A multi-steel bead tire having a woven carcass structure and a method of manufacturing the same
Patent Information
- Application Number
- CN202610945705.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-29
- Publication Date
- 2026-09-25
AI Technical Summary
传统的多钢丝圈轮胎在生产制造过程中，其胎体帘布层会在裁断处会产生一系列的裁断点，而裁断点处由于粘合缺陷，往往会造成该区域的破坏，影响轮胎的使用寿命；此外，帘线裁断所导致的不连续，会使其承受张力不均衡，进而制约其承载能力，在上述苛刻的服役工况下容易造成轮胎骨架材料的失效甚至破坏
本发明中通过胎体帘线的连续编织，解决了传统轮胎胎体帘布层中由于裁断点存在所造成的隐患，同时还可以控制轮胎胎体结构张力的连续传递，进而提高轮胎的整体刚度，提高其使用寿命。此外，编织胎体帘布层可以为轮胎结构承担更多的载荷，在达到同等性能的情况下可以减少橡胶材料的使用量，从而减轻轮胎的重量，实现轮胎的轻量化。
Smart Images
Figure CN122808389A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tire technology, and more specifically to a multi-wire tire with a woven carcass structure. Background Technology
[0002] For heavy-duty trucks, engineering vehicles, aircraft, and other large vehicles, their tires typically need to withstand heavy loads, large deformations, high heat generation, and harsh operating environments. Under these conditions, tires need to strengthen bead strength, improve load-bearing capacity, and enhance rim fit stability. Therefore, the bead of ordinary single-wire tires needs to be reinforced. A common method is to increase the number of wires, i.e., multi-wire tires. Multi-wire tires generally have a structure of 4-8 wires, with multiple layers of carcass plies and belt plies arranged on each ply. These skeleton materials together constitute the tire's load-bearing structure. In the manufacturing process of traditional multi-wire tires, the carcass plies will have a series of cut points at the cut points. Due to adhesion defects, these cut points often cause damage to the area, affecting the tire's service life. In addition, the discontinuity caused by the cut cords will result in uneven tension, thus limiting its load-bearing capacity. Under the aforementioned harsh operating conditions, this can easily lead to failure or even damage to the tire skeleton material. Summary of the Invention
[0003] In view of the above, the present invention provides a multi-wire bead tire with a woven carcass structure to solve the problems mentioned in the background art, and specifically discloses the following: A multi-wire tire with a woven carcass structure includes a woven carcass structure comprising a first wire bead, a first triangular rubber layer, a central woven carcass ply, and woven carcass ply units; the first wire bead and the first triangular rubber layer are both disposed inside the central woven carcass ply, and the woven carcass ply unit comprises n double-layer woven carcass ply layers sequentially covering the outside of the central woven carcass ply; The central braided carcass ply is a single-layer carcass ply formed by continuously weaving and pressing rubber-coated cords around two first steel wire loops, each covered with a first triangular rubber layer; the central braided carcass ply is located in the very center of the braided carcass structure; the double-layer braided carcass ply is a double-layer carcass ply formed by continuously weaving and pressing rubber-coated cords around the surface of the central braided carcass ply.
[0004] Furthermore, the inner side of the woven tire carcass structure is fitted with an inner liner layer, and the outer side is fitted with a radial tire carcass structure; the bead protection layer is fitted to the bead portion of the woven tire carcass structure and the radial tire carcass structure; from bottom to top, the outer side of the radial tire carcass structure is fitted with a sidewall rubber layer, a shoulder pad rubber layer, and a belt ply layer; from inside to outside, the outer side of the belt ply layer is fitted with a base rubber layer, a crown belt layer, and a tread rubber layer.
[0005] Furthermore, the radial tire carcass structure includes a second steel wire ring, a second triangular rubber layer, and a radial tire carcass ply unit. The second steel wire ring and the second triangular rubber layer are both disposed inside the radial tire carcass ply unit, and the radial tire carcass ply unit includes m radial tire carcass ply layers arranged sequentially from the inside to the outside.
