Extruder common 11 kinds of faults and solutions |
發(fā)表時(shí)間：9/6/2017 11:49:28 AM 點(diǎn)擊：43 |
Extruder common fault about eleven kinds,the following details of the eleven kinds of failure under extreme exclusion method:
First, the main motor bearing temperature rise is too high:
1,the cause:
(1)bearing lubrication bad.
(2)bearing wear serious.
2,the cause:
(1)Check and add lubricant. Check the motor bearings and replace them if necessary.
Second,the head pressure instability:
1,the cause:
(1)The main motor speed is not uniform.
(2)feeding motor speed is not uniform, feed volume fluctuations.
2,treatment:
(1)Check the main motor control system and bearings.
(2)Check the feed system motor and control system.
Third,low lubrication oil pressure:
1,the cause:
(1)Lubricating oil system regulator pressure set value is too low.
(2)oil pump failure or suction pipe blockage.
2,treatment:
(1)Check and adjust the oil pressure regulator valve.
(2)check the pump, suction tube.
Fourth,the automatic network device is slow or not working
1,the cause:
(1)low pressure or low oil pressure.
(2)Cylinder (or hydraulic station) Leakage (or oil spill).
2,treatment:
(1)Check the power system of the screen change device.
(2)check the cylinder or hydraulic cylinder seal.
Fifth,the safety pin or safety is cut off
1,the cause:
(1)Extrusion system torque is too large
(2)The main motor is not connected with the input bearing
2, treatment:
(1) Check whether the extrusion system has metal and other objects into the jammed screw. At the beginning of the event, check whether the preheating temperature or temperature rise meets the requirements.
(2) adjust the main motor
Six, the sudden drop in extrusion:
1, the cause:
(1) failure of the feeding system or no hopper in the hopper.
(2) squeeze the system into the hard stuck the screw, so that the material can not pass.
2, treatment:
(1) Check the material level of the feeding system or hopper.
(2) Check the cleaning system.
Seven, the host current instability
1, the production reasons:
(1) feeding is not uniform.
(2) the main motor bearing damage or poor lubrication.
(3) a section of the heater failure, no heat.
(4) screw adjustment pad is wrong, or phase is not right, component interference.
2, treatment:
(1) check the feeder, troubleshooting.
(2) overhaul the main motor, if necessary, change the bearing.
(3) Check the heater is working properly, if necessary, replace the heater.
(4) Check the adjustment pad, pull out the screw to check whether the screw interference phenomenon.
Eight, the main motor can not start
1, the cause:
(1) the car is wrong.
(2) the main motor thread has a problem, fuse wire is burned.
(3) The interlocking device associated with the main motor functions
2, treatment:
(1) Check the program and re-drive in the correct drive sequence.
(2) Check the main motor circuit.
(3) Check whether the lubricating oil pump is activated and check the status of the interlock device associated with the main motor. The pump does not open and the motor can not be opened.
(4) inverter induction power is not finished, turn off the total power to wait 5 minutes after the start.
(5) Check if the emergency button is reset.
Nine, the nose is poor or blocked
1, the cause:
(1) a heater does not work, material plastic poor.
(2) the operating temperature is set low, or the molecular weight distribution of plastic is wide and unstable.
(3) There may be foreign matter that is not easy to melt.
2, treatment:
(1) Check the heater and replace if necessary.
(2) verify the set temperature, if necessary, negotiate with the craftsmen to improve the temperature set value.
(3) clean up the extrusion system and head.
10,the main power to start the current is too high
1, the cause:
(1)the heating time is insufficient and the torque is large.
(2) a section of the heater does not work.
2,treatment:
(1) When driving the hand wheel, if not easy, then extend the heating time or check the heat of each section is working properly.
Eleven, the main motor abnormal sound:
1,the cause:
(1) The main motor bearing is damaged.
(2)the main motor SCR rectifier line in a thyristor damage.
2, treatment:
(1)Replace the main motor bearings.
(2) check the SCR rectifier circuit, if necessary, replace the thyristor compo |
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