Tire with low-heat-generation four-rubber tread

Abstract

The utility model discloses a tire with a low-heat-generation four-rubber tread, which belongs to the technical field of tread structures and comprises a first crown rubber area, a second crown rubber area, a wing rubber area and a base rubber area which are sequentially arranged from outside to inside to form a tread layer. The wing rubber areas are arranged on the two transverse sides of the base rubber, the first tire crown rubber area and the second tire crown rubber area are each of a structure with the two sides higher than the middle, and the base rubber area is of a plane structure. According to the tire with the low-heat-generation four-rubber tread, rolling resistance and control are controlled through the first tread rubber area combination mode and the second tread rubber area combination mode, low rolling resistance and high wet grabbing can be provided after vulcanization, the upper wing rubber area and the base layer rubber area are matched, the four-rubber tread adopts a four-composite technology, rolling resistance is reduced, heat generation is reduced, and the service life of the tire is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of tread structure technology, and mainly to a tire with a low heat generation four-rubber tread. Background Technology

[0002] The domestic tire industry is developing rapidly, and the requirements for tire use are also high. Most domestic manufacturers use Pirelli's production technology, which is more suitable for my country's usage conditions, but it also has major quality problems such as poor wear resistance and cracks in the bead area.

[0003] For mining tires, high load capacity is an essential performance requirement. However, besides tire strength, the main limiting factors determining tire lifespan are the tire's cut resistance and heat generation performance. Mining tires differ from conventional tires; their operating environment is extremely harsh, making them highly susceptible to punctures, cuts, and other cutting problems that can lead to damage and failure. Furthermore, the high heat generated under heavy loads, and heat-induced delamination, are also major causes of reduced tire lifespan.

[0004] Therefore, providing a tire with a low heat generation four-rubber tread has become a key focus of tire research at this stage. Utility Model Content

[0005] This invention aims to solve the problem of low tire lifespan in existing technologies. Therefore, the purpose of this invention is to propose a low-heat-generating four-rubber tread, which uses a four-rubber, four-composite pressing method to reduce heat generation in the tread area, lower costs, reduce the occurrence of crown voids or shoulder voids in the tire tread area, delay aging, and extend service life.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A tire with a low heat generation four-rubber tread includes a first crown rubber area, a second crown rubber area, a wing rubber area, and a base rubber area. The first crown rubber area, the second crown rubber area, and the base rubber area are arranged sequentially from the outside to the inside to form a tread layer. The wing rubber areas are arranged on both sides of the base rubber. The first crown rubber area and the second crown rubber area are both high on both sides and low in the middle. The base rubber area is a planar structure.

[0008] Preferably, the bottom sides of the second tread rubber area are recessed outward to form a first recessed portion, and the top of the wing rubber area is protruded outward to form a first protruding portion. The first protruding portion and the first recessed portion fit and adapt to each other.

[0009] Preferably, the top of the wing rubber area is completely covered by the second tire crown rubber.

[0010] Preferably, the top side of the wing rubber area extends outward and is partially wrapped by the second tire crown rubber.

[0011] Preferably, the first crown rubber area accounts for 45%-55% of the tread layer thickness, the second crown rubber area accounts for 35%-40% of the tread layer thickness, and the base rubber area accounts for 10%-15% of the tread layer thickness.

[0012] Preferably, the first crown rubber area accounts for 45%-55% of the tread layer thickness, the second crown rubber area accounts for 30%-35% of the tread layer thickness, and the base rubber area accounts for 15%-20% of the tread layer thickness.

[0013] Preferably, the first crown rubber area, the second crown rubber area, the wing rubber area, and the base rubber area are arranged sequentially from the outside to the inside to form the tread layer, and the first crown rubber area, the second crown rubber area, the wing rubber area, and the base rubber area all have a structure that is high on both sides and low in the middle.

[0014] Preferably, the bottom sides of the wing adhesive area are recessed outward to form a second recessed portion, and the top of the base adhesive area is protruded outward to form a second protruding portion. The second protruding portion and the second recessed portion fit and adapt to each other.

