Manufacturing method of novel tubular tire and tire thereof

Abstract

The invention provides a manufacturing method of a novel tubular tire and the tire thereof, and relates to the field of bicycle tire manufacturing. The method comprises the following steps that S01, the reinforcing lining is woven into a sleeve shape; manufacturing the inner tube into a strip tube shape; s05, enabling the inner tube to penetrate into the reinforced lining; s10, the two ends of the inner tube are connected, so that the inner tube becomes an annular tire body; and S15, wrapping the outer tire and fixing the outer tire on the outer layer of the reinforced lining. According to the method, the defects of high labor cost and high defective rate due to the fact that a cloth piece sewing mode is adopted for the reinforcing lining of an existing tubular tire are overcome, the labor cost in the tire production process is reduced, the finished product rate of products can be increased, and the service life of the products is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle tire manufacturing, and in particular to a manufacturing method of a novel tubular tire and the tire. Background Art

[0002] Tubular tires, also known as tubular tires, are a type of tire used on road bikes. Unlike clincher tires, which typically have separate inner and outer tubes, tubular tires combine the inner and outer tubes. The inner tube is tightly encased in the outer tube, and the inner edge of the outer tube is bonded to the rim. Tubular tires eliminate the need for clincher tires, resulting in lighter rims. Furthermore, the tight encapsulation of the inner tube within the outer tube improves stress distribution and provides a superior ride feel, making them popular with both professional and enthusiast riders.

[0003] Existing tubular tires all feature a reinforcing lining between the inner tube and outer tube, which provides some protection against punctures and increases the inner tube's ability to withstand pressure. During tire manufacturing, this reinforcing lining is typically wrapped around the outer surface of the inner tube in the form of a cloth sheet. The ends of the cloth sheet are then sewn together to form a sleeve that wraps around the inner tube. This sewn sleeve must maintain equal diameters from front to back, fit closely to the outer edge of the inner tube, and be protected from punctures by being too close to the inner tube. Therefore, the sewing process requires very high technical requirements, resulting in a high labor cost and a relatively high rate of defective products. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing tubular tire reinforcement lining which results in high labor costs and high defective product rate due to the use of cloth pieces sewing method.

[0005] To solve the above technical problems, the present application provides a novel method for manufacturing a tubular tire, comprising the following steps: S01: Weaving the reinforcing lining 1 into a sleeve shape; making the inner tube 2 into a strip tube shape; S05: insert the inner tube 2 into the reinforcing lining 1; S10: Connecting the two ends of the inner tube 2 to form an annular carcass of the inner tube 2; S15: Wrap and fix the tire casing 7 on the outer layer of the reinforcing liner 1 .

[0006] Furthermore, between steps S05 and S10 , the method further includes step S09 : rolling up both ends of the reinforcing liner 1 , thereby exposing both ends of the inner tube 2 .

[0007] Furthermore, between steps S10 to S15 , step S11 is further included: restoring the two ends of the reinforcing lining 1 to be flat, and sewing the two ends of the reinforcing lining 1 .

[0008] Furthermore, between steps S01 to S05, step S04 is also included: curling or folding the inner tube 2 in the direction of the cross section.

[0009] Furthermore, between steps S01 to S04, the process further includes step S03: installing an air nozzle 6 on the inner tube 2; and opening an air nozzle through hole on the reinforcing liner 1; Between steps S05 and S10, step S06 is also included: unfolding the inner tube 2 and passing the air nozzle 6 through the air nozzle through hole.

[0010] Furthermore, between steps S01 to S05 , the method further includes step S02 : inserting the explosion-proof disc 3 into the inner tube 2 .

[0011] A tire is manufactured using the aforementioned method for manufacturing a novel tubular tire.

