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How to design the exhaust groove of injection mold?
Original: Original | Author: DGMF Mold Clamps | Publish Time: 2020-04-17 | 8332 Views | Share:
During injection molding, there will not be a lot of molten material leaking from the vent hole, because the molten material will cool and solidify at this place to block the channel.
How to design the exhaust groove of injection mold? - DGMF Mold Clamps Co., Ltd
During injection molding, there will not be a lot of molten material leaking from the vent hole, because the molten material will cool and solidify at this place to block the channel. The opening of the exhaust port must not face the operator to prevent accidental injection of molten material and injury. In addition, the matching gap between the ejector rod and the ejector hole, the matching gap between the top block and the stripper plate and the core can also be used for exhaust.
1. The role of the exhaust slot
The role of the exhaust slot has two main points:
When the molten material is injected, the air in the mold cavity is excluded;
Eliminate all kinds of gas generated during the heating process.
The more thin-walled products, the farther away from the gate, the opening of the exhaust slot is particularly important.
In addition, for small parts or precision parts, we must also pay attention to the opening of the exhaust groove, because it can avoid product surface burns and insufficient injection volume, it can also eliminate various defects of the product and reduce mold pollution.