minor diameter of the cord cross-section ranges from 1 to 1.394.
  • the ratio of the major diameter to the minor diameter of the cord cross-section ranges from 1 to 1.46.
  • Figure 1 or 2 shows the topography of the cross section when the cord structure is 1 ⁇ 5.
  • the long diameter of the cord cross section is D2, and the short diameter is D2.
  • the diameter is D1.
  • Figure 3 is a side view of the cord in the present invention.
  • Figure 5 is a schematic diagram of the shape of each steel wire at one twist pitch of the flat structure cord in the present invention after untwisting. The position of the second waveform in each steel wire is marked in the figure. In actual situations, the second waveform in the untwisted morphology of the steel wire is more complex.
  • the reference to flat structure cords refers to cords having inconsistent long and short diameters in cross-section.
  • Figure 6 (a) and Figure 6 (b) are top views of the uneven surface topography on the flat structure cord, and the projection of the uneven surface topography on the cross section of the cord.
  • the projection of the uneven surface topography refers to AB
  • the projection angle ⁇ satisfies 0 ⁇ 180°, and AB is also the length of the second waveform on the untwisted steel wire.
  • Figure 7(a) and Figure 7(b) are a top view of the uneven surface topography on another form of flat structure cord, as well as the projection of the uneven surface topography on the cross section of the cord.
  • the projection of the uneven surface topography That is to say, it refers to the projection of the length of CD on the circumference of the cross section.
  • the projection angle ⁇ satisfies 0 ⁇ 120°, where CD is also the length of the second waveform on the untwisted steel wire.
  • the steel wires can be deformed in different periods before twisting.
  • the performance indicators of the cord obtained after twisting are shown in Table 1 below.
  • the steel wire can be deformed in different periods before twisting.
  • the performance indicators of the cord obtained after twisting are shown in Table 2 below.
  • the cords in the present invention show better glue penetration rate performance and bending stiffness performance in different directions of the cords. difference.
  • the risk can be avoided through corresponding means, such as adjusting the tooth shape of the deformation teeth, increasing the wave height and wavelength of the steel wire deformation, and reducing the bending of the steel wire during the periodic pre-deformation process. radius, thereby reducing the strength loss of the pre-deformed steel wire after twisting.
  • the increase in the pre-deformation wavelength will increase the length of the uneven surface topography AB of the cord after twisting, such as segment AB in Figure 6, thus increasing the angle ⁇ .
  • the cords provided herein also have reduced elongation at break.
  • This application also discloses a production method for steel cords, which method includes the following steps: subjecting the steel wire to periodic deformation treatment, so that the steel wire has a periodic composite waveform after being twisted by a twisting machine; making at least one The deformed steel wire is twisted with other steel wires to form a cord; during the twisting process, the periodic waveforms in the steel wire are arranged at the same position along the axial direction of the cord, and the same position is one or two relatively symmetrical so that the same position in the axial direction of the cord has an uneven surface topography.
  • the cord disclosed in Example 1 can be produced by this method.
  • At least one deformed steel wire is twisted with other steel wires to form a cord.
  • the other steel wires can be steel wires that have been subjected to periodic deformation treatment in this application or steel wires that have not been deformed.
  • subjecting the steel wire to periodic deformation treatment means to undergo periodic deformation treatment in the length direction may be 0.5L or L.
  • L is the length of the cord untwisted steel wire.
  • the method for realizing the periodic deformation of the steel wire in the present invention is to rely on the deformation device 1 with a periodically arranged partial tooth structure to perform the deformation process, as shown in Figures 11 to 13.
  • the range of the uneven topography of the cord surface is controlled by the tooth shape of the deformation device 1.
  • the tooth shape is larger, the longer the length of the second waveform obtained, the larger the projection angle of the deformation area on the cross section of the cord. .
  • the deformation tooth shape is large, the curvature radius of the bending deformation of the steel wire is relatively large, so that after the steel wire is twisted, the breaking force loss of the steel wire during the twisting process will not be increased.
  • T is the lay length
  • D is the diameter of the cord
  • D for the diameter of the irregular cord is the average of the maximum diameter and the minimum diameter
  • d is the diameter of the steel wire.
  • a cord with a 1 ⁇ n structure or a cord with a 1+n structure, or a cord with a layered structure, the number of steel wires in the outermost layer is n, n ⁇ 5, can be made according to the above way to produce.
  • Figure 11 is a schematic diagram of the method for producing flat structure cords in the present invention. After the cords are discharged from each pay-off unit, they pass through the steel wire pre-deformation device 1 to cause periodic pre-deformation of each steel wire, and then are twisted through the twisting point. together.
  • Figure 12 is a schematic structural diagram of a pair of deformation teeth (including upper deformation teeth 11 and lower deformation teeth 12) of the deformation device 1. The actual number of pairs of deformation teeth can be set according to the number of steel wires that need to be deformed.
  • the second waveforms on each steel wire are regularly arranged in one side of the cord, resulting in unevenness.
  • the surface morphology of the cord also allows the cord to form a flat structure in this direction during the subsequent stress relief process using a straightener.
  • this application also provides a tire having the steel cord in the embodiment.