[0012] Furthermore, when the inner tube 2 is provided with the explosion-proof disc 3, when viewed from a cross-section, the two ends of the explosion-proof disc 3 overlap the two inner side walls of the inner tube 2, so that the inner cavity of the inner tube 2 is divided into a first cavity 8 close to the inner side of the tire and a second cavity 9 close to the outer side of the tire. A vent hole 10 is provided on the explosion-proof disc 3 to connect the first cavity 8 and the second cavity 9. When a hole appears in the inner tube 2 within the second cavity 9, as the air pressure in the second cavity 9 drops sharply, the air pressure in the first cavity 8 pushes the explosion-proof plate 3 toward the hole, and finally makes the explosion-proof plate 3 fit with the inner tube 2 at the hole.

[0013] Furthermore, the vent holes 10 are semicircular holes with an open structure and are arranged at intervals on both sides of the explosion-proof disk 3 ; the vent holes 10 on both sides are alternately arranged along the length direction of the explosion-proof disk 3 .

[0014] Furthermore, the two ends of the explosion-proof disc 3 are in a disconnected state.

[0015] By adopting the above technical solution, the present invention has the following technical effects: This method improves the existing production process of sewing reinforcing linings using fabric sheets. This method can utilize existing sleeve weaving equipment to weave a sleeve-shaped reinforcing lining of the desired size, thereby eliminating manual sewing processes and improving the dimensional accuracy of the sleeve-shaped reinforcing lining. This method avoids the large dimensional deviations that can occur during manual sewing. In particular, it prevents the sewing worker from accidentally piercing the inner tube due to the shielding effect of the reinforcing lining when wrapped around the inner tube, thereby improving the yield rate. Furthermore, the integrally woven reinforcing lining offers increased strength, completely eliminating the problem of suture thread unraveling during use and extending the product's service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a side view structural diagram of Steps S01, S02 and S05 of Example 1 of the present invention; Figure 2 This is a side view schematic diagram of the structure of Example 1 of the present invention in steps S09 and S10; Figure 3 This is a schematic diagram of the cross-sectional structure of the tire before wrapping in step S15 of Example 1 of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the tire after wrapping in step S15 of Example 1 of the present invention; Figure 5 This is a schematic diagram of the top view of the explosion-proof disk according to Example 2 of the present invention.

[0018] Description of reference numerals: 1-reinforced lining, 2-inner tube, 3-explosion-proof disk, 4-folding area, 5-tube port, 6-air nozzle, 7-outer tube, 8-first cavity, 9-second cavity, 10-vent. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted in the description of the present invention that the coordinate system used in this specification when describing the orientation is determined by the posture of the corresponding main view, and the naming of the observation angle of the corresponding view is also based on this. Therefore, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and so on in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0023] This embodiment provides a method for manufacturing a new tubular tire.

[0024] In one embodiment, Figures 1 to 4 As shown, the following steps are included: S01: Weave the reinforcing lining 1 into a sleeve shape; and make the inner tube 2 into a strip tube shape.

[0025] S05: Insert the inner tube 2 into the reinforcing liner 1.

[0026] S10: Connect the two ends of the inner tube 2 to form an annular carcass of the inner tube 2.

[0027] S15: Wrap and fix the tire casing 7 on the outer layer of the reinforcing liner 1 .

[0028] The inner tube 2 is preferably made of polyurethane, while the reinforcing liner 1 is preferably made of nylon. This ensures that the tire as a whole has superior strength. After the outer tire 7 is wrapped, it is also preferable to apply glue to the outer surface of the outer tire 7, then adhere a tread layer with improved wear resistance and strength, and use a low-temperature vulcanization process at 110°C to further enhance the overall performance of the tire.

[0029] The important technical advantage of this method is that it improves the production process of the original reinforcing lining 1 using cloth sheets for sewing. This method can use existing sleeve weaving equipment to weave a sleeve-shaped reinforcing lining 1 of the desired size, thereby saving the manual sewing process and improving the dimensional accuracy of the sleeve-shaped reinforcing lining 1. It avoids the large dimensional deviations that are prone to manual sewing. In particular, it avoids the situation where the sewing worker accidentally penetrates the inner tube due to the shielding effect of the reinforcing lining 1 when wrapping the inner tube 2, thereby improving the yield rate. In addition, the overall woven reinforcing lining 1 has higher strength, completely eliminating the problem of the seam thread coming apart during use, thereby extending the product life.

