PE wood plastic composite material extrusion production line operating procedures

PE Wood Plastic Composite Extrusion Production Line Operating Procedures

Extruder:

1- Check the feeder and hopper. Make sure there are no impurities in the hopper.

2- Check all screws are in good condition.

3- Check whether the vacuum equipment of the extruder is unobstructed, and ensure that the vacuum degree is not less than -0.08mpa. The vacuum barrel should be cleaned twice per shift. Do not use metal tools to clean the vents, and use plastic or wooden sticks to clean impurities in the barrel vents.

Auxiliary equipment:

1- Check whether the cooling water system is unobstructed.

2- Check the cutting machine. Make sure there is nothing blocking the cutting saw.

3- Make sure all electrical components are in good condition.

Mold installation:

1- Make sure the mold is installed horizontally and tighten the bolts.

2- Ensure the strength of each bolt and the gap between the extruder flange and the mold flange is equal.

3- Fasten the heater and thermocouple to the mold in turn. The heater must be pressed tightly against the mold surface.

Installation of the shaping mold and water tank:

1) The shaping mold must be installed horizontally on the shaping table to ensure that the shaping mold and the die head are horizontal left and right, up and down.

2) The cooling water pipes are connected to the shaping mold in order. And make sure that the joints are leak-proof.

Start the machine:

1. Turn on the switch of the feeder to feed, set the interval time (set according to the approximate production speed, generally 10 minutes), fill the hopper before starting the main machine, turn off the feeder, and then turn it on when the main machine starts.

2. Set the heating temperature of the barrel and mold. Generally, the step is to set it to 120 degrees, keep it warm for half an hour, and then set it to the start-up temperature. After the start-up temperature is reached, keep it warm for another half an hour before starting the machine.

3. Start the machine. At the beginning, closely monitor the main machine's current and pressure. Usually, the feeding speed is 3 turns, the main machine speed is 5 turns, and the 65 main machine current must not exceed 55A. Usually, 40 to 50 is the suitable. The 80 main machine current must not exceed 90A, and 60 to 70 is suitable.
4. When the material is observed from the exhaust port of the main machine, the vacuum exhaust device can be turned on, and the feeding amount of the feeder can be adjusted at the same time so that a "material plug" is quickly formed inside the main machine screw to achieve a vacuum degree of -0.08Mpa. And switch and clean it in time.
5. Automatic cutting of profiles:
The cutting length and pushing length of the profile are set by forming a switch. When the profile reaches the set value, the cutting saw automatically cuts, and the flip rack automatically pushes the material to the rack.
(III) Shutdown procedure:
1. First turn off the feeding; and lower the speed of the main machine, and turn off the vacuum pump at the same time.
2. When it is observed that the amount of material extruded from the mold is significantly reduced, turn off the heating device of the barrel and the mold, and when the product is no longer extruded, adjust the screw speed to zero and turn off the main machine.
3. Turn off the water pump of the sizing table and the submersible pump in the pool.

4. Clean the ground around the main machine, auxiliary machine, and production line to keep the extruder and production line clean.

Wood-plastic mixer operation procedures

1. Weigh the raw materials strictly according to the formula sheet;

2. Mix the wood powder and additives to 100 degrees and then add plastic and crushed materials;

3. When starting the machine, run it at low speed for 1-2 minutes before running it at high speed;

4. After all the materials are added and mixed to 105 degrees, they can be discharged;

5. After the materials in the mixing pot are drained, close the discharge port before loading the next pot;

6. Clean the mixer and the surrounding area once every shift to ensure cleanliness, especially hygiene in the mixer control cabinet. Use an air pipe to blow away the dust in the control cabinet every shift.

7. Close the high-mix discharge port before each mixing.

Wood pelletizing machine operation procedures

1. Set the temperature of the barrel, mold, and screw. Before starting the extruder, it is necessary to preheat in steps. The barrel should be heated to 170 degrees first, kept warm for half an hour, and then heated to the set temperature before starting;

2. Check whether the fan can operate normally before starting; check whether the feeding pipe and the lower barrel are unobstructed;

3. When starting the machine, turn on the cooling fan first, and start at a low speed (the main engine speed is 150-200 rpm) until the pellets are stable after the extruder head can be accelerated. When the main engine is running, clean the exhaust hole at any time to avoid blockage and ensure smooth exhaust. Be careful not to poke the exhaust hole with a metal rod or stick but with a plastic tube or a wooden stick;

4. Observe the uniformity of the pellets and the discharge of the head at any time, always ensure the cleanliness of the outside of the pelletizer barrel, and avoid the combustion of dust caused by the heating ring.

5. When shutting down, turn off the feeder, then turn off the feeding motor, reduce the main engine speed, and turn off the main engine when there is no material discharge.

6. Clean the granulator, control cabinet, and surrounding areas once every shift to ensure cleanliness.