65 Conical twin screw extruder process and operation regulations65 Conical twin screw extruder process and operation regulations
1. Temperature setting: According to the company's original material characteristics, the starting temperature is generally set in PVC material (165-185℃), PE material (170±3℃).
2. Confluence core: set at 165-160℃.
3. Mold: set at 180-195℃.
4. The normal production current of the host motor should be ≤50A, and the feeding motor should be ≤2A. The host current is between 70-80% of the maximum rated current.
5. The startup speed of the extruder is 5-20r/min
5.2.1 After heating to the set temperature, keep the temperature for half an hour, check whether each given potentiometer is zero, check whether the temperature of each section is normal, then press the start button of the host, and then slowly adjust to the startup speed of about 5-20r/min At the same time, when feeding slowly, you must be careful when adjusting the feeding knob. The current of the host should not be too large, causing excessive load. The current of the host is normally controlled within 35-40A. After the material comes out of the die, the host and the feeder The material is slowly raised to the normal standard production process value, and then check whether the temperature and current are normal.If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.
5.2.2 After debugging the export molding material to achieve the desired effect, pass it through the shaping die → water tank cooling → tractor → cutting machine, and then adjust the size and length of the product according to the provisions of the production instructions.
5.3 Matters needing attention in normal operation
5.3.1 Temperature and other parameter instruments.
5.3.2 Is the current of the host machine stable?
5.3.3 Barrel or trolley breaks.
5.3.4 Barrel or mold feed.
5.3.5 Cooling water supply
5.3.6 Is the traction and cutting normal?
5.4.1 Stop feeding, first reduce the speed of the feeding motor and then wait for the feeding motor to stop. Then add an appropriate amount of parking material from the parking hopper to protect the screw, barrel, etc. after the shutdown material outlet mold in the screw barrel, reduce the speed of the forced feeding motor, after the fixed speed knob returns to zero, press the stop button to reduce the speed of the main machine, adjust the speed After the knob returns to zero, press the stop button, the main unit stops, turn off the temperature control of the machine head, and finally turn off the main switch to clean the machine.