Tire with multi-layer continuous woven carcass ply structure

Abstract

The invention discloses a tire with a multi-layer continuously-woven carcass ply structure, and relates to the technical field of tires, the tire comprises a bead ring structure, a bead filler layer and the multi-layer continuously-woven carcass ply structure, and the bead ring structure and the bead filler layer are both arranged in the multi-layer continuously-woven carcass ply structure; the multi-layer continuously-woven tire body cord fabric structure comprises n layers of continuously-woven tire body cord fabric units, the first layer of continuously-woven tire body cord fabric unit is located in the center, the second layer of continuously-woven tire body cord fabric unit is wound and attached to the first layer of continuously-woven tire body cord fabric unit attached with an adhesive layer, and so on, and all the layers of continuous woven carcass ply units are attached in sequence. The multi-layer continuous woven tire body cord fabric structure can effectively improve the rigidity and the impact resistance of the tire, greatly improve the bearing capacity, the impact resistance and the high-speed performance of the tire, prolong the service life of the tire, effectively solve the breakpoint problem of a traditional tire body cord fabric layer and enable the cord threads to continuously transmit loads.

Description

Technical Field

[0001] The invention relates to the technical field of tires, in particular to a tire with a multi-layer continuously woven carcass cord layer structure. Background Art

[0002] Traditional radial tires have only one carcass ply layer, which has good lateral flexibility, but is weak in withstanding impact and large loads, and is easily damaged or even destroyed under harsh road conditions. Tires with multi-layer carcass ply structures have higher rigidity and impact resistance, which allows them to have a longer service life under harsh road conditions, such as aviation tires and engineering tires.

[0003] The carcass ply of a traditional tire is made of cord and rubber through calendering, cutting and splicing. A series of cutting points will be generated at the cutting point of the ply (such as Figure 1 As shown in the figure, the tire body has an interface bonding defect in the cut-off point area. During the use of the tire, the cord cut-off point area and the rubber have a severe shear behavior, which leads to holes and cracks in this area in the early use, greatly reducing the service life of the tire. The discontinuity of the cord in this area seriously restricts the load-bearing capacity of the tire.

[0004] Therefore, how to provide a tire with a multi-layer continuously woven carcass cord layer structure has become a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0005] In order to overcome the defects brought by the existing carcass cord layer manufacturing process and improve the high-speed performance, impact resistance and load capacity of the tire, the present invention proposes a tire with a multi-layer continuously woven carcass cord layer structure. The tire has a multi-layer continuously woven carcass cord layer, which can suppress the standing wave phenomenon formed by the tire under high-speed conditions with large loads, thereby improving the high-speed performance, impact resistance and load capacity of the tire and greatly increasing the service life of the tire.

[0006] To achieve the above-mentioned object, the present invention provides a tire with a multi-layer continuous woven carcass ply structure, comprising a wire bead structure, an apex rubber layer and a multi-layer continuous woven carcass ply structure, wherein the wire bead structure and the apex rubber layer are both arranged inside the multi-layer continuous woven carcass ply structure, and the apex rubber layer is coated on the outside of the wire bead structure;

[0007] The multi-layer continuous woven carcass ply structure includes n layers of continuous woven carcass ply units, the first layer of continuous woven carcass ply units is located at the center of the multi-layer continuous woven carcass ply structure, the second layer of continuous woven carcass ply units is wound and bonded to the first layer of continuous woven carcass ply units with an adhesive layer, and so on, each layer of continuous woven carcass ply units is bonded in sequence, wherein the first layer of continuous woven carcass ply units is a single-layer continuous woven carcass ply, and the second to n-layer continuous woven carcass ply units are inner and outer double-layer continuous woven carcass ply units, and finally a multi-layer continuous woven carcass ply structure with 2n-1 layers of continuous woven carcass ply is formed in the radial direction of the tire.

