A tire structure having continuous tire body cord and belt cord tension and method of manufacture

Abstract

The present application relates to the technical field of tires, in particular to a tire structure with continuous tire body cord and belt cord tension and a manufacturing method thereof. The tire structure comprises a multilayer tire body cord tension continuity structure and a multilayer belt cord tension continuity structure, the multilayer tire body cord tension continuity structure is internally coated with a bead wire, a triangle rubber layer and a bead wire wrapping layer, and the multilayer belt cord tension continuity structure is attached to the outer side of the multilayer tire body cord tension continuity structure. The present application can effectively solve the breakpoint problem of the traditional tire body cord and the belt cord, so that the tire body and the belt cord can continuously transmit tension and control the radial and circumferential deformation of the tire.

Description

TECHNICAL FIELD

[0001] The present application relates to the tire technology field, and in particular to a tire structure with continuous tire body cord and belt cord tension and a manufacturing method thereof. BACKGROUND

[0002] The conventional all-steel radial load tire usually adopts a multi-layer belt structure, and the belt layers are woven by steel cord and share the stress of the tire during driving with the tire body ply. The conventional all-steel radial load tire pastes the multi-layer belt structure on the tire body ply, and the belt layers are arranged at a specific angle instead of radially between the tire body and the tread to improve the lateral stiffness and handling performance of the tire, but a series of cutting points are generated at the cutting of the ply. Since the belt layers are not continuous with the internal cord of the tire body, the cord bears uneven tension during the driving of the tire, and the tire is easily damaged under the conditions of strong impact and heavy load.

[0003] The tire body ply of the conventional tire is formed by pressing, cutting and splicing the cord and rubber, and a series of cutting points are generated at the cutting of the ply, resulting in interface bonding defects in the cutting point area of the tire body. During the use of the tire, the cord cutting point area and the rubber have a sharp shearing behavior, resulting in holes and cracks in the early use of the area, which greatly reduces the service life of the tire. Since the cord is discontinuous, the carrying capacity of the tire is severely restricted.

[0004] Therefore, how to provide a tire structure with continuous tire body cord and belt cord tension and a manufacturing method thereof has become a technical problem urgently to be solved by those skilled in the art. SUMMARY

[0005] In view of the above problems in the prior art, the present application provides a tire structure with continuous tire body cord and belt cord tension and a manufacturing method thereof, and specifically discloses the following technical scheme:

[0006] A tire structure with continuous tire body cord and belt cord tension, comprising a multi-layer tire body cord tension continuity structure and a multi-layer belt cord tension continuity structure, the multi-layer tire body cord tension continuity structure is internally covered with a bead, a triangular rubber layer and a bead cover layer, and the multi-layer belt cord tension continuity structure is attached to the outer side of the multi-layer tire body cord tension continuity structure.

[0007] The multi-layered carcass cord tension continuity structure is composed of n carcass cord tension continuous carcass ply units, the first carcass cord tension continuous carcass ply unit is located at the center of the multi-layered carcass cord tension continuity structure, the second carcass cord tension continuous carcass ply unit is woven and wound on the first carcass cord tension continuous carcass ply unit with an adhesive layer, forming two layers; and so on, each carcass cord tension continuous carcass ply unit is woven and wound in turn, and finally a multi-layered carcass cord tension continuity structure with 2n-1 layers of carcass ply along the radial direction of the tire is formed; the carcass cord tension continuous carcass ply unit is an endless carcass ply cylinder formed by weaving the cord or the coated cord in a continuous zigzag shape.

[0008] The multi-layered belt cord tension continuity structure is composed of k layers of belt cord tension continuous belt ply, the first layer of belt cord tension continuous belt ply is attached to the outside of the multi-layered carcass cord tension continuity structure with an adhesive layer, and the remaining layers of belt cord tension continuous belt ply are attached to the outside of the first layer of belt cord tension continuous belt ply in turn to form the multi-layered belt cord tension continuity structure.

[0009] Further, the shoulder pad rubber layer, the sidewall rubber layer and the bead protector layer are also included, and the shoulder pad rubber layer, the sidewall rubber layer and the bead protector layer are attached to the multi-layered carcass cord tension continuity structure, the inside of the multi-layered carcass cord tension continuity structure is provided with an air tight layer, the adhesive layer is attached between each ply in the multi-layered carcass cord tension continuity structure, and the multi-layered belt cord tension continuity structure is sequentially attached with the underlayer, the crown layer and the upper layer of the tread.

