WO2020113610A1 - 一种多边形层状结构的钢丝帘线的生产工艺 - Google Patents

一种多边形层状结构的钢丝帘线的生产工艺 Download PDF

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Publication number
WO2020113610A1
WO2020113610A1 PCT/CN2018/120162 CN2018120162W WO2020113610A1 WO 2020113610 A1 WO2020113610 A1 WO 2020113610A1 CN 2018120162 W CN2018120162 W CN 2018120162W WO 2020113610 A1 WO2020113610 A1 WO 2020113610A1
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Prior art keywords
monofilament
pay
wheel
twisting
rotating body
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PCT/CN2018/120162
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English (en)
French (fr)
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刘锦兰
张正裕
马卫铭
潘振国
曹恒祥
潘春东
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江苏兴达钢帘线股份有限公司
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Publication of WO2020113610A1 publication Critical patent/WO2020113610A1/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
    • 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
    • D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/08—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position
    • D07B3/10—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position with provision for imparting more than one complete twist to the ropes or cables for each revolution of the take-up reel or of the guide member

Definitions

  • the invention relates to the technical field of production of radial tire steel cords, in particular to a production process of steel cords with a polygonal cross-section and a layered structure.
  • Radial tires are car tires developed as the automobile industry continues to adapt to the development of highways. They use steel cords as the tire's skeleton material. Compared with the previous fiber skeleton tires, the radial tires have a load-bearing capacity and wear resistance. The performance, heat dissipation performance, puncture resistance, cutting resistance, impact resistance and wet skid resistance are all more excellent, which can meet the needs of high-speed driving and heavy-duty engineering vehicles.
  • Steel cords are a vital component of radial tires, and their usage in tires is very large; for vehicles with different uses and environments, the structure of steel cords in tires is also diverse.
  • a steel cord with a polygonal cross-section and a layered structure is a steel cord commonly used for radial tires.
  • Radial tires have high performance requirements, and the current layered steel cords commonly used in radial tires are basically processed separately with different layers and multiple strands of monofilament, and finally twisted.
  • This multi-step production method is in addition to In addition to the relatively low production efficiency, it will also cause insufficient stress relief of the inner and outer steel wires, a high rate of defective twisting of the finished steel wire, and a significant downward trend in fatigue performance, resulting in the production of steel cord products with unstable structure, performance, and tires Fatigue resistance decreases.
  • how to improve the production efficiency of steel cords, and maximize the utilization rate of materials, and reduce production costs are also an important factor to improve the market competitiveness of products.
  • the object of the present invention is to provide an improved production process of polygonal layered steel cords, which can stabilize the state of the steel structure, improve the performance index of the steel wire, and improve the truck Radial tire performance, improve the service life of radial tires for trucks; at the same time improve the production efficiency of steel cord.
  • a production process of a steel cord with a polygonal layered structure according to the present invention is produced by using a double-twisting machine which is placed outside and retracted.
  • the production process includes the following steps:
  • the inner monofilament is placed on the first I-shaped wheel of the pay-off table, and the middle monofilament is placed on the second I-shaped wheel of the pay-off table.
  • the outer monofilament is evenly distributed on the pay-off rotating body
  • the third pay-off I-shaped wheel inside; the pay-off sequence is inner layer monofilament ⁇ middle layer monofilament ⁇ outer layer monofilament;
  • S2 Distribute the middle layer monofilaments and inner layer monofilaments evenly on the first distribution tray, and twist them through the first hub nozzle; evenly distribute the outer layer monofilaments on the second distribution tray, and pass through the first collection
  • the inner monofilament and middle monofilament strands of the yarn nozzle are twisted and formed by the second hub at the same time; the pay-off rotating body, the first branching disc, the first hub, the second branching disc and the first The second hubs are arranged side by side in the same direction from right to left;
  • a take-up rotating body is provided on the left side of the wire passing wheel, which is provided with a lower traction wheel and a main shaft pulley part.
