A small open mill is a type of open rubber mixing or plasticizing machine, mainly used for mixing, plasticizing and other processing of materials such as rubber and plastic.

Here is a detailed introduction about it:

-Usage: Mainly used for tablet color matching or testing in the rubber or plastic industry, and can also be used for preparing plastic rubber compounds, mixed rubber compounds, or conducting hot refining. It can mix different colors of plastic, color powder, rubber, etc. through heating and mixing rollers to produce smooth, uniform thickness samples.

-Main structure: It is usually composed of a base, a drum upper seat, a loading and receiving basin table, and a cover to form a desktop structure. Its key components include rollers, roller distance adjustment devices, emergency stop braking devices, heating devices, and electronic control systems.

-Working principle: The main working components are two hollow rollers or drilling rollers that rotate inward in opposite directions. The front roller of the device on the operator's side can be manually or electrically adjusted for front and rear positions, while the rear roller remains fixed. Two rollers rotate relative to each other at different speeds, and raw rubber or rubber material is sucked into the gap between the two rollers as the rollers rotate, and is subjected to strong shear to achieve the purpose of plasticizing or mixing.

-Technical parameters: Taking OLT-120DR two roll mill as an example, its mixed loading capacity is 0.1-1.8KG, roller diameter is 120mm, roller working surface length is 350mm, roller adjustment distance is 0.1-6mm, heating method is electric heating, roller temperature is normal temperature -300 ℃, roller speed is about 19 revolutions per minute.

-Safety device: Small open mills are usually equipped with emergency stop buttons in collision mode. When encountering danger, pressing the button can immediately stop the operation, ensuring the safety of operators.