Tire vulcanization equipment

Abstract

The invention relates to the technical field of tire manufacturing, and discloses tire vulcanization equipment. Included angles are formed between first air holes in a center ring seat of the tire vulcanization equipment and the axial direction and the circumferential direction of the center ring seat respectively, guide vanes are located in air injection paths of the first air holes, and the air injection direction coincides with the normal direction of the guide vanes. The structure can accurately guide airflow, gas media are decomposed into axial speed and circumferential speed when flowing through the air holes, the axial speed and the circumferential speed synergistically act on the guide vanes, the guide vanes efficiently rotate, the rotating efficiency is improved, high-temperature gas can be evenly guided to all positions of the inner wall of the curing bladder, it is guaranteed that the interior of the curing bladder is evenly heated, and the service life of the curing bladder is prolonged. Therefore, the vulcanization quality is improved. In addition, the turbulent flow assembly is driven by airflow to rotate passively, uniform circulation of gas is achieved under the condition that an additional power source is not added, the structure of equipment is simplified, the manufacturing cost is reduced, and energy loss is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tire manufacturing, and in particular to a tire vulcanization device. Background Art

[0002] Tire vulcanization refers to the vulcanization of the tire, which is carried out by pressurizing the model. Before vulcanization, the tire is a plastic rubber with viscoelasticity, which is easy to deform, has low strength and has no use value. Through vulcanization, the plastic rubber is solidified and becomes a high elastic rubber with use value.

[0003] Specifically, the tire vulcanization process is to place the unvulcanized tire blank in a mold, and under high temperature and high pressure conditions, the linear polymer in the plastic rubber undergoes a cross-linking reaction through a chemical reaction to generate a network of polymer materials, which is macroscopically solidified, so that the tire obtains the required physical properties and dimensional stability. This step directly determines the quality, service life and driving safety of the tire.

[0004] Conventional vulcanization equipment needs to be equipped with a heating device and a gas circulation system inside the vulcanization bladder to achieve heating and circulation of the gas medium inside the vulcanization bladder, thereby creating a uniform high-temperature and high-pressure environment to ensure the uniformity of the tire heating temperature during the vulcanization operation. In the prior art, the gas circulation system of some vulcanization equipment uses an actively rotating fan or other turbulent device to ensure the circulation of gas. However, this solution requires the installation of a motor and a transmission shaft, which increases the complexity and manufacturing cost of the equipment and occupies a large space inside the vulcanization bladder. At the same time, since the air intake and exhaust ducts in the existing vulcanization equipment are both vertical, the blades are mainly subjected to the axial speed of the airflow, and the rotation efficiency is limited, which makes the high-temperature gas circulation efficiency inside the vulcanization bladder low, which in turn causes a large temperature difference in various places inside the bladder, and ultimately leads to uneven tire vulcanization, affecting the vulcanization quality of the tire.

[0005] Therefore, a tire vulcanization equipment is urgently needed to solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a tire vulcanization equipment, the internal high-temperature gas circulation flow efficiency is high, the tire vulcanization is uniform, and the tire vulcanization quality is high.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] A tire vulcanization device, comprising:

[0009] A vulcanization mold, wherein the vulcanization mold is an open-close structure, and a vulcanization cavity is formed inside the vulcanization mold;

[0010] A vulcanization bladder, wherein the vulcanization bladder is disposed in the vulcanization cavity;

[0011] A support device, the support device comprising:

[0012] A central rod, which is concentrically arranged with the vulcanization mold and the vulcanization capsule, and the central rod can move up or down; and,

[0013] A central ring seat, the central ring seat is integrally cylindrical and coaxially sleeved on the central rod, the central ring seat has an air inlet channel and an air outlet channel arranged inside and outside, both the air inlet channel and the air outlet channel are annular, a first air hole is arranged at the top of the air inlet channel, a second air hole is arranged on the side wall of the air outlet channel, and the first air hole and the second air hole are respectively communicated with the vulcanization cavity; the first air hole is arranged at an angle with respect to the axial direction and the circumferential direction of the central ring seat;

[0014] The tire vulcanization equipment further comprises a gas circulation system, the gas circulation system comprises a flow disturbing component, the flow disturbing component is arranged in the vulcanization cavity, the flow disturbing component is coaxially arranged with the central rod and is located above the central ring seat; the flow disturbing component comprises a guiding vane, the guiding vane is located in the gas injection path of the first air hole, and the gas injection direction coincides with the normal direction of the guiding vane.

