Structure and method for improving durability of tire

Abstract

The invention provides a structure and method for improving the durability of a tire, and belongs to the technical field of tires. The structure for improving the durability of the tire comprises a first belted layer and a second belted layer, the two ends of the first belted layer are both wrapped with belted layer rubber coating, belted layer cushion rubber is arranged at the positions, located on the tops of the belted layer rubber coating, of the two ends of the first belted layer, and the belted layer cushion rubber on the two sides both extend towards the center line of the first belted layer and make contact with the upper surface of the first belted layer. Compared with an existing mass production design production scheme project, the durable tire has the advantages that the durability of the tire can be effectively improved on the premise of increasing lower weight, and the aim of enhancing the durability can be fulfilled by using existing equipment without increasing related equipment and changing related production processes in the actual production process.

Description

Technical Field

[0001] The present application relates to the field of tires, and in particular, to a structure and method for improving tire durability. Background Art

[0002] Tires are circular elastic rubber products that roll on the ground and are installed on various vehicles or machines. They are usually installed on metal rims, can support the vehicle body, buffer external impacts, achieve contact with the road surface and ensure the driving performance of the vehicle. 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, so they must have high load-bearing performance, traction performance, and buffering performance. At the same time, they are also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation.

[0003] With the development of China's social economy, passenger cars have gradually entered every family, and with it comes an increase in car sales and an increase in the production capacity of tire suppliers. With the popularization of relevant tire knowledge in the OE supporting market and the replacement market, individual consumers have higher and higher requirements for tire life (durability). Among them, one of the tire quality problems that has a more direct impact on tire durability is tread deformation and steel wire protrusion, which has brought more and more problems to the reputation of tire manufacturers, economic losses (claims), etc. The existing method of improving the strength of tire belt layer steel wire to prevent deformation and protrusion is to pad or cover the edge of the first belt layer with rubber.

[0004] Because the treatment method of rubber wrapping or rubber padding on the edge of the first belt layer plays a certain role in improving the durability of the tire, but the improvement in durability is limited under special road conditions and extreme conditions. Summary of the invention

[0005] In order to make up for the above shortcomings, the present application provides a structure and method for improving tire durability, aiming to improve the treatment method of the edge rubber or cushion rubber of the first belt layer, which plays a certain role in improving tire durability, but has limited improvement in durability under special road conditions and extreme conditions.

[0006] On the one hand, an embodiment of the present application provides a structure for improving tire durability, including a first belt layer and a second belt layer.

[0007] Both ends of the belt layer are wrapped with belt layer rubber, and both ends of the first belt layer are located on the top of the belt layer rubber and provided with belt layer rubber pads, and the belt layer rubber pads on both sides extend toward the center line of the first belt layer and contact with the upper surface of the first belt layer.

[0008] In a specific embodiment, the rubber coating of the belt layers on both sides is respectively started from the upper surface of the first belt layer and wraps the side surfaces of the first belt layer respectively, and then extends to the lower surface of the first belt layer.

[0009] In a specific embodiment, the belt layer rubber pads on both sides are laid from the ends of the upper surface of the belt layer rubber bag and then extend toward the center of the first belt layer and contact the upper surface of the first belt layer.

[0010] In a specific embodiment, the belt layer rubber covering on both sides is located on the lower surface of the first belt layer and has a laying length that is greater than the laying length on the upper surface of the first belt layer.

[0011] In a specific embodiment, the laying length of the belt layer rubber covering on both sides located on the lower surface of the first belt layer is 12.5-15.5 mm.

[0012] In a specific embodiment, the laying length of the belt layer rubber covering on both sides located on the upper surface of the first belt layer is 10.2-11.5 mm.

[0013] In a specific embodiment, the laying length of the belt layer cushion rubber is 20.1-23.1 mm.

[0014] On the other hand, the embodiment of the present application further provides a method for improving tire durability, comprising the above-mentioned structure for improving tire durability, and the following steps:

[0015] Steps: In the production of semi-finished products, when bonding the first belt layer and the second belt layer, first prepare the belt layer rubber cover and the belt layer rubber cushion;

[0016] Step: coating the belt layer with glue from the upper surface of the first belt layer and wrapping the sides of the first belt layer respectively, and then extending to the lower surface of the first belt layer, and coating the other end of the first belt layer with glue in the same way;

[0017] Steps: The belt layer rubber pad is laid from the end of the upper surface of the belt layer rubber coating and then extends to the center of the first belt layer and contacts with the upper surface of the first belt layer. Then, the other end of the first belt layer is also coated with rubber according to this method to complete the coating of the first belt layer.

