High strength tire cord

Abstract

The application belongs to the technical field of steel cord, and particularly relates to a high-strength steel cord for tires, which comprises a tire steel cord body, the tire steel cord body is composed of an outer layer, an intermediate layer and an inner layer, the main body of the intermediate layer is an intermediate core strand, the main body of the inner layer is an internal single core wire, five groups of the intermediate core strands are uniformly distributed and fixedly installed in the inner part of the outer layer. In the utility model, a wire end connector and an outer sheath are arranged at the end of the tire steel cord, on the one hand, the wire end connector and the outer sheath can avoid the loosening of the wire end and cause uneven strength distribution, on the other hand, the wire end connector and the outer sheath can effectively reduce the abrasion of the steel cord, prolong the service life, and the cooling pipe is arranged in the outer sheath, so that the temperature can be reduced during use, the temperature resistance of the tire can be continuously exerted, the rough layer is arranged on the periphery of the internal single core wire, so that the contact area with the adhesive layer is increased, then the internal single core wire and the steel wire body are more closely connected, and the connection is seamless, so that the connection strength is enhanced.

Description

Technical Field

[0001] This utility model relates to a steel cord, specifically a high-strength steel cord for tires. Background Technology

[0002] With the rapid development of the automotive industry, the demand for radial tires is constantly increasing, which puts forward higher requirements for the performance and quality of steel cords. In particular, the corrosion resistance of steel cords used in radial tires is related to the service life of the entire tire, which has attracted people's attention.

[0003] In radial tires, the steel cords are encased within rubber. The distance between each steel wire within the cord determines the amount of rubber inside, which is the most important parameter affecting corrosion resistance. Currently, steel cords in radial tires are mostly stranded in the same direction, resulting in a smaller distance between each steel wire and cord. This is not conducive to rubber encapsulation, leading to poor corrosion resistance. During heavy-duty tire use or driving, the cords are subjected to extremely heavy loads, causing damage and corrosion to the cords, and resulting in wear and tear on the tire tread, thus affecting service life.

[0004] Therefore, a high-strength steel cord for tires is needed to meet market demand. Utility Model Content

[0005] The main objective of this disclosure is to provide a high-strength steel cord for tires, which effectively solves the problems raised by the inventors in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A high-strength steel cord for tires includes a tire steel cord body, which is composed of three parts: an outer layer, a middle layer, and an inner layer. The middle layer is mainly composed of a core strand, and the inner layer is mainly composed of an inner single core filament. Five sets of the core strands are evenly distributed and fixedly installed inside the outer layer, i.e., four sets of core strands are arranged in a ring array, and the other set is located at the center of the four sets of core strands. The inner single core filament is fixedly installed at the center of the core strand. Eight steel wire bodies arranged in a ring array around the inner single core filament are fixedly installed inside the core strand. A wire end connector is fixedly installed at the end of the tire steel cord body.

[0008] Preferably, an outer sheath is fixedly installed on the wire end connector, and the tire steel cord body passes through the outer sheath.

[0009] Preferably, the outer sheath is inlaid with a plurality of evenly distributed cooling pipes, and the ends of the cooling pipes do not extend out of the outer sheath.

[0010] Preferably, the outer sheath has streamlined grooves arranged in a ring array on its outer side.

[0011] Preferably, the internal single core wire is fixedly connected to the steel wire body by an adhesive layer, that is, the adhesive layer fills the internal gap of the intermediate core strand.

[0012] Preferably, the gaps between the five sets of intermediate core strands are filled with a wear-resistant filler layer, that is, the wear-resistant filler layer is connected to the interior of the outer layer and surrounds the intermediate core strands.

[0013] Preferably, the outer surface of the inner single-core filament is covered with a rough layer, and the rough layer is connected to the adhesive layer.

[0014] In view of this, compared with the prior art, the beneficial effects of this utility model are:

[0015] (i) In this application, a wire end connector and an outer sheath are added to the end of the tire steel cord. On the one hand, this prevents the wire end from becoming loose and causing uneven strength distribution. On the other hand, it effectively reduces the wear of the steel cord and improves its service life. In addition, cooling pipes are added to the outer sheath so that the temperature can be reduced during use and the tire's temperature resistance can be maintained.

[0016] (ii) In this application, a rough layer is provided on the periphery of the inner single core wire to increase the contact area between it and the adhesive layer, thereby making the connection between the inner single core wire and the steel wire body more tight and seamless, so as to strengthen the connection strength. The wear-resistant filling layer is filled on the periphery of the middle core strand to reduce its wear. Attached Figure Description

[0017] Figure 1 The image shown is a three-dimensional structural view of the high-strength steel cord for tires provided by this utility model.

[0018] Figure 2 As shown Figure 1 A three-dimensional view of the structure after removing the wire terminal connectors;

[0019] Figure 3 The diagram shown is a schematic of the internal structure of the main body of the tire steel cord.

