Radial tire with fiber 0° belt and method for processing the same

Abstract

This invention discloses a radial tire with a 0° fiber belt layer and its processing method, relating to the field of tire technology. It includes a steel belt layer, with a 0° fiber belt layer wound around its outer surface. The 0° fiber belt layer is covered by a tire crown, and the steel belt layer encloses a tire carcass. The processing method includes the following steps: S1, raw material conveying: the steel belt layer, the 0° fiber belt layer, and the tire crown are sequentially conveyed to a forming module via a conveying module; S2, steel belt layer forming; S3, 0° fiber belt layer forming; S4, tire crown forming; S5, tire blank transfer and assembly with the tire carcass. The 0° fiber belt layer tightens the steel belt layer, ensuring the radial tire's excellent impact resistance and durability. This allows for accurate alignment of the steel belt layer's oblique joints, ensuring the accuracy of subsequent processing, improving the processing efficiency of the steel belt layer, avoiding stress concentration caused by edge warping, and precisely solving the edge warping problem.

Description

Technical Field

[0001] This invention relates to the field of tire technology, and in particular to a radial tire having a fiber 0° belt layer and a processing method thereof. Background Technology

[0002] Radial tires have a multi-layered composite belt structure, in which the steel belt layer provides clamping force and bears internal pressure and load. The tire is processed in two stages by a tire forming machine. On the tire drum, the inner liner, tire body and steel wire ring are bonded and wrapped to form a cylindrical tire body. On the bonding drum, the belt layer and tire crown are bonded to form a ring. Then, a transfer ring is placed on the expanded tire body to shape it into a green tire. The tire forming machine is a complex system that integrates precision mechanics, automatic control, materials science and process technology. It determines the inherent quality of the tire and is one of the most technologically advanced and costly pieces of equipment in tire manufacturing.

[0003] Chinese Patent Publication No. CN107223090B discloses a radial tire with an improved belt layer structure. The radial tire has an improved belt layer structure, which includes a multi-layer composite laminate with a specific structure. The multi-layer composite laminate includes: a first layer of rubber, which includes a heat-shrinkable circumferential fabric reinforcement, preferably in the form of a monofilament or a monofilament assembly.

[0004] Chinese Patent Publication No. CN114919337B discloses an engineering tire and its manufacturing method, including: step a: obtaining the tire carcass thickness L and tire carcass width D; step b: determining the tire manufacturing parameters based on the data obtained in step a; step c: after determining the tire manufacturing parameters, processing the tire using a processing device.

[0005] The above technical solution has some problems in use. The belt layer composed of a single steel belt layer provides basic rigidity, but lacks restraint. When the molded tire rotates at high speed, the steel belt layer will produce small circumferential deformation and slippage under the action of centrifugal force, resulting in decreased stability.

[0006] Furthermore, the production process of existing radial tires often involves manual inspection or adjustment, which can lead to poor tire performance. It is difficult to determine which step in the production process caused the defective radial tires, resulting in an excessively high defect rate.

[0007] Furthermore, the steel belt layer is used to resist external impacts. The overlap or disconnection of the first and last interfaces can disrupt the uniformity of the tire, causing periodic force fluctuations when the tire rotates. Abrupt changes in the interface position can create stress concentration points, making it extremely easy for delamination, breakage, or even tire blowout to occur. The existing equipment uses a shutdown-based step-by-step analysis method, which seriously affects production efficiency and makes it impossible to detect and resolve equipment problems in a timely manner, resulting in a significant increase in scrap rate.

[0008] Meanwhile, for example, if the steel wire bundle layer is not bonded to the bonding drum during the forming of the steel wire bundle layer, the feeding speed is usually adjusted according to the external output value. However, external factors may cause errors that are difficult to determine. External errors can confuse the difference in feeding speed, resulting in poor precision in the bonding process between the steel wire bundle layer and the bonding drum.

[0009] When the fiber 0° belt layer is wound onto the steel wire belt layer, the slow feeding speed causes excessive binding force, resulting in edge warping of the steel wire belt layer. At the same time, it is easy to misalign and mix with the steel wire belt layer. Edge warping makes the steel wire belt layer have poor impact resistance, resulting in huge stress concentration and fatigue peeling, which may cause tire blowout under high pressure and high temperature.

[0010] Therefore, it is necessary to invent a radial tire with a fiber 0° belt layer and a processing method thereof to solve the above problems. Summary of the Invention

[0011] The purpose of this invention is to provide a radial tire with a fiber 0° belt layer and a processing method thereof, so as to solve the problems mentioned in the background art.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a radial tire with a fiber 0° belt layer structure, the radial tire including a steel belt layer, the outer surface of the steel belt layer being wound with a fiber 0° belt layer, the outer surface of the fiber 0° belt layer being covered with a tire crown, and the inner surface of the steel belt layer being wrapped with a tire carcass.