[0018] In a specific embodiment, in the step, when wrapping and gluing the first belt layer, the gluing length marks should be made on the upper and lower surfaces of both ends of the first belt layer to prevent the gluing from being too long or too short.

[0019] In a specific implementation, in the step, when the first belt layer is cushioned with glue, the length mark of the belt layer cushioning glue coating should be made on the upper surface of the first belt layer to prevent the glue coating from being too long or too short.

[0020] Beneficial effects: In the preparation of semi-finished products, based on the original rubber pad or rubber coating process of the first belt layer, an additional process is added to complete the process of first rubber coating and then rubber padding of the first belt layer, so as to achieve the purpose of enhancing the edge strength of the belt layer and improving the durability of the tire. In order to further improve the durability of the tire and optimize the design of the tire belt layer structure, in the stage of preparing finished products, the optimization treatment measures of first rubber coating and then rubber padding are carried out at the edges of both sides of the first belt layer in two steps to strengthen the strength of the edge of the belt layer, so as to ensure the rigidity of the overall structure of the tread during various extreme durability tests, and prevent the occurrence of tread deformation and steel wire puncture. Compared with the existing mass production design and production plan projects, the present invention can effectively improve the durability of the tire under the premise of increasing the weight, and in the actual production process, there is no need to add related equipment or change related production processes. The purpose of enhancing the durability performance can be achieved by using existing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a schematic diagram of the structure and method for improving tire durability provided by an embodiment of the present application.

[0023] In the figure: 1-belt layer rubber pad; 2-second belt layer; 3-belt layer rubber cover; 4-first belt layer. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] See also Figure 1 The present application provides a structure for improving tire durability, including a first belt layer 4 and a second belt layer 2.

[0027] Both ends of the first belt layer 4 are wrapped with belt layer rubber 3, and belt layer rubber pads 1 are arranged on the top of the belt layer rubber 3 at both ends of the first belt layer 4, and the belt layer rubber pads 1 on both sides extend to the center line of the first belt layer 4 and contact the upper surface of the first belt layer 4. In the preparation of the semi-finished product, on the basis of the original rubber pad or rubber coating process of the first belt layer 4, another process is added to complete the process of rubber coating and rubber padding of the first belt layer 4, so as to enhance the edge strength of the belt layer and improve the durability of the tire. In order to further improve the durability of the tire and optimize the design of the tire belt structure, in the preparation stage of the finished product, the optimization treatment measures of rubber coating and rubber padding are carried out in two steps at the edges of both sides of the first belt layer 4, so as to strengthen the strength of the belt edge, so as to ensure the rigidity of the overall structure of the tread during various extreme durability tests, and prevent the occurrence of tread deformation and steel wire puncture. Compared with the existing mass-produced design and production plan projects, the present invention can effectively improve the durability performance of the tire under the premise of increasing the weight, and in the actual production process, there is no need to add relevant equipment or change relevant production processes. The purpose of enhancing the durability performance can be achieved by using existing equipment.

[0028] In this embodiment, the belt layer rubber lapping 3 on both sides is respectively applied from the upper surface of the first belt layer 4 and wraps the side of the first belt layer 4 respectively, and then extends to the lower surface of the first belt layer 4. The belt layer rubber pad 1 on both sides is laid from the end of the upper surface of the belt layer rubber lapping 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. The laying length of the belt layer rubber lapping 3 on both sides located on the lower surface of the first belt layer 4 is greater than the laying length of the upper surface of the first belt layer 4.

[0029] In the specific setting, the laying length of the belt layer rubber 3 on both sides located on the lower surface of the first belt layer 4 is 12.5 mm. The laying length of the belt layer rubber 3 on both sides located on the upper surface of the first belt layer 4 is 10.2 mm. The laying length of the belt layer rubber pad 1 is 20.1 mm.

