FR2778139A1 - OUTPUT DEVICE FOR A ROTARY SHEET PRINTING MACHINE - Google Patents

Abstract

- The present invention relates to an output device for a sheet printing machine. - According to the invention, between two sheet transport systems (5, 9), a third rotary sheet transport system (8) is associated with a transfer cylinder (7), which extends above the second sheet transport system (9), and, with the third sheet transport system (8), there is associated a sheet guiding device (10), externally at a short distance, and a receiving surface (11), aligned in the transport direction (22), is arranged downstream of this sheet guiding device (10), and, with the transfer cylinder (7), there is associated a low battery device (13), and, with the outside, at a short distance from the envelope of the transfer cylinder (7), a sheet guiding device (12) is arranged, at least one first output stack (15) being associated with the transport system of sheets (9).

Description

The present invention relates to an output device for a machine

  sheet printing machine, comprising a first endless rotating sheet transport system, a second endless rotating sheet transport system, arranged downstream, feeding the sheets to an output stack, and a transfer cylinder, arranged between the two systems of

  transport of sheets, with at least one clamp system.

  An output device of this type is known from DE-2 407 752 as a method and a device for outputting sheets from a printing unit to a stack. The device is formed by a first endless conveyor having a clamp device, a transfer cylinder guiding the sheets, as well as a second endless conveyor having a clamp device, which feeds the sheets to a stack. The transfer cylinder is associated with a longitudinal slot arrangement acting in

the direction of advance of the sheets.

  Document GB-1 278 560 discloses an output device

  for a rotary sheet-fed printing machine, which has two systems

  sheet transport heads rotating endlessly with a transfer drum arranged between these sheet transport systems. In another embodiment, the transfer drum can be made as a cylinder

  blanket holder. In addition, the transfer drum, with its axis, is arranged

  generally vertically between the axes of the return elements of the

sheet transport systems.

  According to document DE-2 201 271, there is known a device for

  tie of modular construction sheets for a printing machine,

  the printing material can be brought, as desired, to a standard outlet

  male or at a particular outlet. The output device consists of more than one lower module, a stackable upper module and / or a specific output module. The particular output module has a separate chain circuit and an advantageously arranged output table

  above the stack area of the upper module. In another realization

  tion, the output stack is arranged inside the rotating chain system.

  nes. For safety reasons, a sheet can only be removed when the machine is stopped. To be able to observe the upper stack in the particular output module, this module has a

transparent cover.

  In this case, a disadvantage is that, to evacuate

  the sheets of the particular output module, the machine must be stopped.

  The object of the invention is to provide an output device for a rotary sheet printing machine which avoids the drawback mentioned, which allows in particular better evacuation of the sheets and a capacity

  increased stack stack reception.

  To this end, the output device for a sheet printing machine, of the type indicated above, is remarkable, according to the invention, in that, between the two sheet transport systems, a third

  rotary sheet transport system is associated with the transfer cylinder

  fert, which extends above the second sheet transport system, in that, with the third sheet transport system, there is associated a sheet guide device, externally at a short distance, and in that a receiving surface, aligned in the direction of transport, is arranged downstream of this sheet guiding device, and in that, with the transfer cylinder, there is associated a low battery device, and in that, with the outside, at a short distance from the envelope of the transfer cylinder, a sheet guiding device is arranged, at least one first output stack being associated with the sheet transport system. Advantageously, the sheet guiding device associated with the

  third sheet transport system has means of transporting

  carrying leaves arranged in an integrated manner.

  Preferably, the sheet guiding device and the receiving surface have sheet transport means arranged in a manner

integrated lesson.

  In addition, the means of transporting sheets are strips

rotary suction.

  Furthermore, the means of transporting sheets are nozzles

  spherical which can be supplied with supply air.

  Advantageously, the receiving surface has a device

  measure to feel the top of a sheet.

  Preferably, the measuring device is movable.