[0013] A radial tire processing method, wherein the processing method is used to process the radial tire having a fiber 0° belt layer structure, the radial tire is processed using a tire forming machine, the tire forming machine comprising: The conveying module, whose input end is connected to the feeding section, sequentially conveys the steel belt bundle layer, the fiber 0° belt bundle layer and the tire crown; The forming module is located at the input end of the conveying module. It includes a bonding drum. Multiple sets of fan-shaped blocks and elastic covers are installed on the surface of the bonding drum. Multiple pressure sensors are installed between the fan-shaped blocks and the elastic covers. The bonding drum rotates and causes the steel belt bundle layer, the fiber 0° belt bundle layer and the tire crown to be rolled onto the surface of the bonding drum in sequence. An adjustment module is located on top of the forming module. The adjustment module includes a drive device, the output end of which is equipped with a roller shaft for flattening the protrusions of the steel wire bundle layer and smoothing the edge warping of the steel wire bundle layer. A moving module, located on the side of the adjusting module, transfers the preformed embryo from the outer surface of the forming module. An assembly module is located on the side of the moving module. The tire carcass is formed on the outer surface of the assembly module and then combined with the tire embryo transferred from the moving module.

[0014] Preferably, the processing method includes the following steps: S1. Raw material conveying: The steel belt bundle layer, fiber 0° belt bundle layer and tire crown are sequentially conveyed to the forming module through the conveying module; S2, Steel wire bundle layer forming, two layers of steel wire bundles arrive at the forming module respectively and are overlapped and rolled into shape; S3, Fiber 0° belt layer forming, two sets of fiber 0° belt layers arrive at the forming module in sequence and are curled on both sides of the middle of the steel wire belt layer to form; S4. Tire crown forming: The tire crown reaches the forming module, curls up and covers the fiber 0° belt layer to form a tire embryo. S5. Transferring the embryo and assembling it with the carcass: The moving module transfers the embryo, which has been sequentially formed by the coiled steel wire bundle layer, the fiber 0° bundle layer, and the crown on the forming module, to the assembly module and assembling it with the carcass.

[0015] 4. Preferably, S2 includes: S201, The bonding drum rotates to curl and press the steel wire bundle layer onto the bonding drum to form a shape. The roller in the adjustment module moves downward to the initial distance and presses the interface. The inner wall of the steel wire bundle layer applies inward pressure to the bonding drum. S202. Detect the pressure value at the interface of the steel wire bundle layer using the pressure sensor at the interface. If the pressure value detected by the pressure sensor at the interface is equal to the first preset pressure value, then overlap and roll the second layer of steel wire bundle layer on the steel wire bundle layer located on the bonding drum, and repeat the above detection process before proceeding to S3. If the pressure value detected by the pressure sensor at the interface is not equal to the first preset pressure value, then proceed to S203. S203. Detect the pressure value at the interface of the steel wire bundle layer using the pressure sensor at the interface. If the pressure value detected by the pressure sensor at the interface is greater than the first preset pressure value, then execute S204; if the pressure value detected by the pressure sensor at the interface is less than the first preset pressure value, then execute S205.

[0016] Preferably, S2 further includes: S204, adjust the circumference of the outer expansion of the fitting drum, and then perform S202 again; S205. Pressure sensors at other locations detect pressure values ​​at other locations in the steel wire bundle layer. If the pressure value detected by the pressure sensors at other locations is equal to the set first pressure preset value, then execute S206; if the pressure value detected by the pressure sensors at other locations is not equal to the set first pressure preset value, then execute S207. S206. The roller in the adjustment module continues to move downward and presses against the interface. The pressure value detected by the pressure sensor at the interface reaches the set first pressure preset value, and the distance compensation value is fed back to S201 to increase the initial distance of the subsequent roller moving downward. S207. Pressure sensors at other locations detect pressure values ​​at other locations in the steel wire bundle layer. If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value, then execute S208; if the pressure value detected by the pressure sensors at other locations is greater than the first preset pressure value, then execute S209. S208. The bonding drum continues to rotate the flat steel wire bundle layer one revolution, so that the roller shaft flattens the steel wire bundle layer along the surface of the steel wire bundle layer, and S202 is executed again. S209. Clean impurities from the surface of the bonding drum and discard it. The process is now complete.

[0017] Preferably, S207 includes: S2071. The pressure value detected by the pressure sensor at other positions is less than the set first pressure preset value. At the same time, the pressure sensor at other positions detects the pressure value of the steel wire bundle layer during the rolling and forming process on the bonding drum. If the pressure value detected by the pressure sensor at other positions is less than the set first pressure preset value, then execute S2072. If the pressure value detected by the pressure sensor at other positions is partially less than the set first pressure preset value, then execute S2073. S2072. Feedback the pressure difference to the conveying module to analyze the speed difference, and slow down the conveying speed of the subsequent conveying module to the steel wire bundle layer, and execute S208. S2073. Pressure sensors at other locations detect the pressure value of the steel wire bundle layer during the rolling and forming process on the bonding drum. If the pressure value detected by the pressure sensor at other locations is less than the first preset pressure value at a single point, then S208 is executed; if the pressure value detected by the pressure sensor at other locations is less than the first preset pressure value at multiple points, then S2074 is executed. S2074. Shut down for maintenance, recover the steel wire rope bundle layer and analyze the cause. The procedure is now complete.

