How Does The Injection Machine Work?

The principle of the thermoplastavtomat is similar to that of the injection syringe. It USES a screw (or plunger) traction to inject plasticized plastic into the closed cavity of the shape. The process of obtaining finished products after curing and curing.
Injection molding is a cyclical process. Each cycle consists mainly of: quantity delivery - melting and plasticizing - pressure injection - filling and cooling of the mould - opening and assembly of the mould. After removal of the plastic part, the form is closed again and the next cycle is carried out.
Elements of operation of the injection molding machine: elements of operation of the injection molding machine include three aspects: operation of the control keyboard, operation of the electric control system and operation of the hydraulic system. The actions of the injection process, feed actions, injection pressure, injection rate, emission type selection, temperature control of each barrel section, injection pressure and back pressure setting shall be performed accordingly.
The process of forming a conventional screw thermoplast is as follows: first granulated or powdery plastic is added to the cylinder, and plastic is melted by rotating the screw and heating the outer wall of the cylinder. Then the machine clamps the shape and moves the injection saddle forward. Bring the nozzle to the molding mould, and then apply the oil under pressure to the injection cylinder to push the screw forward, thereby spraying the molten material into the closed mould with a nozzle. Lower temperature at high pressure and high speed. After a certain period of time, the time and pressure are maintained (also called pressure storage) and cooled for hardening and forming, and the shape can then be opened and taken from the product. Outwards (the purpose of pressure containment is to prevent the return flow of melted material into the mould cavity, to replenish the material into the mould cavity and to provide the finished product with certain tolerances in density and size). The basic requirements for injection molding are plasticization, injection molding and molding. Plasticizing is a prerequisite for the sale and quality assurance of molded products. To meet the casting requirements, the casting shall ensure sufficient pressure and speed. At the same time, the high injection pressure into the shape cavity creates a correspondingly high pressure (the average pressure in the shape cavity is usually between 20 and 45 mpa), so the clamping force of the shape cavity should be quite large. It can be seen that the injection device and the shape clamping device are the key components of the injection molding machine.