One-step forming process for tire bladder

Abstract

The present invention relates to the technical field of automobile tires, and in particular to a one-step forming process for a tire bladder, comprising laminating a main film and a cord to a main drum and an auxiliary drum respectively to form a main cord rubber-coated cylinder and an auxiliary drum cord rubber-coated cylinder; performing forward and reverse wrapping actions on the main cord rubber-coated cylinder and the auxiliary drum cord rubber-coated cylinder; moving the auxiliary drum station, assembling the auxiliary drum cord rubber-coated cylinder with the main cord rubber-coated cylinder to form a bladder body, and wrapping a mesh cloth; finally, wrapping the bladder body with water-wrapped cloth and placing it into a mold for vulcanization; and by arranging the bladder body on the main drum and the auxiliary drum respectively, performing forward and reverse wrapping actions, and then moving the auxiliary drum station to complete the docking of the main cord rubber-coated cylinder and the auxiliary drum cord rubber-coated cylinder, the transfer of the bladder body to different stations is avoided, and the technical problem of the existing tire bladder forming process requiring the bladder body to be transported to different stations is solved, thereby avoiding positioning process deviation and reducing the probability of workpiece contamination.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile tires, and in particular to a one-step molding process for tire bladders. Background Art

[0002] The tire building machine's roll-back action is a key component of the tire building process. Currently used tire building machines can be categorized as bladder drum machines and mechanical drum machines, based on the roll-back method. The roll-back action of a bladder drum machine relies on the inflation of the bladder to radially expand the tire's sidewall and other components from a cylindrical shape and attach them to the tire's sidewall, forming the tire's sidewall. As a consumable tool in the tire manufacturing industry, the demand for bladders has grown with increasing tire production.

[0003] The current tire bladder manufacturing process involves three steps: rubber tube lamination, bladder assembly, and vulcanization. The rubber tube (film and carcass cord) lamination process is completed on a rotating drum. After completion, the plastic sheet (or PE paper) remains on the bottom of the film at the innermost part of the rubber tube. This process only completes the production of the cylindrical bladder body. This cylinder is then removed from the drum, folded in an external space, and transferred to the bladder assembly drum, where it is assembled with the front end of the bladder. Finally, the bladder's external accessories are attached, followed by wrapping the bladder with water-resistant cloth, completing the bladder lamination and assembly process.

[0004] However, the current tire bladder molding process requires the bladder body to be transferred between different workstations, which can easily lead to process deviations in positioning or stretching, as well as workpiece contamination. Summary of the Invention

[0005] The purpose of the present invention is to provide a one-step tire capsule molding process to solve the technical problems that the existing tire capsule molding process requires the capsule body to be transferred between different workstations, which easily leads to process deviations in positioning or stretching, and workpiece contamination.

[0006] In a first aspect, the present invention provides a one-step forming process for a tire bladder, comprising the following steps:

[0007] Step 1: Laminating the main film and the cord fabric to the main drum of the main drum station to form a main cord fabric rubber-coated cylinder, and laminating the auxiliary drum film and the cord fabric to the auxiliary drum of the auxiliary drum station to form an auxiliary drum cord fabric rubber-coated cylinder;

[0008] Step 2: After the main cord rubber coating cylinder is sequentially completed with the forward wrapping action and the reverse wrapping action, the auxiliary drum cord rubber coating cylinder is sequentially completed with the forward wrapping action and the reverse wrapping action;

[0009] Step 3: Move the auxiliary drum station, connect the main drum with the auxiliary drum, assemble the auxiliary drum curtain rubber cylinder with the main curtain rubber cylinder to form the capsule body, and wrap the mesh cloth;

[0010] Step 4: Wrapping the capsule body with water-coated cloth and putting it into a mold for vulcanization.

[0011] Furthermore, after the main cord rubber coating cylinder is sequentially wrapped with the forward wrapping action and the reverse wrapping action, the main cord rubber coating cylinder is wrapped with water cloth;

[0012] After the forward wrapping action and the reverse wrapping action are completed in sequence on the auxiliary drum cord rubber coating cylinder, the auxiliary drum cord rubber coating cylinder is wound with water cloth.

[0013] Furthermore, the forward wrapping action includes contracting the finger-shaped pieces on the forward and reverse wrapping device to wrap the edge curtain fabric reserved on the inner side around the film along the shape of the mold.