[0008] It also includes a shoulder rubber pad layer, a sidewall rubber layer and a tread rubber protection layer. The inner side of the multi-layer continuous woven carcass cord layer structure is provided with an airtight layer, and the outer side of the multi-layer continuous woven carcass cord layer structure is provided with a multi-layer belt cord layer structure; the shoulder rubber pad layer, the sidewall rubber layer and the tread rubber protection layer are all bonded to the multi-layer continuous woven carcass cord layer structure, and the multi-layer belt cord layer structure is attached with a tread lower layer, a tread upper layer and a cap layer.

[0009] Furthermore, the first layer of continuously woven carcass cord layer unit is a first layer of carcass cord tube formed by continuously and evenly covering and zigzag-shapedly arranged cords on the apex rubber layer and the wire ring structure after being coated with rubber.

[0010] Furthermore, the 2nd to nth layer of continuously woven carcass cord layer units are formed by continuously and evenly winding in a zigzag shape at a certain tension and angle on the outer surface of the first layer of continuously woven carcass cord layer unit with an adhesive layer after the cords are coated with rubber, and no spacing is retained between each section of the cords. At the same time, the 2nd to nth layer of carcass cord tubes are formed by calendering each layer of the cords using an extrusion roller.

[0011] Furthermore, the angle between the arrangement direction of a single cord of the single-layer continuously woven carcass ply in the multi-layer continuously woven carcass ply structure and the tire axial direction is 0.1° to 3° or -0.1° to -3°.

[0012] Furthermore, the inner angles of the single cords of the inner and outer double-layer continuous woven carcass cord layers in the multi-layer continuous woven carcass cord layer structure are parallel or symmetrical to the outer angles, the dividing point between the inner and outer parts is located at the bottom center of the wire ring, and the angle between the single cord arrangement direction and the tire axial direction is 0.1° to 3° or -0.1° to -3°.

[0013] Furthermore, after the rubber-coated cords in the multi-layer continuously woven carcass cord layer structure are arranged in a continuous zigzag shape, the starting point and the end point are connected by butt-jointing or overlapping.

[0014] Furthermore, the positions of the connection points generated by the continuous zigzag arrangement of the cords in the multi-layer continuous woven carcass ply structure after rubber coating are determined by a finite element method or a tension calculation formula;

[0015] The stress distribution of a tire with a multi-layer continuous woven carcass ply structure under inflation and load conditions was calculated using the finite element method, and the position with the minimum cord tension was selected as the position of the cord connection point.

[0016] Furthermore, the thickness of the zigzag-shaped rubber-coated cords in the multi-layer continuously woven carcass ply structure is 0.5-2 times the cord diameter D.

[0017] Furthermore, the multi-layer continuously woven carcass cord layer structure adopts a single rubber-coated cord or a cord belt composed of multiple rubber-coated cords, which is continuously and evenly arranged in a zigzag shape on the apex rubber layer and the wire ring structure to form a carcass cord tube.

[0018] Furthermore, the cords in the cord belt composed of the plurality of rubber-coated cords are evenly distributed, and the number of the cords is 2 to 8; the width of the rubber-coated cord belt is 1 to 20 mm.

[0019] Furthermore, the cords used in the multi-layer continuous woven carcass ply structure are steel wires, nylon, aramid, a blend of nylon and aramid, polyester or carbon fiber materials.

[0020] Furthermore, the continuously woven carcass cord ply units are bonded together;

[0021] Alternatively, the cords are connected by an adhesive layer, wherein the thickness H of the adhesive layer is greater than the diameter D of the cords.

[0022] Further, the multi-layer continuous woven carcass ply structure is made by arranging one cord or cord tape;

[0023] Or each layer of continuous woven carcass cord layer is arranged in a zigzag shape, and the starting point positions of each layer of the continuous woven carcass cord layer unit are evenly distributed at an angle of 360°.

[0024] Furthermore, the number of layers of the continuously woven carcass ply units in the multi-layer continuously woven carcass ply structure is 2 to 10 layers.