[0018] Preferably, S3 includes: S301, The rotating bonding drum curls both sets of fiber 0° belt layers onto two steel wire belt layers to form the shape. S302: Detect the pressure value at the outermost edge of the two sets of fiber 0° belt layers of the steel wire belt layer on the side furthest from each other using pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is not equal to the set second pressure preset value, then execute S303; if the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is equal to the set second pressure preset value, then execute S4. S303, the roller moves downward and the drum drives the steel wire bundle layer and the fiber 0° bundle layer to rotate, so that the roller smooths the edge of the steel wire bundle layer along the edge of the steel wire bundle layer. S304. The pressure values ​​at the outermost edges of the two sets of fiber 0° belt layers of the steel wire belt layer are detected again by the pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure values ​​detected by the pressure sensors located at the outermost edges on both sides of the same sector block are equal to the set second pressure preset value, then S305 is executed; if the pressure values ​​detected by the pressure sensors located at the outermost edges on both sides of the same sector block are not equal to the set second pressure preset value, then S306 is executed. S305, Feed back the pressure difference to the conveying module to analyze the speed difference, and accelerate the conveying speed of the subsequent conveying module to the fiber 0° belt layer, and execute S4.

[0019] Preferably, S3 further includes: S306. The pressure values ​​at the outermost edges of the two sets of fiber 0° belt layers of the steel wire belt layer are detected again by the pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is less than the set second pressure preset value, then S307 is executed; if the pressure value detected by the pressure sensor located at the outermost edge on one side of the same sector block is greater than the set second pressure preset value, then S309 is executed. S307. The pressure values ​​at the outermost edges of the two sets of fiber 0° belt layers of the steel wire belt layer are detected again by the pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure values ​​detected by the pressure sensors at the outermost edges on both sides of the same sector block increase and are less than the set second pressure preset value, then S308 is executed; if the pressure values ​​detected by the pressure sensors at the outermost edges on both sides of the same sector block do not increase and are less than the set second pressure preset value, then S309 is executed. S308, the roller axis moves downward to compensate for the distance, and the distance compensation value is fed back to S201 to increase the initial distance of the roller axis moving downward, and S303 is executed again; S309. Stop the machine, adjust the parameters, recover the steel wire belt layer and fiber 0° belt layer, and analyze the cause. The procedure is now complete.

[0020] The technical effects and advantages of this invention are as follows: 1. In this invention, a fiber 0° belt layer is used to tighten the steel belt layer, ensuring the radial tire's excellent impact resistance and durability, as well as its extremely high strength and fatigue resistance. This avoids the steel belt layer from undergoing minor circumferential deformation and slippage under centrifugal force, improving the stability of the radial tire during high-speed rotation. In the production process of radial tires, automatic detection or adjustment is often used to determine which step in the production process caused the radial tire to be defective, thereby reducing the radial tire defect rate.

[0021] 2. In this invention, the misalignment of the steel belt layer is ensured to guarantee the uniformity of the radial tire and prevent periodic force fluctuations during tire rotation. This also ensures that the sudden stress at the radial tire interface is uniform, allowing the tire to better withstand repeated flexing and impact during use. Specific causes are analyzed to ensure the production efficiency of radial tires and to promptly identify and resolve equipment problems.

[0022] 3. In this invention, the roller pressing makes the steel wire bundle layer bond with the bonding drum. The feeding speed is adjusted in real time according to the external output value to ensure the accuracy of subsequent processing, thereby improving the processing efficiency of the steel wire bundle layer. It also judges whether the error is caused by external factors and deals with it in time to ensure bonding accuracy.

[0023] 4. In this invention, when the fiber 0° belt layer is rolled onto the steel wire belt layer for forming, it is determined whether the binding force is too large when the fiber 0° belt layer is wound onto the steel wire belt layer, causing the edge of the steel wire belt layer to warp. This avoids the huge stress concentration and fatigue peeling caused by edge warping, which can lead to tire blowout. It also promptly addresses the misalignment between the steel wire belt layers, judges and resolves roller wear, and accurately resolves edge warping. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the radial tire structure of the present invention; Figure 2 This is a schematic diagram of the tire forming machine of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a flowchart of the radial tire processing method of the present invention; Figure 5 This is a flowchart of the steel wire strand layer forming process of the present invention; Figure 6 This is a flowchart of the adjustment judgment process for the adjustment module of the present invention; Figure 7 This is a flowchart of the fiber 0° belt layer forming process of the present invention.

[0025] In the diagram: 1. Steel belt bundle layer; 2. Fiber 0° belt bundle layer; 3. Tire crown; 4. Tire body; 5. Conveying module; 6. Forming module; 7. Adjusting module; 8. Moving module; 9. Assembly module. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1 In the use of radial tires with fiber 0° belt layers and their processing methods, the belt layer composed of a single steel belt layer 1 provides basic rigidity but lacks restraint. At high speeds, the steel belt layer 1 will produce slight circumferential deformation and slippage under the action of centrifugal force, causing the steering wheel to feel unstable, the vehicle's center of gravity to be blurred, and high-speed stability to decrease. Moreover, in the production process of existing radial tires, manual inspection or adjustment is often used, which is not stable. It is difficult to determine which step in the production process caused the defective radial tires, resulting in an excessively high defect rate.

[0028] This invention provides, for example Figure 1 The radial tire shown has a fiber 0° belt layer structure. The radial tire includes a steel belt layer 1, a fiber 0° belt layer 2 wrapped around the outer surface of the steel belt layer 1, a tire crown 3 covering the outer surface of the fiber 0° belt layer 2, and a tire carcass 4 wrapped inside the steel belt layer 1.