[0020] Figure 4 The diagram shown is a schematic representation of the internal structure of the central core strand.

[0021] icon:

[0022] 1-Tire steel cord body; 2-Intermediate core strand; 3-Inner single core wire; 4-Wire end connector; 5-Outer sheath; 6-Cooling pipe; 7-Streamlined groove; 8-Wear-resistant filling layer; 9-Adhesive layer; 10-Steel wire body; 11-Rough layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 The present invention provides the following embodiments:

[0025] A high-strength steel cord for tires includes a tire steel cord body 1, which is composed of an outer layer, a middle layer, and an inner layer. The middle layer is mainly composed of a core strand 2, and the inner layer is mainly composed of an inner single core filament 3. Five sets of core strands 2 are evenly distributed and fixedly installed inside the outer layer, that is, four sets of core strands 2 are arranged in a ring array, and the other set is located at the center of the four sets of core strands 2. The inner single core filament 3 is fixedly installed at the center of the core strands 2. Eight steel wire bodies 10 are fixedly installed inside the core strands 2, arranged in a ring array around the inner single core filament 3. A wire end connector 4 is fixedly installed at the end of the tire steel cord body 1.

[0026] Specifically, an outer sheath 5 is fixedly installed on the line end connector 4, the tire steel cord body 1 passes through the outer sheath 5, and several evenly distributed cooling pipes 6 are embedded inside the outer sheath 5, and the ends of the cooling pipes 6 do not extend out of the outer sheath 5. A streamlined groove 7 distributed in a ring array is opened on the outer side of the outer sheath 5.

[0027] Specifically, the inner single core wire 3 is fixedly connected to the steel wire body 10 by an adhesive layer 9, that is, the adhesive layer fills the internal gap of the middle core strand 2.

[0028] Specifically, the gaps between the five sets of intermediate core strands 2 are filled with a wear-resistant filler layer 8, that is, the wear-resistant filler layer 8 is connected to the inside of the outer layer and surrounds the intermediate core strands 2.

[0029] Specifically, the outer surface of the inner single-core wire 3 is covered with a rough layer 11, and the rough layer 11 is connected to the adhesive layer 9.

[0030] The specific implementation of this embodiment is as follows: a wire end connector 4 and an outer sheath 5 are added to the end of the tire steel cord body 1. On the one hand, this prevents the wire end from becoming loose and causing uneven strength distribution. On the other hand, it effectively reduces the wear of the steel cord and improves its service life. In addition, a cooling pipe 6 is added to the outer sheath 5 so that it can reduce the temperature during use and ensure that the tire's temperature resistance performance continues to be maintained.

[0031] A rough layer 11 is provided on the periphery of the inner single core wire 3 to increase the contact area between it and the adhesive layer 9, thereby making the connection between the inner single core wire 3 and the steel wire body 10 tighter and seamless, so as to strengthen the connection strength. The wear-resistant filling layer 8 is filled on the periphery of the middle core strand 2 to reduce its wear.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-strength steel cord for tires, characterized in that: The tire steel cord body (1) consists of three parts: an outer layer, a middle layer and an inner layer. The middle layer is composed of a core strand (2), and the inner layer is composed of an inner single core filament (3). Five sets of core strands (2) are evenly distributed and fixedly installed inside the outer layer. That is, four sets of core strands (2) are arranged in a ring array, and another set is located at the center of the four sets of core strands (2). The inner single core filament (3) is fixedly installed at the center of the core strand (2). Eight steel wire bodies (10) arranged in a ring array around the inner single core filament (3) are fixedly installed inside the core strand (2). The end of the tire steel cord body (1) is fixedly installed with a wire end connector (4).

2. The high-strength steel cord for tires according to claim 1, characterized in that: An outer sheath (5) is fixedly installed on the line end connector (4), and the tire steel cord body (1) passes through the outer sheath (5).

3. The high-strength steel cord for tires according to claim 2, characterized in that: The outer sheath (5) is inlaid with several evenly distributed cooling pipes (6), and the ends of the cooling pipes (6) do not extend out of the outer sheath (5).

4. The high-strength steel cord for tires according to claim 3, characterized in that: The outer sheath (5) has streamlined grooves (7) arranged in a ring array on its outer side.

5. The high-strength steel cord for tires according to claim 1, characterized in that: The internal single core wire (3) is fixedly connected to the steel wire body (10) by an adhesive layer (9), that is, the adhesive layer fills the internal gap of the middle core strand (2).

6. The high-strength steel cord for tires according to claim 5, characterized in that: The gaps between the five sets of intermediate core strands (2) are filled with a wear-resistant filler layer (8), that is, the wear-resistant filler layer (8) is connected to the interior of the outer layer and surrounds the intermediate core strands (2).

7. A high-strength steel cord for tires according to claim 6, characterized in that: The outer surface of the inner single core wire (3) is covered with a rough layer (11), and the rough layer (11) is connected to the adhesive layer (9).

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