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WO2020113605A1 - 一种2+2+8×n结构的高渗胶性能钢丝帘线 - Google Patents

一种2+2+8×n结构的高渗胶性能钢丝帘线 Download PDF

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Publication number
WO2020113605A1
WO2020113605A1 PCT/CN2018/120153 CN2018120153W WO2020113605A1 WO 2020113605 A1 WO2020113605 A1 WO 2020113605A1 CN 2018120153 W CN2018120153 W CN 2018120153W WO 2020113605 A1 WO2020113605 A1 WO 2020113605A1
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Prior art keywords
steel
strand
core
wires
cord
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PCT/CN2018/120153
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English (en)
French (fr)
Inventor
刘锦兰
张正裕
马卫铭
潘振国
曹恒祥
Original Assignee
江苏兴达钢帘线股份有限公司
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Priority claimed from CN201822014752.XU external-priority patent/CN209975233U/zh
Priority claimed from CN201811467879.5A external-priority patent/CN109338768B/zh
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 WO2020113605A1 publication Critical patent/WO2020113605A1/zh

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords
    • 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

Definitions

  • the invention relates to the technical field of design and production of steel cords for radial tires, in particular to a 2+2+8 ⁇ N structure high permeability steel cord.
  • Steel cord is the main skeleton material of radial tires for vehicles, and its quality directly affects the service life of tires.
  • the steel cord is the main force-bearing component of the radial tire, which largely determines the strength of the tire and the profile after inflation.
  • the steel cord only has sufficient strength and rigidity, the tire's carrying capacity, safety performance, and comfortable driving. Sex can be guaranteed.
  • a cord structure commonly used for steel cords for radial tires is a 3+9 ⁇ 0.22W HT structure.
  • the inner and outer layers of the steel cord of this structure are closely arranged, the gap between the layers is small, and the rubber cannot effectively penetrate To the middle layer of steel wire, fatigue resistance and rubber leakage performance are not good, and the service life of the tire is short; in addition, considering the saving of energy consumption, on the basis of satisfying the performance, it is also necessary to reduce the weight of the steel cord as much as possible to reduce the weight of the tire. Adapt to the market demand for light weight, high quality and low cost.
  • the object of the present invention is to provide a low-cost steel curtain with stable glue penetration and high durability, which can be used for both belt and carcass reinforcement and can reduce the thickness of the cord Line, applied to high-performance and lightweight radial tires.
  • a 2+2+8 ⁇ N structure high-permeability steel cord of the present invention includes a core strand formed by twisting and twisting four core wires of a central layer and arranged in a core Eight outer strand steel wires around and twisted with the strands, the core wire includes two first wires and two second wires, the two first wires in the center layer are twisted first, two The second steel wire is twisted around the two first steel wires after twisting to form a core strand, and the eight outer strand steel wires are twisted around the core strand to form twelve steel cords with an elliptical cross-section.
  • the eight outer strand steel wires of the steel cord are twisted with the core strand steel wire as the axis, and the twist direction of the first steel wire in the middle layer and the second steel wire are twisted around the first steel wire
  • the twist direction of the eight wires of the outer layer and the outer layer is the same.
  • the twist direction is S twist.
  • the twist direction is Z twist.
  • the core strand of the steel cord has a first wire braided twisting length of 14 ⁇ 0.3 mm, and a second steel wire twisted around the first wire braided twisting length of 7 ⁇ 0.15 mm; outer layer steel wire
  • the twist pitch around the core strand 10 is 14 ⁇ 0.3 mm.
  • the four core wires of the steel cord and the outer strand wires have the same diameter.
  • the diameter of the steel wire is 0.215 ⁇ 0.005mm.
  • the eight outer strand steel wires are closely arranged around the core strand, and a glue infiltration channel is formed between the first and the last two steel wires.
  • the eight outer strand steel wires are evenly arranged around the core strand, and a glue infiltration channel is formed between each adjacent outer strand steel wires.
  • the center layer core strand and the outer layer steel wire of the steel cord of the present invention adopt the same direction braiding to increase the twisting distance between the core strand outer covering steel wire and the core wire steel wire, and improve the center layer core strand and the outer layer strand steel wire.
  • Strength increase the gap between the core wire and the core wire, provide a channel for the rubber flow when the tire is vulcanized, enhance the anchoring effect of the rubber on the outer layer and the core strand, and prevent the tire from being damaged due to strength and adhesion during use Resulting in tire failure, improve the tire's corrosion resistance, adhesion performance and adhesion retention, and increase the service life of the tire.
  • Figure 1 is a schematic diagram of a cross-sectional structure of a conventional steel cord with a 3+9 ⁇ N structure
  • FIG. 2 is a schematic cross-sectional structure diagram of a 2+2+8 ⁇ N structure high permeability steel cord of an embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional structure diagram of a high-permeability rubber cord with a 2+2+8 ⁇ N structure according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a cross-sectional structure formed by twisting a high-permeability rubber cord with a 2+2+8 ⁇ N structure according to the present invention