[0029] This invention provides, for example Figure 2-4 The radial tire processing method shown is used to process radial tires with a fiber 0° belt layer structure. The radial tire is processed using a tire forming machine, which includes: a conveying module 5, whose input end is connected to the feeding section, sequentially conveying the steel belt layer 1, the fiber 0° belt layer 2, and the tire crown 3; and a forming module 6, which is located at the input end of the conveying module 5, including a bonding drum. Multiple sets of fan-shaped blocks and elastic covers are mounted on the surface of the bonding drum. Multiple pressure sensors are installed between the fan-shaped blocks and the elastic covers. The bonding drum rotates and causes the steel belt... The steel wire belt layer 1, the fiber 0° belt layer 2, and the tire crown 3 are sequentially rolled onto the surface of the bonding drum; the adjustment module 7 is located on top of the forming module 6, and the adjustment module 7 includes a drive device, the output end of which is equipped with a roller shaft for flattening the protrusions of the steel wire belt layer 1 and smoothing the edge warping of the steel wire belt layer 1; the moving module 8 is located on the side of the adjustment module 7 and transfers the tire blank that has been formed on the outer surface of the forming module 6; the assembly module 9 is located on the side of the moving module 8, and the tire body 4 is combined with the tire blank transferred by the moving module 8 after it is formed on the outer surface of the assembly module 9.

[0030] The processing method includes the following steps: S1. Raw material conveying: Steel belt bundle layer 1, fiber 0° belt bundle layer 2 and tire crown 3 are sequentially conveyed to forming module 6 through conveying module 5.

[0031] S2, steel wire bundle layer 1 is formed, and the two steel wire bundle layers 1 reach the forming module 6 respectively and are overlapped and rolled into shape.

[0032] S3, fiber 0° belt layer 2 is formed, and two sets of fiber 0° belt layers 2 arrive at the forming module 6 in sequence and are curled on both sides of the middle part of the steel wire belt layer 1.

[0033] S4, the crown 3 is formed. The crown 3 reaches the forming module 6 and is curled and covered on the fiber 0° belt layer 2 to form a fetal embryo.

[0034] S5. The embryo is transferred and combined with the body 4. The moving module 8 transfers the embryo formed by the sequentially coiled steel wire belt layer 1, fiber 0° belt layer 2 and crown 3 on the forming module 6 to the assembly module 9 and combines it with the body 4.

[0035] In summary, a radial tire consists of, from the inside out, the tire body 4, steel belt layer 1, fiber 0° belt layer 2, and tire crown 3. The steel belt layer 1 in a radial tire uses high-elongation steel cords arranged at an angle of approximately 18-22 degrees, with two layers distributed and symmetrically intersecting the two layers, providing excellent impact resistance and durability. The fiber 0° belt layer 2 uses ultra-high molecular weight polyethylene fiber or aromatic polyamide fiber, which has extremely high strength, weight ratio, and excellent impact and fatigue resistance. It is tightly wrapped between the steel belt layer 1 and the tire crown at a zero or near-zero degree (approximately 0-1 degree), providing a hoop effect that tightly binds the steel belt layer 1.

[0036] During the forming of a single tire, the steel belt layer 1, the fiber 0° belt layer 2, and the tire crown 3 are sequentially cut into strips conforming to the circumference of the layer by the fixed-length cutting device on the conveying module 5. After passing the visual inspection device, the strips are conveyed to the forming module 6. According to the tire specifications, the bonding drum is controlled by the internal drive system of the bonding drum, which consists of multiple sets of fan-shaped blocks and surface-mounted elastic covers. The bonding drum expands to the precise diameter required by the steel belt layer 1 and is mechanically locked. The bonding drum in the forming module 6 is started to rotate. When the material is about to reach the bonding drum, the head end holder on the bonding drum immediately moves to clamp the beginning of the material. Since the head end is fixed, the rotation of the bonding drum pulls the entire strip of material out of the conveying module 5 for curling and forming.

[0037] The steel wire bundle layer 1 first reaches the bonding drum and is rolled into shape. At the same time, the pressure value inside the bonding drum is detected. The first and last ends of the steel wire bundle layer 1 are connected by a bevel joint, that is, the two ends are perfectly matched to form a smooth transition area, avoiding the overlap of the steel wire bundle layer 1 to form a local thickening and rigidity change area. The adjustment module 7 moves down to press the interface, and the pressure sensor determines whether there is a problem and the cause. The problem is solved or the material is scrapped and reshaped with the help of the adjustment module 7.

[0038] After confirming there are no issues, the steel wire harness layer 1 continues to be formed. Then, the fiber 0° harness layer 2 arrives and is wound and rolled onto the steel wire harness layer 1. A pressure sensor is used to determine if any problems occur and their causes. If the problem is resolved or the tire is scrapped and re-formed, the subsequent forming process continues. Finally, the tire crown 3 arrives and is rolled onto the fiber 0° harness layer 2. At this point, the bonding drum shrinks and separates from the tire carcass composed of the steel wire harness layer 1, the fiber 0° harness layer 2, and the tire crown 3. The drive system controls the moving module 8 to be fitted onto the surface of the tire carcass. Vacuum adsorption is used to make the outer surface of the tire carcass adhere to the inside of the moving module 8. After the tire body 4 is formed, the moving module 8 drives the tire carcass to be assembled with the tire body 4 in the assembly module 9 to form a green tire. The tire is then subjected to a vulcanization device for tire forming.

