EP3248918B1 - Reprise de feuille dans une unité margeur - Google Patents

Reprise de feuille dans une unité margeur Download PDF

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Publication number
EP3248918B1
EP3248918B1 EP17172693.8A EP17172693A EP3248918B1 EP 3248918 B1 EP3248918 B1 EP 3248918B1 EP 17172693 A EP17172693 A EP 17172693A EP 3248918 B1 EP3248918 B1 EP 3248918B1
Authority
EP
European Patent Office
Prior art keywords
sheet
feed table
drum
feeding unit
gripper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17172693.8A
Other languages
German (de)
English (en)
Other versions
EP3248918A1 (fr
Inventor
Harald Bayer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland Sheetfed GmbH
Original Assignee
Manroland Sheetfed GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102017111309.6A external-priority patent/DE102017111309A1/de
Application filed by Manroland Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP3248918A1 publication Critical patent/EP3248918A1/fr
Application granted granted Critical
Publication of EP3248918B1 publication Critical patent/EP3248918B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/085—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers by combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/08—Combinations of endless conveyors and grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4471—Grippers, e.g. moved in paths enclosing an area
    • B65H2301/44712—Grippers, e.g. moved in paths enclosing an area carried by chains or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device for sheet transfer in a placement unit according to the preamble of claim 1.
  • Docking units for singling and targeted tactual feeding of sheets to a working process are known in the context of sheet-fed rotary printing presses.
  • Sheet conveying takes place via impression cylinders and transfer drums.
  • the printing process operates e.g. after the flexo or offset printing process.
  • sheet coating machines such as painting machines.
  • the application and alignment of the printing material is carried out in facilities for sheetfed, which are fed from a sheet pile scattered sheet as shingled stream via a belt table.
  • the scale flow of the printed sheets can be conveyed by means of suction belts via a suction belt table.
  • a sheet system usually has side marks that can work with pneumatic conveyors, and there are front and top brands provided.
  • these alignment means are usually provided with a format adjustment.
  • the sheetfed also includes sensory devices for controlling the position of leading edges, side edges, skew or multiple layers of the signatures.
  • attachment locks act to block the printed sheets in the event of position inaccuracy in the sheet transport.
  • Subordinate to the sheet system are oscillating pregrippers, which interact with rotating transfer drums. The substrate undergoes abrupt changes of direction on its conveying path and undergoes considerable delays and accelerations.
  • a landing unit in a modular printing machine system which cooperates with the printing cylinder of a printing unit first double-sized investment drum with peripherally two gripper systems having.
  • This is a second simple-sized investment drum in the sheet conveying direction arranged vertically offset.
  • a third single-size feed drum is the second arranged vertically offset and connected to the sheet transfer with a tilted feed table in.
  • the sheet acceleration system on the high pile feeder is used to process cardboard, while the press is suitable for cardboard and paper.
  • a normal feeder is used, which has to be exchanged completely for a high-pile feeder during carton processing.
  • the application unit is very expensive due to the large number of drums. Due to the many sheet transfers and curvature of the drums, the sheet run is adversely affected. Particularly disadvantageous is the replacement of the aggregates when using a high-pile feeder.
  • This sheet feeder shows a rotating pregripper drum inclined in the conveying direction upstream feed table.
  • the pre-gripper drum has two diametrically arranged gripper systems that can dive into the drum body.
  • the sheet feed takes place with a transfer drum connected between the pregripper drum and a printing cylinder.
  • the pre-gripper drum is directly associated with a printing cylinder. Front lays are pivotally integrated in the feed table from below.
  • a rotating pregripper with two gripper systems is known, upstream of a plant table in the conveying direction and a downstream of the same investment drum is arranged downstream.
  • the pre-gripper rotates at half the speed of the feed drum.
  • the gripper systems perform on the pre-gripper a swinging motion about the pre-gripper axis or about a shaft mounted eccentrically to the pre-gripper axis.
  • a partial circumference of the pre-gripper drum protrudes beyond the level of the feed table, which is unfavorable for the bowing.
  • an application unit for a sheet processing machine in a sheet processing machine is known with a method of applying sheets that are suitable for application to a sheet processing plant
  • Creating sheet known which is designed for attachment to a sheet processing plant. It shows a feed table and arranged at the printing unit side end of the feed table gripper system. The gripper system feeds each sheet directly to a transfer cylinder of the sheet processing plant.
  • a landing unit for a sheet processing machine is known.
  • An investment drum, a feed table and an investor are combined in one module.
  • the axis of the double-sized investment drum of a horizontal plane formed by the axes of all printing cylinders.
