Tire with good puncture resistance and manufacturing method thereof

Abstract

The invention relates to the field of tires, in particular to a tire with good puncture resistance and a manufacturing method thereof.The tire comprises a tire body and a puncture-proof layer, the puncture-proof layer is used for improving the puncture resistance of the tire body and is attached to the inner wall of the tire in a vulcanization manner; and an anti-falling structure is arranged between the puncture-proof layer and the tire inner wall. According to the anti-puncture tire, the anti-puncture layer is attached to the tire inner wall of the tire body, the anti-puncture layer adopts the nano adhesive tape, and the thickness of the nano adhesive tape is one fifth to one third of that of the tire wall of the tire body, so that the anti-puncture ability of the whole tire body can be improved, and even if puncture occurs and a puncture object is pulled out, the nano adhesive can block a puncture hole, so that the tire does not leak air. And the whole tire wall is not too thick after vulcanization and lamination, so that the puncture-proof capability is ensured, and the light weight of the whole tire is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of tires, and particularly to a tire with good puncture resistance and a manufacturing method thereof. Background Art

[0002] Vehicles such as cars and electric vehicles need to be equipped with rubber tires. Currently, vehicle tires are mainly made of rubber. Since the tires are in direct contact with the ground and rub against the ground when the vehicle is moving, the tires must also have the characteristics of high wear resistance and flex fatigue resistance. During the driving process of the vehicle, a certain air pressure must be maintained. If the tire is punctured by a sharp object during driving and air leakage occurs, it will affect driving safety and cause the vehicle to be unable to move. Therefore, for vehicle tires, preventing puncture during driving and preventing air leakage are of great significance for driving safety.

[0003] Currently, the common methods for tire puncture prevention are as follows:

[0004] 1. Coat a special sealant on the inner wall of the tire (for example, the puncture-proof tire composition and its coating method disclosed in Publication No. CN1303409A). When encountering a small puncture, it can automatically fill and prevent air leakage. However, the drawback of this method is that during the high-speed driving process of the vehicle or in high-temperature weather, the temperature of the tire is very easy to reach or exceed a certain temperature (such as 110°C). The puncture-proof and leak-proof tire sealant manufactured using the existing technology will flow inside the tire, not only making the tire lose its puncture-proof and leak-proof function, but also destroying the dynamic balance of the tire, posing a risk that the vehicle cannot drive at high speed.

[0005] 2. Add a puncture-proof belt between the tire and the inner tube to block sharp objects from piercing. This method can also effectively prevent small punctures, etc. However, in order to make the puncture-proof belt into the tire, the structure of the tire itself needs to be reasonably optimized, which increases the manufacturing difficulty. Summary of the Invention

[0006] The purpose of the present invention is to provide a tire with good puncture resistance and a manufacturing method thereof to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A tire with good puncture resistance includes a carcass and a puncture-proof layer, wherein:

[0009] The carcass has an inner wall;

[0010] The puncture-proof layer is used to improve the puncture resistance of the carcass and is attached to the inner wall of the carcass by vulcanization;

[0011] There is an anti-disengagement structure between the puncture-proof layer and the inner wall of the carcass.

[0012] Further, the anti-disengagement structure includes a protrusion integrated with the inner wall of the tire. A notch is formed on the side surface of the protrusion. An opening for the protrusion to be inserted is formed on the puncture-proof layer, and an extension part matching the notch is provided in the opening.

[0013] Further, the notch has a gradually decreasing slope from the top to the bottom, and a "C"-shaped groove is formed at the top of the notch for hooking the extension part.

[0014] Further, the anti-disengagement structure includes a protrusion integrated with the inner wall of the tire, and the side surface of the protrusion has patterns or small holes.

[0015] Further, both sides of the puncture-proof layer have edges, and the length of each edge is one-sixth to one-tenth of the length of the middle part between the two edges.

