Open mixer is the abbreviation of open rubber mixing machine, in the plastic products factory, we are accustomed to call it two roller machine. Is the production of plastic products factory using a relatively early mixing of plastic equipment, in the rubber industry, the mixer is the main equipment. If the roller is in trouble, how should we deal with it? How to solve the problem quickly does not delay production period? Below we from the open mill roller several common shortcomings to analyze:
First, open the roller bearing parts overheating, temperature over 100 degrees C
Analysis：
1, the low temperature of the working face of roller, the feeding quantity is too large, a roller bearing load is too large, so that the lubricating oil film is damaged, the effect of load pressure bushing get sufficient lubrication bearing temperature due to heat and high temperature resistance. Should be intermittent feeding, the heating temperature of the roller surface to the skills to increase the temperature, and then reduce the amount of feed;
2, the oil input bearing pressure is low or the amount of oil into the oil is too small, it may be the oil pipeline blockage, parking should check the lubricating oil supply system;
3, bearing body cooling circulating water flow is not smooth or cooling water flow is small, should increase the cooling water flow or check dredge pipeline;
4, roller shaft neck bushing or serious wear, sliding surface rough, repair, parking should be polished two parts or sliding contact surface for bushing.
Two. The distance between the working surface of the roller can not be adjusted
Analysis：
1, roller working surface diameter of grinding gear ratio is too small, and there, should modify the tooth height;
2, bearing lining wear serious, too large diameter hole, should change the bearing lining.
Three, open mill roller pitch distance standard is not accurate
Analysis：
1, adjust the distance in the safety of the device gasket wear serious or damage, see repair or change the safety gasket;
2, adjust the distance screw or nut serious wear and tear, should be repaired to replace the serious wear parts.
Four, open the rotation of the rotary drum
Analysis：
1, the distance between the rollers of the two roller is too small, and the work of the roller is seriously overloaded;
2, roller working surface temperature is too low, should eliminate the roller surface of the material, to the roller continue to heat up, the temperature of the temperature and then request the production of material;
3, a feeding amount is too large, should be appropriate to reduce the amount of material;
4, lubricating oil roller bearing parts, shaft and bearing axle; parking pressure unload bearing body, repair grinding shaft neck and bushing.
7, it is assumed that there is no drying equipment, found that the powder mixture can not be used as a case.