Landscapes

  • Ropes Or Cables (AREA)
  • Tires In General (AREA)

Abstract

一种钢丝帘线、其生产方法及轮胎，钢丝帘线由多根钢丝捻制而成，钢丝中至少一根具有形变以使帘线具有不平整的表面形貌，不平整的表面形貌位于帘线轴向的相同位置，相同位置为一个或相对称的两个，以使帘线在横截面上具有数值不等的长径（D1）和短径（D2）；该帘线不平整的表面形貌位于帘线轴向的相同位置，不平整的表面形貌打破了帘线圆周方向上钢丝的均匀支撑状态，在帘线后续消除应力过程中，帘线很难保持其原有的圆形截面形态，因此可生产出扁平结构的帘线；通过不平整的表面形貌生产扁平帘线，生产过程可控、方便；通过使不平整的表面形貌总是置于帘线的一侧或两侧还提高了帘线的渗胶率。

Description

一种钢丝帘线、其生产方法及轮胎 技术领域
本发明涉及钢丝帘线技术领域，具体涉及一种钢丝帘线、其生产方法及轮胎。
背景技术
汽车轮胎在行驶过程中对轮胎的性能要求较高，尤其是对轮胎带束层的帘线有取向性的要求，一般情况下都是希望轮胎径向上，钢帘线的刚度小，挠性增加，柔软性增加，从而在通过一些不平整的路面时具有较好的舒适性；然而在轮胎轴向上，希望带束层帘线的刚度增大，从而使轮胎在转弯时的滞后性降低，提高转向性能，实现汽车操控性的提升。
常规的钢帘线在圆周方向上基本都具有相同的性能，因此，不能实现轮胎带束层这种差异性的需求。而具有不同方向性能的帘线均需要进行特殊的加工方法。US5223060A专利中提到了一种05结构的扁平钢帘线，其实现方法是生产出较为松散的帘线，或钢丝间隙较大的帘线在帘线附胶后，通过橡胶的挤压与填充，实现帘线截面在橡胶中的变化，从而使帘线在橡胶中形状为扁状，此种帘线的控制难度较大，橡胶的挤压和填充并不是一个可控的过程。
如何提供一种具有较高渗透率，且便于生产的帘线，是我们研究的问题。
发明内容
本发明的目的在于提供一种钢丝帘线、其生产方法及轮胎，以解决现有技术中扁平帘线渗透率差及生产过程不可控的问题。
为达到上述目的，本发明是采用下述技术方案实现的：
第一方面，本发明公开了一种钢丝帘线，由多根钢丝捻制而成，所述钢丝中至少一根具有形变以使所述帘线具有不平整的表面形貌，所述不平整的表面形貌 位于所述帘线轴向的相同位置，所述相同位置为一个或相对称的两个，以使所述帘线在横截面上具有数值不等的长径和短径。
进一步地，所述帘线为1×n结构的帘线、1+n结构的帘线或层状结构的帘线，所述层状结构的帘线的最外层钢丝数量为n；其中，n≥5。
进一步地，所述帘线的解捻钢丝中至少存在一根钢丝具有周期性的复合波形，所述复合波形包括第一波形及叠加在所述第一波形上的第二波形。
进一步地，单位帘线长度上的每根所述解捻钢丝在横截面上投影中，由第二波形产生的不平滑的曲线所在的方位均相同。
进一步地，单位捻距长度上，所有解捻钢丝的第二波形位置将沿帘线轴向方向依次排列。
进一步地，所述帘线解捻钢丝中所有的钢丝均具有周期性的复合波形。
进一步地，所述不平整的表面形貌在所述帘线横截面上的投影所占的范围为0°～180°。
进一步地，所述不平整的表面形貌在所述帘线横截面上的投影所占的范围为0°～120°。
进一步地，所述长径与所述短径的比值范围为1～1.546。
进一步地，所述长径与所述短径的比值范围为1～1.394。
第二方面，本发明公开了一种第一方面所述的钢丝帘线的生产方法，包括：