[0015] As a preferred technical solution of the above tire vulcanization equipment,

[0016] On any cross-section in the height direction, at least two first air holes are provided on the first air hole, and all the first air holes on the same cross-section are evenly distributed along the circumferential direction of the central ring seat; and / or,

[0017] On any cross-section in the height direction, at least one circle of first air holes is evenly arranged along the radial direction of the central ring seat, each circle includes at least two first air holes, and all the first air holes in each circle are evenly distributed along the circumferential direction of the central ring seat.

[0018] As a preferred technical solution of the above tire vulcanization equipment,

[0019] On any cross-section in the height direction, at least two second air holes are provided on the second air hole, and all the second air holes on the same cross-section are evenly distributed along the circumferential direction of the central ring seat; and / or,

[0020] At least one group of second air holes is evenly arranged in the height direction, each group includes at least two second air holes, and all the second air holes in each group are evenly distributed along the circumferential direction of the central ring seat; when there are two or more groups of second air holes, the two or more groups of second air holes are evenly distributed in the height direction.

[0021] As a preferred technical solution of the above tire vulcanization equipment, the support device further includes a clamping assembly for sealingly mounting the vulcanization bladder in the vulcanization cavity;

[0022] The clamping assembly includes:

[0023] An upper clamping ring and an upper pressing ring, the upper clamping ring is mounted to the central rod, the upper pressing ring is mounted to the vulcanization mold, and the upper end of the vulcanization bladder is clamped between the upper clamping ring and the upper pressing ring; and,

[0024] A lower clamping ring and a lower pressing ring, the lower clamping ring is mounted to the central ring seat, the lower pressing ring is mounted to the vulcanization mold, and the lower end of the vulcanization bladder is clamped between the lower clamping ring and the lower pressing ring.

[0025] As a preferred technical solution of the above tire vulcanization equipment,

[0026] A gas medium inlet and a gas medium outlet are respectively provided at the lower end of the central ring seat, the gas medium inlet is communicated with the intake passage, and the gas medium outlet is communicated with the outlet passage;

[0027] The outlet end of the gas circulation system is communicated with the gas medium inlet, and the inlet end of the gas circulation system is communicated with the gas medium outlet.

[0028] As a preferred technical solution of the above tire vulcanization equipment,

[0029] The gas circulation system further includes a gas generating device and a gas circulation control device arranged outside the vulcanization mold. The gas generating device and the gas circulation control device are connected by a pipeline. The outlet end of the gas circulation control device is communicated with the gas medium inlet, and the inlet end of the gas circulation control device is communicated with the gas medium outlet;

[0030] The gas circulation control device includes a pressure gauge, a solenoid valve, a check valve, a cylinder and a hydraulic cylinder;

[0031] The gas generating device is connected to the solenoid valve through a pipeline. The pressure gauge is arranged on the pipeline between the gas generating device and the solenoid valve. The output end of the hydraulic cylinder is connected to the piston of the cylinder. The solenoid valve is connected to the cylinder through a pipeline. A check valve is arranged between the solenoid valve and the cylinder, and the check valve is used to ensure that the gas can only flow from the solenoid valve to the cylinder;

[0032] The outlet end of the cylinder is connected to the gas medium inlet through a pipeline, and a one-way valve is provided between the outlet end of the cylinder and the gas medium inlet. The one-way valve is used to ensure that the gas can only flow from the cylinder to the gas medium inlet;

[0033] The inlet end of the cylinder is connected to the gas medium outlet through a pipeline, and a one-way valve is provided between the gas medium outlet and the inlet end of the cylinder. The one-way valve is used to ensure that the gas can only flow from the gas medium outlet to the cylinder.

[0034] As a preferred technical solution of the above tire vulcanizing equipment, the tire vulcanizing equipment further includes:

[0035] A heating device is arranged on the outer surface of the central ring seat and above the lower clamping ring, and / or on the inner surface of the central ring seat.

