Automobile tire and preparation method thereof

Abstract

The invention discloses an automobile tire and a preparation method thereof, a buffer tire core ring located on the outer side of a reinforcing belt is embedded in a tire body in the circumferential direction of the tire body, and a plurality of hollow rings are arranged between the buffer tire core ring and the tire body; the preparation method of the automobile tire comprises the following steps: S1, molding the inner tire body in an inner tire mold; s2, sequentially gluing the steel wire ring and the reinforcing belt bundle on the outer peripheral surface of the inner tube body from inside to outside; s3, turning a concave ring on the periphery of the buffer tire core ring; s4, a circle of elastic hose is glued in the concave ring; s5, the buffer tire core ring in the step S4 is placed in an outer tire mold, an outer tire body is formed in the outer tire mold, a tire crown is located on the peripheral side of the buffer tire core ring, and at least one hollow ring is formed between the buffer tire core ring and the tire crown in the circumferential direction; and S6, cementing and vulcanizing the inner tire body in the S1 and the outer tire body in the S4 to obtain the automobile tire. According to the tire, the phenomenon that the tire loss is intensified due to the existence of the tire grooves in the tire crown is effectively reduced, and the service life and the safety of the tire are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile tires, in particular to an automobile tire and a preparation method thereof. Background Art

[0002] Automobile tires, especially those for large logistics and transportation vehicles, have tens of thousands or even hundreds of thousands of mileages a year, which leads to serious wear and tear on the tires. This usually occurs at the crown, because the tread pattern is processed on the circumference of the crown considering the tire's comfort, grip, handling, cornering, drainage, drag reduction and tire noise performance.

[0003] The tread of automobile tires is severely damaged by long-term collision and friction with the ground and ground obstacles, especially sharp objects such as stones or road debris, which will be embedded in the grooves of the tread. The stones cannot be separated. The ground may squeeze the stones to the bottom of the grooves during the rotation and break the tire. In addition, when the tread of ordinary tires contacts the ground, it is squeezed, the grooves expand to both sides, and the bottom of the grooves is pulled to form cracks. This phenomenon is most common in tires that have been used for a long time. Summary of the invention

[0004] The purpose of the present invention is to provide a car tire and a preparation method thereof, so as to solve the problem that stones or road debris will be embedded in the grooves of the tread and rupture the tire, and the grooves will expand to both sides when the ground squeezes the tread, and the bottom of the groove will be pulled to form cracks.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A car tire, comprising a carcass, wherein the carcass comprises: A plurality of steel wire rings having the same cross section as the tire are embedded in the tire body along its axial direction; A reinforcing belt is buried in the carcass along its circumferential direction and is located outside the wire ring, and the reinforcing belt is glued to the wire ring; A buffer tire core ring located outside the reinforcing belt is buried in the tire body along its circumferential direction, and a plurality of hollow rings are provided between the buffer tire core ring and the tire body.

[0006] A further technical solution is that the inner side of the buffer tire core ring is arranged on a fully rubber-impregnated steel wire mesh ring.

[0007] A further technical solution is that the fully glue-impregnated steel wire mesh ring is made of a steel wire mesh ring and nylon cloth glued to the inner and outer surfaces of the steel wire mesh ring, and is dipped in glue.

[0008] A further technical solution is: both sides of the wire ring are provided with roll-up parts outwardly, and at least one tire edge shaping steel ring is installed in the roll-up part.

[0009] A further technical solution is that a reinforcing steel ring is arranged outside the rolled portion.

[0010] A further technical solution is: the elastic hose is a soft spring body, and a layer of rubber is heat-coated on the outside of the soft spring body.

[0011] A further technical solution is that the hollow ring is arranged opposite to the tire groove on the outer peripheral surface of the tire crown.

[0012] A further technical solution is that a cord layer is arranged on the outer peripheral side of the reinforcing belt.

