CN209162496U - A kind of 12 strands of radial-ply tyre all-steel cords - Google Patents

Abstract

The utility model provides a kind of 12 strands of radial-ply tyre all-steel cords, by in equilateral triangle arrangement three core wire steel wires, eight evenly around around the core wire steel wire first layer steel wire and an outer wrapping compile and twist, the core wire gauge of wire is identical as the first layer gauge of wire, range is 0.175-0.40mm, steel wire diameter is small, and bend loading, flexibility and the fatigue performance of cord also correspondingly increase；Gap between two adjacent first layer steel wires is 0.035-0.08mm, is preferably arranged to 0.05mm, is conducive to the strike-through performance for improving all-steel cord, improves cord strength grade and rubber to the anchorage effect of core strand steel wire, saves resources of production, reduce production cost.

Description

A kind of 12 strands of radial-ply tyre all-steel cords

Technical field

The utility model relates to all-steel cord technical fields, and in particular to a kind of 12 strands of radial-ply tyre all-steel cords.

Background technique

The development of auto industry makes meridian, flattening, lightweight and the high speed of tire become developing direction from now on, The progress of radial manufacturing technology and influence on development the development of the physical property of all-steel cord, structure and manufacturing technology. Common radial all-steel cord twirl compiled by three steel wires of core strand, nine steel wires of first layer and an outer wrapping and At three steel wires of core strand and nine steel wire diameters of first layer are identical, and relatively close, gap between each layer is arranged between ectonexine Smaller, rubber cannot effectively penetrate into core strand steel wire.And the structure and its intensity of all-steel cord, bending stiffness and and rubber Bond properties have direct influence to tire, by all-steel cord controlling of production process can not make up completely due to knot Structure designs unreasonable and existing defect.

Utility model content

The purpose of this utility model is to provide a kind of 12 strands of radial-ply tyre all-steel cords, by changing radial With the structure of all-steel cord, the strike-through performance of radial all-steel cord is promoted, improves cord strength grade and rubber pair The anchorage effect of core strand steel wire.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of 12 strands of radial-ply tyre all-steel cords, the all-steel cord is by core strand, first layer strand and an outer wrapping Volume is twisted, and the section of the all-steel cord is circle, and the core strand includes three core wire steel wires in equilateral triangle arrangement, institute Stating first layer strand includes eight evenly around the first layer steel wire around the core strand, the core wire gauge of wire and institute It is identical to state first layer gauge of wire, range 0.175-0.40mm, the gap between two adjacent first layer steel wires is 0.035-0.08mm。

Preferably, the core wire steel wire and the first layer gauge of wire are 0.22mm.

Preferably, the gap between two adjacent first layer steel wires is 0.05mm.

Preferably, the diameter of the outer wrapping is 0.15mm.

Preferably, the core wire steel wire is identical as the orientation of the first layer steel wire, is that S is twisted.

Preferably, the orientation of the orientation of the outer wrapping and the core wire steel wire, the first layer steel wire for Z on the contrary, twist.

Preferably, it is 10.0-22.0m that the first layer steel wire, which compiles the range of lay twisted,.

Preferably, it is 0.5 times that the first layer steel wire compiles the lay pitch twisted that the core wire steel wire, which compiles the lay pitch twisted,.

Preferably, it is 3.5-5.0mm that the outer wrapping, which compiles the range of lay twisted,.

Preferably, the strength grade of the core wire steel wire and the first layer steel wire is NT, HT, ST or UT.

Compared with prior art, the utility model provides a kind of 12 strands of radial-ply tyre all-steel cords, by being in equilateral triangle Arrangement three core wire steel wires, evenly around around core wire steel wire eight first layer steel wires and an outermost outer wrapping Volume is twisted, and core wire gauge of wire is identical as first layer gauge of wire, gap between adjacent two first layer steel wires 0.035-0.08mm is convenient for rubber osmosis, and the flowing of rubber provides channel when being tyre vulcanization, anchoring of the increase rubber to core strand Effect, makes to be sufficient filling with and wrap up rubber between each layer steel wire, reduces the air content between each layer steel wire of carcass cord, prevents Tire use process because cord strength not enough, steel wire wear due to cause cord bearing capacity fail, wheel can be improved The bonding retentivity and endurance of tire, anticorrosive and shock resistance comprehensive performance, improve the service life of tire.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of 12 strands of radial-ply tyre all-steel cords of one kind of an embodiment of the utility model.

Specific embodiment

To make to have further understanding to the purpose of this utility model, construction, feature and its function, hereby cooperate embodiment Detailed description are as follows.

Referring to Figure 1, Fig. 1 is the structure of 12 strands of radial-ply tyre all-steel cords of one kind of an embodiment of the utility model Schematic diagram.12 strands of radial-ply tyre all-steel cords of one kind of an embodiment of the present invention are by core strand 10,20 and of first layer strand A piece outer volume of wrapping 30 is twisted, and the section of the all-steel cord is circle, and core strand 10 includes three cores in equilateral triangle arrangement Line steel wire 11, first layer strand 20 include eight evenly around the first layer steel wire 21 around core strand 10, core wire steel wire 11 Diameter is identical as the diameter of first layer steel wire 21, range 0.175-0.40mm, between two adjacent first layer steel wires 21 Gap L is 0.035-0.08mm.Preferably, the gap L between two adjacent first layer steel wires 21 is 0.05mm.First layer steel Gap 0.05mm is convenient for rubber osmosis between silk 21, and rubber flowing provides channel when being tyre vulcanization, and increase rubber is to core strand Anchorage effect makes to be sufficient filling with and wrap up rubber between each layer steel wire, reduces the air between each layer steel wire of tire all-steel cord Content, avoid during tire used because all-steel cord intensity not enough, steel wire wear due to cause cord bearing capacity to fail, can The bonding retentivity and endurance, anticorrosive and shock resistance comprehensive performance for improving tire, improve the service life of tire. In the case where guaranteeing that tire intensity is met the requirements, the weight of cord can be reduced, manufactured tire weight is light, and heat is low, consumption Oil is few, saves resources of production and production cost.

As the preferred embodiment of the utility model, the diameter of core wire steel wire 11 and first layer steel wire 21 is 0.22mm.Core Line steel wire 11 and the diameter of first layer steel wire 21 are smaller, and the bend loading of all-steel cord, flexibility and fatigue performance are also corresponding It improves.

As the preferred embodiment of the utility model, the diameter of outer wrapping 30 is 0.15mm.

As the preferred embodiment of the utility model, core wire steel wire 11 is identical as the orientation of first layer steel wire 21, is S It twists.

As the preferred embodiment of the utility model, the orientation of outer wrapping 30 and core wire steel wire 11, first layer steel wire 21 Orientation for Z on the contrary, twist.

As the preferred embodiment of the utility model, it is 10.0-22.0m that first layer steel wire 21, which compiles the range of lay twisted,.More Preferably, it is 14.0mm that first layer steel wire 21, which compiles the lay pitch twisted,.

As the preferred embodiment of the utility model, it is that first layer steel wire 21 compiles the twirl twisted that core wire steel wire 11, which compiles the lay pitch twisted, Away from 0.5 times.It is highly preferred that it is 7.0mm that core wire steel wire 11, which compiles the lay pitch twisted,.

As the preferred embodiment of the utility model, it is 3.5-5.0mm that outer wrapping 30, which compiles the range of lay twisted,.More preferably Ground, the lay pitch of outer wrapping are 3.5mm.

As the preferred embodiment of the utility model, the strength grade of core wire steel wire 11 and first layer steel wire 21 be NT, HT, ST or UT.In the different embodiments of the utility model, core wire steel wire 11, first layer steel wire 21 use the steel of different intensity grades Silk carries out volume twirl, plates copper wire tensile strength by improving, and reduces the wet total passage of drawing, it is strong to improve monofilament to increase partial shrinkage rate Degree, to improve the intensity of the tire of production.

