What are the reasons for the leak of the automatic blow molding machine seal?

The automatic blow molding machine blow molding process is a two-way stretching process. During this process, the PET chain is bidirectionally elongated, oriented and divided, thereby increasing the mechanical properties of the bottle wall and improving the tensile, tensile and impact resistance. Strength and good air tightness. Although stretching helps to improve strength, it can't be stretched too much. Blowing is stopped between the glass transition temperature and the crystallization temperature. The abnormality is usually controlled between 90 and 120 degrees. In this interval, PET is expressed as a high-elastic state. After rapid blow molding and cooling, it becomes a bright bottle. In the one-step process, this temperature is determined by the cooling time in the injection molding process (such as the Aoki blow molding machine), so that it is necessary to connect the dry and blow two stations.

What to do if you encounter a leak in the seal during use, first find the reason:

1. The pressure of the sealing cylinder is not enough. If the low pressure sealing cylinder is used, the low pressure can be kept below 8 kg. The general water bottle is no problem. However, it is also necessary to look at the high-pressure blowing pressure. If the high-pressure blowing pressure is too large, the sealing cylinder will be pressed downward. If the high-pressure pressure is lowered, the bottle type can be blown to try to lower the high-pressure pressure, or the high-pressure pressure is too large, and the clamping pressure is high. If it is too small, the mold will be opened, which will also cause the seal to leak, and the automatic clamping pressure can be increased.

2. Whether the sealant is damaged or the seal is right, if it is off the seal, it will leak.

3. Whether the sealing cylinder block or seal is damaged, if the seal is damaged, it can be directly reflected. Open the sealing cylinder solenoid valve to know.

4. Whether the sealed cylinder solenoid valve is leaking or stuck or the exhaust is not smooth, these are also the reasons that affect the air leakage of the sealing cylinder.

Usually, the automatic blow molding machine can be maintained frequently. There will be fewer faults in air leakage. It is necessary to check whether the lubrication of the moving parts of the center lubrication system is sufficient. Check whether the safety door limit switch is intact and the trigger is normal. Can not be turned on, check whether the main oil circuit on-off valve and spool feedback input triggers normal, if it is not normal, it can not be turned on.