阅读说明：本技术 一种汽车胶管硫化方法 (Automobile rubber pipe vulcanization method ) 是由 王开 刘丁源 马明强 于海兵 押维峰 于 2020-09-04 设计创作，主要内容包括：本发明公开了一种汽车胶管硫化方法,包括：将挤出好的胶管放入硫化罐中；将蒸汽通入胶管内,使胶管内的空气排出；将蒸汽通入硫化罐内,使硫化罐中的空气排出；继续通入蒸汽,使硫化罐升温,开始硫化。本发明能将胶管内壁的氧气排除,保证了产品内外壁均可硫化成熟,避免因硫化不成熟胶管内壁出现粘连,因此所带来的爆管风险,因为胶管内也通有蒸汽,通气使胶管内壁撑开,胶管不会被通入硫化罐内的蒸汽挤压变形,使得下一步成型更加简单,同时因为胶管内外壁均可硫化成熟,也避免出现了喷霜现象。(The invention discloses a method for vulcanizing an automobile rubber tube, which comprises the following steps: putting the extruded rubber tube into a vulcanizing tank; introducing steam into the rubber tube to exhaust air in the rubber tube; introducing steam into the vulcanizing tank to discharge air in the vulcanizing tank; and continuously introducing steam to heat the vulcanizing tank and start vulcanizing. The invention can remove oxygen on the inner wall of the rubber tube, ensures that both the inner wall and the outer wall of a product can be vulcanized to be mature, avoids the risk of tube explosion caused by adhesion of the inner wall of the rubber tube due to the immature vulcanization, ensures that the inner wall of the rubber tube is spread by ventilation because the rubber tube is also communicated with steam, and prevents the rubber tube from being extruded and deformed by the steam introduced into the vulcanizing tank, so that the next step of molding is simpler, and simultaneously avoids the phenomenon of frost spraying because both the inner wall and the outer wall of the rubber tube can be vulcanized to be mature.)

1. A method for vulcanizing an automobile rubber hose is characterized by comprising the following steps:

putting the extruded rubber tube into a vulcanizing tank;

introducing steam into the rubber tube to exhaust air in the rubber tube;

introducing steam into the vulcanizing tank to discharge air in the vulcanizing tank;

and continuously introducing steam to heat the vulcanizing tank and start vulcanizing.

2. The method for vulcanizing the automobile rubber hose according to claim 1, characterized in that: the vulcanizing tank is characterized by also comprising a vulcanizing plate, wherein the extruded rubber tube plate is placed on the vulcanizing plate, and the vulcanizing plate and the rubber tube are placed into the vulcanizing tank together.

3. The method for vulcanizing the automobile rubber hose according to claim 2, characterized in that: and talcum powder is paved on the vulcanizing disc.

4. The method for vulcanizing the automobile rubber hose according to claim 1, characterized in that: let in the hose with steam, make the air escape in the hose include: and one port of the air inlet pipe is connected with one port of the rubber pipe, and the other port of the air inlet pipe is connected with the steam inlet pipe of the vulcanizing tank.

5. The method for vulcanizing the automobile rubber hose according to claim 1, characterized in that: and (3) introducing steam into the vulcanizing tank to exhaust air in the vulcanizing tank, wherein the period of introducing the steam is 3-5 minutes.

6. The method for vulcanizing the automobile rubber hose according to claim 1, characterized in that: and continuously introducing steam to heat the vulcanizing tank to start vulcanizing, wherein the vulcanizing is heated to 175-185 ℃ and vulcanized for 30-60 minutes at the temperature of 175-185 ℃.

Technical Field

The invention relates to the field of automobiles, in particular to a vulcanization method of an automobile rubber tube.

Background

The temperature around the radiator rubber tube under the automobile hood is usually 120-150 ℃, the temperature of the automobile cooling liquid during the running process when the local highest temperature reaches 175 ℃ (or higher) can reach 90-140 ℃, and for the radiator cooling liquid rubber tube of the automobile (non-turbocharged engine), EPDM is the most excellent elastomer material, and when the EPDM is used for the radiator rubber tube, the EPDM has good heat resistance and ozone resistance, and also has excellent oil resistance and chemical stability. For reasons that peroxide curing of rubber compounds leads to tacky internal and external surfaces of the cured rubber compound under aerobic conditions, it is important to exclude air (primarily oxygen) from the curing oven.

At present, the common production process of the rubber tube of the radiator still comprises the steps of firstly extruding the inner layer and the outer layer of the rubber tube and winding the rubber tube on a vulcanizing disc, coiling the rubber tube from the inner ring to the outer ring through a rotating disc, then vulcanizing the rubber tube in a vulcanizing tank, and injecting steam and opening an exhaust valve to completely exhaust oxygen in the vulcanizing tank while the rubber tube is in operation.

But present technological process is because there is a small amount of oxygen in the rubber tube, lets in steam and can't get rid of remaining oxygen in the rubber tube to vulcanizing tank in simple, and the result can lead to: 1. the rubber tube is extruded and deformed, so that the next step of forming is difficult; 2. the inner wall of the rubber tube is not vulcanized to be mature and leads to adhesion, and the risk of tube explosion is caused after the rubber tube is installed; 3. part of peroxide can be vulcanized and matured but blooming can occur, and the white frost sprayed on the inner wall of the hose can cause skin allergy.

