What are the common failures of injection molds?


An injection mold is a tool for producing plastic parts […]

An injection mold is a tool for producing plastic parts. Injection molds are also the backbone of the current industrial age. It is an indispensable process in the industrial age. However, there are also many failures in the production process, so let's analyze some common failures.

1. Difficulty in gate stripping
During the injection molding process, the gate sticks to the gate sleeve and is not easy to come out. When the injection molding machine opens the mold, the product is prone to crack damage. In addition, the master of the injection molding machine needs to knock the rubber out of the gate with a copper rod, so that it can be released after loosening, which will seriously affect the production efficiency. The main reason for this failure is the poor finish of the gate taper, followed by the use of the mold The steel is too soft, and after a period of use, the end of the taper hole is deformed or damaged.

2. Poor cooling or water leakage
The cooling effect of the injection mold directly affects the quality and production efficiency of the product, such as poor cooling, large or uneven shrinkage of the product, and prone to deformation and other defects. If it cannot be formed normally or stop production, it will affect the progress of production. In severe cases, the moving parts such as the ejector rod will easily become stuck after thermal expansion.

The design and processing of the cooling system depends on the shape of the product. This crucial system cannot be omitted due to the complex structure of the mold or the difficulty in processing. Especially, the cooling problem must be fully considered for medium and large molds.