How to Set Up Mold Protect on Your Injection Machine

Optimized Designs of LSR Silicone Injection Molding Machine_LSR injection molding factory in China-min

Why we need to set mold protection to prevent damage? Beside the injection molding machine itself, the second most expensive piece of equipment we use on a daily basis is the mold. If the molds are damaged, you are not only responsible for the cost of maintenance, but also for downtime and labor costs.If done correctly, the mold can rest on something as thin as a business card. Here are three key components for setting up mold protection on injection molding machines:

1. Starting position of mold protection

When do you reach the point in the mold where you might break when the mold is closed? In the figure above, this point is when the mold touches the guide pin. This is where we want to start mold protection; close the die until there is a small gap between the protrusion of the half die and the other half and there is a risk of damage. Then look at the mold location on the controller to see where you want mold protection to start.

2. Position of die protection end

You need to stop protecting the mold if the mold fully closed. This is called the clamping position or die contact position on the machine. Clamp the die in manual die setting mode until there is no gap between the half dies. For the figure above, the mold position is 0.05 inches. So,we must set the jig position on the machine slightly higher than the actual position to protect it.

3. Speed and pressure of mold preservation

And we need to set suitable speed and pressure for the machine,which is allowed to reach during die protection. In general, we are concerned to slow down the holding of the die during this period and set the pressure low enough so that if something gets in the way of the half die, the die will stop the jig motion and emit a jig alarm.

Don’t forget closing pressure is the most important aspect of die protection Settings!