[0030] See also Figure 1 The embodiment of the present application further provides a method for improving tire durability, comprising the above structure for improving tire durability, and the following steps:

[0031] Step 1: In the production of semi-finished products, when bonding the first belt layer 4 and the second belt layer 2, first prepare the belt layer rubber cover 3 and the belt layer rubber cushion 1;

[0032] Step 2: Apply the rubber coating 3 of the belt layer from the upper surface of the first belt layer 4 and wrap the side surfaces of the first belt layer 4 respectively, and then extend to the lower surface of the first belt layer 4, and apply the rubber coating to the other end of the first belt layer 4 according to the same method;

[0033] Step 3: The belt layer rubber pad 1 is laid from the end of the upper surface of the belt layer rubber bag 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. Then, the other end of the first belt layer 4 is also coated with rubber according to this method to complete the coating of the first belt layer 4.

[0034] In this embodiment, in step 2, when wrapping and gluing the first belt layer 4, the gluing length marks should be made on the upper and lower surfaces of both ends of the first belt layer 4. Specifically, the gluing marks should be made on the lower surfaces of both ends of the first belt layer 4 from the end to the center position of 12.5mm, and the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 from the end to the center position of 10.2mm, to prevent the gluing from being too long or too short. In step 3, when padding the first belt layer 4, the gluing length marks of the belt layer padding 1 should be made on the upper surface of the first belt layer 4. Specifically, the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 from the end to the center position of 20.1mm, to prevent the gluing from being too long or too short.

[0035] In the present application, the belt layer rubber coating 3 and the belt layer rubber pad 1 are configured and produced using the same formula: the weight ratio of the raw materials in the formula is: 100 parts of natural rubber, other components include 20-40 parts of carbon black, 5-20 parts of white carbon black, 0.1-0.4 parts of environmentally friendly plasticizer, 0.5-2 parts of stearic acid, 3-7 parts of zinc oxide, 1-3 parts of carbon black dispersant, 0.5-2 parts of antioxidant RD, 1.5-3 parts of antioxidant 4020, 1-7.5 parts of silane coupling agent, 1-4 parts of tackifying resin, 0.5-2 parts of adhesive resin, insoluble sulfur HI S7020 1.5-3 parts, promoter NS 1-2.5 parts, anti-scorch agent CTP 0.1-0.4 parts, adhesion promoter RA-65 1-3 parts; the carbon black used is N660 carbon black or N550 carbon black or a combination of the two; the tackifying resin is acetylene type tert-butyl phenolic super tackifying resin, and the adhesive resin is resorcinol or resorcinol formaldehyde resin. When the carbon black used is N660 carbon black or N550 carbon black, its dosage is 25-35 parts. White carbon black with a nitrogen adsorption specific surface area of ​​160-200 m2 / g is selected, and the dosage is 8-15 parts. The dosage of stearic acid is 1-2 parts, the dosage of zinc oxide is 4-6 parts, and the dosage of carbon black dispersant is 1-2 parts. The dosage of antioxidant RD is 1-1.5 parts, and the dosage of the antioxidant 4020 is 1.5-2.5 parts. The amount of silane coupling agent is 30% of the amount of white carbon black. The amount of insoluble sulfur HI S7020 is 1.8-2.5 parts, and the insoluble sulfur used is characterized by 20% of cyclohexane oil and 70% of insoluble sulfur. The amount of tackifying resin is 1.5-2.5 parts, and the amount of adhesive resin is 1-2 parts. The amount of accelerator NS is 1.2-1.8 parts, and the amount of adhesion promoter RA-65 is 1.5-2.5 parts.

[0036] Embodiment 2

[0037] See also Figure 1 The present application provides a structure for improving tire durability, including a first belt layer 4 and a second belt layer 2.

[0038] Both ends of the first belt layer 4 are wrapped with a belt layer rubber cover 3, and both ends of the first belt layer 4 are located on the top of the belt layer rubber cover 3 and a belt layer rubber pad 1 is arranged, and the belt layer rubber pads 1 on both sides extend toward the center line of the first belt layer 4 and contact with the upper surface of the first belt layer 4.

[0039] In this embodiment, the belt layer rubber lapping 3 on both sides is respectively applied from the upper surface of the first belt layer 4 and wraps the side of the first belt layer 4 respectively, and then extends to the lower surface of the first belt layer 4. The belt layer rubber pad 1 on both sides is laid from the end of the upper surface of the belt layer rubber lapping 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. The laying length of the belt layer rubber lapping 3 on both sides located on the lower surface of the first belt layer 4 is greater than the laying length of the upper surface of the first belt layer 4.

[0040] In the specific setting, the laying length of the belt layer rubber 3 on both sides located on the lower surface of the first belt layer 4 is 15.5 mm. The laying length of the belt layer rubber 3 on both sides located on the upper surface of the first belt layer 4 is 11.5 mm. The laying length of the belt layer rubber pad 1 is 23.1 mm.

