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EP3463888A1 - Repérage de bord avant dans une unité de margeage - Google Patents

Repérage de bord avant dans une unité de margeage

Info

Publication number
EP3463888A1
EP3463888A1 EP17726268.0A EP17726268A EP3463888A1 EP 3463888 A1 EP3463888 A1 EP 3463888A1 EP 17726268 A EP17726268 A EP 17726268A EP 3463888 A1 EP3463888 A1 EP 3463888A1
Authority
EP
European Patent Office
Prior art keywords
sheet
drum
conveyor
conveyor system
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.)
Granted
Application number
EP17726268.0A
Other languages
German (de)
English (en)
Other versions
EP3463888B1 (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
Application filed by Manroland Sheetfed GmbH filed Critical Manroland Sheetfed GmbH
Publication of EP3463888A1 publication Critical patent/EP3463888A1/fr
Application granted granted Critical
Publication of EP3463888B1 publication Critical patent/EP3463888B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B41F21/04—Grippers
    • B41F21/06—Suction-operated 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/12—Adjusting leading edges, e.g. front stops
    • 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
    • B41F21/14—Adjusting lateral edges, e.g. side stops
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/101—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting on the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/30—Chains
    • B65H2404/34—Gripper bars bridging at least two chains running synchronously and parallely
    • B65H2404/341—Details of driving or return drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge

