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Production process of radial tire

A radial tire and production process technology, applied in tires, other household appliances, household appliances, etc., can solve the problem of carcass joint uniformity, the effect of solving the problem is not good, the effect of secondary aggregation is not good, and the degree of vulcanization cannot be completely solved, etc. problems, to ensure the uniformity of mixing, the degree of vulcanization is uniform, and the effect of avoiding loosening

Active Publication Date: 2011-11-16
山东新豪克轮胎有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing radial tire production banburying process, the effect of solving the secondary aggregation is not good. In the forming process, the problem of air bubbles in the inner liner and the uniformity of the carcass joint are not solved well. The vulcanization process cannot completely solve the vulcanization degree. uniform problem

Method used

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  • Production process of radial tire
  • Production process of radial tire
  • Production process of radial tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one: technical process such as figure 1 As shown, the tire structure is as figure 2 Shown:

[0021] The internal mixing process uses a 420-type internal mixer. The raw materials are mixed and processed in the internal mixer. When the rubber material is mixed to 140 ° C, the speed of the internal mixer is reduced to 20 rpm, so that the rubber material is at 140 ° C to Keep at 160°C for 70 seconds, during which the feeding door is opened for 15 seconds, and the generated water vapor is discharged out of the internal mixer to obtain a uniformly mixed compound.

[0022] Adopt conventional methods in this field to produce all the semi-finished rubber parts that make up the tire, including the carcass 10, the belt layer 3, the inner liner 12, the rubber parts used in different parts of the tire and the bead attached with the apex rubber, which are produced by VMI company The calendering and cutting joint integrated equipment preheats the steel cord drawn from th...

Embodiment 2

[0027] Embodiment 2: The process steps are basically the same as in Example 1. The difference is that in the banburying process, when the rubber material is mixed to 145°C, the speed of the internal mixer is reduced to 20 rpm, so that the rubber material is mixed at 145°C to 158°C. Keep between ℃ for 80 seconds, during which the feeding door is opened for 20 seconds, and the generated water vapor is discharged from the internal mixer. In the vulcanization process, pass superheated water into the vulcanizer capsule, so that the temperature inside the capsule is 148°C, control the pressure inside the capsule to 3.0MPa, control the temperature inside the outer mold of the capsule to 138°C, and the entire vulcanization time is 800 minutes . The physical performance data of the product was tested by conventional methods in the art, and the results are shown in Table 2.

Embodiment 3

[0028] Embodiment 3: The process steps are basically the same as in Example 1. The difference is that in the banburying process, when the rubber material is mixed to 160 ° C, the speed of the internal mixer is reduced to 20 rpm, so that the rubber material is mixed at 150 ° C to 160 ° C. Keep between ℃ for 90 seconds, during which the feeding door is opened for 25 seconds, and the generated water vapor is discharged from the internal mixer. In the vulcanization process, pass superheated water into the vulcanizer capsule, so that the temperature inside the capsule is 151°C, control the pressure inside the capsule to 3.1MPa, control the temperature inside the outer mold of the capsule to 140°C, and the entire vulcanization time is 800 minutes . The physical performance data of the product was tested by conventional methods in the art, and the results are shown in Table 3.

[0029] Table 4 shows the physical performance data of the products obtained by the traditional production...

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Abstract

The invention relates to a production process of a radial tire. And an internal mixing operation comprises the steps of: reducing the rotating speed of an internal mixer when a rubber compound is mixed to a temperature of 140-160DEG C, maintaining the rubber compound at a temperature ranging from 140DEG C to 160DEG C for 70-90 seconds, during which a feeding door is opened for 15-25 seconds to discharge water vapor from the internal mixer; during a molding operation, an inside liner and a carcass shape up in the first molding stage; and during a sulfuration operation, the internal pressure iscontrolled in a range of from 2.9MPa to 3.1MPa, the inner temperature is maintained in a range of from 145DEG C to 151 DEG C, and the outer temperature is maintained in a range of from 136DEG C to 140 DEG C. The process of the invention can ensure well mixed rubber compound, uniform steel cord, tight carcass joint and uniform sulfuration, and the product obtained has high physical properties. Therefore, the production process of the invention satisfies the production requirements of giant engineering machinery radial tires.

Description

technical field [0001] The invention relates to a tire production process, in particular to a production process of a giant engineering machinery radial tire. Background technique [0002] This year, with the development of infrastructure at home and abroad, the demand for mineral products has been increasing, which has driven the demand for mining machinery tires. The tire market has seen a situation where the supply of giant engineering radial tires above 49″ exceeds demand. This type of tire is mainly used for The transportation of various ores requires harsh conditions, poor road conditions, long transportation distances and fast speeds, and long continuous working hours. Therefore, tires must have low rolling resistance, low consumption, good braking and self-cleaning properties, and super Strong bearing capacity, long service life and high wear resistance. [0003] The traditional tire production process can no longer meet the above-mentioned high-performance tire man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/20B29B7/28B29C35/02
Inventor 原修杰许美华任开露丁玲
Owner 山东新豪克轮胎有限公司
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