[0015] Preferably, the top of both sides of the base adhesive area is completely covered by the wing adhesive area.

[0016] Preferably, the first crown rubber area accounts for 30%-35% of the tread layer thickness, the second crown rubber area accounts for 30%-35% of the tread layer thickness, the wing rubber area accounts for 15%-20% of the tread layer thickness, and the base rubber area accounts for 10%-15% of the tread layer thickness.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This low-heat-generating four-rubber tread tire controls rolling resistance and handling through two different combinations of first and second tread rubber zones. After vulcanization, it can provide low rolling resistance and high wet grip. Combined with the upper wing rubber zone and the base rubber zone, the four-rubber tread adopts a four-composite process to reduce rolling resistance, reduce heat generation, and extend tire service life.

[0019] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of this utility model.

[0023] Reference numerals: 1-First crown rubber area, 2-Second crown rubber area, 3-Wing rubber area, 4-Base rubber area, 5-First recessed part, 6-First raised part, 7-Second recessed part, 8-Second raised part. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0026] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0027] Example 1:

[0028] Please refer to the following for details. Figure 1 A tire with a low heat generation four-rubber tread includes a first crown rubber area 1, a second crown rubber area 2, a wing rubber area 3, and a base rubber area 4. The first crown rubber area 1, the second crown rubber area 2, and the base rubber area 4 are arranged sequentially from the outside to the inside to form the tread layer. The wing rubber area 3 is arranged on both sides of the base rubber. The first crown rubber area 1 and the second crown rubber area 2 are both high on both sides and low in the middle. The base rubber area 4 is a planar structure.

[0029] The shoulder of this invention is designed as a slope and is thinned to reduce heat generation and energy loss in the tire shoulder area. It also reduces heat generation in the finished tire tread area and improves durability.

[0030] In this embodiment, the bottom sides of the second crown rubber area 2 are recessed outward to form the first recessed portion 5, and the top of the wing rubber area 3 is protruded outward to form the first protruding portion 6. The first protruding portion 6 and the first recessed portion 5 fit and adapt to each other.

[0031] In this embodiment, the top of the wing rubber area 3 is completely covered by the second tire crown rubber.

[0032] In this embodiment, the first crown rubber area 1 accounts for 50% of the tread layer thickness, the second crown rubber area 2 accounts for 37.5% of the tread layer thickness, and the base rubber area 4 accounts for 12.5% ​​of the tread layer thickness.

[0033] Example 2:

[0034] Please refer to the following for details. Figure 2 Compared with Example 1, the first crown rubber area 1 of the two examples has the same structure. The difference is that the top side of the wing rubber area 3 extends outward and is partially wrapped by the second crown rubber. The first crown rubber area 1 accounts for 50% of the tread layer thickness, the second crown rubber area 2 accounts for 31.25% of the tread layer thickness, and the base rubber area 4 accounts for 18.75% of the tread layer thickness.

[0035] Example 3:

[0036] Please refer to the following for details. Figure 3 The first crown rubber area 1, the second crown rubber area 2, the wing rubber area 3 and the base rubber area 4 are arranged from the outside to the inside to form the tread layer. The first crown rubber area 1, the second crown rubber area 2, the wing rubber area 3 and the base rubber area 4 are all high on both sides and low in the middle.

[0037] In this embodiment, the bottom of both sides of the wing adhesive area 3 is recessed outward to form a second recessed portion 7, and the top of the base adhesive area 4 is protruded outward to form a second protruding portion 8. The second protruding portion 8 and the second recessed portion 7 fit and adapt to each other.

[0038] In this embodiment, the top of both sides of the base adhesive area 4 is completely covered by the wing adhesive area 3.

[0039] In this embodiment, the first crown rubber area 1 accounts for 34.375% of the tread layer thickness, the second crown rubber area 2 accounts for 34.375% of the tread layer thickness, the wing rubber area 3 accounts for 18.75% of the tread layer thickness, and the base rubber area 4 accounts for 12.5% ​​of the tread layer thickness.

