The latest environmentally friendly rubber kneading machine has a mixing chamber of 55L

Product Introduction:

Rubber kneader (also known as internal mixer) is a machine used for rubber plasticization and mixing. It is mainly composed of internal mixing chamber, rotor, rotor sealing device, feeding and pressing device, unloading device, transmission device and machine base. The following is a detailed introduction:

- Working principle: When the rubber kneading machine is working, the two relatively rotating rotors clamp the material from the feeding port and bring it into the roller gap. The material is squeezed and sheared by the rotor. After passing through the roller gap, it hits the sharp edge of the lower top bolt and is divided into two parts. They return to the top of the roller gap along the gap between the front and rear chamber walls and the rotor. During the cycle of flowing around the rotor, the material is sheared and rubbed everywhere, causing the temperature of the rubber to rise sharply, the viscosity to decrease, and the wettability of the rubber on the surface of the compound to be increased, so that the rubber and the surface of the compound are fully in contact. The compounding agent lumps pass through the gap between the rotors, the gap between the rotor and the upper and lower top bolts, and the inner wall of the internal mixing chamber together with the rubber, and are sheared and broken. They are surrounded by the stretched and deformed rubber and stabilized in a broken state. At the same time, the ridges on the rotor make the rubber material move along the axial direction of the rotor, which plays a stirring and mixing role, so that the compounding agent is evenly mixed in the rubber material.
- Main components:

- Mixing chamber: It is the main place for rubber plasticization and mixing, and there is a certain space inside for materials to be mixed, sheared, etc.

- Rotor: There are spiral ridges on the surface of the rotor, and the number of them is two, four, six, etc. The cross-sectional geometric shapes are triangular, cylindrical or elliptical, and are divided into tangential and meshing types. The shape and structural design of the rotor directly affect the shearing, extrusion and mixing effects of the material.

- Rotor sealing device: Prevents the material from leaking from the gap between the rotor and the mixing chamber during the mixing process, ensures the sealing of the mixing chamber, and ensures the smooth progress of the rubber mixing process and the quality of the rubber mixing.

- Feeding and pressing device: The feeding device is used to add rubber raw materials and various compounding agents into the mixing chamber. The pressing device usually adopts the form of a pressure weight, etc., which applies a certain pressure to the material during the mixing process to promote better mixing and kneading of the material, prevent the material from being thrown into the upper space of the mixing chamber when the rotor rotates, and ensure that the material can be fully affected by the rotor.

- Discharging device: After the rubber mixing is completed, the mixed rubber material is discharged from the mixing chamber. Common methods include flip-type unloading, so that the rubber material can be quickly and cleanly discharged for the next processing or treatment.

- Transmission device: used to transmit power and drive the rotor to rotate at a certain speed. It is usually composed of a motor, a reducer, a coupling, etc., to provide the required power for the rotation of the rotor and ensure that the rotor can work according to the speed and torque required by the process.

- Type:
- Pressure kneading machine (tumble mixer): used for plasticating and mixing rubber and plastics, and also suitable for mixing and kneading viscous materials. Its features include an elliptical shear type rotor, wear-resistant hard alloy cladding on the rotor working surface, hard chrome plating on the inner surface of the mixing chamber and the upper top bolt working surface, corrosion resistance, wear resistance, and long service life; the rotor, mixing chamber and upper top bolt all adopt a circulation channel structure to realize the circulation of heat transfer medium, and the material can be heated and cooled by steam or cooling water; the upper top bolt can exert pressure on the material through the cylinder to force the material to mix evenly and improve production efficiency; the rotor is supported by rolling bearings, which is easy to maintain and has a long service life; the transmission device adopts ngw planetary reducer, which has a compact structure, high transmission efficiency, low noise and long service life; for post-feeding, the mixing chamber is turned over to unload, which is convenient for cleaning materials and changing colors; the electrical control system adopts conventional electrical appliances, and can be equipped with PC programmable controller control according to user requirements.
- Open kneading machine: mainly used for kneading and refining of recycled rubber. The roller is made of alloy chilled cast iron, with a hard and wear-resistant surface. The front and rear rollers are smooth rollers, and the inner cavity is processed to make the roller surface temperature uniform; the reducer adopts ngw hard tooth surface planetary gear reducer, and the machine is equipped with an overload protection device to protect the main parts from damage due to overload; the machine is equipped with an emergency brake. When an emergency occurs, pull the pull rod and the machine will brake immediately, which is safe and reliable; the roller spacing is adjusted manually, which is easy to operate; the machine is equipped with a scraper and a winding device to remove the material from the roll.

- Advantages:
- High mixing efficiency: Compared with traditional open mills, rubber kneading mills can complete the plasticizing and mixing process of rubber in a shorter time, greatly improving production efficiency.
- Good mixing effect: The special structure and relative rotational motion of the rotor enable the rubber and the compounding agent to fully contact, mix and disperse, and the quality of the mixed rubber is more uniform and the performance is more stable.
- Convenient operation: The degree of automation is relatively high, and the operator only needs to add materials and control process parameters according to the prescribed procedures, which reduces labor intensity.
- Good working environment: Working in a closed environment can effectively reduce dust flying and loss of compounding agents, improve the working environment, and reduce the impact on the health of operators.
- Scope of application: Widely used in the rubber products industry, such as tires, hoses, rubber seals, rubber shock-absorbing products, etc., for plasticizing and mixing rubber to obtain rubber materials that meet the performance requirements of different products.

​Product Parameters: