Analysis of thermoplastic injection molding process
The injection molding method of thermoplastics is to melt the plastic material and then inject it into the film cavity. Once the molten plastic enters the mold, it is cooled into a certain shape according to the cavity.
The resulting shape is often the finished product, and no further processing is required before installation or use as a final product. Many details, such as raised parts. Ribs and threads can be formed in one step of injection molding.
The injection molding machine has two basic components: an injection device and a mold clamping device for melting and feeding plastic to the mold. The function of the mold clamping device is to: (1) make the mold closed under the injection pressure; (2) take out the product.
The injection device melts the plastic before it is injected into the mold, and then controls the pressure and speed to inject the melt into the mold. There are two designs of injection devices currently used: screw-type preplasticizers or two-stage devices, and reciprocating screws. The screw preplasticizer uses the preplasticized screw (first stage) to send molten plastic to the injection rod (second stage).
发送反馈
历史记录
