Koplas: Insert molding yields one-piece impeller-rotor; plunger system key to quality parts


In a claimed world first, Japanese Tier I parts manufacturers are molding water impellers that feature integrated motor rotors in an insert molding process carried out on vertical presses. These electric-powered impellers employed for motor and cabin cooling are used on hybrid vehicles such as the Prius.

According to machine supplier Sodick (Yokohama, Japan), the company's V-Line plunger system is highly suited to this application given that it prevents the formation of gas voids in the final molded parts. "These voids can be a cause of structural failure," says Koji Maeda, sales director Sodick Korea (Seoul), who was speaking to PlasticsToday at the recent Koplas show in Seoul....
Read more