springiness

springiness

Elastizität

springiness

Kräuselungelastizität

One aspect of this invention resides broadly in a device for clamping a printing plate on a plate cylinder in a rotary printing press, the plate cylinder having a recess therein for accommodating the device, the clamping device comprising: clamping apparatus for clamping a printing plate to a plate cylinder, the clamping apparatus comprising first clamping apparatus for clamping an angled end of a printing plate, and second clamping apparatus for clamping a non-angled end of a printing plate; the first clamping apparatus and second clamping apparatus at least partially disposed in the recess; the first clamping apparatus comprising a first resiliance, and the second clamping apparatus comprising a second resiliance; the second resiliance being substantially greater than the first resiliance. Another aspect of this invention resides broadly in a device for clamping a printing plate on a plate cylinder in a rotary printing press, the plate cylinder having a recess therein for accommodating the device, the clamping device comprising: clamping apparatus for clamping a printing plate to a plate cylinder, the clamping apparatus comprising first clamping apparatus for clamping an angled end of a printing plate, and second clamping apparatus for clamping a non-angled end of a printing plate; the first clamping apparatus and second clamping apparatus at least partially disposed in the recess; the first clamping apparatus comprising a first resiliance, and the second clamping apparatus comprising a second resiliance; the second resiliance being substantially greater than the first resiliance; the second resiliance providing a springiness for clamping and holding the non-angled end of a printing plate; the clamping apparatus comprising a third clamping apparatus, the third clamping apparatus further comprising a clamping element mounted on a first shaft, the first shaft being disposed within the recess; the clamping apparatus further comprising an apparatus for pivotally mounting the first clamping apparatus and second clamping apparatus to the clamping element; the clamping apparatus further comprising a biasing apparatus, the biasing apparatus located to apply a force to the first clamping apparatus, the second clamping apparatus, and the third clamping apparatus, the biasing apparatus located to direct the force between the first shaft and second shaft; the biasing apparatus comprising a compression spring located between the plate cylinder and the first clamping apparatus, to clamp and tension a printing plate disposed on the plate cylinder. An additional aspect of this invention resides broadly in the device comprising a clamping apparatus having a first clamping apparatus and a second clamping apparatus, the first clamping apparatus comprising a first component part and the second clamping apparatus a second component part.

Eine weitere vorteilhafte Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß zwischen den Spannfedern am Plattenzylinder Spannschrauben angeordnet sind, die an die Obergreifer zum Erhöhen der Klemm- und Spannkraft der Spanneinrichtung anstellbar sind.