CN109795060B

CN109795060B - A kind of vulcanization device and method for vibration curing rubber tire

Info

Publication number: CN109795060B
Application number: CN201910255835.4A
Authority: CN
Inventors: 蒋彦; 刘骁; 陈龙; 马橼楗; 高虎山; 张阳; 刘雨晴; 薛甲鹏; 汪通悦; 孙全平; 陈中; 许兆美
Original assignee: Huaiyin Institute of Technology
Current assignee: Chaoyang Huaxing Wanda Tire Co ltd; Dragon Totem Technology Hefei Co ltd
Priority date: 2019-04-01
Filing date: 2019-04-01
Publication date: 2021-06-08
Anticipated expiration: 2039-04-01
Also published as: CN109795060A

Abstract

The invention relates to a vulcanization device for vibration-cured rubber tires, which comprises a vulcanization bladder close to the inner wall of the green tire, an upper top plate and a lower bottom plate, and the vulcanization bladder, the upper top plate and the lower bottom plate form a closed The inner cavity; the central opening of the lower bottom plate, and a central pipeline is arranged below, and is connected with the central pipeline, and is located in the inner cavity of a turbine; the turbine is provided with several rings of annular heating pipes, and is arranged around the turbine. A plurality of blades are separated into air outlets; a support rod is also vertically arranged in the center of the top of the casing of the turbine, and a shaft is pivotally connected to the top of the support rod, and one end of the shaft is provided with a heavy ball. The other end is provided with a paddle. The vulcanization device of the vibration-cured rubber tire of the present invention removes the gas trapped between the inner wall of the mold and the green tire by the vibration generated by the eccentric rotation.

Description

Vulcanizing device and method for vibration curing rubber tire

Technical Field

The invention relates to the technical field of rubber tire processing, in particular to a vulcanizing device for a vibration cured rubber tire and a vulcanizing method for the vibration cured rubber tire.

Background

Pneumatic rubber tires are generally produced by vulcanizing a raw tire in a laminator for a certain period of time by inflating the tire while maintaining a certain pressure, the green tire having a flow-extending property at a certain temperature. The raw tire is tightly attached to the inner surface in the mold, and then the rubber tire finished product with higher strength and toughness can be obtained through shaping treatment.

In the prior art, a new tire is provided, in which a heat-expandable rubber is mixed into a green tire, especially a certain amount of foaming agent such as diazo, dinitroso and other compounds are mixed, and bubbles are generated on the surface of the tire by releasing nitrogen gas under high temperature, and the tire has low noise during running. However, it is not recognized that the uneven addition of the foaming agent tends to cause excessive gas generation in the local tread during vulcanization, leading to the generation of voids in the contact surface of the tread with the inner surface of the mold, leading to uneven thickness of the finally obtained shaped tire, increasing the defective rate, and causing productivity deterioration.

Therefore, there is a need for an improvement of the prior art to obtain a vulcanizing device for curing a rubber tire in which cavitation is not easily generated.

Disclosure of Invention

The invention aims at the technical problem and provides an improved vulcanizing device for curing a rubber tire, which reduces the generation of vacuoles by introducing a vibration mechanism.

The specific technical scheme is as follows: a vulcanizing device for a vibration curing rubber tire comprises a vulcanizing capsule 3 clinging to the inner wall of a green tire blank 2, an upper top plate 4 positioned above and a lower bottom plate 5 positioned below, wherein a closed inner cavity 8 is formed by the vulcanizing capsule 3, the upper top plate 4 and the lower bottom plate 5; the center of the lower bottom plate 5 is provided with a hole, a central pipeline 9 is arranged below the hole, and a turbine 10 is connected with the central pipeline 9 and is positioned in the inner cavity 8; a plurality of rings of annular heating pipes 101 are arranged in the turbine 10, and are divided into air outlets by a plurality of blades 102 arranged on the periphery; a support rod 103 is vertically arranged at the center of the top of the housing of the turbine 10, a shaft 104 is horizontally and pivotally connected to the top of the support rod 103, a heavy ball 105 is arranged at one end of the shaft 104, and a paddle 106 is arranged at the other end of the shaft 104.

