Heidelberger Druckmaschinen Ag

Heidelberger Druckmaschinen Aktiegesellschaft

Rainer Klenk

Richard Burkhard Mack

Roland Hirth

Carsten Kelm

Erich Michael Zahn

Bernd Herrmann

Udo Lautenklos

Gerd Raasch

Peter Gamperling

Michael Szeidl

Wolfram Hofmann

Bernhard Waltenberger

Uwe Peters

A method for forming an auxiliary stack when a sheet stack is changed in a sheet delivery of a sheet-processing machine includes providing an auxiliary stack support for supporting the auxiliary stack during a non-stop stack change and multiple stop and separator elements disposed outside a stacking area in front of edges of the sheet stack to form a gap in a stream of sheets conveyed by a conveying system and released to fall onto the sheet stack. The sheet stack is lowered to form a gap for the auxiliary stack support, the stop elements for the front edge and the rear edge of the sheet stack are moved into a disengaged stand-by position before the main stack is lowered. For this purpose, the stop elements are equipped with remote-controllable actuating devices that are connected to a control unit. A device for forming an auxiliary stack is also provided.

Method and device for forming an auxiliary stack

In an apparatus for aligning sheets that are deposited on a sheet stack, there are sheet leading edge stops disposed so as to be vertically displaceable by a common leading edge shaft. An auxiliary stack carrier that is to be introduced into the stack region for nonstop operation causes the leading edge shaft or leading edge stops to be raised.

Apparatus for aligning sheets which are deposited on a sheet stack

A delivery for a machine for processing flat printing materials includes a pile-forming station wherein sheets conveyed to the machine in a processing direction are piled, a make-ready station located upline of the pile-forming station in the processing direction and having an insertion opening formed in a side wall thereof for inserting a pile underlay into the make-ready station, and a conveyor by which a pile underlay inserted into the make-ready station is movable into the pile-forming station, a pile underlay carrier disposed in the make-ready station, the pile underlay carrier having a support adjustable between a first level and a second level lower than the first level, the support, at the first level thereof, accommodating the pile underlay inserted into the make-ready station, the support being adjustably movable in a direction to the second level for transferring the pile underlay to the conveyor; and a machine for processing flat printing materials including the delivery.

Delivery for a machine for processing flat printing materials with adjustable pile underlay inserter conveyor

A device for guiding vertically movable sheet pile carriers for receiving thereon sheets of a substantially horizontally oriented, continuous stream of sheets including a pile lifter having a main pile support and an auxiliary pile support displaceable back and forth between a readiness position located outside the sheet stream, and a catching position located inside the sheet stream and, when the main pile is being changed, temporarily carrying, in the form of an auxiliary pile, some of the sheets coming from the sheet stream, includes an auxiliary pile frame embracing the displaceable auxiliary pile support and being guidable, jointly with guiding devices of the auxiliary pile support, in vertically extending guide elements.

Device for guiding vertically movable sheet pile carriers

A device in a sheet delivery for accommodating flat printed products, the device having a lowerable auxiliary sheet stack frame arranged between two side walls of the sheet delivery, includes respective lifting devices to which the auxiliary stack frame, at respective corner locations thereof, is articulatedly connected, a movable auxiliary stack receiving element mounted on and completely surrounded by the auxiliary stack frame, the auxiliary stack frame being of a length in a sheet travel direction substantially equal to twice the length of the auxiliary stack receiving element.

Delivery system for flat products

A hurdle board assembly for separating sheet piles in a delivery of a sheet-fed printing machine includes a hurdle board. A plurality of spacer elements are connected to the hurdle board at locations in the vicinity of the border of one surface of the hurdle board. The spacer elements are respectively movable between a condition wherein they are retracted into the hurdle board and a condition wherein they extend vertically from the hurdle board. Respective prestressing devices are provided for prestressing the spacer elements, respectively, in a direction in the condition wherein the spacer elements, respectively, extend from the hurdle board. Respective locking devices are provided for securing the spacer elements, respectively, in the retracted condition. The locking devices are deactivatable from a side of the hurdle board so as to release the spacer elements.