[0014] Furthermore, the anti-packetization action includes:

[0015] After the wrapping action is completed, the filling rubber strip is wound around the position of the retracted cord rubber covering cylinder;

[0016] The finger-shaped pieces are opened, and the reverse-wrapped capsules are inflated to push the materials upward to reverse and fit.

[0017] Furthermore, after the main cord rubber-coated cylinder is wrapped with the water-coated cloth, the main cord rubber-coated cylinder is folded, and one end of the main cord rubber-coated cylinder is folded over the other end of the main cord rubber-coated cylinder, so that the main cord rubber-coated cylinder forms a closed end and an open end;

[0018] After the auxiliary drum curtain cloth covering rubber cylinder is wrapped with water-coated cloth, the auxiliary drum curtain cloth covering rubber cylinder is folded, and one end of the auxiliary drum curtain cloth covering rubber cylinder is folded over the other end of the auxiliary drum curtain cloth covering rubber cylinder to form a closed end and an open end of the auxiliary drum curtain cloth covering rubber cylinder.

[0019] Furthermore, the said moving the auxiliary drum station and docking the main drum with the auxiliary drum comprises the following steps:

[0020] A transition inner mold is installed on one side of the main drum close to the open end of the main cord rubber coating cylinder;

[0021] Move the auxiliary drum station so that the axis of the auxiliary drum is collinear with the axis of the main drum, and the auxiliary drum is close to the main drum on one side of the open end of the auxiliary drum cord rubber coating cylinder;

[0022] The main drum, the auxiliary drum and the transition inner mold are connected.

[0023] Furthermore, assembling the auxiliary drum cord rubber-coated cylinder and the main drum cord rubber-coated cylinder to form a capsule body includes:

[0024] The folded portion of the auxiliary drum cord rubber-coated cylinder is connected to the folded portion of the main cord rubber-coated cylinder.

[0025] Furthermore, the tire capsule one-step molding process further includes:

[0026] After the vulcanization of the capsule body is completed, the water-wrapped cloth and the mesh cloth are torn off, and a layer of silicone rubber is sprayed on the outer surface of the capsule body.

[0027] Compared with the prior art, the present invention provides a one-step forming process for a tire bladder, comprising laminating the main body film and the cord fabric to the main rotating drum of the main drum station to form a main cord fabric rubber-coated cylinder, laminating the auxiliary drum film and the cord fabric to the auxiliary rotating drum of the auxiliary drum station to form an auxiliary drum cord fabric rubber-coated cylinder; after sequentially completing the forward wrapping action and the reverse wrapping action on the main cord fabric rubber-coated cylinder, and sequentially completing the forward wrapping action and the reverse wrapping action on the auxiliary drum cord fabric rubber-coated cylinder; moving the auxiliary drum station, docking the main rotating drum with the auxiliary rotating drum, and assembling the auxiliary drum cord fabric rubber-coated cylinder with the main cord fabric rubber-coated cylinder to form a bladder body, and winding the mesh cloth ; Finally, the bladder body is wrapped with water cloth and put into the mold for vulcanization; by placing the bladder body on the main drum and the auxiliary drum respectively, performing forward and reverse wrapping actions and then moving the auxiliary drum station to complete the docking of the main cord rubber coating cylinder and the auxiliary drum cord rubber coating cylinder, and finally putting the docked bladder body into the mold for vulcanization, the transfer of the bladder body to different stations is avoided, and the technical problem of the existing tire bladder molding process that requires the bladder body to be transported to different stations is circumvented, thereby avoiding the positioning or stretching process deviation caused by the transfer of the bladder body and reducing the probability of workpiece contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 This is a process flow chart of a one-step forming process for a tire bladder provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0035] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to 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.

[0036] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a one-time forming process for a tire capsule, comprising the following steps: step one, laminating the main body film and the cord fabric to the main drum of the main drum station to form a main cord fabric rubber-coated cylinder, and laminating the auxiliary drum film and the cord fabric to the auxiliary drum of the auxiliary drum station to form an auxiliary drum cord fabric rubber-coated cylinder; step two, after sequentially completing the forward wrapping action and the reverse wrapping action on the main cord fabric rubber-coated cylinder, the forward wrapping action and the reverse wrapping action on the auxiliary drum cord fabric rubber-coated cylinder are sequentially completed; step three, moving the auxiliary drum station, docking the main drum with the auxiliary drum, and assembling the auxiliary drum cord fabric rubber-coated cylinder and the main cord fabric rubber-coated cylinder to form a capsule body, and winding the mesh cloth; step four, wrapping the capsule body with water-wrapped cloth and putting it into the mold for vulcanization.