[0039] Example 2 Based on the above embodiments, the steel belt layer 1 is mainly used to resist external impacts. If there are problems with the interface at the beginning and end of the steel belt layer 1, it will cause the uniformity of the tire to be damaged and cause periodic force fluctuations when the tire rotates. The sudden change in the interface position forms a stress concentration point. When the tire is in use, under repeated flexing and impact, this position is very prone to delamination or breakage, causing bulges or even tire blowouts. Moreover, the existing device is difficult to analyze the specific cause, and therefore cannot automatically adjust. The method of stopping the machine to analyze step by step seriously affects the production efficiency, and the inability to detect and solve equipment problems in time leads to a significant increase in the scrap rate.

[0040] like Figure 5 The radial tire manufacturing method shown, S2 includes: S201, the bonding drum rotates to curl and press the steel wire bundle layer 1 onto the bonding drum to form a shape. After the bonding drum starts, it rotates at a constant angular velocity of 30-45 r / min. The steel wire bundle layer 1 is accurately introduced into the surface of the bonding drum through the guide roller of the conveying module 5. The elastic cover is compressed and generates 0.3-0.5 mm, and performs deformation in S208 to ensure that the bundle layer is tightly bonded to the drum surface. The oblique joint is controlled at 1.5-2.0 mm. The roller in the adjusting module 7 moves downward to the initial distance and presses the joint. The inner wall of the steel wire bundle layer 1 applies inward pressure to the bonding drum.

[0041] S202. The pressure value at the interface of the steel wire bundle layer 1 is detected by the pressure sensor at the interface. The pressure sensor at the interface has a detection accuracy of ±0.01MPa and is evenly distributed on the sector block. The detection time lasts for 3 seconds, and the average value of the collected data is taken. If the pressure value detected by the pressure sensor at the interface is equal to the first preset pressure value, that is, the steel wire bundle layer 1 is aligned at the oblique joint interface, then the second layer of steel wire bundle layer 1 is overlapped and rolled on the steel wire bundle layer 1 located on the bonding drum, and the above detection process is repeated before proceeding to S3; if the pressure value detected by the pressure sensor at the interface is not equal to the first preset pressure value, then proceeding to S203.

[0042] S203. The pressure sensor detects the pressure value at the interface of the steel wire bundle layer 1. If the pressure value detected by the pressure sensor at the interface is greater than the first preset pressure value, that is, the wear of the elastic cover layer on the surface of the mating drum causes the interface of the steel wire bundle layer 1 to overlap, then S204 is executed; if the pressure value detected by the pressure sensor at the interface is less than the first preset pressure value, that is, there is a protrusion in the steel wire bundle layer 1 causing the interface of the steel wire bundle layer 1 to break, then S205 is executed.

[0043] S204, the bonding drum is expanded to compensate for the circumference, and S202 is executed again. The bonding drum is controlled by the drive system to expand the sector block. The expansion amount is calculated based on the pressure difference. For every 0.01MPa exceeding the preset value, the expansion is 0.05mm. The maximum expansion amount does not exceed 3mm. After compensation, it is left to stand for 2 seconds, and the sector block drives the steel wire bundle layer to expand until the steel wire bundle layer 1 interface is completed.

[0044] S205. Pressure sensors at other locations detect pressure values ​​at other locations of the steel wire rope bundle layer 1. If the pressure value detected by the pressure sensors at other locations is equal to the preset first pressure value, i.e., the roller is worn, then execute S206; if the pressure value detected by the pressure sensors at other locations is not equal to the preset first pressure value, then execute S207.

[0045] S206, the roller in the adjustment module 7 continues to move downward and presses against the interface. The pressure value detected by the pressure sensor at the interface reaches the set first pressure preset value, and the distance compensation value is fed back to S201 to increase the initial distance of the subsequent roller moving downward.

[0046] S207. Pressure sensors at other locations detect the pressure values ​​at other locations of the steel wire bundle layer 1. If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value, that is, the steel wire bundle layer 1 is not bonded to the bonding drum during the forming of the steel wire bundle layer 1, resulting in the separation of the interface of the steel wire bundle layer 1, then S208 is executed; if the pressure value detected by the pressure sensors at other locations is greater than the first preset pressure value, that is, there are impurities on the surface of the bonding drum, causing the steel wire bundle layer 1 to not bond to the bonding drum, resulting in the separation of the interface of the steel wire bundle layer 1, then S209 is executed.

[0047] S208. The bonding drum continues to rotate the flat steel wire bundle layer 1 for one revolution, so that the roller shaft flattens the steel wire bundle layer 1 along the surface of the steel wire bundle layer 1 to ensure that the steel wire bundle layer 1 has uniform impact resistance, and then S202 is executed again.

[0048] S209. Clean the impurities on the surface of the mating drum and scrap it for reprocessing. The protrusions of the steel wire bundle layer 1 and the impurities form stress concentration points, which can easily cause bulges or even tire blowouts.

