CN206941290U

CN206941290U - It is a kind of improved（3+7）10 bursts of steel cords of structure

Info

Publication number: CN206941290U
Application number: CN201720098419.4U
Authority: CN
Inventors: 马卫铭; 吴葛荣; 曹恒祥; 武丹
Original assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Current assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2018-01-30
Anticipated expiration: 2027-01-19

Abstract

The utility model proposes a kind of 10 bursts of steel cords of improved (3+7) structure, it includes the cover wire that three a diameter of 0.175mm of superhigh intensity cored wire steel wire and seven a diameter of 0.20mm are evenly spaced in around cored wire and makees to compile sth. made by twisting in the same direction, it is 5.0mm that three cored wire steel wires, which compile the lay pitch twisted with the fingers, and it is 12.0mm that seven cover wires, which compile the lay pitch twisted with the fingers,；The section of cored wire is in equilateral triangle, and the section of steel cord is circle.Steel cord of the present utility model is using the larger steel wire of tensile strength, its diameter is less than the steel wire diameter used in traditional 3+6 shaped steel silk cord or 3+7 shaped steel silk cords, the lay pitch of steel wire is smaller, it is advantageously implemented the lightweight of tire, heat is low, oil consumption is few, while the impact resistance of steel cord, puncture-resistant superior performance.

Description

It is a kind of improved（3+7）10 bursts of steel cords of structure

Technical field

Steel cord for tire technical field is the utility model is related to, more particularly to one kind is advantageous to tire lightweight, has 10 bursts of steel cords of certain rigidity and improved (3+7) structure of fatigue performance.

Background technology

Current underloading truck tyre mostly uses 9 strands of steel of+6 outer layer silk winding arrangements of 3 cored wires with all-steel cord Cord, this steel cord glue permeation ability is poor, and the service life of tire is shorter.In order to improve this problem, in Publication No. A kind of 10 bursts of steel cords of+7 outer layer silk winding arrangements of 3 cored wires are disclosed in CN201080527Y patent document, still The steel wire diameter that the steel cord of this patent application publication uses is thicker, core line diameter 0.2mm, outer layer silk it is a diameter of 0.225mm, manufactured cord thickness is big, and it is heavier in turn result in the weight of tire, and heat is high, and fuel consumption is big；In addition, cord Bend loading, pliability and fatigue performance also can not increasingly meet higher and higher use demand；Therefore, it is thinner using diameter Superhigh intensity steel wire carry out steel cord production just into steel cord develop trend.

Utility model content

For the problem of cotton tyre cord thickness is thicker made of existing steel cord, the purpose of this utility model is to provide one Kind bend loading, pliability and fatigue performance are stronger；And can enough makes the lighter steel cord of tire weight.

To realize the purpose of this utility model, 10 strands of steel cord bags of improved (3+7) structure of one kind of the present utility model The cored wire steel wire and seven a diameter of 0.20mm for including three a diameter of 0.175mm of superhigh intensity are evenly spaced in around cored wire Cover wire, which is made to compile in the same direction, to be twisted with the fingers, and it is 5.0mm that three cored wire steel wires, which compile the lay pitch twisted with the fingers, and seven cover wires compile the lay pitch twisted with the fingers and are 12.0mm；The section of cored wire is in equilateral triangle, and the section of steel cord is circle.

Preferably, it is that S is twisted with the fingers that described cored wire compiles the twist direction twisted with the fingers with cover wire.

The beneficial effects of the utility model are that 10 bursts of steel cords of described (3+7) structure are larger using tensile strength Steel wire, its diameter are less than the steel wire diameter used in traditional 3+6 shaped steel silk cord or 3+7 shaped steel silk cords, the sth. made by twisting of steel wire Away from smaller, the lightweight of tire is advantageously implemented, heat is low, and oil consumption is few, while the impact resistance of steel cord, paracentesis resistance energy It is superior.

Brief description of the drawings

By detailed description below in conjunction with the accompanying drawings, the foregoing and other objects, features and advantages of the utility model will Become apparent.Wherein：

Fig. 1 show the structural representation of 10 bursts of steel cords of improved (3+7) structure of the present utility model；

Fig. 2 show the lay pitch schematic diagram of Fig. 1 steel cord.

