Overview of Bottle Blowing Machine

Blowing machine is a kind of mechanical equipment specially used for making plastic bottles. It processes plastic raw materials into bottles of various specifications and shapes through a series of complex process flows. With the widespread application of plastic products in daily life, bottle blowing machine plays a vital role in the manufacturing industry. This article will introduce the working principle, process flow, technological development, common faults and their solutions of bottle blowing machine in detail.

Working Principle

The working principle of bottle blowing machine is mainly divided into two parts: preheating and bottle blowing molding. The specific process is as follows:

1. Preheating: The preform (embryo) is irradiated with infrared high-temperature lamp tubes to heat and soften the main part of the preform (embryo). In order to maintain the shape of the bottle mouth, the mouth of the preform (embryo) does not need to be heated, so a certain cooling device is required to cool it.

2. Bottle blowing molding: Place the preheated bottle (embryo) into the prepared blow mold, inflate it with high pressure, and blow and pull the preform (embryo) into the required bottle. The fully automatic bottle blowing machine combines the two operations of bottle blowing through the operation of the manipulator, eliminating the process of manually placing the preheated preform into the blow mold, greatly speeding up the production rate.

Process Flow

The process flow of the bottle blowing machine mainly includes the following steps:

1. Bottle preform preparation: the plastic raw material is made into a bottle preform (embryo) by injection molding or extrusion molding.

2. Preheating: heat the bottle preform (embryo) to an appropriate temperature to soften it.

3. Bottle blowing: put the preheated bottle preform (embryo) into the blow mold and blow it into the desired bottle shape through high-pressure gas.

4. Cooling and shaping: cool the blown bottle to ensure its stable shape.

5. Demolding: remove the cooled bottle from the blow mold.

Technological Development

With the advancement of science and technology, the technology of bottle blowing machines is also developing continuously. Modern bottle blowing machines usually use PLC computer control and touch screen display, which are easy to operate, reliable and highly stable. In addition, intelligent machine control technology is also constantly improving the quality assurance system of bottle blowing machines. For example, through the use of the AgrPETWallplus monitoring system, various data of the bottle blank, such as the thickness of the bottle wall, can be monitored to ensure product quality.

Common faults and solutions

In the process of using the blow molding machine, some common faults may be encountered. The following are several common faults and their solutions:

1. High temperature alarm of the light box water channel: The solution is to disassemble the rubber tube connecting the water channel and blow and clean the water channel with low-pressure gas and alcohol.

2. Claw failure: The solution is to adjust the height of the slide or the position of the claw.

3. The blow molding machine is stuck: The solution is to restart the machine.

4. The bottom of the bottle is thick and the top is thin: This is caused by too fast stretching speed, too low pressure of the first blow molding, improper control of the second blow molding time, and improper temperature control of the upper and lower parts during stretch blow molding. The corresponding parameters need to be adjusted to solve the problem.

Conclusion

As an efficient plastic bottle manufacturing equipment, the blow molding machine plays an important role in the modern manufacturing industry. Through continuous technological innovation and improvement, the performance and efficiency of the blow molding machine have been significantly improved, meeting the market demand for high-quality plastic bottles. Understanding the working principle, process flow and solutions to common faults of bottle blowing machines is of great significance to improving production efficiency and product quality.