Tire capsule one-time forming process

Abstract

The invention relates to the technical field of automobile tires, in particular to a tire bladder one-time forming process which comprises the steps that a main rubber sheet and cord fabric are attached to a main rotary drum and an auxiliary rotary drum respectively, and a main cord fabric rubber-coated barrel and an auxiliary drum cord fabric rubber-coated barrel are formed; the main body cord fabric rubber coating cylinder and the auxiliary drum cord fabric rubber coating cylinder are positively and negatively coated; an auxiliary drum station is moved, an auxiliary drum cord fabric glue coating barrel and a main body cord fabric glue coating barrel are assembled to form a capsule main body, and gridding cloth is wound on the capsule main body; and finally, the capsule body is wound with water wrapping cloth and subjected to mold entering vulcanization. The capsule main bodies are arranged on the main rotary drum and the auxiliary rotary drum respectively to conduct forward and reverse wrapping actions, then the auxiliary drum station is moved to complete butt joint of the main body cord fabric rubber coating barrel and the auxiliary drum cord fabric rubber coating barrel, and transfer of the capsule main bodies on different stations is avoided; the technical problem that a capsule body needs to be transferred on different stations in an existing tire capsule forming process is solved, so that positioning process deviation is avoided, and the probability of workpiece pollution is reduced.

Description

Technical Field

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

[0002] The reverse packing action of the tire forming machine is a key point in the tire forming process. The tire forming machines currently in use can be divided into capsule drum forming machines and mechanical drum forming machines based on the reverse packing form. The reverse packing action of the capsule drum forming machine relies on the capsule inflation action to assist the tire's sidewall carcass and other parts to open radially from the cylindrical shape and then stick to the side of the tire to form the tire's sidewall part. As a consumable tooling auxiliary tool in the tire production industry, the demand for the molding capsule increases with the increase in the number of tires produced.

[0003] The existing tire bladder production process is divided into three processes: rubber tube lamination, bladder assembly, and vulcanization. The rubber tube (film plus skeleton cord) lamination process is completed on a rotating drum. After completion, the bottom of the film at the innermost part of the rubber tube still retains the plastic paper (or PE paper). This process only completes the production of a cylinder of the bladder body. After that, the cylinder is removed from the drum, the bladder body is folded in the external space, and then transferred to the bladder assembly drum, and the bladder assembly steps are completed on the assembly drum with the front part of the bladder. The last step is to mount the external accessories of the bladder, and then complete the operation of wrapping the bladder with water-wrapped cloth, which completes all the operations of bladder lamination and assembly.

[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 tire capsule one-step 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, as well as workpiece contamination.

[0006] In a first aspect, the present invention provides a tire bladder one-step molding process, comprising the following steps: Step 1: Laminating the main film and the cord fabric to the main rotating 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 rotating 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 subjected to the forward wrapping action and the reverse wrapping action, the auxiliary drum cord rubber coating cylinder is sequentially subjected to the forward wrapping action and the reverse wrapping action; Step 3, move the auxiliary drum station, connect the main drum with the auxiliary drum, and assemble the auxiliary drum curtain rubber-coated cylinder with the main curtain rubber-coated cylinder to form a capsule body, and wrap the mesh cloth; Step 4: Wrap the capsule body with water wrap cloth and perform in-mold vulcanization.

[0007] Further, after the positive wrapping action and the reverse wrapping action are sequentially completed on the main body cord rubber covering cylinder, perform water wrap cloth winding on the main body cord rubber covering cylinder; After the positive wrapping action and the reverse wrapping action are sequentially completed on the auxiliary drum cord rubber covering cylinder, perform water wrap cloth winding on the auxiliary drum cord rubber covering cylinder.

[0008] Further, the positive wrapping action includes contracting the finger-shaped pieces on the positive and reverse wrapping device, and wrapping the edge cord reserved inside along the shape of the mold on the rubber sheet.

[0009] Further, the reverse wrapping action includes: After completing the positive wrapping action, wind a filling rubber strip at the position of the contracted cord rubber covering cylinder; Open the finger-shaped pieces and inflate the reverse wrapping capsule to push the material to wrap and fit upward.

[0010] Further, after completing the water wrap cloth winding on the main body cord rubber covering cylinder, fold the main body cord rubber covering cylinder, and fold one end of the main body cord rubber covering cylinder onto the other end of the main body cord rubber covering cylinder, so that the main body cord rubber covering cylinder forms a closed end and an open end; After completing the water wrap cloth winding on the auxiliary drum cord rubber covering cylinder, fold the auxiliary drum cord rubber covering cylinder, and fold one end of the auxiliary drum cord rubber covering cylinder onto the other end of the auxiliary drum cord rubber covering cylinder, so that the auxiliary drum cord rubber covering cylinder forms a closed end and an open end.

