Maintenance Technical Description Of Hot Runner Heating Coil
Use a multimeter to check the power of the heating coil and whether the thermocouple is damaged. If you need to replace it, please follow the process below:
1. Remove the hot mold half from the mold.
2. Remove the positioning ring (the other function of the positioning ring is to fix the hot nozzle).
3. Install the lifting hole with M3 screws, remove the heating nozzle, and pay attention that the heating ring cannot be kneaded.
4. Remove the snap ring and the heat shield of the heating ring.
5. Hold the head of the hot nozzle, turn it clockwise and turn and pull the heating ring out to gradually separate from the hot nozzle.
6. When installing new wire, the heating coil should be as close as possible to the main body of the hot nozzle, and the front end of the heating coil should reach the main body of the ring groove at the front end of the inner core of the hot nozzle.
7. Rotate the heating ring clockwise to move it toward the head of the hot nozzle to ensure that the heating wire completely reaches the front end of the hot nozzle. The heating ring should be densely distributed on both ends and sparse in the center.
8. Install the heat shield of the heating ring. If the heat shield is tight, check whether the heating ring is in place.
9. Install the circlip.
10. Detect the standard resistance value of the heating coil and calculate the power (the standard power is engraved on the heating coil), and detect the resistance value of the thermocouple (0 or less resistance).