Definitions

  • the invention relates to a placement unit for a sheet-fed printing press 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 printed matter is carried out in equipment for sheet-fed equipment, the sheets separated from a pile of sheets are fed as a 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. With the help of sensory devices, system barriers act to block printed sheets in the event of inaccuracies in 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 combines a printing unit with the printing cylinder of a printing unit. acting first double-sized investment drum with circumferentially two gripper systems.
  • This is a second single-sized plant drum in the sheet conveying direction arranged vertically offset in height.
  • a third, single-size feed drum precedes the second in height and is connected to a tilted feed table for sheet transfer.
  • 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 For paper processing, 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 upstream of which is a delivery table in the conveying direction, and a downstream conditioning drum is arranged downstream of it.
  • 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.
  • a placement unit for a sheet processing machine in a sheet processing machine with a method for 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.
  • DE 199 33 304 A1 discloses a laying unit for a sheet-processing machine.
  • 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.
  • the effort to supply air to suction belt tables for fans, a multi-chamber design and an oblique arc correction via suction belts should be eliminated.
  • 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, which avoids the disadvantages mentioned above, which in particular allows a simple modular structure and allows improved bowing of the sheet with extended Ausricht- time.
  • 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 can have a single or double-sized feed drum, which is assigned to a sheet-guiding drum of a first printing unit of the sheet-fed rotary printing press.
  • the conveying 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. Means are provided for adjusting the endless conveyor system circumferentially relative to the upper and / or lower abutment drum.
  • the upper abutment drum is assigned to a feed table and that the feed table is assigned to the sheet feeder, wherein the sheet transfer to the upper abutment drum is adjustable to different positions of the sheet in the conveying direction.
  • the lower abutment drum is associated with a counter-pressure cylinder of the first printing unit of the sheet-fed rotary printing press and that the sheet transfer from the lower abutment drum to the genyakzylinder is adjustable to different positions of the sheet in the conveying direction.
  • the conveyor system is designed as an endless chain conveyor with a plurality of gripper systems, wherein the gripper systems extend between two conveyor chains running in mutually parallel guide rails.
  • the guide rails form a closed guideway including the lower drum and the upper drum.
  • means are provided for displacing the gripper systems on the conveyor chains in or against the conveying direction.
  • the conveyor chains are synchronously and jointly with respect to cooperating devices before or after or driven asynchronously with regarditiger leading or lag each one of the conveyor chains relative to the other.
  • the printed sheet to be fed to the sheet-fed rotary printing press is arranged at the upper and / or lower side of the sheet.
  • one or more measuring systems are associated with sheet position sensors adjacent. The measuring systems are coupled to an evaluation unit and a controller. The controller is operatively connected to an actuator acting on the conveyor system for position correction of gripper systems.
  • one or more measuring systems with sheet genagen sensors is associated adjacent, which are coupled to an evaluation and a controller, said Control is operatively connected to an acting on the conveyor system actuator for position correction of gripper systems.
  • the conveyor system and / or the suction head of the sheet feeder are each provided with an independent motor drive.
  • the motor drives are coupled by means of the controller so with the machine control of the sheet-fed rotary printing press, that the conveyed from the conveyor system sheet in its position in the conveying direction with respect to the machine cycle of the sheet-fed rotary printing press accurately aligned for rotational movement of the sheet-fed rotary printing press.
  • the upper and / or lower bearing drum are provided with one or two independent motor drives.
  • the motor or drives are coupled by means of the controller with the machine control of the sheet-fed rotary printing press.
  • one or both conveyor chains of the conveyor system are each provided with an independent motor drive.
  • the motor drives are coupled by means of the control with the machine control of the rotary press.
  • 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, in a simple-sized investment drum.
  • the application unit is thus universal for the processing of relatively thin printed sheets as well as thick sheets, such as e.g. Cardboard or sheet metal, regardless of the elasticity of the sheet used.