[0025] The beneficial effects of the present invention are:

[0026] The present invention discloses a tire with a multi-layer continuous woven carcass cord layer structure, wherein the multi-layer continuous woven carcass cord layer structure eliminates the continuous cutting points generated by the traditional carcass cord layer through the manufacturing processes of calendering, cutting, splicing, etc., avoids the situation that the cutting points cannot be effectively bonded with the rubber due to the lack of coating, prevents the occurrence of holes and cracks at the cutting points during the tire running, and prevents the tire from being damaged in the form of cord withdrawal when the tire is subjected to impact load, thereby improving the tire's load-bearing capacity and service life. Not only does it improve the rigidity and impact resistance of the tire, it also suppresses the standing wave phenomenon generated by the tire when it rotates at high speed, and increases the tire's service life when it is running at high speed.

[0027] The tire with a multi-layer continuously woven carcass cord layer structure proposed in the present invention can be composed of a single cord coated with rubber, or a cord belt composed of multiple cords coated with rubber, which is continuously woven and continuously and evenly arranged on a apex rubber layer and a wire ring structure to form a carcass cord tube, thereby establishing a stable and continuous force transmission structure, strengthening the force transmission between the carcass and the wire ring structure, improving the stiffness of the cord layer, reducing the weight of the tire, and improving the manufacturing efficiency of the carcass cord layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 Schematic diagram of the cross-sectional structure of a traditional tire.

[0030] Figure 2 The present invention is a schematic structural diagram of a tire having a multi-layer continuously woven carcass cord layer structure.

[0031] Figure 3 It is a schematic diagram of the structure of a single-layer continuously woven carcass cord layer in the present invention.

[0032] Figure 4 It is a schematic diagram of the structure of the inner and outer double-layer continuously woven carcass cord layers in the present invention.

[0033] Figure 5 It is a schematic diagram of the cord arrangement angle of the single-layer continuous woven carcass cord layer in the present invention.

[0034] Figure 6 It is a schematic diagram of the cord arrangement angle of the inner and outer double-layer continuously woven carcass cord plies in the present invention.

[0035] Figure 7It is a schematic diagram of the structure of the cords of the single-layer continuously woven carcass ply in the present invention.

[0036] Figure 8 It is a schematic diagram of the structure of the cords of the inner and outer double-layer continuously woven carcass ply in the present invention.

[0037] Fig. 9 It is a schematic diagram of the arrangement of the apex rubber extending outward along the axial direction of the wire ring structure in the present invention.

[0038] Fig.10 It is a schematic diagram of the arrangement of the apex rubber extending radially outward along the wire ring structure in the present invention.

[0039] Fig.11 Schematic diagram of the cord tape formed by a single cord coated with rubber.

[0040] Fig.12 This is a schematic diagram of a cord tape composed of multiple cords coated with rubber.

[0041] Fig.13 Schematic diagram of the changes in the outer contour of a traditional tire.

[0042] Fig.14 The figure is a schematic diagram of the outer contour change of a tire (1° winding angle) having a multi-layer continuously woven carcass cord layer structure according to the present invention.

[0043] Fig.15 The figure is a schematic diagram of the outer contour change of a tire (2° winding angle) having a multi-layer continuously woven carcass cord layer structure according to the present invention.

[0044] Fig.16 The figure is a schematic diagram of geometric parameters of various parts of a tire having a multi-layer continuously woven carcass cord layer structure according to the present invention.

[0045] Among them, in the figure:

[0046] 1-Wire bead structure; 2-Triangle rubber layer; 3-Multi-layer continuous woven carcass cord layer structure; 4-Sidewall rubber layer; 5-Shoulder rubber layer; 6-Tread lower layer; 7-Tread upper layer; 8-Cap layer; 9-Multi-layer belt cord layer structure; 10-Inner layer; 11-Sub-ribbon protective rubber layer. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or components is not necessarily limited to those steps or components that are clearly listed, but may include other steps or components that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0050] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0051] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Embodiment 1:

[0053] See attached Figure 2The present invention discloses a tire with a multi-layer continuous woven carcass cord layer structure, comprising a wire ring structure 1, a apex rubber layer 2, a multi-layer continuous woven carcass cord layer structure 3, a shoulder rubber layer 5, a sidewall rubber layer 4 and a rubber layer 11, an airtight layer 10 is arranged on the inner side of the multi-layer continuous woven carcass cord layer structure 3, and a multi-layer belt cord layer structure 9 is arranged on the outer side of the multi-layer continuous woven carcass cord layer structure 3; the shoulder rubber layer 5, the sidewall rubber layer 4 and the rubber layer 11 are all bonded to the multi-layer continuous woven carcass cord layer structure 3, the wire ring structure 1 and the apex rubber layer 2 are both arranged inside the multi-layer continuous woven carcass cord layer structure 3, the apex rubber layer 2 is coated on the outer side of the wire ring structure 1, and the multi-layer belt cord layer structure 9 is attached with a tread lower layer 6, a tread upper layer 7 and a cap layer 8.

[0054] In this embodiment, the apex rubber layer 2 is arranged along the circumference of the wire ring structure 1, and the apex rubber layer 2 extends along the radial direction or the axial direction of the wire ring structure 1. Figure 9-10 shown.

[0055] The multi-layer continuous woven carcass ply structure 3 includes n layers of continuous woven carcass ply units, the first layer of continuous woven carcass ply units is located at the center of the multi-layer continuous woven carcass ply structure 3, the second layer of continuous woven carcass ply units is wound and bonded to the first layer of continuous woven carcass ply units with an adhesive layer, and so on, each layer of continuous woven carcass ply units is bonded in sequence, wherein the first layer of continuous woven carcass ply units is a single-layer continuous woven carcass ply, and the second to n-layer continuous woven carcass ply units are inner and outer double-layer continuous woven carcass ply units, and finally a multi-layer continuous woven carcass ply structure 3 with 2n-1 layers of continuous woven carcass ply is formed in the radial direction of the tire.

[0056] The first layer of continuously woven carcass cord layer unit is a first layer of carcass cord tube formed by continuously and evenly covering and zigzagging on the apex rubber layer 2 and the wire ring structure 1 after the cords are coated with rubber.

[0057] The 2nd to nth layer of continuous woven carcass cord layer units are formed by continuously and evenly winding in a zigzag shape at a certain tension and angle on the outer surface of the first layer of continuous woven carcass cord layer after the cords are coated with rubber, and no spacing is retained between each section of the cords. At the same time, the 2nd to nth layer of carcass cord tubes are formed by calendering each layer of cords using an extrusion roller.

[0058] The angle between the arrangement direction of the single cord of the single-layer continuous woven carcass ply in the multi-layer continuous woven carcass ply structure 3 and the tire axial direction is 0.1° to 3° or -0.1° to -3°, such as Figure 5 , Figure 7 (a) and Figure 7 (b) as shown.

[0059] In the multi-layer continuous woven carcass ply structure 3, the inner and outer double-layer continuous woven carcass ply have a single cord arrangement whose inner angle is parallel to or symmetrical to the outer angle, the dividing point between the inner and outer parts is located at the bottom center of the wire ring, and the angle between the single cord arrangement direction and the tire axial direction is 0.1° to 3° or -0.1° to -3°, such as Figure 6 , Figure 8 (a) and Figure 8 (b) as shown.

[0060] After the rubber-coated cords in the multi-layer continuous woven carcass ply structure 3 are arranged in a continuous zigzag shape, the starting point and the end point are connected by butt joint or overlap.

[0061] The positions of the connection points generated by the continuous zigzag arrangement of the cords in the multi-layer continuous woven carcass ply structure 3 after rubber coating are determined by the finite element method or the tension calculation formula;

[0062] The stress distribution of the tire with the multi-layer continuous woven carcass ply structure 3 under inflation and load conditions is calculated using the finite element method, and the position with the minimum cord tension is selected as the position of the cord connection point.