  • the wire bundle passes from the line passing wheel to the main shaft pulley part and then to the lower traction wheel. Rotate, while the end of the lower traction wheel is fixed, and the take-up rotating body completes the second twist every time the wire-revolving rotating body rotates, and the steel wire is twisted into a rope; the pay-off rotating body and the take-up rotating body rotate in the same direction.
  • the steel cord is a steel cord with a structure of 1+6+12 and a cross section of a regular hexagon.
  • the inner layer monofilament, the middle layer monofilament and the outer layer monofilament are ordinary strength, high strength, ultra high strength, extra high strength or very high strength steel wire.
  • the production process of the polygonal steel cord of the present invention is a multi-stranded monofilament twisting process, the structure of the steel cord is stable, the performance is good and the production efficiency, the defective rate of the finished steel wire twisted cross-back yarn is reduced, and the yield rate is significantly improved. It is used in the production of polygonal layered steel cords with different strength levels; suitable for the promotion and application in the field of steel cord production.
  • FIG. 1 is a schematic diagram showing the process positions of the polygon steel cord production process of the present invention
  • FIG. 2 is a schematic diagram of a cross-sectional structure of a regular hexagonal three-layer structure steel cord according to an embodiment of the present invention.
  • the polygonal steel cord of the present invention adopts an outer double retractable type
  • the twisting machine is used for production.
  • the so-called outside-twisting double-twisting machine is the take-up reel, which is placed inside the rotating body (flywheel disc) of the double-twisting machine, and the take-up reel is placed on the rotating body (flywheel disc).
  • S2 Distribute 6 monofilaments 02 in the middle layer and 1 monofilament 01 in the inner layer uniformly on the first distribution disc 40, and twist them through the first hub 41; evenly distribute the 12 monofilaments 03 in the outer layer in
  • the second distribution disc 43 is formed by twisting and twisting the inner monofilament and the intermediate monofilament strands that have been twisted by the first hub 41 through the second hub 45; the pay-off rotating body 30 and the first branch
  • the tray 40, the first hub 41, the second branching tray 43, and the second hub 45 are arranged side by side in the same direction from right to left;
  • the thread passing wheel 47 is arranged on the left side of the second hub 45, and the second hub 45 does not rotate during twisting, and the thread passing wheel 47 carries the steel wire bundle to rotate with the pay-out rotating body 30 Because the wire bundle is fixed at the 45 end of the second hub, the 47 end of the wire wheel rotates, and the pay-off rotating body 30 completes the first twist every time it makes one revolution;
  • a take-up rotating body 50 is provided on the left side of the wire passing wheel 47, which is provided with a lower traction wheel 52 and a main shaft pulley member 51, and the wire harness passes from the passing wheel 47 to the main shaft pulley member 51 to the lower traction wheel 52, The steel wire bundle rotates at the end of the main shaft pulley 51, and the end of the lower traction wheel 52 is fixed.
  • the take-up rotating body 50 rotates once, the second twist is completed, and the steel wire is twisted into a rope; the pay-out rotating body 30 and the take-up rotating body 50 rotate in the same direction.
  • the steel cord of the regular hexagonal layered structure of the above-mentioned embodiment of the present invention undergoes one-time twist forming during the production process.
  • the production process uses a combination of internal take-up type and counter-twist type. All the rotating parts, including the pay-out rotary body 30, the take-up wheel 47, and the take-up rotary body 50 (spindle pulley 51), rotate in the same direction. Each rotation of the monofilament twisted twice (twisting angle close to 4 ⁇ ), to achieve stress relief without twisting.
  • the production method of the steel cord of the regular hexagonal multilayer structure of the above embodiment of the present invention has the following advantages compared with the common production method:
  • the amount of cross-back yarns produced by twisted defective products decreased from 2.5 tons/month to 0.5 tons/month, and the pass rate increased from 96% to 98%;
  • the outer layer of 12 monofilaments is twisted and twisted without twisting, and the ton of flat broken wire is reduced from 1.8 times/ton to 0.5 times/ton.
  • the production process of the polygonal steel cord of the present invention is suitable for polygons with different strength levels such as ordinary strength (NT), high strength (HT), ultra high strength (ST), ultra high strength (UT), and extremely high strength (MT) Layered structure steel cord production; multi-strand monofilament twisting and forming at a time, the structure of the steel cord is stable, the performance is good and the production efficiency and yield rate are significantly improved, which is suitable for the promotion and application of the steel cord production field.
  • NT ordinary strength
  • HT high strength
  • ST ultra high strength
  • UT ultra high strength
  • MT extremely high strength

