What are the stages of the failure rule of the injection molding machine? injection molding machine The change rule of failure rate with time, which is often called bathtub curve. The change of failure rate of injection molding machine with time can be roughly divided into three stages: early failure period, sporadic failure period and consumption failure period.

　 1、 Early failure period

The injection molding machine is in the early failure period, and the failure rate is very high at the beginning, but the failure rate drops rapidly with the passage of time. Early failure period is also called running in period for mechanical products. The length of this period varies with the design and manufacturing quality of products and systems. The failure during this period is mainly caused by defects in design and manufacturing or improper use environment.

2、 Occasional failure period

The injection molding machine enters the accidental failure period, and the failure rate is generally stable, tending to a fixed value. During this period, failures are random. During accidental failure, the failure rate of injection molding machine is the lowest and stable. So it can be said that this is the best period or normal working period for injection molding machines. This section is called effective life.

Occasional failures are mostly caused by improper design, use and maintenance. Therefore, the failure rate can be reduced to the lowest level by improving the design quality, use management, monitoring, diagnosis and maintenance.

　 3、 Depletion failure period

In the later period of using the injection molding machine, the failure rate began to rise. This is caused by wear, fatigue, aging and corrosion of injection molding machine parts. If the overhaul is carried out at the inflection point, i.e. the beginning of the wear failure period, the failure rate can be reduced economically and effectively.

　　 Single cylinder injection molding machine The three stages of the failure rate curve truly reflect the change rule of the failure rate of the injection molding machine from running in, debugging, normal operation to overhaul or scrap. Strengthening the daily management and maintenance of the injection molding machine can extend the period of unexpected failures. Finding the inflection point accurately can avoid excessive maintenance or expand the scope of maintenance, thus obtaining the best investment benefit.