[0016] Further, the edges extend towards both sides of the inner wall of the tire, and the thickness gradually decreases until it reaches 0 to form a transition.

[0017] Further, the tire body has a bead rubber layer, and bead wires are embedded near the end of the bead rubber layer.

[0018] Further, the puncture-proof layer is made of a nano tape.

[0019] To achieve the above object, the present invention also provides the following technical solutions:

[0020] A manufacturing method of a tire with good puncture resistance, comprising:

[0021] Forming a tire body in a mold, and making the inner wall of the tire body have an integrated protrusion;

[0022] Forming an opening on the puncture-proof layer, then closely attaching it to the inner wall of the tire and sleeving the protrusion on the opening;

[0023] Putting the tire body with the puncture-proof layer into a vulcanizer and vulcanizing it under set conditions, so that the puncture-proof layer is combined with the tire body and finally pasted into one body.

[0024] Further, the set conditions are that the vulcanization temperature is 160 - 170 °C, the vulcanization pressure is 15 - 25 MPa, and the vulcanization time is 25 - 35 min.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The present invention can improve the puncture-proof and anti-penetration capability of the whole tire body by attaching the puncture-proof layer to the tire inner wall of the tire body, and the puncture-proof layer adopts nano adhesive tape, and the thickness is one-fifth to one-third of the tire wall of the tire body. At the same time, because the puncture-proof layer adopts nano adhesive tape, the side of the nano adhesive in contact with the tire inner wall has viscosity, so the puncture-proof layer can be attached / combined with the tire inner wall during subsequent vulcanization, even if puncture occurs, the puncture object (such as a nail) is pulled out, and the nano adhesive can also block the puncture hole to prevent the tire from leaking. Moreover, the anti-detachment structure can be adopted to have a good fixing effect after the puncture-proof layer and the tire inner wall are attached by vulcanization on the one hand, and on the other hand, it can meet the requirements of different types of existing tires (such as automobiles, electric vehicles, etc.) to strengthen the puncture-proof effect, and the production process and method are relatively simplified, and the operation is also relatively easy, and the production time is relatively shortened, and the overall tire wall will not be too thick after vulcanization and lamination, which not only ensures the puncture-proof capability, but also helps to lighten the whole tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle.

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the longitudinal section structure.

[0030] Figure 4 For the present invention Figure 3 Schematic diagram of the specific structure after enlarging point A in the middle.

[0031] Figure 5 For the present invention Figure 3 Another specific structural schematic diagram after enlarging point A in the middle.

[0032] Figure 6 The figure is a schematic diagram of the tread structure on the tread of the present invention.

[0033] In the figure: 1-tread, 2-tread inner wall, 3-protrusion, 4-anti-puncture layer, 5-anti-slip structure, 6-notch, 7-extension part, 8-groove, 9-grain or small hole, 10-edge, 11-tread edge rubber layer, 12-middle, 13-toe wire, 14-shoulder grain I, 15-middle grain I, 16-middle grain III16, 17-middle grain IV, 18-middle grain II18, 19-shoulder grain II, 20-transverse groove I, 21-blind hole, 22-groove, 23-longitudinal main groove I, 24-longitudinal main groove II. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper end", "lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed with", "socketed", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figures 1 to 4 , the present invention provides a technical solution:

[0038] A tire with good puncture resistance, including a tire body 1 and a puncture-proof layer 4, wherein:

[0039] The tire body 1 has a tire inner wall 2;

[0040] The puncture-proof layer 4 is used to improve the puncture resistance of the tire body 1 and is attached to the tire inner wall 2 by vulcanization;

[0041] There is an anti-disengagement structure 5 between the puncture-proof layer 4 and the tire inner wall 2.

[0042] In this embodiment, the anti-disengagement structure 5 includes a protrusion 3 integrated with the tire inner wall 2. A notch 6 is formed on the side surface of the protrusion 3. An opening for the protrusion 3 to be inserted is formed on the puncture-proof layer 4, and an extension part 7 matching the notch 6 is provided in the opening. At the top of the notch 6, there is a "C"-shaped groove 8 for hooking the extension part 7.