  • the arrangement of the upper abutment drum on one or offset in height above a horizontal plane formed by the axes of all counter-pressure cylinders allows for a horizontally arranged feed table at the level of the stacking surface, the formation of a Hochstapelanlegers.
  • a complex replacement of a normal stack feeder against a high pile feeder is obsolete.
  • the isolated from the sheet feeder sheet are fed directly into a horizontal conveying plane of the upper bearing drum and can be created in the gripper systems of integrated front brands there. This avoids possible damage to the printed sheet, which can occur, for example, at the transition from the sheet feeder to the feed table.
  • the feed table is preferably formed flat surface and provided with longitudinal openings into which open at the inlet to the upper drum conditioning gripper Submerge ferfinger of the gripper systems of the conveyor system.
  • the separated printed sheets fed from the sheet stack reach their alignment marks on a greatly shortened conveying path and can be accelerated immediately to full speed.
  • the length of the feed table can be shortened and, for example, a stopper is less waste.
  • the structural design of the solution according to the invention has a parallel guide on the contact plate between the gripper systems and the pressure sheet pushed by the suction head as a contact area corresponding to a conventional contact 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 due to printed sheets, which remain in the known manner with stoppers on the belt table and must be cleared away, making them useless.
  • the orientation of the sheet can be done during transport between the feeder stack and the first printing unit. Axial, i. transverse to the paper direction of the so-called side registration is adjusted 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 system with sheet-fed control sensors in the course of the conveyor system is connected to a closed control loop and ensures that early, late, double and oblique sheets are already recognized on the contact sheet and thus excluded from the transfer to the sheet transport by means of the conveyor system ,
  • the orientation of the printing material is carried out in the conveying process during transport from the suction head to the impression cylinder.
  • the sheet When resting, aligned in the front edge bow as currently performed as standard, the sheet is then pulled laterally against a stop. There is a risk of slipping. There are stoppers and therefore waste, which is minimized by the invention.
  • the system can not be locked in time and the bow comes in. This can happen until the machine breaks and the rubber blankets are destroyed. This is avoided by the invention.
  • the sheets are aligned during transport between the suction head and the impression cylinder of the first printing unit by an adjusting device. This can be a fork in the alignment cylinder, which aligns the transport system in the scope and also corrects skew.
  • the gripper systems are conveyed through an endless chain, for example, and each must be designed to be alignable. This is possible axially by means of floating suspension, but an inclined blade orientation or an alignment in the circumference necessitates a decoupling of the transport system from the drive chains.
  • Variant 1 The chain is not, as usual, driven by a sprocket on the cylinder axis, but by two separate chain drives each on one side.
  • the basic task of these drives is the transport of the transport systems and the printing material. By accelerating or slowing down both Drives, the leading edge can be passed to the impression cylinder sooner or later. During acceleration or deceleration on only one side, skew bends can be corrected.
  • Variant 2 The systems are aligned or corrected by means of fishing forks, which are equally adjustable on both sides of the substrate in the paper direction and one-sided adjustable bevel. The chain strand is closed. In order for the acquisition of the sheet, the orientation and the transfer do not influence each other, the length of the chain from one to the other transport system must be variable.
  • the system is always pre-aligned in the upper drum.
  • the necessary actuators can be performed electrically, pneumatically or hydraulically, etc.
  • a pre-alignment of the transport system can already take place with regard to the sheet that is still on the stack, the systems are preset and take over the substrate, even in a (pre-) corrected position, in the upper investment drum.
  • the system can be locked here as desired.
  • the sheet position sensors which can be manually or automatically adjusted to the substrate format, detect the leading edge of the substrate after being transferred to the transport system on the contact sheet.
  • the actuators align the bow on the way to the lower feed drum or in the feed drum.
  • the very short time known Vordermarkenaus- directions is considerably extended by this solution. So that the transport system is no longer adjusted after the alignment, a fastening (clamping) is provided.
  • FIG. 2 is a laying unit according to Fig. 1 in plan view
  • FIG. 3 shows a laying unit in functional connection with a guide element for lateral alignment
  • FIG. 5 a landing unit according to FIG. 4 with a circumferential alignment