Table 1 is referred to, table 1 is one kind of common 3+9+1 structure high tensile steel wire cord and an embodiment of the present invention The performance parameter contrast table of 12 strands of radial-ply tyre all-steel cords:

1 performance parameter contrast table of table

As it can be seen from table 1 12 strands of radial-ply tyres of one kind of an embodiment of the present invention with all-steel cord using 3+8 × 0.22ST+0.15 structure, cord diameter 1.14mm, core wire steel wire 11 and 21 orientation of first layer steel wire are S twirl, outer 30 orientation of wrapping For Z twirl, it is 7.0mm that core wire steel wire 11, which compiles the lay pitch twisted, and it is 14.0mm that first layer steel wire 21, which compiles the lay pitch twisted, and the disconnected broken power of minimum is 1390N, line density 3.46g/m, bonding force 850N/25mm, rubber osmosis rate reach 90%, with common 3+9 × 0.22HT The all-steel cord of+0.15 structure is compared, and line density reduces, and minimum Fracture Force, bonding force, rubber osmosis rate are all improved, rubber Permeability improves 15%, and tire materials cost reduces 10%.The utility model effectively increases the strike-through performance of all-steel cord, section About resources of production reduce production cost.

In production, 12 strands of radial-ply tyres of one kind of an embodiment of the present invention are with all-steel cord by reducing first layer steel The radical of silk 21 twists inlet first and increases monofilament deformation device, make first layer steel wire 21 using interior receipts strander type is put outside The first layer strand 20 of fully deformed to all-steel cord arranges uniformly, and Residual torsion poker characteristic more tends to unanimously, the structure and 3 The all-steel cord diameter of+9 × 0.22HT+0.15 structure is identical, and intensity is equivalent, when making with isodensity tyre cord, under cost Drop 10%.

The structure and its intensity of all-steel cord, bending stiffness and there is direct shadow to tire with the bond properties of rubber It rings, existing defect and can not be made up completely due to unreasonable structural design to all-steel cord controlling of production process.Cause This, structure of the utility model by change all-steel cord, the steel wire radical of reduction first layer strand 20, adjacent two first Gap L between layer steel wire 21 is preferably arranged to 0.05mm, can effectively promote the strike-through of radial all-steel cord Can, cord strength grade and rubber are improved to the anchorage effect of core strand steel wire, prevent tire in use because of all-steel cord With the adhesion failure of rubber and there is accident, the manufacturing cost of all-steel cord can also be reduced, save resources of production.

The utility model is described by above-mentioned related embodiment, however above-described embodiment is only to implement the utility model Example.It must be noted that the embodiment disclosed is not limiting as the scope of the utility model.On the contrary, not departing from this It is changed and retouched made by the spirit and scope of utility model, belongs to the scope of patent protection of the utility model.

Claims (10)

1. a kind of 12 strands of radial-ply tyre all-steel cords, which is characterized in that the all-steel cord is by core strand, first layer strand and one The outer wrapping volume of root is twisted, and the section of the all-steel cord is circle, and the core strand includes three cores in equilateral triangle arrangement Line steel wire, the first layer strand include eight evenly around the first layer steel wire around the core strand, the core wire steel wire Diameter it is identical as the first layer gauge of wire, range 0.175-0.40mm, between two adjacent first layer steel wires Gap be 0.035-0.08mm.

2. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the core wire steel wire and described the The diameter of layer of steel wire is 0.22mm.

3. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that two adjacent first layer steel wires Between gap be 0.05mm.

4. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the diameter of the outer wrapping is 0.15mm。

5. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the core wire steel wire and described the The orientation of layer of steel wire is identical, is that S is twisted.

6. 12 strands of radial-ply tyre all-steel cords as claimed in claim 5, which is characterized in that the orientation of the outer wrapping and institute The orientation of core wire steel wire, the first layer steel wire is stated on the contrary, twisting for Z.

7. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the first layer steel wire compiles twirl Range of lay is 10.0-22.0m.

8. 12 strands of radial-ply tyre all-steel cords as claimed in claim 7, which is characterized in that the core wire steel wire compiles the twirl twisted Away from 0.5 times for compiling the lay pitch twisted for the first layer steel wire.

9. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the outer wrapping compiles the lay pitch twisted Range is 3.5-5.0mm.

10. 12 strands of radial-ply tyre all-steel cords as described in claim 1, which is characterized in that the core wire steel wire and described The strength grade of first layer steel wire is NT, HT, ST or UT.