Plastic blow molding machine overhauls barrel and spider shaft

What should happen to the barrel and spider shaft when the plastic bottle blower is produced?
The combination of the two parts of the screw and the barrel on the plastic blow molding machine and the quality of the work between them have an important impact on the plasticization of the materials, the quality of the products, and the level of production efficiency. The working quality between them is related to the manufacturing accuracy of the two parts and the gap between the two working surfaces after assembly. After the plastic bottle blowing machine has been working for several years, if the wear of the two parts is serious, the output of the extrusion production will fluctuate or the output will decline. If the process overflow control of the barrel is relatively stable and normal, and melt decomposition often occurs, it means that the working gap between the machine and the screw has greatly exceeded the scope of the standard, resulting in extrusion work. The screw extrusion pushing amount is unstable. This phenomenon occurs only when the flow rate of the material returned from the two parts is relatively large, and the residence time of the melt in the barrel is too long. Therefore, the screw and barrel must be overhauled at this time.


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