[0010] A manufacturing method of a tire structure with carcass cord and belt cord tension continuity, characterized in that it comprises the following steps:

[0011] S1, weaving of the first carcass cord tension continuous carcass ply unit: two steel wire rings are prepared and fixed in parallel at a certain interval, the triangular rubber layer is wrapped around the steel wire rings in the circumferential direction, a coated cord or a cord belt composed of several coated cords is selected, a length is reserved and fixed on one of the triangular rubber layers, and then it is wound to the other lower triangular rubber layer at a certain tension and angle, so that it is continuously wound in a zigzag shape along the circumferential direction for 360 degrees, and the coated cord or cord belt is calendered into one layer by using the extrusion roller, and finally the coated cord or cord belt is connected at the calculated connection point, thus the first carcass cord tension continuous carcass ply unit is made;

[0012] S2, weaving of the second to n th carcass ply unit with continuous cord tension: coating the upper and lower surfaces of the first carcass ply unit with continuous cord tension with rubber layer, selecting a rubberized cord or a cord belt composed of several rubberized cords, reserving a length, fixing one end of the rubberized cord or cord belt to the first carcass ply unit with continuous cord tension, and weaving the rubberized cord or cord belt on the first carcass ply unit with continuous cord tension at a certain tension and angle, while using an extrusion roller for calendering, finally connecting the rubberized cord or cord belt at the calculated connection point, thus forming the second carcass ply unit with continuous cord tension, and the second carcass ply unit with continuous cord tension is divided into upper and lower two layers along the radial direction of the tire, and so on until the weaving of the n th carcass ply unit with continuous cord tension is completed, and finally a multi-layer carcass ply with continuous cord tension structure is formed;

[0013] S3, preparation: preparing other structural layers required for tire production and manufacturing, cutting the corresponding length of air tightness layer, shoulder pad rubber layer, side rubber layer, bead cover layer and bead protector layer, and attaching them to the multi-layer carcass ply with continuous cord tension structure according to the structure size and position of the tire, to obtain a semi-finished part of the rubber tire with multi-layer carcass ply with continuous cord tension structure;

[0014] S4, molding: inflating the semi-finished part with a certain pressure air in the semi-finished part prepared in step S2 to mold the semi-finished part of the tire;

[0015] S5, weaving of the multi-layer belt ply with continuous cord tension: selecting a rubberized cord or a cord belt composed of several rubberized cords, and winding and weaving the rubberized cord or cord belt from the set belt width position along the outer side of the multi-layer carcass ply with continuous cord tension at a certain tension and angle in the circumferential direction until the width of the woven layer reaches the set belt width, to form the first layer of belt ply with continuous cord tension, and so on, and sequentially attaching the remaining layers of belt ply with continuous cord tension to form a multi-layer belt ply with continuous cord tension structure;

[0016] S6, laminating the tread rubber layer on the multi-layer belt ply with continuous cord tension to obtain a green tire with continuous cord tension structure;

[0017] S7, vulcanization: using a vulcanizing machine to heat and press the prepared green tire to vulcanize, and obtaining a rubber tire with continuous cord tension structure after vulcanization.

[0018] Further, the winding angle of the single rubberized cord or cord belt in the multi-layer carcass ply with continuous cord tension structure is 0.1°-3° or -0.1°- -3° with the axial direction of the tire, and the winding angle of the single rubberized cord or cord belt in the multi-layer belt ply with continuous cord tension structure is 0.1°-30° or -0.1°- -30° with the center plane of the tread of the tire.

[0019] Further, the winding angles of the 2th to nth tire body cord layer units with continuous cord tension should be kept in symmetrical relationship, including the angle of the upper layer of the tire body with the angle of the lower layer of the tire body being opposite, or the angle of the upper layer of the tire body with the angle of the adjacent upper layer of the tire body being opposite, and the angle of the lower layer of the tire body with the angle of the adjacent lower layer of the tire body being opposite.

[0020] Further, the end point of the continuous zigzag winding of the rubberized cord or cord belt in the multi-layer tire body cord tension continuity structure returns to the starting position, and the connection mode of the starting point and the end point adopts butt joint and / or lap joint.

[0021] Further, the triangular rubber layer is arranged along the circumference of the bead ring, and the material of the bead cover layer is a rubber strip or a woven cord layer.

[0022] Further, the number of layers of the cord tension continuous belt cord layer in the multi-layer belt cord tension continuity structure is even, and the winding angles of the internal cords of the adjacent two layers of the cord tension continuous belt cord layer are symmetrically arranged.

[0023] Further, the thickness of the continuous rubberized cord in the multi-layer tire body cord tension continuity structure and the multi-layer belt cord tension continuity structure is 0.5-2 times the diameter of the cord, and the cords in the multi-layer tire body cord tension continuity structure and the multi-layer belt cord tension continuity structure include steel wires, nylon, aramid, and nylon and aramid hybrid materials.

