阅读说明：本技术 一种轮胎翻新方法 (Tire retreading method ) 是由 王彩霞 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种轮胎翻新方法,属于轮胎翻新技术领域,包括如下步骤：(1)清洁检测处理、(2)压胶定型处理、(3)充气定型处理、(4)硫化处理、(5)检验修整处理。本发明提供了一种新型的轮胎翻新处理方法,其步骤相对简单,工艺设置规范,利于工业化推广应用,翻新处理后的轮胎表面具有轮胎滚动阻力低、能耗小、表面强度高、综合品质好的特点。(The invention discloses a tire retreading method, which belongs to the technical field of tire retreading and comprises the following steps: (1) cleaning detection treatment, (2) glue pressing and shaping treatment, (3) inflation and shaping treatment, (4) vulcanization treatment, and (5) inspection and finishing treatment. The invention provides a novel tire retreading treatment method which has relatively simple steps and standard process setting and is beneficial to industrial popularization and application, and the tire surface after retreading treatment has the characteristics of low tire rolling resistance, small energy consumption, high surface strength and good comprehensive quality.)

1. A method of retreading a tire, comprising the steps of:

(1) cleaning and detecting treatment:

cleaning and drying the old tire suitable for retreading, and then carrying out inflation detection processing;

(2) pressing and sizing:

polishing the tire tread treated in the step (1), and then performing rubber pressing and shaping treatment on the tire tread by using a prepared retreading special rubber material;

(3) and (3) inflating and shaping treatment:

fixing the tire treated in the step (2) on a mold for inflation shaping treatment;

(4) and (3) vulcanization treatment:

putting the tire treated in the step (3) into a vulcanizing tank for vulcanizing, and taking out for later use after the vulcanizing is finished;

(5) and (3) checking and finishing treatment:

and (5) inspecting and finishing the tire treated in the step (4), and warehousing after the quality is qualified.

2. The tire retreading method as recited in claim 1, wherein the inflation detection process in the step (1) controls the inflation pressure to be 4.0 to 4.3kgf/cm²。

3. The method for retreading a tire as claimed in claim 1, wherein the retreading specific rubber compound in step (2) is composed of the following materials in parts by weight: 70-75 parts of natural rubber, 35-40 parts of butadiene rubber, 20-25 parts of styrene-acrylic rubber, 20-25 parts of carbon black, 5-8 parts of nano zinc oxide, 3-6 parts of silane coupling agent, 4-7 parts of sodium pyrophosphate, 1-3 parts of dispersing agent, 2-4 parts of anti-aging agent, 1-4 parts of sulfur, 2-3 parts of accelerator and 0.1-0.4 part of anti-scorching agent.

4. A method for retreading a tire as claimed in claim 3, wherein said retreading specific rubber compound in step (2) is composed of the following materials in parts by weight: 73 parts of natural rubber, 38 parts of butadiene rubber, 22 parts of styrene-acrylic rubber, 24 parts of carbon black, 7 parts of nano zinc oxide, 5 parts of silane coupling agent, 6 parts of sodium pyrophosphate, 2 parts of dispersing agent, 3 parts of anti-aging agent, 3 parts of sulfur, 2.5 parts of accelerating agent and 0.3 part of anti-scorching agent.

5. A tyre retreading method as claimed in claim 3, wherein the specific operation of the vulcanization treatment in the step (4) is:

1) firstly, inflating and pressurizing the inner can and the inner tube, and after 15-20 min, enabling the pressure in the inner can to reach 3.8-4.2 kgf/cm²The pressure of the inner tube reaches 4.5-4.7 kgf/cm²To shape the inner tube;

2) continuously inflating the inner can and the inner tube, and after 10-15 min, enabling the pressure in the inner can to reach 4.6-4.8 kgf/cm²Controlling the temperature in the tank to be 75-80 ℃, and starting to inflate the outer envelope at the moment;

3) continuously inflating for 25-30 min until the pressure in the tank reaches 5.7-6.9 kgf/cm²The shaping pressure of the inner tube reaches 6.0kgf/cm²The outer envelope reaches 4.2kgf/cm²Controlling the temperature in the tank to be 108-112 ℃;

4) continuously inflating, controlling the temperature in the tank to 120-127 ℃ after 15-20 min, and simultaneously carrying out ultrasonic treatment, wherein vulcanization treatment is carried out for 2-3 h at the temperature;

5) and (3) bringing the temperature in the tank to 100-105 ℃, standing for 40-50 min at the temperature, and taking out.

6. The method for retreading a tire as claimed in claim 5, wherein the frequency of the ultrasonic wave is controlled to be 400-500 kHz during the ultrasonic treatment in the step 4).

7. A tire retreading method as recited in claim 3, wherein said checking in step (5) comprises inflation detection and visual inspection; the pressure for controlling the inflation in the inflation detection is 4.0-4.3 kgf/cm²。

Technical Field

The invention belongs to the technical field of tire retreading, and particularly relates to a novel tire retreading method.

