Molding tool for e.g. switch box, for electrical installation in wall, has ring segment arranged with near to ring on same side of plate, where outer radius of section of ring segment is matched to half diameter of hollow wall box

摘要

The molding tool has a ring (3) whose section of diameter is matched with diameter of a hollow wall box. Another ring (4) is arranged on an opposite side of a plate (1) and concentric to an opening (6), where outer diameter of a section of the latter ring is matched to a diameter of the hollow wall box. Outer sides of the rings are conical in sections. A ring segment (5) is arranged with near to the latter ring on a same side of the plate, where outer radius of a section of the ring segment is matched to a half diameter of the hollow wall box.