New discovery of injection molding technology

Date:2022-7-19 Author:Sam

\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; injection compression \u0026 nbsp; compression \u0026 nbsp; moreDing/ICM) is a high -level form of traditional injection molding.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; it can increase the inflow length/wall thickness ratio of injection molding parts; use smaller mold locking and injection pressure; reduce the internal stress of the material; and improve processing productivity.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; injection compression molding is suitable for various thermoplastic engineering plastic production products, such as large -sized curved parts, thin walls, miniature parts, optical lenses, and good anti -attack characteristics requirements. Parts.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; The main features of injection compression molding compared with the traditional injection molding process, the significant feature of the injection compression molding is that its mold space can be automatically adjusted according to different requirements. For example, it can be closed before the material is not injected into the cavity, and the cavity space can be expanded to twice the thickness of the part of the part. In addition, according to different operation methods, the corresponding control of the cavity space should be controlled during the material injection or after the injection, so that it is matched with the injection process, so that the polymer maintains the proper pressure state, and achieves the contraction of compensation materials to shrink Effect.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; according to the geometric shape, surface quality requirements, and different injection molding equipment conditions of injection molding parts.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; they are: sequential; co -motion; breathing and local pressure. \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp;
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; sequential injection compression molding process, its injection operation and mold-type cavity pushing It is done in order. At the beginning, the mold guidance part was slightly closed, and there was a cavity space of about twice the thickness of the part wall. When the resin is injected into the mold cavity, the mold activity part is pushed until it is completely closed and the polymer is compressed in the cavity. In the process, because the moment when the injection to the beginning of the compression will have a moment when the aggregate logistics is suspended and static, it may form a streaming trace on the surface of the parts. Time texture structure and material types.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; operation process. This ICM can be used to use a crank rod device.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; common moving ICM (SIM-ICLocking power and reducing 30 % of injection pressure. The test using SIM-ICM to make car body embedded plates shows that when the mold uses the central pouring channel and the wall thickness of the parts is 1.5mm, its flow length can increase by 200 % compared to traditional injection.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; In addition, the reduction of the locking power to a large extent depends on when the mold is closed, and the lock mold is too fast or too slow.
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; conclusion \u0026 nbsp;
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; injection compression molding has been successfully applied for many years, and its operation is relatively easy. As long as there are appropriate design specifications and appropriate materials and processes, it may apply existing injection molding equipment and some adjustments to the software to achieve operation. \u0026 nbsp;
\u0026 nbsp; \u0026 nbsp; \u0026 nbsp; \u0026 nbsp; ICM compared with traditional injection molding, its advantage is that there is a large inflatable length wall thickness ratio; Make large parts on the top; it also has lower material internal stress and achieves good results in the refraction of light. Therefore, it is suitable for making some optical products, such as CDS, DVSS and eye lenses.