Three-tier Stacked Rubber Mold

Three-tier stacked rubber mold is a multi-layer compression mold with three sets of cavities stacked vertically, maximizing cavity count in a single die set. The die is shown with three rows of different-sized cavities, each producing a different rubber component.

Stacked Design

Three die plates are stacked, each containing a row of cavities. When the press closes, all three tiers cure simultaneously. The cavities on each tier may be identical or different, allowing production of several related part types in one press cycle.

Advantages

• Triples cavity count within the same press footprint.

• Produces multiple part sizes in one cycle.

• Efficient use of press tonnage and energy.

• Reduces per-part mold cost.

• Heated platen design ensures all tiers reach cure temperature.

Applications

Three-tier molds produce families of related rubber parts — for example, a complete set of seals for one product line, or multiple sizes of rubber grommets and bushings. The stacked design is common in high-volume rubber molding shops.

Process

Rubber blanks are loaded into each cavity on all three tiers. The mold is placed between press platens, and heat and pressure are applied. After cure, the mold is removed and the tiers separated to extract all parts.

Conclusion

The three-tier stacked rubber mold maximizes output from a single press cycle. The multi-tier design is ideal for high-volume families of small to medium rubber parts.