Abstract: An apparatus for producing book blocks includes a station to dispense a sheet web that moves in longitudinal direction and can be imprinted. A printing station has two cylinders that rotate with a circumferential speed corresponding to the movement speed of the web and function to support in a contacting manner the web with their circumferential surfaces over a specified angle. Contactless printing heads are assigned to each cylinder, arranged at a distance to the circumferential surface of the associated cylinder, and positioned side by side and at least essentially transverse to the circumferential and rotational direction of the associated cylinder. The printing head faces are oriented substantially tangential to the associated cylinder and the center lines of the printing heads are oriented to project substantially radially to the circumferential surface of the associated cylinder.

Abstract: An apparatus for forming a stream of overlapping sheets or stacks of sheets, includes a first transport device to deliver overlap-free sheets or stacks of sheets at a speed v1 along a plane of transport EV. A second transport device carries away the sheets or stacks of sheets at a speed v2 along a plane of transport EH. A decelerating device is arranged to receive the sheets or stacks of sheets at the speed v1 from the first transport device, decelerate the sheets or stacks of sheets to the speed v2 and deliver the decelerated sheets or stacks of sheets to the second transport device to form the stream of overlapping sheets or stacks of sheets. The decelerating device comprises a suction roller unit actuated independently of the transport devices. The suction roller unit comprises a stationary element and an unevenly driven movable element.

Abstract: An unwinding device for wound rolls includes a bearing element, a first support element and a second support element mounted on the bearing element. The first and second support elements are adapted to rotatably hold the wound roll on opposed sides. The first support element and the second support element are movable along the bearing element with respect to one another, such that a distance between the first support element and the second support element changes. The unwinding device also includes a drive mechanism adapted to move the first support element and the second support element along the bearing element. The drive mechanism includes a tensioner movable along the bearing element, and a first engagement member disposed on the first support element. The first engagement member is adapted to releasably lock the first support element to the tensioner.

Abstract: An apparatus for producing book blocks includes a station to dispense a sheet web that moves in longitudinal direction and can be imprinted. A printing station has two cylinders that rotate with a circumferential speed corresponding to the movement speed of the web and function to support in a contacting manner the web with their circumferential surfaces over a specified angle. Contactless printing heads are assigned to each cylinder, arranged at a distance to the circumferential surface of the associated cylinder, and positioned side by side and at least essentially transverse to the circumferential and rotational direction of the associated cylinder. The printing head faces are oriented substantially tangential to the associated cylinder and the center lines of the printing heads are oriented to project substantially radially to the circumferential surface of the associated cylinder.

Abstract: An apparatus for imprinting a sheet web includes two cylinders that rotate with a circumferential speed that corresponds to the speed of the web and which support the web over a specified angle region. Contactless printing heads are arranged side by side and at a distance to the circumferential surface of the associated cylinder and positioned transverse to the rotational direction of the associated cylinder. The printing heads each have a face oriented tangential to the associated cylinder and a center line that is essentially radial to the circumferential surface of the associated cylinder. A guiding device includes first and second guide devices associated with the respective cylinders to guide the web. Each guide device includes at least one pressure roller that fits against the surface of the associated cylinder and an element arranged to pull the web tangentially from the circumferential surface of the associated cylinder along a tangential path section.

Abstract: An apparatus for forming a stream of overlapping sheets or stacks of sheets, includes a first transport device to deliver overlap-free sheets or stacks of sheets at a speed v1 along a plane of transport EV. A second transport device carries away the sheets or stacks of sheets at a speed v2 along a plane of transport EH. A decelerating device is arranged to receive the sheets or stacks of sheets at the speed v1 from the first transport device, decelerate the sheets or stacks of sheets to the speed v2 and deliver the decelerated sheets or stacks of sheets to the second transport device to form the stream of overlapping sheets or stacks of sheets. The decelerating device comprises a suction roller unit actuated independently of the transport devices. The suction roller unit comprises a stationary element and an unevenly driven movable element.