Background

With the rapid development of economy, the quantity of private cars is increased, and the quantity of car tires scrapped every year is also extremely striking. In these old tires, a small portion is worn and punctured, and most of them are substantially good as the carcass. If the tire is discarded, not only the environmental pollution but also the resource waste can be caused. At present, the tire retreading is common in the repeated use of the old tire, wherein the used methods comprise an old tire re-embossing method, a high-temperature hot-rolling method and the like, and the methods are gradually eliminated due to the defects of more operation steps, high investment cost, poor wear resistance of the manufactured tire, easy glue opening, low safety performance and the like. The method has no better tire retreading method, which directly causes that the retreading rate of the waste tire in China is very low, and the waste tire with a good tire body cannot be fully utilized. In addition, the existing retreading treatment methods mostly have the problems of high rolling resistance of tires, high energy consumption, environmental pollution and the like.

Disclosure of Invention

The invention aims to provide a novel tire retreading method.

The technical purpose of the invention is realized by the following technical scheme:

a tire retreading method comprising the steps of:

(1) cleaning and detecting treatment:

cleaning and drying the old tire suitable for retreading, and then carrying out inflation detection processing;

(2) pressing and sizing:

polishing the tire tread treated in the step (1), and then performing rubber pressing and shaping treatment on the tire tread by using a prepared retreading special rubber material;

(3) and (3) inflating and shaping treatment:

fixing the tire treated in the step (2) on a mold for inflation shaping treatment;

(4) and (3) vulcanization treatment:

putting the tire treated in the step (3) into a vulcanizing tank for vulcanizing, and taking out for later use after the vulcanizing is finished;

(5) and (3) checking and finishing treatment:

and (5) inspecting and finishing the tire treated in the step (4), and warehousing the tire after the quality is qualified.

Further, the inflation detection processing in the step (1) controls the inflation pressure to be 4.0 to 4.3kgf/cm²。

Further, the special retreading sizing material in the step (2) is composed of the following substances in parts by weight: 70-75 parts of natural rubber, 35-40 parts of butadiene rubber, 20-25 parts of styrene-acrylic rubber, 20-25 parts of carbon black, 5-8 parts of nano zinc oxide, 3-6 parts of a silane coupling agent, 4-7 parts of sodium pyrophosphate, 1-3 parts of a dispersing agent, 2-4 parts of an anti-aging agent, 1-4 parts of sulfur, 2-3 parts of an accelerator and 0.1-0.4 part of an anti-scorching agent.

Further, the special retreading sizing material in the step (2) is composed of the following substances in parts by weight: 73 parts of natural rubber, 38 parts of butadiene rubber, 22 parts of styrene-acrylic rubber, 24 parts of carbon black, 7 parts of nano zinc oxide, 5 parts of silane coupling agent, 6 parts of sodium pyrophosphate, 2 parts of dispersing agent, 3 parts of anti-aging agent, 3 parts of sulfur, 2.5 parts of accelerator and 0.3 part of scorch retarder.

Further, the specific operations of the vulcanization treatment in the step (4) are:

1) firstly, inflating and pressurizing the inner tank and the inner tube, and after 15-20 min, enabling the pressure in the tank to reach 3.8-4.2 kgf/cm²The pressure of the inner tube reaches 4.5-4.7 kgf/cm²The inner tube is shaped;

2) continuously inflating the inner can and the inner tube, and after 10-15 min, enabling the pressure in the inner can to reach 4.6-4.8 kgf/cm²Controlling the temperature in the tank to be 75-80 ℃, and starting to inflate the outer sealing sleeve at the moment;

3) continuously inflating for 25-30 min until the pressure in the tank reaches 5.7-6.9 kgf/cm²The shaping pressure of the inner tube reaches 6.0kgf/cm²The outer envelope reaches 4.2kgf/cm²Controlling the temperature in the tank to be 108-112 ℃;

4) continuously inflating, controlling the temperature in the tank to 120-127 ℃ after 15-20 min, and simultaneously carrying out ultrasonic treatment, wherein vulcanization treatment is carried out for 2-3 h at the temperature;

5) and (3) bringing the temperature in the tank to 100-105 ℃, standing for 40-50 min at the temperature, and taking out.

Further, the frequency of the ultrasonic wave is controlled to be 400-500 kHz during the ultrasonic treatment in the step 4).

Further, the inspection in the step (5) comprises an aeration inspection and an appearance inspection; the pressure for controlling the inflation in the inflation detection is 4.0-4.3 kgf/cm²。

Compared with the prior art, the invention has the following advantages:

the invention provides a novel tire retreading treatment method, which has relatively simple steps and standard process setting, is beneficial to industrialized popularization and application, and uses a special retreading sizing material in the treatment process, wherein natural rubber, butadiene rubber and styrene-acrylic rubber in proper weight proportion are used as main materials, thereby optimizing the elasticity of the tread, reducing the phenomenon of compression heat generation, and matching with the use of carbon black and nano zinc oxide, enhancing the wear resistance of the tread, ensuring the use quality of the tire, then carrying out vulcanization treatment, utilizing multi-section strict temperature control and temperature rise vulcanization treatment, being beneficial to improving the dispersion uniformity of fillers such as white carbon black and the like, avoiding the problem of sizing material vulcanization agglomeration, carrying out ultrasonic treatment during high-temperature vulcanization, further optimizing the effect on the one hand, and enhancing the fillers, the sizing material and the like, The combination strength between the rubber material and the matrix tread rubber well improves the quality of the retreaded tire. The tire surface after the renovation treatment by the method has the characteristics of low rolling resistance, low energy consumption, high surface strength and good comprehensive quality, and has great market competitiveness and popularization and application values.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.