Matters needing attention in the blow molding process of Meper machine

Everyone may be familiar with the blow molding machine. The most important thing is the machine and equipment used to blow the bottle. The blow molding machine can blow plastic particles or softened liquids into people through a certain process. The required bottle, compared with other raw materials, the plastic hollow container is not only light and cheap, but also has the characteristics of high safety. Its existence can be seen everywhere in our life, especially in the various beverages used at home. Bottles, etc. are all made of plastic as raw materials, which brings more and more convenience to people. However, what should people do after using the blow molding machine?

1. Before the blow molding machine is used, it should be seriously checked whether the moving parts are stable, and it is also necessary to seriously check whether the screws are softened. If there is, it should be tightened immediately to ensure the safety and the stability.

2. For places where the impact force is very weak, it is necessary to check whether the belt drive part is stable, whether there is serious wear and tear, which needs to be replaced and dealt with, and it is also necessary to add lubricating oil to each part to ensure the service life of the mechanical equipment more years.

Repairing the blow molding machine according to a certain order can not only ensure the stable production of the product, but also prolong the service time of the machine and equipment. Therefore, on the maintenance of the blow molding machine, it is necessary to accurately implement the following maintenance rules to improve product quality and productivity.

1. If the blow molding machine fails, it should be repaired as soon as possible. If you can take advantage of the power outage or repair the product when the product is replaced, it will help to reduce the downtime and never delay the production of the machine.

2. The parts that affect the blowing quality of the blow molding machine need to be replaced or repaired every six months. If there are any parts that affect the quality of blowing, the service time can be shorter, which can reduce the maintenance cost.

3. If you want to repair a small area of the blow molding machine, choose to repair it at the time when the glass melting furnace is repaired, so as to avoid the shutdown of the blow molding machine during the production process.

Several problems often encountered in the blow molding process of the blow molding machine?

1. Thin on top and thin on bottom: delay the pre-blowing time, or reduce the pre-blowing pressure and reduce the air flow.

2. The bottom is thick and the top is thin: the opposite of the above.

3. There are wrinkles under the bottleneck: the pre-blowing is very late or the pre-blowing pressure is very high, or the blank is cold here.

4. The bottom is white: the preform is very cold; it is too stretched; the pre-blowing is very late or the pre-blowing pressure is very low.

5. There is a magnifying glass phenomenon at the bottom of the bottle: the bottom of the bottle is too much; the pre-blowing is very late, and the pre-blowing pressure is very high.

6. There are wrinkles in the bottom of the bottle: the bottom temperature is very low (the heat at the gate is good); the pre-blowing pressure is very high and the flow rate is very large.

7. The whole bottle is cloudy (never uniform): cold is enough.

8. Partial whitening: Excessive stretching, the temperature here is so high, or the pre-blowing is too late, or the stretching rod is touched.

The following are three undesirable phenomena of the blow molding machine:

(1) The bottle wall of the bottle of the blow molding machine is very thick as a whole. The main reason is that the stretching temperature of the preform is very low and the stretching ratio of the preform is very small.

(2) The bottom of the bottle of the blow molding machine is thin and the upper part is thin. The reason is that the stretching speed is very fast, the primary blow molding pressure is very low, the secondary blow molding time is inappropriate, and the upper temperature of the preform is high and the upper temperature is low during stretch blow molding.

(3) The bottom of the bottle of the blow molding machine is thin and the upper part is thin. This is caused by the fact that the stretching speed is very slow, the primary blowing pressure is very high, the secondary blowing time is improperly controlled, and the temperature of each part on both sides during stretch blowing is improperly controlled.

How to choose a blow molding machine with a higher price than a low price

For bottle blowing machines, many people who are new to the plastic bottle industry need to understand and learn a lot of knowledge before purchasing, and they need to buy according to their own needs. The more expensive the blow molding machine, the better, but not necessarily for you. Since there are many factors involved in the final production process of the blow molding machine, only finding the appropriate use can produce good benefits.

To a few large drinks, mineral water, or cosmetics manufacturer, due to the use of packing quantity is very small, often and filling the integration of the product, this kind of bottle blowing machine should choose automatic, high-speed, stable quality, credible bottle blowing machine, only the bottle blowing machine never to the end of the production process of impact other link, affect the overall production efficiency. For some small and medium-sized manufacturers, semi-automatic, two-step blowing machine can also be considered. On the other hand, it can reduce the cost of investment required to buy the blowing machine for the first time. At the same time, this kind of blowing machine is quite high in production capacity, which is more and more in line with the needs of manufacturers.  Because the plastic bottles produced by the bottle blowing machine belong to hollow products, if a large number of stacking, the storage will form a very small pressure.  For some individuals or family workshops, two can consider the use of second-hand blowing machine, the price of this kind of blowing machine is quite high, if you understand the parameters of all aspects, buy again, there are still many higher than the low price of the machine is worth choosing.