Finished relay comprehensive testing relied on manual sampling inspection in the 1970s. In the early 1990s, as relay mass production expanded in the electronics industry, dedicated automatic final testing equipment emerged. Relay final test machines evolved from separate single-performance testing units into all-in-one equipment that completes multiple indicator tests at one station. From the 2000s to early 2020s, boosted by the demand for high-quality electrical components, domestic equipment makers stepped into this field, and independently developed relay final test machines gained widespread application.
The relay finished testing industry experienced three phases: reliance on overseas equipment, domestic technology research and breakthrough, and industrial scale development. Manufacturers around the world have raised stricter requirements for relay delivery testing. Domestic automatic relay final testing equipment output keeps increasing, and customized testing solutions can match different types of finished relays.
Equipment developers keep optimizing testing processes. In recent years, many new patents for relay automatic final testing have been granted, covering synchronous multi-parameter testing, automatic feeding and defective product sorting, which effectively raise testing efficiency and reduce artificial error.
In the future, relay final test machines will develop toward intelligent data recording, higher testing efficiency, multi-model compatible testing, energy saving, and seamless linkage with front-end relay assembly lines.
