New compound rubber processing technology

Abstract

Disclosed is a novel rubber compound processing technology. After an upper associated machine controls an internal mixer to mix rubber materials, carbon black and compounding ingredients, unloading is carried out, and rubber materials are unloaded to a cooling open mixing machine through a buffer hopper. After being subjected to rubber overturning cooling through the clamping function of a rubber overturning belt of the open mixing machine, the rubber materials are discharged and distributed to a mixing open mixing machine through a conveying belt conveyer to be subjected to rubber overturning and pouring. After supplementary mixing, the rubber materials are discharged. An automatic rubber sheet bundling device is installed at the back of an outlet rubber belt conveyer of the mixing open mixing machine, and rubber sheets are automatically bundled, then are conveyed to a belt type rubber bundle weighing device through a belt conveyer, then are conveyed to a tablet compressing machine to be subjected to tablet compressing, enter a low-temperature rubber filter to be subjected to rubber filtering and purification, and enter a rubber cooling device in a tablet form to be subjected to cooling and rubber collection. If the rubber sheets are not filtered, the rubber sheets can directly enter the rubber cooling device by selectively omitting the rubber filter, and the rubber cooling process is started. The novel rubber compound processing technology has the advantages of being efficient, saving energy, achieving automation of a single thread, and improving the performance and yield of the rubber materials and rubber components in the later procedures.

Description

technical field [0001] The invention relates to the field of rubber tire preparation, in particular to rubber mixing equipment and processing technology. Background technique [0002] As we all know, the first process of tire manufacturing is rubber mixing. The basic method is to put rubber, carbon black, compounding agents and other materials into the rubber mixing machine (divided into two types: internal mixer and open mixer) according to the formula requirements. Mixing and shearing are carried out in the medium, and finally a homogeneous rubber compound is obtained, which is used for the manufacture of various rubber parts in the next process. The traditional rubber mixing technology is a multi-thread high-temperature rubber mixing technology, which has been widely used since the 1990s. Characterized by the repeated high-temperature mixing of high-speed and large-capacity internal mixers (above 270L), the process and equipment of traditional rubber mixing technology con...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the first process of tire manufacturing is rubber mixing. The basic method is to put rubber, carbon black, compounding agents and other materials into the rubber mixing machine (divided into two types: internal mixer and open mixer) according to the formula requirements. Mixing and shearing are carried out in the medium, and finally a homogeneous rubber compound is obtained, which is used for the manufacture of various rubber parts in the next process. The traditional rubber mixing technology is a multi-thread high-temperature rubber mixing technology, which has been widely used since the 1990s. Characterized by the repeated high-temperature mixing of high-speed and large-capacity internal mixers (above 270L), the process and equipment of traditional rubber mixing technology constitute a total of three stages: the first stage is the master batch, and the internal mixer is used for raw rubber and When the compounding agent is mixed and plasticized, the temperature of the rubber material will quickly rise to 160°C in the first half of the entire rubber mixing cycle, and it will be kept at this temperature for mixing in the second half. At this temperature, the rubber molecular chain will undergo oxidative cracking, and various The compounding agent will also become unstable, which will have an adverse effect on the quality of the mixed rubber. In order to prevent continuous heating and cracking, the rubber material will be discharged from the internal mixer and pressed into tablets to cool and park; the second stage is also a master batch, and the basic Similarly, the third stage is the final refining, where vulcanization aids will be added and mixed at a lower speed of the internal mixer. In order to prevent the occurrence of scorch, this stage will be processed at a temperature below 105°C. Once the temperature is over, discharge is required. The above three stages generally have a cycle of about 3 minutes, and the overall processing time is about 9 minutes. Through years of use, traditional processes and equipment have exposed many shortcomings. To make up for these shortcomings becomes a new technology breakthrough. The problems that need to be solved are concentrated in: high temperature problem: repeated long-term high temperature of 160 ℃ denatures the rubber material and affects the quality; multi-thread problem: repeated multi-stage heating and cooling, resulting in a great waste of energy, an increase in the number of equipment and labor, Occupying a larger building area and increasing the burden of logistics, inspection and management; automation problems: the mill is manually operated, which is labor-intensive and dangerous, and human factors have a great impact on quality stability; uniformity problems: due to High-temperature processing and manual operation problems lead to insufficient mixing of rubber materials and insufficient uniformity; check problem: there is no weight check of each rubber material in each section of rubber mixing, and it is impossible to know the accuracy of the formula. There are hidden dangers in the quality of the raw materials; the problem of impurities: due to the environmental reasons of the raw materials and the processing process, there are various impurities in the rubber materials, which cannot be removed during the entire rubber mixing process, which affects the quality of the rubber materials