Novel process and equipment for vulcanizing rubber inner tire

Abstract

The invention discloses a novel process and novel equipment for vulcanizing a rubber inner tire, belongs to the rubber processing process and equipment, and particularly relates to the process and the equipment for vulcanizing the rubber inner tire. The novel process for vulcanizing the rubber inner tire is characterized in that after being subjected to oil removing, water removing and oil and gas separation, compressed air provided by an air compressor is heated by a heat exchanger and is introduced into a semi-finished product of an inner tire in a vulcanizing machine, the temperature of the gas is 180 to 185 DEG C, the pressure is 0.8 to 1.00MPa, and heat-conducting oil of which the temperature is 180 to 185 DEG C is used in a steam chamber outside a mold cavity of the vulcanizing machine. A vulcanizing inner pressure medium is changed into compressed air from saturated steam, the temperature and the pressure of the air are improved, the heat conducting effect on the semi-finished product is improved, the vulcanizing speed is increased, the vulcanizing time is shortened, the bonding strength between a rubber base air valve pedestal and the tire body, the tensile strength of a joint, the tensile strength of the tire body, and the compactness of a tire body rubber material are improved, the process flow property of a rubber material is improved simultaneously, more appearance defects are reduced, and the overall air-tightness of the inner tire is improved.

Description

technical field [0001] The invention belongs to rubber processing technology and equipment, in particular to rubber inner tube vulcanization technology and equipment. Background technique [0002] The traditional natural rubber inner tube vulcanization production process uses saturated steam as the internal pressure medium with a pressure of 0.60±0.02MPa. The disadvantage of this process is that water below 100°C is produced due to the liquefaction of the internal medium, which easily causes insufficient sulfur and pads at the mouth. Cracks, the adhesion strength of the nozzle is not enough, internal and external cracks are prone to appear in the joints, resulting in low joint strength, local sulfur deficiency in the carcass, and early damage to the sulfur deficiency parts during the use of the product. Therefore, in the rubber industry, the quality of the inner tube has been in an unstable state, and the ideal product pass rate also remains at about 95%. Contents of the i...

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Problems solved by technology

[0002] The traditional natural rubber inner tube vulcanization production process uses saturated steam as the internal pressure medium, and the pressure is 0.60±0.02MPa. The disadvantage of this process is that water below 100°C is produced due to the liquefaction of the internal medium, resulting in insufficient sulfur and pads at the mouth. Cracks, the adhesion strength of the mouth is not enough, internal and external cracks are prone to appear in the joint parts, resulting in low joint strength, partial sulfur deficiency in the carcass, and early damage to the sulfur deficiency parts during the use of the product

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