Themain working parts are two hollow or drilled rollers that rotate in oppositedirections. This device is called the front roller on the operator's side. Itcan be moved back and forth by manual or electric movement. To adjust therolling distance and adapt to the operating requirements. The rear roller isfixed and cannot be moved forward or backward. The two rolls are usually the samesize, and they rotate at different speeds. As the rollers rotate, the gapbetween the two rollers is pulled apart. The original glue or glue material is stronglysheared and achieves the purpose of mixing. The plant is also used in plasticsprocessing and other sectors.

Inplastic products factories, it is also called a two roll mill. Blender is a kindof mixed plastic equipment. Earlier applications in the production of plasticproducts. In the production line of the calender, the function of the mixerbefore and after the calender is to mix the raw materials uniformly for mixingand plasticizing. This provides a more uniform molten material for thecalendered plastic products of the calender. 

In theproduction of cable materials, the opening and refining functions directly mixthe powdery material mixed according to the formula into a molten material. Itis then pressed into flakes to cut the granulator into granules. On the floorleather production line, you can directly provide a leather mixed plasticizeduniform primer. You can also recycle used plastic films (sheets) and re-refinethem in a mill.

What is the structure and classification of the two roll mill?

Refining,crushing, cleaning and pressing of raw rubber;

Removeimpurities from mixed, pressed and glued materials;

Heatrefining and supply of mixed rubber;

Crush,mix and press recycled rubber.

Maincomposition of two-roll mill

1.Roller

2.Bearing

3.Rack

Gland

5.Driving device

6.Distance adjustment device

7.Lubrication system

8.Temperature regulating device and emergency braking device.

Despitethe different mill sizes. But the basic structure is similar. In the rubberrefining process, the rolling mill mainly relies on two relatively rotatingrollers to squeeze and shear the rubber. After multiple kneading and chemicaleffects accompanying the kneading process. The macromolecular chain inside therubber is broken, and the various components inside the rubber are evenly mixed.Finally, the purpose of rubber refining was achieved. Due to the difference insurface speed and temperature between the two rolls. The film removed from theroll gap is coated on one roll and then returned to the other two rolls. Therefining of the rubber is repeated in this manner. During the plasticizingprocess, the molecular chain of rubber changes from long to short. Theelasticity is from large to small; during the mixing process, the surface ofeach component of the adhesive is continuously updated and uniformly mixed. Inthe batch operation of the mixer, the rubber material is repeatedly fed severaltimes, and finally the lower portion is cut off.

Theextrusion effect is due to the rubber material passing through the decreasingroller pitch. As lateral pressure increases and squeezes out

Thepressure increases; the shearing effect is due to the speed ratio of the frontand rear rollers, the greater the shearing force.

Mixerspecifications with "Working Roller Parts x Roller Diameter Cross SectionLength", such as Φ550 x 1500 in mm.

Partof the Chinese standard is the diameter of the drum. The Chinese phoneticsymbol previously used to indicate the number of machines used

Thetechnical characteristics of the machine should include:

1.Drumspeed

2.Speed ​​ratio

3.Power

4.Mixed amount

5.Adjustable range of roller distance

6.External installation dimensions and transmission methods.

Themain components of the rolling mill include: rollers, roller bearings, distanceadjustment devices, stands, safety brakes and rubber plates.

1.3Development history of two high rolling mill

The two-roll mill is the earliest used rubber machine in the rubber industry with asimple structure and the most basic rubber machine.

Asearly as 1820, it was a manually driven single roller groove rubber refiner.The double-roll rubber mixer was used for rubber processing in 1826 and has ahistory of more than 180 years. China began designing and manufacturing largedrilling machines in 1955. In the past 50 years, the design and manufacturinglevel of the factory has been greatly improved. In recent years, domestic newstructure mixers have continuously appeared. Strongly promoted the developmentof drilling machines. So far, domestic factories have become a series. Andcompleted some specifications design work, and has been exported abroad.

Withthe continuous development of the rubber industry, open factories are graduallyimproving and updating. Due to the application and development of extruder,mixer, continuous mixer and other equipment. In the water mixing automaticproduction line, the application range of the mixer is greatly reduced. However,it is still widely used in small and medium-sized plants. Especially in smallbatch production of recycled rubber and special rubber types and rubbermaterials.

Foreignersbelieve that the mill cannot be switched on. The mill just makes the glue closeto completion, and it is better to continue to finish it by turning on themachine afterwards.