  • Gripper systems pivotally mounted on the abutment drum consist of a gripper shaft, grippers arranged on the gripper shaft and gripper loading strips and front marks arranged thereon.
  • Out DE 10 2007 033 936 A1 is a circumferential pregripper for sheet feeding from a feed table to a transfer drum known. It has at least one non-uniform circulating sheet-holding system and should realize a high productivity-securing sheet feeder by simple means. The at least one encircling sheet-holding system is received in a right-hand guideway and in a left-hand guideway, and the guideways form a self-contained curve.
  • Out DE 103 55 515 A1 is a rotating pregripper for sheet feeding from a feed table to a transfer drum with a first non-uniform circumferential gripper system and a second non-uniform circumferential gripper system known.
  • the pre-gripper should have a compact design and be realized with little effort, with positioning actions for influencing the gripper operations are possible.
  • the first gripper system is assigned by means of studs of a shaft and it is arranged concentrically to the axis of rotation of a second gripper system supporting hollow shaft.
  • the hollow shaft is provided with radial slots in the track of the stud bolts.
  • the orientation of the sheet should be done in the conveying movement during transport from the sheet separation in the sheet feeder serving suction head to a counter-pressure cylinder in the first printing unit of the sheet-fed press. This would considerably more time to align the sheets before the first printing unit of the sheet-fed press available.
  • the invention has for its object to provide a placement unit for a sheet processing machine of the type described above, the said Avoid disadvantages that allows in particular a simple modular design and allows improved sheet management of the sheet.
  • the invention relates to a placement unit for a sheet-fed rotary printing press with one or more printing units and / or paint modules, which are equipped with a substructure of each double-sized transfer drums and counter-pressure cylinders.
  • the application unit is provided with a sheet feeder, a conveyor unit and a feed table, which may comprise a single- or double-sized feed drum, which is associated with a sheet-guiding drum of a first printing unit of the sheet-fed rotary printing press.
  • the conveyor unit is designed as an endless conveyor system connecting the lower bearing drum to an upper bearing drum, the upper bearing drum being associated with the sheet feeder.
  • the upper feed drum is assigned to the sheet feeder via a feed table associated therewith, and the position and / or the time of pickup are adjustable by the feed system from the feed table to different substrate thicknesses or are self-adjusting.
  • the lower investment drum is double-sized and formed from the drum body of a delivery drum and at the bearing of a transfer drum of the first printing unit of the sheet-fed rotary printing machine is arranged and that the upper investment drum is formed with a single-large diameter.
  • the conveyor system is designed as conveyor chains exhibiting endless conveyor with gripper systems.
  • the gripper systems have grippers for detecting, holding and transporting printed sheets and leading edge stops for aligning sheet to be detected on and are on the transport and the return path between upper and lower bearing drum guided at least in the region of movement parallel to the feed table with guide rollers in guide rails.
  • the feed table is assigned to the sheet feeder in the amount of the upper edge of a sheet pile.
  • a suction head arranged in the sheet feeder above the sheet stack for sheet separation conveys printed sheets separated from the sheet stack directly onto the feed table.
  • the upper abutment drum is associated with the feed table near the edge of the sheet stack and the adjoining region of the conveyor system is substantially parallel to the feed table in the conveying direction.
  • the feed table has recesses extending in the conveying direction and designed as feed table engagements. In these feed table interventions dive the open gripper and associated with these leading edge stops of the gripper systems on the conveyor system in the movement in the conveying direction during the sheet takeover. In an advantageous embodiment, it is provided that the area of the conveyor system adjoining the upper contact drum is to a small extent removed in the conveying direction from the extension of the feed table.
  • the feed table is slightly removed in the conveying direction following the upper abutment drum from the plane of expansion of the conveyor system.
  • an inclination between the feed table relative to the adjoining the upper bearing drum in the conveying direction of the conveyor system can be adjusted in accordance with a printing material thickness curve in the conveying direction.
  • the feed table two or more sheet position sensors are assigned, which are designed to detect a sheet leading edge of a conveyed over the feed sheet in a specific position or over a range of motion.
  • the application unit is associated with a controller, which with the arranged on the feed sheet sheet position sensors via a data line and a first control line with a machine control the sheet-fed rotary printing press is connected.
  • the controller is adapted to perform a determination of position data of the sheet leading edge of a sheet conveyed over the feed table. Furthermore, the controller carries out a determination of specifications for position data of the leading edge of the printed sheet from data of the machine control.
  • the controller is connected by means of a second control line with an intrinsic motor drive or an electromechanical suction control of the suction head in the sheet feeder.
  • the controller performs a target-actual comparison of the position data and the predetermined position data. From this, control data for a control of the suction head required on the basis of the desired-actual comparison are obtained.