[0038] That is, the tire bladder one-time forming process provided by the embodiment of the present invention, by respectively placing the bladder body on the main drum and the auxiliary drum to perform forward and reverse wrapping actions, and then moving the auxiliary drum station to complete the docking of the main cord rubber coating cylinder and the auxiliary drum cord rubber coating cylinder, and finally putting the docked bladder body into the mold for vulcanization, avoids the transfer of the bladder body to different stations, and circumvents the technical problem of the existing tire bladder forming process that requires the bladder body to be transported to different stations, thereby avoiding the positioning or stretching process deviation caused by the transfer of the bladder body and reducing the probability of workpiece contamination.

[0039] Specifically, an embodiment of the present invention provides a one-time forming process for a tire bladder, which first divides the film and cord that make up the rubber cylinder into a main drum part and an auxiliary drum part. The main film and cord are bonded to the main drum of the main drum station to form a main cord rubber cylinder, while the auxiliary drum film and cord are bonded to the auxiliary drum of the auxiliary drum station to form an auxiliary drum cord rubber cylinder. The main drum and the auxiliary drum are independent of each other and rotate separately to facilitate the respective operations of the main cord rubber cylinder and the auxiliary drum cord rubber cylinder. After the main cord rubber cylinder and the auxiliary drum cord rubber cylinder are formed, the two rubber cylinders can be subjected to forward and reverse wrapping actions respectively, thereby improving the stability and durability of the bladder. After the forward and reverse wrapping of the main cord rubber cylinder and the auxiliary drum cord rubber cylinder are completed, the auxiliary drum station can be moved, the auxiliary drum can be moved to the main drum, and the two can be docked. The bladder body is then assembled with the auxiliary drum's cord-coated rubber drum and the main drum's cord-coated rubber drum. This allows both rubber-coated drums, which comprise the bladder body, to rotate on the original drum, avoiding secondary positioning caused by shifting the rubber drum and thus reducing errors. Once the bladder body is formed, the mesh and stretch fabric required for the process are attached to its outer surface. The mesh fabric serves as a reinforcement layer embedded within the bladder rubber, providing support and enhancing the bladder's structural strength and resistance to deformation. The stretch fabric, through its elastic fibers, is bonded to the rubber to form a flexible support structure that withstands repeated inflation and contraction during the vulcanization process, dissipating internal stress and preventing localized tearing or permanent deformation caused by high temperature and high pressure. Furthermore, the elastic cushioning effect reduces mechanical fatigue wear on the rubber layer during vulcanization, delaying material aging caused by repeated deformation and reducing the frequency of bladder replacement. Finally, the bladder body is wrapped with water-coated cloth and vulcanized. In this embodiment, the water-repellent cloth is a nylon lining cloth soaked in water. During vulcanization, the bladder body expands and is restrained by the water-repellent cloth. This allows the bladder body to vulcanize under the restraining pressure of the water-repellent cloth, ensuring uniform material distribution and smooth internal and external surfaces after vulcanization. After vulcanization is complete, the water-repellent cloth and mesh cloth are removed to obtain the fully vulcanized bladder.

[0040] Furthermore, the forward wrapping action includes contracting the finger-shaped pieces on the forward and reverse wrapping device to wrap the edge curtain fabric reserved on the inner side around the film along the shape of the mold.

[0041] Specifically, after the main and auxiliary drum cord rubber drums are prepared, they can be wrapped in a forward and reverse wrapping process. This process is performed by a forward and reverse wrapping device, which features finger-shaped flaps on the forward wrapping mechanism. These fingers wrap the reserved edge cord on the inner side of the rubber drum around the rubber drum, following the mold shape. This forward wrapping process effectively optimizes cord fit, enhances tire bead support, and improves automation efficiency.

[0042] Furthermore, the reverse wrapping action includes wrapping a filling strip around the retracted cord rubber tube after the forward wrapping action is completed; opening the finger-shaped piece and inflating the reverse wrapping capsule to push the material upward for reverse wrapping and adhesion.

[0043] Specifically, the reverse wrapping action can be completed by the finger-shaped pieces and reverse wrapping airbags on the forward and reverse wrapping devices. After the forward wrapping action is completed, the main curtain fabric rubber cylinder and the auxiliary drum curtain fabric rubber cylinder can be reversed separately. Before the reverse wrapping action, it is first necessary to insert the rubber strip at the reverse wrapping position, then open the finger-shaped pieces, and inflate the reverse wrapping airbag. This allows the material to be reversed and adhered upward along the finger-shaped pieces with the rubber strip as the folding line, including the curtain layer in the reverse direction. By reverse wrapping the main curtain fabric rubber cylinder and the auxiliary drum curtain fabric rubber cylinder separately, the sealing of the capsule can be effectively improved, the capsule structure can be strengthened, and the overall durability of the capsule can be improved in conjunction with the forward wrapping action.