  • Fig. 6 shows a landing unit with a further circumferential orientation
  • FIG. 7 shows a landing unit with a motor-driven peripheral-related
  • a sheet-fed rotary printing press (offset printing press) according to FIG. 1 has one or more printing units D1, D2 and / or lacquer modules.
  • the printing units D1, D2 upstream of a laying unit 19 is associated with an endlessly circulating conveyor system 1 1 in the conveying direction R.
  • Each printing unit D1, D2 has a transfer drum 4 and a downstream in the conveying direction R impression cylinder 5 for the sheet transport.
  • Each impression cylinder 5 is assigned a blanket cylinder 7 and a forme cylinder 6.
  • each printing unit D1, D2 the impression cylinders 5 and transfer drums 4 are of double size starting from single-size blanket 7 and forme cylinder 6 and each have two rows of grippers 22 for sheet transport.
  • the application unit 19 consists of a sheet feeder 1, a feed table 2 and single or double-sized upper and lower installation drums 3.1, 3.2.
  • the upper bearing drum 3.1 and the lower bearing drum 3.2 are connected by a two endless conveyor chains 23 exhibiting conveyor system 1 1 with each other.
  • the conveyor system 11 has five gripper systems 8 which circulate on the conveyor chains in guide rails 12.
  • the gripper system 8 are bar-shaped extending transversely to the conveying direction R between the conveyor chains 23 extending beam elements, which have a series of grippers 9 for transporting sheet B at the sheet leading edge.
  • 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 assigned to the surface of the sheet stack 14 upstream of a suction head 13, by means of which the uppermost sheet is separated from the sheet stack 14 and advanced by suckers 13.1 towards the feed tray 2 until it reaches a takeover distance Ü for gripping the sheet leading edge by the gripper systems 8 ,
  • the upper bearing drum 3.1 is arranged above the feed table 2, the upper bearing drum 3.1 is arranged.
  • gripper systems 8 are guided by the conveyor system 1 1 on guide rails 12 in the area of sheet transfer parallel to the feed table 2 via a takeover Ü.
  • the separated printing sheet B is thus taken over by the gripper systems 8 with grippers 9 open on the feed table 2 after the sheet leading edge has been introduced into the gripper 9 by the suction head 13 and the sheet B has then been gripped at the sheet leading edge. Thereafter, it can be removed from the feed table 2.
  • a device with one or more sheet position sensors 20.1 is arranged below the feed table 2.
  • the sheet position sensors 20 By means of the sheet position sensors 20, the position of the sheet leading edge of just separated from the sheet stack 14 and taken over by the gripper system 8 with the grippers 9 sheet B is detected and evaluated in terms of its position with respect to the machine cycle and the position with respect to the orientation during transport in the conveying direction R.
  • a sheet guiding device 21 is arranged approximately parallel to the downwardly leading floor transport path.
  • each individual sheet B is separated by a gripper.
  • led fersystem 8 of the upper bearing 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 in order to monitor the position of the sheet edges in the gripper system 8 in the conveying direction R and transversely thereto in the direction of the side edges of the printed sheets B.
  • the data resulting from the measurement of the position of the printed sheets B are used to adjust the sheet position with respect to the processing clock and the page orientation of each individual sheet B.
  • a measuring system with a few sheet position sensors 20 is arranged on or below the feed table 2, which detects the actual position of a front and / or side edge of the printed sheet B on the feed table 2.
  • a controller 24 hereby a target-actual comparison is made. By means of side pulling and / or leading edge alignment of the sheet B can then be controlled in a desired position for acquisition by the gripper 9 on or in conjunction with the gripper systems 8 are aligned.
  • the feed table 2 is arranged horizontally so that the sheet-shaped printed sheet B separated by the suction head 13 on the sheet stack 14 in the sheet feeder 1 can be detected in the transfer section Ü in the area of the feed table 2. This takes place in a continuously largely horizontal conveying plane through the suckers 13.1 of the suction head 13, which introduce the separated printed sheet B into the gripper 9 open at the bottom of the feed table 2 on the gripper system 8.
  • the assignment to the gripper systems 8 via arranged in conjunction with the grippers 9 in the gripper systems 8 and not shown here front edge stops, against which the sheets B are created by the pushing movement of the suction head 13 before the grippers 9 may be closed.
  • the izotronnnnel 3.1 is disposed within the application unit 19 above the feed table 2 such that the horizontal conveying plane of the feed table 2 tangentially to the corresponding gripper system 9, which enters via the contact drum 3.1 runs.
  • the installation drums 3.1 and 3.2 may, based on the single-size form cylinder 6, be either single or double sized. This can be selected depending on the space requirements and the demands on materials to be processed.
