SHEET MATERIAL CORRUGATOR Russian patent published in 2006 - IPC B29C59/00 B21D13/02 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to devices for corrugating sheet material by bending and it can be used in production of light filler for multilayer panels, filter elements and packing material. Proposed device contains forming mandrel consisting of flat forming members connected to each other by means to tight cloth to form hinge joints at edges of forming members, transforming device and vacuum bag. Forming mandrel is of equilibrium relief make, and its hinge joints are made of elastically deformable material to change position of forming members in space owing to spring to provide transformation of forming mandrel together with blank from stretched flat state of forming mandrel into its intermediate equilibrium relief state. Said transforming device is made to provide stretching of mandrel from its equilibrium relief state into flat state and transformation of forming mandrel into maximum compressed state at application of compression forces to its edges in horizontal direction.

EFFECT: enlarged operating capabilities of device, improved quality of formed articles of material with elastic characteristics at flexing.

2 cl, 4 dwg