A tire capable of preventing shoulder cracking

Abstract

The present application provides a tire that prevents shoulder cracking, and belongs to the field of tire technology. The tire that prevents shoulder cracking includes a sidewall and a tread. There is a parting line on the sidewall, and a shoulder is fixedly arranged at the bottom of the tread. The sidewall is pressed on the outside of the shoulder, and the pressing end point of the shoulder and the sidewall avoids the position of the parting line. When the tire is formed, the tread is pressed first, and then the sidewall is turned up and pressed, so as to realize the molding of the tire, and then the sidewall that was originally pressed under the shoulder is covered on the shoulder, so that the pressing end point of the shoulder and the sidewall avoids the position of the parting line, reducing the probability of shoulder cracking. This structure allows the tread and sidewall bonding end points to avoid the parting line position, eliminates the sidewall rubber filling amount between the belt layer and the airtight layer, can effectively prevent shoulder cracking, make the tire tread ground contact pressure evenly distributed, improve the tire grip performance, reduce the tire rolling resistance, easy to operate, and convenient for production.

Description

Technical Field

[0001] The present application relates to the field of tires, and in particular to a tire capable of preventing shoulder cracking. Background Art

[0002] A tire is a circular elastic rubber product that rolls on the ground and is assembled on various vehicles or machinery. It is usually installed on a metal rim and can support the vehicle body, cushion external impacts, achieve contact with the road surface and ensure the vehicle's driving performance. Tires are often used under complex and harsh conditions. They are subjected to various deformations, loads, forces, and high and low temperature effects when driving. Therefore, they must have high load-bearing performance, traction performance, and cushioning performance. At the same time, they are also required to have high wear resistance and flexibility resistance, as well as low rolling resistance and heat generation.

[0003] The existing tire tread part is a Tread over side structure in which the tread rubber covers the sidewall rubber, such as Figure 1 and Figure 2 As shown, the sidewall 1 is pressed onto the shoulder 6, and the fitting point between the sidewall 1 and the shoulder 6 is located at the parting line 5. A large amount of sidewall glue is used for filling to bond the sidewall 1 and the shoulder 6. However, this connection method can easily cause the shoulder 6 and the sidewall 1 to separate, thereby causing the shoulder 6 to crack, affecting the service life of the tire. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a tire that prevents shoulder cracking, aiming to improve the pressing of the sidewall 1 on the shoulder 6, and the fitting point of the sidewall 1 and the shoulder 6 is located at the parting line 5, and a large amount of sidewall glue is used for filling to bond the sidewall 1 and the shoulder 6. However, this connection method can easily cause the separation of the shoulder 6 and the sidewall 1, thereby causing the shoulder 6 to crack, affecting the service life of the tire.

[0005] An embodiment of the present application provides a tire that prevents shoulder cracking, including a sidewall and a tread.

[0006] A parting line is arranged on the sidewall, a shoulder is fixedly arranged at the bottom of the tread, the sidewall is pressed onto the outside of the shoulder, and the pressing end points of the shoulder and the sidewall avoid the position of the parting line.

[0007] In a specific embodiment, a first glue layer is disposed on the outside of the sidewall, and a second glue layer matching the first glue layer is disposed on the inside of the shoulder.

[0008] In a specific embodiment, a crown protection layer is provided on the tread at the bottom of the first glue layer.

[0009] In a specific embodiment, a belt layer is arranged at the bottom of the crown protection layer.

[0010] In a specific embodiment, the crown protection layer and the belt layer are arranged in a horizontal direction.

[0011] In a specific embodiment, an apex rubber is disposed inside the bottom end of the sidewall.

[0012] In a specific embodiment, a bead steel wire is disposed inside the bottom of the sidewall and below the apex rubber.

[0013] In a specific embodiment, the tread, the shoulder and the first glue layer have the same width.

[0014] Beneficial effect: When the tire is formed, the tread is first pressed, and then the sidewall is turned up and pressed, so as to realize the forming of the tire, and then the sidewall that was originally pressed under the shoulder is covered on the shoulder, so that the pressing end point of the shoulder and the sidewall avoids the position of the parting line, and the probability of shoulder cracking is reduced. This structure makes the tread and sidewall bonding end points avoid the parting line position, eliminates the sidewall rubber filling amount between the belt layer and the airtight layer, can effectively prevent shoulder cracking, make the tire tread grounding pressure evenly distributed, improve the tire grip performance, reduce the tire rolling resistance, easy to operate, and easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the background technology structure of a tire for preventing shoulder cracking provided by an embodiment of the present application;

[0017] Figure 2 Provided for the implementation of this application Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 A schematic diagram of a tire structure for preventing shoulder cracking provided in an embodiment of the present application;

[0019] Figure 4 Provided for the implementation of this application Figure 3 Enlarged view of point B in the middle;

[0020] Figure 5 A schematic diagram of the structure of the pressing sequence during tire production for preventing shoulder cracking provided in an embodiment of the present application.