使钢丝接受周期性的变形处理，从而使所述钢丝在经过捻股机捻制后具有周期性的复合波形；
使至少一根变形处理后的钢丝与其它钢丝捻合成帘线；在捻合过程中，将钢丝中的周期性波形沿所述帘线轴向的相同位置设置，所述相同位置为一个或相对 称的两个，以使所述帘线轴向的相同位置具有不平整的表面形貌。
第三方面，本发明公开了一种轮胎，包括第一方面所述的钢丝帘线。
有益效果：本申请设计的帘线不平整的表面形貌位于帘线轴向的相同位置，不平整的表面形貌打破了帘线圆周方向上钢丝的均匀支撑状态，在帘线后续消除应力过程中，帘线很难保持其原有的圆形截面形态，因此可生产出扁平状的帘线，该扁平状指的是帘线在横截面上具有数值不等的长径和短径；由于本申请通过不平整的表面形貌生产扁平帘线，生产过程可控、方便；通过使不平整的表面形貌总是置于帘线的一侧或两侧还提高了帘线的渗胶率。
附图说明
图1为本发明1×5结构帘线的一种横截面形貌图；
图2为本发明1×5结构帘线的另一种横截面形貌图；
图3为本发明1×5结构帘线的的侧视图；
图4为常规帘线其解捻后一个捻距上各钢丝形貌的示意图；
图5为本发明帘线其解捻后一个捻距上各钢丝形貌的示意图；
图6(a)、图6(b)分别为本发明1×5结构帘线不平整表面形貌的俯视图及横截面形貌图；
图7(a)、图7(b)分别为本发明1×6结构帘线不平整表面形貌的俯视图及横截面形貌图；
图8(a)、图8(b)分别为常规帘线解捻后一根钢丝的形貌示意图及其在横截面上投影示意图；
图9(a)、图9(b)分别为本发明帘线解捻后一根钢丝的形貌示意图及其在横截面上投影示意图；
图10为本发明1×5结构的帘线，每根解捻钢丝在横截面上投影示意图；
图11为本发明帘线所使用的生产装置示意图；
图12为图11中变形装置中一对变形齿结构示意图；
图13(a)、图13(b)分别为本发明变形装置的示意图及处理后钢丝的放大图；
图14(a)、图14(b)分别为帘线解捻钢丝及其长度的计算示意图。
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。
实施例1
如图1至图10所示，一种钢丝帘线，由多根钢丝捻制而成，钢丝中至少一根具有形变以使帘线具有不平整的表面形貌，不平整的表面形貌位于帘线轴向的相同位置，相同位置为一个或相对称的两个，以使所述帘线在横截面上具有数值不等的长径和短径。
本申请设计的帘线不平整的表面形貌位于帘线轴向的相同位置，不平整的表面形貌打破了帘线圆周方向上钢丝的均匀支撑状态，在帘线后续消除应力过程中，帘线很难保持其原有的圆形截面形态，因此可生产出扁平结构的帘线，该扁平帘线指的是帘线在横截面上具有数值不等的长径和短径；由于本申请通过不平整的表面形貌生产扁平帘线，生产过程可控、方便；通过使不平整的表面形貌总是置于帘线的一侧或两侧还提高了帘线的渗胶率。
在一些进一步地实施例中，帘线解捻钢丝中至少存在一根钢丝具有周期性的第二波形，该周期性的第二波形叠加在周期性的第一波形上，如图4所示，第二 波形与第一波形在一个捻距内可称为一种复合波形，在进一步地实施例中，帘线所有的解捻钢丝均具有周期性的第二波形。常规帘线中的解捻钢丝中，仅有一种波形，相邻的波峰之间或相邻的波谷之间的距离就是帘线的捻距长度T。
帘线表面不平整的形貌以及不平整形貌在横截面上投影是由所组成的钢丝的第二波形形貌所决定的。如图8(a)、图8(b)所示，常规帘线中的解捻钢丝，钢丝在横截面上的投影为圆形；本发明中的帘线解捻钢丝在横截面上投影为具有不平滑曲线的圆形，如图9(a)、图9(b)所示。
