Dalian injection molding makes it homogenize and melt (this process is also called plasticization), and then applies pressure to the melted polymer melt with the help of plunger or screw. Then the high-temperature melt is injected into the pre closed low-temperature mold cavity a through the nozzle in front of the barrel and the sprue system of the mold. After the mold is locked with the mold locking force during the injection process, the injection device enters the working condition to make the nozzle fit with the mold.

After the end of the pre plastic metering and delay prevention process, in order to prevent the nozzle from forming cold material due to long-time contact with the cold die, it is usually necessary to withdraw the nozzle from the die, that is, enter the withdrawal working condition of the injection device. The size can be from large to small, and the product size is accurate, the product is easy to update, and can be made into parts with complex shape. Injection molding is suitable for mass production and molding processing fields such as products with complex shape. After taking out the plastic part, close the mold again for the next cycle.

According to the plasticizing mode, the injection molding machine is divided into plunger injection molding machine and screw injection molding machine. According to the transmission mode of the machine, it can be divided into hydraulic type, mold part and injection part, which are on the same vertical centerline, and the mold is opened along the vertical direction. Therefore, the utility model has the advantages of small floor area, easy placement of inserts and convenient loading and unloading of molds.

This type of injection molding machine gives full play to the plasticizing capacity of the injection device, which can shorten the production cycle and improve the production capacity of the machine. Therefore, it is especially suitable for the production of mass products with long cooling and setting time or requiring more auxiliary time due to the placement of inserts. Due to the high injection pressure.

Accordingly, a high pressure is generated in the mold cavity (the average pressure in the mold cavity is generally between 20 ~ 45MPa), so there must be a large enough clamping force. Electrical control cabinet operation and hydraulic system operation. Select the injection process action, feeding action, injection pressure, injection speed and ejection form respectively.