[0024] Further, the multi-layer tire body cord tension continuity structure and the multi-layer belt cord tension continuity structure are directly bonded or bonded through an adhesive layer, and when the adhesive layer is used for bonding, the thickness of the adhesive layer is greater than the diameter of the tire body cord.

[0025] Further, the cord tension continuous tire body cord layer unit and the cord tension continuous belt cord layer unit are both formed by continuously and uniformly winding the cord belt composed of a single rubberized cord or multiple rubberized cords to form a cord drum, and the cords in the cord belt composed of multiple rubberized cords are uniformly distributed, and the number of cords is 2-8.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] The present application sets the multi-layer carcass cord tension continuity structure and the multi-layer belt cord tension continuity structure, ensures the continuous transmission of the tension in the skeleton material direction of the tire under the inflation and load state, improves the overall stiffness of the tire, can reduce the size of each component of the tire, and can greatly reduce the weight of the tire, and can solve the industry technical problems of the discontinuous stiffness and interface adhesion defects of the breakpoint of the carcass ply structure and the belt ply structure in the existing tire.

[0028] The present application can effectively solve the breakpoint problem of the traditional tire carcass ply and belt ply, so that the carcass and belt cord can continuously transmit tension, control the radial and circumferential deformation of the tire, and the continuous transmission of the tire skeleton tension can effectively improve the stiffness of each component of the tire, thereby greatly improving the load capacity, impact resistance, high speed performance and service life of the tire. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a cross-sectional schematic view of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0030] Figure 2 is a winding schematic view of a first carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0031] Figure 3 is a schematic view of the cord arrangement angle of the first carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0032] Figure 4 is a winding schematic view of the 2-nth carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0033] Figure 5 is a schematic view of the cord arrangement angle of the 2-nth carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0034] Figure 6 is a structure schematic view of the first carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0035] Figure 7 is a structure schematic view of the 2-nth carcass ply unit with continuous cord tension of a tire structure with continuous carcass cord and belt cord tension according to the present application;

[0036] Figure 8The structure diagram of the first and 2~n carcass cord units with continuous tire structure of the tire body cord and the belt cord tension in the application;

[0037] Figure 9 The winding diagram of the belt cord with continuous cord tension in the tire structure of the tire body cord and the belt cord tension in the application;

[0038] Figure 10 The structure diagram of the belt cord with continuous cord tension in the tire structure of the tire body cord and the belt cord tension in the application;

[0039] Figure 11 The arrangement form diagram of the bead core in the tire structure of the tire body cord and the belt cord tension in the application;

[0040] Figure 12 The diagram of the cord belt composed of single cord coating and multiple cord coating in the cord structure of the application;

[0041] Figure 13 The profile change diagram of a tire with traditional multi-layer tire body and belt cord structure;

[0042] Figure 14 The profile change diagram of the tire structure of the tire body cord and the belt cord tension in the application;

[0043] Figure 15 The diagram of the parameters of each part in the tire structure of the tire body cord and the belt cord tension in the application.

[0044] 1-bead, 2-bead core, 3-air tight layer, 4-multilayer tire body cord tension continuity structure, 5-tire shoulder pad layer, 6-multilayer belt cord tension continuity structure, 7-tire upper layer, 8-crown belt layer, 9-tire lower layer, 10-tire side rubber layer, 11-bead protector layer, 12-bead cover layer. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the application will be described clearly and completely below with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0046] The present application provides a tire structure with continuous tire body cord and belt cord tension to improve the impact resistance and load capacity of the tire.

[0047] To achieve the above-mentioned purposes, with reference to Figure 1 The present application provides a tire structure with continuous tire body cord and belt cord tension, which comprises a multilayer tire body cord tension continuity structure 4, a multilayer belt cord tension continuity structure 6, a shoulder pad rubber layer 5, a sidewall rubber layer 10, and a bead filler layer 11. The inside of the multilayer tire body cord tension continuity structure 4 is provided with an airtight layer 3. The multilayer tire body cord tension continuity structure 4 is provided with an adhesive layer between each cord layer. The outside of the multilayer tire body cord tension continuity structure 4 is provided with a multilayer belt cord tension continuity structure 6. The shoulder pad rubber layer 5, the sidewall rubber layer 10, and the bead filler layer 11 are attached to the multilayer tire body cord tension continuity structure 4. The inside of the multilayer tire body cord tension continuity structure 4 is covered with a steel wire ring 1, a triangular rubber layer 2, and a steel wire ring wrapping layer 12. The outside of the multilayer belt cord tension continuity structure 6 is sequentially attached with a lower layer of the tread 9, a crown belt layer 8, and an upper layer of the tread 7.