  In addition, the sheet guiding device associated with the

  transfer is arranged between the lower strand of the second trans-

  carrying sheets and the low battery device, to protect this surface area. Furthermore, the sheet guiding device can be supplied pneumatically. Advantageously, the sheet guiding device has a

  supply air system, which is arranged adjacent to the arrangement

low battery.

  Preferably, in the area of the first outlet stack, there are arranged movable plates in the area of the stack, to protect

  the lower strand of the second sheet transport system.

  In addition, a second output battery is arranged, as a main battery.

  cipal, downstream of the first output stack.

  In addition, the third sheet transport system has

separate training.

  An advantage is that, during printing, an eva-

  Separate cuation of the leaves is possible. The possibility of access to the systems

  Sheet guide temes are largely excluded, so that the risk of injury to the operator by rotating sheet transport systems is significantly reduced. In addition, the stack area can be protected, when replacing the stack, with respect to the guidance systems of

  rotating sheets. Another advantage is that the evacuation se-

  leaf trim can be made above the sheet outlet via the main stack, risk of injury to the operator

  by systems for guiding rotary sheets being likewise reduced.

  It is also advantageous that, in the output device, there is preferably arranged a measuring device for monitoring the quality of the printing products. In addition, it is advantageous that a second outlet is provided which can be used for the isolation of printed matter, such as smudged sheets, or to form an auxiliary stack. Finally, the

  outlet can be achieved by having a third outlet to form a se-

main battery.

  The figures in the accompanying drawing will make it clear how

the invention can be realized.

  Figure 1 shows an output device with first and second

output batteries.

  Figure 2 shows an output device with first, second,

  third and third output batteries.

  FIG. 3 illustrates an output device with a contiguous device

bare.

  Figure 4 shows an output device with another continuous device. An outlet device is arranged downstream in the direction of

  transport 22, of a rotary sheet printing machine having a cy-

  transfer liner 1 and a printing unit, which can also be

  ment produced as a lacquering unit, a printing cylinder 2 and a blanket cylinder 3 (in the case of the lacquering unit, an engraved cylinder). We will not go into detail here concerning the creation of the printing unit or the lacquering unit. The output device generally consists of a first sheet transport system 5, of a second sheet transport system 9 arranged downstream in the transport direction 22 with an output stack 15 for depositing the sheets, as well as a transfer cylinder 7 guiding the sheets, arranged between them. Transport systems

  sheets 5, 9 present, each time, several systems of pliers 14.

  The second sheet transport system 9 transports the sheet in

  the grip of the clamps towards a first output stack 15 which is preferably

  ment a high stack. The output stack 15 can advantageously be removed from the output device laterally on means of transport

  on the ground. It is preferred that the transfer cylinder 7, relative to a cy-

  blanket liner 3 of simple size, either a cylinder of double size or

  multiple having at least two gripper systems arranged in a similar fashion

  metrically distributed around the periphery. Alternatively, the arrangement of a

  transfer cylinder 7 of simple size with a clamp system is real

  readable. Between the two sheet transport systems 5, 9, a third rotating sheet transport system 8 is associated with the transfer cylinder 7, which extends from the envelope surface of the transfer cylinder 7 above the second sheet transport system 9. The

  third sheet transport system 8 has at least one

  setting device 25, which may have a simple construction. The third

  sheet transport system 8 can be commissioned as required

  care by coupling to the machine drive, taking into account the machine angle. In a preferred embodiment, the third system of

  sheet transport 8 can be driven separately. A coach-

  The separate arrangement has the advantage that the third sheet transport system 8, taking into account the transfer of the sheets (from the transfer drum 7 to the pick-up device 25) and / or the output of the sheets (from the

  positive 25 at a drop surface 11), can be individual-

  slowed down, synchronized or accelerated, concerning its peripheral speed

  relative to the machine speed.