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  • Ropes Or Cables (AREA)

Abstract

一种多边形层状结构的钢丝帘线的生产工艺，其包括步骤：将内层和中间层单丝（01、02）分别外置于放线台（10）的工字轮（11、12）上，外层单丝（03）均匀分布在放线旋转体（30）内部的放线工字轮（32）上，放线顺序为内层单丝（01）→中间层单丝（02）→外层单丝（03）；将中间层及内层单丝经过分线盘（40）和第一集线咀（41）进行编捻芯股，外层单丝（03）均匀分布于第二分线盘（43），与编捻的芯股同时经过第二集线咀（45）编捻成型；第二集线咀（45）不转动，由过线轮（47）带着钢丝束随放线旋转体（30）一起转动，完成第一次捻制；钢丝束在收线旋转体（50）的主轴滑轮件（51）端旋转，下牵引轮（52）端固定，收线旋转体（50）旋转完成第二次捻制，钢丝编捻成绳。该生产工艺使得多股单丝一次加捻成型，钢帘线结构稳定、性能良好且良品率显著提高。

Description

一种多边形层状结构的钢丝帘线的生产工艺 技术领域
本发明涉及子午线轮胎钢丝帘线生产技术领域，特别涉及一种截面为多边形、层状结构的钢丝帘线的生产工艺。
背景技术
子午线轮胎是随着汽车工业不断适应高速公路的发展而发展起来的车用轮胎，其采用钢帘线作为轮胎的骨架材料，与以前的纤维骨架的轮胎相比，子午线轮胎的承载能力、耐磨性、散热性能以及耐穿刺、耐切割、耐冲击以及防湿滑性能都更加优异，可以满足高速行驶和载重工程车辆的使用需求。
钢帘线是子午线轮胎的至关重要的组成部件，在轮胎中的使用量非常大；对于不同用途的车辆和使用环境，轮胎中的钢帘线的结构也多种多样。截面为多边形且为层状结构的钢丝帘线就是一种子午线轮胎常用的钢丝帘线。子午线轮胎的性能要求较高，而目前的子午线轮胎常用的层状结构的钢丝帘线基本采用不同层、多股单丝分别加工，最后再捻制的生产方式，这种多步骤的生产方式除了生产效率比较低以外，还会造成内、外层钢丝应力消除不充分，成品钢丝捻制不良率偏高，疲劳性能下降趋势明显，造成生产的钢丝帘线产品结构、性能不稳定、轮胎使用钢丝耐疲劳性能下降。另外，在当前市场竞争越来越激励的情况下，如何提高钢帘线的生产效率，并尽可能的提高材料的利用率，降低生产成本也是提高产品市场竞争力的一个重要因素。
发明内容
针对现有技术中多边形钢丝帘线生产工艺存在的问题，本发明的目的是提供一种改进的多边形层状结构钢丝帘线的生产工艺，可以稳定钢丝结构状态，提升钢丝性能指标，改善载重车子午线轮胎性能，提高载重车子午线轮胎使用寿命；同时提高钢丝帘线的生产效率。
为达到本发明的目的，本发明的一种多边形层状结构的钢丝帘线的生产工艺，其采用外放内收式双捻机进行生产，所述的生产工艺包括如下步骤：
S1：将内层单丝外置于放线台的第一工字轮上，中间层单丝外置于放线台的第二工字轮上，外层单丝均匀分布在放线旋转体内部的第三放线工字轮上；放线顺序依次为内层单丝→中间层单丝→外层单丝；
S2：将中间层单丝以及内层单丝均匀分布于第一分线盘，经过第一集线咀进行编捻；将外层单丝均匀分布于第二分线盘，与经过第一集线咀编捻的内层单丝和中间单丝股线同时经过第二集线咀编捻成型；放线旋转体、第一分线盘、第一集线咀、第二分线盘以及第二集线咀从右向左在同一方向上依次排列设置；
S3：将过线轮设置在第二集线咀的左侧，且编捻时，第二集线咀不转动，由过线轮带着钢丝束随放线旋转体一起转动，由于钢丝束在第二集线咀端固定，过线轮端旋转，放线旋转体每旋转一周，完成第一次捻制；
S4：在过线轮的左侧设置收线旋转体，其内设有下牵引轮以及主轴滑轮件，钢丝束从过线轮至主轴滑轮件再至下牵引轮，钢丝束在主轴滑轮件端旋转，而下牵引轮端固定，收线旋转体每旋转一周，完成第二次捻制，钢丝编捻成绳；放线旋转体与收线旋转体同向转动。
优选的，所述的钢帘线为1+6+12结构的截面为正六边形的钢帘线。
再优选的，所述的内层单丝，中间层单丝以及外层单丝为普通强度、高强度、超高强度、特高强度或极高强度钢丝。
