Solutions to common faults of plastic processing equipment

During the use of plastic processing equipment, it is inevitable that there will be faults. As long as we can deal with the faults calmly and find appropriate solutions, it will not aggravate the severity of the faults. In addition to accurately analyzing the problems, the more important thing is whether to deal with them at will, which will seriously affect the progress of dealing with the faults of plastic processing equipment, It brings trouble to completely solve the fault.

★ main motor system fault:

The torque of main motor of plastic processing equipment is too high or too low, the speed of main motor is too low, the bearing temperature of main motor is too high, the winding temperature of main motor is too high, the inlet and outlet temperature of water-cooled cooler of main motor is too high, the outlet flow of lubricating oil pump of main motor bearing is too low, the outlet pressure of lubricating oil pump of main motor bearing is too low, and the water leakage of water-cooled cooler of main motor is too high.

★ transmission system fault:

The position of gearbox shift lever deviates, the instrument air pressure of friction clutch is too high, the speed difference of friction clutch is too large, the outlet pressure of gearbox lubricating oil pump is too low, the outlet oil temperature of gearbox lubricating oil pump is too high, internal fault of friction clutch, etc.

★ failure of screw process section of plastic processing equipment:

The melt pressure before and after the throttle valve is too high, the melt pressure at the head is too high, the melt pressure difference before and after the screen changer is too large, and the start-up valve fails to rotate.

★ fault of underwater processing system:

The motor winding temperature of the plastic processing equipment is too high, the rotating speed of the pelletizer is too low, the torque of the plastic processing equipment is too high, the automatic switching failure of the particle water bypass, the equipment water pressure is too high or too low, the equipment water flow is too low, the clamping bolts of the plastic processing equipment are not tightened, the bypass water valve is not closed, and the hydraulic clamping pressure of the equipment is too low.

★ motor failure, low axial feed pressure of hydraulic cutter of plastic processing equipment, high melt pressure, etc

Cause analysis: high mesh number of filter screen, low melt index of polypropylene powder and large feeding volume, incomplete melting of materials due to low barrel temperature in each section, low opening rate of template and blocked extrusion of materials at the head can lead to high melt pressure.

That’s all for the common faults of plastic processing equipment. I suggest you read this article carefully, which will help you. Secondly, you should maintain and maintain the equipment regularly, so as to reduce the generation of faults. You might as well try it.