the constitute of injection molding machine - Min-Hui

the constitute of injection molding machine - Min-Hui: Injection molding machine is the thermoplastic or thermosetting materials using plastic molding mold into various shapes of plastic products of the main molding equipment.

the constitute of injection molding machine
Injection molding machine also known as injection molding machine or injection machine.t is the thermoplastic or thermosetting materials using plastic molding mold into various shapes of plastic products of the main molding equipment. Injection molding machines can be divided into vertical, horizontal and vertical and horizontal composite types according to the arrangement mode of injection device and clamping device.
Injection molding machine usually consists of injection system, clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc.
  • injection system：
  • Role of injection system: Injection system is one of the most important parts of injection molding machine, there are generally plunger type, screw type, screw pre-
  • plastic plunger injection,There are three main forms of injection.The most widely used is the screw type. Its effect is, in a cycle of plastic injection machine, can in
  • the specified time will be a certain amount of plastic heating plasticized, under a certain pressure and speed, through the screw molten plastic injection mold cavity. At
  • the end of the injection, the melt injected into the mold cavity is maintained in shape.

Composition of the injection system: The injection system is composed of a plasticizing device and a power transmission device.
The plasticizing unit of screw injection molding machine is mainly composed of feeding device, barrel, screw, gluing component and nozzle. The power transfer device comprises an injection cylinder, a moving injection base cylinder and a screw drive device (glue motor).

The clamping system
Role of clamping system: Clamping system is used to ensure the closure, opening and ejecting of molds. At the same time, after the mold is closed, the mold is provided with enough clamping force to resist the pressure of the mold cavity generated by molten plastic entering the mold cavity, to prevent the mold from opening joints, resulting in the bad status of products.
Composition of clamping system: clamping system mainly consists of clamping device, machine stranding, adjusting mechanism, ejecting mechanism, front and back fixed template, moving template, clamping cylinder and safety protection mechanism.

The hydraulic system
The function of hydraulic transmission system is to realize the injection molding machine according to the process of various required action to provide power, and meet the pressure, speed, temperature and other requirements of each part of the injection molding machine. It is mainly composed of its own hydraulic components and hydraulic auxiliary components, among which the oil pump and motor are the power source of the injection molding machine. Various valves control the oil pressure and flow, so as to meet the requirements of injection molding process.

Electrical control
The electrical control system and the hydraulic system cooperate reasonably, can realize the injection machine process requirements (pressure, temperature, speed, time) and various program action. It is mainly composed of electrical appliances, electronic components, instruments (see the following picture on the right), heaters and sensors. Generally there are four kinds of control, manual, semi-automatic, automatic and adjustment.

Heating/cooling
The heating system is used to heat the feed cylinder and the injection nozzle. The feed cylinder of the injection molding machine generally adopts an electric heating circle as the heating device, which is installed on the outside of the feed cylinder and tested by the thermocouple in sections. Heat conduction through the cylinder wall provides heat source for plasticization of materials. The cooling system is mainly used to cool the oil temperature. Too high oil temperature will cause a variety of faults, so the oil temperature must be controlled. The other place that needs to be cooled is near the feeding port of the material pipe to prevent the material from melting, resulting in the failure of normal feeding of the material.

Lubrication system
The lubrication system is the injection molding machine's moving formwork, adjusting device, connecting rod machine hinge, shooting table and other places have relative movement to provide lubrication conditions of the loop, in order to reduce energy consumption and improve the life of the parts, lubrication can be regular manual lubrication, can also be automatic electric lubrication.

Safety monitoring
The safety device of injection molding machine is mainly used to protect the safety of the machine. It is mainly composed of safety gate, safety baffle, hydraulic valve, limit switch, photoelectric detection element, etc., to realize the interlocking protection of electricity-mechanics-hydraulic.
The monitoring system mainly monitors the oil temperature, material temperature, system overload, process and equipment faults of the injection molding machine, and gives instructions or alarms when abnormal conditions are found.
That all the kownledge of injection molding machine,next nwes i will introduce How to save energy and reduce consumption of injection molding machine,if you interest in it,welcom to watch.

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