  • a device for setting an inclination of the surface of the feed table in the conveying direction in dependence on control data of the machine control is adjustable.
  • the conveyor system assigned a device for adjustable gripper control of the gripper on the gripper systems in the sheet transfer to the feed.
  • the controller is coupled to the gripper control so that the grippers close in a particular position or within a range of motion.
  • Another advantage is that the machine speed can be increased bar, since the plant drum are always rotating in the conveying direction and the time required for conventional swinging systems for the swing back is not needed. In this case, there are no edge changes to the drive systems, which supports the smooth running of the machine. Retroactive moments on the drive wheel train are noticeably reduced and the drive itself is simpler.
  • Another advantage is based on the improvement of bowing. Due to the inclined or preferably horizontal design of the feed table in conjunction with the feed drum arranged for the feed drum is bent by the relatively large drum diameter of the sheet less than, for example with a single-sized investment drum.
  • the application unit is therefore universally applicable for the processing of relatively thin printed sheets as well as thick sheets, such as cardboard or sheet metal, regardless of the elastic behavior of the sheet.
  • the arrangement of the upper bearing drum on one or offset in height above a horizontal plane formed by the axes of all counter-pressure cylinder allows for a horizontally arranged feed table at the level of the stack surface, the formation of a Hochstapelanlegers. A complex replacement of a normal stack feeder against a high pile feeder is obsolete.
  • the feed table is preferably formed planar surface and provided with longitudinal openings, in which the open at the inlet to the upper bearing drum gripper fingers of the gripper systems of the conveyor system.
  • the structural design of the solution according to the invention has a parallel guide on the contact plate between the gripper systems and pushed by the suction pressure sheet as investment area corresponding to a conventional investment sheet in the sheet feeder.
  • the printed sheets can be retained in the sheet feeder by means of an attachment lock. As a result, less or no waste accumulates through printed sheets, the stay in the well-known way with stoppers on the belt table and must be cleared which makes them useless.
  • the orientation of the sheet can be done during transport between the feeder stack and the first printing unit. Axially, ie transversely to the paper direction, the so-called side registration is set by page orientation. The orientation with respect to the slant arc and the position of the leading edge is controlled by the forward movement of the gripper systems.
  • a sensor with sheet control sensors in the course of the conveyor system is connected to a closed loop and ensures that early, late, double and oblique sheets are already recognized on the investment sheet and are excluded from the acquisition in the sheet transport by means of the conveyor system. Also possible is a single drive of the sheet feeder, so that then an inline orientation of the early / late bow can be done in machine operation, since the forward movement of the separated sheet can be directly influenced by means of the single drive. Due to the concept of sheet feeding by means of the gripper system and rail transport in the sheet system, the base of the printing units may be omitted in high-stacking machines.
  • Sheetfed offset presses are held or made competitive in the future. There is no need to make any difference between the first printing units and the following printing units. As delivery drum or as a lower investment drum, a delivery drum can be used. Card stock bowing will be massively improved by avoiding scratches and other damage. There is neither a belt table nor belt rollers. The sheetfed system will significantly reduce the number of stoppers in operation and bring a real benefit to the customer, as less waste is created and much easier operation is required by minimal operator intervention.
  • the pre-gripper from below which was previously used in the system technology, will disappear in the continuous system. Since a takeover of the substrate is done from the top, an adjustment to the substrate thickness is required. This is currently being solved with great effort by wedge or eccentric settings. According to the invention no complicated adjustments are required.
  • the actuator is a curve similar to that of the boom discharge. This can be set manually or from the control center to the paper thickness.
  • An important embodiment element are inclined gripper bumps in the conveying direction for the grippers on the gripper system, as used in so-called jib systems, ie gripper systems which are already used in a jib conveyor.
  • An inclined to the movement path of the conveyor system in the field of sheet transfer comb-shaped contact sheet forms another basic element of the inventive solution.
  • the printed sheets are taken over at different times depending on the sheet thickness.
  • a stepless adjustment to the thickness values of the substrates to be processed can also be done inline during the machine run in the production process.
  • a sheet-fed rotary printing machine (Sheet-fed offset printing machine) and has one or more printing units D1, D2 and / or paint modules.
  • Each of the first printing unit D1 downstream printing unit D2 or paint module has a transfer drum 4 and one of these in the conveying direction R downstream impression cylinder 5 for the sheet transport.
  • Each counter-pressure cylinder 5 of all printing units D1, D2 is associated with a single-sized blanket cylinder 7 and a single-sized forme cylinder 6.
