Tire molding technology
A technology of tire molding and technology, which is applied in the field of tire manufacturing, can solve the problems affecting the wear resistance, cutting resistance and puncture resistance of finished tires, and the impact of tread compactness, so as to facilitate retreading and recycling and reduce product quality problems , the effect of thickness reduction
Inactive Publication Date: 2014-06-11
HAOHUA SOUTH CHINAGUILIN RUBBER
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Problems solved by technology
Since the tread and carcass in the traditional molding process are unvulcanized, when they are vulcanized in the vulcanizer, the tread and carcass will be stretched, and the compactness of the tread will be affected, which in turn will affect the tire. Abrasion, cut and puncture resistance of the finished product
Method used
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Embodiment 1
[0016] 1) Determine that the tire to be manufactured is a large mechanical engineering tire (23.5-25 inch series), and determine the formula of the rubber material of each part of the tire according to the design requirements;
[0017] 2) Make the carcass excluding the tread on the molding machine according to the traditional process, and set it aside;
[0018] 3) Carry out rubber mixing and tread extruding to the tread rubber material according to the existing conventional process, and place the extruded tread in a flat plate vulcanization at 70Kg / cm 2 Pre-vulcanized for 40 minutes under pressure conditions to obtain pre-vulcanized tread;
[0019] 4) Grind the back of the pre-vulcanized tread, and then put glue on it and put the carcass in a ring vulcanizing machine for vulcanization. Control the internal temperature to 160-170°C and the external temperature to 100- 120°C, the vulcanization time is 150-180min, and the finished pre-vulcanized engineering tire can be obtained....
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The invention discloses a tire molding technology comprising the following steps: fabricating a tread and a tire body, particularly, putting the tread under the pressure condition of 60-75Kg / cm<2> to procure for 30-60 minutes, so as to obtain a precured tread; polishing the precured tread; coating adhesive cement and then attaching to the tire body, and putting into a vulcanizing machine for carrying out sizing and vulcanizing, so as to obtain the product tire. Compared with the prior art, in the technology, the tread of the tire is produced in a precuring mode, and the tread is high in compactness, so that the tire has the relatively good wear-resisting property, puncture resistance and cutting resistance. Thus, the service life of the tire is greatly prolonged. In addition, the tread and the tire body are separately fabricated, the tire billet molding thickness is greatly reduced, the gas storage possibility of the tire body is reduced, and the product quality is relatively stable. The tread and the tire body are separately fabricated, and only one is scraped when a quality problem appears, so that the waste of inferior-quality products can be reduced.
Description
technical field [0001] The invention relates to the technical field of tire manufacturing, in particular to a tire molding process. Background technique [0002] The traditional tire molding is to make the tread according to the design requirements of the tire, form the carcass on the molding machine, and then bond or wind the carcass and the tread on the molding machine to form a blank (the blank All parts of the rubber are not vulcanized), and then put it in a vulcanizing machine for vulcanization to get the finished product. In the traditional molding process, the internal temperature during vulcanization is 160-170°C, the external temperature is 130-140°C, and the vulcanization pressure is 28-35Kg / cm 2 . Since the tread and carcass in the traditional molding process are unvulcanized, when they are vulcanized in the vulcanizer, the tread and carcass will be stretched, and the compactness of the tread will be affected, which in turn will affect the tire. Wear resistance...
Claims
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IPC IPC(8): B29D30/08
Inventor 杨得兵
Owner HAOHUA SOUTH CHINAGUILIN RUBBER