  • Figure 5 shows a schematic diagram of the cross-sectional structure of a 4+8 ⁇ N structure high-permeability steel cord after twisting.
  • FIG. 2 a schematic view of a cross-sectional structure of a twelve-strand steel cord with high permeability and 2+2+8 ⁇ N structure according to an embodiment of the present invention is shown in FIG. 2.
  • the twelve-strand steel cord includes a central layer A core strand 10 formed by braiding and twisting four core wires and eight outer strand wires 03 arranged around and twisting the core strand.
  • the core wire includes two first wires 01 and two second wires Steel wire 02, the two first steel wires 01 of the center layer are twisted first, two second steel wires 02 are wrapped around the two first steel wires 01 after the twisting and then twisted to form a core strand 10, and eight outer strand steel wires 03 Twisted around the core strand 10 to form twelve strands of steel cord with an oval cross-section.
  • the 2+2+8 ⁇ N structure has high-permeability adhesive properties, eight outer strand steel wires 03 of twelve strand steel cords, and core strand steel wires 01 and 02 of core strand 10
  • the twist direction of the first steel wire 01 in the middle layer is the same as the twist direction of the second steel wire 02 around the first steel wire 01 and the twist direction of the outer layer eight steel wires 03 around the core strand. It is S twist or Z twist.
  • the twisted pitch of the first strand 01 of the core strand of the steel cord is 14 ⁇ 0.3 mm, and the twist pitch of the second strand 02 around the first strand is 7 ⁇ 0.15mm; the outer strand steel wire 03 is twisted around the core strand 10 and the twist pitch is 14 ⁇ 0.3mm.
  • the steel wires 01, 02 and 03 of the twelve-strand steel cord with the same high-permeability 2+2+8 ⁇ N structure have the same diameter.
  • the steel wire The diameter is 0.215 ⁇ 0.005mm.
  • the eight outer strand steel wires 03 are closely arranged around the core strand 10 to form a relatively wide glue channel 110 between the first and the last two steel wires; or, it may be As shown in the cross-sectional structure of another embodiment of the invention shown in FIG. 3, the eight outer strand steel wires 03 are evenly arranged around the core strand 10, as shown in the following, a glue is formed between each adjacent outer strand steel wires 03 Channel; these two structural methods can achieve a better glue penetration effect.
  • the center layer core strand and the outer layer steel wire of the steel cord of this embodiment are co-twisted to improve the strength of the center layer core strand and the outer layer steel wire, and increase the gap between the core strand outer sheathed steel wire and the core strand steel wire.
  • Provides a channel for rubber flow during tire vulcanization enhances the anchoring effect of rubber on the outer strands and core strands, prevents tire failure due to strength and adhesion problems during tire use, improves the tire's corrosion resistance, adhesion performance and adhesion Combine the holding power and increase the service life of the tire.
  • the steel cord of the 2+2+8 structure of the present invention is also different from the steel cord of the 4+8 structure.
  • the cross-sectional structure looks almost the same, there is an essential difference: the steel wire of the 2+2+8 structure
  • the core strands of the cord are first twisted by two first steel wires 01 (see Figure 4), and two second steel wires 02 are twisted into two core wires around the two first steel wires 01; the core wire twisting distance is 14/7, full There is no dead angle for glue infiltration; as shown in Figure 5, the core strand of 4+8 structure steel cord is twisted by four steel wires, the central steel wire is easy to form a 3+1 structure, and the rubber is not easy to infiltrate. It will conduct the entire cord, accelerate cord aging and shorten the life cycle of the tire.
  • the invention provides a channel for the flow of rubber when the tire is vulcanized by increasing the twisting distance between the core stranded steel wire and the core wire and the gap between the sheathed wire and the core wire, and the rubber is anchored to the core wire to prevent the tire from During the use process, the steel cord and tire rubber adhesion failure; at the same time, the structure is in contact with the twisted yarn in the same direction, and the fatigue performance is good.
  • the direction is mixed, so that in the length direction of the cord, by appropriately crossing the monofilaments, the twisting length between the monofilaments can be uniform, and the monofilaments can be uniformly stressed; between the monofilaments Cross and because the filaments in the cross section are intertwined with each other, when the cord has a compressive force in the axial direction, the filaments are difficult to expand into a cage shape, which can improve the deformation resistance; because the gaps between the cross filaments form For the external force such as tension during tire production, the gap between the filaments can also be anchored, so stable glue penetration can be achieved; the intersection of the filaments makes the movement of the filaments difficult, and the cord cross section
  • the increase in the degree of filling of the silk leads to an increase in the rigidity of the cord. In this case, even the metal sheet is more difficult to penetrate the cord, which can effectively prevent the occurrence of tire puncture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Ropes Or Cables (AREA)