  • each printing unit D1, D2 the counter-pressure cylinders 5 and transfer drums 4 are twice as large, starting from the single-sized blanket 7 and forme cylinder 6 and designed to carry two gripper rows 22 for sheet transport.
  • the application unit 19 consists of a sheet feeder 1, a feed table 2 and one each based on the single-size form cylinder 6 single or double-sized upper and a lower bearing drum 3.1, 3.2.
  • the upper bearing drum 3.1 and the lower bearing drum 3.2 are connected by two at a distance of the working width of the sheet-fed rotary printing press on both sides arranged endless conveyor chains 23 having conveyor system 11 with each other.
  • the conveyor chains 23 are guided via two sprockets on the upper and lower bearing drum 3.1, 3.2.
  • the conveyor system 11 has in the exemplary embodiment, five on the conveyor chains 23 in guide rails 12 and the sprockets of the upper and lower bearing drum 3.1, 3.2 rotating gripper systems 8.
  • the gripper systems 8 are designed as bar-shaped conveying elements which extend between the conveyor chains 23. Distributed over their length each have a larger number of grippers 9, which are evenly distributed a number of leading edge stops 25 associated with the sheet alignment.
  • the grippers 9 are used to transport the sheet B by detecting and holding at the sheet leading edge 26th
  • the feed table 2 is arranged directly following an upper edge of a sheet stack 14 held in the sheet feeder 1 in the direction of conveyance R and aligned substantially horizontally.
  • the feed table 2 is the surface of the sheet stack 14 associated upstream of a suction head 13, by means of which the in each case the uppermost signature B is separated from the sheet stack 14 and advanced by means of suction conveyors 13.1 in the direction of the feed table 2 until the sheet leading edge 26 has come into the effective range of acquisition by the gripper 9 to the gripper systems 8.
  • the upper bearing drum 3.1 is arranged, are guided over the guided on the conveyor chains 23 gripper systems 8 on guide rails 12 in the region of sheet transfer parallel to the feed table 2 via a takeover Ü.
  • An isolated printing sheet B is thus taken up by the gripper systems 8 in the grippers 9 which are open towards the feed table 2 at the inlet.
  • the introduction of the sheet B by the suction conveyor 13.1 of the suction head 13 in the gripper 9 takes place until the sheet leading edge 26 on the leading edge stops 25, so that then the sheet B can be detected at the sheet leading edge 26 and removed.
  • the process of alignment and the sheet transfer takes place at the currently required on the conveyor system 11 fully effective machine speed.
  • a device with one or more sheet position sensors 20 is arranged below the feed table 2, below the feed table 2, a device with one or more sheet position sensors 20 is arranged.
  • the sheet position sensors 20 By means of the sheet position sensors 20, the position of the edges (sheet leading edge 26, sheet side edge 27) of a currently separated from the sheet stack 14 and taken over by the gripper system 8 with the grippers 9 sheet B is detected and in terms of its position relative to the machine cycle and the position in terms of alignment evaluated in the acquisition of the separated sheet B from the feeder stack 14 for transport in the conveying direction R on the conveyor system 11.
  • a sheet guiding device 21 is arranged approximately parallel to the sheet transport path.
  • each separated sheet B is guided by a gripper system 8 from the upper feed drum 3.1 to the lower feed drum 3.2, where it is transferred to the impression cylinder 5 of the first printing unit D1.
  • further sheet position sensors 20 can be arranged be to further monitor the position of the sheet edges in the gripper system 8 during transport with machine speed.
  • the position data resulting from the respective measurement of the sheet position by means of the sheet position sensors 20 are used to adapt the sheet position with respect to the processing cycle and the page orientation of each individual sheet B prior to transfer to the sheet-fed rotary printing press.
  • a controller hereby a target-actual comparison is made.
  • the feed table 2 is arranged substantially horizontally so that the printed sheet B singulated by the suction head 13 on the sheet stack 14 in the sheet feeder 1 can be detected or taken over in the area of the feed table 2 in the course of a takeover line Ü.
  • This sheet takeover takes place in a consistently substantially horizontal conveying plane to the gripper systems 8 fed in by the feed drum 3.1 and virtually overhead with grippers 9 opened downwards.
  • the sheet transfer takes place at the grippers 9 dipping into areas of the feed table 2 the gripper systems 8 is by means of in Fig. 2 and 3 shown leading edge stops 25 against which the sheets B are applied before the grippers 9 are closed.
  • the abutment drum 3.1 is arranged above the feed table 2 within the laying unit 19 in such a way that the substantially horizontal conveying plane of the feed table 2 runs tangentially to the corresponding gripper system 8, which enters via the abutment drum 3.1.