[0030] Based on the above embodiment, in a preferred embodiment, between steps S05 to S10, step S09 is further included: Figure 2 As shown, the ends of the reinforcing liner 1 are rolled up to form folded areas 4, exposing the two ends of the inner tube 2, namely the tube ends 5. This arrangement facilitates subsequent connection of the two ends of the inner tube 2. Because the currently effective carcass connection method uses welding technology that heats the carcass rubber, the reinforcing liner 1 wrapped around the ends of the inner tube 2 hinders heat transfer and reduces welding efficiency. Therefore, the additional step of rolling up the reinforcing liner 1 at the ends of the inner tube 2, while adding a process step, brings the advantages of improving overall efficiency and enhancing the quality of the finished product.

[0031] Based on the above embodiment, in a preferred embodiment, between steps S10 and S15, step S11 is further included: restoring the two ends of the reinforcing lining 1 to be flat, and sewing the two ends of the reinforcing lining 1. Although the reinforcing lining 1 mainly bears radial force, during the continuous rolling of the wheel, as an intermediate link in power transmission, relative displacement is easily generated between the reinforcing lining 1 and the inner tube 2, resulting in a gap between the two ends of the reinforcing lining 1, and then the reinforcing and protective effects of the inner tube are lost. Therefore, after the inner tube 2 is connected, it is also preferred to connect the two ends of the reinforcing lining 1. Although sewing is involved here, it is only for processing the joints, not for sewing along the entire length of the carcass as in the prior art, so the overall efficiency is still improved.

[0032] Based on the above embodiment, in a preferred embodiment, between steps S01 and S05, a further step S04 is included: curling or folding the inner tube 2 in the cross-sectional direction. Because the diameter of the sleeve-shaped reinforcing liner 1 matches the outer diameter of the inner tube 2, even if the two collapse into two layers due to lack of inflation or support, their width dimensions remain similar. Therefore, if the untreated inner tube 2 is directly placed into the reinforcing liner 1 for insertion, the resistance will be very large. However, this embodiment utilizes the foldable nature of the inner tube 2 when uninflated, folding or curling it in the cross-section, thereby reducing its width and facilitating the insertion operation.

[0033] Based on the above embodiment, in a preferred embodiment, between steps S01 to S04, a step S03 is further included: installing a valve 6 on the inner tube 2; and a valve hole is opened on the reinforcing liner 1. Between steps S05 to S10, a step S06 is further included: unfolding the inner tube 2 and passing the valve 6 through the valve hole. Figure 2 It should be noted that Figure 2The reason why the air nozzle 6 faces outward is to facilitate related operations. After that, you only need to flip the inner and outer cotton of the tire body to form a normal configuration with the air nozzle 6 facing inward. As an object protruding from the inner tube 2, the air nozzle 6 undoubtedly hinders the process of inserting the inner tube 2 into the reinforcing liner 1. Although it is optional to drill a hole in the reinforcing liner 1 to install the air nozzle 6 after the insertion operation, the air nozzle 6, as an important component related to the air tightness of the tire body, should preferably be installed without being interfered with by the reinforcing liner 1. Then, taking advantage of the foldable and curlable nature of the uninflated inner tube 2, the air nozzle 6 is rolled into the curled inner tube 2, and then the insertion operation is carried out. This ensures the air tightness of the product without reducing the efficiency of the insertion operation.

[0034] Based on the above embodiment, in a preferred embodiment, as Figure 1 As shown, between steps S01 to S05, step S02 is further included: inserting the explosion-proof disk 3 into the inner tube 2. The relevant content of the explosion-proof disk 3 will be discussed in detail in the following embodiment 2. Example

[0035] This embodiment provides a tire manufactured using the method for manufacturing the novel tubular tire of embodiment 1. Because it is manufactured using the method of embodiment 1, it has corresponding technical advantages during manufacturing.