[0036] As a preferred technical solution of the above tire vulcanizing equipment, the flow disturbance assembly further includes a support, a bearing and a blade support. The support is annular. The support is coaxially sleeved on the central rod and fixed to the central ring seat. The support and the central rod are in clearance fit. The bearing is sleeved between the support and the blade support, and the guide vane is installed on the blade support;

[0037] The guide vane is spiral.

[0038] As a preferred technical solution of the above tire vulcanizing equipment, a heat exchange part is provided in the intake passage and / or the outlet passage.

[0039] As a preferred technical solution of the above tire vulcanizing equipment, a heat insulation layer is provided on the outer surface of the area where the central ring seat is located outside the vulcanizing capsule;

[0040] The heat insulation layer is made of ceramic fiber or rock wool.

[0041] The beneficial effects of the present invention at least include:

[0042] In the tire vulcanization equipment of the present invention, the first air hole on the center ring seat is set at an angle with the axial direction and the circumferential direction of the center ring seat, the second air hole on the center ring seat is set at an angle with the axial direction and the circumferential direction of the center ring seat, and the guide vane is located in the gas injection path of the first air hole, and the gas injection direction coincides with the normal direction of the guide vane. This structure can achieve precise guidance of the airflow. When the gas medium flows through the air hole, it is decomposed into axial velocity and circumferential velocity, and the two act synergistically on the guide vane to make the guide vane rotate efficiently. Not only does it improve the rotation efficiency, but it can also evenly guide the high-temperature gas to various places on the inner wall of the vulcanization bladder to ensure that the inside of the vulcanization bladder is evenly heated, thereby improving the vulcanization quality. In addition, the spoiler assembly is driven by the airflow to rotate passively, so as to achieve uniform circulation of the gas without adding an additional power source. This passively rotating spoiler assembly design not only simplifies the structure of the equipment and reduces the manufacturing cost, but also is expected to improve the overall energy efficiency of the vulcanization equipment by reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0044] Figure 1 It is a schematic cross-sectional structure diagram of a tire vulcanization equipment provided in a specific embodiment of the present invention;

[0045] Figure 2 yes Figure 1 Sectional view along AA direction.

[0046] In the figure:

[0047] 1. Vulcanization mold; 2. Vulcanization capsule; 3. Support device; 4. Gas circulation system; 5. Heating device; 6. Heat exchange part; 7. Insulation layer;

[0048] 11. Upper mold; 12. Lower mold;

[0049] 31. Center rod;

[0050] 32, center ring seat; 321, air inlet channel; 322, air outlet channel; 323, first air hole; 324, second air hole; 325, gas medium inlet; 326, gas medium outlet;

[0051] 33. Clamping assembly; 331. Upper pressure ring; 332. Upper clamping ring; 333. Lower clamping ring; 334. Lower pressure ring;

[0052] 41. Turbulence component; 411. Support; 412. Bearing; 413. Blade support; 414. Flow guide vane

[0053] 42. Gas generating device

[0054] 43. Gas circulation control device; 431. Pressure gauge; 432. Solenoid valve; 433. Check valve; 434. Cylinder; 435. Hydraulic cylinder Detailed implementation mode

[0055] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation mode of the present invention will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation mode disclosed below.

[0056] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and 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 cannot be understood as a limitation of the present invention.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. 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.

[0059] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0060] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0061] In some vulcanization devices in the prior art, a fan or other flow disturbing device is arranged inside the vulcanization capsule. The fan or other flow disturbing device is generally arranged in the air flow channel of the air inlet pipeline or the exhaust pipeline, and the air flow drives the fan or other flow disturbing components to rotate, so as to generate a uniform high-temperature and high-pressure environment inside the vulcanization capsule.

[0062] However, the following problems exist in adopting the above scheme: since both the air inlet pipeline and the exhaust pipeline are in the vertical direction, the blades mainly bear the axial velocity of the air flow, and the rotation efficiency is limited, resulting in low efficiency of the circulating flow of the high-temperature gas inside the vulcanization capsule, and further causing a large temperature difference at various parts inside the capsule, and finally leading to uneven vulcanization of the tire and affecting the vulcanization quality of the tire.

