According to the different molding methods, it can be divided into different plastic processing mold types corresponding to different technological requirements, mainly injection molding mold, extrusion molding mold, blister molding mold, high foaming polystyrene molding mold and so on.
plastic injection (plastic) mold
It is mainly in the production of thermoplastic plastic products has been widely applied in the kind of forming dies, plastic injection mold and the corresponding equipment is plastic injection molding machine, plastic in the first place in the bottom of the injection machine heating cylinder heated melting, and then in the injection machine screw or plunger, driven by the injection machine nozzle and mould gating system into the mold cavity, cooling hardening plastic molding, Demoulding to get the product. Its structure is usually composed of forming parts, pouring system, guiding parts, pushing mechanism, temperature regulating system, exhaust system, supporting parts and so on. Plastic mold steel modules are usually used as manufacturing materials, and the commonly used materials are mainly carbon structural steel, carbon tool steel, alloy tool steel, high-speed steel and so on. Injection molding processing method is usually only suitable for the production of hot plastic products, plastic products produced by injection molding process is very wide, from daily necessities to all kinds of complex machinery, electrical appliances, vehicle parts are molded by injection mold, it is the most widely used in the production of plastic products a processing method.
Plastic pressing mould
Including compression molding and injection molding two structural mold types. They are mainly used to mold thermosetting plastics, and the corresponding equipment is a pressure molding machine. Compression molding method according to the characteristics of plastic, heat the mold to the forming temperature (generally in 103° -108 °), and then put the measured good pressure powder into the mold cavity and feeding chamber, close the mold, plastic in high heat, high pressure under the action of softening viscous flow, solidify after a certain time, become the required product shape. The difference between injection molding and compression molding is that there is a separate feeding chamber, the mold is closed before forming, and the plastic is preheated in the feeding room to show viscous flow, and it is adjusted and squeezed into the mold cavity under the action of pressure and hardened forming. Compression molds are also used to form some special thermoplastics such as refractory thermoplastics (such as polyfluorinated ethylene) blanks (cold molded), resin lenses with high optical properties, slightly foaming nitrocellulose automotive steering wheels, etc. The press mold is mainly composed of a cavity, a feeding cavity, a guiding mechanism, a pushing part, a heating system, etc. Injection molds are widely used to package electrical components. The material used in the manufacture of the pressing mould is basically the same as that of the injection mould.
Plastic extrusion die
A type of mould used to form and produce continuous shape plastic products, also known as extrusion molding machine head, widely used in the processing of pipes, bars, monofilaments, sheets, films, wire and cable cladding, profiles, etc. The corresponding production equipment is plastic extruder, whose principle is that solid plastic is melted and plasticized under the conditions of heating and rotating pressure of the screw of the extruder, and continuous plastic products with the same cross section and the shape of the mouth die are made through a specific shape of the mouth die. Its manufacturing materials mainly include carbon structural steel, alloy tools, etc., and some of the extrusion dies will be embedded with wear-resistant materials such as diamond on the parts requiring wear-resistance. Extrusion process is usually only suitable for the production of thermoplastic products, and its structure is significantly different from injection mold and pressure mold.
Plastic blow molding tool
Is used for molding plastic hollow container class products (such as beverage bottle, cosmetic products all kinds of packaging containers) of a mold, blow moulding main form according to the process principle of extrusion blow molding hollow molding, injection blow molding hollow molding, injection stretch blow molding hollow molding (commonly known as "note" blowing), multi-story hollow blow molding, sheet molding hollow molding, etc. The equipment corresponding to blow molding of hollow products is usually called plastic blow molding machine. Blow molding is only suitable for the production of hot plastic products. Blow molding mold structure is relatively simple, the material used to make more carbon
Plastic blister mold
Is a plastic plate, sheet as raw material forming some relatively simple plastic products of a mold, its principle is to use the vacuum blooming method or compressed air molding method to fix on the concave die or punch plastic plate, sheet, deformation in the case of heating softening and stick on the cavity of the mold to get the required molding products, Mainly used for some daily necessities, food, toy packaging products production. The pressure of the blister mold is low when forming, so the mold materials are mostly made of cast aluminum or non-metallic materials, and the structure is relatively simple
High foaming polystyrene molding mold
It is a kind of mold that uses the raw material of developable polystyrene (beaded material composed of polystyrene and foaming agent) to form the foam It is a kind of mold that uses the raw material of developable polystyrene (beaded material composed of polystyrene and foaming agent) to form the foam packaging material of various desired shapes. The principle is that the polystyrene can be steam formed in the mold, including simple manual operation mold and hydraulic press straight-through foam mold two types, mainly used to produce industrial products packaging products. The moulds are made of cast aluminum, stainless steel, bronze, etc.