  • 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 easily passed to the impression cylinder 5 of the first printing unit D1.
  • 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 is a measuring system with at least one sheet position sensor 20 each, for position detection (actual value) of the gripper systems 8 from the upper abutment drum
  • the position detection can refer to side edges and the leading edge of the sheet B.
  • the sheet-fed sensors 20 are circuit-coupled with an evaluation unit for the nominal-actual comparison and a control such that the gripper systems 8 are laterally movable transversely to the conveying direction R in a design.
  • the functional connection of sheet position sensors 20, evaluation unit and control is 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 displacement recognizable and the sheet B through that in or against the conveying direction R obliquely adjustable gripper system 8 can be aligned in the desired position.
  • the sheet feed sensors 20 assigned to the feed table 2 and / or the sheet guiding device 21 and / or the feed tunnel 3.1 and 3.2 can be used together or individually.
  • the conditioning drum 3.2 is arranged in the embodiment of FIG. 1 directly upstream of the impression cylinder 5 of the first printing unit D1.
  • Each 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 each.
  • the operation of the application unit 19 is as follows:
  • 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.
  • the forward movement of the sheet is fed to the feed table 2 and in this case preferably already examined in terms of its location and on double bow or Bogenbe- damages out.
  • an alignment of the sheet-shaped printing sheet B after a side edge can be carried out after preferred metrological detection of the actual value and a target-actual comparison.
  • the transport takes place in the conveying direction R against leading marks on the gripper system 9 which runs ahead with open grippers 9.
  • the grippers 9 then grasp the printed sheet B when the leading marks abut against the sheet leading edge and the gripper fingers 9 act , while the sheet edge abuts the front marks, at the same time as so-called cover marks 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 leading edge of the sheet B takes place during a synchronous movement between Sheet B and gripper system 8 parallel to each other at the feed table 2 in the transfer line Ü.
  • the expired by the rotating bearing drum 3.1 gripper system 8 is moved further on the conveyor system 1 1 in guide rails 12 and pulls the fixed in the gripper circuit 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. via the sheet guiding device 21.
  • 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.
  • 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 printing sheet B is then transferred to the subsequent impression cylinder 5 after the first printing on the transfer drum 4 of the second printing unit D2 and in a known manner.
  • the conditioning drum 3.2 is designed as a double-sized drum, its drum body can be taken over by a delivery drum at the end of the sheet-fed offset printing press.
  • a corresponding storage position for the standard attachment of a transfer drum 4 is already provided, in which the delivery drum is used.
  • the jib drum is also intended to accommodate endless chain conveyor systems.
  • the application unit 19 is shown in a plan view.
  • the upper bearing drum 3.1 connects.
  • the suction head 13 is an arrow view (see also Fig. 1) shown to illustrate the movements in the sheet separation.
  • the investment drum 3.1 covers here the feed table 2 largely, so that this is highlighted as in Fig. 1 in a dashed representation.
  • the printed sheet B can be aligned by means of the gripper system 8.2 both transversely to the conveying direction R, ie with respect to its side edges, as well as with respect to a pivoting of its leading edge to the conveying direction.
  • the sheet alignment can take place between the contact drum 3.1 to the contact drum 3.2, in the course of the sheet transfer to the contact drum 3.1 or in the course of the sheet transfer from the contact drum 3.2 to the impression cylinder 5.
  • FIGS. 3 and 4 possibilities for sheet alignment in connection with gripper systems 8 are shown.
  • the gripper systems 8 are here associated with guide rails 12 (see also FIG. 2), wherein the gripper systems 8 are moved on conveyor chains 23 by means of guide rollers 10 in the guide rails 12.
  • FIG. 3 shows an alignment element 15, which is supported by a break-away point which can be positioned axially against a holding point which can be positioned at an upper or lower abutment drum 3.1, 3.2 when the gripper system 8 enters into an abutment. Richtö réelle 16 engages.
  • the gripper system 8 is guided between the guide rollers 10 and the guide surfaces in the guide opening 16 in a preselected lateral positioning before and while a sheet B is picked up by the grippers 9 on the gripper system 8 and fixed or transferred in a fixed position to a counter-pressure cylinder 5 ,
  • the sheet B can be aligned on investment drums 3.1 or 3.2 axially, ie transversely to the conveying direction R in the direction of the sheet side edges.
  • the hinged to the conveyor chains 23 gripper systems 8 can be adjusted in their orientation with respect to the position of the suspension points on the conveyor chains 23 relative to each other.