[0063] As Figure 1 and Figure 2 shown, the present embodiment provides a tire vulcanization device, which includes a vulcanization mold 1, a vulcanization capsule 2, a support device 3 and a gas circulation system 4.

[0064] Specifically, the vulcanization mold 1 is a hollow opening and closing structure, and a vulcanization cavity is formed inside the vulcanization mold 1; the vulcanization capsule 2 is arranged in the vulcanization cavity; the support device 3 includes a liftable central rod 31, a central ring seat 32 arranged on the central rod 31 and a clamping assembly 33, and the clamping assembly 33 is used for sealingly installing the vulcanization capsule 2 in the vulcanization cavity.

[0065] Specifically, the vulcanization mold 1 is designed with an upper and lower split structure, including an upper mold 11 and a lower mold 12. The upper mold 11 can be closely fitted with the liftable central rod 31 and the clamping assembly 33. Before vulcanization operation, the upper mold 11 and the lower mold 12 are separated, and the central rod 31 rises to drive the vulcanization bladder 2 to contract, providing sufficient space for placing the green tire to be vulcanized. After the green tire is placed, the upper mold 11 descends and closes tightly with the lower mold 12 to form a closed vulcanization environment. During the vulcanization process, the vulcanization machine provides the clamping force for the vulcanization mold 1.

[0066] The vulcanization bladder 2 is a hollow and thin-walled rubber product. Its main function is to load the green tire to be vulcanized and cooperate with the vulcanization machine to carry out shaping and vulcanization operations by introducing a gas medium. The gas medium can be steam, inert gas or rare gas, as long as it does not participate in the redox reaction. In this embodiment, nitrogen is preferably used as the working gas due to its stability and easy availability.

[0067] The central rod 31 is concentrically arranged with the vulcanization mold 1 and the vulcanization bladder 2 respectively, and the central rod 31 can rise or fall; after the upper mold 11 and the lower mold 12 of the vulcanization mold 1 are separated, the central rod 31 rises to place the green tire to be vulcanized in the vulcanization cavity, and after the central rod 31 descends, the upper mold 11 then descends to close with the lower mold 12.

[0068] The central ring seat 32 is located at the center position of the bottom of the vulcanization mold 1. The central ring seat 32 is in clearance fit with the central rod 31 and provides an installation space for the central rod 31. A sealing device is arranged between the central rod 31 and the central ring seat 32 to avoid gas leakage. The sealing device can be a sealing structure such as an O-ring. The central ring seat 32 is integrally cylindrical and is sleeved on the central rod 31 along the axis in a coaxial manner.

[0069] As Figure 2 shown, the central ring seat 32 has an intake channel 321 and an exhaust channel 322 arranged inside and outside. Both the intake channel 321 and the exhaust channel 322 are annular. A first air hole 323 is arranged at the top of the intake channel 321, and a second air hole 324 is arranged on the side wall of the exhaust channel 322. The first air hole 323 and the second air hole 324 are respectively communicated with the vulcanization cavity; the first air hole 323 is arranged at an angle with the axis and the circumference of the central ring seat 32 respectively. Optionally, the second air hole 324 is arranged at an angle with the axis and the circumference of the central ring seat 32 respectively.

[0070] The gas circulation system 4 includes a flow disturbing component 41. The flow disturbing component 41 is arranged in the vulcanization cavity. The flow disturbing component 41 is coaxially arranged with the central rod 31 and is located above the central ring seat 32. The flow disturbing component 41 includes a guide vane 414. The guide vane 414 is located in the gas injection path of the first air hole 323, and the gas injection direction coincides or substantially coincides with the normal direction of the guide vane 414, that is, the gas injection direction is substantially perpendicular to the surface of the guide vane 414. This structure can increase the rotation speed of the guide vane 414.

