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Why is the screw of the plastic blow molding machine abnormal?

2022-06-15 Hits: 44 views

In the process of using the plastic blow molding machine, you have encountered the situation that the screw of the plastic blow molding machine cannot be discharged normally. Today, Bekwell will discuss with you why the screw of plastic blow molding machine is abnormal.

The screw discharge of plastic blow molding machine is abnormal, usually in the following ways:

•Slow discharge of screw
•The length of the screw discharge is different
•Before the screw is discharged, there is no twist
•The quality of screw discharge is not good

As for why these things happen? Why is the screw of the plastic blow molding machine abnormal? In the following content, Bekwell will give different reasons for different situations.

The screw discharge is slow and the screw discharge length is different.

The abnormal performance of the screw discharge of these two plastic blow molding machines can be attributed to one reason, that is, the discharge of the blow molding machine is unstable. What is the reason for the unstable discharge of the blow molding machine?

Under normal circumstances, it is because the servo valve and electronic ruler of the plastic blow molding machine fluctuate during operation after electromagnetic interference, which affects the stability of the screw discharge; in addition, the electronic ruler of the blow molding machine equipment Failure or contamination is also one of the important factors affecting screw discharge.

Before the screw is discharged, there is no twist.

There are still many reasons for this. It may be that the heating temperature is too low and the plastic material in the screw has not melted; or the screw itself has quality performance problems; it is also possible that the temperature of the discharge port is too high, so the material will blocked at the outlet.

The quality of screw discharge is not good.

The so-called poor quality of the material generally refers to: uneven material, impurities and so on. It will affect the subsequent molding production of the material. There are two reasons for this: one is that the temperature is not enough or the screw performance is not good, and the material is not melted uniformly; the other is that there is residual rubber at the screw feed port, which affects the quality of the material when the new material is discharged.