[0040] In this application, the first tire crown rubber area 1, the second tire crown rubber area 2, the wing rubber area 3, and the base rubber area 4 are all made of rubber composition. The first tire crown rubber area 1 and the second tire crown rubber area 2 play the roles of puncture resistance, abrasion resistance, and low rolling resistance, while the wing rubber area 3 and the base rubber area 4 play the roles of reducing heat generation and buffering.

[0041] In this application, the first crown rubber area 1 accounts for 50% of the tread layer thickness, which means that the middle horizontal part of the first crown rubber area 1 accounts for 50% of the thickness of the middle horizontal part of the tread layer. The second crown rubber area 2, wing rubber area 3 and base rubber area 4 are also calculated in this way.

[0042] A low-heat-generating four-rubber tread tire is disclosed, which is a four-rubber tread produced using a four-compound process. The first crown rubber area 1, the second crown rubber area 2, the wing rubber area 3, and the base rubber area 4 are each fed with rubber through their respective screw extruder inlets. After being extruded through their respective screw extruders and flow channels, they are pressed out through a pre-formed die and arranged into a pre-set shape. Finally, they are all pressed together through the extrusion die to form a four-compound tread. This four-rubber, four-compound tread production method improves thermal conductivity and wear resistance, solving the technical problem of reduced wear resistance while lowering the tread rubber's heat generation. It also ensures other properties required by the tread rubber during tire operation, extending the tire's service life.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tire having a low heat build-up four rubber tread, characterized in that, The first crown rubber area, the second crown rubber area, the wing rubber area and the base rubber area are sequentially arranged from outside to inside to form a tread layer, the wing rubber area is arranged on the lateral sides of the base rubber, the first crown rubber area and the second crown rubber area are both two-side high and middle low structures, and the base rubber area is a planar structure.

2. Tyre according to Claim 1, characterised in that, The bottom of the second crown rubber area is outwardly recessed to form a first recessed part, the top of the wing rubber area is outwardly protruded to form a first protruded part, and the first protruded part and the first recessed part are matched and adapted with each other.

3. Tyre according to Claim 2, characterised in that, The top of the wing rubber area is completely wrapped by the second crown rubber.

4. Tyre according to Claim 2, characterised in that, The top of the wing rubber area is outwardly extended on one side and is semi-wrapped by the second crown rubber.

5. Tyre according to Claim 3, characterised in that, The first crown rubber area accounts for 45%-55% of the thickness of the tread layer, the second crown rubber area accounts for 35%-40% of the thickness of the tread layer, and the base rubber area accounts for 10%-15% of the thickness of the tread layer.

6. Tyre according to Claim 4, characterised in that, The first crown rubber area accounts for 45%-55% of the thickness of the tread layer, the second crown rubber area accounts for 30%-35% of the thickness of the tread layer, and the base rubber area accounts for 15%-20% of the thickness of the tread layer.

7. The low heat-building four rubber tread tire of claim 1 wherein, The first crown rubber area, the second crown rubber area, the wing rubber area and the base rubber area are sequentially arranged from outside to inside to form a tread layer, and the first crown rubber area, the second crown rubber area, the wing rubber area and the base rubber area are all two-side high and middle low structures.

8. Tyre according to Claim 7, characterised in that, The bottom of the wing rubber area is outwardly recessed to form a second recessed part, the top of the base rubber area is outwardly protruded to form a second protruded part, and the second protruded part and the second recessed part are matched and adapted with each other.

9. Tyre according to Claim 8, characterised in that, The top of the base rubber area is completely wrapped by the wing rubber area.

10. Tyre according to Claim 9, characterised in that, The first crown rubber area accounts for 30%-35% of the thickness of the tread layer, the second crown rubber area accounts for 30%-35% of the thickness of the tread layer, the wing rubber area accounts for 15%-20% of the thickness of the tread layer, and the base rubber area accounts for 10%-15% of the thickness of the tread layer.

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