New extruders are generally equipped with torque overload protection devices. A reliable and most effective way is to turn the coupling part by hand, left three times and right three times, when the temperature rises to the required temperature value before starting, and then start the machine smoothly. If you can't turn it smoothly, you just can't turn it on.

1. Stop normally. When the extruder is stopped without fault, it can be stopped in the following order: close the gate of the discharge port of the hopper; Adjust the speed of the feeder to zero, and press the stop switch button; Turn off the vacuum system, gradually reduce the screw speed (if it is necessary to replace the new material, the remaining material in the barrel should be exhausted as much as possible until the material is basically emptied), and after the main engine speed is adjusted to zero, press the main motor stop button; Cut off the multi-power switch on the host control cabinet and cut off the main power switch; Close all water inlet valves; Clean the machine.

2. Emergency stop. In case of emergency during the operation of twin-screw extrusion unit, the emergency stop button should be pressed immediately (or when the stop button of the faulty part is pressed, the main engine will usually be stopped); After an emergency stop, remember to immediately set the speed control knobs of the main motor and the feeding motor to zero, and shut down other auxiliary systems. After handling the fault, restart the car in the normal starting order.

3. Dismantling steps of aluminum extrusion press. Which is the same as that of a single screw extruder. If you stop after extruding heat-sensitive materials such as PVC or POM, you usually need to use polyolefin plastic to squeeze the materials in the barrel to prevent the materials from overheating and decomposition due to too long heating time before starting the next car. If necessary, dismantle the car and clean it up.

When disassembling the car, loosen the flange of the head, remove the filter plate and screen, then start the screw to run, pull out the screw while it is hot, and then quickly clean up the residual materials in the head, screw and barrel with copper bars and shovels. After cleaning, the parts should be put back in place in time. If they are stored, they should be coated with a little antirust oil. When the screw is placed, it should be hung.

Note: Never start a cold car or start a cold car, because at that time, the aluminum profile extruder was not "hot through" (that is, the plastic in the extruder barrel had not completely reached the specified temperature, and the melt viscosity of the plastic was very high). At this time, starting a car, especially the old extruder, might break the screw.

If you are looking for extruder products, or want to know some knowledge about extruder products, you can contact Wohe Hardware Machinery Co., Ltd., our company has a group of high-quality technicians and professional staff, and sincerely serve you!