[0071] In this embodiment, the air holes on the central ring seat 32 are arranged at an angle to the axial and circumferential directions of the central ring seat 32. The guide vane 414 is located in the gas injection path of the first air hole 323, and the gas injection direction coincides or substantially coincides with the normal direction of the guide vane 414. This structure can achieve precise guidance of the air flow. When the gas medium flows through the air holes, it is decomposed into an axial velocity and a circumferential velocity. The two act together on the guide vane 414 to make the guide vane 414 rotate efficiently. It not only improves the rotation efficiency but also evenly guides the high-temperature gas to all parts of the inner wall of the vulcanization capsule 2, ensuring uniform heating inside the vulcanization capsule 2, thereby improving the vulcanization quality. In addition, the flow disturbing component 41 is driven to rotate passively by the air flow, so as to achieve uniform circulation of the gas without adding an additional power source. This design of the passively rotating flow disturbing component 41 not only simplifies the structure of the equipment, reduces the manufacturing cost, but also is expected to improve the overall energy efficiency of the vulcanization equipment by reducing energy loss.

[0072] Optionally, on any cross-section along the height direction, at least two first air holes 323 are provided on the first air hole 323. All the first air holes 323 on the same cross-section are evenly distributed along the circumferential direction of the central ring seat 32. This structural setting can improve the air outlet uniformity, thereby improving the uniformity of the gas medium flow.

[0073] Further optionally, on any cross-section along the height direction, at least one circle of first air holes 323 is evenly provided along the radial direction of the central ring seat 32. Each circle includes at least two first air holes 323. All the first air holes 323 in each circle are evenly distributed along the circumferential direction of the central ring seat 32. This structural setting can further improve the air outlet uniformity, thereby further improving the uniformity of the gas medium flow.

[0074] Optionally, on any cross-section along the height direction, at least two second air holes 324 are provided, and all the second air holes 324 on the same cross-section are evenly distributed along the circumferential direction of the central ring seat 32. This structural setting can improve the uniformity of the return air, thereby improving the uniformity of the gas medium flow. On the same cross-section, the number of the first air holes 323 and the number of the second air holes 324 can be the same, and along the same radial direction, the inner first air holes 323 and the outer second air holes 324 are arranged in one-to-one correspondence. This structural setting can further improve the uniformity of the gas medium flow and also improve the processing convenience. In this embodiment, eight first air holes 323 and eight second air holes 324 are respectively provided, and the eight first air holes 323 and the eight second air holes 324 are arranged in one-to-one correspondence. Of course, the number of the first air holes 323 and the second air holes 324 is not limited to this and can be designed according to actual situations.

[0075] Further optionally, at least one group of second air holes 324 is evenly provided along the height direction, each group includes at least two second air holes 324, and all the second air holes 324 in each group are evenly distributed along the circumferential direction of the central ring seat 32; when two or more groups of second air holes 324 are provided, the two or more groups of second air holes 324 are evenly distributed along the height direction. This structural setting can further improve the uniformity of the return air, thereby further improving the uniformity of the gas medium flow.

[0076] The clamping assembly 33 includes an upper clamping ring 332, an upper pressing ring 331, a lower clamping ring 333 and a lower pressing ring 334. Among them, the upper clamping ring 332 is installed on the central rod 31, the upper pressing ring 331 is installed on the upper die 11, and the upper end of the vulcanization capsule 2 is clamped between the upper clamping ring 332 and the upper pressing ring 331; the lower clamping ring 333 is installed on the central ring seat 32, the lower pressing ring 334 is installed on the lower die 12, and the lower end of the vulcanization capsule 2 is clamped between the lower clamping ring 333 and the lower pressing ring 334. The vulcanization capsule 2 is hermetically installed through the clamping assembly 33 to ensure its stability and sealing performance during the vulcanization process, thereby avoiding the leakage of the gas medium.

[0077] In this embodiment, a gas medium inlet 325 and a gas medium outlet 326 are respectively arranged at the lower end of the central ring seat 32. The gas medium inlet 325 is communicated with the air inlet channel 321, and the gas medium outlet 326 is communicated with the air outlet channel 322; the outlet end of the gas circulation system 4 is communicated with the gas medium inlet 325, and the inlet end of the gas circulation system 4 is communicated with the gas medium outlet 326, so as to form a closed space suitable for gas circulation between the gas circulation system 4 and the inside of the vulcanization capsule 2.

