Classification and production process of blow molding machine


How does a blow molding machine work? It is mainly divi […]

How does a blow molding machine work? It is mainly divided into three categories: extrusion-type blow molding machines, needle-type blow molding machines, and special structure-type blowing machines. The process of bottle blowing machine is mainly divided into two steps: one-step method and two-step method. The one-step and two-step blow molding machines are mainly used for PET and BOPP hollow container molding. But both have their own characteristics and are widely used. Comparatively speaking, the two-step method is more suitable for centralized production of preforms and scattered blow bottles; the one-step method is more suitable for online production of beverage companies.

The production process of bottle blowing machine mainly has the following 6 steps:

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

2. Use a mold clamping cylinder to tighten the mold;

3. Use high pressure or mechanical structure to lock the mold;

4, medium and high pressure pre-blowing, while stretching the cylinder action to expand the mold;

5. High pressure blowing, the preform is shaped according to the mold, and the pressure is maintained for a certain time;

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

The blower's pneumatic equipment is used in many places during the operation of the blower; from discharging—locking—stretching—high-pressure air blowing / deflation—fetching bottles, this series of actions are assisted by pneumatic equipment carry out. Such as stretching the high-pressure air blowing and deflating circuit, the gas path is divided into two parts, the atmospheric part and the high pressure part