Abstract: A method and a device is provided for forming stacks of flat elements in a stacking region, the flat elements being guided to the stacking region substantially continuously. The flat elements are stacked on a main stack carrier. Upon achieving a finished stack of a predetermined number of flat elements stacked on the main stack carrier, an auxiliary stack carrier is inserted into the stacking region above the finished stack. Subsequent flat elements are then stacked on the auxiliary stack carrier. The finished stack is then removed from the main stack carrier and, subsequently, the main stack carrier is moved below the auxiliary stack carrier. The auxiliary stack carrier is then withdrawn from the stacking region, transferring the subsequent flat elements on the main stack. During or after this withdrawal process, at least an upper portion of the main stack carrier is moved substantially opposite the direction of withdrawal of the auxiliary stack carrier.

Abstract: An unwinding device for wound rolls includes a bearing element, a first support element and a second support element mounted on the bearing element. The first and second support elements are adapted to rotatably hold the wound roll on opposed sides. The first support element and the second support element are movable along the bearing element with respect to one another, such that a distance between the first support element and the second support element changes. The unwinding device also includes a drive mechanism adapted to move the first support element and the second support element along the bearing element. The drive mechanism includes a tensioner movable along the bearing element, and a first engagement member disposed on the first support element. The first engagement member is adapted to releasably lock the first support element to the tensioner.

Abstract: A measuring device and measuring method are provided for testing the cut quality of a sheet. The measuring device is provided with a transparent scanning substrate for holding the sheet, a scanning device with a scanning window, and a cover for covering the sheet held by the scanning substrate, wherein the scanning window overlaps the sheet, forming edge regions, and the cover has different reflection properties from the sheet for producing a high-contrast scanned image of the sheet and of the edge regions between the sheet and the scanning window. The measuring method includes positioning the sheet on a transparent scanning substrate, covering the sheet with a cover, and scanning the sheet with a scanning device, wherein the scanning device scans in the region of a scanning window which encompasses both the sheet and edge regions surrounding the sheet, and differences in contrast between the sheet and the edge regions are detected.

Abstract: A method and a device is provided for forming stacks of flat elements in a stacking region, the flat elements being guided to the stacking region substantially continuously. The flat elements are stacked on a main stack carrier. Upon achieving a finished stack of a predetermined number of flat elements stacked on the main stack carrier, an auxiliary stack carrier is inserted into the stacking region above the finished stack. Subsequent flat elements are then stacked on the auxiliary stack carrier. The finished stack is then removed from the main stack carrier and, subsequently, the main stack carrier is moved below the auxiliary stack carrier. The auxiliary stack carrier is then withdrawn from the stacking region, transferring the subsequent flat elements on the main stack. During or after this withdrawal process, at least an upper portion of the main stack carrier is moved substantially opposite the direction of withdrawal of the auxiliary stack carrier.

Abstract: The invention relates to a method, an arrangement and an apparatus for conveying objects transversely to their incoming transport direction. In known apparatuses there is a possibility of either removing all the objects in one direction or the other. To a limited extent known apparatuses also allow a division of a string formed from several objects. However, a disadvantage is that the distribution of the objects, in other words the division of a string formed from several objects, e.g. a ream string formed from fourteen reams, to packing machines located opposite one another is possible only to a limited extent. It can also take place only when the machine has been shut down.