[0043] In this embodiment, by attaching the puncture-proof layer 4 to the inner wall 2 of the carcass 1, the puncture-proof layer 4 is made of nano tape with a thickness of one-fifth to one-third of the thickness of the carcass wall of the carcass 1, which can improve the puncture and penetration resistance of the entire carcass 1. At the same time, since the puncture-proof layer 4 is made of nano tape and the side of the nano glue in contact with the inner wall 2 has adhesiveness, the puncture-proof layer 4 can be bonded / fixed to the inner wall 2 during subsequent vulcanization. Even if a puncture occurs and the puncturing object (such as a nail) is pulled out, the nano glue can block the puncture hole to prevent the tire from leaking air. Moreover, the anti-detachment structure 5 can, on the one hand, ensure a good fixing effect between the puncture-proof layer 4 and the inner wall 2 after vulcanization and attachment, and on the other hand, can enhance the puncture-proof effect for different types of existing tires (such as cars, electric vehicles, etc.). The manufacturing process and method are relatively simplified, the operation is relatively easy, the manufacturing time is relatively shortened, and the overall carcass wall will not be too thick after vulcanization and attachment, which not only ensures the puncture-proof ability but also contributes to the lightweight of the entire tire.

[0044] In this embodiment, when the puncture-proof layer 4 is attached to the inner wall 2, the opening of the puncture-proof layer 4 is sleeved on the protrusion 3, and the top of the protrusion 3 is flush with the opening after attachment. Since the extension part 7 cooperates with the notch 6 and the groove 8 can hook the extension part 7, after attachment and vulcanization, the puncture-proof layer 4 can be more firmly fixed / attached to the inner wall 2. Even when the temperature inside the tire is relatively high, such as reaching 110°C, during summer or when the tire rotates at high speed, the puncture-proof layer 4 can firmly adhere to the inner wall 2 and will not easily fall off, thus not affecting the puncture-proof effect of the tire. At the same time, the integration of the protrusion 3 and the inner wall 2 of the tire also improves the strength of the tire crown.

[0045] In this embodiment, the slope of the notch 6 gradually becomes gentler from the top to the bottom, that is, as Figure 4 shown, the opening of the notch near the top is deeper, and the opening of the notch near the bottom is shallower. This can not only ensure that the extension part 7 can be accommodated in the notch 6 in the largest amount, ensuring a good hooking effect of the groove 8, but also ensure that the protrusion 3 can have a good tensile stress when subjected to the force of the puncture-proof layer 4.

[0046] In this embodiment, both sides of the puncture-proof layer 4 have edges 10, and the length of each edge 10 is one-sixth to one-tenth of the length of the middle part 12 between the two edges 10. Or the edges 10 extend towards both sides of the inner wall 2 of the tire, and the thickness gradually decreases to 0 to form a transition. Through this design, the edges 10 can prevent the puncture-proof layer 4 from falling off and warping. Moreover, through the symmetrical design of the edges 10 on both sides of the middle part 12, the dynamic balance of the tire can be adjusted, which is also conducive to eliminating or reducing imbalance and making the vehicle tire more stable during high-speed driving.

[0047] Specifically, the carcass 1 has a bead rubber layer 11, and a bead wire 13 is embedded near the end of the bead rubber layer 11. The bead wire 13 is used to increase the connection strength of the tire structure.

[0048] Meanwhile, this embodiment also provides a manufacturing method for a tire with good puncture resistance, including:

[0049] Form the carcass 1 in a mold, and make the inner carcass wall 2 of the carcass 1 have an integrated protrusion 3;

[0050] Open an opening on the puncture-resistant layer 4, then closely attach it to the inner carcass wall 2 and make the protrusion 3 set on the opening;

[0051] Put the carcass 1 with the puncture-resistant layer 4 into a vulcanizer and vulcanize it under set conditions, so that the puncture-resistant layer 4 is combined with the carcass 1 and finally pasted into one body.