[0063] The thickness of the zigzag-shaped rubber-coated cords in the multi-layer continuous woven carcass ply structure 3 is 0.5-2 times of the cord diameter D.

[0064] The multi-layer continuous woven carcass ply structure 3 adopts a single cord covered with rubber (such as Fig.11 As shown) or multiple rubber-coated cord groups (as Fig.12 The cord tape (as shown) is continuously and evenly arranged in a zigzag shape on the apex rubber layer 2 and the wire ring structure 1 to form a carcass cord tube.

[0065] The cords in the cord belt composed of multiple rubber-coated cords are evenly distributed, and the number of cords is 2 to 8; the width of the rubber-coated cord belt is 1 to 20 mm.

[0066] The cords used in the multi-layer continuous woven carcass ply structure 3 are steel wires, nylon, aramid, a mixture of nylon and aramid, polyester, or carbon fiber materials.

[0067] The continuously woven carcass cord layer units are bonded together or connected by an adhesive layer, and the thickness H of the adhesive layer is greater than the diameter D of the cord.

[0068] The multi-layer continuous woven carcass ply structure 3 is made of one cord or cord tape; or each layer of continuous woven carcass ply unit is arranged in a zigzag pattern, and the starting point positions of each layer of continuous woven carcass ply unit are evenly distributed at a 360° angle.

[0069] The number of layers of the continuously woven carcass ply units in the multi-layer continuously woven carcass ply structure 3 is 2 to 10 layers.

[0070] Embodiment 2:

[0071] Finite element analysis was performed on a conventional tire and a tire with a multi-layer continuous woven carcass ply structure (1° winding angle).

[0072] like Fig.13 The figure shows the change of the outer contour of a traditional tire, where the black contour is the designed outer contour of the tire, the red contour is the inflated outer contour of the tire, and the blue contour is the loaded outer contour of the tire.

[0073] like Fig.14 The figure shows a schematic diagram of the outer contour change of a tire with a multi-layer continuous woven carcass cord layer structure (1° winding angle), wherein the black contour is the design outer contour of the tire, the red contour is the inflated outer contour of the tire, and the blue contour is the loaded outer contour of the tire.

[0074] The steps of finite element analysis are as follows:

[0075] 1. Select the tire model to be analyzed, obtain the relevant geometric parameters and material parameters of the tire model, including the maximum tire width, maximum outer diameter, radius of curvature, rubber elastic modulus, rubber Poisson's ratio, etc., and import them into the finite element calculation software;

[0076] 2. According to the above parameters, establish the tire finite element analysis model and complete the pre-processing of finite element calculation and analysis, including unit establishment, material property assignment, mesh division, etc.;

[0077] 3. Import the pre-processed finite element model into the finite element software calculation module for calculation to obtain the finite element analysis results of the tire;

[0078] The conventional rubber tire and the tire with a multi-layer continuous woven carcass ply structure (1° winding angle) were subjected to finite element analysis, and the same boundary conditions were imposed on them, namely, the inflation pressure was 1.59 MPa, the load was 1.8570×10 5 N, the section width and the sinking amount of the contact section of the two tires under the same boundary conditions are calculated and compared, as shown in Table 1. It can be found that the sinking amount of a tire with a multi-layer continuous woven carcass cord layer structure is reduced by 4.92% compared with the traditional tire, and the maximum width after loading is reduced by 1.0%.

[0079]

[0080] Table 1

[0081] Embodiment 3:

[0082] The influence of different winding angles on the stiffness of a tire with a multi-layer continuous woven carcass ply structure is analyzed. Finite element analysis is performed on a tire with a multi-layer continuous woven carcass ply structure (1° winding angle) and a tire with a multi-layer continuous woven carcass ply structure (2° winding angle).