  The third sheet transport system 8 is associated, outside, a short distance from the lower strand, with a sheet guiding device 10. A receiving or depositing surface 11, advantageously as a synchronization console, is arranged. downstream, aligned in the extension in the direction of transport 22, of this device

  sheet guide 10. The depositing surface 11 is thus located

  above the second sheet transport system 9. In the depositing surface 11, functions of a control desk are advantageously integrated or associated. The depositing surface 11 is accessible to the operator in the service position, so that quality control

  sample sheets can be made on the depositing surface 11.

  In another embodiment, at least one transport means 26 is arranged downstream of the depositing surface 11 in functional connection, which carries out the subsequent transport of the sheets deposited as a chaining system. The transport means 26 can be produced, for example, as a conveyor belt. The means of transport 26 is chained, by

  example, at a further processing station and / or at a syn-

  central chronization and / or a storage device and / or a

  beggar. With the transfer cylinder 7, there is associated a low pile device 13 as a maculature pile, a curved sheet guiding device 12 being arranged outside the envelope of the transfer cylinder 7 at a short distance. Preferably, this sheet guiding device 12 is arranged between the lower strand of the second sheet transport system 9 and the low battery device 13. Thus, this area can be protected on the surface and the sheet guiding device 12 fills , next to the

  sheet guiding function, also protection function

  be risks on the rotary transfer cylinder 7. In another reali-

  sation, the sheet guiding device 12 is made telesco-

  spades. Thus, the free area relative to the stack (low stack device 13) of the transfer cylinder 7 can be protected by the sheet guiding device 12 then released. This is relevant when the low battery device 13 is evacuated, the area below the cylinder

  transfer 7 remains free and thus there is a risk of injury.

  The operation is as follows. The sheet from the cylin-

  dre of printing 2 arranged upstream is always received by a system

  clamps 14 of the first rotating sheet transport system 5, which

  from the pull strand to the sheet guiding device 6, and transferred

  in the direction of transport 22 to the transfer cylinder 7.

  In the printing of the print, the sheet is received on the transfer cylinder 7 by a system of clamps 14 on the traction strand of the second sheet transport system rotating 9 in the transport direction 22, slowed down at the level of the sheet braking 17 adjustable in format (adjustable skeleton), and deposited on the first output stack 15.

  In the case of the evacuation of sheets, for example the evacuation

  tion of sample sheets for quality control purposes, the sheet is received by a gripping device 25 on the traction strand of the third sheet transport system rotating 8 in the transport direction 22, transported to the sheet guiding device 10, released from the system

  25 advantageously before the return radius and, advantageously

  ment, suspended on the sheet guiding device 10.

  In addition, the transport speed for the deposition process is reduced by the advantageously separate drive of the sheet transport system 8. Preferably, the sheet transport means transport the sheet to the depositing surface 11. In a first embodiment, the printed sheet passes the measuring device 23, which is for example movable on a crosspiece. In another embodiment, the measuring device 23 is movable on an air cushion on the surface of the sheet

  being on the depositing surface 11 by the operator.

  In the case of a maculature, the sheet is transported from the cylin-

  transfer dre 7 to the sheet guiding device 12 and deposited on the low pile device 13. The guiding of the sheets is further facilitated by a supply air system 24 associated with the guiding device of

  12 sheets or integrated into it.

  In the case of a continuous battery exchange, you can work as follows. The sheets brought by a first sheet transport system 5 are received in variable number by the transfer cylinder 7 and brought to be deposited there not at the second sheet transport system 9, but from the transfer cylinder 7 to the low battery device 13, advantageously at full speed of the machine. After the last sheet has been deposited on the first output stack 1 5, laterally arranged plates 18 are moved in the meantime in the area of the first output stack 15 and generally close the lower strand of the sheet transport system 9. Thanks to the sheet braking device 17 set to the skeleton format, as well as the retracted plates 18, the lower strand of the sheet transport system 9 is completely protected. The first output stack 15 is meanwhile completely lowered and discharged. A new pallet / support plate is brought in and the stack lift is activated. Before reaching the end position of the pallet / support plate, the plates 18 as well as the sheet brake 17 are returned to their initial position, the pallet / support plate is brought and positioned in the end position . In the meantime, the sheets are again brought from the transfer cylinder 7 to the second sheet transport device 9 and the sheets on the pallet / support plate are stacked in a new output stack 15. The sheets collected in the meantime the low battery device 13 can be joined to the sheets of the first output battery 15 or must be removed as

smudge.

