Die closing unit for injection molding machine with molding die having multiple transfer sections

US3973888A · kind A · utility

Inventor

• Karl Hehl · Usedom, DE

Key dates

• Filing date: May 6, 1975
• Grant date: Aug 10, 1976
• Expiry date: May 6, 1995

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C2045/4068
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A die closing unit for injection molding machines producing articles with embedded insert parts, where the injection molding die includes several identical transfer sections which are movable between a closing station in alignment with the other die sections and a loading station in which the insert parts are placed into the transfer section of the die. A vertically movable die carrier, positioned just below the closing station, receives a transfer section of the die from a transfer station, as the transfer section is shifted horizontally into the closing station in a first embodiment, or lifted vertically into the closing station in a second embodiment. In each case, the transfer section thereby becomes independent of the transfer platen which moves the transfer sections between the transfer and loading stations.