Four roll calender
Four roll calender
Four roll calender
Four roll calender
Four roll calender
Four roll calender
Four roll calender
Four roll calender

Four roll calender

The four roll calender is mainly used for sticking and wiping glue on calendered films and textiles.

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The four roll calender is mainly used for sticking and wiping glue on calendered films and textiles.

 

characteristic:

Rubber calender is mainly composed of roller, roller bearing, roller distance adjusting device, frame, roller temperature adjusting device, lubrication system, axle crossing, preload, transmission system and control system.

 

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Roller is the main part of calendering machine, and it is also the key part to determine the quality and output of calendering products. Roller is a part that directly completes calendered products, which directly affects the accuracy, quality and productivity of calendered products. The working surface of the roller has high wear resistance and good finish; The roller body has enough strength and rigidity, good thermal conductivity.

 

1. Roller material

Calender roller material generally uses the surface hardness is high, add rare metal alloy chromium, molybdenum or nickel alloy cold hard cast iron roller.

 

As the calendering process is more strict than the rubber mixing process, there are the following special requirements for the roller cylinder:

(1) The surface of the roller should be finished by grinding;

(2) The wall thickness of the working part of the roller should be uniform to avoid uneven heat transfer;

(3) The roller has enough rigidity and dimensional accuracy, and the deformation should be small;

 

2. Roller structure and dimensions

There are two types of calender roller structure, namely hollow roller and drilling roller. Due to the special characteristics of drilling roller, drilling roller is used in high-precision calender.

 

The heating and cooling mode of drilling roller can be divided into single drilling and group drilling. The group drilling mode accelerates the flow speed of steam and cooling water and has good heat transfer effect. The characteristics of the drilling roller are as follows:

(1) The heat transfer area of the drilling roller is large;

(2) The wall thickness of the working part of the roller is uniform, so the heat transfer is uniform;

(3) The rigidity of the roller has been greatly improved due to its large cross-sectional area;

(4) The heat conduction of the roller is stable, the temperature of the roller surface is uniform, the temperature reaction is fast, and it is easy to realize the automatic control of the temperature.


Copyright:Henan JinXin 2021