Injection Molding with Wire Cutting

Injection Molding with Wire Cutting

Insert Molding is yet another part of the “Total Plastic Mold Solutions” offered by Hymolding. Insert Molding is a special injection molding process where thermoplastic or thermoset materials are molded around another component, typically a metal insert, contact or tube.

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Injection Molding With Wire Cutting

Insert Molding is yet another part of the “Total Plastic Mold Solutions” offered by Hymolding. Insert Molding is a special injection molding process where thermoplastic or thermoset materials are molded around another component, typically a metal insert, contact or tube. Material injected into the cavity captures exposed features of the inserted component creating an integrated assembly with a strong mechanical bond. This process is used extensively in electrical connector molding applications.

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Because the WEDM operates somewhat like a very accurate band saw, the wire must pass through the workpiece in order to do any cutting. Since mold cavities are, by nature, not able to be machined using a wire cut EDM, the machines were largely used for tool-and-die making, where it excelled.

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Mold components for Injection Molding With Wire Cutting

Nevertheless, within a few years, electrodes, core inserts, insert pockets, ejector pin holes, dowel pin holes, slides, gibs and many other components were manufactured on a WEDM. The ability to wire ejector and core pin holes has proven to be especially useful. This helps eliminate most lapping and honing of the holes to achieve a proper fit. Another benefit is that the holes can be finished after heat-treat, unlike the old method of drilling and reaming before heat-treat.

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