How to solve the problem that the Plunger of die casting machine is often stuck?

Die-casting Plunger are often stuck

1. Card Plunger

Inspection and analysis: the punch has no action. Remove the punch and punch handle (hammer handle) assembly, and the plunger rod of the injection material can return, indicating that the punch is stuck.

1) Check whether the Plunger handle (hammer handle) is deformed. After installing the punch, the punch should be able to rotate in the injection chamber (into the barrel), otherwise it is abnormal.

2) Check whether the coaxiality error between the punch and the injection chamber meets the requirements, and whether the diameter of the injection chamber meets the requirements with the inner diameter of the mold (die) sprue sleeve

2. The die-casting punch does not return or the return hammer is not in place

     Inspection and analysis: Remove the punch (hammer) and the connecting components of the punch, and the plunger rod of the injection material can be returned, indicating that the plunger is stuck. If the plunger is removed, the injection piston rod still cannot be returned or returned. Check if the hammer is not in place.

1. Whether the return hammer in-position induction switch is damaged.

2. Whether the hydraulic valves V24, V15, V32 are damaged.

3. Whether the injection hydraulic cylinder is damaged.