[0052] Specifically, through the high temperature of 165°C, high pressure of 20 MPa, and vulcanization for 30 min of the vulcanizer, the rubber compound of the nano glue can exert a better bonding force with the inner carcass wall 2, making the puncture-resistant components of the tire play the best effect.

[0053] It should be noted that the carcass 1 in this embodiment can use commercially available tires, and the model can be a tire for an automobile, a motorcycle, an electric vehicle, or other rubber tires. The protrusion 3 can be made according to needs. Of course, the carcass 1 can also be a customized tire processed according to the usage needs of customers. In this case, there will be differences in the number of tire layers and materials. Those skilled in the art can choose according to actual needs and will not be elaborated here.

[0054] It should be noted that the nano tape in this embodiment can also be attached to the inner carcass wall 2 in several arc-shaped segments in sequence and become an integral circular ring shape consistent with the shape of the carcass 1 after attachment. Then, during the vulcanization process, the joints between adjacent nano glues are combined together.

[0055] Embodiment 2

[0056] Please refer to Figure 5 , a technical solution provided by the present invention, which is basically the same as that of Embodiment 1 with slight differences:

[0057] The anti-disengagement structure 5 includes a protrusion 3 integrated with the inner carcass wall 2, and the side surface of the protrusion 3 has patterns or small holes 9.

[0058] In this embodiment, compared with Embodiment 1, when the puncture-resistant layer 4 is attached to the inner carcass wall 2 of the carcass 1 and vulcanized, the rubber compound of the nano glue is more likely to be combined with the patterns or small holes 9 on the protrusion 3, and it can also make the mold structure for making the shape of the carcass 1 and the protrusion 3 more concise. The reason is that the notch 6 in Embodiment 1, the slope of the notch 6 gradually becoming gentler from the top to the bottom, and the "C"-shaped groove 8 at the top of the notch 6 are missing, so the manufacturing difficulty will naturally be reduced.

[0059] Please refer toFigure 6 , the present invention provides a technical solution, which is basically the same as that of Embodiment 1 and / or 2 with slight differences:

[0060] In this embodiment, tread patterns are provided on the tread surface of the carcass 1. The tread patterns adopt a single-direction large-inclination wide-square pattern design. The tread patterns include shoulder pattern I 14, shoulder pattern II 19, intermediate pattern I 15, intermediate pattern II 18, intermediate pattern III 16, and intermediate pattern IV 17 that are spaced apart from left to right in sequence.

[0061] Shoulder pattern I 14 and shoulder pattern 19 are symmetrically distributed with respect to the longitudinal main groove II 24. Larger shoulder pattern I and shoulder pattern II are continuously arranged on the shoulder pattern, presenting a high-saturation shoulder, which can ensure the lateral rigidity and torsional rigidity of the carcass 1, as well as the wear resistance and grip when turning of the carcass 1, offset the centrifugal force generated during cornering, and avoid the vehicle from fishtailing. Semi-closed transverse grooves I 20 are continuously arranged at intervals, showing an inclined inverted V-shaped structure, and their depth gradually becomes shallower from the side close to the intermediate pattern to the outside close to the tread edge.

[0062] In this embodiment, there are 2 blind holes 21 with different sizes on intermediate pattern I 18 and intermediate pattern II 18, which can "chop up" the noise area on the tread surface separately when the tire is running at high speed, reduce the spread of noise, achieve reducing the noise generated when the tire is running, and provide a good driving comfort. Serrated grooves 22 are continuously arranged, and the knife groove slope has a large-inclination design, which not only provides excellent dry and wet grip performance, handling performance, and support force, but also has smooth lines, fast speed increase, and is not easy to skid laterally. At the same time, grooves 22 are continuously designed with a serrated large inclination, which can also effectively release the air compressed in the tread pattern groove quickly and reduce the frequency of squeezing air when the tire tread is running.

