Processing technology of high-strength rubber sealing gasket for tire valve

A technology of rubber sealing and processing technology, which is applied in the field of valve manufacturing, can solve the problems of insufficient softness and homogeneity of rubber gaskets, and achieve the effects of stable deformation, good homogeneity, and good oil resistance

Pending Publication Date: 2022-07-12
江阴市昌雄金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are some shortcomings in the production of existing high-strength rubber gaskets, such as: the softness and homogeneity of the rubber gaskets produced are insufficient, and improvement is needed

Method used

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  • Processing technology of high-strength rubber sealing gasket for tire valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 , a processing technology of high-strength rubber sealing gasket for tire valve, comprising the following steps:

[0026] S1. Vulcanization: Put the butyl rubber into the vulcanizer and adopt three-stage stepped vulcanization, including the preheating stage, the heat preservation stage and the cooling stage; in the preheating stage, the pressure is maintained at 0.4MPA before the temperature rises to 100 °C; in the heat preservation stage, When the temperature rises to 100°C, the pressure is maintained at 0.3MPA; in the cooling stage, the pressure is maintained at 0.4MPA when the temperature is lowered to 80°C;

[0027] S2. Open mill: Use an open mill to mill the rubber, and after a lot of thin pass treatment, a rubber roll is formed. The distance between the two rolls of the mill is controlled to be 2mm, and the roll temperature is controlled below 50 °C;

[0028] S3. Kneading: After controlling the temperature of the internal mixer to 52°C, simultan...

Embodiment 2

[0040] refer to figure 1 , a processing technology of high-strength rubber sealing gasket for tire valve, comprising the following steps:

[0041] S1. Vulcanization: Put the butyl rubber into the vulcanizer and adopt three-stage step vulcanization, including the preheating stage, the heat preservation stage and the cooling stage; in the preheating stage, the pressure is maintained at 0.5MPA before the temperature rises to 100 °C; in the heat preservation stage, When the temperature rises to 120°C, the pressure is maintained at 0.4MPA; in the cooling stage, the pressure is maintained at 0.5MPA when the temperature is lowered to 80°C;

[0042] S2. Open mill: use an open mill to mill the rubber, and after a lot of thin pass treatment, a rubber roll is formed.

[0043] S3. Kneading: After controlling the temperature of the internal mixer to 60 °C, simultaneously put in anti-scorch agent, filler and softener for kneading;

[0044] S4. Molding: place the compounded rubber blank in...

Embodiment 3

[0055] refer to figure 1 , a processing technology of high-strength rubber sealing gasket for tire valve, comprising the following steps:

[0056] S1. Vulcanization: Put the butyl rubber into the vulcanizer and adopt three-stage step vulcanization, including the preheating stage, the heat preservation stage and the cooling stage; in the preheating stage, the pressure is maintained at 0.45MPA before the temperature rises to 100 °C; in the heat preservation stage, When the temperature rises to 115°C, the pressure is maintained at 0.35MPA; in the cooling stage, the pressure is maintained at 0.4MPA when the temperature is lowered to 80°C;

[0057] S2. Open mill: use an open mill to mill the rubber, and then form a rubber roll after a lot of thin pass treatment. The distance between the two rolls of the mill is controlled to be 3mm, and the roll temperature is controlled below 50 °C;

[0058] S3. Kneading: After controlling the temperature of the internal mixer to 56°C, simultaneo...

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Abstract

According to the technical scheme, the processing technology is characterized by comprising the following steps that S1, vulcanization is conducted, specifically, butyl rubber is put into a vulcanizing machine, and three-section stepped vulcanization is adopted and comprises the preheating stage, the heat preservation stage and the cooling stage; s2, open milling: performing open milling on the rubber by using an open mill, performing thin-passing treatment to form a rubber roll, controlling the distance between two rollers of the open mill to be 2-3mm, and controlling the temperature of the rollers to be 50 DEG C or below; s3, mixing: controlling the temperature of the internal mixer to be 52-60 DEG C, and meanwhile, adding a scorch retarder for mixing; s4, mold pressing: putting the mixed rubber blank into a mold, performing compression molding by using a press vulcanizer, and injecting air into a mold cavity during mold opening for demolding; s5, trimming and shaping; s6, detecting; according to the processing technology of the high-strength rubber sealing gasket for the tire valve, the sealing gasket which is high in softness, good in homogeneity, stable in deformation degree and good in oil resistance can be manufactured, and the production technology is simple.

Description

technical field [0001] The invention relates to the field of valve manufacturing, in particular to a processing technology of a high-strength rubber sealing gasket for a tire valve. Background technique [0002] The valve is an independent valve body device that allows gas to enter the tubeless tire when opened, and automatically closes and seals the gas to generate air pressure to prevent the gas from escaping the tire or inner tube. The end of the valve is fixed with a high-strength rubber gasket piece. [0003] The existing high-strength rubber sealing gaskets have some shortcomings in the production, such as: the softness and homogeneity of the produced rubber sealing gaskets are insufficient, which needs to be improved. SUMMARY OF THE INVENTION [0004] In view of the problems mentioned in the background art, the purpose of the present invention is to provide a processing technology of a high-strength rubber sealing gasket for tire valves, so as to solve the problems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/32B29C35/02B29B7/74B29L31/26
CPCB29C43/02B29C43/32B29C35/0288B29B7/005B29B7/7461B29L2031/265
Inventor 赵胜安通旭
Owner 江阴市昌雄金属科技有限公司
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