摘要:
An apparatus for forming stacks of flat workpieces and for banding or banderoling the stacks includes a stacking station, a banding or banderoling station, and an endless conveyor for cyclically conveying stacking shafts provided to the endless conveyor. A respective first band guide is formed on a respective one of the stacking shafts and a second band guide is disposed in the banding station. The second band guide together with the respective first band guide form an at least approximately intrinsically closed guide path.
摘要:
A positioning aid for aligning a heavy machine is fitted to the underside of the heavy machine and is to be brought as desired into contact with a base support or floor. The positioning aid includes at least one aligning element for floatingly mounting the heavy machine in one plane when the positioning aid contacts the floor. A heavy heavy machine has a first movement system and the positioning aid. A method of aligning a heavy machine with a first movement system and a positioning aid includes coarsely positioning the heavy machine with the first movement system on a floor. The positioning aid is extended, so that the first movement system loses contact with the floor and is then floatingly mounted. The heavy machine is freely rotated and displaced on the positioning aid. The heavy machine is lowered onto immovable adjustable feet when reaching the desired position of the machine.
摘要:
Adjusting device for a gripper opening cam in a chain delivery for delivering sheets in a sheet-fed printing press, wherein grippers disposed on gripper carriages of endlessly revolving chains have a cam roller running onto the gripper opening cam for opening the grippers, includes an adjusting shaft journalled in a press frame and having an axis, a lever arm swivellable about an axis transverse to the axis of the adjusting shaft and articulatingly connected to the gripper opening cam, and a linkage for converting rotation of the adjusting shaft into swivelling of the lever arm, the linkage being formed of a combination of a left-hand and a right-hand thread, the adjusting shaft being formed at opposite ends thereof with respective spindle threads of mutually opposite pitch, a spindle nut fixedly disposed on the press frame and a spindle nut connected to the lever arm, the spindle nuts being formed with threads of mutually opposite pitch, the adjusting shaft being screwable by the respective spindle threads thereof into the corresponding spindle nuts.
摘要:
Sheet delivery for a sheet-processing machine having a sheet-conveying device for successively conveying sheets to a device for receiving a sheet pile thereon, includes a device disposed above the sheet-pile receiving device for generating an air flow to facilitate with air a depositing of the sheets upon the pile-receiving device, the air-flow generating device having an air-supplied air-volume chamber having a basal surface and formed with outlet openings distributed over the basal surface thereof, the basal surface having an area corresponding approximately to a maximum sheet format.
摘要:
Protective system of a pile lifting device for sheet piles in a sheet-fed printing machine, wherein a pile support board is liftable and lowerable in guides of a frame by a motorized drive of a lifting unit having a fast-speed and a slower speed operating condition for both the lifting and lowering, the pile support board and a sheet pile supported thereby, respectively, being drivable by the motorized drive to a position switch and into a collision region wherein it can collide with another machine part, including a control member operative between the pile support board or the sheet pile supported thereby, on one hand, and a machine part present in the collision region, on the other hand, the control member being articulatingly fastened in vicinity of the position switch or to the machine part in the collision region, and having switch elements arranged in at least two switching stages for controlling the lifting unit drive and being switchable via contact surfaces on the pile support board, a first plurality of the switch elements arranged in a first one of the switching stages and a second plurality thereof arranged in a second switching stage, the first plurality thereof being located upstream of the second plurality thereof in a direction towards the collision region, the first plurality thereof being actuatable for switching the lifting unit drive from fast speed operation to a slower speed operation, and the second plurality thereof for switching the lifting unit drive off.
摘要:
An apparatus for transporting flat work pieces has a first conveyor and a second conveyor. An inlet mouth is formed from the first conveyor and the second conveyor. The apparatus is distinguished by a geometry of the inlet mouth which can be optimized with regard to different, jointly assumed pivoting positions of the conveyors.
摘要:
A sheet delivery in a printing machine comprises a vacuum system for applying suction air and a sheet brake. The sheet brake is in the form of a brake roller which includes a carrier shaft having a longitudinal axis extending transversely to a sheet delivery direction. The carrier shaft includes a carrier pipe which communicates with the vacuum system. The carrier shaft has a control slit formed therein for the suction air. The control slit extends axially across the carrier pipe, corresponding approximately to a sheet width. A suction body pipe is coaxially supported on and surrounds the carrier pipe. The suction body pipe has a plurality of perforations formed therein and it is rotatably mouted on the suction body pipe. The suction body pipe is rotatably driven at a circumferential speed which is slower than a sheet delivery speed. Suction bodies are supported on the suction body pipe and they may be axially shifted thereon. The suction bodies are formed of radially assembled segments clamping the suction pipe. Bellows sealingly interconnect the suction bodies and seal the suction body pipe. Suction air is briefly applied to the suction nozzles in the sheet carrier surfaces of the suction bodies in phase with a working cycle of the sheet delivery.
摘要:
A sheet delivery for a printing machine or the like with a device for changing a sheet pile while the machine is in operation, includes suction-type grippers insertable into a sheet feeder, opposite to a conveying direction of the sheets and between pile stops for a leading edge of the sheets, the suction-type grippers having a device for gripping by suction, in an inserted end position of the grippers, the leading edge of a sheet deposited onto the suction-type grippers and for holding the sheet at a distance above the sheet pile in an auxiliary-pile position, so as to permit the insertion of an auxiliary-pile device beneath the sheet, and a device for stretching the sheet after the leading edge of the sheet has been gripped by the inserted suction-type grippers, the sheet-stretching device being effective for withdrawing the suction-type grippers a predetermined distance towards the pile stops for the leading edge of the sheet.
摘要:
An apparatus for transporting flat work pieces has a first conveyor and a second conveyor. An inlet mouth is formed from the first conveyor and the second conveyor. The apparatus is distinguished by a geometry of the inlet mouth which can be optimized with regard to different, jointly assumed pivoting positions of the conveyors.
摘要:
A positioning aid for aligning a heavy machine is fitted to the underside of the heavy machine and is to be brought as desired into contact with a base support or floor. The positioning aid includes at least one aligning element for floatingly mounting the heavy machine in one plane when the positioning aid contacts the floor. A heavy heavy machine has a first movement system and the positioning aid. A method of aligning a heavy machine with a first movement system and a positioning aid includes coarsely positioning the heavy machine with the first movement system on a floor. The positioning aid is extended, so that the first movement system loses contact with the floor and is then floatingly mounted. The heavy machine is freely rotated and displaced on the positioning aid. The heavy machine is lowered onto immovable adjustable feet when reaching the desired position of the machine.