Kunshan manufacturer rubber machinery supplies 35L55L75L110L pressurized internal mixer

Internal mixer, also known as kneader, is mainly used for plasticizing and kneading of rubber
. An internal mixer is a machine equipped with a pair of relatively rotating rotors of a specific shape, which can intermittently mold and knead polymer materials in a closed state with adjustable temperature and pressure. It is mainly composed of an internal mixing chamber, a rotor and a rotor. , rotor sealing device, feeding and pressing device, unloading device, transmission device and machine base. Internal mixer is referred to as Lina mixer, and its full name is closed rubber mixing machine. It was developed on the basis of open mixer. After the invention of the open mill in 2000, the rubber industry underwent a fundamental change. However, due to the many shortcomings of the open mill, such as high labor intensity, low efficiency, large dust, etc., which seriously affected people's health, people began to consider whether This processing equipment is covered with a cover and gradually develops into an internal mixer. Because it works inside the refining chamber, it is called a closed type. Since the open mill works in the open, it is called an open rubber mixer. Generally speaking, it is believed that the internal mixer was invented in 1999. In fact, it was first designed by a commercial engineer (British) in West Germany based on the company's prototype machine. Due to its rapid development, large output and wide application , so people have always believed that the internal mixer was the first to come out.
Since the emergence of internal mixers, the mixing process has shown a series of advantages over open mixers, such as short mixing time, high production efficiency, easy operation, better ability to overcome dust flying, and reduce mixing to reduce the loss of chemicals, improve working conditions, reduce labor intensity, etc. Since it was developed based on experience to a large extent, there was a saying in the early stages of its development that the molding efficiency was low and it could not be used for molding, but this has been refuted by production practice. Therefore, the emergence of the internal mixer is an important achievement of rubber mixing machinery. It has still become a typical equipment in plasticizing and mixing, and is constantly being developed and improved. According to foreign statistics, some rubber compounds in the rubber industry are manufactured by internal mixers, and internal mixers are also widely used in the plastics and resin industries. Nowadays, due to the continuous improvement of the metal powder industry, some parts can also be mixed in an internal mixer.
One of the hallmarks of the development of modern internal mixers is high-speed, high-pressure and high-efficiency machines. Usually, those with a rotor speed of r are called low-speed internal mixers, those with a rotor speed of 3 to r are called medium-speed internal mixers, and those with a rotor speed of r or above are called high-speed internal mixers.
There have been internal mixers with speeds up to Refining machine. The operation time has been greatly shortened, from ～ for slow machines in the past to .
The structure of the internal mixer is also constantly developing. The working process of the internal mixer and the mechanization and automation level of the entire unit are also constantly improving, and program control is adopted. Nowadays, large-scale imported machines are all controlled by computers.
In short, this kind of development will greatly strengthen the mixing process, improve machine efficiency, reduce physical labor and improve the working environment.