[0048] Further optimization of the technical scheme, the multilayer tire body cord tension continuity structure 4 is composed of n continuous cord tension tire body cord units, the first continuous cord tension tire body cord unit is located at the center of the multilayer tire body cord tension continuity structure 4, the second continuous cord tension tire body cord unit is woven and wound on the first continuous cord tension tire body cord unit with an adhesive layer, forming two layers; in this way, each continuous cord tension tire body cord unit is woven and wound in turn, finally forming a multilayer tire body cord tension continuity structure 4 with 2n-1 layers of tire body cord layers along the radial direction of the tire; the continuous cord tension tire body cord unit is formed by continuously weaving the cord or coated cord in a zigzag shape to form an endless tire body cord tube;

[0049] The multilayer belt cord tension continuity structure 6 is composed of k layers of continuous cord tension belt cord layers. The first layer of continuous cord tension belt cord layer is attached to the outside of the multilayer tire body cord tension continuity structure 4 with an adhesive layer. The remaining layers of continuous cord tension belt cord layers are sequentially attached to the outside of the first layer of continuous cord tension belt cord layer to form the multilayer belt cord tension continuity structure 6.

[0050] The present application also provides a manufacturing method for a tire structure with continuous tire body cord and belt cord tension, comprising the following steps:

[0051] S1, weaving of the first continuous cord tension carcass ply unit: two bead wires are fixed in parallel at a certain interval, a triangular rubber layer is wrapped around the bead wire in the circumferential direction, a rubberized cord or a cord belt composed of several rubberized cords is selected, a length is reserved and fixed to one of the triangular rubber layers, and then it is wound to the other lower triangular rubber layer at a certain tension and angle, which is continuously wound in a zigzag shape along the circumferential direction for 360 degrees, and the rubberized cord or cord belt is calendered into one layer using a calender roller, and finally the rubberized cord or cord belt is connected at the calculated connection point, thereby forming the first continuous cord tension carcass ply unit;

[0052] S2, weaving of the second to n continuous cord tension carcass ply unit: the upper and lower surfaces of the first continuous cord tension carcass ply unit are wrapped with rubber layers, a rubberized cord or a cord belt composed of several rubberized cords is selected, a length is reserved, one end is fixed to the first continuous cord tension carcass ply unit, and it is woven on the first continuous cord tension carcass ply unit at a certain tension and angle, while being calendered using a calender roller, and finally the rubberized cord or cord belt is connected at the calculated connection point, thereby forming the second continuous cord tension carcass ply unit, the second continuous cord tension carcass ply unit is divided into two layers in the radial direction of the tire, and the process is repeated until the weaving of the n continuous cord tension carcass ply unit is completed, thereby forming a multi-layer carcass cord tension continuity structure;

[0053] S3, preparation: other structure layers required for tire production and manufacturing are prepared, the corresponding lengths of air tightness layer, shoulder pad rubber layer, side rubber layer, bead cover layer and bead protector layer are cut, and they are attached to the multi-layer carcass cord tension continuity structure according to the structure size and position of the tire, thereby obtaining a semi-finished part of the rubber tire with a multi-layer carcass cord tension continuity structure;

[0054] S4, molding: the semi-finished part prepared in step S2 is inflated with air at a certain pressure to form the semi-finished part of the tire;

[0055] S5, weaving of the multi-layer belt cord tension continuity structure: a rubberized cord or a cord belt composed of several rubberized cords is selected, and is wound and woven in the circumferential direction at a certain tension and angle from the set belt width position along the outside of the multi-layer carcass cord tension continuity structure, until the width of the woven layer reaches the set belt width, thereby forming the first continuous cord tension belt ply, and the remaining continuous cord tension belt plies are sequentially attached to form a multi-layer belt cord tension continuity structure;

[0056] S6, laminating the tread rubber layer on the multi-layer belt cord tension continuity structure to obtain an unvulcanized rubber tire with the cord tension continuity structure;

[0057] S7, vulcanization: using a vulcanizing machine to heat and press the prepared green tire for vulcanization, and obtaining a rubber tire with the cord tension continuity structure after the vulcanization is completed.

[0058] Further optimize the technical scheme, the winding angle of the single rubber-coated cord or cord belt in the multi-layer carcass cord tension continuity structure 4 and the axial direction of the tire is 0.1°-3° or -0.1°- -3°, and the angle of the single rubber-coated cord or cord belt winding in the multi-layer belt cord tension continuity structure 6 and the center plane of the tire tread is 0.1°-30° or -0.1°- -30°.

[0059] Further optimize the technical scheme, the winding angle of the second to n cord tension continuity carcass cord unit should maintain a symmetrical relationship, including the angle of the upper layer rubber-coated cord or cord belt of each layer of the carcass and the angle of the lower layer rubber-coated cord or cord belt are opposite; or the angle of the upper layer rubber-coated cord or cord belt of each layer of the carcass and the angle of the adjacent upper layer rubber-coated cord or cord belt are opposite, and the angle of the lower layer rubber-coated cord or cord belt of each layer of the carcass and the angle of the adjacent lower layer rubber-coated cord or cord belt are opposite.

