Tightly arranged steel cord
By setting the fixing device and twisting direction of the inner nylon cord and core wire in the steel cord, the problem of sliding and disengagement between the core wire and the outer surface wire in the prior art is solved, and the strength and use of the steel cord are improved. Lifespan and ensure compliance with the glue coating rate.
Patent Information
- Application Number
- CN202420819522.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The existing steel cord core wire and outer surface wire are easy to slide, resulting in reduced strength and disengagement, and cannot be used normally.
The design of tightly arranged steel cords is adopted, in which the inner layer is wrapped around the core wire by five glue-soaked nylon cords, and fixing devices such as slots and blocks are provided on the surface of the inner layer to increase friction, and the outer layer is Thirteen nylon cords are wound and used in opposite twist directions to enhance friction.
Through the enhanced friction, the sliding and disengagement of the core wire and the inner nylon cord are avoided, the strength and service life of the composite steel cord are improved, and the glue coating rate is ensured to meet the standards.
Smart Images
Figure CN222275078U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel cords, in particular to a closely arranged steel cord. Background Art
[0002] In recent years, with the rapid development of the automobile industry, people's requirements for tire safety, high speed, energy saving, durability and other performance have been continuously improved. Steel cord is widely used in the belt layer of passenger radial tires and load-carrying radial tires.
[0003] In the prior art, the steel cord is composed of a core wire and an outer layer wire. The core wire and the outer layer wire are prone to slippage, and even the core wire and the outer layer wire are separated, which reduces the strength of the steel cord and makes the steel cord unable to be used normally. Utility Model Content
[0004] The utility model provides a closely arranged steel cord in order to solve the shortcomings in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a closely arranged steel cord, comprising a core wire, the arc surface of the core wire is provided with an inner layer, the inner layer is made of five rubber-dipped nylon cords and wound on the core wire, the arc surface of the inner layer is provided with an outer layer, the outer layer is made of thirteen rubber-dipped nylon cords and wound on the inner layer, the surface of the inner layer is provided with a fixing device, the fixing device comprises a plurality of slots, and the plurality of slots are opened on the arc surface of the five nylon cords of the inner layer.
[0006] The effects achieved by the above components are as follows: when the steel cord is manufactured, a number of grooves are opened on the surface of the five nylon cords in the inner layer, which increases the roughness between the inner nylon cords and the core wire, thereby increasing the friction between the inner nylon cords and the core wire. The friction between the inner nylon cords and the core wire is increased by the fixing device, avoiding sliding of the core wire and the five nylon cords in the inner layer, thereby causing the core wire and the five nylon cords in the inner layer to separate, thereby improving the strength and service life of the composite steel cord.
[0007] Preferably, the card slots are arranged in a circular ring shape on the five nylon cords of the inner layer, and a plurality of the card slots are distributed linearly.
[0008] The effect achieved by the above components is that the grooves are arranged to facilitate the tire manufacturing process, and the rubber can fully penetrate into the steel wires through the grooves between the nylon cords, so that the rubber coverage of the cords meets the standards.
[0009] Preferably, both ends of the core wire are fixedly connected with blocks, and the size of the blocks is larger than the size of the core wire.
[0010] The effect achieved by the above components is: by setting the block, the maximum displacement of the nylon cord around the core wire is limited, the nylon cord is prevented from being separated from the core wire, and the stability of the connection between the core wire and the nylon cord is further improved.
[0011] Preferably, the nylon cords of the inner layer and the nylon cords of the outer layer are both made by twisting, and the twisting direction of the outer layer is opposite to that of the inner layer.
[0012] The effect achieved by the above components is that the nylon cords of the outer layer and the inner layer are twisted in opposite directions, which increases the friction between the outer layer and the inner layer and prevents the nylon cords of the outer layer and the nylon cords of the inner layer from sliding.
[0013] Preferably, a plurality of clamping blocks are evenly and fixedly connected to the arc surface of the core wire, and the plurality of clamping blocks are equally divided into five groups, and the five groups of clamping blocks are distributed in a circle.