In a preferred embodiment of the present invention, a first snap ring 6 is further disposed on the upper top plate 4, and a second snap ring 7 is further disposed below the lower bottom plate 5, wherein the first snap ring 6 and the second snap ring 7 are used for clamping the green tire 2 and the curing bladder 3.

In a preferred embodiment of the present invention, the paddle 106 is inclined downward such that the paddle 106 faces the air outlet. The paddle 106 drives the heavy ball 105 to rotate rapidly through the water vapor discharged from the air outlet.

In a preferred embodiment of the present invention, the blade 106 is angled at 15-45 degrees from the plane in which the blade 102 is located. The included angle is too small, so that the rotating speed is low, and the pushing force becomes small due to too large included angle. Preferably, the angle between the blade 106 and the plane of the blade 102 is 30 °.

In a preferred embodiment of the invention, the weight of the weight balls 105 is greater than the weight of the paddles 106. Due to the heavy weight of the heavy ball 105, the shaft 104 generates an eccentric action when rotating, and the unbalanced action can make the vulcanizing device generate slight vibration, and the cavitation generated in the contact surface of the tread and the inner surface of the mold can be discharged through the vibration process, so that the quality of the shaped tire is improved.

It is another object of the present invention to provide a method of vulcanizing a vibration cured rubber tire. It comprises the step of introducing pressurized high-temperature water vapor into the inner cavity 8.

As a preferred solution, the step of introducing the pressurized high-temperature steam includes introducing the pressurized high-temperature steam into the central duct 9 at the beginning of vulcanization, heating the steam by the heating pipe 101 under the action of the turbine 10, and discharging the steam into the inner cavity 8 through the air outlet, wherein the discharged steam pushes the paddles 106 to rotate and causes the shaft 104 to rotate, so that the steam vibrates while exchanging heat with the green tire 2.

The formed tire prepared by the method has the advantages of smooth surface and low void ratio.

The beneficial technical effects of the invention are as follows:

1. compared with the traditional rubber tire vulcanizing device, the vulcanizing device for the vibration curing rubber tire is more beneficial to the curing process of the thermal expansion rubber mixed with the foaming agent, even if the bubbles are generated in the contact surface of the tire tread and the inner surface of the mold, the bubbles can be discharged through eccentric vibration, so the produced tire has low void ratio and high yield.

2. The vibrating mechanism in the vulcanizing device for vibrating and curing the rubber tire is pushed by air flow, so that additional electrical equipment is avoided, the structure is simple, and the production cost and the maintenance cost are low.

Drawings

FIG. 1 is a schematic side sectional view of a preferred embodiment of the present invention.

Specifically, the method comprises the steps of 1-vulcanizing device, 2-green tire blank, 3-vulcanizing capsule, 4-upper top plate, 5-lower bottom plate, 6-first snap ring, 7-second snap ring, 8-inner cavity, 9-central pipeline, 10-turbine, 101-heating pipe, 102-blade, 103-supporting rod, 104-shaft rod, 105-heavy ball and 106-blade.

Detailed Description

Hereinafter, the present invention will be described in detail by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

FIG. 1 is a schematic side sectional view of a preferred apparatus for vulcanizing a vibration cured rubber tire according to the present invention. The vulcanisation apparatus 1 is rotationally symmetrical about the axis a-a'.

The specific structure comprises a vulcanization capsule 3 clinging to the inner wall of a green tire blank 2, an upper top plate 4 positioned above and a lower bottom plate 5 positioned below, wherein a closed inner cavity 8 is formed by the vulcanization capsule 3, the upper top plate 4 and the lower bottom plate 5; the center of the lower bottom plate 5 is provided with a hole, a central pipeline 9 is arranged below the hole, and a turbine 10 is connected with the central pipeline 9 and is positioned in the inner cavity 8; a plurality of rings of annular heating pipes 101 are arranged in the turbine 10, and are divided into air outlets by a plurality of blades 102 arranged on the periphery; a support rod 103 is vertically arranged at the center of the top of the housing of the turbine 10, a shaft 104 is horizontally and pivotally connected to the top of the support rod 103, a heavy ball 105 is arranged at one end of the shaft 104, and a paddle 106 is arranged at the other end of the shaft 104.

Specifically, still set up first snap ring 6 on the roof 4, still set up second snap ring 7 under the lower plate 5, first snap ring 6 and second snap ring 7 are used for blocking green tyre 2 and curing bladder 3.

