Tire sidewall rubber shortage covering structure

Abstract

The utility model provides a tire sidewall rubber shortage covering structure, and belongs to the technical field of tires. The covering structure for the tire sidewall lack of rubber comprises a tire tread. A sidewall is arranged at the tail end of the tread, the joint of the tail end of the tread and the top end of the sidewall is a fitting part, and a knurling covering layer is arranged at the fitting part of the tread and the sidewall. The length of a corresponding semi-finished product and the expected range of the tail end of the tread on the sidewall can be obtained through preliminary calculation according to the specification and structure design of the tire, the range is subjected to standardized design, and a knurling covering layer is added, so that the flowability of rubber during vulcanization is improved, and the purpose of improving sidewall rubber shortage is achieved. The knurling covering layer is arranged at the attaching part of the tread and the sidewall, so that the sidewall is prevented from being lack of rubber, the defective rate of the sidewall lack of rubber is greatly reduced, an external spraying process step can be omitted, and the production cost of the tire is saved.

Description

Technical Field

[0001] The present application relates to the field of tires, and in particular to a covering structure for rubber deficiency on a tire sidewall. 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] A tire is a complex structure consisting of many layers of materials pressed together, which makes it most likely for the joints of semi-finished products to have adhesive defects, especially at the end of the tread and the ends of each cord and apex rubber. Sidewall adhesive defects are a common tire appearance defect, and tires with this defect cannot be sold normally. To prevent sidewall adhesive defects, tires are generally sprayed with a spray liquid. Spraying itself is expensive and requires special external spraying equipment, so the production cost is high. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a covering structure for the lack of glue on the sidewall of the tire, aiming to improve the problem that in order to prevent the lack of glue on the sidewall, the general tire will adopt a method of adding spray liquid, the spraying itself is expensive, and special external spraying equipment is required, so the production cost is high.

[0005] An embodiment of the present application provides a covering structure for a tire sidewall with missing rubber, comprising a tread.

[0006] A sidewall is arranged at the end of the tread, a joint between the end of the tread and the top end of the sidewall is a bonding portion, and a knurled covering layer is arranged at the bonding portion between the tread and the sidewall.

[0007] In a specific embodiment, the knurled covering layer extends from the end of the tread to the sidewall to completely cover the fitting portion.

[0008] In a specific embodiment, longitudinal pattern grooves are arranged on the tread.

[0009] In a specific embodiment, a cap layer and a belt layer are sequentially arranged on the inner side of the tread.

[0010] Beneficial effects: Since the sidewall not only has to play an aesthetic role, but also usually has to serve as an identification function, in order not to affect these basic functions of the sidewall, the range of the area that must be covered must be calculated in advance. According to the tire specification and structural design, preliminary calculations can be made to obtain the corresponding semi-finished product length and the range where the end of the tread is expected to be located on the sidewall. This range is standardized and designed, and a knurled covering layer is added. The function is to increase the fluidity of the rubber during vulcanization, thereby achieving the purpose of improving the sidewall glue shortage. By providing a knurled covering layer at the joint between the tread and the sidewall, it can not only prevent the sidewall glue shortage, but also greatly reduce the incidence of sidewall glue shortage, and can eliminate the external spraying process step, saving tire production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 It is a schematic diagram of a covering structure for a tire sidewall rubber deficiency provided in an embodiment of the present application.

[0013] In the figure: 1-tread; 2-sidewall; 3-knurled covering layer; 4-longitudinal pattern groove; 5-fitting part. DETAILED DESCRIPTION

[0014] 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.

[0015] See also Figure 1 The present application provides a covering structure for a tire sidewall with missing rubber, comprising a tread 1.

[0016] See also Figure 1The end of the tread 1 is provided with a sidewall 2, and the junction of the end of the tread 1 and the top of the sidewall 2 is a fitting portion 5, and a knurled covering layer 3 is provided at the fitting portion 5 of the tread 1 and the sidewall 2. Among them, since the sidewall 2 not only has to play a role in aesthetics, but also usually needs to have a logo function, in order not to affect these basic functions of the sidewall 2, the range of the area that must be covered must be calculated in advance. According to the preliminary calculation of the tire specification structure design, the corresponding semi-finished product length and the range where the end of the tread 1 is expected to be located at the sidewall 2 can be obtained. This range is standardized and designed, and a knurled covering layer 3 is added. The function is to increase the fluidity of the rubber during vulcanization, thereby achieving the purpose of improving the lack of rubber on the sidewall 2. By providing a knurled covering layer 3 at the fitting portion 5 of the tread 1 and the sidewall 2, the mold design method can not only prevent the lack of rubber on the sidewall 2, but also greatly reduce the incidence of the defective lack of rubber on the sidewall 2, and can also cancel the external spraying process step, saving the tire production cost.

[0017] In this embodiment, the knurled covering layer 3 extends from the end of the tread 1 to the sidewall 2, completely covering the fitting portion 5. According to the tire specification and structural design, the corresponding semi-finished product length and the expected range of the end of the tread 1 located at the sidewall 2 can be obtained by preliminary calculation. This range is standardized and designed, and the knurled covering layer 3 is added. The function of this is to increase the fluidity of the rubber during vulcanization, thereby achieving the purpose of improving the rubber shortage of the sidewall 2.

[0018] In this embodiment, since the sidewall 2 not only has the function of aesthetics, but also generally has the function of identification, in order not to affect these basic functions of the sidewall 2, the range of the coverage area must be calculated in advance. How to calculate according to the tire specifications is known to those skilled in the art and will not be described in detail here.

[0019] In a specific embodiment, longitudinal pattern grooves 4 are arranged on the tread 1 .

[0020] In a specific embodiment, a cap layer and a belt layer are sequentially arranged on the inner side of the tread 1 .

[0021] Working principle of the tire sidewall missing rubber covering structure:

[0022] Since the sidewall 2 not only has to play an aesthetic role, but also usually has to have a marking function, in order not to affect these basic functions of the sidewall 2, the range of the area that must be covered must be calculated in advance. According to the tire specification structure design, preliminary calculations can be made to obtain the corresponding semi-finished product length and the expected range of the end of the tread 1 located in the sidewall 2. This range is standardized and designed, and a knurled covering layer 3 is added. The function is to increase the fluidity of the rubber during vulcanization, thereby achieving the purpose of improving the lack of rubber on the sidewall 2. By providing a knurled covering layer 3 at the fitting portion 5 of the tread 1 and the sidewall 2, not only can the lack of rubber on the sidewall 2 be prevented, the incidence of the defective lack of rubber on the sidewall 2 is greatly reduced, and the external spraying process step can be eliminated, saving the tire production cost.

[0023] It should be noted that the model and specifications of the knurled covering layer 3 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0024] 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 covering structure for rubber deficiency on the tire sidewall, characterized in that: include A tread (1), wherein a sidewall (2) is arranged at the end of the tread (1), a joining portion (5) is formed between the end of the tread (1) and the top of the sidewall (2), and a knurled covering layer (3) is arranged at the joining portion (5) between the tread (1) and the sidewall (2).

2. A tire sidewall missing rubber covering structure according to claim 1, characterized in that: The knurled covering layer (3) extends from the end of the tread (1) to the sidewall (2) to completely cover the fitting portion (5).

3. The tire sidewall missing rubber covering structure according to claim 1, characterized in that: The tread (1) is provided with longitudinal pattern grooves (4).

4. The tire sidewall missing rubber covering structure according to claim 1, characterized in that: The inner side of the tread (1) is provided with a cap layer and a belt layer in sequence.

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