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Zipper injection system and clamping system

Time:2021-12-31 Views: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 preplasticized plunger injection type. At present, the most widely used is the screw type. Its function is that in a cycle of the plastic injection machine, a certain amount of plastic can be heated and plasticized within a specified time, and the molten plastic can be injected into the mold cavity through a screw under a certain pressure and speed. After the injection, the molten material injected into the mold cavity is kept in shape.

The composition of the injection system: the injection system is composed 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, an injection seat moving cylinder, and a screw drive device (melting motor).

The role of the clamping system: the role of the clamping system is to ensure that the mold is closed, opened and ejected products. 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, and to prevent the mold from opening seams, resulting in unfavorable status of the product.

The composition of the mold clamping system: the mold clamping system is mainly composed of a mold clamping device, a mold adjustment mechanism, an ejection mechanism, a fixed template up and down, a movable template, a mold clamping cylinder and a safety protection mechanism.