DEVICE FOR ROUNDING-OFF EXPANDED GRAPHITE BAND ON EDGE Russian patent published in 2003 - IPC

FIELD: sealing facilities. SUBSTANCE: device has base- mounted expanded-graphite band rounding-off unit, drive for rounding- off unit shafts, expanded-graphite band guide, band reeling unit, and band winding unit kinematically coupled with drive of rounding-off unit shafts, as well as synchronizing unit whose input shaft is coupled with shaft drive and output shafts, with shafts of extended-graphite band rounding-off unit. Device also has table with slots, at least one template with holes which is fitted on table pins, movable supports disposed in table slots for displacement, turning, and locking template in position on table. Rounding-off unit is made in the form of two kinematically intercoupled shafts disposed in case, their extensions carrying pair of smooth cylindrical clamping bushes. Rounding-off unit case is made of basemounted fixed bottom part accommodating stationary shaft and movable top part accommodating shaft offset relative to stationary one. Top movable part is built of two housings for its shaft bearing supports installed either for simultaneous displacement relative to fixed part of rounding-off unit case or for independent displacement relative to each other by means of facility affording parallel displacement of one shaft relative to other and for its setting at certain angle to this shaft. This facility is built of two differential screws each having two different-pitch helical sections, Z-shaped clamp secured on shaft bearing support housing, and nuts engaged by respective helical sections of differential shafts, two nuts being locked on horizontal sections of clamp, one nut, on bearing support housing, and one more nut, on fixed part of rounding-off unit case. EFFECT: improved reliability of sealing. 13 cl, 14 dwg