Drink bottle blow molding mold custom hollow blow molding is extruded from the extruder, is still in the softening state of the tubular hot plastic plastic billet into the molding mold, and then through the compressed air, the use of air pressure to make the billet deformation along the mold cavity, so as to blow into the neck short hollow products.
Beverage bottle blow molding mold customization
Hollow blow molding has been widely used in the production of various thin shell hollow products, chemical and daily packaging containers, as well as children’s toys.
Hollow blow molding (also known as blow molding) is a method to form hollow products by blowing hot melt embryos closed in the mold with the help of gas pressure. It is the third most common plastic processing method and also a plastic molding method with rapid development.
The products produced by hollow blow molding machine require uniform wall thickness. Generally, hollow vessels below 0.2L can not be equipped with the blank wall thickness control device. In other cases, the blank wall thickness control device should be considered, especially for hollow molding products with complex sections.
At present, the wall thickness control is usually achieved by changing the lip clearance between the head cover and the die core. According to the different shapes of the head cover and the die core, the adjustment method of lip clearance is also different. The upper and lower movement of the mould core is generally driven by hydraulic cylinder.
When the middle air blow molding machine processes the plastic hollow container with simple shape, it can be realized by switching hydraulic system. The electro-hydraulic directional valve only accepts power or power signal, so that the hydraulic cylinder up or down, the distance of the hydraulic cylinder movement (that is, the change of the opening of the mouth mold) by the upper and lower limit nut set, the speed of the hydraulic cylinder movement by the flow valve throttling action set, the electric signal of the electro-hydraulic directional valve by the time relay control.
This control method is simple and cheap, but the rule of wall thickness change is simple, there are only two kinds of wall thickness change, can only be used for squeezing and blowing simple shape hollow vessel.
Post time: May-12-2022