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Classification of plastic moulds for automobiles

release time:2017-11-15 | Article Source:

  The car body stamping is divided into covering parts, stamping parts and general frame. Can express the characteristics of the car image clearly

  

  Pressing parts are automobile covering parts. There are many methods for classification of plastic moulds. According to the different methods of plastic parts forming, they can be divided into two parts

  

  The following categories:

  

  Compression die: compression mould, also called pressing die or pressing mould. The forming process of this kind of mold is that the plastic raw material is added directly to the open

  

  The die cavity is then filled with mold, and the plastic is filled with a cavity at a certain pressure after melting in the heat and pressure. At this point, the plastic

  

  The chemical structure of the molecule leads to the chemical crosslinking reaction, gradually hardening and setting. Compression dies are mostly used for thermosetting plastics, and their molded parts are mostly used for thermosetting plastics

  

  Electrical switch shell and daily necessities.

  

  Extrusion die: extrusion die, also called extrusion head. This kind of mold can continuously produce plastic with the same section shape, such as plastic pipes and bars,

  

  Sheet and so on. The heating and pressing device of the extruder is the same as that of the injection machine. Molten plastics will form continuously in the head

  

  Molding plastic parts, the production efficiency is particularly high.

  

  Injection mold: injection mold is also called injection mold. The forming process of the mould is characterized by placing the plastic raw material in the heating barrel of the injection machine

  

  . The plastic is heated and melted, and is pushed into the mould cavity by the nozzle and the gating system of the injection mould under the driving of the screw or plunger of the injection machine

  

  The mold cavity is cured by heat preservation, pressure maintaining and cooling. Because the heating and pressing device can play a role in different stages, the injection molding is not only an important part of the injection molding machine

  

  Plastic parts with complex shapes can be produced with high production efficiency and good quality. Therefore, injection molding occupies a large part in the molding of plastic parts

  

  The injection mould occupies more than half of the plastic mold. Injection molding machine is mainly used in thermoplastic molding, in recent years also gradually used

  

  Molding of thermosetting plastics.