Introduction to the operating principle of bottle blowing machine
Release time:
2024-04-09
Blow molding machines are mainly divided into three categories: extrusion blow molding machines, injection blow molding machines and special structure blow molding machines. The processing technology is mainly divided into one-step method and two-step method. The one-step method and two-step method blow molding machine molding process are mainly used for PET and BOPP hollow containers. Both have their own characteristics and are widely used. In comparison, the two-step method is more suitable for centralized production of preforms and decentralized blowing of bottles, while the one-step method equipment is more suitable for online production of beverage companies.
Blow molding machines are mainly divided into three categories: extrusion blow molding machines, injection blow molding machines and special structure blow molding machines. The processing technology is mainly divided into one-step method and two-step method. The one-step method and two-step method blow molding machine molding process are mainly used for PET and BOPP hollow containers. Both have their own characteristics and are widely used. In comparison, the two-step method is more suitable for centralized production of preforms and decentralized blowing of bottles, while the one-step method equipment is more suitable for online production of beverage companies.
The blowing process of the bottle blowing machine mainly includes six steps:
1) First, place the heated plastic embryo into the mold;
2) Lock the mold with a locking cylinder;
3) Lock the embryo mold with high pressure or mechanical structure;
4) Pre-blow with medium or high pressure to expand the embryo mold by stretching the cylinder at the same time;
5) Blow with high pressure to shape the bottle blank according to the mold and maintain pressure for a certain period of time;
6) Release the high pressure in the molded bottle and reset the cylinder to - take out the bottle.
Pneumatic equipment is widely used in the operation of bottle blowing equipment. From discharging - locking - stretching - high-pressure blowing\deflation - bottle taking, this series of actions are all completed with the assistance of pneumatic equipment. For example, in the stretching high-pressure blowing and deflation circuit, the gas circuit is divided into two parts, namely the normal pressure part and the high pressure part.
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