DRAWING MACHINE Russian patent published in 2005 - IPC

FIELD: equipment for multiple multi-strand drawing of wire.

SUBSTANCE: drawing machine includes die holders whose number is equal to that of successive drawing operations and number of drawing dies equal to that of drawing strands; pulling apparatuses arranged between drawing die holders and rotation drive unit. Drawing dies are mounted with possibility of rotation they are combined to kinematic groups through gearing. One drawing die of group is joined with rotation drive unit. Gear wheel of gearing includes set of alternating working discs with peripheral teeth and intermediate discs; unit for compressing set of discs. Diameter of intermediate disc of one gear wheel of each pair of gear wheels exceeds diameter of working disc. Diameter of intermediate disc of other gear wheel is less than said diameter. Heat insulation gaskets are periodically placed between discs of disc set. Gearing is multi-step one; number of working discs of set is reduced for next steps as they are spaced from rotation drive unit.

EFFECT: lowered friction at multi-strand drawing, increased useful life period of drawing dies, reduced degree of wire tearing.

3 cl, 5 dwg