Abstract: The present invention concerns a measuring device for testing the cut quality of a sheet as well as a measuring method for testing the cut quality of a sheet, with which the cut quality can be tested reliably by the fact that the measuring device is provided with a transparent scanning substrate 3 comprising a stop 1 for a sheet for holding the sheet 4, a scanning device 15 with a scanning window 14 and a cover 21 for covering the sheet 4 held by the scanning substrate 3, wherein the scanning window 14 overlaps the sheet 4, forming edge surfaces 10, 11, 12, 13, and the cover 21 has different reflection properties from the sheet 4 for producing a high-contrast scanned image of the sheet 4 and of the edge surfaces 10, 11, 12, 13 between the sheet 4 and the scanning window 14, or by the fact that with the measuring method the sheet 4 is positioned on a transparent scanning substrate 3 with a stop 1, covered with a cover 21 and scanned with a scanning device 15, wherein the scanning device 15 scans in the region

Abstract: Apparatus and method for conveying objects generally transversely to a direction of initial delivery. The apparatus uses two conveying arrangements which can move independently of one another. Each of the two conveying arrangements have a transport region and a return region. A dividing gap is arranged between the two conveying arrangements. A sliding mechanism can be positioned to at least one of adjust a length of the transport regions and adjust a length of the return regions. An equalizing mechanism can be positioned to at least one of compensate for the change in the return regions and compensate for the change in the transport regions. The sliding mechanism and the equalizing mechanism are separate mechanisms. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: The invention concerns an apparatus for the automated and simultaneous preparation and changing of at least two rolls of paper webs or the like for a downstream garniture cutter, including at least two roll stations arranged one behind the other, wherein each roll station has two carriers with two carrying arms movable up and down and movable horizontally with elements for receiving a full roll, holding the roll which is in production and discharging the residual roll, wherein all the roll stations have a common transfer track which is arranged above the roll stations and by means of which the unrolled paper webs can be delivered one above the other in the direction of transport to the downstream garniture cutter, which is distinguished by the fact that a common transport element is provided a) for delivery of full rolls to the roll stations and b) for discharge of residual rolls from the roll stations, the transport element being constructed in such a way that the full rolls and residual rolls are moved tran

Abstract: A stream of successive sheets of paper, foil or the like is converted into a series of piles at a stacking station where successive sheets are caused to descend onto a pallet which is adjacent a monitoring device serving to transmit signals denoting the levels of successive uppermost sheets of a growing pile. Such signals are processed by a unit which controls one or more valves in a pneumatic elevator for the discharge end of the endless flexible conveyor which supplies successive sheets to the stacking station. The elevator ensures that the distance between the discharge end of the conveyor and the uppermost sheets of the growing pile remains within a preselected range. This contributes to the accuracy of stacking of sheets on their pallet.

Abstract: A conveying arrangement for sheet quires, includes at least two successively arranged conveying devices of which a front conveying device as seen in a conveying direction has a lower speed than a rear conveying device. At least one ionization device electrostatically charges the sheet quires. An area of the front conveying device includes a suction device for administering suction air to the sheet quires in at least one region of the sheet quires.

Abstract: A support for a material web for use with a longitudinal cutting device for cutting the material web, includes a support shaft having an axis of rotation. At least one bearing mechanism positions the at least one support shaft, wherein the at least one bearing mechanism has an axis of rotation outside of the axis of rotation of the support shaft.

Abstract: Abstract of the Disclosure A cutting tool for belts has a zigzag cutting structure with at least three cutting edges. Respectively two adjacent and transverse cutting edges are joined at a common end.

Abstract: A conveying arrangement for sheet quires includes successively arranged conveying devices of which a downstream conveying device as seen in a conveying direction has a lower speed than an upstream conveying device and at least one ionization device for electrostatic charging of the sheet quires. The downstream conveying device includes a suction device for administering suction air to the sheet quires at stationary suction openings.

Abstract: The invention relates to a method, an arrangement and an apparatus for conveying objects transversely to their incoming transport direction. In known apparatuses there is a possibility of either removing all the objects in one direction or the other. To a limited extent known apparatuses also allow a division of a string formed from several objects. However, a disadvantage is that the distribution of the objects, in other words the division of a string formed from several objects, e.g. a ream string formed from fourteen reams, to packing machines located opposite one another is possible only to a limited extent. It can also take place only when the machine has been shut down.