[0060] Further optimize the technical scheme, after the continuous zigzag winding of the rubber-coated cord or cord belt in the multi-layer carcass cord tension continuity structure 4, the end point will return to the starting position, and the connection mode of the starting point and the end point adopts butt joint and / or lap joint.

[0061] Further optimize the technical scheme, the starting position of the continuous weaving of the rubber-coated cord or cord belt in the multi-layer carcass cord tension continuity structure 4 is determined by finite element analysis or tension calculation formula, the stress distribution of the tire of the multi-layer carcass cord tension continuity structure under the conditions of inflation and load is calculated by using the finite element method, and the position with the smallest carcass cord tension is selected as the starting position of the continuous weaving of the cord tension continuity carcass cord layer structure.

[0062] Further optimize the technical scheme, the triangular rubber layer 2 is arranged along the circumferential direction of the steel wire ring 1, and the material of the steel wire ring cover layer 12 is a rubber strip or a woven cord layer.

[0063] Further optimize the technical scheme, the number of layers of the cord tension continuity belt cord layer in the multi-layer belt cord tension continuity structure 6 is even, and the winding angles of the internal cords of the adjacent two cord tension continuity belt cord layers are symmetrically arranged.

[0064] Further optimize the technical scheme, the cords in the cord belt composed of multiple rubber-coated cords are uniformly distributed, the distribution interval is determined by the tire structure design, and the number of cords is 2-8.

[0065] Further optimization technical scheme, the thickness of the continuously woven rubber coated cord in the multi-layer carcass cord tension continuity structure and the multi-layer belt cord tension continuity structure is 0.5-2 times of the cord diameter, and the cords of the multi-layer carcass cord tension continuity structure 4 and the multi-layer belt cord tension continuity structure 6 include steel wires, nylon, aramid and mixed material of nylon and aramid.

[0066] Further optimization technical scheme, the multi-layer carcass cord tension continuity structure and the multi-layer belt cord tension continuity structure are directly bonded or bonded through an adhesive layer, when the adhesive layer is used for bonding, the thickness of the adhesive layer is greater than the diameter of the carcass cord.

[0067] In the application, the multi-layer carcass cord tension continuity structure and the multi-layer belt cord tension continuity structure are arranged, so that the tension in the skeleton material direction is continuously transmitted under the conditions of inflation and load, the overall stiffness of the tire is improved, the size of each component of the tire can be reduced, the weight of the tire can be greatly reduced, and the technical problems of discontinuous stiffness at the breakpoint of the carcass ply structure and the belt ply structure and the interface adhesion defect in the existing tire can be solved.

[0068] The application can effectively solve the breakpoint problem of the traditional tire carcass ply and the belt ply, so that the carcass and the belt cord can continuously transmit tension and control the deformation of the tire in the radial and circumferential directions; the continuous transmission of the tire skeleton tension can effectively improve the stiffness of each component of the tire, thereby greatly improving the load capacity, impact resistance, high-speed performance and service life of the tire.

[0069] Example 1

[0070] The finite element analysis is respectively performed on a tire with a multi-layer zigzag carcass ply structure and a tire structure with continuous tension of the carcass cord and the belt cord, and the specific steps are as follows:

[0071] 1. Selecting a tire model to be analyzed, obtaining the related geometric parameters and material parameters of the tire model, including the maximum width, the maximum outer diameter, the curvature radius, the elastic modulus of the rubber, the Poisson's ratio of the rubber, etc., and importing them into the finite element calculation software;

[0072] 2. According to the above parameters, a finite element analysis model of the tire is established, and the pre-processing of the finite element calculation and analysis is completed, including element establishment, material property assignment, mesh division, etc.;

[0073] 3. The finite element model after pre-processing is imported into the calculation module of the finite element software for calculation, and the finite element analysis results of the tire are obtained;

[0074] The finite element analysis of the external load conditions is that the tire inflation pressure is 1.59 MPa, and the load of the tire contact area is 1.8570×105 N.

[0075] The obtained outer contour change of the tire with the traditional multi-layer carcass and belt ply structure is as shown in Figure 12 The obtained outer contour change of the tire with the carcass cord and belt cord tension continuous structure is as shown in Figure 13 As shown in the following Table 1, the deflection of the tire with the carcass cord and belt cord tension continuous structure is reduced by 8.87% compared with the tire with the traditional multi-layer carcass and belt structure, and the maximum width after loading is reduced by 1.8%.