Abstract

一种2+2+8×N结构的高渗胶性能钢丝帘线，其包括中心层的四根芯线钢丝（01、02）编捻形成的芯股（10）以及排布在芯股（10）周围并与其编捻的八根外层股钢丝（03），芯线钢丝（01、02）包括两根第一钢丝（01）以及两根第二钢丝（02），中心层的两根第一钢丝（01）先编捻，两根第二钢丝（02）围绕编捻后的两根第一钢丝（01）再编捻形成芯股（10），八根外层股钢丝（03）围绕芯股（10）捻制，形成截面为椭圆形的十二股钢丝帘线。钢丝帘线的中心层芯股与外层钢丝采用同向编捻，增大芯股外包钢丝与芯股钢丝之间的间隙，为轮胎硫化时橡胶流动提供通道，增强橡胶对外层股和芯股的锚固作用，防止轮胎在使用过程因强度、粘合问题而导致的轮胎失效，改善轮胎的抗腐蚀性能、粘合性能及粘合保持力，提高轮胎的使用寿命。

Description

一种2+2+8×N结构的高渗胶性能钢丝帘线 技术领域
本发明涉及子午线轮胎用钢丝帘线设计及生产技术领域，特别涉及一种2+2+8×N结构的高渗胶性能钢丝帘线。
背景技术
钢丝帘线是车辆子午线轮胎的主要骨架材料，其质量的优劣直接影响着轮胎的使用寿命。钢丝帘线是子午线轮胎的主要受力部件，在很大程度上决定着轮胎的强度和充气后的轮廓，钢丝帘线只有具备足够的强度和刚度，轮胎的承载能力、安全性能、行驶的舒适性才能得到保障。子午线轮胎用钢丝帘线常用的一种帘线结构为3+9×0.22W HT结构，这种结构的钢丝帘线内外层之间排列较紧密，各层之间间隙较小，橡胶不能有效渗透到中间层钢丝，耐疲劳和渗胶性能不好，轮胎使用寿命短；另外，考虑到节约能源消耗，在满足使用性能的基础上，还需要尽量降低钢帘线的重量，减轻轮胎的重量，适应市场轻量化、高质量、低成本的需求。
发明内容
针对现有技术的问题，本发明的目的就是提供具备稳定的渗胶性以及高耐久性，可同时用于带束层以及胎体补强，并且可以降低帘布厚度的一种低成本的钢帘线，应用于高性能并且轻量化的子午线轮胎。
为达到本发明的目的，本发明的一种2+2+8×N结构的高渗胶性能钢丝帘线，其包括中心层的四根芯线钢丝编捻形成的芯股以及排布在芯股周围并与其编捻的八根外层股钢丝，所述的芯线钢丝包括两根第一钢丝以及两根第二钢丝，所述中心层的两根第一钢丝先编捻，两根第二钢丝围绕编捻后的两根第一钢丝再编捻形成芯股，八根外层股钢丝围绕芯股捻制，形成截面为椭圆形的十二股钢丝帘线。
优选的，所述的钢丝帘线的八根外层股钢丝以芯股的芯线钢丝为轴心编捻，中间层的第一钢丝的捻向与第二钢丝围绕第一钢丝编捻的捻向以及外层股八根钢丝围绕芯股编捻的捻向相同。
再优选的，所述的捻向为S捻。
再优选的，所述的捻向为Z捻。
再优选的，所述的钢丝帘线的芯股的第一钢丝编捻的捻距为14±0.3mm，第二钢丝围绕第一钢丝编捻的捻距为7±0.15mm；外层股钢丝围绕芯股10编捻的捻距为14±0.3mm。
再优选的，所述的钢丝帘线的四根芯线钢丝以及外层股钢丝的直径相同。
再优选的，所述的钢丝直径为0.215±0.005mm。
再优选的，在捻制时八根所述外层股钢丝是围绕芯股紧密排列，在首尾两根钢丝之间形成渗胶通道。
再优选的，在捻制时八根所述外层股钢丝是围绕芯股周围均匀排列，在每个相邻的外层股钢丝之间均形成渗胶通道。
本发明的所述的钢丝帘线的中心层芯股与外层钢丝采用同向编捻，增加芯股外包钢丝与芯线钢丝之间的捻距，提高中心层芯股和外层股钢丝的强度，增大芯股外包钢丝与芯股钢丝之间的间隙，为轮胎硫化时橡胶流动提供通道，增强橡胶对外层股和芯股的锚固作用，防止轮胎在使用过程因强度、粘合问题而导致的轮胎失效，改善轮胎的抗腐蚀性能、粘合性能及粘合保持力，提高轮胎的使用寿命。
附图说明
通过下面结合附图的详细描述，本发明前述的和其他的目的、特征和优点将变得显而易见。其中：
图1所示为现有的3+9×N结构的钢丝帘线的截面结构示意图；
图2所示为本发明的一实施例的2+2+8×N结构的高渗胶性能钢丝帘线的截面结构示意图；
图3所示为本发明的另一实施例的2+2+8×N结构的高渗胶性能钢丝帘线的截面结构示意图；
图4所示为本发明的2+2+8×N结构的高渗胶性能钢丝帘线捻制后形成的截面结构示意图；
图5所示为4+8×N结构的高渗胶性能钢丝帘线捻制后形成的截面结构示意图。
具体实施方式