Disclosure of Invention

The invention aims to solve the problems and provides a vulcanization method of an automobile rubber hose, which can vulcanize the inner wall and the outer wall of the rubber hose to be mature.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a method of vulcanizing an automotive hose, comprising:

putting the extruded rubber tube into a vulcanizing tank;

introducing steam into the rubber tube to exhaust air in the rubber tube;

introducing steam into the vulcanizing tank to discharge air in the vulcanizing tank;

and continuously introducing steam to heat the vulcanizing tank and start vulcanizing. .

Optionally, the vulcanizing tank further comprises a vulcanizing disc, the extruded rubber tube disc is placed on the vulcanizing disc, and the vulcanizing disc and the rubber tube are placed into the vulcanizing tank together.

Optionally, talc powder is spread on the vulcanizing disc.

Optionally, introducing steam into the rubber tube to exhaust air in the rubber tube includes: and one end of the air inlet pipe is connected with one end of the rubber pipe, and the other end of the air inlet pipe is connected with the steam inlet pipe of the vulcanizing tank.

Optionally, steam is introduced into the vulcanizing tank to exhaust air in the vulcanizing tank, wherein the period of introducing the steam is 3-5 minutes.

Optionally, continuously introducing steam, heating the vulcanizing tank to start vulcanizing, wherein the vulcanizing is heated to 175-185 ℃ and vulcanized for 30-60 minutes at 175-185 ℃.

Compared with the prior art, the invention has the technical progress that:

according to the invention, steam is introduced into the rubber tube when the steam is introduced into the vulcanizing tank, and oxygen on the inner wall of the rubber tube can be discharged in a manner of introducing the steam into the rubber tube, so that the inner wall and the outer wall of a product can be vulcanized to be mature, and the pipe explosion risk caused by adhesion of the inner wall of the rubber tube due to immature vulcanization is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of a sulfidation disk of the present invention.

In the figure:

1-a vulcanizing disc, 2-a rubber hose and 3-an air inlet pipe.

Detailed Description

The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

When the rubber of the peroxide vulcanization system is in a crosslinking process and oxygen exists, free radicals of the polymer can be combined with oxygen molecules to form hydrocarbon (oxygen) peroxy free radicals, and as a result, the polymer is degraded, so in the peroxide crosslinking process, if the oxygen is not removed, the surface of a rubber product can be adhered to present a state of partial lack of sulfur, the method for solving the problem at present is an air replacement method, a rubber pipe to be vulcanized is placed into a vulcanization tank during operation, then water vapor is filled into the vulcanization tank, so that the air in the vulcanization tank is discharged, and then normal vulcanization is carried out, but in the existing process, because a small amount of oxygen is remained in the rubber pipe, the residual oxygen in the rubber pipe cannot be discharged by simply introducing the steam into the vulcanization tank, and as a result, the following steps can be caused: 1. the rubber tube is extruded and deformed, so that the next step of forming is difficult; 2. the inner wall of the rubber tube is not vulcanized to be mature and leads to adhesion, and the risk of tube explosion is caused after the rubber tube is installed; 3. the invention discloses a vulcanization method of an automobile rubber hose, which solves the problems that part of peroxide can be vulcanized and matured but can generate blooming, and white frost sprayed on the inner wall of the rubber hose can cause skin allergy, and the method comprises the following steps:

placing the extruded rubber tube 2 into a vulcanizing tank;

introducing steam into the rubber tube 2 to discharge air in the rubber tube 2;

introducing steam into the vulcanizing tank to discharge air in the vulcanizing tank;

and continuously introducing steam to heat the vulcanizing tank and start vulcanizing.

Specifically, as shown in fig. 1, the vulcanizing pan 1 is further included, in order to prevent the rubber tube 2 from being adhered after vulcanization, talcum powder is laid on the vulcanizing pan 1, the extruded rubber tube 2 is placed on the vulcanizing pan 1, the vulcanizing pan 1 and the rubber tube 2 are placed into a vulcanizing tank together, one port of the rubber tube 2 is connected with an air inlet pipe 3, the other port of the air inlet pipe 3 is connected with a steam inlet pipe of the vulcanizing tank, steam is also introduced into the rubber tube 2 through the air inlet pipe 3 when steam is introduced into the vulcanizing tank, oxygen in the rubber tube 2 is removed completely by introducing steam into the rubber tube 2, wherein the time for introducing steam into the vulcanizing tank and the rubber tube 2 is 3-5 minutes, then an air outlet valve on the vulcanizing tank is closed, steam is continuously introduced into the vulcanizing tank, the vulcanizing tank is heated to 175-185 ℃, and vulcanization is carried out at the temperature of 175-185 ℃ for 30-60 minutes, the invention can cure the product with the length of 500 meters at the longest. The invention can remove oxygen on the inner wall of the rubber tube 2, ensures that both the inner wall and the outer wall of a product can be vulcanized to be mature, avoids the risk of tube explosion caused by adhesion of the inner wall of the rubber tube 2 which is not vulcanized, and ensures that the inner wall of the rubber tube 2 is spread by ventilation because the rubber tube 2 is also communicated with steam, and the rubber tube 2 can not be extruded and deformed by the steam introduced into the vulcanizing tank, so that the next step of molding is simpler, and simultaneously, the inner wall and the outer wall of the rubber tube 2 can be vulcanized to be mature, and the phenomenon of frost spraying.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.