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Mold Design
When
designing a mold there are many choices that must be made from steel
type to gating systems. Does the part require a 2-plate or 3-plate
mold? Would a hot runner system work best? To maintain dimensional
stability should bubblers be installed in the cooling system? Let PSN
design a mold that is effective and cost efficient. Using state of the
art software PSN can design a mold and complete simulation testing on
how the mold will fill, in order to optimize melt flow. A properly
designed mold can help eliminate costly retooling.
- 2-Plate Mold Advantages - Cost efficient -
Low maintenance
- 3-Plate Mold Advantage -
Flexible gating locations - Automatic degating (separates parts and runners automatically)
- Hot Runner Mold Advantage -
No runners to regrind or dispose
(less material cost per part)
- Stack Mold Advantage -
Doubles molding area
(more parts per cycle)
Steel/Material
Selection
When
designing a mold one must consider the expected tool life, what areas
will wear, and thermal conductivity, to pick the appropriate material.
Steel properties that have to be considered are wear resistance,
corrosion resistance, machinability, compressive strength and thermal
conductivity.
Hot Runner vs Cold Runner Systems
Hot Runner Advantages:
- Less pressure drop
- Less projected area
- Allows center gating on a 2 plate mold
- Reduces cycle time
Cold Runner Advantages:
- Easy color change Lower initial cost
- Less maintenance
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