本发明的多边形钢丝帘线的生产工艺，多股单丝一次加捻成型，钢帘线的结构稳定、性能良好且生产效率，成品钢丝捻制交叉背丝不良率下降，良品率显著提高，适用于不同强度等级的多边形层状结构钢帘线生产；适合在钢帘线生产领域的推广与应用。
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所示为本发明的多边形钢帘线生产工艺的工序位置示意图；
图2所示为本发明的一个实施例的正六边形三层结构钢帘线的截面结构示意图。
具体实施方式
结合附图本发明的多边形钢丝帘线的生产工艺的工艺过程及优点详述如下。
参照图1所示，以图2所示的一种1+6+12结构的截面为正六边形的钢丝帘线的生产过程为例，本发明的多边形钢丝帘线采用外放内收式双捻机进行生产，所谓的外放内收式双捻机即收线工字轮安放在双捻机的旋转体(飞轮盘)的内部， 而放线工字轮则安放在旋转体(飞轮盘)外面的放线装置(放线台)上；其生产工艺包括如下步骤：
S1：将内层1根单丝01外置于放线台10的第一工字轮11上，中间层6根单丝02外置于放线台10的第二工字轮12上，外层12根单丝03均匀分布在放线旋转体30内部的第三放线工字轮32上；放线顺序依次为内层单丝01→中间层单丝02→外层单丝03；
S2：将中间层6根单丝02以及内层1根单丝01均匀分布于第一分线盘40，经过第一集线咀41进行编捻；将外层12根单丝03均匀分布于第二分线盘43，与经过第一集线咀41编捻的内层单丝和中间单丝股线同时经过第二集线咀45编捻成型；放线旋转体30、第一分线盘40、第一集线咀41、第二分线盘43以及第二集线咀45从右向左在同一方向上依次排列设置；
S3：将过线轮47设置在第二集线咀45的左侧，且编捻时，第二集线咀45不转动，由过线轮47带着钢丝束随放线旋转体30一起转动，由于钢丝束在第二集线咀45端固定，过线轮47端旋转，放线旋转体30每旋转一周，完成第一次捻制；
S4：在过线轮47的左侧设置收线旋转体50，其内设有下牵引轮52以及主轴滑轮件51，钢丝束从过线轮47至主轴滑轮件51再至下牵引轮52，钢丝束在主轴滑轮件51端旋转，而下牵引轮52端固定，收线旋转体50每旋转一周，完成第二次捻制，钢丝编捻成绳；放线旋转体30与收线旋转体50同向转动。
本发明的上述实施例的正六边形层状结构的钢帘线，其生产过程经过一次加捻成型。生产工艺采用内收线式与反扭式的组合，所有的旋转部件包括放线旋转体30、过线轮47、收线旋转体50(主轴滑轮件51)都同向转动，放线旋转体每转动一周，单丝便加捻了两次(扭转角度接近4π)，实现应力释放无扭转捻制。以捻合点作为固定点，右侧放线旋转体内12根放线单丝与左侧收线旋转体50同向转动；中间层6根单丝02与内层1根芯线单丝01与外层12根单丝03经过捻合点一起加捻，因外层12根单丝反扭式旋转，残余内应力减小，内、外层钢丝加扭转相互抵消，成品钢丝捻制交叉背丝不良率下降，结构性能稳定，疲劳性能提升。
经实际生产验证，本发明的上述实施例的正六边形多层结构的钢帘线生产方式与常用生产方式相比，优点如下：
1、捻制不良品交叉背丝产生量由2.5吨/月下降至0.5吨/月，合格率由96％提升至98％；
2、钢丝性能指标提升：冲击功性能平均提升1.46J(焦耳)；疲劳性能平均上升至748次；
3、外层12根单丝反扭式无扭转捻制，吨平断丝由1.8次/吨下降至0.5次/吨。
上述实施例仅以正六边形多层结构的钢帘线的生产为例来进行生产工艺及性能比较说明，应当理解的是，本发明的生产工艺也使用其他多边形结构的多层结构钢帘线的生产。
本发明的多边形钢丝帘线的生产工艺适用于普通强度(NT)、高强度(HT)、超高强度(ST)、特高强度(UT)、极高强度(MT)等不同强度等级的多边形层状结构钢帘线生产；多股单丝一次加捻成型，钢帘线的结构稳定、性能良好且生产效率及良品率显著提高，适合在钢帘线生产领域的推广与应用。
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 (3)

