xIn recent years, the development of blow molding machine
is very rapid, and Z common but three major categories, the conventional plastic blow molding machine can be divided into three major types, including extrusion blow molding machine, injection blow molding machine and a special structure of the blow molding machine, and stretch blow molding machine can be classified as extrusion blow molding machine, injection blow molding machine and special structure of one of the blow molding machine, and the common extrusion blow molding machine is with the blow molding machinery and mold machinery The extrusion blow molding machine is a combination of the blow molding machine and the die closing machine, which is generally composed of the extrusion die, the blowing device, the die closing structure, the thickness control system of the blow molding machine and the transmission machine.
In the case of blow molding of large products, the storage cylinder is mostly used. The volume of the accumulator cylinder is 1KG in the smallest case and up to 240KG in the largest case, and the thickness control device is used to control the wall thickness of the billet up to 128 points, but generally between 20 and 30 points, and the extrusion blow molding machine can produce hollow products in the volume range of 2.5ML-1041.
Injection blow molding machine is the combination of injection molding machine and blow molding mechanism, including plasticizing mechanism, hydraulic system, control electrical and other mechanical components. The common types are three-station injection blow molding machine and four-station injection blow molding machine. Three-station machines have three stations for preforming, blowing and demolding, each station is 120° apart. The four-station machine has one more preforming station, each station is 90° apart. In addition, there are duplex injection blow molding machines with 180° separation between stations. The injection blow molding machine produces plastic containers with precise dimensions and without secondary processing, but the mold cost is higher. Special structure blow molding machines are blow molding machines that use sheet material, molten material and cold blanks as blanks to blow hollow bodies with special shapes and uses. Due to the different shapes and requirements of the products produced, the structure of the blow molding machine varies.
Therefore, we have to choose according to our actual needs, but large blow molding machine manufacturers believe that it is helpful to have some methods of identification.