[0014] The effect achieved by the above components is: by setting the block, the roughness of the core wire surface is increased, thereby increasing the friction between the core wire and the inner nylon cord, and improving the connectivity between the core wire and the inner nylon cord.
[0015] Preferably, the cross section of the card block is arc-shaped, and the size of the card block is matched with the size of the card slot.
[0016] The effect achieved by the above components is: the arc-shaped clamping block is inserted into the clamping groove of the inner nylon cord, thereby increasing the contact area between the clamping block and the clamping groove, thereby improving the stability between the core wire and the inner nylon cord.
[0017] In summary, the beneficial effects of the utility model are:
[0018] When the steel cord is manufactured, a number of grooves are opened on the surface of the five nylon cords in the inner layer to increase the roughness between the inner nylon cords and the core wire, thereby increasing the friction between the inner nylon cords and the core wire. The friction between the inner nylon cords and the core wire is increased by a fixing device to avoid sliding between the core wire and the five nylon cords in the inner layer, which would cause the core wire and the five nylon cords in the inner layer to separate, thereby improving the strength and service life of the composite steel cord. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the inner cord of the utility model;
[0021] Figure 3 It is a three-dimensional structural schematic diagram of the core wire of the utility model.
[0022] Legend: 1, core wire; 2, inner layer; 3, outer layer; 4, fixing device; 41, slot; 42, block; 43, stopper. DETAILED DESCRIPTION
[0023] Reference Figure 1-3 As shown, this embodiment discloses a tightly arranged steel cord, including a core wire 1, an inner layer 2 is provided on the arc surface of the core wire 1, the inner layer 2 is made of five rubber-dipped nylon cords and wound on the core wire 1, an outer layer 3 is provided on the arc surface of the inner layer 2, the outer layer 3 is made of thirteen rubber-dipped nylon cords and wound on the inner layer 2, and a fixing device 4 is provided on the surface of the inner layer 2.
[0024] Reference Figure 1-3 As shown, the fixing device 4 includes a plurality of slots 41, and the plurality of slots 41 are opened on the arc surface of the five nylon cords of the inner layer 2. When the steel cord is manufactured, the surface of the five nylon cords of the inner layer 2 is provided with a plurality of slots 41, which increases the roughness between the nylon cords of the inner layer 2 and the core wire 1, thereby increasing the friction between the nylon cords of the inner layer 2 and the core wire 1. The friction between the nylon cords of the inner layer 2 and the core wire 1 is increased by the fixing device 4, so as to avoid the core wire 1 and the five nylon cords of the inner layer 2 from sliding, thereby causing the core wire 1 and the five nylon cords of the inner layer 2 to separate, thereby improving the strength and service life of the composite steel cord.
[0025] Reference Figure 1-3 As shown, the grooves 41 are annularly provided on the five nylon cords of the inner layer 2, and a plurality of grooves 41 are linearly distributed. The grooves 41 are provided to facilitate the tire manufacturing process, and the rubber can fully penetrate between the steel wires through the grooves 41 between the nylon cords, so that the rubber coverage of the cords meets the standard.
[0026] Reference Figure 1-3 As shown, both ends of the core wire 1 are fixedly connected with a stopper 43, and the size of the stopper 43 is larger than the size of the core wire 1. By setting the stopper 43, the maximum displacement of the nylon cord around the core wire 1 is limited, so as to prevent the nylon cord from being separated from the core wire 1, and further improve the stability of the connection between the core wire 1 and the nylon cord. The nylon cord of the inner layer 2 and the nylon cord of the outer layer 3 are both made by twisting, and the twisting direction of the outer layer 3 is opposite to that of the inner layer 2. The nylon cords of the outer layer 3 and the inner layer 2 are twisted in opposite directions, which increases the friction between the outer layer 3 and the inner layer 2, and prevents the nylon cords of the outer layer 3 and the nylon cords of the inner layer 2 from sliding.