[0011] Further, the steps of docking the main drum and the auxiliary drum at the auxiliary drum transfer station include: Install a transition inner mold on one side of the main drum close to the open end of the main body cord rubber covering cylinder; Transfer the auxiliary drum station so that the axis of the auxiliary drum is collinear with the axis of the main drum, and make the side of the auxiliary drum close to the open end of the auxiliary drum cord rubber covering cylinder close to the main drum; Connect the main drum, the auxiliary drum and the transition inner mold.

[0012] Further, assembling the auxiliary drum cord rubber covering cylinder and the main body cord rubber covering cylinder to form a capsule body includes; Connect the folded parts of the auxiliary drum cord rubber covering cylinder and the main body cord rubber covering cylinder.

[0013] Further, the one-step forming process of the tire capsule further includes; After the vulcanization of the capsule body is completed, tear off the water wrapping cloth and the mesh cloth, and spray a layer of silicone rubber on the outer side of the surface of the capsule body.

[0014] Compared with the prior art, a one-step forming process of a tire capsule provided by the present invention includes laminating a main body film and a curtain cloth to a main rotating drum at a main drum station to form a main body curtain cloth rubber-coated cylinder, laminating an auxiliary drum film and a curtain cloth to an auxiliary rotating drum at an auxiliary drum station to form an auxiliary drum curtain cloth rubber-coated cylinder; after sequentially completing the positive wrapping action and the reverse wrapping action on the main body curtain cloth rubber-coated cylinder, and after sequentially completing the positive wrapping action and the reverse wrapping action on the auxiliary drum curtain cloth rubber-coated cylinder; moving the auxiliary drum station, docking the main rotating drum and the auxiliary rotating drum, and assembling the auxiliary drum curtain cloth rubber-coated cylinder and the main body curtain cloth rubber-coated cylinder to form a capsule body, and winding a mesh cloth; finally, winding a water wrapping cloth on the capsule body and performing in-mold vulcanization; by separately arranging the capsule body on the main rotating drum and the auxiliary rotating drum to perform the positive and reverse wrapping actions respectively, then moving the auxiliary drum station to complete the docking of the main body curtain cloth rubber-coated cylinder and the auxiliary drum curtain cloth rubber-coated cylinder, and finally performing in-mold vulcanization on the docked capsule body, the transfer of the capsule body between different stations is avoided, and the technical problem that the existing tire capsule forming process requires the capsule body to be transferred between different stations is circumvented, thereby avoiding the process deviation of positioning or stretching caused by the transfer of the capsule body and reducing the probability of workpiece contamination. Description of the Drawings

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a process flow chart of a one-step forming process of a tire capsule provided by an embodiment of the present invention. Detailed Embodiments

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0018] Accordingly, 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 claimed invention, but merely represents selected embodiments of the present invention. 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 scope of protection of the present invention.

[0019] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. 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 of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0021] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0022] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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.

[0023] The following will describe in detail some embodiments of the present invention in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0024] Such as Figure 1As shown in the figure, the embodiment of the present invention provides a one - step forming process for a tire bladder, which includes the following steps: Step 1, attach the main body film and the cord fabric to the main rotating drum at the main drum station to form a main body cord - fabric rubber - covered cylinder, and attach the auxiliary drum film and the cord fabric to the auxiliary rotating drum at the auxiliary drum station to form an auxiliary drum cord - fabric rubber - covered cylinder; Step 2, after completing the positive wrapping action and the reverse wrapping action on the main body cord - fabric rubber - covered cylinder in sequence, and after completing the positive wrapping action and the reverse wrapping action on the auxiliary drum cord - fabric rubber - covered cylinder in sequence; Step 3, move the auxiliary drum station, dock the main rotating drum and the auxiliary rotating drum, and assemble the auxiliary drum cord - fabric rubber - covered cylinder and the main body cord - fabric rubber - covered cylinder to form a bladder body, and wind the mesh fabric; Step 4, wind the water - wrapping cloth on the bladder body and perform in - mold vulcanization.

[0025] That is, for the one - step forming process of the tire bladder provided by the embodiment of the present invention, by separately setting the bladder body on the main rotating drum and the auxiliary rotating drum to perform the positive wrapping and reverse wrapping actions respectively, then moving the auxiliary drum station to complete the docking of the main body cord - fabric rubber - covered cylinder and the auxiliary drum cord - fabric rubber - covered cylinder, and finally performing in - mold vulcanization on the docked bladder body, it avoids the transfer of the bladder body between different stations, circumvents the technical problem that the existing tire bladder forming process requires the bladder body to be transported between different stations, thereby avoiding the process deviation of positioning or stretching caused by the transfer of the bladder body and reducing the probability of workpiece contamination.