  • the upper and lower bearing drum 3.1, 3.2 may, based on the single-size form cylinder 6, be either single or double sized. The constructive selection for this can be made depending on the space requirements and the demands on to be processed printing materials.
  • the lower bearing drum 3.2 can be arranged with its axis (in alignment) or offset in height (offset in parallel) above a plane which is formed by the aligned axes of all impression cylinders 5 of the printing units D.
  • At least the lower conditioning drum 3.2 can be designed as a double-sized drum for the simultaneous recording of two gripper systems 8. It then has a favorable for the guidance of stiffer materials for printing larger diameter, so that the sheet to be transported B not so strong bent and thus can be passed more easily to the impression cylinder 5 of the first printing unit D.
  • a jib drum can be used, as it is well known as part of a boom conveyor, a sheet-fed rotary printing machine of the type concerned here.
  • the upper bearing drum 3.1 does not have this problem because the printed sheets B are always taken there only after expiration of the gripper systems 8 of the plant drum 3.1 in the grippers 9 of the gripper systems 8.
  • the lower abutment drum 3.2 and the sheet guiding device 21 are each a measuring system with at least one sheet position sensor 20 for position detection (actual value) of the printed sheet B guided on gripper systems 8 in the upper bearing drum 3.1, over the sheet guiding device 21 and on the lower bearing drum 3.2 allocated adjacent.
  • the position detection can refer to at least one side edge and the sheet leading edge 26 of the sheet-shaped signature B.
  • the sheet position sensors 20 are circuitry-coupled with an evaluation unit for the target-actual comparison and a control, such that the gripper systems 8 in a training transversely to the conveying direction R is laterally movable.
  • the functional connection of sheet position sensors 20, evaluation unit and control such that a lateral movement of the gripper system 8 realized and / or in an inclined position of the sheet B to the conveying direction R its positional offset recognizable and the sheet B by in or against the conveying direction R obliquely adjustable gripper system 8 can be aligned in the desired position.
  • the sheet position sensors 20 assigned to the feed table 2 and / or the sheet guiding device 21 and / or the lower feed drum 3.2 are both jointly or individually applicable depending on the accuracy requirements.
  • the lower conditioning drum 3.2 is in the embodiment according to Fig. 1 arranged directly upstream of the impression cylinder 5 of the first printing unit D1.
  • Each in the conveying direction R downstream printing unit D2 or any other processing unit is then formed by a double-sized transfer drum 4 and a double-sized impression cylinder 5.
  • the operation of the application unit 19 is as follows: In the sheet feeder 1, a sheet-shaped printed sheet B is separated by means of the suction head 14 from the top of the sheet stack 13 in the machine cycle and continuously accelerated in the conveying direction R to machine speed. In the forward movement, the sheet is fed to the feed table 2 and in this case preferably already examined with respect to its position and to double sheets or bow damage. Upon entry of the printing sheet B on the feed table 2, a first orientation of the printed sheet B to a sheet side edge 27 can take place after a preferred metrological detection of an actual value and a nominal-actual comparison in the control.
  • the transport takes place in the conveying direction R against leading edge stops 25 on the gripper system 9 which runs ahead with the grippers 9 open at the bottom.
  • the grippers 9 then grasp the printed sheet B when the sheet leading edge 26 at the leading edge stops 25 is present.
  • the gripper 9 come already to the effect while the sheet leading edge 26 abuts the leading edge stops 25, since they act simultaneously as so-called deck marks and secure the sheet leading edge 26 until the sheet B is fixed in the gripper closure on the gripper system 8.
  • This process with the detection of the position of the sheet leading edge 26 of the sheet B is carried out in a synchronous movement between sheet B and gripper system 8 parallel to each other along the feed table 2 during the transport movement along the takeover Ü.
  • the expired by the rotating drum 3.1 gripper system 8 is moved further on the conveyor system 11 in guide rails 12 and pulls the fixed in the gripper closure arcuate sheet B from the feed table 2 and transports this, while the plant drum 3.1 is constantly moved at machine speed, in the conveying direction R on the sheet guiding device 21 down.
  • the sheet guide device 21 may be formed as a simple smooth or contoured guide surface over which the sheet B is towed.
  • the sheet guiding device 21 may also be formed as a pneumatically actuated guide surface over which the sheet B is dragged under the influence of compressed air floating or taut under the influence of suction air.
  • a further or initial metrological detection of the printed sheets B can take place with evaluation of the position and corresponding correction on the conditioning drum 3.
  • the printing sheet B is transferred from the conditioning drum 3.2 in the transfer area to the count of the first printing unit D1 impression cylinder 5.