[0006] Furthermore, the number n of the double-layer woven carcass plies ranges from 1 to 4; the number m of the radial carcass plies ranges from 1 to 7; and the total number of carcass plies along the radial direction of the tire is: m+1+2n.
[0007] Furthermore, the weaving angle between the rubber-coated cords and the tire axial direction in the central braided carcass ply and the double-layer braided carcass ply is 0.1°~3°; the weaving angles of the upper and lower layers of rubber-coated cords in the double-layer braided carcass ply are opposite.
[0008] Furthermore, the cords used in the braided tire structure and the radial tire structure are steel cords, nylon cords, aramid cords, nylon and aramid blended cords, polyester cords, or carbon fiber cord materials.
[0009] Furthermore, the rubber-coated cords used in the braided tire structure are composed of 1-4 cords arranged at equal intervals and coated with rubber.
[0010] A method for manufacturing a multi-wire bead tire with a woven carcass structure, for manufacturing any of the above-described multi-wire bead tires with a woven carcass structure, comprising the following steps: S1. Two first steel wire loops covered with the first triangular rubber layer are fixed parallel to each other on the braided tire forming machine at a certain interval. A rubber-coated cord is selected, and after leaving a certain overlap length, it is fixed to one of the first steel wire loops covered with the first triangular rubber layer. Then, the tension and winding angle are set so that the rubber-coated cord is wound onto the two first steel wire loops covered with the first triangular rubber layer in sequence. After continuously winding around the circumference for one round, the rubber-coated cord is cut and overlapped with the rubber-coated cord reserved at the starting point. Adhesive layers are attached to both the inner and outer surfaces of the braided rubber-coated cord, and it is rolled into a layer of cord fabric, so that the central braided tire cord fabric layer is formed. S2. Continue using a single rubber-coated cord to wind around the surface of the already formed central woven tire carcass ply in the same way. After continuously winding around the circumference of the central woven tire carcass ply, apply adhesive layers to both the inner and outer surfaces and calender again to form a double-layer woven tire carcass ply. Repeat this process to form n double-layer woven tire carcass ply layers, ultimately forming a woven tire carcass structure. S3. The inner liner, bead protector, and sidewall rubber layer are sequentially bonded to the forming drum. The formed woven carcass structure is then transferred from the woven carcass forming machine to the forming drum and placed in a predetermined position. The radial carcass ply unit and the shoulder pad rubber layer are sequentially bonded to the surface of the woven carcass structure. The second steel wire ring covered with the second triangular rubber layer is then placed on the surface of the radial carcass ply unit and close to the outside of the first steel wire ring. S4. The forming drum is inflated and pressurized to make the rubber components on the forming drum bulge. At the same time, the radial carcass ply unit, the bead protector layer and the sidewall rubber layer are reversed and wrapped. In this way, the forming of the woven carcass structure and the radial carcass structure are completed. Then, the belt ply layer, the base rubber layer, the crown belt layer and the tread rubber layer are bonded together in sequence, and finally the green tire of the multi-wire bead tire with woven carcass structure is formed. S5. The formed multi-wire tire with a woven carcass structure is vulcanized. After vulcanization, a multi-wire tire with a woven carcass structure is obtained.
[0011] The beneficial effects of this invention are as follows: This invention solves the problem of potential hazards caused by cut points in traditional tire carcass ply layers through continuous weaving of the carcass cords. It also controls the continuous transmission of tension in the tire carcass structure, thereby improving the overall stiffness and service life of the tire. Furthermore, weaving the carcass ply layers allows the tire structure to bear more load, reducing the amount of rubber material used while achieving the same performance, thus reducing tire weight and achieving lightweight tire design. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0013] Figure 1 This is a cross-sectional view of a multi-wire bead tire with a woven carcass structure according to the present invention.
[0014] Figure 2 This is a cross-sectional view of the woven body structure of the present invention.
[0015] Figure 3 This is a cross-sectional view of the radial tire structure of the present invention.
