Six vertical injection molding machine knowledge systems:
Injection molding machines typically include injection systems, clamping systems, hydraulic transmission systems, electrical control systems, lubrication systems, heating and cooling systems, and safety monitoring systems.
(1) The role of the injection system:
The injection system is one of the most important components of an injection molding machine. Generally, there are three main types of plunger type, screw type and screw plastic pre-plunger type. Currently, the most widely used screw type is used. Its function is that in the die casting cycle, a certain amount of plastic can be plasticized and plasticized for a predetermined period of time, and the molten plastic is injected into the cavity through the screw at a certain pressure and speed.
(2) Clamping system
The role of the clamping system: The function of the clamping system is to ensure that the template is closed, opened and removed. At the same time, after the mold is closed, a sufficient clamping force is applied thereto to withstand the pressure in the cavity created by the molten plastic entering the cavity, which prevents the die from being cut, which results in a bad condition of the product. The composition of the clamping system: the clamping system is mainly composed of a clamping device, a mold adjusting mechanism, an ejecting mechanism, a front and rear fixed template, a moving template, a clamping cylinder and a protection mechanism.
(3) Hydraulic system
The function of the hydraulic drive system is to implement an injection molding machine that is powered by the various actions required for the process and meets the pressure, speed and temperature requirements required for each part of the injection molding machine. It consists mainly of hydraulic components and auxiliary hydraulic components. The source of the injection molding machine is the oil pump and the engine. Various valves control pressure and fuel consumption according to the requirements of the injection molding process.
(4) Electrical control system
The electrical control system and the hydraulic system are properly coordinated to achieve the technical requirements (pressure, temperature, speed, time) of the injection molding machine and various program actions. It is mainly composed of electrical appliances, electronic components, meters, heaters, sensors and so on. There are usually four control modes: manual, semi-automatic, fully automatic and adjustable.
(5) Heating / cooling system
A heating system is used to heat the barrel and nozzle. The cylinder of the injection molding machine usually uses a heating coil as a heating device, is mounted outside the cylinder and is detected by a thermocouple. The heat is provided by the thermal conductivity of the pipe wall to provide a heat source for the plasticization of the material; the cooling system is mainly used to cool the oil temperature, and the oil temperature is too high, which may cause various failures, so the oil temperature must be monitored. Another place to be cooled is located next to the inlet of the feed pipe to prevent the material from melting at the inlet, resulting in improper cutting of the material.
(6) Lubrication system
The lubrication system is a circuit that provides lubrication conditions for the moving parts of the injection molding machine, a device for adjusting the shape, a link hinge, and the like. To reduce energy consumption and increase the life of components. Lubrication can be periodic manual lubrication or automatic electric lubrication.