[0078] In this embodiment, the gas circulation system 4 includes a gas generating device 42 and a gas circulation control device 43 disposed outside the vulcanization mold 1. The gas generating device 42 can be a nitrogen generator or a steam boiler, which can be selected according to the actual situation. The gas generating device 42 and the gas circulation control device 43 are connected by pipelines. The outlet end of the gas circulation control device 43 is communicated with the gas medium inlet 325, and the inlet end of the gas circulation control device 43 is communicated with the gas medium outlet 326. The gas circulation control device 43 is used to control the gas supply of the gas generating device 42 and provide a gas medium for the vulcanization process.

[0079] Specifically, the gas circulation control device 43 includes a pressure gauge 431, a solenoid valve 432, a check valve 433, a cylinder 434 and a hydraulic cylinder 435; the gas generating device 42 is connected to the solenoid valve 432 through a pipeline. The pressure gauge 431 is disposed on the pipeline between the gas generating device 42 and the solenoid valve 432. The output end of the hydraulic cylinder 435 is connected to the piston of the cylinder 434. The solenoid valve 432 is connected to the cylinder 434 through a pipeline. A check valve 433 is disposed between the solenoid valve 432 and the cylinder 434. The check valve 433 is used to ensure that the gas can only flow from the solenoid valve 432 to the cylinder 434; the outlet end of the cylinder 434 is communicated with the gas medium inlet 325 through a pipeline, and a check valve 433 is provided between the outlet end of the cylinder 434 and the gas medium inlet 325. The check valve 433 is used to ensure that the gas can only flow from the cylinder 434 to the gas medium inlet 325; the inlet end of the cylinder 434 is communicated with the gas medium outlet 326 through a pipeline, and a check valve 433 is provided between the gas medium outlet 326 and the inlet end of the cylinder 434. The check valve 433 is used to ensure that the gas can only flow from the gas medium outlet 326 to the cylinder 434.

[0080] Specifically, the working process of the gas circulation control device 43 is as follows: The gas generating device 42 generates gas and transports it to the solenoid valve 432 through a pipeline. The pressure gauge 431 monitors the gas pressure in real time. After reaching a certain pressure, the solenoid valve 432 is closed. The check valve 433 ensures that the gas can only flow from the solenoid valve 432 to the cylinder 434;

[0081] When the piston of the hydraulic cylinder 435 moves to the right, it pushes the piston of the cylinder 434 to move to the right. The gas in the right cavity of the cylinder 434 is squeezed. The gas enters the gas medium inlet 325 through the check valve 433 located on the upper right side of the cylinder 434, and a negative pressure is formed in the left cavity of the cylinder 434; after the gas is discharged from the gas medium outlet 326, it enters the left cavity through the check valve 433 on the lower left side of the cylinder 434;

[0082] When the piston of the hydraulic cylinder 435 moves leftward, it drives the piston of the air cylinder 434 to move leftward. The gas in the left cavity of the air cylinder 434 is squeezed, and the gas enters the gas medium inlet 325 through the one-way valve 433 located at the upper left side of the air cylinder 434. A negative pressure is formed in the right cavity of the air cylinder 434. After the gas is discharged from the gas medium outlet 326, it enters the right cavity through the one-way valve 433 located at the lower right side of the air cylinder 434, forming a cycle.

[0083] The tire vulcanizing device further includes a heating device 5 for heating the gas medium. The heating device 5 is arranged on the outer surface of the central ring seat 32 and above the lower clamping ring 333. The heating method of the tire vulcanizing device can be electromagnetic induction heating, resistive heating, infrared heating, etc. In this embodiment, the electromagnetic induction heating method is preferably adopted. Correspondingly, the heating device 5 is a heating coil. The position of the heating device 5 can also be arranged on the inner surface of the central ring seat 32 to directly heat the gas medium. Of course, the heating device 5 can also be arranged on both the outer surface and the inner surface of the central ring seat 32 at the same time, with higher heating efficiency.

[0084] The flow disturbance component 41 in this embodiment further includes a support 411, a bearing 412 and a blade support 413. The support 411 is coaxially arranged with the central rod 31, and the bottom of the support 411 is fixed to the central ring seat 32. The support 411 is annular, and there is a clearance fit between the support 411 and the central rod 31 to facilitate the up and down movement of the central rod 31. The bearing 412 is sleeved between the support 411 and the blade support 413, and the blade support 413 is tightly fitted with the outer ring of the bearing 412. The guide vanes 414 are installed on the blade support 413. The guide vanes 414 can be in a spiral twist shape.

