Main structure of three roll calender for calendering products

The three roll calender is mainly composed of base, frame, roller device, transmission device, electric gap adjusting device, electric cabinet, electric grease pump lubrication device and other main parts. The roller arrangement is in vertical (horizontal) state. The base and frame are welded with high-quality structural steel and have enough mechanical strength after welding stress relief treatment.

The material of the calender roller is chilled cast iron, the surface has high hardness and wear resistance. The upper roll (or operating surface) is the moving roll, and the lower roll (sheet output direction) is the fixed roll. The bearing seat adopts the built-in bearing device to improve the calendering accuracy. The transmission device is the hard tooth surface reducer driven by frequency conversion motor through the coupling, and the reducer output shaft drives the fixed roller to work through   coupling. The fixed roller drives the movable roller to work through herringbone gear, and the rotation speed of the roller is within the range of linear speed, which can be adjusted by frequency converter according to the production process needs. The gap adjusting device is both ends of the moving roller is installed with one set of electric gap adjusting device. The gap adjusting device is composed of motor, cycloid pin wheel reducer, worm gear pair and screw nut pair. The roller can move at one end or both ends simultaneously in the sliding groove of the frame to achieve the purpose of adjusting the gap between the rollers.

The calender adopts the displacement sensors   which are installed on both ends of the roller, and the distance between the two rollers can be clearly seen through the digital display meter. The electric grease pump adopts the microcomputer timing and quantitative automatic lubrication system, which mainly meets the lubrication requirements of each lubrication point of the calender, so as to ensure the orderly work of the calender equipment.