本发明中的帘线，单位帘线长度上的每根解捻钢丝，在横截面上投影中，不平滑的曲线所在的方位均相同。例如1×5结构的帘线，单位帘线长度上每根解捻钢丝的形貌如图3所示，这五根解捻钢丝的形貌在帘线上的表现则是在帘线表面形成了不平整的表面形貌，每根解捻钢丝在横截面上投影如图10所示。
本发明中的帘线，如1×5结构的帘线，单位捻距长度上，所有解捻钢丝的第二波形位置将沿帘线轴向依次排列，如图5中所示。
本发明的帘线可以为1×n结构的帘线、1+n结构的帘线或层状结构的帘线，层状结构的帘线的最外层钢丝数量为n；其中，n≥5。如图7(a)、图7(b)所示，本发明还提供了一种1×6结构的帘线的侧视图及横截面形貌图。
进一步地，不平整的钢丝表面形貌在帘线横截面上的投影所占的范围为0°～180°；进一步，不平整的钢丝表面形貌在帘线横截面上的投影所占的范围为0°～120°。在一些1×5或1+5结构帘线的实施例中，帘线横截面上的长径与短径的比值范围为为1～1.394。在一些1×6或1+6结构帘线的实施例中，帘线横截面上的长径与短径的比值范围为1～1.46。
仍以1×5结构的帘线进行详细说明，如图1或图2所示为帘线结构为1×5时， 其横截面的形貌图，帘线横截面上长径为D2，短径为D1，图3为本发明中帘线的侧视图。图5为本发明中的扁平结构帘线其解捻后一个捻距上各钢丝形貌的示意图，图中标记了每根钢丝中第二波形所处的位置。实际情况中，钢丝解捻形貌中的第二波形更为复杂。
在本申请中，所提到的扁平结构帘线指的使帘线在横截面上具有不一致的长短径。
图6(a)、图6(b)为扁平结构帘线上不平整表面形貌的俯视图，以及不平整表面形貌在帘线横截面上的投影，不平整的表面形貌投影即指AB长度在横截面圆周上的投影。投影角度α满足0＜α＜180°，AB同时也是解捻钢丝上第二波形的长度。
图7(a)、图7(b)为另一种形式扁平结构帘线上不平整表面形貌的俯视图，以及不平整表面形貌在帘线横截面上的投影，不平整表面形貌投影即指CD长度在横截面圆周上的投影，投影角度α满足0＜α＜120°，其中CD同时也是解捻钢丝上第二波形的长度。
投影角度α的计算方法如下，如图13(a)、图13(b)所示，在一定张力的前提下，一般为钢丝破断力的20％，测量预变形后钢丝波形的波长E，则α＝360×E/L。
以1×5×0.30的扁平结构帘线为例，通过选用不同的变形齿可以获得搓捻前不同周期变形的钢丝，捻制后得到的帘线各性能指标见下表1。
表1
Figure PCTCN2022128486-appb-000001
Figure PCTCN2022128486-appb-000002
以1×6×0.30的扁平结构帘线为例，通过选用不同的变形齿可以获得搓捻前不同周期变形的钢丝，捻制后得到的帘线各性能指标见下表2。
表2
Figure PCTCN2022128486-appb-000003
Figure PCTCN2022128486-appb-000004
从表1和表2中的数据可以明显看出，本发明中的帘线与现有技术中的帘线相比，表现出较好的渗胶率性能和帘线不同方向上的弯曲刚度性能差异。虽然，帘线的强度会存在降低的风险，但风险可以通过相应的手段进行避免，例如通过调整变形齿的齿形，增大钢丝变形的波高与波长，降低钢丝在周期预变形过程中的弯曲半径，从而降低预变形钢丝在搓捻后的强度损失。预变形波长的增大会使搓捻后帘线不平整表面形貌AB的长度增加，如图6中的AB段，从而增加了α的角度。本申请提供的帘线还降低了断裂伸长率。