[0021] In the figure: 1-sidewall; 2-tread; 3-belt layer; 5-parting line; 6-shoulder. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] See also Figure 1-Figure 5 The present application provides a tire for preventing shoulder cracking, comprising a sidewall 1 and a tread 2.

[0024] See also Figure 3 , Figure 4 and Figure 5 , there is a parting line 5 on the sidewall 1, a shoulder 6 is fixedly arranged at the bottom of the tread 2, the sidewall 1 is pressed on the outside of the shoulder 6, and the pressing end point of the shoulder 6 and the sidewall 1 avoids the position of the parting line 5. Among them, when the tire is formed, the tread 2 is pressed first, and then the sidewall 1 is reversed and pressed, so as to realize the molding of the tire, and then the sidewall 1 originally pressed under the shoulder 6 is covered on the shoulder 6, so that the pressing end point of the shoulder 6 and the sidewall 1 avoids the position of the parting line 5, reducing the probability of cracking of the shoulder 6. This structure makes the end point of the tread 2 and the sidewall 1 avoid the position of the parting line 5, eliminates the rubber filling amount of the sidewall 1 between the belt layer 3 and the airtight layer, can effectively prevent the shoulder 6 from cracking, makes the ground contact pressure of the tire tread 2 evenly distributed, improves the tire grip performance, reduces the tire rolling resistance, is easy to operate, and is convenient for production.

[0025] In this embodiment, a first glue layer is provided on the outside of the sidewall 1, and a second glue layer matching the first glue layer is provided on the inside of the shoulder 6. The connection between the sidewall 1 and the shoulder 6 is achieved by the lower first glue layer and the second glue layer. A crown protective layer is provided on the tread 2 at the bottom of the first glue layer. A belt layer 3 is provided at the bottom of the crown protective layer. The crown protective layer and the belt layer 3 are arranged in a horizontal direction. The widths of the tread 2, the shoulder 6 and the first glue layer are the same. Among them, the strength of the tire can be improved. A apex rubber is provided inside the bottom end of the sidewall 1. A tire lip steel wire is provided inside the bottom of the sidewall 1 below the apex rubber.

[0026] The working principle of this tire that prevents shoulder cracking:

[0027] When the tire is formed, the tread 2 is pressed first, and then the sidewall 1 is reversed and pressed, so as to realize the forming of the tire, and then the sidewall 1 originally pressed under the shoulder 6 is covered on the shoulder 6, so that the pressing end point of the shoulder 6 and the sidewall 1 avoids the position of the parting line 5, and reduces the probability of cracking of the shoulder 6. This structure makes the end point of the tread 2 and the sidewall 1 avoid the position of the parting line 5, eliminates the rubber filling amount of the sidewall 1 between the belt layer 3 and the airtight layer, can effectively prevent the shoulder 6 from cracking, make the grounding pressure of the tire tread 2 evenly distributed, improve the tire grip performance, reduce the tire rolling resistance, easy to operate, and convenient for production.

[0028] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A tire for preventing shoulder cracking, characterized in that: include A sidewall (1) and a tread (2), wherein the sidewall (1) has a parting line (5), a shoulder (6) is fixedly provided at the bottom of the tread (2), the sidewall (1) is pressed onto the outside of the shoulder (6), and the pressing end points of the shoulder (6) and the sidewall (1) avoid the position of the parting line (5).

2. A tire for preventing shoulder cracking according to claim 1, characterized in that: The outside of the sidewall (1) is provided with a first glue layer, and the inside of the shoulder (6) is provided with a second glue layer matching the first glue layer.

3. A tire for preventing shoulder cracking according to claim 2, characterized in that: The tread (2) is provided with a crown protection layer at the bottom of the first glue layer.

4. A tire for preventing shoulder cracking according to claim 3, characterized in that: A belt layer (3) is arranged at the bottom of the crown protection layer.

5. A tire for preventing shoulder cracking according to claim 4, characterized in that: The crown protection layer and the belt layer (3) are arranged in a horizontal direction.

6. A tire for preventing shoulder cracking according to claim 1, characterized in that: A apex rubber is arranged inside the bottom end of the sidewall (1).

7. A tire for preventing shoulder cracking according to claim 6, characterized in that: A tire lip steel wire is arranged inside the bottom of the tire sidewall (1) and below the apex rubber.

8. The tire for preventing shoulder cracking according to claim 1, characterized in that: The tread (2), the shoulder (6) and the first glue layer have the same width.

Images