[0085] In this embodiment, a heat exchange part 6 can be provided in the air inlet channel 321, and a heat exchange part 6 can also be provided in the air outlet channel 322, and it is preferably provided in both. By providing the heat exchange part 6, the heat exchange area can be increased and the heat exchange efficiency can be improved. Optionally, the heat exchange part 6 is made of a porous medium material.

[0086] In this embodiment, a heat insulation layer 7 is provided on the outer surface of the central ring seat 32 below the lower clamping ring 333 and corresponding to the outside of the vulcanizing bladder 2, that is, the outer surface of the area of the central ring seat 32 outside the vulcanizing bladder 2 is provided with the heat insulation layer 7 to further improve the heat insulation effect and prevent heat dissipation.

[0087] Optionally, the heat insulation layer 7 is made of ceramic fiber or rock wool. The heat insulation layer 7 is fixed to the outer surface of the central ring seat 32 by wire mesh or steel strip binding.

[0088] Obviously, the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

[0089] Note that in the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. A tire vulcanization equipment, comprising: A vulcanization mold (1), wherein the vulcanization mold (1) is an open-close structure, and a vulcanization cavity is formed inside the vulcanization mold (1); A vulcanization bladder (2), wherein the vulcanization bladder (2) is arranged in the vulcanization cavity; A supporting device (3), wherein the supporting device (3) comprises: a center rod (31) which is arranged concentrically with the vulcanization mold (1) and the vulcanization bladder (2), and the center rod (31) can be raised or lowered; and A center ring seat (32), the center ring seat (32) is cylindrical as a whole and is coaxially sleeved on the center rod (31), characterized in that the center ring seat (32) has an air inlet channel (321) and an air outlet channel (322) arranged inside and outside, the air inlet channel (321) and the air outlet channel (322) are both annular, a first air hole (323) is arranged on the top of the air inlet channel (321), and a second air hole (324) is arranged on the side wall of the air outlet channel (322), the first air hole (323) and the second air hole (324) are respectively connected to the vulcanization cavity; the first air hole (323) and the center ring seat (32) are arranged at an angle in the axial direction and the circumferential direction respectively; The tire vulcanization equipment further comprises a gas circulation system (4), wherein the gas circulation system (4) comprises a spoiler assembly (41), wherein the spoiler assembly (41) is arranged in the vulcanization cavity, wherein the spoiler assembly (41) is coaxially arranged with the center rod (31) and is located above the center ring seat (32); wherein the spoiler assembly (41) comprises a guide vane (414), wherein the guide vane (414) is located in a gas injection path of the first air hole (323), and the gas injection direction coincides with the normal direction of the guide vane (414).

2. The tire vulcanization equipment according to claim 1, characterized in that: At least two first air holes (323) are provided on any cross section along the height direction, and all the first air holes (323) on the same cross section are evenly distributed along the circumferential direction of the central ring seat (32); and / or, On any cross section along the height direction, at least one circle of the first air holes (323) is evenly arranged along the radial direction of the center ring seat (32), each circle includes at least two first air holes (323), and all the first air holes (323) in each circle are evenly distributed along the circumferential direction of the center ring seat (32).

3. The tire vulcanization equipment according to claim 1, characterized in that: At least two second air holes (324) are provided on any cross section along the height direction, and all the second air holes (324) on the same cross section are evenly distributed along the circumferential direction of the central ring seat (32); and / or, At least one group of the second air holes (324) is provided along the height direction, each group includes at least two second air holes (324), and all the second air holes (324) in each group are evenly distributed along the circumferential direction of the central ring seat (32); when two or more groups of the second air holes (324) are provided, the two or more groups of the second air holes (324) are evenly distributed along the height direction.

