Kunshan blow molding processing factory to introduce the principle and process of blow molding processing; Answer the question on everyone's mind.
After the liquid plastic is first sprayed out, the wind blown by the machine is used to blow the plastic body to the mold cavity of a certain shape, and then the product is made. The plastic is melted and quantitatively extruded in the screw extruder, and then it is formed through the mouth film, and then the wind ring is blown and cooled, and then the tractor pulls at a certain speed, and the winding machine winds it into a roll.
Operation process of large blow molding machine:
The double tuyere mode is used on the automatic air ring structure, during which the air volume of the lower tuyere is stable, and the circumference of the upper tuyere is divided into several air channels, each air channel is composed of air chamber, valve, motor, etc., and the motor drives the valve to adjust the opening degree of the air channel and control the air volume of each air channel. During the control process, the thickness signal detected by the thickness measuring probe is transmitted to the computer, the computer compares the thickness signal with the average thickness set at the time, calculates according to the thickness error and curve change trend, controls the motor to drive the valve to move, when the film is thicker, the motor moves forward and the tuyere closes down; On the contrary, the motor moves in the reverse direction, the tuyere increases, the air volume of each point on the circumference of the wind ring is changed, and the cooling speed of each point is adjusted, so that the transverse thickness error of the film is controlled in the target range.
Advantages of blow molding:
1, good safety function. The raw materials of blow molding products are plastic, and plastic has a non-conductive function, so it is relatively safe for the operator.
2, low cost of use. By improving the structure or changing the method of blow molding to improve the stiffness and strength of blow molding processing, so that the product can get used to the elements of its use environment and extend its service life, from this aspect, greatly reducing the cost of using the product.
3. Blow molding products are made of high molecular weight high density polyethylene resin, which is blown by extrusion once. It can be seamlessly connected, there is no situation of running gas, and the function of the product is relatively stable.
4, enough environmental protection, blow molding processing products are non-toxic and harmless, and have good corrosion resistance, convenient disinfection and cleaning, and can be recovered and used again, so it is very in line with the requirements of environmental protection.
5, blow molding processing products often can be diversified in shape, good anti-slip, no corner residual material.
The above is Kunshan blow molding processing manufacturers to introduce the advantages of blow molding processing, blow molding processing products are everywhere in our days, they can be used and safety and other functions for us to love, if you have this need, can contact us online, we will be happy to serve you!