[0049] Example 3 Based on the above embodiments, when the steel wire bundle layer 1 is formed, the steel wire bundle layer 1 fails to adhere to the bonding drum, causing the interface of the steel wire bundle layer 1 to break. Adjusting the feeding speed according to the external output value has errors, requiring manual real-time monitoring of changes. It may also be caused by external factors, such as external vibration or impact. The error of the conveying module 5 is difficult to determine. External errors can confuse the difference in feeding speed, which needs to be confirmed in time. Even after pressing to resolve the issue, it still occurs later. Frequent pressing and restoration operations affect the efficiency of the tire forming machine, resulting in poor accuracy in the bonding process between the steel wire bundle layer 1 and the bonding drum.

[0050] like Figure 6 The radial tire manufacturing method shown in S207 includes: S2071. If the pressure value detected by the pressure sensors at other positions is less than the first preset pressure value, and the pressure sensors at other positions detect the pressure value of the steel wire bundle layer 1 during the rolling and forming process on the bonding drum, and if the pressure value detected by the pressure sensors at other positions is less than the first preset pressure value, that is, the steel wire bundle layer 1 is conveyed too fast and the whole is not bonded to the bonding drum, then S2072 is executed; if the pressure value detected by the pressure sensors at other positions is partially less than the first preset pressure value, that is, the speed of the steel wire bundle layer 1 changes suddenly during the conveying process and the steel wire bundle layer 1 is partially not bonded to the bonding drum, then S2073 is executed.

[0051] S2072, Feedback the pressure difference to the conveying module 5 to analyze the speed difference, and slow down the conveying speed of the subsequent conveying module 5 to the steel wire rope bundle layer 1. The speed of the subsequent conveying module 5 is automatically reduced by 10-15%. At the same time, a signal that the speed is too fast is fed back to the PLC control system of the conveying module 5 and adjusted accordingly, and S208 is executed.

[0052] S2073. Pressure sensors at other locations detect the pressure value of the steel wire bundle layer 1 during the rolling and forming process on the bonding drum. If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value at a single point, that is, the conveying module 5 is accidentally subjected to external impact but it does not affect subsequent operations, and S208 is executed; if the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value at multiple points, that is, the conveying module 5 is subjected to external impact multiple times, then S2074 is executed.

[0053] S2074. Shutdown and maintenance: The steel wire rope bundle layer 1 is recovered and the cause is analyzed. The raw material conveying is cut off. The unqualified steel wire rope bundle layer 1 is recovered and analyzed. The shutdown time, pressure curve and equipment operating parameters are recorded. The technical personnel will investigate the impact source, such as loose conveyor roller bearings, external vibration, etc.

[0054] Example 4 Based on the above embodiments, when the fiber 0° belt layer 2 is rolled onto the steel wire belt layer 1 for forming, the fiber 0° belt layer 2 is conveyed too slowly. When the fiber 0° belt layer 2 gradually wraps around the steel wire belt layer 1, the binding force on the steel wire belt layer is too great, causing the edge of the steel wire belt layer 1 to warp. It is also easy for it to be misaligned and mixed with the two layers of steel wire belt layer 1. The specific cause cannot be determined, which may lead to the problem continuing to occur. As a result, the quality of the subsequent fiber 0° belt layer 2 and steel wire belt layer 1 is poor, resulting in poor impact resistance of the steel wire belt layer 1. The edge warping is equivalent to the initial peeling point. During the tire rolling process, huge stress concentration and fatigue peeling will occur at this point, which may cause tire blowout under high pressure and high temperature.

[0055] like Figure 7 The radial tire manufacturing method shown, S3 includes: S301. The rotating drum rolls both sets of fiber 0° belt layers 2 onto the two steel wire belt layers 1 to form the belt. The two sets of fiber 0° belt layers 2 are precisely aligned with the steel wire belt layers 1, with an alignment error of ≤±1mm. The winding tension is controlled at 3-5N / cm to ensure that the belt layers are wrinkle-free and slack. The overlap of the fiber 0° belt layers 2 is 1.0-1.5mm.

[0056] S302: The pressure value at the outermost edge of the two sets of fiber 0° belt layers 2 of the steel wire belt layer 1, which are far apart from each other, is detected by pressure sensors located at the outermost edges on both sides of the same sector block. The preset value is 0.4±0.04MPa. If the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is not equal to the preset second pressure value, then S303 is executed; if the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is equal to the preset second pressure value, then S4 is executed.

[0057] S303, the roller moves downward and fits against the drum, causing the steel wire bundle layer 1 and the fiber 0° bundle layer 2 to rotate, so that the roller smooths the edge of the steel wire bundle layer 1 along the edge of the steel wire bundle layer 1, and the downward pressing distance is certain so that the warping amount is ≤0.3mm.

[0058] S304. The pressure value at the outermost edge of the two sets of fiber 0° belt layers 2 of the steel wire belt layer 1 on the opposite side is detected again by the pressure sensor located at the outermost edge on both sides of the same sector block. The pressure value is checked against the preset second pressure value. If the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block is equal to the preset second pressure value, that is, the fiber 0° belt layer 2 is conveying too slowly, resulting in excessive pressure on the steel wire belt layer 1 at the binding position of the fiber 0° belt layer 2, causing the outermost edge of the upper steel wire belt layer 1 to warp, which can be restored by pressing and smoothing external force, then proceed to S305. If the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block is not equal to the preset second pressure value, then proceed to S306.

