CN211571180U

CN211571180U - 1+5 structural steel cord

Info

Publication number: CN211571180U
Application number: CN201921553236.2U
Authority: CN
Inventors: 张正裕; 赵年鹏; 段鸿宾; 赵存军; 王小军; 刘湘慧
Original assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Current assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-09-25
Anticipated expiration: 2029-09-18

Abstract

The utility model provides a less 1+5 structure steel cord of internal stress, the less 1+5 structure steel cord of its characterized in that internal stress is once compiled with first lay length to and first lay length and is twisted with the fingers and form by a heart yearn monofilament that has walked away from the stress relief device and five root line surface silk monofilaments that have walked away from the stress relief device, and the monofilament intensity level of heart yearn is higher than the monofilament intensity level of five root line surfaces, has the clearance of the same width between every two adjacent root line surface silk monofilaments. The strength grade of the core wire monofilament is ultrahigh strength grade, and the strength grade of the five surface wire monofilaments is high strength grade. The utility model discloses well heart yearn monofilament intensity level is higher than five root line monofilament intensity levels, has further reduced steel cord's internal stress, and the curtain cloth can not take place to encircle the limit when tailorring, has improved steel cord's production quality.

Description

1+5 structural steel cord

Technical Field

The utility model relates to a steel cord technical field especially relates to a less 1+5 structure steel cord of internal stress.

Background

The steel cord has a plurality of excellent performances such as high strength, good wear resistance, fast heat dissipation, good elasticity and the like, and is widely applied to the production of radial tires, thereby becoming an important framework material of the radial tires. With the rapid development of the automobile industry, people have higher and higher performance requirements on automobile tires, a belt ply is a main stressed component of a radial tire, and the belt ply periodically bears deformation stress such as stretching, bending, shearing and the like. The belt layer plays an important role in safety, comfort and durability of the tire, and although these properties are related to the cut angle and width of the belt layer, these properties are more closely related to the steel cords in the belt layer. The steel cord for the belted layer can be helpful to improve the corrosion resistance and fatigue resistance of the belted layer only if the steel cord has higher glue penetration performance, and further improves the quality of the tire.

The 1+5 structural steel cord has a relatively simple structure, is usually used in a heavy-duty radial tire belt ply, five surface thread monofilaments are twisted and formed around one core wire monofilament at a time, and the five surface thread monofilaments and the core wire monofilaments have the same strength grade, are stable in structure and have good performance. However, in the twisting process of the steel cord with the structure, the internal stress of each monofilament is large, so that the cord fabric produced by a tire factory is arched when being cut, the automatic splicing of the cord fabric is influenced, waste materials are easily generated, and waste is caused.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a less 1+5 structure steel cord of internal stress, the purpose is the great problem of internal stress of each monofilament in solving 1+5 structure steel cord.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model relates to a less 1+5 structure steel cord of internal stress, the less 1+5 structure steel cord of internal stress is once compiled with first lay length to and first lay length and is twisted with the fingers and form by a heart yearn monofilament of walking away from the stress relief device and five root line facial features monofilaments of walking away from the stress relief device, the strength grade of heart yearn monofilament is higher than the strength grade of five root line facial features monofilament has the clearance of the same width between per two adjacent facial features monofilament.

Preferably, the strength grade of the core wire monofilament is an ultrahigh strength grade, and the strength grade of the five surface wire monofilaments is a high strength grade.

Preferably, there is no gap between each face yarn monofilament and the core yarn monofilament.

Preferably, the core wire monofilament has the same diameter as the five face wire monofilaments.

Preferably, the first twisting direction is a Z twisting direction.

Compared with the prior art, the utility model discloses a each monofilament in the less 1+5 structure steel cord of internal stress all walks away from the stress relief device before twisting, has effectively reduced the residual torsional stress of each monofilament to the internal stress of steel cord has been reduced. And the strength grade of the core wire monofilament is higher than that of the five surface wire monofilaments, so that the internal stress of the steel cord is further reduced, the arching of the cord fabric is avoided during cutting, and the production quality of the steel cord is improved.