仍以1×5×0.30的扁平结构帘线为例，按照本发明中的制造方法捻制后得到的帘线各性能指标见下表3。
表3
  对比例 实施例
规格 5×0.30 5×0.30
长径/短径 1.17 1.19
捻距mm 18.2 18.3
预变形周期L / 18.2
α° / 135
断裂载荷对比 100％ 98％
附胶后长径方向与短径方向的弯曲刚度 1.29 1.30
比    
压力降法测渗胶率％ 100％ 100％
断裂伸长率 100％ 95％
粘合抽出力对比 100％ 110％
从表3中的数据显示，本发明中帘线与现有技术中的扁平结构帘线相比，帘线表面不平整的表面状态所产生的机械咬合作用使发明具有较高的粘合抽出力。
实施例2
本申请还公开了钢丝帘线的生产方法，该方法包括如下步骤：使钢丝接受周期性的变形处理，从而使所述钢丝在经过捻股机捻制后具有周期性的复合波形；使至少一根变形处理后的钢丝与其它钢丝捻合成帘线；在捻合过程中，将钢丝中的周期性波形沿所述帘线轴向的相同位置设置，所述相同位置为一个或相对称的两个，以使所述帘线轴向的相同位置具有不平整的表面形貌。通过该方法可生产出实施例1中公开的帘线。
在本申请中，至少一根变形处理后的钢丝与其它钢丝捻合成帘线，在该方式中，其它钢丝可以为经过本申请中周期性变形处理后的钢丝或者是没有经过变形处理的钢丝。
进一步地，使钢丝接受周期性的变形处理是指在长度方向上接受周期性的变形处理，周期长度可以为0.5L或L。其中，L为帘线解捻钢丝的长度。
本发明中钢丝周期性变形，其实现方法为依靠具有周期性排布的部分齿形结构的变形装置1进行变形处理，如图11至图13所示。
帘线表面不平整的形貌的范围受变形装置1齿形的控制，当齿形较大时，得到的第二波形长度越长，则变形区域在帘线横截面上投影所占角度越大。同时， 当变形齿形较大时，钢丝受到的弯曲变形的曲率半径相对较大，使钢丝在搓捻后，不会增加钢丝在捻制过程中的破断力损失，与常规帘线相比，破断力基本无差别。
如图14(a)、图14(b)所示，帘线解捻钢丝的长度L的计算方法为
Figure PCTCN2022128486-appb-000005
其中：T为捻距，D为帘线的直径，不规则帘线直径的D取最大直径和最小直径的平均值，d为钢丝的直径。
类似的，一种1×n结构的帘线或一种1+n结构的帘线，或一种层状结构的帘线，最外层的钢丝数量为n，n≥5，均可以按照上述方式进行生产。
图11为本发明中扁平结构帘线生产的实施办法示意图，帘线从各放线单元中出线后，经过钢丝预变形装置1从而使各钢丝产生周期性的预变形，然后经过捻合点搓捻在一起。图12为变形装置1的其中一对变形齿(包括上变形齿11和下变形齿12)结构示意图，其实际变形齿的对数可根据需要变形的钢丝数量进行设置。由于组成帘线的各钢丝中，第二波形位置的周期性控制，使得钢丝搓捻成帘线时，各钢丝上的第二波形有规律的排列在帘线的一侧方向上，形成不平整的帘线表面形貌，同时使帘线在后续使用校直器进行应力消除过程中，在该方向上形成扁平结构。
实施例3
基于实施例1提供的钢丝帘线，本申请还提供了一种具有实施例中钢丝帘线的轮胎。
由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发 明包含。