[0026] Specifically, for a one - step forming process of a tire bladder provided by an embodiment of the present invention, first, the rubber sheets and cord fabrics forming the rubber tube are divided into a main drum part and an auxiliary drum part. Among them, the main rubber sheet and the cord fabric are attached to the main rotating drum at the main drum station to form a main cord - covered rubber tube, while the auxiliary rubber sheet and the cord fabric are attached to the auxiliary rotating drum at the auxiliary drum station to form an auxiliary cord - covered rubber tube. The main rotating drum and the auxiliary rotating drum are independent of each other and rotate respectively, facilitating the respective operations on the main cord - covered rubber tube and the auxiliary cord - covered rubber tube. After forming the main cord - covered rubber tube and the auxiliary cord - covered rubber tube, the positive wrapping action and the reverse wrapping action can be sequentially performed on the two rubber tubes respectively to improve the stability and durability of the bladder. After the positive and reverse wrapping of the main cord - covered rubber tube and the auxiliary cord - covered rubber tube are completed respectively, the auxiliary drum station can be moved, the auxiliary rotating drum is moved to the main rotating drum, and the two are docked. Subsequently, the auxiliary cord - covered rubber tube on the auxiliary rotating drum and the main cord - covered rubber tube on the main rotating drum are assembled into the bladder body. Thus, it can be realized that the two rubber tubes forming the bladder body are assembled on the original rotating drum, avoiding secondary positioning caused by moving the rubber tube, thereby reducing errors. After forming the bladder body, the required mesh cloth and elastic cloth can be pasted on the outer surface of the bladder body. The mesh cloth can be embedded into the bladder rubber as a reinforcing layer, serving as a support structure to enhance the structural strength and anti - deformation ability of the bladder body. The elastic cloth is compounded with the rubber through its elastic fibers to form a flexible support structure, which can withstand the repeated inflation and contraction during the vulcanization process, disperse the internal stress, and prevent local tearing or permanent deformation of the bladder caused by high temperature and high pressure. At the same time, the elastic buffering effect can reduce the mechanical fatigue wear of the rubber layer during the vulcanization process, delay the material aging caused by repeated deformation, and reduce the bladder replacement frequency. Finally, the bladder body can be wound with a water - wrapped cloth and vulcanized. In this embodiment, the water - wrapped cloth is a soaked nylon lining cloth. When the bladder body vulcanizes and has an expansion tendency, it is restricted by the water - wrapped cloth, so that the bladder body vulcanizes under the restraint pressure of the water - wrapped cloth, ensuring that the material distribution of the vulcanized bladder body is uniform and the appearance of the inner and outer surfaces is flat. After vulcanization is completed, the water - wrapped cloth and the mesh cloth are torn off, and the vulcanized bladder can be obtained.

[0027] Furthermore, the positive wrapping action includes contracting the finger - shaped pieces on the positive and reverse wrapping device to wrap the edge cord fabric reserved on the inner side around the rubber sheet along the shape of the mold.

[0028] Specifically, after the main cord - covered rubber tube and the auxiliary cord - covered rubber tube are prepared, the positive wrapping action can be performed on both of them. The positive wrapping action can be carried out by a positive and reverse wrapping device. The positive wrapping mechanism in the positive and reverse wrapping device is provided with finger - shaped pieces, and the finger - shaped pieces can wrap the edge cord fabric reserved on the inner side of the rubber tube around the rubber sheet along the shape of the mold. Through the positive wrapping action on the rubber tube, the cord fabric fitting degree can be effectively optimized, the bead support strength can be enhanced, and the automation efficiency can be improved at the same time.

[0029] Furthermore, the reverse wrapping action includes winding a filler rubber strip around the contracted carcass rubber-coated cylinder after completing the forward wrapping action; opening the finger-shaped pieces and inflating the reverse wrapping capsule to push the material to be wrapped reversely upward and fit.

