Core-forming tool in tube or tubular shape for manufacturing inner contour of hollow body, particularly tube, has universal channel, in which medium is placed

摘要

The core-forming tool (1) has a universal channel (3), in which a medium is placed. The core-forming tool consists of an elastic material. The core-forming tool is formed of successively arranged multiple core pieces (5) in direction of an axis (4), which lies together in an operating condition. The axis is marginally spaced together in a removing condition. The core pieces are connected by an elastically deformed and flexible hollow body (6).