  1. 一种多边形层状结构的钢丝帘线的生产工艺，其采用外放内收式双捻机进行生产，所述的生产工艺包括如下步骤：
    S1：将内层单丝外置于放线台的第一工字轮上，中间层单丝外置于放线台的第二工字轮上，外层单丝均匀分布在放线旋转体内部的第三放线工字轮上；放线顺序依次为内层单丝→中间层单丝→外层单丝；
    S2：将中间层单丝以及内层单丝均匀分布于第一分线盘，经过第一集线咀进行编捻；将外层单丝均匀分布于第二分线盘，与经过第一集线咀编捻的内层单丝和中间单丝股线同时经过第二集线咀编捻成型；放线旋转体、第一分线盘、第一集线咀、第二分线盘以及第二集线咀从右向左在同一方向上依次排列设置；
    S3：将过线轮设置在第二集线咀的左侧，且编捻时，第二集线咀不转动，由过线轮带着钢丝束随放线旋转体一起转动，由于钢丝束在第二集线咀端固定，过线轮端旋转，放线旋转体每旋转一周，完成第一次捻制；
    S4：在过线轮的左侧设置收线旋转体，其内设有下牵引轮以及主轴滑轮件，钢丝束从过线轮至主轴滑轮件再至下牵引轮，钢丝束在主轴滑轮件端旋转，而下牵引轮端固定，收线旋转体每旋转一周，完成第二次捻制，钢丝编捻成绳；放线旋转体与收线旋转体同向转动。
  2. 如权利要求1所述的一种多边形层状结构的钢丝帘线的生产工艺，其特征在于，所述的钢帘线为1+6+12结构的截面为正六边形的钢帘线。
  3. 如权利要求1或2所述的一种多边形层状结构的钢丝帘线的生产工艺，其特征在于，所述的内层单丝，中间层单丝以及外层单丝为普通强度、高强度、超高强度、特高强度或极高强度钢丝。
PCT/CN2018/120162 2018-12-03 2018-12-10 一种多边形层状结构的钢丝帘线的生产工艺 WO2020113610A1 (zh)

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