Claims (12)

  1. 一种钢丝帘线，由多根钢丝捻制而成，其特征在于，所述钢丝中至少一根具有形变以使所述帘线具有不平整的表面形貌，所述不平整的表面形貌位于所述帘线轴向的相同位置，所述相同位置为一个或相对称的两个，以使所述帘线在横截面上具有数值不等的长径和短径。
  2. 根据权利要求1所述的钢丝帘线，其特征在于，所述帘线为1×n结构的帘线、1+n结构的帘线或层状结构的帘线，所述层状结构的帘线的最外层钢丝数量为n；其中，n≥5。
  3. 根据权利要求1或2所述的钢丝帘线，其特征在于，所述帘线的解捻钢丝中至少存在一根钢丝具有周期性的复合波形，所述复合波形包括第一波形及叠加在所述第一波形上的第二波形。
  4. 根据权利要求3所述的钢丝帘线，其特征在于，单位帘线长度上的每根所述解捻钢丝在横截面上投影中，由第二波形产生的不平滑的曲线所在的方位均相同。
  5. 根据权利要求3所述的钢丝帘线，其特征在于，单位捻距长度上，所有解捻钢丝的第二波形位置将沿帘线轴向方向依次排列。
  6. 根据权利要求3所述的钢丝帘线，其特征在于，所述帘线解捻钢丝中所有的钢丝均具有周期性的复合波形。
  7. 根据权利要求1所述的钢丝帘线，其特征在于，所述不平整的表面形貌在所述帘线横截面上的投影所占的范围为0°～180°。
  8. 根据权利要求7所述的钢丝帘线，其特征在于，所述不平整的表面形貌在所述帘线横截面上的投影所占的范围为0°～120°。
  9. 根据权利要求1所述的钢丝帘线，其特征在于，所述长径与所述短径的比 值范围为1～1.546。
  10. 根据权利要求9所述的钢丝帘线，其特征在于，所述长径与所述短径的比值范围为1～1.394。
  11. 一种权利要求1-10任一项所述的钢丝帘线的生产方法，其特征在于，包括：
    使钢丝接受周期性的变形处理，从而使所述钢丝在经过捻股机捻制后具有周期性的复合波形；
    使至少一根变形处理后的钢丝与其它钢丝捻合成帘线；在捻合过程中，将钢丝中的周期性波形沿所述帘线轴向的相同位置设置，所述相同位置为一个或相对称的两个，以使所述帘线轴向的相同位置具有不平整的表面形貌。
  12. 一种轮胎，其特征在于，包括权利要求1-10任意一项所述的钢丝帘线。
PCT/CN2022/128486 2022-08-31 2022-10-31 一种钢丝帘线、其生产方法及轮胎 WO2024045308A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211051125.8 2022-08-31
CN202211051125.8A CN115404709B (zh) 2022-08-31 2022-08-31 一种钢丝帘线、其生产方法及轮胎

Publications (1)

Publication Number Publication Date
WO2024045308A1 true WO2024045308A1 (zh) 2024-03-07

Family

ID=84162781

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/128486 WO2024045308A1 (zh) 2022-08-31 2022-10-31 一种钢丝帘线、其生产方法及轮胎

Country Status (3)

Country Link
CN (1) CN115404709B (zh)
LU (1) LU506939A1 (zh)
WO (1) WO2024045308A1 (zh)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264071A2 (de) * 1986-10-16 1988-04-20 Akzo N.V. Luftreifen mit Flachcorden
JPH0291291A (ja) * 1988-09-27 1990-03-30 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JPH05186976A (ja) * 1991-12-28 1993-07-27 Toyo Tire & Rubber Co Ltd タイヤ用スチールコードおよびラジアルタイヤ
US5661966A (en) * 1996-06-27 1997-09-02 Tokyo Rope Manufacturing Co. Ltd. Steel cord for reinforcement of off-road tire, method of manufacturing the same, and off-road tire
JP2000017587A (ja) * 1998-06-29 2000-01-18 Bridgestone Corp ゴム物品補強用スチールコードおよび空気入りラジアルタイヤ
JP2006283198A (ja) * 2005-03-31 2006-10-19 Kanai Hiroaki スチールコードおよびタイヤ
JP2007092259A (ja) * 2005-09-30 2007-04-12 Kanai Hiroaki スチールコードおよび自動車用タイヤ
JP2007092261A (ja) * 2005-09-30 2007-04-12 Kanai Hiroaki スチールコードおよび自動車用タイヤ
CN205171069U (zh) * 2015-11-30 2016-04-20 江苏宝钢精密钢丝有限公司 一种轮胎胎圈加强层用钢帘线
CN206090153U (zh) * 2016-08-08 2017-04-12 江苏宝钢精密钢丝有限公司 一种轮胎带束层用钢帘线