[0059] S305, Feed back the pressure difference to the conveying module 5 to analyze the speed difference, and accelerate the conveying speed of the subsequent conveying module 5 to the fiber 0° belt layer 2, and execute S4.

[0060] S306. The pressure values ​​at the outermost edges of the two sets of fiber 0° belt layers 2 of the steel wire belt layer 1 on opposite sides are detected again by the pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is less than the set second pressure preset value, then S307 is executed. If the pressure value detected by the pressure sensor located at the outermost edge on one side of the same sector block is greater than the set second pressure preset value, that is, the fiber 0° belt layer 2 has shifted and wrapped around the outermost edge of the steel wire belt layer 1, which increases the edge pressure of the steel wire belt layer 1, causes the fiber 0° belt layer 2 to shift, and makes it difficult for the fiber 0° belt layer 2 to control the slippage of the steel wire belt layer 1, thus failing to guarantee the stability performance of the formed tire, then S309 is executed.

[0061] S307. The pressure value at the outermost edge of the two sets of fiber 0° belt layers 2 of the steel wire belt layer 1, which are far apart from each other, is detected again by the pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure value detected by the pressure sensors at the outermost edges on both sides of the same sector block increases and is less than the set second pressure preset value, that is, the roller is worn and only a small-scale smoothing of the edge of the steel wire belt layer 1 is performed, then proceed to S308; if the pressure value detected by the pressure sensors at the outermost edges on both sides of the same sector block does not increase and is less than the set second pressure preset value, that is, the two steel wire belt layers are misaligned and the resulting edge warping cannot be restored, thus affecting the tire quality, then proceed to S309.

[0062] S308, the roller axis moves downward to compensate for the distance, and the distance compensation value is fed back to S201 to increase the initial distance of the roller axis moving downward, and S303 is executed again.

[0063] S309. Stop the machine and adjust the parameters. Recover and disassemble the formed steel wire belt layer 1 and fiber 0° belt layer 2 to analyze the cause.

[0064] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A radial tire having a fiber 0° belt layer structure, characterized in that, The radial tire includes a steel belt layer (1), the outer surface of which is wrapped with a fiber 0° belt layer (2), the outer surface of which is covered with a tire crown (3), and the inner surface of which is wrapped with a tire carcass (4).

2. A method for processing radial tires, said method being used to process radial tires having a fiber 0° belt layer structure as described in claim 1, characterized in that, The radial tire is processed using a tire forming machine, which includes: The conveying module (5) has its input end connected to the feeding section, and sequentially conveys the steel belt bundle layer (1), the fiber 0° belt bundle layer (2) and the tire crown (3). The forming module (6) is located at the input end of the conveying module (5). It includes a bonding drum, on which multiple sets of fan-shaped blocks and elastic covers are installed. Multiple pressure sensors are installed between the fan-shaped blocks and the elastic covers. The bonding drum rotates and causes the steel wire belt layer (1), the fiber 0° belt layer (2), and the tire crown (3) to be rolled onto the surface of the bonding drum in sequence. Adjustment module (7), which is located on top of forming module (6), includes a drive device, the output end of which is equipped with a roller for flattening the protrusions of steel wire bundle layer (1) and smoothing the edge warping of steel wire bundle layer (1); The moving module (8), which is located on the side of the adjusting module (7), transfers the preform already formed on the outer surface of the forming module (6); Assembly module (9) is located on the side of the moving module (8). The tire body (4) is formed on the outer surface of the assembly module (9) and combined with the tire embryo transferred by the moving module (8).

3. The radial tire processing method according to claim 2, characterized in that, The processing method includes the following steps: S1. Raw material conveying: Steel wire belt layer (1), fiber 0° belt layer (2) and tire crown (3) are conveyed sequentially to forming module (6) through conveying module (5). S2, steel wire bundle layer (1) is formed, and the two steel wire bundle layers (1) reach the forming module (6) respectively to overlap and be rolled into shape; S3, Fiber 0° belt layer (2) is formed, and two sets of fiber 0° belt layers (2) arrive at the forming module (6) in sequence and are rolled on both sides of the middle part of the steel wire belt layer (1) to form; S4, the crown (3) is formed. The crown (3) reaches the forming module (6) and is curled and covered on the fiber 0° belt layer (2) to form a fetal embryo. S5. The embryo is transferred and combined with the body (4). The moving module (8) transfers the embryo formed by the sequentially rolled steel wire belt layer (1), fiber 0° belt layer (2) and crown (3) on the forming module (6) to the assembly module (9) and combines it with the body (4).

4. The radial tire processing method as described in claim 3, characterized in that: S2 includes: S201, The bonding drum rotates to curl and press the steel wire bundle layer (1) onto the bonding drum to form a shape. The roller in the adjustment module (7) moves downward to the initial distance and presses the interface. The inner wall of the steel wire bundle layer (1) applies inward pressure to the bonding drum. S202. Detect the pressure value at the interface of the steel wire bundle layer (1) by the pressure sensor at the interface. If the pressure value detected by the pressure sensor at the interface is equal to the first preset pressure value, then overlap and roll the second layer of steel wire bundle layer (1) on the steel wire bundle layer (1) located on the bonding drum, and repeat the above detection process before executing S3; if the pressure value detected by the pressure sensor at the interface is not equal to the first preset pressure value, then execute S203. S203. Detect the pressure value at the interface of the steel wire bundle layer (1) by the pressure sensor at the interface. If the pressure value detected by the pressure sensor at the interface is greater than the first preset pressure value, then execute S204; if the pressure value detected by the pressure sensor at the interface is less than the first preset pressure value, then execute S205.

