Control System of the Plastic Pelletizing Machine

The main advantage of the plastic pelletizing machine is that it not only changes the traditional principle of heating and drawing granulation. It combines plastic film, silk, tape, sheets, soft plastic tubes, foam, and biodegradable materials. And other waste materials. the plastic pelletizing machine also allows these waste materials to be processed. It makes the material into granules and reproduces them.

Here is the content:

• Screw speed

• Control of the outer diameter

Screw speed

The control of screw speed the adjustment and stabilization of screw speed is one of the important process requirements of the host drive. Screw speed directly determines the amount of rubber and extrusion speed. The normal plastic pelletizing machine always wants to achieve the highest possible speed and achieve high production. The extruder requires screw speed from the start to the required working speed, and the available speed range is large.

And high requirements for speed stability, because fluctuations in speed will lead to fluctuations in the amount of extrusion, affecting the quality of extrusion. So, there is no change in the traction line speed, it will cause changes in the outside diameter of the cable. Similarly, such as traction device line speed fluctuations will also cause changes in the outer diameter of the cable and the screw. And traction line speed can be reflected by the corresponding instrumentation on the operating table. And plastic pelletizing machines should be closely observed to ensure high quality and high yield.

Control of the outer diameter

Outside diameter control as described above to ensure the size of the plastic pelletizing machine cable outside diameter. In addition to the requirements of the control core (cable core) size tolerance, extrusion temperature, screw speed, traction device line speed, etc. should be controlled to ensure that the measurement of the outside diameter control is a comprehensive reflection of the accuracy and level of control. The extrusion unit equipment, especially the high-speed extrusion line should be equipped with an online outside diameter detector. At any time detect the cable outside diameter, and will exceed the signal feedback to adjust the traction or screw speed. Correct the outside diameter exceeding the difference.

Tension control of the winding requirements to ensure that the winding of different lines of the plastic pelletizing machine speeds. From empty to full plate work of constant tension requirements, hope that the winding device has a storage line tension adjustment mechanism, or in the electrical consideration of constant line speed system and constant tension system of winding, etc.

The electrical automation control of the whole machine is to realize the plastic pelletizing machine process control requirements of the high-speed extrusion line, mainly: start-up temperature interlock; working pressure protection and interlock; proportional synchronous control of extrusion and traction transmission of two major parts; synchronous control of winding and traction; online detection and feedback control of outer diameter. single machine and whole plastic pelletizing machine tracking control of components according to different needs.

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