Hurdle or rack board for sheet-fed printing machines

A device for automatically performing nonstop pile changing in a delivery of a printing press, preferably having a high printing speed, includes a separator sword movable sidewise between two sheets for forming a gap therebetween, and supporting an upper one of the two sheets at a trailing-edge region thereof until an auxiliary pile carrier has reached an inserted position thereof The separator sword cooperates with a restraining or holding device formed as a separator wedge, so that the separator wedge is slidable under the separator sword and firmly holds the upper sheet at the trailing-edge region thereof by suction until the auxiliary pile carrier has been inserted

Device for forming an auxiliary sheet pile during a nonstop pile change

A device for forming a sheet pile in a delivery of a sheet-fed printing press includes jogging plates for jogging edges of the sheet. The jogging plates are disposed perpendicularly to a lateral surface of the sheet pile and are drivable so as to move in a stationary sheet guide and to a sheet stop, respectively. The jogging plates are elastically suspended, without any other guide elements, in at least one of the stationary sheet guides and the sheet stop. An oscillation exciter is connected to each of the jogging plates for respectively oscillating and vibrating the jogging plates independently of a cycle of the delivery.

Device for forming a sheet pile in a delivery of a sheet-fed printing

A device for a format-dependent adjustment of cut-off length in a delivery region of a rotary printing press having a device for nonstop operation, with stops for the trailing edge of the sheets to be delivered, includes a separating band revolving perpendicularly to the sheet transport direction, the separating band being integrated in a frame structure arranged so as to be displaceable in a horizontal direction, the stops for the sheet edge and a sheet-braking device being carried by the frame structure.

Device for automatic format adjustment in a delivery of a rotary

The present invention relates to a drive for distributor rollers in an inking-unit of a rotary printing machine comprising a central gearwheel driven by a printing unit-cylinder, and distributor rollers the drive gears of which are in mesh with the central gearwheel, each of the distributor rollers performing a lateral stroke, and the central gearwheel being provided with an adjusting possibility of varying the timing point of starting the lateral stroke with respect to the front end of the printing plate, and thus influencing the inking of the printing plate according to the respective subject to be printed.

Drive for distributor rollers in an inking unit of a rotary printing

Individual sheets are singled out in a delivery of a sheet-fed rotary printing press. The delivery has a chain delivery with gripper bars extending transversely to the sheet-transport direction. The gripper bars are disposed on revolvingly driven transport chains and carry spaced apart sheet grippers disposed side by side. The sheet grippers grip the leading edges of the sheets and slave them to a main sheet pile. The gripper release is subject to an adjustable control for delayed sheet release, so that selected sheets may be transported beyond the main sheet pile. Revolvingly drivable suction tapes suction-grip the sheets which are released by the grippers with the delay, and they transport those sheets in the transport direction across and beyond the main sheet pile and onto a single sheet depository. The sheet depository is movably disposed in or on the printing-press frame. The suction tapes have upper suction surfaces at a raised position which extend between the sheet grippers. The grippers delay the sheet release until at least a leading region of the respective sheet is located above the suction tapes.

Device for the automatic singling-out of sheets in the delivery of a

Device for removing inspection or specimen copies at rotary cross cutters or deliveries in sheet-fed presses which, at a cutting station, cut a continuously supplied web of material into individual copies subsequently conveyable substantially free of contact and partly mutually overlapping in a given conveying direction in a copy-transport plane to a decelerating station disposed downline from the cutting station, includes at least one swivel cam assigned to the copy-transport plane, the swivel cam being activatable for penetrating the copy-transport plane so as to change the conveying direction of the copies.

Device for removing inspection copies at rotary cross cutters

A device for the controlled removal of pieces of waste material is provided. The device has a non-rotatable cylinder shaft having an outer surface; a cylinder jacket having an inner surface and an outer surface and having at least one through-hole extending between the inner surface and the outer surface of the cylinder jacket, the cylinder jacket rotatable around the cylinder shaft; and sealing strips between the outer surface of the cylinder shaft and the inner surface of the cylinder jacket. The outer surface of the cylinder shaft, the inner surface of the cylinder jacket and the sealing means define a pressure chamber and a vacuum chamber, so that upon rotation of the cylinder jacket around the cylinder sleeve the at through-holes alternately connect with the pressure chamber and the vacuum chamber. The waste pieces are created when a pair of knives disposed on the outer surface of the cylinder jacket cut a moving web.

Device for the controlled removal of pieces of waste material

The invention provides a method and apparatus for continuous sheet delivery. According to the invention, a continuous stream of sheets is separated into a main pile, supported by a removable pallet, and an auxiliary pile, in which sheets are stored while the pallet and the main pile are removed and a new pallet is introduced. An embodiment of the invention includes a sheet supply, a pallet for accepting sheets from the sheet supply to form a main pile, a belt having a widened portion forming an edge for separating the edges of the pile to define an auxiliary pile, an auxiliary pile support, and a main pile. The auxiliary pile is divided from the main pile and supported separately therefrom by the dividing means while the pallet is replaced.

Growing community of inventors

St. Leon-Rot, Germany

Rainer Klenk