  Alternatively, a separation of the main battery and the

  auxiliary battery, for example in the output battery 15, is also reali-

  sand by means of the introduction of an auxiliary pile base on the rails

  angled 19 arranged integrally with the frame.

  The output device described has, among other things, devices for leveling the side sheets and, if necessary, before, which serve to

  the exact formation of the pile edges.

  In another embodiment, another second output stack 16 (FIG. 2) is arranged downstream of the first output stack 15 in the transport direction 22. The second sheet transport system 9

  moreover also extends over this output stack 16, and the surface of

  pose 11 is then arranged above this output stack 16 in posi-

  tion of service. The exit device present in the area of the se-

  conde output battery 16 the same characteristics as

  in the area of the first output battery 1 5.

  At least the output of the sheets via the transfer drum 7 towards the low pile device 13 as well as the exit by means of the third sheet transport system 8 towards the surface of

  removal 11 are electrically controllable taking into account the an-

  machine gle. Likewise, temporarily free areas, for example during the discharge of a battery, are protected at least by sensor, so that sufficient protection against risks for the operator is guaranteed.

Claims (12)

  1. An output device for a sheet printing machine, comprising a first system for transporting endless rotating sheets, a second system for transporting endless rotating sheets, arranged downstream, bringing the sheets to an output stack, and a transfer cylinder, arranged between the two sheet transport systems, with at least one clamp system, characterized in that, between the two sheet transport systems (5, 9), a third sheet transport system rotary (8) is associated with the transfer cylinder (7), which extends above the second sheet transport system (9), in that, with the third transport system   sheets (8), there is associated a sheet guiding device (10), external   laughingly at a short distance, and in that a receiving surface (11), aligned in the direction of transport (22), is arranged downstream of this   sheet guiding device (10), and in that, at the transfer cylinder   fert (7), it is associated with a low battery device (13), and in that, ex-   tieur, a short distance from the envelope of the transfer cylinder (7), there is arranged a sheet guiding device (12), at least a first output stack (15) being associated with the transport system sheets (9).   2. An output device according to claim 1, characterized in that the sheet guiding device (10) associated with the third sheet transport system (8) has means for   transport of sheets arranged in an integrated manner.   3. An output device according to claim 2, characterized in that the sheet guiding device (10) and the receiving surface (11) have arranged sheet transport means in an integrated way.   4. An output device according to claim 2 or 3, characterized in that the sheet transport means are strips rotary suction.   5. An output device according to claim 2 or 3, characterized in that the sheet transport means are nozzles   spherical which can be supplied with supply air.   6. outlet device according to claim 1, characterized in that the receiving surface (11) has a device   measuring (23) for palpating the top of a sheet.   7. An output device according to claim 6,   characterized in that the measuring device (23) is movable.   8. An output device according to claim 1, characterized in that the sheet guiding device (12) associated with the   transfer cylinder (7) is arranged between the lower strand of the second system   sheet transport unit (9) and the low battery device (13), for protect this surface area.   9. An output device according to claim 1, characterized in that the sheet guiding device (12) can be pneumatically powered.   10. Exit device according to claim 1, characterized in that the sheet guiding device (12) has a supply air system (24), which is arranged adjacent to the low battery device (13).   1 1. output device according to claim 1, characterized in that, in the region of the first output stack (15), are   arranged plates (18) movable in the stack area, to pro-   cover the lower strand of the second sheet transport system (9).   12. An output device according to claim 1, characterized in that a second output stack (16) is arranged, as   main stack, downstream of the first outlet stack (15).   13. An output device according to claim 1, characterized in that the third sheet transport system (8)   has a separate workout.