A moulding capsule for tyres

Abstract

The utility model relates to vulcanization capsule technical field, and disclose a kind of forming capsule for tire, including capsule main body, the capsule main body includes inner rubber layer, and the outer wall of inner rubber layer is provided with reinforcing layer, the outer wall of reinforcing layer is provided with outer rubber layer, the outer wall of capsule main body is provided with capsule neck, and the inner wall of capsule neck is provided with flared, the outer wall of flared is provided with arc edge, the inner wall of capsule neck is provided with sealing groove.The forming capsule for tire is sealed by being provided with sealing groove in capsule neck, and cooperate with matched sealing ring, both closely adhere to, improve the sealing property of tire vulcanization capsule and tire vulcanization machine assembly, and limit groove and the limit protrusion of sealing ring outer wall mutually cooperate, further strengthen the stability of sealing ring, make it not prone to displacement or deformation in high temperature and high pressure vulcanization environment, to significantly improve the sealing performance when capsule neck and tire vulcanization machine assembly.

Description

Technical Field

[0001] This utility model relates to the field of vulcanized capsule technology, specifically a molded capsule for tires. Background Technology

[0002] Tire vulcanizing bladders are essential consumable components in tire production, serving as the inner mold for tire molds. They are hollow, thin-walled rubber products installed inside the tire vulcanizing machine during the tire vulcanization process to shape the tire.

[0003] Its main function is to fill the tire with compressed air, nitrogen, or superheated water during the tire vulcanization process, causing it to stretch and support the tire blank to form an internally vulcanized tire. Tire vulcanizing bladders play a key role in the final vulcanization stage of tire production. In tire manufacturing companies, bladder quality issues are a key factor restricting the quality and efficiency of tire products.

[0004] The prior art patent document CN219748976U provides a tire vulcanizing bladder. This bladder features an exhaust groove, a center strip, and a honeycomb structure. The exhaust groove is designed with a straight groove and an inclined groove connected together. The exhaust groove not only reduces the weight of the vulcanizing bladder and ensures its airtightness, but also accelerates the airflow on the surface of the vulcanizing bladder, effectively improving the exhaust effect and playing a role in heat dissipation and ventilation. The center strip and honeycomb structure can increase the tire's balance and wear resistance, effectively preventing damage that is common in traditional structures.

[0005] The existing technology described above facilitates assembly with a tire vulcanizing machine by providing a capsule neck. However, in terms of assembly, the existing capsule neck has poor sealing performance when assembled with the tire vulcanizing machine. Relying solely on conventional sealing structures makes it difficult to ensure good sealing performance in the vulcanizing environment, which can easily lead to gas leakage, resulting in insufficient tire vulcanizing pressure and affecting the quality of the finished tire. Therefore, we need a molded capsule for tires. Utility Model Content

[0006] The purpose of this invention is to provide a molded capsule for tires to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a molded capsule for tires, comprising a capsule body, the capsule body including an inner rubber layer, and a reinforcing layer provided on the outer wall of the inner rubber layer, and an outer rubber layer provided on the outer wall of the reinforcing layer, the capsule body having a capsule neck on the outer wall, and an opening provided on the inner wall of the capsule neck, the opening having an arc edge on the outer wall of the opening, a sealing groove provided on the inner wall of the capsule neck, a limiting groove provided on the inner wall of the sealing groove, a sealing ring provided on the inner wall of the sealing groove, and a limiting protrusion provided on the outer wall of the sealing ring, a middle strip provided on the outer wall of the capsule body, an exhaust groove provided on the outer wall of the capsule body, and micro-convex ridges provided on the outer wall of the capsule body.

[0008] Preferably, the reinforcing layer is disposed between the inner adhesive layer and the outer adhesive layer.

[0009] Preferably, there are multiple exhaust slots, and the multiple exhaust slots are equally spaced on the capsule body.

[0010] Preferably, the inner wall shape and size of the sealing groove match the outer wall shape and size of the sealing ring, and the inner wall of the sealing groove fits into the outer wall of the sealing ring.

[0011] Preferably, there are multiple limiting grooves, and the multiple limiting grooves are equally spaced within the neck of the capsule.

[0012] Preferably, one end of the limiting protrusion extends into the limiting groove, and the outer wall of the limiting protrusion is in contact with the inner wall of the limiting groove.