  • the positions relative to the counter-pressure cylinder 5 can also be set at the transfer position at the lower abutment drum 3.2.
  • the upper transfer position after the upper abutment drum in the transfer line Ü is also controllable.
  • the suction head 13 even be adjusted by means of a self-propelled drive 26 to a transfer position after the upper bearing drum 3.1.
  • FIG. 6 two further approaches are shown in a representation of FIG. 3 and 4 in combination.
  • a recess 32 is provided in the guideways 12. In the region of the recess 32 is on the inside of the conveyor chains 22, 23 each one supporting this tension roller 33 is provided.
  • the tension rollers 33 are moved in the direction of a positioning movement S against the conveyor chains 22, 23. In this case, a shortening of the conveyor chains 22, 23 with a retraction of the corresponding side of the gripper systems 8 is effected by a movement in the direction of the outside of the deflection.
  • the retraction of the tension roller 33 causes a release of the conveyor chains 22, 23 and a feed of the gripper systems eighth
  • one of the drums 3.1, 3.2 is provided at the end of the conveyor system 1 1 in the region of the deflection of the conveyor chains 22, 23 one of the drums 3.1, 3.2 is provided.
  • the guide discs 34 are thus part of the bearing drum 3.1 or 3.2 and wear on the outer periphery catch forks (see Fig. 4).
  • the guide disks 34 are adjustably mounted on a shaft 35 of the bearing drum 3.1 or 3.2, so that the catch forks 17 can be adjusted in the circumferential direction to the bearing drum 3.1 or 3.2 together or to each other.
  • Fig. 7 is selected to describe a first independently operable drive configuration of a representation corresponding to FIG.
  • the sheet separation takes place via an independently operated second drive motor 26 in connection with the suction head 13 in the sheet feeder 1.
  • the conveyor chains 23 and the sprockets of the upper bearing drum 3.1 are offset by the first drive motor 25 via the sprockets of the lower bearing drum 3.2 in transport movement. If both sprockets of the lower abutment drum 3.2 are coupled to a rigid axle, the position of the leading edge of the signature B can be adjusted relative to the movement of the sheetfed offset printing machine by the drive movement of the first drive motor 25 via the driven gripper systems 8. This can be done in a simple manner a precisely fitting sheet transfer from the gripper systems 8 to the plant drum 3.2 to the impression cylinder 5 in relation to the machine cycle of the sheetfed offset printing press.
  • each of the sprockets of the lower conditioning drum 3.2 is provided with its own first drive motor 25, by means of an independently controlled drive movement of the sheet B on the gripper systems 8 both in terms of the position of the sheet leading edge in the transport direction and in terms of a possible skew the sheet leading edge are aligned.
  • the signals for controlling the first and second drive motors 25, 26 with respect to the sheet position are obtained from sheet position sensors 20 in the region of the feed table 2 and the sheet guiding device 21 in the sheet movement on the gripper systems 8 and fed via data lines 27 to a controller 24.
  • the position data of the signatures B are then processed together with machine cycle related signals, which are supplied to the controller 24 via a machine data line 29 from a machine controller of the sheet-fed offset printing press.
  • the deviations obtained therefrom are processed into control signals, which are conducted via control lines 28 to the first and second drive motors 25, 26 in order to control the sheet conveyance for the correction of misalignments of the printed sheets B via their drive movement.
  • the orientation of the signature B can be during the transport of the
  • the page register can be adjusted in a simple and advantageous manner by moving a gripper system 8 during transport, wherein the sheet B is held during the displacement over the entire length.
  • the alignment with respect to the oblique curve and the position of the sheet leading edge in the sheet conveying direction R is controlled in a simple manner inline via the forward movement of the gripper systems 8.
  • a sensor (sheet position sensors 20) with one or more control loops allows early, late, double and oblique sheets possibly already on the feed table 2 (contact sheet) to recognize and hold, if a misalignment should not be ausregelbar. Thus, print sheet B with misplaced sheets does not arrive as a source of error in the transport to the printing press. 7.
  • An inline orientation of the early / late bow is possible and a special alignment device for the gripper systems. 8 in Bogenför- direction R can therefore be omitted ..
  • a first printing unit D1 and a succeeding printing unit D2 may be constituted similarly if a sheet transport drum in the form of a delivery drum is used as the lower registration drum 3.2 (feed drum). 10.
  • the bowing is significantly improved especially for cardboard material, since damage such as scratches o. ⁇ . Eliminate by the simple bowing. 1 1.
  • a belt table, also as suction belt table, with suction air supply suction belts and belt rollers is eliminated.

