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    What is the effect of each part of injection molding machine

    selfurl:http://en.jingxiongsj.com/news347141.html   begintime:2018-12-25 17:56:00

    What is the effect of each part of injection molding machine

    (1) The effect of injection system: injection system is one of the most important parts of Ningbo injection molding machine. Generally, there are three main methods: plunger, screw and screw pre plastic plunger. Now the most widely used is screw type. The effect is that in one cycle of the injection molding machine, a certain amount of plastic can be heated and plasticized in a specified time, and then the molten plastic can be injected into the mold cavity through the screw under a certain pressure and speed. At the end of the injection, the molten material from the injection to the mold cavity shall be set. Injection system: injection system consists of plasticizing equipment and power transmission equipment. The plasticizing equipment of screw injection molding machine is mainly composed of feeding equipment, barrel, screw and nozzle. The power transmission equipment includes injection cylinder, injection seat moving cylinder and screw drive equipment (glue motor).

    (2) The effect of the closing system: the effect of the closing system is to ensure that the mold is closed, open and ejected. At the same time, after the mold is closed, a satisfactory locking force is provided for the mold to resist the cavity pressure caused by the molten plastic entering the cavity, and avoid the mold opening, resulting in the poor status of the products. Composition of the mold closing system: the mold closing system is mainly composed of the mold closing equipment, mold adjustment organization, ejection organization, front and rear fixed templates, mobile templates, mold closing oil cylinder and safety maintenance organization. (3) The effect of hydraulic transmission system of hydraulic system is to supply power for the injection molding machine according to various actions required by the process, and to satisfy the requirements of pressure, speed, temperature, etc. for each part of the injection molding machine. It is mainly composed of various hydraulic components and hydraulic auxiliary components, in which oil pump and motor are the power source of injection molding machine. All kinds of valves control the oil pressure and flow, and then satisfy the requirements of injection molding process.

    (3) Electrical control system the electrical control system and the hydraulic system can cooperate reasonably to complete the process requirements (pressure, temperature, speed, time) and various program actions of the injection machine. It is mainly composed of electrical appliances, electronic components, appearance, heater, sensor, etc. Generally, there are four control methods, manual, semi-automatic, full-automatic and adjustment.

    (4) Heating / cooling system modification the heating system of this section is used to heat the barrel and injection nozzle. Generally, the barrel of injection molding machine uses the electric heating ring as the heating equipment, which is installed on the outside of the barrel and tested by thermocouple in sections. The heat is transferred through the cylinder wall to provide heat source for material plasticization; the cooling system is mainly used to cool the oil temperature, which will cause a variety of faults, so it is necessary to control the oil temperature. The other place to be cooled is adjacent to the blanking opening of the material pipe, so as to avoid the melting of the material at the blanking opening, resulting in the abnormal blanking of the material.

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