What is the purpose and main equipment of tire rubber mixing?

The purpose and main equipment of tire rubber mixing are as follows:

1、 The purpose of tire rubber mixing

The purpose of tire rubber mixing is to evenly disperse various additives (such as vulcanizing agents, accelerators, anti-aging agents, fillers, plasticizers, etc.) in the raw rubber according to the specified mass ratio in the formula, in order to form a rubber compound with satisfactory performance. The quality of mixed rubber directly affects the performance of tire products, such as hardness, strength, wear resistance, heat resistance, etc. The degree of uniform dispersion of the compounding agent in the raw rubber is crucial during the mixing process. The more evenly dispersed it is, the higher the quality of the rubber material and the better the quality of the finished tire produced.

2、 The main equipment for tire rubber mixing

The main equipment for tire rubber mixing includes an internal mixer and an open mixer.

Internal mixer: The internal mixer is a key equipment for mixing tire rubber, mainly used to mix raw rubber with various additives. There are two relatively rotating rotors inside the mixer, which evenly disperse the compounding agent in the raw rubber through the shearing, squeezing, and friction effects of the rotors. The internal mixer has the advantages of high mixing efficiency, good mixing quality, and easy operation, and is the preferred equipment for tire rubber mixing.

Open mill: The open mill is mainly used for further processing and plasticizing the rubber material mixed by the internal mixer. The two rollers of the open mill rotate relative to each other at a certain speed ratio, rolling, thinning, and cutting the rubber material to further disperse the compounding agent and improve its plasticity. The open mill can also be used to prepare various semi-finished rubber components, such as treads, sidewalls, etc.

In addition, some auxiliary equipment is required during the tire rubber mixing process, such as small material automatic weighing system, screw extruder, etc., to ensure the accuracy and efficiency of the mixing process.

In summary, the purpose of tire rubber mixing is to prepare a rubber compound with satisfactory performance, and the internal mixer and open mixer are the main equipment to achieve this goal. The quality of the mixed rubber has a significant impact on the performance of the finished tire during the tire production process.