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Product News - Mold Spring Eliminates Need For Die Springs
December 1, 1998
2 Min Read
Mold Spring Eliminates Need For Die Springs
The Return-Rite mold spring is said to be the first of its kind and is engineered for mold bases and the safe and efficient operation of ejector systems.
The manufacturer says that, unlike the die springs that are commonly used with mold bases, the mold spring offers positive return action and is uniquely coiled for specific force ratings to maintain proper load retention.
In addition, they are smaller and more compact so they reportedly take up less mold cavity area, leaving more room for tooling. And previously relocated return pin locations can now be standard without creating wall breakage, unsafe pinch points or allowing debris entry, according to the manufacturer.
Standard mold bases can now be ordered without facing the extra delivery time and costs of custom machining required when die springs are used. Purchasing a larger mold base to allow more space from the edges, because of the breakage threat, is also now unnecessary.
Return-Rite mold springs are made of chrome silicon and are designed for long-lasting, trouble-free use. They range in size (free length) from 3 to 7.5 in. and can be used with mold sizes from 0808 to 2435. Prices start at $5.10.
A mold spring selection guide is available from the manufacturer. It lets processors determine the appropriate spring length by allowing for stroke length plus 0.100 in. preload plus 25% deflection for optimum life (40% maximum deflection). For more information and to receive the guide, see our Key Contact/Company Directory.
Superior Die Set Corp.
Oak Creek, WI
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