The five main components of an injection molding machine and the role of each part
The injection molding machine is mainly composed of five parts: injection system, mold closing system, hydraulic system, electrical control system, heating/cooling system, each part has its special role, any part of the problem will cause the injection molding machine can not work properly. Below we will look at the specific role of each part of the injection molding machine.
(1) injection system
Injection system effect: injection system is one of the most important parts of the injection molding machine, generally there are plunger type, screw type, screw pre-plastic plunger injection 3 main methods. Now the most widely used is the screw type. Its effect is, in a cycle of plastic injection machine, can be in the specified time will be a certain amount of plastic heating plasticization, in a certain pressure and speed, through the screw will melt plastic injection mold cavity. After the injection, the injection into the cavity of the melt adhere to finalize the design.
Injection system composition: injection system consists of plasticizing equipment and power transmission equipment. Screw type injection molding machine plasticizing equipment mainly consists of feeding equipment, barrel, screw, injection nozzle part. Power transmission equipment includes injection cylinder, injection seat moving cylinder and screw drive equipment (melt glue motor).
(2) mold closing system
The effect of mold closing system: the effect of mold closing system is to ensure that the mold is closed, open and ejecting products. At the same time, after the mold is closed, the mold is provided with satisfactory clamping force to resist the mold cavity pressure caused by molten plastic entering the mold cavity, to avoid the mold opening, resulting in the bad situation of products. Composition of mold closing system: the mold closing system is mainly composed of mold closing equipment, mold adjusting organization, ejecting organization, front and rear fixed template, moving template, mold closing cylinder and safety maintenance organization.
(3) hydraulic system
The effect of the hydraulic transmission system is to supply power to the injection molding machine according to the 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 hydraulic components and hydraulic auxiliary components, among which oil pump and motor are the power source of injection molding machine. Various valves control oil pressure and flow, and then satisfied with the injection molding process requirements.
(4) electrical control system
The electrical control system and hydraulic system cooperate reasonably, which can complete the needling machine's process requirements (pressure, temperature, speed, time) and various program actions. Mainly by electrical appliances, electronic components, appearance, heaters, sensors and other components. Generally there are four control methods, manual, semi-automatic, automatic, adjustment.
(5) heating/cooling system
The heating system is used to heat the cylinder and injection nozzle. The heating ring is generally used as the heating equipment for the cylinder of the injection molding machine. It is installed on the outside of the cylinder and tested by the thermocouple section. Heat conduction through the cylinder wall provides heat source for material plasticization; The cooling system is mainly used to cool the oil temperature, high oil temperature will cause a variety of faults, so it is necessary to control the oil temperature. The other position that needs to be cooled is adjacent to the feeding mouth of the material pipe, so as to avoid the melting of the feeding mouth and the abnormal feeding of the material.
The above is the basic role of the five parts of the injection molding machine and the need to pay attention to the use of matters, when using the injection molding machine must pay attention to the use of methods, to avoid improper operation of the accident and failure.
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