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277689B1 (it) * 1995-12-21 1997-11-11 Pirelli Cordicella metallica di rinforzo da impiegarsi particolarmente in manufatti compositi a matrice elastomerica procedimento ed apparato
CN203782474U (zh) * 2014-03-05 2014-08-20 江苏宝钢精密钢丝有限公司 一种汽车轮胎用钢帘线
CN106906681A (zh) * 2017-01-19 2017-06-30 江苏兴达钢帘线股份有限公司 一种（2+7）结构的轮胎带束层用钢帘线
CN209975022U (zh) * 2018-11-10 2020-01-21 江苏兴达钢帘线股份有限公司 一种高渗胶性能子午钢丝帘线

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264071A2 (de) * 1986-10-16 1988-04-20 Akzo N.V. Luftreifen mit Flachcorden
JPH0291291A (ja) * 1988-09-27 1990-03-30 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JPH05186976A (ja) * 1991-12-28 1993-07-27 Toyo Tire & Rubber Co Ltd タイヤ用スチールコードおよびラジアルタイヤ
US5661966A (en) * 1996-06-27 1997-09-02 Tokyo Rope Manufacturing Co. Ltd. Steel cord for reinforcement of off-road tire, method of manufacturing the same, and off-road tire
JP2000017587A (ja) * 1998-06-29 2000-01-18 Bridgestone Corp ゴム物品補強用スチールコードおよび空気入りラジアルタイヤ
JP2006283198A (ja) * 2005-03-31 2006-10-19 Kanai Hiroaki スチールコードおよびタイヤ
JP2007092259A (ja) * 2005-09-30 2007-04-12 Kanai Hiroaki スチールコードおよび自動車用タイヤ
JP2007092261A (ja) * 2005-09-30 2007-04-12 Kanai Hiroaki スチールコードおよび自動車用タイヤ
CN205171069U (zh) * 2015-11-30 2016-04-20 江苏宝钢精密钢丝有限公司 一种轮胎胎圈加强层用钢帘线
CN206090153U (zh) * 2016-08-08 2017-04-12 江苏宝钢精密钢丝有限公司 一种轮胎带束层用钢帘线

Also Published As

Publication number Publication date
LU506939A1 (en) 2024-04-22
CN115404709B (zh) 2023-05-30
CN115404709A (zh) 2022-11-29

Similar Documents

Publication Publication Date Title
CN102066653B (zh) 橡胶制品加强用钢丝帘线及采用该钢丝帘线的充气轮胎
JP5883898B2 (ja) タイヤ補強用スチールコードおよびこれを適用したラジアルタイヤ
WO2010073641A1 (ja) ゴム物品補強用スチールコードおよびそれを用いた空気入りタイヤ
JP4646770B2 (ja) スチールコードおよび自動車用タイヤ
JP2012516393A (ja) 楕円形コードの芯として構成された波形状偏平ワイヤ
EP3009560B1 (en) Method of manufacturing a steel cord for a tire reinforcement
WO2024045308A1 (zh) 一种钢丝帘线、其生产方法及轮胎
JP4633517B2 (ja) スチールコードおよびタイヤ
KR101468587B1 (ko) 타이어 보강용 스틸코드
JP2001234486A (ja) スチールコード及びゴム複合体
JP2008200737A (ja) ゴム物品用補強材の製造方法
JP2018188750A (ja) ゴム物品補強用スチールコード及びタイヤ
JP6077315B2 (ja) スチールコード、その製造方法およびそれを用いた空気入りタイヤ
KR100785241B1 (ko) 래디얼 타이어용 스틸코드
JP3148845B2 (ja) タイヤ補強用スチールワイヤ
JP4678915B2 (ja) ゴム物品の補強に供するスチールフィラメントおよびその矯正方法
JPH04214485A (ja) ゴム物品補強用金属コード
JPH11335985A (ja) スチールコードおよびラジアルタイヤ
KR100366069B1 (ko) 타이어 보강용 스틸코드와 그 제조 방법
JP2010115981A (ja) 空気入りラジアルタイヤ
JPH0624209A (ja) 空気入りラジアルタイヤ
JP2004058707A (ja) 空気入りラジアルタイヤ
JP3140585B2 (ja) スチールコードおよびその製造方法
JP2010031431A (ja) ゴム製品補強用スチールコード
WO2016080468A1 (ja) 炭素鋼線およびその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22957124

Country of ref document: EP

Kind code of ref document: A1