PE Extrusion / Plastic Pipe Extruder Machine 380V Auto Temperature Control

Easy operation BLSJ-90*28:1 Single-screw insulation pipe production line extruder machine plastic extruder machine

Application&features
 
Application
BLSJ series single-screw extruders are developed for thermoplastic extrusion. Equipped with different dies and auxiliaries, BLSJ series extruder can produce pipe, rod, strip, film, wire, and bottle, etc.
Features

• The TYPEY series VFD motor is a kind of AC motor controlled by constant torque via SCR. It is featured by wide speed variation,low controlling power,performance of starting,large torque.
• High-hardness gear reducer with reliable drive,easy maintenance and long working time.
• Fine-designed screw for even products and high production,due to speeding material fusion and stable pressure.
• The KTV bush is helpful for conveying the solid material and stable extrusion.
• 2-channel automatic temperature controller with small temperature fluctuation for various plastics. The temperature of die,screw is also automatically controlled.
• Air cooler is connected to heating ring for better cooling effect

 
 
Parameter
 

 
 
Transport
 

• There are 4 davits on both sides of machines. Connect the davit by steel wire and balance the machine, and then lift the machine.
• The ring on gear reducer is forbidden to be hanged.
• Be careful of steel wire in the lifting. If possible, soft pad/cloth can be used to prevent the surface damage of machine.

 
Important components
 
Screw
Screw is the key parts for moving, mixing and compressing of plastic.
Screw is made of 38CrMoAlA,with high hardness,wearing,anticorrosion. Nitration depth 0.4-.7mm. Hardness of screw surface HV940.
Barrel
The barrel is designed to contact with plastic material and screw for friction.
Barrel material 38CrMoAlA, with high hardness,wearing, anticorrosion. Nitration depth 0.4-0.7mm. Hardness HV740.
Raw material is heated indirectly by heater.
Driven system
The screw is driven by motor through belt wheel, gear reducer for stable speed and wide variable speed range.
 
Maintenance

• Only professionals or trained workers are allowed to operate the machine.
• No load running is forbidden.
• Lubricating oil is necessary for the machine. For the gear box, it should be 40# lubricating oil. (For the first 7 days operating, the oil should be changed. In the following operating days, it should be change every half year).
• Check the tension status of drive belt regularly.
• Check the standard oil level of gear reducer regularly.
• Check the set screw status regularly. (The screw for fixing, no the screw&barrel)
• Check all gauges and indicators regularly.
• Check the spreader plate regularly.
• Clean screw&barrel following instructions

If the machine is planned to be moved or temporally unused, the plastic material in screw should be extruded out completed in low speed; Unload the die and splitter plate, then the screw can by pushed out by steel rod through the hole on gear reducer; sand paper strip is not allowed to clean the screw/barrel; after cleaned, the screw/barrel should be coated with oil.

• Hard particals, especially steel things, should not allow to be followed into material inlet.
• The usage and maintenance of gauges please see relative instructions.
• Check the thermocouple regularly, if damaged, change it please. If indicator of gauge is in full scale, contact status of wire should be check.

 
Trial run
 
Trial run should be operated by professional technicians.
 

• Before trial run, check the all lubricating points. Industrial paraffins sould be added for screw rotating.
• Start main motor and check the rotating direction of screw. (Faced to die, screw should be in clockwise direction). After 2-3mintes, check if there is abnormal noise from the driving system. Also, please check the tension status of belt.
• Required temperature should be kept for 30 minutes. In regular production, the remained material should be fused, but the temperature should be 20-30 degree below the decomposition temperature.
• After 30minutes heating, check all fixing screw of mould. Then start machine in low speed and add plastic material. Speed up to required rotation speed when the plastic comes out from mould.
• Stop machine

Electronic system instruction
 
Main motor
Power 37kw
 
Heating&cooling
Heating: There are heating rings inside the die and barrels. Temperature is automatically controlled.
Cooling: The heating will be stopped when temperature reaches preset valve. After 15s time relay, the material is cooled by air cooler, stopping at preset value for anther heating cycle.
Note: air cooling can be manual controlled by master switch and automatic controlled by preset max. /min. value.
 
Wire connection
Check wire connection in control cabinet
Check gauges whether there are damages or indicator slack
Turn on the power for trial run if wire connections are right.
 
Trouble shooting

• Main power cannot be start

Check power switch, fuse wire, auto air switch
If cabinet indicator is light, try the operation system. If the operating system is not working, check the electric lines of this system.

• VDF don not work

Check the VDF controller, if damaged or connected wrongly, change the VDF controller or correct the wire connection.
Temperature mistakes

• No current in heating cycle

If contactor can’t be closed, please check whether-the auto air switch is open, heating cycle is damaged.

• Temperature gauge in full scale

Test with a new gauge if the existing gauge is broken. If the existing gauge is well, check the thermocouple.

• Temperature indicating errors

Test with a new gauge if the existing gauge is broken. If the existing gauge is well, check the thermocouple.

• Rotating speed gauge mistakes

Speed indicating errors
Adjust potentiometer button on VFD control panel

• No indicating signal

Adjust feedback button on VFD control panel
Attentions

• Careful read this manual before operating machine.
• All operators should be trained and qualified for using this machine.
• Maintenance man should be professional.
• Check the compatibility of all auxiliaries. Power source should also be checked.
• Master power should be turn off before maintenance.
• In big errors or emergency, pressure emergency button and turn off master power.
• Non-worker should be far away from the working area.

Advantages:
1. good service
2. good extrusion ability
3. good product application
4. power saving
5. easy operation
Application:
1, pure water, drinking water pipeline;
2, industrial water and chemical transport, emissions;
3, domestic hot and cold water pipe system;
4, beverage, drug delivery systems of production;
5, compressed air pipe;
6, other industrial, agricultural management