[0041] See also Figure 1 The embodiment of the present application further provides a method for improving tire durability, comprising the above structure for improving tire durability, and the following steps:

[0042] Step 1: In the production of semi-finished products, when bonding the first belt layer 4 and the second belt layer 2, first prepare the belt layer rubber cover 3 and the belt layer rubber cushion 1;

[0043] Step 2: Apply the rubber coating 3 of the belt layer from the upper surface of the first belt layer 4 and wrap the side surfaces of the first belt layer 4 respectively, and then extend to the lower surface of the first belt layer 4, and apply the rubber coating to the other end of the first belt layer 4 according to the same method;

[0044] Step 3: The belt layer rubber pad 1 is laid from the end of the upper surface of the belt layer rubber bag 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. Then, the other end of the first belt layer 4 is also coated with rubber according to this method to complete the coating of the first belt layer 4.

[0045] In this embodiment, in step 2, when wrapping and gluing the first belt layer 4, the length of the gluing should be marked on the upper and lower surfaces of both ends of the first belt layer 4. Specifically, the gluing marks should be made on the lower surfaces of both ends of the first belt layer 4 at 15.5mm from the end to the center, and the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 at 11.5mm from the end to the center, to prevent the gluing from being too long or too short. In step 3, when padding the first belt layer 4, the length of the gluing of the belt layer padding 1 should be marked on the upper surface of the first belt layer 4. Specifically, the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 at 23.1mm from the end to the center, to prevent the gluing from being too long or too short.

[0046] Embodiment 3

[0047] See also Figure 1 The present application provides a structure for improving tire durability, including a first belt layer 4 and a second belt layer 2.

[0048] Both ends of the first belt layer 4 are wrapped with a belt layer rubber cover 3, and both ends of the first belt layer 4 are located on the top of the belt layer rubber cover 3 and a belt layer rubber pad 1 is arranged, and the belt layer rubber pads 1 on both sides extend toward the center line of the first belt layer 4 and contact with the upper surface of the first belt layer 4.

[0049] In this embodiment, the belt layer rubber lapping 3 on both sides is respectively applied from the upper surface of the first belt layer 4 and wraps the side of the first belt layer 4 respectively, and then extends to the lower surface of the first belt layer 4. The belt layer rubber pad 1 on both sides is laid from the end of the upper surface of the belt layer rubber lapping 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. The laying length of the belt layer rubber lapping 3 on both sides located on the lower surface of the first belt layer 4 is greater than the laying length of the upper surface of the first belt layer 4.

[0050] In the specific setting, the laying length of the belt layer rubber 3 on both sides located on the lower surface of the first belt layer 4 is 13 mm. The laying length of the belt layer rubber 3 on both sides located on the upper surface of the first belt layer 4 is 11 mm. The laying length of the belt layer rubber pad 1 is 22 mm.

[0051] See also Figure 1 The embodiment of the present application further provides a method for improving tire durability, comprising the above structure for improving tire durability, and the following steps:

[0052] Step 1: In the production of semi-finished products, when bonding the first belt layer 4 and the second belt layer 2, first prepare the belt layer rubber cover 3 and the belt layer rubber cushion 1;

[0053] Step 2: Apply the rubber coating 3 of the belt layer from the upper surface of the first belt layer 4 and wrap the side surfaces of the first belt layer 4 respectively, and then extend to the lower surface of the first belt layer 4, and apply the rubber coating to the other end of the first belt layer 4 according to the same method;

[0054] Step 3: The belt layer rubber pad 1 is laid from the end of the upper surface of the belt layer rubber bag 3 and then extends to the center of the first belt layer 4 and contacts the upper surface of the first belt layer 4. Then, the other end of the first belt layer 4 is also coated with rubber according to this method to complete the coating of the first belt layer 4.

[0055] In this embodiment, in step 2, when wrapping and gluing the first belt layer 4, the gluing length marks should be made on the upper and lower surfaces of both ends of the first belt layer 4. Specifically, the gluing marks should be made on the lower surfaces of both ends of the first belt layer 4 at 13mm from the end to the center, and the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 at 11mm from the end to the center, to prevent the gluing from being too long or too short. In step 3, when padding the first belt layer 4, the gluing length marks of the belt layer padding 1 should be made on the upper surface of the first belt layer 4. Specifically, the gluing marks should be made on the upper surfaces of both ends of the first belt layer 4 at 22mm from the end to the center, to prevent the gluing from being too long or too short.