5. The radial tire processing method as described in claim 4, characterized in that: S2 also includes: S204, adjust the circumference of the outer expansion of the fitting drum, and then perform S202 again; S205. Pressure sensors at other locations detect the pressure value of the steel wire bundle layer (1). If the pressure value detected by the pressure sensors at other locations is equal to the first preset pressure value, then execute S206; if the pressure value detected by the pressure sensors at other locations is not equal to the first preset pressure value, then execute S207. S206, The roller in the adjustment module (7) continues to move downward and presses against the interface. The pressure value detected by the pressure sensor at the interface reaches the first preset pressure value, and the distance compensation value is fed back to S201 to increase the initial distance of the subsequent roller moving downward. S207. Pressure sensors at other locations detect pressure values ​​at other locations of the steel wire bundle layer (1). If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value, then execute S208; if the pressure value detected by the pressure sensors at other locations is greater than the first preset pressure value, then execute S209. S208. The bonding drum drives the flat steel wire bundle layer (1) to continue rotating one revolution, so that the roller shaft flattens the steel wire bundle layer (1) along the surface of the steel wire bundle layer (1), and S202 is executed again. S209. Clean impurities from the surface of the bonding drum and discard it. The process is now complete.

6. The radial tire processing method as described in claim 5, characterized in that: S207 includes: S2071. The pressure value detected by the pressure sensor at other positions is less than the first preset pressure value. At the same time, the pressure sensor at other positions detects the pressure value of the steel wire bundle layer (1) during the rolling and forming process on the bonding drum. If the pressure value detected by the pressure sensor at other positions is less than the first preset pressure value, then S2072 is executed. If the pressure value detected by the pressure sensor at other positions is partially less than the first preset pressure value, then S2073 is executed. S2072, Feed back the pressure difference to the conveying module (5) to analyze the speed difference, and slow down the conveying speed of the subsequent conveying module (5) to the steel wire bundle layer (1), and execute S208; S2073. Pressure sensors at other locations detect the pressure value of the steel wire bundle layer (1) during the rolling and forming process on the bonding drum. If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value at a single point, then S208 is executed. If the pressure value detected by the pressure sensors at other locations is less than the first preset pressure value at multiple points, then S2074 is executed. S2074, Shut down for maintenance, recover the steel wire rope bundle layer (1) and analyze the cause, the step ends.

7. The radial tire processing method as described in claim 3, characterized in that: S3 includes: S301, The bonding drum rotates to roll both sets of fiber 0° belt layers (2) onto the two steel wire belt layers (1) to form the shape; S302: Detect the pressure value at the outermost edge of the two sets of fiber 0° belt layers (2) of the steel wire belt layer (1) that are far apart from each other by pressure sensors located at the outermost edges on both sides of the same sector block. If the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is not equal to the set second pressure preset value, then execute S303; if the pressure value detected by the pressure sensors located at the outermost edges on both sides of the same sector block is equal to the set second pressure preset value, then execute S4. S303, the roller shaft moves downward and fits the drum to drive the steel wire bundle layer (1) and the fiber 0° bundle layer (2) to rotate, so that the roller shaft smooths the edge of the steel wire bundle layer (1) along the edge of the steel wire bundle layer (1); S304. The pressure value at the outermost edge of the two sets of fiber 0° belt layers (2) of the steel wire belt layer (1) is detected again by the pressure sensor located at the outermost edge on both sides of the same sector block. If the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block is equal to the set second pressure preset value, then S305 is executed; if the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block is not equal to the set second pressure preset value, then S306 is executed. S305, Feed back the pressure difference to the conveying module (5) to analyze the speed difference, and speed up the conveying speed of the subsequent conveying module (5) to the fiber 0° belt layer (2), and execute S4.

8. The radial tire processing method as described in claim 7, characterized in that: S3 also includes: S306. The pressure value at the outermost edge of the two sets of fiber 0° belt layers (2) of the steel wire belt layer (1) is detected again by the pressure sensor located at the outermost edge on both sides of the same sector block. If the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block is less than the set second pressure preset value, then S307 is executed; if the pressure value detected by the pressure sensor located at the outermost edge on one side of the same sector block is greater than the set second pressure preset value, then S309 is executed. S307. The pressure value at the outermost edge of the two sets of fiber 0° belt layers (2) of the steel wire belt layer (1) is detected again by the pressure sensor located at the outermost edge on both sides of the same sector block. If the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block increases and is less than the set second pressure preset value, then S308 is executed; if the pressure value detected by the pressure sensor located at the outermost edge on both sides of the same sector block does not increase and is less than the set second pressure preset value, then S309 is executed. S308, the roller axis moves downward to compensate for the distance, and the distance compensation value is fed back to S201 to increase the initial distance of the roller axis moving downward, and S303 is executed again; S309, Stop the machine and adjust the parameters. Recover the steel wire belt layer (1) and the fiber 0° belt layer (2) and analyze the cause. The step ends.

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