How are SMC molds made


Everyone is familiar with molds, but how many people un […]

Everyone is familiar with molds, but how many people understand the manufacture of molds?

The requirements for mold design and production are: precise size and smooth surface; reasonable structure, high production efficiency and easy automation; easy manufacturing, high life and low cost; the design meets the needs of the process and is economical and reasonable.

Factors such as rigidity, directivity, unloading mechanism, positioning method, gap size, etc. must be considered in the design of mold structure and parameter selection. The wearing parts on the mold should be easy to replace. For plastic molds and die casting molds, it is also necessary to consider a reasonable pouring system, molten plastic or metal flow state.

The position and direction of entering the cavity. In order to improve productivity and reduce the pouring loss of the runner, a multi-cavity mold can be used, and multiple same or different products can be completed in one mold at the same time. High-efficiency, high-precision, long-life molds should be used in mass production.

The stamping die should adopt a multi-station progressive die, and a progressive die with carbide inserts can be used to increase the service life. In small batch production and new product trial production, simple molds with simple structure, fast manufacturing, and low cost should be used, such as combination punches, sheet punches, polyurethane rubber molds, low melting point alloy molds, zinc alloy molds, superplastic alloy molds, etc. The mold has begun to use computer-aided design (CAD), that is, through a computer-centric system to optimize the design of the mold. This is the development direction of mold design.