[0044] Preferably, after the main cord rubber coating cylinder completes the forward wrapping action and the reverse wrapping action in sequence, the main cord rubber coating cylinder is wrapped with water cloth; after the auxiliary drum cord rubber coating cylinder completes the forward wrapping action and the reverse wrapping action in sequence, the auxiliary drum cord rubber coating cylinder is wrapped with water cloth.

[0045] Specifically, after the main and auxiliary drum cord rubber-coating cylinders have been subjected to forward and reverse wrapping, they can then be individually wrapped with water-coated cloth. This water-coated cloth wrapping, unlike the water-coated cloth wrapping of the bladder body, is the first water-coated cloth wrapping step in the one-step tire bladder molding process, and its process flow is essentially the same as the second water-coated cloth wrapping step. This initial water-coated cloth wrapping of both rubber-coating cylinders effectively ensures stable internal rubber pressure during the bladder vulcanization process.

[0046] Furthermore, after the main cord rubber cylinder is wrapped with water-coated cloth, the main cord rubber cylinder is folded, and one end of the main cord rubber cylinder is folded over the other end of the main cord rubber cylinder, so that the main cord rubber cylinder forms a closed end and an open end; after the auxiliary drum cord rubber cylinder is wrapped with water-coated cloth, the auxiliary drum cord rubber cylinder is folded, and one end of the auxiliary drum cord rubber cylinder is folded over the other end of the auxiliary drum cord rubber cylinder, so that the auxiliary drum cord rubber cylinder forms a closed end and an open end.

[0047] Specifically, first, one end of the main drum cord rubber-coated cylinder is folded over the other end of the main drum cord rubber-coated cylinder, forming a closed end and an open end. This creates a "C"-shaped cross-section with one end open. Correspondingly, the auxiliary drum cord rubber-coated cylinder is folded over, with one end folded over the other end of the auxiliary drum cord rubber-coated cylinder, forming a closed end and an open end. This creates a "C"-shaped cross-section with one end open. After folding both, the entire capsule body is formed into two symmetrical halves. This facilitates the final docking of the main drum cord rubber-coated cylinder and the auxiliary drum cord rubber-coated cylinder to form a complete capsule body.

[0048] Furthermore, moving the auxiliary drum station and docking the main drum with the auxiliary drum includes the following steps: installing a transition inner mold on the side of the main drum close to the open end of the main cord rubber-coated cylinder; moving the auxiliary drum station so that the axis of the auxiliary drum is collinear with the axis of the main drum, and the auxiliary drum is close to the main drum on the side close to the open end of the auxiliary drum cord rubber-coated cylinder; connecting the main drum, the auxiliary drum and the transition inner mold.

[0049] Specifically, the auxiliary drum station can be moved by means of guide rails and a rotating platform, so that the auxiliary drum station can be moved to one side of the main drum, and the axis of the auxiliary drum is arranged in line with the axis of the main drum. The side of the auxiliary drum close to the open end of the auxiliary drum curtain rubber coating cylinder is close to the main drum, and the open end of the auxiliary drum curtain rubber coating cylinder on the auxiliary drum is arranged opposite to the open end of the main curtain rubber coating cylinder on the main drum. The transition inner mold is arranged between the main drum and the auxiliary drum, and is connected to the main drum and the auxiliary drum respectively by bolts and connecting rods, thereby forming a mold cavity for the capsule clamping position during rubber vulcanization. In this way, the main drum and the auxiliary drum are docked, providing sufficient conditions for the docking of the auxiliary drum curtain rubber coating cylinder and the main curtain rubber coating cylinder, avoiding the transfer of the auxiliary drum curtain rubber coating cylinder and the main curtain rubber coating cylinder, which causes secondary positioning errors.

[0050] Furthermore, assembling the auxiliary drum cord rubber-coated cylinder and the main cord rubber-coated cylinder to form the capsule body includes: connecting the folded portion of the auxiliary drum cord rubber-coated cylinder with the folded portion of the main cord rubber-coated cylinder.