[0030] Specifically, the reverse wrapping action can be specifically completed by the finger-shaped pieces on the forward and reverse wrapping device and the reverse wrapping airbag on the forward and reverse wrapping device. After completing the forward wrapping action, the reverse wrapping action can be carried out on the main carcass rubber-coated cylinder and the auxiliary drum carcass rubber-coated cylinder respectively. Before the reverse wrapping action, it is first necessary to insert a rubber strip at the reverse wrapping position, then open the finger-shaped pieces and inflate the reverse wrapping airbag, so that the material is reversely wrapped upward along the finger-shaped pieces with the rubber strip as the folding line, and the reverse wrapping includes the carcass ply. By carrying out the reverse wrapping action on the main carcass rubber-coated cylinder and the auxiliary drum carcass rubber-coated cylinder respectively, the sealing performance of the capsule can be effectively improved, the capsule structure can be strengthened, and in cooperation with the forward wrapping action, the overall durability of the capsule can be improved.

[0031] Preferably, after successively completing the forward wrapping action and the reverse wrapping action on the main carcass rubber-coated cylinder, water wrapping cloth is wound around the main carcass rubber-coated cylinder; after successively completing the forward wrapping action and the reverse wrapping action on the auxiliary drum carcass rubber-coated cylinder, water wrapping cloth is wound around the auxiliary drum carcass rubber-coated cylinder.

[0032] Specifically, after carrying out the forward and reverse wrapping actions on the main carcass rubber-coated cylinder and the auxiliary drum carcass rubber-coated cylinder respectively, water wrapping cloth can be wound around the main carcass rubber-coated cylinder and the auxiliary drum carcass rubber-coated cylinder respectively. The water wrapping cloth winding here is the first water wrapping cloth winding in the one-step forming process of the whole tire capsule compared with the water wrapping cloth winding on the capsule body, and its process flow is basically the same as that of the second water wrapping cloth winding. By carrying out the first water wrapping cloth winding on the two rubber-coated cylinders, the internal pressure of the rubber compound during the vulcanization process of the capsule can be effectively ensured to be stable.

[0033] Furthermore, after completing the water wrapping cloth winding on the main carcass rubber-coated cylinder, the main carcass rubber-coated cylinder is folded, and one end of the main carcass rubber-coated cylinder is folded over the other end of the main carcass rubber-coated cylinder, so that the main carcass rubber-coated cylinder forms a closed end and an open end; after completing the water wrapping cloth winding on the auxiliary drum carcass rubber-coated cylinder, the auxiliary drum carcass rubber-coated cylinder is folded, and one end of the auxiliary drum carcass rubber-coated cylinder is folded over the other end of the auxiliary drum carcass rubber-coated cylinder, so that the auxiliary drum carcass rubber-coated cylinder forms a closed end and an open end.

[0034] Specifically, first, one end of the main drum cord rubber cylinder is folded onto the other end of the main drum cord rubber cylinder, so that the main drum cord rubber cylinder forms a closed end and an open end, that is, the cross-section of the main drum cord rubber cylinder is in a "C" shape with one side open. Correspondingly, the auxiliary drum cord rubber cylinder is folded, and one end of the auxiliary drum cord rubber cylinder is folded onto 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, that is, the cross-section of the auxiliary drum cord rubber cylinder is in a "C" shape with one side open. After folding the two, two symmetrical halves of the entire capsule body are formed. This facilitates the final docking of the main drum cord rubber cylinder and the auxiliary drum cord rubber cylinder to form a complete capsule body.

[0035] Further, moving the auxiliary drum station, the docking of the main drum and the auxiliary drum includes the following steps: installing a transition inner mold on one side of the main drum close to the open end of the main drum cord rubber cylinder; moving the auxiliary drum station so that the axis of the auxiliary drum is collinear with the axis of the main drum, and making the side of the auxiliary drum close to the open end of the auxiliary drum cord rubber cylinder close to the main drum; connecting the main drum, the auxiliary drum and the transition inner mold.

[0036] Specifically, the auxiliary drum station can be moved through a guide rail 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 collinear with the axis of the main drum. The side of the auxiliary drum close to the open end of the auxiliary drum cord rubber cylinder is close to the main drum, and the open end of the auxiliary drum cord rubber cylinder on the auxiliary drum is arranged opposite to the open end of the main drum cord rubber 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 through bolts and connecting rods respectively, so as to form a mold cavity at the capsule clamping position during vulcanization of the rubber compound. Thus, the docking of the main drum and the auxiliary drum is realized, providing sufficient conditions for the docking of the auxiliary drum cord rubber cylinder and the main drum cord rubber cylinder, and avoiding the error of secondary positioning caused by transferring the auxiliary drum cord rubber cylinder and the main drum cord rubber cylinder.

[0037] Further, assembling the auxiliary drum cord rubber cylinder and the main drum cord rubber cylinder to form a capsule body includes: connecting the folded parts of the auxiliary drum cord rubber cylinder and the main drum cord rubber cylinder.