Drawings

Fig. 1 is an overall schematic view of a 1+5 structural steel cord with small internal stress according to an embodiment of the present invention;

fig. 2 is a schematic view of a stress relieving apparatus according to an embodiment of the present invention;

in the figure: 1-core wire monofilament; 2-face thread monofilament; 3-a bottom plate; 4-fixing the bearing set; 5-movable bearing group; 6-strip-shaped groove.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1, fig. 1 is an overall schematic view of a 1+5 structural steel cord with small internal stress according to an embodiment of the present invention. The utility model discloses a less 1+5 structural steel cord of internal stress is once compiled with first lay length and is twisted with fingers and form by a heart yearn monofilament 1 that has walked away from the stress relief device and five root face silk monofilaments 2 that have walked away from the stress relief device.

The strength grade of the core wire monofilament 1 is higher than that of the five surface wire monofilaments 2, and a gap with the same width is formed between every two adjacent surface wire monofilaments 2, so that tire rubber can uniformly permeate into the steel cord, and the structure of the steel cord is stable.

Preferably, the strength grade of the core wire monofilament 1 is an ultra-high strength grade, and the strength grade of the five face wire monofilaments 2 is a high strength grade. Since the core wire monofilament 1 with high strength does not rotate in the twisting process, the five surface wire monofilaments 2 with low strength are more easily wound on the periphery of the core wire monofilament 1, so that the internal stress of the steel cord is low.

Preferably, there is no gap between each face yarn monofilament 2 and the core yarn monofilament 1. Because the utility model discloses a steel cord is only two-layer, so only need guarantee between two adjacent facial line monofilaments 2 gappedly can guarantee the infiltration nature of steel cord, do not have the clearance between every facial line monofilament 2 and the heart yearn monofilament 1 and can make the volume of whole steel cord littleer, more frivolous, saved the space.

Preferably, the core filament 1 and the five face wire filaments 2 may have the same diameter, which may facilitate mass production of the filaments.

In a specific embodiment, the first twisting direction is a Z twisting direction, and the steel cord produced according to the specification has smaller internal stress, stable structure and difficult deformation, and does not generate arching when the cord fabric is cut.

Referring to fig. 2, fig. 2 is a schematic view of a stress relief device according to an embodiment of the present invention. Preferably, the stress relief means through which each filament passes before twisting the steel cord may comprise a base plate 3, a set of fixed bearings 4 arranged along a straight line in the base plate 3, and a set of movable bearings 5 arranged on a parallel line below the set of fixed bearings 4 and staggered with respect to the set of fixed bearings 4. Each bearing in the fixed bearing group 4 and the movable bearing group 5 can rotate around the corresponding central shaft, and the surface of each bearing is provided with a V-shaped groove, and the width of the groove is 1.4 mm. Have the bar groove 6 that is used for installing movable bearing group 5 on bottom plate 3, movable bearing group 5 links to each other with bottom plate 3 through installing in the slider of bar groove 6 inside, and 6 below in every bar groove all are equipped with the adjusting screw, and each adjusting screw is connected rather than the movable bearing detachably who corresponds respectively, can make the slider remove in bar groove 6 insides through rotatory adjusting screw. In practical application, the monofilament can pass through the V-shaped grooves of the fixed bearing set 4 and the movable bearing set 5, and drive the bearings in the fixed bearing set 4 to rotate, and drive the bearings in the movable bearing set 5 to rotate and slide. The stress relieving device with the structure can not only straighten the monofilament, but also effectively eliminate the residual torsional stress in the monofilament, and lay a good foundation for the twisting of the monofilament.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims

1. A1 +5 structural steel cord is characterized in that the 1+5 structural steel cord is formed by one core wire monofilament running through a stress relieving device and five surface wire monofilaments running through the stress relieving device through one-time weaving and twisting in a first twisting direction and a first twisting distance, the strength grade of the core wire monofilament is higher than that of the five surface wire monofilaments, and gaps with the same width are formed between every two adjacent surface wire monofilaments.

2. A 1+5 structural steel cord as claimed in claim 1, characterized in that said core filaments have a strength grade of ultra high strength and said five face filaments have a strength grade of high strength.

3. A 1+5 structural steel cord as claimed in claim 1, characterized in that each face wire monofilament has no gap from said core wire monofilament.

4. A 1+5 structural steel cord as claimed in claim 1, characterized in that said core filaments and said five face filaments have the same diameter.

5. A 1+5 structural steel cord as claimed in claim 1, characterized in that said first twisting direction is a Z twisting direction.