[0013] A method for preparing a vehicle tire comprises the following steps: S1, inner tube body is formed in inner tube mold to obtain inner tube body; S2, the wire ring and the reinforcing belt are glued to the outer peripheral surface of the inner carcass from the inside to the outside in sequence; S3, turning at least one concave ring along the circumferential direction on the outer periphery of the buffer tire core ring using a machine tool; S4, a circle of elastic hose is glued inside the concave circle; S5, placing the buffer tire core ring in S4 in a tire mold, forming the tire body in the tire mold, with the tire crown located on the outer peripheral side of the buffer tire core ring, and forming at least one hollow ring between the buffer tire core ring and the tire crown along the circumferential direction; S6, bonding and vulcanizing the inner carcass in S1 and the outer carcass in S4 to obtain a car tire.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: The present invention provides a car tire, wherein the tire crown has a variable tire groove. When the tire crown contacts the ground and is squeezed, the hollow circle at the bottom of the tire groove is deformed, the bottom of the tire groove sinks inward toward the wheel hub, and becomes wider and flatter toward both outer sides. The two outer edges of the tire groove are close to each other, and it is difficult for stones and other debris to enter from the narrowed tire groove outer opening. Even if there is debris that may enter accidentally, it will be clamped by the narrowed tire groove, preventing the debris from moving to the deeper tire groove bottom. When the tire crown is away from the bottom surface, the tire groove gradually returns to normal, and even slightly expands outward, which is conducive to the separation of stones and other debris from the tire groove; In addition, the reduction in the two outer edges of the tire groove can also prevent the generation of pulling force and cracks at the bottom of the tire groove, thereby ensuring the service life and safety of the tire.

[0015] The present invention provides a method for preparing automobile tires, which can produce a hollow ring opposite to the tire groove inside the tire crown, thereby reducing the risk of accelerated damage to the tire caused by the tire groove. The method is simple to operate, and the inner and outer carcasses are processed separately, which is convenient and quick. The buffer tire core ring in the outer carcass is integrally molded with the outer carcass by glue injection to avoid stratification of the two, thereby ensuring that the position of the hollow ring is stable and reliable during the driving of the tire, and the gas inside the hollow ring is not easy to leak out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a vehicle tire.

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the structure from a cross-sectional perspective.

[0018] Figure 3 For the present invention Figure 2 Schematic diagram of the wire ring structure.

[0019] Figure 4 For the present invention Figure 2 Schematic diagram of the structure with part A enlarged.

[0020] Figure numerals: 1, carcass; 2, wire ring; 3, reinforcement belt; 4, buffer tire core ring; 5, hollow ring; 6, fully rubberized steel wire mesh ring; 7, tire edge shaping steel ring; 8, reinforcement steel ring; 9, tire groove; 10, cord layer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1: In this embodiment, Figure 1 As shown, a vehicle tire includes a carcass 1, and the carcass 1 includes: A plurality of steel wire rings 2 having the same cross section as the tire are buried in the tire body 1 along its axial direction; A reinforcing belt 3 is buried in the carcass 1 along its circumferential direction and is located outside the wire ring 2. The reinforcing belt 3 is glued to the wire ring 2. A buffer tire core ring 4 is buried in the carcass 1 along its circumferential direction and is located outside the reinforcing belt 3 . A plurality of hollow rings 5 ​​are provided between the buffer tire core ring 4 and the carcass 1 .

[0028] The reinforcing belt 3 is buried inside the tire body 1 to preliminarily fix multiple steel wire rings 2 arranged in the circumferential direction, so as to strengthen the strength of the tire; under the action of the buffer tire core ring 4 and the hollow ring 5, the tire groove of the tire crown of the automobile tire can be changed. When the tire crown contacts the ground and is squeezed, the hollow ring 5 at the bottom of the tire groove 9 is deformed, and the bottom of the tire groove 9 sinks inward toward the wheel hub and becomes wider and flatter toward the two outer sides. The two outer edges of the tire groove 9 are close to each other, and it is difficult for stones and other debris to enter from the narrowed outer opening of the tire groove 9. Even if there may be debris that enters accidentally, it will be clamped by the narrowed tire groove 9 to prevent the debris from moving to the deeper bottom of the tire groove 9; When the tire crown is away from the bottom surface, the tire groove 9 gradually returns to normal, or even slightly expands outward, which is conducive to the separation of stones and other debris from the rotating tire groove 9 by centrifugal force or gravity; In addition, the reduction of the two outer edges of the tire groove 9 can also prevent the generation of pulling force and cause cracks to appear at the bottom of the tire groove 9, thereby ensuring the service life and safety of the tire.

