Automobile mold classification and manufacturing process

In a broad sense, "automobile mold" is the general name of the mold for manufacturing all parts of the automobile. For example, injection molds, stamping molds, forging molds, casting wax molds, glass molds, etc. When people talk about cars, the first thing they see is the body of the car. That is to say, the body is the identification assembly of the car. The body represents the image of that car. In a narrow sense, automobile mold is the general term for all stamping parts on the automobile body. That is, "automobile body stamping die". For example, roof flanging die, beam reinforcement plate pressing die, etc.

Classification of 1. Automobile Plastic Mould

There are many ways to classify automobile plastic molds. According to the different methods of molding and processing of plastic parts, they can be divided into the following categories:

· Injection Mold

Injection mold is also called injection mold. The molding process of this mold is characterized by placing the plastic raw material in the heating barrel of the injection machine. Plastic heated melting, in the injection machine screw or plunger to push, through the nozzle and mold pouring system into the mold cavity, plastic in the mold cavity by heat preservation, holding pressure, cooling solidification molding. Since the heating and pressurizing device can play a role in stages, injection molding can not only form plastic parts with complex shapes, but also have high production efficiency and good quality. Therefore, injection molding occupies a large proportion in the molding of plastic parts, and injection molds account for more than half of plastic molding molds. The injection machine is mainly used for the molding of thermoplastics, and has been gradually used for the molding of thermosetting plastics in recent years.

· Compression die

Compression mold is also called pressure mold or pressure mold. The molding process of this mold is characterized by the plastic raw materials directly added to the open mold cavity, and then the mold is closed, the plastic is melted under heat and pressure, and the cavity is filled with a certain pressure. At this time, the molecular structure of the plastic produces a chemical cross-linking reaction, which gradually hardens and sets. Compression molds are mostly used for thermosetting plastics, and their molded plastic parts are mostly used for electrical switch housings and daily necessities.

· Transfer mode

Transfer mold is also called injection mold or extrusion mold. The molding process of this mold is characterized by adding plastic raw materials into the preheated feeding chamber, and then applying pressure to the plastic raw materials in the feeding chamber by the pressure column. The plastic melts at high temperature and high pressure and enters the cavity through the gating system of the mold, and then chemical crosslinking occurs to reflect and gradually solidify and form. The transfer molding process is mostly used for thermosetting plastics, which can form plastic parts with complex shapes.

· Extrusion die

Extrusion die is also called extruder head. This mold can continuously produce plastics with the same cross-sectional shape, such as plastic pipes, bars, sheets, etc. The apparatus for heating and pressurizing the extruder is the same as that of the injection machine. The molten state of the plastic through the head will form a continuous molding plastic parts, the production efficiency is particularly high.

In addition to the types of plastic molds listed above, there are vacuum forming molds, compressed air molds, blow molds, low foam plastic molds, etc.

The stamping parts on the car body are roughly divided into covering parts, beam parts and general stamping parts. The stamping part that can clearly represent the image characteristics of the car is the car cover. Therefore, the more specific automobile mold can be said to be "automobile panel stamping mold". Referred to as automobile cover stamping die. For example, trimming die for front door outer panel, punching die for front door inner panel, etc.

Classification of 2. Automobile Stamping Die

Of course, there are not only stamping parts on the car body. All the molds for stamping parts on automobiles are called "automobile stamping molds". To sum up is:

1. Automobile mold is the general name of the mold for manufacturing all parts of the automobile.

2. The automobile stamping die is the die for punching all the stamping parts on the automobile.

3. The stamping die for automobile body is a die for punching all stamping parts on the automobile body.

4. The stamping die for automobile covering parts is a die for punching all the covering parts on the automobile body.