1. Preparation before installation
Confirm the cooling water circuit, and the depth of screw insertion into the machine board is 1.5-1.8 times the diameter of the screw. If not screwed in enough, it is easy for the teeth to slip and there is a risk of the mold falling. Confirm whether the required personnel, materials, tools, documents, equipment and auxiliary machinery for production are complete.
2. Method of hanging formwork
When the hanging mold is not level, there will be different segment differences between the front and rear model cavities of the installed mold. For precision products, there will be phenomena such as poor concentricity, segment differences, tooth shape accuracy, and distance.
When installing the mold, we must pay attention to this issue. When the hanging mold is in place and can be pushed to a smaller position by hand, stop the mold closing. Loosen and tighten the lifting ring with the front mold as the reference (because the front mold is fixed with a positioning ring). When the rear mold is viewed and the level is the best with the front mold, the mold cavity position matches. Continue to close the mold until it is completed, but it is better not to start the high pressure. (The first time the upper mold is closed, do not apply high voltage until it is confirmed that the mold can be closed normally.).
3. Method of screwing
For molds with a mold temperature below 50 degrees Celsius, when the mold can be closed and started under high pressure, tighten the screws diagonally on the front and rear molds. After 8 screws are tightened, do not tighten the screws too tightly before the mold temperature reaches 50 degrees Celsius. After the mold temperature reaches, start under high pressure and tighten the screws diagonally.
The mold material will swell and increase in volume as the temperature increases. When the mold temperature is high, it becomes more obvious. If the screws are tightened before heating up, it will have a certain impact on the mold life and mold accuracy.
4. Use of accessories
When the thickness of the mold is not enough, it is necessary to install a template. When the mold temperature is high, it is best to install an insulation board between the machine board and the mold. Whether it is a template or 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 still a difference after high-pressure closure, which affects product quality. After the mold temperature reaches the set value, check the actual temperature of the mold and make a mold thickness adjustment.