More specifically, the paddle 106 is inclined downward such that the paddle 106 faces the air outlet. The paddle 106 drives the heavy ball 105 to rotate rapidly through the water vapor discharged from the air outlet.

More specifically, the paddle 106 is angled 30 ° from the plane in which the blade 102 is located.

More specifically, the weight of the weight ball 105 is greater than the weight of the paddle 106.

The working principle of the vulcanizing device for the vibration curing rubber tire is as follows: the green tyre blank 2 is placed in a mould, a vulcanizing device 1 is also included inside the green tyre blank 2, wherein the bladder wall of the vulcanizing bladder 3 is tightly attached to the inner wall of the green tyre blank 2, the vulcanizing bladder 3 is provided with a closed inner cavity 8, and the vulcanizing bladder 3 extrudes the green tyre blank 2 to the inner wall of the mould under high pressure by introducing hot fluid into the inner cavity 8. When vulcanization starts, pressurized high-temperature water vapor is introduced into the central pipe 9, and under the action of the turbine 10, the water vapor is heated by the heating pipe 101, discharged into the inner cavity 8 from the air outlet, and discharged through the discharge pipe arranged in the central pipe 9, so that circulation of the high-temperature water vapor in the inner cavity 8 is completed. During the process of discharging the high-temperature water vapor from the air outlet into the inner cavity 8, the water vapor pushes the blades 106 to rotate, and the shaft rod 104 is rotated. Since the weight of the heavy balls 105 is greater than that of the paddles 106, the shaft 104 is eccentric when rotated, causing the steam to vibrate while exchanging heat with the green tire 2. The vibration can discharge the cavitation generated in the contact surface of the tread and the inner surface of the mold.

The above detailed description of the particularly preferred embodiments of the present invention is not intended to limit the present invention to the above embodiments. And may be modified to be implemented in various ways. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A vulcanization device for a vibration-cured rubber tire, characterized in that it comprises a vulcanization bladder (3) that is close to the inner wall of a green tire blank (2), an upper top plate (4) located above, and a lower bottom plate (5) located below ), and a closed inner cavity (8) is formed by the vulcanization bladder (3), the upper top plate (4) and the lower bottom plate (5); the central opening of the lower bottom plate (5) is provided with a central pipe (9). ), and is connected with the central pipe (9), and is located in the inner cavity (8) of the turbine (10); the turbine (10) is provided with several rings of annular heating pipes (101), and a number of blades arranged around (102) is divided into air outlets; a support rod (103) is also vertically arranged in the center of the top of the casing of the turbine (10), and a shaft (104) is pivotally connected to the top of the support rod (103) horizontally. One end of the rod (104) is provided with a heavy ball (105), and the other end of the shaft (104) is provided with a paddle (106);

A first snap ring (6) is further arranged on the upper top plate (4), a second snap ring (7) is also arranged under the lower bottom plate (5), the first snap ring (6) and the second snap ring (7) ) for jamming the green tire body (2) and the curing bladder (3);

The paddle (106) is inclined downward, so that the paddle (106) is facing the air outlet;

The weight of the heavy ball (105) is greater than the weight of the paddle (106).

2 . The vulcanization device for vibration-cured rubber tires according to claim 1 , wherein the paddle ( 106 ) forms an included angle of 15-45° with the surface where the blade ( 102 ) is located. 3 .

3. A vulcanization method for a vibration-cured rubber tire, using the vulcanization device of the vibration-cured rubber tire as claimed in claim 2 to vulcanize the green tire (2), characterized in that: comprising feeding the inner cavity (8) with a The step of pressing high temperature water vapor.

4. The vulcanization method of a vibration-cured rubber tire according to claim 3, wherein the step of introducing pressurized high-temperature water vapor comprises introducing the pressurized high-temperature water vapor into the central pipeline (9 when vulcanization begins) ), under the action of the turbine (10), the water vapor is heated by the heating pipe (101) and discharged into the inner cavity (8) from the air outlet, and the discharged water vapor pushes the paddle (106) to rotate, And the shaft (104) is rotated, so that the water vapor and the green tire green (2) are exchanged with heat and vibrate at the same time.