Embodiment

With reference to accompanying drawing structure of the present utility model and feature, details are as follows.

The structural representation of 10 bursts of steel cords of reference picture 1 and improved (3+7) structure of the present utility model shown in Fig. 2 Figure, described steel cord includes three a diameter of 0.175mm cored wire steel wire 10 and seven a diameter of 0.20mm are evenly spaced in Cover wire 20 around cored wire, which is made to compile in the same direction, to be twisted with the fingers.

When steel cord of the present utility model carries out twisting, due to having used the unimach silk cord of small diameter, Therefore, lay pitch during twisting, the twist direction of different layers steel cord etc. is required for being redesigned accordingly.The lay pitch is big, productivity ratio Height, but fatigue performance declines, and this is due to when the lay pitch is bigger, and cord torsional deflection degree of monofilament in twisting is got over Small, its elastic restoring force is larger, if this elastic restoring force cannot eliminate, can decline the fatigue performance of cord, make Use the lost of life；The lay pitch is small, and the fatigue performance of steel cord improves, and elongation is high, but the spinning loss of intensity is big, productivity ratio Reduce.So it is steel cord research and development to carry out rational lay pitch design according to the all-steel cord of varying strength and different steel wire diameters During important performance characteristic.In addition, arrangement of the steel cord in twisting is the section of internal layer cord and outer layer cord Shape has important influence, and important Consideration for its strike-through performance.At one of the present utility model preferably Embodiment in, it be 5.0mm that three cored wire steel wires, which compile the lay pitch twisted with the fingers, and the lay pitch that seven cover wires compile sth. made by twisting is 12.0mm；Cored wire Section be in equilateral triangle, the section of steel cord is circle；Described cored wire steel wire and the tensile strength of cover wire are all higher than 3600MPa.In a preferred embodiment, it is that S is twisted with the fingers that described cored wire compiles the twist direction twisted with the fingers with cover wire.

Of the present utility model ten strands of all-steel cords, all steel wires use the steel wire of superhigh intensity, such as, tensile strength is equal More than 3600MPa, outer layer uses seven steel wires, and its diameter is less than institute in traditional 3+6 shaped steel silk cord and 3+7 shaped steel silk cords The steel wire diameter used, it is advantageously implemented the lightweight of tire；Ensure that tire reaches corresponding bearing capacity simultaneously.Seven steel wires The cored wire of centre is not exclusively wrapped up, more gaps is left, is easy to the infiltration of rubber, is advantageous to improve rubber and all-steel cord Between bonding force.

The utility model is used according to newest《Radial steel cord》National standard (GB/T_11181-2016) Defined extra-high strength wire, the intensity of steel wire than the regular tenacity of same diameter improve 20% or so；Steel wire diameter is small, cord Bend loading, pliability and fatigue performance also accordingly improve；Twist direction is identical between steel wire, is linear contact lay, and contact area is big, Contact is small, can effectively reduce the abrasion between steel wire.This structure can be reduced in the case where ensureing carcass intensity The thickness of cord, manufactured tire weight is light, and heat is low, and oil consumption is few, saves the resources of production and production cost.

The utility model is not limited to described embodiment, those skilled in the art do not depart from it is of the present utility model In the i.e. open scope of spirit, it can still make some amendments or change, therefore rights protection scope of the present utility model is with claims The scope of restriction is defined.

Claims

1. a kind of 10 bursts of steel cords of improved (3+7) structure, it is characterised in that described steel cord includes the three of superhigh intensity The a diameter of 0.175mm of root cored wire steel wire and seven a diameter of 0.20mm are evenly spaced in the cover wire around cored wire, outer layer Steel wire is made to compile in the same direction with cored wire steel wire to be twisted with the fingers, and it is 5.0mm that three cored wire steel wires, which compile the lay pitch twisted with the fingers, and seven cover wires compile the lay pitch twisted with the fingers For 12.0mm；The section of cored wire is in equilateral triangle, and the section of steel cord is circle.

A kind of 2. 10 bursts of steel cords of improved (3+7) structure as claimed in claim 1, it is characterised in that described cored wire It is that S is twisted with the fingers to compile the twist direction twisted with the fingers with cover wire.