4. The tire vulcanization equipment according to claim 1, characterized in that: The supporting device (3) further comprises a clamping assembly (33), wherein the clamping assembly (33) is used to seal the vulcanization bladder (2) in the vulcanization cavity; The clamping assembly (33) comprises: an upper clamping ring (332) and an upper pressing ring (331), wherein the upper clamping ring (332) is mounted on the center rod (31), the upper pressing ring (331) is mounted on the vulcanization mold (1), and the upper end of the vulcanization bladder (2) is clamped between the upper clamping ring (332) and the upper pressing ring (331); and, A lower clamping ring (333) and a lower pressure ring (334), wherein the lower clamping ring (333) is mounted on the center ring seat (32), and the lower pressure ring (334) is mounted on the vulcanization mold (1), and the lower end of the vulcanization bladder (2) is clamped between the lower clamping ring (333) and the lower pressure ring (334).

5. The tire vulcanization equipment according to claim 1, characterized in that: A gas medium inlet (325) and a gas medium outlet (326) are respectively provided at the lower end of the central ring seat (32), the gas medium inlet (325) is connected to the gas inlet channel (321), and the gas medium outlet (326) is connected to the gas outlet channel (322); The outlet end of the gas circulation system (4) is connected to the gas medium inlet (325), and the inlet end of the gas circulation system (4) is connected to the gas medium outlet (326).

6. The tire vulcanization equipment according to claim 5, characterized in that: The gas circulation system (4) further comprises a gas generating device (42) and a gas circulation control device (43) arranged outside the vulcanization mold (1); the gas generating device (42) and the gas circulation control device (43) are connected via a pipeline; the outlet end of the gas circulation control device (43) is connected to the gas medium inlet (325); and the inlet end of the gas circulation control device (43) is connected to the gas medium outlet (326); The gas circulation control device (43) comprises a pressure gauge (431), a solenoid valve (432), a one-way valve (433), a cylinder (434) and a hydraulic cylinder (435); The gas generating device (42) is connected to the solenoid valve (432) via a pipeline, the pressure gauge (431) is arranged on the pipeline between the gas generating device (42) and the solenoid valve (432), the output end of the hydraulic cylinder (435) is connected to the piston of the cylinder (434), the solenoid valve (432) is connected to the cylinder (434) via a pipeline, and the one-way valve (433) is arranged between the solenoid valve (432) and the cylinder (434), and the one-way valve (433) is used to ensure that the gas can only flow from the solenoid valve (432) to the cylinder (434); The outlet end of the cylinder (434) is connected to the gas medium inlet (325) through a pipeline, and the one-way valve (433) is provided between the outlet end of the cylinder (434) and the gas medium inlet (325), and the one-way valve (433) is used to ensure that the gas can only flow from the cylinder (434) to the gas medium inlet (325); The inlet end of the cylinder (434) is connected to the gas medium outlet (326) through a pipeline, and the one-way valve (433) is provided between the gas medium outlet (326) and the inlet end of the cylinder (434). The one-way valve (433) is used to ensure that the gas can only flow from the gas medium outlet (326) to the cylinder (434).

7. The tire vulcanizing equipment according to claim 4, characterized in that: The tire vulcanization equipment also includes: A heating device (5) is arranged on the outer surface of the center ring seat (32) and is located above the lower clamping ring (333), and / or is arranged on the inner surface of the center ring seat (32).

8. The tire vulcanization equipment according to claim 1, characterized in that: The spoiler assembly (41) further comprises a support (411), a bearing (412) and a blade support (413); the support (411) is annular, the support (411) is coaxially sleeved on the center rod (31) and the support (411) is fixed to the center ring seat (32); the support (411) and the center rod (31) are clearance-matched, the bearing (412) is sleeved between the support (411) and the blade support (413), and the guide blade (414) is mounted on the blade support (413); The guide blade (414) is spiral-shaped.

9. The tire vulcanizing equipment according to claim 1, characterized in that: A heat exchange portion (6) is provided in the air inlet channel (321) and / or the air outlet channel (322); The heat exchange part (6) is made of porous medium material.

10. The tire vulcanization equipment according to claim 1, characterized in that: The outer surface of the area of ​​the central ring seat (32) outside the vulcanizing bladder (2) is provided with a heat-insulating layer (7); The thermal insulation layer (7) is made of ceramic fiber or rock wool.

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