Mold Base Technology

This plate holds the cavity in the mold. Its thickness is normally decided by the “depth” of the part. The runner system and gating are sometimes machined (half) in the surface of the plate. This surface is also the parting line surface and “shut off” (sealing) must be obtained or flash will occur.

This plate holds the cavity in the mold. Its thickness is normally decided by the “depth” of the part. The runner system and gating are sometimes machined (half) in the surface of the plate. This surface is also the parting line surface and “shut off” (sealing) must be obtained or flash will occur.

This plate holds the cavity in the mold base. Its thickness is normally decided by the “depth” of the part. The runner system and gating are sometimes machined (half) in the surface of the plate. This surface is also the parting line surface and “shut off” (sealing) must be obtained or flash will occur.

The primary purpose of the supporting plate is to reinforce the mold during injection. It is actually a thicker plate that will not bows during the injection stage of the molding process. The ejector mechanism (pins) moves though the supporting plate.

The actual ejector plate stands out as the floating plate during the ejector process. Its thickness is determined with the level of pressure necessary to remove the component and the part/mold dimension. This plate furthermore fastens the ejector system (pins or plate) inside the ejector retainer plate.

The ejector bottom plate is adopted in a mold to fix the ejector system (ejection pins, return pins, and so on) on the ejector plate. The retainer plate is head recessed  for every pin. The pin bottoms change to be flush with the back  on the plate and also the ejector plate then fastens straight to the retainer plate. In the course of ejection, the retainer plate “draws” the ejector system (pins) to its original position.

The stripper plate is usually an ejector system employed to aid in component stripping. This plate is mounted on the ejector return pins and actuated traditionally. The plate thickness is determined with the pressure necessary to take away the component. The cavity shape should be precisely machined in to the stripper plate to prevent extreme tool wear and enable the stripper plate to “stay” properly whenever it’s retracted.