[0016] Figure 4 This is a two-dimensional planar schematic diagram of the central woven fabric layer of the present invention.
[0017] Figure 5 This is a three-dimensional schematic diagram of the tire cords in the centrally woven tire cord layer of the present invention.
[0018] Figure 6 This is a two-dimensional planar schematic diagram of the double-layer woven fabric layer of the present invention.
[0019] Figure 7 This is a three-dimensional schematic diagram of the tire cords in the double-layer woven tire cord layer of the present invention.
[0020] In the figure: 1-Bead protector layer, 2-Woven carcass structure, 3-Inner liner layer, 4-Belt cord layer, 5-Crown belt layer, 6-Radial carcass structure, 7-Side rubber layer, 8-Shoulder pad layer, 9-Base layer, 10-Tread rubber layer, 21-First bead, 22-First triangular layer, 23-Center woven carcass cord layer, 24-Woven carcass cord unit, 61-Second bead, 62-Second triangular layer, 63-Radial carcass cord unit. Detailed Implementation
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.
[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or components is not necessarily limited to those explicitly listed, but may include other steps or components not explicitly listed or inherent to such processes, methods, products, or devices.
[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0024] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0026] See appendix Figure 1-7 This invention discloses a multi-wire tire with a woven carcass structure, including a woven carcass structure 2. The woven carcass structure 2 includes a first wire bead 21, a first triangular rubber layer 22, a central woven carcass ply layer 23, and woven carcass ply units 24. The first wire bead 21 and the first triangular rubber layer 22 are both disposed inside the central woven carcass ply layer 23. The woven carcass ply unit 24 includes n double-layer woven carcass ply layers that are sequentially wrapped around the outside of the central woven carcass ply layer 23. The central braided carcass ply 23 is a single-layer carcass ply formed by continuously weaving and pressing two first steel wire loops 21, each covered with a first triangular rubber layer 22, with rubber-coated cords. The central braided carcass ply 23 is located in the middle of the braided carcass structure 2. The double-layer braided carcass ply is a double-layer carcass ply formed by continuously weaving and pressing rubber-coated cords around the surface of the central braided carcass ply 23.
[0027] The inner side of the woven carcass structure 2 is fitted with an inner liner layer 3, and the outer side is fitted with a radial carcass structure 6; the bead protection layer 1 is fitted at the bead area of the woven carcass structure 2 and the radial carcass structure 6; the outer side of the radial carcass structure 6 is fitted with a sidewall rubber layer 7, a shoulder pad rubber layer 8 and a belt ply layer 4 from bottom to top; the outer side of the belt ply layer 4 is fitted with a base rubber layer 9, a crown belt layer 5 and a tread rubber layer 10 from the inside to the outside.
[0028] The radial tire carcass structure 6 includes a second steel wire ring 61, a second triangular rubber layer 62, and a radial tire carcass ply unit 63. The second steel wire ring 61 and the second triangular rubber layer 62 are both disposed inside the radial tire carcass ply unit 63. The radial tire carcass ply unit 63 includes m radial tire carcass ply layers arranged sequentially from the inside to the outside.
[0029] The number of double-layer woven carcass plies n ranges from 1 to 4; the number of radial carcass plies m ranges from 1 to 7; the total number of carcass plies along the radial direction of the tire is: m+1+2n.
[0030] The weaving angle between the rubber-coated cords and the tire axial direction in the center braided carcass ply 23 and the double-braided carcass ply is 0.1°~3°; the weaving angles of the upper and lower rubber-coated cords in the double-braided carcass ply are opposite.
[0031] The cords used in the braided carcass structure 2 and the radial carcass structure 6 are steel cords, nylon cords, aramid cords, nylon and aramid blended cords, polyester cords, or carbon fiber cords.
[0032] The rubber-coated cords used in the braided carcass structure 2 consist of 1-4 cords arranged at equal intervals and coated with rubber.
