Koenig & Bauer-Aktiengesellschaft

Albert-Frankenthal Ag

Holger Ratz

Michael Held

Rudolf St&auml;b

Gerd Weiler

Markus Wilhelm Decker

Christof Horst Höger

Klaus Friederich

Sebastian Alois Prüm

Rudolf Stäb

Christof Horst HÖGER

An inclined position of a product, leaving a nip between two folding rollers of a longitudinal folding machine, is corrected. The product is pressed into the nip between the rollers by a folding blade that can be moved up and down relative to a folding table. The product thus leaves the nip between the rollers and is transported in a direction of transport. The time of passage of a leading or a trailing edge of a product is detected at two measurement points which are spaced apart from each other and which are arranged transversely to the direction of transport of the product to be folded. Based on the times of passage that are detected by the two measurement points, and on commutation and/or data processing techniques, a deviation between a time offset detected during the passage of the corresponding product edge at the two measurement points, and a nominal time offset, is determined and analyzed. In the event that the deviation exceeds at least a tolerance range, a measure is initiated, by the use of a control device, in order to act against the deviation. The measure that is to be taken is based on retaining the product to a greater or lesser extent when the product is passing the folding rollers and/or in the provision of more or less friction between the braking elements and the product.

Method for correcting a skewed position of a product exiting a folding roller gap between two folding rollers of a longitudinal folding apparatus, and a longitudinal folding apparatus

A longitudinal folding machine comprises a folding blade and a folding table. The folding blade is driven with a cyclical frequency relative to one or more elements of a web-processing machine, or relative to a flow of incoming products. The entry of a leading edge of products is detected at a first measurement point. A relative phase position between the movement of the folding blade and the phase position of the elements and/or the phase position of the flow of products is modified by one of a control and a regulation device to adjust a contact point of the folding blade with the products to be folded. The relative phase position is modified such that the leading edges of the products to be folded are maintained at a distance from the measurement point on the delivery route.

Method for operating a longitudinal folding apparatus having a folding blade and a folding table, and longitudinal folding apparatus

A web is fed into a sheet severer prior to its entry into a subsequent processing stage. The sheets, which have been severed from the web are then cut into required product sections in a cross-cutter which is associated with this subsequent processing stage. In order to achieve an accurately registered severing process, using the sheet severer, it is triggered by a signal which represents the phase position of the cross-cutter. The sheet severer is thus phase-correlated in relation to the phase position of the cross-cutter.

Method and devices for severing sheets from and/or feeding a web into a subsequent processing stage

A system comprises alternative processing sections for use in the further processing of products. A separator, at which a transport section is divided into several alternative transport sections for the further processing of products in processing stages, is provided. A sensor, that detects the phasing of the products, is located upstream of the separator. A request from the sensor acts on a drive which actuates the separator through a control device. A further sensor, which detects the product phasing, is located on each of the at least two transport sections. This further sensor is connected to a drive for the processing stage served by respective ones of the separate transport sections. The drive of each such processing stage is controlled independently of the drive for the respective transport section by a suitable control unit which takes into consideration the detected product phasing for the associated transport section.

Longitudinal folding device

A folding apparatus includes at least a first folding cylinder and a second, folding jaw cylinder. A third measuring cylinder is also provided. The measuring cylinder is usable to cut product sections or signatures of a determined length L from an endless web. The first cylinder is embodied, in one embodiment, as an engaging cylinder, and as a second embodiment as a puncture cylinder. In both embodiments, the product section or signatures which are produced, have the same length.

Folding apparatus

A puncture or gripper cylinder is provided with at least one puncture strip that is provided with gripper pins or point needles. These pins are extendable from the cylinder to puncture and to grip a signature. At least one deflector is carried on the puncture cylinder and is extendable and retractable with respect to a surface of the cylinder. The deflector, when it is extended at least temporarily shields the signature from subsequent pins.

Puncture cylinder provided with at least one puncture strip

A device that is usable for delivering printed products includes two bucket or paddle wheels that can rotate about two different axes of rotation. Each bucket or paddle wheel includes a plurality of scoop-type elements that can receive printed products from a first or a second product flow. A gripper chain is guided around the two different axes of rotation. Grippers are arranged on the gripper chain and can grip and printed products received in the scoop-type element to thereby remove the product from the scoop. At least one device that will open the grippers, for release of the printed products held by the grippers, is arranged along the path of travel of the gripper chain.

Device for delivering printed products and machine and method for processing printed products

A clamping claw assembly is secured to an endless transport device, such as a chain conveyor. A fixed clamping jaw is engaged by a movable clamping jaw to secure a product placed between the two. The movable clamping jaw is carried by a lever arm which is movable by an actuating lever. The actuating lever is biased by a tension spring between stable open and closed positions, through a dead center position. The movable clamping jaw is in a locked condition when it is in its closed position due to the force applied by the tension spring.

Clamping claw for an endless conveyer

A displaceable conveyor is used to convey selected printed products to different destination points. A reversing device is positioned intermediate the different destination points and a rigid guide track. A partial guide path connects the reversing device with the rigid guide track.

Conveyor

Printed products are guided from an infeed to a delivery belt by a plurality of partially overlapping paddle blades. The paddle blades are secured to an endless carrier such as a chain or a toothed belt. The printed products are deposited on the delivery belt in a smooth, gentle manner as they slip out of the pockets defined by the adjacent overlapping paddles.

Device for guiding printing products

Folded signatures are delivered to a paddle wheel and then are transported to a plurality of distribution points by a gripper chain with a plurality of grippers. A controllable switching unit is provided at each distribution point in the form of a rotatable cam disk with switching cams. The rotatable cam disk at each distribution point is caused to rotate by an individual motor at a controlled speed and time. The speed of rotation of each cam disk can be greater than the speed of travel of the gripper chain so that the point of release of each signature can be accurately controlled.

Device for conveying folded signatures

A device is used to transfer printed products from the paddle wheel pockets of a paddle wheel or a delivery fan. A gripper chain carries a plurality of grippers which remove the printed products from the pockets without damaging them. A gripper chain drive wheel and the paddle wheel or wheels have a common axis of rotation but are driven separately from each other.

Coaxial paddle wheel fan and gripper conveyor sprocket with independent driving means for each

An adjustable cutting knife cylinder in a folder has one or more cutting blades or knives supported at the periphery of a cylinder body. Each blade or knife is adjustable both in a radial and in a circumferential direction. Separate adjusting assemblies are utilized to effect the radial and circumferential movements of the blade or blades.

Growing community of inventors

Frankenthal, Germany

Holger Ratz