Plastic mold is a tool which is matched with plastic molding machine in plastic processing industry, and endows plastic products with complete configuration and accurate size. According to different molding methods, it can be divided into different types of molds.
0010010 nbsp;
It is mainly a kind of molding mold that is most commonly used in the production of thermoplastic parts. The processing equipment of the injection mold is the injection molding machine. The plastic is first heated and melted in the heating barrel at the bottom of the injection molding machine, and then driven by the screw or plunger of the injection molding machine, it enters the mold cavity through the injection nozzle and the pouring system of the mold. The plastic is cooled, hardened and molded, and demoulded Products.
Its structure is usually composed of forming parts, pouring system, guiding parts, pushing mechanism, temperature regulating system, exhaust system, supporting parts, etc. plastic die steel is used for manufacturing. Injection molding process is usually only applicable to the production of thermoplastics products. The plastic products produced by injection molding process are very extensive. From daily necessities to all kinds of complex electrical appliances, auto parts, etc. are molded by injection mold. It is the most widely used processing method in the production of plastic products.
0010010 nbsp;
2. Blow molding mold
A mold used to form hollow products (such as beverage bottles, daily chemical products and other packaging containers) of plastic containers. According to the technological principles, blow molding forms mainly include extrusion blow molding, injection blow molding, injection extended blow molding (commonly known as injection and pull blowing), multilayer blow molding, sheet blow molding, etc. The corresponding equipment for blow molding of hollow products is usually called plastic blow molding machine. Blow molding is only applicable to the production of thermoplastic products. The structure of blow molding die is simple, and the materials used are mostly carbon.
0010010 nbsp;
3. Extrusion die
A kind of mould, also called extrusion head, which is used to produce continuous shape plastic products, is widely used in the processing of pipes, bars, monofilament, plates, films, wire and cable coating, profiles, etc.
The corresponding production equipment is a plastic extruder. Its principle is that the solid plastic melts and plasticizes under the conditions of heating and rotating and pressing the screw of the extruder. The continuous plastic products with the same cross section and die shape are made through the specific shape of the die. Its main materials are carbon structural steel, alloy tools, etc. Some extrusion dies will be inlaid with diamond and other wear-resistant materials on the parts that need wear-resistant.
The extrusion process is usually only suitable for the production of thermoplastic products, which is significantly different from injection mold and compression mold in structure.
0010010 nbsp;
4. Blister mold
A mould for forming some simple plastic products with plastic plates and sheets as raw materials. The principle of the mould is to make the plastic plates and sheets fixed on the concave or convex mould by the method of vacuumizing and opening or the method of compressed air forming, which are deformed under the condition of heating and softening, and then pasted on the mould cavity to obtain the required molding products. It is mainly used for the production of some daily necessities, food and toy packaging products Production.
Because of the low pressure when forming, the mould materials are mostly made of cast aluminum or non-metallic materials, and the structure is relatively simple.
0010010 nbsp;
5. Press mold
Including compression molding and injection molding two types of structural mold. They are a kind of molds mainly used for forming thermosetting plastics, and the corresponding equipment is a pressure forming machine.
According to the characteristics of plastic, the compression molding method heats the mold to the molding temperature (generally at 103 ° 108 °), then puts the metered compression molding powder into the mold cavity and the feeding room, closes the mold, the plastic is softened and viscous under the action of high heat and high pressure, and solidifies after a certain period of time to form the required product shape.
0010010 nbsp;
6. High foaming polystyrene molding mold
The principle is that the polystyrene can be molded into the mold by steam, including two types of simple manual mold and straight through foam mold for hydraulic machines, mainly used for the production of industrial products packaging products. The materials for making the mould are cast aluminum, stainless steel, bronze, etc.