[0033] A method for manufacturing a multi-wire bead tire with a woven carcass structure includes the following steps: S1. Two first steel wire loops 21 covered with the first triangular rubber layer 22 are fixed parallel to each other on the braided tire forming machine at a certain interval. A rubber-coated cord is selected, and after leaving a certain overlap length, it is fixed to one of the first steel wire loops 21 covered with the first triangular rubber layer 22. Then, the tension and winding angle are set so that the rubber-coated cord is wound onto the two first steel wire loops 21 covered with the first triangular rubber layer 22 in sequence. After continuously winding around the circumference for one round, the rubber-coated cord is cut and overlapped with the rubber-coated cord reserved at the starting point. Adhesive layers are attached to both the inner and outer surfaces of the braided rubber-coated cord, and it is rolled into a layer of cord fabric, so that the central braided tire cord fabric layer 23 is formed. S2. Continue using a rubber-coated cord to wind around the surface of the already formed central woven carcass ply 23 in the same way. After continuously winding around the circumference of the central woven carcass ply 23, apply adhesive layers to both its inner and outer surfaces and calender it again to form a double-layer woven carcass ply. Repeat this process to form n double-layer woven carcass ply layers, finally forming the woven carcass structure 2. S3. The inner liner 3, the bead protector 1, and the sidewall rubber layer 7 are sequentially attached to the forming drum. Then, the formed woven tire carcass structure 2 is transferred from the woven tire carcass forming machine to the forming drum and placed in a predetermined position. The radial tire carcass ply unit 63 and the shoulder pad rubber layer 8 are sequentially attached to the surface of the woven tire carcass structure 2. Then, the second steel wire ring 61 covered with the second triangular rubber layer 62 is placed on the surface of the radial tire carcass ply unit 63 and close to the outside of the first steel wire ring 21. S4. The forming drum is inflated and pressurized to make the rubber components on the forming drum bulge. At the same time, the radial carcass ply unit 63, the bead protector layer 1 and the sidewall rubber layer 7 are reversed and wrapped. In this way, the forming of the woven carcass structure 2 and the radial carcass structure 6 is completed. Then, the belt ply layer 4, the base rubber layer 9, the crown belt layer 5 and the tread rubber layer 10 are bonded together in sequence, and finally the green tire of the multi-wire bead tire with the woven carcass structure 2 is formed. S5. The formed multi-steel wire ring tire with woven carcass structure 2 is vulcanized. After vulcanization is completed, a multi-steel wire ring tire with woven carcass structure 2 is obtained.
[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A multi-wire bead tire with a woven carcass structure, characterized in that, The system includes a braided tire structure (2), which includes a first wire ring (21), a first triangular rubber layer (22), a central braided tire cord layer (23), and a braided tire cord unit (24). The first wire ring (21) and the first triangular rubber layer (22) are both disposed inside the central braided tire cord layer (23). The braided tire cord unit (24) includes n double-layered braided tire cord layers that are sequentially wrapped around the outside of the central braided tire cord layer (23). The central braided carcass ply (23) is a single-layer carcass ply formed by continuously weaving and pressing two first steel wire loops (21) covered with a first triangular rubber layer (22) around the rubber-coated cord; the central braided carcass ply (23) is located in the middle of the braided carcass structure (2); the double-layer braided carcass ply is a double-layer carcass ply formed by continuously weaving and pressing the rubber-coated cord around the surface of the central braided carcass ply (23).
2. A multi-wire bead tire with a woven carcass structure according to claim 1, characterized in that, The inner side of the woven tire carcass structure (2) is fitted with an inner liner layer (3), and the outer side is fitted with a radial tire carcass structure (6); the bead protection layer (1) is fitted to the bead portion of the woven tire carcass structure (2) and the radial tire carcass structure (6); the outer side of the radial tire carcass structure (6) is fitted with a sidewall rubber layer (7), a shoulder pad rubber layer (8), and a belt ply layer (4) from bottom to top; the outer side of the belt ply layer (4) is fitted with a base rubber layer (9), a crown layer (5), and a tread rubber layer (10) from inside to outside.