[0036] Based on the above embodiment, in a preferred embodiment, when the inner tube 2 is provided with a burst-proof plate 3, when observed from the cross section, that is, Figure 4 When viewed from the direction shown, the ends of the bursting disc 3 overlap the inner sidewalls of the inner tube 2, dividing the inner cavity of the inner tube 2 into a first cavity 8 near the inner side of the tube and a second cavity 9 near the outer side of the tube. A vent 10 is provided in the bursting disc 3, connecting the first cavity 8 and the second cavity 9. It should be noted that the overlapping ends of the bursting disc 3 do not need to be intentionally formed during the insertion of the bursting disc 3 into the inner tube 2, as the centrifugal force naturally generated during wheel rotation naturally creates this state due to the absence of the bursting disc 3 fixed in the inner tube 2.

[0037] Because tubular tires are integrated inner and outer tubes, a blowout requires the entire tire to be replaced, making replacement costs significantly higher than with clincher tires, which typically only require replacing the inner tube. Furthermore, tubular tires are glued to the wheel rim, making both removal and installation extremely time-consuming and labor-intensive, making them extremely inconvenient. Therefore, this embodiment utilizes the production method of Example 1, where the inner tube 2 is in an open, tubular state, thereby adding the step of inserting the explosion-proof disc 3 into the inner tube 2. This approach effectively addresses the explosion-proofing issues of tubular tires without significantly increasing the production process and impacting production efficiency.

[0038] The explosion-proof plate 3 of this embodiment is the same as other structures of the tire and can be made of elastic rubber. The explosion-proof principle can be found in Figure 4 When the inner tube 2 within the scope of the second cavity 9 is punctured by a foreign object, because the second cavity 9 and the first cavity 8 are connected through the vent 10, even if the foreign object is too long and pierces the bursting disc 3, it will not be unable to retreat like the inner tube 2 due to the tire pressure. Instead, the bursting disc 3 can retreat as the foreign object pierces it, thus avoiding being punctured. As the foreign object escapes from the inner tube 2, the air pressure in the second cavity 9 will drop sharply, and the air pressure in the first cavity 8 will push the bursting disc 3 toward the hole. From a cross-sectional view, the second cavity 9 is continuously squeezed and reduced, eventually causing the bursting disc 3 to adhere to the inner tube 2 at the hole, achieving explosion-proof and leak-proof sealing. Of course, simply relying on the bursting disc 3 to adhere to the inner tube 2 will inevitably cause the tire to continue to deflate, but this can at least reduce the risk of loss of control caused by rapid tire deflation when the vehicle is driving fast. Furthermore, when combined with the tire sealant commonly used by riders for temporary tire repairs, especially if the tire is pre-filled with sealant, the dual effects of the puncture-proof disc 3 and the sealant's adhesion can quickly seal the leak in the event of a flat tire, allowing the rider to continue riding. It should be noted that while sealant can also provide leak-proofing and explosion-proofing, it is only suitable for smaller holes or when foreign matter is completely trapped in the hole. For larger holes, the sealant will be ineffective. However, the puncture-proof disc 3 of this embodiment, because it adheres to the inner tube 2, can block larger holes, thereby improving the tire's explosion-proof performance.

[0039] Based on the above embodiment, in a preferred embodiment, as Figure 5 As shown, the vents 10 are semicircular, open holes spaced apart on either side of the rupture disc 3. These vents 10 alternate along the length of the disc 3, meaning that after one vent 10 is placed on one side, the next vent 10 is placed on the opposite side. This arrangement helps maintain the integrity of the disc 3 as much as possible, as the disc 3 seals leaks by fitting tightly against the inner tube 2 at the site of the hole. Therefore, a larger, more integrated disc 3 can handle larger holes, improving its explosion-proof and leak-proof capabilities. However, the presence of vents 10, which penetrate the disc 3, would undoubtedly compromise its integrity. In this embodiment, the semicircular vents 10 are arranged at the side edges of the explosion-proof disc 3. This ensures that the integrity of the central area of ​​the explosion-proof disc 3 is maintained while ensuring connectivity. Moreover, even for the side areas, due to the alternating arrangement of the vents 10, a sufficiently large width can be retained at the same length position of the explosion-proof disc 3, thereby providing a sufficiently large piece of filling material for plugging leaks.

