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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.