1. Preparation before installation
Check the cooling water circuit, and the depth of screw screwing into the machine plate is 1.5-1.8 times the diameter of the screw. If you screw in insufficiently, it is easy to slip teeth and there is a risk that the mold will fall. Confirm whether the operators, materials, tools, documents, equipment auxiliaries, etc. required for production are complete.
2. The method of hanging the mold
When the hanging mold is not horizontal, there will be different segments of the model cavity before and after the installed mold, and for the production of precision products, there will be poor concentricity, poor segment difference, poor tooth shape accuracy, poor distance and other phenomena.
When installing the mold, we must pay attention to this problem, and stop the mold closing when the hanging mold enters and closes to a small position that can be pushed by the hand. Loosen and tighten the lifting ring, the previous mold is the reference (because the front mold is fixed by a positioning ring), look at the rear mold part, when the level of the front mold is very good, the mold cavity position is consistent, continue to close the mold until completion, but do not start the high pressure is better. (The first clamping of the upper mold must not raise high pressure, and the high pressure can be raised only after confirming that the mold closing can be normal).
3. Screwing method
Low temperature is below 50 degrees mold temperature, can be closed to high pressure start, front and rear mold diagonal tightening screws, 8 screws can be screwed, more than 50 degrees mold temperature, the screws should not be tightened too tightly before the mold temperature arrives, wait for the mold temperature to reach and then start at high pressure, tighten the screws diagonally.
The mold material expands and increases in volume as the temperature increases. It is more obvious when the mold temperature is high, if the screws are tightened before heating up, it has a certain impact on the mold life and its mold accuracy.
4. Use of attached materials
When the thickness of the mold is not enough, it is necessary to install a template. When the mold temperature is high, it is recommended to install a heat insulation board between the machine plate and the mold. Whether it is a template or a heat insulation board, its flatness must be as small as possible.
If its flatness is large, the front and rear molds of the mold are not parallel, and there is a difference after high pressure closing, which affects product quality. When the mold temperature reaches the set value, check the actual temperature of the mold and make a mold thickness adjustment.
