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What reason is the bottle often blow bad?

Views: 1     Author: HUAN MACHINERY     Publish Time: 2022-09-01      Origin: HUAN MACHINERY

If the bottle and the mold do not match or it is obvious that the bottle is broken, what is the pressure of the automatic blow molding machine? (General air pressure is about 2.0-3.0MPA), if the pressure is normal, check whether the exhaust structure of the mold is reasonable, check whether the temperature is normal, if not, adjust to the appropriate temperature.

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Check the setting of the exhaust time. If the exhaust setting is normal, and there is an explosion sound every time the bottle is blown, then it can be judged that the exhaust valve is faulty. Please open the exhaust valve to check the condition of the spring box seal. (Another phenomenon of this kind of failure is the sound of unclean exhaust). Replace the exhaust valve if you can.


If the tube blank turns white after baking, reduce the temperature or increase the rotational speed. If the tube blank does not turn white after drying, but the bottle turns white when blown out, it means that the temperature is low, which is just the opposite of before.


What should I do if there is excess flash after the bottle is made? It is mainly at the bottle mouth and the bottle bottom. If the bottom of the bottle has flash, it is mainly because the temperature at the bottom of the bottle is too low and the temperature at the bottle mouth is too high. Please lower the temperature of the bottle mouth and increase the temperature of the bottle bottom. Or appropriately reduce the delayed blowing time. The bottle has extra flash at the top, which is the exact opposite of the extra flash at the bottom.

After the bottle is formed, one side is thick and one side is thin. Sometimes the bottom of the bottle is not in the center. It should be checked whether the eccentricity of the tube blank is qualified. Adjust the stretch rod to the center of the bottom of the mold. After adjustment, increase the blowing time appropriately. A wall thickness controller can also be added. Our HUAN hollow blow molding machine adopts MOOG wall thickness controller to ensure that the wall thickness of the bottom and the bottle body is uniform, making the product more beautiful.


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