[0076]

[0077] Table 1

[0078] Example 2

[0079] A manufacturing method of a tire with a carcass cord and belt cord tension continuous structure, comprising the following steps:

[0080] S1, weaving of the first cord tension continuous carcass ply unit: two steel wire rings are prepared and fixed in parallel at a certain interval, a triangular rubber layer is wrapped around the steel wire rings in the circumferential direction, a rubber-coated cord or a cord belt composed of a plurality of rubber-coated cords is selected, a length is reserved and fixed on one of the triangular rubber layers, and then the rubber-coated cord or the cord belt is wound on the other lower triangular rubber layer at a certain tension and angle, so that the rubber-coated cord or the cord belt is continuously wound in a zigzag shape along the circumferential direction for 360 degrees, and the rubber-coated cord or the cord belt is calendered into a layer using a squeezing roller, and finally the rubber-coated cord or the cord belt is connected at the calculated connection point, thereby manufacturing the first cord tension continuous carcass ply unit;

[0081] S2, weaving of the second to n cord tension continuous carcass ply unit: the upper and lower surfaces of the first cord tension continuous carcass ply unit are wrapped with rubber layers, a rubber-coated cord or a cord belt composed of a plurality of rubber-coated cords is selected, a length is reserved, and one end is fixed on the first cord tension continuous carcass ply unit, and then the rubber-coated cord or the cord belt is woven on the first cord tension continuous carcass ply unit at a certain tension and angle, while the rubber-coated cord or the cord belt is calendered using a squeezing roller, and finally the rubber-coated cord or the cord belt is connected at the calculated connection point, thereby manufacturing the second cord tension continuous carcass ply unit, the second cord tension continuous carcass ply unit is divided into upper and lower layers in the radial direction of the tire, and the weaving of the n cord tension continuous carcass ply units is continued in this way, thereby finally forming a multi-layer carcass cord tension continuous structure;

[0082] S3, preparation: prepare other structural layers required for tire production and manufacturing, cut the corresponding length of the air tightness layer, shoulder pad rubber layer, side rubber layer, bead cover layer and bead protector layer, and attach them to the multi-layer carcass cord tension continuity structure according to the structure size and position of the tire, to obtain a semi-finished product part of the rubber tire with a multi-layer carcass cord tension continuity structure;

[0083] S3, molding: filling the semi-finished product part made in step S2 with a certain pressure air to make the semi-finished product part of the tire;

[0084] S4, weaving of multi-layer belt cord tension continuity structure: selecting a rubberized cord or a cord belt composed of several rubberized cords, and weaving it circumferentially at a certain tension and angle from the set belt width position along the outside of the multi-layer carcass cord tension continuity structure until the weaving width reaches the set belt width, forming the first layer of cord tension continuous belt ply, and so on, and sequentially attaching the remaining layers of cord tension continuous belt ply to form a multi-layer belt cord tension continuity structure;

[0085] S5, laminating the tread rubber layer on the multi-layer belt cord tension continuity structure to obtain an unvulcanized rubber tire with a cord tension continuity structure;

[0086] S6, vulcanization: using a vulcanizing machine to heat and press the prepared tire to vulcanize, and obtaining a rubber tire with a cord tension continuity structure after vulcanization is completed.

[0087] Further optimize the technical scheme, the winding angle of the single rubberized cord or cord belt in the multi-layer carcass cord tension continuity structure 4 is 0.1°-3° or -0.1°-3° with the axial direction of the tire, and the winding angle of the single rubberized cord or cord belt in the multi-layer belt cord tension continuity structure 6 is 0.1°-30° or -0.1°-30° with the center plane of the tire tread.

[0088] The width of the cord belt formed after the rubberization of a single cord is b, the thickness is h, the radius of the bead covered with the triangular rubber layer is R rim , the diameter of the bead section is d, the number of turns of the cord belt in the first cord tension continuous carcass ply is N1, which can be calculated according to formula (1), and the number of turns of the cord belt in the 2nd to nth cord tension continuous carcass ply is N 2～n , which can be calculated according to formula (2); preferably, the width of the rubberized single cord is between 2-4mm, and the cord belt composed of multiple rubberized cords can be composed of 2-8 cords.