结合附图本发明的高渗胶性能的钢丝帘线的结构特点及优点详述 如下。
参照图2所示的本发明的一实施例的2+2+8×N结构的高渗胶性能十二股钢丝帘线的截面结构示意图，所述的十二股钢丝帘线包括中心层的四根芯线钢丝编捻形成的芯股10以及排布在芯股周围并与其编捻的八根外层股钢丝03，所述的芯线钢丝包括两根第一钢丝01以及两根第二钢丝02，所述中心层的两根第一钢丝01先编捻，两根第二钢丝02围绕编捻后的两根第一钢丝01再编捻形成芯股10，八根外层股钢丝03围绕芯股10捻制，形成截面为椭圆形的十二股钢丝帘线。
在一较佳的实施方式中，所述的2+2+8×N结构的高渗胶性能十二股钢丝帘线的八根外层股钢丝03以芯股10的芯线钢丝01和02为轴心编捻，中间层的第一钢丝01的捻向与第二钢丝02围绕第一钢丝01编捻的捻向以及外层股八根钢丝03围绕芯股编捻的捻向相同，同为S捻或Z捻。
在另一较佳的实施方式中，所述的钢丝帘线的芯股第一钢丝01编捻的捻距为14±0.3mm，第二钢丝02围绕第一钢丝编捻的捻距为7±0.15mm；外层股钢丝03围绕芯股10编捻的捻距为14±0.3mm。
在本实施例中，所述的2+2+8×N结构的高渗胶性能十二股钢丝帘线的钢丝01、02、03直径相同，在一优选的实施方式中，所述的钢丝直径均为0.215±0.005mm。
在图2所示的实施例中，在捻制时8根外层股钢丝03是围绕芯股10紧密排列，在首尾两根钢丝之间形成比较宽的渗胶通道110；或者，也可以是如图3所示的发明的另一实施例的截面结构，8根外层股钢丝03是围绕芯股10周围均匀排列，如下在每个相邻的外层股钢丝03之间均形成渗胶通道；这两种结构方式都可以达到比较好的渗胶效果。
本实施例的钢丝帘线的中心层芯股与外层钢丝采用同向编捻，提高中心层芯股和外层股钢丝的强度，增大芯股外包钢丝与芯股钢丝之间的间隙，为轮胎硫化时橡胶流动提供通道，增强橡胶对外层股和芯股的锚固作用，防止轮胎在使用过程因强度、粘合问题而导致的轮胎失效，改善轮胎的抗腐蚀性能、粘合性能及粘合保持力，提高轮胎的使用寿命。
本发明的2+2+8×0.215ST与3+9×0.22WHT结构的钢丝帘线的性能检测对比如下表1：
Figure PCTCN2018120153-appb-000001
从上表1可以看出本发明的2+2+8×0.215结构的钢丝帘线相比目前常用的3+9×0.22结构的钢丝帘线的优势包括如下：
1)帘线直径小16％；
2)同向捻疲劳性能高50％；
3)线密度小9％；
4)橡胶渗透率100:30；
5)破断力线密度比高10％；
6)粘合力高11％；
7)吸收功高10％。
另外，本发明的2+2+8结构的钢丝帘线也不同于4+8结构的钢丝帘线，虽然从截面结构上看起来几乎一样，但是有本质区别：2+2+8结构的钢丝帘线的芯股，分别由两根第一钢丝01先捻(见图4)，两根第二钢丝02围绕两根第一钢丝01编捻成芯股；芯线捻距14/7，全渗胶无死角；见图5所示，4+8结构的钢丝帘线的芯股由四根钢丝捻制而成，中心钢丝易形成3+1结构，橡胶不易渗进，同时空气渗进后会传导整根帘线内部，加速帘线老化并缩短轮胎的使用周期。
本发明通过提高芯股外包钢丝与芯线钢丝之间捻距以及外包钢丝与芯线钢丝之间的间隙，为轮胎硫化时橡胶的流动提供通道，通过橡胶对芯股钢丝的锚固，防止轮胎在使用过程中因钢丝帘线与轮胎橡胶粘合失效；同时该结构同向捻线接触，疲劳性能好；芯线单丝按照同一方向捻制，单丝之间交叉以及非交叉部分在帘线长度方向混合，这样在帘线长度方向，通过实施适当的单丝之间交替交叉，能够使各单丝之间捻合长度均一化，各单丝之间都可以均匀受力；让单丝之间交叉并且因为在交叉部分的单丝之间相互缠绕限制，在帘线轴向有压缩力作用的时候，单丝难以膨胀变成笼状，能够提高变形抵抗力；因为交叉单丝之间形成间隙，对于在生产轮胎时受到的张力等外力，单丝之间的间隙也能够锚固，因此可以实现稳定的渗胶性；单丝之间交叉使单丝的移动变得困难，帘线断面的单丝填充度提高，从而使得帘线刚度提高，这种情况下即使是金属片也比较难穿透帘线，就可以有效防止轮胎爆胎的发生。
本发明并不局限于所述的实施例，本领域的技术人员在不脱离本发明的精神即公开范围内，仍可作一些修正或改变，故本发明的权利保护范围以权利要求书限定的范围为准。