[0029] It is worth noting that the hollow ring 5 can be an inflatable rubber hollow strip, or it can be an annular hollow hole formed between the buffer tire core ring 4 and the tire body 1.

[0030] Embodiment 2: The inner side of the cushion tire core ring 4 is arranged on the fully-infiltrated steel wire mesh ring 6. The fully-infiltrated steel wire mesh ring 6 is made of a steel wire mesh ring and nylon cloth bonded to the inner and outer surfaces of the steel wire mesh ring by gluing, and is dipped in glue.

[0031] When debris penetrates into the tire from the crown, the fully impregnated steel wire mesh ring 6 can prevent the debris from further penetrating into the tire, thus playing a certain protective role. The impregnation treatment is beneficial to increasing the bonding stability between the steel wire mesh ring and the nylon cloth, and reducing the pores between the two. The nylon cloth is used to increase the toughness of the fully impregnated steel wire mesh ring 6.

[0032] Preferably, both sides of the wire ring 2 are provided with turned-up parts outwardly, and at least one tire bead shaping steel ring 7 is installed in the turned-up parts.

[0033] The bead shaping steel ring 7 is beneficial to the shape stability of the tire toe.

[0034] A further technical solution is that a reinforcing steel ring 8 is arranged outside the rolling portion.

[0035] The tire toe is in contact with the wheel hub and is subjected to friction and compression from the wheel hub, so deformation and wear often occur at the toe. The bead shaping steel ring 7 can wrap the wire ring 2 and indirectly wrap the bead shaping steel ring 7 to prevent the wire ring 2 and the bead shaping steel ring 7 from being directly exposed or easily broken and scattered after the tire toe is damaged.

[0036] Preferably, the elastic hose is a soft spring body, and a layer of rubber is heat-coated on the outside of the soft spring body.

[0037] The soft spring body has tensile recovery elasticity, and plays a certain reshaping role inside the tire crown. Moreover, the hollow tube structure can adapt to a certain extrusion deformation. The use of the soft spring body can directly utilize existing materials without the need for additional processing, which saves time and effort. The rubber is hot-coated on the outside of the soft spring body to further enhance its strength and elasticity and prevent it from being deformed too easily.

[0038] Preferably, the hollow ring 5 is arranged opposite to the tread groove 9 on the outer peripheral surface of the tread crown.

[0039] The hollow ring 5 is located opposite to the tire groove 9 and can better adapt to the deformation of the tire groove 9.

[0040] Preferably, a cord layer 10 is provided on the outer peripheral side of the reinforcement belt 3 .

[0041] A method for preparing a vehicle tire comprises the following steps: S1, inner tube body is formed in inner tube mold to obtain inner tube body; S2, wire ring 2 and reinforcing belt 3 are glued to the outer peripheral surface of the inner carcass in sequence from the inside to the outside; S3, turning at least one concave ring along the circumferential direction on the outer circumference of the buffer tire core ring 4 using a machine tool; S4, a circle of elastic hose is glued inside the concave circle; S5, placing the buffer tire core ring 4 in S4 in the tire mold, the tire body is formed in the tire mold, the tire crown is located on the outer peripheral side of the buffer tire core ring, and at least one hollow ring 5 is formed between the buffer tire core ring 4 and the tire crown along the circumferential direction; S6, bonding and vulcanizing the inner carcass in S1 and the outer carcass in S5 to obtain a car tire.