[0089] According to Figure 2As shown, the first cord tension continuous carcass ply unit, the interval between each two cord bands is b; each winding is arranged by two cord bands, and a total of 2N1cord bands are arranged in the whole single-layer cord tension continuous carcass ply, as shown in formula (1):

[0090]

[0091] According to Figure 4 , the 2nd to nth cord tension continuous carcass ply unit, the rubber coating thickness between each carcass ply is H, each winding is arranged by one cord band in the upper layer and one cord band in the lower layer of the carcass ply barrel, and the interval between each two cord bands is 0; a total of N n cord bands are zigzag arranged in the whole cord tension continuous carcass ply unit, as shown in formula (2):

[0092]

[0093] According to Figure 5 , 10 , the 1st to kth cord tension continuous belt ply, the width of each cord tension continuous belt ply is W K , the rubber coating thickness between each two cord tension continuous belt plies is H, and the interval between each two cord bands is c k ; a total of K k cord bands are arranged in the whole cord tension continuous belt ply, as shown in formula (3):

[0094]

[0095] When the tire blank is formed, the carcass ply barrel of each layer of cord tension continuous carcass ply will be deformed, and the radius of each part will change, as shown in Figure 10 is a schematic diagram of the formed tire, wherein R rim is the engagement radius of the rim, R d is the radius at the position of the maximum width of the tire, R is the maximum radius of the first cord tension continuous carcass ply unit after the tire blank is formed, W K is the width of each belt ply; the density of cord arrangement in the first cord tension continuous carcass ply unit is represented by p1(unit: segment / mm), and the density of cord arrangement in each part of the first cord tension continuous carcass ply unit after formation is represented by formula (4)-(6).

[0096]

[0097] ​

[0098]

[0099] Similarly, the density of the cord arrangement in each part of the 2nd to nth cord tension-continuous carcass ply unit after forming (unit: segments / mm) is shown by equations (7) to (9).

[0100]

[0101]

[0102]

[0103] The density of the cord arrangement in the 1st to kth cord tension-continuous belt ply is shown by equation (10): (unit: segments / mm).

[0104]

[0105] The above description is only of the preferred embodiments of the present application and is not intended to limit the technical scope of the present application in any way, and thus any slight modification, equivalent change, and modification of the above embodiments according to the technical spirit of the present application still fall within the scope of the technical solutions of the present application.

Claims

1. A tire structure having a continuous tire body cord and belt cord tension, characterized by, The application relates to a multi-layered tire body cord tension continuity structure and a multi-layered belt cord tension continuity structure, wherein the multi-layered tire body cord tension continuity structure is internally coated with a bead, a triangular rubber layer and a bead cover layer, and the multi-layered belt cord tension continuity structure is attached to the outer side of the multi-layered tire body cord tension continuity structure. The multi-layered tire body cord tension continuity structure is composed of n tire body cord units with continuous tension, a first tire body cord unit with continuous tension is located at the center of the multi-layered tire body cord tension continuity structure, a second tire body cord unit with continuous tension is woven and wound on the first tire body cord unit with continuous tension and a bonding rubber layer, thereby forming two layers, and each tire body cord unit with continuous tension is sequentially woven and wound, and finally a multi-layered tire body cord tension continuity structure with 2n-1 tire body cord layers along the radial direction of the tire is formed; the tire body cord unit with continuous tension is formed by continuously zigzag weaving a rubber-coated cord without end points. The multi-layered belt cord tension continuity structure is composed of k layers of belt cord layers with continuous tension, a first layer of belt cord layer with continuous tension is attached to the outer side of the multi-layered tire body cord tension continuity structure with a bonding rubber layer, and each layer of belt cord layer with continuous tension is sequentially attached to the outer side of the first layer of belt cord layer with continuous tension to form a multi-layered belt cord tension continuity structure.

2. A tire structure having continuous carcass cord and belt cord tension according to claim 1, characterized in that, The application further comprises a shoulder pad rubber layer, a side rubber layer and a bead filler rubber layer, which are attached to the multi-layered tire body cord tension continuity structure, the inner side of the multi-layered tire body cord tension continuity structure is provided with an air-tight layer, a bonding rubber layer is attached between each cord layer in the multi-layered tire body cord tension continuity structure, and the outer side of the multi-layered belt cord tension continuity structure is sequentially provided with an under-tread layer, a crown layer and an upper-tread layer.

