Injection moulding method for optional manufacturing of moulded parts with or without a breakthrough

US9034226B2 · kind B2 · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Joachim Betz · Frankfurt am Main, DE
• Norbert Gerstner · Bolheim, DE

Key dates

• Filing date: Sep 15, 2011
• Grant date: May 19, 2015
• Expiry date: Sep 3, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C45/376
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An injection-molding method for selectively manufacturing molded parts with and without a breakthrough is disclosed. A molded part with a breakthrough is manufactured by positioning a mold core in a mold cavity, whereas a molded part without breakthrough is manufactured by removing the mold core at least partly from the mold cavity. The mold cavity delimited by a nozzle-side mold platen and an ejector-side mold platen. The mold core is movable relative to at least one of the mold platens, in particularly the nozzle-side mold platen, in an advance direction, where the mold core is closer to the nozzle-side mold platen and an opposite withdrawal direction.At least one protective measure is provided for protecting the inner surface facing the mold cavity of the respective mold platen, in particularly the nozzle-side mold platen, from adverse mechanical effects during movement of the mold core in the advance direction.