[0040] Based on the above embodiment, in a preferred embodiment, the ends of the explosion-proof disc 3 are disconnected. That is, the operation of connecting the explosion-proof disc 3 is not performed during the process of connecting the inner tube 2. Although this disconnected explosion-proof disc 3 does not form a complete ring around the circumference of the tire, resulting in a gap in the scope of explosion-proof and leak-proof plugging, the scope is very small, and the loss is not significant in terms of probability. However, this disconnected, strip-shaped explosion-proof disc 3 is not constrained by the inner tube 2 and can move continuously along its inner tube length. Therefore, even if the explosion-proof disc 3 has already been attached to the inner tube 2 to plug a leak or even become stuck to the tire sealant, the remaining portion of the explosion-proof disc 3 that is not involved in plugging the leak can still perform its explosion-proof and leak-proof function. Therefore, if puncture holes occur at other locations, the remaining explosion-proof disc 3 can still quickly plug them, thus significantly improving the tire's continuous explosion-proof capability.

[0041] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A method for manufacturing a new tubular tire, characterized in that: The steps include: S01: Weaving the reinforcing lining (1) into a sleeve shape; making the inner tube (2) into a strip tube shape; S05: inserting the inner tube (2) into the reinforcing lining (1); S10: connecting the two ends of the inner tube (2) to form the inner tube (2) into a ring-shaped carcass; S15: Wrap the outer tire (7) and fix it on the outer layer of the reinforcing lining (1).

2. The method for manufacturing a new tubular tire according to claim 1, characterized in that: Between steps S05 and S10, step S09 is also included: rolling up the two ends of the reinforcing liner (1) to expose the two ends of the inner tube (2).

3. The method for manufacturing a new tubular tire according to claim 2, characterized in that: Between steps S10 and S15, step S11 is also included: restoring the two ends of the reinforcing lining (1) to be flat, and sewing the two ends of the reinforcing lining (1) together.

4. The method for manufacturing a new tubular tire according to claim 1, characterized in that: Between steps S01 to S05, the method further includes step S04: curling or folding the inner tube (2) in the direction of the cross section.

5. The method for manufacturing a new tubular tire according to claim 4, characterized in that: Between steps S01 and S04, the method further includes step S03: installing an air nozzle (6) on the inner tube (2); and providing an air nozzle through hole on the reinforced lining (1); Between steps S05 and S10, step S06 is also included: unfolding the inner tube (2) and passing the air nozzle (6) through the air nozzle through hole.

6. The method for manufacturing a new tubular tire according to any one of claims 1 to 5, characterized in that: Between steps S01 to S05, step S02 is also included: inserting the explosion-proof plate (3) into the inner tube (2).

7. A tire, characterized in that: The novel tubular tire is manufactured using the manufacturing method according to any one of claims 1 to 6.

8. The tire according to claim 7, characterized in that When the explosion-proof plate (3) is inserted into the inner tube (2), when viewed from the cross section, the two ends of the explosion-proof plate (3) overlap the two inner side walls of the inner tube (2), so that the inner cavity of the inner tube (2) is divided into a first cavity (8) close to the inner side of the tire and a second cavity (9) close to the outer side of the tire, and a vent (10) is provided on the explosion-proof plate (3) to connect the first cavity (8) and the second cavity (9); When a hole appears in the inner tube (2) within the range of the second chamber (9), as the air pressure in the second chamber (9) drops sharply, the air pressure in the first chamber (8) pushes the explosion-proof plate (3) toward the hole, and finally causes the explosion-proof plate (3) to fit with the inner tube (2) at the hole.

9. The tire according to claim 8, characterized in that The vent holes (10) are semicircular holes with an open structure and are arranged at intervals on both sides of the explosion-proof plate (3); the vent holes (10) on both sides are arranged alternately along the length direction of the explosion-proof plate (3).

10. The tire according to claim 8 or 9, characterized in that The two ends of the explosion-proof plate (3) are in a disconnected state.

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