3. A multi-wire bead tire with a woven carcass structure according to claim 2, characterized in that, The radial tire carcass structure (6) includes a second steel wire ring (61), a second triangular rubber layer (62), and a radial tire carcass ply unit (63). The second steel wire ring (61) and the second triangular rubber layer (62) are both disposed inside the radial tire carcass ply unit (63). The radial tire carcass ply unit (63) includes m radial tire carcass ply layers arranged sequentially from the inside to the outside.
4. A multi-wire bead tire with a woven carcass structure according to claim 3, characterized in that, The number of double-layer woven carcass plies n ranges from 1 to 4; the number of radial carcass plies m ranges from 1 to 7; and the total number of carcass plies along the radial direction of the tire is m + 1 + 2n.
5. A multi-wire bead tire with a woven carcass structure according to claim 1, characterized in that, The weaving angle between the rubber-coated cords and the tire axis in the central braided carcass ply (23) and the double-layer braided carcass ply is 0.1°~3°; the weaving angles of the upper and lower layers of rubber-coated cords in the double-layer braided carcass ply are opposite.
6. A multi-wire bead tire with a woven carcass structure according to claim 2, characterized in that, The cords used in the braided tire structure (2) and the radial tire structure (6) are steel cords, nylon cords, aramid cords, nylon and aramid blended cords, polyester cords or carbon fiber cords.
7. A multi-wire bead tire with a woven carcass structure according to claim 1, characterized in that, The rubber-coated cords used in the braided body structure (2) consist of 1-4 cords arranged at equal intervals and coated with rubber.
8. A method for manufacturing a multi-wire bead tire with a woven carcass structure, used to manufacture the multi-wire bead tire with a woven carcass structure as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Fix two first steel wire loops (21) covered with the first triangular rubber layer (22) at a certain distance on the braided tire forming machine. Select a rubber-coated cord, leave a certain overlap length, and fix it on one of the first steel wire loops (21) covered with the first triangular rubber layer (22). Then set the tension and winding angle so that the rubber-coated cord is wound onto the two first steel wire loops (21) covered with the first triangular rubber layer (22) in sequence. After continuously winding around the circumference for one round, cut the rubber-coated cord and overlap it with the rubber-coated cord reserved at the starting point. Apply adhesive layers to both the inner and outer surfaces of the braided rubber-coated cord and roll it into a layer of cord fabric so that the central braided tire cord fabric layer (23) is formed. S2. Continue using a single rubber-coated cord to wind around the surface of the already formed central woven tire cord layer (23) in the same way. After continuously winding around the central woven tire cord layer (23) around its circumference, apply adhesive layers to both its inner and outer surfaces and calender it again to form a double-layer woven tire cord layer. Repeat this process to form n double-layer woven tire cord layers, ultimately forming a woven tire structure (2). S3. On the forming drum, the inner liner (3), the bead protector (1), and the sidewall rubber layer (7) are sequentially attached. Then, the formed woven carcass structure (2) is transferred from the woven carcass forming machine to the forming drum and placed in the predetermined position. On the surface of the woven carcass structure (2), the radial carcass ply unit (63) and the shoulder pad rubber layer (8) are sequentially attached. Then, the second wire ring (61) covered with the second triangular rubber layer (62) is placed on the surface of the radial carcass ply unit (63) and close to the outside of the first wire ring (21). S4. The molding drum is inflated and pressurized to make the rubber components on the molding drum bulge. At the same time, the radial carcass ply unit (63), the bead protector layer (1) and the sidewall rubber layer (7) are wrapped in reverse. In this way, the woven carcass structure (2) and the radial carcass structure (6) are formed. Then, the belt ply layer (4), the base rubber layer (9), the crown belt layer (5) and the tread rubber layer (10) are bonded together in sequence, so that the green tire with the woven carcass structure (2) is formed. S5. The formed multi-wire tire with woven carcass structure (2) is vulcanized. After vulcanization, a multi-wire tire with woven carcass structure (2) is obtained.