Windmoller Holscher

Herbert Lubke

Volker Schroder

Wolfgang Knapheide

Bruno Marquardt

Westermann, Heinz-Georg

Monika Will

Winfried Stascheit

The invention pertains to a doctor device for intaglio printing machines with a doctor blade displaceable relative to the printing cylinder, the working stroke of which is adjustable. In keeping with the invention, a motor-driven swash plate rigidly affixed to the frame actuates the doctor blade along with a displaceable doctor beam.

Doctor device for intaglio printing machines

Doctor blade apparatus for use with a form cylinder of a printing machine has a doctor blade holder which is mounted in a series of slide assemblies spaced along the length of the blade holder so that the holder can be adjusted both in directions parallel to and perpendicular to the cylinder axis thereby providing accurate positioning of the blade on the cylinder.

Doctor blade apparatus

A printing press having an impression cylinder with a bearing at each end an image carrier cylinder and a frame in which both cylinders are positioned. A device is provided for moving the impression cylinder between an engaged printing position cooperating with the image carrier cylinder and a disengaged position and also for producing a larger motion of the impression cylinder for the purpose of replacing the image carrier cylinder. A lead screw is provided for each bearing for lifting and lowering the bearing of the impression cylinder and a thrust piston and cylinder unit for acting on each bearing for urging the impression cylinder towards the image carrier cylinder. A nut engages each lead screw, each nut having a tubular section with a constant external diameter, and a pinion is mounted on each tubular section, and having a hub supported for pinion rotation in a fixed position relative to the frame. The pinion is rotatively locked to the tubular section for rotation and for sliding to a limited extent for maintaining the pinion in mesh with gearing for rotatively driving the pinion during the large motion. Each bearing is compensated by balance the weight of the bearing of parts connected with the bearing and of the impression cylinder.

Device for moving the impression cylinder of a printing press into and

An impression cylinder provided with a replaceable sleevelike impression cylinder shell is movably and releasably mounted in a printing press by a bearing in such a manner that the impression cylinder adjacent to its one stub shaft is adapted to protrude freely from the machine frame and permit replacement of the impression cylinder shell. In order to permit a particularly simple replacement of the impression cylinder shell, the bearings are hinged bearings having bearing shell sections which can be swung off to a position in which they permit the impression cylinder to be swung out in a horizontal plane. The impression cylinder is provided at one end with a stub shaft, which extends beyond the associated hinged bearing and which at the top of its end portion is supportedd by a supporting shell section, which is axially immovably mounted in the machine frame for rotation about a vertical axis. A movable horizontal supporting rail or slideway is provided, which is movable from below into engagement with the impression cylinder, or with a shaft portion connected to the cylinder, at a location between the bearings. The rail or slideway is adapted to be fixed in position, so that the impression cylinder which is held between the supporting shell section and the supporting rail can be pivotally moved out of the opened hinged bearings about the vertical pivot for the supporting shell section.

Hinge and bearing connection for press having replaceable sleevelike

A doctor blade, secured in a pivoting doctor blade holder, of a doctor blade device is able to be engaged with a roll accepting ink, such as the gravure image carrier cylinder of gravure press, at an adjustable angle. In order to reliably and rapidly reset the angle of engagement, the line of engagement and also the engagement thrust of the doctor blade on the fold, and in addition to perform such adjustment even while the press is running, the doctor blade holder is pivotally mounted in elongate, which itself is pivotally mounted at its opposite ends on carrying members, the carrying members are mounted for linear adjustment in unison in the machine frame. The doctor blade holder and the elongate frame are provided with pivotal drive assemblies and the carrying members are provided with linear drives, which an all be operated from a central control device.

Doctor blade device

In an apparatus for moving a push-in truck carrying a printing cylinder into a printing press, the push-in truck is provided with two sliders, or with two guide rollers which are rotatably mounted on vertical axes, and said sliders or rollers are movable into a longitudinal groove, which is formed in a track rail, which is pivotally movable between a swung-out position for receiving the push-in truck and a swung-in position in which the stub shafts of the printing cylinder extend into apertures formed in the side parts of the frame of the printing press in positions in which said stub shafts are adapted to be connected to associated bearings.

Apparatus for moving a push-in truck carrying a printing cylinder into a

A radially deflectable impression cylinder, such as an impression cylinder for cooperation with a rotogravure printing cylinder. The impression cylinder includes a shell which is freely rotatably mounted on a stationary axle by means of annular members carrying a plurality of spaced rolling element bearings. At least an intermediate one of said annular members is radially displaceable in order to deflect the shell of the cylinder so that it assumes a bowed shape when viewed from the side.

Impression cylinder for cooperation with a printing cylinder

In a rotary gravure press in which the journal bearings of the impression cylinder are each connected to a piston rod of the double acting piston-cylinder units serving to raise and lower the impression cylinder, the piston rods extend out of the cylinders and are rotatably but axially undisplaceably mounted in the journal bearings. On the sides opposite to the piston rods, spindles which are screwed into the pistons are provided with unthreaded portions on which worm wheels are secured against rotation but to allow limited axial displacement through a distance corresponding to the stroke between impression throw-on and throw-off.

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Lienen, Germany

Herbert Lubke