[0063] Both intermediate pattern III 16 and intermediate pattern IV 17 are in a wavy shape, and a wavy longitudinal main groove I 23 and a straight longitudinal main groove II 24 are respectively arranged. This can not only improve the drainage efficiency and the maneuverability on a wet and slippery road surface, but also the arrangement mode of the groove and the intermediate pattern is wavy groove, intermediate pattern, straight groove, intermediate pattern, wavy groove arranged at intervals, effectively reducing the generation of crown heat during the running of the tire, avoiding the occurrence of tread heat generation and chunking, and improving the handling driving safety performance.

[0064] In this embodiment, the arrangement mode of the groove and the intermediate pattern increases the running surface of the pattern, which can effectively improve the high-speed stability, provide better grip, especially perform more excellently when turning and on a wet and slippery road surface, and enhance the driving safety.

[0065] For the present invention, the un-described parts are the prior art.

[0066] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tire with good puncture resistance, characterized in that: It comprises a carcass (1) and a puncture-proof layer (4), wherein: The tire body (1) has a tire inner wall (2); The puncture-proof layer (4) is used to improve the puncture resistance of the tire body (1) and is attached to the tire inner wall (2) by vulcanization; An anti-stripping structure (5) is provided between the puncture-proof layer (4) and the tire inner wall (2).

2. A tire with good puncture resistance as claimed in claim 1, characterized in that: The anti-slip structure (5) comprises a protrusion (3) integrated with the tire inner wall (2), a notch (6) is provided on the side of the protrusion (3), an opening for the protrusion (3) to be inserted is provided on the anti-puncture layer (4), and an extension part (7) matching the notch (6) is provided in the opening.

3. A puncture-resistant tire according to claim 2, characterized in that: The slope of the notch (6) gradually becomes gentler from the top to the bottom, and a "C"-shaped groove (8) is provided at the top of the notch (6) for hooking the extension part (7).

4. A puncture-resistant tire according to claim 1, characterized in that: The anti-slip structure (5) comprises a protrusion (3) integrated with the tire inner wall (2), and the side surface of the protrusion (3) has lines or small holes (9).

5. A puncture-resistant tire according to any one of claims 1 to 4, characterized in that: The stab-proof layer (4) has edges (10) on both sides, and the length of each edge (10) is one sixth to one tenth of the length of the middle part (12) between the two edges (10).

6. A puncture-resistant tire according to claim 5, characterized in that: The edge (10) extends toward both sides of the tire inner wall (2), and the thickness gradually decreases until it reaches 0, forming a transition.

7. A tire with good puncture resistance as claimed in claim 1, characterized in that: The tire body (1) has a tire sidewall rubber layer (11), and a toe steel wire (13) is embedded in the tire sidewall rubber layer (11) near the end.

8. A tire with good puncture resistance as claimed in claim 1, characterized in that: The stab-proof layer (4) is made of nano-adhesive tape.

9. A method for manufacturing a tire with good puncture resistance, characterized in that: include: A tire body (1) is formed in a mold, and an inner wall (2) of the tire body (1) is provided with an integrated protrusion (3); An opening is opened on the puncture-proof layer (4), and then the layer is closely attached to the tire inner wall (2) and the protrusion (3) is placed on the opening; The tire body (1) with the puncture-proof layer (4) is placed in a vulcanizer and vulcanized under set conditions, so that the puncture-proof layer (4) and the tire body (1) are combined and finally adhered to each other.

10. The method for manufacturing a tire with good puncture resistance as claimed in claim 9, characterized in that: The set conditions are as follows: the vulcanization temperature is 160-170° C., the vulcanization pressure is 15-25 MPa, and the vulcanization time is 25-35 min.

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