[0013] Preferably, there are multiple micro-protrusions, and the multiple micro-protrusions are evenly distributed on the capsule body.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are: This invention improves the sealing performance of the tire vulcanizing bladder and the tire vulcanizing machine by creating a sealing groove inside the bladder neck and matching a sealing ring, ensuring a tight fit. Furthermore, the limiting groove and the limiting protrusion on the outer wall of the sealing ring work together to further enhance the stability of the sealing ring, preventing displacement or deformation under high temperature and high pressure vulcanization conditions. This significantly improves the sealing performance when the bladder neck is assembled with the tire vulcanizing machine. The flared structure at the bladder neck acts as a guide during assembly with the vulcanizing machine, making it easier and more accurate to install the bladder into the corresponding position, reducing assembly difficulty. Multiple micro-protrusions on the outside of the bladder body increase the friction between it and the tire blank, effectively preventing relative sliding between the bladder and the tire blank during vulcanization and ensuring the tire is accurately formed according to the shape of the mold cavity. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the capsule body and capsule neck structure of this utility model; Figure 3 This is a schematic diagram of the inner adhesive layer and reinforcing layer structure of this utility model; Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] The components include: 1. Capsule body; 101. Inner gelatin layer; 102. Reinforcing layer; 103. Outer gelatin layer; 2. Capsule neck; 3. Flared opening; 4. Arc edge; 5. Sealing groove; 6. Limiting groove; 7. Sealing ring; 8. Protrusion; 9. Middle strip; 10. Venting groove; 11. Micro-protrusion. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-4 As shown, a molded capsule for tires includes a capsule body 1, which includes an inner rubber layer 101. The outer wall of the inner rubber layer 101 is provided with a reinforcing layer 102, and the outer wall of the reinforcing layer 102 is provided with an outer rubber layer 103. The outer wall of the capsule body 1 is provided with a capsule neck 2, and the inner wall of the capsule neck 2 is provided with a flared opening 3. The outer wall of the flared opening 3 is provided with an arc edge 4. The inner wall of the capsule neck 2 is provided with a sealing groove 5, and the inner wall of the sealing groove 5 is provided with a limiting groove 6. The inner wall of the sealing groove 5 is provided with a sealing ring 7, and the outer wall of the sealing ring 7 is provided with a limiting protrusion 8. The outer wall of the capsule body 1 is provided with a middle strip 9, and the outer wall of the capsule body 1 is provided with an exhaust groove 10. The outer wall of the capsule body 1 is provided with micro-protrusions 11.

[0019] Through the above technical solution, by opening a sealing groove 5 in the neck 2 of the capsule and matching it with a sealing ring 7, the two fit tightly together, improving the sealing performance of the tire vulcanizing capsule and the tire vulcanizing machine assembly. Furthermore, the limiting groove 6 and the limiting protrusion 8 on the outer wall of the sealing ring 7 cooperate with each other, further enhancing the stability of the sealing ring 7, making it less prone to displacement or deformation under high temperature and high pressure vulcanization environment, thereby significantly improving the sealing performance of the capsule neck 2 when assembled with the tire vulcanizing machine. By setting a flared structure 3 in the neck 2 of the capsule, it can play a guiding role when assembled with the tire vulcanizing machine, making it easier and more accurate to install the capsule into the corresponding position of the vulcanizing machine, reducing the assembly difficulty.

[0020] Specifically, the reinforcing layer 102 is disposed between the inner adhesive layer 101 and the outer adhesive layer 103.

[0021] Through the above technical solution, the inner rubber layer 101 is made of high-temperature resistant and corrosion-resistant rubber material, such as hydrogenated nitrile rubber, with a thickness of 1-3mm. The inner rubber layer 101 is in direct contact with the pressure medium and can effectively resist the corrosion of media such as steam and superheated water, preventing problems such as penetration and swelling inside the capsule, and ensuring the sealing performance and structural integrity of the capsule under high temperature and high pressure environment. The reinforcing layer 102 is composed of multiple sets of interwoven fiber cords and rubber matrix. The fiber cords are made of high-strength, high-modulus aramid fibers or polyester fibers. The weaving angle of the cords is 45°-60° and the spacing between the cords is 0.5-1.5mm. The reinforcing layer 102 can provide the capsule with excellent mechanical properties, improve the capsule's tensile and tear resistance, make it less prone to deformation and damage when subjected to greater pressure, and extend the capsule's service life. The outer rubber layer 103 is made of wear-resistant and aging-resistant rubber material, such as neoprene rubber, which gives it good wear resistance to resist friction with the mold and rubber preform during vulcanization and prevent surface wear and scratches.

[0022] Specifically, there are multiple exhaust slots 10, and the multiple exhaust slots 10 are equally spaced on the capsule body 1.

[0023] By using the above technical solution and setting multiple equally spaced exhaust channels 10, the total area of ​​the gas exhaust channel can be greatly increased, ensuring that air and exhaust gas can be discharged quickly and smoothly during the tire vulcanization process.

[0024] Specifically, the inner wall shape and size of the sealing groove 5 match the outer wall shape and size of the sealing ring 7, and the inner wall of the sealing groove 5 fits into the outer wall of the sealing ring 7.

[0025] Through the above technical solution, after the capsule neck 2 is assembled with the tire vulcanizing machine, the sealing performance of the assembly connection is enhanced by setting a sealing ring 7.

[0026] Specifically, there are multiple limiting grooves 6, and the multiple limiting grooves 6 are equally spaced within the neck 2 of the capsule.

