APPARATUS FOR NON-STOP CROSS CUTTING OF CORRUGATED BOARD Russian patent published in 2005 - IPC

FIELD: mechanisms and processes for cutting corrugated cardboard.

SUBSTANCE: apparatus includes framework, drive unit, drum, cutting mechanism with movable cutter, mechanism for fixing cutter blade relative to drum and accumulator. Apparatus also includes mechanism for changing length of blanks, unit for fixing its position, blank length indicator. Mechanism for changing length of corrugated cardboard blanks is provided with screw gage whose nut having control knob is jointly secured to framework. Screw of said mechanism is kinematically coupled with two-arm lever mounted with possibility of angle rocking in journal of drum shaft. One arm of lever is jointly coupled with blank length indicator; distal end of its other arm has pivot for mounting driven gear wheel and crank. Said gear wheel engages with driving gear wheel mounted on end of drum. Crank is provided with roller mounted in connecting link of mechanism for converting uniform rotation to intermittent one. Such mechanism includes driving pinion mounted in end of shaft of cutting mechanism and mutually opposite drive members mounted on platform and cyclically engaging with driving pinion. Said platform is mounted on upper ends of pair of parallel tie rods that may perform reciprocation motion in guide and are spring-loaded relative to said guide. The last is mounted with possibility of angular rocking on end of shaft of cutting mechanism near gear wheel. Lower parts of tie rods are arranged with possibility of fixing their position in connecting link of mechanism for converting uniform rotation to intermittent one. In other end of shaft of cutting mechanism are mounted: member for fixing intermediate positions in the form of braking drum secured to framework and pair of mutually spring-loaded and mounted one opposite to other braking shoes with friction cover plates. Braking shoes are adjoined to inner cylindrical surface of braking drum. Mean portions of braking shoes are joined by means of tie rods with two-arm lever mounted in end of shaft of cutting mechanism. In mean part of said shaft along the same axis hollow shaft of cutter holder is arranged, both shafts are mutually joined through bearing assemblies, brackets and set of elastic members placed between shafts. Said shafts are also joined by means of bracket of mechanism (two-arm lever) for fixing cutter blade relative to drum. Rocking axle of mechanism for fixing cutter blade is mounted in bracket of hollow shaft. One end of two-arm lever is joined with tie rod

for coupling with lever of shaft, other distal end of two-arm lever is provided with roller that cyclically engages with stop secured to bracket of framework.

EFFECT: enhanced efficiency, operational reliability, simplified design, lowered labor consumption for maintenance and adjustment, reduced energy consumption, increased useful life period.

5 cl, 31 dwg, 3 tbl