[0042] The method is based on the traditional tire preparation process, such as preparation of rubber mixing, cord calendering, steel wire extrusion and other processes, and then enters the forming of the inner carcass in S1, puts the rubber-mixed material into the mold, and presses out the inner carcass; in S2, the steel wire ring 2 and the reinforcing belt 3 are glued on the inner carcass; in S3, after the buffer tire core ring 4 is extruded, a concave ring is processed on a lathe for installing or avoiding the hollow ring 5; in S4, an elastic hose such as a spring or a rubber hollow tube is glued in the concave ring; in S5, the rubber-mixed material is continuously put into the mold to make the outer carcass, so that the buffer tire core ring 4 and the outer carcass are more closely connected and the layer structure between the two is eliminated; finally, in S6, the inner carcass in S1 and the outer carcass in S5 are glued and put into a vulcanizing tank for vulcanization to obtain the automobile tire. Finally, a tire with a hollow ring 5 is obtained. The hollow ring 5 opposite to the tire groove is generated inside the tire crown, reducing the risk of accelerated damage to the tire caused by the tire groove. In addition, the method is simple to operate. The inner and outer carcasses are processed separately, which is convenient and fast. The buffer tire core ring in the outer carcass is integrally injection-molded with the outer carcass to avoid stratification of the two, ensuring that the position of the hollow ring is stable and reliable during the driving of the tire, and the gas inside the hollow ring is not easy to leak out.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle tire, comprising a carcass (1), characterized in that: The carcass (1) comprises: A plurality of steel wire rings (2) having a cross section consistent with the tire profile are embedded in the tire body (1) along its axial direction; A reinforcing belt (3) is embedded in the carcass (1) along its circumferential direction and is located outside the wire ring (2), and the reinforcing belt (3) is glued to the wire ring (2); A buffer tire core ring (4) located outside the reinforcing belt (3) is buried in the tire body (1) along its circumferential direction, and a plurality of hollow rings (5) are provided between the buffer tire core ring (4) and the tire body (1).

2. The automobile tire according to claim 1, characterized in that: The inner side of the buffer tire core ring (4) is provided with a fully rubber-impregnated steel wire mesh ring (6).

3. The automobile tire according to claim 2, characterized in that: The fully glue-impregnated steel wire mesh ring (6) is made of a steel wire mesh ring and nylon cloth glued to the inner and outer surfaces of the steel wire mesh ring, and is dipped in glue.

4. The automobile tire according to claim 1, characterized in that: The wire ring (2) is provided with outwardly turned-up portions on both sides, and at least one tire bead shaping steel ring (7) is installed in the turned-up portions.

5. The automobile tire according to claim 3, characterized in that: A reinforcing steel ring (8) is arranged outside the rolled portion.

6. The automobile tire according to claim 1, characterized in that: The elastic hose is a soft spring body, and a layer of rubber is heat-coated on the outside of the soft spring body.

7. The automobile tire according to claim 1, characterized in that: The hollow ring (5) is arranged opposite to the tread groove (9) on the outer peripheral surface of the tread crown.

8. The automobile tire according to claim 1, characterized in that: A cord layer (10) is provided on the outer peripheral side of the reinforcing belt (3).

9. A method for preparing a vehicle tire according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, inner tube body is formed in inner tube mold to obtain inner tube body; S2, the wire ring (2) and the reinforcing belt (3) are glued to the outer peripheral surface of the inner tube body in sequence from the inside to the outside; S3, turning at least one concave ring along the circumferential direction on the outer circumference of the buffer tire core ring (4) using a machine tool; S4, a circle of elastic hose is glued inside the concave circle; S5, placing the buffer tire core ring (4) in S4 in a tire mold, forming the tire body in the tire mold, with the tire crown located on the outer peripheral side of the buffer tire core ring, and at least one hollow ring (5) formed between the buffer tire core ring (4) and the tire crown along the circumferential direction; S6, bonding and vulcanizing the inner carcass in S1 and the outer carcass in S5 to obtain a car tire.

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