[0027] Reference Figure 1-3As shown, the arc surface of the core wire 1 is evenly fixedly connected with a plurality of blocks 42, and the plurality of blocks 42 are equally divided into five groups, and the five groups of blocks 42 are distributed in a circumference. By setting the blocks 42, the roughness of the surface of the core wire 1 is increased, thereby increasing the friction between the core wire 1 and the inner layer 2 nylon cord, and improving the connectivity between the core wire 1 and the inner layer 2 nylon cord. The cross section of the block 42 is arc-shaped, and the size of the block 42 is adapted to the size of the slot 41. By inserting the arc-shaped block 42 into the slot 41 of the inner layer 2 nylon cord, the contact area between the block 42 and the slot 41 is increased, thereby improving the stability between the core wire 1 and the inner layer 2 nylon cord.
[0028] Working principle: When the steel cord is manufactured, a number of grooves 41 are opened on the surface of the five nylon cords of the inner layer 2, and the arc-shaped block 42 of the core wire 1 is inserted into the groove 41 of the nylon cord of the inner layer 2, increasing the contact area between the block 42 and the groove 41, thereby improving the stability and friction between the core wire 1 and the nylon cord of the inner layer 2. At the same time, the groove 41 of the nylon cord facilitates the tire manufacturing process. The rubber can fully penetrate into the steel wires through the groove 41 between the nylon cords, so that the cord rubber coverage rate meets the standard, and the block 43 achieves the maximum displacement of the nylon cord around the core wire 1. The limiting effect can prevent the nylon cord from being separated from the core wire 1, and further improve the stability of the connection between the core wire 1 and the nylon cord. The nylon cords of the outer layer 3 and the inner layer 2 are twisted in opposite directions, which increases the friction between the outer layer 3 and the inner layer 2, and avoids the nylon cords of the outer layer 3 and the nylon cords of the inner layer 2 from sliding. The friction between the nylon cords of the inner layer 2 and the core wire 1 is increased by the fixing device 4, and the sliding of the five nylon cords of the core wire 1 and the inner layer 2 is avoided, which causes the core wire 1 to be separated from the five nylon cords of the inner layer 2, thereby improving the strength and service life of the composite steel cord.
Claims
1. A closely arranged steel cord comprising a core wire (1), characterized in that: The arc surface of the core wire (1) is provided with an inner layer (2), the inner layer (2) is made of five rubber-impregnated nylon cords and is wound around the core wire (1), the arc surface of the inner layer (2) is provided with an outer layer (3), the outer layer (3) is made of thirteen rubber-impregnated nylon cords and is wound around the inner layer (2), and a fixing device (4) is provided on the surface of the inner layer (2), the fixing device (4) comprises a plurality of slots (41), and the plurality of slots (41) are opened on the arc surface of the five nylon cords of the inner layer (2).
2. A closely arranged steel cord according to claim 1, characterized in that: The clamping groove (41) is provided in a circular ring shape on the five nylon cords of the inner layer (2), and a plurality of the clamping grooves (41) are distributed linearly.
3. A closely arranged steel cord according to claim 1, characterized in that: Stoppers (43) are fixedly connected to both ends of the core wire (1); the size of the stoppers (43) is larger than the size of the core wire (1).
4. A closely arranged steel cord according to claim 1, characterized in that: The nylon cords of the inner layer (2) and the nylon cords of the outer layer (3) are both made by twisting, and the twisting direction of the outer layer (3) is opposite to the twisting direction of the inner layer (2).
5. A closely arranged steel cord according to claim 1, characterized in that: A plurality of clamping blocks (42) are evenly and fixedly connected to the arc surface of the core wire (1); the plurality of clamping blocks (42) are equally divided into five groups; and the five groups of clamping blocks (42) are distributed in a circular pattern.
6. A closely arranged steel cord according to claim 5, characterized in that: The cross section of the clamping block (42) is in the shape of an arc, and the size of the clamping block (42) is matched to the size of the clamping slot (41).