Precautions for injection molding

The size of injection molding should not only meet the requirements of use and installation, but also consider mold manufacturing, equipment performance and raw material flow. Strictly control the factors that affect the precision of injection molded parts, including mold manufacturing precision, plastic composition and process conditions.

The surface roughness of injection molding is determined by the surface roughness of the mold, so the surface roughness of the mold is one level lower than the surface roughness of the product, and the requirements are met through grinding and polishing. The cooling shrinkage of the injection parts in the mold cavity makes it difficult to take out the injection parts. Therefore, in order to facilitate demoulding, sufficient demoulding slope shall be considered on the internal and external surfaces parallel to the demoulding direction.

Injection molding is the molding method of injection mold. The advantages of injection molding are fast production, high efficiency, automatic operation, various colors, size changes from large to small, product size is easy to change, and the shape is complex. In the mass production of complex shapes, parts and injection molding are often used.

Injection molding is an industry with strong technical and practical ability. Plastic raw materials, toner, nozzles, molds, injection molding machines, peripheral equipment, fixtures, spray, various auxiliary materials and packaging materials are used in the injection molding process. All these have brought great achievements to the management of the injection molding workshop. Compared with other industries or departments, managers at all levels in injection molding workshops have certain difficulties and higher requirements.

Although the mold structure may vary depending on the type and performance of plastics, the shape and structure of plastic products, and the type of injection molding machine, the basic structure is the same. The mold is mainly composed of gating system, temperature control system, molding parts and structural parts. The gating system and mold are in direct contact with the plastic and vary depending on the plastic. They are more complex and changeable parts in the mold, requiring high-precision parts.

Injection molding production requires 24-hour continuous operation, usually in two or three stages. There are many types of work and division of labor in the injection molding workshop, and different posts require different skills. In order to ensure the smooth production and operation of the injection molding workshop, it is necessary to manage the personnel, materials, equipment and tools involved in each link, mainly including: raw material room, scrap room, batching room, production site, post-processing area, tool room, semi-finished product area, office, etc. Operation and coordination of management in various fields.