[0083] like Fig.14 The figure shows a schematic diagram of the outer contour change of a tire with a multi-layer continuous woven carcass cord layer structure (1° winding angle), wherein the black contour is the design outer contour of the tire, the red contour is the inflated outer contour of the tire, and the blue contour is the loaded outer contour of the tire.

[0084] like Fig.15 The figure shows a schematic diagram of the outer contour change of a tire with a multi-layer continuous woven carcass cord layer structure (2° winding angle), wherein the black contour is the design outer contour of the tire, the red contour is the inflated outer contour of the tire, and the blue contour is the loaded outer contour of the tire.

[0085] The tire results of the two carcass structures were analyzed, as shown in Table 2. It can be found that the sinkage of a tire with a multi-layer continuous woven carcass cord layer structure (1° winding angle) is reduced by 2.43% relative to a tire with a multi-layer continuous woven carcass cord layer structure (2° winding angle), and the maximum width after loading is reduced by 0.53%.

[0086]

[0087] Table 2

[0088] Embodiment 4:

[0089] A tire with a multi-layer continuously woven carcass ply structure, the specific steps of manufacturing the tire are:

[0090] S1. Arrangement of the first layer of carcass cord tube: prepare two steel wire ring structures and fix them in parallel at a certain distance, wrap the apex rubber layer on the steel wire ring structure along the circumferential direction, select a cord with rubber coating on the surface, reserve a certain length to fix it on one of the apex rubber layers, and then wind it to the other apex rubber layer with a certain tension and angle, so that it is woven and arranged continuously for 360 degrees along the circumferential direction, and use an extrusion roller to calender the rubber-coated cord into a layer, and finally connect the rubber-coated cord at the calculated connection point to make the first layer of carcass cord tube.

[0091] S2. Arrangement of the 2nd to nth layer carcass ply tubes: cover the upper and lower surfaces of the 1st layer carcass ply tube with rubber layer, select a rubber-coated cord, reserve a certain length, fix one end on the 1st layer carcass ply tube, wind it on the 1st layer carcass ply tube with a certain tension and angle, and use an extrusion roller to calender it, and finally connect the rubber-coated cord at the calculated connection point, so that the 2nd layer carcass ply tube is made, which can be divided into upper and lower layers along the radial direction of the tire; similarly, the 3rd to nth layer carcass ply tubes can be arranged.

[0092] S3, material preparation: prepare other structural layers required for tire production, cut corresponding lengths of airtight layer, shoulder rubber layer, sidewall rubber layer, rim cover layer and bead rubber layer, and attach them to the carcass cord tube according to the structural size and position of the tire to obtain a semi-finished component of a rubber tire with a multi-layer continuous woven carcass cord layer structure;

[0093] S4, molding: filling the semi-finished parts made in S3 with air at a certain pressure to mold the semi-finished parts of the tire, attaching the belt layer and the tread rubber layer by lamination, and obtaining an unvulcanized green tire of a rubber tire with a multi-layer continuous woven carcass cord layer structure;

[0094] S5. Vulcanization: The green tire prepared in S4 is heated and pressurized for vulcanization using a vulcanizer, and after the vulcanization is completed, a tire having a multi-layer continuous woven carcass cord layer structure is obtained.

[0095] The rubber tire is manufactured through four steps of arrangement, material preparation, molding and vulcanization. The manufacturing process of the tire is simple and convenient, which can improve the production efficiency of the rubber tire and ensure reliable quality.