Landscapes

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

Abstract

L'invention concerne une unité de margeage pour une machine rotative d'impression de feuilles, l'unité de margeage étant dotée d'un ou plusieurs groupes d'impression (D1, D2) et/ou d'un ou plusieurs modules de vernissage. Ceux-ci sont équipés d'une base constituée respectivement de tambours de transfert (4) de taille double et de cylindres de contre-pression (5). L'unité de margeage est dotée d'un margeur (1), d'une unité de transport et d'une table d'alimentation (2) et comprend un tambour de margeage (3.2) de taille simple ou double qui est associé à un tambour de guidage de feuilles d'un premier groupe d'impression (D1) de la machine rotative d'impression de feuilles. Pour améliorer la maniabilité, l'unité de transport est réalisée sous la forme d'un système de transport (11) en continu reliant le tambour de marge inférieur (3.2) à un tambour de marge supérieur (3.1). Un système de transport (11) doté de systèmes de préhension (8) est disposé entre les tambour de marge supérieur et inférieur (3.1, 3.2), lequel système de transport peut être commandé pour compenser des décalages de feuilles dans la direction de transport (R).
EP17726268.0A 2016-05-25 2017-05-24 Repérage de bord avant dans une unité d'alimentation Active EP3463888B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016109732 2016-05-25
DE102017111311.8A DE102017111311A1 (de) 2016-05-25 2017-05-23 Vorderkantenausrichtung in Anlegeeinheit
PCT/EP2017/062566 WO2017202926A1 (fr) 2016-05-25 2017-05-24 Repérage de bord avant dans une unité de margeage

Publications (2)

Publication Number Publication Date
EP3463888A1 true EP3463888A1 (fr) 2019-04-10
EP3463888B1 EP3463888B1 (fr) 2021-01-20

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EP17726268.0A Active EP3463888B1 (fr) 2016-05-25 2017-05-24 Repérage de bord avant dans une unité d'alimentation

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EP (1) EP3463888B1 (fr)
DE (1) DE102017111311A1 (fr)
WO (1) WO2017202926A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020110509B4 (de) * 2020-04-17 2022-07-14 Koenig & Bauer Ag Verfahren und Vorrichtung zum positionsgenauen Zuführen von Blechtafeln zu einem Druck- oder Lackierwerk einer Blech-Beschichtungsmaschine
CN115231351A (zh) * 2022-06-29 2022-10-25 新乡市布瑞克斯机械有限公司 一种6开8开书帖输送机构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170972B (de) * 1962-04-30 1964-05-27 Schnellressenfab Heidelberg Vorrichtung zum Vereinzeln und Foerdern des jeweils obersten Blattes eines Stapels
GB1331630A (en) 1969-12-25 1973-09-26 Nisso Kk Containers and apparatus for and methods fo making them
DD126254A1 (fr) 1976-06-18 1977-07-06
FR2512743B1 (fr) * 1981-09-17 1986-03-21 Draperi Christian Machines offset feuilles avec rectifications et marge pneumatiques et electroniques, ainsi que disposition speciale des cylindres permettant le transfert des feuilles impression entierement terminee
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
DE20104483U1 (de) * 2001-03-15 2001-06-13 Man Roland Druckmaschinen Ag, 63069 Offenbach Bogenleiteinrichtung für Bogenanleger mit Vorderkantentrennung
DE10344417B4 (de) * 2003-01-24 2018-06-21 Heidelberger Druckmaschinen Ag Bogenanleger mit einem Antrieb zum taktmäßigen Zuführen von Bogen zu einer Bogen verarbeitenden Maschine
DE102005012527A1 (de) 2005-03-16 2006-09-21 Man Roland Druckmaschinen Ag Anlegeeinheit für eine Bogenverarbeitungsmaschine, Bogenverarbeitungsmaschine und Verfahren zum Anlegen von Bogen

Also Published As

Publication number Publication date
EP3463888B1 (fr) 2021-01-20
WO2017202926A1 (fr) 2017-11-30
DE102017111311A1 (de) 2017-11-30

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