[0051] Specifically, after the main drum, transition inner mold and auxiliary drum are connected, the folded part of the auxiliary drum cord rubber cylinder and the folded part of the main cord rubber cylinder can be connected together by wrapping the mesh cloth, thereby forming a complete bladder body to be vulcanized.

[0052] Preferably, the tire bladder one-step molding process further comprises: after the bladder body is vulcanized, removing the water-wrapped cloth and the mesh cloth, and spraying a layer of silicone rubber on the outer surface of the bladder body.

[0053] Specifically, silicone rubber is sprayed on the outer surface of the bladder body, in the area where the bladder contacts the tire bead, to isolate the bladder from the tire, thereby improving the separation efficiency between the bladder and the tire and facilitating the separation of the bladder from the tire after the tire is formed.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tire bladder one-step molding process, characterized in that: The following steps are involved: Step 1: Laminating the main film and the cord fabric to the main drum of the main drum station to form a main cord fabric rubber-coated cylinder, and laminating the auxiliary drum film and the cord fabric to the auxiliary drum of the auxiliary drum station to form an auxiliary drum cord fabric rubber-coated cylinder; Step 2: After the main cord rubber coating cylinder is sequentially completed with the forward wrapping action and the reverse wrapping action, the auxiliary drum cord rubber coating cylinder is sequentially completed with the forward wrapping action and the reverse wrapping action; Step 3: Move the auxiliary drum station, connect the main drum with the auxiliary drum, assemble the auxiliary drum curtain rubber cylinder with the main curtain rubber cylinder to form the capsule body, and wrap the mesh cloth; Step 4: Wrapping the capsule body with water-coated cloth and putting it into a mold for vulcanization.

2. The tire bladder one-step molding process according to claim 1, characterized in that: After the main cord rubber coating cylinder is sequentially wrapped with forward and reverse wrapping actions, the main cord rubber coating cylinder is wrapped with water cloth; After the forward wrapping action and the reverse wrapping action are completed in sequence on the auxiliary drum cord rubber coating cylinder, the auxiliary drum cord rubber coating cylinder is wound with water cloth.

3. The tire bladder one-step molding process according to claim 2, characterized in that: The positive packaging action includes: Contract the finger-shaped pieces on the front and back wrapping device to wrap the inner reserved edge curtain around the film along the mold shape.

4. The tire bladder one-step molding process according to claim 3, characterized in that: The anti-packet action includes: After the wrapping action is completed, the filling rubber strip is wound around the position of the retracted cord rubber covering cylinder; The finger-shaped pieces are opened and the reverse-wrapped capsule is inflated to push the material upward to reverse and fit.

5. The tire bladder one-step molding process according to claim 4, characterized in that: After the main cord rubber-coated cylinder is wrapped with the water-coated cloth, the main cord rubber-coated cylinder is folded, and one end of the main cord rubber-coated cylinder is folded over the other end of the main cord rubber-coated cylinder, so that the main cord rubber-coated cylinder forms a closed end and an open end; After the auxiliary drum curtain cloth covering rubber cylinder is wrapped with water-coated cloth, the auxiliary drum curtain cloth covering rubber cylinder is folded, and one end of the auxiliary drum curtain cloth covering rubber cylinder is folded over the other end of the auxiliary drum curtain cloth covering rubber cylinder to form a closed end and an open end of the auxiliary drum curtain cloth covering rubber cylinder.

6. The tire bladder one-step molding process according to claim 5, characterized in that: The said moving the auxiliary drum station and docking the main drum with the auxiliary drum comprises the following steps: A transition inner mold is installed on one side of the main drum close to the open end of the main cord rubber coating cylinder; Move the auxiliary drum station so that the axis of the auxiliary drum is collinear with the axis of the main drum, and the auxiliary drum is close to the main drum on one side of the open end of the auxiliary drum cord rubber coating cylinder; The main drum, the auxiliary drum and the transition inner mold are connected.

7. The tire bladder one-step molding process according to claim 6, characterized in that: Assembling the auxiliary drum curtain rubber-coated cylinder and the main drum curtain rubber-coated cylinder to form a capsule body includes: The folded portion of the auxiliary drum cord rubber-coated cylinder is connected to the folded portion of the main cord rubber-coated cylinder.

8. The tire bladder one-step forming process according to any one of claims 1 to 7, characterized in that: The tire bladder one-step molding process further includes: After the vulcanization of the capsule body is completed, the water-wrapped cloth and the mesh cloth are torn off, and a layer of silicone rubber is sprayed on the outer surface of the capsule body.

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