  • the sheet B is then transferred after the first printing of the transfer drum 4 of the second printing unit D2 and in a known manner to the subsequent impression cylinder 5. Thereafter, any further processing can take place.
  • the conditioning drum 3.2 is designed as a double-sized drum, its drum body from a delivery drum at the end of the sheet-fed offset printing press be taken over.
  • a transfer drum 4 is provided, in which the delivery drum is used.
  • the jib drum is also intended to accommodate endless chain conveyor systems.
  • Fig. 2 the solution according to the invention is shown in detail with a sheet transfer situation between a gripper system 9 and the feed table 2.
  • the gripper system 8 is guided on lateral guide rollers 10 in the guide rails 12 of the conveyor system 11 by the conveyor chains 23.
  • the gripper system 8 is circulated with the upper bearing drum 3.1 and is in motion through the transfer line Ü above the feed table 2 for taking over a sheet B ready.
  • a separated from the suction head 13 sheet B is pushed onto the feed table 2.
  • the sheet B is detected on the gripper system 8 by being clamped by grippers 9, which are moved on a gripper shaft 9.2 on the gripper system 8 of cams against gripper clutches 9.1.
  • the grippers 9 dive when approaching the feed table 2 in recesses, which are designed as over a range in the conveying direction R of the feed table 2 extending feed engagement 2.1 (see Fig. 3 ).
  • the gripper tabs 9.1 are guided in a well-defined path and approach during the movement of the surface of the feed table 2, so that there is a fixed distance relation. Since, however, substrates of different thicknesses have to be processed, it is provided that the gripper closure may only take place when the print sheet B rests smoothly on the feed table 2 with its sheet leading edge 26 and is in a predefined relation to the gripper system 8 taking over the print sheet B.
  • each gripper system 8 is guided obliquely away from the surface of the feed table 2 in the scope of the different substrate thicknesses to be processed.
  • This is in Fig. 2 represented by a printing material thickness curve P in dash-dotted line.
  • the printing material thickness curve P in this case represents the movement path of the gripper attachments 9.1 relative to the surface of the feed table 2.
  • the grippers 9 For functionally correct takeover of the sheet B to the gripper systems 8, the grippers 9 must then be controlled to close against the Greiferaufelle 9.1 at the earliest when the detection of the sheet B at the time of the printing material thickness corresponding position on the substrate thickness P can be done. This is basically the case when the sheet leading edge 26 securely abut against all leading edge stops 25 on the gripper system 8 and the gripper clutches 9.1 are in a distance corresponding to the sheet thickness of the feed table 2.
  • a plurality of sheet position sensors 20.1 which are directed from below into the area of the transfer line Ü of the feed table 2.1, can detect the position of the sheet leading edge 26.
  • the sheet position sensors 20.1 monitor a longer region of the feed table 2 in the conveying direction R, which corresponds to all possible takeover positions corresponding to known sheet thicknesses of the substrates to be processed.
  • Fig. 3 the feed table 2 with the feed table 2.1 2.1 is shown in detail, wherein gripper fingers of the gripper 9 and front edge stops 25 are shown positioned in the feed table 2.1.
  • a sheet position sensor 20.1 is shown, wherein over the entire width of the feed table 2 at least two sheet position sensors 20.1 (possible are also more than two) are provided.
  • a signature B is shown in abutment with its sheet leading edge 26 at the leading edge stops 25.
  • dashed lines are layers for a maximum position 26.1 of the sheet leading edge 26 for indicating a maximum processable printing material thickness and a minimum position 26.2 of the sheet leading edge 26 for marking a minimum processable printing material thickness or a middle transfer position with an adjustable feed table 2.
  • the transfer line Ü is also shown by moving from a position near the beginning the feed table interventions 2.1 reaches to the maximum position 26.1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (13)

  1. Unité de margeage pour machine d'impression rotative de feuilles comportant un ou plusieurs groupes d'impression (D1,D2) et/ou des modules de vernissage qui sont pourvus d'une base composée de tambours respectivement doubles (4) et de cylindre de contre - pression (5), l'unité de margeage (19) étant pourvue d'un margeur de feuilles (1), d'une unité de convoyage et d'une table d'acheminement (2), l'unité de margeage (19) présentant un tambour d'alimentation (3.2) de taille simple ou double par rapport à un cylindre porte-blanchet ou à un cylindre porte-cliché simple (3.2) et qui est associé à un tambour de guidage de feuilles d'un premier groupe d'impression (D1) de la machine d'impression rotative de feuilles,
    caractérisée en ce que l'unité de convoyage est réalisée sous forme d'un système de convoyage continu (11) reliant un tambour d'alimentation inférieur (3.2) à un tambour d'alimentation supérieur (3.1), le tambour d'alimentation supérieur (3.1) étant associé au margeur de feuilles (1) par une table d'alimentation (2) qui lui est associée et que la position et/ou le moment de la prise en charge par le système de convoyage (11) de la table d'acheminement (2) est réglable à plusieurs épaisseurs de support d'impression ou est prévu pour être autoréglable.