3. A method of manufacturing a tire structure having a continuous carcass cord and belt cord tension, characterized by, The application comprises the following steps: S1, weaving of the first tire body cord unit with continuous tension: two beads are fixed in parallel at a certain interval, a triangular rubber layer is coated on the beads in the circumferential direction, a rubber-coated cord or a cord belt composed of several rubber-coated cords is selected, a certain length of the rubber-coated cord or cord belt is reserved and fixed on one of the triangular rubber layers, and then the rubber-coated cord or cord belt is wound on the other triangular rubber layer at a certain tension and angle, so as to continuously zigzag wind 360 degrees along the circumferential direction, the rubber-coated cord or cord belt is calendered into one layer by using a calendering roller, and finally the rubber-coated cord or cord belt is connected at the calculated connecting point, thereby forming the first tire body cord unit with continuous tension. S2, weaving the second to n th cord tension continuous carcass ply unit: the upper and lower surfaces of the first cord tension continuous carcass ply unit are coated with adhesive layers, a rubberized cord or a cord belt composed of several rubberized cords is selected, a length is reserved, one end is fixed on the first cord tension continuous carcass ply unit, and it is woven on the first cord tension continuous carcass ply unit at a certain tension and angle, while an extrusion roller is used for calendering, and finally the rubberized cord or cord belt is connected at the calculated connection point, so that the second cord tension continuous carcass ply unit is made, and the second cord tension continuous carcass ply unit is divided into upper and lower two layers along the radial direction of the tire, and so on, until the weaving of the n cord tension continuous carcass ply unit is completed, and finally the multi-layer carcass cord tension continuity structure is formed; S3, preparation: prepare other structure layers required for tire production and manufacturing, cut the corresponding length of the air tightness layer, the shoulder pad rubber layer and the side rubber layer, the bead cover layer and the bead protector layer, and attach them on the multi-layer carcass cord tension continuity structure according to the structure size and position of the tire, to obtain the semi-finished part of the rubber tire with the multi-layer carcass cord tension continuity structure; S4, molding: inflate the semi-finished part of the tire with a certain pressure air in the semi-finished part prepared in step S3 to mold the semi-finished part of the tire; S5, weaving of the multi-layer belt cord tension continuity structure: a rubberized cord or a cord belt composed of several rubberized cords is selected, and is wound and woven circumferentially at a certain tension and angle from the set belt width position along the outer side of the multi-layer carcass cord tension continuity structure, until the width of the weaving reaches the set belt width, to form the first layer of cord tension continuous belt ply, and so on, and the remaining layers of cord tension continuous belt ply are sequentially attached to form the multi-layer belt cord tension continuity structure; S6, laminating the tread rubber layer on the multi-layer belt cord tension continuity structure to obtain the green tire with the cord tension continuity structure; S7, vulcanization: using a vulcanizing machine to heat and press the prepared green tire to vulcanize, and obtaining the rubber tire with the cord tension continuity structure after vulcanization is completed; The winding angle of the single rubberized cord or cord belt in the multi-layer carcass cord tension continuity structure and the axial direction of the tire is 0.1°-3° or -0.1°-3°, and the winding angle of the single rubberized cord or cord belt in the multi-layer belt cord tension continuity structure and the center plane of the tread of the tire is 0.1°-30° or -0.1°-30°; The winding angles of the second to n th cord tension continuous carcass ply unit maintain a symmetrical relationship, including that the angle of the upper layer rubberized cord or cord belt of each layer of carcass is opposite to the angle of the lower layer rubberized cord or cord belt, or the angle of the upper layer rubberized cord or cord belt of each layer of carcass is opposite to the angle of the adjacent upper layer rubberized cord or cord belt, and the angle of the lower layer rubberized cord or cord belt of each layer of carcass is opposite to the angle of the adjacent lower layer rubberized cord or cord belt; The end point of the rubber-coated cord or cord belt in the multi-layered carcass cord tension continuity structure returns to the starting position after continuous zigzag winding, and the starting point and the end point are connected by butt joint or lap joint.

4. A method of manufacturing a tire structure having continuous tire body cord and belt cord tension according to claim 3, characterized in that, The triangular rubber layer is arranged along the circumference of the bead wire, and the material of the bead cover layer is a rubber strip or a woven cord layer.

5. A method of manufacturing a tire structure having continuous tire body cord and belt cord tension according to claim 3, wherein, The number of layers of the cord tension continuous belt cord layer in the multi-layered belt cord tension continuity structure is even, and the winding angles of the internal cords of the adjacent two layers of cord tension continuous belt cord layers are symmetrically arranged.

6. A method of manufacturing a tire structure having continuous tire body cord and belt cord tension according to claim 3, wherein, The thickness of the continuously woven rubber-coated cord in the multi-layered carcass cord tension continuity structure and the multi-layered belt cord tension continuity structure is 0.5-2 times the diameter of the cord, and the cords in the multi-layered carcass cord tension continuity structure and the multi-layered belt cord tension continuity structure include steel wire, nylon, aramid or nylon and aramid hybrid materials.

7. A method of manufacturing a tire structure having continuous tire body cord and belt cord tension according to claim 3, wherein, The multi-layered carcass cord tension continuity structure and the multi-layered belt cord tension continuity structure are directly bonded or bonded through an adhesive layer, and when the adhesive layer is used, the thickness of the adhesive layer is greater than the diameter of the carcass cord.

8. A method of manufacturing a tire structure having continuous tire body cord and belt cord tension according to claim 3, wherein, The cord tension continuous carcass cord unit and the cord tension continuous belt cord layer are formed by continuously and uniformly winding the cord belt composed of a single rubber-coated cord or multiple rubber-coated cords, and the cords in the cord belt composed of multiple rubber-coated cords are uniformly distributed, and the number of cords is 2-8.

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