4 Points For Injection Molds Installation

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4 Points For Injection Molds Installation
1. Preparation before installation
Confirm the cooling water channel. The depth of the screw into the board is 1.5-1.8 times the
diameter of the screw. Insufficient screwing may cause slippery teeth and there is a risk of the
injection mold falling. Confirm whether the operation personnel, materials, tools, documents,
equipment auxiliary equipment, etc. required for production are complete.
2. The method of hanging mold
When the hanging injection mold is not level, the mold cavity before and after the installed mold
will have different steps. For the production of precision products, there will be poor
concentricity, poor steps, poor tooth accuracy, and poor distance.
When installing the mold, we must pay attention to this problem. When the hanging mold goes in
and closes to a small position that can be pushed by the hand, the mold clamping is stopped.
Loosen and tighten the lifting ring, the front mold is the reference (because the front mold is
fixed by the positioning ring), look at the rear mold part, when the level of the front mold is
optimal, the mold cavity position coincides, continue to close the mold to completion, but do not
start high pressure it is good. (Do not raise the high pressure for the first time when the upper
mold is closed, and the high pressure can only be raised after confirming that the mold clamping
can be normal).
3. The method of screwing
For low-temperature molds with a mold temperature below 50 degrees, the molds can be
clamped to a high-pressure start. Tighten the screws diagonally between the front and back
molds. After 8 screws are completed, when the mold temperature is above 50 degrees, do not
tighten the screws before the mold temperature reaches. After the mold temperature is reached,

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start at high pressure and tighten the screws diagonally.
The mold material will swell with increasing temperature, and the volume will increase. It is more
obvious when the mold temperature is high. If the screws are tightened before the temperature
rises, it will have a certain impact on the mold life and mold accuracy.
4. Use of attachments
When the thickness of the mold is not enough, it is necessary to install a template. When the
mold temperature is high, it is better to install a heat insulation plate between the machine board
and the mold. Whether it is a template or a heat insulation board, its flatness must be as small as
possible.
If the flatness is large, the front and back molds of the mold are not parallel, and there is a
difference after high-pressure closing, which affects the quality of the product. When the mold
temperature reaches the set value, check the actual temperature of the mold, and adjust the
mold thickness once.