[0038] Specifically, after docking the main drum, the transition inner mold and the auxiliary drum, the folded parts of the auxiliary drum cord rubber cylinder and the main drum cord rubber cylinder can be connected together by winding a mesh cloth, so as to form a complete capsule body to be vulcanized.

[0039] Preferably, the one-step forming process of the tire capsule further includes: after the vulcanization of the capsule body is completed, tearing off the water wrapping cloth and the mesh cloth, and spraying a layer of silicone rubber on the outer surface of the capsule body.

[0040] Specifically, silicone rubber is sprayed on the outer surface of the bladder body in the area where the bladder contacts the tire bead, which is used to isolate the bladder from the tire, can improve the separation efficiency of the bladder from the tire, and facilitate the separation of the bladder from the tire after tire shaping. 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A one-step forming process for a tire bladder, characterized in that, It includes the following steps: Step 1: Bond the main body film and the cord fabric to the main rotating drum at the main drum station to form a main body cord fabric rubber-coated cylinder, and bond the auxiliary drum film and the cord fabric to the auxiliary rotating drum at the auxiliary drum station to form an auxiliary drum cord fabric rubber-coated cylinder; Step 2: After sequentially completing the positive wrapping action and the reverse wrapping action on the main body cord fabric rubber-coated cylinder, sequentially complete the positive wrapping action and the reverse wrapping action on the auxiliary drum cord fabric rubber-coated cylinder; Step 3: Move the auxiliary drum station, dock the main rotating drum and the auxiliary rotating drum, and assemble the auxiliary drum cord fabric rubber-coated cylinder and the main body cord fabric rubber-coated cylinder to form a capsule body, and wind the mesh cloth; Step 4: Wind the water wrapping cloth on the capsule body and perform in-mold vulcanization.

2. The one-step forming process of the tire bladder according to claim 1, wherein After sequentially completing the positive wrapping action and the reverse wrapping action on the main body cord fabric rubber-coated cylinder, wind the water wrapping cloth on the main body cord fabric rubber-coated cylinder; After sequentially completing the positive wrapping action and the reverse wrapping action on the auxiliary drum cord fabric rubber-coated cylinder, wind the water wrapping cloth on the auxiliary drum cord fabric rubber-coated cylinder.

3. The one-step forming process of the tire bladder according to claim 2, wherein, The positive wrapping action includes: Contract the finger-shaped pieces on the positive and reverse wrapping device, and wrap the edge cord fabric reserved inside along the shape of the mold on the film.

4. The one-step forming process of a tire bladder according to claim 3, characterized in that, The reverse wrapping action includes: After completing the positive wrapping action, wind the filling rubber strip at the position of the contracted cord fabric rubber-coated cylinder; Open the finger-shaped pieces and inflate the reverse-wrapped capsule to push the material to wrap and bond upward.

5. The one-step forming process of the tire bladder according to claim 4, characterized in that After winding the water wrapping cloth on the main body cord fabric rubber-coated cylinder, fold the main body cord fabric rubber-coated cylinder, and fold one end of the main body cord fabric rubber-coated cylinder onto the other end of the main body cord fabric rubber-coated cylinder, so that the main body cord fabric rubber-coated cylinder forms a closed end and an open end; After winding the water wrapping cloth on the auxiliary drum cord fabric rubber-coated cylinder, fold the auxiliary drum cord fabric rubber-coated cylinder, and fold one end of the auxiliary drum cord fabric rubber-coated cylinder onto the other end of the auxiliary drum cord fabric rubber-coated cylinder, so that the auxiliary drum cord fabric rubber-coated cylinder forms a closed end and an open end.

6. The one-step forming process of the tire bladder according to claim 5, wherein, The step of moving the auxiliary drum station and docking the main rotating drum and the auxiliary rotating drum includes the following steps: Install a transition inner mold on one side of the main rotating drum close to the open end of the main body cord fabric rubber-coated cylinder; Move the auxiliary drum station so that the axis of the auxiliary rotating drum is collinear with the axis of the main rotating drum, and make the side of the auxiliary rotating drum close to the open end of the auxiliary drum cord fabric rubber-coated cylinder close to the main rotating drum; Connect the main rotating drum, the auxiliary rotating drum and the transition inner mold.

7. The one-step forming process of the tire bladder according to claim 6, characterized in that, Assembling the auxiliary drum cord fabric rubber-coated cylinder and the main body cord fabric rubber-coated cylinder to form a capsule body includes: Connect the folded parts of the auxiliary drum cord fabric rubber-coated cylinder and the main body cord fabric rubber-coated cylinder.

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

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