How is it easy to damage the injection mold in the molding stage

Injection mold refers to the processing of a mold in the form of injection molding, but if this process is not well grasped, it is easy to damage the material; and if the injection mold tools are used for a long time without careful maintenance, it is easy to damage, which will also cause losses to the company, so what are the reasons for the damage?
So, why is the injection mold damaged? We all know that the injection mold, when assembled, does not have much force from the outside, but once installed in the injection molding machine, injection molding, will be subject to various external forces, causing damage to the injection mold, so the injection mold must have enough strength to withstand various external forces.
Generally, the molten resin will flow to the gate, and then the cavity filling will be completed. However, the injection strength must be large enough to make the material flow into the gate. Generally, the pressure will be maintained for about 1s, but it will still have a slight impact on the mold.
In addition, the push rod of the injection mold can also push the shape product under the action of the push plate. If the push and pull of the push rod is not smooth enough, the operator will usually exert more force to complete the action, which also requires that the push rod must have a certain pressure bearing capacity.