Abstract: A machine for inkjet printing three-dimensional objects, for example gas-filled balls, includes an apparatus having an inkjet print head for inkjet printing an object, an apparatus having at least one sucker for holding the object and an apparatus having a first drive and a second drive for rotating the object about two rotational axes which are different from one another.

Abstract: A machine for inkjet printing three-dimensional objects, for example gas-filled balls, includes an apparatus having an inkjet print head for inkjet printing an object, an apparatus having at least one sucker for holding the object and an apparatus having a first drive and a second drive for rotating the object about two rotational axes which are different from one another.

Abstract: An apparatus for removing sheets from a transport path of a sheet-processing machine for depositing the sheets onto an auxiliary stack, includes a delivery drum for removing the sheets from the transport path upstream of a main stack, as viewed in the transport direction, and depositing the sheets onto an auxiliary stack in a manner which is retarded by using a suction belt transport system and a suction belt brake system which is associated with the latter. The suction belt transport system and the suction belt brake system are disposed above the auxiliary stack.

Abstract: A powdering device for a printing press includes a metering roller and a manifold. A plurality of injectors are provided downstream of the manifold in a conveying direction of the powder. The powdering device is operable in accordance with a method in which a total powder stream is subdivided into partial powder streams that are subsequently separately mixed with compressed air to create powder/air streams.

Abstract: A method for adjusting a pressing force of a flat-bed die-cutting and/or stamping/embossing machine having at least one die-cutting and/or embossing/stamping tool for processing a flat printing substrate, includes supplying tool data describing an individual structure of a die-cutting and/or stamping/embossing tool of a plurality of tool parts, reading specific force data out of a database, the specific force data assigning a specific pressing force to a respective tool part, calculating a target pressing force at least from the tool data and the specific force data adjusting the pressing force of the flat-bed die-cutting and/or stamping/embossing machine to the target pressing force. The adjustment of the pressing force is advantageously simplified to a considerable extent and reduces the error-proneness and the time required for setting up the flat-bed die-cutting and/or stamping/embossing machine. A machine for implementing the method is also provided.

Abstract: A powdering device for a printing press includes a metering roller and a manifold. A plurality of injectors are provided downstream of the manifold in a conveying direction of the powder. The powdering device is operable in accordance with a method in which a total powder stream is subdivided into partial powder streams that are subsequently separately mixed with compressed air to create powder/air streams.

Abstract: In an apparatus for correcting a position of a sheet which is transported in the grip of grippers on a feed drum of a sheet processing machine, in particular a sheetfed rotary printing press, provision is made for a gripper device of the drum to be mounted in independently rotatable arranged supports and for it to be possible for each support to be driven by a step-up gear mechanism.

Abstract: In a delivery of a sheet-processing machine, in particular a printing press, provision is made for chain gripper systems for holding the sheets to be transported at the leading and trailing edges thereof. The holding devices are configured such that they can be displaced relative to one another for the purpose of format adjustment. The chain gripper system has a sprocket drive shaft and a sprocket deflection shaft for the chains of the chain gripper system. Here, provision is made for both the sprocket drive shaft and the sprocket deflection shaft to have a clutch.

Abstract: In a delivery of a sheet-processing machine, in particular a printing press, provision is made for chain gripper systems for holding the sheets to be transported at the leading and trailing edges thereof. The holding devices are configured such that they can be displaced relative to one another for the purpose of format adjustment. The chain gripper system has a sprocket drive shaft and a sprocket deflection shaft for the chains of the chain gripper system. Here, provision is made for both the sprocket drive shaft and the sprocket deflection shaft to have a clutch.

Abstract: In an apparatus for correcting a position of a sheet which is transported in the grip of grippers on a feed drum of a sheet processing machine, in particular a sheetfed rotary printing press, provision is made for a gripper device of the drum to be mounted in independently rotatable arranged supports and for it to be possible for each support to be driven by a step-up gear mechanism.

Abstract: A sheet delivery has an endless conveyor for conveying printed sheets and a secondary gripper with a gripper bar for holding printed sheets received at their trailing edges from the endless conveyor, to be deposited on a delivery stack. A transmission generates an annular circulatory movement of the gripper bar. A first balance weight and a second balance weight are provided for compensating for interference torques and are braced for rotation in relation to one another by a spring.

Abstract: An apparatus for transporting sheets to or in a sheet-processing machine includes a gripper device having at least one gripper with a gripper housing and a gripper pad. The gripper is actuatable by a pivoting movement of a gripper shaft. The gripper housing and the gripper pad are pivotably disposed on the gripper shaft and are jointly pivotable about an axis of the gripper shaft under a prescribed periphery.

Abstract: A sheet delivery has an endless conveyor for conveying printed sheets, and a secondary gripper with a gripper bar that receives the printed sheets from the conveyor at their trailing edges and deposits them on a delivery stack. A transmission generates an annular circulatory movement of the gripper bar. The endless conveyor has lower forward strands, running toward the delivery stack, and upper return strands, running away from the delivery stack. The transmission has a first control-cam pair on one side of the endless conveyor and a second control-cam pair on the other side of the endless conveyor and the two control-cam pairs are connected to one another via a common shaft. The shaft is disposed above the return strands.

Abstract: An apparatus for the removal of proof sheets from a sheet-processing machine has at least one sheet catcher provided with a gripper device. The gripper draws the sheet out of the stacking region. A lower sheet catcher is first moved into the stacking region above the sheet stack. Following a deposition of at least one proof sheet, the sheet is gripped with the gripper device, and following sheets are held back with an upper sheet catcher. Then the proof sheet is drawn out of the stacking region by moving the lower sheet catcher and the gripper device back.

Abstract: In a device for the transport of sheets in a sheet-processing machine, preferably a printing press, provision is made to transport the sheets on chain-guided gripper bars. The gripper bars are fixed respectively to two chain links arranged indirectly beside each other. The forces acting on the gripper bars are more evenly distributed.

Abstract: A method of depositing sheets coming out of a sheet-processing machine includes decelerating the sheets and depositing the sheets of a main pile. Certain sheets are decelerated and fed to a second sheet pile. The system includes a device for decelerating the sheets arriving from the sheet-processing machine and for depositing the sheets on a main pile. A chain gripper system is configured to hold and decelerate a trailing edge of the sheets. The chain gripper system includes an adjustable gripper opening cam.

Abstract: An apparatus for ejecting sheets from a sheet transport path onto an auxiliary stack disposed upstream of a main stack, includes a planar sheet guide surface having a sheet ejection opening formed therein. The sheet ejection opening is closed by a sheet separating element and a flap, in a closed state. The separating element and the flap also serve as guide elements during the ejection of sheets.

Abstract: An apparatus for clamping and releasing a drive wheel on a shaft, includes a spring device which encloses the shaft annularly to provide a direct clamping connection with the shaft. The spring device is connected to the drive wheel which can be a chain sprocket or a gearwheel. A sheet-processing machine and a sheet-fed rotary printing press, are also provided.

Abstract: A sheet delivery includes an endless conveyor for conveying printed sheets, and also comprises a secondary gripper with a gripper bar by way of which the printed sheets are received from the conveyor at their trailing edges and deposited on a delivery stack. A coupler transmission generates an annular circulatory movement of the gripper bar. The coupler transmission has criss-crossing oscillating cranks.

Abstract: A sheet-processing machine, in particular a rotary press, has a first gripper system for transporting sheets onto a sheet stack and a second gripper system following the former for accepting selected sheets from the first gripper system. The second gripper system is oriented substantially vertically and it has a drive that can be actuated separately and independently from the first gripper system.