The working principle of automatic blow molding machine

Automatic 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. One-step and two-step automatic blow molding machine molding process, mainly used for PET and BOPP hollow container molding. Both have their own characteristics and are widely used. In comparison, the two-step method is more suitable for concentrated production of preforms and dispersed blown bottles; while the one-step method is more suitable for online production of beverage companies.

The blowing procedure of the automatic bottle blowing machine mainly has 6 steps:

1) First put the heated plastic embryo into the mold;

2) Use a clamping cylinder to tighten the mold;

3) Use high pressure or mechanical structure to lock the prototype;

4) Medium and high pressure pre-blowing, while stretching the cylinder action to expand the blank;

5) High-pressure blowing, the preform is shaped according to the mold, and the pressure is kept for a certain period of time

6) Release the high pressure in the formed bottle, reset the cylinder-take the bottle.