  2. Unité de margeage selon la revendication 1, caractérisée en ce que
    le tambour d'alimentation inférieur (3.2) a une taille équivalente au double et est composé du corps de tambour d'un tambour de margeur et est disposé au point d'appui d'un tambour de transfert (4) du premier groupe d'impression (D1) de la machine d'impression rotative de feuilles et que le tambour d'alimentation supérieur (3.1) est réalisé avec un diamètre de dimension simple.
  3. Unité de margeage selon la revendication 1 ou 2, caractérisée en ce que
    le système de convoyage (11) est réalisé sous forme d'un convoyeur continu présentant des chaînes de convoyage (23) et est doté de systèmes de préhension (8), que les systèmes de préhension (8) présentent des pinces (9) pour saisir, maintenir et transporter des feuilles d'impression (B) et les butées de bord avant (25) pour l'orientation de feuilles d'impression à saisir (B) et que les systèmes de préhension (8) sont guidés sur le trajet de transport et de retour entre le tambour d'alimentation supérieur (3.1) et le tambour d'alimentation inférieur (3.2) au moins dans la zone de mouvement parallèlement à la table d'alimentation (2) par des rouleaux de guidage (10) dans des rails de guidage (12).
  4. Unité de margeage selon une ou plusieurs des revendications 1 à 3, caractérisée en ce que
    la table d'alimentation (2) est associée au margeur de feuilles (1) à la hauteur du bord supérieur d'une pile de feuilles (14) reçue par le margeur de feuilles (1) et qu'une tête d'aspiration (13) disposée dans le margeur de feuilles (1) au-dessus de la pile de feuilles (14) pour individualiser les feuilles est conçue pour transporter les feuilles d'impression individualisées de la pile de feuilles (14) directement sur la table d'alimentation (2), que le tambour d'alimentation supérieur (3.1) est associé à la table d'alimentation (2) près du bord de la pile de feuilles (14) et que la zone se raccordant au tambour d'alimentation supérieur (3.1) du système de convoyage (11) est réalisée de manière à s'étendre sensiblement en parallèle à l'extension de la table d'acheminement (2) dans le sens de convoyage (R).
  5. Unité de margeage selon une ou plusieurs des revendications 1 à 4, caractérisée en ce que
    la table d'acheminement (2) présente des échancrures s'étendant dans le sens de convoyage (R) et réalisées sous forme de prises de table d'acheminement (2.1) et qui sont conçues pour recevoir des pinces ouvertes (9) et des butées de bord avant (25) associées à celle-ci des systèmes de préhension (8) du système de convoyage (11) lors de leur mouvement dans le sens de convoyage (R).
  6. Unité de margeage selon une ou plusieurs des revendications 1 à 5, caractérisée en ce que
    la zone se raccordant au tambour d'alimentation supérieur (3.1) du système de convoyage (11) est réalisée dans une faible mesure de manière à s'éloigner de l'extension de la table d'acheminement (2) dans le sens de convoyage (R).
  7. Unité de margeage selon une ou plusieurs des revendications 1 à 5, caractérisée en ce que
    la table d'acheminement (2) est conçue pour s'éloigner dans une faible mesure par rapport à la zone du système de convoyage (11) se raccordant au tambour d'alimentation supérieur (3.1) du plan de l'extension du système de convoyage (11) dans le sens de convoyage (R).
  8. Unité de margeage selon une ou plusieurs des revendications 1 à 7, caractérisée en ce
    qu'une inclinaison entre la table d'acheminement (2) par rapport à la zone se raccordant au tambour d'alimentation supérieur (3.1) dans le sens de convoyage (R) du système de convoyage (11) est réalisée de manière à être réglable en fonction d'une courbe d'épaisseur de support d'impression (P) dans le sens de convoyage (R).
  9. Unité de margeage selon une ou plusieurs des revendications 1 à 8, caractérisée en ce
    qu'il est prévu deux capteurs de situation de feuilles ou davantage (20.1) associés à la table d'acheminement (2) et qui sont conçus pour détecter un bord avant de feuille (26) d'une feuille d'impression (B) transportée par la table d'acheminement (2) dans une certaine position où sur une zone de mouvement.
