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The Feed Rate Of The Plastic Pipe Production Line Determines The Output Of The Extruder

Qingdao Longchangjie Machine Co.,Ltd | Updated: Aug 03, 2017

The feed rate of the Plastic Pipe Production Line determines the output of the extruder
In the process of extrusion of the Plastic Pipe Production Line, the feed rate generally determines the yield of the extruder, because it is a hungry extrusion, and if the feed rate can not keep up, even if the speed of the Plastic Pipe Production Line is increased, Production still can not improve. In order to ensure the extrusion yield, the Plastic Pipe Production Line feeding device and the extruder screw speed is linked, that is, change the speed of twin screw, the feeding device can automatically track, and adjust the feeding speed, so that reached Feed volume with the twin screw speed changes automatically adjust. Then, when the twin screw speed increases, the feed rate can not be improved, the relevant reasons may have four aspects.
1, the barrel near the feed port cooling is not enough, so that the temperature near the feed port is too high, the material appears adhesion, the feed was blocked.
2, Plastic Pipe Production Line sections of the temperature control properly, barrel temperature is too low, the material is difficult to completely plastic, and thus more difficult to squeeze out.
3, nose flow channel, network equipment is blocked.
4, the structure of the twin screw design is not reasonable, too many meshing blocks, the original resistance set too much, so that the material forward resistance is too large.
For the above reasons, the relevant solutions are appropriate to improve the barrel temperature; to strengthen the feeding port near the cooling, to prevent the adhesion of materials; reduce the screw in the meshing block or resistance components; clean the nose flow channel replacement filter.
The extrusion volume of the Plastic Pipe Production Line is mainly adjusted by the feeder speed. How much material is fed to the feeder, how much material is squeezed out. The hopper of the single screw extruder is directly connected to the screw. Screw turn fast, of course, feeding fast. Bluntly, the twin screw is more than a single screw feed machine.
A certain speed, the cutting speed and yield is a relationship! The Cutting speed, speed constant. The internal melt pressure will increase, the speed will be faster! But under normal circumstances, the cutting speed increased, there may be material countercurrent phenomenon. And from the exhaust hole of the cylinder! So under normal circumstances. Or need to increase the host speed, to achieve coordination!
Plastic Pipe Production Line in the extrusion process, may encounter a variety of problems, to understand the reasons for the relevant problems can be resolved in a timely manner.
1, Plastic Pipe Production Line during the operation of low oil pressure
   The reason for the low lubricating oil pressure is mainly that the pressure setting of the lubricating oil system is too low or the pump is faulty and the suction pipe is blocked. After the problem occurs, just carefully check and adjust the oil pressure regulator valve; check the pump, suction pipe.
2, Plastic Pipe Production Line extrusion process head pressure instability
    The main causes of this problem include the uneven speed of the main motor or the uneven speed of the feed motor, causing the feed volume to fluctuate. The solution is to check the feed system motor and control system, followed by inspection of the main motor control system and bearings.
3, the main motor bearing temperature rise is too high
    Bearing lubrication and bearing wear are serious cause of the main motor bearing temperature rise is too high reasons, check and install the oil before the start, check the motor bearings, if necessary, replace the motor bearings.
4, Plastic Pipe Production Line issued an abnormal sound
    The main motor bearing damage, or the main motor SCR rectifier line in a thyristor damage, may lead to abnormal production line of plastic pipe, the solution is to replace the main motor bearings or replace the rectifier circuit damage to the thyristor components.