[0027] Through the above technical solution, by setting multiple limiting grooves 6, the sealing ring 7 is provided with precise positioning and stable support. During the capsule installation and vulcanization process, the displacement and deformation of the sealing ring 7 can be effectively limited, preventing the sealing ring 7 from shifting or twisting under pressure, ensuring that the sealing ring 7 is always in the optimal sealing position, and enhancing the sealing performance.

[0028] Specifically, one end of the limiting protrusion 8 extends into the limiting groove 6, and the outer wall of the limiting protrusion 8 fits against the inner wall of the limiting groove 6.

[0029] Through the above technical solution, the limiting protrusion 8 on the sealing ring 7 extends into the limiting groove 6, which enhances stability and can effectively limit the displacement and deformation of the sealing ring 7.

[0030] Specifically, there are multiple micro-protrusions 11, and these multiple micro-protrusions 11 are evenly spaced on the capsule body 1.

[0031] By using the above technical solution, by setting multiple micro-protrusions 11 on the outside of the capsule body 1, the friction between the capsule and the tire blank can be increased, effectively preventing relative sliding between the capsule and the tire blank during the vulcanization process, and ensuring that the tire can be accurately formed according to the shape of the mold cavity.

[0032] During use, the capsule body 1 is first installed onto the tire vulcanizing machine. During installation, the flared neck 2 structure 3 of the capsule acts as a guide, and the arc edge 4 design guides the capsule body 1 to be accurately and conveniently inserted into the corresponding position on the vulcanizing machine, reducing assembly difficulty and improving installation efficiency. During installation, the sealing ring 7 enhances the sealing performance. The limiting protrusion 8 on the sealing ring 7 is embedded in the limiting groove 6, preventing the sealing ring 7 from shifting or deforming under the high temperature and high pressure vulcanization environment, thus enhancing sealing performance and stability. The inner rubber layer 101 of the capsule body 1 is made of high-temperature resistant and corrosion-resistant hydrogenated nitrile rubber, effectively resisting corrosion from steam, hot water, and other media, preventing problems such as internal penetration and swelling. The reinforcing layer 102 consists of multiple interwoven layers. The composite of fiber cord and rubber matrix improves tensile and tear resistance, making it less prone to deformation and damage under high pressure, thus extending its service life. The outer rubber layer 103 is made of wear-resistant and aging-resistant neoprene rubber, which has good wear resistance. When used with the wear-resistant intermediate strip 9, it can resist friction between the tire and the mold and the tire blank during vulcanization, preventing surface wear and scratches. By setting multiple micro-protrusions 11 on the outer rubber layer 103 of the bladder body 1, the friction between the bladder and the tire blank is increased, effectively preventing relative sliding between the bladder and the tire blank, ensuring that the tire can be accurately formed according to the shape of the mold cavity, and ensuring the quality and pass rate of the finished tire. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molded capsule for tires, comprising a capsule body (1), characterized in that: The capsule body (1) includes an inner rubber layer (101), and an outer reinforcing layer (102) is provided on the outer wall of the inner rubber layer (101). An outer rubber layer (103) is provided on the outer wall of the reinforcing layer (102). The capsule body (1) has a capsule neck (2) on its outer wall. An opening (3) is provided on the inner wall of the capsule neck (2). An arc edge (4) is provided on the outer wall of the opening (3). A sealing groove (5) is provided on the inner wall of the capsule neck (2). A limiting groove (6) is provided on the inner wall of the sealing groove (5). A sealing ring (7) is provided on the inner wall of the sealing groove (5). A limiting protrusion (8) is provided on the outer wall of the sealing ring (7). A middle strip (9) is provided on the outer wall of the capsule body (1). An exhaust groove (10) is provided on the outer wall of the capsule body (1). A micro-protrusion ridge (11) is provided on the outer wall of the capsule body (1).

2. The tire molding bladder according to claim 1, characterized in that: The reinforcing layer (102) is disposed between the inner adhesive layer (101) and the outer adhesive layer (103).

3. The tire molding bladder according to claim 1, characterized in that: The number of exhaust grooves (10) is multiple, and the multiple exhaust grooves (10) are equally spaced on the capsule body (1).

4. The tire molding bladder according to claim 1, characterized in that: The inner wall shape and size of the sealing groove (5) match the outer wall shape and size of the sealing ring (7), and the inner wall of the sealing groove (5) fits against the outer wall of the sealing ring (7).

5. A molded bladder for tires according to claim 1, characterized in that: The number of the limiting grooves (6) is multiple, and the multiple limiting grooves (6) are equally spaced within the neck (2) of the capsule.

6. A molded bladder for tires according to claim 1, characterized in that: One end of the limiting protrusion (8) extends into the limiting groove (6), and the outer wall of the limiting protrusion (8) is in contact with the inner wall of the limiting groove (6).

7. A molded bladder for tires according to claim 1, characterized in that: The number of micro-protrusions (11) is multiple, and the multiple micro-protrusions (11) are equally spaced on the capsule body (1).

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