  10. Unité de margeage selon une ou plusieurs des revendications 1 à 9, caractérisée en ce que
    qu'à l'unité de margeage (19) est associée une commande (15) qui est raccordée au capteur de position de feuilles (20.1) disposé au niveau de la table d'acheminement (2) par un câble de transmission de données (16) et par un premier câble de commande (17) a une commande mécanique de la machine d'impression rotative de feuilles, la commande étant conçue pour déterminer des données de position d'un bord avant de feuille (26) d'une feuille d'impression (B) transporter sur la table d'acheminement (2) et pour déterminer des règles pour des données de position d'abord avant de feuilles (26) d'une feuille d'impression (B) à transporter sur la table d'acheminement (2) à partir de données acheminées par la commande mécanique.
  11. Unité de margeage selon une ou plusieurs des revendications 1 à 10, caractérisée en ce que
    la commande est en outre reliée au moyen d'un second câble de commande (18) à une commande automotrice ou une commande électromécanique d'air d'aspiration de la tête d'aspiration (13) dans le margeur de feuilles (1) de manière à ce que la commande (15) soit conçue pour établir une comparaison théorique-réel à partir des données de position qui ont été obtenues à partir des données de mesure des capteurs de position de feuilles (20.1) et des données de commande de la commande mécanique et que la commande (15) est conçue pour générer des données de commande pour une commande nécessaire en raison de la comparaison théorique-réel de la tête d'aspiration (13).
  12. Unité de margeage selon une ou plusieurs des revendications 1 à 11, caractérisée en ce
    qu'est associé à la table d'acheminement (2) un dispositif de réglage d'une inclinaison de la surface de la table d'acheminement (2) dans le sens de convoyage (R) et que le dispositif d'inclinaison est connecté à la commande (15) de manière à ce qu'une inclinaison de la table d'acheminement (2) soit réglable en fonction de données de commande de la commande mécanique.
  13. Unité de margeage selon une ou plusieurs des revendications 1 à 11, caractérisée en ce
    qu'est associé au système de convoyage (11) un dispositif de commande ajustable de préhension des pinces (9) des systèmes de préhension (8) lors de la prise en charge des feuilles au niveau de la table d'acheminement (2) et que la commande (15) est couplée au dispositif de commande ajustable de préhension pour saisir un bord avant de feuilles (26) d'une feuille d'impression (B) transportée sur la table d'acheminement (2) de manière à ce que la fermeture des pinces (9) ait lieu dans une certaine position ou dans une zone de mouvement.
EP17172693.8A 2016-05-25 2017-05-24 Reprise de feuille dans une unité margeur Active EP3248918B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016109731 2016-05-25
DE102017111309.6A DE102017111309A1 (de) 2016-05-25 2017-05-23 Bogenübernahme in Anlegeeinheit

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DE102019102775A1 (de) * 2019-02-05 2020-08-06 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit Formgebungseinrichtung und oberem Saugtransportmittel
DE102019129647A1 (de) * 2019-11-04 2021-05-06 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit zumindest einem Zuführsystem und Verfahren zur Steuerung eines Zuführsystems einer Bogenbearbeitungsmaschine
CN113511006B (zh) * 2021-08-18 2024-06-25 惠州市嘉信达科技有限公司 一种循环式叼纸机构及高速全自动磁性印刷机
CN117538340B (zh) * 2023-12-05 2024-08-16 东莞市鼎力自动化科技有限公司 一种电子纸表面清洁度的检测装置
CN118342109B (zh) * 2024-06-18 2024-09-20 常州巨凌智能科技有限公司 一种角度自调节的焦距随动智能激光加工装置

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DE2063618C3 (de) 1969-12-25 1974-06-27 K.K. Nisso, Osaka (Japan) Verfahren und Vorrichtung zur kontinuierlichen Herstellung gefalteter Wellpappebehälter
DD126254A1 (fr) 1976-06-18 1977-07-06
DE4343616B4 (de) 1993-12-21 2007-05-16 Koenig & Bauer Ag Modulares Druckmaschinensystem
DE19933304A1 (de) 1999-07-16 2001-01-25 Roland Man Druckmasch Anlegeeinheit für eine Bogenverarbeitungsmaschine
DE10355515A1 (de) * 2003-11-27 2005-06-30 Koenig & Bauer Ag Rotierender Vorgreifer
DE102005012527A1 (de) 2005-03-16 2006-09-21 Man Roland Druckmaschinen Ag Anlegeeinheit für eine Bogenverarbeitungsmaschine, Bogenverarbeitungsmaschine und Verfahren zum Anlegen von Bogen
DE102007033936A1 (de) * 2007-07-20 2009-01-22 Koenig & Bauer Aktiengesellschaft Umlaufender Vorgreifer

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