[0096] The first layer of continuously woven carcass ply unit is internally coated with a steel bead ring structure and an apex rubber layer, and is a first layer of carcass ply tube formed by continuously woven and continuously and evenly arranged on the apex rubber layer and the steel bead ring after the cord is coated with rubber, wherein two steel bead ring structures are fixed in parallel at a certain distance;

[0097] The arrangement direction of a single cord in the multi-layer continuous woven carcass ply structure is at an angle of 0.1° to 3° or -0.1° to -3° to the axial direction of the tire;

[0098] The width of the cord tape formed by the single cord with adhesive is b, the thickness is h, and the radius of the wire ring structure covered with the triangle rubber layer is R. rim The cross section of the wire ring structure is approximately a circular cross section, and its diameter is denoted as d. The number of turns of the cord tape in the first layer of continuous woven carcass ply is N1, which can be calculated according to formula (1). The number of turns of the cord tape in the second to nth layers of continuous woven carcass ply is N n , can be calculated according to formula (2);

[0099] according to Figure 3 As shown in the figure, the first layer of continuous woven carcass cord layer unit is composed of continuous woven arrangement, and the spacing between the cord tapes at each end is b; each winding is composed of two cord tapes arranged, and a total of 2N1 cord tapes are continuously woven and arranged in the entire single-layer carcass cord layer, then formula (1) is:

[0100]

[0101] according to Figure 4 As shown in the figure, the 2nd to nth layers of continuous woven carcass ply units are composed of continuous woven arrangements. The thickness of the adhesive between each carcass ply is H. After each winding, the upper and lower layers of the carcass ply tube are each composed of a cord tape, and the spacing between each two cord tapes is 0. There are a total of N continuous woven arrangements in the entire carcass ply. n The formula (2) is:

[0102]

[0103] When the tire is formed, the single-layer carcass cord tube will deform and the radius of each part will change, such as Fig.13 As shown, R rim R is the contact radius of the rim, d is the radius of the tire at its maximum width, is the maximum radius of the first layer of continuous woven carcass cord layer unit after the tire is formed. The cord arrangement density in the first layer of carcass cord tube composed of continuous woven arrangement is expressed by ρ1 (unit: segment / mm). The cord arrangement density of each part in the first layer of continuous woven carcass cord layer after forming is As shown in formulas (3) to (5).

[0104]

[0105]

[0106]

[0107] Similarly, the density of cord arrangement in each part of the 2nd to nth layers of continuous woven carcass cord ply after forming As shown in formulas (6) to (9).

[0108]

[0109]

[0110]

[0111] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tire having a multi-layer continuously woven carcass ply structure, characterized in that: The invention comprises a wire ring structure (1), an apex rubber layer (2) and a multi-layer continuous woven carcass cord layer structure (3), wherein the wire ring structure (1) and the apex rubber layer (2) are both arranged inside the multi-layer continuous woven carcass cord layer structure (3), and the apex rubber layer (2) is coated on the outside of the wire ring structure (1); The multi-layer continuous woven carcass ply structure (3) comprises n layers of continuous woven carcass ply units, wherein the first layer of continuous woven carcass ply units is located at the center of the multi-layer continuous woven carcass ply structure (3), and the second layer of continuous woven carcass ply units is wound and bonded to the first layer of continuous woven carcass ply units with an adhesive layer, and so on, each layer of continuous woven carcass ply units is bonded in sequence, wherein the first layer of continuous woven carcass ply units is a single-layer continuous woven carcass ply, and the second to n-layer continuous woven carcass ply units are inner and outer double-layer continuous woven carcass ply units, and finally a multi-layer continuous woven carcass ply structure (3) having 2n-1 layers of continuous woven carcass ply is formed in the radial direction of the tire.

2. A tire with a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The tire also includes a shoulder rubber layer (5), a sidewall rubber layer (4) and a tread rubber layer (11); an airtight layer (10) is provided on the inner side of the multi-layer continuous woven carcass cord layer structure (3); and a multi-layer belt cord layer structure (9) is provided on the outer side of the multi-layer continuous woven carcass cord layer structure (3); the shoulder rubber layer (5), the sidewall rubber layer (4) and the tread rubber layer (11) are all bonded to the multi-layer continuous woven carcass cord layer structure (3); and the multi-layer belt cord layer structure (9) is attached with a tread lower layer (6), a tread upper layer (7) and a cap layer (8).