Claims (9)

  1. 一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的钢丝帘线包括中心层的四根芯线钢丝编捻形成的芯股以及排布在芯股周围并与其编捻的八根外层股钢丝，所述的芯线钢丝包括两根第一钢丝以及两根第二钢丝，所述中心层的两根第一钢丝先编捻，两根第二钢丝围绕编捻后的两根第一钢丝再编捻形成芯股，八根外层股钢丝围绕芯股捻制，形成截面为椭圆形的十二股钢丝帘线。
  2. 如权利要求1所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的钢丝帘线的八根外层股钢丝以芯股的芯线钢丝为轴心编捻，中间层的第一钢丝的捻向与第二钢丝围绕第一钢丝编捻的捻向以及外层股八根钢丝围绕芯股编捻的捻向相同。
  3. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的捻向为S捻。
  4. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的捻向为Z捻。
  5. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的钢丝帘线的芯股的第一钢丝编捻的捻距为14±0.3mm，第二钢丝围绕第一钢丝编捻的捻距为7±0.15mm；外层股钢丝围绕芯股10编捻的捻距为14±0.3mm。
  6. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的钢丝帘线的四根芯线钢丝以及外层股钢丝的直径相同。
  7. 如权利要求6所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，所述的钢丝直径为0.215±0.005mm。
  8. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，在捻制时八根所述外层股钢丝是围绕芯股紧密排列，在首尾两根钢丝之间形成渗胶通道。
  9. 如权利要求2所述的一种2+2+8×N结构的高渗胶性能的钢丝帘线，其特征在于，在捻制时八根所述外层股钢丝是围绕芯股周围均匀排列，在每个相邻的外层股钢丝之间均形成渗胶通道。
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