Introduction of vertical injection molding machine

Introduction of vertical injection molding machine:

A vertical injection molding machine is a mechanical device. Usually consists of an injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc. The injection system is one of the most important components of the injection molding machine. Generally, there are three main forms: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is that in a cycle of the injection molding machine, after a certain amount of plastic can be heated and plasticized within a specified time, the molten plastic can be injected into the mold cavity through a screw under certain pressure and speed.

Vertical injection molding machine structure and function:

After the injection is completed, the shape of the molten material injected into the mold cavity is maintained. Composition of the injection system: The injection system consists of a plasticizing device and a power transmission device. The plasticizing device of the screw injection molding machine is mainly composed of a feeding device, a barrel, a screw and a nozzle. The power transmission device includes an injection cylinder, injection seat moving cylinder and screw drive device (melting motor).

(1) Injection system The role of the injection system: The injection system is one of the most important components of the injection molding machine. Generally, there are three main forms: plunger type, screw type, and screw pre-plastic plunger injection type. The most widely used is the screw type. Its function is that in a cycle of the injection molding machine, after a certain amount of plastic can be heated and plasticized within a specified time, the molten plastic can be injected into the mold cavity through a screw under certain pressure and speed.

(2) The function of the clamping system: the function of the clamping system is to ensure that the mold is closed, opened and ejected. At the same time, after the mold is closed, sufficient clamping force is provided to the mold to resist the cavity pressure generated by the molten plastic entering the mold cavity, so as to prevent the mold from opening and causing a bad status of the product. The composition of the clamping system: the clamping system is mainly composed of a clamping device, a mold adjustment mechanism, an ejector mechanism, a front and rear fixed template, a moving template, a clamping cylinder and a safety protection mechanism.

(3) Hydraulic system The function of the hydraulic transmission system is to provide power for the injection molding machine according to various actions required by the process, and to meet the requirements of pressure, speed, temperature, etc. required by each part of the injection molding machine. It is mainly composed of various hydraulic components and hydraulic auxiliary components, among which the oil pump and the motor are the power source of the injection molding machine. Various valves control oil pressure and flow to meet the requirements of the injection molding process.

(4) Electrical control system The electrical control system and the hydraulic system cooperate reasonably to realize the technological process requirements (pressure, temperature, speed, time) and various program actions of the injection machine. It is mainly composed of electrical appliances, electronic components, instruments, heaters, sensors, etc. There are generally four control methods, manual, semi-automatic, fully automatic, and adjustment.

(5) Heating/cooling system The heating system is used to heat the barrel and the injection nozzle. The barrel of the injection molding machine generally uses an electric heating ring as a heating device, which is installed outside the barrel and is detected by thermocouples in sections. Heat conduction through the cylinder wall provides a heat source for material plasticization; the cooling system is mainly used to cool the oil temperature. Too high oil temperature will cause various failures, so the oil temperature must be controlled. Another location that needs to be cooled is near the feeding port of the feeding tube to prevent the raw material from melting at the feeding port, resulting in the raw material being unable to be fed normally.

(6) Lubrication system The lubrication system is a circuit that provides lubrication conditions for the relative moving parts of the moving platen, mold adjustment device, connecting rod machine hinge, etc. of the injection molding machine, so as to reduce energy consumption and improve the life of parts. Lubrication can be done manually on a regular basis. Lubrication, also automatic electric lubrication.