3. A tire with a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The first layer of continuously woven carcass cord layer unit is a first layer of carcass cord tube formed by continuously and evenly covering and zigzagging the cords on the apex rubber layer (2) and the wire ring structure (1) after being coated with rubber.

4. A tire with a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The 2nd to nth layer of continuously woven carcass cord layer units are formed by continuously and evenly winding in a zigzag shape at a certain tension and angle on the outer surface of the first layer of continuously woven carcass cord layer unit with an adhesive layer after the cords are coated with rubber, and no spacing is retained between each section of the cords. At the same time, the 2nd to nth layer of carcass cord tubes are formed by calendering each layer of cords using an extrusion roller.

5. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The angle between the arrangement direction of a single cord of the single-layer continuously woven carcass cord layer in the multi-layer continuously woven carcass cord layer structure (3) and the axial direction of the tire is 0.1° to 3° or -0.1° to -3°.

6. The tire having a multi-layer continuously woven carcass ply structure according to claim 1, characterized in that: The inner and outer double-layer continuous woven carcass cord layers in the multi-layer continuous woven carcass cord layer structure (3) have single cords arranged at internal angles parallel to or symmetrically to external angles, the dividing point between the inner and outer parts is located at the bottom center of the wire ring, and the angle between the single cord arrangement direction and the tire axial direction is 0.1° to 3° or -0.1° to -3°.

7. A tire with a multi-layer continuous woven carcass ply structure according to claim 3 or 4, characterized in that: After the rubber-coated cords in the multi-layer continuous woven carcass cord layer structure (3) are arranged in a continuous zigzag shape, the starting point and the end point are connected by butt-jointing or overlapping.

8. A tire with a multi-layer continuous woven carcass ply structure according to claim 3 or 4, characterized in that: The positions of the connection points generated by the continuous zigzag arrangement of the cords in the multi-layer continuous woven carcass cord layer structure (3) after rubber coating are determined by the finite element method or the tension calculation formula; The stress distribution of a tire having a multi-layer continuous woven carcass cord layer structure (3) under inflation and load conditions is calculated using the finite element method, and the position where the cord tension is the smallest is selected as the position of the cord connection point.

9. A tire with a multi-layer continuously woven carcass ply structure according to claim 3 or 4, characterized in that: The thickness of the zigzag-shaped rubber-coated cords in the multi-layer continuously woven carcass cord layer structure (3) is 0.5-2 times the cord diameter D.

10. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The multi-layer continuously woven carcass cord layer structure (3) uses a single rubber-coated cord or a cord belt composed of multiple rubber-coated cords, which is continuously and evenly arranged in a zigzag shape on the apex rubber layer (2) and the wire ring structure (1) to form a carcass cord tube.

11. A tire with a multi-layer continuous woven carcass ply structure according to claim 10, characterized in that: The cords in the cord belt composed of the plurality of rubber-coated cords are evenly distributed, and the number of the cords is 2 to 8; the width of the rubber-coated cord belt is 1 to 20 mm.

12. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The cords used in the multi-layer continuous woven carcass cord layer structure (3) are steel wires, nylon, aramid, a mixture of nylon and aramid, polyester, or carbon fiber materials.

13. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The continuously woven carcass cord ply units are bonded together; Alternatively, the cords are connected by an adhesive layer, wherein the thickness H of the adhesive layer is greater than the diameter D of the cords.

14. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The multi-layer continuous woven carcass cord layer structure (3) is made by arranging a cord or a cord belt; Or each layer of the continuously woven carcass cord layer units is arranged in a zigzag pattern, and the starting points of each layer of the continuously woven carcass cord layer units are evenly distributed at an angle of 360°.

15. The tire having a multi-layer continuous woven carcass ply structure according to claim 1, characterized in that: The number of layers of the continuously woven carcass ply units in the multi-layer continuously woven carcass ply structure (3) is 2 to 10.

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