[0056] The structure and method for improving tire durability work as follows:

[0057] In the preparation of semi-finished products, on the basis of the original rubber pad or rubber coating process of the first belt layer 4, another process is added to complete the process of rubber coating first and then rubber padding of the first belt layer 4, so as to achieve the purpose of enhancing the edge strength of the belt layer and improving the durability of the tire. In order to further improve the durability of the tire and optimize the design of the tire belt layer structure, in the stage of preparing finished products, the optimization treatment measures of rubber coating first and then rubber padding are carried out in two steps at the edges of both sides of the first belt layer 4 to strengthen the strength of the edge of the belt layer, so as to ensure the rigidity of the overall structure of the tread during various extreme durability tests and prevent the occurrence of tread deformation and steel wire puncture. Compared with the existing mass production design and production plan projects, the present invention can effectively improve the durability of the tire under the premise of increasing the weight, and in the actual production process, there is no need to add related equipment or change related production processes, and the purpose of enhancing the durability performance can be achieved by using existing equipment.

[0058] 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 structure for improving tire durability, characterized in that: include A first belt layer (4) and a second belt layer (2), both ends of the belt layer (4) are wrapped with a belt layer rubber coating (3), both ends of the first belt layer (4) are located on the top of the belt layer rubber coating (3) and are provided with a belt layer rubber pad (1), and the belt layer rubber pads (1) on both sides extend toward the center line of the first belt layer (4) and are in contact with the upper surface of the first belt layer (4).

2. A structure for improving tire durability according to claim 1, characterized in that: The belt layer rubber coating (3) on both sides is respectively started from the upper surface of the first belt layer (4) and the side surfaces of the first belt layer (4) are respectively wrapped, and then extended to the lower surface of the first belt layer (4).

3. The structure for improving tire durability according to claim 1, characterized in that: The belt layer rubber pads (1) on both sides are laid from the ends of the upper surface of the belt layer rubber bag (3) and then extend toward the center of the first belt layer (4) and contact the upper surface of the first belt layer (4).

4. The structure for improving tire durability according to claim 1, characterized in that: The belt layer rubber coating (3) on both sides is located on the lower surface of the first belt layer (4) and has a laying length that is greater than the laying length on the upper surface of the first belt layer (4).

5. The structure for improving tire durability according to claim 1, characterized in that: The laying length of the belt layer rubber coating (3) on both sides located on the lower surface of the first belt layer (4) is 12.5-15.5 mm.

6. The structure for improving tire durability according to claim 1, characterized in that: The laying length of the belt layer rubber coating (3) on both sides located on the upper surface of the first belt layer (4) is 10.2-11.5 mm.

7. The structure for improving tire durability according to claim 1, characterized in that: The laying length of the belt layer rubber pad (1) is 20.1-23.1 mm.

8. A method for improving tire durability, characterized in that: include The structure for improving tire durability according to any one of claims 1 to 7, and the following steps: Step 1: In the production of semi-finished products, when bonding the first belt layer (4) and the second belt layer (2), first prepare the belt layer rubber cover (3) and the belt layer rubber cushion (1); Step 2: Applying the rubber coating (3) to the belt layer from the upper surface of the first belt layer (4) and wrapping the side surfaces of the first belt layer (4) respectively, and then extending to the lower surface of the first belt layer (4), and applying the rubber coating to the other end of the first belt layer (4) in the same manner; Step 3: The belt layer rubber pad (1) is laid from the end of the upper surface of the belt layer rubber bag (3) and then extends to the center of the first belt layer (4) and contacts the upper surface of the first belt layer (4). Then, the other end of the first belt layer (4) is also coated with rubber according to this method, thereby completing the coating of the first belt layer (4).

9. A method for improving tire durability according to claim 8, characterized in that: In step 2, when wrapping and gluing the first belt layer (4), the gluing length marks should be made on the upper and lower surfaces at both ends of the first belt layer (4) to prevent the gluing from being too long or too short.

10. The method for improving tire durability according to claim 8, characterized in that: In step 3, when the first belt layer (4) is cushioned with glue, the length mark of the belt layer cushion glue (1) should be made on the upper surface of the first belt layer (4) to prevent the glue from being too long or too short.

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