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EspañolThe stamping parts of the car body are generally divided into covering parts, beam frame parts and general stamping parts.The stamping parts which can clearly indicate the characteristics of automobile image are automobile covering parts.There are many ways to classify automobile plastic mold. According to the different methods of plastic manufacturing, the following categories can be divided into the following categories:
Compression mold: compression mold or pressure die or die.This mold molding process characteristic is, plastic raw materials directly in the open mold cavity, and then mould clamping, plastic was under heat and pressure is molten, filled cavity with a certain pressure.At this point, the molecular structure of plastic produces chemical crosslinking reaction, gradually hardening and finalizing.The compression mold is mainly used for thermosetting plastic, which is mainly used in the shell of electric switch and daily necessities.
Extrusion die: extrusion die is also known as extruder head.This kind of mold can continuously produce plastic with the same shape, such as plastic tube, bar, sheet, etc.The heating pressure of the extruder is the same as that of the injection machine.The plastic of molten state is formed continuously by the machine head, and the production efficiency is very high.
Injection mold: injection mold is also called injection mold.The molding process is characterized by placing the plastic material in the heating cylinder of the injection machine.Molten plastic is heated, the injection machine screw or plunger, driven by the nozzle and the mould gating system into the mold cavity, the Canon of insulation plastic in the mold cavity, pressure, cooling curing.Because the heating pressure device can be used in stages, the injection molding can not only shape complex plastic parts, but also produce high efficiency and good quality.Therefore, injection molding occupies a large proportion in plastic molding, and injection mold accounts for more than half of the plastic mold.The injection machine is mainly used in the forming of thermoplastic plastic and has been used in the molding of thermosetting plastics in recent years.
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